CN2042523U - Automatic measuring instrument of water-pump efficiency - Google Patents
Automatic measuring instrument of water-pump efficiency Download PDFInfo
- Publication number
- CN2042523U CN2042523U CN 87207894 CN87207894U CN2042523U CN 2042523 U CN2042523 U CN 2042523U CN 87207894 CN87207894 CN 87207894 CN 87207894 U CN87207894 U CN 87207894U CN 2042523 U CN2042523 U CN 2042523U
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- water
- latch
- transducer
- pio
- measuring instrument
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- Measuring Volume Flow (AREA)
Abstract
The utility model discloses an automatic measuring instrument of water-pump efficiency, mainly comprising a temperature sensor, a temperature differential temperature sensor, an inlet and an outlet pressure sensor, an amplifier, an analogue-to-digital converter, a data latch, a data acquisition, processing and displaying part. The automatic measuring instrument of water-pump efficiency not only can measure water-pump efficiency, water-pump temperature, water-pump temperature difference, the pressure of the inlet and outlet of the water-pump, and the pressure divergence of the water-pump but also can measure water injection rate and specific power consumption.
Description
The utility model belongs to the device of measuring efficient.
The test method of present existing pump efficiency is mainly taked discharge method, promptly measure water outlet flow, lift, and air horsepower after calculate pump efficiency.But water pump takes said method to measure when being installed in the scene.Another kind method is to adopt thermodynamic (al) method, promptly measures the numerical value that required parameter calculates pump efficiency afterwards again with primary instrument.
The purpose of this utility model is to make the thermodynamic (al) method of a kind of employing, can measure and directly show the efficient and the relevant parameter thereof of tested water pump automatically.
This detector is formula η=(r △ p)/(a △ p+Cp △ T) design according to thermodynamic (al) principle.Wherein r, a, C
PBe thermodynamic (al) parameter, △ P is that pressure difference, △ T are temperature difference.Comprise temperature transducer according to above-mentioned this instrument of formula, pressure transducer, amplifier, analog-digital converter, data latches, imputation machine interface, microprocessor CPU and display unit.After amplifying, the simulate amount of being measured by temperature transducer, pressure transducer sends into A/D transducer (analog-digital converter), digital quantity by A/D transducer output deposits first order latch and secondary level latch in, the data of taking out from latch as calculated the machine interface deliver to the microprocessor CPU by above-mentioned formula carry out computing, at last by display device, demonstrate numerical value.This instrument also can according to formula Q=(N η)/(△ P) and J=(N)/(Q) wherein N be air horsepower.Q is that flow, J are specific energy consumption, air horsepower is imported this instrument, and above-mentioned two parameters can record.
The superiority of this instrument is that it can not only measure the efficient of water pump at the scene automatically, and can measure the temperature, the temperature difference, the pressure of gateway, the flow and the specific energy consumption of water of exit of pump.
Narrate most preferred embodiment of the present utility model below in conjunction with accompanying drawing:
Fig. 1 is a pump efficiency automatic measuring instrument electrical schematic
Wherein: 1, temperature transducer, 2, temperature sensor, 3,4 are respectively formed secondary latch for one-level latch, 21～24 for one-level latch, 25 and 26,27 and 28,29 and 30,31 and 32 for one-level latch, 17～20 for one-level latch, 13～16 for A/D mould one number converter, 9～12 for pressure transducer, 5,6,7,8.
33: be PIO
1The computer data acquiring interface;
34: be clock circuit (being CP)
35: microprocessor CPU
36: read-only memory ROM
37: be PIO
2The computer data control interface;
38: keyboard is selected
39: the keyboard input
40: the air horsepower input end
41: display driver
42: display device.
The utility model mainly is made up of following components: temperature transducer 1, temperature difference temperature transducer 2, inlet pressure transducer 3, outlet pressure sensor 4, the sensor becomes non-electric charge quantity signalling into electrical signal, behind amplifier by A/D transducer (5,6,7,8) convert this analog amount to digital quantity, store in the first order latch (9～24), the signal of first order latch output is sent in the latch of the second level, and the purpose that this instrument adopts twin-stage to latch is: the BCD code conversion of FG14433A/D transducer output is stable and line output.First order latch adopts intergrated circuit 4042, and second level latch constitutes 4 groups of latch respectively by LS3748D trigger 25 and 26,27 and 28,29 and 30,31 and 32, and the signal of second level latch output is input to computer interface PIO by datawire
1In, the numerical control end of second level latch and interface PIO
2Be connected, CPU according to the keyboard input state from PIO
1Choose suitable data by formula η=(r △ p)/(a △ p+Cp △ T) carry out computing and draw efficient numerical value, and through in display device, demonstrating numerical value behind the display driver.In order to measure water displacement Q and specific energy consumption J, to have put air horsepower inlet opening 40 at the rear board meter of instrument, it is temperature indication button T that front panel is provided with eight buttons, temperature difference button △ T, inlet pressure indication button P, outlet pressure indication button P, pressure reduction indication button △ P, pump efficiency indication button η, water displacement Q, specific energy consumption J.This instrument also is provided with read-only memory ROM36 and is used for being cured as the monitor program of this instrument establishment and a, r, c
PData.
