CN102241061B - Residual steam recovering system for still kettles during production of tubular piles - Google Patents
Residual steam recovering system for still kettles during production of tubular piles Download PDFInfo
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- CN102241061B CN102241061B CN 201110192800 CN201110192800A CN102241061B CN 102241061 B CN102241061 B CN 102241061B CN 201110192800 CN201110192800 CN 201110192800 CN 201110192800 A CN201110192800 A CN 201110192800A CN 102241061 B CN102241061 B CN 102241061B
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Abstract
The invention provides a residual steam recovering system for still kettles during production of tubular piles, comprising at least two still kettles, steam supply pipes and steam exhausting pipes; the still kettles are uniformly provided with steam inlets and drain ports; steam exhausting ports are arranged on at least one still kettle; the steam supply pipes are connected to the steam inlets; and the steam exhausting pipes are connected to the steam exhausting ports. The residual steam recovering system is characterized by further comprising a steam-steam ejector, a water-water ejector, a buffer and a flash tank; the steam exhausting pipes are connected to the steam supply pipes through the steam-steam ejector; the drain ports of the still kettles are connected to the buffer through a drain pipe; an exhaust port of the buffer is connected to the flash tank through the water-water ejector; and an exhaust port of the flash tank is connected to the steam supply pipe through a flash steam pipe via the steam-steam ejector. According to the residual steam recovering system disclosed by the invention, when the pressure in the kettles in which residual steam are exhausted is reduced to be 0.5MPa or is balanced with the pressure of a stream receiving kettle, the residual steam in the kettles in which the residual steam is exhausted can be continuously exhausted.
Description
[technical field]
The present invention relates to a kind of pile tube production and press the remaining steam reclamation system that steams still.
[background technology]
In the prestressed concrete pipe pile production process, generally adopt to press and steam still carries out autoclave curing to pile tube technique, to realizing concrete strength and the length of time.Require during autoclave curing to adopt saturated vapor, the still internal gas pressure requires to reach 1.0MPa during constant temperature.When autoclave curing enters temperature-fall period, usually can by steam guiding tube steam be poured the steam in the still into another and just steam in the still in the pressure in increasing temperature and pressure stage, again utilize to making steam.But along with still internal pressure after pouring out remaining vapour reduces, pour out the still internal pressure and be down to 0.5MPa or pour out pressure in the still when being subjected to vapour still internal pressure balance, the remaining vapour of pouring out in the still can't be poured out again.
And, because pour out and also have a large amount of condensed water in high temperature to accumulate in the still in the still this moment, must remaining vapour in the still and condensate water discharging is clean, the still internal gas pressure is made zero to open still door continued access production, will open draining valve draining at the bottom of the still, when opening the draining valve draining, remaining vapour is also together discharged in the still for this reason, do not recycle this moment, namely produces the waste of a large amount of steam and condensate water heat energy.Usually can be with the mode recovery section heat energy of condensate water by heat exchange, but the steam of discharging is then realized reclaiming.Existing more than 400 the pile tube manufacturing enterprise in the whole nation steams still in the pressure of using and reaches more than 1500, calculates a large amount of remaining vapour heat energy of annual waste with every annual 800 stills of producing.
[summary of the invention]
The technical problem to be solved in the present invention is to provide a kind of pile tube production to press the remaining steam reclamation system that steams still, and the remaining vapour of pouring out in the still is recycled more fully.
