An explosion-proof cable connection protection device

Abstract

The present application discloses an explosion-proof cable connection protection device, comprising: a threading housing, a fireproof layer and an energy absorption component; a mounting cavity for connecting two wires is provided in the middle of the fireproof layer, and the two ends of the mounting cavity are in contact with the wires; the threading housing is sleeved on the fireproof layer; the energy absorption component includes two, and the two wires are connected respectively; the energy absorption component includes: a cylinder seat, a slider, an energy absorption elastic member and a plurality of rotating plates; the cylinder seat is fixed in the mounting cavity; the slider can be slidably sleeved on the wire and is located in the cylinder seat; both ends of the slider along the axial direction are connected to the cylinder seat through the energy absorption elastic member; the slider is provided with meshing teeth along the radial outer periphery; a plurality of rotating plates are distributed around the circumference of the slider, and the inner end of the rotating plate is meshed and connected with the slider, and the outer periphery is in contact with the fireproof layer. Through the energy absorption component, the shock wave generated by the explosion of the wire can be absorbed, and the explosion-proof connection stability of the device can be increased.

Description

Technical Field

[0001] The present application relates to the technical field of cable protection devices, and in particular to an explosion-proof cable connection protection device. Background Art

[0002] High-voltage cables used in transmission lines are in a high-voltage, high-current, and closed operating environment for a long time. In particular, the cable joints in the middle of the line are prone to temperature rise and even explosion due to their high contact resistance and poor heat dissipation conditions. If the manufacturing process of the cable joints is rough, the crimping joints are not tight, the contact resistance is too large, the cable insulation layer or cable core is damp, etc., it is more likely to cause the cable joints to explode, loosen, and cause fires.

[0003] In the prior art, explosion-proof shells are generally used as fire and explosion-proof methods for cable connectors. That is, the cable connector is clamped in the explosion-proof shell, so that when an explosion occurs, the explosion range can be controlled within the shell to achieve the purpose of fire and explosion prevention. However, the existing explosion-proof shells often have the problems of poor fire and explosion prevention effects and weak impact resistance. Under the action of impact force, an axial impact force will be generated on the connecting cable, forcing the connector to loosen or loosen, causing impact on the environment, and generating arcs to cause fires. Summary of the invention

[0004] In view of this, the purpose of the present application is to provide an explosion-proof cable connection protection device to solve the problem that the existing cable joint explosion-proof method has poor fire and explosion resistance.

[0005] In order to achieve the above technical objectives, the present application provides an explosion-proof cable connection protection device, comprising: a threading housing, a fireproof layer and an energy absorbing component;

[0006] The middle part of the fireproof layer is provided with an installation cavity for connecting two wires, and both ends of the installation cavity are in contact with the wires;

[0007] The wire threading housing is sleeved on the fireproof layer;

[0008] The energy absorbing components include two, and are respectively connected to the two wires;

[0009] The energy absorbing assembly comprises: a cylinder seat, a slider, an energy absorbing elastic member and a plurality of rotating plates;

[0010] The cartridge seat is fixed in the mounting cavity;

[0011] The slider can be slidably sleeved on the wire and is located in the cartridge seat;

[0012] Both ends of the slider along the axial direction of the wire are connected to the cartridge seat through the energy absorbing elastic member;

[0013] The slider is provided with meshing teeth along the radial outer periphery;

[0014] A plurality of rotating plates are distributed around the circumference of the slider, and the inner ends of the rotating plates are meshed and connected with the slider, and the outer circumferences are in contact with the fireproof layer.

[0015] Furthermore, the cross section of the fireproof layer along the radial direction is circular;

[0016] The rotating plate is in the shape of a flat plate fan with a flat-angle inner end.

[0017] Furthermore, gaps are provided between adjacent rotating plates.

[0018] Furthermore, a buffer cavity is provided inside the cartridge seat, and a through groove is provided on the surface;

[0019] The slider is arranged in the buffer cavity;

[0020] The inner end of the rotating plate passes through the through slot and is connected to the sliding block.

[0021] Furthermore, the energy absorbing assembly further comprises a plurality of support rods;

[0022] The cylinder seat is sleeved on the wire and connected to the fireproof layer through the support rod;

[0023] The plurality of support rods are evenly distributed around the circumference of the cylinder seat.

