A self-cooling cable

Abstract

The present invention discloses a self-cooling cable, which belongs to the field of cables. A self-cooling cable includes three groups of cables, a protective layer wrapped around the outer periphery of the cables, and a support frame located between the cables and the protective layer; a ventilation cavity is provided in the support frame; a clamp is evenly installed on the outer wall of the protective layer; the clamp is composed of two relatively rotating clamping halves; the clamping halves include an outer shell, a feed pipe installed in the outer shell, and a fan providing airflow into the feed pipe; a drill bit for piercing the protective layer is provided at the front end of the feed pipe; and a side port that can be connected to the ventilation cavity is provided on the side wall of the feed pipe. This solution accelerates the cooling speed of the cable by evenly installing the clamp on the protective layer so that two adjacent clamps form a complete gas flow path. In addition, the overheated position can be cooled in a targeted manner according to the heating conditions of the cables at different positions, while the clamps at other positions do not need to work, which is convenient to operate.

Description

Technical Field

[0001] The invention belongs to the field of cables, and more particularly, relates to a self-cooling cable. Background Art

[0002] For ease of use and laying, three groups of cables are usually combined into one cable, resulting in a larger cable diameter. The heat dissipated by the cable during operation will be concentrated inside the cable and difficult to dissipate. Existing products set the heat dissipation cavity inside the cable and fill it with cooling medium to cool it down. However, the length of the entire cable is too long, making it difficult to achieve heat dissipation in the middle of the cable, resulting in low overall heat dissipation efficiency. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a self-cooling cable, which can realize segmented cooling of the cable and improve the cooling efficiency.

[0004] A self-cooling cable of the present invention comprises three groups of cables, a protective layer wrapped around the outer periphery of the cables, and a support frame located between the cables and the protective layer; the support frame is provided with a ventilation cavity; clamps are evenly installed on the outer wall of the protective layer; the clamp is composed of two relatively rotating clamping halves; the clamping halves include an outer shell, a feed pipe installed in the outer shell, and a fan providing airflow into the feed pipe; a drill bit for piercing the protective layer is provided at the front end of the feed pipe; and a side port that can be communicated with the ventilation cavity is provided on the side wall of the feed pipe.

[0005] As a further improvement of the present invention, a semicircular bayonet is provided on one side of the shell; and the feed pipe is directly opposite to the bayonet.

[0006] As a further improvement of the present invention, a positioning sleeve coaxial with the feed pipe is arranged in the shell; a thread groove is arranged on the inner wall of the positioning sleeve; and an external thread matching with the thread groove is arranged on the outer wall of the feed pipe.

[0007] As a further improvement of the present invention, the protective layer includes an insulating layer, a shielding layer, and a heat-insulating layer; three positioning rings are circumferentially arranged on the support frame; and one positioning ring accommodates one cable.

[0008] As a further improvement of the present invention, a feed gear coaxially arranged with the feed pipe and driving the feed pipe to rotate circumferentially is rotatably connected inside the shell; a motor driving the feed gear to rotate is fixedly connected inside the shell; a photovoltaic panel is arranged on the side wall of the shell; and a lithium battery is installed inside the shell.

[0009] As a further improvement of the present invention, a switching gear capable of engaging with a feed gear is rotatably connected inside the outer shell; a support plate is provided on the switching gear, which can abut against the feed pipe and thereby cause the switching gear to move axially; when the switching gear is located on the rear side, the switching gear is engaged with the feed gear; when the feed pipe is inserted into the ventilation cavity, the feed pipe pushes the switching gear to move to the front side, and the switching gear is separated from the feed gear.

[0010] As a further improvement of the present invention, a vent seat is slidably connected inside the shell and is sleeved on the outer circumference of the feed pipe and communicated with the inside of the feed pipe; the vent seat and the feed pipe rotate relative to each other in the circumferential direction and move synchronously in the axial direction; the vent seat cooperates with the fan.

[0011] As a further improvement of the present invention, the feed gear slides axially in the housing; when the feed gear and the switching gear are both located at the front side, the feed gear is meshed with the switching gear.

[0012] As a further improvement of the present invention, a clamping column is provided on the outer wall of the shell; a fixed plate is rotatably connected to the outer wall of the shell; a fixing groove which can be clamped with a clamping column on another shell is provided at an eccentric position of the fixed plate; a synchronization slot is provided on the side wall of the feed gear; a synchronization frame which is slidably connected to the inside of the shell and is plugged into the synchronization slot; a synchronization block is provided on the synchronization frame; and a push plate which can resist the synchronization block and thereby push the synchronization frame to move is provided on the fixed plate.

