Refrigerant leakage detection device for air conditioning system of rail transit vehicle

Abstract

The utility model belongs to the technical field of detection devices, and particularly relates to a refrigerant leakage detection device for an air conditioning system of a rail transit vehicle. The device comprises an instrument main machine, built-in spaces are formed in the two sides of a collecting suction head, a plurality of springs and special-shaped pressing blocks are arranged in the built-in spaces, meanwhile, a limiting head is arranged below the special-shaped pressing blocks, a sealing ring block is arranged outside the collecting suction head in a sleeving mode, and a conical cover body is arranged outside the sealing ring block in a sleeving mode. Limiting groove parts are arranged on the two sides of the inner wall of the sealing ring block, the limiting head part is inserted into the limiting groove parts, and a magnetic gasket is arranged below the conical cover body. According to the refrigerant leakage detection device, by means of matching between the collecting suction head and the conical cover body, the accuracy and the response speed of refrigerant leakage detection are improved, and the safety and the reliability of an air conditioning system of a rail transit vehicle are enhanced.

Description

Technical Field

[0001] The utility model belongs to the technical field of detection devices and relates to a refrigerant leakage detection device for an air-conditioning system of a rail transit vehicle. Background Art

[0002] The efficient and stable operation of rail transit vehicle air-conditioning systems is crucial to ensuring passenger comfort and vehicle performance. Refrigerant leakage is one of the main issues affecting the performance of air-conditioning systems. It not only leads to reduced energy efficiency, but may also pollute the environment. When detecting existing refrigerants, a person manually holds a detection instrument and places the collecting head at the front end of the detection instrument at the leak site. The value is displayed on the instrument based on the collected refrigerant. However, since the refrigerant evaporates quickly when leaking, the refrigerant collected at the detected location will have errors, affecting the response speed and accuracy of the detection, and reducing the safety and reliability of rail transit vehicle air-conditioning systems. Therefore, in response to the above problems, a refrigerant leakage detection device for rail transit vehicle air-conditioning systems is proposed. Utility Model Content

[0003] The purpose of the present invention is to provide a refrigerant leakage detection device for an air-conditioning system of a rail transit vehicle in order to solve the above-mentioned problem.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A refrigerant leakage detection device for a rail transit vehicle air-conditioning system includes an instrument main unit, a collection pipe is inserted and fixedly connected to the top of the instrument main unit, and the other end of the collection pipe is fixedly connected to a collection suction head, springs and special-shaped pressing blocks are provided on both sides of the collection suction head, and the outer end of the spring is placed in the middle of the inner side of the special-shaped pressing block, while the top of the special-shaped pressing block passes through the side of the collection suction head, a limiting head is provided on the outside of the bottom of the special-shaped pressing block, and the limiting head is placed outside and below the side of the collection suction head, a sealing ring block is provided on the outer sleeve below the collection suction head, and a limiting head is inserted in the sealing ring block, the outer sleeve of the sealing ring block is provided with the middle of the upper part of the conical cover body, and a magnetic gasket is provided below the conical cover body.

[0006] In the above-mentioned refrigerant leakage detection device for the rail transit vehicle air-conditioning system, built-in spaces are opened on both sides of the collecting suction head, and the two built-in spaces are symmetrical. At the same time, the inner sides of the two built-in spaces are distanced from the air suction channel in the collecting suction head. The collecting suction head is connected to the collection pipe and the instrument host.

[0007] In the above-mentioned refrigerant leakage detection device for rail transit vehicle air-conditioning system, multiple springs are fixedly connected to the inner side of the built-in space, and there is a gap between the multiple springs. The outer end of the spring is fixedly connected to the inner wall of the special-shaped pressing block.

[0008] In the above-mentioned refrigerant leakage detection device for rail transit vehicle air-conditioning system, the inner side of the special-shaped pressing block is placed in the built-in space, and a pressing opening and a limiting opening are respectively opened above and below the built-in space.

[0009] In the above-mentioned rail transit vehicle air-conditioning system refrigerant leakage detection device, the upper part of the special-shaped pressing block passes through the sliding connection pressing opening, and the lower part of the special-shaped pressing block is fixedly connected to the limiting head, and the limiting head passes through the sliding connection limiting opening.

[0010] In the above-mentioned refrigerant leakage detection device for rail transit vehicle air-conditioning system, limiting grooves are provided on both sides of the inner wall of the sealing ring block, and the two limiting grooves are symmetrical.

[0011] In the above-mentioned refrigerant leakage detection device for rail transit vehicle air-conditioning system, the limiting head is inserted into the limiting groove and fixedly connected, and the inner wall of the sealing ring block is tightly fitted with the outer wall of the collecting suction head.

