High breaking measurement switch

Abstract

The invention relates to the technical field of measuring switches, in particular to a high breaking measuring switch which comprises a shell, a switch is fixedly connected to the interior of the shell, wires are fixedly connected to the top end and the bottom end of the switch, and one end of each wire penetrates to the exterior of the shell; the shell comprises a mounting plate, the switch is fixedly connected to one end of the mounting plate, and a protective shell is hinged to the surface of the mounting plate; the mounting plate and the protective shell cooperate to isolate the switch from the outside, and the protective mechanism blocks and fills gaps among the lead, the lead port and the mounting plate on the premise of not influencing normal use of the lead, so that external moisture is prevented from entering the protective shell, and the switch is enabled to run in a clean and dry environment all the time. Therefore, the probability of short-circuit fault of the switch caused by excessive moisture is reduced, the switch can still operate normally in an environment with relatively high moisture, and the application range of the high-breaking measurement switch is expanded.

Description

Technical Field

[0001] This invention relates to the field of measurement switch technology, and in particular to a high breaking capacity measurement switch. Background Technology

[0002] A high-breaking capacity measuring switch is a high-precision, high-stability electrical measuring instrument with high voltage and high current breaking capacity, capable of accurately measuring the corresponding parameters of electrical equipment.

[0003] Reference 1: Chinese patent discloses a high-safety protection measuring switch (publication number CN217306415U). By connecting a protective component to the fixing screw hole on the front side of the measuring switch, the protective component seals the fixing bolt connected to the measuring switch, preventing the bolt from being exposed, preventing accidental contact, and reducing the occurrence of contact accidents.

[0004] Reference Material 2: Chinese patent discloses a high-temperature resistant measuring switch (publication number CN217182063U), which uses an exhaust fan to blow away the heat generated outside the measuring switch body. The hot air is discharged through the gap between the measuring switch body and the protective cover. The air guide groove can accelerate the outflow of hot air, and the heat conduction groove can effectively increase the contact area between the protective cover and the outside, thereby improving the heat dissipation effect.

[0005] According to references 1 and 2 above, existing high breaking capacity switches have poor protection performance and are prone to overheating. Reference 1 only protects the screws locking the wires, leaving the wiring holes of the high breaking capacity switch exposed. Moisture can enter the interior of the high breaking capacity switch through the wiring holes, which can easily corrode the screws. Reference 2 directly introduces external air into the interior of the high breaking capacity switch. If the humidity in the surrounding air is high, the high humidity air being drawn into the interior of the high breaking capacity switch can easily cause a short circuit in the electrical structure of the high breaking capacity switch, posing a significant safety hazard. Summary of the Invention

[0006] The purpose of this invention is to provide a high breaking capacity measurement switch to solve the above-mentioned problems, thereby improving the poor gas protection performance of existing high breaking capacity measurement switches and making it difficult to operate in high humidity environments.

[0007] The present invention achieves the above-mentioned objective through the following technical solution: a high breaking capacity measuring switch, comprising: a housing, a switch fixedly connected inside the housing, and wires fixedly connected to both the top and bottom ends of the switch, one end of the wires extending to the outside of the housing; the housing includes a mounting plate, the switch fixedly connected to one end of the mounting plate, a protective shell hinged to the surface of the mounting plate, the switch disposed inside the protective shell, one end of the wires extending into the interior of the protective shell, two protective mechanisms, both in contact with the mounting plate, being installed inside the protective shell, the protective mechanisms wrapping around the surface of the wires, a cooling mechanism installed on the surface of the protective shell, and a fireproof mechanism installed inside the protective shell.

[0008] Preferably, the protective shell has wire openings at both the top and bottom ends, and the protective mechanism includes a first airbag, which is embedded inside the wire opening and wraps around the surface of the wire.

