CN112952736A - Radiation-resistant cable and armoring method thereof - Google Patents
Radiation-resistant cable and armoring method thereof Download PDFInfo
- Publication number
- CN112952736A CN112952736A CN202110342126.7A CN202110342126A CN112952736A CN 112952736 A CN112952736 A CN 112952736A CN 202110342126 A CN202110342126 A CN 202110342126A CN 112952736 A CN112952736 A CN 112952736A
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- Prior art keywords
- cable
- pressure head
- head
- wall
- radiation
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- 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
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/18—Cable junctions protected by sleeves, e.g. for communication cable
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T3/00—Measuring neutron radiation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T7/00—Details of radiation-measuring instruments
Abstract
The invention discloses an irradiation-resistant cable and an armoring method thereof, wherein the irradiation-resistant cable comprises a central cable and a corrugated pipe sleeved on the central cable, one end of the central cable is provided with a first connector, the other end of the central cable is provided with a second connector, one end of the corrugated pipe is connected with a first pressure head for plugging with the first connector, the first pressure head is sleeved with a first pressure head nut, the other end of the corrugated pipe is connected with a second pressure head for plugging with the second connector, and the second pressure head is sleeved with a second pressure head nut. The invention has the characteristics of simple structure, reasonable design, convenient realization, flexible deformation, cable protection and electromagnetic shielding, can bear gamma irradiation with long time and high dose rate, has small attenuation rate when transmitting signals in a long distance, has good use effect and is convenient for popularization and use.
Description
Technical Field
The invention belongs to the technical field of nuclear radiation measurement, and particularly relates to an irradiation-resistant cable and an armoring method thereof.
Background
The spent fuel discharged from the reactor contains unburned fissile elements such as U-235 and newly generated fissile elements such as Pu-239, U-233 and the like, and the accumulation of the fissile elements can cause critical safety accidents in the process of the post-treatment of the spent fuel. Therefore, it is necessary to monitor neutrons in a spent fuel reprocessing site to protect the environment, ensure personnel safety, and prevent the occurrence of nuclear critical safety risks.
At the position of a spent fuel post-treatment process tank body, the gamma dose rate can reach 192Gy/h at most, meanwhile, a large amount of decay heat can be released when radioactive elements decay, the neutron detection environmental condition is severe, at present, in order to prevent the radiation range from being expanded, the spent fuel post-treatment process tank body is usually sealed in a shielding chamber formed by shielding walls, and the installation difficulty of a front-end detector in a neutron detection system is increased. Due to the special characteristics of the use environment of the front-end detector, the front-end detector and the signal processing unit need to be connected through a long (about 20m) cable, which requires that the cable can withstand gamma irradiation with long time and high dose rate, and the attenuation is controlled within 30% when signals are transmitted through a long distance. Meanwhile, the front probe is generally required to be fed into the conveying casing through a cable, and therefore, the cable is required to be rigid.
In the prior art, the radiation-resistant cable which is simple in structure, rigid, capable of bearing gamma irradiation for a long time and at a high dose rate and small in attenuation rate when signals are transmitted through a long distance is also lacked.
Disclosure of Invention
The invention aims to solve the technical problem of providing an irradiation-resistant cable, which has the characteristics of simple structure, reasonable design, convenient realization, flexible deformation, cable protection and electromagnetic shielding, can bear gamma irradiation with long time and high dose rate, has small attenuation rate when transmitting signals in a long distance, has good use effect and is convenient to popularize and use.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides an irradiation-resistant cable, establishes the bellows on central cable including central cable and cover, the one end of central cable is provided with first joint, the other end of central cable is provided with the second and connects, the one end of bellows is connected with and is used for connecing the first pressure head of connecing with first joint, the cover is equipped with first pressure head nut on the first pressure head, the other end of bellows is connected with and is used for the second pressure head of connecing the socket with the second, the cover is equipped with second pressure head nut on the second pressure head.
In the irradiation-resistant cable, the central cable is a low-noise cable.
Foretell radiation-resistant cable, first joint is including being used for the fastener fixed with the center cable, the cover is equipped with the tube head on the fastener, be provided with sealed the pad between the tip of fastener and the tube head, be provided with the first clearance portion that is used for inserting first pressure head between fastener and the tube head inner wall, first pressure head nut threaded connection is on the tube head outer wall.
