A distribution switch and a distribution cabinet

Abstract

The present invention discloses a distribution switch and a distribution cabinet, relating to the technical field of distribution switches, including a main body mechanism. The main body mechanism includes a housing. A pull rod is rotatably connected to the inner cavity of the housing. One end of the pull rod is fixedly connected to a moving contact. Both the pull rod and the moving contact are rotatably connected to the inner cavity of the housing. An arc extinguishing cavity is arranged in the inner cavity of the housing, and an arc extinguishing mechanism is arranged in the inner cavity of the arc extinguishing cavity. The arc extinguishing mechanism includes an early segmentation unit arranged in the inner cavity of the arc extinguishing cavity; the arc extinguishing mechanism includes an air extraction unit arranged in the inner cavity of the arc extinguishing cavity; the arc extinguishing mechanism further includes a turbulence unit arranged in the arc extinguishing cavity. For this distribution switch, by arranging the arc extinguishing mechanism, it is possible to realize the early cutting of the arc by means of the movement of the moving contact, and realize the extraction of external air, increase the air flow speed in the arc extinguishing cavity, realize the cooling and elimination of the arc, and improve the arc extinguishing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of distribution switches, and specifically to a distribution switch and a distribution cabinet. Background Art

[0002] A distribution switch refers to a complete set of control devices that can close and open the load current, overload current, and short - circuit current of a medium - voltage distribution line. It mainly consists of a main switch, a control device, a support housing, etc. When the contacts of the distribution switch are separated, an arc will be generated. The existence of the arc will prolong the opening time of the circuit, which may cause greater damage to the power supply and distribution system due to faults. At the same time, the high temperature of the arc will damage the switch contacts and may lead to short - circuit or poor contact situations. Usually, a grid is used inside the distribution switch to divide the arc, and then the air inside the grid is used to cool and extinguish the divided arc. However, the position of the grid is fixed, and the arc needs to move to the grid position by itself inside the distribution switch, which prolongs the existence time of the arc. Moreover, the air inside the grid is in a non - flowing state, making it difficult to accelerate the cooling and extinguishing of the arc, thus reducing the arc - extinguishing efficiency.

[0003] Combining the above problems, we will find that when the existing distribution switches on the market are in use, it is very difficult to avoid the above - mentioned problems at the same time. And even if they can be solved, external tools need to be used for cooperation, thus unable to achieve the desired effect. Therefore, we propose a distribution switch and a distribution cabinet. Summary of the Invention

[0004] The purpose of the present invention is to provide a distribution switch and a distribution cabinet to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A distribution switch includes a main body mechanism. A pull rod is rotatably connected to the inner cavity of the housing. One end of the pull rod is fixedly connected to a moving contact, and a static contact is fixedly connected to the inner wall of the housing. The static contact is used in cooperation with the moving contact. An arc - extinguishing cavity is provided in the inner cavity of the housing, and an arc - extinguishing mechanism is provided in the inner cavity of the arc - extinguishing cavity;

[0006] The arc - extinguishing mechanism includes an early - splitting unit, which is arranged in the inner cavity of the arc - extinguishing cavity and is used for early splitting of the arc;

[0007] The arc - extinguishing mechanism includes an air - pumping unit, which is arranged in the inner cavity of the arc - extinguishing cavity and is used for pumping external air into the arc - extinguishing cavity;

[0008] The arc - extinguishing mechanism further includes a turbulence unit, which is arranged in the arc - extinguishing cavity and is located inside the early - splitting unit. The turbulence unit is used for generating turbulence when the air flows.

[0009] Preferably, the pre-splitting unit includes a gas collecting frame, both sides of the gas collecting frame are fixedly connected to the inner wall of the housing, a plurality of first clamping frames are fixedly connected to the inner cavity of the gas collecting frame, the plurality of first clamping frames are equidistantly distributed, a second clamping frame is slidably connected to the inner cavity of each of the plurality of first clamping frames, a clamping plate is slidably connected to the inner cavity of each of the plurality of second clamping frames, a connecting plate is fixedly connected to one side of the plurality of clamping plates together, the connecting plate is slidably connected to the inner cavity of the gas collecting frame, a plurality of cutting plates are fixedly connected to one side of the connecting plate, the plurality of cutting plates and the plurality of first clamping frames are arranged in a staggered manner, a connecting rod is fixedly connected to one side of the moving contact, an arc-shaped rack is fixedly connected to one end of the connecting rod, a short rod is fixedly connected to the inner wall of the housing, a sleeve is rotatably connected to the surface of the short rod, a one-way bearing is fixedly installed at one end of the sleeve, a gear rod is rotatably connected to one end of the sleeve through the one-way bearing, the surface of the gear rod is meshed with the surface of the arc-shaped rack, a tungsten wire rope is fixedly connected to the surface of the sleeve, the tungsten wire rope is wound around the surface of the sleeve, and one end of the tungsten wire rope is fixedly connected to one side of one of the cutting plates.

