CN219735005U

CN219735005U - Liquid nitrogen cryostat connects

Info

Publication number: CN219735005U
Application number: CN202320927865.7U
Authority: CN
Inventors: 王刘星
Original assignee: Tianjin Duowei Laibo Technology Co ltd
Current assignee: Tianjin Duowei Laibo Technology Co ltd
Priority date: 2023-04-23
Filing date: 2023-04-23
Publication date: 2023-09-22
Anticipated expiration: 2033-04-23

Abstract

The utility model discloses a liquid nitrogen cryostat joint, comprising: the upper part of the lower shell is welded with a buffer shell, cavities are formed in the buffer shell and the lower shell, the lower shell and the buffer shell are communicated with each other, and the upper part of the buffer shell is fixedly connected with a first connecting pipe; the main joint, the main joint is connected with first connecting pipe through the screw thread, through having lower part casing and buffering casing, the inside of buffering casing and lower part casing all is equipped with the cavity, and the inside of lower part casing and buffering casing communicates each other, can play the purpose of buffering cavity, and the second connecting pipe has the pressure limiting valve through threaded connection, can play the pressure release effect, prevents that pressure from too big causing explosion or leaking.

Description

Liquid nitrogen cryostat connects

Technical Field

The utility model relates to the technical field of joints, in particular to a liquid nitrogen cryostat joint.

Background

The joint of the liquid nitrogen thermostat in the prior art, such as CN103277612B, discloses a liquid nitrogen transmission device, which is provided with a joint, a low-temperature-resistant silicone tube and a clamping ring; one end of the connector is provided with threads, and the other end of the connector is a butt end; the surface of the low-temperature-resistant silica gel tube is provided with a heat absorption coating, and the end of the low-temperature-resistant silica gel tube is a butt end; the butt end of the joint is contacted with the butt end of the low-temperature-resistant silica gel tube; the snap ring is sleeved at the contact part of the butt end of the joint and the butt end of the low-temperature-resistant silicone tube.

The above patent, although solving the problem posed by it, is prone to explosion and leakage when the pressure is too high, and therefore the present utility model proposes a liquid nitrogen cryostat joint.

Disclosure of Invention

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:

a liquid nitrogen cryostat coupling comprising: the upper part of the lower shell is welded with a buffer shell, the buffer shell and the inside of the lower shell are respectively provided with a cavity, the inside of the lower shell is communicated with the inside of the buffer shell, and the upper part of the buffer shell is fixedly connected with a first connecting pipe; the main joint is connected with the first connecting pipe through threads and comprises a first pipe body, and a first annular clamping groove and a second annular clamping groove are formed in the first pipe body.

Preferably, the lower end of the first pipe body is provided with a threaded connecting pipe, and the upper part of the first pipe body is provided with a liquid inlet.

Preferably, an annular protruding portion is arranged in the middle of the first pipe body.

Preferably, a second connecting pipe is fixedly connected to the upper portion of the buffer housing, and the second connecting pipe is connected with a pressure limiting valve through threads.

Preferably, the pressure limiting valve comprises a main valve body, and a pressure relief pipe is connected to the right side of the main valve body.

Preferably, the lower part of the pressure relief pipe is connected with a hose connector, and the upper part of the main valve body is connected with a plug through threads.

Preferably, the main valve body is fixedly connected with a hexagonal protruding part, and the lower shell is provided with four bolts.

Preferably, a step part is arranged at the lower part of the lower shell, and a sealing ring is arranged in a clamping groove of the lower shell.

The utility model has at least the following beneficial effects:

according to the utility model, the buffer shell and the buffer shell are provided with the cavities, the lower shell and the buffer shell are mutually communicated, the purpose of buffering the cavity can be achieved, and the second connecting pipe is connected with the pressure limiting valve through threads, so that the pressure relief effect can be achieved, and explosion or leakage caused by overlarge pressure can be prevented.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic view of a first view structure according to the present utility model;

FIG. 2 is a schematic view of a second view angle structure according to the present utility model;

FIG. 3 is a schematic view of a third view angle structure according to the present utility model;

fig. 4 is a schematic structural view of the present utility model.

Reference numerals illustrate:

1. a bolt; 2. a buffer housing; 3. a second connection pipe; 4. a lower housing; 5. a pressure limiting valve; 51. a plug; 52. hexagonal protruding parts; 53. a pressure relief tube; 54. a hose connector; 55. a main valve body; 6. a main joint; 61. a first tube body; 62. an annular protruding portion; 63. a liquid inlet; 64. a threaded connecting pipe; 65. the first annular clamping groove; 66. the second annular clamping groove; 7. a first connection pipe; 8. a seal ring; 9. a step part.

Detailed Description

The following detailed description of embodiments of the present utility model will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present utility model can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.

