Liquid helium dewar and liquid helium transfer tube sealing connection device

Abstract

The utility model discloses a liquid helium duva and liquid helium transfusion pipe sealing connecting device, it includes: fixed subassembly, movable assembly and fastening assembly, the fixed subassembly includes fixed pipe, inner pipeline and inner snap ring, the top fixed connection of fixed pipe has inner pipeline, the circumferential surface of inner pipeline is fixedly connected with inner snap ring. Through setting fixed subassembly, movable assembly, fastening assembly and transfusion pipeline, transfusion pipeline is inserted into movable assembly, and makes the bottom of transfusion pipeline and is clamped between the card column and inner pipeline, utilizes the outer block and inner snap ring to fix and seal to transfusion pipeline inner wall, then moves fastening ring to the connecting part, carries out inflation to gasbag, utilizes the inflation of gasbag and expands to the outside seal of lower pipe body and internal transfusion pipeline, and continuously extrudes internal transfusion pipeline, makes it tightly and tightly adhere to inner pipeline, and then fixed, greatly improves the sealing property of connecting part.

Description

Technical Field

[0001] This utility model relates to the field of cryogenic liquid technology, and in particular to a liquid helium Dewar and a liquid helium infusion pipe sealing connection device. Background Technology

[0002] Liquid hydrogen and liquid helium have saturation temperatures below 20K. These cryogenic fluids require specialized delivery devices for transport. The delivery tube typically consists of an inner tube and an outer tube, with the space between them called a "jacket." The jacket is wrapped with multiple layers of insulating material, and a high vacuum environment is created within it. The inner tube is used to transport media such as liquid hydrogen and liquid helium, while the outer tube is used to establish a vacuum jacket with the inner tube. A liquid helium dewar is a container for holding liquid helium. The container is sealed when storing liquid helium, and a connecting device is usually installed on the top of the container. The delivery tube is connected to the connecting device for transport.

[0003] However, small gaps can easily exist between the infusion tubing and the connecting device, resulting in insufficient sealing of the connection, air leakage, and causing delivery safety accidents. Utility Model Content

[0004] The purpose of this invention is to provide a sealing connection device for liquid helium Dewar and liquid helium infusion tubing. The infusion tubing is inserted into the movable component, and the bottom of the infusion tubing is locked between the locking post and the inner tubing. The inner wall of the infusion tubing is fixed and sealed by the outer locking block and the inner locking ring. Then, the fastening ring is moved to the connection point, and the air bladder is inflated. The expansion of the inflated air bladder seals the lower tube body and the inner infusion tubing on the outside, and continuously squeezes the inner infusion tubing to make it tightly fit with the inner tubing, thereby fixing it and greatly improving the sealing performance of the connection point.

[0005] To achieve the above objectives, a sealing connection device for a liquid helium Dewar and a liquid helium infusion tube is provided, comprising: a fixed component, a movable component, and a fastening component. The fixed component includes a fixed tube, an inner pipe, and an inner retaining ring. The top of the fixed tube is fixedly connected to the inner pipe, and the inner retaining ring is fixedly connected to the circumferential surface of the inner pipe. The movable component includes an upper tube body, a lower tube body, a bottom hole, a retaining post, and an outer retaining block. The bottom of the upper tube body is fixedly connected to the lower tube body, and the bottom of the lower tube body has a bottom hole. The inner bottom surface of the lower tube body is fixedly connected to a retaining post, and the top of the retaining post is fixedly connected to an outer retaining block. Multiple retaining posts and outer retaining blocks are provided and evenly distributed inside the lower tube body. The fastening component includes a fastening ring, an inner groove, an air bladder, an inflation tube, and a valve. The inner circumferential surface of the fastening ring has an inner groove, and an air bladder is engaged inside the inner groove. The air bladder is annular, and an inflation tube is fixedly connected to the circumferential surface of the air bladder. A valve is fixedly connected to the inflation tube.

[0006] According to the liquid helium Dewar and liquid helium infusion tube sealing connection device, the bottom of the fixed tube is fixedly connected to the Dewar, the infusion tube is inserted into the inside of the upper tube body, and the bottom of the infusion tube is located between the lower tube body and the locking post.

[0007] According to the liquid helium Dewar and liquid helium infusion tubing sealing connection device, the lower tube body is made of wear-resistant soft rubber.

[0008] According to the liquid helium Dewar and liquid helium infusion tubing sealing connection device, the locking pin is located outside the inner locking ring, and the inner locking ring is located above the outer locking block.

[0009] According to the liquid helium Dewar and liquid helium infusion tubing sealing connection device, the fastening ring is threadedly connected to both the fixed tube and the upper tube body.

