A gas box inflation leak detection device

Abstract

The utility model belongs to airtightness detection equipment technical field, especially point to a kind of air tank inflation leak detection device;Including vacuum tank, still include: conveying mechanism, including the first roller way and the second roller way being separately arranged in vacuum tank, and the slide that can move on the first roller way and the second roller way;Limit locking mechanism, including the limiting piece being located at the outer end of the second roller way, locking cylinder and the push plate being located at the top of locking cylinder, the guide cylinder being located at the slide, the locking rod being vertically slid along guide cylinder, and the elastic supporting plate assembly being located at the bottom of slide;Wherein, when slide moves to resist limiting piece, push plate retracts elastic supporting plate assembly, locking rod falls into locking cylinder under the action of dead weight. The utility model dispenses with manual locking operation, avoids the risk of missing lock, improves the efficiency and security of air tank leak detection operation.

Description

Technical Field

[0001] This utility model belongs to the technical field of airtightness testing equipment, specifically referring to an air box inflation and leak detection device. Background Technology

[0002] Gas box filling and leak detection devices are key equipment for testing the sealing performance of gas boxes used in high-voltage electrical equipment, energy storage equipment, etc. By filling the gas box with detection gases such as helium, and combining it with a vacuum chamber to form a sealed detection environment, the device can accurately determine whether there is a leak in the gas box, ensuring the sealing reliability of the gas box in subsequent use.

[0003] In existing gas box filling and leak detection devices, the conveying mechanism uses an independent manual locking structure for the slide, lacking an automatic linkage locking function. Positioning requires manual operation of the locking rod. Furthermore, in actual production, workers are prone to forgetting to lock the slide due to negligence, causing it to shift or wobble on the roller conveyor. This affects the stability of the gas box placement and may even lead to collisions and damage, posing a safety hazard. Therefore, there is an urgent need for a gas box filling and leak detection device with an automatic linkage locking function. Utility Model Content

[0004] This invention solves the problems mentioned in the background art by setting a limiting and locking mechanism, so that when the slide moves to the point of contact with the limiting member, the push plate retracts the elastic support plate assembly and the locking rod falls into the locking cylinder under its own weight to achieve automatic locking.

[0005] The technical solution of this utility model is implemented as follows: a gas box inflation and leak detection device, including a vacuum box, and further comprising: The conveying mechanism includes a first roller conveyor and a second roller conveyor respectively disposed inside and outside the vacuum box, and a slide that can move on the first roller conveyor and the second roller conveyor; The limiting and locking mechanism includes a limiting member disposed at the outer end of the second roller conveyor, a locking cylinder and a push plate disposed at the top of the locking cylinder, a guide cylinder disposed on the slide, a locking rod that can slide vertically along the guide cylinder, and an elastic support plate assembly disposed at the bottom of the slide. When the slide moves to the contact limiter, the push plate retracts the elastic support plate assembly, and the locking rod falls into the locking cylinder under its own weight.

[0006] The present invention is further configured such that the limiting member is a limiting block fixedly connected to the second roller conveyor, and a flexible buffer pad is provided on the side facing the slide.

[0007] The present invention is further configured such that the locking cylinder is a flared guide structure that is wider at the top and narrower at the bottom.

[0008] The present invention is further configured such that the elastic support plate assembly includes a support plate that can slide laterally and an elastic reset member for driving the support plate to reset.

[0009] The present invention is further configured such that the tray forms a sliding guide engagement with the groove opened at the bottom of the slide block through the guide rib.

[0010] The present invention is further configured such that the elastic reset element is a reset spring.

[0011] The present invention is further provided that the top of the locking rod is provided with a limiting head to prevent the locking rod from falling out.

[0012] By adopting the above technical solution, the beneficial effects that this utility model can achieve are: 1. By using the push plate, elastic support plate assembly and locking rod in conjunction with their own weight, the slide can be automatically locked when it is in place, which improves the ease of operation and work efficiency of the equipment.

