Emergency protection device for power distribution cabinet

Abstract

The invention discloses an emergency protection device for a power distribution cabinet, which comprises a cabinet body and an equipment box, and is characterized in that the equipment box is arranged at the bottom end of the cabinet body; a filter pipe and a fan are arranged in the equipment box, the output end of the filter pipe is communicated with the input end of the fan, and a filter element is arranged in the filter pipe; the cabinet body is internally provided with a gas bin, the gas bin is communicated with the filter pipe, the surface of the gas bin is provided with a plurality of joint pipes, and the joint of each joint pipe and the gas bin is provided with an electromagnetic valve; a plurality of air suction pipes are arranged in the cabinet body, the output end of each air suction pipe is connected with a connector pipe, and a temperature sensor and a smoke sensor are embedded in the surface of each air suction pipe. The effect of rapidly eliminating flames is achieved through rapid flowing of airflow, the effect of restraining fire reburning is achieved by comprehensively discharging air in the cabinet body, the emergency fire extinguishing response speed is high, fire restraining is more comprehensive and thorough, and the reburning rate is lower.

Description

Technical Field

[0001] The invention relates to the technical field of power distribution cabinets, and in particular to an emergency protection device for a power distribution cabinet. Background Art

[0002] As a key component of the power distribution system, the power distribution cabinet plays a vital role. It is not only responsible for the distribution of electricity and the control of circuits, but also provides functions such as electrical protection, fire monitoring and environmental monitoring. Thanks to its compact size, excellent safety performance and strong practicality, the power distribution cabinet is widely deployed in a variety of environments such as residential houses, educational institutions, medical institutions, corporate factories and production workshops.

[0003] When the circuits inside the distribution cabinet are short-circuited, overloaded, or the contact resistance is too high, a lot of heat will be generated, which may cause fires in the internal circuits and electrical equipment, and then cause distribution network failures. If the fire is not controlled in time, the speed of the fire spread will be accelerated, which may cause more serious property losses and even endanger people's lives. Therefore, the emergency protection measures of the distribution cabinet should not only be able to quickly cut off the power supply at critical moments, but also immediately implement emergency protection measures to contain the fire when an accidental fire occurs. This is not only to protect people's lives and property, but also to ensure the stable operation of the distribution network.

[0004] Since the distribution cabinet is a closed box structure, once a fire occurs inside, it is difficult for outsiders to discover it in time, which will not only miss the best time to extinguish the fire, but also cause the fire to spread rapidly. When the repair personnel arrive at the distribution cabinet where the fire has caught fire, if the cabinet door is suddenly opened, the outside air will rush in quickly, increasing the internal oxygen concentration, which may cause a deflagration and pose a safety threat to the repair personnel. However, if the cabinet door is opened late, the internal fire cannot be effectively controlled in time, which will aggravate the fire, cause more serious property losses, and prolong the repair time.

[0005] In the prior art, for example, a Chinese patent with publication number CN213937013U discloses a power distribution cabinet with an automatic fire extinguishing function. By providing a first-level fire extinguishing mechanism, when the power distribution cabinet body is burning, the smoke detector transmits a signal to the electric control valve and the micro pump. After the micro pump is started, suction is generated, and the air inside the power distribution cabinet body is evacuated through the exhaust pipe, so that the oxygen inside the power distribution cabinet body disappears, thereby playing a role in extinguishing the fire. The air extracted by the exhaust pipe is discharged into the air storage box through the exhaust pipe, driving the piston plate to move downward, and then the carbon dioxide gas in the piston plate is pushed into the bottom partition through the gas pipe, and flows into the power distribution cabinet body through the flow pipes on both sides of the bottom partition, further achieving the effect of fire extinguishing.