[0009] Preferably, one end of the protective shell has an air inlet, the other end of the protective shell has an air outlet, and the interior of the protective shell has an annular cavity communicating with the air inlet and the air outlet. The cooling mechanism includes a fan and an annular filter assembly. The fan is fixedly connected to the inner wall of the air inlet, the annular filter assembly is slidably connected to the interior of the annular cavity, and the fan is located on the inner side of the annular filter assembly.

[0010] Preferably, the ring-type filter assembly includes a moisture-absorbing ring belt, which is slidably connected to the inside of the ring cavity. The moisture-absorbing ring belt is a sponge material component, and filter ring belts, which are made of nylon material, are fixedly connected to both the inner and outer sides of the moisture-absorbing ring belt.

[0011] Preferably, the protective mechanism further includes a square box, which is fixedly connected to the inside of the wire inlet. A second airbag is placed on the inner wall of the square box. One end of the second airbag is fixedly connected to and communicates with an air guide tube. One end of the air guide tube passes through the square box and is fixedly connected to and communicates with the first airbag. A push plate that contacts the second airbag is slidably connected to the inner wall of the square box. One end of the push plate passes through the square box and contacts the mounting plate.

[0012] Preferably, the horizontal cross-sectional shape of the push plate is I-shaped, and the vertical cross-sectional shape of the push plate is the same as the vertical cross-sectional shape inside the square box.

[0013] Preferably, the cooling mechanism further includes a humidity controller and a toothed belt. The humidity controller is fixedly connected to the inner wall of the air inlet and is located between the fan and the moisture-absorbing ring belt. The toothed belt is fixedly connected to one end of the moisture-absorbing ring belt. The inner side of the toothed belt is connected to a pulley that is rotatably connected to the ring cavity. One end of the pulley is fixedly connected to a dual-head motor that is fixedly connected to the ring cavity.

[0014] Preferably, there are two toothed belts and two pulleys. The two toothed belts are fixedly connected to the two ends of the moisture-absorbing ring belt, the two ends of the two filter ring belts are fixedly connected to the two toothed belts, and the opposite ends of the two pulleys are fixedly connected to the two output shafts of the dual-head motor.

[0015] Preferably, the inner walls of the air inlet and air outlet are rotatably connected with uniformly distributed baffles, the distance between two adjacent baffles is less than the height of the baffle, the angle between the baffle and the inner bottom wall of the mounting plate is 75 degrees, and the opening of the angle between the baffle and the inner bottom wall of the mounting plate faces away from the hinge between the mounting plate and the protective shell.

[0016] Preferably, the protective shell has a mounting groove on its vertical inner wall. The fireproof mechanism includes a flame controller, an electric push rod, and an inert gas storage tank. The flame controller is fixedly connected to the inner top wall of the protective shell. The electric push rod and the inert gas storage tank are both fixedly connected to the vertical inner wall of the mounting groove. The output end of the electric push rod is fixedly connected to a cone, and the tip of the cone faces the inert gas storage tank.

[0017] Preferably, the surface of the cone-shaped spike is provided with an air guiding channel, and the vertical cross-sectional shape of the air guiding channel is I-shaped.

[0018] The beneficial effects of this invention are:

[0019] 1. The mounting plate and protective housing work together to isolate the switch from the outside world. At the same time, the protective mechanism seals and fills the gaps between the wires, wire openings and mounting plate without affecting the normal use of the wires, so as to prevent external moisture from entering the interior of the protective housing. This ensures that the switch always operates in a clean and dry environment, thereby reducing the probability of short circuit failure due to excessive moisture. This allows the switch to still operate normally in environments with high humidity, thus expanding the application range of this high breaking capacity measurement switch.

[0020] 2. The cooling mechanism can not only effectively dissipate heat and cool the switch in a high humidity environment, but also automatically switch when the moisture absorption structure in the cooling mechanism is saturated, so that the switch always operates in a dry and clean environment. At the same time, the use of heat dissipation exhaust gas for drying and cleaning reduces the power consumption required for cleaning, thereby achieving the purpose of energy saving and emission reduction.

