CN215000069U

CN215000069U - Corrugated pipe connector for helium pipeline of nuclear magnetic resonance equipment

Info

Publication number: CN215000069U
Application number: CN202120626631.XU
Authority: CN
Inventors: 徐扣锁
Original assignee: Jiangsu Aidi Electromechanical Equipment Industry Co ltd
Current assignee: Jiangsu Aidi Electromechanical Equipment Industry Co ltd
Priority date: 2021-03-26
Filing date: 2021-03-26
Publication date: 2021-12-03
Anticipated expiration: 2031-03-26

Abstract

The utility model discloses a corrugated pipe connector for nuclear magnetic resonance equipment helium pipeline, including bellows body and bellows straight mouthful end, the outer lane of bellows body and bellows straight mouthful end is equipped with the metal mesh cover, bellows straight mouthful end outer lane is equipped with the welding ring, and metal mesh cover tip cover is in welding ring outer lane, and metal mesh cover outer lane is equipped with the clamp, wherein clamp, metal mesh cover, welding ring welded fastening, welding ring end connection connect. The utility model discloses connect each part to adopt separately welding mode, especially the welding of net cover part, even appear taking off and split, can not cause the leakage of helium in the bellows yet. Furthermore, the clamp and the metal net sleeve are contracted tightly in a conical surface, cracks are formed in the welding position, the metal net sleeve cannot be loosened, and the pressure bearing of the corrugated pipe is guaranteed.

Description

Corrugated pipe connector for helium pipeline of nuclear magnetic resonance equipment

Technical Field

The utility model relates to a helium pipeline safety technical field, especially a corrugated pipe connector for nuclear magnetic resonance equipment helium pipeline.

Background

In the nuclear magnetic resonance design, a larger magnetic field can appear in magnetic resonance imaging scanning, equipment can be overheated, and helium can help a superconductor original inside the nuclear magnetic resonance equipment to keep an ultralow temperature state, so that the nuclear magnetic resonance equipment can generate an extremely strong magnetic field, and plays an important role in scanning and imaging. In order to ensure good cooling effect, liquid or gaseous helium needs to be wound and embedded around the magnetizer. The corrugated pipe is required to have smooth inner wall, no trace on welding bead, high smoothness and firm welding of joints. The prior advanced method adopts a stainless steel spiral corrugated pipe, liquid or gaseous helium has good fluidity in the pipe, the corrugated pipe can be bent, has good flexibility and is convenient to wind. In order to increase the bearing capacity of the pipeline, a layer of metal net sleeve is additionally arranged. The conventional process comprises the following steps: the joint is welded with the corrugated pipe, the metal net sleeve and the hoop together, and the net sleeve can be cracked when the bending rate of the corrugated pipe at the joint part of the joint is small, so that the sealing of the corrugated pipe is influenced.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: the utility model aims to solve the technical problem that to prior art not enough, provide a corrugated pipe connector for nuclear magnetic resonance equipment helium pipeline.

In order to solve the technical problem, the utility model discloses a corrugated pipe connector for nuclear magnetic resonance equipment helium pipeline, including bellows body and bellows straight mouthful end, the outer lane of bellows body and bellows straight mouthful end is equipped with the metal mesh cover, bellows straight mouthful end outer lane is equipped with welds the ring, and metal mesh cover tip cover is in welding the ring outer lane, and metal mesh cover outer lane is equipped with the clamp, and wherein clamp, metal mesh cover, weld ring welded fastening weld ring end connection connect.

The utility model discloses in, it is fixed with joint fusion welding to weld the ring.

The utility model discloses in, clamp, metal mesh cover, welding ring add the silk welding and fuse as an organic whole.

The utility model discloses in, bellows body wall thickness 0.3 mm.

The utility model discloses in, weld the ring front end be equipped with the step portion that connects the adaptation.

Has the advantages that: the utility model discloses connect each part to adopt separately welding mode, especially the welding of net cover part, even appear taking off and split, can not cause the leakage of helium in the bellows yet.

Furthermore, the clamp and the metal net sleeve are contracted tightly in a conical surface, cracks are formed in the welding position, the metal net sleeve cannot be loosened, and the pressure bearing of the corrugated pipe is guaranteed.

Drawings

These and/or other advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings and the following detailed description.

Fig. 1 is a structural sectional view.

