Power distribution cabinet with automatic fire extinguishing function

Abstract

The power distribution cabinet with the automatic fire extinguishing function comprises a cabinet body and a moving plate, the upper surface of the cabinet body is fixedly connected with a protective shell, an air storage tank is fixedly connected in the protective shell, air outlet pipes at the two ends of the air storage tank are communicated with a flow dividing groove formed in the upper surface of the cabinet body, and air spraying holes are symmetrically formed in the bottom of the flow dividing groove. Meanwhile, exhaust holes are symmetrically formed in the bottom in the cabinet body, the movable plate is slidably connected to the side face in the cabinet body through a limiting plate, vent grooves are correspondingly formed in the positions, opposite to the heat dissipation grooves, of the surface of the movable plate, through holes are formed in the side face of the limiting plate, and limiting rods are slidably connected into the through holes through sleeved second springs. Through cooperation of the movable plate, the limiting plate, the limiting rod, the guide rod, the third spring and the transverse plate, when a fire occurs in the cabinet body, the movable plate can move under the action of the gas storage tank, then the heat dissipation grooves of the cabinet body are closed, a closed area can be formed in the cabinet body, and therefore the fire behavior is effectively controlled, and the fire extinguishing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power distribution cabinets, in particular to a power distribution cabinet with an automatic fire extinguishing function. Background Art

[0002] The distribution cabinet is divided into power distribution cabinet, lighting distribution cabinet and metering cabinet. It is the terminal equipment of the distribution system. The distribution cabinet is a general term for the motor control center. The distribution cabinet is used in the occasions with dispersed load and fewer circuits, and the motor control center is used in the occasions with concentrated load and more circuits. At present, the existing distribution cabinet will continuously generate heat during the use of its internal electronic components. Although the existing distribution cabinet is equipped with a heat dissipation port, when the heat emitted by the electronic components is greater than the heat discharged by the heat dissipation port, a large amount of heat will be accumulated inside the distribution cabinet, and this heat will cause the internal electronic components to short-circuit, which can easily cause fire accidents, not only bringing economic losses to the government, but also bringing safety hazards to the surrounding residents.

[0003] After searching, a power distribution cabinet with automatic fire extinguishing function disclosed in the prior art (application number: CN201920971377.X) records that "the inner wall of the front of the cabinet is fixedly installed with an electronic component body, the top of the cabinet is fixedly installed with a top box, the top of the top box is fixedly installed with a top plate, the back of the cabinet is fixedly installed with a back box, the back of the back box is fixedly installed with a single-chip computer body, the back of the back box is fixedly installed with a controller located on the right side of the single-chip computer body, the top of the top box is fixedly installed with a dry powder fire extinguisher, the bottom of the dry powder fire extinguisher is fixedly installed with a solenoid valve, the bottom of the solenoid valve is fixedly connected with a through pipe, the other end of the through pipe passes through the top box and the cabinet in turn and extends to the interior of the cabinet, and both sides of the top of the cabinet inner cavity are A smoke sensor is fixedly installed. "; The power distribution cabinet detects smoke inside the cabinet through the smoke sensor. If a fire occurs inside the cabinet, the smoke sensor will transmit a signal to the single-chip microcomputer body, and the single-chip microcomputer body will transmit the signal to the controller. The controller will control the operation of the dual-axis motor, so that the shaft drives the baffle to rotate and the heat dissipation port body is blocked, thereby forming a closed state for the cabinet, isolating the external oxygen, so that the fire source can be effectively controlled, thereby enhancing the fire extinguishing ability of the power distribution cabinet. However, when a fire occurs in the power distribution cabinet, it is very easy to have a power failure problem, and then the dual-axis motor will be unable to start due to power failure, and then the cabinet cannot be closed, and the external oxygen can flow into the cabinet, so that the fire cannot be effectively controlled, and the fire cannot be quickly extinguished. Utility Model Content

