An arc generation guiding arc extinguishing hood

Abstract

The invention relates to the technical field of switch arc extinguishing, and discloses an arc generation guiding arc extinguishing cover, comprising a protective shell, a switch structure, a speed change part, a fan and an adsorption part, wherein the switch structure is installed in the protective shell, the switch structure comprises a first arc extinguishing chamber fixed in the protective shell, a clamping plate is arranged at the bottom of the first arc extinguishing chamber, a first copper connector is clamped in the clamping plate, a second arc extinguishing chamber is fixed on the first copper connector, a second copper connector is movably connected to the bottom of the first arc extinguishing chamber, one end of the second copper connector is fitted with the first copper connector, and the other end of the second copper connector is at a set position, when the switch is closed, the first arc extinguishing chamber performs a first arc extinguishing treatment on the arc, and at the same time, the regulating pressure plate presses the second copper connector, so that the second copper connector and the first copper connector guide the arc that cannot be extinguished to the second arc extinguishing chamber, and the second arc extinguishing chamber performs a secondary arc extinguishing treatment, thereby effectively extinguishing the arc and improving the safety and stability of arc extinguishing.

Description

Technical Field

[0001] The invention relates to the technical field of switch arc extinguishing, in particular to an arc generation guiding type arc extinguishing cover. Background Art

[0002] Arc extinguishing hood is a protective device used in electrical equipment, mainly used to reduce and extinguish the generation of arcs. It is usually used in electrical equipment such as switchgear, circuit breakers, contactors, etc. to prevent arcs from damaging the equipment or causing safety hazards such as fires. When electrical equipment disconnects the current, if the current is large, an arc may be generated. The arc extinguishing hood provides a physical barrier to control the propagation of the arc, reduce the temperature and energy of the arc, and thus effectively extinguish the arc to protect the safe operation of the equipment.

[0003] At present, the existing arc extinguishing hood adopts a single structure design. During operation, especially long-term opening and closing of the switch, it will cause aging of the components in the arc extinguishing hood, and the arc generated cannot be fully extinguished, which is prone to fire. At the same time, when extinguishing the arc, the large amount of harmful smoke generated by the instantaneous current cannot be processed, but is directly discharged into the air, which has certain defects. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides an arc-generating guided arc-extinguishing hood, which has the advantages of being able to perform secondary guided arc-extinguishing treatment on the arc that has not been completely extinguished during the arc extinguishing process, and at the same time being able to absorb the harmful gases generated by the arc extinguishing to reduce air pollution, etc. It solves the problem that the current single arc extinguishing method is used, which makes it impossible to perform secondary arc extinguishing treatment on the arc that has not been extinguished, and at the same time cannot treat the harmful gases generated during the arc extinguishing.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an arc-generating guided arc-extinguishing cover, comprising a protective shell, a switch structure, a speed change part, a fan and an adsorption part, wherein the switch structure is installed in the protective shell, the switch structure comprises a first arc-extinguishing chamber fixed in the protective shell, a clamping plate is arranged at the bottom of the first arc-extinguishing chamber, a first copper connector is clamped in the clamping plate, a second arc-extinguishing chamber is fixed on the first copper connector, the first arc-extinguishing chamber is used to perform a first arc-extinguishing treatment on the generated arc, and when the arc-extinguishing treatment is not completely achieved, a secondary arc-extinguishing treatment is performed through the second arc-extinguishing chamber.

[0008] A second copper connector is movably connected to the bottom of the first arc extinguishing chamber, one end of the second copper connector is fitted with the first copper connector, and the other end of the second copper connector is at a set position and can be fitted with the second arc extinguishing chamber. When the first copper connector is separated from the second copper connector, the arc that has not been completely extinguished is guided into the second arc extinguishing chamber for secondary arc extinguishing treatment.

[0009] Two regulating pressure rods are also movably connected to the bottom of the first arc extinguishing chamber, one end of the two regulating pressure rods is located between the first copper connector and the second copper connector, and can simultaneously fit the first copper connector and the second copper connector at a set position. When closing the circuit, the regulating pressure rod is horizontal, and the top of the front end of the regulating pressure rod fits on the first copper connector, and the bottom of the front end of the regulating pressure rod fits on the top of the second copper connector. When opening the circuit, the front end of the regulating pressure rod presses the second copper connector downward, so that the second copper connector is separated from the first copper connector. At this time, the regulating pressure rod does not contact the first copper connector.