The present invention is achieved in that a kind of remaining steam reclamation system of pile tube production pressure steaming still, comprise that at least two press the steaming still, steam supply pipe and the steam pipe that falls, press to steam on the still and be provided with air intake and discharge outlet, at least one pressure is steamed on the still and is provided with down steam ports, described steam supply pipe is connected to air intake, described steam pipe is connected to down steam ports, it is characterized in that: also comprise vapour vapour injector, water water jet device, buffer and flash tank, described steam pipe is connected to steam supply pipe by described vapour vapour injector, the discharge outlet that described pressure is steamed still is connected to described buffer by drainpipe, the outlet of described buffer is connected to flash tank by described water water jet device, and the exhaust outlet of this flash tank is connected to steam supply pipe by the flash distillation steam pipe via described vapour vapour injector.When steam supply pipe steams the still steam supply to pressure, high steam is by vapour vapour injector, this vapour vapour injector is equivalent to a unpowered pump, under the drive of the steam of steam supply pipe inner high voltage (being generally 1.05MPa), can produce eddy current, thereby the band dynamic pressure is steamed in the still the remaining vapour (being usually less than 0.5MPa) of low pressure and is steamed to the pressure in boosting and fall vapour in the still by falling steam pipe, until pour out Pressure Drop in the still to 0.5MPa or pour out pressure in the still when being subjected to vapour still internal pressure balance, open the discharge outlet of pouring out still, buffer, water water jet device and flash tank, and open the flash tank exhaust valve, pour out and enter vapour vapour injector after condensed water in high temperature that the discharge outlet in the still discharges produces a large amount of steam by the flash tank flash distillation, under the effect of vapour vapour injector, enter steam supply pipe, make the remaining vapour of pouring out in the still still can continue to pour out, thereby make recovery more thorough.
Further, described fall is provided with a return valve on the steam pipe, and described flash distillation steam pipe is connected to first falling on the steam pipe between described return valve and the vapour vapour injector, falls steam pipe by this again and connects described vapour vapour injector; And be provided with a flash tank exhaust valve on the flash distillation steam pipe.Its return valve is used for preventing that flash tank from doing the time spent, and the steam in the flash distillation steam pipe flows backward to down steam pipe.The flash tank exhaust valve is used for preventing that flash tank from not doing the time spent, and the steam that falls in the steam pipe flows backward in the flash distillation steam pipe.
Further, described flash tank also comprises a bypass outlet and a backflow import, and this bypass outlet is connected to described backflow import by return duct again through described water water jet device.With with in the flash tank not fully the steam of flash distillation repeatedly reclaim flash distillation, make flash distillation more abundant.
Further, described flash tank also comprises heat exchange outlet, and this heat exchange outlet is connected to an end of a First Heat Exchanger through heat exchanger tube, and the other end of First Heat Exchanger is connected to a boiler softened water tank.Make the flash tank waste heat can be recovered to heat soft water in the softened water tank.
Further, described flash distillation steam pipe and the end that is connected to again one second heat exchanger after steam pipe confluxes that falls, the other end of the second heat exchanger is connected to a boiler softened water tank.Make the flash distillation steam pipe and fall the waste heat of steam pipe and can be recovered to heat soft water in the softened water tank.
Further, described steam pipe also was connected to curing pool before connecting vapour vapour injector.Can utilize down steam pipe to the curing pool steam supply.
Further, the steam pipe that falls that is in described pressure steaming still end is drawn an evacuated tube, is provided with emptying valve on this evacuated tube, as pressing the safety-valve that steams still.A second row blank pipe is drawn at the discharge outlet place that described pressure is steamed still, and this second row blank pipe connects an evacuation port, and the second row blank pipe is provided with the second emptying valve door, presses the still that steams still to press in front of the door the water, the vapour that steam in the still all emptying to guarantee to open.。
Further, the outlet of described buffer also is connected directly to flash tank by another drainpipe, the steam of the outlet of buffer directly can be caused flash tank.
Further, described steam supply pipe comprises a main feed header and a plurality of steam supply arm, and described main feed header is connected to respectively each by each steam supply arm and presses the air intake that steams still, and described a plurality of steam supply arm is equipped with the steam supply valve; The described steam pipe that falls comprises the supervisor that falls vapour and a plurality of arms of falling vapour, and the described supervisor of falling vapour is connected to respectively the respectively steam ports of pressure steaming still by the arm of falling vapour respectively, and described a plurality of arm of falling vapour is equipped with the door of falling the steam valve; Described drainpipe comprises a draining plural branch drain pipe of advocating peace, the discharge outlet that described each pressure is steamed still is connected to described buffer by a branch drain respectively, the outlet of described buffer is connected to flash tank by drain header via described water water jet device, and described a plurality of branch drain is equipped with the buffer valve, and a drain header valve is set on the drain header.The connection situation of control piper that so can be convenient.
