CN203443772U - Thermal expansion valve flow testing apparatus - Google Patents
Thermal expansion valve flow testing apparatus Download PDFInfo
- Publication number
- CN203443772U CN203443772U CN201320492548.3U CN201320492548U CN203443772U CN 203443772 U CN203443772 U CN 203443772U CN 201320492548 U CN201320492548 U CN 201320492548U CN 203443772 U CN203443772 U CN 203443772U
- Authority
- CN
- China
- Prior art keywords
- display screen
- expansion valve
- valve
- way solenoid
- solenoid valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a thermal expansion valve flow testing apparatus. The front end of the apparatus is a work table. A testing tool is mounted in the center position of the table top of the work table. A constant temperature bath controller, an air inlet pipe interface, and an air outlet pipe interface are arranged in the right side of the testing tool. A power switch is arranged in the left side of the work table. A display screen is arranged right above the work table. A qualification indicating lamp and a disqualification indicating lamp are arranged below the display screen. An air inlet pressure gage is arranged in the left side of the display screen, while an air outlet pressure gage is arranged in the right side of the display screen. An activate key and a sudden stop key are arranged in the middle of a key groove below the work table. The lower part of the left side of the apparatus is provided with an air source interface. The thermal expansion valve flow testing apparatus overcomes the problems that conventional manual flow tests are low in testing precision, complex in operation, and low in testing efficiency. In order to realize the automatic flow test and adjustment of a thermal expansion valve, a programmable controller is taken as a core for achieve the control of the testing process. The thermal expansion valve flow testing apparatus is high in testing precision and convenient and safe for clamping.
Description
Technical field
The utility model relates to flow rate test regulating device, especially relates to a kind of heating power expansion valve flow rate test regulating device.
Background technology
Heating power expansion valve is the vitals that forms refrigerating plant, is one of four basic equipments in refrigeration system, is used for realizing condensing pressure to the throttling of evaporating pressure, controls the flow of cold-producing medium simultaneously.Current means of testing is generally manual test and regulates, and heating power expansion valve is installed to the calibration cell precooling of putting into mixture of ice and water after test fixture, and the manual adjustments degree of superheat is made after dynamic pressure test traffic value again.Manual test degree of regulation is low, complicated operation, testing efficiency are low, causes the flow value of final test inaccurate, consistance is poor, and test and adjust flux become the technical bottleneck of heating power expansion valve manufacturing enterprise accurately.Therefore development and Design convenient test, test result is accurate, testing efficiency is high heating power expansion valve flow testing device and method of testing, be the demand that meets heating power expansion valve manufacturing enterprise, the effective way that improves heating power expansion valve quality.
Summary of the invention
Various shortcomings while regulating in order to overcome manual test, improve whole work efficiency and accuracy, and the purpose of this utility model is to provide a kind of heating power expansion valve flow testing device.
The technical solution adopted in the utility model is:
This device front end is worktable, on the table top centre position of worktable, test fixture is installed, there are chamber controller, draft tube interface and escape pipe interface in test fixture right side, there is power switch in worktable left side, has display screen directly over worktable, and display screen downside has qualified pilot lamp and defective pilot lamp, there is boost gauge in display screen left side, the display screen right side tensimeter of giving vent to anger, worktable downside is equipped with start key and rapid stop key by interposition in keyway, and there is gas source interface below, equipment left side.
Described test fixture is fixed on worktable by frock base plate, frock base plate is provided with cylinder near display screen one side, cylinder upper end connects motor by motor fixing plate, adjusting tool is installed in motor below, frock base plate is away from display screen one side sectional fixture, heating power expansion valve is clipped in fixture, and the temperature-sensitive bag of heating power expansion valve stretches out outside frock base plate, and immerses in calibration cell.
Described draft tube interface and escape pipe interface are connected to respectively different inner air paths, be that draft tube interface connects air inlet gas circuit, air inlet gas circuit is divided into two-way air inlet, one tunnel Hi-pot test gas enters high pressure gas holder through the first filtration under diminished pressure valve, by first two-position two-way solenoid valve, arrive draft tube interface again, in the connection gas circuit of first two-position two-way solenoid valve and draft tube interface, boost gauge is installed, another road low voltage experiment gas enters lower pressure tanks through the second filtration under diminished pressure valve, by second two-position two-way solenoid valve and retaining valve, arrive draft tube interface again, retaining valve is arranged in the connection gas circuit of first two-position two-way solenoid valve and second two-position two-way solenoid valve, escape pipe interface connects the gas circuit of giving vent to anger, first escape pipe interface is connected to voltage stabilizing gas tank, after give vent to anger tensimeter and pressure transducer, be divided into two-way, the 3rd, one tunnel two-position two-way solenoid valve and flow proportion valve are connected to digital flowmeter, and another road is connected to orifice plate through the 4th two-position two-way solenoid valve.