[0010] The second copper connector is L-shaped. When one end of the second copper connector is pressed, the other end of the second copper connector is attached to the second arc extinguishing chamber, thereby guiding the arc into the second arc extinguishing chamber to complete the secondary arc extinguishing process.

[0011] The inner side surface opposite to the regulating pressure rod is rotatably connected with a connecting rod, a connecting block is fixed on the connecting rod, a linkage rod is fixed on the connecting block, and a knife is rotatably connected to one end of the linkage rod. When the knife is pushed and pulled, the linkage rod moves up and down to achieve the closing and opening effects of the regulating pressure rod. When closing and opening, the regulating pressure rod rotates with the connecting rod as the axis.

[0012] A first panel is fixed on one side of the first arc extinguishing chamber, and a second panel is fixed on the other side. The first panel is equipped with a fan for blowing harmful gases generated when the switch is opened, and the second panel is equipped with an adsorption member for adsorbing harmful gases.

[0013] A connecting roller is fixed on the side of the second copper connecting piece, and a speed changing piece for increasing the rotation speed of the fan blades is movably connected to one end of the connecting roller.

[0014] When the arc-generating guided arc-extinguishing hood is in use, the switch is pulled to cause the connecting rod to pull the tail end of the regulating pressure rod, so that the front end of the regulating pressure rod presses one end of the second copper connector downward, causing the second copper connector to rotate with the connecting roller as the axis. At this time, the other end of the regulating pressure rod is attached to the side of the second arc-extinguishing chamber, thereby achieving the goal of guiding the unextinguished arc into the second arc-extinguishing chamber for secondary arc-extinguishing treatment.

[0015] As a further improvement of the above solution, the opposite outer side surfaces of the two regulating pressure rods are rotatably connected to positioning rods, and one end of the positioning rod is rotatably connected to a corresponding position in the protective shell.

[0016] Through the above technical solution, when closing and opening the switch, the push-pull force generated by the switch knife causes the regulating pressure rod to rotate with the positioning rod as the axis, thereby improving the stability of closing and opening the switch.

[0017] As a further improvement of the above scheme, the speed change member includes a sleeve fixed in the protective shell, and the first connecting gear, the second connecting gear, the first transmission gear and the second transmission gear are movably connected in the sleeve, the first transmission gear is meshed with the first connecting gear, and the second transmission gear is meshed with the second connecting gear.

[0018] Through the above technical solution, the tooth profile diameter of the first connecting gear meshing with the first transmission gear is different from the tooth profile diameter of the second connecting gear meshing with the second transmission gear, so that the rotational force generated by the meshing rotation of the first connecting gear and the first transmission gear is smaller than the rotational force generated by the meshing rotation of the second connecting gear and the second transmission gear. Therefore, when the first connecting gear rotates and is transmitted to the second transmission gear, a speed change effect is achieved, thereby increasing the rotation speed of the second transmission gear.

[0019] As a further improvement of the above solution, a connecting shaft is fixed between the first connecting gear and the second connecting gear.

[0020] Through the above technical solution, when the first linkage gear rotates, the second linkage gear can be driven to rotate synchronously through the connecting shaft.

[0021] As a further improvement of the above solution, a positioning screw is provided on the side of the sleeve, and one end of the positioning screw is threadedly connected in the protective shell.

[0022] Through the above technical solution, the positioning screw is used to fix the position of the sleeve to avoid shaking and causing tooth disengagement between internal gears.

[0023] As a further improvement of the above solution, one end of the first transmission gear is fixed to one end of the connecting roller.

[0024] Through the above technical solution, when the connecting roller rotates, it can drive the first transmission gear to rotate, thereby driving the entire transmission component to operate.

[0025] As a further improvement of the above solution, a transmission gear is fixed at one end of the second transmission gear. At the same time, a rotating shaft is arranged in the fan, and a rotating gear is fixed at one end of the rotating shaft. The sides of the rotating gear and the transmission gear are meshed with a transmission belt.

