Sealing performance testing device for sealed switch machine

Abstract

The utility model relates to a sealing performance testing device for a sealed switch machine. The sealing performance testing device is characterized by comprising a buckling and pressing type sealing clamping unit (9), a detection unit (8) and a portable cart (10), the buckling and pressing type sealing clamping units (9) are fixed on the periphery of the sealing type switch machine (1) and are used for sealing vent holes (7) in two sides of a switch machine cover (6) and a wire inlet hole (4) of a bottom shell (5) respectively; the buckling and pressing type sealing clamping unit (9) is connected with the detection unit (8) through a test air pipe (25), and the detection unit (8) is arranged on the portable cart (10). Compared with an existing water immersion experiment method, the water immersion experiment device is reasonable in design structure, short in test process time, high in efficiency, energy-saving, emission-reducing, safe and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of turnout sealed switch machines, and particularly relates to a sealing performance testing device for a sealed switch machine. Background Art

[0002] The ZD(J)9 switch machine is a special device for railway turnout conversion. Its main function is to change the opening direction of the turnout by converting and locking the movable part of the turnout. At the same time, it can reflect the position and locking state of the turnout. This switch machine has the characteristics of compact appearance, simple structure, and convenient on-site maintenance, and is currently widely used in national railways, urban rail transit, and local railways.

[0003] In recent years, in coastal areas and areas with more rain, due to poor drainage of the foundation pit, water often enters the switch machine, resulting in rust of the internal components of the switch machine, and situations such as equipment operation jamming, poor contact of contacts, and reduction of the insulation performance of insulating parts often occur, which has an adverse impact on the working safety and reliability of the switch machine.

[0004] To meet the waterproof requirement of the turnout line for the switch machine, a sealed ZD(J)9 switch machine is designed on the basis of the original ZD(J)9 switch machine, that is, the design structures of the action rod, indicating rod, joint seams between the machine cover and the bottom shell, and connection holes around the outer shell are optimized on the basis of the original structure, so that the sealing level of the switch machine reaches IP67M.

[0005] At present, the sealing performance test of the sealed ZD(J)9 switch machine adopts the immersion test method. As Figure 1 shown, after the sealed ZD(J)9 switch machine 1 is assembled, the whole machine is transferred from the assembly area to the test area one by one, and the whole machine is lifted into the immersion tank 3 by an electric single-girder crane 2. According to the requirements of GB / T 4208-2017, it is necessary to ensure that the water surface is at least 0.15 m above the top of the outer shell, the bottom surface of the outer shell is at least 1 m below the water surface, and the immersion time for each machine is 30 min. After the timing is completed, the surface of the whole machine is cleaned, and then the machine cover is opened to observe whether there is water leakage.

[0006] The existing test method has the following deficiencies:

[0007] 1. The resource consumption in the test process is large. Every time 50 switch machines are tested, it is necessary to re-inject water, about 2.5 tons or so, and the repeated use pollutes the test water;

[0008] 2. The test time is long. Each test takes at least 40 min, reducing the production efficiency;

[0009] 3. The reliability of the test results is low. After immersion, the visual observation method is used to check for water leakage. This method is restricted by objective factors and causes certain interference to the test results;

[0010] 4. There are potential safety hazards. After the whole machine is assembled, a crane is needed to transfer the whole machine to the test area, and there is a potential hazard that the operator may be injured during the transfer process;

[0011] 5. High labor cost. Each immersion test requires at least three people to cooperate to complete, increasing the labor cost. Summary of the Invention

[0012] The purpose of the present invention is to provide a sealing type switch machine sealing performance testing device that is safe, reliable, and reasonable in structure, which solves the problems of large resource consumption, long testing time, low reliability of test results, potential safety hazards, and high labor cost existing in the existing testing methods, and effectively improves the production efficiency of products, so as to overcome the deficiencies of the existing testing methods.

