A protection device and method for a cable joint

Abstract

The application discloses a protection device and method for cable joint, which comprises a left protection shell, a right protection shell fixedly assembled on the right side of the left protection shell, and a cable joint placed in the left protection shell and the right protection shell; sliding blocks symmetrically arranged into two groups are coaxially and slidingly assembled on the outer sides of the left protection shell and the right protection shell, and the inner sides of the sliding blocks are fixedly assembled on the cables, and compression springs are fixedly assembled on the outer side planes of the sliding blocks, the compression springs are placed in the left protection shell or the right protection shell, and the other ends of the compression springs are fixedly assembled on the inner walls of the outer ends of the left protection shell or the right protection shell; an opening knob is coaxially and rotationally assembled on the right side of the left protection shell, and a locking opening and closing assembly is fixedly assembled in the opening knob; and a heat dissipation and combustion prevention assembly is embedded on the inner wall of the left end of the right protection shell.

Description

Technical Field

[0001] This invention relates to the field of cable technology, and more specifically to a protective device and method for cable joints. Background Technology

[0002] Cable joints, also known as cable terminations, are used to secure and fix incoming and outgoing cables after they have been laid, forming a continuous cable line. These connection points are called cable joints. Cable joints located in the middle of a cable line are called intermediate joints, while those at the ends of the line are called terminal joints. Cable joints are used to lock and secure the incoming and outgoing cables, and also serve to protect against water, dust, and vibration.

[0003] Existing cable joints often experience overheating during operation, and in severe cases, they may even spontaneously combust, which greatly affects the efficiency and safety of power transmission. At the same time, cable joints installed at high altitudes are prone to swaying in windy weather, which can cause cable wear or loosening, thus posing significant safety hazards.

[0004] Therefore, it is necessary to provide a protective device for cable joints to solve the above problems. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a protective device for cable joints, comprising:

[0006] A left protective shell, with a right protective shell fixedly mounted on its right side, and cable connectors are placed inside the left and right protective shells;

[0007] Two sets of sliding blocks are symmetrically arranged and are coaxially slidably mounted on the outside of the left and right protective shells, respectively. Their inner sides are fixedly mounted on the cable. A compression spring is fixedly mounted on the outer plane of the sliding block. The compression spring is placed inside the left or right protective shell, and its other end is fixedly mounted on the inner wall of the outer end of the left or right protective shell.

[0008] Turn on the knob and rotate it coaxially on the right side of the left protective shell. A locking and opening assembly is fixedly installed inside the shell.

[0009] A heat dissipation and flame-retardant component is embedded in the inner wall of the left end of the right protective shell.

[0010] Furthermore, as a preferred embodiment, a fixing plate is provided on the right side of the left protective shell and in the middle of the right protective shell, and a heat dissipation vent is provided at the bottom of the right protective shell.

[0011] Furthermore, preferably, the locking opening and closing assembly includes:

[0012] The drive gear is coaxially fixed to the inner wall of the opening knob;

[0013] The transmission gears are arranged in n sets around the circumference, all of which are rotatably mounted on the outer wall of the right side of the left protective shell. The transmission gears mesh with the drive gears, and a rotating lead screw is fixed coaxially at the lower end of the transmission gears.

[0014] Furthermore, as a preferred embodiment, the outer wall of the left protective shell is provided with n sets of holes and slots coaxial with the transmission gear, in which a sliding piston is slidably assembled. A horizontal hole and slot perpendicular to the hole and slot is provided on the lower side of the hole and slot, in which a locking rod is placed. The sliding piston is threadedly assembled on the rotating screw.

[0015] Furthermore, as a preferred embodiment, the locking rod is fixedly mounted on the left side plane of the right protective shell, and a locking plate is provided on its surface. A locking spring is fixedly mounted between the right side of the locking plate and the locking rod, and the locking spring is coaxial with the sliding piston.

