An intelligent monitoring type high and low voltage power distribution cabinet and its usage method

Abstract

The present invention relates to the field of high and low voltage distribution cabinets, and discloses an intelligent monitoring type high and low voltage distribution cabinet, which includes a distribution cabinet body. An inner housing, low-voltage electrical components located below the inner housing, and high-voltage electrical components located inside the inner housing are installed in the distribution cabinet body. A protection member is provided in the distribution cabinet body, and the protection member includes a disconnection component and a fire extinguishing component. The disconnection component includes a first gas cylinder, a cylinder, and a first connection valve group provided between the two. A camera is installed inside the inner housing. The cylinder is arranged vertically and its output end is connected to the low-voltage electrical components. The first connection valve group is used to be opened in case of a fire, so that the cylinder is communicated with the first gas cylinder. The fire extinguishing component includes a second gas cylinder and a fire extinguishing box located above the high-voltage electrical components. The second gas cylinder and the fire extinguishing box are connected through a second connection valve group. The second connection valve group is used to be opened in case of a fire, so that the second gas cylinder is communicated with the fire extinguishing box.

Description

Technical Field

[0001] The present invention relates to the technical field of high and low voltage distribution cabinets, and particularly relates to an intelligent monitoring type high and low voltage distribution cabinet and its usage method. Background Art

[0002] High and low voltage distribution cabinets are power distribution equipment used in the power supply system for power distribution, control, metering, and connecting cables. During use, although circuit breakers, fuses, etc. can be used to protect relevant circuits and electronic components, in the actual use process of the distribution cabinet, due to external force factors or excessive heat accumulation caused by poor heat dissipation ability, etc., it is easy for the distribution cabinet to catch fire, which exceeds the protection ability of circuit breakers and fuses. Therefore, the present invention proposes an intelligent monitoring type high and low voltage distribution cabinet and its usage method, which can achieve efficient fire extinguishing protection for the distribution cabinet. Summary of the Invention

[0003] To solve the problems mentioned in the above background, the present invention provides an intelligent monitoring type high and low voltage distribution cabinet and its usage method.

[0004] To achieve the above technical objectives, the technical solutions adopted by the present invention are as follows.

[0005] An intelligent monitoring type high and low voltage distribution cabinet includes a distribution cabinet body. An inner housing and electrical components are installed in the distribution cabinet body. The electrical components include low-voltage electrical components located below the inner housing and high-voltage electrical components located inside the inner housing.

[0006] A protection component is arranged in the distribution cabinet body. The protection component includes a disconnection component and a fire extinguishing component. The disconnection component includes a first gas tank, a cylinder, and a first connection valve group arranged between the two. A camera is installed inside the inner housing. The cylinder is arranged vertically and its output end is connected to the low-voltage electrical component. The first gas tank is filled with a compressed gas medium. The first connection valve group is used to be opened during a fire to connect the cylinder and the first gas tank.

[0007] The fire extinguishing component includes a second gas tank and a fire extinguishing box located above the high-voltage electrical component. The second gas tank is filled with a compressed gas medium. An insulating fire extinguishing medium is stored in the fire extinguishing box. The second gas tank and the fire extinguishing box are connected through a second connection valve group. The second connection valve group is used to be opened during a fire to connect the second gas tank and the fire extinguishing box.

[0008] Further, the first connection valve group includes a second connection pipe connected to the first gas tank, a first connection pipe connected to the cylinder. A solenoid valve and a trigger valve are arranged in parallel between the first connection pipe and the second connection pipe.

[0009] Further, the trigger valve includes a valve housing. An upper nozzle and a lower nozzle, which are located on the same straight line, extend from the outer circumferential surface of the valve housing. The upper nozzle is connected to the second connecting pipe, and the lower nozzle is connected to the first connecting pipe. A valve core is sleeved inside the valve housing. A ring groove is provided on the outer circumferential surface of the valve core. A valve rod extends from the end of the valve core. The end of the valve rod extends out of the valve housing. A second spring is sleeved outside the valve rod between the valve core and the end of the valve housing. The end of the valve rod is connected to the side of the inner housing away from the first connecting valve group through a connecting wire. Initially, the second spring is in a compressed state and the ring groove is not connected to the upper nozzle.