[0010] According to the liquid helium Dewar and liquid helium infusion tube sealing connection device, the airbag is located on the outside of the lower tube body, and the inner circumferential surface of the airbag is provided with anti-slip texture.

[0011] According to the liquid helium Dewar and liquid helium infusion tubing sealing connection device, the inflation tube passes through the fastening ring, and the valve is located on the outside of the fastening ring.

[0012] According to the liquid helium Dewar and liquid helium infusion tube sealing connection device, the bottom of the bottom hole is inclined, and the cross-section of the inner retaining ring and the outer retaining block are both wedge-shaped.

[0013] The above solution has the following advantages: By setting up a fixed component, a movable component, a fastening component, and an infusion tubing, the infusion tubing is inserted into the movable component, and the bottom of the infusion tubing is locked between the locking post and the inner tubing. The inner wall of the infusion tubing is fixed and sealed by the outer locking block and the inner locking ring. Then, the fastening ring is moved to the connection point, and the airbag is inflated. The inflation of the airbag seals the lower tube body and the inner infusion tubing on the outside, and continuously squeezes the inner infusion tubing to make it fit tightly against the inner tubing, thereby fixing it and greatly improving the sealing performance of the connection point.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a front view of a liquid helium Dewar and a liquid helium infusion tube sealing connection device according to the present invention;

[0017] Figure 2This is a cross-sectional view of the fixing component of a liquid helium Dewar and a liquid helium infusion tube sealing connection device according to the present invention;

[0018] Figure 3 This is a cross-sectional view of the movable component of a liquid helium Dewar and a liquid helium infusion tube sealing connection device according to the present invention;

[0019] Figure 4 This is a cross-sectional view of the fastening components of a liquid helium Dewar and a liquid helium infusion tube sealing connection device according to the present invention.

[0020] Legend:

[0021] 1. Fixed component; 2. Moving component; 3. Fastening component; 4. Infusion tubing; 101. Fixed tube; 102. Inner tube; 103. Inner retaining ring; 201. Upper tube body; 202. Lower tube body; 203. Bottom hole; 204. Clamping post; 205. Outer retaining block; 301. Fastening ring; 302. Inner groove; 303. Airbag; 304. Inflation tube; 305. Valve. Detailed Implementation

[0022] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0023] Reference Figure 1-4 This utility model provides a sealing connection device for a liquid helium Dewar and a liquid helium infusion tube, which includes: a fixed component 1, a movable component 2, and a fastening component 3. The fixed component 1 includes a fixed tube 101, an inner pipe 102, and an inner retaining ring 103. The top of the fixed tube 101 is fixedly connected to the inner pipe 102, and the inner retaining ring 103 is fixedly connected to the circumferential surface of the inner pipe 102.

[0024] The active component 2 includes an upper tube 201, a lower tube 202, a bottom hole 203, a locking post 204, and an outer locking block 205. The lower tube 202 is fixedly connected to the bottom of the upper tube 201. The lower tube 202 is made of wear-resistant soft rubber. The bottom of the lower tube 202 is provided with a bottom hole 203. The locking post 204 is fixedly connected to the inner bottom surface of the lower tube 202. The locking post 204 is located outside the inner locking ring 103. The outer locking block 205 is fixedly connected to the top of the locking post 204. There are multiple locking posts 204 and outer locking blocks 205, which are evenly distributed inside the lower tube 202.

[0025] The fastening assembly 3 includes a fastening ring 301, an inner groove 302, an air bladder 303, an inflation tube 304, and a valve 305. The fastening ring 301 is threadedly connected to both the fixing tube 101 and the upper tube body 201. The fastening ring 301 connects the fixing tube 101 to the upper tube body 201 and provides an initial seal using the threads. The inner circumferential surface of the fastening ring 301 has an inner groove 302, and the air bladder 303 is snapped into the inside of the inner groove 302. The air bladder 303 is annular and located on the outside of the lower tube body 202. The inner circumferential surface of the air bladder 303 has anti-slip textures, which not only improves the friction of the connection but also... It can also improve the stability of the connection. An inflation tube 304 is fixedly connected to the circumferential surface of the airbag 303. A valve 305 is fixedly connected to the inflation tube 304. The inflation tube 304 passes through the fastening ring 301. The valve 305 is located on the outside of the fastening ring 301. When the airbag 303 is inflated using the inflation tube 304, the airbag 303 expands, thereby squeezing the lower tube 202 inward. The lower tube 202 squeezes the outer wall of the infusion pipeline 4. The inner wall of the infusion pipeline 4 is tightly attached to the inner pipeline 102, and further sealed under the action of the inner retaining ring 103 and the outer retaining block 205, thus forming a sealed environment.