[0010] Preferably, a first torsion spring is movably sleeved on the surface of the short rod, one end of the first torsion spring is fixedly connected to the surface of the short rod, and the other end of the first torsion spring is fixedly connected to the inner wall of the sleeve.

[0011] Preferably, three sliding grooves are formed in the inner wall of the housing, sliding blocks are slidably connected to the inner cavities of the three sliding grooves, and one side of each of the three sliding blocks is fixedly connected to one side of three of the cutting plates respectively.

[0012] Preferably, a guide rod is fixedly connected to the inner wall of the sliding groove, the inner wall of the sliding block is slidably connected to the surface of the guide rod, a first spring is movably sleeved on the surface of the guide rod, one end of the first spring is fixedly connected to the bottom of the sliding block, and the other end of the first spring is fixedly connected to the inner wall of the sliding groove.

[0013] Preferably, the air extraction unit includes a piston ring, the inner side of the piston ring is fixedly connected to the surface of the connecting plate, the outer surface of the piston ring is slidably connected to the inner side of the gas collecting frame, a baffle is fixedly connected to one side of the gas collecting frame, an air extraction cavity is formed between the baffle and the housing, a flow groove is formed in the inner cavity of the connecting plate and the cutting plate together, a plurality of one-way valves are fixedly communicated with the inner wall of the connecting plate, a trapezoidal air inlet hole is formed in one side of the housing, a trapezoidal blocking block is slidably connected to the inner cavity of the trapezoidal air inlet hole, and an air outlet hole is formed in one side of the housing, and the air outlet hole is located on the side far from the connecting plate.

[0014] Preferably, two positioning blocks are fixedly connected to the surface of the trapezoidal blocking block, two sliding rods are fixedly connected to the inner side of the housing, the inner wall of the positioning block is slidably connected to the surface of the sliding rod, limiting pieces are fixedly connected to one ends of the two sliding rods, second springs are slidably sleeved on the surfaces of the two sliding rods, and two ends of each second spring are fixedly connected to one side of the limiting piece and the inner wall of the housing respectively.

[0015] Preferably, inhibition coatings are coated on the surfaces of the cutting plate, the first card frame, the second card frame and the card plate, and the inhibition coatings are made of nano materials.

[0016] Preferably, the turbulence unit includes through holes which are opened on the surface of the cutting plate. The number of through holes on the surface of each cutting plate is one group, and the number of through holes in each group is two. The two through holes are both communicated with the flow grooves. Two curve blocks are fixedly connected to the inner side of one of the through holes, two upper plates and two lower plates are fixedly connected to the inner side of the other through hole, and the upper plates and the lower plates are arranged in a staggered manner.

[0017] Preferably, a power distribution cabinet includes a power distribution cabinet. The inner wall of the power distribution cabinet is fixedly connected to one side of the housing. Two closing doors are rotatably connected to the surface of the power distribution cabinet. Ventilation holes are opened on the outer side of the power distribution cabinet, and filter screens are fixedly connected to the inner walls of the ventilation holes.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. By arranging the pre-separation unit, the present invention can drive the cutting plate to move forward to the position where the arc generates through the movement of the moving contact, so as to realize the pre-separation of the arc, thereby accelerating the consumption of the arc energy, accelerating the elimination of the arc, and improving the arc extinguishing efficiency.

[0020] 2. By arranging the air extraction unit, the present invention can extract the external air through the movement of the cutting plate close to the arc, and realize the introduction of the extracted air into the arc extinguishing chamber through the reset movement of the cutting plate, so as to accelerate the air flow speed in the arc extinguishing chamber, thereby realizing the rapid cooling of the divided arc and improving the arc extinguishing efficiency.

[0021] 3. By arranging the turbulence unit, the present invention can change the air flow path, realize the multi-directional cooling of the divided arc, increase the contact area between the air and the arc, and thus improve the arc extinguishing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 is a distribution schematic diagram of the arc extinguishing mechanism of the present invention;

[0024] Figure 3 For the present invention Figure 2 An enlarged schematic view of part A in the present invention;

[0025] Figure 4 A three-dimensional schematic view of the housing of the present invention;

[0026] Figure 5 A three-dimensional schematic view of the arc extinguishing chamber of the present invention;

[0027] Figure 6 A partially disassembled three-dimensional schematic view of the pre-separation unit of the present invention;

[0028] Figure 7 A three-dimensional schematic view of the cutting plate of the present invention;

[0029] Figure 8 A three-dimensional schematic view of the turbulence unit of the present invention;

[0030] Figure 9 A three-dimensional schematic view of the sliding block, guide rod and first spring of the present invention;

[0031] Figure 10 A three-dimensional schematic view of the sliding groove of the present invention;

[0032] Figure 11 A separation schematic view of the trapezoidal plugging block and trapezoidal air inlet hole of the present invention;

[0033] Figure 12 A sectional view of the inhibition coating of the present invention.

[0034] In the figure: 1. Main body mechanism; 11. Housing; 12. Pull rod; 13. Moving contact; 14. Arc extinguishing chamber; 15. Static contact; 2. Arc extinguishing mechanism; 21. Pre-separation unit; 2101. Gas collection frame; 2102. First clamping frame; 2103. Second clamping frame; 2104. Clamping plate; 2105. Connecting plate; 2106. Cutting plate; 2107. Connecting rod; 2108. Arc-shaped rack; 2109. Short rod; 2110. Sleeve; 2111. Gear rod; 2112. Tungsten wire rope; 2113. First torsion spring; 2114. Sliding groove; 2115. Sliding block; 2116. Guide rod; 2117. First spring; 2118. One-way bearing; 22. Air extraction unit; 2201. Piston ring; 2202. Baffle; 2203. Air extraction chamber; 2204. Flow groove; 2205. Check valve; 2206. Trapezoidal air inlet hole; 2207. Trapezoidal plugging block; 2208. Air outlet hole; 2209. Positioning block; 2210. Slide rod; 2211. Limiting piece; 2212. Second spring; 2213. Inhibition coating; 23. Turbulence unit; 2301. Through hole; 2302. Curved block; 2303. Upper plate; 2304. Lower plate; 3. Power distribution cabinet; 31. Closed door; 32. Ventilation hole; 33. Filter screen. Detailed implementation manners

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1: Please refer to Figure 1 - Figure 12 , the present invention provides a technical solution: a distribution switch, including a main body mechanism 1. The main body mechanism 1 includes a housing 11. A pull rod 12 is rotatably connected to the inner cavity of the housing 11. One end of the pull rod 12 is fixedly connected to a moving contact 13. A static contact 15 is fixedly connected to the inner wall of the housing 11. The static contact 15 is used in cooperation with the moving contact 13. The pull rod 12 is used to control the opening and closing of the distribution switch. When the pull rod 12 is pushed upward, the moving contact 13 contacts the static contact 15 of the distribution switch. When the pull rod 12 is pulled downward, the moving contact 13 separates from the static contact 15 of the distribution switch. This is the prior art, so it will not be elaborated too much. An arc extinguishing chamber 14 is arranged in the inner cavity of the housing 11. The arc extinguishing chamber 14 is a chamber for extinguishing arcs. An arc extinguishing mechanism 2 is arranged in the inner cavity of the arc extinguishing chamber 14;

[0037] The arc extinguishing mechanism 2 includes an early splitting unit 21. The early splitting unit 21 is arranged in the inner cavity of the arc extinguishing chamber 14. The early splitting unit 21 is used for early splitting of the arc;

[0038] The arc extinguishing mechanism 2 includes an air extraction unit 22. The air extraction unit 22 is arranged in the inner cavity of the arc extinguishing chamber 14. The air extraction unit 22 is used for pumping external air into the arc extinguishing chamber 14;

[0039] The arc extinguishing mechanism 2 further includes a turbulence unit 23. The turbulence unit 23 is arranged in the arc extinguishing chamber 14. The turbulence unit 23 is located inside the early splitting unit 21. The turbulence unit 23 is used for generating turbulence when air flows.

[0040] As a further limitation of the arc extinguishing mechanism 2 of the present invention, the pre-separation unit 21 includes a gas collecting frame 2101. Both sides of the gas collecting frame 2101 are fixedly connected to the inner wall of the housing 11. A plurality of first clamping frames 2102 are fixedly connected to the inner cavity of the gas collecting frame 2101. The plurality of first clamping frames 2102 are arranged at equal distances. A second clamping frame 2103 is slidably connected to the inner cavity of each of the plurality of first clamping frames 2102. A clamping plate 2104 is slidably connected to the inner cavity of each of the plurality of second clamping frames 2103. A connecting plate 2105 is fixedly connected to one side of the plurality of clamping plates 2104. The connecting plate 2105 is slidably connected to the inner cavity of the gas collecting frame 2101. A plurality of cutting plates 2106 are fixedly connected to one side of the connecting plate 2105. The plurality of cutting plates 2106 are arranged staggeredly with the plurality of first clamping frames 2102. A connecting rod 2107 is fixedly connected to one side of the moving contact 13. An arc-shaped rack 2108 is fixedly connected to one end of the connecting rod 2107. A short rod 2109 is fixedly connected to the inner wall of the housing 11. A sleeve 2110 is rotatably connected to the surface of the short rod 2109. A one-way bearing 2118 is fixedly installed at one end of the sleeve 2110. A gear rod 2111 is rotatably connected to one end of the sleeve 2110 through the one-way bearing 2118. The surface of the gear rod 2111 meshes with the surface of the arc-shaped rack 2108. A tungsten wire rope 2112 is fixedly connected to the surface of the sleeve 2110. The tungsten wire rope 2112 is wound around the surface of the sleeve 2110. One end of the tungsten wire rope 2112 is fixedly connected to one side of one of the cutting plates 2106; by setting the pre-separation unit 21, it is possible to drive the cutting plates 2106 to move forward to the position where the arc is generated through the movement of the moving contact 13, realizing the pre-separation of the arc, thereby accelerating the consumption of the arc energy, accelerating the extinction of the arc, and improving the arc extinguishing efficiency.

[0041] A first torsion spring 2113 is movably sleeved on the surface of the short rod 2109. One end of the first torsion spring 2113 is fixedly connected to the surface of the short rod 2109. The other end of the first torsion spring 2113 is fixedly connected to the inner wall of the sleeve 2110; by setting the first torsion spring 2113, it is possible to realize the elastic limit of the rotation angle between the sleeve 2110 and the short rod 2109, and through the reaction force of the first torsion spring 2113, it is possible to realize the reset of the sleeve 2110 after rotation, thereby driving the rewound tungsten wire rope 2112 to unwind and extend again, avoiding hindering the movement of the partition plate, and ensuring the normal operation of the arc extinguishing operation.

[0042] Three sliding grooves 2114 are opened on the inner wall of the housing 11. A sliding block 2115 is slidably connected to the inner cavity of each of the three sliding grooves 2114. One side of each of the three sliding blocks 2115 is fixedly connected to one side of three of the cutting plates 2106 respectively; through the cooperation of the sliding grooves 2114 and the sliding blocks 2115, it is possible to realize the guiding of the movement of the cutting plates 2106, increase the smoothness of the movement of the cutting plates 2106, and ensure the stability of the arc cutting.

[0043] A guide rod 2116 is fixedly connected to the inner wall of the sliding groove 2114. The inner wall of the sliding block 2115 is slidably connected to the surface of the guide rod 2116. A first spring 2117 is movably sleeved on the surface of the guide rod 2116. One end of the first spring 2117 is fixedly connected to the bottom of the sliding block 2115, and the other end of the first spring 2117 is fixedly connected to the inner wall of the sliding groove 2114. By providing the guide rod 2116 and the first spring 2117, the moving trajectory of the sliding block 2115 can be guided, ensuring the stability of the cutting plate 2106 during movement, and the reaction force of the first spring 2117 can achieve the reset of the cutting plate 2106 after displacement.

[0044] The specific implementation of this embodiment is as follows: when the pull rod 12 is pulled downward to close the distribution switch, the downward pulling of the pull rod 12 drives the moving contact 13 to flip upward and separate from the static contact 15. At the moment when the moving contact 13 is separated from the static contact 15, a high-temperature arc is generated. The arc is pulled into the arc extinguishing chamber 14 under the action of the magnetic field. When the moving contact 13 flips upward, it drives the connecting rod 2107 and the arc-shaped rack 2108 to move. When the arc-shaped rack 2108 moves, the gear rod 2111 rotates counterclockwise. The rotation of the gear rod 2111 drives the sleeve 2110 to rotate. The rotation of the sleeve 2110 drives the tungsten wire rope 2112 to rotate. The winding of the tungsten wire rope 2112 pulls the cutting plate 2106 downward and approaches the arc generating point. When the sleeve 2110 rotates, it drives the first torsion spring 2113 to deform. At this time, the arc cooperates with the opposite movement of the cutting plate 2106, effectively shortening the moving path of the arc, causing the cutting plate 2106 to move toward the arc, realizing early segmentation of the arc. When the cutting plate 2106 moves, it drives the sliding block 2115 to move on the surface of the guide rod 2116 and the inner cavity of the sliding groove 2114. At this time, the sliding block 2115 compresses the first spring 2117. When the cutting plate 2106 moves, it drives the clamping plate 2104 in the second clamping frame 2103. The inner cavity moves, and when the card plate 2104 moves to a certain position, it drives the second card frame 2103 to slide in the inner cavity of the first card frame 2102. Through the arrangement of the first card frame 2102, the second card frame 2103 and the card plate 2104, the arc extinguishing cavity 14 can be equally divided while the cutting plate 2106 moves. When the arc moves to the first card frame 2102, the arc can be divided again after division. When the moving contact 13 rotates to the final position, the arc rack 2108 is disengaged from the gear rod 2111. When the arc rack 2108 moves in the opposite direction, the gear rod 2111 is rotated by the arrangement of the one-way bearing 2118. , will not drive the sleeve 2110 to rotate, so that the tungsten wire rope 2112 will not continue to be unwound when the moving contact 13 returns. At this time, the reaction force of the first torsion spring 2113 drives the sleeve 2110 to reset and rotate on the surface of the short rod 2109. The reset rotation of the sleeve 2110 realizes the reset and unwinding of the tungsten wire rope 2112. At this time, the reaction force of the first spring 2117 is cooperated to realize the reset movement of the cutting plate 2106. Before the cutting plate 2106 resets and moves, the arc has entered the arc extinguishing chamber 14, so that the arc is divided in advance by the cutting plate 2106, which accelerates the consumption of arc energy, accelerates the extinguishing of the arc, and improves the efficiency of arc extinguishing.

[0045] Example 2: Please refer to Figure 1 - Figure 12 The present invention provides a technical solution: a distribution switch. The present invention makes corresponding improvements to the technical problems mentioned in the background technology.

[0046] As a further limitation of the arc extinguishing mechanism 2 of the present invention, the air extraction unit 22 includes a piston ring 2201. The inner side of the piston ring 2201 is fixedly connected to the surface of the connecting plate 2105. The outer surface of the piston ring 2201 is slidably connected to the inner side of the air collecting frame 2101. One side of the air collecting frame 2101 is fixedly connected with a baffle 2202. An air extraction chamber 2203 is formed between the baffle 2202 and the housing 11. A flow channel 2204 is jointly opened in the inner cavities of the connecting plate 2105 and the cutting plate 2106. The inner wall of the connecting plate 2105 is fixedly communicated with a plurality of one-way valves 2205. One side of the housing 11 is provided with a trapezoidal air inlet hole 2206. A trapezoidal blocking block 2207 is slidably connected in the inner cavity of the trapezoidal air inlet hole 2206. One side of the housing 11 is provided with an air outlet hole 2208. The air outlet hole 2208 is located on the side far from the connecting plate 2105. By setting the air extraction unit 22, the extraction of external air can be realized through the movement of the cutting plate 2106 close to the arc. The reset movement of the cutting plate 2106 realizes the introduction of the extracted air into the arc extinguishing chamber 14, accelerating the air flow speed in the arc extinguishing chamber 14, thereby realizing the rapid cooling of the divided arc and improving the arc extinguishing efficiency.