[0013] The purpose of the present invention is achieved as follows: It relates to a sealing type switch machine sealing performance testing device, which is characterized in that it includes: a buckle type sealing and clamping unit, a detection unit; the buckle type sealing and clamping unit and the detection unit are connected through a test air pipe; the buckle type sealing and clamping unit is fixed around the sealing type switch machine, and the buckle type sealing and clamping unit includes: a test air pipe connection hole, a fixed plate ventilation hole, a first fixed plate, a second fixed plate, a test sealing ring, a clamp handle, a first manual quick clamp, a second manual quick clamp, a first support frame, a second support frame; the upper ends of the first support frame and the second support frame are respectively connected to the first manual quick clamp and the second manual quick clamp by bolts, and the lower ends of the first support frame and the second support frame are respectively connected to the first fixed plate and the second fixed plate; test sealing rings are installed on both sides of the first fixed plate and on the single side end face of the second fixed plate, and a fixed plate ventilation hole is added at the center of the end face of the second fixed plate; there is a test air pipe connection hole on the side face of the second fixed plate, and the test air pipe connection hole is communicated with the fixed plate ventilation hole; the clamp handle is connected to the first support frame by bolts; the sealing structures on both sides of the first support frame cooperate with the ventilation holes on both sides of the switch machine cover; the sealing structure of the second support frame cooperates with the wire inlet hole of the switch machine bottom shell.

[0014] The detection unit is placed on a portable trolley.

[0015] The detection unit includes: a pressure detector, a detection interface, an external air source quick interface, a human-machine interaction interface, a test air pipe; the human-machine interaction interface is located on the front of the pressure detector, and the detection interface and the external air source quick interface are located on the back of the pressure detector; one end of the test air pipe is connected to the detection interface, and the other end is connected to the test air pipe connection hole of the buckle type sealing and clamping unit, and the external air source quick interface is connected to the external air source; the external air source enters the pressure detector from the external air source quick interface, and then is filled into the sealing type switch machine through the test air pipe at the detection interface end.

[0016] The present utility model relates to a sealing test method for a sealed switch machine, characterized by comprising: a clamping type sealing and clamping unit and a detection unit, wherein the clamping type sealing and clamping unit and the detection unit are connected through a test air pipe; using the clamping type sealing and clamping unit to block the ventilation holes on both sides of the machine cover of the sealed switch machine and the wire inlet holes on the side of the bottom shell; then, filling a certain pressure of gas into the sealed switch machine, keeping the pressure for a period of time, and detecting the air pressure inside the machine through the detection unit, and judging whether the product has leakage through the change of air pressure; if the air pressure value is stable, it indicates that the sealing test of the switch machine is qualified; if the air pressure value drops, it indicates that the gas inside the switch machine leaks and the sealing test is unqualified.

[0017] Compared with the prior art, the positive effects of the present utility model are as follows:

[0018] 1. The present utility model reduces resource consumption, and does not need to use an electric single-girder crane during the test, saving the test energy cost.

[0019] 2. The present utility model shortens the test time and improves the production efficiency.

[0020] 3. Standardize the operation process and improve the reliability of the test results.

[0021] 4. The whole machine does not need to be turned around during the sealing test, eliminating potential safety hazards.

[0022] The following further describes the present utility model in conjunction with the embodiments and the drawings. Description of the Drawings

[0023] Figure 1 It is a schematic diagram of the device for the existing sealing test immersion test method;

[0024] Figure 2 It is a schematic diagram of the device for the sealing test gas test method of the embodiment of the present utility model;

[0025] Figure 3 It is a schematic diagram of the clamping type sealing and clamping unit for the sealing test gas test method of the present utility model;

[0026] Figure 4A It is the front view of the detection unit for the sealing test gas test method of the present utility model;

[0027] Figure 4B It is the side view of the detection unit for the sealing test gas test method of the present utility model;

[0028] Figure 5 It is the test principle diagram of the sealing test gas test method of the present utility model.