[0026] Through the above technical solution, the second transmission gear drives the transmission gear to rotate. Through the meshing force of the transmission gear and the rotating gear with the transmission belt, the transmission belt drives the rotating gear to rotate at the same time, so that the rotating shaft drives the connected fan blades (not marked here) to rotate, so that the fan operates briefly for a moment, generates wind flow, and blows the harmful gases generated by arc extinguishing toward the adsorption device.

[0027] As a further improvement of the above solution, the adsorption member includes a protection box fixed on the second panel, and the protection box covers one side of the first arc extinguishing chamber.

[0028] Through the above technical solution, one side of the protection box is provided with an interface, and the interface covers one side of the first arc extinguishing chamber, so as to fully receive the blown harmful gas.

[0029] As a further improvement of the above solution, a mounting frame is fixed in the protection box, and an activated carbon adsorption panel is fixed in the mounting frame.

[0030] Through the above technical solution, an activated carbon adsorption panel with a length and width that matches each other is installed in the installation frame, and harmful gases are absorbed by the activated carbon built into the panel.

[0031] The activated carbon adsorption panel is a consumable material and needs to be replaced regularly.

[0032] As a further improvement of the above solution, a retaining screw is provided on the protective box, and one end of the retaining screw is threadedly connected to the second panel.

[0033] Through the above technical solution, the retaining screw is used to fix the position of the protection box to prevent the protection box from being separated from the second panel.

[0034] Compared with the prior art, the present invention provides an arc generation guiding arc extinguishing hood, which has the following beneficial effects:

[0035] 1. The arc-generating guided arc-extinguishing hood is provided with a first arc-extinguishing chamber and a second arc-extinguishing chamber. When the switch is closed, the first arc-extinguishing chamber is used to perform the first arc-extinguishing treatment on the arc, and at the same time, the regulating pressure plate presses the second copper connector, so that the second copper connector and the first copper connector guide the arc that has not been extinguished to the second arc-extinguishing chamber, and the second arc-extinguishing chamber is used to perform the secondary arc-extinguishing treatment, thereby effectively extinguishing the arc and improving the safety and stability of arc extinguishing.

[0036] 2. The arc-guided arc-extinguishing hood, when the gate is closed and the pressure plate is adjusted to press the second copper connector, drives the connecting roller to rotate at the same time, and the speed change part changes the speed of the rotational force generated, and the transmission toothed belt drives the shaft to rotate. The short-term rotational force generated makes the fan blades in the fan rotate, generating wind. The wind blows the harmful gas generated by the arc extinguishing to the adsorption part, so that the activated carbon adsorption panel adsorbs the harmful gas, thereby effectively reducing the pollution to the air. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall external structure of the device of the present invention;

[0038] Figure 2 It is a schematic diagram of the overall planar structure of the device of the present invention;

[0039] Figure 3 It is a schematic diagram of the overall structure of the switch structure and the fan of the present invention;

[0040] Figure 4 It is a schematic diagram of the overall structure of the switch structure of the present invention;

[0041] Figure 5 This is a schematic diagram of the overall structure of the adsorption member of the present invention;

[0042] Figure 6 It is a schematic diagram of the connection structure between the speed change member and the connecting roller of the present invention;

[0043] Figure 7 For the present invention Figure 3 Schematic diagram of the structure at point A in the middle.

[0044] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0045] 1. Protective shell;

[0046] 2. Switch structure; 201. First arc extinguishing chamber; 202. Clamp; 203. First copper connector; 204. Second arc extinguishing chamber; 205. Second copper connector; 206. Connecting roller; 207. Control rod; 2071. Positioning rod; 2072. Connecting rod; 2073. Connecting block; 208. Linking rod; 209. Switch; 210. First panel; 211. Second panel;

[0047] 3. Speed ​​change member; 301. Sleeve; 302. Connecting shaft; 303. First interlocking gear; 304. Second interlocking gear; 305. First transmission gear; 306. Second transmission gear; 307. Transmission gear; 308. Positioning screw;

[0048] 4. fan; 401. rotating shaft; 4011. rotating gear; 402. transmission belt;

[0049] 5. Adsorption component; 501. Protection box; 502. Installation frame; 503. Activated carbon adsorption panel; 504. Retention screw. DETAILED DESCRIPTION

[0050] 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.

