A 10 kV overhead line branch pre-setting device

Abstract

The present invention discloses a 10kV overhead line branch preset device, including an insulation box and an insulation box driving device, the insulation box is composed of an upper box body and a lower box body, the upper box body and the lower box body are slidably connected through a connecting device, a power cable inlet terminal is arranged on the upper box body, a static contact is arranged in the upper box body, the static contact is connected to the power cable inlet terminal through a static contact connecting conductive member; a power cable outlet terminal is arranged on the lower box body, a moving contact matching with the static contact is arranged in the lower box body, the moving contact is connected to the power cable outlet terminal through a moving contact connecting conductive member; the insulation box driving device drives the lower box body to move relative to the upper box body through the connecting device. The present invention can meet the requirements of non-stop operation of modern power distribution networks, can avoid large-scale power outages and long-term power outages caused by single operations, and can ensure the personal safety of workers, and the connection and power transmission are safe and reliable, and the operation is simple and convenient.

Description

Technical Field

[0001] The invention relates to the field of power transmission, and in particular to a 10kV overhead line branch preset device. Background Art

[0002] In recent years, the scale of power grid construction and investment have been increasing. Due to the geographical location of the channel or in order to avoid the problem of large area of ​​the channel, most 10kV overhead lines adopt double circuits or multiple circuits. With the development of the industrial and agricultural economy and the improvement of people's living standards, the construction tasks of branch line power supply on the erected trunk line have gradually increased. When it is necessary to shut down and connect the power, the double-circuit or multi-circuit lines must be completely shut down. The power supply company not only needs to make a power outage plan in advance and announce it, but also needs to notify the main electricity users 7 days in advance, and make preparations for power outage operations and arrange relevant safety measures. Once a power outage occurs, it will cause a large-scale power outage, which is easy to cause user complaints.

[0003] Although the power supply department has now carried out live operations, no matter which operation method is adopted, it involves considering various safety distance issues. Since double-circuit or multi-circuit lines are limited by the operation site, some operation parts cannot meet the safety distance requirements and live operations cannot be carried out, affecting the progress of the project and users' electricity consumption. Summary of the invention

[0004] The purpose of the present invention is to provide a 10kV overhead line branch preset device that can adapt to the requirements of non-stop operation in modern distribution networks, avoid large-scale power outages and long-term power outages caused by single operations, ensure the personal safety of workers, and ensure safe and reliable power supply and simple and convenient operation.

[0005] The present invention adopts the following technical solutions:

[0006] A 10kV overhead line branch preset device comprises an insulating box and an insulating box driving device, wherein the insulating box consists of an upper box body and a lower box body, the upper box body and the lower box body are slidably connected via a connecting device, a power cable inlet terminal is arranged on the upper box body, a static contact is arranged in the upper box body, and the static contact is connected to the power cable inlet terminal via a static contact connecting conductive member; a power cable outlet terminal is arranged on the lower box body, a moving contact matching with the static contact is arranged in the lower box body, and the moving contact is connected to the power cable outlet terminal via a moving contact connecting conductive member; the insulating box driving device drives the lower box body to move relative to the upper box body via the connecting device.

[0007] The connecting device comprises an upper slide and a lower slide which match each other. The upper part of the upper slide is connected to the upper box body, and the lower part of the lower slide is connected to the lower box body.

[0008] The upper box body and the lower box body are both provided with an insulating layer formed by an insulating device.

[0009] The stationary contact, the stationary contact connected conductive component, the power cable inlet, the moving contact, the moving contact connected conductive component and the power cable outlet are all fixed by an insulating device.

[0010] The insulating device is made of insulating rubber.

[0011] The insulating box driving device adopts a lower box body operating ring.

[0012] The insulating box driving device includes a controller, a driving motor, a transmission mechanism and a chain conveyor system. The output end of the driving motor drives the chain conveyor system through the transmission mechanism. The chain conveyor system is connected to the lower box body through a connecting block. The controller controls the connection of the driving motor.

[0013] The transmission mechanism includes a worm, a worm wheel, a worm wheel shaft and a follower gear. The worm is coaxially connected to the output shaft of the driving motor through a coupling, the worm wheel is meshed with the worm, and the lead angle of the worm is smaller than the equivalent friction angle between the worm wheel teeth. The follower gear is coaxially arranged with the worm wheel through the worm wheel shaft; the chain transmission system includes a driven gear, a driven gear shaft and a chain. The driven gear shaft is horizontally arranged on the side surface of the upper box body, the driven gear is rotatably connected to the driven gear shaft, the chain is sleeved on the follower gear and the driven gear and meshed with the follower gear and the driven gear, and the chain is connected to the lower box body through a connecting block.

[0014] The chain is locked and the chain is unlocked when the chain is unlocked, and the upper and lower case locking sleeves are connected to each other to form a locking mechanism, wherein the locking mechanism is locked and the chain is unlocked. On the lower part of the surface of the side, the push rod is vertically inclined and the lower end of the push rod is rotatably connected to the hinged connecting block through a rotating shaft. A torsion spring is sleeved on the rotating shaft, and the locating pin is horizontally arranged and connected to the upper end of the push rod. A rotating locating pin driving block is also provided on the chain. When the upper box body and the lower box body are separated, the static contact and the moving contact are separated, the torsion spring is in a natural state, and the locating pin is located on the outside of the upper box body locking sleeve; when the lower box body moves to the upper limit position, the static contact and the moving contact are connected, and the rotating locating pin driving block pushes the push rod to move to one side of the upper box body and compresses the torsion spring, and the lower box body locking sleeve is located inside the upper box body locking sleeve and the locating pin is inserted into the pin holes of the upper box body locking sleeve and the lower box body locking sleeve.

[0015] The connection part between the positioning pin and the push rod extends toward one side of the chain to form a baffle protrusion.

[0016] The present invention is suitable for 10kV overhead lines, and is particularly suitable for being pre-installed on pole towers of double-circuit or multi-circuit overhead lines. It can be pre-installed in multiple locations in a single circuit at one time, and can avoid large-scale power outages and long-term power outages caused by a single operation, and solve the problem of frequent power outages in overhead insulated 10kV double (multi) circuit lines, thereby increasing power supply operating income, improving power supply reliability, and ensuring safe and reliable power connection and transmission. The operation is simple and convenient, and there will be huge demand for it in the development of distribution network projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the insulating box driving device in the present invention;

[0019] Figure 3 It is a structural schematic diagram of a rotating positioning pin. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and embodiments:

[0021] like Figures 1 to 3 As shown, the 10kV overhead line branch preset device of the present invention comprises an insulation box 1 and an insulation box driving device. The insulation box 1 is pre-installed on the pole tower of the double-circuit or multi-circuit overhead line, and can be preset and installed at multiple locations in a single circuit at one time. The insulation box 1 is composed of an upper box body 1-1 and a lower box body 1-2, and the upper box body 1-1 and the lower box body 1-2 are slidably connected by a connecting device 2. The upper box body 1-1 is provided with a power cable inlet terminal 3 for connecting the incoming power cable, and a static contact 4 is provided in the upper box body 1-1. The static contact 4 is connected to the power cable inlet terminal 3 through a static contact connecting conductive member 5; the lower box body 1-2 is provided with a power cable outlet terminal 6 for connecting the outgoing power cable, and a moving contact 7 matching the static contact 4 is provided in the lower box body 1-2. The moving contact 7 is connected to the power cable outlet terminal 6 through a moving contact connecting conductive member 8; the insulation box driving device drives the lower box body 1-2 to move relative to the upper box body 1-1 through the connecting device 2.

[0022] The connecting device 2 can adopt a matching upper slide 2-1 and a lower slide 2-2. The upper part of the upper slide 2-1 is connected to the upper box 1-1, and the lower part of the lower slide 2-2 is connected to the lower box 1-2. The upper box 1-1 and the lower box 1-2 are both provided with an insulating layer composed of an insulating device. The static contact 4, the static contact connecting conductive member 5, the power cable inlet terminal 3, the moving contact 7, the moving contact connecting conductive member 8 and the power cable outlet terminal 6 are all fixed by the insulating device. In this embodiment, the insulating device adopts an insulating rubber with a withstand voltage rating of 12.5kV. The setting of the above-mentioned insulating device can ensure sufficient insulation distance to effectively improve the safety of the present invention and prevent safety accidents.

[0023] In the present invention, the insulating box driving device can adopt a lower box operating ring arranged on the lower surface of the lower box 1-2, so as to manually drive the lower box 1-2 to move downward or upward, so as to separate or connect the static contact 4 with the moving contact 7. The lower box operating ring can adopt an existing two-way driving operating ring, such as a hand-cranked lifting operating ring.

[0024] The insulating box driving device may also be an electrically controlled driving device, including a controller, a driving motor 9, a transmission mechanism and a chain transmission system, wherein the output end of the driving motor 9 drives the chain transmission system through the transmission mechanism, the chain transmission system is connected to the lower box 1-2 through a connecting block 10, and the controller controls the connection to the driving motor 9. The controller may receive an action signal by wire or wireless means to realize remote operation, further improving the safety performance of the present invention.

[0025] In this embodiment, the transmission mechanism includes a worm 11, a worm wheel 12, a worm wheel shaft 13 and a follower gear 14. The worm 11 is coaxially connected with the output shaft of the driving motor 9 through a coupling 15. The worm wheel 12 meshes with the worm 11, and the lead angle of the worm 11 is less than the equivalent friction angle between the teeth of the worm wheel 12, so as to realize the self-locking function and prevent the lower box 1-2 from sliding down under the action of gravity. The follower gear 14 is coaxially arranged with the worm wheel 12 through the worm wheel shaft 13; the chain transmission system includes a driven gear 16, a driven gear shaft 17 and a chain 18, the driven gear shaft 17 is horizontally arranged on the side surface of the upper box 1-1, the driven gear 16 is rotatably connected with the driven gear shaft 17, the chain 18 is sleeved on the follower gear 14 and the driven gear 16 and meshes with the follower gear 14 and the driven gear 16, and the chain 18 is connected to the lower box 1-2 through the connecting block 10. When the controller controls the driving motor 9 to rotate forward or reverse, the driving motor 9 can drive the lower box 1 - 2 to rise or fall through the chain 18 to achieve the connection or separation of the static contact 4 and the moving contact 7 .

[0026] The present invention also provides a box locking device, which includes an upper box locking sleeve 19, a lower box locking sleeve 20, a rotatable positioning pin 21 and a rotatable positioning pin driving block 22. The upper box locking sleeve 19 is arranged on the side surface of the upper box 1-1 on the same side as the chain 18, and the lower box locking sleeve 20 is arranged on the side surface of the lower box 1-2 on the same side as the chain 18. The shapes of the upper box locking sleeve 19 and the lower box locking sleeve 20 match each other. When the lower box 1-2 moves to the upper limit position, the lower box locking sleeve 20 is located inside the upper box locking sleeve 19. The upper box locking sleeve 19 and the lower box locking sleeve 20 are both provided with corresponding pin holes on the surface close to the chain 18. The rotatable positioning pin 21 includes a hinged connection block 23, a push rod 24, a positioning pin 25 and a torsion spring. The hinged connection block 23 is arranged on the upper box locking sleeve 19 close to the chain 18 At the lower part of the surface of one side, the push rod 24 is vertically inclined and the lower end of the push rod 24 is rotatably connected to the hinged connection block 23 through the rotating shaft 26. The rotating shaft 26 is sleeved with a torsion spring. The positioning pin 25 is horizontally arranged and connected to the upper end of the push rod 24. The rotating positioning pin driving block 22 is arranged at the matching position of the chain 18. When the upper box 1-1 and the lower box 1-2 are separated, the static contact 4 and the moving contact 7 are separated, the torsion spring is in a natural state, and the positioning pin 25 is located outside the upper box locking sleeve 19; when the lower box 1-2 moves to the upper limit position, the static contact 4 and the moving contact 7 are connected, the rotating positioning pin driving block 22 pushes the push rod 24 to move to the side of the upper box 1-1 and compresses the torsion spring, the lower box locking sleeve 20 is located inside the upper box locking sleeve 19, and the positioning pin 25 is inserted into the pin holes of the upper box locking sleeve 19 and the lower box locking sleeve 20. An effective locking state is formed to prevent the lower box 1-2 from sliding down under the action of gravity.

[0027] In this embodiment, the connection portion between the positioning pin 25 and the push rod 24 extends toward the chain 18 to form a baffle protrusion 27, which forms a blocking effect on the rotating positioning pin drive block 22 and improves the driving effect of the rotating positioning pin drive block 22 on the rotating positioning pin 21.

[0028] In the present invention, the working state is the closing state, that is, the static contact 4 and the moving contact 7 are in the connection state, and the power cable inlet terminal 3 and the power cable outlet terminal 6 are both energized. When the power cable outlet terminal 6 needs to be operated to connect a new device, the "lower box operating ring" can be manually operated, or the driving motor 9 can be controlled by the controller to make the lower box 1-2 move downward and separate from the upper box 1-1, thereby realizing the separation of the moving contact 7 and the static contact 4, and finally achieving the power cutoff of the moving contact 7 and its attached equipment from the power cable outlet terminal 6, ensuring that the power cable outlet terminal 6 is not energized when connecting a new device, ensuring the personal safety of the staff, and the safe and reliable connection and power transmission, and the operation is simple and convenient. When it is necessary to restore the closing state, the "lower box operating ring" can be manually operated, or the driving motor 9 can be controlled by the controller to make the lower box 1-2 move upward, thereby realizing the connection of the moving contact 7 and the static contact 4.

Claims

1. A 10kV overhead line branch preset device, characterized in that: It includes an insulation box and an insulation box driving device. The insulation box consists of an upper box body and a lower box body. The upper box body and the lower box body are slidably connected through a connecting device. The upper box body is provided with a power cable inlet terminal. A static contact is provided in the upper box body. The static contact is connected to the power cable inlet terminal through a static contact connecting conductive member. The lower box body is provided with a power cable outlet terminal. A moving contact matching the static contact is provided in the lower box body. The moving contact is connected to the power cable outlet terminal through a moving contact connecting conductive member. The insulation box driving device drives the lower box body to move relative to the upper box body through the connecting device. The connecting device comprises an upper slide and a lower slide that match each other. The upper part of the upper slide is connected to the upper box body, and the lower part of the lower slide is connected to the lower box body. The insulating box driving device includes a controller, a driving motor, a transmission mechanism and a chain transmission system. The output end of the driving motor drives the chain transmission system through the transmission mechanism. The chain transmission system is connected to the lower box body through a connecting block. The controller controls the connection of the driving motor. The transmission mechanism includes a worm, a worm wheel, a worm wheel shaft and a follower gear. The worm is coaxially connected to the output shaft of the driving motor through a coupling. The worm wheel meshes with the worm, and the lead angle of the worm is smaller than the equivalent friction angle between the teeth of the worm wheel. The follower gear is coaxially arranged with the worm wheel through the worm wheel shaft. The chain transmission system includes a driven gear, a driven gear shaft and a chain. The driven gear shaft is horizontally arranged on the side surface of the upper box body. The driven gear is rotatably connected with the driven gear shaft. The chain is sleeved on the follower gear and the driven gear and meshes with the follower gear and the driven gear. The chain is connected to the lower box body through a connecting block. The chain is locked and the chain is unlocked when the chain is unlocked, and the upper and lower case locking sleeves are connected to each other to form a locking mechanism, wherein the locking mechanism is locked and the chain is unlocked. On the lower part of the surface of the side, the push rod is vertically inclined and the lower end of the push rod is rotatably connected to the hinged connecting block through a rotating shaft. A torsion spring is sleeved on the rotating shaft, and the locating pin is horizontally arranged and connected to the upper end of the push rod. A rotating locating pin driving block is also provided on the chain. When the upper box body and the lower box body are separated, the static contact and the moving contact are separated, the torsion spring is in a natural state, and the locating pin is located on the outside of the upper box body locking sleeve; when the lower box body moves to the upper limit position, the static contact and the moving contact are connected, and the rotating locating pin driving block pushes the push rod to move to one side of the upper box body and compresses the torsion spring, and the lower box body locking sleeve is located inside the upper box body locking sleeve and the locating pin is inserted into the pin holes of the upper box body locking sleeve and the lower box body locking sleeve.

2. The 10kV overhead line branch preset device according to claim 1, characterized in that: The upper box body and the lower box body are both provided with an insulating layer formed by an insulating device.

3. The 10kV overhead line branch preset device according to claim 1 is characterized in that: The stationary contact, the stationary contact connected conductive component, the power cable inlet, the moving contact, the moving contact connected conductive component and the power cable outlet are all fixed by an insulating device.

4. The 10kV overhead line branch preset device according to claim 2 or 3, characterized in that: The insulating device is made of insulating rubber.

5. The 10kV overhead line branch preset device according to claim 1, characterized in that: The insulating box driving device adopts a lower box body operating ring.

6. The 10kV overhead line branch preset device according to claim 1, characterized in that: The connection part between the positioning pin and the push rod extends toward one side of the chain to form a baffle protrusion.

Images