[0021] 3. The fire prevention mechanism can detect whether the internal structure of the protective shell is on fire in real time, and at the same time as the fire is detected, it will quickly fill the protective shell with inert gas. The inert gas will squeeze the air in the protective shell to the outside. At this time, there is no oxygen to support combustion inside the protective shell, so the ignition point inside the protective shell has to be extinguished. At this time, the staff can come to carry out the corresponding handling work to reduce the loss. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the connection between the protective shell and the mounting plate in this invention;

[0023] Figure 2 This is a schematic diagram showing the separation of the protective shell and the mounting plate in this invention;

[0024] Figure 3 for Figure 1 Sectional view along the middle AA direction;

[0025] Figure 4 This is a schematic diagram of the protective mechanism in this invention;

[0026] Figure 5 for Figure 1 Sectional view along the BB direction;

[0027] Figure 6 for Figure 5 Enlarged view at point D;

[0028] Figure 7 This is a schematic diagram of the cooling mechanism in this invention;

[0029] Figure 8 This is an exploded view of the ring-type filter assembly in this invention;

[0030] Figure 9 for Figure 1 A cross-sectional view along the CC direction;

[0031] Figure 10 This is a schematic diagram of the fire-prevention mechanism in this invention;

[0032] Figure 11 This is a cross-sectional view of the cone-shaped puncture in this invention.

[0033] In the diagram: 1. Shell; 11. Mounting plate; 12. Protective shell; 121. Wire inlet; 122. Air inlet; 123. Air outlet; 124. Annular cavity; 125. Mounting groove; 13. Protective mechanism; 131. First airbag; 132. Square box; 133. Second airbag; 134. Air duct; 135. Push plate; 14. Cooling mechanism; 141. Fan; 142. Belt-type filter assembly; 1421. Moisture-absorbing belt; 1422. Filter belt; 143. Humidity controller; 144. Toothed belt; 145. Pulley; 146. Dual-head motor; 15. Fireproof mechanism; 151. Flame controller; 152. Electric push rod; 153. Inert gas storage tank; 154. Cone; 155. Air duct channel; 16. Baffle; 2. Switch; 3. Wire. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0035] In practical implementation: such as Figure 1-11 As shown, a high breaking capacity measuring switch includes: a housing 1, a switch 2 fixedly connected inside the housing 1, and wires 3 fixedly connected to both the top and bottom ends of the switch 2, with one end of the wires 3 penetrating to the outside of the housing 1; the housing 1 includes a mounting plate 11, the switch 2 is fixedly connected to one end of the mounting plate 11, a protective shell 12 is hinged to the surface of the mounting plate 11, the switch 2 is disposed inside the protective shell 12, one end of the wires 3 penetrates into the interior of the protective shell 12, two protective mechanisms 13 are installed inside the protective shell 12 and both are in contact with the mounting plate 11, the protective mechanisms 13 are wrapped around the surface of the wires 3, a cooling mechanism 14 is installed on the surface of the protective shell 12, and a fireproof mechanism 15 is installed inside the protective shell 12;

[0036] The mounting plate 11 has a first sealing ring and a second sealing ring embedded at both ends. The surface of the mounting plate 11 has evenly distributed threaded mounting holes, all located inside the first sealing ring. The protective shell 12 and the two first airbags 131 are in contact with the second sealing ring. The first sealing ring can seal the gap between the mounting plate 11 and the mounting surface, preventing external moisture from entering the interior of the protective shell 12 through the threaded mounting holes, thereby reducing the probability of the switch 2 short-circuiting due to excessive moisture. The second sealing ring can make the seal between the protective shell 12 and the mounting plate 11 tighter, further reducing the probability of the switch 2 short-circuiting due to excessive moisture. A spring clip is fixedly connected to the surface of the mounting plate 11. One end of the spring clip is engaged with a connecting hook fixedly connected to the protective shell 12. The spring clip and connecting hook here are common fixing devices, usually used to connect two objects together or fix a component. It uses the elastic force of the spring to clamp the object and keep it stable. It is a relatively mature and well-known technology. The specific model and installation method need to be selected according to the actual situation, which will not be elaborated here.