[0047] Two positioning blocks 2209 are fixedly connected to the surface of the trapezoidal blocking block 2207. Two sliding rods 2210 are fixedly connected to the inner side of the housing 11. The inner wall of the positioning block 2209 is slidably connected to the surface of the sliding rod 2210. One ends of the two sliding rods 2210 are both fixedly connected with limiting pieces 2211. The surfaces of the two sliding rods 2210 are both slidably sleeved with second springs 2212. The two ends of the second spring 2212 are respectively fixedly connected with one side of the limiting piece 2211 and the inner wall of the housing 11. Through the combined use of the positioning block 2209, the sliding rod 2210, the limiting piece 2211 and the second spring 2212, the sliding limit of the trapezoidal blocking block 2207 can be realized, and the movement guiding of the trapezoidal blocking block 2207 can be realized, so that the trapezoidal blocking block 2207 can accurately fit into the inner cavity of the trapezoidal air inlet hole 2206. The reaction force of the second spring 2212 can realize the tight fitting of the trapezoidal blocking block 2207 and the inner cavity of the trapezoidal air inlet hole 2206, ensuring the sealing performance of the trapezoidal air inlet hole 2206 when the air extraction unit 22 does not extract air.

[0048] The surfaces of the cutting plate 2106, the first clamping frame 2102, the second clamping frame 2103 and the clamping plate 2104 are all coated with an inhibition coating 2213. The inhibition coating 2213 is made of nanomaterials. By setting the inhibition coating 2213 made of nanomaterials, due to the characteristics of high specific surface area and good thermal conductivity of nanomaterials, after the arc enters the arc extinguishing chamber, it can more effectively absorb and dissipate heat, quickly cool the arc, reduce the energy of the arc, and accelerate the extinguishing of the arc.

[0049] The specific implementation of this embodiment is as follows: When the cutting plate 2106 moves towards the arc direction, it drives the connecting plate 2105 to move. The movement of the connecting plate 2105 drives the piston ring 2201 to move within the inner cavity of the air collection frame 2101. The movement of the piston ring 2201 causes the inner cavity of the air extraction chamber 2203 to form a negative pressure. As the piston ring 2201 moves, the external air pressure pushes the trapezoidal blocking block 2207 to move towards the inner cavity of the housing 11 within the inner cavity of the trapezoidal air intake hole 2206. The trapezoidal blocking block 2207 realizes the guiding of the sliding trajectory and the limiting of the moving distance through the positioning block 2209, the sliding rod 2210, and the limiting piece 2211. At this time, the movement of the trapezoidal blocking block 2207 compresses the second spring 2212, and a gap is generated between the trapezoidal blocking block 2207 and the trapezoidal air intake hole 2206, providing a channel for the external air to enter the air extraction chamber 2203. As the connecting plate 2105 moves, the external air is extracted and injected into the air extraction chamber 2203. When the cutting plate 2106 moves back to its original position, the connecting plate 2105 also moves back to its original position simultaneously. At this time, the air pressure within the air extraction chamber 2203 causes the trapezoidal blocking block 2207 to re-embed into the inner cavity of the trapezoidal air intake hole 2206, preventing the leakage of the air within the air extraction chamber 2203. During the process of the connecting plate 2105 moving back to its original position, due to the air pressure within the air extraction chamber 2203, the check valve 2205 is opened. The air within the air extraction chamber 2203 enters the inner cavity of the flow groove 2204 through the check valve 2205, and then enters the turbulence unit 23 through the flow groove 2204, accelerating the air flow speed within the arc extinguishing chamber 14, achieving the cooling and extinguishing of the cut arc, thereby improving the arc extinguishing efficiency. The arc extinguished air flows out through the air outlet hole 2208, ensuring the air circulation within the arc extinguishing chamber 14.

[0050] Embodiment 3: Please refer to Figure 1 - Figure 12 , the present invention provides a technical solution: a distribution switch, and the present invention makes corresponding improvements to the technical problems mentioned in the background art.

[0051] As a further limitation of the arc extinguishing mechanism 2 of the present invention, the turbulence unit 23 includes through holes 2301, and the through holes 2301 are opened on the surface of the cutting plate 2106. The number of through holes 2301 on the surface of each cutting plate 2106 is one group, and the number of through holes 2301 in each group is two. Both of the two through holes 2301 are connected to the flow groove 2204. Two curve blocks 2302 are fixedly connected to the inner side of one of the through holes 2301, and two upper plates 2303 and two lower plates 2304 are fixedly connected to the inner side of the other through hole 2301, and the upper plates 2303 and the lower plates 2304 are arranged in a staggered manner; by setting the turbulence unit 23, the air flow path can be changed, realizing the multi-directional cooling of the divided arc, increasing the contact area between the air and the arc, thereby improving the arc extinguishing efficiency.

[0052] The specific implementation manner of this embodiment is as follows: The air that enters the flow channel 2204 enters the inner cavity of the arc extinguishing groove through the through hole 2301. When the air enters the through hole 2301, due to the setting of the curved block 2302, the upper plate 2303 and the lower plate 2304 in the through hole 2301, when the air flow path encounters the curved block 2302, the upper plate 2303 and the lower plate 2304, the air flow will be forced to change direction, forming vortices and velocity gradients around the curved block 2302, the upper plate 2303 and the lower plate 2304. The interaction of these vortices and velocity gradients will cause the air flow to change from laminar flow to turbulent flow, thereby increasing the contact area between the air and the arc, improving the cooling efficiency of the arc, and thus enhancing the arc extinguishing efficiency.

[0053] A distribution cabinet includes a distribution cabinet 3. The inner wall of the distribution cabinet 3 is fixedly connected to one side of the housing 11. Two closing doors 31 are rotatably connected to the surface of the distribution cabinet. Vent holes 32 are provided on the outside of the distribution cabinet 3, and a filter screen 33 is fixedly connected to the inner wall of the vent holes 32; By providing the closing doors 31, the distribution cabinet 3 can be closed. The vent holes 32 and the filter screen 33 can enable the air inside the distribution cabinet 3 to circulate, realizing the dissipation of the heat in the inner cavity of the distribution cabinet 3, and the filter screen 33 can filter the floating dust in the outside air.

[0054] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0055] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power distribution switch, comprising a main body (1), the main body (1) comprising a housing (11), the inner cavity of the housing (11) being rotatably connected to a pull rod (12), one end of the pull rod (12) being fixedly connected to a moving contact (13), the inner wall of the housing (11) being fixedly connected to a stationary contact (15), the stationary contact (15) being used in conjunction with the moving contact (13), the inner cavity of the housing (11) being provided with an arc extinguishing chamber (14), and characterized in that: The inner cavity of the arc extinguishing cavity (14) is provided with an arc extinguishing mechanism (2); The arc extinguishing mechanism (2) comprises an early splitting unit (21), the early splitting unit (21) is arranged in the inner cavity of the arc extinguishing cavity (14), the early splitting unit (21) comprises a gas collecting frame (2101), both sides of the gas collecting frame (2101) are fixedly connected to the inner wall of the shell (11), the inner cavity of the gas collecting frame (2101) is fixedly connected to a plurality of first clamping frames (2102), the plurality of first clamping frames (2102) are distributed at equal distances, and the plurality of first clamping frames (2102) are fixedly connected to the inner cavity of the gas collecting frame (2101). The inner cavity of the card frame (2102) is slidably connected to the second card frame (2103), the inner cavities of several second card frames (2103) are slidably connected to the card plate (2104), one side of several card plates (2104) is fixedly connected to a connecting plate (2105), the connecting plate (2105) is slidably connected to the inner cavity of the gas collecting frame (2101), one side of the connecting plate (2105) is fixedly connected to several cutting plates (2106), several cutting plates ( 2106) are staggeredly arranged with a plurality of the first card frames (2102), one side of the moving contact (13) is fixedly connected to a connecting rod (2107), one end of the connecting rod (2107) is fixedly connected to an arc-shaped rack (2108), the inner wall of the housing (11) is fixedly connected to a short rod (2109), the surface of the short rod (2109) is rotatably connected to a sleeve (2110), and one end of the sleeve (2110) is fixedly installed with a one-way bearing (2118) One end of the sleeve (2110) is rotatably connected to a gear rod (2111) via a one-way bearing (2118), the surface of the gear rod (2111) is engaged with the surface of the arc-shaped rack (2108), and the surface of the sleeve (2110) is fixedly connected to a tungsten wire rope (2112), which is wound around the surface of the sleeve (2110), and one end of the tungsten wire rope (2112) is fixedly connected to one side of one of the cutting plates (2106); The arc extinguishing mechanism (2) comprises an air extraction unit (22), and the air extraction unit (22) is arranged in the inner cavity of the arc extinguishing cavity (14); The arc extinguishing mechanism (2) further comprises a turbulence unit (23), wherein the turbulence unit (23) is arranged in the arc extinguishing chamber (14), and the turbulence unit (23) is located inside the early splitting unit (21).