[0013] 2. By combining the limit block with the flexible buffer pad and the locking cylinder with the trumpet-shaped guide structure, the slide block is buffered and the locking rod is smoothly placed, which improves the stability of the slide block positioning and locking process.

[0014] 3. The structure of sliding cooperation between the support plate and the guide rib, and elastic reset by the return spring, ensures smooth and accurate operation of the elastic support plate assembly, thereby improving the overall stability and service life of the limit locking mechanism. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a utility model Figure 1 A magnified structural diagram of part A; Figure 3 This is a first cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the second cross-sectional structure of this utility model.

[0016] The attached figures are labeled as follows: 1. Vacuum box; 2. Conveying mechanism; 20. First roller conveyor; 21. Second roller conveyor; 22. Slide; 3. Limiting and locking mechanism; 30. Limiting component; 31. Locking cylinder; 32. Push plate; 33. Guide cylinder; 34. Locking rod; 35. Elastic support plate assembly; 350. Support plate; 351. Elastic reset component; 4. Flexible buffer pad; 5. Guide rib; 6. Limiting head. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-4 : Example 1:

[0018] This embodiment provides a gas box inflation and leak detection device, including a vacuum box 1, and further comprising: The conveying mechanism 2 includes a first roller conveyor 20 and a second roller conveyor 21 disposed inside and outside the vacuum box 1, and a slide 22 that can move on the first roller conveyor 20 and the second roller conveyor 21. The limiting and locking mechanism 3 includes a limiting member 30, a locking cylinder 31 and a push plate 32 on the top of the locking cylinder 31, a guide cylinder 33 on the slide block 22, a locking rod 34 that can slide vertically along the guide cylinder 33, and an elastic support plate assembly 35 on the bottom of the slide block 22. When the slide block 22 moves to the contact limit member 30, the push plate 32 retracts the elastic support plate assembly 35, and the locking rod 34 falls into the locking cylinder 31 under its own weight.

[0019] The core of this air box inflation and leak detection device lies in the automatic locking of the slide block 22 after it is in place through the limit locking mechanism 3.

[0020] Vacuum chamber 1 is a sealed cavity structure used to form the sealed testing environment required for gas box leak detection. An opening is reserved on one side for the slide 22 to enter and exit. Helium filling pipeline is laid inside, and a control cabinet is set up on the outside. The control cabinet is electrically connected to the helium filling pipeline to control the filling of detection gas and the detection process.

[0021] The conveying mechanism 2 includes a first roller conveyor 20, a second roller conveyor 21, and a slide 22. The first roller conveyor 20 is installed inside the vacuum chamber 1, and the second roller conveyor 21 is installed outside the vacuum chamber 1. The first roller conveyor 20 and the second roller conveyor 21 are at the same height, and their ends are connected to each other to form a continuous conveying path for the slide 22 to move smoothly. The first roller conveyor 20 and the second roller conveyor 21 are both non-powered roller conveyors. The two ends of their roller bodies are connected to the corresponding support frames through bearing seats, and the roller bodies can rotate freely around their own axes. The slide 22 is a plate-shaped bearing structure. Its bottom is in contact with the upper surface of the roller bodies of the first roller conveyor 20 and the second roller conveyor 21. It can be moved back and forth along the length of the roller conveyor under manual pushing to carry the gas box to be tested and drive the gas box in and out of the vacuum chamber 1. The edge of the upper surface of the slide 22 is fixed with a handle by bolts or welding. The handle is a rod-shaped structure and is arranged vertically or horizontally to facilitate the push and pull of the slide 22 along the roller conveyor by the staff.