[0037] like Figure 3 , Figure 4 and Figure 9As shown, the protective shell 12 has wire inlets 121 at both its top and bottom ends. The protective mechanism 13 includes a first airbag 131, which is embedded inside the wire inlet 121 and covers the surface of the wire 3. The protective mechanism 13 also includes a square box 132, which is fixedly connected to the inside of the wire inlet 121. A second airbag 133 is placed on the inner wall of the square box 132. One end of the second airbag 133 is fixedly connected to and communicates with an air duct 134. One end of the air duct 134 passes through the square box 132 and is fixedly connected to and communicates with the first airbag 131. The inner wall of 132 is slidably connected to a push plate 135 that contacts the second airbag 133. One end of the push plate 135 passes through the square box 132 and contacts the mounting plate 11. This can improve the filling degree of the gap between the wire 3, the wire opening 121 and the mounting plate 11, thereby reducing the probability of the switch 2 operating in a high humidity environment. The horizontal cross-sectional shape of the push plate 135 is I-shaped, and the vertical cross-sectional shape of the push plate 135 is the same as the vertical cross-sectional shape inside the square box 132. This can firmly lock the push plate 135 in the square box 132, reducing the probability of the push plate 135 detaching from the square box 132.

[0038] As the protective shell 12 approaches the mounting plate 11, the mounting plate 11 simultaneously drives the push plate 135 to approach the mounting plate 11 through the wire port 121 and the square box 132. The push plate 135 will contact the mounting plate 11 when the protective shell 12 and the mounting plate 11 are in contact. As the protective shell 12 moves in the subsequent process, the push plate 135 continuously increases the squeezing force on the second airbag 133. The air inside the second airbag 133 enters the interior of the first airbag 131 through the air duct 134. At this time, the air pressure inside the first airbag 131 increases and gradually expands. This can increase the filling degree of the gap between the wire 3, the wire port 121 and the mounting plate 11 by the first airbag 131, and further reduce the probability of the switch 2 operating in a high humidity environment.

[0039] like Figure 3 , Figure 5 , Figure 6 , Figure 7 , Figure 8 and Figure 9As shown, one end of the protective shell 12 has an air inlet 122, and the other end has an air outlet 123. An annular cavity 124 communicating with the air inlet 122 and the air outlet 123 is formed inside the protective shell 12. The cooling mechanism 14 includes a fan 141 and a ring-shaped filter assembly 142. The fan 141 is fixedly connected to the inner wall of the air inlet 122, and the ring-shaped filter assembly 142 is slidably connected to the inside of the annular cavity 124. The fan 141 is located inside the ring-shaped filter assembly 142. The ring-shaped filter assembly 142 includes a moisture-absorbing ring 1421, which slides... The moisture-absorbing ring belt 1421 is made of sponge material and is dynamically connected to the inside of the ring cavity 124. Filter ring belts 1422, made of nylon material, are fixedly connected to both the inner and outer sides of the moisture-absorbing ring belt 1421. This not only effectively reduces the operating temperature of the switch 2, thus reducing the probability of overheating, but also ensures that the switch 2 operates in a clean and dry environment, further reducing the probability of short-circuit failure due to excessive moisture. The cooling mechanism 14 also includes a humidity controller 143 and a toothed belt 144. Humidity controller 143 is fixedly connected to the inner wall of air inlet 122. It is positioned between fan 141 and moisture-absorbing belt 1421. Toothed belt 144 is fixedly connected to one end of moisture-absorbing belt 1421. A pulley 145, rotatably connected to the ring cavity 124, is driven through the inner side of toothed belt 144. A dual-head motor 146, also fixedly connected to the ring cavity 124, is fixedly connected to one end of pulley 145. This allows the moisture-absorbing belt 1421 inside air inlet 122 to automatically replace water after partial saturation, ensuring that switch 2 is always at a safe humidity level. It operates within a certain range and requires no manual adjustment by staff, thus reducing the workload of staff. There are two toothed belts 144 and two pulleys 145. The two toothed belts 144 are fixedly connected to the two ends of the moisture-absorbing ring belt 1421, and the two ends of the two filter ring belts 1422 are fixedly connected to the two toothed belts 144. The opposite ends of the two pulleys 145 are fixedly connected to the two output shafts of the dual-head motor 146. This enables the dual-head motor 146 to drive the ring-type filter assembly 142 more stably, so as to ensure that the ring-type filter assembly 142 can be driven normally.