[0016] Furthermore, preferably, the heat dissipation and flame-retardant component includes:

[0017] The gas receiving box is fixedly mounted on the inner wall of the left side of the right protective shell. Two sets of first hydraulic cylinders and second hydraulic cylinders are fixedly mounted on its two side planes respectively. A heat dissipation conversion block is fixedly mounted on the piston end of the first hydraulic cylinder. The heat dissipation conversion block is slidably embedded in the inner wall of the right protective shell.

[0018] Furthermore, as a preferred embodiment, both the first hydraulic cylinder and the second hydraulic cylinder are equipped with hydraulic cylinder start valves, and a humidity detection device is provided between the two sets of hydraulic cylinder start valves. The humidity detection device is embedded in the outer wall of the right protective shell.

[0019] Furthermore, as a preferred embodiment, two sets of carbon dioxide fire extinguishers are placed at both ends of the gas receiving box in a mirror-like arrangement, and the two sets of carbon dioxide fire extinguishers are fixedly assembled on the inner wall of the right protective shell.

[0020] Furthermore, as a preferred embodiment, a fire extinguisher activation valve is fixedly mounted on the other end of the heat dissipation conversion block.

[0021] A method for protecting cable joints includes the following steps:

[0022] S1. Install the left and right protective shells onto the cables that need to be connected;

[0023] S2. Select a suitable cable connector to connect the two cables, and adjust the position of the right protective shell so that the right end of the cable connector is fixed on the fixing plate of the right protective shell, and reserve a suitable length of cable inside the right protective shell.

[0024] S3. Adjust the left protective shell to the appropriate position and insert it into the locking bar on the left protective shell to lock it in place;

[0025] S4. When there is strong wind outside, the wind-driven device will extend the excess cable inside by compressing the spring, thereby counteracting the effect of the wind and preventing the cable joint from being blown off.

[0026] S5. When the cable joint gets hot, the heat dissipation and fire prevention components are used to dissipate heat and prevent fire damage to the cable joint.

[0027] S6. When it is necessary to inspect or replace the cable connector, gently turn the opening knob to open the locking assembly, pull out the left and right protective shells to fully expose the cable connector, and reset it after the work is completed.

[0028] Compared with the prior art, the present invention provides a protective device and method for cable joints, which has the following beneficial effects:

[0029] In this invention, compression springs and sliding blocks are provided at both ends of the device. The device also has a pre-installed cable of extra length. When strong winds occur, the excess cable inside the device is compressed and extended by the compression springs, thus counteracting the wind's force and preventing wear or separation of the cable from the connector during swinging. The device is equipped with a locking and opening assembly to ensure its airtightness and prevent water from entering and damaging the cable connector. This assembly can also be opened for easy inspection and adjustment by personnel. Furthermore, the device is equipped with a heat dissipation and fire-resistant assembly with a two-stage heat dissipation and fire-resistant system, effectively avoiding the problems of low heat dissipation efficiency or high energy consumption associated with single-mode systems. The device also includes a humidity detection device; when the external humidity is high, secondary heat dissipation is activated directly to prevent moisture from entering the device through the primary heat dissipation vents, thus preventing safety hazards and unnecessary damage. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a protective device for cable joints;

[0031] Figure 2 This is a schematic diagram of a locking and opening / closing assembly for a protective device used for cable joints.

[0032] Figure 3 This is a schematic diagram of a heat dissipation and flame-retardant component structure for a protective device used in cable joints.

[0033] Figure 4 A schematic diagram of a heat dissipation conversion block structure for a protective device used in cable joints;

[0034] In the diagram: 1. Left protective shell; 2. Right protective shell; 3. Cable connector; 4. Sliding block; 5. Compression spring; 6. Opening knob; 7. Locking opening and closing assembly; 8. Heat dissipation and fireproof assembly; 9. Fixing plate; 10. Heat dissipation vent; 71. Drive gear; 72. Transmission gear; 73. Rotating screw; 74. Sliding piston; 75. Locking rod; 76. Locking plate; 77. Locking spring; 81. Gas receiving box; 82. First hydraulic cylinder; 83. Second hydraulic cylinder; 84. Heat dissipation conversion block; 85. Carbon dioxide fire extinguisher; 86. Hydraulic cylinder starting valve; 87. Humidity detection device; 88. Fire extinguisher starting valve. Detailed Implementation