The present invention has following advantage: the steam ports that falls that press to steam still is connected to steam supply pipe by falling steam pipe by a vapour vapour injector, discharge outlet connects buffer and flash tank successively by drainpipe again, flash tank is connected to down steam pipe again, when steam supply pipe steams the still steam supply to pressure, open vapour vapour injector, this vapour vapour injector is equivalent to a unpowered pump, under the drive of the steam of steam supply pipe inner high voltage (being generally 1.05MPa), can produce eddy current, thereby the band dynamic pressure is steamed in the still the remaining vapour (being usually less than 0.5MPa) of low pressure and is steamed to the pressure in boosting and fall vapour in the still by falling steam pipe, until pour out Pressure Drop in the still to 0.5MPa or pour out pressure in the still when being subjected to vapour still internal pressure balance, again by pressing the discharge outlet of steaming still, buffer, the path of flash tank and vapour vapour injector makes the remaining vapour of pouring out in the still still can continue to pour out again.To utilize to a greater extent the steam of pouring out in the still.
[description of drawings]
The present invention is further illustrated in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the structural representation of remaining steam reclamation system one embodiment of the present invention.
[specific embodiment]
As shown in Figure 1, press remaining steam reclamation system one embodiment that steams still for pile tube production of the present invention, it comprises that three are pressed steaming still 10, steam supply pipe G1, the G2 of falling the steam pipe, a vapour vapour injector 20, water water jet device 30, a buffer 40, a flash tank 50 and drainpipe G3, steam supply pipe G1 comprises a main feed header G11 and three steam supply arm G12, the described G2 of falling the steam pipe comprises the supervisor of falling a vapour G21 and three arm of falling vapour G22, presses to steam for three to be provided with air intake 101, discharge outlet 102 and the steam ports 103 that falls on the still 10.Described main feed header G11 is connected to respectively three by three steam supply arm G12 and presses the air intake 101 that steams still 10, and the described supervisor of falling vapour G2 is connected to down respectively steam ports 103 by three arm of falling vapour G22.The described G2 of falling the steam pipe is connected to main feed header G12 among the steam supply pipe G1 by described vapour vapour injector 20.Described drainpipe G3 comprises three branch drain G32 and a drain header G31, the discharge outlet 102 that described each pressure is steamed still 10 is connected to described buffer 40 by a branch drain G32 respectively, the outlet of described buffer 40 is connected to flash tank 30 by drain header G31 via described water water jet device 30, and the outlet of described buffer 40 also is connected directly to flash tank 50 by another drain header G31-2, and drain header G31-2 can directly cause flash tank with the steam of the outlet of buffer.After the exhaust outlet 501 of this flash tank 50 is connected to the G2 of falling the steam pipe by flash distillation steam pipe G4, be connected to again the main feed header G11 of steam supply pipe G1 via described vapour vapour injector 20; And be provided with a return valve F3 on the described G2 of falling the steam pipe, specifically be arranged on the supervisor of the falling vapour G21, be provided with a flash tank exhaust valve F9 on the flash distillation steam pipe G4.When steam supply pipe G1 steams still 10 steam supply to pressure, open vapour vapour injector 20 and return valve F3, this vapour vapour injector 20 is equivalent to a unpowered pump, under the drive of the steam of steam supply pipe G1 inner high voltage (being generally 1.05MPa), can produce eddy current, thereby the band dynamic pressure is steamed the remaining vapour (being usually less than 0.5MPa) of still 10 interior low pressure and is steamed in the still 10 vapour by the G2 of falling the steam pipe to the pressure in boosting, therefore both made and pressed the Pressure Drop that steams in the still 10 as pouring out within the still to steam in the still 10 when being subjected to vapour still internal pressure balance with pressing to 0.5MPa or the pressure poured out in the still, closing volume valve F3 again, the water jet device 30 of fetching boiling water, buffer 40 and flash tank 50, and open the flash tank exhaust valve F9 of flash tank 