Multipurpose explosion-proof control box

Abstract

The invention relates to the technical field of explosion-proof control boxes, in particular to a multipurpose explosion-proof control box which comprises a box body and a box door, an electrical cavity is formed in the box body, an access hole communicated with the electrical cavity is formed in the front end face of the box body, and the box door is installed on the access hole; a pressure relief opening communicated with the electric cavity is formed in the upper end face of the box body, the coaming is installed on the pressure relief opening of the box body in a surrounding mode, the buffer bag is cylindrical and is made of flexible sealing refractory materials, the lower end of the buffer bag is connected with the inner wall of the coaming in a sealed mode, and the buffer bag is folded and stored in the coaming. The upper end of the buffer bag is connected with the lower end face of the top cover, and the top cover covers the upper port of the coaming; explosion pressure is guided and absorbed by increasing the effective volume, smoke is collected, and safety is improved.

Description

Technical Field

[0001] The invention relates to the technical field of explosion-proof control boxes, in particular to a multi-purpose explosion-proof control box. Background Art

[0002] As a common power distribution equipment, explosion-proof control box is widely used in petrochemical, mining, pharmaceutical and other fields. Explosion-proof control box generally adopts a special sealing structure to prevent the arc, spark or heat source inside the electrical equipment from igniting the surrounding flammable and explosive materials such as oil, gas, dust, etc., thereby causing an explosion, or using its own special explosion-proof structure and materials to limit the explosion range to the inside of the box after the explosion occurs, so as to prevent the spark from spreading to the external environment and causing a greater safety accident.

[0003] A Chinese invention patent application with prior art publication number CN116667189A proposes a modular explosion-proof control box, which includes a box body and a box cover. Two slide rails symmetrical along an axis are arranged at the bottom of the box body, and a connecting mechanism is provided on each slide rail, and the connecting mechanism can be freely installed on the slide rail or removed from the slide rail. The connecting mechanisms on both sides are jointly and detachably installed with mounting rails, and various electrical components are clamped on the mounting rails. The connecting mechanism can move up and down along the slide rails to change the relative position of the mounting rails in the box body. While driving the mounting rails to move up and down, the connecting mechanism can also move the movable wiring groove slidably installed on the side wall of the box body to a position convenient for wiring through a bridging rod installed on its side; thereby, it is possible to freely add or reduce installation modules and change their relative positions, which is convenient for adjustment and maintenance.

[0004] However, the box body of the above-mentioned explosion-proof control box is an integral structure like a traditional box body. Due to the limited internal space of the box body, the pressure cannot be well guided or released after the box body explodes, resulting in spark diffusion and even box body rupture, so improvement is needed. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a multi-purpose explosion-proof control box which guides and absorbs explosion pressure and collects smoke by increasing the effective volume to improve safety.

[0006] A multi-purpose explosion-proof control box of the present invention comprises a box body and a box door, wherein an electrical chamber is arranged inside the box body, an inspection port connected to the electrical chamber is arranged on the front end surface of the box body, and the box door is installed on the inspection port; the box also comprises a panel, a buffer bag and a top cover, wherein the upper end surface of the box body is provided with a pressure relief port connected to the electrical chamber, the panel is installed around the pressure relief port of the box body, the buffer bag is cylindrical, the buffer bag adopts a flexible sealing refractory material, the lower end of the buffer bag is sealed and connected to the inner wall of the panel, the buffer bag is folded and stored in the panel, the upper end of the buffer bag is connected to the lower end surface of the top cover, and the top cover is placed on the upper end of the panel; the electrical chamber of the box body is provided with a pressure relief port connected to the electrical chamber, the panel is installed around the pressure relief port of the box body, the buffer bag is cylindrical, the buffer bag adopts a flexible sealing refractory material, the lower end of the buffer bag is sealed and connected to the inner wall of the panel, the buffer bag is folded and stored in the panel, the upper end of the buffer bag is connected to the lower end surface of the top cover, and the top cover is placed on the upper end of the panel; The main control unit and multiple electrical control units are installed. Under normal conditions, the buffer bag is folded and stored in the enclosure, and the top cover is covered on the upper port of the enclosure, so that the height will not be increased much. When an explosion occurs in the electrical chamber of the box, the explosion pressure rushes into the buffer bag through the pressure relief port of the box, so that the buffer bag expands and stretches upward, and lifts the top cover from the enclosure, thereby increasing the effective volume of the electrical chamber of the box. The increased volume can guide and absorb the explosion pressure, so that the pressure and smoke generated by the explosion are collected in the electrical chamber and buffer bag of the box, avoiding the spread of sparks to the external environment or even the rupture of the box, thereby improving safety.

[0007] Preferably, it also includes a middle mounting frame, a side mounting frame, a pressure relief plate 1 and a pressure relief plate 2, the middle mounting frame is installed in the middle of the pressure relief port of the box, two side mounting frames are provided, and the two side mounting frames are installed on both sides of the pressure relief port of the box, the lower end surfaces of the middle mounting frame and the side mounting frame are inclined, the pressure relief plate 1 is hinged on the middle mounting frame, and the pressure relief plate 2 is hinged on the side mounting frame, and the pressure relief plate 1 and the pressure relief plate 2 are laid flat to close the pressure relief port of the box; in a normal state, the pressure relief plate 1 and the pressure relief plate 2 cooperate to close the pressure relief port of the box, reduce the contact of the buffer bag with the air and the ozone and other gases in the electrical chamber of the box, thereby delaying oxidation and increasing the service life of the buffer bag, and when an explosion occurs in the electrical chamber of the box, the pressure and smoke will flush the pressure relief plate 1 and the pressure relief plate 2 open, so that the pressure relief port is opened, which will not affect the pressure relief effect.