[0035] Please see Figures 1-4 The present invention provides a protective device for cable joints, comprising:

[0036] A left protective shell 1, with a right protective shell 2 fixedly mounted on its right side, and a cable connector 3 is placed inside the left protective shell 1 and the right protective shell 2;

[0037] Sliding blocks 4 are symmetrically arranged in two groups, which are coaxially slidably mounted on the outside of the left protective shell 1 and the right protective shell 2 respectively. Their inner sides are fixedly mounted on the cable. A compression spring 5 is fixedly mounted on the outer plane of the sliding block 4. The compression spring 5 is placed inside the left protective shell 1 or the right protective shell 2, and its other end is fixedly mounted on the inner wall of the outer end of the left protective shell 1 or the right protective shell 2.

[0038] Turn on the knob 6 and rotate it coaxially on the right side of the left protective shell 1. A locking opening and closing assembly 7 is fixedly installed inside it.

[0039] The heat dissipation and flame-retardant component 8 is embedded in the inner wall of the left end of the right protective shell 2;

[0040] As a preferred embodiment, when there is strong wind, the wind blows the device, causing the cable to swing. The compression spring 5 causes the sliding block 4 to slide, allowing the excess cable inside to extend out, thereby counteracting the effect of the wind and preventing the cable from being worn or separated from the cable joint 3 during the swing. This avoids cable loss under harsh conditions to a certain extent, greatly improves the safety performance of the device, and reduces safety hazards.

[0041] Furthermore, a fixing plate 9 is provided on the right side of the left protective shell 1 and in the middle of the right protective shell 2, and a heat dissipation vent 10 is provided at the bottom of the right protective shell 2;

[0042] In a preferred embodiment, the position of the heat dissipation vent 10 corresponds to the heat dissipation and flame-retardant component 8, and the fixing plate 9 can firmly fix the cable connector 3 in the center of the device, so that the heat of the cable connector 3 can be effectively discharged from the heat dissipation vent 10, thereby improving the heat dissipation efficiency and increasing the service life of the cable connector 3.

[0043] Furthermore, the locking and opening / closing assembly 7 includes:

[0044] The drive gear 71 is coaxially fixed on the inner wall of the opening knob 6;

[0045] The transmission gear 72 has n sets arranged around its circumference, all of which are rotatably mounted on the outer wall of the right side of the left protective shell 1. The transmission gear 72 meshes with the drive gear 71, and a rotating lead screw 73 is coaxially fixed at the lower end of the transmission gear 72.

[0046] Furthermore, the outer wall of the left protective shell 1 is provided with n sets of holes and slots coaxial with the transmission gear 72, and a sliding piston 74 is slidably assembled in them. A horizontal hole and slot perpendicular to it is provided on the lower side of the hole and slot, and a locking rod 75 is placed in it. The sliding piston 74 is threadedly assembled on the rotating screw 73, and the sliding piston 74 and the hole and slot will not rotate.

[0047] Furthermore, the locking rod 75 is fixedly mounted on the left side plane of the right protective shell 2, and a locking plate 76 is provided on its surface. A locking spring 77 is fixedly mounted between the right side of the locking plate 76 and the locking rod 75, and the locking spring 77 is coaxial with the sliding piston 74.

