Protective low-voltage fixed power distribution cabinet and protection method thereof
By setting up auxiliary mechanisms in the distribution cabinet, automatic fire extinguishing and smoke treatment is achieved, the problem of manual intervention in the existing distribution cabinet is solved, the protective performance is improved, and equipment damage and environmental pollution are reduced.
Patent Information
- Application Number
- CN202510424696.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2025-08-12
AI Technical Summary
In the event of electrical failure of existing protective low-voltage fixed distribution cabinets, manual intervention is required to extinguish the fire, resulting in serious damage to the equipment, high maintenance costs and harmful smoke and pollute the environment.
An auxiliary mechanism is designed, including an auxiliary shell, an electric valve, a tee pipe, a flame sensor and a high-pressure cylinder, which can automatically extinguish fire and treat harmful smoke. The controller coordinates the actions of each component to achieve automatic fire extinguishing, cooling and smoke purification.
Automatic fire extinguishing and harmful smoke treatment of distribution cabinets are realized, reducing fire spread and environmental pollution, and reducing maintenance costs and personnel safety risks.
Smart Images
Figure CN120473837A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of power distribution cabinets, and in particular to a protective low-voltage fixed power distribution cabinet and a protection method thereof. Background Art
[0002] In modern industrial and living scenarios, distribution cabinets are key equipment for power distribution and control, and their stable operation is crucial. However, traditional distribution cabinets have limited protection capabilities when facing various potential risks in complex usage environments, and are prone to electrical failures and safety accidents. In order to reduce the failure rate of distribution cabinets, people usually use protective low-voltage fixed distribution cabinets.
[0003] However, the existing protective low-voltage fixed distribution cabinets have the following shortcomings: When a fire occurs inside a protective low-voltage fixed distribution cabinet due to an electrical fault, it is often necessary to wait for the staff to arrive at the scene before the fire can be extinguished. This not only aggravates the damage to the equipment inside the distribution cabinet, but also increases maintenance costs and personnel safety risks. At the same time, when a fire occurs, a large amount of harmful smoke will be generated and directly released into the external environment, which will not only endanger human health but also pollute the atmospheric environment.
[0004] Therefore, we propose a protective low-voltage fixed distribution cabinet and a protection method thereof in order to solve the problems raised above. Summary of the Invention
[0005] The purpose of the present invention is to provide a protective low-voltage fixed distribution cabinet and a protection method thereof. By setting up an auxiliary mechanism, the protective low-voltage fixed distribution cabinet can automatically perform fire extinguishing operations and at the same time process the harmful smoke generated. This not only can control the fire in time and effectively prevent the spread of fire, but also can reduce environmental pollution, thereby reducing maintenance costs and personnel safety risks to solve the problems raised by the above background technology.
[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a protective low-voltage fixed power distribution cabinet, comprising a power distribution cabinet body, wherein the power distribution cabinet body is provided with an auxiliary mechanism; and a tube connecting the discharging opening of the gas supply duct and the gas supply duct, and a tube connecting the discharging opening of the gas supply duct, the gas supply duct of the gas supply duct being connected the outlet port of the gas supply duct and the gas supply duct of the gas supply duct.
[0007] Preferably, the air inlet end of one of the connecting pipes is installed with the air outlet end of the manual valve, the air outlet end of one of the connecting pipes is movable through the other side of the inner wall of the auxiliary shell, the air outlet end of the other connecting pipe is installed with the other air inlet end of the three-way pipe, and the bottom end of the fireproof plate is movable through the bottom of the inner wall of the auxiliary shell.
[0008] Preferably, the top of each porous shell is in contact with the bottom of the shell cover, the air outlet end of one of the auxiliary pipes is installed with the air inlet end of the second electric valve, and the first electric valve, the second electric valve, the third electric valve, the flame sensor, the electric push rod and the fan are all electrically connected to the controller.
[0009] Preferably, the distribution cabinet body includes a base, on which two symmetrical brackets are installed, and side panels are installed on the opposite sides of the two brackets, one of the side panels is connected to the cabinet door at a corner through a hinge, and a back panel is installed between the two brackets away from the cabinet door.
[0010] Preferably, a top plate is installed between the tops of the two brackets, double groove bars are installed on the opposite sides of the two side plates, two mounting frames are installed between the surfaces of the two double groove bars, and two protective plates that are connected to each other are installed on each bracket.