The wire clamp is a tooth-shaped wire clamp, and the tooth-shaped wire clamp is made of metal copper.
In the irradiation-resistant cable, one end of the wire clamp, which is close to the first pressure head, is an inclined plane.
In the irradiation-resistant cable, the sealing gasket is a lead gasket.
Foretell radiation resistant cable, the second connects establishes the sealed wedge on central cable including the cover, the cover is equipped with on the sealed wedge and presses the seat, the one end of sealed wedge and the inner wall laminating of pressing the seat, be provided with the second clearance portion that is used for inserting the second pressure head between the other end of sealed wedge and the inner wall of pressing the seat, second pressure head nut threaded connection presses on the seat outer wall.
In the irradiation-resistant cable, one end of the sealing wedge, which is close to the second pressure head, is an inclined plane.
The invention also discloses an armoring method of the irradiation-resistant cable, which realizes the irradiation-resistant cable, and the armoring method comprises the following steps:
clamping the wire clamp on a central cable;
sleeving the sealing gasket on the central cable to enable the sealing gasket to be positioned at one end of the wire clamp;
sleeving the tube head on the central cable, so that the wire clamp is positioned in the tube head, the sealing gasket is positioned between the wire clamp and the tube head, and a first gap part is formed between the wire clamp and the inner wall of the tube head;
inserting a first pressure head connected with one end of the corrugated pipe into the first gap part;
step five, connecting the first pressure head nut to the outer wall of the tube head in a threaded manner, gradually screwing the first pressure head nut, and extruding and sealing the sealing gasket to realize the sealing connection of one end of the corrugated tube and the central cable;
step six, sleeving the sealing wedge head on the central cable;
step seven, sleeving the pressing seat on the central cable to enable the sealing wedge head to be located in the pressing seat, wherein one end of the sealing wedge head is attached to the inner wall of the pressing seat, and a second gap part is formed between the other end of the sealing wedge head and the inner wall of the pressing seat;
step eight, inserting a second pressure head connected with the other end of the corrugated pipe into the second gap part;
and step nine, connecting the second pressure head nut on the outer wall of the pressure seat in a threaded manner, and gradually screwing the second pressure head nut to realize the connection of the other end of the corrugated pipe and the central cable, thereby realizing armor.
Compared with the prior art, the invention has the following advantages:
1. the radiation-resistant cable is simple in structure, reasonable in design and convenient to achieve.
2. The central cable is fixed through the copper tooth-shaped wire clamp and is sealed through the lead gasket in an extruding mode, so that the fixation and the sealing performance of the central cable are achieved, and gamma radiation is effectively isolated.
3. According to the invention, the first pressure head is inserted into the first gap part, the first pressure head nut is connected to the outer wall of the tube head in a threaded manner, the second pressure head is inserted into the second gap part, the second pressure head nut is connected to the outer wall of the pressure seat in a threaded manner, and the stainless steel corrugated tube is armored on the central cable through pure mechanical connection, so that the insertion is convenient.
4. The central cable is sheathed with the stainless steel corrugated pipe to form the radiation-resistant cable, the radiation-resistant cable has the characteristics of flexible deformation, cable protection and electromagnetic shielding, can bear gamma irradiation with long time and high dose rate, has small attenuation rate when transmitting signals through a long distance, has good use effect and is convenient to popularize and use.
In conclusion, the radiation-resistant cable has the characteristics of simple structure, reasonable design, convenience in realization, flexible deformation, cable protection and electromagnetic shielding, can bear gamma irradiation with long time and high dose rate, has small attenuation rate in long-distance signal transmission, is good in use effect and is convenient to popularize and use.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of a first joint according to the present invention;
FIG. 3 is a schematic structural view of a second joint according to the present invention;
FIG. 4 is a diagram showing the effect of the present invention.
Description of reference numerals:
1-a central cable; 2-a corrugated pipe; 3-a first joint;
3-1-wire clamp; 3-2-a tube head; 3-a gasket;
3-4-a first gap portion; 4-a second joint; 4-1-sealing wedge;
4-2-pressing seat; 4-3 — a second gap portion; 5-a first ram;
6-first ram nut; 7-a second ram; and 8, a second pressure head nut.
