CN211089037U

CN211089037U - Sealing connection reducing

Info

Publication number: CN211089037U
Application number: CN201921683454.8U
Authority: CN
Inventors: 姜崇波; 王锡铜; 李春玉; 尹莉莉
Original assignee: Harbin Dongfang Alarm Technology Co ltd
Current assignee: Harbin Dongfang Alarm Technology Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-07-24
Anticipated expiration: 2029-10-10

Abstract

The utility model discloses a seal connection reducing pipe, which comprises a pipe body; the method is characterized in that: the two ends of the tube body are respectively provided with an NPT thread and an electric structure; a wire passing cavity is formed in the pipe body; one end of the wire passing cavity close to the NPT thread is provided with a wire outlet hole; a locking nut is arranged on the outer side of the pipe body close to the NPT thread; a hexagonal nut is arranged on the outer side of the tube body close to the electrical interface; a shaft shoulder is arranged between the locking nut and the hexagonal nut; and anti-loosening threads are arranged between the locking nut and the pipe body. The utility model has the advantages that: the NPT thread can be dismounted and mounted for many times, the protective performance of the connecting diameter is not influenced, and the fixing structure is reliable, simple in structure and convenient to mount.

Description

Sealing connection reducing

Technical Field

The utility model relates to a sealing connection reducing specifically is an explosion-proof sealing connection reducing.

Background

In the field of explosive gas atmosphere, the connection modes of interfaces between explosion-proof electrical equipment are more and more, in order to enhance the reliability of interface connection and meet the requirement of explosion-proof performance, the interface threads all adopt explosion-proof threads, and the fastening mode adopts a locking nut. When outdoor environment uses, if do not do sealed protection and handle, only the explosion-proof performance can't satisfy the operation requirement, because of some traditional handicraft adopt raw material area winding screw thread department to seal the processing, but dismantle the screw thread when maintenance or change many times and can destroy the sealing layer, lose the protecting effect.

SUMMERY OF THE UTILITY MODEL

In order to solve the deficiency of the background art, the utility model provides a sealing connection reducing, its screw thread kind is NPT seal thread to for flame proof helicitic texture.

The purpose of the utility model is realized like this:

a sealed connection reducing pipe comprises a pipe body; the method is characterized in that: the two ends of the tube body are respectively provided with an NPT thread and an electric structure; a wire passing cavity is formed in the pipe body; one end of the wire passing cavity close to the NPT thread is provided with a wire outlet hole; a locking nut is arranged on the outer side of the pipe body close to the NPT thread; a hexagonal nut is arranged on the outer side of the tube body close to the electrical interface; a shaft shoulder is arranged between the locking nut and the hexagonal nut; and anti-loosening threads are arranged between the locking nut and the pipe body.

The utility model discloses the technical scheme who adopts does: the explosion-proof sealed connection reducing unit comprises an NPT threaded end, a locking nut, a hexagonal nut structure, an electrical interface thread, a shaft shoulder, a wire passing cavity, an anti-loosening thread and a wire outlet hole. The NPT threaded end on the left side adopts sealed tapering screw thread, can be waterproof and dustproof after cooperating with detector internal thread hole, and locknut locking back can prevent that the NPT screw thread from taking off. The right side electrical interface is connected with the audible and visual alarm in a sealing and non-detachable mode, and the installation connection reducing diameter is matched with a tool through a hexagonal nut, so that the installation structure is reliable and stable. The wire passing glue and the wire outlet hole are of a cable structure connected between two devices and are sealed through a glue sealing structure.

The utility model has the advantages that: the NPT thread can be dismounted and mounted for many times, the protective performance of the connecting diameter is not influenced, and the fixing structure is reliable, simple in structure and convenient to mount.

Drawings

Fig. 1 is a schematic sectional view of the present invention.

In the figure: 1-NPT thread, 2-lock nut, 3-hexagonal nut, 4-electrical interface, 5-shaft shoulder, 6-wire-passing cavity, 7-anti-loosening thread and 8-wire outlet hole.

Detailed Description

The invention will be described in more detail below by way of example with reference to the accompanying drawings:

example 1

A sealed connection reducing pipe comprises a pipe body; the method is characterized in that: the NPT thread 1 and the electric structure are respectively arranged at two ends of the tube body; a wire passing cavity 6 is arranged inside the pipe body; a wire outlet hole 8 is formed in one end, close to the NPT thread 1, of the wire passing cavity 6; a locking nut 2 is arranged on the outer side of the pipe body close to the NPT thread 1; a hexagonal nut 3 is arranged on the outer side of the pipe body close to the electric interface 4; a shaft shoulder 5 is arranged between the locking nut 2 and the hexagonal nut 3; and an anti-loosening thread 7 is arranged between the locking nut 2 and the pipe body.

Example 2

The utility model discloses the technical scheme who adopts does: the explosion-proof sealed connection reducing structure comprises an NPT thread 1 end, a locking nut 2, a hexagonal nut 3 structure, an electrical interface 4 thread, a shaft shoulder 5, a wire passing cavity 6, an anti-loosening thread 7 and a wire outlet hole 8. The end of the NPT thread 1 on the left side adopts a sealing taper thread, can be waterproof and dustproof after being matched with the inner thread hole of the detector, and can prevent the NPT thread 1 from loosening after the locking nut 2 is locked. The right side electrical interface 4 is connected with the audible and visual alarm in a sealing and non-detachable mode, and the installation connection reducing diameter is matched with a tool through the hexagonal nut 3, so that the installation structure is reliable and stable. The wire passing glue and the wire outlet hole 8 are used for connecting a cable structure between two devices and are sealed through a glue sealing structure.

Example 3

The first embodiment is as follows: as shown in the figure, the utility model discloses the section structure includes NPT screw thread 1, lock nut 2, hexagonal nut 3, electrical interface 4, shaft shoulder 5, crosses line chamber 6, locking screw thread 7 and wire hole 8 that takes off.

The second embodiment is as follows: as shown in the figure, the utility model discloses explosion-proof seal structure includes NPT screw thread 1, lock nut 2 and locking taking off screw thread 7.

Claims

1. A sealed connection reducing pipe comprises a pipe body; the method is characterized in that: the two ends of the tube body are respectively provided with an NPT thread and an electric structure; a wire passing cavity is formed in the pipe body; one end of the wire passing cavity close to the NPT thread is provided with a wire outlet hole; a locking nut is arranged on the outer side of the pipe body close to the NPT thread; a hexagonal nut is arranged on the outer side of the tube body close to the electrical interface; a shaft shoulder is arranged between the locking nut and the hexagonal nut; and anti-loosening threads are arranged between the locking nut and the pipe body.