CN2645044Y - Electronic expansion valve flow detection system - Google Patents
Electronic expansion valve flow detection system Download PDFInfo
- Publication number
- CN2645044Y CN2645044Y CN 03232300 CN03232300U CN2645044Y CN 2645044 Y CN2645044 Y CN 2645044Y CN 03232300 CN03232300 CN 03232300 CN 03232300 U CN03232300 U CN 03232300U CN 2645044 Y CN2645044 Y CN 2645044Y
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- valve
- joint
- expansion valve
- test
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Abstract
The utility model relates to a flow measuring system for the electronic expansion valve; the measuring precision is affected to a certain degree by the low efficiency, bad accuracy and artificial factors of the prior measuring system. The utility model comprises a filter, a first reducer, a first gas storage tank, a first air intake solenoid valves, a mass flow meter and a first joint, all of which are connected in series successively. The utility model is characterized in that a second reducer, a second gas storage tank and a second air intake solenoid valve are connected in series and then connected in parallel with the first reducer and the first air intake solenoid valve. An air release valve is fixed at the front end of the mass flow meter, between which and the first joint a pressure meter is fixed. The utility model is easy to operate. Two parallel-connected gas paths, each of which controls a measuring state, improve the efficiency of the measuring system and eliminate the artificial factors so that the accuracy and reliability of the measuring result is ensured.
Description
Technical field
The utility model relates to a kind of flow testing system that is used for electric expansion valve.
Background technology
It is discharge characteristic that electric expansion valve has an important test index, its test request is: feed 0.1Mpa gas at the electric expansion valve induction pipe, when opening coil to 250 pulse and two states of 500 pulses, measure the flow of electric expansion valve outlet, and the result of twice gained is analyzed, thereby estimate the discharge characteristic of electric expansion valve.Existing flow testing system (as Fig. 1), its successively by filtrator 1 ', decompressor 2 ', gas tank 3 ', air inlet solenoid valve 4 ', mass flowmeter 5 ', joint 6 ' serial connection forms, joint 6 ' on connect electric expansion valve 7 ', gas tank 3 ' and air inlet solenoid valve 4 ' between be connected to tensimeter 8 ', air inlet solenoid valve 4 ' and mass flowmeter 5 ' between be connected to pressure-releasing electromagnetic valve 9 ', concrete testing procedure is as follows: earlier gas circuit is transferred to tensimeter indication 0.1Mpa, opening coil to 250 pulse, because of the valve port of electric expansion valve is opened, make pressure decline in the gas circuit, regulate decompressor compensation pressure drop, make tensimeter be designated as 0.1Mpa, survey the outlet flow value, and then opening coil to 500 pulse must be regulated decompressor compensation pressure drop once more because valve port opening increases, and pressure loses once more, survey the outlet flow value when making tensimeter be designated as 0.1Mpa, thereby finish once test.When the valve of electric expansion valve footpath during greater than 2.4 millimeters, because the valve footpath is bigger, obviously there is following shortcoming in above-mentioned test macro: switch back and forth between 250 pulses and 500 pulses during 1, owing to test, make pressure transient in the test, reach the necessary manual adjustments of 0.1Mpa, efficient is not high; 2, different product or identical product tested once more can not be fixed on same basic point, the consistance of test is bad, thereby has influenced the accuracy of test; 3, when the manual adjustments force value, different operating personnel, different operating habits all can have certain deviation, and artifical influence factor is very big, thereby influences measuring accuracy to a certain extent; 4, electric expansion valve has straight tube and two kinds of structures of bend pipe, tested valve body will keep contained spring vertical, otherwise test result there is certain influence, and above-mentioned test macro has only a joint (being generally the horizontal direction setting), the contained spring that can only guarantee a kind of structure (straight tube structure) electric expansion valve is vertical, be difficult to guarantee that the contained spring of another kind of structure (bend pipe structure) electric expansion valve is vertical, so the test result of bend pipe structure electric expansion valve is had certain influence.
