CN216559707U

CN216559707U - Control valve test equipment

Info

Publication number: CN216559707U
Application number: CN202122954765.7U
Authority: CN
Inventors: 王位强; 林记亮
Original assignee: Suzhou Zhongcheng New Energy Technology Co ltd
Current assignee: Suzhou Zhongcheng New Energy Technology Co ltd
Priority date: 2021-11-29
Filing date: 2021-11-29
Publication date: 2022-05-17
Anticipated expiration: 2031-11-29

Abstract

The utility model discloses a control valve test device, comprising: a control valve including a high pressure orifice, a medium pressure orifice, and a low pressure orifice; the high-pressure detection unit comprises a high-pressure reducing valve, a first switch and a high-pressure gauge, the first switch is connected with the high-pressure reducing valve and the high-pressure gauge, and the high-pressure gauge is communicated with the high-pressure hole; the medium-pressure detection unit is communicated with a second gas source and comprises a first pressure regulating valve and a medium-pressure gauge which are communicated with each other, and the medium-pressure gauge is communicated with the medium-pressure hole; the low pressure detecting unit comprises a second switch and a low pressure gauge which are communicated with each other, and the low pressure gauge is communicated with the low pressure hole. The utility model realizes the detection effect of the control valve, so that the qualified control valve can be quickly screened out, and the yield of the control valve in the use process is further ensured.

Description

Control valve test equipment

Technical Field

The utility model relates to the field of mechanical testing, in particular to control valve detection equipment.

Background

The control valve is a control structure in the compressor, the high pressure hole on the control valve is positioned in the high pressure area of the compressor, the middle pressure area on the control valve is positioned in the middle pressure area of the compressor, and the low pressure hole on the control valve is positioned in the low pressure area of the compressor. In practical use, a pressure difference is formed between the medium pressure area and the low pressure area, and a pressure difference also exists between the high pressure area and the medium pressure area as well as between the high pressure area and the low pressure area, so that the low pressure hole needs to discharge the pressure of the high pressure hole or the medium pressure hole. In the prior art, an effective device for detecting the control valve is lacked, so that the control valve cannot be detected, and the problem that the yield cannot be guaranteed in the use process of the control valve is solved.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the embodiment of the utility model provides control valve detection equipment, which is used for solving the problem that the control valve cannot be detected, so that the yield of the control valve cannot be ensured in the using process.

The embodiment of the application discloses: a control valve testing apparatus comprising: the control valve comprises a high-pressure hole, a medium-pressure hole and a low-pressure hole, wherein a first telescopic unit penetrates through the high-pressure hole, the first telescopic unit is positioned between the high-pressure hole and the low-pressure hole, the second telescopic unit is positioned between the medium-pressure hole and the low-pressure hole, the high-pressure hole and the low-pressure hole are isolated when the first telescopic unit is in an extending state, the high-pressure hole and the low-pressure hole are communicated when the first telescopic unit is in an extending state, the medium-pressure hole and the low-pressure hole are isolated when the second telescopic unit is in a compressing state, and the medium-pressure hole and the low-pressure hole are communicated when the second telescopic unit is in a compressing state; the high-pressure detection unit comprises a high-pressure reducing valve, a first switch and a high-pressure gauge, the high-pressure reducing valve is communicated with a first gas source, the first switch is connected with the high-pressure reducing valve and the high-pressure gauge, and the high-pressure gauge is communicated with the high-pressure hole; the medium-pressure detection unit is communicated with a second gas source and comprises a first pressure regulating valve and a medium-pressure gauge which are communicated with each other, the first pressure regulating valve is communicated with the second gas source, and the medium-pressure gauge is communicated with the medium-pressure hole; the low pressure detecting unit comprises a second switch and a low pressure gauge which are communicated with each other, and the low pressure gauge is communicated with the low pressure hole.

Further, including mounting fixture, mounting fixture includes the base and is located the flexible unit of base upper end, flexible unit include the pars contractilis and with pars contractilis fixed connection's spacing portion, spacing portion be in when the pars contractilis extended out state with the base butt, partly arranging in of control valve the base, another part of control valve is arranged in the pars contractilis.

Further, the base with high pressure hole and high pressure detecting element intercommunication, spacing portion communicate respectively the middling pressure hole with middling pressure detecting element and low pressure hole with low pressure detecting element.

