CN215450916U - Internal pressure-bearing sealing structure of reactor core detector assembly - Google Patents

Internal pressure-bearing sealing structure of reactor core detector assembly Download PDF

Info

Publication number
CN215450916U
CN215450916U CN202121524996.8U CN202121524996U CN215450916U CN 215450916 U CN215450916 U CN 215450916U CN 202121524996 U CN202121524996 U CN 202121524996U CN 215450916 U CN215450916 U CN 215450916U
Authority
CN
China
Prior art keywords
sealing
cable
exhaust pipe
long groove
pressure
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.)
Active
Application number
CN202121524996.8U
Other languages
Chinese (zh)
Inventor
李志军
邓鹏�
刘素志
张洪涛
张占军
朱全吉
李彪
吴福先
曾捷
解保林
刘翠
谷晓静
李宝成
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Nuclear Control System Engineering Co ltd
Original Assignee
China Nuclear Control System Engineering Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by China Nuclear Control System Engineering Co ltd filed Critical China Nuclear Control System Engineering Co ltd
Priority to CN202121524996.8U priority Critical patent/CN215450916U/en
Application granted granted Critical
Publication of CN215450916U publication Critical patent/CN215450916U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin
    • Y02E30/30Nuclear fission reactors

Landscapes

  • Monitoring And Testing Of Nuclear Reactors (AREA)

Abstract

The utility model belongs to the technical field of high-temperature and high-pressure sealing equipment, and particularly relates to an internal pressure-bearing sealing structure of a reactor core detector assembly. The cable sealing device comprises a cable sealing element, a sealing penetrating element and an exhaust pipe; the cable sealing element is cylindrical, a semicircular elongated slot is designed on the outer side surface of the cable sealing element, a small hole penetrates through the center of the cylinder, a threaded hole is designed on the bottom surface of the cylinder, and the small hole is communicated with the threaded hole; the sealing penetrating piece is tubular, and a semicircular long groove is designed on the inner surface of the sealing penetrating piece; the exhaust pipe is tubular, and one end of the exhaust pipe is provided with threads; the exhaust pipe is inserted into the cable sealing element, the threaded end of the exhaust pipe is connected with the threaded hole in the bottom surface of the cable sealing element, the armored cable penetrates through the semicircular long groove of the sealing penetrating element, and the semicircular long groove of the cable sealing element is inserted into the semicircular long groove of the sealing penetrating element. The utility model ensures the secondary sealing when the shell of the part of the reactor core detector assembly extending into the reactor pressure vessel is broken.