[0008] Preferably, it also includes multiple insertion tubes, multiple tips, multiple sockets and multiple fragile tubes. Multiple insertion tubes are installed on the lower end faces of the middle mounting frame and the side mounting frame. Tips are arranged on the upper sides of the outer ends of the multiple insertion tubes. Multiple sockets are installed on the lower end faces of the pressure relief plate 1 and the pressure relief plate 2. The multiple sockets and the multiple insertion tubes are aligned respectively. The two ends of the multiple fragile tubes are respectively inserted in the multiple sockets and the multiple insertion tubes that are aligned respectively. Fire extinguishing agents are stored in the multiple fragile tubes. The fire extinguishing agents stored in the fragile tubes include dry ice, dry powder fire extinguishing agents and oxygen-consuming powder. When the pressure relief plate 1 and the pressure relief plate 2 close the pressure relief port of the box body, the two ends of the multiple fragile tubes are respectively inserted in the multiple sockets. In the plurality of plug-in tubes and the plurality of sockets, the plurality of fragile tubes are arranged on the pressure-applied surface of the pressure relief port. When an explosion occurs in the electrical chamber of the box body, the pressure relief plate 1 and the pressure relief plate 2 drive the plurality of sockets to flip and open upward, while the plurality of plug-in tubes remain stable, thereby breaking the plurality of fragile tubes. In the process of breaking the plurality of fragile tubes, the plurality of pointed ends pierce the upper walls of the plurality of fragile tubes respectively, thereby making the rupture effect of the plurality of fragile tubes better. After the plurality of fragile tubes are ruptured, the fire extinguishing agent therein is sprayed downward at the fracture into the electrical chamber of the box body to extinguish the explosion and combustion parts. The sublimation of dry ice can cool the electrical chamber of the box body, avoid secondary explosion, and improve safety.

[0009] Preferably, it also includes an annular groove, and an annular groove is arranged on the outer walls of multiple fragile tubes. When the fragile tube is inserted into the insertion tube and the socket, the annular groove is located below the tip; by setting the annular groove, the fragile tube breaks at the annular groove, thereby improving the fracture reliability of the fragile tube.

[0010] Preferably, it also includes a bracket, a telescopic rod, a spring 1, a support plate, a wedge block, a hook plate, a spring piece, a piston and a pressure relief pipe, the upper end of the bracket is installed on the lower end surface of the top cover, the lower end of the telescopic rod is connected to the bracket, the upper end of the telescopic rod is installed with the support plate, the lower end of the spring 1 is connected to the bracket, the upper end of the spring 1 is connected to the support plate, a wedge block is arranged on the side wall of the support plate, the hook plate is elastically arranged on the bracket, a hook matching the wedge block is arranged on the upper end of the hook plate, the spring piece is a heat-sensitive metal piece, the spring piece is disc-shaped at room temperature, and is bowl-shaped when heated, the bottom of the spring piece is connected to the support plate, the upper edge of the spring piece is connected to the lower end of the piston, the pressure relief pipe is installed on the top cover through, the piston is aligned with the lower end of the pressure relief pipe, and the piston seals the pressure relief pipe; in normal state, the elastic force of the spring 1 extends the telescopic rod to push The support plate, shrapnel and piston rise, so that the piston presses the lower end surface of the pressure relief pipe to seal it. The shrapnel is in the shape of a flat disk, and the wedge block is located above the hook of the hook plate. When the hot smoke from the explosion contacts the shrapnel, the shrapnel expands due to the heat and bulges downward, making the shrapnel into a raised bowl shape. The shrapnel pushes the support plate and the wedge block downward, so that the wedge block is hooked by the hook of the hook plate. When the explosion and fire inside the electrical chamber of the box are extinguished, the temperature drops, and the shrapnel shrinks from a bowl shape to a disk shape, thereby driving the piston to descend, and the piston is separated from the pressure relief pipe, so that the pressure relief pipe is opened, and the low-temperature gas stored in the buffer bag is discharged through the pressure relief pipe, the top cover and the buffer bag fall back, and the internal and external pressures of the box are balanced. At this time, the box door can be opened to inspect the inside of the box, realizing automatic pressure relief, which is practical.

[0011] Preferably, it also includes channel steel, multiple sensor units and multiple temperature sensors, at least two channel steels are arranged, the channel steels are installed on the top of the box, the multiple sensor units are installed on the channel steel, the multiple sensor units are evenly arranged around the box, multiple temperature sensors are installed on the multiple sensor units, and the multiple temperature sensors face different angles of the box respectively; the multiple temperature sensors detect abnormally high temperature and fire conditions in the environment around the box, when there is abnormally high temperature or a fire chamber in the environment, the multiple temperature sensors will generate detection signals of different intensities due to their different directions, among which the temperature sensor that generates the strongest detection signal A points to the approximate direction of the abnormally high temperature or fire, and the other multiple temperature sensors that point similarly to the temperature sensor that generates the strongest detection signal A generate second strongest detection signals B, C, D..., calculate the ratios of the signal strengths of the multiple second strongest detection signals to the signal strength of the strongest detection signal B / A, C / A, D / A..., and virtualize the abnormally high temperature or fire heat source as a point P, and P is closer to the temperature sensor that generates the strongest detection signal A. The line connecting the temperature sensors is the thermal radiation line PA, and the line connecting P and the multiple temperature sensors that generate the second strongest detection signals is the thermal radiation line PB, PC, PD..., and the angles between PB, PC, PD... and the perpendicular lines to the receiving surfaces of the multiple temperature sensors are set to ∠b, ∠c, ∠d..., then the above ratios B / A, C / A, D / A... are approximately cosine (b), cosine (c), cosine (d)... According to the inverse trigonometric function, the above ratios ∠b, ∠c, The values ​​of ∠d..., and the relative positions and angles of the above-mentioned multiple temperature sensors and the box are known, and the values ​​of the angles ∠ab, ∠ac, ∠ad... between the directions of the temperature sensor that generates the strongest detection signal A and the temperature sensors that generate the second strongest detection signals B, C, D... are also known. Therefore, the approximate position of point P is determined in reverse according to the values ​​of ∠b, ∠c, ∠d... The more signals involved in the detection, the more accurate the position of point P, thereby realizing the positioning of abnormally high temperature and fire in the environment.