Further, the control valve barrel is provided with a sealing ring, and the sealing ring is located between the control valve and the limiting part.

Further, the first switch and the second switch are both three-way switches.

Further, the low pressure detection unit comprises a second pressure regulating valve, the second pressure regulating valve is communicated with the second switch, and the second pressure regulating valve is communicated with the second air source.

Further, the second air source is communicated with a third pressure regulating valve, and the third pressure regulating valve is communicated with the first pressure regulating valve and the second pressure regulating valve.

Further, the gas in the first gas source and the second gas source is nitrogen.

The utility model has the following beneficial effects:

through the high pressure detecting element, middling pressure detecting element and the intercommunication of low pressure detecting element and control valve and detect it for can detect the intercommunication effect between middling pressure hole and the low pressure hole and between high pressure hole, middling pressure hole and the low pressure hole, simulate the pressure differential condition that appears in the in-service use process, thereby realized the detection effect to the control valve, make can select qualified control valve fast, and then guarantee the yields of control valve in the use.

In order to make the aforementioned and other objects, features and advantages of the utility model comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a control valve test apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a control valve in an embodiment of the present invention.

Reference numerals of the above figures: 1. a control valve; 11. a high pressure hole; 12. a medium pressure hole; 13. a low pressure port; 14. a first telescopic unit; 15. a second telescopic unit; 2. a high voltage detection unit; 21. a high pressure relief valve; 22. a first switch; 23. a high pressure gauge; 3. a medium voltage detection unit; 31. a first pressure regulating valve; 32. a medium pressure gauge; 4. a low voltage detection unit; 41. a second switch; 42. a low pressure gauge; 43. a second pressure regulating valve; 5. and a third pressure regulating valve.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 2, the control valve testing apparatus of the present embodiment includes:

the control valve 1, control valve 1 includes high pressure port 11, middling pressure port 12 and low pressure port 13, and when control valve 1 set up in the compressor, high pressure port 11, middling pressure port 12 and low pressure port 13 respectively with the high pressure region of compressor, middling pressure region and low pressure region intercommunication. The high-pressure hole 11 may be provided with a first telescopic unit 14 in a penetrating manner, and one end of the first telescopic unit 14 away from the high-pressure hole 11 may be abutted against a second telescopic unit 15, so that the first telescopic unit 14 is gradually inserted into the control valve 1, that is, when the first telescopic unit 14 gradually changes to an extended state, the second telescopic unit 15 provides a restoring force to the first telescopic unit 14. Of course, in other alternative embodiments, the positions of the first telescopic unit 14 and the second telescopic unit 15 may be adjusted according to actual needs. The first telescopic unit 14 may be located between the high pressure hole 11 and the low pressure hole 13, and the second telescopic unit 15 may be located between the medium pressure hole 12 and the low pressure hole 13. The high pressure hole 11 and the low pressure hole 13 can be isolated when the first telescopic unit 14 is in a compressed state, so that the pressure around the high pressure hole 11 and the low pressure hole 13 can not be communicated when the first telescopic unit 14 is in the compressed state. The high pressure port 11 and the low pressure port 13 are in communication when the first telescopic unit 14 is in the extended state, so that high pressure around the high pressure port 11 can pass through the low pressure port 13 along with pressure when the first telescopic unit 14 is in the extended state. When the second telescopic unit 15 is in the extending state, the medium pressure hole 12 and the low pressure hole 13 are isolated, so that the pressure around the medium pressure hole 12 and the low pressure hole 13 can not be communicated with each other when the second telescopic unit 15 is in the extending state. The second telescopic unit 15 is in communication between the medium pressure port 12 and the low pressure port 13 in a compressed state, so that the medium pressure around the medium pressure port 12 can pass through the low pressure port 13 along with the pressure when the second telescopic unit 15 is in a compressed state.