[0024] Further, it also includes a pressure relief column;

[0025] The fireproof layer is provided with inner perforations;

[0026] An outer through hole is provided on the threading housing at a position corresponding to the inner through hole;

[0027] The pressure relief column can movably penetrate the inner through hole and the outer through hole;

[0028] The pressure relief column is used to relieve pressure when the pressure in the installation cavity exceeds a preset pressure value.

[0029] Furthermore, a limiting ring is provided at the outer end of the pressure relief column, and an elastic rubber ring is provided at the inner end;

[0030] The limiting ring is used to limit the pressure relief column from entering the installation cavity;

[0031] The elastic rubber ring is used to limit the pressure relief column from sliding out of the outer perforation and the inner perforation when the pressure is less than the preset pressure value, and is used to shrink and be pushed by the pressure to make the pressure relief column slide out of the outer perforation and the inner perforation when the pressure is greater than the preset pressure value.

[0032] Further, a fire protection assembly is included;

[0033] A connector is provided at the connection point of the two wires;

[0034] The fireproof components include two, which are respectively arranged on both sides of the connector;

[0035] The fireproof assembly includes a puncture block and a fire extinguishing bag;

[0036] A slide groove is provided on the fireproof layer;

[0037] The puncturing block is slidably disposed in the slide groove along the axial direction;

[0038] The fire extinguishing bag is arranged on a side of the piercing block away from the connecting head.

[0039] Furthermore, a transverse groove is provided on the threading housing;

[0040] The chute is a longitudinal chute;

[0041] The transverse groove and the longitudinal groove are combined into a T-shaped groove;

[0042] The puncture block is a T-shaped slider;

[0043] The T-shaped slider can be slidably disposed in the T-shaped slot;

[0044] A puncture cone is arranged on one side of the T-shaped sliding block away from the connecting head.

[0045] Furthermore, the slider is provided with a through hole for the wire to pass through;

[0046] A plurality of groups of anti-slip rings are arranged in the through holes.

[0047] It can be seen from the above technical scheme that the present application provides an explosion-proof cable connection protection device, comprising: a wire threading shell, a fireproof layer and an energy absorption component; an installation cavity for connecting two wires is provided in the middle of the fireproof layer, and both ends of the installation cavity are in contact with the wires; the wire threading shell is sleeved on the fireproof layer; the energy absorption component includes two, and is respectively connected to the two wires; the energy absorption component includes: a cylinder seat, a slider, an energy absorption elastic member and a plurality of rotating plates; the cylinder seat is fixed in the installation cavity; the slider can be slidably sleeved on the wire and is located in the cylinder seat; both ends of the slider in the axial direction are connected to the cylinder seat through the energy absorption elastic member; the slider is provided with meshing teeth along the radial outer periphery; a plurality of rotating plates are distributed around the circumference of the slider, and the inner end of the rotating plate is meshed and connected with the slider, and the outer periphery is in contact with the fireproof layer. Through the energy-absorbing component, when the wire explodes, the rotating plate rotates due to the impact, thereby driving the slider to slide along the axial direction of the wire, and then compressing the energy-absorbing elastic part to convert the impact force into elastic potential energy, which plays a role in buffering and absorbing shock waves and increasing the explosion-proof connection stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0049] Figure 1 A schematic diagram of a wire threading housing of an explosion-proof cable connection protection device provided in an embodiment of the present application after being cut open;

[0050] Figure 2 A schematic diagram of the internal structure of an explosion-proof cable connection protection device provided in an embodiment of the present application;

[0051] Figure 3 A schematic diagram of the external structure of an explosion-proof cable connection protection device provided in an embodiment of the present application;

[0052] Figure 4 A disassembled diagram of a wire threading housing and a fireproof layer of an explosion-proof cable connection protection device provided in an embodiment of the present application;

[0053] Figure 5 A schematic diagram of an energy absorbing component of an explosion-proof cable connection protection device provided in an embodiment of the present application;

[0054] Figure 6 A semi-exploded diagram of an energy absorbing component of an explosion-proof cable connection protection device provided in an embodiment of the present application;

[0055] Figure 7 A schematic diagram of a slider and an energy-absorbing elastic member of an explosion-proof cable connection protection device provided in an embodiment of the present application;

[0056] Figure 8 An enlarged view of the position of a fireproof component of an explosion-proof cable connection protection device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0057] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection requested by the present application.