[0004] In order to overcome the defects of the prior art, a power distribution cabinet with an automatic fire extinguishing function is provided to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, a power distribution cabinet with automatic fire extinguishing function is provided, comprising: a cabinet body and a movable plate, a cabinet door is hinged on the front of the cabinet body, and a PLC control component is fixedly connected to the upper surface of the cabinet body through a groove, and a smoke sensor is fixedly connected to the top of the cabinet body, and heat dissipation grooves are symmetrically arranged on both sides of the cabinet body, and the upper surface of the cabinet body is fixedly connected to a protective shell, and a gas storage tank is fixedly connected inside the protective shell, and the outlet pipes at both ends of the gas storage tank are connected to the diversion groove arranged on the upper surface of the cabinet body, and the bottom of the diversion groove is symmetrically arranged with jet holes, and the bottom of the cabinet body is symmetrically arranged with exhaust holes, and The lower surface of the cabinet is movably connected to the sealing plate through a spring 1, and the movable plate is slidably connected to the side surface of the cabinet through a limit plate, and a ventilation groove is provided on the surface of the movable plate corresponding to the position of the heat dissipation groove, and a through hole is provided on the side of the limit plate, the limit rod is slidably connected in the through hole through a sleeved spring 2, and a limit hole is provided on the side of the movable plate corresponding to the position of the limit rod, and at the same time, the lower surface of the movable plate is symmetrically connected to the upper end of the guide rod, and the lower end of the guide rod is slidably connected to the through hole provided in the horizontal plate, the upper end of the guide rod is sleeved with a spring 3, and the horizontal plate is fixedly connected to the lower end of the side surface of the cabinet.

[0006] Preferably, a plurality of exhaust holes are arranged in parallel and at equal intervals at the bottom of the cabinet, and the plurality of exhaust holes are combined together to form a square distribution, and a plurality of grooves are arranged in parallel and at equal intervals on the lower surface of the cabinet, the upper end of spring one is fixedly connected in the groove, and the lower end of spring one is fixedly connected to the sealing plate.

[0007] Preferably, the sealing plate has a square structure, and an installation groove is provided at the edge of the upper surface of the sealing plate. The sealing gasket fixedly connected in the installation groove has a U-shaped structure, and the upper surface of the sealing gasket fits the lower surface of the cabinet. At the same time, multiple groups of weight-reducing grooves are evenly provided on the lower surface of the sealing plate, and the weight-reducing grooves have a square structure.

[0008] Preferably, the protective shell fixedly connected to the upper surface of the cabinet has a U-shaped structure, and two sets of main positioning plates are fixedly connected on both sides of the protective shell. Both sets of main positioning plates have a concave structure, and the auxiliary positioning plate fixedly connected to the top of the protective shell has an equilateral triangle structure. At the same time, the groove of the main positioning plate and the inclined surface of the auxiliary positioning plate have an arc-shaped structure.

[0009] Preferably, the two groups of flow grooves symmetrically opened on the upper surface of the cabinet are both in the form of long strips, the upper opening of the flow groove is fixedly connected to the closing plate, and a plurality of groups of jet holes are opened at parallel and equidistant intervals at the bottom of the flow groove, the jet holes are in the form of a truncated cone, and an impact groove is opened at the position of the upper surface of the movable plate relative to the jet hole, and the impact groove is in the form of a spherical structure.

[0010] Preferably, the movable plate is in an L-shaped structure, and the ventilation grooves opened on the surface of the movable plate are in an elongated strip structure, the opening sizes of the ventilation grooves and the heat dissipation grooves are matched, and the upper surface of the movable plate is fixedly connected to the metal plate through a groove, and a fixed groove is opened at a position corresponding to the metal plate at the top of the cabinet, and the electromagnet is fixedly connected in the fixed groove.

[0011] Preferably, two sets of limit plates are symmetrically connected to the side surfaces on both sides of the cabinet body, the cross-sections of the four sets of limit plates are all L-shaped, and the inner surfaces of the limit plates fit the surface of the movable plate, while the cross-section of the limit rod shaft to which the limit plates are slidably connected is T-shaped, and at the same time, the two ends of the second spring are respectively fixedly connected to the protruding end of the limit rod and the outer side surface of the limit plate.