First test the degree of superheat of heating power expansion valve and do dynamic pressure, heating power expansion valve is installed on fixture, now in the calibration cell of the temperature-sensitive package location of heating power expansion valve in can immersion equipment, carry out precooling, connect again draft tube interface and escape pipe interface to fixture, from the second filtration under diminished pressure valve, pass into test gas, open second two-position two-way solenoid valve and the 4th two-position two-way solenoid valve, test gas is discharged from orifice plate, after outlet stable gas pressure, pressure transducer reads out mouth pressure value and does dynamic pressure as the degree of superheat, carry out again flow rate test checking, close second two-position two-way solenoid valve and the 4th two-position two-way solenoid valve, open first two-position two-way solenoid valve and the 3rd two-position two-way solenoid valve, the first filtration under diminished pressure valve passes into test gas, adjust flux proportioning valve is made dynamic pressure value until top hole pressure value reaches the degree of superheat recording above, digital flowmeter reading flow value after top hole pressure is stable, flow value meet test request verify qualified, test finishes, do not meet the demands and continue to regulate the degree of superheat to do dynamic pressure, repetitive cycling test is until flow value is qualified, if the test duration is overtime, judge test failure, finish test, bright defective pilot lamp.
The utility model is compared the beneficial effect having with background technology:
1, the utility model adopts vertical operation platform structure, and operation, maintenance and improvement easily, adopt PLC controller to realize the Automatic Control of test process, realize pressure locking, and built-in pressure zero calibration system.
2, pressure transducer and flow sensor are housed in equipment, automatic pressure acquisition and flow value, automatic decision also calculates further work, and whole test process automation degree is high.
3, testing of equipment result high conformity, accuracy is high, simple to operate, and safety coefficient is high.
Accompanying drawing explanation
Fig. 1 is front elevational schematic of the present utility model.
Fig. 2 is the schematic side view of Fig. 1.
Fig. 3 is test fixture front elevation of the present utility model.
Fig. 4 is the side view of Fig. 3.
Fig. 5 is the vertical view of Fig. 3.
Fig. 6 is draft tube interface inner air path figure of the present utility model.
Fig. 7 is escape pipe interface inner air path figure of the present utility model.
Fig. 8 is test technology process flow diagram of the present utility model.
In figure: 1. gas source interface, 2. boost gauge, 3. the tensimeter of giving vent to anger, 4. power switch, 5. draft tube interface, 6. escape pipe interface, 7. press keyway, 8. start key, 9. rapid stop key, 10. display screen, 11. qualified pilot lamp, 12. defective pilot lamp, 13. chamber controllers, 14. test fixtures, 15. worktable, 16. cabinet door, 21. frock base plates, 22. motors, 23. adjusting tools, 24. fixtures, 25. cylinders, 26. motor fixing plates, 27. heating power expansion valves, 31. first filtration under diminished pressure valves, 32. second filtration under diminished pressure valves, 33. high pressure gas holders, 34. lower pressure tanks, 35. first two-position two-way solenoid valves, 36. second two-position two-way solenoid valves, 37. the 3rd two-position two-way solenoid valves, 38. the 4th two-position two-way solenoid valves, 39. retaining valves, 40. voltage stabilizing gas tanks, 41. pressure transducers, 42. flow proportion valves, 43. digital flowmeters, 44. orifice plates.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
As Fig. 1, shown in Fig. 2, this device front end is worktable 15, on the table top centre position of worktable 15, test fixture 14 is installed, there is chamber controller 13 on test fixture 14 right sides, draft tube interface 5 and escape pipe interface 6, there is power switch 4 in worktable 15 left sides, directly over worktable 15, there is display screen 10, display screen 10 downsides have qualified pilot lamp 11 and defective pilot lamp 12, there is boost gauge 2 in display screen 10 left sides, the display screen 10 right sides tensimeter 3 of giving vent to anger, worktable 15 downsides are equipped with start key 8 and rapid stop key 9 by the interior interposition of keyway 7, there is gas source interface 1 below, equipment left side.
As shown in Fig. 3, Fig. 4, Fig. 5, described test fixture 14 is fixed on worktable 15 by frock base plate 21, frock base plate 21 is provided with cylinder 25 near display screen 10 1 sides, cylinder 25 upper ends connect motor 22 by motor fixing plate 26, adjusting tool 23 is installed in motor 22 belows, and frock base plate 21 is away from display screen 10 1 side sectional fixtures 24, and heating power expansion valve 27 is clipped in fixture 24, the temperature-sensitive bag of heating power expansion valve 27 stretches out outside frock base plate 21, and immerses in calibration cell.
