High vacuum pumping device for interlayer of low-temperature gas cylinder

Abstract

The utility model relates to the technical field of low-temperature gas cylinder processing, in particular to a high-vacuum pumping device for a low-temperature gas cylinder interlayer, which comprises a ceiling, a valve component is arranged at the top of the ceiling, a base is fixedly connected to the bottom of the ceiling, a mounting seat at the bottom is pushed by a telescopic arm to move downwards, and then a sealing tank pushes a sealing valve downwards to be communicated with the sealing valve. An outer side sealing ring of the sealing valve abuts against an opening in the bottom of the sealing tank, the problem of gas leakage during gas replacement can be avoided, at the moment, the replacement valve is controlled to be started and stopped, then gas replacement is conducted through the pump body, the gas cylinder body is vacuumized, and then gas in the nitrogen tank and gas in the gas cylinder body are replaced; meanwhile, the heat insulation layer and the heat insulation film are arranged in the gas cylinder body, the heat insulation layer can be additionally arranged between the outer layer and the inner layer of the gas cylinder through the heat insulation layer and the heat insulation film, and the situation that heat is transmitted through a solid connecting object or a supporting structure, the temperature in the gas cylinder is not uniform, and consequently the performance of the gas cylinder is affected is prevented.

Description

Technical Field

[0001] This utility model relates to the field of cryogenic gas cylinder processing technology, specifically to a vacuum pumping device for the jacket of a cryogenic gas cylinder. Background Technology

[0002] The high-vacuum pumping device for the jacket of cryogenic gas cylinders is mainly used to maintain the thermal insulation performance of cryogenic gas cylinders. By drawing a high vacuum in the jacket of the gas cylinder, heat conduction is reduced, thereby ensuring the temperature of the liquid gas inside the gas cylinder. During the vacuuming process of the jacket of cryogenic gas cylinders, improper design or material problems can easily create a heat transfer channel, forming thermal bridges that lead to uneven temperature inside the gas cylinder, thus affecting its performance. To address this, we propose a high-vacuum pumping device for the jacket of cryogenic gas cylinders. Utility Model Content

[0003] The purpose of this invention is to provide a high-vacuum pumping device for the jacket of a cryogenic gas cylinder to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a vacuum pumping device for a low-temperature gas cylinder jacket, including a roof, a valve assembly at the top of the roof, a base fixedly connected to the bottom of the roof, a clamping seat fixedly connected to the top of the base, and a tank assembly on the inner side of the clamping seat.

[0005] The valve assembly includes a telescopic arm and a sealing tank. The bottom of the telescopic arm is fixedly connected to a mounting base. The mounting base has three opening slots, and each opening slot has a rotatable clamping plate installed through a connecting shaft. Each clamping plate has a connecting rod on its top, and the other end of each connecting rod is connected to the sealing tank.

[0006] The top of the canopy is equipped with a recovery tank and a nitrogen tank on the front and back sides, respectively. Both the recovery tank and the nitrogen tank have connecting pipes on their inner sides, and the connecting pipes have displacement valves on their outer sides. The connecting pipes are connected to the sealed tank.

[0007] The tank assembly includes a gas cylinder body, a top cover fixedly connected to the top of the gas cylinder body, a sealing valve on the top of the top cover, and a handle on the outside of the sealing valve.

[0008] The cylinder body has a vacuum layer inside, a heat insulation layer inside the vacuum layer, and a heat insulation film inside the inner layer of the cylinder body.

[0009] The clamping base has springs fixedly connected to both the left and right sides, and clamping blocks are fixedly connected to the inner side of the springs. The clamping blocks are slidably connected to the clamping base.

[0010] The bottom inner side of each clamping plate is fixedly connected with an anti-slip pad.

