CN101464225A - Dynamic pressure test device with thermal power expansion valve - Google Patents
Dynamic pressure test device with thermal power expansion valve Download PDFInfo
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- CN101464225A CN101464225A CNA200910095417XA CN200910095417A CN101464225A CN 101464225 A CN101464225 A CN 101464225A CN A200910095417X A CNA200910095417X A CN A200910095417XA CN 200910095417 A CN200910095417 A CN 200910095417A CN 101464225 A CN101464225 A CN 101464225A
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Abstract
The invention discloses a device for testing the dynamic pressure of a thermal expansion valve. The device mainly comprises an automatic clamping unit, a thermostatic control unit, a gas circuit detection unit and an embedded control unit; by adopting a pneumatic element, the automatic clamping unit realizes the automatic clamping of tooling; the thermostatic control unit ensures the correctness and the stability of the temperature in a testing environment; by adopting a digital pressure sensor, the gas circuit detection unit improves the accuracy and the real-time property of measurement; and the embedded control unit ensures that each unit works in accordance with the testing standard through coordination and control, processes the testing data and judges the testing results. Compared with the traditional testing device, the device provided by the invention has the advantages of high degree of automation, high measuring accuracy, strong real-time property, high testing speed, high reliability and the like, and is very suitable to be applied to the processes of automatic production and testing of products.
Description
Technical field
The present invention relates to a kind of dynamic pressure test device with thermal power expansion valve, especially relate to a kind of dynamic pressure test device with thermal power expansion valve.
Background technology
Heating power expansion valve is one of critical component in the refrigeration system.It is widely used in automotive air-conditioning system, the central air conditioner system, and demand is very big, also is one of principal articles of export of China simultaneously.The effect of heating power expansion valve in refrigeration system is very crucial, can be described as the core brain of whole refrigeration system, and the performance direct relation of heating power expansion valve the quality of refrigeration system.Therefore enterprise is in production and product export test, and the act pressure test of heating power expansion valve seems extremely important.The existing dynamic pressure test device with thermal power expansion valve of domestic enterprise also generally rests on early stage level, and be embodied in: 1. automaticity is low, and whole testing process all needs operator's step-by-step operation to finish; 2. the mechanical compression sensor is all adopted in pressure test mostly, and the operator takes to carve and observes the mechanical pressure meter reading in testing process, and is very arduous, and the personal error influence is very big; 3. expansion valve act pressure proving installation all needs to operator of each station configuration mostly, the labor cost height, and production efficiency is low, is not suitable for large-scale production; 4. the test environment temperature control precision is low, and such as when doing 0 ℃ of act pressure test, the enterprise that has just replaces the zero degree environment with mixture of ice and water, causes test result inaccurate; 5. the test process operator is by valve body action in the knob controlling gas circuit, and the test duration error is very big; 6. proving installation function singleness can not be used for doing MOP test etc. such as the device that is used to do 0 ℃ of act pressure test of heating power expansion valve.
Summary of the invention
The object of the present invention is to provide a kind of dynamic pressure test device with thermal power expansion valve, can easily realize the loading and unloading of product to be tested by the automated exchanged cutter unit, provide the precise dose test environment by temperature control unit for product test, adopt the real-time acquisition process high accuracy number of controller pressure sensor signal to improve the precision and the real-time of test pressure, avoided the influence of artificial reading error, the utilization embedded control system has improved the automatization level of test process, and test result judgement automatically greatly reduces artificial factor.