[0012] Preferably, it also includes a swing arm, a shaft, a gear one, a motor one, a gear two and a gas storage unit, a launch tube is movably arranged on the swing arm, a hinged end of the swing arm is rotatably connected to the shaft, the shaft is installed in a groove of the channel steel, a gear one is concentrically installed on the shaft, the motor one is installed on the swing arm, a gear two is concentrically installed on the output shaft of the motor one, the gear two is meshed with the gear one, the gas storage unit is installed on the swing arm, a gas storage bottle and a gas transmission pipeline are arranged on the gas storage unit, and the output end of the gas transmission pipeline of the gas storage unit is connected with the launch tube of the swing arm; the gas storage bottle stores high-pressure carbon dioxide gas or high-pressure nitrogen flame-retardant high-pressure gas, and the launch tube of the swing arm stores fire extinguishing agent, after a plurality of temperature sensors cooperate to determine the abnormally high temperature and the fire position, the motor one drives the gear two to rotate, and the reaction force of the gear two meshing the shaft drives the swing arm to rotate around the shaft, so that the launch tube of the swing arm faces the direction of the abnormally high temperature and the fire, the gas transmission pipeline of the gas storage unit is opened to spray the high-pressure gas into the launch tube of the swing arm, and the fire extinguishing agent is sprayed to the target area, so as to put out the primary fire and improve safety.

[0013] Preferably, it also includes multiple storage barrels one and multiple storage barrels two, the multiple storage barrels one and storage barrels two are loaded in the launching tube of the swing arm, the multiple storage barrels one store fire extinguishing agent, the multiple storage barrels two store emergency escape equipment, the storage barrels one and storage barrels two are hot-melt materials; the multiple storage barrels one and the multiple storage barrels two are sprayed into the abnormally high temperature and fire area, the multiple storage barrels one are melted by heat to make the internal fire extinguishing agent splash out to extinguish the fire, the multiple storage barrels two are melted by heat to release the emergency escape equipment such as thermal insulation blankets and emergency masks therein, and the staff working in the fire area have a higher chance of escape after obtaining these emergency escape equipment.

[0014] Preferably, it also includes a bottom plate, a magnetic block, a power connection module, a sensor 1, a wire slot, an expansion module, a magnetic seat and a sensor 2. The bottom plate is installed on the side wall of the box, and multiple magnetic blocks and a power connection module are installed on the bottom plate. The sensor 1 and the wire slot are arranged on the power connection module, and multiple wiring terminals are installed at the bottom of the wire slot. Multiple magnetic seats, sensor 2 and a wire plug module are arranged on the side wall of the expansion module. The multiple magnetic seats are matched with multiple magnetic blocks, sensor 2 is matched with sensor 1, and the wire plug module is matched with the wire slot. The wire plug terminals matching the multiple wiring terminals are arranged in the wire plug module. Different functional units are built into the expansion module according to actual needs. When the function of the box needs to be expanded, the multiple magnetic seats of the expansion module are respectively plugged into the multiple magnetic blocks and magnetically fixed. At this time, the wire plug module is inserted into the wire slot, so that the multiple wire plug terminals are electrically connected to the multiple wiring terminals. At the same time, sensor 2 is matched with sensor 1 to apply electronic tags or NFC (Near Field Communication). FieldCommunication short-range wireless communication technology) and other technologies are used to identify the identity information. The main control unit in the box determines whether to accept the expansion of the expansion module based on the identity information. When the identity information is matched and confirmed, the functional unit of the expansion module is connected to the main control unit of the box, thereby temporarily expanding the function of the main control unit in the box without opening the box door, which is more flexible and convenient.

[0015] Preferably, it also includes a partition, a second spring and a positioning rod, a transverse slot is set in the middle of the wiring slot, the inner end of the partition is slidably inserted in the transverse slot of the wiring slot, the outer end of the partition extends out of the outside of the power connection module, the two ends of the second spring are respectively connected to the partition and the power connection module, the outer end of the partition is provided with a positioning hole, the positioning rod is installed on the expansion module, and the positioning rod matches the positioning hole of the partition; the elastic force of the second spring pushes the partition toward the inside of the wiring slot, so that the partition closes the wiring slot to prevent the wiring terminals in the wiring slot from generating sparks to the outside, and when installing the expansion module, the plug The wire module is inserted into the wire socket and against the partition. When the partition is pulled outward into place, the adsorption force of multiple magnetic blocks and multiple magnetic seats will automatically install the expansion module into place. At this time, the wire terminals of the wire socket module are plugged into the wiring terminals of the wire socket. At the same time, the positioning rod is inserted into the positioning hole of the partition to position the partition. The partition is released to complete the expansion installation of the expansion module. When the expansion module is removed, the positioning rod is taken out of the positioning hole of the partition, and the elastic force of spring 2 pushes the partition inward to reset it, so that the multiple wiring terminals of the wire socket are not exposed throughout the process, thereby improving safety.

