CN102135090B - Device for detecting efficiency of high-pressure centrifugal water pump on line - Google Patents
Device for detecting efficiency of high-pressure centrifugal water pump on line Download PDFInfo
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- CN102135090B CN102135090B CN 201110087969 CN201110087969A CN102135090B CN 102135090 B CN102135090 B CN 102135090B CN 201110087969 CN201110087969 CN 201110087969 CN 201110087969 A CN201110087969 A CN 201110087969A CN 102135090 B CN102135090 B CN 102135090B
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Abstract
The invention relates to a device for detecting the efficiency of a high-pressure centrifugal water pump on line, mainly solving the problem that the traditional portable instrument has poor long-term stability when being used for testing the efficiency of the pump and is unsuitable for field on-line detection. The device for detecting the efficiency of the high-pressure centrifugal water pump on line is characterized in that an inlet pipeline is connected with an inlet pressure transmitter and a temperature difference transmitter; an outlet pipeline is connected with an outlet temperature sensor and an outlet pressure sensor; the outlet temperature sensor is connected with the temperature difference transmitter through a cable; the temperature difference transmitter is connected with a CPU (Central Processing Unit) module through a cable; the inlet pressure transmitter and an outlet pressure transmitter are respectively connected with an analog quantity acquisition module through cables; measuring windings of a current transformer and a voltage transformer which are connected with a motor are respectively connected to an electric quantity acquisition module through cables; output ends of the analog quantity acquisition module and the electric quantity acquisition module are respectively connected with an input end of the CPU module; and the CPU module is connected with a human-computer interface. By the device, real-time on-line detection is realized and the accuracy of measuring the temperature and the temperature difference and the long-term stability are improved.
Description
Technical field
The present invention relates to a kind of measuring and testing device, especially
OnePlant online high-pressure centrifugal water pump efficiency detection device.
Background technique
The centrifugal high pressure water pump is the necessary equipment of the occasions such as oil field stratum high pressure water injection and thermal power plant boiler coke cleaning, mine groundwater promote earthward.The power of this kind equipment is generally all very large, and to more than thousands of kilowatts, the height of its working efficiency directly affects operating cost at hundreds of kilowatt, therefore guarantees that it is vital that the centrifugal high pressure water pump is worked under higher efficient.Because temperature differential method (thermodynamic method) test method is easy, equipment is few, convenient operation and data are calculated, and is widely used at Oil Field.
In the prior art to the test of high-pressure centrifugal water pump efficiency generally adopt be artificial image data, the artificial method of calculating or adopt detect the principle manufacturing according to temperature differential method portable instrument to the efficient of centrifugal high pressure water pump regular or irregular the test, understand the working condition of centrifugal high pressure water pump.Although the method that artificial image data is calculated can reach the purpose of the working condition of understanding pump, but because the restriction of field condition and the impact of personal factor, the data acquisition precision, particularly the precision of the data capture of temperature, the temperature difference is not high, adopt portable instrument to need professional workforce and instrument, and the long stability of this portable instrument and the stability of temperature are not high, need on-the-spot instant the adjustment, be not suitable for on-line continuous and detect for a long time the high-pressure centrifugal water pump efficiency use, prior art has been not suitable with the needs of modern management simultaneously.
Summary of the invention
The invention reside in overcome the use portable instrument test pump efficiency long time stability that exist in the background technique poor, be not suitable for the on-the-spot online problem that detects, and provide
OneKind of online high-pressure centrifugal water pump efficiency detection device, this device has thoroughly been eliminated the impact of long line, realized the real-time online detection of the Operational Limits of centrifugal high pressure water pump, has improved precision and the long time stability of temperature, differential temperature survey.
The present invention solves its problem and can reach by following technical solution: this online high-pressure centrifugal water pump efficiency detection device comprises the centrifugal high pressure water pump that is connected with inlet line, outlet line, the centrifugal high pressure water pump connects motor, be connected to inlet pressure transmitter, temperature difference transmitter on the described inlet line, be connected to outlet temperature sensor, outlet pressure transmitter on the outlet line; The outlet temperature sensor cable connects temperature difference transmitter, and temperature difference transmitter cable connects the CPU module; Inlet pressure transmitter, outlet pressure transmitter be cable connecting analog amount acquisition module respectively; Motor connects a winding of current transformer, voltage transformer, current transformer, voltage measuring transformer winding respectively cable are connected to electric quantity acquisition module, the output terminal of analogue collection module, electric quantity acquisition module connects respectively the CPU module input, and the CPU module connects man-machine interface.