The utility model content
Technical problem to be solved in the utility model is the defective that overcomes above-mentioned prior art, a kind of flow testing system of pressure stability is provided, easy and simple to handle, do not need manual adjustments in the test process, eliminate artificial factor, improve the testing efficiency and the precision of test macro, guarantee during test that the electric expansion valve contained spring of two kinds of structures is vertical.
The technical scheme that the utility model adopted is such: the flow of electronic expansion valve test macro, comprise filtrator, first decompressor, first gas tank, the first air inlet solenoid valve, mass flowmeter and first joint of serial connection successively, it is characterized in that being connected in parallel on after second decompressor, second gas tank and the second air inlet solenoid valve are connected in series the two ends of first decompressor and the first air inlet solenoid valve, the front end of described mass flowmeter is connected to pressure-releasing electromagnetic valve, is connected to tensimeter between the mass flowmeter and first joint.For existing test macro, test macro of the present utility model has increased a gas circuit, can form 250 pulses and two gas circuits of 500 pulses like this, and two gas circuits respectively are furnished with decompressor, gas tank and air inlet solenoid valve, independently test separately.Because the second test that the utility model carries out is independent separately, does not need to adjust back and forth pulse value, guarantees the pressure stability of test gas circuit, has improved the testing efficiency of test macro; Thereby the basic point of each test is fixed the consistance that well guarantees test; Move after manometric and make displayed value directly be the force value of electric expansion valve draft tube, avoided the loss of pressure; In test process, do not need manual adjustments, eliminated artificial factor, improved the precision of test macro.
When using test macro of the present utility model first, must debug earlier, promptly use standard valve, coil is opened into 250 pulses, the first air inlet solenoid valve is opened, and pressure-releasing electromagnetic valve is closed, and regulating first decompressor, to make the tensimeter displayed value be 0.1Mpa, test the flow of outlet, and first decompressor is locked; Coil is opened into the gas circuit that 250 pulses are closed in 500 pulses simultaneously, the second air inlet solenoid valve is opened again, and pressure-releasing electromagnetic valve is closed, regulating second decompressor, to make the tensimeter displayed value be 0.1Mpa, the flow of test outlet, and, finish debugging with the locking of second decompressor.
When normal the use, to tested electric expansion valve, only need respectively coil to be opened into two states (250 and 500 pulse) and to open two gas circuits respectively, just can test, in test, do not need to regulate again decompressor, thereby test in stable gas circuit.
Be connected in series first ball valve between the described flow of electronic expansion valve expansion test macro, tensimeter and first joint, be connected to second ball valve and second joint of connecting between tensimeter and first ball valve.The utility model is provided with two joints, and respectively with ball valve control, a joint is for being horizontally disposed with, and another joint is vertical the setting, is used to survey straight tube and bend pipe electric expansion valve separately, can guarantee that all the contained spring of tested valve is vertical.Select correspondingly joint according to the structure of electric expansion valve.
The utility model is easy and simple to handle, by the gas circuit of two parallel connections is set, control a test mode separately, have the following advantages: 1) manometric force value need not adjusted between two test modes (250 and 500 pulse) back and forth, effectively guarantee the pressure stability of test gas circuit, improved the testing efficiency of test macro; 2) basic point of each test is fixed, thereby has well guaranteed the consistance of test; 3) before tensimeter is arranged on tested valve, make manometric displayed value directly be the force value of tested valve draft tube, avoided the loss of pressure, improved the accuracy of test macro; 4) in test, do not need manual adjustments, eliminated human factor.In addition, the utility model is provided with two test splices, is used for testing the electric expansion valve of straight tube and two kinds of structures of bend pipe respectively, selects different joints as required, has guaranteed that fully the contained spring of valve body is vertical, further guarantees test result accurately and reliably.
Below in conjunction with drawings and Examples the utility model is further described.
Description of drawings
Fig. 1 is the schematic diagram of existing flow of electronic expansion valve test macro.
Fig. 2 is a schematic diagram of the present utility model.
