CN210513555U - Refrigerant simulation leakage test device - Google Patents
Refrigerant simulation leakage test device Download PDFInfo
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- CN210513555U CN210513555U CN201921645641.7U CN201921645641U CN210513555U CN 210513555 U CN210513555 U CN 210513555U CN 201921645641 U CN201921645641 U CN 201921645641U CN 210513555 U CN210513555 U CN 210513555U
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Abstract
The utility model discloses a refrigerant simulation leakage test device, which comprises a drying oven and a refrigerant tank arranged in the drying oven, wherein an air valve is arranged at the outlet of the refrigerant tank, a refrigerant speed control valve is arranged outside the drying oven, and the air valve is connected with the refrigerant speed control valve through a capillary tube; an electronic scale is arranged on the outer side of the top of the oven, and the refrigerant tank is arranged on a weighing part of the electronic scale through a suspension device; a capillary tube for guiding the refrigerant to the detection point is connected to the outlet side of the refrigerant rate control valve. The device simple structure, through oven, electronic scale, refrigerant rate control valve realize that temperature, quality, the simulation leakage rate of refrigerant are controllable adjustable, whole test process is safe, and its testing result is accurate.
Description
Technical Field
The utility model relates to an electrical apparatus safety inspection device specifically is a refrigerant simulation leak test device
Background
Under the influence of production process, cost, environmental protection and other factors, most of refrigeration equipment such as refrigerators, air conditioners, heat pumps and the like at present adopt combustible refrigerants such as R50, R290, R600a and the like. Leakage of these flammable refrigerants may lead to explosion or fire hazards, presenting a serious safety hazard. Thus, standards such as GB 4706.13, IEC 60335-2-24, GB 4706.32, IEC60335-2-40 all place specific and stringent test and test requirements on simulated refrigerant leaks in refrigeration units. However, different refrigeration equipment has different structures, different types of flammable refrigerants, different filling amounts of flammable refrigerants and different working temperatures, so that the leakage amount of flammable refrigerants, the temperature of refrigerants and the leakage rate of refrigerants required in tests are different. In order to meet the standard requirements, the leakage amount, temperature and leakage rate of the refrigerant need to be accurately and conveniently controlled and adjusted when a refrigerant leakage test is simulated.
At present, a laboratory carries out a refrigerant leakage simulation test by placing a flammable refrigerant tank into a constant-temperature water tank and then guiding refrigerant to a leakage port outside an air valve of the refrigerant tank through a capillary tube. The amount of the leaked refrigerant is controlled and simulated through the electronic scale, the temperature of the leaked refrigerant is controlled through the constant-temperature water tank, but the pressure in the gas tank is constantly changed in the test process because the refrigerant is constantly converted from a liquid state to a gas state in the gas tank, so that the simulation leakage rate of the refrigerant is difficult to control, and accurate test data cannot be obtained. In addition, when the leakage rate of the simulated leakage combustible refrigerant is not well controlled, explosion and fire are possible, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model provides a can conveniently realize refrigerant simulation leak test device of refrigerant leak test parameter control to improve and examine the refrigerant leak test result accuracy, and the security of testing process.
The refrigerant simulation leakage test device comprises a drying oven and a refrigerant tank arranged in the drying oven, wherein an air valve is arranged at the outlet of the refrigerant tank, a refrigerant speed control valve is arranged outside the drying oven, and the air valve is connected with the refrigerant speed control valve through a capillary tube; an electronic scale is arranged on the outer side of the top of the oven, and the refrigerant tank is arranged on a weighing part of the electronic scale through a suspension device; a capillary tube for guiding the refrigerant to the detection point is connected to the outlet side of the refrigerant rate control valve.