[0012] Compared with the prior art, the beneficial effect of the utility model is as follows: through the cooperation of the smoke sensor, PLC control component, electromagnet, solenoid valve, diversion groove, jet hole and gas storage tank, when a fire occurs in the cabinet, the inert gas in the gas storage tank can be sprayed into the cabinet, and the inert gas will push the movable plate downward during the spraying process, so that the movable plate can close the heat dissipation groove, so that the inner cavity of the cabinet can form a closed environment, thereby isolating the external oxygen, effectively controlling the fire in the cabinet, and combined with the inert gas, it can subsequently improve the efficiency of fire extinguishing and reduce the loss of the distribution cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front view schematic diagram of an embodiment of the utility model.

[0014] Figure 2 It is a side view schematic diagram of an embodiment of the utility model.

[0015] Figure 3 It is a top view schematic diagram of an embodiment of the utility model.

[0016] Figure 4 It is a schematic diagram of the cross-sectional structure of the movable plate of an embodiment of the utility model.

[0017] In the figure: 1. Protective shell; 2. Gas tank; 3. Closing plate; 4. Diverter slot; 5. Electromagnet; 6. Smoke sensor; 7. Moving plate; 8. Cabinet; 9. Ventilation slot; 10. Heat dissipation slot; 11. Limiting plate; 12. Guide rod; 13. Horizontal plate; 14. Sealing pad; 15. Sealing plate; 16. Exhaust hole; 17. Limiting rod; 18. PLC control component. DETAILED DESCRIPTION

[0018] Reference Figures 1 to 4As shown, the utility model provides a power distribution cabinet with automatic fire extinguishing function, including: a cabinet body 8 and a movable plate 7, a cabinet door is hinged on the front of the cabinet body 8, and the upper surface of the cabinet body 8 is fixedly connected to the PLC control component 18 through a groove, and the top of the cabinet body 8 is fixedly connected to the smoke sensor 6, and at the same time, heat dissipation grooves 10 are symmetrically opened on both sides of the cabinet body 8, the upper surface of the cabinet body 8 is fixedly connected to the protective shell 1, and the protective shell 1 is fixedly connected to the gas storage tank 2, and the outlet pipes at both ends of the gas storage tank 2 are connected to the diverter groove 4 opened on the upper surface of the cabinet body 8, and the bottom of the diverter groove 4 is symmetrically opened with jet holes, and at the same time, the bottom of the cabinet body 8 is symmetrically opened with exhaust holes 16, and the bottom of the cabinet body 8 The surface is movably connected to the sealing plate 15 through a spring 1, and the movable plate 7 is slidably connected to the side surface inside the cabinet 8 through a limit plate 11, and a ventilation groove 9 is opened corresponding to the position of the surface of the movable plate 7 relative to the heat dissipation groove 10, and a through hole is opened on the side of the limit plate 11, and the limit rod 17 is slidably connected in the through hole through a sleeved spring 2, and a limit hole is opened on the side of the movable plate 7 corresponding to the position of the limit rod 17, and at the same time, the lower surface of the movable plate 7 is symmetrically connected to the upper end of the guide rod 12, and the lower end of the guide rod 12 is slidably connected to the through hole opened in the cross plate 13, the upper end of the guide rod 12 is sleeved with spring 3, and the cross plate 13 is fixedly connected to the lower end of the inner side surface of the cabinet 8.

[0019] In the present embodiment, when a fire occurs in the cabinet 8, the smoke sensor 6 detects the smoke generated by the fire, and then the smoke sensor 6 transmits a signal to the PLC control component 18. The PLC control component 18 first disconnects the power supply of the electromagnet 5, and then opens the solenoid valves at both ends of the gas tank 2, so that the inert gas in the gas tank 2 can flow into the diverter groove 4 through the gas outlet pipe, and the inert gas is sprayed into the cabinet 8 from the jet hole at the bottom of the diverter groove 4. In addition, during the inert gas injection process, the high-pressure gas will push the movable plate 7 to move downward, so that the movable plate 7 drives the guide rod 12 to move downward, and the spring three is squeezed. Moreover, when the limiting hole opened on the side of the movable plate 7 is opposite to the limiting rod 17, the limiting rod 17 is embedded in the limiting hole under the action of the stretched spring 2, thereby completing the fixation of the movable plate 7 and the limiting plate 11, ensuring that the movable plate 7 can complete the sealing The heat dissipation groove 10 opened on the side of the closed cabinet 8 makes the interior of the cabinet 8 form a sealed environment, effectively controlling the fire in the cabinet 8. In the process of continuous injection of the inert gas in the gas tank 2 into the cabinet 8, the air pressure in the cabinet 8 gradually increases, and then the gas in the cabinet 8 can push the sealing plate 15 to move through the exhaust hole 16. The sealing plate 15 can simultaneously stretch the spring 1, so that the original gas in the cabinet 8 is discharged from the bottom of the cabinet 8, thereby further increasing the content of the inert gas in the cabinet 8, thereby improving the fire extinguishing efficiency of the distribution cabinet and reducing the loss of the distribution cabinet. At the same time, the electromagnet 5, the solenoid valve and the smoke sensor 6 are electrically connected to the PLC control component 18 respectively, and the PLC control component 18 is built-in with an independent power supply, and the controller model of the PLC control component 18 can adopt STM32F103VBT6.