[0011] Preferably, the front surfaces of the two brackets are in contact with the surface of the cabinet door, and the four protective plates are divided into two groups. The protective plates in each group are movably clamped inside the two grooves of each double-groove bar.
[0012] Preferably, the bottom of the back panel, the bottom of the cabinet door and the bottom of the two side panels are all in contact with the top of the base, and the top of the back panel, the top of the cabinet door and the top of the two side panels are all in contact with the bottom of the top panel.
[0013] Preferably, the gas outlet end of the three-way pipe is fixedly passed through the surface of the back plate, the flame sensor is installed on the surface of the back plate, and the detection end of the flame sensor is movable through the surface of the back plate.
[0014] Preferably, the front surface of the auxiliary shell is fixed to the surface of the back panel, the front surface of the fireproof board is in contact with the surface of the back panel, and the air inlet end of the other auxiliary pipe is fixed through one side of the other side panel.
[0015] A protection method for a protective low-voltage fixed distribution cabinet comprises the following steps: S1. When the components of the power distribution cabinet need to be assembled, first install the two brackets to the base, then install the two sets of protective plates to the two brackets respectively, then install the two side panels to the two brackets respectively, then hinge the cabinet door to one of the side panels, then install the back panel to the two brackets together, then install the two double-slot bars to the two side panels respectively, then install the top panel to the two brackets together, and then install the two mounting brackets on the two double-slot bars; S2. When the power distribution cabinet is in use, the cover is opened first, and activated carbon particles and aluminosilicate particles are placed into the two porous shells respectively. Then, the mounting plate is opened, and the controller is connected to the external power supply. Then, the manual valve is opened. Then, the controller and the flame sensor are used to monitor the interior of the power distribution cabinet for fire. When a fire occurs inside the power distribution cabinet, the heat dissipation holes inside the power distribution cabinet are blocked by using the controller, auxiliary shell, electric push rod and fireproof plate. S3. Then, the controller, manual valve, two connecting pipes, first electric valve, tee pipe, and nozzle cooperate to deliver carbon dioxide from the high-pressure cylinder to the interior of the power distribution cabinet body to extinguish the fire therein. When the fire extinguishing operation is completed inside the power distribution cabinet body, the controller is directly used to close the first electric valve. Then, the controller, auxiliary housing, fan, one of the auxiliary pipes, tee pipe, second electric valve, and nozzle cooperate to deliver cold air from the environment to the interior of the power distribution cabinet body to cool the interior therein. S4. When the cooling operation inside the power distribution cabinet body is completed, the gas inside the power distribution cabinet body is first transported to the inside of the processing shell by using the cooperation of the controller, the third electric valve and another auxiliary pipe. Then, the harmful gas transported to the inside of the processing shell is treated by using the cooperation of the shell cover, the activated carbon particles and the aluminosilicate particles inside the two porous shells. Then, the other gases transported to the inside of the processing shell are transported to the environment by using the cooperation of the one-way valve. When the harmful gas inside the power distribution cabinet body is completely treated, the second electric valve, the fan and the third electric valve are closed by using the controller. Then, the fireproof plate is reset to its original position by using the cooperation of the controller, the electric push rod and the auxiliary shell.