[0040] During the normal passage of air through the air inlet 122, the humidity controller 143 detects the humidity of the passing air in real time and compares the detected data with preset data. If the detected data is greater than the preset data, it indicates that the humidity of the passing air exceeds the safe range. The humidity controller 143 then controls the dual-head motor 146 according to the preset command. The dual-head motor 146 drives the pulley 145 to rotate, which in turn drives the toothed belt 144. The toothed belt 144 drives the entire annular filter assembly 142. At this time, the annular filter assembly 142 inside the air inlet 122 is partially replaced, and the passing air can be properly filtered by the unused portion of the annular filter assembly 142, ensuring that the air used for cooling and heat dissipation of switch 2 remains clean. Furthermore, when the annular filter assembly 142 passes through the air outlet 123, the air passing through... Air carrying heat continuously passes through the annular filter assembly 142 at the outlet 123. The heat evaporates the moisture inside the moisture-absorbing ring 1421, greatly reducing the adhesion between the moisture and the moisture-absorbing ring 1421. At the same time, the air carries away this water vapor, making the moisture-absorbing ring 1421 drier. This ensures that the moisture-absorbing ring 1421 can always dry the air passing through the outlet 123. Then, as the air passes through the outer filter ring 1422, the air blows away solid impurities adhering to the surface of the outer filter ring 1422, keeping the surface of the outer filter ring 1422 clean. This not only eliminates the need for manual cleaning by personnel, reducing their maintenance burden, but also reduces the power consumption required for cleaning by using exhaust hot air, thus achieving the goal of energy saving and emission reduction.

[0041] like Figure 5 and Figure 6 As shown, the inner walls of the air inlet 122 and the air outlet 123 are rotatably connected with evenly distributed baffles 16. The distance between two adjacent baffles 16 is less than the height of the baffle 16. The angle between the baffle 16 and the inner bottom wall of the mounting plate 11 is 75 degrees. The opening of the angle between the baffle 16 and the inner bottom wall of the mounting plate 11 faces away from the hinge between the mounting plate 11 and the protective shell 12.

[0042] The baffle 16 not only does not affect the operation of the fan 141 and the flow of cooling air, but also blocks the air inlet 122 and the air outlet 123 by overlapping each other when the fan 141 is not running. Even if the moisture-absorbing ring 1421 inside the air inlet 122 and the air outlet 123 is saturated, moisture still cannot enter the interior of the protective shell 12, further ensuring the normal operation of the switch 2.

[0043] like Figure 5 , Figure 9 , Figure 10 and Figure 11As shown, the protective shell 12 has a mounting groove 125 on its vertical inner wall. The fireproof mechanism 15 includes a flame controller 151, an electric push rod 152, and an inert gas storage tank 153. The flame controller 151 is fixedly connected to the inner top wall of the protective shell 12. The electric push rod 152 and the inert gas storage tank 153 are both fixedly connected to the vertical inner wall of the mounting groove 125. The output end of the electric push rod 152 is fixedly connected to a cone 154, with the tip of the cone 154 facing the inert gas storage tank 153. The surface of the cone 154 has a gas guiding channel 155, and the vertical cross-sectional shape of the gas guiding channel 155 is I-shaped. This allows the inert gas to be guided into the protective shell 12 as soon as the cone 154 penetrates the inert gas storage tank 153, thereby accelerating the rate at which the inert gas fills the interior of the protective shell 12.