[0013] As a further improvement of the present invention, a shell is fixedly connected inside the outer shell; the fan is rotatably connected inside the shell; an air inlet is provided on the side wall of the outer shell opposite to the shell; and the motor is drivingly connected to the fan.

[0014] Compared with the prior art, the beneficial effect of the present invention is that by providing a support frame, a ventilation cavity is provided in the protective layer, which facilitates targeted cooling of the cable and prevents the cable from overheating. The cable in this solution is usually laid outside and exposed to sunlight.

[0015] This solution evenly installs the clamps on the protective layer so that two adjacent clamps form a complete gas flow path, which speeds up the cooling of the cable. In addition, the overheated position can be cooled according to the heating conditions of the cables at different positions, while the clamps at other positions do not need to work, which is easy to operate and avoids energy waste.

[0016] In this solution, the feed pipe is rotated so that the drill bit can pierce the protective layer and be inserted into the ventilation cavity, thereby enabling the clamp to be installed at any position of the entire cable.

[0017] In this solution, by switching the axial movement of the gear, the motor can drive the fan to rotate to generate airflow for cooling, and can also drive the feed pipe to rotate to facilitate insertion into the ventilation cavity.

[0018] The feed pipe in this solution can be inserted into the ventilation cavity by axial movement, and the feed pipe can also drive the switching gear to move axially through the ventilation seat, so that after the feed pipe is inserted into the ventilation cavity, the switching gear is separated from the feed gear, and then the motor only drives the fan to work.

[0019] The present scheme sets up a fixing plate, so that the fixing plate can relatively fix the two clamping halves on the protective layer through the cooperation of the clamping column and the fixing groove; the fixing plate can also control the axial movement of the feed gear through the cooperation of the push plate and the synchronization frame, so that when the feed gear is located on the front side, the motor can drive the feed pipe away from the ventilation cavity, thereby facilitating the disassembly of the clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0022] Figure 3 It is a schematic diagram of the decomposition structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure when the feed pipe of the present invention is located in the ventilation cavity;

[0024] Figure 5 It is a structural schematic diagram of the clamp of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of the feed pipe of the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the housing of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the first viewing angle of the clamp of the present invention in the initial state;

[0028] Fig. 9 It is a structural schematic diagram of the second viewing angle of the clamp of the present invention in the initial state;

[0029] Fig.10 It is a schematic diagram of the structure when the feed gear and the switching gear of the present invention are both located at the rear side;

[0030] Fig.11 It is a schematic diagram of the structure when the feed gear and the switching gear are both located at the front side of the present invention.

[0031] Description of the numbers in the figure:

[0032] 1. Cable; 2. Protective layer; 21. Insulating layer; 22. Shielding layer; 23. Insulating layer; 3. Support frame; 31. Positioning ring; 32. Ventilation cavity; 4. Clamp; 40. Clamping half; 41. Shell; 411. Bayonet; 412. Air inlet; 413. Photovoltaic panel; 414. Lithium battery; 415. Clamping column; 416. Positioning sleeve; 417. Threaded groove; 42. Fixing plate; 421. Fixing groove; 422. Push plate; 51. Feed pipe; 511. Drill bit; 512 , side port; 513, external thread; 514, feed socket; 52, vent seat; 53, feed gear; 531, feed plug column; 532, synchronization slot; 54, switching gear; 541, abutment plate; 542, switching socket; 55, return spring; 56, drive column; 561, drive gear; 61, housing; 611, air outlet; 62, fan; 621, fan gear; 63, transmission gear; 71, motor; 72, connecting gear; 8, synchronization frame; 81, synchronization block. DETAILED DESCRIPTION

[0033] Specific embodiment 1: Please refer to Figure 1-Figure 11 A self-cooling cable comprises three groups of cables 1, a protective layer 2 wrapped around the outer periphery of the cables 1, and a support frame 3 located between the cables 1 and the protective layer 2; the support frame 3 has a ventilation cavity 32; the outer wall of the protective layer 2 is evenly installed with clamps 4; the clamp 4 is composed of two relatively rotating clamping halves 40; the clamping halves 40 include an outer shell 41, a feed pipe 51 installed in the outer shell 41, and a fan 62 providing airflow into the feed pipe 51; the front end of the feed pipe 51 is provided with a drill bit 511 for piercing the protective layer 2; the side wall of the feed pipe 51 is provided with a side port 512 that can communicate with the ventilation cavity 32.

[0034] A semicircular bayonet 411 is disposed on one side of the housing 41 ; the feed pipe 51 is directly opposite to the bayonet 411 .

[0035] A positioning sleeve 416 coaxial with the feed pipe 51 is disposed in the housing 41 ; a thread groove 417 is disposed on the inner wall of the positioning sleeve 416 ; and an external thread 513 matching with the thread groove 417 is disposed on the outer wall of the feed pipe 51 .

[0036] The protective layer 2 includes an insulating layer 21 , a shielding layer 22 , and a heat insulating layer 23 ; three positioning rings 31 are circumferentially arranged on the support frame 3 ; and one positioning ring 31 accommodates one cable 1 .

[0037] A feed gear 53 is rotatably connected inside the outer shell 41 and is coaxially arranged with the feed tube 51 to drive the feed tube 51 to rotate circumferentially; a motor 71 is fixedly connected inside the outer shell 41 to drive the feed gear 53 to rotate; a photovoltaic panel 413 is arranged on the side wall of the outer shell 41; and a lithium battery 414 is installed inside the outer shell 41.

[0038] One end of the feed tube 51 is provided with a feed socket 514 with a non-circular cross section; one end of the feed gear 53 is provided with a feed plug 531 plugged into the feed socket 514, so that the feed gear 53 and the feed tube 51 rotate synchronously in the circumferential direction and slide relative to each other in the axial direction.

[0039] The photovoltaic panel 413 generates electricity, and the electric energy is stored in the lithium battery 414 ; the lithium battery 414 is used to supply power to the motor 71 .

[0040] A switching gear 54 capable of meshing with the feed gear 53 is rotatably connected inside the housing 41; a stop plate 541 is provided on the switching gear 54, which can abut against the feed tube 51 and thus cause the switching gear 54 to move axially; when the switching gear 54 is located at the rear side, the switching gear 54 meshes with the feed gear 53; when the feed tube 51 is inserted into the ventilation cavity 32, the feed tube 51 pushes the switching gear 54 to move to the front side, and the switching gear 54 is separated from the feed gear 53.

[0041] A return spring 55 is provided between the stop plate 541 and the housing 41 to drive the switching gear 54 to move backward.

[0042] The switching gear 54 is coaxially provided with a switching socket 542 with a non-circular cross-section; a driving column 56 that is rotatably connected to the switching socket 542 is provided in the housing 41; a driving gear 561 is coaxially provided at one end of the driving column 56; the driving gear 561 is connected to the motor 71 through a connecting gear 72.

[0043] A vent seat 52 is slidably connected inside the outer shell 41 and is sleeved on the outer circumference of the feed pipe 51 and communicated with the inside of the feed pipe 51 ; the vent seat 52 rotates relative to the feed pipe 51 in the circumferential direction and moves synchronously in the axial direction; the vent seat 52 cooperates with the fan 62 .

[0044] The feed gear 53 axially slides in the housing 41 ; when the feed gear 53 and the switching gear 54 are both located at the front side, the feed gear 53 and the switching gear 54 are meshed.

[0045] The outer wall of the shell 41 is provided with a clamping column 415; the outer wall of the shell 41 is rotatably connected with a fixing plate 42; the fixing plate 42 is provided with a fixing groove 421 at an eccentric position which can be clamped with the clamping column 415 on another shell 41; the side wall of the feed gear 53 is provided with a synchronization slot 532; the shell 41 is slidably connected with a synchronization frame 8 which is plugged into the synchronization slot 532, so that the synchronization frame 8 and the feed gear 53 move axially synchronously and rotate circumferentially relatively; the synchronization frame 8 is provided with a synchronization block 81; the fixing plate 42 is provided with a push plate 422 which can resist the synchronization block 81 and thereby push the synchronization frame 8 to move.

[0046] A synchronization spring for resetting is arranged between the synchronization frame 8 and the housing 41; when the fixed plate 42 is not engaged with the clamping column 415, the push plate 422 abuts against the synchronization block 81, so that the synchronization frame 8 drives the feed gear 53 to move to the front side; when the fixed plate 42 is engaged with the clamping column 415, the push plate 422 is separated from the synchronization block 81, and the synchronization spring enables the synchronization frame 8 to drive the feed gear 53 to be located at the rear side.

[0047] The housing 41 is fixedly connected with a shell 61 ; the fan 62 is rotatably connected in the shell 61 ; an air inlet 412 is provided on a side wall of the housing 41 opposite to the shell 61 ; and the motor 71 is drivingly connected with the fan 62 .

[0048] A fan gear 621 is coaxially disposed at one end of the fan 62 ; a transmission gear 63 is rotatably connected to the housing 61 ; one side of the transmission gear 63 is meshed with the fan gear 621 , and the other side is transmission-connected to the motor 71 .

[0049] An air outlet 611 is disposed on one end of the housing 61 away from the air inlet 412 ; the air outlet 611 is connected to the vent seat 52 via a hose.

[0050] The switching gear 54 is twice as thick as the feed gear 53 .

[0051] A controller is installed in the housing 41 ; the controller includes a wireless module; the wireless module is connected to the control terminal via a wireless signal, thereby facilitating control of all the clamps 4 via the control terminal.

[0052] In the initial state of the clamp 4 , the feed pipe 51 is located away from the bayonet 411 ; the switching gear 54 is located at the rear side.

[0053] During the installation of the cable 1 , the cable 1 is constructed, and then a clamp 4 is installed at a certain interval.

[0054] When installing the clamp 4, first align the bayonet 411 with the protective layer 2, and close the two clamping halves 40, so that the two clamping halves 40 clamp the protective layer 2; then rotate the fixing plate 42, so that the fixing groove 421 is engaged with the clamping column 415 on the other shell 41, and then the two clamping halves 40 are fixed on the protective layer 2. At the same time, the push plate 422 is separated from the synchronous block 81, and the feed gear 53 is located at the rear side and meshes with the switching gear 54.

[0055] After each clamp 4 is installed on the protective layer 2 , the control terminal interacts with the controller in each clamp 4 through wireless signals to control the operation of each clamp 4 .

[0056] The controller controls the motor 71 to work slowly in the forward direction for a certain period of time. During this process, the motor 71 drives the driving gear 561 to rotate, and then the driving column 56 drives the switching gear 54 to rotate synchronously in the forward direction. The switching gear 54 drives the feed gear 53 to rotate, and then the feed gear 53 drives the feed tube 51 to rotate in the circumferential direction.

[0057] As the feed pipe 51 rotates circumferentially, the feed pipe 51 moves toward the ventilation cavity 32 through the cooperation between the external thread 513 and the thread groove 417. At the same time, the drill bit 511 on the feed pipe 51 rotates and pierces the protective layer 2, and gradually moves toward the ventilation cavity 32, so that the feed pipe 51 is inserted into the ventilation cavity 32.

[0058] When the feed pipe 51 moves toward the ventilation cavity 32 until the ventilation seat 52 abuts against the abutment plate 541, the feed pipe 51 drives the switching gear 54 to move forward through the abutment plate 541. When the switching gear 54 moves to the front, the switching gear 54 separates from the feed gear 53, and the feed gear 53 stops rotating, and the feed pipe 51 stops moving. At this time, the side port 512 on the feed pipe 51 is connected to the ventilation cavity 32.

[0059] Afterwards, when the heat generated by the cable 1 is too high, it is necessary to dissipate the heat to the ventilation cavity 32. The control terminal sends a signal to the controller, and the motor 71 rotates rapidly. At this time, the motor 71 will not drive the feed gear 53 to rotate, so the motor 71 will drive the fan 62 to rotate continuously. For two adjacent clamps 4, the fan 62 in one clamp 4 rotates forward, and the external gas is blown into the ventilation cavity 32 through the air inlet 412, the air outlet 611, the ventilation seat 52, and the side port 512 in sequence. The fan 62 in the other clamp 4 rotates in the opposite direction, and the hot air in the ventilation cavity 32 is discharged to the outside through the side port 512, the ventilation seat 52, the air outlet 611, and the air inlet 412 in sequence. Then, the two adjacent clamps 4 form a complete gas flow path, which accelerates the cooling in the ventilation cavity 32, and then cools the cable 1.

[0060] When the cable 1 needs to be replaced after a certain number of years of use, the clamp 4 can be removed and reused. When removing the clamp 4, first manually rotate the fixing plate 42 to separate the fixing groove 421 from the clamping column 415, and at the same time, the push plate 422 abuts against the synchronization block 81, so that the synchronization frame 8 drives the feed gear 53 to move to the front side. At this time, the feed gear 53 and the switching gear 54 are both located at the front side and mesh with each other.

[0061] Then the motor 71 works in the reverse direction for a certain period of time, the motor 71 drives the switching gear 54 to rotate in the reverse direction, and then the feed gear 53 drives the feed tube 51 to rotate in the reverse direction, the feed tube 51 gradually moves away from the ventilation cavity 32, and the drill bit 511 leaves the ventilation cavity 32.

[0062] As the feed tube 51 moves, the vent seat 52 separates from the abutment plate 541, and the switch gear 54 moves to the rear side under the action of the return spring 55. However, since the thickness of the switch gear 54 is twice that of the feed gear 53, the switch gear 54 is still meshed with the feed gear 53. The motor 71 continues to drive the feed tube 51 away from the vent cavity 32. Finally, the feed tube 51 completely leaves the protective layer 2.

[0063] Then, the two clamping halves 40 are rotated to separate the bayonet 411 from the protective layer 2 , thereby completing the removal of the clamp 4 , and the clamp 4 is restored to its initial state.

Claims

1. A self-cooling cable, characterized in that: The invention comprises three groups of cables (1), a protective layer (2) wrapped around the outer periphery of the cables (1), and a support frame (3) located between the cables (1) and the protective layer (2); the support frame (3) has a ventilation cavity (32) therein; a clamp (4) is evenly mounted on the outer wall of the protective layer (2); the clamp (4) is composed of two relatively rotatable clamping halves (40); the clamping halves (40) comprise an outer shell (41), a feed pipe (51) mounted in the outer shell (41), and a fan (62) for providing airflow into the feed pipe (51); a drill bit (511) for piercing the protective layer (2) is arranged at the front end of the feed pipe (51); and a side opening (512) capable of communicating with the ventilation cavity (32) is arranged on the side wall of the feed pipe (51); A positioning sleeve (416) coaxial with the feed pipe (51) is arranged in the housing (41); a thread groove (417) is arranged on the inner wall of the positioning sleeve (416); and an external thread (513) matching with the thread groove (417) is arranged on the outer wall of the feed pipe (51); A feed gear (53) coaxially arranged with the feed pipe (51) and driving the feed pipe (51) to rotate in a circumferential direction is rotatably connected in the housing (41); a motor (71) driving the feed gear (53) to rotate is fixedly connected in the housing (41); a photovoltaic panel (413) is arranged on a side wall of the housing (41); and a lithium battery (414) is installed inside the housing (41); A switching gear (54) capable of meshing with the feed gear (53) is rotatably connected inside the housing (41); a stop plate (541) is provided on the switching gear (54) capable of abutting against the feed pipe (51) so as to cause the switching gear (54) to move axially; when the switching gear (54) is located at the rear side, the switching gear (54) meshes with the feed gear (53); when the feed pipe (51) is inserted into the ventilation cavity (32), the feed pipe (51) pushes the switching gear (54) to move to the front side, and the switching gear (54) is separated from the feed gear (53), at which time the feed gear (53) no longer rotates, and the feed pipe (51) stops moving; A vent seat (52) is slidably connected inside the housing (41) and is sleeved on the outer circumference of the feed pipe (51) and communicated with the inside of the feed pipe (51); the vent seat (52) and the feed pipe (51) rotate relative to each other in the circumferential direction and move synchronously in the axial direction; the vent seat (52) cooperates with the fan (62).

2. A self-cooling cable according to claim 1, characterized in that: A semicircular bayonet (411) is provided on one side of the housing (41); the feed pipe (51) is directly opposite to the bayonet (411).

3. A self-cooling cable according to claim 1, characterized in that: The protective layer (2) comprises an insulating layer (21), a shielding layer (22), and a heat insulation layer (23); three positioning rings (31) are arranged on the support frame (3) along the circumference; and one positioning ring (31) accommodates one cable (1).

4. A self-cooling cable according to claim 1, characterized in that: The feed gear (53) slides axially in the housing (41); when the feed gear (53) and the switching gear (54) are both located at the front side, the feed gear (53) and the switching gear (54) are meshed.

5. A self-cooling cable according to claim 4, characterized in that: The outer wall of the housing (41) is provided with a clamping column (415); the outer wall of the housing (41) is rotatably connected to a fixing plate (42); the fixing plate (42) is provided with a fixing groove (421) at an eccentric position capable of clamping with a clamping column (415) on another housing (41); the side wall of the feed gear (53) is provided with a synchronization slot (532); a synchronization frame (8) plugged into the synchronization slot (532) is slidably connected in the housing (41); a synchronization block (81) is provided on the synchronization frame (8); and a push plate (422) capable of abutting against the synchronization block (81) to push the synchronization frame (8) to move is provided on the fixing plate (42).

6. A self-cooling cable according to claim 1, characterized in that: A housing (61) is fixedly connected inside the outer shell (41); the fan (62) is rotatably connected inside the housing (61); an air inlet (412) is provided on a side wall of the outer shell (41) directly opposite to the housing (61); and the motor (71) is drivingly connected to the fan (62).

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