[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention, by providing an auxiliary mechanism, enables the protective low-voltage fixed distribution cabinet to automatically perform fire extinguishing operations and simultaneously process the generated harmful smoke. This not only allows timely control of fires and effectively prevents the spread of fire, but also reduces environmental pollution, thereby reducing maintenance costs and personnel safety risks. When the distribution cabinet body is in use, the shell cover is first opened, and activated carbon particles and aluminosilicate particles are respectively placed into the interiors of the two porous shells. Subsequently, the mounting plate is opened, and the controller is connected to the external power supply. The manual valve is then opened. After that, the controller and the flame sensor cooperate to realize fire monitoring inside the distribution cabinet body. 2. In the present invention, when a fire occurs inside the power distribution cabinet body, the heat dissipation holes inside the power distribution cabinet body can be blocked by using the cooperation of the controller, auxiliary shell, electric push rod and fireproof plate. Then, the carbon dioxide inside the high-pressure steel cylinder can be transported to the inside of the power distribution cabinet body by using the cooperation of the controller, manual valve, two connecting pipes, the first electric valve, the three-way pipe and the nozzle. When the fire extinguishing operation is completed inside the power distribution cabinet body, the first electric valve is directly closed by using the controller. Then, the cold air in the environment can be transported to the inside of the power distribution cabinet body by using the cooperation of the controller, auxiliary shell, fan, one of the auxiliary pipes, the three-way pipe, the second electric valve and the nozzle. It is possible to cool the inside of the power distribution cabinet body. 3. In the present invention, when the cooling operation is completed inside the power distribution cabinet body, the controller, the third electric valve and another auxiliary pipe are first used to transport the gas inside the power distribution cabinet body to the inside of the processing shell. Then, the shell cover, the activated carbon particles and the aluminosilicate particles inside the two porous shells are used to treat the harmful gas transported to the inside of the processing shell. Then, the one-way valve is used to transport other gases transported to the inside of the processing shell to the environment. When the harmful gas inside the power distribution cabinet body is completely treated, the controller is used to close the second electric valve, the fan and the third electric valve. Then, the controller, the electric push rod and the auxiliary shell are used to drive the fireproof plate to reset and move until the fireproof plate is reset to its original position. 4. The present invention can increase the protection performance of the low-voltage fixed distribution cabinet by setting the distribution cabinet body, thereby reducing the occurrence of safety accidents. When the various components of the distribution cabinet body need to be assembled, the two brackets are first installed together with the base, and then the two sets of protective plates are installed together with the two brackets respectively, and then the two side panels are installed together with the two brackets respectively, and then the cabinet door is hinged to one of the side panels, and then the back panel is installed together with the two brackets, and then the two double-slot bars are installed together with the two side panels respectively, and then the top plate is installed together with the two brackets, and then the two mounting frames are installed on the two double-slot bars. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a three-dimensional diagram of a protective low-voltage fixed power distribution cabinet of the present invention; Figure 2 This is a three-dimensional view from another angle of a protective low-voltage fixed power distribution cabinet of the present invention; Figure 3 This is a partially cutaway perspective view of a protective low-voltage fixed power distribution cabinet according to the present invention; Figure 4 This is a partial structural diagram of a protective low-voltage fixed power distribution cabinet according to the present invention; Figure 5 This is a partial perspective view of a protective low-voltage fixed power distribution cabinet according to the present invention; Figure 6 This is a partial three-dimensional diagram of the auxiliary mechanism of a protective low-voltage fixed power distribution cabinet of the present invention; Figure 7 This is a partially cutaway perspective view of an auxiliary mechanism of a protective low-voltage fixed power distribution cabinet according to the present invention; Figure 8 This is a three-dimensional diagram of the main body of a protective low-voltage fixed power distribution cabinet of the present invention.
[0018] In the picture: 1. Distribution cabinet body; 101. Base; 102. Bracket; 103. Side panel; 104. Back panel; 105. Cabinet door; 106. Top panel; 107. Protective plate; 108. Double groove bar; 109. Mounting frame; 2. Auxiliary mechanism; 201. Auxiliary shell; 202. Mounting plate; 203. High-pressure cylinder; 204. Manual valve; 205. First electric valve; 206. Connecting pipe; 207. Tee pipe; 208. Second electric valve; 209. Fan; 210. Auxiliary pipe; 211. Controller; 212. Flame sensor; 213. Electric push rod; 214. Fireproof board; 215. Processing shell; 216. Porous shell; 217. Shell cover; 218. Nozzle; 219. Third electric valve; 220. One-way valve. DETAILED DESCRIPTION
[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.