[0029] In the figure, 1. Sealed ZD(J)9 switch machine; 2. Electric single-girder crane; 3. Submersible water tank; 4. Inlet hole; 5. Bottom shell; 6. Machine cover; 7. Ventilation hole; 8. Detection unit; 9. Clamping type sealing and clamping unit; 10. Portable trolley; 11. Test air pipe connection hole; 12. Fixed plate ventilation hole; 13. First fixed plate; 14. Second fixed plate; 15. Test sealing ring; 16. Clamp handle; 17. First manual quick clamp; 18. Second manual quick clamp; 19. First support frame; 20. Second support frame; 21. Air pressure detector; 22. Detection interface; 23. External air source quick interface; 24. Human-computer interaction interface; 25. Test air pipe. Specific implementation mode

[0030] In order to further elaborate on the technical means and methods adopted by the present invention to achieve the predetermined purpose, the specific implementation mode, structural features and methods of the present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0031] As Figure 2 , Figure 3 , Figure 5 shown, the present invention relates to a sealing test device for a sealed switch machine, and is characterized in that it includes: a clamping type sealing and clamping unit 9 and a detection unit 8; the clamping type sealing and clamping unit 9 and the detection unit 8 are connected through a test air pipe 25; the clamping type sealing and clamping unit 9 is fixed around the sealed ZD(J)9 switch machine 1. The clamping type sealing and clamping unit 9 includes: a test air pipe connection hole 11, a fixed plate ventilation hole 12, a first fixed plate 13, a second fixed plate 14, a test sealing ring 15, a clamp handle 16, a first manual quick clamp 17, a second manual quick clamp 18, a first support frame 19, and a second support frame 20; the upper ends of the first support frame 19 and the second support frame 20 are respectively connected to the first manual quick clamp 17 and the second manual quick clamp 18 by bolts, and the lower ends of the first support frame 19 and the second support frame 20 are respectively connected to the first fixed plate 13 and the second fixed plate 14; test sealing rings 15 are installed on both sides of the first fixed plate 13 and on the single-side end face of the second fixed plate 14, and a fixed plate ventilation hole 12 is added at the center of the end face of the second fixed plate 14; there is a test air pipe connection hole 11 on the side of the second fixed plate 14, and the test air pipe connection hole 11 communicates with the fixed plate ventilation hole 12; the clamp handle 16 is connected to the first support frame 19 by bolts; the sealing structures on both sides of the first support frame 19 cooperate with the ventilation holes 7 on both sides of the machine cover 6 of the switch machine; the sealing structure of the second support frame 20 cooperates with the inlet hole 4 of the bottom shell 5 of the switch machine.

[0032] In use, the detection unit 8 is placed on the portable trolley 10. During the test, it is only necessary to push the portable trolley 10 next to the switch machine to be tested; then, use the snap-in sealing and clamping unit 9 to block the ventilation holes 7 on both sides of the cover 6 of the sealed switch machine and the cable inlet hole 4 on the side of the bottom case 5, and fill the sealed ZD(J)9 switch machine 1 with gas at a certain pressure. After maintaining the pressure for a period of time, detect the air pressure inside the switch machine through the detection unit 8, and judge whether there is leakage in the product according to the change of air pressure. If the air pressure value is stable, it means that the sealing test of the switch machine is qualified; if the air pressure value drops, it means that there is air leakage inside the switch machine and the sealing test is unqualified.

[0033] As Figure 4A 、 4B shown, the detection unit includes: a barometric pressure detector 21, a detection interface 22, an external gas source quick interface 23, a human-machine interaction interface 24, and a test air pipe 25; the human-machine interaction interface 24 is located on the front of the barometric pressure detector 21, and the detection interface 22 and the external gas source quick interface 23 are located on the back of the barometric pressure detector 21; one end of the test air pipe 25 is connected to the detection interface 22, and the other end is connected to the test air pipe connection hole 11 of the snap-in sealing and clamping unit 9, and the external gas source quick interface 23 is connected to the external gas source; the external gas source enters the barometric pressure detector 21 through the external gas source quick interface 23, and then is filled into the sealed ZD(J)9 switch machine 1 through the test air pipe 25 at the detection interface 22 end.