The technical solution adopted for the present invention to solve the technical problems is:
Comprise automated exchanged cutter unit, temperature control unit, detection gas circuit unit and embedded control unit; Wherein:
1) automated exchanged cutter unit: comprise base plate, positioning seat, first cylinder, second cylinder, intake interface, the interface of giving vent to anger, O type circle and packing washer; Wherein positioning seat, first cylinder and second cylinder are installed on the base plate; Tested heating power expansion valve is installed on the positioning seat; First cylinder is vertical mutually with second cylinder; Intake interface is installed on second cylinder; The interface of giving vent to anger is installed on first cylinder; O type snare is on intake interface; Packing washer is embedded in the interface of giving vent to anger; The interface of giving vent to anger on first cylinder is aimed at tested thermal expansion valve air gate, and the intake interface on second cylinder is aimed at tested heating power expansion valve air intake opening;
2) temperature control unit: comprise stirrer, level sensor, grid baffle plate and calibration cell; Wherein stirrer, level sensor and grid baffle plate are installed on the calibration cell; The bulb of tested heating power expansion valve and stirrer are immersed in the liquid of calibration cell;
3) detect the gas circuit unit: comprise air inlet solenoid valve, exhaust solenoid valve, make moving electromagnetic valve, gas-holder, orifice plate, reduction valve, filtrator and digital pressure sensor; Wherein reduction valve, filtrator, gas-holder, air inlet solenoid valve link to each other successively by copper pipe; Gas circuit is divided into two-way behind the air inlet solenoid valve, the one tunnel connects the intake interface on second cylinder, and the pneumoelectric magnet valve runs on another road; The interface of giving vent to anger on first cylinder, make moving electromagnetic valve and link to each other successively by copper pipe with orifice plate; Digital pressure sensor passes the interface and doing between the moving electromagnetic valve of giving vent to anger be serially connected on first cylinder; Tested heating power expansion valve inserts by the interface of giving vent to anger on the intake interface on second cylinder and first cylinder and detects in the gas circuit unit;
4) embedded control unit: comprise I/O control module, A/D sampling module, microprocessor and display; Wherein detect air inlet solenoid valve, the exhaust solenoid valve of gas circuit unit, first cylinder of making moving electromagnetic valve and automated exchanged cutter unit, second cylinder access I/O control module; Digital pressure sensor inserts the MD sampling module; Microprocessor control I/O control module, A/D sampling module and display work.
Described dynamic pressure test device with thermal power expansion valve can be installed in 1～6 station on the same equipment separate work.
The present invention compares with background technology, and the beneficial effect that has is:
1. the automaticity height has been saved cost of human resources greatly, has improved testing efficiency;
2. adopt embedded Control technology and liquid crystal display to control the execution of test process, the processing of test data and the demonstration of real-time testing information, improved test speed, reduced artificial factor;
3. adopted the thermostatic control technology,, improved reliability of testing result greatly for product test provides temperature test environment accurately.
4. realize the simultaneously separate work of multistation, improved resource utilization and production test efficient greatly.
Description of drawings
Fig. 1 is an overall schematic of the present invention;
Fig. 2 is automated exchanged cutter cellular construction figure of the present invention;
Fig. 3 is a temperature control unit synoptic diagram of the present invention;
Fig. 4 is that the present invention detects the gas circuit cell schematics;
Fig. 5 is an embedded control unit synoptic diagram of the present invention.
Among the figure: 1, the automated exchanged cutter unit, 2 temperature control units, 3, detect the gas circuit unit, 4, embedded control unit, 5, tested electric expansion valve, 11, base plate, 12, positioning seat, 13, first cylinder, 14, second cylinder, 15, intake interface, 16, the interface of giving vent to anger, 17,0 type circle, 18, packing washer, 21, stirrer, 22, level sensor, 23, the grid baffle plate, 24, calibration cell, 31, the air inlet solenoid valve, 32, exhaust solenoid valve, 33, make moving electromagnetic valve, 34, gas-holder, 35, orifice plate, 36, reduction valve, 37, filtrator, 38, digital pressure sensor.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples.
As shown in Figure 1, comprise automated exchanged cutter unit 1, temperature control unit 2, detection gas circuit unit 3 and embedded control unit 4; Wherein, tested heating power expansion valve 5 is installed on the proving installation by automated exchanged cutter unit 1, and its bulb is inserted in the calibration cell of temperature control unit 2; Automated exchanged cutter unit 1 is placed in tested heating power expansion valve 5 on the positioning seat by cylinder clamping; Calibration cell control test environment temperature; Embedded control unit 4 is coordinated other each unit and is finished the properties of product test, and handles test data and show test results.