[0016] Compared with the prior art, the present invention has the following beneficial effects: a main control unit and a plurality of electrical control units are installed in the electrical chamber of the box body; under normal conditions, the buffer bag is folded and stored in the enclosure, and the top cover is covered on the upper port of the enclosure, so that the height will not be increased much; when an explosion occurs in the electrical chamber of the box body, the explosion pressure rushes into the buffer bag through the pressure relief port of the box body, so that the buffer bag expands and stretches upward, and lifts the top cover from the enclosure, thereby increasing the effective volume of the electrical chamber of the box body; the increased volume can guide and absorb the explosion pressure, so that the pressure, smoke, etc. generated by the explosion are collected in the electrical chamber and the buffer bag of the box body, thereby preventing sparks from spreading to the external environment or even the box body from rupturing, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is an axonometric schematic diagram of the present invention; Figure 3 This is a front cross-sectional structural schematic diagram of the present invention in a normal state; Figure 4 It is a front cross-sectional structural schematic diagram of the present invention in an exploded state; Figure 5 It is a schematic diagram of the disassembled structure of the pressure relief plate 1, the pressure relief plate 2, the plug-in tube, the socket and the fragile tube; Figure 6 It is a schematic diagram of the disassembled structure of the bracket, telescopic rod, spring 1, support plate, shrapnel, piston and pressure relief pipe; Figure 7 yes Figure 3 A schematic diagram of the local enlarged structure at point A in the middle; Figure 8 yes Figure 4 A partial enlarged schematic diagram of point B in the middle; Fig. 9 It is a structural schematic diagram of a sensor unit, a temperature sensor, a swing arm, a shaft rod, a motor 1, a gas storage unit, a storage bucket 1 and a storage bucket 2; Fig.10 It is a schematic diagram of the disassembled structure of the bottom plate, magnetic block, power connection module, sensor 1, expansion module, magnetic seat, sensor 2, wiring module, partition and other structures.

[0018] Markings in the attached drawings: 1, box body; 2, box door; 3, enclosure; 4, buffer bag; 5, top cover; 6, middle mounting frame; 7, side mounting frame; 8, pressure relief plate 1; 9, pressure relief plate 2; 10, plug-in tube; 11, tip; 12, socket; 13, fragile tube; 14, annular groove; 15, bracket; 16, telescopic rod; 17, spring 1; 18, bracket; 19, wedge block; 20, hook plate; 21, spring; 22, piston; 23, pressure relief pipe; 24, channel steel; 25 , sensor unit; 26, temperature sensor; 27, swing arm; 28, shaft; 29, gear one; 30, motor one; 31, gear two; 32, gas storage unit; 33, storage bucket one; 34, storage bucket two; 35, bottom plate; 36, magnetic block; 37, power connection module; 38, sensor one; 39, wiring slot; 40, expansion module; 41, magnetic seat; 42, sensor two; 43, wiring module; 44, partition; 45, spring two; 46, positioning rod. DETAILED DESCRIPTION

[0019] In order to facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0020] Embodiment 1, as Figures 1 to 8As shown, a multi-purpose explosion-proof control box includes a box body 1 and a box door 2. An electrical chamber is arranged inside the box body 1. The front end face of the box body 1 is provided with an inspection port connected to the electrical chamber, and the box door 2 is installed on the inspection port; it also includes a panel 3, a buffer bag 4 and a top cover 5. The upper end face of the box body 1 is provided with a pressure relief port connected to the electrical chamber. The panel 3 is installed around the pressure relief port of the box body 1. The buffer bag 4 is cylindrical. The buffer bag 4 is made of flexible sealing refractory material. The lower end of the buffer bag 4 is sealed and connected to the inner wall of the panel 3. The buffer bag 4 is folded and stored in the panel 3. The upper end of the buffer bag 4 is connected to the lower end face of the top cover 5, and the top cover 5 is placed on the upper end of the panel 3; it also includes a middle mounting frame 6, a side mounting frame 7, a pressure relief plate 8 and a pressure relief plate 9. The middle mounting frame 6 is installed in the middle of the pressure relief port of the box body 1, two side mounting frames 7 are set, and the two side mounting frames 7 are installed on both sides of the pressure relief port of the box body 1. The lower end faces of the middle mounting frame 6 and the side mounting frame 7 are both inclined, and the pressure relief plate 1 8 is hinged on the middle mounting frame 6, and the pressure relief plate 2 9 is hinged on the side mounting frame 7. After the pressure relief plate 1 8 and the pressure relief plate 2 9 are laid flat, the pressure relief port of the box body 1 is closed; it also includes multiple plug-in tubes 10, multiple tips 11, multiple sockets 12 and multiple fragile tubes 13, the lower end faces of the middle mounting frame 6 and the side mounting frame 7 are both installed with multiple plug-in tubes 10, and the upper sides of the outer ends of the multiple plug-in tubes 10 are all provided with tips 11, and the lower end faces of the pressure relief plate 1 8 and the pressure relief plate 2 9 are both installed with multiple sockets 12, and the multiple sockets 12 and the multiple plug-in tubes 10 are aligned respectively, Both ends of the multiple fragile tubes 13 are respectively inserted into the multiple aligned sockets 12 and the multiple insertion tubes 10, and the multiple fragile tubes 13 store fire extinguishing agent; they also include an annular groove 14, and the outer walls of the multiple fragile tubes 13 are all annularly arranged with the annular groove 14. When the fragile tubes 13 are inserted into the insertion tubes 10 and the sockets 12, the annular groove 14 is located below the tip 11.

[0021] A main control unit and multiple electrical control units are installed in the electrical chamber of the box body 1. Under normal conditions, the buffer bag 4 is folded and stored in the enclosure 3, and the top cover 5 covers the upper port of the enclosure 3, so that the height will not be increased much. The pressure relief plate 1 8 and the pressure relief plate 2 9 cooperate to close the pressure relief port of the box body 1, reduce the contact of the buffer bag 4 with the air and the gas such as ozone in the electrical chamber of the box body 1, thereby delaying oxidation and increasing the service life of the buffer bag 4. The fire extinguishing agent stored in the fragile tube 13, such as dry ice, dry powder fire extinguishing agent and oxygen-consuming powder, when the pressure relief plate 1 8 and the pressure relief plate 2 9 close the pressure relief port of the box body 1, the two ends of the multiple fragile tubes 13 are respectively inserted into the multiple insertion tubes 10 and the multiple sockets 12, so that the multiple fragile tubes 13 are arranged on the pressure-suppressing surface of the pressure relief port; when an explosion occurs in the electrical chamber of the box body 1, The pressure and smoke will push open the pressure relief plate 1 8 and the pressure relief plate 2 9, so that the pressure relief port is opened, which will not affect the pressure relief effect. The pressure relief plate 1 8 and the pressure relief plate 2 9 drive the multiple sockets 12 to flip upward and open, while the multiple plug-in tubes 10 remain stable, thereby breaking the multiple fragile tubes 13. In the process of breaking the multiple fragile tubes 13, the multiple tips 11 respectively pierce the upper walls of the multiple fragile tubes 13, so that the multiple fragile tubes 13 can be broken with better effect. After the multiple fragile tubes 13 are broken, the fire extinguishing agent therein is sprayed downward at the fracture into the electrical chamber of the box body 1 to extinguish the explosion and combustion parts. The sublimation of dry ice can cool the electrical chamber of the box body 1 to avoid secondary explosion and improve safety. By setting the annular groove 14, the fragile tube 13 is broken at the annular groove 14, thereby improving the fracture reliability of the fragile tube 13.