[0012] In the above-mentioned refrigerant leakage detection device for the rail transit vehicle air-conditioning system, there is a distance between the top of both sides of the sealing ring block and the protruding portion of the special-shaped pressing block.

[0013] In the above-mentioned refrigerant leakage detection device for rail transit vehicle air-conditioning system, the outer middle portion of the sealing ring block is sleeved and fixedly connected to the middle of the top of the conical cover, and the conical cover is inserted under the collecting suction head.

[0014] In the above-mentioned refrigerant leakage detection device for rail transit vehicle air-conditioning systems, a magnetic washer is fixedly connected around the bottom of the conical cover.

[0015] Compared with the existing technology, the advantages of this utility model are:

[0016] The utility model is provided with built-in spaces on both sides of the collecting suction head, and multiple springs and special-shaped pressing blocks are provided in the built-in spaces. At the same time, a limiting head is provided below the special-shaped pressing block, a sealing ring block is sleeved on the outside of the collecting suction head, and a conical cover body is provided on the outer cover of the sealing ring block, limiting grooves are provided on both sides of the inner wall of the sealing ring block, and the limiting heads are inserted into the limiting grooves, and a magnetic gasket is provided under the conical cover body. The cooperation between the collecting suction head and the conical cover body is utilized to improve the accuracy and response speed of refrigerant leakage detection, and enhance the safety and reliability of the air-conditioning system of rail transit vehicles.

[0017] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the utility model;

[0019] Figure 2 It is an enlarged schematic diagram of point A of the present utility model;

[0020] Figure 3 It is an enlarged schematic diagram of point B of the present utility model;

[0021] Figure 4 This is a side view schematic diagram of the collection nozzle of the present invention;

[0022] Figure 5 It is a bottom view of the conical cover body of the present invention.

[0023] In the figure: 1. Instrument main unit; 2. Collection tube; 3. Collection suction head; 301. Built-in space; 302. Pressing opening; 303. Limiting opening; 4. Conical cover; 5. Sealing ring block; 501. Limiting groove; 6. Magnetic gasket; 7. Special-shaped pressing block; 8. Spring; 9. Limiting head. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the accompanying drawings.

[0025] like Figure 1-5 As shown, a refrigerant leakage detection device for a rail transit vehicle air-conditioning system includes an instrument host 1, a collecting tube 2 is inserted and fixedly connected to the top of the instrument host 1, and the other end of the collecting tube 2 is fixedly connected to a collecting suction head 3, springs 8 and special-shaped pressing blocks 7 are provided on both sides of the collecting suction head 3, and the outer end of the spring 8 is placed in the middle of the inner side of the special-shaped pressing block 7, and at the same time, the top of the special-shaped pressing block 7 passes through the side of the collecting suction head 3, and a limiting head 9 is provided on the outside of the bottom of the special-shaped pressing block 7, and the limiting head 9 is placed outside and below the side of the collecting suction head 3, a sealing ring block 5 is provided on the outer sleeve below the collecting suction head 3, and a limiting head 9 is inserted in the sealing ring block 5, the outer sleeve of the sealing ring block 5 is provided with a conical cover 4 in the middle of the top, and a magnetic gasket 6 is provided below the conical cover 4.

[0026] Built-in spaces 301 are opened on both sides of the collection pipette head 3, and the two built-in spaces 301 are symmetrical. At the same time, the inner sides of the two built-in spaces 301 are separated from the suction channel in the collection pipette head 3. The collection pipette head 3 is connected to the collection tube 2 and the instrument host 1.

[0027] Connect the collecting tube 2 and the collecting nozzle 3 on the outside of the instrument main unit 1, and place the collecting nozzle 3 at the refrigerant leakage point. The leaked refrigerant is absorbed into the collecting tube 2 through the internal structure of the collecting nozzle 3, and then into the inside of the instrument main unit 1. The numerical value displayed on the top of the instrument main unit 1 can tell the situation at that point.

[0028] Furthermore, a plurality of springs 8 are fixedly connected to the inner side of the built-in space 301 , and there is a gap between the plurality of springs 8 , and the outer ends of the springs 8 are fixedly connected to the inner wall of the special-shaped pressing block 7 .

[0029] A spring 8 is provided in the built-in space 301 provided in the collecting suction head 3, and the outer end of the spring 8 is connected to the special-shaped pressing block 7, so that the top of the special-shaped pressing block 7 can be pressed from the outside to make the special-shaped pressing block 7 enter the built-in space 301. After releasing the top of the special-shaped pressing block 7, due to the characteristics of the spring 8, the special-shaped pressing block 7 returns to its original position.