[0034] As Figure 5 shown, based on the device of the present invention, the following steps are completed:

[0035] First, place the sealed switch machine sealing test device on the portable trolley 10. During the test, it is only necessary to push the test device next to the switch machine to be tested; then, use the snap-in sealing and clamping unit 9 to block the ventilation holes 7 on both sides of the cover 6 of the sealed switch machine and the cable inlet hole 4 on the side of the bottom case 5, and fill the sealed ZD(J)9 switch machine 1 with gas at a certain pressure. After maintaining the pressure for a period of time, detect the air pressure inside the machine through the detection unit 8, and judge whether there is leakage in the product according to the change of air pressure. If the air pressure value is stable, it means that the sealing test of the switch machine is qualified; if the air pressure value drops, it means that there is air leakage inside the switch machine and the sealing test is unqualified.

[0036] The beneficial effects of the present invention are: First, the present invention reduces resource consumption and does not require the use of an electric single-girder crane 2 during the test, saving the test energy cost; second, the present invention shortens the test time and improves the production efficiency; third, standardizes the operation process and improves the reliability of the test results; fourth, the whole machine does not need to be transferred during the sealing test, eliminating potential safety hazards.

Claims

1. A sealing test device for a switch machine, characterized in that: Comprising: A clamping type sealing and clamping unit (9) and a detection unit (8); the clamping type sealing and clamping unit (9) and the detection unit (8) are connected through a test air pipe (25); the clamping type sealing and clamping unit (9) is fixed around the sealed ZD(J)9 switch machine (1), and the said clamping type sealing and clamping unit (9) includes: a test air pipe connection hole (11), a fixed plate ventilation hole (12), a first fixed plate (13), a second fixed plate (14), a test sealing ring (15), a clamp handle (16), a first manual quick clamp (17), a second manual quick clamp (18), a first support frame (19), a second support frame (20); the upper ends of the first support frame (19) and the second support frame (20) are respectively connected to the first manual quick clamp (17) and the second manual quick clamp (18) by bolts, and the lower ends of the first support frame (19) and the second support frame (20) are respectively connected to the first fixed plate (13) and the second fixed plate (14); test sealing rings (15) are installed on both sides of the first fixed plate (13) and on the single-side end face of the second fixed plate (14), and a fixed plate ventilation hole (12) is added at the center of the end face of the second fixed plate (14); there is a test air pipe connection hole (11) on the side face of the second fixed plate (14), and the test air pipe connection hole (11) communicates with the fixed plate ventilation hole (12); the clamp handle (16) is connected to the first support frame (19) by bolts; the sealing structures on both sides of the first support frame (19) cooperate with the ventilation holes (7) on both sides of the switch machine cover (6); the sealing structure of the second support frame (20) cooperates with the wire inlet hole (4) of the switch machine bottom shell (5).

2. A sealing type switch machine sealing performance testing device according to claim 1, characterized in that: The said detection unit (8) is placed on a portable trolley (10).

3. A sealing type switch machine sealing performance testing device according to claim 1, characterized in that: The said detection unit includes: a barometric pressure detector (21), a detection interface (22), an external air source quick interface (23), a human-machine interaction interface (24), a test air pipe (25); the human-machine interaction interface (24) is located on the front of the barometric pressure detector (21), and the detection interface (22) and the external air source quick interface (23) are located on the back of the barometric pressure detector (21); one end of the test air pipe (25) is connected to the detection interface (22), and the other end is connected to the test air pipe connection hole (11) of the clamping type sealing and clamping unit (9), and the external air source quick interface (23) is connected to an external air source; the external air source enters the barometric pressure detector (21) from the external air source quick interface (23), and then is filled into the sealed ZD(J)9 switch machine (1) through the test air pipe (25) at the detection interface (22) end.

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