[0048] In a preferred embodiment, during assembly, the position of the right protective shell 2 is fixed first, and then the left protective shell 1 is rotated to the corresponding position and pushed to the right, so that the locking rod 75 fixed on the right protective shell 2 can be inserted into the horizontal slot of the left protective shell 1. The horizontal slot of the left protective shell 1 is stepped, with its entrance diameter equal to the diameter of the locking rod 75, and its inner diameter slightly larger than the diameter of the locking rod 75. During the pushing of the left protective shell 1, the locking plate 76 is subjected to force, causing the locking spring 77 to compress. The locking plate 76 gradually becomes coaxial with the locking rod 75. When the left protective shell 1 is pushed to its limit position, the locking rod 75 is completely inserted into the left protective shell 1, the locking spring 77 springs up, and the locking plate 76 rotates relative to the connection point. The locking rod 75 is locked inside the left protective shell 1, ensuring the sealing of the device and preventing the left protective shell 1 from separating from the right protective shell 2 under external force, which could damage the cable connector 3. When it is necessary to inspect or replace the cable connector 3, gently turn the opening knob 6. The opening knob 6 drives the drive gear 71 to rotate synchronously, and the transmission gear 72 meshing with it rotates. The rotating screw 73 rotates synchronously with the transmission gear 72, and the sliding piston 74 meshing with it moves downward, pushing the locking plate 76 to compress the locking spring 77 for reset. After rotating a certain angle, the locking plate 76 and the locking rod 75 are coaxial, and the left protective shell 1 is pushed to the left to complete the opening of the device. After the operation is completed, the device is reset.

[0049] Furthermore, the heat dissipation and flame-retardant component 8 includes:

[0050] Gas receiving box 81 is fixedly mounted on the inner wall of the left side of the right protective shell 2. Two sets of first hydraulic cylinders 82 and second hydraulic cylinders 83 are fixedly mounted on its two side planes respectively. A heat dissipation conversion block 84 is fixedly mounted on the piston end of the first hydraulic cylinder 82. The heat dissipation conversion block 84 is slidably embedded in the inner wall of the right protective shell 2.

[0051] In a preferred embodiment, the gas receiving box 81 is filled with a certain volume of special gas. This gas does not change at room temperature, but expands to a certain extent when the internal temperature of the device rises. The heat dissipation conversion block 84 is divided into three regions: A, B, and C. The outer ring plane area in the middle of the three regions is equal, and is equal to the inner ring area of ​​the heat dissipation vent 10 region. In the initial state, the first hydraulic cylinder 82 and the second hydraulic cylinder 83 are both in a fully retracted state, and region A completely covers the area of ​​the heat dissipation vent 10. At this time, the device is in a closed state. When the internal temperature of the device begins to rise, the gas in the gas receiving box 81 expands due to heat, the hydraulic cylinder start valve 86 of the first hydraulic cylinder 82 opens, and the first hydraulic cylinder 82 extends. The heat dissipation conversion block 84 is rotated clockwise, causing the heat dissipation vents 10 to gradually open for heat dissipation. When the first hydraulic cylinder 82 is fully extended, area B completely overlaps with the area of ​​the heat dissipation vents 10, at which point the heat dissipation vents 10 are fully open. If the temperature continues to rise, this heat dissipation method cannot meet the heat dissipation requirements, so the second hydraulic cylinder of the first hydraulic cylinder 82 continues to extend, pushing the heat dissipation conversion block 84 to continue rotating, and the heat dissipation vents 10 gradually close. When the first hydraulic cylinder 82 extends to its limit, area C completely overlaps with the area of ​​the heat dissipation vents 10, and the heat dissipation vents 10 are fully closed, starting the next stage of the heat dissipation process (the gas required for the first hydraulic cylinder 82 to push the second hydraulic cylinder is much less than the gas required to push the first hydraulic cylinder).

[0052] Furthermore, both the first hydraulic cylinder 82 and the second hydraulic cylinder 83 are provided with hydraulic cylinder start valves 86, and a humidity detection device 87 is provided between the two sets of hydraulic cylinder start valves 86. The humidity detection device 87 is embedded in the outer wall of the right protective shell 2.