As Fig. 6, shown in Fig. 7, described draft tube interface 5 and escape pipe interface 6 are connected to respectively different inner air paths, be that draft tube interface 5 connects air inlet gas circuit, air inlet gas circuit is divided into two-way air inlet, one tunnel Hi-pot test gas enters high pressure gas holder 33 through the first filtration under diminished pressure valve 31, by first two-position two-way solenoid valve 35, arrive draft tube interface 5 again, in the connection gas circuit of first two-position two-way solenoid valve 35 and draft tube interface 5, boost gauge 2 is installed, another road low voltage experiment gas enters lower pressure tanks 34 through the second filtration under diminished pressure valve 32, by second two-position two-way solenoid valve 36 and retaining valve 39, arrive draft tube interface 5 again, retaining valve 39 is arranged in the connection gas circuit of first two-position two-way solenoid valve 35 and second two-position two-way solenoid valve 36, escape pipe interface 6 connects the gas circuit of giving vent to anger, first escape pipe interface 6 is connected to voltage stabilizing gas tank 40, after give vent to anger tensimeter 3 and pressure transducer 41, be divided into two-way again, the 3rd, one tunnel two-position two-way solenoid valve 37 and flow proportion valve 42 are connected to digital flowmeter 43, and another road is connected to orifice plate 44 through the 4th two-position two-way solenoid valve 38.
As shown in Figure 8, method of testing of the present utility model: the degree of superheat of first testing heating power expansion valve 27 is done dynamic pressure, heating power expansion valve 27 is installed on fixture 24, now in the calibration cell of the temperature-sensitive package location of heating power expansion valve 27 in can immersion equipment, carry out precooling, general pre-cold ambient temperature is 0 degree Celsius, connect again draft tube interface 5 and escape pipe interface 6 to fixture 24, from the second filtration under diminished pressure valve 32, pass into the low voltage experiment gas lower than 1.0MPa, open second two-position two-way solenoid valve 36 and the 4th two-position two-way solenoid valve 38, test gas is discharged from orifice plate 44, after outlet stable gas pressure, pressure transducer 41 reads out mouth pressure value and does dynamic pressure as the degree of superheat, carry out again flow rate test checking, close second two-position two-way solenoid valve 36 and the 4th two-position two-way solenoid valve 38, open first two-position two-way solenoid valve 35 and the 3rd two-position two-way solenoid valve 37, the first filtration under diminished pressure valve 31 passes into the Hi-pot test gas that is greater than 1.0MPa, adjust flux proportioning valve 42 is made dynamic pressure value until top hole pressure value reaches the degree of superheat recording above, digital flowmeter 43 reading flow values after top hole pressure is stable, flow value meet test request verify qualified, test finishes, bright qualified pilot lamp 11, do not meet the demands and continue to regulate the degree of superheat to do dynamic pressure, repetitive cycling test is until flow value is qualified, if the test duration is overtime, judge test failure, finish test, bright defective pilot lamp 12.
Claims (3)
1. a heating power expansion valve flow testing device, it is characterized in that: this device front end is worktable (15), test fixture (14) is installed on the table top centre position of worktable (15), there is chamber controller (13) on test fixture (14) right side, draft tube interface (5) and escape pipe interface (6), there is power switch (4) in worktable (15) left side, directly over worktable (15), there is display screen (10), display screen (10) downside has qualified pilot lamp (11) and defective pilot lamp (12), there is boost gauge (2) in display screen (10) left side, display screen (10) the right side tensimeter (3) of giving vent to anger, worktable (15) downside is equipped with start key (8) and rapid stop key (9) by the interior interposition of keyway (7), there is gas source interface (1) below, equipment left side.
2. a kind of heating power expansion valve flow testing device according to claim 1, it is characterized in that: described test fixture (14) is fixed on worktable (15) by frock base plate (21), frock base plate (21) is provided with cylinder (25) near display screen (10) one sides, cylinder (25) upper end connects motor (22) by motor fixing plate (26), adjusting tool (23) is installed in motor (22) below, frock base plate (21) is away from display screen (10) one side sectional fixtures (24), heating power expansion valve (27) is clipped in fixture (24), the temperature-sensitive bag of heating power expansion valve (27) stretches out outside frock base plate (21), and immerse in calibration cell.