[0058] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0059] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0060] See also Figures 1 to 4 The explosion-proof cable connection protection device provided in the embodiment of the present application comprises: a threading housing 1, a fireproof layer 3 and an energy absorption component. An installation cavity for connecting two wires 16 is provided in the middle of the fireproof layer 3, and the two ends of the installation cavity are in contact with the wires 16; the threading housing 1 is sleeved on the fireproof layer 3.

[0061] Among them, the threading housing 1 can include two. The inner ends of the two threading housings 1 are bolted together by flange rings 101. The outer ends of the two threading housings 1 can be provided with a bucket-shaped explosion-proof tail shell 2 to form a structure with gradually contracted ends. Correspondingly, there can be two fireproof layers 3, and the outer ends of the two fireproof layers 3 can be provided with shake-shaped fireproof parts 4. Thereby, an installation cavity for installing the energy-absorbing component is formed in the middle of the fireproof layer 3, and the two outer ends can be sealed and connected with the wire 16. The threading housing 1 can be made of stainless steel, and the fireproof layer 3 can be made of a flame-retardant rubber pad made of fire-retardant material.

[0062] The energy absorbing components include two, and are respectively connected to two wires 16. The connection position of the two wires 16 can be sleeved with a connector 17.

[0063] See also Figure 2 and Figures 5 to 7 The energy absorption component includes: a cylinder seat 15, a slider 24, an energy absorption elastic member 28 and a plurality of rotating plates 22; the cylinder seat 15 is fixed in the mounting cavity; the slider 24 can be slidably sleeved on the wire 16 and is located in the cylinder seat 15; both ends of the slider 24 along the axial direction are connected to the cylinder seat 15 through the energy absorption elastic member 28; the slider 24 is provided with meshing teeth 25 along the radial outer periphery; a plurality of rotating plates 22 are distributed around the circumference of the slider 24, and the inner end of the rotating plate 22 is meshed and connected with the slider 24, and the outer periphery is in contact with the fireproof layer 3.

[0064] Specifically, the barrel seat 15 is used to support the energy-absorbing elastic members 28 at both ends of the slider 24. The energy-absorbing elastic member 28 can be in the form of a spring sleeved on the outer periphery of the telescopic rod. When an explosion occurs at the position of the connector 17, the rotating plate 22 rotates under the impact, and drives the slider 24 to slide through the meshing teeth 25, converting the impact force of the explosion into an elastic force on the energy-absorbing elastic member 28, playing a buffering role, thereby improving the explosion resistance inside the fireproof layer 3.

[0065] In one embodiment, the cross section of the fireproof layer 3 along the radial direction may be circular; accordingly, the rotating plate 22 is in the shape of a flat plate fan with a flat inner end.

[0066] Specifically, the inner end of the rotating plate 22 can be fixedly connected to the half gear shaft 23. The inner end of the half gear shaft 23 is a smooth end, which is fixedly connected to the rotating plate 22. The outer end of the half gear shaft 23 is provided with 180° straight teeth, which are meshed with the meshing teeth 25.

[0067] It should be noted that the rotating plates 22 can be four and evenly distributed around the circumference of the slider 24. The outer ends of the four rotating plates 22 are connected to form a circle and fit the fireproof layer 3.

[0068] In other embodiments, see Figure 5A gap 31 may be provided between adjacent rotating plates 24 to prevent the rotating member 24 from forming a closed structure, which may cause irreversible damage due to excessive thrust of the shock wave generated when the wire explodes.

[0069] In other embodiments, see Figure 5 and Figure 6 A buffer cavity 20 is provided inside the cartridge seat 15 , and a through groove 21 is provided on the surface thereof; a slider 24 is provided in the buffer cavity 20 ; and the inner end of the rotating plate 22 passes through the through groove 21 and is connected to the slider 24 .

[0070] The through groove 21 is arranged on the radial surface of the cartridge seat 25. The cartridge seat 25 can be a through structure, and sealing plates 18 can be arranged at both ends of the cartridge seat 25 in the axial direction. The buffer cavity 20 is formed by the sealing plates 18 arranged at both ends of the cartridge seat 25, and the energy absorbing elastic member 28 is connected through the sealing plates 28. Accordingly, the sealing plates 18 are provided with threading holes 19 for the wire 16 to pass through.

[0071] It should be noted that the cylinder seat 15 may be provided with multiple through holes 26 that penetrate in the axial direction. The two sealing plates 18 may be connected by a fixing rod 27 that passes through the through holes 26. The energy absorbing elastic member 28 may be a spring sleeved on the fixing rod 27.