Detailed Description
As shown in fig. 1, the radiation-resistant cable of the present invention includes a center cable 1 and a corrugated tube 2 sleeved on the center cable 1, wherein one end of the center cable 1 is provided with a first connector 3, the other end of the center cable 1 is provided with a second connector 4, one end of the corrugated tube 2 is connected with a first pressure head 5 for plugging with the first connector 3, the first pressure head 5 is sleeved with a first pressure head nut 6, the other end of the corrugated tube 2 is connected with a second pressure head 7 for plugging with the second connector 4, and the second pressure head 7 is sleeved with a second pressure head nut 8.
During concrete implementation, bellows 2 adopts corrugated stainless steel pipe, and corrugated stainless steel pipe's one end is connected first pressure head 5 and first pressure head nut 6 for with the first 3 high-speed joint on the central cable 1, second pressure head 7 and second pressure head nut 8 are connected to corrugated stainless steel pipe's the other end, be used for with the second joint 4 high-speed joint on the central cable 1, realize the stainless steel corrugated steel pipe of armor on the central cable.
In this embodiment, the center cable 1 is a low noise cable.
In this embodiment, as shown in fig. 2, the first connector 3 includes a wire clamp 3-1 for fixing with the central cable 1, the wire clamp 3-1 is sleeved with a tube head 3-2, a sealing gasket 3-3 is arranged between the end of the wire clamp 3-1 and the tube head 3-2, a first gap portion 3-4 for inserting a first pressure head 5 is arranged between the wire clamp 3-1 and the inner wall of the tube head 3-2, and the first pressure head nut 6 is in threaded connection with the outer wall of the tube head 3-2.
In the embodiment, the wire clamp 3-1 is a tooth-shaped wire clamp, and the tooth-shaped wire clamp is made of metal copper.
In this embodiment, one end of the wire clamp 3-1 close to the first pressing head 5 is an inclined surface.
In this embodiment, the sealing pad 3-3 is a lead pad.
During specific implementation, in a working state, the first joint 3 is located in the radiation detection area, the central cable 1 is fixed through the tooth-shaped wire clamp made of metal copper, the sealing gasket 3-3 is extruded between the end of the wire clamp 3-1 and the pipe head 3-2, the sealing performance is improved, the sealing gasket 3-3 is a lead gasket, the material is resistant to radiation, and gamma radiation is effectively isolated. The first pressure head 5 is inserted into the first gap part 3-4, and then the first pressure head nut 6 is in threaded connection with the outer wall of the tube head 3-2, so that the mechanical connection is realized, the convenience and the rapidness are realized, and the sealing performance is good.
In this embodiment, as shown in fig. 3, the second connector 4 includes a sealing wedge 4-1 sleeved on the central cable 1, the sealing wedge 4-1 is sleeved with a pressing seat 4-2, one end of the sealing wedge 4-1 is attached to the inner wall of the pressing seat 4-2, a second gap portion 4-3 for inserting the second pressing head 7 is arranged between the other end of the sealing wedge 4-1 and the inner wall of the pressing seat 4-2, and the second pressing head nut 8 is in threaded connection with the outer wall of the pressing seat 4-2.
In this embodiment, one end of the sealing wedge 4-1 close to the second pressure head 7 is an inclined surface.
During specific implementation, in a working state, the second connector 4 is located in a personnel operation area and is fixedly sealed through the sealing wedge 4-1, the sealing wedge 4-1 is made of polytetrafluoroethylene, the second pressure head 7 is inserted into the second gap portion 4-3, and then the second pressure head nut 8 is in threaded connection with the outer wall of the pressure seat 4-2, and the sealing device is purely mechanically connected, convenient and fast to use and good in sealing performance.