[0020] Example 1: Please refer to Figure 1-Figure 7 As shown, the present invention provides a technical solution: a protective low-voltage fixed power distribution cabinet, comprising a power distribution cabinet body 1, on which an auxiliary mechanism 2 is provided; The auxiliary mechanism 2 includes an auxiliary shell 201, a first electric valve 205, a three-way pipe 207 and a flame sensor 212. The surface of the auxiliary shell 201 is installed with a mounting plate 202. A high-pressure steel cylinder 203 is placed inside the auxiliary shell 201. A manual valve 204 is installed on the top of the high-pressure steel cylinder 203. The air inlet end of the first electric valve 205 and the air outlet end of the first electric valve 205 are both installed with connecting pipes 206. One of the air inlet ends of the three-way pipe 207 is installed with a second electric valve 208. A fan 209 is installed on the top of the auxiliary shell 201. A control valve 206 is installed on one side of the inner wall of the auxiliary shell 201. The auxiliary shell 201 is provided with an electric push rod 213 on its inner wall, a fireproof plate 214 is provided on one end of the telescopic end of the electric push rod 213, a processing shell 215 is provided on the upper side of the auxiliary shell 201, two porous shells 216 are slidably embedded on the top of the processing shell 215, a shell cover 217 is provided on the top of the processing shell 215, a nozzle 218 is provided on the outlet end of the three-way pipe 207, a third electric valve 219 is provided on the air inlet end of the processing shell 215, an auxiliary pipe 210 is provided on the air inlet end of the third electric valve 219 and the air outlet end of the fan 209, and the air outlet end of the processing shell 215 is provided with a nozzle 218. A one-way valve 220 is installed, the air inlet end of one of the connecting pipes 206 is installed with the air outlet end of the manual valve 204, the air outlet end of one of the connecting pipes 206 is movable through the other side of the inner wall of the auxiliary shell 201, and the air outlet end of the other connecting pipe 206 is installed with the other air inlet end of the three-way pipe 207. The bottom end of the fireproof plate 214 is movable through the bottom of the inner wall of the auxiliary shell 201. The top of each porous shell 216 is in contact with the bottom of the shell cover 217. The air outlet end of one of the auxiliary pipes 210 is installed with the air inlet end of the second electric valve 208. The first electric valve 205 and the second The electric valve 208, the third electric valve 219, the flame sensor 212, the electric push rod 213 and the fan 209 are all electrically connected to the controller 211. The air outlet end of the three-way pipe 207 is fixed through the surface of the back plate 104. The flame sensor 212 is installed on the surface of the back plate 104, and the detection end of the flame sensor 212 is movable through the surface of the back plate 104. The front surface of the auxiliary shell 201 is fixed to the surface of the back plate 104. The front surface of the fireproof plate 214 is in contact with the surface of the back plate 104. The air inlet end of the other auxiliary pipe 210 is fixed through one side of the other side plate 103.
[0021] In this embodiment, when the power distribution cabinet body 1 is used, the shell cover 217 is first opened, and activated carbon particles and aluminosilicate particles are respectively placed into the two porous shells 216, and then the shell cover 217 is reset to its original position, and then the mounting plate 202 is opened, and then the controller 211 is connected to the external power supply, and then the controller 211 is turned on, and the infrared radiation intensity threshold and the ultraviolet radiation intensity threshold are set, and then the manual valve 204 is opened, and then the flame sensor 212 is started by the controller 211, and then the mounting plate 202 is reset to its original position. At this time, the started flame sensor 212 will detect the infrared radiation intensity and ultraviolet radiation intensity of the interior of the power distribution cabinet body 1, and the detected infrared radiation intensity data will be displayed. The infrared radiation intensity data and ultraviolet radiation intensity data are transmitted to the controller 211 in the form of electrical signals, and the controller 211 compares the received infrared radiation intensity data and ultraviolet radiation intensity data with the preset infrared radiation intensity threshold and ultraviolet radiation intensity threshold respectively. When the infrared radiation intensity data received by the controller 211 is within the preset infrared radiation intensity threshold range, or the ultraviolet radiation intensity data received by the controller 211 is within the preset ultraviolet radiation intensity threshold range, the controller 211 will not start the first electric valve 205 and the electric push rod 213. When the infrared radiation intensity data received by the controller 211 is higher than the preset infrared radiation intensity threshold, and the ultraviolet radiation intensity data received by the controller 211 is higher than the preset ultraviolet radiation intensity threshold, the controller 211 will not start the first electric valve 205 and the electric push rod 213. When the ultraviolet radiation intensity data is also higher than the pre-set ultraviolet radiation intensity threshold, the controller 211 will directly start the electric push rod 213. At this time, the started electric push rod 213 will drive the fireproof plate 214 to move vertically downward with the cooperation of the auxiliary shell 201. When the fireproof plate 214 moves to a point where it can no longer move, the fireproof plate 214 just blocks the heat dissipation holes on the back plate 104. At the same time, the controller 211 will first close the electric push rod 213 and then start the first electric valve 205. At this time, the closed electric push rod 213 will stop the fireproof plate 214 from moving. At the same time, the started first electric valve 205 will release the carbon dioxide stored in the high-pressure cylinder 203 to the three-way pipe 206 with the cooperation of the two connecting pipes 206 and the manual valve 204 that opens the valve. 