The refrigerant simulation leakage test device can accurately control the heating temperature through the oven, further control the temperature of the refrigerant tank, and conveniently realize accurate control at different temperatures. Through hanging device, even make the electronic scale can arrange the oven outside in and also can realize leaking the monitoring of leakage quantity to the refrigerant, avoided again because of the influence of the high temperature in the oven to the precision of weighing of electronic scale, for arranging the electronic scale in the oven, it has still prolonged the life of electronic scale. In addition, the refrigerant rate control valve arranged outside the oven can well control the discharge rate of the refrigerant. The device has a simple structure, realizes that the temperature of the refrigerant is controllable and adjustable, the leakage amount is controllable, the simulated leakage rate is controllable, the standard requirements of the refrigerant simulated leakage test of various different devices can be well met, the whole test is simple and convenient to operate, the process is safe, and the detection result is accurate.
And a gas storage tank can be arranged between the refrigerant tank and the refrigerant rate control valve, the gas valve is communicated with the gas storage tank through a capillary tube, and the gas storage tank is communicated with the refrigerant rate control valve through a pipeline.
The gas holder can store the refrigerant of refrigerant jar interior refrigerant by liquid phase transition gaseous state refrigerant, prevents that the refrigerant from being in the continuous transition process of liquid to gaseous state, and the continuous change of pressure in the refrigerant jar provides the buffering through the gas holder to can control the rate that the refrigerant leaked more accurately.
Drawings
Fig. 1 is a structural view of a refrigerant leak simulation test apparatus.
Fig. 2 is a block diagram of another refrigerant leak simulation test apparatus.
Fig. 3 is a structural view of still another refrigerant leakage simulation test apparatus.
Detailed Description
As shown in fig. 1, a refrigerant leakage simulation test device comprises an oven 1, a refrigerant tank 3 arranged in the oven 1, an air valve 5 arranged at the outlet of the refrigerant tank 3, a refrigerant rate control valve 8 arranged at the outer side of the oven 1, and the air valve 5 connected with the refrigerant rate control valve 8 through a capillary tube 6; an electronic scale 2 is arranged on the outer side of the top of the oven 1, and a refrigerant tank 3 is arranged on a weighing part of the electronic scale 2 through a suspension device 4; on the outlet side of the refrigerant rate control valve 8, a capillary tube 6 for guiding the refrigerant to a detection point is connected.
An air storage tank 7 can be further arranged between the refrigerant tank 3 and the refrigerant rate control valve 8, the air valve 5 is communicated with the air storage tank 7 through a capillary tube 6, and the air storage tank 7 is communicated with the refrigerant rate control valve 8 through a pipeline. The gas holder can store the refrigerant of refrigerant jar interior refrigerant by liquid phase transition gaseous state refrigerant, prevents that the refrigerant from being in the continuous transition process of liquid to gaseous state, and the continuous change of pressure in the refrigerant jar provides the buffering through the gas holder to can control the rate that the refrigerant leaked more accurately.
The refrigerant rate control valve can be a precise pressure regulating valve, the flow of a medium is regulated by controlling the opening degree of an opening and closing piece in a valve body, the pressure of the medium is reduced, meanwhile, the opening degree of the opening and closing piece is regulated under the action of the pressure behind the valve, the pressure behind the valve is kept in a certain range, the outlet pressure is kept in a set range under the condition that the inlet pressure is continuously changed, and then the gas rate passing through the outlet of the valve is controlled.