[0020] As a preferred embodiment, multiple groups of exhaust holes 16 are opened at parallel and equal intervals at the bottom of the cabinet 8, and the multiple groups of exhaust holes 16 are combined together to form a square distribution, and multiple groups of grooves are opened at parallel and equal intervals on the lower surface of the cabinet 8, the upper end of the spring one is fixedly connected in the groove, and the lower end of the spring one is fixedly connected to the sealing plate 15.

[0021] In this embodiment, if Figure 1 and Figure 3 The exhaust holes 16 evenly arranged in the cabinet 8 enable the gas in the cabinet 8 to be discharged through the exhaust holes 16 when the inert gas in the gas storage tank 2 is injected into the cabinet 8, thereby effectively increasing the inert gas content in the cabinet 8 and quickly reducing the oxygen content in the cabinet 8, thereby helping to improve the fire extinguishing efficiency of the distribution cabinet.

[0022] As a preferred embodiment, the sealing plate 15 has a square structure, and an installation groove is opened at the edge of the upper surface of the sealing plate 15. The sealing gasket 14 fixedly connected in the installation groove has a U-shaped structure, and the upper surface of the sealing gasket 14 fits the lower surface of the cabinet 8. At the same time, a plurality of groups of weight-reducing grooves are evenly opened on the lower surface of the sealing plate 15, and the weight-reducing grooves have a square structure.

[0023] In this embodiment, if Figure 1 and Figure 3 The sealing gasket 14 is made of soft rubber material, which can help enhance the sealing performance of the connection between the upper surface of the sealing plate 15 and the lower surface of the cabinet 8. Therefore, when the air pressure in the gas storage tank 2 is balanced with the air pressure in the cabinet 8, it can prevent external oxygen from flowing into the cabinet 8 from the exhaust hole 16, thereby reducing the probability of fire rekindling in the cabinet 8. The setting of the weight-reducing groove can reduce the weight of the sealing plate 15, thereby extending the service life of the spring.

[0024] As a preferred embodiment, the protective shell 1 fixedly connected to the upper surface of the cabinet 8 has a U-shaped structure, and two sets of main positioning plates are fixedly connected on both sides of the protective shell 1. Both sets of main positioning plates have a concave structure, and the auxiliary positioning plate fixedly connected to the top of the protective shell 1 has an equilateral triangle structure. At the same time, the groove of the main positioning plate and the inclined surface of the auxiliary positioning plate are both arc-shaped structures.

[0025] In this embodiment, if Figure 1 and Figure 2 The outer side of the protective shell 1 is made of white opaque material, which can effectively reduce the speed of heat accumulation inside the protective shell 1, avoid excessive heating of the gas tank 2, and ensure the overall safety of the distribution cabinet. At the same time, the setting of the main positioning plate and the auxiliary positioning plate can enhance the stability of the gas tank 2 fixed in the protective shell 1.

[0026] As a preferred embodiment, the two groups of flow grooves 4 symmetrically opened on the upper surface of the cabinet 8 are both in the form of long strips. The upper opening of the diverter groove 4 is fixedly connected to the closing plate 3, and a plurality of jet holes are opened at the bottom of the diverter groove 4 in parallel and at equal intervals. The jet holes are in the form of a truncated cone, and an impact groove is opened on the upper surface of the movable plate 7 corresponding to the position of the jet hole, and the impact groove is in the form of a spherical structure.