[0010] Further, the structure of the second connecting valve group is the same as that of the first connecting valve group. The connection relationships among the second connecting valve group, the second gas tank, and the fire extinguishing box are the same as those among the first connecting valve group, the first gas tank, and the air cylinder.

[0011] Further, a spray pipe is connected to the bottom of the fire extinguishing box through a check valve. Nozzles are arranged on the outer circumferential surface of the spray pipe facing downwards. A plurality of nozzles are arranged in an array along the axial line direction of the spray pipe. The check valve is used to make the insulating fire extinguishing medium in the fire extinguishing box flow unidirectionally towards the spray pipe. Initially, the gravity of the insulating fire extinguishing medium in the fire extinguishing box is not sufficient to open the check valve.

[0012] Further, the first connecting valve group and the second connecting valve group share a connecting wire.

[0013] Further, a connection port is provided at the bottom of the inner housing. A fan is installed inside the housing of the low-voltage electrical component. A notch is provided on the upper end surface of the housing of the low-voltage electrical component. A convex pipe extends from the upper orifice of the notch. The convex pipe is located directly below the connection port.

[0014] Two deflecting plates are hingedly installed inside the inner housing, and the hinge points of the two deflecting plates are respectively located on both sides of the connection port. Initially, the convex pipe is inserted into the connection port and the upper end of the convex pipe contacts the deflecting plate. The output end of the fan is connected to the notch. When the convex pipe leaves the connection port, the deflecting plate deflects downwards under the action of gravity. When the deflecting plate is horizontally arranged, the bottom of the deflecting plate contacts the lower cavity wall of the inner housing, and the opposite ends of the two deflecting plates contact each other.

[0015] Further, the low-voltage electrical component and the high-voltage electrical component are conductively connected through a connecting member. The connecting member includes an upper connecting component and a lower connecting component.

[0016] The upper connecting component includes an installation port provided at the bottom of the inner housing. A base is provided inside the installation port. A plurality of groups of upper connecting units are arranged in an array along the length direction on the base. Each upper connecting unit includes a contact hole provided on the lower end surface of the base. A metal contact piece is coaxially installed inside the contact hole. A side hole communicating with the contact hole is provided on the side surface of the base. A first wire is connected to the outer circumferential surface of the metal contact piece. The end of the first wire passes through the side hole and is connected to the high-voltage electrical component.

[0017] The lower connection component includes a lower connection unit located directly below the upper connection unit. The lower connection unit includes a second wire and an insulating sleeve column that is coaxially located below the contact hole and has a hollow interior. One end of the second wire is connected to a low-voltage electrical component, and the other end is provided with a metal contact rod that passes through the insulating sleeve column. The second wire is connected to the insulating sleeve column. A separator sleeve is sleeved outside the insulating sleeve column. An internal step is provided at the lower opening of the separator sleeve. An external step is provided at the upper end of the insulating sleeve column. An outer shoulder is provided on the outer cylindrical surface of the insulating sleeve column below the separator sleeve. A first spring is provided between the outer shoulder and the internal step. When the first spring is not compressed, the metal contact rod is entirely hidden inside the separator sleeve. Initially, the metal contact rod is inserted into the contact hole.

[0018] A usage method of an intelligent monitoring type high and low voltage power distribution cabinet:

[0019] Step 1: During normal use, the metal contact rod of the connection component is inserted into the contact hole and contacts the metal contact piece to achieve the electrical connection between the low-voltage electrical component and the high-voltage electrical component. This power distribution cabinet operates normally. At the same time, the airflow generated by the operation of the fan can flow into the inner housing and be discharged through the air outlet provided on the side of the inner housing and near the upper end of the inner housing, realizing the heat dissipation and temperature reduction of the high-voltage electrical components in the inner housing.

[0020] Step 2: When a fire occurs, the camera or the connecting wire is triggered, causing the first connection valve group and the second connection valve group to be opened simultaneously. The first gas cylinder is connected to the air cylinder, and the second gas cylinder is connected to the fire extinguishing box.

[0021] The compressed gas medium in the first gas cylinder drives the operation of the air cylinder, thereby driving the low-voltage electrical component to move downward. The metal contact rod leaves the contact hole and retracts into the separator sleeve, disconnecting the connection between the low-voltage electrical component and the high-voltage electrical component.