50, enter vapour vapour injector 20 after pressing the condensed water in high temperature of pouring out discharge outlet 120 discharges in the still that steams in the still 10 to produce a large amount of steam by flash tank 50 flash distillations, under the effect of vapour vapour injector 20, enter steam supply pipe G1, make the remaining vapour of pouring out in the still still can continue to pour out, thereby make recovery more thorough.Need to prove, the quantity that pressure among this embodiment is steamed still 1 is three, therefore steam supply arm G12 and the arm of falling vapour G22 also are three, wherein each among this embodiment presses steaming still 10 to be equipped with the arm of falling vapour G22, can make three press to steam stills 10 and all can fall each other vapour, that is to say that three press to be steamed stills 10 and both can be used as and pour out still and also can be used as and be subjected to the vapour still, but the invention is not restricted to this, press the quantity of steaming still 10 to be two, also can be for a plurality of, the quantity of its steam supply arm G11 and the arm of falling vapour G22 and corresponding the getting final product of quantity of pressing steaming still 10.And buffer 40 the pressure decreased that each press can be steamed the water vapour with pressure of still 10 interior discharges is set, but temperature remains unchanged, and is beneficial to steam and separates.After the exhaust outlet 501 of this flash tank 50 is connected to the G2 of falling the steam pipe by flash distillation steam pipe G4 in the present embodiment, connect described vapour vapour injector 20 via the G2 of falling the steam pipe again, in other embodiments, the exhaust outlet 501 of flash tank 50 also can directly connect described vapour vapour injector 20 by flash distillation steam pipe G4.
Flash tank 50 among this embodiment also comprises a bypass outlet 502 and a backflow import 503, and this bypass outlet 502 is connected to described backflow import 503 by return duct G5 again through described water water jet device 30.With with in the flash tank 50 not fully the steam of flash distillation repeatedly reclaim flash distillation, make flash distillation more abundant.
Flash tank 50 among this embodiment also comprises heat exchange outlet 504, and this heat exchange outlet 504 is connected to an end of a First Heat Exchanger 61 through heat exchanger tube G6, and the other end of First Heat Exchanger 61 is connected to a boiler softened water tank 70.Make flash tank 50 waste heats can be recovered to heat soft water in the softened water tank 70.And be connected to an end of one second heat exchanger 62 after described flash distillation steam pipe G4 and the G2 of falling the steam pipe conflux, the other end of the second heat exchanger 62 is connected to a boiler softened water tank 70 again.Make the waste heat of flash distillation steam pipe G4 and the G2 of falling the steam pipe can be recovered to heat soft water in the softened water tank 70.
Among this embodiment, the described G2 of falling the steam pipe also was connected to curing pool 80 before connecting vapour vapour injector 20.Can utilize the G2 of falling the steam pipe to curing pool 80 steam supplies.
Among this embodiment, described pressure is steamed still 10 and is drawn an evacuated tube G71 at the arm of falling vapour G22, be provided with emptying valve F11 on the evacuated tube G71 as safety valve, draw a second row blank pipe G72 and connect an evacuation port 90 at discharge outlet 102 places of described pressure steaming still 10, and second row blank pipe G72 is provided with second emptying valve door F12.To guarantee pressing in front of the door the water, the vapour that steam in the still 10 all emptying opening still.
For the ease of operation control, each connecting pipe of steam reclamation system adds valve more than the present invention, can press the concrete control of the remaining vapour recovery of steaming still 10.As:
1, at the arm of falling vapour G22 the door of falling steam valve F2 is set, steam supply valve F4 is set on the steam supply arm G12, simultaneously establishes vapour vapour injector valve F5 and the 100 main feed header G21 that connect vapour vapour injectors 20 arrange boiler room steam supply valve F6 in the boiler room at the admission end of described vapour vapour injector 20; Press the branch drain G32 that steams still 10 connection buffers 40 that buffer valve F7 is set at each, and at the drain header G31 of buffer 40 connection water water jet devices 30 a drain header valve F8 is set.