The invention relates to an armored method of an irradiation-resistant cable, which comprises the following steps:
step one, clamping the wire clamp 3-1 on a central cable 1;
step two, sleeving the sealing gasket 3-3 on the central cable 1, and enabling the sealing gasket 3-3 to be located at one end of the wire clamp 3-1;
sleeving the tube head 3-2 on the central cable 1, so that the wire clamp 3-1 is positioned in the tube head 3-2, the sealing gasket 3-3 is positioned between the wire clamp 3-1 and the tube head 3-2, and a first gap part 3-4 is formed between the wire clamp 3-1 and the inner wall of the tube head 3-2;
inserting a first pressure head 5 connected with one end of the corrugated pipe 2 into the first gap part 3-4;
step five, the first pressure head nut 6 is connected to the outer wall of the tube head 3-2 in a threaded mode and is gradually screwed down, and the sealing gasket 3-3 is used for extrusion sealing, so that one end of the corrugated tube 2 is connected with the central cable 1 in a sealing mode;
step six, sleeving the sealing wedge 4-1 on the central cable 1;
step seven, sleeving the pressure seat 4-2 on the central cable 1, so that the sealing wedge 4-1 is positioned in the pressure seat 4-2, one end of the sealing wedge 4-1 is attached to the inner wall of the pressure seat 4-2, and a second gap part 4-3 is formed between the other end of the sealing wedge 4-1 and the inner wall of the pressure seat 4-2;
step eight, inserting a second pressure head 7 connected with the other end of the corrugated pipe 2 into a second gap part 4-3;
step nine, the second pressure head nut 8 is connected to the outer wall of the pressure seat 4-2 in a threaded mode and is gradually screwed down, the other end of the corrugated pipe 2 is connected with the central cable 1, then armor is achieved, and the armor effect is shown in fig. 4.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, changes and equivalent structural changes made to the above embodiment according to the technical spirit of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims (9)
1. An irradiation resistant cable characterized by: establish bellows (2) on central cable (1) including central cable (1) and cover, the one end of central cable (1) is provided with first joint (3), the other end of central cable (1) is provided with second joint (4), the one end of bellows (2) is connected with and is used for first pressure head (5) of connecing and inserting with first joint (3), the cover is equipped with first pressure head nut (6) on first pressure head (5), the other end of bellows (2) is connected with and is used for connecting second pressure head (7) of connecing (4) to connect and insert with the second, the cover is equipped with second pressure head nut (8) on second pressure head (7).
2. A radiation-resistant cable as claimed in claim 1, characterized in that: the central cable (1) adopts a low-noise cable.
3. A radiation-resistant cable as claimed in claim 1, characterized in that: first joint (3) including be used for with central cable (1) fixed fastener (3-1), the cover is equipped with tube head (3-2) on fastener (3-1), be provided with sealed pad (3-3) between tip and tube head (3-2) of fastener (3-1), be provided with between fastener (3-1) and tube head (3-2) inner wall and be used for inserting first clearance portion (3-4) of first pressure head (5), first pressure head nut (6) threaded connection is on tube head (3-2) outer wall.
4. A radiation-resistant cable as claimed in claim 3, characterized in that: the wire clamp (3-1) is a tooth-shaped wire clamp, and the tooth-shaped wire clamp is made of metal copper.
5. A radiation-resistant cable as claimed in claim 3, characterized in that: one end of the wire clamp (3-1) close to the first pressure head (5) is an inclined plane.
6. A radiation-resistant cable as claimed in claim 3, characterized in that: the sealing gasket (3-3) is a lead gasket.
7. A radiation-resistant cable as claimed in claim 1, characterized in that: the second connects (4) and establishes sealed wedge (4-1) on central cable (1) including the cover, the cover is equipped with on sealed wedge (4-1) and presses seat (4-2), the one end of sealed wedge (4-1) is laminated with the inner wall of pressing seat (4-2), be provided with between the other end of sealed wedge (4-1) and the inner wall of pressing seat (4-2) and be used for inserting second clearance portion (4-3) of second pressure head (7), second pressure head nut (8) threaded connection is on pressing seat (4-2) outer wall.
8. A radiation-resistant cable as claimed in claim 7, characterized in that: one end of the sealing wedge head (4-1) close to the second pressure head (7) is an inclined surface.