Embodiment
As shown in Figure 2, the flow of electronic expansion valve test macro, comprise the two ends that are connected in parallel on first decompressor 2 and the first air inlet solenoid valve 4 after filtrator 1, first decompressor 2, first gas tank 3, the first air inlet solenoid valve 4, mass flowmeter 5 and first joint, 6, the second decompressors 7, second gas tank 8 and the second air inlet solenoid valve 9 of serial connection are connected in series successively.The front end of mass flowmeter 5 is connected to pressure-releasing electromagnetic valve 10, be connected to tensimeter 11 between the mass flowmeter 5 and first joint 6, be connected between the tensimeter 11 and first ball valve 12 after being connected in series first ball valve, 12, the second ball valves 13 and 14 series connection of second joint between tensimeter 11 and first joint 6.First joint 6 can connect straight tube electric expansion valve 15, the second joints 14 can connect bend pipe electric expansion valve 16, selects correspondingly joint according to the structure of electric expansion valve.The gas circuit of being made up of first decompressor 2, first gas tank 3 and the first air inlet solenoid valve 4 is 250 pulse gas circuits, and the gas circuit of being made up of second decompressor 7, second gas tank 8 and the second air inlet solenoid valve 9 is 500 pulse gas circuits.
Claims (2)
1, flow of electronic expansion valve test macro, comprise filtrator (1), first decompressor (2), first gas tank (3), the first air inlet solenoid valve (4), mass flowmeter (5) and first joint (6) of serial connection successively, it is characterized in that being connected in parallel on after second decompressor (7), second gas tank (8) and the second air inlet solenoid valve (9) are connected in series the two ends of first decompressor (2) and the first air inlet solenoid valve (4), the front end of described mass flowmeter (5) is connected to pressure-releasing electromagnetic valve (10), is connected to tensimeter (11) between mass flowmeter (5) and first joint (6).
2, flow of electronic expansion valve expansion test macro according to claim 1, it is characterized in that being connected in series first ball valve (12) between described tensimeter (11) and first joint (6), be connected to second ball valve (13) and second joint (14) of connecting between tensimeter (11) and first ball valve (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232300 CN2645044Y (en) | 2003-06-15 | 2003-06-15 | Electronic expansion valve flow detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03232300 CN2645044Y (en) | 2003-06-15 | 2003-06-15 | Electronic expansion valve flow detection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2645044Y true CN2645044Y (en) | 2004-09-29 |
Family
ID=34291407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03232300 Expired - Fee Related CN2645044Y (en) | 2003-06-15 | 2003-06-15 | Electronic expansion valve flow detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2645044Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464225B (en) * | 2009-01-12 | 2010-08-25 | 中国计量学院 | Dynamic pressure test device with thermal power expansion valve |
| CN101846536A (en) * | 2010-05-27 | 2010-09-29 | 中国计量学院 | Device and method for measuring flow of electronic expansion valve |
| CN103267872A (en) * | 2013-05-16 | 2013-08-28 | 桂林电子科技大学 | Device for measuring flow rate and flow quantity of gas released by matter at different temperatures |
| CN110691959A (en) * | 2017-05-30 | 2020-01-14 | 萨基姆通讯能源及电信联合股份公司 | Regulator for gas cylinder |
-
2003
- 2003-06-15 CN CN 03232300 patent/CN2645044Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101464225B (en) * | 2009-01-12 | 2010-08-25 | 中国计量学院 | Dynamic pressure test device with thermal power expansion valve |
| CN101846536A (en) * | 2010-05-27 | 2010-09-29 | 中国计量学院 | Device and method for measuring flow of electronic expansion valve |
| CN101846536B (en) * | 2010-05-27 | 2011-08-24 | 中国计量学院 | Device and method for measuring flow of electronic expansion valve |
| CN103267872A (en) * | 2013-05-16 | 2013-08-28 | 桂林电子科技大学 | Device for measuring flow rate and flow quantity of gas released by matter at different temperatures |
| CN110691959A (en) * | 2017-05-30 | 2020-01-14 | 萨基姆通讯能源及电信联合股份公司 | Regulator for gas cylinder |
| CN110691959B (en) * | 2017-05-30 | 2021-12-21 | 萨基姆通讯能源及电信联合股份公司 | Expansion valve for a gas cylinder and method for monitoring a gas cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040929 |