3. a kind of heating power expansion valve flow testing device according to claim 1, it is characterized in that: described draft tube interface (5) and escape pipe interface (6) are connected to respectively different inner air paths, be that draft tube interface (5) connects air inlet gas circuit, air inlet gas circuit is divided into two-way air inlet, one tunnel Hi-pot test gas enters high pressure gas holder (33) through the first filtration under diminished pressure valve (31), by first two-position two-way solenoid valve (35), arrive draft tube interface (5) again, boost gauge (2) is installed in the connection gas circuit of first two-position two-way solenoid valve (35) and draft tube interface (5), another road low voltage experiment gas enters lower pressure tanks (34) through the second filtration under diminished pressure valve (32), by second two-position two-way solenoid valve (36) and retaining valve (39), arrive draft tube interface (5) again, retaining valve (39) is arranged in the connection gas circuit of first two-position two-way solenoid valve (35) and second two-position two-way solenoid valve (36), escape pipe interface (6) connects the gas circuit of giving vent to anger, escape pipe interface (6) is first connected to voltage stabilizing gas tank (40), after the tensimeter of giving vent to anger (3) and pressure transducer (41), be divided into two-way, the 3rd two-position two-way solenoid valve in one tunnel (37) and flow proportion valve (42) are connected to digital flowmeter (43), and another road is connected to orifice plate (44) through the 4th two-position two-way solenoid valve (38).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492548.3U CN203443772U (en) | 2013-08-13 | 2013-08-13 | Thermal expansion valve flow testing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320492548.3U CN203443772U (en) | 2013-08-13 | 2013-08-13 | Thermal expansion valve flow testing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203443772U true CN203443772U (en) | 2014-02-19 |
Family
ID=50094810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320492548.3U Expired - Fee Related CN203443772U (en) | 2013-08-13 | 2013-08-13 | Thermal expansion valve flow testing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203443772U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411766A (en) * | 2013-08-13 | 2013-11-27 | 中国计量学院 | Thermostatic expansion valve flow measurement device and measurement method |
| CN109187000A (en) * | 2018-09-13 | 2019-01-11 | 格力电器（武汉）有限公司 | Electric expansion valve maximum actuation pressure difference test device |
-
2013
- 2013-08-13 CN CN201320492548.3U patent/CN203443772U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103411766A (en) * | 2013-08-13 | 2013-11-27 | 中国计量学院 | Thermostatic expansion valve flow measurement device and measurement method |
| CN103411766B (en) * | 2013-08-13 | 2015-09-23 | 中国计量学院 | Heating power expansion valve flow testing device and method of testing |
| CN109187000A (en) * | 2018-09-13 | 2019-01-11 | 格力电器（武汉）有限公司 | Electric expansion valve maximum actuation pressure difference test device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103411766B (en) | Heating power expansion valve flow testing device and method of testing | |
| CN201637578U (en) | Cooling system of engine test bench | |
| CN105841899B (en) | The static degree of superheat automatic testing equipment of F valves and test method | |
| CN102661859A (en) | Performance testing equipment of pressure regulator of bottled liquefied petroleum gas and application method thereof | |
| CN203443772U (en) | Thermal expansion valve flow testing apparatus | |
| CN104713801A (en) | Experiment device and method for gas adsorption and desorption of large rock samples with different sizes | |
| CN102854098B (en) | Nozzle granularity laser test apparatus | |
| CN106153161B (en) | Instrument detection device | |
| CN112945534A (en) | Gas turbine component air flow test bed and test method | |
| CN105841940A (en) | Thermal expansion valve time constant testing device and testing method | |
| CN203869854U (en) | Thermal expansion valve integrated testing apparatus | |
| CN107702864A (en) | Engine thermostat lower house air-tightness detection tool | |
| CN102174984B (en) | Capillary tube thermostatic expansion valve mixing and filling device based on PLC (programmable logic controller) | |
| CN202522297U (en) | Performance test equipment for bottled liquefied petroleum gas pressure regulator | |
| CN110726547A (en) | Portable comprehensive checking device for pressure protection device | |
| CN102589912B (en) | System and method for repairing and inspecting airplane heat exchanger | |
| CN209858153U (en) | Airtight detection hydraulic machine for single bipolar plate | |
| CN210834209U (en) | Test tool for calibrating heat management of water-cooled battery | |
| CN202216815U (en) | Device for detecting leakage of power battery | |
| CN210894621U (en) | New forms of energy motor's test system | |
| CN107727166B (en) | A kind of automobile power cell packet internal cooling system fluid flow test method | |
| CN203365088U (en) | Non-condensable gas measuring device of condenser | |
| CN202442760U (en) | Water meter calibration device | |
| CN108415399B (en) | Water cooling system for testing motor controller | |
| CN112484822A (en) | Loop flow calibrating device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20160813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |