CN211929779U - Sealing tail accessory - Google Patents
Sealing tail accessory Download PDFInfo
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- CN211929779U CN211929779U CN202020574490.7U CN202020574490U CN211929779U CN 211929779 U CN211929779 U CN 211929779U CN 202020574490 U CN202020574490 U CN 202020574490U CN 211929779 U CN211929779 U CN 211929779U
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- hollow cylindrical
- cylindrical section
- sealed
- outer diameter
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Abstract
The utility model discloses a sealed afterbody annex has solved the current not good problem of afterbody annex sealing performance who is connected with nuclear power station armor cable. The utility model discloses a afterbody annex includes the casing body, is equipped with the seal port on the casing body, and the cylindric lock is equipped with to vertical installation in the seal port, and it is fixed to adopt laser welding between cylindric lock and the seal port. The utility model provides high afterbody annex sealed reliability can keep good sealing performance in high temperature, high damp and hot, nuclear irradiation, complicated mechanical environment, satisfies the sealed requirement under the nuclear power station complex condition.
Description
Technical Field
The utility model belongs to the technical field of electric connector afterbody annex, a sealed afterbody annex is provided very much, mainly used is connected with the armor cable for the nuclear power station.
Background
The armored cable adopted by the nuclear power station is in service in the environment with high temperature, high humidity and high nuclear radiation, and provides a huge challenge for the sealing technology of the connector tail accessory. Once the sealing port fails, moist air and impurities enter the connector, affecting the performance of the cable.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a can satisfy sealed afterbody annex of requirement under the nuclear power station complex condition.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a sealed afterbody annex, this afterbody annex includes the casing body, is equipped with the seal port on the casing body, and the cylindric lock is equipped with to vertical installation in the seal port, adopts laser welding fixed between cylindric lock and the seal port.
Furthermore, the shell body comprises a first hollow cylindrical section and a second hollow cylindrical section which are different in outer diameter and are integrally formed, the outer diameter of the first hollow cylindrical section is larger than that of the second hollow cylindrical section, the outer diameter of the second hollow cylindrical section is smaller than that of the first hollow cylindrical section, the inner diameter of the second hollow cylindrical section is smaller than that of the second hollow cylindrical section, the sealing opening is a radial circular through hole and is positioned on the first hollow cylindrical section, an annular groove is formed in the tail end of the first hollow cylindrical section, and an external thread is arranged on the annular groove and is used for being connected with the connector shell.
Further, the outer diameter of the cylindrical pin is matched with the inner diameter of the sealing opening.
Further, the shell body is made of 6Cr19Ni10 stainless steel.
Further, the cylindrical pin is made of 6Cr19Ni10 stainless steel.
Compared with the prior art, the utility model discloses following beneficial effect has: the utility model provides high afterbody annex sealed reliability can keep good sealing performance in high temperature, high damp and hot, nuclear irradiation, complicated mechanical environment, satisfies the sealed requirement under the nuclear power station complex condition.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural view of the housing body of the present invention;
FIG. 3 is a schematic structural view of a cylindrical pin;
FIG. 4 is a schematic view of the mounting structure of the present invention with a connector and an armored wire;
in the figure: 1-a housing body; 1-1-a first hollow cylindrical section; 1-1-1-annular groove; 1-2-a second hollow cylindrical section; 2-sealing the opening; 3-cylindrical pins; 4-a wire; 5-connector housing.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the sealing tail accessory comprises a shell body 1, a sealing opening 2 is arranged on the shell body 1, a cylindrical pin 3 is vertically arranged in the sealing opening 2, and the cylindrical pin 3 and the sealing opening 2 are fixed by laser welding.
The shell body 1 comprises a first hollow cylindrical section 1-1 and a second hollow cylindrical section 1-2 which are different in outer diameter and are integrally formed, the outer diameter of the first hollow cylindrical section 1-1 is larger than the outer diameter of the second hollow cylindrical section 1-2, the outer diameter of the second hollow cylindrical section 1-2 is smaller than the inner diameter of the first hollow cylindrical section 1-1, the inner diameter of the second hollow cylindrical section 1-2 is smaller than the outer diameter of the second hollow cylindrical section 1-2, a sealing opening 2 is a radial circular through hole and is positioned on the first hollow cylindrical section 1-1, an annular groove 1-1-1 is formed in the tail end of the first hollow cylindrical section 1-1, and an external thread is arranged on the annular groove 1-1-1 and is used for being connected with a connector shell.
The outer diameter of the cylindrical pin 3 is matched with the inner diameter of the sealing opening 2.
The shell body 1 is made of 6Cr19Ni10 stainless steel.
The cylindrical pin 3 is made of 6Cr19Ni10 stainless steel.
During the assembly, insert cylindric lock 3 perpendicularly in the sealing opening 2 of casing body 1, adopt laser welding fixed between cylindric lock 3 and the sealing opening 2, after the welding finishes, polish and polish the welding position, inspect under 20 times magnifying glasses, if gas pocket, sand hole and hourglass welding phenomenon appear, carry out the repair welding and handle, polish the polishing again after the repair welding. The lead 4 penetrates from an inner hole of the second hollow cylindrical section 1-2 to be connected with the connector, and the connector shell 5 is connected with an external thread on the periphery of the tail end of the first hollow cylindrical section 1-1 to realize the fixation with the sealing tail accessory.
The tail accessory is detected by a helium mass spectrometer leak detector, and the leakage rate of a welding part is 1.2 multiplied by 10 when the internal and external pressure difference is 101.325kPa-9Pa·m3/s。
The product is placed in a high-temperature test box at 480 ℃ for 4 hours, and the integrity of the welding seam is observed by a magnifying glass of 20 times without generating cracks.
Subjecting the product to vibration test, and performing gas tightness test with leakage rate of 1.2 × 10-8Pa·m3/s。
To sum up, the utility model discloses have higher stability, can stabilize work under the environment of humidity, high temperature, nuclear irradiation, satisfy the requirement of sealing under the nuclear power station adverse circumstances.
The principle and the implementation of the present invention are explained herein by using specific examples, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (4)
1. A sealed tail accessory is characterized by comprising a shell body, wherein a sealed opening is formed in the shell body, a cylindrical pin is vertically installed in the sealed opening, and the cylindrical pin and the sealed opening are fixed through laser welding; the shell body comprises a first hollow cylindrical section and a second hollow cylindrical section which are different in outer diameter and are integrally formed, the outer diameter of the first hollow cylindrical section is larger than that of the second hollow cylindrical section, the outer diameter of the second hollow cylindrical section is smaller than that of the first hollow cylindrical section, the inner diameter of the second hollow cylindrical section is smaller than that of the second hollow cylindrical section, a sealing opening is a radial circular through hole and is positioned on the first hollow cylindrical section, an annular groove is formed in the tail end of the first hollow cylindrical section, and an external thread is arranged on the annular groove and is used for being connected with the connector shell.
2. The seal tail attachment of claim 1, wherein the cylindrical pin has an outer diameter that matches an inner diameter of the seal port.
3. The seal tail attachment of claim 1, wherein the housing body is formed from 6Cr19Ni10 stainless steel.
4. The seal tail attachment of claim 1, wherein the cylindrical pin is made of 6Cr19Ni10 stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020574490.7U CN211929779U (en) | 2020-04-17 | 2020-04-17 | Sealing tail accessory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020574490.7U CN211929779U (en) | 2020-04-17 | 2020-04-17 | Sealing tail accessory |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211929779U true CN211929779U (en) | 2020-11-13 |
Family
ID=73329009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020574490.7U Active CN211929779U (en) | 2020-04-17 | 2020-04-17 | Sealing tail accessory |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211929779U (en) |
-
2020
- 2020-04-17 CN CN202020574490.7U patent/CN211929779U/en active Active
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