Power distribution switch and power distribution cabinet

Abstract

The invention discloses a power distribution switch and a power distribution cabinet, and relates to the technical field of power distribution switchs.The power distribution switch comprises a main body mechanism, the main body mechanism comprises a shell, an inner cavity of the shell is rotationally connected with a pull rod, one end of the pull rod is fixedly connected with a moving contact, and the pull rod and the moving contact are both rotationally connected to the inner cavity of the shell; an inner cavity of the shell is provided with an arc extinguishing cavity, and an inner cavity of the arc extinguishing cavity is provided with an arc extinguishing mechanism; the arc extinguishing mechanism comprises an advanced segmentation unit which is arranged in an inner cavity of the arc extinguishing cavity; the arc extinguishing mechanism comprises an air exhaust unit, and the air exhaust unit is arranged in an inner cavity of the arc extinguishing cavity; the arc extinguishing mechanism further comprises a turbulence unit, the turbulence unit is arranged in the arc extinguishing cavity, the power distribution switch is provided with the arc extinguishing mechanism, the arc can be cut in advance by means of the movement of the moving contact, the external air can be extracted, the flowing speed of the air in the arc extinguishing cavity can be increased, the arc can be cooled and extinguished, and the service life of the power distribution switch can be prolonged. And the arc extinguishing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution switches, and in particular to a power distribution switch and a power 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 is mainly composed of a main switch, a control device and a supporting shell. When the contacts of the distribution switch are separated, an arc will be generated. The existence of the arc will prolong the circuit breaking time and may cause the fault to cause greater damage to the power supply and distribution system. At the same time, the high temperature of the arc will damage the switch contacts and cause a short circuit or poor contact. Usually, a grid is used in the distribution switch to divide the arc, and then the air in the grid is used to cool and extinguish the divided arc. However, the position of the grid is fixed, and the arc itself needs to move to the grid in the distribution switch. At this time, the existence time of the arc is prolonged, and the air in the grid is in a non-flowing state, which makes it difficult to accelerate the cooling and extinguishing of the arc, thereby reducing the efficiency of arc extinguishing.

[0003] Combining the above problems, we will find that it is difficult to avoid the above problems at the same time when using the existing distribution switches on the market, and even if they can be solved, they need to be solved through external tools, which cannot achieve the desired effect. Therefore, we propose a distribution switch and distribution cabinet. Summary of the invention

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

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a power distribution switch, comprising 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, a static contact is fixedly connected to the inner wall of the housing, the static contact is used in conjunction 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; The arc extinguishing mechanism comprises an early splitting unit, which is arranged in the inner cavity of the arc extinguishing cavity and is used to split the arc in advance; The arc extinguishing mechanism comprises an air extraction unit, which is arranged in the inner cavity of the arc extinguishing cavity and is used to extract external air into the arc extinguishing cavity; The arc extinguishing mechanism further comprises a turbulence unit, which is arranged in the arc extinguishing chamber and located inside the advance dividing unit, and is used to generate turbulence when the air flows.

[0006] Preferably, the early splitting unit includes an air collecting frame, both sides of the air collecting frame are fixedly connected to the inner wall of the shell, the inner cavity of the air collecting frame is fixedly connected to a plurality of first card frames, the plurality of first card frames are distributed at equal distances, the inner cavities of a plurality of first card frames are slidably connected to second card frames, the inner cavities of a plurality of second card frames are slidably connected to card plates, one side of a plurality of card plates is commonly fixedly connected to a connecting plate, the connecting plate is slidably connected to the inner cavity of the air collecting frame, one side of the connecting plate is fixedly connected to a plurality of cutting plates, and a plurality of the cutting plates are connected to a plurality of The first card frame is staggered, one side of the moving contact is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to an arc-shaped rack, the inner wall of the shell is fixedly connected to a short rod, the surface of the short rod is rotatably connected to a sleeve, one end of the sleeve is fixedly installed with a one-way bearing, one end of the sleeve is rotatably connected to a gear rod through the one-way bearing, the surface of the gear rod is meshed with the surface of the arc-shaped rack, the surface of the sleeve is fixedly connected to a tungsten wire rope, 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.