[0006] In the prior art, the air in the distribution cabinet is extracted to reduce the oxygen content therein, so that the flame is extinguished due to lack of oxygen, thereby achieving the fire extinguishing effect. However, if the internal space of the distribution cabinet is large, it takes a certain amount of time to fully extract the air, and the fire will gradually expand during this period, which makes it impossible to quickly and effectively suppress the fire in the early stage. Therefore, for the emergency situation of fire inside the distribution cabinet, there is a lack of emergency protection measures that can quickly take fire extinguishing measures. Summary of the invention

[0007] The purpose of the present invention is to provide an emergency protection device for a power distribution cabinet to solve the problems raised in the above background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: an emergency protection device for a power distribution cabinet, comprising a cabinet body and an equipment box, wherein the equipment box is arranged at the bottom end of the cabinet body;

[0009] A filter tube and a fan are arranged inside the equipment box, the output end of the filter tube is connected to the input end of the fan, and a filter element is arranged inside the filter tube;

[0010] An air bin is arranged inside the cabinet, the air bin is connected to the filter tube, and a plurality of joint tubes are arranged on the surface of the air bin;

[0011] A plurality of air intake pipes are arranged inside the cabinet, a solenoid valve is arranged at the connection between each of the air intake pipes and the joint pipe, and a temperature sensor and a smoke sensor are embedded and installed on the surface of each of the air intake pipes.

[0012] Preferably, a plurality of mounting frames are provided inside the cabinet, and the plurality of air intake pipes are all connected to the surface of the mounting frames.

[0013] Preferably, an electric air valve is provided at the inner top of the cabinet, and one end of the electric air valve passes through the outer wall of the cabinet.

[0014] Preferably, a battery is provided inside the equipment box.

[0015] Preferably, a power switching module is provided inside the equipment box, and the power switching module is connected to the power supply and the battery respectively.

[0016] Preferably, a controller is provided inside the equipment box;

[0017] The controller is electrically connected to the electric air valve, the power switching module, the fan, a plurality of temperature sensors, a plurality of smoke sensors and a plurality of solenoid valves respectively.

[0018] Preferably, an end cover is rotatably mounted on one end of the filter tube away from the fan, and the end cover passes through the surface of the cabinet.

[0019] Preferably, the filter tube, filter element, air intake pipe and air chamber are all made of non-combustible materials.

[0020] Preferably, a cabinet door is rotatably mounted inside one side of the cabinet body, and a sealing strip is attached to the edge of the surface of the cabinet door facing the cabinet body.

[0021] Preferably, a plurality of wire holes are provided on the top surface of the cabinet, and a sealing ring is embedded and installed inside each wire hole.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention achieves the effect of quickly extinguishing the flame around the electrical components by arranging the suction pipe and the fan. The suction pipe can be positioned and installed behind the electrical components. The suction pipe can quickly extract the air in the space where the electrical components are located through the negative pressure generated by the fan. The airflow generated by the rapid flow of air can extinguish the flame around the electrical components, thereby achieving the effect of quickly eliminating the flame. The fan is used to continuously extract the air in the cabinet to further reduce the oxygen content in the cabinet, thereby achieving the effect of suppressing the re-ignition of the fire. Not only is the emergency fire extinguishing response speed fast, but the fire suppression is also more comprehensive and thorough.

[0024] 2. The present invention achieves the effect of filtering combustion smoke by setting a filter tube. When the fan draws out the air inside the cabinet, the filter element adsorbs toxic and harmful particles in the extracted smoke, avoiding the negative impact of direct smoke discharge on the environment and the health of emergency repair personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the internal structure of the cabinet in the first embodiment of the present invention;

[0026] Figure 2 This is a schematic diagram of the main cross-sectional structure of the cabinet in the first embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the partial appearance structure of the air intake pipe in the first embodiment of the present invention;

[0028] Figure 4 This is a schematic diagram of the internal structure of the equipment box in the first embodiment of the present invention;

[0029] Figure 5 This is a schematic diagram of the main cross-sectional structure of the filter tube in the first embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the appearance structure of a cabinet in Embodiment 1 of the present invention.

[0031] In the figure:

[0032] 100, cabinet body; 110, cabinet door; 120, wire hole; 130, mounting frame; 140, electric air valve;

[0033] 200, equipment box; 210, battery; 220, power switching module; 230, controller; 240, filter tube; 241, end cover; 242, filter element; 250, fan;

[0034] 300, air intake pipe; 310, temperature sensor; 320, smoke sensor;

[0035] 400, gas chamber; 410, connecting pipe; 411, solenoid valve. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] See also Figures 1 to 6 , the present invention provides the following two embodiments:

[0038] Embodiment 1:

[0039] See also Figure 1 An emergency protection device for a power distribution cabinet includes a cabinet body 100 and an equipment box 200 , wherein the equipment box 200 is arranged at the bottom end of the cabinet body 100 .