[0022] The compressed gas medium in the second gas cylinder flows into the fire extinguishing box, opens the one-way valve, and drives the insulating fire extinguishing medium to spray downward to achieve fire extinguishing.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] In this solution, through the camera and the connecting wire, dual monitoring of the high-voltage electrical components is achieved. When a fire occurs in the high-voltage electrical components, the protection component can be triggered in a timely and reliable manner to achieve fire extinguishing protection for the high-voltage electrical components. On this basis:

[0025] The first connection valve group and the second connection valve group share a connecting wire. When the camera detects a fire first, a signal is sent to open the first connection valve group and the second connection valve group simultaneously. When the connecting wire is burned by the fire first, the first connection valve group and the second connection valve group are also opened simultaneously;

[0026] The advantage of simultaneously opening Connecting Valve Group 1 and Connecting Valve Group 2 is as follows: On the one hand, the operation of the air cylinder drives the low-voltage electrical components to move downward, cutting off the power supply of this power distribution cabinet and closing the connection port through the deflection plate. On the other hand, the insulating fire extinguishing medium in the fire extinguishing box is sprayed downward into the inner housing, achieving a fire extinguishing effect. The combination of the two enables most of the insulating fire extinguishing medium to be located in the inner housing, thereby making the fire extinguishing effect better. The fire extinguishing effect includes extinguishing or suppressing the flame in the first place, and subsequently adhering to the surface of the high-voltage electrical components in the inner housing to prevent the flame from spreading;

[0027] Conversely, if Connecting Valve Group 1 and Connecting Valve Group 2 are not opened simultaneously, not only is there a risk of the insulating fire extinguishing medium leaking out through the unclosed connection port, which will affect the fire extinguishing effect of the insulating fire extinguishing medium on the high-voltage electrical components, but also the connecting wire will fall downward after being burned by the flame and is likely to become a fire-conducting medium, thus easily causing the flame to spread to other parts of the high-voltage electrical components;

[0028] In contrast, in this application, when Connecting Valve Group 1 and Connecting Valve Group 2 are opened simultaneously, not only can most of the insulating fire extinguishing medium be located in the inner housing, making the fire extinguishing effect better, but also the burned connecting wire will be promptly affected by the fire extinguishing effect of the insulating fire extinguishing medium and will not become a fire-conducting medium. Generally speaking, the fire extinguishing effect of this application is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of the present invention;

[0030] Figure 2 It is an internal schematic diagram of the present invention during normal use;

[0031] Figure 3 It is an internal schematic diagram of the present invention after power-off;

[0032] Figure 4 It is a schematic diagram of the connecting member and the electrical component;

[0033] Figure 5 It is a schematic structural diagram of the connecting member;

[0034] Figure 6 It is a cross-sectional view of the inner housing and the fan;

[0035] Figure 7 It is a schematic diagram of the protection member and the inner housing;

[0036] Figure 8 It is a schematic structural diagram of the protection member;

[0037] Figure 9 It is a schematic diagram of Connecting Valve Group 1;

[0038] Figure 10 It is a schematic diagram of the fire extinguishing assembly.

[0039] The reference numerals in the drawings are as follows:

[0040] 100, distribution cabinet body; 101, inner housing; 102, camera; 103, fan; 104, convex pipe; 105, connection port; 106, deflection plate; 200, connection member; 201, base; 202, contact hole; 203, wire one; 204, insulating sleeve column; 205, separating sleeve; 206, spring one; 300, protection member; 301, gas tank one; 302, gas tank two; 303, cylinder; 304, connection valve group one; 305, fire extinguishing box; 3051, spray pipe; 3052, nozzle; 3053, valve pipe; 3054, valve ball; 3055, spring three; 306, connection valve group two; 307, connection pipe one; 308, connection pipe two; 309, solenoid valve; 310, valve housing; 311, valve core; 312, spring two; 313, annular groove; 314, valve rod; 315, connection wire. Detailed implementation manners

[0041] To further elaborate on the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following, in conjunction with the drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects of the present invention as follows.