[0072] In other embodiments, the energy absorbing assembly further includes a plurality of support rods 14 ; the cylinder seat 15 is sleeved on the wire 16 and connected to the fireproof layer 3 via the support rods 14 ; and the plurality of support rods 14 are evenly distributed around the circumference of the cylinder seat 15 .

[0073] The cartridge seat 15 may be in a square shape. The support rod 14 is disposed at a diagonal position of the cartridge seat 15 .

[0074] See also Figure 1 At Figure 4 A support rod groove 1401 can be provided on the fireproof layer 3 for the support rod 14 to penetrate.

[0075] In other embodiments, see Figure 1 and Figure 4 , and may also include a pressure relief column 7; an inner perforation 6 is provided on the fireproof layer 3; an outer perforation 5 is provided at a position corresponding to the inner perforation 6 on the threading housing 1; the pressure relief column 7 can movably penetrate the inner perforation 6 and the outer perforation 5; the pressure relief column 7 is used to relieve pressure when the pressure in the installation cavity exceeds a preset pressure value.

[0076] When the pressure in the installation cavity exceeds the preset pressure value, the pressure relief column 7 can be pushed to move away from the wire 16. A pressure relief hole that is closed under normal conditions can be provided on the pressure relief column 7. When the pressure relief column 7 moves away from the wire 16, the pressure relief hole opens to relieve pressure.

[0077] When the explosion pressure generated by the wire 16 is too large, it can be discharged through the pressure relief column 7. In conjunction with the energy-absorbing component, the shock wave generated by the explosion can be decomposed and absorbed layer by layer, reducing the impact on the environment. At the same time, the energy-absorbing elastic parts 28 on both sides of the slider 24 drive the slider 24 to slide toward the connector 17, thereby pushing the wire 16 to move toward the connector 17 in the opposite direction, avoiding the influence of axial external impact on the firm connection of the connector 17, and increasing the explosion-proof connection stability of the device.

[0078] Correspondingly, the slider 24 is provided with a through hole 29 for the wire 16 to pass through; a plurality of groups of anti-slip rings 30 are arranged in the through hole 29 , so as to increase the friction between the slider 24 and the wire 16 .

[0079] In this embodiment, a limiting ring is provided at the outer end of the pressure relief column 7, and an elastic rubber ring 701 is provided at the inner end; the limiting ring is used to limit the pressure relief column 7 from entering the installation cavity; the elastic rubber ring 701 is used to limit the pressure relief column 7 from sliding out of the outer perforation and the inner perforation when the pressure is less than the preset pressure value, and is used to shrink and be pushed by the pressure to make the pressure relief column 7 slide out of the outer perforation and the inner perforation when the pressure is greater than the preset pressure value.

[0080] When the pressure exceeds the preset pressure value, the elastic rubber ring 701 is deformed by the pressure and slides out through the inner through hole 6 and the outer through hole 5 to release the pressure, which also facilitates the subsequent resetting and installation.

[0081] In other embodiments, see Figure 8 , and can also include a fireproof component; the fireproof component includes two, and is respectively arranged on both sides of the connecting head 17; the fireproof component includes a piercing block 10 and a fire extinguishing bag 13; a slide groove 9 is arranged on the fireproof layer 3; the piercing block 10 is slidably arranged in the slide groove 9 along the axial direction; the fire extinguishing bag 13 is arranged on the side of the piercing block 10 away from the connecting head 17.

[0082] When an explosion occurs, the piercing block 10 is pushed by the explosion force to move toward the fire extinguishing bag 13, and the fire extinguishing bag 13 is opened to extinguish the fire. The fire extinguishing material in the fire extinguishing bag 13 can be sodium bicarbonate powder.

[0083] As a further improvement, a transverse groove 8 is provided on the threading housing 1; the slide groove 9 is a longitudinal groove; the transverse groove 8 and the longitudinal groove are combined into a T-shaped groove; the piercing block 10 is a T-shaped slider; the T-shaped slider can be slidably arranged in the T-shaped slot; a piercing cone 12 is provided on the side of the T-shaped slider away from the connector 17.

[0084] Among them, an easily punctured film can be provided on the side of the fire extinguishing bag 13 facing the puncturing cone 12. By providing an easily punctured film on the side of the fire bag 13, the puncturing cone 12 can stably puncture the fire extinguishing bag 13 during the explosion, thereby improving the sensitivity of the structural transfer reaction.