7, and then the three-way pipe 207, in cooperation with the nozzle 218, releases the carbon dioxide inside it into the interior of the distribution cabinet body 1 to perform a fire extinguishing operation on the interior of the distribution cabinet body 1. When the fire extinguishing operation is completed inside the distribution cabinet body 1, the controller 211 will close the first electric valve 205. At this time, the closed first electric valve 205 will stop releasing carbon dioxide into the interior of the distribution cabinet body 1 with the cooperation of the above-mentioned components. Then the controller 211 will start the fan 209 and the second electric valve 208. At this time, the started fan 209 will cooperate with one of the auxiliary pipes 210, the started second electric valve 208, the three-way pipe 207 and the nozzle 218 to suck in the cold air in the environment and deliver it to the interior of the distribution cabinet body 1.The high-temperature gas inside the distribution cabinet body 1 is cooled. When the high-temperature gas inside the distribution cabinet body 1 completes the cooling operation, the controller 211 will start the third electric valve 219. At this time, the gas inside the distribution cabinet body 1 will be released into the interior of the processing shell 215 under the cooperation of another auxiliary pipe 210 and the started third electric valve 219. Subsequently, the harmful gas released into the processing shell 215 will be adsorbed and processed by the cooperation of the activated carbon particles and the aluminosilicate particles inside the two porous shells 216, and released into the processing shell 215. Other gases in the interior will be directly released with the cooperation of the one-way valve 220. When the harmful gases inside the distribution cabinet body 1 are completely processed, the controller 211 will directly shut down the fan 209, the second electric valve 208, and the third electric valve 219. Then the controller 211 will directly activate the electric push rod 213. The activated electric push rod 213 will drive the fireproof plate 214 to move vertically upward until the fireproof plate 214 moves to a point where it can no longer move. This completes the fire extinguishing operation inside the distribution cabinet body 1 and also completes the harmful gas processing operation.
[0022] Example 2: According to Figure 1-Figure 5 and Figure 8 As shown, the power distribution cabinet body 1 includes a base 101, on which two symmetrical brackets 102 are installed. Side panels 103 are installed on the opposite sides of the two brackets 102. A cabinet door 105 is connected to the corner of one side panel 103 by a hinge. A back panel 104 is installed between the sides of the two brackets 102 away from the cabinet door 105. A top panel 106 is installed between the tops of the two brackets 102. Double groove bars 108 are installed on the opposite sides of the two side panels 103. Two mounting brackets 108 are installed between the surfaces of the two double groove bars 108. 09. Two clip-on protective plates 107 are installed on each bracket 102. The front surfaces of the two brackets 102 are in contact with the surface of the cabinet door 105. The four protective plates 107 are divided into two groups. Each group of protective plates 107 is movably clipped into the two grooves of each double-slot bar 108. The bottom of the back panel 104, the bottom of the cabinet door 105 and the bottom of the two side panels 103 are in contact with the top of the base 101. The top of the back panel 104, the top of the cabinet door 105 and the top of the two side panels 103 are in contact with the bottom of the top panel 106.
[0023] In this embodiment, when it is necessary to assemble the components of the power distribution cabinet body 1, the base 101 is first placed in a flat and appropriate position, and then the two brackets 102 are installed in the appropriate position of the base 101, and then the two sets of protective plates 107 are clamped and connected, and the two sets of clamped protective plates 107 are respectively installed on the two brackets 102, and then the two side panels 103 are respectively installed on the two brackets 102, and then the cabinet door 105 is installed in the appropriate position of one of the side panels 103 through the prepared hinge, and then the cabinet door 105 is installed. The back panel 104 is installed between the two brackets 102, and then the two double-slot bars 108 are respectively installed on the two side panels 103, and each set of protective plates 107 is respectively snapped into the two grooves of each double-slot bar 108, and then the top plate 106 is installed on the two brackets 102, and finally the two mounting frames 109 are installed at the appropriate positions of the two double-slot bars 108. When the distribution cabinet body 1 is assembled, the electrical equipment required for the distribution cabinet is assembled according to the basic principles, installation standards and specifications of electrical connection, and it can be used.