[0040] See also Figure 1 and Figure 2 A plurality of mounting frames 130 are disposed inside the cabinet 100 , and a plurality of air intake pipes 300 are disposed inside the cabinet 100 . The plurality of air intake pipes 300 are all connected to the surface of the mounting frames 130 .

[0041] See also Figure 3 A temperature sensor 310 and a smoke sensor 320 are embedded and installed on the surface of each air intake pipe 300 .

[0042] The temperature sensor 310 is used to perform real-time detection of the temperature of the area where the intake pipe 300 is located, and the smoke sensor 320 performs real-time detection of whether there is smoke in the area where the intake pipe 300 is located. When the temperature detected by the temperature sensor 310 exceeds the set fire temperature range, the controller 230 sends a high temperature signal, and after the smoke sensor 320 detects smoke, the controller 230 sends a smoke generation signal. The controller 230 uploads the signal to the control center through the distribution cabinet Internet of Things network, indicating that a fire has occurred in the distribution cabinet and that emergency repair personnel need to be dispatched urgently.

[0043] See also Figure 1 , Figure 2 and Figure 4 , an air bin 400 is arranged inside the cabinet 100, the air bin 400 is connected to the filter tube 240, and a plurality of joint pipes 410 are arranged on the surface of the air bin 400, and a solenoid valve 411 is arranged at the connection between each suction pipe 300 and the joint pipe 410, and a plug is used to seal the inside of the joint pipe 410 that is not connected to the suction pipe 300, so as to reduce the usage of the solenoid valve 411, and the solenoid valve 411 can flexibly control the conduction state of each joint pipe 410. When the joint pipe 410 is connected to the suction pipe 300, the on-off state of the solenoid valve 411 at the corresponding position can be flexibly controlled by the controller 230, and the joint pipe 410 that is not connected to the suction pipe 300 can be closed by the solenoid valve 411, so as to achieve the effect of flexibly adjusting the connection position of the suction pipe 300 and the air bin 400, so that the installation position of the suction pipe 300 can be adaptively adjusted according to the installation position of the electrical components in the cabinet 100, and the flexibility of actual application is higher.

[0044] See also Figure 4 and Figure 5 , a filter tube 240 and a fan 250 are arranged inside the equipment box 200, the output end of the filter tube 240 is connected to the input end of the fan 250, and an exhaust port corresponding to the output end of the fan 250 is opened on the outer wall of the cabinet 100, and a protective net is arranged inside the exhaust port to prevent foreign debris from entering the fan 250. The fan 250 adopts a high-temperature resistant axial flow fan, which has the advantages of high temperature resistance and small size. When the value detected by the temperature sensor 310 exceeds the flame generation temperature, and the smoke sensor 320 detects smoke, the controller 230 controls the fan 250 to operate, and at the same time keeps the solenoid valve 411 connected to the suction pipe 300 open, and the negative pressure generated by the operation of the fan 250 quickly draws out the air inside the cabinet 100.

[0045] The air intake pipe 300 can be positioned and installed behind the electrical components. Through the negative pressure generated by the fan 250, the air intake pipe 300 can quickly extract the air in the space where the electrical components are located. The airflow generated by the rapid flow of air can extinguish the flames around the electrical components, achieving the effect of quickly eliminating the flames. The air in the cabinet 100 is continuously extracted with the fan 250, further reducing the oxygen content in the cabinet 100, achieving the effect of suppressing the re-ignition of the fire. Not only is the emergency fire extinguishing response speed fast, but the fire suppression is more comprehensive and thorough. At the same time, the airflow quickly passes through the fire location, and can also cool the fire point, so that the temperature of the combustibles at the fire point is reduced to below the ignition point, and the possibility of re-ignition is fully reduced.