[0011] This utility model has at least the following beneficial effects:

[0012] The mounting base at the bottom is moved downward by pushing the telescopic arm, and then the sealing tank pushes the sealing valve downward to connect it. The outer sealing ring of the sealing valve abuts against the opening at the bottom of the sealing tank, which can avoid gas leakage during gas replacement. At this time, by controlling the start and stop of the replacement valve, the gas is replaced by the pump body to perform a vacuum operation on the gas cylinder body. Then, the gas inside the nitrogen tank is replaced with the gas inside the gas cylinder body to complete the vacuum operation. At the same time, the gas cylinder body is equipped with a heat insulation layer and a heat insulation film. By setting the heat insulation layer and the heat insulation film, a heat insulation layer can be added between the outer and inner layers of the gas cylinder to prevent heat from being transferred through solid connectors or support structures, causing uneven temperature inside the gas cylinder, thereby affecting its performance. Attached Figure Description

[0013] Figure 1 This is a perspective view of the present utility model;

[0014] Figure 2 This is a right view of the present invention;

[0015] Figure 3 This is a three-dimensional view of the valve assembly structure of this utility model;

[0016] Figure 4 This is an exploded view of the internal structure of the valve assembly of this utility model;

[0017] Figure 5 This is a cross-sectional view of the internal structure of the tank body of this utility model;

[0018] Figure 6 This is a cross-sectional view of the internal structure of the base of this utility model.

[0019] In the diagram: 1. Canopy; 2. Base; 3. Valve assembly; 301. Recovery tank; 302. Nitrogen tank; 303. Replacement valve; 304. Connecting pipeline; 305. Telescopic arm; 306. Mounting seat; 307. Clamping plate; 308. Sealing tank; 309. Connecting rod; 310. Connecting shaft; 311. Anti-slip pad; 4. Tank assembly; 401. Gas cylinder body; 402. Top cover; 403. Sealing valve; 404. Handle; 405. Thermal insulation layer; 406. Vacuum layer; 407. Thermal insulation film; 5. Clamping seat; 6. Spring; 7. Clamping block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 6 :

[0022] Example 1

[0023] This utility model provides a technical solution: a vacuum pumping device for a low-temperature gas cylinder jacket, including a roof 1, a valve assembly 3 on the top of the roof 1, a base 2 fixedly connected to the bottom of the roof 1, a clamping seat 5 fixedly connected to the top of the base 2, and a tank assembly 4 on the inner side of the clamping seat 5.

[0024] The valve assembly 3 includes a telescopic arm 305 and a sealing tank 308. The bottom of the telescopic arm 305 is fixedly connected to a mounting base 306. The mounting base 306 is provided with three opening slots. Each opening slot is provided with a rotatable clamping plate 307 through a connecting shaft 310. Each clamping plate 307 is provided with a connecting rod 309 on its top. The other end of each connecting rod 309 is connected to the sealing tank 308.

[0025] The mounting base 306 at the bottom is moved downward by the telescopic arm 305. Then, the sealing tank 308 pushes the sealing valve 403 downward to connect it. The outer sealing ring of the sealing valve 403 abuts against the opening at the bottom of the sealing tank 308, which can avoid gas leakage during gas replacement. At this time, by controlling the start and stop of the replacement valve 303, gas replacement is carried out by the pump body to perform a vacuum operation on the gas cylinder body 401. Then, the gas inside the nitrogen tank 302 replaces the gas inside the gas cylinder body 401 to complete the vacuum operation. At the same time, the gas cylinder body 401 is provided with a heat insulation layer 405 and a heat insulation film 407. By setting the heat insulation layer 405 and the heat insulation film 407, a heat insulation layer 405 can be added between the outer and inner layers of the gas cylinder to prevent heat from being transferred through solid connectors or support structures, causing uneven temperature inside the gas cylinder, thereby affecting its performance.

[0026] A recovery tank 301 and a nitrogen tank 302 are respectively installed on the front and rear sides of the top of the canopy 1. A connecting pipe 304 is installed inside the recovery tank 301 and the nitrogen tank 302. A displacement valve 303 is installed outside the connecting pipe 304. The connecting pipe 304 is connected to the sealing tank 308. The recovery tank 301 is used to recover the gas inside the gas cylinder body 401, and the nitrogen tank 302 is used to fill the heat insulation film 407 to form a vacuum environment.