[0051] Embodiment 1

[0052] See also Figure 1-Figure 7 As shown, an arc-generating guided arc-extinguishing cover proposed in this embodiment includes a protective shell 1, a switch structure 2, a speed change part 3, a fan 4 and an adsorption part 5. The switch structure 2 is installed in the protective shell 1, and the switch structure 2 includes a first arc-extinguishing chamber 201 fixed in the protective shell 1. A clamping plate 202 is arranged at the bottom of the first arc-extinguishing chamber 201, a first copper connector 203 is clamped in the clamping plate 202, and a second arc-extinguishing chamber 204 is fixed on the first copper connector 203. The first arc-extinguishing chamber 201 is used to perform a first arc-extinguishing treatment on the generated arc, and when the arc-extinguishing treatment is not completely achieved, a secondary arc-extinguishing treatment is performed through the second arc-extinguishing chamber 204.

[0053] The bottom of the first arc extinguishing chamber 201 is movably connected with a second copper connector 205, one end of the second copper connector 205 is fitted with the first copper connector 203, and the other end of the second copper connector 205 is at a set position and can be fitted with the second arc extinguishing chamber 204. When the first copper connector 203 and the second copper connector 205 are separated, the arc that has not been completely extinguished is guided into the second arc extinguishing chamber 204 for secondary arc extinguishing treatment.

[0054] Two regulating pressure rods 207 are also movably connected to the bottom of the first arc extinguishing chamber 201, one end of the two regulating pressure rods 207 is located between the first copper connector 203 and the second copper connector 205, and can simultaneously fit the first copper connector 203 and the second copper connector 205 at a set position. When closing the circuit breaker, the regulating pressure rod 207 is horizontal, and the top of the front end of the regulating pressure rod 207 fits on the first copper connector 203, and the bottom of the front end of the regulating pressure rod 207 fits on the top of the second copper connector 205. When opening the circuit breaker, the front end of the regulating pressure rod 207 presses the second copper connector 205 downward, so that the second copper connector 205 is separated from the first copper connector 203. At this time, the regulating pressure rod 207 does not contact the first copper connector 203.

[0055] The second copper connector 205 is L-shaped. When one end of the second copper connector 205 is pressed, the other end of the second copper connector 205 is attached to the second arc extinguishing chamber 204, thereby guiding the arc into the second arc extinguishing chamber 204 to complete the secondary arc extinguishing process.

[0056] The inner side surface opposite to the regulating pressure rod 207 is rotatably connected with a connecting rod 2072, a connecting block 2073 is fixed on the connecting rod 2072, a linkage rod 208 is fixed on the connecting block 2073, and a knife gate 209 is rotatably connected to one end of the linkage rod 208. By pushing and pulling the knife gate 209, the linkage rod 208 moves up and down to achieve the closing and opening effects of the regulating pressure rod 207. When closing and opening, the regulating pressure rod 207 rotates with the connecting rod 2072 as the axis.

[0057] A first panel 210 is fixed to one side of the first arc extinguishing chamber 201, and a second panel 211 is fixed to the other side. The first panel 210 is equipped with a fan 4 for blowing harmful gases generated when the switch is opened, and the second panel 211 is equipped with an adsorption member 5 for adsorbing harmful gases.

[0058] A connecting roller 206 is fixed to the side of the second copper connector 205 , and a speed changing member 3 for increasing the rotation speed of the fan blades of the fan 4 is movably connected to one end of the connecting roller 206 .

[0059] The working principle of the arc generation guiding arc extinguishing hood proposed in this embodiment is: when in use, by pulling the switch knife 209, the connecting rod 208 pulls the tail end of the regulating pressure rod 207, so that the front end of the regulating pressure rod 207 presses one end of the second copper connector 205 downward, and the second copper connector 205 rotates with the connecting roller 206 as the axis. At this time, the other end of the regulating pressure rod 207 is attached to the side of the second arc extinguishing chamber 204, so that the unextinguished arc is guided into the second arc extinguishing chamber 204 for secondary arc extinguishing treatment.