9. A method for armouring a radiation-resistant cable, characterised in that it implements a radiation-resistant cable according to claims 1-8, said armouring method comprising the following steps:
step one, clamping the wire clamp (3-1) on a central cable (1);
step two, sleeving the sealing gasket (3-3) on the central cable (1) to enable the sealing gasket (3-3) to be located at one end of the wire clamp (3-1);
step three, sleeving the tube head (3-2) on the central cable (1), enabling the wire clamp (3-1) to be located in the tube head (3-2), enabling the sealing gasket (3-3) to be located between the wire clamp (3-1) and the tube head (3-2), and enabling a first gap part (3-4) to be formed between the wire clamp (3-1) and the inner wall of the tube head (3-2);
inserting a first pressure head (5) connected with one end of the corrugated pipe (2) into the first gap part (3-4);
step five, the first pressure head nut (6) is connected to the outer wall of the tube head (3-2) in a threaded mode and is gradually screwed down, the sealing gasket (3-3) is extruded and sealed, and one end of the corrugated tube (2) is connected with the central cable (1) in a sealing mode;
step six, sleeving the sealing wedge head (4-1) on the central cable (1);
step seven, sleeving the pressing seat (4-2) on the central cable (1) to enable the sealing wedge head (4-1) to be located in the pressing seat (4-2), wherein one end of the sealing wedge head (4-1) is attached to the inner wall of the pressing seat (4-2), and a second gap part (4-3) is formed between the other end of the sealing wedge head (4-1) and the inner wall of the pressing seat (4-2);
step eight, inserting a second pressure head (7) connected with the other end of the corrugated pipe (2) into a second gap part (4-3);
and step nine, connecting the second pressure head nut (8) to the outer wall of the pressure seat (4-2) in a threaded manner, and gradually screwing down to realize the connection of the other end of the corrugated pipe (2) and the central cable (1) so as to realize armor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110342126.7A CN112952736B (en) | 2021-03-30 | 2021-03-30 | Radiation-resistant cable and armoring method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110342126.7A CN112952736B (en) | 2021-03-30 | 2021-03-30 | Radiation-resistant cable and armoring method thereof |
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| Publication Number | Publication Date |
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| CN112952736A true CN112952736A (en) | 2021-06-11 |
| CN112952736B CN112952736B (en) | 2022-01-28 |
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| EP0640786A2 (en) * | 1993-08-27 | 1995-03-01 | PFLITSCH GmbH. & Co. KG. | Combined threaded connection for cable and hose |
| US20020151209A1 (en) * | 2001-04-12 | 2002-10-17 | Nexans (France) | Cable guide for a sealed box, and a sealing assembly including such a guide |
| DE202008003179U1 (en) * | 2008-02-29 | 2008-06-26 | AVC Industrial Corp., Wuku | Connector for cable and corrugated pipe |
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| CN106299790A (en) * | 2016-08-29 | 2017-01-04 | 中航动力股份有限公司 | A kind of vacuum argon filling induction brazing water flowing conduction quick change cable |
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| CN211480892U (en) * | 2020-02-25 | 2020-09-11 | 张民乐 | Cable protection device based on primary power supply |
| CN112564392A (en) * | 2020-12-21 | 2021-03-26 | 武汉市恒信泰采油设备制造有限公司 | Cable sealing device for permanent magnet synchronous motor |
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2021
- 2021-03-30 CN CN202110342126.7A patent/CN112952736B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB847721A (en) * | 1958-05-21 | 1960-09-14 | Superflexit | Improvements in end fittings for flexible hoses, conduits and the like |
| DE4105662A1 (en) * | 1991-02-22 | 1992-09-10 | Kirchner Fraenk Rohr | Joint for corrugated plastic pipes - has threaded body fitting over pipe, cap screwed round it, inner obliquely faced ring to press against O=ring in body when tightened |
| DE4325420A1 (en) * | 1993-07-29 | 1995-02-02 | Nuesse Octavio K | Cable bushing device for passing a sheathed cable through a wall perforation |
| EP0640786A2 (en) * | 1993-08-27 | 1995-03-01 | PFLITSCH GmbH. & Co. KG. | Combined threaded connection for cable and hose |
| US20020151209A1 (en) * | 2001-04-12 | 2002-10-17 | Nexans (France) | Cable guide for a sealed box, and a sealing assembly including such a guide |
| DE202008003179U1 (en) * | 2008-02-29 | 2008-06-26 | AVC Industrial Corp., Wuku | Connector for cable and corrugated pipe |
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| CN106299790A (en) * | 2016-08-29 | 2017-01-04 | 中航动力股份有限公司 | A kind of vacuum argon filling induction brazing water flowing conduction quick change cable |
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| CN112564392A (en) * | 2020-12-21 | 2021-03-26 | 武汉市恒信泰采油设备制造有限公司 | Cable sealing device for permanent magnet synchronous motor |
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| CN112952736B (en) | 2022-01-28 |
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