Press steaming still 10 should close steam supply valve F4 in constant-voltage phase, after finishing, constant-voltage phase enters the buck stage of falling vapour, open the door of falling steam valve F2, open simultaneously vapour vapour injector valve F5 and boiler room steam supply valve F6, thereby vapour vapour injector 20 can produce the vapour that eddy current will the G2 of falling the steam pipe and bring main feed header G11 into, steams still 10 steam supplies thereby press to each.Press to steam in the still 10 as the Pressure Drop of pouring out within the still and steam in the still 10 when being subjected to vapour still internal pressure balance closing volume valve F3 with pressing to 0.5MPa or the pressure poured out in the still; Open buffer valve F7 and drain header valve F8, remaining vapour can be introduced flash tank 50 through water water jet device 30; Open again the flash tank exhaust valve F9 of flash tank 50, flash steam in the flash tank 50 can be sent into main feed header G21 via the G2 of falling the steam pipe, thereby press steaming still 10 steam supplies to each, owing to close return valve F3, thus the phenomenon among the G2 of falling the steam pipe can not appear flowing backward to.
3, when boiler room 100 steams still 10 steam supply by steam supply pipe G1 to a certain pressure, should open the steam supply valve F4 that this pressure is steamed still 10, close the door of falling steam valve F2;
4, be connected to one of curing pool 80 at the supervisor of falling vapour G2 and be in charge of and add curing pool valve F10, when pressing when steaming still 10 and will send vapour to curing pool 80, open the door of falling steam valve F2 and curing pool valve F10 gets final product.
Although more than described the specific embodiment of the present invention; but being familiar with those skilled in the art is to be understood that; our described specific embodiment is illustrative; rather than for the restriction to scope of the present invention; those of ordinary skill in the art are in modification and the variation of the equivalence of doing according to spirit of the present invention, all should be encompassed in the scope that claim of the present invention protects.
Claims (10)
1. the remaining steam reclamation system that steams still is pressed in a pile tube production, comprise that at least two press the steaming still, steam supply pipe and the steam pipe that falls, press to steam on the still and be provided with air intake and discharge outlet, at least one pressure is steamed on the still and is provided with down steam ports, described steam supply pipe is connected to air intake, described steam pipe is connected to down steam ports, it is characterized in that: also comprise vapour vapour injector, water water jet device, buffer and flash tank, described steam pipe is connected to steam supply pipe by described vapour vapour injector, the discharge outlet that described pressure is steamed still is connected to described buffer by drainpipe, the outlet of described buffer is connected to flash tank by described water water jet device, and the exhaust outlet of this flash tank is connected to steam supply pipe by the flash distillation steam pipe via described vapour vapour injector.
2. the remaining steam reclamation system that steams still is pressed in pile tube production according to claim 1, it is characterized in that: described fall is provided with a return valve on the steam pipe, described flash distillation steam pipe is connected to first falling on the steam pipe between described return valve and the vapour vapour injector, falls steam pipe by this again and connects described vapour vapour injector; And be provided with a flash tank exhaust valve on the flash distillation steam pipe.
3. the remaining steam reclamation system that steams still is pressed in pile tube production according to claim 1 and 2, it is characterized in that: described flash tank also comprises a bypass outlet and a backflow import, and this bypass outlet is connected to described backflow import by return duct again through described water water jet device.
4. the remaining steam reclamation system that steams still is pressed in pile tube production according to claim 1 and 2, it is characterized in that: described flash tank also comprises heat exchange outlet, this heat exchange outlet is connected to an end of a First Heat Exchanger through heat exchanger tube, the other end of First Heat Exchanger is connected to a boiler softened water tank.
5. the remaining steam reclamation system that steams still is pressed in pile tube production according to claim 1 and 2, it is characterized in that: the steam pipe between described flash distillation steam pipe and the described water water jet device is connected to an end of one second heat exchanger again, and the other end of the second heat exchanger is connected to a boiler softened water tank.
6. the remaining steam reclamation system that steams still is pressed in pile tube production according to claim 1, it is characterized in that: described steam pipe also was connected to curing pool before connecting vapour vapour injector.
7. the remaining steam reclamation system that steams still is pressed in pile tube production according to claim 1, it is characterized in that: the steam pipe that falls that is in described pressure steaming still end is drawn an evacuated tube, is provided with emptying valve on this evacuated tube.
8. the remaining steam reclamation system that steams still is pressed in pile tube production according to claim 1, it is characterized in that: a second row blank pipe is drawn at the discharge outlet place that described pressure is steamed still, and this second row blank pipe connects an evacuation port, and the second row blank pipe is provided with the second emptying valve door.
