Connector sealing protection structure

Abstract

The application relates to the technical field of nuclear electric signal transmission, and particularly discloses a connector sealing protection structure, wherein when a sealing cylinder is pushed to a final position, an inner wall and an O-shaped ring in an outer groove of a limiting end head form a piston seal; when a connector plug is inserted into a socket on a detector, the O-shaped ring in an inner groove in the sealing cylinder and the outer surface of the detector form a piston rod seal; two clamping bracket stop flaps in the limiting end head are clamped in grooves on a nut at the tail of the connector plug; when the sealing cylinder is in the final position, the clamping bracket stop flaps are limited in the grooves in the radial direction by the inner wall, so that the connector plug can be adjusted in the circumferential direction and limited in the axial direction during installation and operation, and the connector plug cannot be loosened. The application has excellent sealing effect, reliable connection, anti-loosening function and manual dismounting function.

Description

Technical Field

[0001] This invention belongs to the field of nuclear power signal transmission technology, and specifically relates to a connector sealing and protection structure. Background Technology

[0002] In nuclear power plants, connectors are integral parts of in-reactor detector assemblies and their signal transmission cables. Located inside the reactor containment but outside the pressure vessel, these connectors connect detector assemblies to signal transmission cables, transmitting weak current and voltage signals. This type of electrical connector consists of a plug and a socket; the plug is fixed to the cable end, and the socket is soldered to the detector end.

[0003] Since these connectors lack internal sealing and have low mechanical connection strength after mating, it is urgent to design a sealing protection structure with good sealing and mechanical connection performance that can be quickly and manually disassembled in order to ensure stable signal transmission. Summary of the Invention

[0004] The purpose of this invention is to provide a connector sealing and protection structure that can ensure that the connector maintains normal function under qualification test conditions.

[0005] The technical solution of the present invention is as follows:

[0006] A connector sealing and protection structure is used to seal and protect sequentially connected organic cables and outer sheaths, core wires, connector plugs, sockets, and detectors; the sealing and protection structure includes a sealing and protection assembly and a fastening assembly.

[0007] The sealing and protection assembly includes a clamp baffle A, a limiting end, a sealing cylinder, a connecting protective sleeve, and a tail connecting cylinder;

[0008] The tail connector sleeve is fitted onto the organic cable and its outer sheath;

[0009] The connecting protective sleeve is a conical structure that is fitted over the organic cable, outer sheath, and core wire. The connecting protective sleeve is connected to the tail connecting cylinder.

[0010] The limiting end is a cylindrical structure that fits over the core wire and connector plug, and is connected to the connecting protective sleeve; a baffle groove is machined on the outer wall of the end of the limiting end near the connector plug; a boss is machined on the outer wall of the middle part of the limiting end.

[0011] The clamping plate A is fixed in the baffle groove of the limiting end by a pin. When the clamping plate A is clamped, its inner diameter is smaller than the inner diameter of the limiting end, which can clamp and fix the connector plug, thereby achieving axial fixation of the connector plug and free movement in the circumferential direction.

[0012] By turning the clamp stop plate A outward around the pin shaft, the connector plug can be quickly removed;

[0013] A sealing sleeve is provided on the outer side of the connecting protective sleeve, the limiting end, the connector plug and the socket to seal and protect the connector plug and the socket;

[0014] The sealing cylinder can move axially along the connecting protective sleeve, the limiting end, the connector plug and the socket; a limiting groove is processed on the inner wall of the sealing cylinder near the connecting protective sleeve, and a limiting post is processed on the outer wall of the other end of the sealing cylinder to be locked in the limiting hole of the fastening end.

[0015] The protrusion of the limiting end engages in the limiting groove of the sealing cylinder to fix the sealing cylinder, while the other end of the sealing cylinder is fitted onto the outer shell of the socket.

[0016] The fastening assembly includes a fastening end, a corrugated spring, a clamp, and a clamp stop plate B;

[0017] The fastening end is a sleeve structure that is fitted onto the detector. A spiral channel and a limiting hole communicating with the end of the spiral channel are machined on the side wall of the end near the sealing cylinder.

[0018] The detector is also fitted with a corrugated spring and a clamp. One end of the corrugated spring abuts against the clamp, and the other end abuts against the inner end face of the fastening end. Under the elastic force of the corrugated spring, the fastening end can be manually pressed and rotated to overcome the elastic force of the corrugated spring and screw the limiting post on the sealing cylinder into the limiting hole of the fastening end, thereby achieving connection and fixation with the sealing cylinder.

[0019] The clamp and clamp baffle B are connected by a pin. After clamping, the inner diameter of clamp baffle B is smaller than the inner diameter of clamp, which can clamp and fix the detector.