[0007] 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.

[0008] Preferably, the inner wall of the shell is provided with three sliding grooves, the inner cavities of the three sliding grooves are slidably connected with sliding blocks, and one side of the three sliding blocks is fixedly connected to one side of three of the cutting plates respectively.

[0009] Preferably, the inner wall of the sliding groove is fixedly connected with a guide rod, the inner wall of the sliding block is slidably connected to the surface of the guide rod, the surface of the guide rod is movably sleeved with a first spring, 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.

[0010] 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 air collecting frame, a baffle is fixedly connected to one side of the air collecting frame, an air extraction chamber is formed between the baffle and the shell, a flow groove is commonly provided in the inner cavity of the connecting plate and the cutting plate, a plurality of one-way valves are fixedly connected to the inner wall of the connecting plate, a trapezoidal air inlet hole is provided on one side of the shell, a trapezoidal blocking block is slidably connected to the inner cavity of the trapezoidal air inlet hole, an air outlet hole is provided on one side of the shell, and the air outlet hole is located on the side away from the connecting plate.

[0011] 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 shell, the inner wall of the positioning block is slidably connected to the surface of the sliding rod, one end of the two sliding rods is fixedly connected to a limiting plate, and the surfaces of the two sliding rods are slidably sleeved with a second spring, and the two ends of the second spring are respectively fixedly connected to one side of the limiting plate and the inner wall of the shell.

[0012] Preferably, surfaces of the cutting plate, the first clamping frame, the second clamping frame and the clamping plate are all coated with an inhibition coating, and the inhibition coating is made of nano material.

[0013] 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 a group, and the number of through holes in each group is two. Both of the through holes are connected to the flow groove, and one of the through holes is fixedly connected to two curve blocks on the inner side, and the other through hole is fixedly connected to two upper plates and two lower plates on the inner side, and the upper plates and the lower plates are staggered.

[0014] Preferably, a power distribution cabinet comprises a power distribution cabinet, wherein the inner wall of the power distribution cabinet is fixedly connected to one side of a shell, two closed doors are rotatably connected to the surface of the power distribution cabinet, an air vent is opened on the outer side of the power distribution cabinet, and a filter is fixedly connected to the inner wall of the air vent.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides an early splitting unit, which can drive the cutting plate to move to the position where the arc is generated in advance through the movement of the moving contact, thereby realizing early splitting of the arc, thereby accelerating the consumption of arc energy, accelerating the extinguishing of the arc, and improving the efficiency of arc extinguishing.

[0016] 2. The present invention provides an exhaust unit, which can extract external air by moving the cutting plate close to the arc. The cutting plate is reset to introduce the extracted air into the arc extinguishing chamber, accelerating the flow rate of the air in the arc extinguishing chamber, thereby achieving rapid cooling of the divided arc and improving the arc extinguishing efficiency.

[0017] 3. The present invention can change the flow path of the air by setting a turbulent unit, realize multi-directional cooling of the arc after segmentation, increase the contact area between the air and the arc, and thus improve the efficiency of arc extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the distribution of the arc extinguishing mechanism of the present invention; Figure 3 For the present invention Figure 2The enlarged schematic diagram of point A in the middle; Figure 4 is a three-dimensional schematic diagram of a housing of the present invention; Figure 5 It is a three-dimensional schematic diagram of the arc extinguishing chamber of the present invention; Figure 6 It is a partial split stereoscopic schematic diagram of the advance splitting unit of the present invention; Figure 7 is a three-dimensional schematic diagram of a cutting board of the present invention; Figure 8 It is a three-dimensional schematic diagram of the turbulence unit of the present invention; Fig. 9 It is a three-dimensional schematic diagram of the sliding block, the guide rod and the first spring of the present invention; Fig.10 It is a three-dimensional schematic diagram of the sliding groove of the present invention; Fig.11 It is a schematic diagram of the separation of the trapezoidal blocking block and the trapezoidal air inlet hole of the present invention; Fig.12 It is a cross-sectional view of the inhibition coating of the present invention.

[0019] In the figure: 1, main body; 11, shell; 12, pull rod; 13, moving contact; 14, arc extinguishing chamber; 15, static contact; 2, arc extinguishing mechanism; 21, early split unit; 2101, gas collecting frame; 2102, first clamping frame; 2103, second clamping frame; 2104, clamping plate; 2105, connecting plate; 2106, cutting plate; 2107, connecting rod; 2108, arc 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 a spring; 2118, a one-way bearing; 22, an exhaust unit; 2201, a piston ring; 2202, a baffle; 2203, an exhaust chamber; 2204, a flow groove; 2205, a one-way valve; 2206, a trapezoidal air inlet hole; 2207, a trapezoidal blocking block; 2208, an air outlet hole; 2209, a positioning block; 2210, a sliding rod; 2211, a limiting plate; 2212, a second spring; 2213, an inhibitory coating; 23, a turbulent unit; 2301, a through hole; 2302, a curve block; 2303, an upper plate; 2304, a lower plate; 3, a distribution cabinet; 31, a closed door; 32, an air vent; 33, a filter. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Example 1: Please refer to Figure 1 - Fig.12 The present invention provides a technical solution: a power distribution switch, including a main body mechanism 1, the main body mechanism 1 includes a shell 11, the inner cavity of the shell 11 is rotatably connected with a pull rod 12, one end of the pull rod 12 is fixedly connected with a moving contact 13, the inner wall of the shell 11 is fixedly connected with a static contact 15, the static contact 15 is used in conjunction with the moving contact 13, the pull rod 12 is used to control the opening and closing of the power distribution switch, when the pull rod 12 is pushed upward, the moving contact 13 contacts with the static contact 15 of the power distribution switch, when the pull rod 12 is pulled downward, the moving contact 13 is separated from the static contact 15 of the power distribution switch, this is the prior art, so no more elaboration is given, the inner cavity of the shell 11 is provided with an arc extinguishing cavity 14, the arc extinguishing cavity 14 is a cavity for extinguishing an arc, and the inner cavity of the arc extinguishing cavity 14 is provided with an arc extinguishing mechanism 2; The arc extinguishing mechanism 2 includes an early splitting unit 21, which is arranged in the inner cavity of the arc extinguishing cavity 14, and is used to split the arc in advance; The arc extinguishing mechanism 2 includes an air extraction unit 22, which is disposed in the inner cavity of the arc extinguishing chamber 14, and is used to extract external air into the arc extinguishing chamber 14; The arc extinguishing mechanism 2 further includes a turbulence unit 23 , which is disposed in the arc extinguishing chamber 14 . The turbulence unit 23 is located inside the advance dividing unit 21 , and is used to generate turbulence when the air flows.

[0022] As a further limitation of the arc extinguishing mechanism 2 of the present invention, the early splitting unit 21 includes an air collecting frame 2101, both sides of the air collecting frame 2101 are fixedly connected to the inner wall of the shell 11, the inner cavity of the air collecting frame 2101 is fixedly connected to a plurality of first card frames 2102, and the plurality of first card frames 2102 are distributed at equal distances, the inner cavities of the plurality of first card frames 2102 are slidably connected to the second card frames 2103, the inner cavities of the plurality of second card frames 2103 are slidably connected to the card plates 2104, one side of the plurality of card plates 2104 is commonly fixedly connected to a connecting plate 2105, the connecting plate 2105 is slidably connected to the inner cavity of the air collecting frame 2101, one side of the connecting plate 2105 is fixedly connected to a plurality of cutting plates 2106, and the plurality of cutting plates 2106 are staggered with the plurality of first card frames 2102, one side of the moving contact 13 is fixedly connected to a connecting rod 2107, and one end of the connecting rod 2107 is fixedly connected to the inner cavity of the air collecting frame 2101. An arc-shaped rack 2108 is fixedly connected, a short rod 2109 is fixedly connected to the inner wall of the shell 11, a sleeve 2110 is rotatably connected to the surface of the short rod 2109, a one-way bearing 2118 is fixedly installed on one end of the sleeve 2110, and 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 is meshed 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, and one end of the tungsten wire rope 2112 is fixedly connected to one side of one of the cutting plates 2106; by setting up the early splitting unit 21, the moving contact 13 can be moved to drive the cutting plate 2106 to move to the position where the arc is generated in advance, thereby realizing early splitting of the arc, thereby accelerating the consumption of arc energy, accelerating the extinction of the arc, and improving the efficiency of arc extinguishing.

[0023] 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, and the other end of the first torsion spring 2113 is fixedly connected to the inner wall of the sleeve 2110; by providing the first torsion spring 2113, the elastic limitation of the rotation angle between the sleeve 2110 and the short rod 2109 can be achieved, and the reaction force of the first torsion spring 2113 can realize the resetting of the sleeve 2110 after rotation, thereby driving the tungsten wire rope 2112 to rewind and extend after being wound, avoiding obstruction to the movement of the partition plate and ensuring the normal operation of the arc extinguishing operation.

[0024] The inner wall of the shell 11 is provided with three sliding grooves 2114, and the inner cavities of the three sliding grooves 2114 are slidably connected with sliding blocks 2115, and one side of the three sliding blocks 2115 is respectively fixedly connected to one side of three cutting plates 2106; through the coordinated use of the sliding grooves 2114 and the sliding blocks 2115, the movement of the cutting plate 2106 can be guided, the stability of the cutting plate 2106 during movement is increased, and the stability of the arc cutting is ensured.

[0025] The inner wall of the sliding groove 2114 is fixedly connected with 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; by arranging the guide rod 2116 and the first spring 2117, the moving trajectory of the sliding block 2115 can be guided, thereby ensuring the stability of the cutting plate 2106 during movement, and the reaction force of the first spring 2117 can realize the resetting of the cutting plate 2106 after displacement.

[0026] The specific implementation of this embodiment is as follows: when the pull rod 12 is pulled downward to close the distribution switch, the pulling downward 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 location. 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, so that the cutting plate 2106 moves toward the arc, and the arc is segmented in advance. 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, and 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 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 reverse 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.

[0027] Example 2: Please refer to Figure 1 - Fig.12 The present invention provides a technical solution: a power distribution switch. The present invention makes corresponding improvements to the technical problems mentioned in the background technology.

[0028] As a further limitation of the arc extinguishing mechanism 2 of the present invention, the exhaust 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 gas collecting frame 2101, a baffle 2202 is fixedly connected to one side of the gas collecting frame 2101, an exhaust cavity 2203 is formed between the baffle 2202 and the shell 11, a flow groove 2204 is jointly provided in the inner cavity of the connecting plate 2105 and the cutting plate 2106, a plurality of one-way valves 2205 are fixedly connected to the inner wall of the connecting plate 2105, and the shell 11 A trapezoidal air inlet hole 2206 is provided on one side, and the inner cavity of the trapezoidal air inlet hole 2206 is slidably connected with a trapezoidal blocking block 2207. 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. By setting up the exhaust unit 22, the external air can be extracted by moving the cutting plate 2106 close to the arc, and the cutting plate 2106 is reset to introduce the extracted air into the arc extinguishing chamber 14, thereby accelerating the flow rate of the air in the arc extinguishing chamber 14, thereby realizing the rapid cooling of the divided arc and improving the arc extinguishing efficiency.