[0022] The limiting and locking mechanism 3 is a key structure for achieving automatic locking of the slide 22. It includes a limiting component 30, a locking cylinder 31, a push plate 32, a guide cylinder 33, a locking rod 34, and an elastic support plate assembly 35. The limiting component 30 is a limiting block made of rigid material. It is bolted to the support base at the end of the second roller conveyor 21 away from the vacuum box 1 and is located on the outer side of the end of the second roller conveyor 21. A flexible buffer pad 4 is fixed to the side of the limiting block facing the slide 22 by adhesive bonding. The flexible buffer pad 4 is used to reduce the impact force when the slide 22 contacts the limiting block. The locking cylinder 31 is a hollow cylindrical structure with its axis set vertically. It is fixed to the support base of the second roller conveyor 21 by welding and is located between the limiting block and the second roller conveyor 21. The overall shape of the locking cylinder 31 is a trumpet shape that is wider at the top and narrower at the bottom. The upper opening size is larger than the lower cavity size, which facilitates the smooth entry of the locking rod 34. The push plate 32 is a flat plate structure, which is horizontally set on the top end face of the locking cylinder 31 and fixedly connected to the locking cylinder 31 by welding. One end of the push plate 32 extends in the direction of movement of the slide 22, and is used to contact the elastic support plate assembly 35 and push it back when the slide 22 approaches.

[0023] The guide cylinder 33 is a hollow cylindrical structure with its axis set vertically. It is fixed to a preset position on the upper surface of the slide block 22 by welding or bolting. The internal cavity of the guide cylinder 33 is a smooth cylindrical surface, which provides vertical sliding guidance for the locking rod 34. The locking rod 34 is a cylindrical rod that passes through the internal cavity of the guide cylinder 33 and can slide freely vertically along the axis of the guide cylinder 33. The top of the locking rod 34 is integrally formed with a limiting head 6. The limiting head 6 can be a disc-shaped structure with a diameter larger than the inner diameter of the guide cylinder 33, or a spherical structure with an outer diameter larger than the inner diameter of the guide cylinder 33, which is used to prevent the locking rod 34 from completely disengaging from the lower part of the guide cylinder 33.

[0024] The elastic pallet assembly 35 includes a pallet 350 and an elastic reset member 351. The pallet 350 is a long strip plate that is arranged laterally at the bottom of the slide block 22. The bottom of the slide block 22 has a laterally extending slot corresponding to the installation position of the pallet 350. Vertically arranged guide ribs 5 are integrally formed on both sides of the pallet 350. The guide ribs 5 are embedded in the slot at the bottom of the slide block 22, so that the pallet 350 and the slot form a sliding fit. The pallet 350 can slide laterally along the length direction of the slot. The guide ribs 5 and the slot form a limiting sliding structure, which can constrain the pallet 350 to move only along the set lateral trajectory. The vibration and displacement generated by the frequent reciprocating movement of the slide block 22 on the roller conveyor will not cause the pallet 350 to deviate, become loose or move abnormally, and can maintain the sliding fit accuracy for a long time. The elastic reset element 351 is a reset spring, which is arranged along the sliding direction of the support plate 350. One end of the reset spring is embedded in the mounting groove at one end of the support plate 350, and the other end is embedded in the mounting groove at the bottom end of the slide block 22. The reset spring is always in a pre-stretched state, providing the support plate 350 with a reset force extending downward toward the guide cylinder 33, so that the support plate 350 is normally extended and located directly below the guide cylinder 33, which is used to support the bottom end of the locking rod 34, so that the locking rod 34 is suspended inside the guide cylinder 33 and does not interfere with the structure of the locking cylinder 31. The bottom of the slide block 22 is provided with a dustproof cover around the groove and the elastic reset member 351. The dustproof cover is a cover structure and can be detachably fixed to the bottom surface of the slide block 22 by fastening bolts. The dustproof cover covers the area of ​​the groove and the elastic reset member 351. The end of the cover facing the push plate 32 is provided with a clearance opening. The end of the support plate 350 extends outward from the clearance opening, which can prevent dust and debris from entering the movement gap and will not interfere with the contact and sliding operation of the support plate 350 and the push plate 32.