[0024] In the present invention, when it is necessary to assemble the various components of the power distribution cabinet body 1, the base 101 is first placed in a flat and appropriate position, and then the two brackets 102 are installed in appropriate positions on the base 101. Then, the two sets of protective plates 107 are clamped and the two clamped sets of protective plates 107 are respectively installed on the two brackets 102. Then, the two side panels 103 are respectively installed on the two brackets 102. Then, the cabinet door 105 is installed at a suitable position on one of the side panels 103 through the prepared hinges. Then, the back panel 104 is installed between the two brackets 102. Then, the two double groove bars 108 are respectively installed on the two side panels 103, and each set of protective plates 107 is clamped on each double groove bar 108. , and then install the top plate 106 on the two brackets 102, and finally install the two mounting brackets 109 on the appropriate positions of the two double-slot bars 108. When the distribution cabinet body 1 is assembled, the electrical equipment required for the distribution cabinet is assembled in accordance with the basic principles, installation standards and specifications of electrical connection, and it can be used. When the distribution cabinet body 1 is used, first open the shell cover 217, and put activated carbon particles and aluminosilicate particles into the two porous shells 216 respectively, then reset the shell cover 217 to its original position, and then open the mounting plate 202, and then connect the controller 211 to the external power supply, and then turn on the controller 211, and set the infrared radiation intensity threshold and the ultraviolet radiation intensity threshold, and then turn on the hand The movable valve 204 is opened, and then the flame sensor 212 is started by the controller 211, and then the mounting plate 202 is reset to its original position. At this time, the started flame sensor 212 will detect the infrared radiation intensity and ultraviolet radiation intensity of the interior of the power distribution cabinet body 1, and transmit the detected infrared radiation intensity data and ultraviolet radiation intensity data to the controller 211 in the form of electrical signals. The controller 211 will compare the received infrared radiation intensity data and ultraviolet radiation intensity data with the pre-set infrared radiation intensity threshold and ultraviolet radiation intensity threshold respectively. When the infrared radiation intensity data received by the controller 211 is within the pre-set infrared radiation intensity threshold range, or the ultraviolet radiation intensity received by the controller 211 is When the data is within the preset ultraviolet radiation intensity threshold range, the controller 211 will not start the first electric valve 205 and the electric push rod 213. When the infrared radiation intensity data received by the controller 211 is higher than the preset infrared radiation intensity threshold, and the ultraviolet radiation intensity data received by the controller 211 is also higher than the preset ultraviolet radiation intensity threshold, the controller 211 will directly start the electric push rod 213. At this time, the started electric push rod 213 will drive the fireproof plate 214 to move vertically downward with the cooperation of the auxiliary shell 201. When the fireproof plate 214 moves to the point where it can no longer move, the fireproof plate 214 just blocks the heat dissipation holes on the back plate 104. At the same time, the controller 211 will first turn off the electric push rod 213.Then start the first electric valve 205. At this time, the closed electric push rod 213 will stop the fireproof plate 214 from moving. At the same time, the started first electric valve 205 will release the carbon dioxide stored in the high-pressure cylinder 203 into the interior of the three-way pipe 207 under the cooperation of the two connecting pipes 206 and the manual valve 204 that opens the valve. Then, the three-way pipe 207 releases the carbon dioxide inside the distribution cabinet body 1 under the cooperation of the nozzle 218, and performs the fire extinguishing operation on the interior of the distribution cabinet body 1. When the interior of the distribution cabinet body 1 is completely extinguished, During the fire operation, the controller 211 will close the first electric valve 205. At this time, the closed first electric valve 205 will stop releasing carbon dioxide into the interior of the distribution cabinet body 1 under the cooperation of the above-mentioned components. Then the controller 211 will start the fan 209 and the second electric valve 208. At this time, the started fan 209 will cooperate with one of the auxiliary pipes 210, the started second electric valve 208, the three-way pipe 207 and the nozzle 218 to suck in the cold air in the environment and transport it to the interior of the distribution cabinet body 1, thereby cooling the interior of the distribution cabinet body 1. The high-temperature gas inside the power distribution cabinet body 1 is cooled down. When the high-temperature gas inside the power distribution cabinet body 1 completes the cooling operation, the controller 211 will start the third electric valve 219. At this time, the gas inside the power distribution cabinet body 1 will be released into the interior of the processing shell 215 under the cooperation of another auxiliary pipe 210 and the started third electric valve 219. Subsequently, the harmful gas released into the processing shell 215 will be adsorbed and processed under the cooperation of the activated carbon particles and the aluminosilicate particles inside the two porous shells 216, while other gases released into the processing shell 215 will be removed. With the cooperation of the one-way valve 220, the air is directly released. When the harmful gas inside the distribution cabinet body 1 is completely processed, the controller 211 will directly shut down the fan 209, the second electric valve 208, and the third electric valve 219. Then the controller 211 will directly activate the electric push rod 213. The activated electric push rod 213 will drive the fire protection plate 214 to move vertically upward until the fire protection plate 214 moves to a point where it can no longer move. This completes the fire extinguishing operation inside the distribution cabinet body 1 and also completes the harmful gas processing operation.