Description

Internal pressure-bearing sealing structure of reactor core detector assembly
Technical Field
The utility model belongs to the technical field of high-temperature and high-pressure sealing equipment, and particularly relates to an internal pressure-bearing sealing structure of a reactor core detector assembly.
Background
In order to prevent the coolant from leaking out of the pressure vessel from the inside of the assembly when the outer casing of the portion of the core probe assembly extending into the inside of the reactor pressure vessel is broken, an inner sealing structure is designed inside the assembly, and the structure can bear the designed pressure and temperature (17.3MPa, 350 ℃) of the reactor coolant.
Disclosure of Invention
The utility model aims to provide an internal pressure-bearing sealing structure of a reactor core detector assembly, which ensures secondary sealing when a shell of the reactor core detector assembly extending into the internal part of a reactor pressure vessel is broken.
In order to achieve the purpose, the technical scheme adopted by the utility model is as follows:
a pressure-bearing sealing structure in a reactor core detector assembly comprises a cable sealing element, a sealing penetrating element and an exhaust pipe; the cable sealing element is cylindrical, a semicircular elongated slot is designed on the outer side surface of the cable sealing element, a small hole penetrates through the center of the cylinder, a threaded hole is designed on the bottom surface of the cylinder, and the small hole is communicated with the threaded hole; the sealing penetrating piece is tubular, and a semicircular long groove is designed on the inner surface of the sealing penetrating piece; the exhaust pipe is tubular, and one end of the exhaust pipe is provided with threads; the exhaust pipe is inserted into the cable sealing element, the threaded end of the exhaust pipe is connected with the threaded hole in the bottom surface of the cable sealing element, the armored cable penetrates through the semicircular long groove of the sealing penetrating element, and the semicircular long groove of the cable sealing element is inserted into the semicircular long groove of the sealing penetrating element.
And brazing the contact positions of the cable sealing element, the sealing penetrating element and the armored cable.
The semi-circular long groove of the cable sealing element is inserted with the semi-circular long groove of the sealing penetrating element, and the positioning is carried out by utilizing the key groove.
The outer side surface of the cable sealing element is provided with 5-8 semicircular long grooves.
Chamfers are arranged at two ends of the semicircular long groove.
And opposite welding ports are reserved at two ends of the maximum outer diameter part of the outer part of the sealing penetrating piece.
The inner surface of the sealing penetrating piece is provided with 5-8 semicircular long grooves.
Chamfers are arranged at two ends of the semicircular long groove.
The armored cable is
Figure BDA0003150429270000021
The specification is stainless steel material or Inconel material.
The cable sealing element, the sealing penetrating element and the exhaust pipe are made of stainless steel materials.
The beneficial effects obtained by the utility model are as follows:
the utility model can keep the sealing function at least under the harsh environment of 400 ℃ and 27 MPa.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
in the figure: 1-cable seals; 2-sealing the penetration piece; 3-exhaust pipe.
Detailed Description
The utility model is described in detail below with reference to the figures and specific embodiments.
As shown in fig. 1 and 2, the internal pressure-bearing sealing structure of the core detector assembly comprises a cable sealing member 1, a sealing penetration member 2 and an exhaust pipe 3.
The cable sealing element 1 is cylindrical, 5-8 semicircular long grooves are formed in the outer side face of the cable sealing element according to the arrangement quantity of the armored cables, and chamfers are arranged at two ends of each semicircular long groove so as to guide solder to flow. A small hole penetrates through the center of the cylinder, a threaded hole with a certain depth is designed in the bottom surface of the cylinder, the small hole is communicated with the threaded hole, and the two holes can facilitate the air tightness inspection of the components after brazing. The sealing penetrating piece 2 is tubular, opposite welding ports are reserved at two ends of the maximum outer diameter position of the outer portion, 5-8 semicircular long grooves are designed on the inner surface according to the arrangement quantity of the armored cables, and chamfers are arranged at two ends of each semicircular long groove so as to guide solder to flow. The exhaust pipe 3 is tubular, and one end of the exhaust pipe is provided with threads and is used for being fixed with a threaded hole in the bottom surface of the cable sealing element 1. The exhaust pipe 3 is inserted into the cable sealing element 1, the threaded end of the exhaust pipe 3 is connected with the threaded hole in the bottom surface of the cable sealing element 1, the armored cable penetrates through the semicircular long groove of the sealing penetrating element 2, the semicircular long groove of the cable sealing element 1 is inserted into the semicircular long groove of the sealing penetrating element 2 and is positioned by using the key groove, and the contact positions of the cable sealing element 1, the sealing penetrating element 2 and the armored cable are brazed.
The sealing structure may seal the armored cable. The armored cable is
Figure BDA0003150429270000041
The specification is matched with the semi-circular long grooves of the sealing penetrating piece 2 and the cable sealing piece 1.
The internal pressure-bearing sealing structure is connected and sealed in a mode of combining a cable sealing element, a sealing penetrating element, an exhaust pipe, an armored cable, a ring-shaped brazing filler metal and high-frequency brazing. The cable sealing element, the sealing penetrating element and the exhaust pipe are generally made of stainless steel materials, and the armored cable is generally made of stainless steel materials or inconel materials. The brazing melting point is generally 500-900 ℃, and the brazing melting point is selected according to different working conditions.
The armored cable, the cable sealing element, the sealing penetrating element and the exhaust pipe are required to be installed in a certain sequence. And carrying out nondestructive testing on the armored cable, the cable sealing element, the sealing penetration piece and the exhaust pipe before installation, and cleaning and drying the parts again after the nondestructive testing is passed. And connecting the cable sealing element with the exhaust pipe in a threaded manner. And penetrating the armored cable into the corresponding semicircular elongated slot of the sealing penetrating piece. And inserting the connected semicircular elongated slot of the cable sealing element into the armored cable and the sealing penetrating piece, and positioning by using the key slots of the cable sealing element and the sealing penetrating piece. After a plurality of circles of brazing filler metal are penetrated into the key slot side, the side can be brazed by adding protective measures. Similarly, the brazing of the other side is continued in the same manner. And cleaning and washing the brazed end face after the brazing is finished and cooled. Visual inspection of the brazed joint requires a smooth surface, no cracks, no pits, and other defects. Helium leak detection is carried out on the brazing welding seam through an exhaust pipe, and the leak rate needs to be less than 1 multiplied by 10-9Pa.m3And s. And carrying out a hydraulic test on the brazing welding line, wherein the pressure range is 20-30 MPa. The electrical performance of the armored cable is checked and is equivalent to that before welding. The reliability of the internal sealing structure can be proved through a series of tests.