As described in Fig. 1, Fig. 2, automated exchanged cutter unit 1 comprises base plate 11, positioning seat 12, first cylinder 13, second cylinder 14, intake interface 15, the interface 16 of giving vent to anger, O type circle 17 and packing washer 18; Wherein positioning seat 12, first cylinder 13 and second cylinder 14 are installed on the base plate 11; Tested heating power expansion valve 5 is installed on the positioning seat 12; First cylinder 13 is vertical mutually with second cylinder 14; Intake interface 15 is installed on second cylinder 14; The interface 16 of giving vent to anger is installed on first cylinder 13; O type circle 17 is enclosed within on the intake interface 15; Packing washer 18 is embedded in the interface 16 of giving vent to anger; The interface 16 of giving vent to anger on first cylinder 13 is aimed at tested heating power expansion valve 5 gas outlets, and the intake interface 15 on second cylinder 14 is aimed at tested heating power expansion valve 5 air intake openings; Intake interface 15 stretches into the air intake opening of tested heating power expansion valve 5 under the promotion of second cylinder 14, and realizes sealing by contacting of O type circle 17 on the intake interface 15 and tested heating power expansion valve 5 air intake opening inwalls; The interface 16 of giving vent to anger packs into the interface of giving vent to anger of tested heating power expansion valve 5 under the promotion of first cylinder 13, and contact by the end face of the packing washer 18 on the interface 16 of giving vent to anger with tested heating power expansion valve 5 gas outlets, under the effect of first cylinder, 13 pressures, realize sealing; Positioning seat has played first cylinder 13 can be intake interface 15 and interface 16 and the tested heating power expansion valve 5 correct effects that are connected of giving vent to anger in the process of holding out against with second cylinder 14.
As Fig. 1, shown in Figure 3, temperature control unit 2: comprise stirrer 21, level sensor 22, grid baffle plate 23 and calibration cell 24; Wherein stirrer 21, level sensor 22 and grid baffle plate 23 are installed on the calibration cell 24; The bulb of tested heating power expansion valve 5 and stirrer 21 are immersed in the liquid of calibration cell 24; Wherein, calibration cell 24 has controller and can realize the temperature setting, freeze, heat operation; Can be by communication interface with the embedded control unit communication, communication interface is the RS232 interface; The calibration cell temperature regulating range is-15～50 ℃, error+/-0.1 ℃; Stirrer 21 rotates when calibration cell 24 work, drives that water flow in the calibration cell 24, makes each liquid level place temperature unanimity in the calibration cell 24; Level sensor 22 is used to detect the height of water level in the calibration cell 24, prevents that liquid level influences the act pressure test inadequately in the calibration cell 24; Grid baffle plate 23 is contained in certain position under the liquid level, prevents from that tested heating power expansion valve 5 from falling into to accidentally injure tested heating power expansion valve 5 and calibration cells 24 in the calibration cell 24.
As shown in Figure 4, detect that gas circuit unit 3 comprises air inlet solenoid valve 31, exhaust solenoid valve 32, makes moving electromagnetic valve 33, gas-holder 34, orifice plate 35, reduction valve 36, filtrator 37 and digital pressure sensor 38; Wherein reduction valve 36, filtrator 37, gas-holder 34, air inlet solenoid valve 31 link to each other successively by copper pipe; Gas circuit is divided into two-way behind air inlet solenoid valve 31, the one tunnel connects the intake interface 15 on second cylinder 14, and pneumoelectric magnet valve 32 runs on another road; 13 the interface 16 of giving vent to anger on first cylinder, make moving electromagnetic valve 33 and orifice plate 35 and link to each other successively by copper pipe; Digital pressure sensor 38 passes and is serially connected on first cylinder 13 the interface 16 and doing between the moving electromagnetic valve 33 of giving vent to anger; Tested heating power expansion valve inserts by 13 the interface 16 of giving vent to anger on 14 the intake interface 15 on second cylinder and first cylinder and detects in the gas circuit unit; Detect in the gas circuit and adopt solenoid valve, realized detecting the automatic control of gas circuit; Adopt digital pressure sensor to improve the real-time and the precision of act pressure test.
As shown in Figure 5, embedded control unit 4 comprises I/O control module, A/D sampling module, microprocessor and display; Wherein detect air inlet solenoid valve 31, the exhaust solenoid valve 32 of gas circuit unit, first cylinder 13 of making moving electromagnetic valve 33 and automated exchanged cutter unit, second cylinder 14 and insert the I/O control modules; Digital pressure sensor 38 inserts the A/D sampling module; Microprocessor control I/O control module, A/D sampling module and display work; Microprocessor is 32 ARM7, and display is 5.6 cun 256 dichroic liquid crystal display screen, and processing and the real-time information of satisfying test process control requirement, test data show; Embedded control unit is by the work of the input of I/O control module control button, pilot lamp demonstration as a result and each solenoid valve of detection gas circuit unit; Gather the numerical value that pressure transducer is read fast and accurately by the A/D sampling module; Embedded control unit is by the running parameter of RS232 communication interface control temperature control unit.
Described dynamic pressure test device with thermal power expansion valve can be installed in 1～6 station on the same equipment separate work.