The high pressure detection unit 2, the high pressure detection unit 2 can include high pressure relief valve 21, first switch 22 and high pressure gauge 23, high pressure relief valve 21 can communicate with first air supply. The high pressure reducing valve 21 may reduce the pressure of the gas of the first gas source, so that the high pressure reducing valve 21 may control the pressure of the gas passing through the first switch 22 and the high pressure gauge 23, thereby changing the pressure of the gas passing through the high pressure hole 11. The first switch 22 may be connected to the high pressure reducing valve 21 and the high pressure gauge 23, so that the first switch 22 may control the air path inside the high pressure detection unit 2, and further control the air flow around the high pressure hole 11. The high pressure gauge 23 is communicated with the high pressure hole 11, so that the high pressure gauge 23 can detect the pressure of the gas flowing through the high pressure hole 11.

The medium pressure detection unit 3, the medium pressure detection unit 3 may be in communication with a second gas source, the medium pressure detection unit 3 may include a first pressure regulating valve 31 and a medium pressure gauge 32, which are in communication with each other, and the first pressure regulating valve 31 may be in communication with the second gas source, so that the first pressure regulating valve 31 may regulate the gas pressure of the second gas source, so that the first pressure regulating valve 31 may control the gas pressure passing through the medium pressure gauge 32. The medium pressure gauge 32 may communicate with the medium pressure hole 12 such that the medium pressure gauge 32 can detect the pressure of the gas flowing through the medium pressure hole 12.

And a low pressure detecting unit 4, wherein the low pressure detecting unit 4 may include a second switch 41 and a low pressure gauge 42 which are communicated with each other. The second switch 41 may control an air passage inside the low pressure detection unit 4, so as to control the air flow around the low pressure hole 13. The low pressure gauge 42 is in communication with the low pressure hole 13, so that the low pressure gauge 42 can detect the pressure of the gas flowing through the low pressure hole 13.

In an alternative embodiment, the first switch 22 is closed, the first pressure regulating valve 31 is adjusted to make the reading of the middle pressure gauge 32 be 0.27MPa, then the second switch 41 is opened, the reading of the low pressure gauge 42 gradually rises at this time, which represents that the second expansion unit 15 gradually changes into a compression state, and finally the reading of the low pressure gauge 42 at the maximum change value is read, and if the reading range is in the range of 0211 ± 0.01MPa, the requirement between the middle pressure hole 12 and the low pressure hole 13 is proved.

In another alternative embodiment, the high pressure relief valve 21 is adjusted and the first switch 22 is opened so that the reading on the high pressure gauge 23 is 1.47 MPa. Then, the first pressure reducing valve is adjusted so that the indication of the medium pressure gauge 32 becomes 0.235MPa, then the second switch 41 is opened, at which time the indication of the low pressure gauge 42 gradually rises, representing that the first telescopic unit 14 gradually becomes the extended state and the second telescopic unit 15 gradually becomes the compressed state, and finally the reading of the low pressure gauge 42 at the maximum value of the change thereof is read, and if the reading range thereof is within the range of 0.176 ± 0.01MPa, it is proved that the requirements among the high pressure gauge, the medium pressure gauge and the low pressure gauge are met.

Borrow by above-mentioned structure, through high pressure detecting element 2, middling pressure detecting element 3 and low pressure detecting element 4 and control valve 1's intercommunication and detect it for can detect the pressure differential condition that appears in the in-service use process to the intercommunication effect between middling pressure hole 12 and the low pressure hole 13 and high-pressure hole 11, middling pressure hole 12 and the low pressure hole 13, thereby realized the detection effect to control valve 1, make qualified control valve 1 of can selecting fast, and then guarantee the yields of control valve 1 in the use.

Specifically, the testing device can comprise a fixing clamp, the fixing clamp can comprise a base and a telescopic unit positioned at the upper end of the base, the telescopic unit can comprise a telescopic part and a limit part fixedly connected with the telescopic part, the limit part can be abutted against the base when the telescopic part is in an extending state, one part of the control valve 1 is arranged on the base, the other part of the control valve 1 is arranged in the telescopic part, so that the fixing clamp can fix the control valve 1, and the detection stability of the whole testing device is improved,

specifically, the base with high pressure hole 11 and high pressure detecting element 2 intercommunication, spacing portion communicates respectively well pressure hole 12 with well pressure detecting element 3 and low pressure hole 13 with low pressure detecting element 4. Therefore, the control valve 1 can be detected by testing equipment when being arranged in the fixing clamp, and the whole testing equipment is more convenient and practical.