Claims (10)

1. The utility model provides an inside pressure-bearing seal structure of reactor core detector subassembly which characterized in that: the cable sealing device comprises a cable sealing element, a sealing penetrating element and an exhaust pipe; the cable sealing element is cylindrical, a semicircular elongated slot is designed on the outer side surface of the cable sealing element, a small hole penetrates through the center of the cylinder, a threaded hole is designed on the bottom surface of the cylinder, and the small hole is communicated with the threaded hole; the sealing penetrating piece is tubular, and a semicircular long groove is designed on the inner surface of the sealing penetrating piece; the exhaust pipe is tubular, and one end of the exhaust pipe is provided with threads; the exhaust pipe is inserted into the cable sealing element, the threaded end of the exhaust pipe is connected with the threaded hole in the bottom surface of the cable sealing element, the armored cable penetrates through the semicircular long groove of the sealing penetrating element, and the semicircular long groove of the cable sealing element is inserted into the semicircular long groove of the sealing penetrating element.
2. The pressure-bearing sealing structure inside the core probe assembly of claim 1, wherein: and brazing the contact positions of the cable sealing element, the sealing penetrating element and the armored cable.
3. The pressure-bearing sealing structure inside the core probe assembly of claim 1, wherein: the semi-circular long groove of the cable sealing element is inserted with the semi-circular long groove of the sealing penetrating element, and the positioning is carried out by utilizing the key groove.
4. The pressure-bearing sealing structure inside the core probe assembly of claim 1, wherein: the outer side surface of the cable sealing element is provided with 5-8 semicircular long grooves.
5. The pressure-bearing sealing structure inside the core detector assembly of claim 4, wherein: chamfers are arranged at two ends of the semicircular long groove.
6. The pressure-bearing sealing structure inside the core probe assembly of claim 1, wherein: and opposite welding ports are reserved at two ends of the maximum outer diameter part of the outer part of the sealing penetrating piece.
7. The pressure-bearing sealing structure inside the core probe assembly of claim 1, wherein: the inner surface of the sealing penetrating piece is provided with 5-8 semicircular long grooves.
8. The pressure-bearing sealing structure inside the core probe assembly of claim 7, wherein: chamfers are arranged at two ends of the semicircular long groove.
9. The pressure-bearing sealing structure inside the core probe assembly of claim 1, wherein: the armored cable is
Figure FDA0003150429260000011
The specification is stainless steel material or Inconel material.
10. The pressure-bearing sealing structure inside the core probe assembly of claim 1, wherein: the cable sealing element, the sealing penetrating element and the exhaust pipe are made of stainless steel materials.
CN202121524996.8U 2021-07-06 2021-07-06 Internal pressure-bearing sealing structure of reactor core detector assembly Active CN215450916U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121524996.8U CN215450916U (en) 2021-07-06 2021-07-06 Internal pressure-bearing sealing structure of reactor core detector assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121524996.8U CN215450916U (en) 2021-07-06 2021-07-06 Internal pressure-bearing sealing structure of reactor core detector assembly

Publications (1)

Publication Number Publication Date
CN215450916U true CN215450916U (en) 2022-01-07

Family

ID=79715298

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121524996.8U Active CN215450916U (en) 2021-07-06 2021-07-06 Internal pressure-bearing sealing structure of reactor core detector assembly

Country Status (1)

Country Link
CN (1) CN215450916U (en)

Similar Documents

Publication Publication Date Title
CN108037016B (en) Supercritical CO2Reaction kettle and rock mass creep diffusion erosion test system
CN113803009B (en) High-temperature and high-pressure environment simulation cabin for large calibration rock sample
CN201503332U (en) Packing box for hydraulic test on floating tube sheet end of floating head type heat exchanger
CN203011654U (en) Clamp used for pressure test of heat exchange tube
CN215450916U (en) Internal pressure-bearing sealing structure of reactor core detector assembly
CN109378095B (en) End sealing structure of rod beam critical heat flux density test simulator
CN118032149A (en) Wall temperature lead structure suitable for combustion chamber test
CN207133022U (en) A kind of sylphon seal performance test apparatus
CN103090985B (en) Sheathed thermocouple component penetrating high-temperature high-pressure helium pressure shell
CN206302103U (en) The steam turbine thrust bearing shoe valve and bearing shell leak-proof arrangement of built-in temperature probe
CN112146820A (en) Helium medium valve tightness test device and test method thereof
CN102853971B (en) Device for testing sealing performance of hydraulic expansion pipe
CN112903273B (en) Pull rod sealing system for thermal engine coupling fatigue test of blade
CN112924179B (en) Novel labyrinth seal structure and pull rod sealing system
CN112903275B (en) Sectional type pull rod sealing system for thermal engine coupling fatigue test of blade
CN204176180U (en) A kind of nuclear power delivery hose
CN210322184U (en) Clamp for capillary high-pressure test
CN216978299U (en) Pressure detection test device for single heat conduction pipe of generator hydrogen cooler
CN212692655U (en) Pressure test tool for internal thread reinforced heat exchange tube heat exchanger
CN207263384U (en) A kind of mounting structure of test fixture and floating head heat exchanger
CN217237014U (en) Anti-leakage double-branch type thermal resistance temperature sensor
CN213842312U (en) Liquid level sensor and detection assembly thereof
CN114000832B (en) Wellhead steel pipe cable connector
CN221350183U (en) Pressure test device of uniform speed pipe flowmeter
CN216198051U (en) Pressure-bearing protection device for well logging armored optical fiber sensor

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant