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CN-116266684-B - Sealing protection structure of connector

CN116266684BCN 116266684 BCN116266684 BCN 116266684BCN-116266684-B

Abstract

The invention relates to the technical field of nuclear power signal transmission, and particularly discloses a connector sealing protection structure, wherein when a sealing cylinder is installed and pushed to a final position, a piston seal is formed by an inner wall and an O-shaped ring in an outer groove of a limiting end, when a connector plug is inserted into a socket on a detector, a piston rod seal is formed by the O-shaped ring in the inner groove of the sealing cylinder and the outer surface of the detector, two clamp blocking sheets in the limiting end clamp grooves on a tail nut of the connector plug, and when the sealing cylinder is in the final position, the clamp blocking sheets are radially limited in the grooves by the inner wall, so that the connector plug can be regulated in the circumferential direction and axially limited in the installation and working process without loosening. The invention has excellent sealing effect, reliable connection and anti-loose performance, and has the manual disassembly and assembly function.

Inventors

  • MA JIANGWEI
  • ZHANG ZHANJUN
  • DENG PENG
  • LI BAOCHENG
  • LI ZHIJUN
  • LIU CUI
  • LIU SUZHI
  • ZHANG HONGTAO
  • WU FUXIAN

Assignees

  • 中核控制系统工程有限公司

Dates

Publication Date
20260512
Application Date
20211217

Claims (10)

  1. 1. A sealing protection structure of a connector is characterized by comprising an organic cable, an outer sheath (1), a core wire, a connector plug (2), a socket (3) and a detector (4) which are connected in sequence in a sealing protection mode, wherein the sealing protection structure comprises a sealing protection assembly and a fastening assembly; The sealing protection assembly comprises a clamp separation blade A (5), a limiting end head (7), a sealing cylinder (9), a connecting protection sleeve (10) and a tail connecting cylinder (13); the tail connecting cylinder (13) is sleeved on the organic cable and the outer sheath (1); the connecting protective sleeve (10) is of a cone-shaped structure and is sleeved on the cable and the outer sheath (1) and the core wire, and the connecting protective sleeve (10) is connected with the tail connecting tube (13); The limiting end head (7) is of a cylindrical structure and sleeved on the core wire and the connector plug (2), and the limiting end head (7) is connected with the connecting protective sleeve (10), a baffle slot is processed on the outer wall of one end of the limiting end head (7) close to the connector plug (2), and a boss is processed on the outer wall of the middle part of the limiting end head (7); The clamp retaining piece A (5) is fixed in a retaining piece groove of the limiting end head (7) through a pin shaft, and when the clamp retaining piece A (5) is clamped, the inner diameter is smaller than the inner diameter of the limiting end head (7), so that the connector plug (2) can be clamped and fixed, and the connector plug (2) can be fixed in the axial direction and can move freely in the circumferential direction; the clamp retaining sheet A (5) is turned outwards around the pin shaft, so that the connector plug (2) is quickly detached; The outer sides of the connecting protective sleeve (10), the limiting end head (7), the connector plug (2) and the socket (3) are sleeved with a sealing cylinder (9) in a sliding manner, and the sealing cylinder is used for sealing and protecting the connector plug (2) and the socket (3); The sealing cylinder (9) can move along the axial direction of the connecting protective sleeve (10), the limiting end head (7), the connector plug (2) and the socket (3), a limiting groove is formed in the inner wall, close to one end of the connecting protective sleeve (10), of the sealing cylinder (9), and a limiting column is formed in the outer wall of the other end of the sealing cylinder (9) and used for being clamped in a limiting hole of the fastening end head (14); The boss of the limiting end head (7) is clamped into the limiting groove of the sealing cylinder (9) to fix the sealing cylinder (9), and at the moment, the other end of the sealing cylinder (9) is sleeved on the shell of the socket (3); The fastening assembly comprises a fastening end head (14), a corrugated spring (15), a clamp (16) and a clamp baffle B (17); the fastening end head (14) is of a sleeve structure and sleeved on the detector (4), and a spiral channel and a limit hole communicated with the end of the spiral channel are processed on the side wall of one end of the detector, which is close to the sealing cylinder (9); The detector (4) is also sleeved with a corrugated spring (15) and a clamp (16), one end of the corrugated spring (15) props against the clamp (16), the other end props against the inner end face of the fastening end head (14), the fastening end head (14) can be manually pressed and rotated under the action of the elasticity of the corrugated spring (15), and a limit column on the sealing cylinder (9) is screwed into a limit hole of the fastening end head (14) against the elasticity of the corrugated spring (15), so that the connection and the fixation with the sealing cylinder (9) are realized; The clamp (16) and the clamp baffle B (17) are connected through a pin shaft, the inner diameter of the clamp baffle B (17) is smaller than the inner diameter of the clamp (16) after clamping, and the detector (4) can be clamped and fixed; The clamp baffle B (17) is turned outwards around the pin shaft, so that the detector (4) can be quickly disassembled.
  2. 2. The connector seal protection structure according to claim 1, wherein the inner wall of the tail connecting tube (13) is provided with an internal thread, and the outer wall of the locking nut (11) is provided with an external thread which is matched with the internal thread of the tail connecting tube (13); The clamping jaw (12) is clamped on the organic cable and the outer sheath (1), the edge of the clamping jaw is tightly pressed and fixed through the locking nut (11), the tail connecting cylinder (13) is sleeved on the outer sides of the clamping jaw (12) and the locking nut (11), and the tail connecting cylinder (13) is connected with the locking nut (11) through threads.
  3. 3. The connector seal protection structure according to claim 1, wherein an annular limit groove and an axial guide groove communicated with the annular limit groove are formed in the inner wall of the seal cylinder (9) close to one end of the connecting protective sleeve (10); the boss of the limiting end head (7) enters the annular limiting groove from the axial guiding groove of the sealing cylinder (9), so that the sealing cylinder (9) is fixed.
  4. 4. The connector seal protection structure according to claim 1, wherein an annular groove is formed in the outer wall of one end, close to the connector plug (2), of the limiting end head (7) and is used for placing an O-shaped ring A (6) and being attached to the inner wall of the sealing cylinder (9) to achieve sealing.
  5. 5. The connector seal protection structure according to claim 1, wherein an annular groove is formed in the inner wall of the other end of the seal cylinder (9) for placing an O-shaped ring B (8), and the seal between the seal cylinder (9) and the socket (3) is achieved through the O-shaped ring B (8).
  6. 6. The connector seal protection structure according to claim 1, wherein two baffle grooves are formed in the limiting end (7) and are symmetrically arranged along the circumferential direction.
  7. 7. A sealing protection structure of a connector according to claim 1, wherein a spiral channel with 1/4 pitch and a limit hole communicated with the end of the spiral channel are symmetrically processed on the side wall of the fastening end (14) close to one end of the sealing cylinder (9).
  8. 8. A connector seal protecting structure according to claim 7, wherein said clip tabs B (17) are mirror-symmetrically disposed in the tab grooves of the clip (16).
  9. 9. A connector seal protection structure according to claim 1, wherein said connection protecting sleeve (10) is connected with said tail connecting cylinder (13) by means of girth welding.
  10. 10. The connector seal protection structure according to claim 1, wherein the limit end (7) is connected with the connection protection sleeve (10) through ring welding.