9. the remaining steam reclamation system that steams still is pressed in pile tube production according to claim 1, and it is characterized in that: the outlet of described buffer also is connected directly to flash tank by another drainpipe.
10. the remaining steam reclamation system that steams still is pressed in pile tube production according to claim 1, it is characterized in that: described steam supply pipe comprises a main feed header and a plurality of steam supply arm, described main feed header is connected to respectively each by each steam supply arm and presses the air intake that steams still, and described a plurality of steam supply arm is equipped with the steam supply valve;
The described steam pipe that falls comprises the supervisor that falls vapour and a plurality of arms of falling vapour, and the described supervisor of falling vapour is connected to respectively the respectively steam ports of pressure steaming still by the arm of falling vapour respectively, and described a plurality of arm of falling vapour is equipped with the door of falling the steam valve;
Described drainpipe comprises a drain header and a plurality of branch drain, the discharge outlet that described each pressure is steamed still is connected to described buffer by a branch drain respectively, the outlet of described buffer is connected to flash tank by drain header via described water water jet device, and described a plurality of branch drain is equipped with the buffer valve, and a drain header valve is set on the drain header.
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| CN 201110192800 CN102241061B (en) | 2011-07-11 | 2011-07-11 | Residual steam recovering system for still kettles during production of tubular piles |
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| CN 201110192800 CN102241061B (en) | 2011-07-11 | 2011-07-11 | Residual steam recovering system for still kettles during production of tubular piles |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102513028A (en) * | 2012-01-10 | 2012-06-27 | 烟台众力电力节能有限公司 | Gas pouring device for autoclave kettle |
| CN104908152A (en) * | 2014-03-13 | 2015-09-16 | 福建大力管桩有限公司 | Prestressing force high-strength concrete pipe pile processing system and use method of waste water waste heat in prestressing force high-strength concrete pipe pile processing system |
| CN104085038B (en) * | 2014-06-11 | 2018-11-16 | 上海锦江电子技术工程有限公司 | Still kettle thermal energy recycles cycling and reutilization energy conserving system and its process |
| CN104589478B (en) * | 2014-12-30 | 2017-02-01 | 周刚 | Still kettle quick accumulated residual steam accumulated energy circulating device and method |
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| US5358676A (en) * | 1990-05-18 | 1994-10-25 | E. Khashoggi Industries | Methods of manufacture and use for hydraulically bonded cement |
| CN101003152A (en) * | 2006-12-19 | 2007-07-25 | 嘉兴学院土木工程研究所 | Method of chemical prestress technique for thin steel pipe pile of pressed and steamed high strength concrete |
| CN101224602A (en) * | 2007-01-18 | 2008-07-23 | 中交三航局第三工程有限公司 | Production workshop for 55mPHC tubular pile |
| CN101249694A (en) * | 2008-03-25 | 2008-08-27 | 福建省大地管桩有限公司 | Pipe pile steam test maintenance residual heat utilization and reutilization sulfur dioxide desulfurization technology |
| CN202208057U (en) * | 2011-07-11 | 2012-05-02 | 福建省大地管桩有限公司 | Waste steam recovery system for pipe pile production still kettles |
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| US6984351B2 (en) * | 2001-01-23 | 2006-01-10 | Snap-Tite Technologies, Inc. | Apparatus and method for continuously and endlessly vulcanizing rubber hose |
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| US5358676A (en) * | 1990-05-18 | 1994-10-25 | E. Khashoggi Industries | Methods of manufacture and use for hydraulically bonded cement |
| CN101003152A (en) * | 2006-12-19 | 2007-07-25 | 嘉兴学院土木工程研究所 | Method of chemical prestress technique for thin steel pipe pile of pressed and steamed high strength concrete |
| CN101224602A (en) * | 2007-01-18 | 2008-07-23 | 中交三航局第三工程有限公司 | Production workshop for 55mPHC tubular pile |
| CN101249694A (en) * | 2008-03-25 | 2008-08-27 | 福建省大地管桩有限公司 | Pipe pile steam test maintenance residual heat utilization and reutilization sulfur dioxide desulfurization technology |
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