[0029] The surface of the trapezoidal blocking block 2207 is fixedly connected to two positioning blocks 2209, and the inner side of the housing 11 is fixedly connected to two sliding rods 2210. The inner wall of the positioning block 2209 is slidably connected to the surface of the sliding rod 2210. One end of the two sliding rods 2210 is fixedly connected to a limiting piece 2211. The surfaces of the two sliding rods 2210 are slidably sleeved with a second spring 2212. The two ends of the second spring 2212 are respectively fixedly connected to one side of the limiting piece 2211 and the inner wall of the housing 11; through the positioning block 2209 The coordinated use of the sliding rod 2210, the limiting plate 2211 and the second spring 2212 can realize the sliding limitation of the trapezoidal blocking block 2207 and realize the movement guidance of the trapezoidal blocking block 2207, so that the trapezoidal blocking block 2207 can be accurately embedded in the inner cavity of the trapezoidal air inlet hole 2206. The reaction force of the second spring 2212 can realize the tight fit between the trapezoidal blocking block 2207 and the inner cavity of the trapezoidal air inlet hole 2206, thereby ensuring the sealing of the trapezoidal air inlet hole 2206 when the vacuum unit 22 is not vacuuming.

[0030] 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; by setting the inhibitory coating 2213 of nanomaterials, the nanomaterials can absorb and dissipate heat more effectively after the arc enters the arc extinguishing chamber due to their high specific surface area and good thermal conductivity, so that the arc can be cooled quickly, the energy of the arc can be reduced, and the extinction of the arc can be accelerated.

[0031] The specific implementation method of this embodiment is as follows: when the cutting plate 2106 moves in the direction of the arc, it drives the connecting plate 2105 to move. The movement of the connecting plate 2105 drives the piston ring 2201 to move in the inner cavity of the gas collecting frame 2101. The movement of the piston ring 2201 forms a negative pressure in the inner cavity of the air pumping chamber 2203. As the piston ring 2201 moves, the external air pressure pushes the trapezoidal blocking block 2207 to move from the inner cavity of the trapezoidal air inlet hole 2206 to the inner cavity of the shell 11. The trapezoidal blocking block 2207 guides the sliding trajectory and limits the moving distance through the positioning block 2209, the sliding rod 2210 and the limiting plate 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 inlet hole 2206, providing a channel for the outside air to enter the air pumping chamber 2203. When the cutting plate 2106 is reset, the connecting plate 2105 is reset at the same time. At this time, the air pressure in the air extraction chamber 2203 causes the trapezoidal blocking block 2207 to be re-embedded in the inner cavity of the trapezoidal air inlet hole 2206, thereby avoiding the leakage of air in the air extraction chamber 2203. During the reset movement of the connecting plate 2105, due to the air pressure in the air extraction chamber 2203, the one-way valve 2205 is opened, and the air in the air extraction chamber 2203 enters the inner cavity of the flow groove 2204 through the one-way valve 2205, and then enters the turbulence unit 23 through the flow groove 2204, thereby accelerating the flow speed of the air in the arc extinguishing chamber 14, achieving the cooling and extinguishing of the arc after cutting, thereby improving the arc extinguishing efficiency. The air after the arc extinguishing flows out through the air outlet 2208, thereby ensuring the circulation of air in the arc extinguishing chamber 14.

[0032] Example 3: Please refer to Figure 1 - Fig.12 The present invention provides a technical solution: a power distribution switch. The present invention makes corresponding improvements to the technical problems mentioned in the background technology.

[0033] As a further limitation of the arc extinguishing mechanism 2 of the present invention, 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 a group, and the number of through holes 2301 in each group is two. The two through holes 2301 are 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. By setting the turbulence unit 23, the flow path of the air can be changed, the multi-directional cooling of the arc after segmentation can be achieved, the contact area between the air and the arc is increased, and the arc extinguishing efficiency is improved.

[0034] The specific implementation method of this embodiment is as follows: the air after entering the flow groove 2204 enters the inner cavity of the arc extinguishing groove through the through hole 2301. When the air enters the through hole 2301, it passes through the curve block 2302 in the through hole 2301 and the setting of the upper plate 2303 and the lower plate 2304. When the air encounters the curve block 2302, the upper plate 2303 and the lower plate 2304 in the air flow path, the airflow will be forced to change direction, and vortices and velocity gradients will be formed around the curve block 2302, the upper plate 2303 and the lower plate 2304. The interaction of these vortices and velocity gradients will cause the airflow 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 improving the arc extinguishing efficiency.