[0044] When the flame controller 151 detects a fire inside the protective shell 12, it controls the electric push rod 152 to extend according to a preset command. The electric push rod 152 drives the spike 154 to penetrate the inert gas storage tank 153. At the same time, the spike 154 drives the gas guide channel 155 into the interior of the inert gas storage tank 153. At this time, the inert gas quickly fills the protective shell 12 through the gas guide channel 155, squeezing the air in the protective shell 12 to the outside. Since there is no oxygen to support combustion inside the protective shell 12, the ignition point inside the protective shell 12 has to be extinguished. At this time, the staff can come to carry out the corresponding handling work to reduce the loss.

[0045] When using this invention, after the operator fixes the switch 2 to the surface of the mounting plate 11 and connects the wire 3 to the switch 2, the operator only needs to press the protective shell 12 tightly against the mounting plate 11. At this time, the switch 2 is covered between the mounting plate 11 and the protective shell 12. At the same time, the wire 3 is pressed tightly against and squeezed by the first airbag 131 inside the wire opening 121. Under the action of compression, the first airbag 131 wraps around the surface of the wire 3, sealing and filling the gap between the wire 3, the wire opening 121 and the mounting plate 11, so as to prevent external moisture from entering the interior of the protective shell 12. This ensures that the switch 2 always operates in a clean and dry environment, thereby reducing the probability of the switch 2 short-circuiting due to excessive moisture.

[0046] During normal operation of switch 2, fan 141 draws outside air into air inlet 122. As the air passes through air inlet 122, filter ring 1422 first filters out solid impurities such as dust and debris from the air, and then absorbs moisture from the air through absorbent ring 1421, keeping the air passing through air inlet 122 clean and dry. The clean and dry air then carries away the heat passing over the surface of switch 2. This not only effectively reduces the operating temperature of switch 2, thereby reducing the probability of switch 2 overheating, but also ensures that switch 2 always operates in a clean and dry environment, further reducing the probability of short circuit failure due to excessive moisture. Finally, the air carrying heat is discharged to the outside of protective housing 12 through air outlet 123.

[0047] It should be noted that the fan 141, humidity controller 143, dual-head motor 146, flame controller 151, electric actuator 152, switch 2, and wire 3 mentioned above are all devices with relatively mature existing technology. The specific models can be selected according to actual needs. At the same time, the fan 141, humidity controller 143, dual-head motor 146, flame controller 151, electric actuator 152, and switch 2 can be powered by the built-in power supply or by the mains power. The specific power supply method should be selected according to the situation, and will not be elaborated here.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-breakage measurement switch, characterized by, The utility model relates to a shell (1), the inside fixed connection of shell (1) has switch (2), both ends of switch (2) are fixedly connected with wire (3), and one end of wire (3) penetrates to the outside of shell (1). Wherein, the shell (1) includes the mounting plate (11), one end of the switch (2) is fixedly connected to the mounting plate (11), the surface of the mounting plate (11) is hinged with the protective shell (12), the switch (2) is arranged in the inside of protective shell (12), one end of wire (3) penetrates to the inside of protective shell (12), the inside of protective shell (12) is installed with two protective mechanisms (13) that are in contact with mounting plate (11), the protective mechanism (13) is wrapped on the surface of wire (3), the surface of protective shell (12) is installed with cooling mechanism (14), the inside of protective shell (12) is installed with fireproof mechanism (15). Wherein, both ends of the protective shell (12) are provided with wire ports (121), the protective mechanism (13) includes the first air bag (131), the first air bag (131) is embedded and installed in the inside of wire port (121), and the first air bag (131) is wrapped on the surface of wire (3). One end of the protective shell (12) is provided with an air inlet (122), the other end of the protective shell (12) is provided with an air outlet (123), the inside of the protective shell (12) is provided with an annular cavity (124) in communication with the air inlet (122) and the air outlet (123), the cooling mechanism (14) includes a fan (141) and a ring belt type filter assembly (142), the fan (141) is fixedly connected to the inner wall of the air inlet (122), the ring belt type filter assembly (142) is slidingly connected to the inside of the annular cavity (124), and the fan (141) is arranged on the inner side of the ring belt type filter assembly (142).