The present invention compares with the above-mentioned background technology can have following beneficial effect: this online high-pressure centrifugal water pump efficiency detection device is because the sampling said structure, scene temperature, the differential temperature survey data are transferred to the control room in the mode of digital signal, there is not loss of significance, improved temperature, the measuring accuracy of differential temperature survey and long time stability, thoroughly eliminated the impact of long line, the resolution of differential temperature survey reaches a thousandth degree, error is less than 3/1000ths degree, temperature measurement accuracy once had been less than percent, the measuring accuracy that adopts thermodynamic method test pump efficiency has been reached≤1% higher level, the real-time online of having realized the Operational Limits of centrifugal high pressure water pump detects, also overcome simultaneously the personal factor impact, adapted to the needs of modern management.
Description of drawings:
Accompanying drawing 1 is structural representation of the present invention (a line left-half at the scene, right half part is in the control room);
Accompanying drawing 2 is temperature, temperature difference testing circuit schematic diagrams of temperature difference transmitter of the present invention;
Accompanying drawing 3 is two units of the present invention structural representations that use in parallel.
Among the figure: 1-centrifugal high pressure water pump, 2-inlet pressure transmitter, 3-temperature difference transmitter, the 4-inlet line, 5-outlet temperature sensor, 6-outlet pressure transmitter, the 7-outlet line, 8-motor, 9-water cooling plant, the 10-current transformer, 11-voltage transformer, 12-CPU module, 13-man-machine interface, the 14-electric quantity acquisition module, the 15-analogue collection module.
Embodiment:
The invention will be further described below in conjunction with accompanying drawing:
As shown in Figure 1, this online high-pressure centrifugal water pump efficiency detection device comprises the centrifugal high pressure water pump 1 that is connected with inlet line 4, outlet line 7, centrifugal high pressure water pump 1 connects motor 8, motor 8 is connected with water cooling plant 9, be connected to inlet pressure transmitter 2, temperature difference transmitter 3 on the described inlet line 4, be connected to outlet temperature sensor 5, outlet pressure transmitter 6 on the outlet line 7; Outlet temperature sensor 5 cables connect temperature difference transmitter 3, and temperature difference transmitter 3 cables connect CPU module 12; Inlet pressure transmitter 2, outlet pressure transmitter 6 be cable connecting analog amount acquisition module 15 respectively; Motor 8 connects a winding of current transformer 10, voltage transformer 11, current transformer 10, voltage transformer 11 measurement windings respectively cable are connected to electric quantity acquisition module 14, the output terminal of analogue collection module 15, electric quantity acquisition module 14 connects respectively CPU module 12 input ends, and CPU module 12 connects man-machine interface 13.Analogue collection module 15, electric quantity acquisition module 14, CPU module 12 composition data collecting treatment unit, data acquisition process unit and man-machine interface 13 are in the control room, and remaining part is at the scene.
Accompanying drawing 1 shown in 3, during this application of installation, is installed in inlet pressure transmitter 2, temperature difference transmitter 3 on the pump inlet pipeline 4 by reference to the accompanying drawings; Outlet temperature sensor 5, outlet pressure transmitter 6 are installed on the pump discharge pipeline 7.Outlet temperature sensor 5 is connected to temperature difference transmitter 3 by a shielded cable, then is connected to CPU module 12 input ends that are installed in the data acquisition process unit behind the instrument panel of control room by another shielded cable of temperature difference transmitter 3 usefulness; Inlet pressure transmitter 2, outlet pressure transmitter 6 are connected to respectively the input end of the analogue collection module 15 of data acquisition process unit by shielded cable; The measurement winding of current transformer 10, voltage transformer 11 is connected to respectively electric quantity acquisition module 14 input terminal separately of data acquisition process unit with a shielded cable; The output of analogue collection module 15 outputs, electric quantity acquisition module 14 is inputted respectively CPU module 12 and is processed, data communication device is crossed the RS485 communication cable and is connected with the man-machine interface 13 that is installed in the instrument panel panel, or carry out exchanges data with other system, use as an embedded system.As shown in Figure 3, the communication cable of the data acquisition unit of many units one by one corresponding parallel connection is connected with the communication cable of 13 of man-machine interfaces, select to show that so that the mode of form is fixing a certain unit or circulation show electric current, voltage, input power, the power factor of all unit motors in man-machine interface 13, and the air horsepower of water injection pump, inlet temperature, outlet temperature, the temperature difference, etc. the parameters such as moisture in the soil temperature rise value, inlet pressure, outlet pressure, instantaneous flow, unit consumption.