[0030] Furthermore, the inner side of the special-shaped pressing block 7 is placed in the built-in space 301 , and a pressing opening 302 and a limiting opening 303 are respectively opened above and below the built-in space 301 .

[0031] The pressing opening 302 and the limiting opening 303 provided in the built-in space 301 allow the upper portion of the special-shaped pressing block 7 and the limiting head 9 to pass through the collecting nozzle 3 without affecting the movement of the special-shaped pressing block 7 and the limiting head 9.

[0032] Furthermore, the special-shaped pressing block 7 passes through the upper portion thereof to be slidably connected to the pressing opening 302 , and the special-shaped pressing block 7 is fixedly connected to the limiting head 9 at the lower portion thereof, while the limiting head 9 passes through the lower portion thereof to be slidably connected to the limiting opening 303 .

[0033] The upper part of the special-shaped pressing block 7 is passed through the pressing opening 302, which makes it convenient to press the entire special-shaped pressing block 7 during installation. The limiting head 9 provided below the special-shaped pressing block 7 is passed through the limiting opening 303, so that when the upper part of the special-shaped pressing block 7 is pressed, the limiting head 9 will also be retracted into the built-in space 301.

[0034] Limiting grooves 501 are provided on both sides of the inner wall of the sealing ring block 5 , and the two limiting grooves 501 are symmetrical.

[0035] Furthermore, the limiting head 9 is inserted and fixedly connected into the limiting groove 501 , and the inner wall of the sealing ring block 5 is tightly fitted with the outer wall of the collecting suction head 3 .

[0036] After the limiting head 9 is inserted into the limiting groove 501 provided in the sealing ring block 5, the limiting head 9 is fixedly connected to the sealing ring block 5, so that the sealing ring block 5 is connected to the collecting suction head 3, and at the same time, the inner wall of the sealing ring block 5 seals the outside of the collecting suction head 3.

[0037] Furthermore, there is a distance between the top of both sides of the sealing ring block 5 and the protruding portion of the special-shaped pressing block 7.

[0038] After the sealing ring block 5 is sleeved on the outside of the collecting suction head 3, the upper part of the special-shaped pressing block 7 will not touch the sealing ring block 5 when pressed, and the installation can be normal.

[0039] Furthermore, the outer middle portion of the sealing ring block 5 is sleeved and fixedly connected to the middle of the top of the conical cover 4 , and the conical cover 4 is inserted below the collecting suction head 3 .

[0040] A conical cover 4 is provided outside the sealing ring block 5, so that the suction port below the collecting suction head 3 is placed inside the conical cover 4. After the conical cover 4 is placed outside the leakage, the suction port below the collecting suction head 3 can absorb the refrigerant.

[0041] Furthermore, a magnetic washer 6 is fixedly connected around the bottom of the conical cover 4 .

[0042] The magnetic gasket 6 provided under the conical cover 4 can be directly attached to the iron edge of the leak during detection, and the magnetic gasket 6 is used to seal the periphery of the leak so that the refrigerant at the internal leak will not evaporate.

[0043] Working principle:

[0044] A collecting tube 2 is provided above the instrument main unit 1, and a collecting nozzle 3 is provided at the outer end of the collecting tube 2. Since the instrument main unit 1 is small, personnel can take it to various leaking places for detection, and then suck the refrigerant at the leaking place into the instrument main unit 1 through the collecting nozzle 3 to obtain the numerical value. Built-in spaces 301 are provided on both sides of the collecting nozzle 3, and a plurality of springs 8 and special-shaped pressing blocks 7 are provided in the built-in space 301, so that the spring 8 supports the special-shaped pressing block 7 so that the special-shaped pressing block 7 can move in the built-in space 301, and a pressing opening 302 and a limiting opening 303 are provided above and below the built-in space 301 respectively, and a limiting head 9 is provided below the special-shaped pressing block 7, and the upper part of the special-shaped pressing block 7 is passed through the pressing opening 302, and the limiting head 9 is passed through the limiting opening 303. When the special-shaped pressing block 7 is pressed, the limiting After the sealing ring block 5 is in place, the upper part of the special-shaped pressing block 7 is released, and the limiting head 9 is retracted into the built-in space 301. After the sealing ring block 5 is in place, the upper part of the special-shaped pressing block 7 is released, so that the limiting head 9 is inserted into the limiting groove 501, and the installation of the conical cover 4 and the collecting suction head 3 is completed. Conversely, the upper part of the special-shaped pressing block 7 can be pressed again to remove the conical cover 4.