Detailed Description

Example (b):

as shown in fig. 1, the present embodiment provides a corrugated pipe connector for a helium pipeline of a nuclear magnetic resonance apparatus, including a connector 1, a welding ring 2, a clamp 3, a metal mesh 4, a corrugated pipe body 5a, and a straight opening end 5b of the corrugated pipe;

specifically, including bellows body 1a and bellows straight mouthful end 1b, the outer lane of bellows body 1a and bellows straight mouthful end 1b is equipped with metal mesh cover 4, bellows straight mouthful end outer lane is equipped with

welds ring

2, and 4 tip covers of metal mesh cover are equipped with clamp 3 in the 2 outer lanes of welding ring, and 4 outer lanes of metal mesh cover are equipped with clamp 3, and wherein clamp 3, metal mesh cover 4, weld 2 welded fastening of ring, weld 2 end connection joints 1 of ring.

In this embodiment, the weld ring 2 is fixed to the joint 1 by welding.

In this embodiment, the hoop 3, the metal mesh 4, and the welding ring 2 are welded and fused together.

In this embodiment, the wall thickness of the bellows body is 0.3 mm.

In this embodiment, the front end of the welding ring is provided with a step part adapted to the joint 1.

The bellows joint of this embodiment is when producing, first step: the straight opening end of the corrugated pipe 5 and the welding ring 2 are welded into a whole in a self-fluxing mode, then helium detection is carried out, welding mark treatment is carried out after the welding mark is qualified, polishing is carried out in special magnetic polishing equipment in the later period, the smoothness of the inner surface and the outer surface of the corrugated pipe and the interface is extremely high, and cleaning and drying treatment are carried out.

The second step is that: the joint 1 and the welding ring 2 are subjected to fusion welding, and the ring piece is welded, so that the process operation is simple, and the welding is firm and reliable.

The third step: the metal net sleeve 4 is woven on the outer surface of the corrugated pipe, and the hoop 3 is added outside the metal net sleeve, so that the hoop, the metal net sleeve and the welding ring are welded into a whole by adding wires.

The fourth step: the clamp is extruded on a special tool, and the clamp, the special tool and the conical surface are closed, so that the clamp, the special tool and the conical surface are tightly extruded into a whole.

The bellows joint of the present embodiment includes a first welding point 6, a second welding point 7, and a third welding point 8;

first welding point 6: the connector 1 and the end part of the straight opening end 5b of the corrugated pipe are welded in an argon arc welding mode without adding solder, the welding is carried out in a self-melting mode, the current required by welding is small, the corrugated pipe is not easy to be welded into a hole, the welding is firm, the welding position is smooth, and the welding mark is clean and convenient.

Second welding point 7: the welding position of the joint 1 and the welding ring 2 is respectively provided with a boss, argon arc welding is adopted to melt the bosses, no welding flux is added for self-melting welding, the required current is small, the welding is firm, the welding position is smooth, the welding mark is clean and convenient, and the yellow spot blue phenomenon can not be generated due to overlarge current on the inner wall of the corrugated pipe.

Third welding point 8: the end parts of the hoop 3 and the metal net sleeve 4 are welded and fixed with the welding ring 2 at a third welding point 8.

The utility model provides a thought and method for bellows joint head of nuclear magnetic resonance equipment helium pipeline specifically realize that this technical scheme's method and approach are many, above only the utility model discloses a preferred embodiment should point out, to ordinary technical personnel in this technical field, does not deviate from the utility model discloses under the prerequisite of principle, can also make a plurality of improvements and moist decorations, these improve and moist decorations should also regard as the utility model discloses a protection scope. All the components not specified in the present embodiment can be realized by the prior art.

Claims

1. The utility model provides a corrugated pipe connector for nuclear magnetic resonance equipment helium pipe, its characterized in that, including bellows body (5a) and bellows straight mouthful end (5b), the outer lane of bellows body (5a) and bellows straight mouthful end (5b) is equipped with metal mesh cover (4), bellows straight mouthful end outer lane is equipped with welding ring (2), and metal mesh cover (4) tip cover is in welding ring (2) outer lane, and metal mesh cover (4) outer lane is equipped with clamp (3), wherein clamp (3), metal mesh cover (4), welding ring (2) welded fastening, welding ring (2) end connection connects (1).

2. A bellows joint for a helium pipe of a nuclear magnetic resonance apparatus according to claim 1, characterized in that the weld ring (2) is fixed to the joint (1) by welding.

3. The bellows joint for a helium pipe of a nuclear magnetic resonance apparatus according to claim 1, wherein the clamp (3), the metal mesh (4), and the welding ring (2) are wire-welded together.

4. The bellows joint for a helium tube of a nuclear magnetic resonance apparatus of claim 1, wherein the wall thickness of the bellows body is 0.3 mm.

5. The bellows joint for a helium pipe of a nuclear magnetic resonance apparatus according to claim 1, wherein the front end of the weld ring (2) is provided with a step portion adapted to the joint (1).