Specifically, 1 cover of control valve is equipped with the sealing washer, the sealing washer is located control valve 1 with between the spacing portion, the sealing washer can be strengthened the base with frictional force between the spacing portion, thereby make spacing portion with the combination degree between the base is better.

Specifically, the first switch 22 and the second switch 41 may be both three-way switches, so that both the first switch 22 and the second switch 41 can control the flow rate and the pressure difference of the gas.

Specifically, the low pressure detecting unit 4 may include a second pressure regulating valve 43, the second pressure regulating valve 43 may be in communication with the second switch 41, and the second pressure regulating valve 43 is in communication with the second air source, so that the second pressure regulating valve 43 can regulate the air pressure flowing through the low pressure gauge 42 and the second switch 41.

Specifically, the second gas source is communicated with a third pressure regulating valve 5, and the third pressure regulating valve 5 is communicated with the first pressure regulating valve 31 and the second pressure regulating valve 43, so that the third pressure regulating valve 5 can regulate the pressure of the gas in the second gas source before the gas flows into the medium pressure detecting unit 3 and the low pressure detecting unit 4.

Specifically, the gases in the first gas source and the second gas source may be both nitrogen, so that chemical reactions between the gases in the first gas source and the second gas source and the control valve 1 can be prevented, and the effect of protecting the control valve 1 can be achieved in the detection process.

The principle and the implementation mode of the utility model are explained by applying specific embodiments in the utility model, and the description of the embodiments is only used for helping to understand the method and the core idea of the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.

Claims

1. A control valve testing apparatus, comprising:

the control valve comprises a high-pressure hole, a medium-pressure hole and a low-pressure hole, a first telescopic unit penetrates through the high-pressure hole, the first telescopic unit is located between the high-pressure hole and the low-pressure hole, a second telescopic unit is located between the medium-pressure hole and the low-pressure hole, the high-pressure hole and the low-pressure hole are isolated when the first telescopic unit is in an extending state, the high-pressure hole and the low-pressure hole are communicated when the first telescopic unit is in an extending state, the medium-pressure hole and the low-pressure hole are isolated when the second telescopic unit is in a compressing state, and the medium-pressure hole and the low-pressure hole are communicated when the second telescopic unit is in a compressing state;

the high-pressure detection unit comprises a high-pressure reducing valve, a first switch and a high-pressure gauge, the high-pressure reducing valve is communicated with a first gas source, the first switch is connected with the high-pressure reducing valve and the high-pressure gauge, and the high-pressure gauge is communicated with the high-pressure hole;

the medium-pressure detection unit is communicated with a second gas source and comprises a first pressure regulating valve and a medium-pressure gauge which are communicated with each other, the first pressure regulating valve is communicated with the second gas source, and the medium-pressure gauge is communicated with the medium-pressure hole;

the low pressure detecting unit comprises a second switch and a low pressure gauge which are communicated with each other, and the low pressure gauge is communicated with the low pressure hole.

2. The control valve test equipment according to claim 1, comprising a fixing clamp, wherein the fixing clamp comprises a base and a telescopic unit positioned at the upper end of the base, the telescopic unit comprises a telescopic part and a limiting part fixedly connected with the telescopic part, the limiting part is abutted against the base when the telescopic part is in an extending state, one part of the control valve is arranged in the base, and the other part of the control valve is arranged in the telescopic part.

3. The control valve testing apparatus of claim 2, wherein the base communicates with the high pressure bore and the high pressure sensing unit, and the limiting portion communicates with the medium pressure bore and the medium pressure sensing unit and the low pressure bore and the low pressure sensing unit, respectively.

4. Control valve test apparatus as claimed in claim 2, wherein the control valve housing is provided with a sealing ring, the sealing ring being located between the control valve and the limiting portion.

5. The control valve testing apparatus of claim 1, wherein the first switch and the second switch are both three-way switches.

6. The control valve testing apparatus of claim 1, wherein the low pressure detection unit includes a second pressure regulating valve in communication with the second switch, the second pressure regulating valve in communication with the second air supply.

7. The control valve testing apparatus of claim 6, wherein the second gas source is in communication with a third pressure regulating valve, the third pressure regulating valve being in communication with the first and second pressure regulating valves.

8. The control valve testing apparatus of claim 1, wherein the gas in the first gas source and the second gas source is nitrogen.