[0027] In this embodiment, if Figure 1 , Figure 2 and Figure 4 The structural setting of the jet hole can help enhance the impact force of the inert gas injected into the cabinet 8, and then with the cooperation of the impact groove, it can help enhance the effect of the inert gas pushing the movable plate 7 downward, so that the movable plate 7 can smoothly close the heat dissipation groove 10, ensuring that the interior of the cabinet 8 can form a closed environment, isolating the oxygen from the outside, and effectively controlling the fire in the cabinet 8.

[0028] As a preferred embodiment, the movable plate 7 is L-shaped, and the ventilation groove 9 opened on the surface of the movable plate 7 is an elongated strip structure. The opening sizes of the ventilation groove 9 and the heat dissipation groove 10 are adapted to each other, and the upper surface of the movable plate 7 is fixedly connected to the metal plate through a groove, and a fixed groove is opened at the top of the cabinet 8 relative to the metal plate, and the electromagnet 5 is fixedly connected in the fixed groove.

[0029] In this embodiment, if Figure 1 , Figure 2 and Figure 4 The opening sizes of the ventilation groove 9 and the heat dissipation groove 10 are matched, thereby ensuring that the power distribution cabinet can perform normal heat dissipation, and the electromagnet 5 can be fixedly connected to the moving plate 7 by the adsorption metal plate, thereby effectively extending the service life of the spring three.

[0030] As a preferred embodiment, two groups of limit plates 11 are symmetrically connected to the side surfaces on both sides of the cabinet 8, and the cross-sections of the four groups of limit plates 11 are all L-shaped structures. The inner surfaces of the limit plates 11 fit the surface of the movable plate 7, and the axial cross-section of the limit rod 17 to which the limit plates 11 are slidably connected is T-shaped. At the same time, the two ends of the spring 2 are respectively fixedly connected to the protruding ends of the limit rod 17 and the outer side surfaces of the limit plates 11.

[0031] In this embodiment, if Figure 2 , Figure 3 and Figure 4 The end of the limiting rod 17 close to the movable plate 7 is in a truncated cone structure, which can reduce the difficulty of embedding the limiting rod 17 into the limiting hole. Moreover, the setting of the limiting plate 11 enables the movable plate 7 to move in contact with the inner side of the cabinet 8, thereby enhancing the sealing effect of the movable plate 7 on the heat dissipation groove 10.

[0032] The power distribution cabinet with automatic fire extinguishing function of the utility model cooperates with the movable plate 7, the limit plate 11, the limit rod 17, the guide rod 12, the spring three and the cross plate 13, so that when a fire occurs in the cabinet 8, the movable plate 7 can move under the action of the gas sprayed from the gas storage tank 2, and then close the heat dissipation slot 10 of the cabinet 8, so that the interior of the cabinet 8 can form a closed area, thereby effectively controlling the fire, and as the inert gas content in the cabinet 8 continues to increase, the efficiency of fire extinguishing can be effectively improved, thereby reducing the loss of the power distribution cabinet.

Claims

1. A power distribution cabinet with automatic fire extinguishing function, comprising: Cabinet body (8) and movable plate (7). The front of the cabinet body (8) is hinged with a cabinet door. The upper surface of the cabinet body (8) is fixedly connected with a PLC control component (18) through a groove. A smoke sensor (6) is fixedly connected to the top inside the cabinet body (8). At the same time, heat dissipation slots (10) are symmetrically opened on both sides of the cabinet body (8). It is characterized in that: A protective shell (1) is fixedly connected to the upper surface of the cabinet body (8). An air storage tank (2) is fixedly connected inside the protective shell (1). The air outlet pipes at both ends of the air storage tank (2) are communicated with a diversion slot (4) opened on the upper surface of the cabinet body (8). The bottom of the diversion slot (4) is symmetrically provided with air injection holes. At the same time, exhaust holes (16) are symmetrically opened at the bottom inside the cabinet body (8). The lower surface of the cabinet body (8) is movably connected with a sealing plate (15) through a first spring. The movable plate (7) is slidably connected to the side inside the cabinet body (8) through a limiting plate (11). Ventilation slots (9) are correspondingly opened on the surface of the movable plate (7) at positions corresponding to the heat dissipation slots (10). A through hole is opened on the side of the limiting plate (11). A limiting rod (17) is slidably connected inside the through hole through a second spring sleeved thereon. Limiting holes are correspondingly opened on the side of the movable plate (7) at positions corresponding to the limiting rod (17). At the same time, the upper ends of guide rods (12) are symmetrically connected to the lower surface of the movable plate (7). The lower ends of the guide rods (12) are slidably connected to through holes opened in a cross plate (13). A third spring is sleeved on the upper ends of the guide rods (12). The cross plate (13) is fixedly connected to the lower end of the inner side surface of the cabinet body (8).