[0042] Referring to Figures 1 - 10 , an intelligent monitoring type high and low voltage distribution cabinet includes a distribution cabinet body 100. An inner housing 101 and electrical components are installed in the distribution cabinet body 100. The electrical components include low-voltage electrical components and high-voltage electrical components. This can be achieved by the prior art and will not be elaborated here. The former is located below the inner housing 101, and the latter is located inside the inner housing 101. Moreover, almost all fires in the distribution cabinet occur on the latter. Therefore, one of the cores of this solution is to perform intelligent monitoring and efficient fire protection on the latter.

[0043] I. Generally, a heat dissipation structure is provided in the distribution cabinet for heat dissipation and temperature reduction. In this solution, referring to Figure 6 , the heat dissipation structure includes a connection port 105 provided at the bottom of the inner housing 101 and a fan 103 located below the inner housing 101. Among them, in this solution, the fan 103 is placed inside the outer shell of the low-voltage electrical components. A notch is provided on the upper end surface of the outer shell of the low-voltage electrical components, and a convex pipe 104 extends at the upper orifice of the notch. The convex pipe 104 is located directly below the connection port 105.

[0044] Inside the inner housing 101, two deflecting plates 106 are hingedly installed, and the hinge points of the two deflecting plates 106 are respectively located on both sides of the connection port 105. Initially, the convex tube 104 is inserted into the connection port 105 and the upper end of the convex tube 104 contacts the deflecting plate 106. At this time, the output end of the blower 103 is vertically facing the convex tube 104. Therefore, the air flow generated by the operation of the blower 103 can flow into the inner housing 101 and is discharged through the air outlet provided on the side of the inner housing 101 and close to the upper end of the inner housing 101, realizing heat dissipation and temperature reduction of the high-voltage electrical components in the inner housing 101. When a fire occurs, the low-voltage electrical components are driven to move downward, the convex tube 104 leaves the connection port 105, and at the same time, under the action of gravity, the deflecting plate 106 deflects downward. When the deflecting plate 106 is horizontally arranged, the bottom of the deflecting plate 106 contacts the lower cavity wall of the inner housing 101, and the opposite ends of the two deflecting plates 106 contact each other. Therefore, at this time, the connection port 105 can be closed by the two deflecting plates 106.

[0045] II. The low-voltage electrical components and the high-voltage electrical components are conductively connected through a connection member 200:

[0046] Referring to Figures 2 - 5 , the connection member 200 includes an upper connection assembly and a lower connection assembly.

[0047] The upper connection assembly includes a mounting port provided at the bottom of the inner housing 101. A base 201 is provided in the mounting port. A number of groups of upper connection units are arranged in an array along the length direction on the base 201. Further, the upper connection unit includes a contact hole 202 provided on the lower end face of the base 201. A metal contact piece is coaxially installed in the contact hole 202. A side hole communicating with the contact hole 202 is provided on the side of the base 201. The outer circumferential surface of the metal contact piece is connected to a first wire 203. The end of the first wire 203 passes through the side hole and is connected to the high-voltage electrical component.

[0048] The lower connection component includes a lower connection unit located directly below the upper connection unit, and several groups of lower connection units are correspondingly arranged. Further, the lower connection unit includes a second wire and an insulating sleeve column 204 that is coaxially located below the contact hole 202 and has a hollow interior. One end of the second wire is connected to a low-voltage electrical component, and the other end passes through the insulating sleeve column 204 and is provided with a metal contact rod. The second wire is fixedly connected to the insulating sleeve column 204. A separating sleeve 205 is sleeved outside the insulating sleeve column 204. An internal step is provided at the lower opening of the separating sleeve 205, and an external step is provided at the upper end of the insulating sleeve column 204. An external shoulder is also provided on the outer cylindrical surface of the insulating sleeve column 204 below the separating sleeve 205. A first spring 206 is sleeved outside the insulating sleeve column 204 between the external shoulder and the internal step. When the first spring 206 is not compressed, the metal contact rod is entirely hidden within the separating sleeve 205. The separating sleeve 205 is made of a fire-resistant insulating material. Initially, the metal contact rod is inserted into the contact hole 202, similar to a plug inserted into a socket. The metal contact rod and the metal contact piece form a wire connection, thereby enabling the low-voltage electrical component and the high-voltage electrical component to form an electrical connection. The first spring 206 is compressed to enable the normal operation of the low-voltage and high-voltage power distribution cabinet. When a fire occurs, the low-voltage electrical component is driven to move downward, the metal contact rod leaves the contact hole 202, the low-voltage electrical component and the high-voltage electrical component are disconnected, and at the same time, the metal contact rod retracts into the separating sleeve 205, which serves to disconnect the electrical connection and protect the metal contact rod from melting and solidifying due to the fire and causing a short-circuit problem. At the same time, it has an arc extinguishing effect to prevent the adjacent two metal contact rods from being too close and prone to electric spark and arc problems.