Description

Sealing protection structure of connector Technical Field The invention belongs to the technical field of nuclear power signal transmission, and particularly relates to a connector sealing protection structure. Background The connector in the nuclear power station is a component part of the detector assembly in the reactor and a signal transmission cable thereof, and is positioned inside the containment vessel and outside the pressure vessel and used for connecting the detector assembly and the signal transmission cable and transmitting weak current signals and weak voltage signals. The type electric connector is divided into a plug and a socket, wherein the plug is fixed at a cable end, and the socket is welded at a detector end. Because the connector has no sealing function and low mechanical connection strength after plugging, in order to ensure stable signal transmission of the connector, a sealing protection structure with good sealing performance and mechanical connection performance and manual quick disassembly is needed to be designed. Disclosure of Invention The invention aims to provide a connector sealing protection structure which can ensure that a connector keeps normal functions under the condition of an identification test. The technical scheme of the invention is as follows: the sealing protection structure of the connector is used for sealing and protecting the organic cable, the outer sheath, the core wire, the connector plug, the socket and the detector which are connected in sequence, and comprises a sealing protection assembly and a fastening assembly; the sealing protection assembly comprises a clamp baffle A, a limiting end, a sealing cylinder, a connecting protective sleeve and a tail connecting cylinder; the tail connecting cylinder is sleeved on the organic cable and the outer sheath; the connecting protective sleeve is of a cone structure and is sleeved on the cable and the outer sheath and the core wire, and the connecting protective sleeve is connected with the tail connecting tube; The limiting end is of a cylindrical structure and sleeved on the core wire and the connector plug, and is connected with the connecting protective sleeve; the clamp retaining piece A is fixed in a retaining piece groove of the limiting end through a pin shaft, and when the clamp retaining piece A is clamped, the inner diameter of the clamp retaining piece A is smaller than the inner diameter of the limiting end, so that the connector plug can be clamped and fixed, and the connector plug can be fixed in the axial direction and can move freely in the circumferential direction; the clamp retaining sheet A is turned outwards around the pin shaft, so that the connector plug can be quickly detached; the outer sides of the connecting protective sleeve, the limiting end socket, the connector plug and the socket are sleeved with sealing cylinders in a sliding manner, and the sealing cylinders are used for sealing and protecting the connector plug and the socket; The sealing cylinder can move along the axial direction of the connecting protective sleeve, the limiting end head, the connector plug and the socket, a limiting groove is processed on the inner wall of the sealing cylinder, which is close to one end of the connecting protective sleeve, and a limiting column is processed on the outer wall of the other end of the sealing cylinder and is used for being clamped in a limiting hole of the fastening end head; the boss of the limiting end is clamped into the limiting groove of the sealing cylinder to fix the sealing cylinder, and the other end of the sealing cylinder is sleeved on the shell of the socket; the fastening assembly comprises a fastening end head, a corrugated spring, a clamp and a clamp baffle B; the fastening end is of a sleeve structure and sleeved on the detector, and a spiral channel and a limiting hole communicated with the end of the spiral channel are formed in the side wall of one end of the detector, which is close to the sealing cylinder; The detector is also sleeved with a corrugated spring and a clamp, one end of the corrugated spring props against the clamp, the other end props against the inner end surface of the fastening end head, the fastening end head can be manually pressed and rotated under the action of the elasticity of the corrugated spring, and the limit column on the sealing cylinder is screwed into the limit hole of the fastening end head against the elasticity of the corrugated spring, so that the connection and the fixation with the sealing cylinder are realized; The clamp and the clamp baffle B are connected through a pin shaft, and the inner diameter of the clamp baffle B is smaller than the inner diameter of the clamp after clamping, so that the detector can be clamped and fixed; the clamp separation blade B is turned outwards around the pin shaft, so that the detector can be quickly disassembled. An inner thread is processed on the inner wall of the tail connecti