[0020] The detector can be quickly disassembled by turning the clamp baffle B outward around the pin shaft.

[0021] An internal thread is machined on the inner wall of the tail connecting cylinder, and an external thread is machined on the outer wall of the locking nut to match the internal thread of the tail connecting cylinder.

[0022] The claws are clamped onto the organic cable and its outer sheath, and their edges are tightened and fixed by a lock nut; a tail connecting tube is sleeved on the outside of the claws and the lock nut, and the tail connecting tube is threadedly connected to the lock nut.

[0023] An annular limiting groove and an axial guide groove communicating with the annular limiting groove are machined on the inner wall of the sealing cylinder near the end of the connecting protective sleeve.

[0024] The boss at the limiting end enters the annular limiting groove from the axial guide groove of the sealing cylinder to fix the sealing cylinder.

[0025] An annular groove is machined on the outer wall of the end of the limiting end near the connector plug to place the O-ring A, which fits against the inner wall of the sealing cylinder to achieve a seal.

[0026] An annular groove is machined on the inner wall of the other end of the sealing cylinder to accommodate an O-ring B, thereby achieving a seal between the sealing cylinder and the socket.

[0027] The limiting end has two baffle grooves, which are symmetrically arranged circumferentially.

[0028] A 1 / 4 pitch spiral channel and a limiting hole communicating with the end of the spiral channel are symmetrically machined on the side wall of the fastening end near the sealing cylinder.

[0029] The clamp baffles B are arranged symmetrically in the baffle groove of the clamp.

[0030] The connecting protective sleeve and the tail connecting cylinder are connected by circumferential welding.

[0031] The limiting end and the connecting protective sleeve are connected by circumferential welding.

[0032] The significant advantages of this invention are:

[0033] (1) The present invention has excellent sealing effect.

[0034] The signal cable outer shell, tail connecting tube, connecting protective sleeve and limiting end of the present invention are all connected by continuous ring welding to achieve protection and sealing of the internal cable core wire;

[0035] When the sealing cylinder of the present invention is pushed to the final position, the inner wall and the O-ring in the outer groove of the limiting end form a piston seal. When the connector plug is inserted into the socket on the detector, the O-ring in the inner groove of the sealing cylinder and the outer surface of the detector form a piston rod seal.

[0036] (2) The present invention has a reliable connection that prevents loosening and has a manual disassembly and assembly function.

[0037] In this invention, two clamping baffles in the limiting end clamp the groove on the tail nut of the connector plug. When the sealing cylinder is in the final installation position, the clamping baffles are radially limited in the groove by the inner wall, which can ensure that the connector plug is adjustable in the circumferential direction and axially limited during installation and operation, and does not loosen.

[0038] The sealing cylinder of this invention is designed with an axial guide groove and a radial limiting groove to limit the axial position of the sealing cylinder;

[0039] After the connector plug and socket of the present invention are connected, the clamp with a clamp baffle is axially fixed to the detector. At the same time, the tightening end screws the limiting shaft on the sealing cylinder into the limiting hole, and the corrugated spring presses the clamp and the detector together.

[0040] The present invention features a spiral channel and an elongated hole-type limiting hole at the fastening end. It achieves manual disassembly by means of the clamping force of a corrugated spring, and the limiting post does not loosen under vibration conditions. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the sealing and protection assembly.

[0042] Figure 2 This is a schematic diagram of the fastening assembly.

[0043] Figure 3 This is a schematic diagram of the assembly of the sealing and protection structure.

[0044] In the diagram: 1. Organic cable and outer sheath; 2. Connector plug; 3. Socket; 4. Detector; 5. Clamp stop plate A; 6. O-ring A; 7. Limiting end; 8. O-ring B; 9. Sealing cylinder; 10. Connecting protective sleeve; 11. Locking nut; 12. Claw; 13. Tail connecting cylinder; 14. Fastening end; 15. Corrugated spring; 16. Clamp; 17. Clamp stop plate B. Detailed Implementation

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0046] like Figures 1-3 The diagram illustrates a connector sealing and protection structure used to seal and protect an organic cable and its outer sheath 1, core wire, connector plug 2, socket 3, and detector 4 connected in sequence. The sealing and protection structure includes a sealing and protection assembly and a fastening assembly.

[0047] The sealing and protection assembly includes a clamp baffle A5, an O-ring A6, a limiting end 7, an O-ring B8, a sealing cylinder 9, a connecting protective sleeve 10, a locking nut 11, a claw 12, and a tail connecting cylinder 13.

[0048] Internal threads are machined on the inner wall of the tail connecting cylinder 13.

[0049] The locking nut 11 has an external thread on its outer wall, which matches the internal thread of the tail connecting cylinder 13.