[0035] A power distribution cabinet comprises a power distribution cabinet 3, the inner wall of which is fixedly connected to one side of a shell 11, two closed doors 31 are rotatably connected to the surface of the power distribution cabinet, an air vent 32 is provided on the outer side of the power distribution cabinet 3, and a filter 33 is fixedly connected to the inner wall of the air vent 32; the power distribution cabinet 3 can be closed by setting the closed door 31, the air vent 32 and the filter 33 can realize the circulation of air inside the power distribution cabinet 3, and the heat of the inner cavity of the power distribution cabinet 3 can be dissipated, and the filter 33 can filter the floating dust in the external air.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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), 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) being arranged in the inner cavity of the arc extinguishing cavity (14), the early splitting unit (21) comprising a gas collecting frame (2101), both sides of the gas collecting frame (2101) being fixedly connected to the inner wall of the housing (11), the inner cavity of the gas collecting frame (2101) being fixedly connected to a plurality of first clamping frames (2102), the plurality of first clamping frames (2102) being distributed at equal distances, and the inner cavities of the plurality of first clamping frames (2102) being slidably connected to a second clamping frame (2103); 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 inner cavities of several second card frames (2103) are all slidably connected to card plates (2104), one side of several card plates (2104) is commonly 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) and several first card frames (2102) are arranged in a staggered manner, 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), and the inner wall of the shell (11) is fixedly A short rod (2109) is fixedly connected, and the surface of the short rod (2109) is rotatably connected to a sleeve (2110), one end of the sleeve (2110) is fixedly installed with a one-way bearing (2118), and one end of the sleeve (2110) is rotatably connected to a gear rod (2111) through the one-way bearing (2118), and the surface of the gear rod (2111) is meshed with the surface of the arc-shaped rack (2108) for use, and the surface of the sleeve (2110) is fixedly connected to a tungsten wire rope (2112), and the tungsten wire rope (2112) 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).

3. A power distribution switch according to claim 2, characterized in that: 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), and the other end of the first torsion spring (2113) is fixedly connected to the inner wall of the sleeve (2110).

4. A power distribution switch according to claim 2, 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 with sliding blocks (2115), and one side of the three sliding blocks (2115) is respectively fixedly connected to one side of three of the cutting plates (2106).

5. A power distribution switch according to claim 4, 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), 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).

6. A power distribution switch according to claim 2, 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) are provided with a flow groove (2204), the inner wall of the connecting plate (2105) is fixedly connected with a plurality of one-way valves (2205), one side of the shell (11) is provided with a trapezoidal air inlet hole (2206), the inner cavity of the trapezoidal air inlet hole (2206) is slidably connected with a trapezoidal blocking block (2207), and one side of the shell (11) is provided with an air outlet hole (2208), and the air outlet hole (2208) is located on the side away from the connecting plate (2105).

7. A power distribution switch according to claim 6, characterized in that: The surface of the trapezoidal blocking block (2207) is fixedly connected to two positioning blocks (2209), the inner side of the shell (11) is fixedly connected to two sliding rods (2210), the inner wall of the positioning block (2209) is slidably connected to the surface of the sliding rod (2210), one end of the two sliding rods (2210) is fixedly connected to a 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).

8. A power distribution switch according to claim 2, 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.

9. A power distribution switch according to claim 2, characterized in that: The turbulence unit (23) comprises a through hole (2301), wherein the through hole (2301) is opened on the surface of the cutting plate (2106), and 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, and the two through holes (2301) are both connected to the flow groove (2204), wherein 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 arranged in a staggered manner.

10. A power distribution cabinet, characterized in that: The invention comprises a power distribution cabinet (3), the inner wall of which is mounted a power distribution switch according to any one of claims 1 to 9, the inner wall of which is fixedly connected to one side of a housing (11), two closed doors (31) are rotatably connected to the surface of the power distribution cabinet, an air vent (32) is provided 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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