2. A power distribution switch according to claim 1, characterized in that: The surface of the short rod (2109) is movably sleeved with a first torsion spring (2113), one end of the first torsion spring (2113) is fixedly connected to the surface of the short rod (2109), and the other end of the first torsion spring (2113) is fixedly connected to the inner wall of the sleeve (2110).

3. The power distribution switch according to claim 1, characterized in that: The inner wall of the shell (11) is provided with three sliding grooves (2114), the inner cavities of the three sliding grooves (2114) are all slidably connected to sliding blocks (2115), and one side of the three sliding blocks (2115) is fixedly connected to one side of three of the cutting plates (2106).

4. A power distribution switch according to claim 3, characterized in that: The inner wall of the sliding groove (2114) is fixedly connected to a guide rod (2116), the inner wall of the sliding block (2115) is slidably connected to the surface of the guide rod (2116), and the surface of the guide rod (2116) is movably sleeved with a first spring (2117), one end of the first spring (2117) is fixedly connected to the bottom of the sliding block (2115), and the other end of the first spring (2117) is fixedly connected to the inner wall of the sliding groove (2114).

5. The power distribution switch according to claim 1, characterized in that: The air extraction unit (22) comprises a piston ring (2201), the inner side of the piston ring (2201) is fixedly connected to the surface of the connecting plate (2105), the outer surface of the piston ring (2201) is slidably connected to the inner side of the gas collecting frame (2101), a baffle (2202) is fixedly connected to one side of the gas collecting frame (2101), an air extraction cavity (2203) is formed between the baffle (2202) and the housing (11), and the connecting plate (2105) is connected to the cutting plate (2105). 06) is provided with a flow groove (2204) in the inner cavity, the inner wall of the connecting plate (2105) is fixedly connected with a plurality of one-way valves (2205), a trapezoidal air inlet hole (2206) is provided on one side of the shell (11), and a trapezoidal blocking block (2207) is slidably connected to the inner cavity of the trapezoidal air inlet hole (2206), and an air outlet hole (2208) is provided on one side of the shell (11), and the air outlet hole (2208) is located on the side away from the connecting plate (2105).

6. A power distribution switch according to claim 5, characterized in that: Two positioning blocks (2209) are fixedly connected to the surface of the trapezoidal blocking block (2207), and two sliding rods (2210) are fixedly connected to the inner side of the shell (11). The inner wall of the positioning block (2209) is slidably connected to the surface of the sliding rod (2210), and one end of the two sliding rods (2210) is fixedly connected to the limiting plate (2211). The surfaces of the two sliding rods (2210) are slidably sleeved with a second spring (2212), and the two ends of the second spring (2212) are respectively fixedly connected to one side of the limiting plate (2211) and the inner wall of the shell (11).

7. The power distribution switch according to claim 1, characterized in that: The surfaces of the cutting plate (2106), the first clamping frame (2102), the second clamping frame (2103) and the clamping plate (2104) are all coated with an inhibitory coating (2213), and the inhibitory coating (2213) is made of nanomaterials.

8. The power distribution switch according to claim 1, characterized in that: The turbulence unit (23) includes a through hole (2301), and the through hole (2301) is opened on the surface of the cutting plate (2106). The number of through holes (2301) on the surface of each cutting plate (2106) is one group, and the number of through holes (2301) in each group is two. The two through holes (2301) are both connected to the flow groove (2204), and the inner side of one of the through holes (2301) is fixedly connected to two curve blocks (2302), and the inner side of the other through hole (2301) is fixedly connected to two upper plates (2303) and two lower plates (2304), and the upper plates (2303) and the lower plates (2304) are staggered.

9. A power distribution cabinet, characterized in that: The invention comprises a power distribution cabinet (3), wherein the inner wall of the power distribution cabinet (3) is installed with a power distribution switch according to any one of claims 1 to 8, the inner wall of the power distribution cabinet (3) is fixedly connected to one side of the shell (11), two closed doors (31) are rotatably connected to the surface of the power distribution cabinet, an air vent (32) is opened on the outer side of the power distribution cabinet, and a filter (33) is fixedly connected to the inner wall of the air vent (32).

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