Referring to fig. 1 to 4, an embodiment of the present utility model provides a liquid nitrogen cryostat joint, comprising: a lower housing 4 and a main joint 6;

wherein, the upper part of the lower shell 4 is welded with the buffer shell 2, the buffer shell 2 and the lower shell 4 are provided with cavities, the lower shell 4 and the buffer shell 2 are communicated with each other, and the upper part of the buffer shell 2 is fixedly connected with a first connecting pipe 7;

the main joint 6 is connected with the first connecting pipe 7 through threads, the main joint 6 comprises a first pipe body 61, and a first annular clamping groove 65 and a second annular clamping groove 66 are formed in the first pipe body 61.

The lower end of the first pipe body 61 is provided with a threaded connecting pipe 64, and the upper part of the first pipe body 61 is provided with a liquid inlet 63, and the liquid inlet 63 is used for connecting liquid nitrogen.

The middle part of the first pipe body 61 is provided with an annular protruding part 62 which is used for being conveniently clamped when being connected with a liquid nitrogen joint.

The upper portion fixedly connected with second connecting pipe 3 of buffering casing 2, second connecting pipe 3 has pressure limiting valve 5 through threaded connection, can play the effect of pressure limiting and pressure release.

The pressure limiting valve 5 comprises a main valve body 55, and a pressure relief pipe 53 is connected to the right side of the main valve body 55 and used for pressure relief.

The lower part of the pressure release pipe 53 is connected with a hose connector 54, the upper part of the main valve body 55 is connected with a plug 51 through threads, and the hose connector 54 is used for connecting a hose.

The main valve body 55 is fixedly connected with a hexagonal boss 52, the lower shell 4 is provided with four bolts 1, and the lower shell 4 is connected to the liquid nitrogen cryostat through the bolts 1.

The lower part of the lower shell 4 is provided with a step part 9, and a sealing ring 8 is arranged in a clamping groove of the lower shell 4 to play a role in sealing.

The working principle of the utility model is as follows: the buffer shell 2 and the buffer shell 2 are provided with the cavities, the interiors of the buffer shell 2 and the lower shell 4 are communicated with each other, the purpose of buffering the cavity can be achieved, and explosion caused by overlarge pressure is prevented;

when in use, the upper part of the buffer shell 2 is fixedly connected with the first connecting pipe 7, the main joint 6 is connected with the first connecting pipe 7 through threads, the first pipe body 61 is provided with the first annular clamping groove 65 and the second annular clamping groove 66, the clamping connection with a liquid nitrogen joint is convenient, and the second connecting pipe 3 is connected with the pressure limiting valve 5 through threads, so that the pressure relief effect can be achieved, and the pressure is prevented from being overlarge.

While the foregoing description illustrates and describes the preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims

1. A liquid nitrogen cryostat coupling comprising:

the liquid nitrogen cryostat comprises a lower shell (4) for connecting a liquid nitrogen cryostat, wherein a buffer shell (2) is welded on the upper part of the lower shell (4), cavities are formed in the buffer shell (2) and the lower shell (4), the lower shell (4) and the buffer shell (2) are mutually communicated, and a first connecting pipe (7) is fixedly connected on the upper part of the buffer shell (2);

the main joint (6), main joint (6) are connected with first connecting pipe (7) through the screw thread, main joint (6) are including first body (61), be equipped with first annular draw-in groove (65) and second annular draw-in groove (66) on first body (61).

2. A liquid nitrogen cryostat joint according to claim 1 wherein: the lower end of the first pipe body (61) is provided with a threaded connecting pipe (64), and the upper part of the first pipe body (61) is provided with a liquid inlet (63).

3. A liquid nitrogen cryostat joint according to claim 1 wherein: an annular protruding portion (62) is arranged in the middle of the first pipe body (61).

4. A liquid nitrogen cryostat joint according to claim 1 wherein: the upper portion of buffering casing (2) fixedly connected with second connecting pipe (3), second connecting pipe (3) are through threaded connection finite pressure valve (5).

5. A liquid nitrogen cryostat joint according to claim 4 wherein: the pressure limiting valve (5) comprises a main valve body (55), and a pressure relief pipe (53) is connected to the right side of the main valve body (55).

6. A liquid nitrogen cryostat joint according to claim 5 wherein: the lower part of the pressure release pipe (53) is connected with a hose connector (54), and the upper part of the main valve body (55) is connected with a plug (51) through threads.

7. A liquid nitrogen cryostat joint according to claim 6 wherein: the main valve body (55) is fixedly connected with a hexagonal protruding portion (52), and the lower shell (4) is provided with four bolts (1).

8. A liquid nitrogen cryostat joint according to claim 1 wherein: the lower part of the lower shell (4) is provided with a step part (9), and a sealing ring (8) is arranged in a clamping groove of the lower shell (4).