[0022] It also includes a bracket 15, a telescopic rod 16, a spring 17, a support plate 18, a wedge block 19, a hook plate 20, a spring 21, a piston 22 and a pressure relief pipe 23. The upper end of the bracket 15 is installed on the lower end surface of the top cover 5, the lower end of the telescopic rod 16 is connected to the bracket 15, the upper end of the telescopic rod 16 is installed with the support plate 18, the lower end of the spring 17 is connected to the bracket 15, the upper end of the spring 17 is connected to the support plate 18, and the wedge block 19 is arranged on the side wall of the support plate 18. The hook plate 20 is elastically mounted on the bracket 15, and a hook matching the wedge block 19 is arranged at the upper end of the hook plate 20. The spring piece 21 is a heat-sensitive metal sheet. The spring piece 21 is disc-shaped at room temperature and bowl-shaped when heated. The bottom of the spring piece 21 is connected to the bracket 18, and the upper edge of the spring piece 21 is connected to the lower end of the piston 22. The pressure relief pipe 23 is installed on the top cover 5, and the piston 22 is aligned with the lower end of the pressure relief pipe 23, and the piston 22 seals the pressure relief pipe 23.

[0023] In the normal state, the elastic force of the spring 17 extends the telescopic rod 16, pushes the support plate 18, the spring piece 21 and the piston 22 to rise, so that the piston 22 presses the lower end surface of the pressure relief pipe 23 to seal, the spring piece 21 is in the shape of a flat disk, and the wedge block 19 is located above the hook of the hook plate 20. When the hot smoke of the explosion contacts the spring piece 21, the spring piece 21 expands due to the heat and bulges downward, making the spring piece 21 into a convex bowl shape, and the spring piece 21 pushes the support plate 18 and the wedge block 19 downward, so that The wedge block 19 is hooked by the hook of the hook plate 20. When the explosion and fire inside the electrical chamber of the box body 1 are extinguished, the temperature drops, and the shrapnel 21 shrinks from a bowl shape to a disc shape, thereby driving the piston 22 to descend. The piston 22 is separated from the pressure relief pipe 23, so that the pressure relief pipe 23 is opened, and the low-temperature gas stored in the buffer bag 4 is discharged through the pressure relief pipe 23. The top cover 5 and the buffer bag 4 fall back, and the internal and external pressures of the box body 1 are balanced. At this time, the box door 2 can be opened to inspect the inside of the box body 1.

[0024] Embodiment 2, as Figure 1 , Figure 2 and Fig. 9 As shown, on the basis of Example 1, it also includes a channel steel 24, a plurality of sensor units 25 and a plurality of temperature sensors 26. At least two channel steels 24 are provided, the channel steel 24 is installed on the top of the box body 1, and the plurality of sensor units 25 are installed on the channel steel 24. The plurality of sensor units 25 are evenly arranged around the box body 1, and a plurality of temperature sensors 26 are installed on the plurality of sensor units 25, and the plurality of temperature sensors 26 are respectively facing different angles of the box body 1.

[0025] A plurality of temperature sensors 26 detect abnormally high temperatures and fire conditions in the environment surrounding the box 1. When there is abnormally high temperature or a fire chamber in the environment, the plurality of temperature sensors 26 will generate detection signals of different strengths due to different directions. The temperature sensor 26 that generates the strongest detection signal A points to the approximate direction of the abnormally high temperature or fire, and the other plurality of temperature sensors 26 that point in a similar direction to the temperature sensor 26 that generates the strongest detection signal A generate second strongest detection signals B, C, D, ..., and calculate the ratios of the signal strengths of the plurality of second strongest detection signals to the signal strength of the strongest detection signal B / A, C / A, D / A, ..., and the abnormally high temperature or fire heat source is virtualized as a point P, and the line connecting P and the temperature sensor 26 that generates the strongest detection signal A is the heat radiation line PA, and the lines connecting P and the plurality of temperature sensors 26 that generate the second strongest detection signals are the heat radiation lines PB, PC, PD, ... , the angles between PB, PC, PD... and the perpendiculars to the receiving surfaces of the multiple temperature sensors 26 are set to ∠b, ∠c, ∠d..., then the above ratios B / A, C / A, D / A... are approximately cosine(b), cosine(c), cosine(d)... According to the inverse trigonometric function, the values ​​of the above ∠b, ∠c, ∠d... can be obtained, and the relative positions and angles of the above multiple temperature sensors 26 and the cabinet 1 are known, and the values ​​of the angles ∠ab, ∠ac, ∠ad... between the directions of the temperature sensor that generates the strongest detection signal A and the temperature sensors that generate the second strongest detection signals B, C, D... are also known, so that the approximate position of point P is determined in reverse according to the values ​​of the above ∠b, ∠c, ∠d..., the more the number of signals involved in the detection, the more accurate the position of point P, thereby realizing the positioning of abnormally high temperature and fire in the environment.