[0050] The clamp 12 is engaged with the organic cable and outer sheath 1, and its edges are tightened and fixed by a locking nut 11. A tail connecting sleeve 13 is sleeved on the outside of the clamp 12 and the locking nut 11, and the tail connecting sleeve 13 is threadedly connected to the locking nut 11, which further secures the organic cable and outer sheath 1 and prevents damage to the connection points of the organic cable and outer sheath 1 with the core wire and connector plug 2 due to the movement of the organic cable and outer sheath 1.

[0051] The connecting protective sleeve 10 has a conical structure and is fitted onto the organic cable, outer sheath 1, and core wire. The connecting protective sleeve 10 and the tail connecting cylinder 13 are connected by circumferential welding.

[0052] The limiting end 7 is a cylindrical structure that fits over the core wire and connector plug 2. The limiting end 7 is connected to the connecting protective sleeve 10 by circumferential welding. An annular groove and a baffle groove are machined on the outer wall of the limiting end 7 near the connector plug 2. The annular groove is used to place the O-ring A6, which fits against the inner wall of the sealing cylinder 9 to achieve a seal. There are two baffle grooves, symmetrically arranged circumferentially. A boss is machined on the middle outer wall of the limiting end 7.

[0053] The clamping plate A5 is fixed in the retaining groove of the limiting end 7 by a pin. When the clamping plate A5 is clamped, its inner diameter is smaller than the inner diameter of the limiting end 7, which can clamp and fix the connector plug 2, realizing the axial fixation of the connector plug 2 and its free movement in the circumferential direction. By turning the clamping plate A5 outward around the pin, the connector plug 2 can be quickly removed.

[0054] A sealing cylinder 9 is slidably sleeved on the outside of the connecting protective sleeve 10, the limiting end 7, the connector plug 2 and the socket 3 to seal and protect the connector plug 2 and the socket 3.

[0055] The sealing cylinder 9 can move axially along the connecting protective sleeve 10, the limiting end 7, the connector plug 2, and the socket 3.

[0056] An annular limiting groove and an axial guide groove communicating with the annular limiting groove are machined on the inner wall of the sealing cylinder 9 near the connecting protective sleeve 10. An annular groove for placing the O-ring B8 is machined on the inner wall of the other end of the sealing cylinder 9, and a limiting post is machined on the outer wall for locking into the limiting hole of the fastening end 14. The boss of the limiting end 7 enters the annular limiting groove from the axial guide groove of the sealing cylinder 9 to fix the sealing cylinder 9. At this time, the other end of the sealing cylinder 9 is sleeved on the outer shell of the socket 3, and the sealing cylinder 9 and the socket 3 are sealed by the O-ring B8.

[0057] The fastening assembly includes a fastening end 14, a corrugated spring 15, a clamp 16, and a clamp stop plate B17.

[0058] The fastening end 14 is a sleeve structure that is fitted onto the detector 4. Symmetrically machined on the side wall of the end near the sealing cylinder 9 are a helical channel with a pitch of 1 / 4 and a limiting hole that communicates with the end of the helical channel.

[0059] A corrugated spring 15 and a clamp 16 are also fitted on the detector 4. One end of the corrugated spring 15 abuts against the clamp 16, and the other end abuts against the inner end face of the fastening end 14. Under the elastic force of the corrugated spring 15, the fastening end 14 can be manually pressed and rotated to overcome the elastic force of the corrugated spring 15 and screw the limiting post on the sealing cylinder 9 into the limiting hole of the fastening end 14, thereby realizing the connection and fixation with the sealing cylinder 9.

[0060] The clamp 16 and the clamp baffle B17 are connected by a pin. The clamp baffle B17 is arranged symmetrically in the baffle groove of the clamp 16. After clamping, the inner diameter of the clamp baffle B17 is smaller than the inner diameter of the clamp 16, which can clamp and fix the detector 4. By turning the clamp baffle B17 outward around the pin, the detector 4 can be quickly disassembled.

