CN102135090A - 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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- CN102135090A CN102135090A CN 201110087969 CN201110087969A CN102135090A CN 102135090 A CN102135090 A CN 102135090A CN 201110087969 CN201110087969 CN 201110087969 CN 201110087969 A CN201110087969 A CN 201110087969A CN 102135090 A CN102135090 A CN 102135090A
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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 a kind of online centrifugal high pressure pump efficiency detection device.
Background technique
The centrifugal high pressure water pump is the necessary equipment of 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 big, 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, be convenient to operation and data computation, obtained at the scene, oil field using widely.
In the prior art to the test of centrifugal high pressure pump efficiency generally adopt be artificial image data, artificial Calculation Method 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.Though artificial image data Calculation Method can reach the purpose of the working condition of understanding pump, but because limitation of field condition and artificial factor, the acquisition precision of data, 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 the use of centrifugal high pressure pump efficiency, the needs of prior art incompatibility modern management simultaneously for a long time.
Summary of the invention
The invention reside in and overcome the problem that the use portable instrument test pump efficiency long time stability that exist in the background technique are poor, be not suitable for on-the-spot online detection, and provide a kind of online centrifugal high pressure pump efficiency detection device, this device has thoroughly been eliminated the influence of long line, the real-time online of having realized the Operational Limits of centrifugal high pressure water pump detects, and improved the 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 centrifugal high pressure 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 cable respectively connect analogue collection module; Motor connects a winding of current transformer, voltage transformer, current transformer, voltage measuring transformer winding cable respectively are connected to electric quantity acquisition module, the output terminal of analogue collection module, electric quantity acquisition module connects the CPU module input respectively, 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 centrifugal high pressure 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 influence 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 influence, adapted to the needs of modern management.
Description of drawings:
Accompanying drawing 1 is structural representation of the present invention (an a line left-half at the scene, right half part is in the control room);
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:
Below in conjunction with accompanying drawing will the invention will be further described:
As shown in Figure 1, this online centrifugal high pressure 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 cable respectively connect analogue collection module 15; Motor 8 connects a winding of current transformer 10, voltage transformer 11, current transformer 10, voltage transformer 11 measurement windings cable respectively are connected to electric quantity acquisition module 14, the output terminal of analogue collection module 15, electric quantity acquisition module 14 connects CPU module 12 input ends respectively, 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.
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 constitutes 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 constitutes 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 constitutes 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. online centrifugal high pressure pump efficiency detection device, comprise 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), it is characterized in that: 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) cable connects temperature difference transmitter (3), and temperature difference transmitter (3) cable connects CPU module (12); Inlet pressure transmitter (2), outlet pressure transmitter (6) cable respectively connect analogue collection module (15); Motor (8) connects a winding of current transformer (10), voltage transformer (11), current transformer (10), voltage transformer (11) measurement winding cable respectively are connected to electric quantity acquisition module (14), the output terminal of analogue collection module (15), electric quantity acquisition module (14) connects CPU module (12) input end respectively, and CPU module (12) connects man-machine interface (13).
2. a kind of online centrifugal high pressure pump efficiency detection device according to claim 1 is characterized in that: described temperature difference transmitter (3) adopts thermal resistor series connection [constant loop.
3. a kind of online centrifugal high pressure pump efficiency detection device according to claim 2, it is characterized in that: in the described [constant loop by U1, U2, R1, R2, R3, R4, R5 constitutes constant-current source circuit, outlet temperature detects resistance R t1, inlet temperature detects resistance R t2, 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 constitutes is connected to in-phase input end and the inverting input of U3, and inlet temperature detects two test ends of resistance R t2 respectively through R8, R9, C4, C5, the input circuit that C6 constitutes is received in-phase input end and the end of oppisite phase input end of U5; Output terminal TO, the Ti of U3, U5 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 precision resistance RJ, and the temperature signal after amplifying is by the output terminal TI output of U6.
Priority Applications (1)
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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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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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CN102135090A true CN102135090A (en) | 2011-07-27 |
CN102135090B CN102135090B (en) | 2013-01-02 |
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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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Granted publication date: 20130102 Termination date: 20180408 |