[0026] It also includes a swing arm 27, a shaft 28, a gear 29, a motor 30, a gear 21 and a gas storage unit 32. A launching tube is arranged at the movable end of the swing arm 27. The hinged end of the swing arm 27 is rotatably connected to the shaft 28. The shaft 28 is installed in the groove of the channel steel 24. A gear 29 is concentrically installed on the shaft 28. The motor 30 is installed on the swing arm 27. A gear 21 is concentrically installed on the output shaft of the motor 30. The gear 21 is meshed with the gear 21. The gas storage unit 32 is installed on the swing arm 27. A gas storage bottle and a gas pipeline are arranged on the gas storage unit 32. The output end of the gas pipeline of the gas storage unit 32 is connected to the launching tube of the swing arm 27.

[0027] The gas cylinder of the gas storage unit 32 stores high-pressure carbon dioxide gas or high-pressure nitrogen flame-retardant high-pressure gas, and the fire extinguishing agent is stored in the launching tube of the swing arm 27. After multiple temperature sensors 26 cooperate to determine the abnormally high temperature and the fire location, the motor 1 30 drives the gear 2 31 to rotate, and the reaction force of the gear 2 31 engaging the shaft 28 drives the swing arm 27 to rotate around the shaft 28, so that the launching tube of the swing arm 27 is facing the direction of the abnormally high temperature and the fire. The gas supply pipeline of the gas storage unit 32 is opened to allow the high-pressure gas to be sprayed into the launching tube of the swing arm 27, and the fire extinguishing agent is sprayed to the target area to extinguish the primary fire and improve safety.

[0028] It also includes multiple storage barrels 1 33 and multiple storage barrels 2 34. The multiple storage barrels 1 33 and storage barrels 2 34 are loaded in the launching tube of the swing arm 27. The multiple storage barrels 1 33 store fire extinguishing agents, and the multiple storage barrels 2 34 store emergency escape equipment. The storage barrels 1 33 and storage barrels 2 34 are hot-melt materials. The multiple storage barrels 1 33 and multiple storage barrels 2 34 are sprayed into abnormally high temperature and fire areas. The multiple storage barrels 1 33 melt when heated, so that the internal fire extinguishing agents splash out to extinguish the fire. The multiple storage barrels 2 34 melt when heated, and the emergency escape equipment such as thermal insulation blankets and emergency masks therein are released. After the staff working in the fire area obtain these emergency escape equipment, the escape probability is increased.

[0029] Embodiment 3, as Figure 1 , Figure 2 and Fig.10 As shown, on the basis of embodiment 1, it also includes a bottom plate 35, a magnetic block 36, a power connection module 37, an inductor 1 38, a plug-in slot 39, an expansion module 40, a magnetic seat 41 and an inductor 2 42, the bottom plate 35 is installed on the side wall of the box body 1, a plurality of magnetic blocks 36 and a power connection module 37 are installed on the bottom plate 35, an inductor 1 38 and a plug-in slot 39 are arranged on the power connection module 37, a plurality of wiring terminals are installed at the bottom of the plug-in slot 39, a plurality of magnetic seats 41, an inductor 2 42 and a plug-in module 43 are arranged on the side wall of the expansion module 40, a plurality of magnetic seats 41 are matched with a plurality of magnetic blocks 36, and the inductors 36 are matched with the plurality of magnetic blocks 36. The inductor 2 42 matches the inductor 1 38, the plug-in module 43 matches the plug-in slot 39, and the plug-in terminal matching the multiple wiring terminals is arranged in the plug-in module 43; it also includes a partition 44, a spring 2 45 and a positioning rod 46, a transverse slot is arranged in the middle of the plug-in slot 39, the inner end of the partition 44 is slidably inserted in the transverse slot of the plug-in slot 39, and the outer end of the partition 44 extends out of the outside of the power connection module 37, the two ends of the spring 2 45 are respectively connected to the partition 44 and the power connection module 37, a positioning hole is arranged at the outer end of the partition 44, and a positioning rod 46 is installed on the expansion module 40, and the positioning rod 46 matches the positioning hole of the partition 44.

[0030] According to actual needs, the expansion module 40 has different built-in functional units. When the box body 1 needs to expand its functions, the multiple magnetic seats 41 of the expansion module 40 are respectively plugged into the multiple magnetic blocks 36 and fixed by magnetic attraction. At this time, the wiring module 43 is inserted into the wiring slot 39, so that the multiple wiring terminals are electrically connected to the multiple wiring terminals. At the same time, the sensor 2 42 is matched with the sensor 1 38 to apply electronic tags or NFC and other technologies for identity information recognition. The main control unit in the box body 1 determines whether to accept the expansion of the expansion module 40 according to the identity information. When the identity information is matched and confirmed, the functional unit of the expansion module 40 is connected to the main control unit of the box body 1, thereby temporarily expanding the function of the main control unit in the box body 1. There is no need to open the box door 2, which is more flexible and convenient. The elastic force of the spring 2 45 pushes the partition 44 to the wiring slot 39 The internal push causes the partition 44 to close the wire slot 39 to prevent the wiring terminals in the wire slot 39 from generating sparks to the outside. When installing the expansion module 40, the wire module 43 is inserted into the wire slot 39 and against the partition 44. When the partition 44 is pulled outward into place, the adsorption force of the multiple magnetic blocks 36 and the multiple magnetic seats 41 automatically installs the expansion module 40 into place. At this time, the wire terminals of the wire module 43 are plugged into the wiring terminals of the wire slot 39, and the positioning rod 46 is inserted into the positioning hole of the partition 44 to position the partition 44. The partition 44 is released to complete the expansion installation of the expansion module 40. When the expansion module 40 is removed, the positioning rod 46 is taken out from the positioning hole of the partition 44, and the elastic force of the spring 45 pushes the partition 44 inward to reset it, so that the multiple wiring terminals of the wire slot 39 are not exposed throughout the process.