[0046] See also Figure 5A filter element 242 is arranged inside the filter tube 240. The filter element 242 can filter the smoke mixed in the air during the air extraction process, so as to adsorb the toxic and harmful substances in the smoke and avoid the negative impact of direct smoke discharge on the environment and the health of maintenance personnel.

[0047] Second, see Figure 5 An end cover 241 is rotatably installed at one end of the filter tube 240 away from the fan 250. The end cover 241 passes through the surface of the cabinet 100. Through the connecting thread between the end cover 241 and the filter tube 240, the side of the filter tube 240 can be opened quickly and conveniently, making it easy for maintenance personnel to replace the filter element 242.

[0048] See also Figure 2 An electric air valve 140 is provided at the top of the interior of the cabinet 100, and one end of the electric air valve 140 passes through the outer wall of the cabinet 100. The electric air valve 140 is used to adjust the connectivity between the interior space of the cabinet 100 and the outside space. If the electrical components or circuits inside the cabinet 100 catch fire, the controller 230 controls the electric air valve 140 to close, isolate the interior space of the cabinet 100 from the outside space, prevent outside air from entering the interior of the cabinet 100, and cooperate with the fan 250 to fully extract the air inside the cabinet 100 to achieve the effect of oxygen-deficient fire extinguishing.

[0049] See also Figure 2 and Figure 4 A battery 210 is arranged inside the equipment box 200. The battery 210 is used as a backup power supply when a fire occurs inside the distribution cabinet and the power supply line is disconnected. That is, after a fire occurs inside the distribution cabinet, the power supply line is automatically disconnected. The battery 210 can also provide electrical energy to the fan 250, the controller 230, the solenoid valve 411 and the electric air valve 140.

[0050] See also Figure 2 and Figure 4 , a power switching module 220 is provided inside the equipment box 200, and the power switching module 220 is connected to the power supply and the battery 210 respectively. The power switching module 220 is used to achieve the effect of switching the power supply line. When the internal circuit of the power distribution cabinet operates normally, the power supply line in the power distribution cabinet directly supplies power to the electric damper 140, the controller 230, the fan 250, the multiple temperature sensors 310, the multiple smoke sensors 320 and the multiple solenoid valves 411. In addition, the power switching module 220 connects the power distribution cabinet circuit with the charging circuit of the battery 210 to charge the battery 210 and keep the battery 210 sufficiently charged.

[0051] When a fire occurs in the distribution cabinet, the power supply line of the distribution cabinet is automatically disconnected and the circuit connection is cut off. The power switching module 220 switches the power supply lines of the electric air valve 140, the controller 230, the fan 250, multiple temperature sensors 310, multiple smoke sensors 320 and multiple solenoid valves 411 to the battery 210. The battery 210 supplies power to them and they can still operate effectively when a fire occurs, thereby being able to cope with complex usage scenarios.

[0052] See also Figure 2 and Figure 4 A controller 230 is provided inside the equipment box 200. The controller 230 is electrically connected to the electric air valve 140, the power switching module 220, the fan 250, multiple temperature sensors 310, multiple smoke sensors 320 and multiple solenoid valves 411 respectively. The controller 230 is used for the operating status of electronic components in the entire emergency protection system, and the controller 230 adopts a PLC device. PLC belongs to the conventional and mature existing technology, which will not be elaborated here.

[0053] The filter tube 240, filter element 242, air intake pipe 300 and air chamber 400 are all made of non-combustible materials, specifically stainless steel, which not only has a certain rigidity but also has a non-combustible property, thereby achieving the purpose of preventing the spread of fire and the failure of emergency protection.

[0054] See also Figure 6 A cabinet door 110 is rotatably installed inside one side of the cabinet body 100, and a sealing strip is attached to the edge of the surface of the cabinet door 110 facing the cabinet body 100. A plurality of wire holes 120 are opened on the top surface of the cabinet body 100, and a sealing ring is embedded and installed inside each wire hole 120. The sealing strip can seal the gap between the cabinet door 110 and the cabinet body 100, and the sealing ring can seal the gap between the external line entering the cabinet body 100, so as to maintain the sealed state of the internal space of the cabinet body 100, thereby achieving a better oxygen-deficient fire extinguishing effect.