[0053] In a preferred embodiment, to prevent water vapor from entering the device and causing a short circuit in the cable when the heat dissipation vent 10 is open due to high external humidity, a humidity detection device 87 is added. The humidity detection device 87 can detect the humidity of the outside air in real time and control the opening and closing of the hydraulic cylinder start valve 86 on the first hydraulic cylinder 82 and the second hydraulic cylinder 83. When the external humidity is low, the hydraulic cylinder start valve 86 of the first hydraulic cylinder 82 remains open, and the hydraulic cylinder start valve 86 of the second hydraulic cylinder 83 remains closed, and vice versa. In addition, the humidity detection device 87 has a built-in chip that can feed back the temperature changes inside the device to the main computer in real time, alerting the staff so that they can promptly check the cause of the overheating of the cable connector 3, identify potential safety hazards, and thus avoid accidents.

[0054] Furthermore, two sets of carbon dioxide fire extinguishers 85 are placed at both ends of the gas receiving box 81 in a mirror-like arrangement, and the two sets of carbon dioxide fire extinguishers 85 are fixedly assembled on the inner wall of the right protective shell 2.

[0055] Furthermore, a fire extinguisher activation valve 88 is fixedly mounted on the other end of the heat dissipation conversion block 84;

[0056] In a preferred embodiment, the gas inside the gas receiving box 81 expands when heated. If the humidity detection device 87 detects normal operation, the first hydraulic cylinder 82 pushes the heat dissipation conversion block 84 for first-stage heat dissipation. If the first-stage heat dissipation reaches its limit, the fire extinguisher activation valve 88 contacts the second hydraulic cylinder 83 and opens, causing the carbon dioxide fire extinguisher 85 to operate and cool down. At the same time, if the humidity detection device 87 detects that the external humidity is high, the hydraulic cylinder activation valve 86 of the second hydraulic cylinder 83 opens. When the internal temperature rises to a certain level, the second hydraulic cylinder 83 extends to its limit and contacts the fire extinguisher activation valve 88, causing it to open, and the fire extinguisher activation valve 88 operates and cools down.

[0057] A method for protecting cable joints includes the following steps:

[0058] S1. Install the left protective shell 1 and the right protective shell 2 onto the cables that need to be connected;

[0059] S2. Select a suitable cable connector 3 to connect the two cables, and adjust the position of the right protective shell 2 so that the right end of the cable connector 3 is fixed on the fixing plate 9 of the right protective shell 2, and reserve a suitable length of cable inside the right protective shell 2.

[0060] S3. Adjust the left protective shell 1 to a suitable position and insert it into the locking rod 75 on the left protective shell 1 to lock the locking rod 75.

[0061] S4. When there is strong wind outside, the wind-blown device will extend the excess cable inside by compressing the spring 5, thereby counteracting the effect of the wind and preventing the cable joint 3 from being blown off.

[0062] S5. When the cable joint 3 gets hot, the heat dissipation and fire prevention components 8 are used to dissipate heat and prevent fire, so as to prevent the cable joint 3 from being damaged by overheating;

[0063] S6. When it is necessary to inspect or replace the cable connector 3, gently turn the opening knob 6 to open the locking opening and closing assembly 7, pull out the left protective shell 1 and the right protective shell 2 to fully expose the cable connector 3, and reset it after the work is completed.