[0060] Furthermore, opposite outer sides of the two regulating pressure rods 207 are rotatably connected with positioning rods 2071 , and one end of the positioning rod 2071 is rotatably connected to a corresponding position in the protective shell 1 .

[0061] More specifically, when closing and opening the switch, the push-pull force generated by the knife 209 causes the regulating pressure rod 207 to rotate around the positioning rod 2071 as the axis, thereby improving the stability of closing and opening the switch.

[0062] Embodiment 2

[0063] See also Figure 1-Figure 7As shown, the arc generation guiding arc extinguishing cover mentioned in this embodiment, on the basis of embodiment one, this embodiment also includes that the speed change part 3 includes a sleeve 301 fixed in the protective shell 1, and the first connecting gear 303, the second connecting gear 304, the first transmission gear 305 and the second transmission gear 306 are movably connected in the sleeve 301, the first transmission gear 305 is meshed with the first connecting gear 303, and the second transmission gear 306 is meshed with the second connecting gear 304.

[0064] More specifically, the tooth profile diameter of the first connecting gear 303 and the first transmission gear 305 is different from the tooth profile of the second connecting gear 304 and the second transmission gear 306, so that the rotational force generated by the meshing rotation of the first connecting gear 303 and the first transmission gear 305 is smaller than the rotational force generated by the meshing rotation of the second connecting gear 304 and the second transmission gear 306. Therefore, when the first connecting gear 303 rotates and is transmitted to the second transmission gear 306, a speed change effect is achieved, so that the rotation speed of the second transmission gear 306 becomes larger.

[0065] Furthermore, a connecting shaft 302 is fixed between the first interlocking gear 303 and the second interlocking gear 304 .

[0066] More specifically, when the first linkage gear 303 rotates, the second linkage gear 304 can be driven to rotate synchronously via the connecting shaft 302 .

[0067] Furthermore, a positioning screw 308 is provided on the side of the sleeve 301 , and one end of the positioning screw 308 is threadedly connected in the protective shell 1 .

[0068] More specifically, the positioning screw 308 is used to fix the position of the sleeve 301 to avoid shaking and causing the internal gears to be disengaged.

[0069] Further, one end of the first transmission gear 305 is fixed to one end of the connecting roller 206 .

[0070] More specifically, when the connecting roller 206 rotates, it can drive the first transmission gear 305 to rotate, thereby driving the entire transmission component 3 to operate.

[0071] Furthermore, a transmission gear 307 is fixed to one end of the second transmission gear 306 , and a rotating shaft 401 is provided in the fan 4 , a rotating gear 4011 is fixed to one end of the rotating shaft 401 , and a transmission toothed belt 402 is meshed between the rotating gear 4011 and the side of the transmission gear 307 .

[0072] More specifically, the second transmission gear 306 drives the transmission gear 307 to rotate. Through the meshing force of the transmission gear 307 and the rotating gear 4011 and the transmission belt 402, the transmission belt 402 drives the rotating gear 4011 to rotate at the same time, so that the rotating shaft 401 drives the connected fan blades (not marked here) to rotate, so that the fan operates briefly for a moment, generates wind flow, and blows the harmful gases generated by arc extinguishing toward the adsorption component 5.

[0073] Furthermore, the adsorption member 5 includes a protection box 501 fixed on the second panel 211 , and the protection box 501 covers one side of the first arc extinguishing chamber 201 .

[0074] More specifically, one side of the protection box 501 has an interface, and the interface covers one side of the first arc extinguishing chamber 201, so as to fully receive the blown harmful gas.

[0075] Furthermore, a mounting frame 502 is fixed inside the protection box 501 , and an activated carbon adsorption panel 503 is fixed inside the mounting frame 502 .

[0076] More specifically, an activated carbon adsorption panel 503 with a length and width that matches each other is installed in the installation frame 502, and harmful gases are absorbed by the activated carbon built into the panel.

[0077] The activated carbon adsorption panel 503 is a consumable material and needs to be replaced regularly.

[0078] Furthermore, a retaining screw 504 is provided on the protection box 501 , and one end of the retaining screw 504 is threadedly connected to the second panel 211 .

[0079] More specifically, the retaining screw 504 is used to fix the position of the protection box 501 to prevent the protection box 501 from being separated from the second panel 211 .