[0027] The tank assembly 4 includes a gas cylinder body 401, a top cover 402 is fixedly connected to the top of the gas cylinder body 401, a sealing valve 403 is provided on the top of the top cover 402, a handle 404 is provided on the outside of the sealing valve 403, and the sealing valve 403 is used to seal the gas cylinder body 401.

[0028] A vacuum layer 406 is provided inside the gas cylinder body 401. A heat insulation layer 405 is provided inside the vacuum layer 406. A heat insulation film 407 is provided inside the inner layer of the gas cylinder body 401. The heat insulation layer 405 and the heat insulation film 407 prevent heat from being transferred through solid connectors or support structures, which would cause uneven temperature inside the gas cylinder and thus affect its performance.

[0029] Example 2

[0030] Springs 6 are fixedly connected to both the left and right sides of the clamping seat 5. Clamping blocks 7 are fixedly connected to the inner side of each spring 6. The clamping blocks 7 are slidably connected to the clamping seat 5. The clamping blocks 7 are connected to the springs 6 through the springs 6. When the gas cylinder body 401 is pushed into the clamping seat 5, the gas cylinder body 401 pushes the clamping blocks 7 outward, which causes the springs 6 and clamping blocks 7 to retract. At the same time, the springs 6 will release outward after being subjected to pressure, thus pushing the clamping blocks 7 outward and contacting the outer side of the gas cylinder body 401 to fix the gas cylinder body 401.

[0031] Anti-slip pads 311 are fixedly connected to the bottom inner side of the clamping plate 307. The anti-slip pads 311 are used to clamp the outer side of the sealing valve 403 to prevent the sealing can 308 from falling off during gas replacement.

[0032] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-vacuum pumping device for the jacket of a cryogenic gas cylinder, comprising: A canopy (1), characterized in that: a valve assembly (3) is provided on the top of the canopy (1), a base (2) is fixedly connected to the bottom of the canopy (1), a clamping seat (5) is fixedly connected to the top of the base (2), and a tank assembly (4) is provided on the inner side of the clamping seat (5). The valve assembly (3) includes a telescopic arm (305) and a sealing tank (308). The bottom of the telescopic arm (305) is fixedly connected to a mounting base (306). The mounting base (306) is provided with three opening slots. Each opening slot is provided with a rotatable clamping plate (307) through a connecting shaft (310). Each clamping plate (307) is provided with a connecting rod (309) at its top. The other end of each connecting rod (309) is connected to the sealing tank (308).

2. The high-vacuum pumping device for the cryogenic gas cylinder jacket according to claim 1, characterized in that: The top of the canopy (1) is provided with a recovery tank (301) and a nitrogen tank (302) on the front and rear sides respectively. The inner side of the recovery tank (301) and the nitrogen tank (302) are provided with connecting pipes (304), and the outer side of the connecting pipes (304) is provided with a displacement valve (303). The connecting pipes (304) are connected to the sealed tank (308).

3. The high-vacuum pumping device for the cryogenic gas cylinder jacket according to claim 1, characterized in that: The tank assembly (4) includes a gas cylinder body (401), a top cover (402) is fixedly connected to the top of the gas cylinder body (401), a sealing valve (403) is provided on the top of the top cover (402), and a handle (404) is provided on the outside of the sealing valve (403).

4. The high-vacuum pumping device for the cryogenic gas cylinder jacket according to claim 3, characterized in that: The gas cylinder body (401) has a vacuum layer (406) inside, and a heat insulation layer (405) is provided on the inner side of the vacuum layer (406). The inner layer of the gas cylinder body (401) is provided with a heat insulation film (407).

5. The high-vacuum pumping device for the cryogenic gas cylinder jacket according to claim 1, characterized in that: Springs (6) are fixedly connected to both the left and right sides of the clamping seat (5), and clamping blocks (7) are fixedly connected to the inner side of each spring (6). The clamping blocks (7) are slidably connected to the clamping seat (5).

6. The high-vacuum pumping device for the cryogenic gas cylinder jacket according to claim 1, characterized in that: Anti-slip pads (311) are fixedly connected to the bottom inner side of each clamping plate (307).

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