The device is closing refrigerant rate control valve, when opening the pneumatic valve, the refrigerant jar is in the in-process that the gaseous state is changed into from liquid state after the oven heating, the pressure in the refrigerant jar also can be constantly increasing, the gas holder that communicates with the refrigerant jar through the capillary can store the refrigerant that becomes the gaseous state, reduce the pressure in the refrigerant jar, then open and adjust refrigerant rate control valve to the specified value, place the capillary of refrigerant rate control valve one end at the simulation leakage point of test sample 9, the experiment is continuously carried out until refrigerant leakage reaches the specified value, close refrigerant rate control valve, measure the flammable refrigerant concentration near the test sample with refrigerant concentration tester, the concentration should not exceed 75% of refrigerant low-limit explosion value. The refrigerant simulation leakage test device can accurately control the heating temperature through the oven, further control the temperature of the refrigerant tank, and realize accurate control under a plurality of specified temperature values. Through hanging device, make the electronic scale arrange the oven outside in and also can monitor the refrigerant volume, it has still avoided because of the influence of the high temperature in the oven to the precision of weighing of electronic scale, for arranging the electronic scale in the oven, it has still prolonged the life of electronic scale. In addition, the refrigerant rate control valve arranged outside the oven can well control the discharge rate of the refrigerant. The device has a simple structure, realizes the controllability and the adjustability of the temperature of the refrigerant, the controllability of the leakage quality and the controllability of the simulated leakage rate, well meets the standard requirements of the simulated leakage test of the refrigerant, the whole test process is safe, and the detection result is accurate.
In the refrigerant leakage simulation test device, the suspension device 4 comprises a hanging rod 41 arranged on a weighing part of the electronic scale and lifting ropes 42 at two ends of the hanging rod, balance arms 43 extending outwards are arranged at two sides of the refrigerant tank 3, the lifting ropes 42 at two ends of the hanging rod 41 penetrate through the wall surface of the oven 1, and the bottoms of the lifting ropes are respectively tied on the two balance arms 43. On the part of weighing of electronic scale was arranged in to hanging device's peg, refrigerant jar was suspended in midair through the lifting rope in both ends, and it can accurate measurement refrigerant jar weight to can realize the accurate measurement to refrigerant jar leakage quantity, its balance arm can improve refrigerant jar's equilibrium, prevents that refrigerant jar from taking place to rock.
As shown in fig. 2, the electronic scale 2 is a pull-type sensing scale, the suspension device 4 includes two opposite clasps 44 extending downward from the pull-type sensing scale, and the clasps 44 can hold the refrigerant tank 3 from two sides. Or the suspension device is only a pull type sensing scale and is a hook extending downwards, and the refrigerant tank is hooked on the hook. Or the suspension device is only a lifting rope below the tension type sensing scale, and the refrigerant tank is tied by the lifting rope. The air tightness inside the oven is reduced due to the fact that the lifting rope penetrates through the oven, the temperature difference between hot air inside the oven and air outside the oven is formed through the lifting rope channel to form air convection, heat loss is caused, the uniformity of the temperature in the incubator can be influenced, the accurate control of the temperature is influenced, and the test precision is influenced.
The bottom of the tension type sensing scale is provided with a vertical surrounding edge with the contact part of the top of the oven, a closed space is formed at the edge of the bottom of the sensing scale, a channel for the surrounding ring or a lifting rope to pass through is arranged in the vertical surrounding edge at the top of the oven, air convection inside and outside the channel is avoided, heat loss is prevented, uneven temperature caused by convection is avoided, and the test precision is further improved.
As shown in fig. 3, in the refrigerant leakage simulation test device, a lifting table 10 is further disposed at the bottom end inside the oven 1. Before the test is started, the lifting platform can be lifted to support the refrigerant tank, and when the test is started, the lifting platform can be lowered to prevent the breakage of a lifting rope caused by hanging an overweight object for a long time, and the weighing precision of the electronic scale can be influenced by long-time weighing.
The refrigerant simulation leakage test device is characterized in that an exhaust pipeline and an exhaust device are further arranged inside the oven 1. The exhaust pipeline and the exhaust device can discharge the leaked refrigerant caused by the failure of the valve in the oven, so that the explosion danger caused by excessive refrigerant accumulation is avoided.
The refrigerant simulation leakage test device, the electronic scale 2 also includes a time timing module, and a mass and time ratio operation module. The device can display the read quality value, the time value and the ratio of the quality to the time in real time, conveniently adjust the variable value of the whole test device, and more efficiently complete the whole test process.