[0085] It should be noted that the T-slot may be provided with a spring connected to the piercing block 10 to prevent the piercing block 10 from piercing the fire extinguishing bag 13 due to shaking of the device.

[0086] The above are only preferred embodiments of the present application and are not intended to limit the present invention. Although the present application has been described in detail with reference to the examples, those skilled in the art can still modify the technical solutions recorded in the aforementioned examples or make equivalent substitutions for some of the technical features therein. However, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An explosion-proof cable connection protection device, characterized in that: include: Threading housing, fireproof layer and energy absorbing components; The middle part of the fireproof layer is provided with an installation cavity for connecting two wires, and both ends of the installation cavity are in contact with the wires; The wire threading housing is sleeved on the fireproof layer; The energy absorbing components include two, and are respectively connected to the two wires; The energy absorbing assembly comprises: a cylinder seat, a slider, an energy absorbing elastic member and a plurality of rotating plates; The cartridge seat is fixed in the mounting cavity; The slider can be slidably sleeved on the wire and is located in the cartridge seat; Both ends of the slider along the axial direction of the wire are connected to the cartridge seat through the energy absorbing elastic member; The slider is provided with meshing teeth along the radial outer periphery; A plurality of rotating plates are distributed around the circumference of the slider, and the inner ends of the rotating plates are meshed and connected with the slider, and the outer circumferences are in contact with the fireproof layer.

2. The explosion-proof cable connection protection device according to claim 1, characterized in that: The cross section of the fireproof layer along the radial direction is circular; The rotating plate is in the shape of a flat plate fan with a flat angle at the inner end.

3. The explosion-proof cable connection protection device according to claim 1, characterized in that: A gap is arranged between adjacent rotating plates.

4. The explosion-proof cable connection protection device according to claim 1, characterized in that: The cylinder seat is provided with a buffer cavity inside and a through groove on the surface; The slider is arranged in the buffer cavity; The inner end of the rotating plate passes through the through slot and is connected to the sliding block.

5. The explosion-proof cable connection protection device according to claim 1, characterized in that: The energy absorbing assembly also includes a plurality of support rods; The cylinder seat is sleeved on the wire and connected to the fireproof layer through the support rod; The plurality of support rods are evenly distributed around the circumference of the cylinder seat.

6. The explosion-proof cable connection protection device according to claim 1, characterized in that: Also included are pressure relief columns; The fireproof layer is provided with inner perforations; An outer through hole is provided on the threading housing at a position corresponding to the inner through hole; The pressure relief column can movably penetrate the inner through hole and the outer through hole; The pressure relief column is used to relieve pressure when the pressure in the installation cavity exceeds a preset pressure value.

7. The explosion-proof cable connection protection device according to claim 6, characterized in that: The outer end of the pressure relief column is provided with a limiting ring, and the inner end is provided with an elastic rubber ring; The limiting ring is used to limit the pressure relief column from entering the installation cavity; The elastic rubber ring is used to limit the pressure relief column from sliding out of the outer perforation and the inner perforation when the pressure is less than the preset pressure value, and is used to shrink and be pushed by the pressure to make the pressure relief column slide out of the outer perforation and the inner perforation when the pressure is greater than the preset pressure value.

8. The explosion-proof cable connection protection device according to claim 1, characterized in that: Also included are fire-resistant components; A connector is provided at the connection point of the two wires; The fireproof components include two, which are respectively arranged on both sides of the connector; The fireproof assembly includes a puncture block and a fire extinguishing bag; The fireproof layer is provided with a slide groove; The puncturing block is slidably disposed in the slide groove along the axial direction; The fire extinguishing bag is arranged on a side of the piercing block away from the connecting head.

9. The explosion-proof cable connection protection device according to claim 8, characterized in that: The threading housing is provided with a transverse groove; The chute is a longitudinal chute; The transverse groove and the longitudinal groove are combined into a T-shaped groove; The puncture block is a T-shaped slider; The T-shaped slider can be slidably disposed in the T-shaped slot; A puncture cone is arranged on one side of the T-shaped sliding block away from the connecting head.

10. The explosion-proof cable connection protection device according to claim 1, characterized in that: The slider is provided with a through hole for the wire to pass through; A plurality of groups of anti-slip rings are arranged in the through holes.

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