[0031] like Figures 1 to 10As shown, a multi-purpose explosion-proof control box of the present invention, when working, firstly, in a normal state, the buffer bag 4 is folded and stored in the enclosure 3, and the top cover 5 covers the upper port of the enclosure 3, the elastic force of the spring 17 extends the telescopic rod 16, pushes the support plate 18, the spring piece 21 and the piston 22 to rise, so that the piston 22 presses the lower end surface of the pressure relief pipe 23 to seal, the spring piece 21 is in the shape of a flat disk, and the wedge block 19 is located above the hook of the hook plate 20, and then when an explosion occurs in the electrical chamber of the box body 1, the explosion pressure causes the pressure relief plate 1 8 and the pressure relief plate 2 9 to drive the multiple sockets 12 to flip and open upward, while the multiple plug-in tubes 10 remain stable, thereby breaking the multiple fragile tubes 13, and after the multiple fragile tubes 13 are broken, the fire extinguishing agent therein is sprayed downward at the fracture into the electrical chamber of the box body 1 to extinguish the explosion and combustion parts, and then the explosion pressure rushes into the buffer bag 4 through the pressure relief port of the box body 1, so that the buffer bag 4 expands upward Stretch, and lift the top cover 5 from the enclosure 3, so as to increase the effective volume of the electrical chamber of the box body 1. The increased volume can guide and absorb the explosion pressure, so that the pressure, smoke, etc. generated by the explosion are collected in the electrical chamber and the buffer bag 4 of the box body 1. When the hot smoke from the explosion contacts the shrapnel 21, the shrapnel 21 expands due to the heat and bulges downward, so that the shrapnel 21 becomes a convex bowl shape, and the shrapnel 21 pushes the support plate 18 and the wedge block 19 downward, so that the wedge block 19 is hooked by the hook of the hook plate 20. Finally, when the explosion and the fire inside the electrical chamber of the box body 1 are extinguished, the temperature decreases, and the shrapnel 21 shrinks from the bowl shape to the disc shape, thereby driving the piston 22 to descend, and the piston 22 is separated from the pressure relief pipe 23, so that the pressure relief pipe 23 is opened, and the low-temperature gas stored in the buffer bag 4 is discharged through the pressure relief pipe 23, and the top cover 5 and the buffer bag 4 fall back, and the internal and external pressures of the box body 1 are balanced. At this time, the box door 2 is opened to inspect the inside of the box body 1.

[0032] The main functions achieved by the present invention are: 1. Improve safety by increasing the effective volume to guide and absorb the explosion pressure and collect smoke; 2. It has a mechanical automatic pressure relief valve, which automatically releases pressure after the temperature drops, which is safe and reliable; 3. It can release fire extinguishing agent inward when an explosion occurs to extinguish the fire in the box, which is highly safe; 4. Able to detect fire conditions in the external environment and extinguish them; 5. Able to launch emergency equipment to increase the chance of escape; 6. Ability to flexibly connect external expansion modules to achieve versatility.

[0033] A multi-purpose explosion-proof control box of the present invention has a common mechanical installation method, a connection method or a setting method, which can be implemented as long as it can achieve its beneficial effects; a multi-purpose explosion-proof control box of the present invention has a box body 1, a box door 2, a buffer bag 4, a pressure relief plate 8, a pressure relief plate 9, a fragile tube 13, a fire extinguishing agent, a telescopic rod 16, a spring 17, a shrapnel 21, a piston 22, a pressure relief tube 23, a sensor unit 25, a temperature sensor 26, a gear 29, a motor 30, a gear 2 31, a gas storage unit 32, a storage barrel 1 33, a storage barrel 2 34, a bottom plate 35, a magnetic block 36, a sensor 1 38, a wiring slot 39, a magnetic seat 41, a sensor 2 42, a wiring module 43, and a spring 2 45, which are purchased on the market, and technicians in the industry only need to install and operate them according to the accompanying instruction manual, without the need for creative labor by technicians in this field.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A multi-purpose explosion-proof control box, comprising a box body (1) and a box door (2), wherein an electrical chamber is arranged inside the box body (1), a front end surface of the box body (1) is provided with an inspection port communicating with the electrical chamber, and the box door (2) is mounted on the inspection port; characterized in that: The box body (1) further comprises a surrounding plate (3), a buffer bag (4) and a top cover (5); the upper end surface of the box body (1) is provided with a pressure relief port connected to the electrical chamber; the surrounding plate (3) is mounted around the pressure relief port of the box body (1); the buffer bag (4) is cylindrical; the buffer bag (4) is made of a flexible sealing refractory material; the lower end of the buffer bag (4) is sealedly connected to the inner wall of the surrounding plate (3); the buffer bag (4) is folded and stored in the surrounding plate (3); the upper end of the buffer bag (4) is connected to the lower end surface of the top cover (5); and the top cover (5) is placed on the upper end of the surrounding plate (3).

2. A multi-purpose explosion-proof control box as claimed in claim 1, characterized in that: The invention also comprises a middle mounting frame (6), a side mounting frame (7), a pressure relief plate 1 (8) and a pressure relief plate 2 (9), wherein the middle mounting frame (6) is mounted in the middle of the pressure relief opening of the box body (1), two side mounting frames (7) are provided, and the two side mounting frames (7) are mounted on both sides of the pressure relief opening of the box body (1), the lower end surfaces of the middle mounting frame (6) and the side mounting frame (7) are both inclined, the pressure relief plate 1 (8) is hinged on the middle mounting frame (6), the pressure relief plate 2 (9) is hinged on the side mounting frame (7), and the pressure relief opening of the box body (1) is closed when the pressure relief plate 1 (8) and the pressure relief plate 2 (9) are laid flat.