[0045] In addition, a magnetic gasket 6 is provided under the conical cover 4. When detection is required, the magnetic gasket 6 is placed on the periphery of the leak. The magnetic gasket 6 is fitted to the iron edge around the leak, allowing the conical cover 4 to seal the leak all around to prevent the refrigerant from volatilizing, so that the internal values ​​can be accurately detected.

[0046] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described, or replace them with similar methods, without departing from the spirit of the present invention.

[0047] Although this document frequently uses terms such as 1. instrument main unit; 2. collection tube; 3. collection tip; 301. built-in space; 302. pressing opening; 303. position-limiting opening; 4. conical cover; 5. sealing ring block; 501. position-limiting groove; 6. magnetic washer; 7. special-shaped pressing block; 8. spring; and 9. position-limiting head, the use of other terms is not excluded. These terms are used solely to more conveniently describe and explain the essence of the present invention. Interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A refrigerant leakage detection device for a rail transit vehicle air conditioning system, comprising an instrument main unit (1), a collection pipe (2) fixedly inserted into the upper portion of the instrument main unit (1), and a collection nozzle (3) fixedly connected to the other end of the collection pipe (2), characterized in that: A spring (8) and a special-shaped pressing block (7) are provided on both sides of the collecting suction head (3), and the outer end of the spring (8) is placed in the middle of the inner side of the special-shaped pressing block (7). At the same time, the top of the special-shaped pressing block (7) passes through the side of the collecting suction head (3). A limiting head (9) is provided outside the bottom of the special-shaped pressing block (7), and the limiting head (9) is placed outside the bottom of the side of the collecting suction head (3). A sealing ring block (5) is provided on the outer sleeve below the collecting suction head (3), and a limiting head (9) is inserted into the sealing ring block (5). The outer sleeve of the sealing ring block (5) is provided with the middle of the upper part of the conical cover body (4), and a magnetic gasket (6) is provided below the conical cover body (4).

2. The refrigerant leakage detection device for a rail transit vehicle air conditioning system according to claim 1, characterized in that: Both sides of the collecting suction head (3) are provided with built-in spaces (301), and the two built-in spaces (301) are symmetrical. At the same time, the inner sides of the two built-in spaces (301) are spaced apart from the suction channel inside the collecting suction head (3). The collecting suction head (3) is connected to the collecting tube (2) and the instrument main unit (1).

3. The refrigerant leakage detection device for a rail transit vehicle air conditioning system according to claim 2, characterized in that: A plurality of springs (8) are fixedly connected to the inner side of the built-in space (301), and there is a spacing between the plurality of springs (8). The outer ends of the springs (8) are fixedly connected to the inner side wall of the special-shaped pressing block (7).

4. The refrigerant leakage detection device for a rail transit vehicle air conditioning system according to claim 3, characterized in that: The inner side of the special-shaped pressing block (7) is placed in the built-in space (301), and a pressing opening (302) and a limiting opening (303) are respectively opened above and below the built-in space (301).

5. The refrigerant leakage detection device for a rail transit vehicle air conditioning system according to claim 4, characterized in that: The special-shaped pressing block (7) passes through a sliding connection pressing opening (302) above, and the special-shaped pressing block (7) is fixedly connected to a limiting head (9) below, and the limiting head (9) passes through a sliding connection limiting opening (303).

6. The refrigerant leakage detection device for a rail transit vehicle air conditioning system according to claim 5, characterized in that: Limiting grooves (501) are provided on both sides of the inner wall of the sealing ring block (5), and the two limiting grooves (501) are symmetrical.

7. The refrigerant leakage detection device for a rail transit vehicle air conditioning system according to claim 6, characterized in that: The limiting head (9) is inserted into the limiting groove (501) for fixed connection, and the inner wall of the sealing ring block (5) is tightly fitted with the outer wall of the collecting suction head (3).

8. The refrigerant leakage detection device for a rail transit vehicle air conditioning system according to claim 7, characterized in that: There is a distance between the tops of both sides of the sealing ring block (5) and the protruding portion of the special-shaped pressing block (7).

9. The refrigerant leakage detection device for a rail transit vehicle air conditioning system according to claim 8, characterized in that: The outer middle portion of the sealing ring block (5) is sleeved and fixedly connected to the middle of the top of the conical cover body (4), and the conical cover body (4) is inserted below the collecting suction head (3).

10. The refrigerant leakage detection device for rail transit vehicle air conditioning system according to claim 9, characterized in that: A magnetic washer (6) is fixedly connected around the bottom of the conical cover (4).

Images