[0055] Embodiment 2:

[0056] Based on the contents disclosed in the above invention, another embodiment is proposed:

[0057] When there is no fire in the cabinet 100, the air intake pipes 300 are respectively installed behind the electrical components in the cabinet 100. The temperature of the electronic components is detected in real time by the temperature sensors 310 on the surface of the air intake pipes 300. If the temperature of the electronic components exceeds the set temperature, the controller 230 issues a heat dissipation instruction.

[0058] Cooling instructions include:

[0059] The electric air valve 140 is opened or the electric air valve 140 remains in the open state;

[0060] The electromagnetic valve 411 under the air intake pipe 300 where the temperature sensor 310 that detects the temperature exceeding the set temperature is opened, and the electromagnetic valves 411 under the other air intake pipes 300 are closed;

[0061] The fan 250 is running;

[0062] The operation of the fan 250 draws in the air around the overheated electrical component through the air intake pipe 300, speeding up the flow of air around the overheated electrical component, achieving the effect of dissipating heat for the overheated electrical component, and keeping the electrical component operating normally at a suitable temperature.

[0063] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An emergency protection device for a power distribution cabinet, characterized in that: It comprises a cabinet (100) and an equipment box (200), wherein the equipment box (200) is arranged at the bottom end of the cabinet (100); A filter tube (240) and a fan (250) are arranged inside the equipment box (200); an output end of the filter tube (240) is connected to an input end of the fan (250); and a filter element (242) is arranged inside the filter tube (240); An air bin (400) is disposed inside the cabinet (100), the air bin (400) is connected to the filter tube (240), and a plurality of joint tubes (410) are disposed on the surface of the air bin (400); A plurality of air intake pipes (300) are arranged inside the cabinet (100), a solenoid valve (411) is arranged at the connection between each of the air intake pipes (300) and the joint pipe (410), and a temperature sensor (310) and a smoke sensor (320) are embedded and installed on the surface of each of the air intake pipes (300).

2. The emergency protection device for a power distribution cabinet according to claim 1, characterized in that: A plurality of mounting frames (130) are arranged inside the cabinet (100), and the plurality of air intake pipes (300) are all connected to the surface of the mounting frames (130).

3. The emergency protection device for a power distribution cabinet according to claim 1, characterized in that: An electric air valve (140) is disposed at the inner top end of the cabinet (100), and one end of the electric air valve (140) passes through the outer wall of the cabinet (100).

4. The emergency protection device for a power distribution cabinet according to claim 1, characterized in that: A storage battery (210) is arranged inside the equipment box (200).

5. The emergency protection device for a power distribution cabinet according to claim 1, characterized in that: A power switching module (220) is arranged inside the equipment box (200), and the power switching module (220) is connected to the power source and the storage battery (210) respectively.

6. An emergency protection device for a power distribution cabinet according to any one of claims 1 to 5, characterized in that: A controller (230) is disposed inside the equipment box (200); The controller (230) is electrically connected to the electric air valve (140), the power switching module (220), the fan (250), a plurality of temperature sensors (310), a plurality of smoke sensors (320), and a plurality of solenoid valves (411), respectively.

7. The emergency protection device for a power distribution cabinet according to claim 1, characterized in that: An end cover (241) is rotatably mounted on one end of the filter tube (240) away from the fan (250), and the end cover (241) penetrates the surface of the cabinet (100).

8. The emergency protection device for a power distribution cabinet according to claim 1, characterized in that: The filter tube (240), the filter element (242), the air intake pipe (300) and the air chamber (400) are all made of non-combustible materials.

9. The emergency protection device for a power distribution cabinet according to claim 1, characterized in that: A cabinet door (110) is rotatably mounted inside one side of the cabinet body (100), and a sealing strip is attached to the edge of a surface of the cabinet door (110) facing the cabinet body (100).

10. An emergency protection device for a power distribution cabinet according to claim 9, characterized in that: A plurality of wire holes (120) are provided on the top surface of the cabinet (100), and a sealing ring is embedded and installed inside each wire hole (120).

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