[0080] 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. An arc-generating guided arc-extinguishing cover, comprising a protective shell (1), a switch structure (2), a speed change component (3), a fan (4) and an adsorption component (5), characterized in that: A switch structure (2) is installed in the protective shell (1), the switch structure (2) comprising a first arc extinguishing chamber (201) fixed in the protective shell (1), a clamping plate (202) is arranged at the bottom of the first arc extinguishing chamber (201), a first copper connector (203) is clamped in the clamping plate (202), and a second arc extinguishing chamber (204) is fixed on the first copper connector (203); The bottom of the first arc extinguishing chamber (201) is movably connected to a second copper connector (205), one end of the second copper connector (205) is fitted with the first copper connector (203), and the other end of the second copper connector (205) is in a set position and can be fitted with the second arc extinguishing chamber (204); The bottom of the first arc extinguishing chamber (201) is also movably connected to two regulating pressure rods (207), one end of the two regulating pressure rods (207) is located between the first copper connector (203) and the second copper connector (205), and can simultaneously fit the first copper connector (203) and the second copper connector (205) at a set position; The inner side surface opposite to the regulating pressure rod (207) is rotatably connected to a connecting rod (2072), a connecting block (2073) is fixed on the connecting rod (2072), a linkage rod (208) is fixed on the connecting block (2073), and a switch (209) is rotatably connected to one end of the linkage rod (208); A first panel (210) is fixed on one side of the first arc extinguishing chamber (201), and a second panel (211) is fixed on the other side; a fan (4) for blowing harmful gas generated when the switch is opened is installed on the first panel (210), and an adsorption member (5) for adsorbing harmful gas is installed on the second panel (211); A connecting roller (206) is fixed to the side of the second copper connector (205), and a speed change component (3) for increasing the rotation speed of the fan blades of the fan (4) is movably connected to one end of the connecting roller (206).

2. The arc generation and guiding arc extinguishing hood according to claim 1, characterized in that: The opposite outer side surfaces of the two regulating pressure rods (207) are rotatably connected to positioning rods (2071), and one end of the positioning rod (2071) is rotatably connected to a corresponding position in the protective shell (1).

3. The arc generation and guiding arc extinguishing hood according to claim 1, characterized in that: The speed change member (3) comprises a sleeve (301) fixed in the protective shell (1), a first connecting gear (303), a second connecting gear (304), a first transmission gear (305) and a second transmission gear (306) being movably connected in the sleeve (301), the first transmission gear (305) being meshed with the first connecting gear (303), and the second transmission gear (306) being meshed with the second connecting gear (304).

4. The arc generation and guiding arc extinguishing hood according to claim 3, characterized in that: A connecting shaft (302) is fixed between the first interlocking gear (303) and the second interlocking gear (304).

5. The arc generation and guiding arc extinguishing hood according to claim 3, characterized in that: A positioning screw (308) is provided on the side of the sleeve (301), and one end of the positioning screw (308) is threadedly connected in the protective shell (1).

6. The arc generation and guiding arc extinguishing hood according to claim 3, characterized in that: One end of the first transmission gear (305) is fixed to one end of the connecting roller (206).

7. The arc generation and guiding arc extinguishing hood according to claim 3, characterized in that: A transmission gear (307) is fixed to one end of the second transmission gear (306), and a rotating shaft (401) is provided inside the fan (4), a rotating gear (4011) is fixed to one end of the rotating shaft (401), and a transmission toothed belt (402) is meshed between the sides of the rotating gear (4011) and the transmission gear (307).

8. The arc generation and guiding arc extinguishing hood according to claim 7, characterized in that: The adsorption member (5) comprises a protection box (501) fixed on the second panel (211), and the protection box (501) covers one side of the first arc extinguishing chamber (201).

9. The arc generation and guiding arc extinguishing hood according to claim 8, characterized in that: A mounting frame (502) is fixed inside the protection box (501), and an activated carbon adsorption panel (503) is fixed inside the mounting frame (502).

10. The arc generation and guiding arc extinguishing hood according to claim 9, characterized in that: The protection box (501) is provided with a retaining screw (504), and one end of the retaining screw (504) is threadedly connected to the second panel (211).

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