[0061] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0062] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A connector sealing and protection structure, characterized in that: The sealing protection structure is used to seal and protect the organic cable and outer sheath (1), core wire, connector plug (2), socket (3) and detector (4) connected in sequence; the sealing protection structure includes a sealing protection assembly and a fastening assembly; The sealing and protection assembly includes a clamp baffle A (5), a limiting end (7), a sealing cylinder (9), a connecting protective sleeve (10), and a tail connecting cylinder (13); The tail connecting tube (13) is fitted onto the organic cable and the outer sheath (1); The connecting protective sleeve (10) is a conical structure, which is fitted onto the organic cable and the outer sheath (1) and the core wire. The connecting protective sleeve (10) is connected to the tail connecting cylinder (13). The limiting end (7) is a cylindrical structure that is fitted onto the core wire and the connector plug (2). The limiting end (7) is connected to the connecting protective sleeve (10). A baffle groove is machined on the outer wall of the end of the limiting end (7) near the connector plug (2). A boss is machined on the outer wall of the middle part of the limiting end (7). The clamping plate A (5) is fixed in the baffle groove of the limiting end (7) by a pin. When the clamping plate A (5) is clamped, its inner diameter is smaller than the inner diameter of the limiting end (7), which can clamp and fix the connector plug (2) and realize the axial fixation of the connector plug (2) and its free movement in the circumferential direction. By turning the clamp baffle A (5) outward around the pin shaft, the connector plug (2) can be quickly removed; A sealing sleeve (9) is provided on the outer side of the connecting protective sleeve (10), the limiting end (7), the connector plug (2) and the socket (3) to seal and protect 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 (7), the connector plug (2) and the socket (3); a limiting groove is processed on the inner wall of the sealing cylinder (9) near the connecting protective sleeve (10), and a limiting post is processed on the outer wall of the other end of the sealing cylinder (9) to be stuck in the limiting hole of the fastening end (14); The protrusion of the limiting end (7) is inserted into the limiting groove of the sealing cylinder (9) to fix the sealing cylinder (9). At this time, the other end of the sealing cylinder (9) is sleeved on the outer shell of the socket (3). The fastening assembly includes a fastening end (14), a corrugated spring (15), a clamp (16), and a clamp stop plate B (17); The fastening end (14) is a sleeve structure, which is sleeved on the detector (4). A spiral channel and a limiting hole communicating with the end of the spiral channel are machined on the side wall of the end near the sealing cylinder (9). A corrugated spring (15) and a clamp (16) are also fitted on the detector (4). One end of the corrugated spring (15) presses against the clamp (16), and the other end presses against the inner end face of the fastening end (14). Under the elastic force of the corrugated spring (15), the fastening end (14) can be manually pressed and rotated to overcome the elastic force of the corrugated spring (15) and screw the limiting post on the sealing cylinder (9) into the limiting hole of the fastening end (14) to achieve connection and fixation with the sealing cylinder (9). The clamp (16) and the clamp baffle B (17) are connected by a pin. After the clamp baffle B (17) is clamped, its inner diameter is smaller than that of the clamp (16), which can clamp and fix the detector (4). The detector (4) can be quickly disassembled by turning the clamp baffle B (17) outward around the pin shaft.

2. The connector sealing and protection structure as described in claim 1, characterized in that: An internal thread is machined on the inner wall of the tail connecting cylinder (13), and an external thread is machined on the outer wall of the locking nut (11) to match the internal thread of the tail connecting cylinder (13). The claw (12) is clamped onto the organic cable and outer sheath (1), and its edge is pressed and fixed by the locking nut (11); a tail connecting tube (13) is sleeved on the outside of the claw (12) and the locking nut (11), and the tail connecting tube (13) is connected to the locking nut (11) by threads.

3. The connector sealing and protection structure as described in claim 1, characterized in that: An annular limiting groove and an axial guide groove communicating with the annular limiting groove are machined on the inner wall of the sealing cylinder (9) near the connecting protective sleeve (10). The boss of the limiting end (7) enters the annular limiting groove from the axial guide groove of the sealing cylinder (9) to fix the sealing cylinder (9).

4. The connector sealing and protection structure as described in claim 1, characterized in that: An annular groove is machined on the outer wall of the end of the limiting end (7) near the connector plug (2) for placing the O-ring A (6) and fitting it against the inner wall of the sealing cylinder (9) to achieve a seal.

5. The connector sealing and protection structure as described in claim 1, characterized in that: An annular groove is machined on the inner wall of the other end of the sealing cylinder (9) for placing an O-ring B (8), and the sealing cylinder (9) and the socket (3) are sealed by the O-ring B (8).

6. The connector sealing and protection structure as described in claim 1, characterized in that: The limiting end (7) has two baffle grooves, which are symmetrically arranged circumferentially.

7. The connector sealing and protection structure as described in claim 1, characterized in that: A 1 / 4 pitch spiral channel and a limiting hole communicating with the end of the spiral channel are symmetrically machined on the side wall of the fastening end (14) near the sealing cylinder (9).

8. The connector sealing and protection structure as described in claim 7, characterized in that: The clamp baffle B (17) is arranged in a mirror-symmetrical manner in the baffle groove of the clamp (16).

9. The connector sealing and protection structure as described in claim 1, characterized in that: The connecting protective sleeve (10) and the tail connecting cylinder (13) are connected by circumferential welding.

10. The connector sealing and protection structure as described in claim 1, characterized in that: The limiting end (7) and the connecting protective sleeve (10) are connected by circumferential welding.

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