CN108306245A - A kind of structural member for realizing cable external shield body contact by seal nipple - Google Patents

Abstract

The invention belongs to the technical field of dual-coaxial signal transmission in the nuclear power industry, and in particular relates to a structural member for realizing the outer shielding connection of cables through sealing joints. The connecting structural part is a T-shaped thin-walled tubular slotted structure, which can be stretched in the circumferential direction of the inner diameter; the sealing joint shell is fastened to the penetrating part shell, and the fastening nut, metal pressing part, rubber seal and connecting structural parts are sequentially set Insert the double coaxial cable, the double coaxial cable is inserted into the sealing joint shell; the rubber seal and the connecting structure are pushed into the sealing joint shell, and the rubber seal is compressed and fastened by the fastening nut and the metal pressing piece, and the force acts on Connect the structural parts so that the wide end face of the connecting structural part is closely connected with the housing of the sealing joint, so that the slotted and thin-walled part of the connecting structural part is deformed and tightly hugged by the double coaxial cable. Through reasonable structural design and assembly, the invention realizes the reliable connection function of the outer shielding of the cable and the housing of the electrical penetration through the sealing joint of the electrical penetration.

Description

A structural component for realizing cable outer shielding shell connection through a sealing joint

technical field

The invention belongs to the technical field of dual-coaxial signal transmission in the nuclear power industry, and in particular relates to a structural member for realizing the outer shielding connection of cables through sealing joints.

Background technique

The high-temperature gas-cooled reactor demonstration project is based on the fourth-generation nuclear power technology independently developed by Tsinghua University. The electrical penetrations used on the storage tank are imported from Germany, and only provide single-core coaxial cable signal transmission interfaces, without considering the shell connection of the outermost layer of the cable. Here, the outermost shielding of the twin-coaxial cable is used as the signal loop, and a good shielding connection with the shell of the penetration must be achieved, otherwise the level sensor in the storage tank cannot work normally. Therefore, the outer shielding signal is realized according to the existing penetration. A reliable connection is essential.

Contents of the invention

The purpose of the present invention is to provide a structural member for connecting the cable outer shield to the shell through a sealed joint, so as to realize a good connection between the cable outer shield and the shell.

In order to achieve the above object, the technical scheme adopted in the present invention is:

A structural part that realizes the connection of the outer shielding shell of the cable through a sealing joint. The connecting structural part is a T-shaped thin-walled tubular slotted structure, which is scalable in the inner diameter and circumferential direction; the sealing joint shell is fastened to the penetrating piece shell, and the fastening nut , metal pressing parts, rubber seals and connecting structural parts are sequentially inserted into the double coaxial cable, and the double coaxial cable is inserted into the sealing joint housing; the rubber sealing part and connecting structural parts are pushed into the sealing joint housing, through the fastening nut, The metal pressing part compresses and tightens the rubber seal, and acts on the connecting structural part, so that the wide end face of the connecting structural part is closely connected with the sealing joint shell, so that the slotted and thin-walled part of the connecting structural part is deformed and tightly held by the double coaxial cable .

The sealing joint housing and the penetrating piece housing are fastened by threads.

The beneficial effects obtained by the present invention are:

Through reasonable structural design and assembly, the invention realizes the function of reliably connecting the outer shield of the cable with the housing of the electrical penetration through the sealing joint of the electrical penetration.

Description of drawings

Figure 1 is a schematic diagram of the assembly of connecting structural parts;

Figure 2 is a schematic diagram of the design structure;

In the figure: 1-penetration housing; 2-sealed joint housing; 3-connection structure; 4-rubber seal; 5-metal pressing piece; 6-fastening nut;

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

As shown in Fig. 1 and Fig. 2, the structural parts for realizing the outer shielding connection of the cable through the sealing joint according to the present invention are as follows: the connecting structural part 3 is a T-shaped thin-walled tubular slotted structure, and the inner diameter is circumferentially scalable; the sealing joint The casing 2 and the through-piece casing 1 are fastened by threads, the fastening nut 6, the metal pressing part 5, the rubber seal 4 and the connecting structural part 3 are sequentially inserted into the double coaxial cable 7, and the double coaxial cable 7 is inserted into the seal The joint housing 2; the rubber seal 4 and the connection structure 3 are pushed into the seal joint housing 2, and the rubber seal 4 is compressed and tightened by the fastening nut 6 and the metal pressing part 5, and the force acts on the connection structure 3, The wide end face of the connection structure 3 is closely connected with the sealing joint housing 2, and the slotted thin-walled part of the connection structure 3 is deformed to tightly hug the twin-coaxial cable 7, so that the outside of the double-coaxial cable 7 is realized through the connection structure 3. The electrical connection to the feedthrough housing 1 is shielded.

Claims (2)

1. a kind of structural member for realizing cable external shield body contact by seal nipple, it is characterised in that：Connection member (3) is T Shape thin-walled tubular notching construction, it is circumferentially scalable in internal diameter；Seal nipple shell (2) is fastened with penetration piece shell (1), fastens spiral shell Female (6), metal compaction part (5), rubber seal (4) and connection member (3) are sequentially inserted in double coaxial cables (7), double same Shaft cable (7) is inserted into seal nipple shell (2)；Rubber seal (4) and connection member (3) push-in seal nipple shell (2), By fastening nut (6), metal compaction part (5) compression, fastening rubber seal (4), active force makes in connection member (3) Connection member (3) wide end surface is closely connect with seal nipple shell (2), makes connection member (3) fluting thin-walled portion deformation It is held tightly with double coaxial cables (7).

2. the structural member according to claim 1 for realizing cable external shield body contact by seal nipple, it is characterised in that：Institute The seal nipple shell (2) stated passes through screw threads for fastening with penetration piece shell (1).