3. A multi-purpose explosion-proof control box as claimed in claim 2, characterized in that: The invention also comprises a plurality of inserting tubes (10), a plurality of tips (11), a plurality of sockets (12) and a plurality of fragile tubes (13); the plurality of inserting tubes (10) are installed on the lower end surfaces of the middle mounting frame (6) and the side mounting frame (7); the plurality of inserting tubes (10) are provided with tips (11) on the upper sides of the outer ends of the plurality of inserting tubes (10); the plurality of sockets (12) are installed on the lower end surfaces of the pressure relief plate 1 (8) and the pressure relief plate 2 (9); the plurality of sockets (12) and the plurality of inserting tubes (10) are respectively aligned; the two ends of the plurality of fragile tubes (13) are respectively inserted in the plurality of sockets (12) and the plurality of inserting tubes (10) which are respectively aligned; and the plurality of fragile tubes (13) store fire extinguishing agent.

4. A multi-purpose explosion-proof control box as claimed in claim 3, characterized in that: It also comprises an annular groove (14). The outer walls of the plurality of fragile tubes (13) are all provided with an annular groove (14). When the fragile tubes (13) are inserted into the insertion tube (10) and the socket (12), the annular groove (14) is located below the tip (11).

5. A multi-purpose explosion-proof control box as claimed in claim 1, characterized in that: The utility model also comprises a bracket (15), a telescopic rod (16), a spring (17), a support plate (18), a wedge block (19), a hook plate (20), a spring piece (21), a piston (22) and a pressure relief pipe (23), wherein the upper end of the bracket (15) is mounted on the lower end surface of the top cover (5), the lower end of the telescopic rod (16) is connected to the bracket (15), the upper end of the telescopic rod (16) is mounted on the support plate (18), the lower end of the spring (17) is connected to the bracket (15), the upper end of the spring (17) is connected to the support plate (18), and a wedge block is arranged on the side wall of the support plate (18). (19), the hook plate (20) is elastically mounted on the bracket (15), the upper end of the hook plate (20) is provided with a hook matched with the wedge block (19), the spring piece (21) is a heat-sensitive metal sheet, the spring piece (21) is disc-shaped at room temperature, and is bowl-shaped when heated, the bottom of the spring piece (21) is connected to the bracket (18), the upper edge of the spring piece (21) is connected to the lower end of the piston (22), the pressure relief pipe (23) is installed on the top cover (5), the piston (22) is aligned with the lower end of the pressure relief pipe (23), and the piston (22) seals the pressure relief pipe (23).

6. A multi-purpose explosion-proof control box as claimed in claim 1, characterized in that: It also includes a channel steel (24), a plurality of sensor units (25), and a plurality of temperature sensors (26), wherein at least two channel steels (24) are provided, the channel steel (24) is mounted on the top of the box body (1), the plurality of sensor units (25) are mounted on the channel steel (24), the plurality of sensor units (25) are evenly arranged around the box body (1), the plurality of temperature sensors (26) are mounted on each of the plurality of sensor units (25), and the plurality of temperature sensors (26) are respectively oriented at different angles toward the box body (1).

7. A multi-purpose explosion-proof control box as claimed in claim 6, characterized in that: The invention also comprises a swing arm (27), a shaft (28), a gear 1 (29), a motor 1 (30), a gear 2 (31) and a gas storage unit (32). A launch tube is arranged at the movable end of the swing arm (27). The hinged end of the swing arm (27) is rotatably connected to the shaft (28). The shaft (28) is installed in a groove of a channel steel (24). The gear 1 (29) is coaxially installed on the shaft (28). The motor 1 (30) is installed on the swing arm (27). The output shaft of the motor 1 (30) is coaxially installed with the gear 2 (31). The gear 2 (31) meshes with the gear 1 (29). The gas storage unit (32) is installed on the swing arm (27). The gas storage unit (32) is provided with a gas storage bottle and a gas transmission pipeline. The output end of the gas transmission pipeline of the gas storage unit (32) is connected to the launch tube of the swing arm (27).

8. A multi-purpose explosion-proof control box as claimed in claim 7, characterized in that: It also includes a plurality of storage barrels one (33) and a plurality of storage barrels two (34), wherein the plurality of storage barrels one (33) and the plurality of storage barrels two (34) are loaded in the launching tube of the swing arm (27), wherein the plurality of storage barrels one (33) store fire extinguishing agents, and the plurality of storage barrels two (34) store emergency escape equipment, and the storage barrels one (33) and the storage barrels two (34) are made of hot-melt materials.

9. A multi-purpose explosion-proof control box as claimed in claim 1, characterized in that: The invention also comprises a bottom plate (35), a magnetic block (36), a power connection module (37), an inductor 1 (38), a wire insertion slot (39), an expansion module (40), a magnetic seat (41) and an inductor 2 (42); the bottom plate (35) is mounted on the side wall of the box body (1); a plurality of magnetic blocks (36) and a power connection module (37) are mounted on the bottom plate (35); an inductor 1 (38) and a wire insertion slot (39) are arranged on the power connection module (37); a plurality of wiring terminals are installed at the bottom of the wire insertion slot (39); a plurality of magnetic seats (41), an inductor 2 (42) and a wire insertion module (43) are arranged on the side wall of the expansion module (40); the plurality of magnetic seats (41) are matched with the plurality of magnetic blocks (36); the inductor 2 (42) is matched with the inductor 1 (38); the wire insertion module (43) is matched with the wire insertion slot (39); and a wire insertion terminal matched with the plurality of wiring terminals is arranged in the wire insertion module (43).

10. A multi-purpose explosion-proof control box as claimed in claim 9, characterized in that: It also includes a partition (44), a second spring (45) and a positioning rod (46). A transverse slot is provided in the middle of the wire slot (39). The inner end of the partition (44) is slidably inserted into the transverse slot of the wire slot (39). The outer end of the partition (44) extends out of the outside of the power connection module (37). The two ends of the second spring (45) are respectively connected to the partition (44) and the power connection module (37). A positioning hole is provided at the outer end of the partition (44). The positioning rod (46) is installed on the expansion module (40). The positioning rod (46) matches the positioning hole of the partition (44).

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