CN110571729A - Sealing connection reducing - Google Patents
Sealing connection reducing Download PDFInfo
- Publication number
- CN110571729A CN110571729A CN201910956764.0A CN201910956764A CN110571729A CN 110571729 A CN110571729 A CN 110571729A CN 201910956764 A CN201910956764 A CN 201910956764A CN 110571729 A CN110571729 A CN 110571729A
- Authority
- CN
- China
- Prior art keywords
- thread
- pipe body
- locking nut
- npt
- nut
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
- H02G3/02—Details
- H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Cable Accessories (AREA)
Abstract
The invention discloses a sealed 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 invention has the beneficial effects 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
Technical Field
The invention relates to a sealing connection reducing device, in particular to an explosion-proof sealing connection reducing device.
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.
disclosure of Invention
In order to solve the defects of the background technology, the invention provides a sealing connection reducing structure, wherein the thread type is NPT sealing thread and the sealing connection reducing structure is an explosion-proof thread structure.
The purpose of the invention is realized as follows:
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 technical scheme adopted by the invention is as follows: 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 invention has the beneficial effects 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 cross-sectional structure 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 now be described in more detail by way of example with reference to the accompanying drawings in which:
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 technical scheme adopted by the invention is as follows: 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 cross-sectional structure of the invention comprises NPT threads 1, a lock nut 2, a hexagonal nut 3, an electrical interface 4, a shaft shoulder 5, a wire passing cavity 6, anti-loosening threads 7 and a wire outlet hole 8.
The second embodiment is as follows: as shown in the figure, the anti-explosion sealing structure comprises NPT threads 1, a locking nut 2 and anti-loosening threads 7.
Claims (1)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910956764.0A CN110571729A (en) | 2019-10-10 | 2019-10-10 | Sealing connection reducing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910956764.0A CN110571729A (en) | 2019-10-10 | 2019-10-10 | Sealing connection reducing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110571729A true CN110571729A (en) | 2019-12-13 |
Family
ID=68784270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910956764.0A Pending CN110571729A (en) | 2019-10-10 | 2019-10-10 | Sealing connection reducing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110571729A (en) |
-
2019
- 2019-10-10 CN CN201910956764.0A patent/CN110571729A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20191213 |
|
| WD01 | Invention patent application deemed withdrawn after publication |