2. A power distribution cabinet with automatic fire extinguishing function according to claim 1, characterized in that: Multiple groups of exhaust holes (16) are opened at the bottom inside the cabinet body (8) in parallel and at equal intervals. The multiple groups of exhaust holes (16) are combined together and distributed in a square shape. Multiple groups of grooves are opened on the lower surface of the cabinet body (8) in parallel and at equal intervals. The upper ends of first springs are fixedly connected inside the grooves. The lower ends of the first springs are fixedly connected to the sealing plate (15).

3. The power distribution cabinet with automatic fire extinguishing function according to claim 1, characterized in that: The sealing plate (15) has a square structure. An installation groove is opened at the edge of the upper surface of the sealing plate (15). A sealing gasket (14) fixedly connected inside the installation groove has a square structure. The upper surface of the sealing gasket (14) is attached to the lower surface of the cabinet body (8). At the same time, multiple groups of weight reduction grooves are evenly opened on the lower surface of the sealing plate (15). The weight reduction grooves have a square structure.

4. A power distribution cabinet with automatic fire extinguishing function according to claim 1, characterized in that: The protective shell (1) fixedly connected to the upper surface of the cabinet body (8) has an inverted U-shaped structure. Two groups of main positioning plates are fixedly connected to both sides of the protective shell (1). Both groups of main positioning plates have a concave structure. The auxiliary positioning plate fixedly connected to the top of the protective shell (1) has an equilateral triangle structure. At the same time, the grooves of the main positioning plates and the inclined surfaces of the auxiliary positioning plates are both arc-shaped structures.

5. The power distribution cabinet with automatic fire extinguishing function according to claim 1, characterized in that: Two groups of diversion slots (4) symmetrically opened on the upper surface of the cabinet body (8) both have a long strip structure. A closing plate (3) is fixedly connected to the opening at the upper end of the diversion slot (4). Multiple groups of air injection holes are opened at the bottom of the diversion slot (4) in parallel and at equal intervals. The air injection holes have a frustum of a cone structure. Impact grooves are correspondingly opened on the upper surface of the movable plate (7) at positions corresponding to the air injection holes. At the same time, the impact grooves have a spherical structure.

6. A power distribution cabinet with automatic fire extinguishing function according to claim 1, characterized in that: The movable plate (7) is in an L-shaped structure, and the ventilation groove (9) provided on the surface of the movable plate (7) is in an elongated strip structure. The opening sizes of the ventilation groove (9) and the heat dissipation groove (10) are matched. The upper surface of the movable plate (7) is fixedly connected to the metal plate via a groove, and a fixing groove is provided at a position corresponding to the metal plate at the top of the cabinet (8), and the electromagnet (5) is fixedly connected in the fixing groove.

7. The power distribution cabinet with automatic fire extinguishing function according to claim 1, characterized in that: The two side surfaces inside the cabinet (8) are symmetrically connected to two groups of limit plates (11), the cross-sections of the four groups of limit plates (11) are all L-shaped structures, and the inner surfaces of the limit plates (11) fit the surface of the movable plate (7), while the axial cross-section of the limit rod (17) slidably connected to the limit plates (11) is T-shaped, and at the same time, the two ends of the second spring are respectively fixedly connected to the protruding end of the limit rod (17) and the outer side surface of the limit plate (11).

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