In the refrigerant leakage simulation test device, a touch display screen capable of displaying time timing, quality and time ratio is also arranged outside the oven 1. The touch display screen can display the information of time, quality and time ratio, and is convenient for monitoring the leakage amount of the refrigerant and controlling the leakage rate of the refrigerant.
Claims (10)
1. A refrigerant leakage simulation test device is characterized by comprising an oven (1) and a refrigerant tank (3) arranged in the oven (1), wherein an air valve (5) is arranged at the outlet of the refrigerant tank (3), a refrigerant rate control valve (8) is arranged on the outer side of the oven (1), and the air valve (5) is connected with the refrigerant rate control valve (8) through a capillary tube (6); an electronic scale (2) is arranged on the outer side of the top of the oven (1), and the refrigerant tank (3) is arranged on a weighing part of the electronic scale (2) through a suspension device (4); a capillary tube (6) for guiding the refrigerant to a detection point is connected to the outlet side of the refrigerant rate control valve (8).
2. The refrigerant leakage simulation test device according to claim 1, wherein the suspension device (4) comprises a hanging rod (41) arranged on a weighing part of the electronic scale and hanging ropes (42) at two ends of the hanging rod, balancing arms (43) extending outwards are arranged at two sides of the refrigerant tank (3), the hanging ropes (42) at two ends of the hanging rod (41) penetrate through the wall surface of the oven (1), and the bottoms of the hanging ropes are respectively tied on the two balancing arms (43).
3. A refrigerant simulation leakage test device according to claim 1, wherein an air storage tank (7) is further arranged between the refrigerant tank (3) and the refrigerant rate control valve (8), the air valve (5) is communicated with the air storage tank (7) through a capillary tube (6), and the air storage tank (7) is communicated with the refrigerant rate control valve (8) through a pipeline.
4. A refrigerant simulation leak test apparatus as claimed in claim 1, wherein said refrigerant rate control valve is a precision pressure regulating valve.
5. A refrigerant leakage simulation test device according to claim 1, wherein the electronic scale (2) is a tension-type sensing scale, the suspension device (4) comprises two opposite clasps (44) extending downwards from the tension-type sensing scale, and the clasps (44) can clamp the refrigerant tank (3) from two sides.
6. A refrigerant simulation leakage test device according to claim 1, wherein a lifting platform (10) is further arranged at the bottom end inside the oven (1).
7. A refrigerant simulation leakage test device according to claim 1, characterized in that an exhaust pipeline and an exhaust device are further arranged inside the oven (1).
8. The refrigerant leakage simulation test device according to claim 5, wherein the contact part of the bottom of the tension type sensing scale and the top of the oven is provided with a vertical surrounding edge, and a closed space is formed at the edge of the bottom of the sensing scale.
9. A refrigerant leakage simulation test device according to any one of claims 1 to 8, wherein the electronic scale (2) further comprises a time timing module and a mass to time ratio calculation module.
10. A refrigerant simulation leakage test device according to claim 9, wherein a touch display screen capable of displaying time timing, quality and time ratio is further installed outside the oven (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645641.7U CN210513555U (en) | 2019-09-29 | 2019-09-29 | Refrigerant simulation leakage test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921645641.7U CN210513555U (en) | 2019-09-29 | 2019-09-29 | Refrigerant simulation leakage test device |
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| CN210513555U true CN210513555U (en) | 2020-05-12 |
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| CN201921645641.7U Active CN210513555U (en) | 2019-09-29 | 2019-09-29 | Refrigerant simulation leakage test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567645A (en) * | 2019-09-29 | 2019-12-13 | 广州海关技术中心 | Refrigerant simulation leakage test device |
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- 2019-09-29 CN CN201921645641.7U patent/CN210513555U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567645A (en) * | 2019-09-29 | 2019-12-13 | 广州海关技术中心 | Refrigerant simulation leakage test device |
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