[0025] Among them, the controller 211 (PLC controller), the first electric valve 205, the second electric valve 208, the third electric valve 219, the fan 209, the electric push rod 213 and the flame sensor 212 are all existing technologies, and their working principles are all public technologies. Their models can be selected according to actual conditions and will not be explained in detail here.
[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.
Claims
1. A protective low-voltage fixed distribution cabinet, comprising a distribution cabinet body (1), characterized in that: The power distribution cabinet body (1) is provided with an auxiliary mechanism (2); The auxiliary mechanism (2) comprises an auxiliary shell (201), a first electric valve (205), a three-way pipe (207) and a flame sensor (212); a mounting plate (202) is mounted on the surface of the auxiliary shell (201); a high-pressure steel cylinder (203) is placed inside the auxiliary shell (201); a manual valve (204) is mounted on the top of the high-pressure steel cylinder (203); a connecting pipe (206) is mounted on the air inlet end of the first electric valve (205) and the air outlet end of the first electric valve (205); a second electric valve (208) is mounted on one of the air inlet ends of the three-way pipe (207); a fan (209) is mounted on the top of the auxiliary shell (201); and a controller (211) is mounted on one side of the inner wall of the auxiliary shell (201). The inner wall of the auxiliary shell (201) is installed with an electric push rod (213), and one end of the telescopic end of the electric push rod (213) is installed with a fireproof plate (214). The upper side of the auxiliary shell (201) is installed with a processing shell (215), and two porous shells (216) are slidably embedded on the top of the processing shell (215). The top of the processing shell (215) is installed with a shell cover (217). The air outlet end of the three-way pipe (207) is installed with a nozzle (218), and the air inlet end of the processing shell (215) is installed with a third electric valve (219). The air inlet end of the third electric valve (219) and the air outlet end of the fan (209) are both installed with auxiliary pipes (210), and the air outlet end of the processing shell (215) is installed with a one-way valve (220).
2. The protective low-voltage fixed distribution cabinet according to claim 1, characterized in that: The air inlet end of one of the connecting pipes (206) is installed with the air outlet end of the manual valve (204), the air outlet end of one of the connecting pipes (206) is movably passed through the other side of the inner wall of the auxiliary shell (201), the air outlet end of the other connecting pipe (206) is installed with the other air inlet end of the three-way pipe (207), and the bottom end of the fireproof plate (214) is movably passed through the bottom of the inner wall of the auxiliary shell (201).
3. The protective low-voltage fixed distribution cabinet according to claim 2, characterized in that: The top of each porous shell (216) is in contact with the bottom of the shell cover (217), the air outlet end of one of the auxiliary pipes (210) is installed with the air inlet end of the second electric valve (208), and the first electric valve (205), the second electric valve (208), the third electric valve (219), the flame sensor (212), the electric push rod (213) and the fan (209) are all electrically connected to the controller (211).
4. The protective low-voltage fixed power distribution cabinet according to claim 3, characterized in that: The power distribution cabinet body (1) comprises a base (101), two symmetrical brackets (102) are mounted on the base (101), side panels (103) are mounted on opposite sides of the two brackets (102), a corner of one of the side panels (103) is connected to a cabinet door (105) by a hinge, and a back panel (104) is mounted between the sides of the two brackets (102) away from the cabinet door (105).
5. The protective low-voltage fixed distribution cabinet according to claim 4, characterized in that: A top plate (106) is installed between the tops of the two brackets (102), double groove bars (108) are installed on opposite sides of the two side plates (103), two mounting frames (109) are installed between the surfaces of the two double groove bars (108), and two protective plates (107) that are connected to each other are installed on each bracket (102).