The thermodynamic method that the present invention stipulates according to existing centrifugal high pressure water injection pump efficiency test standard " the oil and gas industry standard SY/T5265-1996 of the People's Republic of China (PRC) ", the i.e. test method of " temperature differential method " and formula: relevant parameter is carried out being shown by the man-machine interface liquid crystal touch screen after automatic data acquisition, calculating, the processing.
Described temperature difference transmitter 3 adopts thermal resistor series connection [constant loop, and as shown in Figure 2, U1, U2 are operational amplifier, and U3, U4, U5, U6 are instrument amplifier.U1, U2, R1, R2, R3, R4, R5 consists of the precision constant current source circuit of 0.5mA, outlet temperature detects resistance R t1(PT1000), inlet temperature detects resistance R t2(PT1000), precision resistance RJ is serially connected in the [constant loop, outlet temperature detects two test ends of resistance R t1 respectively through R6, R7, C1, C2, the input circuit that C3 consists of is connected to in-phase input end and the end of oppisite phase input end of U3, inlet temperature detects two test ends of resistance R t2 respectively through R8, R9, C4, C5, the input circuit that C6 consists of is received in-phase input end and the end of oppisite phase input end of U5, U3, the output terminal TO of U5, Ti is connected respectively to homophase and the reverse input end of temperature difference detecting amplifier U4, the temperature difference is exported by the TC end after amplifying, Ti is connected to the in-phase end of inlet temperature amplifier U6 simultaneously, the end of oppisite phase of U6 is connected to the RJ of precision resistance, and the temperature signal after amplifying is by the output terminal TI output of U6.
Claims (3)
1.
OnePlant online high-pressure centrifugal water pump efficiency detection device, comprise the centrifugal high pressure water pump (1) that is connected with inlet line (4) and outlet line (7), centrifugal high pressure water pump (1) connects motor (8), it is characterized in that: be connected to inlet pressure transmitter (2) and temperature difference transmitter (3) on the described inlet line (4), be connected to outlet temperature sensor (5), outlet pressure transmitter (6) on the outlet line (7); Outlet temperature sensor (5) cable connects temperature difference transmitter (3), and temperature difference transmitter (3) cable connects CPU module (12); Inlet pressure transmitter (2) and outlet pressure transmitter (6) be cable connecting analog amount acquisition module (15) respectively; Motor (8) connects a winding of current transformer (10) and voltage transformer (11), current transformer (10) and voltage transformer (11) measurement winding respectively cable are connected to electric quantity acquisition module (14), analogue collection module (15) is connected 14 with electric quantity acquisition module) output terminal connect respectively CPU module (12) input end, CPU module (12) connects man-machine interface (13).
2. a kind of online high-pressure centrifugal water pump efficiency detection device according to claim 1 is characterized in that: described temperature difference transmitter (3) employing thermal resistor series connection [constant loop.