[0064] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A protective device for cable joints, characterized in that: include: A left protective shell (1) is fixedly fitted with a right protective shell (2) on its right side, and a cable connector (3) is placed inside the left protective shell (1) and the right protective shell (2); Sliding blocks (4) are symmetrically arranged in two groups, which are coaxially slidably mounted on the outside of the left protective shell (1) and the right protective shell (2), respectively. Their inner sides are fixedly mounted on the cable, and a compression spring (5) is fixedly mounted on the outer plane of the sliding block (4). The compression spring (5) is placed inside the left protective shell (1) or the right protective shell (2), and its other end is fixedly mounted on the inner wall of the outer end of the left protective shell (1) or the right protective shell (2). Turn on the knob (6), which is coaxially rotated on the right side of the left protective shell (1), and a locking opening and closing assembly (7) is fixedly installed inside it; A heat dissipation and flame-retardant component (8) is embedded in the inner wall of the left end of the right protective shell (2); The locking and opening assembly (7) includes: The drive gear (71) is coaxially fixed on the inner wall of the opening knob (6); The transmission gear (72) has n sets arranged around its circumference, all of which are rotatably mounted on the outer wall of the right side of the left protective shell (1). The transmission gear (72) meshes with the drive gear (71), and the lower end of the transmission gear (72) is coaxially fixed with a rotating lead screw (73). The outer wall of the left protective shell (1) is provided with n sets of holes and slots coaxial with the transmission gear (72), and a sliding piston (74) is slidably assembled in them. A horizontal hole and slot perpendicular to it is provided on the lower side of the hole and slot, and a locking rod (75) is placed in it. The horizontal hole and slot is stepped, and its inlet diameter is equal to the diameter of the locking rod (75), and its inner diameter is slightly larger than the diameter of the locking rod (75). The sliding piston (74) is threadedly assembled on the rotating screw (73). The locking bar (75) is fixedly mounted on the left side plane of the right protective shell (2), and a locking plate (76) is provided on its surface. A locking spring (77) is fixedly mounted between the right side of the locking plate (76) and the locking bar (75), and the locking spring (77) is coaxial with the sliding piston (74).

2. The protective device for cable joints according to claim 1, characterized in that: Fixing plates (9) are provided on the right side of the left protective shell (1) and in the middle of the right protective shell (2), and heat dissipation holes (10) are provided at the bottom of the right protective shell (2).

3. A protective device for cable joints according to claim 1, characterized in that: The heat dissipation and flame-retardant component (8) includes: The gas receiving box (81) is fixedly mounted on the inner wall of the left side of the right protective shell (2). Two sets of first hydraulic cylinders (82) and second hydraulic cylinders (83) are fixedly mounted on its two sides respectively. The piston end of the first hydraulic cylinder (82) is fixedly mounted with a heat dissipation conversion block (84), which is slidably embedded in the inner wall of the right protective shell (2).

4. A protective device for cable joints according to claim 3, characterized in that: Both the first hydraulic cylinder (82) and the second hydraulic cylinder (83) are equipped with hydraulic cylinder start valves (86), and a humidity detection device (87) is provided between the two sets of hydraulic cylinder start valves (86). The humidity detection device (87) is embedded in the outer wall of the right protective shell (2).

5. A protective device for cable joints according to claim 3, characterized in that: Two sets of carbon dioxide fire extinguishers (85) are placed at both ends of the gas receiving box (81) and are fixedly mounted on the inner wall of the right protective shell (2).

6. A protective device for cable joints according to claim 3, characterized in that: The other end of the heat dissipation conversion block (84) is fixedly equipped with a fire extinguisher activation valve (88).

7. A method for protecting cable joints, employing a protective device for cable joints as described in claim 2, characterized in that: Includes the following steps: S1. Place the left protective shell (1) and the right protective shell (2) onto the cable to be connected; S2. Select a suitable cable connector (3) to connect the two cables, and adjust the position of the right protective shell (2) so that the right end of the cable connector (3) is fixed on the fixing plate (9) of the right protective shell (2), and reserve a suitable length of cable inside the right protective shell (2); S3. Adjust the left protective shell (1) to a suitable position and insert it into the locking rod (75) on the right protective shell (2), and lock the locking rod (75) in place; S4. When there is strong wind outside, the wind blows the device, and the compression spring (5) will cause the excess cable inside to extend out, thereby offsetting the effect of the wind and preventing the cable joint (3) from being blown off. S5. When the cable joint (3) gets hot, the heat dissipation and fire prevention components (8) are used to dissipate heat and prevent fire, so as to prevent the cable joint (3) from overheating and being damaged. S6. When it is necessary to inspect or replace the cable connector (3), turn the opening knob (6) slightly to open the locking opening and closing assembly (7), pull out the left protective shell (1) and the right protective shell (2) to fully expose the cable connector (3), and reset it after the work is completed.

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