Embodiment:
Tested heating power expansion valve 5 is installed on the positioning seat 12, start first cylinder 13 and second cylinder 14, intake interface 15, give vent to anger interface 16 and tested heating power expansion valve 5 are linked together, the bulb of tested heating power expansion valve 5 is inserted in the calibration cell under the liquid level, and microprocessor starts test procedure after the installation automatically:
1. the bulb precooling of tested heating power expansion valve 5 is during precooling was delayed time 10 to 15 seconds;
2. act pressure prediction, opening air inlet solenoid valve 31 makes test gas feed the air intake opening of tested heating power expansion valve 5, make moving electromagnetic valve 33 break-makes once every control in 1 second, test tested heating power expansion valve 5 gas outlet pressure simultaneously, the test act pressure is gathered, handled to microprocessor in real time, obtains the forecast pressure value after the start 3 times;
3. pressure is regulated, and opens air inlet solenoid valve 31 and makes moving electromagnetic valve 33, and the test act pressure is gathered, handled to microprocessor in real time, and the user regulates tested heating power expansion valve 5 according to technical requirement, and act pressure is arrived in user's specialized range;
4. act pressure test, opening air inlet solenoid valve 31 makes test gas feed the air intake opening of tested heating power expansion valve 5, make moving electromagnetic valve 33 break-makes once every control in 1 second, test tested heating power expansion valve 5 gas outlet pressure simultaneously, the test act pressure is gathered, handled to microprocessor in real time, obtains the forecast pressure value after the start 3 times;
5. the result judges, microprocessor is judged the test result of tested heating power expansion valve 5 according to the act pressure test result.In the whole test process, display shows contents such as duty, pressure test information, current test result, total number measured, defective sum, the prompting test process of each solenoid valve in real time.
Claims (2)
1, a kind of dynamic pressure test device with thermal power expansion valve is characterized in that: comprise automated exchanged cutter unit (1), temperature control unit (2), detect gas circuit unit (3) and embedded control unit (4); Wherein:
1) automated exchanged cutter unit (1): comprise base plate (11), positioning seat (12), first cylinder (13), second cylinder (14), intake interface (15), the interface of giving vent to anger (16), O type circle (17) and packing washer (18); Wherein positioning seat (12), first cylinder (13) and second cylinder (14) are installed on the base plate (11); Tested heating power expansion valve is installed on the positioning seat (12); First cylinder (13) is vertical mutually with second cylinder (14); Intake interface (15) is installed on second cylinder (14); The interface (16) of giving vent to anger is installed on first cylinder (13); O type circle (17) is enclosed within on the intake interface (15); Packing washer (18) is embedded in the interface of giving vent to anger (16); The interface of giving vent to anger (16) on first cylinder (13) is aimed at tested heating power expansion valve (5) gas outlet, and the intake interface (15) on second cylinder (14) is aimed at tested heating power expansion valve (5) air intake opening;
2) temperature control unit (2): comprise stirrer (21), level sensor (22), grid baffle plate (23) and calibration cell (24); Wherein stirrer (21), level sensor (22) and grid baffle plate (23) are installed on the calibration cell (24); The bulb of tested heating power expansion valve (5) and stirrer (21) are immersed in the liquid of calibration cell (24);
3) detect gas circuit unit (3): comprise air inlet solenoid valve (31), exhaust solenoid valve (32), make moving electromagnetic valve (33), gas-holder (34), orifice plate (35), reduction valve (36), filtrator (37) and digital pressure sensor (38); Wherein reduction valve (36), filtrator (37), gas-holder (34), air inlet solenoid valve (31) link to each other successively by copper pipe; Gas circuit is divided into two-way behind air inlet solenoid valve (31), the one tunnel connects the intake interface (15) on second cylinder (14), and pneumoelectric magnet valve (32) runs on another road; The interface of giving vent to anger (16) of (13) on first cylinder, make moving electromagnetic valve (33) and link to each other successively by copper pipe with orifice plate (35); Digital pressure sensor (38) biography is serially connected in the interface of giving vent to anger (16) of (13) on first cylinder and does between the moving electromagnetic valve (33); Tested heating power expansion valve by (14) on second cylinder intake interface (15) and first cylinder on the interface of giving vent to anger (16) of (13) insert and detect in the gas circuit unit;
4) embedded control unit (4): comprise I/O control module, A/D sampling module, microprocessor and display; Wherein detect air inlet solenoid valve (31), the exhaust solenoid valve (32) of gas circuit unit, first cylinder (13) of making moving electromagnetic valve (33) and automated exchanged cutter unit, second cylinder (14) access I/O control module; Digital pressure sensor (38) inserts the A/D sampling module; Microprocessor control I/O control module, A/D sampling module and display work.