[0025] The working process of this technical solution includes a locking process and an unlocking process: During locking, the operator pushes the slide 22 along the second roller conveyor 21 away from the vacuum chamber 1 by the handle. When the slide 22 moves close to the outer end of the second roller conveyor 21, the support plate 350 at the bottom of the slide 22 first contacts the push plate 32 at the top of the locking cylinder 31. As the slide 22 continues to move, the push plate 32 exerts a lateral pushing force on the support plate 350, forcing the support plate 350 to overcome the tension of the return spring and return along the groove at the bottom of the slide 22 away from the guide cylinder 33. When the slide 22 retracts, the support plate 350 moves away from directly below the guide cylinder 33, releasing its support for the bottom of the locking rod 34. When the outer end face of the slide 22 completely contacts the flexible buffer pad 4 on the limit block, the slide 22 stops moving. At this time, the locking rod 34 loses the support of the support plate 350 and falls vertically downward along the inner cavity of the guide cylinder 33 under its own gravity, eventually falling into the inner cavity of the locking cylinder 31, thus locking the slide 22 and preventing the slide 22 from shifting when carrying the air box.

[0026] During unlocking, the operator lifts the limiting head 6 at the top of the locking rod 34, causing the locking rod 34 to slide upward along the guide cylinder 33, so that the bottom of the locking rod 34 disengages from the locking cylinder 31 and returns to below the guide cylinder 33. At this time, the support plate 350 is reset along the groove towards the guide cylinder 33 under the tension of the return spring, and extends back to directly below the guide cylinder 33. The operator releases the locking rod 34, and the bottom of the locking rod 34 falls onto the support plate 350, which supports it again. Then, the operator pushes the slide 22 along the second roller conveyor 21 towards the vacuum box 1 by the handle. The slide 22 drives the air box into the vacuum box 1, completing the unlocking and feeding process.

[0027] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A gas box inflation and leak detection device, comprising a vacuum box (1), characterized in that, Also includes: The conveying mechanism (2) includes a first roller conveyor (20) and a second roller conveyor (21) disposed inside and outside the vacuum box (1), and a slide (22) movable on the first roller conveyor (20) and the second roller conveyor (21). The limiting and locking mechanism (3) includes a limiting member (30) located at the outer end of the second roller conveyor (21), a locking cylinder (31) and a push plate (32) located at the top of the locking cylinder (31), a guide cylinder (33) located on the slide (22), a locking rod (34) that can slide vertically along the guide cylinder (33), and an elastic support plate assembly (35) located at the bottom of the slide (22). When the slide (22) moves to the contact limit member (30), the push plate (32) retracts the elastic support plate assembly (35), and the locking rod (34) falls into the locking cylinder (31) under its own weight.

2. The gas box inflation and leak detection device according to claim 1, characterized in that, The limiting member (30) is a limiting block fixedly connected to the second roller conveyor (21), and a flexible buffer pad (4) is provided on the side facing the slide (22).

3. The gas box inflation and leak detection device according to claim 1, characterized in that, The locking cylinder (31) is a trumpet-shaped guide structure that is wider at the top and narrower at the bottom.

4. The gas box inflation and leak detection device according to claim 1, characterized in that, The elastic tray assembly (35) includes a laterally slidable tray (350) and an elastic reset member (351) for driving the tray (350) to reset.

5. The gas box inflation and leak detection device according to claim 4, characterized in that, The tray (350) forms a sliding guide fit with the slot opened at the bottom of the slide (22) through the guide rib (5).

6. The gas box inflation and leak detection device according to claim 4, characterized in that, The elastic reset element (351) is a reset spring.

7. The gas box inflation and leak detection device according to claim 1, characterized in that, The top of the locking rod (34) is provided with a limiting head (6) to prevent the locking rod (34) from coming out.

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