Claims (3)
1, a kind of pump efficiency automatic measuring instrument, it comprises display device and display driver, keyboard input, keyboard selection, it is characterized in that it also comprises temperature transducer, temperature difference temperature transducer, inlet pressure transducer, outlet pressure sensor, A-D converter, first order latch, second level latch, computer interface PIO
1And PIO
2, microprocessor CPU and the read-only memory ROM that is connected with CPU, wherein the sensor is connected with corresponding A/D transducer respectively, the output terminal of A/D transducer connects first order latch, first order latch respectively output terminal link to each other with the input end of second level latch, the datawire of second level latch and the interface PIO of computer
1Numerical control line that be connected, secondary latchs and computer interface PIO
2Be connected, data/address bus and the PIO of microprocessor CPV
1, PIO
2Be connected, display device is connected with display driver, and driver is connected with data processing section CPV.
2, automatic measuring instrument as claimed in claim 1 is characterized in that also being provided with at its rear board place an air horsepower input end that is connected with data/address bus.
3, automatic measuring instrument as claimed in claim 1 is characterized in that above-mentioned A/D analog-digital converter, first order latch, second level latch respectively are four, consists of one group with temperature transducer, temperature sensor, inlet pressure transducer, outlet pressure sensor respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207894 CN2042523U (en) | 1987-05-09 | 1987-05-09 | Automatic measuring instrument of water-pump efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87207894 CN2042523U (en) | 1987-05-09 | 1987-05-09 | Automatic measuring instrument of water-pump efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2042523U true CN2042523U (en) | 1989-08-09 |
Family
ID=4823267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87207894 Withdrawn CN2042523U (en) | 1987-05-09 | 1987-05-09 | Automatic measuring instrument of water-pump efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2042523U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694212B (en) * | 2009-10-21 | 2012-07-25 | 中国农业大学 | Pump and pump station integrated tester |
| CN103982412A (en) * | 2014-04-14 | 2014-08-13 | 国机重工（常州）挖掘机有限公司 | Variable-displacement hydraulic pump power curve tester |
| CN104632606A (en) * | 2015-01-26 | 2015-05-20 | 江苏大学 | Pumping unit on-line energy consumption testing and analyzing system and method |
| CN104895777A (en) * | 2015-05-11 | 2015-09-09 | 中国石油天然气集团公司 | Method and device for determining dynamic mechanical efficiency of compressor |
| CN105806540A (en) * | 2016-05-09 | 2016-07-27 | 浙江省机电设计研究院有限公司 | Pump inlet and outlet end pressure measurement instrument control device and method |
-
1987
- 1987-05-09 CN CN 87207894 patent/CN2042523U/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101694212B (en) * | 2009-10-21 | 2012-07-25 | 中国农业大学 | Pump and pump station integrated tester |
| CN103982412A (en) * | 2014-04-14 | 2014-08-13 | 国机重工（常州）挖掘机有限公司 | Variable-displacement hydraulic pump power curve tester |
| CN103982412B (en) * | 2014-04-14 | 2016-02-24 | 国机重工（常州）挖掘机有限公司 | A kind of volume adjustable hydraulic pump power curve testing instrument |
| CN104632606A (en) * | 2015-01-26 | 2015-05-20 | 江苏大学 | Pumping unit on-line energy consumption testing and analyzing system and method |
| CN104632606B (en) * | 2015-01-26 | 2017-06-27 | 江苏大学 | A kind of online energy consumption testing analysis system of water pump assembly and method |
| CN104895777A (en) * | 2015-05-11 | 2015-09-09 | 中国石油天然气集团公司 | Method and device for determining dynamic mechanical efficiency of compressor |
| CN104895777B (en) * | 2015-05-11 | 2017-03-22 | 中国石油天然气集团公司 | Method and device for determining dynamic mechanical efficiency of compressor |
| CN105806540A (en) * | 2016-05-09 | 2016-07-27 | 浙江省机电设计研究院有限公司 | Pump inlet and outlet end pressure measurement instrument control device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C15 | Extension of patent right duration from 15 to 20 years for appl. with date before 31.12.1992 and still valid on 11.12.2001 (patent law change 1993) | ||
| RN01 | Renewal of patent term | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |