A 40.5kV looped network high current circuit breaker

Abstract

The application relates to the field of circuit breakers, in particular to a 40.5kV looped network large-current circuit breaker which comprises a body and a mounting assembly, the mounting assembly comprises a pressing strip, a sliding rod, an elastic piece one and a plurality of fixing bolts, a plurality of fixing holes are arranged on the surface of the body at intervals, a sliding channel is arranged on the surface of the body, the end, away from the sliding channel, of the sliding rod is connected to the surface of the pressing strip, one end, in the elastic force direction, of the elastic piece one is connected to the inner wall of the sliding channel, and the other end, in the elastic force direction, of the elastic piece one is connected to the rod surface of the sliding rod. In the application, the pressing strip, the sliding rod, the elastic piece one and the fixing bolts are arranged, the fixing bolts are not easily affected by the vibration of the power grid to produce a small relative motion, the limiting stability of the fixing bolts in the fixing holes is guaranteed, the fastening force between the looped network large-current circuit breaker and the wall surface is improved, and therefore the safety in use of the looped network large-current circuit breaker is improved.

Description

Technical Field

[0001] This application relates to the field of circuit breakers, and more particularly to a 40.5kV ring network high current circuit breaker. Background Technology

[0002] Ring network high-current circuit breakers are mainly used in ring network power supply systems. They have the ability to interrupt large currents and can quickly disconnect the circuit when overload or short circuit faults occur, so as to protect the safe operation of the circuit and equipment. They play an important role in maintaining the stability and reliability of the power system.

[0003] The base of a high-current ring network circuit breaker is fixed to the installation position by bolts, thus securing the circuit breaker in its installation location. When the high-current ring network circuit breaker is in operation, the vibration of the power grid causes the bolts to move slightly relative to each other, which counteracts the friction between the bolts and the connected parts, causing the bolts to loosen. This reduces the fastening force between the high-current ring network circuit breaker and the installation position, thereby reducing the safety of the circuit breaker in use. Summary of the Invention

[0004] To improve the problem of the fastening force between the high-current circuit breaker of the ring network and the installation position, this application provides a 40.5kV high-current circuit breaker of the ring network.

[0005] This application provides a 40.5kV ring network high-current circuit breaker, which adopts the following technical solution:

[0006] A 40.5kV ring network high-current circuit breaker includes a body and an mounting assembly. The mounting assembly includes a clamping strip, a sliding rod, an elastic element, and multiple fixing bolts. The surface of the body has multiple fixing holes spaced apart for the ends of the fixing bolts to pass through. The ends of the fixing bolts pass through the fixing holes and are threaded and tightened to a wall to form a limiting position. The surface of the body has a sliding track for the sliding rod to slide. The sliding direction of the sliding rod is perpendicular to the axis of the fixing holes. The end of the sliding rod away from the sliding track is connected to the surface of the clamping strip. The length direction of the clamping strip is parallel to the arrangement direction of the fixing holes. One end of the elastic element is connected to the inner wall of the sliding track in the elastic direction, and the other end is connected to the surface of the sliding rod in the elastic direction. The elastic element has an elastic force that drives the sliding rod to slide towards the fixing holes, and the surface of the clamping strip and the surface of the body tend to clamp the ends of the fixing bolt nuts to form a limiting position.

[0007] By adopting the above technical solution, the elastic element drives the slide rod to slide towards the fixing hole, and the end face of the clamping strip faces multiple fixing holes. When the ring network high current circuit breaker is installed, the body surface abuts against the wall to form a positioning, driving the slide rod to overcome the elastic element and slide away from the fixing hole along the inner wall of the slide track. The clamping strip moves away from the fixing hole, and the end of the fixing bolt passes through the fixing hole and is threaded and tightened to the wall to form a limit, thus fixing the body on the wall. When the slide rod is released, the support for the slide rod disappears, and the elastic element drives the slide rod to slide towards the fixing hole along the inner wall of the slide track. The surface of the clamping strip and the surface of the body clamp the two ends of the fixing bolt nut to form a limit, thus limiting the end of the fixing bolt. The fixing bolt is not easily affected by the vibration of the power grid and will not produce slight relative movement, ensuring the limiting stability of the fixing bolt in the fixing hole, improving the fastening force between the ring network high current circuit breaker and the wall, thereby improving the safety of the ring network high current circuit breaker.

[0008] Optionally, the mounting assembly further includes a control strip. The inner wall of the slide rail has a control channel for the control strip to slide. The sliding direction of the control strip is parallel to the arrangement direction of the fixing holes. The control strip is located on the side of the slide rod near the elastic element. When the slide rod slides away from the fixing hole and the control strip slides closer to the slide rail, the end face of the control strip protruding from the slide rail abuts against the slide rod surface and limits the slide rod to approach the fixing hole.

[0009] By adopting the above technical solution, before tightening the fixing bolts, the user drives the slide rod to slide away from the fixing hole along the inner wall of the slide rail. The control channel is located on the side of the slide rod away from the elastic element. The user drives the control strip to slide closer to the slide rail along the inner wall of the control channel. The end of the control strip protrudes from the inner wall of the slide rail and abuts against the slide rod surface to form a limit. The elastic force of the elastic element restricts the slide rod from moving closer to the fixing hole along the inner wall of the slide rail. When multiple fixing bolts are threaded through the fixing holes and fixed to the wall, the user presses the end face of the control strip and drives the control strip away from the slide rail. The end face of the control strip is flush with the inner wall of the slide rail, and the limiting effect of the control strip on the slide rod disappears. The elastic force of the elastic element drives the slide rod to move closer to the fixing hole. The body surface and the end face of the abutting strip abut against the two ends of the fixing bolt nut to form a limit. This achieves directional control of the slide rod's movement, eliminating the need for the user to continuously apply force to the slide rod away from the fixing hole, thereby improving the installation efficiency of the ring network high current circuit breaker.

[0010] Optionally, the mounting assembly further includes a force-applying block and an elastic element two. The surface of the main body has a force-applying cavity for the force-applying block to slide. The sliding direction of the force-applying block and the sliding direction of the control strip are parallel to each other. The force-applying cavity is connected to the control flow channel. One end of the force-applying block is connected to the surface of the control strip, and the other end of the force-applying block protrudes from the surface of the main body. One end of the elastic element two in the elastic direction is connected to the inner wall of the control flow channel, and the other end of the elastic element two in the elastic direction is connected to the surface of the control strip. The elastic element two has the elasticity to drive the control strip to slide towards the slide channel, and the end of the control strip protrudes from the inner wall of the slide channel.

[0011] By adopting the above technical solution, the end of the force-applying block protruding from the body is held by the user and driven to slide along the inner wall of the force-applying cavity, causing the control bar to slide along the inner wall of the control flow channel. When it is necessary to limit the slide rod, the force-applying block is driven to slide along the inner wall of the force-applying cavity away from the fixing hole, causing the control bar to slide along the control flow channel away from the slide rail. The end face of the control bar is flush with the inner wall of the slide rail, driving the slide rod to slide along the inner wall of the slide rail away from the fixing hole. The control bar is located on the side of the slide rod away from the first elastic element. When the force-applying block is released, the elastic element two forces the control bar to slide along the inner wall of the control flow channel towards the slide rail. The end face of the control bar protruding from the slide rail abuts against the slide rod surface to form a limit. The force-applying block provides the user with a force-applying point, further improving the installation efficiency of the ring network high-current circuit breaker.

[0012] Optionally, the clamping strip includes a clamping part and an airbag part. The clamping part is connected to the slide bar surface, one side of the airbag part is connected to the surface of the clamping part facing the fixing hole, and the other side of the airbag part and the body surface can clamp against both ends of the fixing bolt nut to form a limit.

[0013] By adopting the above technical solution, the airbag part has a certain elasticity. When the slide bar approaches the fixing hole along the inner wall of the slide, the clamping part provides support for the airbag part. The surface of the airbag part and the surface of the body abut against the two sides of the fixing bolt nut to form a limit. The airbag part is deformed under pressure, which increases the contact area between the airbag part and the fixing bolt, reduces the wear on the fixing bolt, and thus improves the clamping force between the clamping strip and the fixing bolt.

[0014] Optionally, the pressing part is connected to an inflation assembly, which includes multiple inflation pistons. The surface of the pressing part away from the airbag part is provided with multiple inflation channels for the inflation pistons to slide. The sliding direction of the inflation pistons is parallel to the axis of the fixing hole, and the multiple inflation channels are connected to the inner cavity of the airbag part.

[0015] By adopting the above technical solution, when the clamping force between the surface of the airbag and the surface of the fixing bolt decreases, the inflation piston is driven to slide along the inner wall of the inflation channel toward the airbag. The air pressure in the inflation channel increases, and the air in the inflation channel enters the inner cavity of the airbag. The surface of the airbag is pressurized and expands, and clamps against the surface of the fixing bolt to form a limit, thereby ensuring the clamping force between the surface of the airbag and the surface of the fixing bolt.

[0016] Optionally, the inflation assembly further includes a thermal expansion and contraction block. The surface of the pressing part away from the airbag part is provided with a deformation cavity for the thermal expansion and contraction block to deform. The deformation cavity is connected to multiple inflation channels. When the thermal expansion and contraction block heats up and expands, the surface of the thermal expansion and contraction block abuts against the end of the inflation piston protruding from the inner wall of the deformation cavity and drives the inflation piston to slide towards the inflation channel.

[0017] By adopting the above technical solution, when the high-current circuit breaker of the ring network heats up during long-term operation, the main body transfers some of the heat energy to the thermal expansion and contraction block. The thermal expansion and contraction block heats up and expands. The surface of the thermal expansion and contraction strip abuts against the end of the inflation piston protruding from the inner wall of the deformation cavity and drives the inflation piston to slide towards the inflation channel. The air pressure in the inflation channel increases, and the air in the inflation channel enters the inner cavity of the air bladder. The surface of the air bladder expands under pressure and presses against the surface of the fixing bolt to form a limit, causing the fixing bolt to heat up and expand and loosen, thereby improving the installation firmness of the high-current circuit breaker of the ring network.

[0018] Optionally, the inflation assembly further includes a plurality of elastic elements three, each corresponding to an inflation piston. One end of the elastic element three in the elastic direction is connected to the inner wall of the inflation channel, and the other end of the elastic element three in the elastic direction is connected to the surface of the inflation piston. The elastic element three has the elastic force to drive the inflation piston to slide towards the deformation cavity, and the end of the inflation piston tends to protrude from the inner wall of the deformation cavity.

[0019] By adopting the above technical solution, when the thermal expansion and contraction block cools down and contracts, the pressure of the thermal expansion and contraction block on the inflation piston disappears, and the elastic element drives the inflation piston to slide along the inner wall of the inflation channel towards the deformation cavity. The end of the inflation piston protrudes from the inner wall of the deformation cavity, thereby realizing the automatic reset of the inflation piston.

[0020] Optionally, the end of the inflation piston protruding from the deformation cavity is provided with a guide surface. The guide surface is in the shape of a circular arc protrusion. The guide surface can abut against the surface of the thermal expansion and contraction block and guide the inflation piston to slide towards the inflation channel.

[0021] By adopting the above technical solution, when the thermal expansion and contraction block heats up and expands, the thermal expansion and contraction block approaches the inflation piston along the inner wall of the deformation cavity. The guide surface abuts against the surface of the thermal expansion and contraction block and guides the inflation piston to slide towards the inflation channel, reducing the wear between the thermal expansion and contraction block and the inflation piston, thereby extending the service life of the ring network high current circuit breaker.

[0022] Optionally, the clamping part is connected to a cooling component, which includes an elastic element four, a heat dissipation impeller, and a connecting rope. The heat dissipation impeller is rotatably connected to the surface of the clamping part facing the main body. One end of the connecting rope is connected to the rotating shaft of the heat dissipation impeller, and the other end of the connecting rope is connected to the surface of the thermal expansion and contraction block. One end of the elastic element four in the elastic direction is connected to the surface of the clamping part, and the other end of the elastic element four in the elastic direction is connected to the rotating shaft of the heat dissipation impeller. The elastic element four has elasticity to drive the heat dissipation impeller to rotate. The connecting rope is wrapped around the outer circumference of the rotating shaft of the heat dissipation impeller, and the connecting rope between the heat dissipation impeller and the thermal expansion and contraction block is in a taut state.

[0023] By adopting the above technical solution, the four elastic elements drive the heat dissipation impeller to rotate, and the connecting rope is wrapped around the outer circumference of the rotating shaft of the heat dissipation impeller. The connecting rope between the heat dissipation impeller and the thermal expansion and contraction block is in a taut state. When the thermal expansion and contraction block heats up and expands, the length of the connecting rope between the thermal expansion and contraction block and the heat dissipation impeller increases. The heat dissipation impeller rotates, driving air to impact the surface of the main body. The surface of the main body and the air make full contact and exchange heat, thereby cooling the high-current circuit breaker of the ring network. When the thermal expansion and contraction block cools down and contracts, the distance between the thermal expansion and contraction block and the heat dissipation impeller decreases. The four elastic elements drive the heat dissipation impeller to rotate, causing the connecting rope to wrap around the outer circumference of the rotating shaft of the heat dissipation impeller. The connecting rope between the heat dissipation impeller and the thermal expansion and contraction block is in a taut state, thereby enabling the retraction of the connecting rope.

[0024] Optionally, the main body is connected to a clamping assembly, which includes multiple clamping pistons and multiple elastic elements. Each fixing hole has an inner wall with a clamping cavity for the clamping piston to slide. The sliding direction of the clamping piston is parallel to the sliding direction of the slide rod. Each elastic element corresponds to a clamping piston. One end of the elastic element in the elastic direction is connected to the inner wall of the clamping cavity, and the other end is also connected to the inner wall of the clamping cavity. The elastic element has the elastic force to drive the clamping piston to slide closer to the fixing hole, and the end of the clamping piston tends to protrude from the inner wall of the fixing hole. When the end of the fixing bolt passes through the fixing hole and is threaded and fixed to the wall, the surface of the fixing bolt abuts against the surface of the clamping piston and drives the clamping piston to slide closer to the clamping cavity, and the end face of the clamping piston abuts against the surface of the fixing bolt to form a limit.

[0025] By adopting the above technical solution, the elastic element drives the pressing piston to slide towards the fixing hole, and the end of the pressing piston protrudes from the inner wall of the fixing hole. When the end of the fixing bolt passes through the fixing hole and is threaded and fixed to the wall, the surface of the fixing bolt abuts against the surface of the pressing piston and drives the pressing piston to approach the pressing cavity. The pressing piston has a certain elastic force, and the end face of the pressing piston facing the fixing hole abuts against the surface of the fixing bolt to form a limit, increasing the friction between the fixing bolt and the pressing piston, making it less likely for the fixing bolt to deflect in the fixing hole, thereby improving the stability of the installation of the ring network high current circuit breaker.

[0026] In summary, this application includes at least one of the following beneficial technical effects:

[0027] 1. The setting of the clamping bar, sliding rod, elastic element and fixing bolt makes the fixing bolt less susceptible to the influence of power grid vibration and generates slight relative movement. This ensures the limiting stability of the fixing bolt in the fixing hole, improves the fastening force between the ring network high current circuit breaker and the wall, and thus enhances the safety of the ring network high current circuit breaker.

[0028] 2. The control bar is designed so that the surface of the control bar and the end face of the clamping bar abut against the two ends of the fixing bolt and nut to form a limit, thereby realizing the directional control of the sliding rod's movement. This eliminates the need for the user to constantly apply force to the sliding rod to move it away from the fixing hole, thus improving the installation efficiency of the ring network high current circuit breaker.

[0029] 3. The setting of the force-applying block and the second elastic element: the elastic element drives the control bar to slide along the inner wall of the control flow channel towards the slide rail. The end face of the control bar protruding from the slide rail abuts against the slide rod surface to form a limit. The force-applying block provides the user with a force-applying point, further improving the installation efficiency of the ring network high current circuit breaker. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure in an embodiment of this application.

[0031] Figure 2 This is a partial structural diagram of an embodiment of this application, mainly showing the installation components.

[0032] Figure 3 This is a partial structural diagram of an embodiment of this application, mainly showing the force-applying block.

[0033] Figure 4 This is a partial cross-sectional view of an embodiment of this application, mainly showing the cooling component.

[0034] Figure 5 This is a partial cross-sectional view of an embodiment of this application, mainly showing the inflatable component.

[0035] Explanation of reference numerals in the attached drawings: 1. Body; 11. Fixing hole; 12. Slide rail; 13. Control flow channel; 14. Force application chamber; 15. Pressing chamber; 2. Mounting assembly; 21. Pressing bar; 211. Pressing part; 2111. Deformation chamber; 2112. Inflation channel; 212. Airbag part; 22. Slide rod; 23. Control bar; 24. Force application block; 25. Elastic element two; 26. Elastic element one; 27. Fixing bolt; 3. Pressing assembly; 31. Pressing piston; 311. Buffer surface; 32. Elastic element five; 4. Inflation assembly; 41. Thermal expansion and contraction block; 42. Elastic element three; 43. Inflation piston; 431. Guide surface; 5. Cooling assembly; 51. Heat dissipation impeller; 52. Elastic element four; 53. Connecting rope. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0037] This application discloses a 40.5kV ring network high-current circuit breaker. (Refer to...) Figure 1 and Figure 2 A 40.5kV ring network high-current circuit breaker includes a body 1 and an mounting assembly 2. In this embodiment, the rated voltage of the body 1 is 40.5kV. In this embodiment, the isolating blade shaft of the body 1 adopts a circular linear-acting Ørma shaft, which reduces the size of the isolating blade and makes the body 1 suitable for outgoing line cabinets. Grounding and closing via vacuum circuit breakers are more reliable, and the current of the body 1 can be increased to 1250A, with a breaking current of 31.5KA. The mounting assembly 2 can fix the body 1 to the wall, making the body 1 less susceptible to loosening due to power grid vibration, ensuring the fastening force between the ring network high-current circuit breaker and the wall, thereby improving the safety of using the ring network high-current circuit breaker.

[0038] Reference Figure 3 and Figure 4 The mounting assembly 2 includes a clamping bar 21, a sliding bar 22, a control bar 23, a force-applying block 24, a second elastic element 25, a first elastic element 26, and multiple fixing bolts 27. The surface of the main body 1 is provided with multiple fixing holes 11 for the ends of the fixing bolts 27 to pass through. The arrangement direction of the fixing holes 11 is parallel to the length direction of the main body 1, and the axis of the fixing holes 11 is parallel to the width direction of the main body 1. The fixing holes 11 penetrate the outer wall of the main body 1 along their own axis. The ends of the fixing bolts 27 pass through the fixing holes 11 and are threaded and tightened to fix them to the wall. The surface of the main body 1 is pressed against the wall to form a fixation, thereby realizing the fixation of the ring network high current circuit breaker.

[0039] Reference Figure 3 and Figure 4The number of sliding rods 22 can be one, two, or more. In this embodiment, there are two sliding rods 22. Two sliding tracks 12 are provided on the surface of the body 1 at intervals for the sliding rods 22 to slide. The sliding direction of the sliding rods 22 is parallel to the height direction of the body 1. Multiple fixing holes 11 are located between the two sliding tracks 12. The clamping bar 21 includes a clamping part 211 and an airbag part 212. The material of the airbag part 212 can be rubber or silicone. In this embodiment, the material of the airbag part 212 is rubber, which has a certain deformation capacity. The airbag part 212 is fixed on the surface of the clamping part 211. The two ends of the clamping part 211 in the length direction are fixed one-to-one with the end of the sliding rod 22 that protrudes from the body 1. The surface of the airbag part 212 faces the opening of the multiple fixing holes 11. The surface of the airbag part 212 and the surface of the body 1 can clamp the two ends of the fixing bolt 27 nut to form a limit, so that the fixing bolt 27 is not easily rotated in the fixing hole 11 due to vibration, thereby improving the stability of the ring network high current circuit breaker fixing.

[0040] Reference Figure 3 and Figure 4 The elastic element 26 can be a compression spring or a tension spring. In this embodiment, the elastic element 26 is a compression spring, which has a certain deformation capability. The number of elastic elements 26 can be one, two or more. In this embodiment, there are two elastic elements 26. The elastic elements 26 correspond one-to-one with the slide rod 22. One end of the elastic element 26 in the direction of elastic force is connected to the inner wall of the slide rail 12, and the other end of the elastic element 26 in the direction of elastic force is connected to the surface of the slide rod 22. The elastic element 26 has the elastic force to drive the slide rod 22 to slide towards the fixing hole 11. The surface of the airbag part 212 faces the opening of the fixing hole 11, and the surface of the airbag part 212 and the surface of the body 1 clamp the two ends of the fixing bolt 27 nut to form a limiting position.

[0041] Reference Figure 3 and Figure 4 One of the slides 12 has a control channel 13 on its inner wall for the control bar 23 to slide. The sliding direction of the control bar 23 is parallel to the length direction of the body 1. The control channel 13 is located on the side of the fixing hole 11 near the elastic element 26. The elastic element 25 can be a compression spring or a tension spring. In this embodiment, the elastic element 25 is a compression spring and has a certain deformation capability. One end of the elastic element 25 in the elastic direction is connected to the inner wall of the control channel 13, and the other end of the elastic element 25 in the elastic direction is connected to the surface of the control bar 23. The elastic element 25 has the elastic force to drive the control bar 23 to slide towards the slide 12, and the end of the control bar 23 protrudes from the inner wall of the slide 12.

[0042] Reference Figure 3 and Figure 4The surface of the main body 1 has a force-applying cavity 14 for the sliding of the force-applying block 24. The sliding direction of the force-applying block 24 is parallel to the sliding direction of the control bar 23. The force-applying cavity 14 is connected to the control flow channel 13. One end of the force-applying block 24 is fixed to the end face of the control bar 23 facing the force-applying cavity 14, and the other end of the force-applying block 24 protrudes from the surface of the main body 1 for the user to hold. When the ring network high current circuit breaker is installed, the user holds the force-applying block 24 and drives it to overcome the elastic force of the elastic element 25 and slide along the inner wall of the force-applying cavity 14, which in turn drives the control bar 23 to move away from the slide rail 12 along the inner wall of the control flow channel 13. Sliding: The end face of control bar 23 is flush with the inner wall of slide rail 12, driving slide rod 22 to slide along the inner wall of slide rail 12 towards the direction of elastic element 26. Slide rod 22 is located on the side of control bar 23 away from fixing hole 11. When force block 24 is released, the supporting effect on force block 24 disappears, and elastic element 25 drives control bar 23 to slide along the inner wall of control channel 13 towards the direction of slide rail 12. The end of control bar 23 protruding from the inner wall of slide rail 12 abuts against the rod surface of slide rod 22 and limits slide rod 22 to approach fixing hole 11. The end of fixing bolt 27 passes through fixing hole 11 and is threaded. Tighten and fix it to the wall surface. Hold the force application block 24 and drive it to slide along the inner wall of the force application cavity 14 against the elastic force of the second elastic element 25. This causes the control bar 23 to slide along the inner wall of the control channel 13 away from the slide rail 12. The end face of the control bar 23 is flush with the inner wall of the slide rail 12. The contact effect of the control bar 23 with the slide rod 22 disappears. The elastic force of the first elastic element 26 drives the slide rod 22 to slide along the slide rail 12 towards the fixing hole 11. This causes the airbag part 212 to approach the fixing bolt 27. The surface of the airbag part 212 and the surface of the body 1 clamp the two ends of the fixing bolt 27 nut. The airbag 212 is compressed and deformed, reducing wear between the airbag 212 and the fixing bolt 27, ensuring the fastening force between the airbag 212 and the fixing bolt 27, and making it less likely for the fixing bolt 27 to shift within the fixing hole 11. This improves the stability of the ring network high current circuit breaker installation. The fixing bolt 27 is less likely to be affected by power grid vibration and produce slight relative movement, ensuring the limiting stability of the fixing bolt 27 within the fixing hole 11, improving the fastening force between the ring network high current circuit breaker and the wall, and thus enhancing the safety of the ring network high current circuit breaker.

[0043] Reference Figure 3 and Figure 4The main body 1 is equipped with a clamping assembly 3, which increases the tightening force on the fixing bolt 27. The clamping assembly 3 includes multiple clamping pistons 31 and multiple elastic elements 32. The clamping pistons 31 can be made of rubber or silicone. In this embodiment, the clamping pistons 31 are made of rubber and have a certain deformation capacity. The elastic elements 32 can be compression springs or tension springs. In this embodiment, the elastic elements 32 are compression springs and have a certain deformation capacity. The inner wall of the fixing hole 11 is provided with a... The pressing piston 31 slides into the pressing chamber 15. The sliding direction of the pressing piston 31 is parallel to the sliding direction of the slide rod 22. The elastic element 32 corresponds to the pressing piston 31. One end of the elastic element 32 in the elastic direction is connected to the inner wall of the pressing chamber 15, and the other end of the elastic element 32 in the elastic direction is connected to the surface of the pressing piston 31. The elastic element 32 has the elastic force to drive the pressing piston 31 to slide towards the fixing hole 11, and the end of the pressing piston 31 protrudes from the inner wall of the fixing hole 11.

[0044] Reference Figure 3 and Figure 4 The end of the pressing piston 31 protruding from the inner wall of the fixing hole 11 is provided with a buffer surface 311. The buffer surface 311 is in the shape of a rounded protrusion. When the end of the fixing bolt 27 passes through the fixing hole 11 and is threaded and fixed to the wall, the buffer surface 311 abuts against the surface of the fixing bolt 27 and guides the pressing piston 31 to slide towards the pressing cavity 15, reducing the wear between the pressing piston 31 and the fixing bolt 27, thereby improving the installation efficiency of the fixing bolt 27. At the same time, the elastic element 32 drives the buffer surface 311 to press against the surface of the fixing bolt 27, increasing the fastening force between the pressing piston 31 and the fixing bolt 27, making it less likely for the pressing piston 31 to shift in the fixing hole 11, thereby further improving the stability of the installation of the ring network high current circuit breaker.

[0045] Reference Figure 4 and Figure 5The clamping part 211 is equipped with an inflation assembly 4, which can directionally inflate the inner cavity of the airbag part 212 to ensure the fastening force between the airbag part 212 and the fixing bolt 27. The inflation assembly 4 includes a thermal expansion and contraction block 41, multiple elastic elements 42, and multiple inflation pistons 43. The thermal expansion and contraction block 41 can be made of nylon or shape memory alloy. In this embodiment, the thermal expansion and contraction block 41 is made of shape memory alloy, which has a good coefficient of thermal expansion. The surface of the clamping part 211 facing away from the airbag part 212 has a deformation cavity 2111 for the thermal expansion and contraction block 41 to deform. The length direction of the deformation cavity 2111 is parallel to the height direction of the body 1. The inflation piston 43 can be made of rubber or silicone. In this embodiment, the inflation piston 43 is made of rubber, which has a certain deformation capacity. The bottom wall of the deformation cavity 2111 is provided with multiple air passages 2112 for the inflation piston 43 to slide. The arrangement direction of the air passages 2112 is parallel to the height direction of the body 1. The sliding direction of the inflation piston 43 is parallel to the axis of the fixing hole 11. The elastic element 42 can be a compression spring or a tension spring. In this embodiment, the elastic element 42 is a compression spring and has a certain deformation capacity. The elastic element 42 corresponds to the inflation piston 43 one by one. One end of the elastic element 42 in the elastic direction is connected to the inner wall of the air passage 2112, and the other end of the elastic element 42 in the elastic direction is connected to the surface of the inflation piston 43. The elastic element 42 has the elastic force to drive the inflation piston 43 to slide away from the air passage 2112, and the end of the inflation piston 43 tends to protrude from the bottom wall of the deformation cavity 2111.

[0046] Reference Figure 4 and Figure 5 The end of the inflatable piston 43 protruding from the bottom of the deformation cavity 2111 is provided with a guide surface 431, which is arc-shaped and convex. Multiple inflatable air passages 2112 are connected to the inner cavity of the air bag 212. When the high-current circuit breaker of the ring network operates for a long time and heats up, the body 1 transfers some of the heat energy to the thermal expansion and contraction block 41. The thermal expansion and contraction block 41 heats up and expands. The thermal expansion and contraction block 41 approaches the inflatable piston 43 along the inner wall of the deformation cavity 2111, and the guide surface 431 abuts against the thermal expansion block. The surface of the cold shrink block 41 guides the inflation piston 43 to approach the inflation channel 2112. The guide surface 431 is flush with the bottom wall of the deformation cavity 2111. The air pressure in the inflation channel 2112 increases, and the air in the inflation channel 2112 enters the inner cavity of the airbag part 212. The surface of the airbag part 212 is pressurized and expands and presses against the surface of the fixing bolt 27, making the fixing bolt 27 less likely to heat up and expand and loosen, further improving the limiting stability of the fixing bolt 27 in the inner wall of the fixing hole 11.

[0047] Reference Figure 4 and Figure 5The pressing part 211 is equipped with a cooling component 5, which can cool the main body 1. The cooling component 5 includes a heat dissipation impeller 51, an elastic element 42, and a connecting rope 53. The heat dissipation impeller 51 is rotatably connected to the surface of the pressing part 211 away from the airbag part 212. The air outlet end of the heat dissipation impeller 51 faces the surface of the main body 1. The axis of the heat dissipation impeller 51 and the axis of the fixing hole 11 are parallel to each other. One end of the connecting rope 53 is fixed to the surface of the thermal expansion and contraction block 41, and the other end of the connecting rope 53 is fixed to the outer wall of the rotating shaft of the heat dissipation impeller 51. The elastic element 4 52 can be a disc spring or a tension spring. In this embodiment, the elastic element 4 52 is a disc spring, which has a certain deformation capability. One end of the elastic element 4 52 in the direction of elastic force is connected to the outer wall of the rotating shaft of the heat dissipation impeller 51, and the other end of the elastic element 4 52 in the direction of elastic force is connected to the surface of the body 1. The elastic element 4 52 has the elastic force to drive the heat dissipation impeller 51 to rotate. The connecting rope 53 is wrapped around the outer circumference of the rotating shaft of the heat dissipation impeller 51, and the connecting rope 53 between the heat dissipation impeller 51 and the thermal expansion and contraction block 41 tends to be in a taut state.

[0048] Reference Figure 4 and Figure 5 When the thermal expansion and contraction block 41 heats up and expands, the distance between the thermal expansion and contraction block 41 and the rotating shaft of the heat dissipation impeller 51 lengthens. The connecting rope 53 drives the heat dissipation impeller 51 to rotate, and the heat dissipation impeller 51 pushes air to impact the surface of the body 1. The body 1 comes into full contact with the air and exchanges heat, thereby cooling the body 1. When the thermal expansion and contraction block 41 cools down and contracts, the distance between the thermal expansion and contraction block 41 and the rotating shaft of the heat dissipation impeller 51 decreases. The elastic element 42 drives the heat dissipation impeller 51 to rotate in the opposite direction. The connecting rope 53 is wrapped around the outer circumference of the rotating shaft of the heat dissipation impeller 51, and the connecting rope 53 between the heat dissipation impeller 51 and the thermal expansion and contraction block 41 is in a taut state, thereby achieving directional rotation of the heat dissipation impeller 51 and improving the heat dissipation efficiency of the ring network high current circuit breaker.

[0049] The implementation principle of a 40.5kV ring network high-current circuit breaker according to an embodiment of this application is as follows: During the installation of the ring network high-current circuit breaker, the force block 24 is held and driven to overcome the elastic force of the second elastic element 25 and slide along the inner wall of the force application cavity 14, which drives the control bar 23 to slide along the inner wall of the control channel 13 in a direction away from the slide rail 12. The end face of the control bar 23 is flush with the inner wall of the slide rail 12, which drives the slide rod 22 to slide along the inner wall of the slide rail 12 in a direction close to the first elastic element 26. The slide rod 22 is located away from the control bar 23 and away from the fixed position. On one side of hole 11, release the force block 24. The support effect on the force block 24 disappears. The elastic force of the second elastic element 25 drives the control bar 23 to slide along the inner wall of the control channel 13 towards the slide rail 12. The end of the control bar 23 protruding from the inner wall of the slide rail 12 abuts against the surface of the slide rod 22 and limits the slide rod 22 to approach the fixing hole 11. The end of the fixing bolt 27 passes through the fixing hole 11 and is threaded and fixed to the wall surface. Hold the force block 24 and drive the force block 24 to overcome the elastic force of the second elastic element 25 along the force application cavity 14. The wall slides, causing the control bar 23 to slide away from the slide rail 12 along the inner wall of the control channel 13. The end face of the control bar 23 is flush with the inner wall of the slide rail 12, and the contact effect of the control bar 23 on the slide rod 22 disappears. The elastic element 26 drives the slide rod 22 to slide along the slide rail 12 towards the fixing hole 11, causing the airbag part 212 to approach the fixing bolt 27. The surface of the airbag part 212 and the surface of the body 1 clamp the two ends of the fixing bolt 27 nut to form a limit. The airbag part 212 is deformed under pressure, reducing the pressure on the airbag part 212. Wear between the airbag part 212 and the fixing bolt 27 ensures the fastening force between the airbag part 212 and the fixing bolt 27, making it less likely for the fixing bolt 27 to shift within the inner wall of the fixing hole 11, thereby improving the stability of the ring network high current circuit breaker installation. The fixing bolt 27 is less likely to be affected by power grid vibration and produce slight relative movement, ensuring the limiting stability of the fixing bolt 27 within the fixing hole 11, improving the fastening force between the ring network high current circuit breaker and the wall, thereby enhancing the safety of the ring network high current circuit breaker in use.

[0050] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A 40.5kV ring network high-current circuit breaker, characterized in that: The device includes a body (1) and an installation assembly (2). The installation assembly (2) includes a clamping strip (21), a sliding rod (22), an elastic element (26), and multiple fixing bolts (27). The surface of the body (1) is provided with multiple fixing holes (11) for the ends of the fixing bolts (27) to pass through. The ends of the fixing bolts (27) pass through the fixing holes (11) and are threaded and fixed to the wall to form a limit. The surface of the body (1) is provided with a sliding track (12) for the sliding rod (22) to slide. The sliding direction of (22) is perpendicular to the axis of the fixing hole (11). The end of the slide rod (22) away from the slide rail (12) is connected to the surface of the abutment strip (21). The length direction of the abutment strip (21) is parallel to the arrangement direction of the fixing hole (11). One end of the elastic element (26) in the elastic direction is connected to the inner wall of the slide rail (12), and the other end of the elastic element (26) in the elastic direction is connected to the rod surface of the slide rod (22). The elastic element (26) has the elasticity to drive the slide rod (22) towards The sliding direction is closer to the fixing hole (11), and the surface of the clamping strip (21) and the surface of the body (1) tend to clamp the two ends of the fixing bolt (27) nut to form a limiting position; the clamping strip (21) includes a clamping part (211) and an airbag part (212). The clamping part (211) is connected to the rod surface of the slide rod (22). One side of the airbag part (212) is connected to the surface of the clamping part (211) facing the fixing hole (11), and the other side of the airbag part (212) can abut against the surface of the body (1). The fixing bolt (27) has two ends of the nut forming a limit; the clamping part (211) is connected to the inflation assembly (4), the inflation assembly (4) includes multiple inflation pistons (43), the clamping part (211) is provided with multiple inflation channels (2112) for the inflation pistons (43) to slide on the surface away from the airbag part (212), the sliding direction of the inflation piston (43) is parallel to the axis of the fixing hole (11), and the multiple inflation channels (2112) are connected to the inner cavity of the airbag part (212).

2. A 40.5kV ring network high-current circuit breaker according to claim 1, characterized in that: The mounting assembly (2) also includes a control strip (23). The inner wall of the slide rail (12) is provided with a control flow channel (13) for the control strip (23) to slide. The sliding direction of the control strip (23) is parallel to the arrangement direction of the fixing holes (11). The control strip (23) is located on the side of the slide rod (22) close to the elastic element (26). When the slide rod (22) slides away from the fixing hole (11) and the control strip (23) slides closer to the slide rail (12), the end face of the control strip (23) protrudes from the slide rail (12) and abuts against the surface of the slide rod (22) and limits the slide rod (22) to approach the fixing hole (11).

3. A 40.5kV ring network high-current circuit breaker according to claim 2, characterized in that: The mounting assembly (2) further includes a force-applying block (24) and an elastic element (25). The surface of the body (1) is provided with a force-applying cavity (14) for the force-applying block (24) to slide. The sliding direction of the force-applying block (24) is parallel to the sliding direction of the control strip (23). The force-applying cavity (14) is connected to the control channel (13). One end of the force-applying block (24) is connected to the surface of the control strip (23), and the other end of the force-applying block (24) protrudes from the surface of the body (1). One end of the elastic element (25) in the elastic direction is connected to the inner wall of the control channel (13), and the other end of the elastic element (25) in the elastic direction is connected to the surface of the control strip (23). The elastic element (25) has the elasticity to drive the control strip (23) to slide towards the slide (12), and the end of the control strip (23) tends to protrude from the inner wall of the slide (12).

4. A 40.5kV ring network high-current circuit breaker according to claim 1, characterized in that: The inflation assembly (4) also includes a thermal expansion and contraction block (41). The surface of the pressing part (211) facing away from the airbag part (212) is provided with a deformation cavity (2111) for the thermal expansion and contraction block (41) to deform. The deformation cavity (2111) is connected to multiple inflation channels (2112). When the thermal expansion and contraction block (41) heats up and expands, the surface of the thermal expansion and contraction block (41) abuts against the end of the inflation piston (43) protruding from the inner wall of the deformation cavity (2111) and drives the inflation piston (43) to slide towards the inflation channel (2112).

5. A 40.5kV ring network high-current circuit breaker according to claim 4, characterized in that: The inflation assembly (4) also includes a plurality of elastic elements (42), each corresponding to an inflation piston (43). One end of the elastic element (42) in the elastic direction is connected to the inner wall of the inflation channel (2112), and the other end of the elastic element (42) in the elastic direction is connected to the surface of the inflation piston (43). The elastic element (42) has the elastic force to drive the inflation piston (43) to slide towards the deformation cavity (2111), and the end of the inflation piston (43) tends to protrude from the inner wall of the deformation cavity (2111).

6. A 40.5kV ring network high-current circuit breaker according to claim 5, characterized in that: The end of the inflation piston (43) protruding from the deformation cavity (2111) is provided with a guide surface (431). The guide surface (431) is in the shape of a circular arc protrusion. The guide surface (431) can abut against the surface of the thermal expansion and contraction block (41) and guide the inflation piston (43) to slide towards the inflation channel (2112).

7. A 40.5kV ring network high-current circuit breaker according to claim 4, characterized in that: The clamping part (211) is connected to a cooling component (5). The cooling component (5) includes an elastic element (52), a heat dissipation impeller (51), and a connecting rope (53). The heat dissipation impeller (51) is rotatably connected to the surface of the clamping part (211) facing the body (1). One end of the connecting rope (53) is connected to the rotating shaft of the heat dissipation impeller (51), and the other end of the connecting rope (53) is connected to the surface of the thermal expansion and contraction block (41). One end of the elastic element (52) in the elastic direction is connected to the surface of the clamping part (211), and the other end of the elastic element (52) in the elastic direction is connected to the rotating shaft of the heat dissipation impeller (51). The elastic element (52) has elasticity to drive the heat dissipation impeller (51) to rotate. The connecting rope (53) is wrapped around the outer circumference of the rotating shaft of the heat dissipation impeller (51), and the connecting rope (53) between the heat dissipation impeller (51) and the thermal expansion and contraction block (41) is in a taut state.

8. A 40.5kV ring network high-current circuit breaker according to claim 1, characterized in that: The main body (1) is connected to a clamping assembly (3), which includes multiple clamping pistons (31) and multiple elastic elements (32). The inner wall of each fixing hole (11) is provided with a clamping cavity (15) for the clamping pistons (31) to slide. The sliding direction of the clamping pistons (31) and the sliding direction of the slide rod (22) are parallel to each other. Each elastic element (32) corresponds to a clamping piston (31). One end of the elastic element (32) in the elastic direction is connected to the inner wall of the clamping cavity (15), and the other end of the elastic element (32) in the elastic direction is connected to the inner wall of the clamping cavity (15). The inner wall of the pressing cavity (15) has an elastic force that drives the pressing piston (31) to slide towards the fixing hole (11), and the end of the pressing piston (31) tends to protrude from the inner wall of the fixing hole (11). When the end of the fixing bolt (27) passes through the fixing hole (11) and is threaded and fixed to the wall, the surface of the fixing bolt (27) abuts against the surface of the pressing piston (31) and drives the pressing piston (31) to slide towards the pressing cavity (15), and the end face of the pressing piston (31) abuts against the surface of the fixing bolt (27) to form a limit.

Images