6. The protective low-voltage fixed distribution cabinet according to claim 5, characterized in that: The front surfaces of the two brackets (102) are in contact with the surface of the cabinet door (105), and the four protective plates (107) are divided into two groups. Each group of protective plates (107) is movably connected to the inside of the two grooves of each double groove bar (108).
7. The protective low-voltage fixed distribution cabinet according to claim 6, characterized in that: The bottom of the back panel (104), the bottom of the cabinet door (105) and the bottoms of the two side panels (103) are all in contact with the top of the base (101), and the top of the back panel (104), the top of the cabinet door (105) and the tops of the two side panels (103) are all in contact with the bottom of the top panel (106).
8. The protective low-voltage fixed power distribution cabinet according to claim 7, characterized in that: The gas outlet end of the three-way pipe (207) is fixedly passed through the surface of the back plate (104), the flame sensor (212) is installed on the surface of the back plate (104), and the detection end of the flame sensor (212) is movable passed through the surface of the back plate (104).
9. The protective low-voltage fixed power distribution cabinet according to claim 8, characterized in that: The front surface of the auxiliary shell (201) is fixed to the surface of the back plate (104), the front surface of the fireproof plate (214) is in contact with the surface of the back plate (104), and the air inlet end of the other auxiliary pipe (210) is fixed and passes through one side of the other side plate (103).
10. A protection method for a protective low-voltage fixed distribution cabinet, characterized in that: The protective low-voltage fixed distribution cabinet according to claim 9 is used, comprising the following steps: S1. When it is necessary to assemble the components of the power distribution cabinet body (1), first install the two brackets (102) with the base (101), then install the two sets of protective plates (107) with the two brackets (102), then install the two side panels (103) with the two brackets (102), then hinge the cabinet door (105) with one of the side panels (103), then install the back panel (104) with the two brackets (102), then install the two double-slot bars (108) with the two side panels (103), then install the top panel (106) with the two brackets (102), and then install the two mounting brackets (109) on the two double-slot bars (108). S2. When the power distribution cabinet body (1) is used, the shell cover (217) is opened first, and activated carbon particles and aluminosilicate particles are placed in the two porous shells (216), respectively. Then, the mounting plate (202) is opened, and the controller (211) is connected to the external power supply. Then, the valve of the manual valve (204) is opened. Then, the controller (211) and the flame sensor (212) are used to monitor the interior of the power distribution cabinet body (1). When a fire occurs in the interior of the power distribution cabinet body (1), the heat dissipation holes in the interior of the power distribution cabinet body (1) are blocked by using the controller (211), the auxiliary shell (201), the electric push rod (213) and the fireproof plate (214). S3, then using the cooperation of the controller (211), the manual valve (204), the two connecting pipes (206), the first electric valve (205), the three-way pipe (207) and the nozzle (218), the carbon dioxide in the high-pressure cylinder (203) is transported to the interior of the distribution cabinet body (1), and the fire extinguishing operation is performed therein. When the fire extinguishing operation is completed inside the distribution cabinet body (1), the first electric valve (205) is directly closed by using the controller (211). Then, using the cooperation of the controller (211), the auxiliary shell (201), the fan (209), one of the auxiliary pipes (210), the three-way pipe (207), the second electric valve (208) and the nozzle (218), the cold air in the environment is transported to the interior of the distribution cabinet body (1), and the temperature is lowered therein; S4. When the cooling operation is completed inside the power distribution cabinet body (1), the gas inside the power distribution cabinet body (1) is first transported to the inside of the processing shell (215) by using the cooperation of the controller (211), the third electric valve (219) and another auxiliary pipe (210). Then, the harmful gas transported to the inside of the processing shell (215) is treated by using the cooperation of the shell cover (217) and the activated carbon particles and the aluminosilicate particles inside the two porous shells (216). Then, the other gases transported to the inside of the processing shell (215) are transported to the environment by using the cooperation of the one-way valve (220). When the harmful gas inside the power distribution cabinet body (1) is completely treated, the second electric valve (208), the fan (209) and the third electric valve (219) are closed by using the controller (211). Then, the fireproof plate (214) is reset to its original position by using the cooperation of the controller (211), the electric push rod (213) and the auxiliary shell (201).