2. dynamic pressure test device with thermal power expansion valve according to claim 1 is characterized in that: described dynamic pressure test device with thermal power expansion valve can be installed in 1～6 station on the same equipment separate work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910095417XA CN101464225B (en) | 2009-01-12 | 2009-01-12 | Dynamic pressure test device with thermal power expansion valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910095417XA CN101464225B (en) | 2009-01-12 | 2009-01-12 | Dynamic pressure test device with thermal power expansion valve |
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| CN101464225A true CN101464225A (en) | 2009-06-24 |
| CN101464225B CN101464225B (en) | 2010-08-25 |
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| CN200910095417XA Expired - Fee Related CN101464225B (en) | 2009-01-12 | 2009-01-12 | Dynamic pressure test device with thermal power expansion valve |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103033350A (en) * | 2012-11-27 | 2013-04-10 | 中国市政工程华北设计研究总院 | Accelerated failure experimental method for gas pressure regulator and experimental device thereof |
| CN103116091A (en) * | 2013-01-21 | 2013-05-22 | 浙江新劲空调设备有限公司 | Detection equipment for characteristic of electric control valve |
| CN103411766A (en) * | 2013-08-13 | 2013-11-27 | 中国计量学院 | Thermostatic expansion valve flow measurement device and measurement method |
| CN103913307A (en) * | 2014-04-22 | 2014-07-09 | 中国计量学院 | Tester capable of conducting movable dynamic pressure detection on air conditioning throttle valve under normal temperature operation |
| CN104180569A (en) * | 2014-09-01 | 2014-12-03 | 中国计量学院 | Automatic adjustment table of static superheat degree of air conditioning throttle valve |
| CN105841899A (en) * | 2016-03-29 | 2016-08-10 | 中国计量学院 | F valve stationary superheat degree automatic testing device and testing method |
| CN110174258A (en) * | 2019-06-10 | 2019-08-27 | 中国计量大学 | The static degree of superheat of heating power expansion valve adjusts test equipment |
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| CN2645044Y (en) * | 2003-06-15 | 2004-09-29 | 浙江三花股份有限公司 | Electronic expansion valve flow detection system |
| CN201344850Y (en) * | 2009-01-12 | 2009-11-11 | 中国计量学院 | Device for testing dynamic pressure of thermostatic expansion valve |
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- 2009-01-12 CN CN200910095417XA patent/CN101464225B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103033350B (en) * | 2012-11-27 | 2015-06-24 | 中国市政工程华北设计研究总院 | Accelerated failure experimental method for gas pressure regulator and experimental device thereof |
| CN103033350A (en) * | 2012-11-27 | 2013-04-10 | 中国市政工程华北设计研究总院 | Accelerated failure experimental method for gas pressure regulator and experimental device thereof |
| CN103116091A (en) * | 2013-01-21 | 2013-05-22 | 浙江新劲空调设备有限公司 | Detection equipment for characteristic of electric control valve |
| CN103116091B (en) * | 2013-01-21 | 2014-11-26 | 浙江新劲空调设备有限公司 | Detection equipment for characteristic of electric control valve |
| 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 |
| CN103913307A (en) * | 2014-04-22 | 2014-07-09 | 中国计量学院 | Tester capable of conducting movable dynamic pressure detection on air conditioning throttle valve under normal temperature operation |
| CN104180569A (en) * | 2014-09-01 | 2014-12-03 | 中国计量学院 | Automatic adjustment table of static superheat degree of air conditioning throttle valve |
| CN105841899A (en) * | 2016-03-29 | 2016-08-10 | 中国计量学院 | F valve stationary superheat degree automatic testing device and testing method |
| CN105841899B (en) * | 2016-03-29 | 2018-04-20 | 中国计量学院 | The static degree of superheat automatic testing equipment of F valves and test method |
| CN110308003A (en) * | 2019-03-29 | 2019-10-08 | 武汉格罗夫氢能汽车有限公司 | A kind of air-conditioning system refrigeration cycle Bench test methods |
| CN110174258A (en) * | 2019-06-10 | 2019-08-27 | 中国计量大学 | The static degree of superheat of heating power expansion valve adjusts test equipment |
| CN110174258B (en) * | 2019-06-10 | 2023-10-20 | 中国计量大学 | Static superheat degree adjustment test equipment of thermal expansion valve |
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