2. A high-breakage measurement switch according to claim 1, characterized in that: The ring belt type filter assembly (142) includes a moisture absorption ring belt (1421), the moisture absorption ring belt (1421) is slidingly connected to the inside of the annular cavity (124), the moisture absorption ring belt (1421) is a sponge material member, and filter ring belts (1422) are fixedly connected to the inner and outer sides of the moisture absorption ring belt (1421), the filter ring belts (1422) are nylon material members.

3. A high-breakage measurement switch according to claim 2, characterized in that: The protective mechanism (13) further includes a square box (132), the square box (132) is fixedly connected to the inside of the wire port (121), a second air bag (133) is placed on the inner wall of the square box (132), one end of the second air bag (133) is fixedly connected and communicated with an air guide pipe (134), one end of the air guide pipe (134) penetrates the square box (132) and is fixedly connected and communicated with the first air bag (131), a push plate (135) in contact with the second air bag (133) is slidingly connected to the inner wall of the square box (132), and one end of the push plate (135) penetrates the square box (132) and is in contact with the mounting plate (11).

4. The high-breakage measurement switch of claim 1, wherein: ​ 5. A high-dividing measuring switch according to claim 4, characterized in that: The horizontal section shape of the push plate (135) is an H-shaped section, and the vertical section shape of the push plate (135) is the same as the vertical section shape inside the square box (132).

6. A high-dividing measuring switch according to claim 3, characterized in that: The cooling mechanism (14) further comprises a humidity controller (143) and a toothed belt (144), the humidity controller (143) is fixedly connected to the inner wall of the air inlet (122), the humidity controller (143) is arranged between the fan (141) and the moisture absorption ring belt (1421), one end of the toothed belt (144) is fixedly connected to the moisture absorption ring belt (1421), the inner side of the toothed belt (144) is drivingly connected with a belt pulley (145) rotationally connected with the ring cavity (124), one end of the belt pulley (145) is fixedly connected with a double-head motor (146) fixedly connected with the ring cavity (124).

7. A high-dividing measuring switch according to claim 6, characterized in that: The number of the toothed belt (144) and the belt pulley (145) is two, two toothed belts (144) are fixedly connected to both ends of the moisture absorption ring belt (1421), two ends of the two filter ring belts (1422) are fixedly connected with the two toothed belts (144), and the opposite ends of the two belt pulleys (145) are fixedly connected with the two output shafts of the double-head motor (146).

8. A high-breakage measurement switch according to claim 2, characterized in that: The inner walls of the air inlet (122) and the air outlet (123) are rotationally connected with uniformly distributed baffles (16), the spacing between adjacent two baffles (16) is less than the height of the baffle (16), the included angle between the baffle (16) and the inner bottom wall of the mounting plate (11) is seventy-five degrees, and the opening of the included angle between the baffle (16) and the inner bottom wall of the mounting plate (11) faces away from the hinge between the mounting plate (11) and the protective shell (12).

9. The high-dividing measuring switch according to claim 1, characterized in that: The vertical inner wall of the protective shell (12) is provided with a mounting groove (125), the fireproof mechanism (15) comprises a flame controller (151), an electric push rod (152) and an inert gas storage tank (153), the flame controller (151) is fixedly connected to the inner top wall of the protective shell (12), the electric push rod (152) and the inert gas storage tank (153) are fixedly connected to the vertical inner wall of the mounting groove (125), the output end of the electric push rod (152) is fixedly connected with a conical spike (154), and the tip of the conical spike (154) faces the inert gas storage tank (153).

10. A high-voltage measuring switch according to claim 9, characterized in that: The surface of the conical spike (154) is provided with a gas guide channel (155), and the vertical section shape of the gas guide channel (155) is an H-shaped section.

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