3. a kind of online high-pressure centrifugal water pump efficiency detection device according to claim 2 is characterized in that: consist of constant-current source circuit by operational amplifier U1, operational amplifier U2, resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5 in the described [constant loop; Outlet temperature detects resistance R t1, inlet temperature detects resistance R t2, precision resistance RJ and is serially connected in the [constant loop; Outlet temperature detects two test ends of resistance R t1 respectively through resistance R 6, resistance R 7, capacitor C 1, capacitor C 2, the input circuit that capacitor C 3 consists of is connected to in-phase input end and the inverting input of instrument amplifier U3, it is the left end that outlet temperature detects resistance R t1 upper end one tunnel contact resistance R6 of branch, the right-hand member of resistance R 6 connects capacitor C 1, the in-phase input end of the upper end of capacitor C 2 and instrument amplifier U3, outlet temperature detects the left end of resistance R t1 lower end one tunnel contact resistance R7 of branch, and the right-hand member of resistance R 7 connects capacitor C 1, the inverting input of the lower end of capacitor C 3 and instrument amplifier U3; Inlet temperature detects two test ends of resistance R t2 and receives in-phase input end and the end of oppisite phase input end of instrument amplifier U5 through the input circuit of resistance R 8, resistance R 9, capacitor C 4, capacitor C 5, capacitor C 6 formations respectively, be the left end that inlet temperature detects one tunnel contact resistance R8 of branch of resistance R t2 upper end, the right-hand member of R8 connects capacitor C 4, the upper end of capacitor C 5 and the in-phase input end of instrument amplifier U5; Inlet temperature detects the left end of resistance R t2 lower end one tunnel contact resistance R9 of branch, and the right-hand member of resistance R 9 connects capacitor C 4, the lower end of capacitor C 6 and the reverse input end of instrument amplifier U5; The output terminal TO of instrument amplifier U3 connects the in-phase input end of temperature difference detecting amplifier U4; The output terminal Ti of instrument amplifier U5 is connected to the reverse input end of temperature difference detecting amplifier U4, the temperature difference is exported by the TC end of temperature difference detecting amplifier U4 after amplifying, output terminal Ti is connected to the in-phase end of inlet temperature amplifier U6 simultaneously, the end of oppisite phase of inlet temperature amplifier U6 is connected to precision resistance RJ, and the temperature signal after amplifying is by the output terminal TI output of inlet temperature amplifier U6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110087969 CN102135090B (en) | 2011-04-08 | 2011-04-08 | Device for detecting efficiency of high-pressure centrifugal water pump on line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110087969 CN102135090B (en) | 2011-04-08 | 2011-04-08 | Device for detecting efficiency of high-pressure centrifugal water pump on line |
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| Publication Number | Publication Date |
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| CN102135090A CN102135090A (en) | 2011-07-27 |
| CN102135090B true CN102135090B (en) | 2013-01-02 |
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| CN 201110087969 Expired - Fee Related CN102135090B (en) | 2011-04-08 | 2011-04-08 | Device for detecting efficiency of high-pressure centrifugal water pump on line |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5695473A (en) * | 1994-07-27 | 1997-12-09 | Sims Deltec, Inc. | Occlusion detection system for an infusion pump |
| CN101196185A (en) * | 2007-12-20 | 2008-06-11 | 奇瑞汽车有限公司 | Method of testing self-changing gearbox oil pump assembly |
| CN201281012Y (en) * | 2008-10-24 | 2009-07-29 | 四川奥特附件维修有限责任公司 | Aviation high-pressure fuel pump test system |
| CN201778993U (en) * | 2010-07-09 | 2011-03-30 | 北京新水源景科技有限公司 | Non-contact intelligent liquid flow instrument |
| CN201943934U (en) * | 2011-04-08 | 2011-08-24 | 大庆东达节能技术开发服务有限公司 | On-line high-pressure centrifugal water pump efficiency detection device |
-
2011
- 2011-04-08 CN CN 201110087969 patent/CN102135090B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5695473A (en) * | 1994-07-27 | 1997-12-09 | Sims Deltec, Inc. | Occlusion detection system for an infusion pump |
| CN101196185A (en) * | 2007-12-20 | 2008-06-11 | 奇瑞汽车有限公司 | Method of testing self-changing gearbox oil pump assembly |
| CN201281012Y (en) * | 2008-10-24 | 2009-07-29 | 四川奥特附件维修有限责任公司 | Aviation high-pressure fuel pump test system |
| CN201778993U (en) * | 2010-07-09 | 2011-03-30 | 北京新水源景科技有限公司 | Non-contact intelligent liquid flow instrument |
| CN201943934U (en) * | 2011-04-08 | 2011-08-24 | 大庆东达节能技术开发服务有限公司 | On-line high-pressure centrifugal water pump efficiency detection device |
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| CN102135090A (en) | 2011-07-27 |
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