[0026] The bottom of the fixed tube 101 is fixedly connected to the Dewar. An infusion tube 4 is inserted into the inside of the upper tube 201. The bottom of the infusion tube 4 is located between the lower tube 202 and the locking post 204. The bottom of the bottom hole 203 is inclined to facilitate the insertion of the inner tube 102 into the lower tube 202. The cross-sections of the inner locking ring 103 and the outer locking block 205 are both wedge-shaped to facilitate the locking and fixing of the inner wall of the infusion tube 4. The inner locking ring 103 is located above the outer locking block 205 and forms a locking seal with the infusion tube 4.

[0027] Working principle: The bottom of the fixed tube 101 is fixedly connected to the Dewar. The infusion tubing 4 is inserted into the movable component 2, and the bottom of the infusion tubing 4 is positioned between the lower tube body 202 and the locking post 204. The outer locking block 205 forms a locking seal with the infusion tubing 4. Then, the movable component 2 is inserted into the fixed tube 101, so that the inner tube 102 is inserted into the lower tube body 202. The inner tube 102 is located inside the locking post 204. The inner locking ring 103 forms a locking seal with the infusion tubing 4 again. Then, the fastening ring 301 is rotated to connect the fixed tube 101 to the upper tube body 201. The air bladder 303 is inflated using the inflation tube 304. The air bladder 303 expands, thereby squeezing the lower tube body 202 inward. The lower tube body 202 squeezes the outer wall of the infusion tubing 4. The inner wall of the infusion tubing 4 is tightly attached to the inner tube 102, and further sealed by the action of the inner locking ring 103 and the outer locking block 205, thus forming a sealed environment.

[0028] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A sealing connection device for a liquid helium Dewar and a liquid helium delivery tube, characterized in that, include: The assembly comprises a fixed component (1), a movable component (2), and a fastening component (3). The fixed component (1) includes a fixed tube (101), an inner pipe (102), and an inner retaining ring (103). The top of the fixed tube (101) is fixedly connected to the inner pipe (102), and the inner retaining ring (103) is fixedly connected to the circumferential surface of the inner pipe (102). The movable component (2) includes an upper tube body (201), a lower tube body (202), a bottom hole (203), a retaining post (204), and an outer retaining block (205). The bottom of the upper tube body (201) is fixedly connected to the lower tube body (202), and the bottom of the lower tube body (202) is provided with a bottom hole (203). The inner bottom surface of the lower tube body (202) is fixedly connected to a retaining post (205). 204), the top of the locking post (204) is fixedly connected to an outer locking block (205). There are multiple locking posts (204) and outer locking blocks (205), which are evenly distributed inside the lower tube body (202). The fastening assembly (3) includes a fastening ring (301), an inner groove (302), an air bladder (303), an inflation tube (304), and a valve (305). The inner circumferential surface of the fastening ring (301) is provided with an inner groove (302). An air bladder (303) is locked inside the inner groove (302). The air bladder (303) is annular. An inflation tube (304) is fixedly connected to the circumferential surface of the air bladder (303). A valve (305) is fixedly connected to the inflation tube (304).

2. The sealing connection device for a liquid helium Dewar and a liquid helium delivery pipe according to claim 1, characterized in that, The bottom of the fixed tube (101) is fixedly connected to the Dewar, and an infusion pipe (4) is inserted into the inside of the upper tube (201). The bottom of the infusion pipe (4) is located between the lower tube (202) and the locking post (204).

3. The sealing connection device for a liquid helium Dewar and a liquid helium delivery pipe according to claim 1, characterized in that, The lower tube (202) is made of wear-resistant soft rubber.

4. The sealing connection device for a liquid helium Dewar and a liquid helium delivery pipe according to claim 1, characterized in that, The locking pin (204) is located outside the inner locking ring (103), and the inner locking ring (103) is located above the outer locking block (205).

5. The sealing connection device for a liquid helium Dewar and a liquid helium delivery pipe according to claim 1, characterized in that, The fastening ring (301) is threadedly connected to the fixed tube (101) and the upper tube body (201).

6. The sealing connection device for a liquid helium Dewar and a liquid helium delivery pipe according to claim 1, characterized in that, The airbag (303) is located on the outside of the lower tube (202), and anti-slip texture is provided on the inner circumferential surface of the airbag (303).

7. The sealing connection device for a liquid helium Dewar and a liquid helium delivery pipe according to claim 1, characterized in that, The inflation tube (304) passes through the fastening ring (301), and the valve (305) is located on the outside of the fastening ring (301).

8. The sealing connection device for a liquid helium Dewar and a liquid helium delivery pipe according to claim 1, characterized in that, The bottom of the bottom hole (203) is inclined, and the cross-sections of the inner retaining ring (103) and the outer retaining block (205) are both wedge-shaped.

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