[0049] III. A protection member 300 for fire protection is provided inside the power distribution cabinet body 100:

[0050] Refer to Figures 7 - 10 , the protection member 300 includes a disconnection component and a fire extinguishing component. The disconnection component is used to drive the low-voltage electrical component downward, so that the electrical connection between the low-voltage electrical component and the high-voltage electrical component is disconnected and the connection port 105 is closed. The fire extinguishing component is used to extinguish the fire of the high-voltage electrical component in the inner housing 101.

[0051] Refer to Figure 8 And Figure 9 , the disconnection component includes a first gas cylinder 301, a cylinder 303, and a camera 102 located in the inner housing 101. The camera 102 can be realized by the existing thermal imaging camera technology. When a fire occurs in the inner housing 101, it can timely sense and send a signal to the connection valve group 304. The connection valve group 304 is located between the first gas cylinder 301 and the cylinder 303.

[0052] The cylinder 303 is vertically arranged and its output end is connected to the low-voltage electrical component. The first gas cylinder 301 is filled with a compressed gas medium, such as air.

[0053] The first connecting valve group 304 includes a second connecting pipe 308 connected to the first gas tank 301 and a first connecting pipe 307 connected to the cylinder 303. A solenoid valve 309 and a trigger valve are arranged in parallel between the first connecting pipe 307 and the second connecting pipe 308. The solenoid valve 309 is a prior art and can be realized, so it will not be elaborated here.

[0054] The trigger valve includes a valve housing 310. A valve core 311 is sleeved inside the valve housing 310. An upper nozzle and a lower nozzle which are located on the same straight line extend from the outer circumferential surface of the valve housing 310. The upper nozzle is connected to the second connecting pipe 308, and the lower nozzle is connected to the first connecting pipe 307. An annular groove 313 is arranged on the outer circumferential surface of the valve core 311. A valve rod 314 extends from the end of the valve core 311. The end of the valve rod 314 extends out of the valve housing 310. A second spring 312 which is located between the valve core 311 and the end of the valve housing 310 is sleeved outside the valve rod 314. The end of the valve rod 314 is connected to the side of the inner housing 101 far away from the first connecting valve group 304 through a connecting wire 315. Initially, the second spring 312 is in a compressed state and the annular groove 313 is not communicated with the upper nozzle. When the connecting wire 315 is burned off by the flame, the second spring 312 can release its elastic force to make the annular groove 313 communicate with the upper nozzle. The connecting wire 315 can be a nylon wire, a cotton thread, etc.

[0055] In case of a fire, if the camera 102 is in good condition, it will send out a signal in time to open the solenoid valve 309, so that the first gas tank 301 is communicated with the cylinder 303. Driven by the compressed gas medium, the cylinder 303 operates and drives the low-voltage electrical components to move downward. If the camera is damaged due to long time or other factors, the flame will burn off the connecting wire 315 in time to open the trigger valve, so that the first gas tank 301 is communicated with the cylinder 303, and at the same time, it can drive the low-voltage electrical components to move downward.

[0056] Refer to Figure 8 And Figure 10 As shown in, the fire extinguishing assembly includes a second gas tank 302 and a fire extinguishing box 305 located above the high-voltage electrical components. The second gas tank 302 is filled with a compressed gas medium, such as nitrogen. The fire extinguishing box 305 stores an insulating fire extinguishing medium, such as dry powder. The second gas tank 302 and the fire extinguishing box 305 are connected through a second connecting valve group 306. The structure of the second connecting valve group 306 is the same as that of the first connecting valve group 304. The connection relationship among the second connecting valve group 306, the second gas tank 302 and the fire extinguishing box 305 is the same as the connection relationship among the first connecting valve group 304, the first gas tank 301 and the cylinder 303, and can communicate the second gas tank 302 with the fire extinguishing box 305 in case of a fire.

[0057] Below the fire extinguishing box 305, there is a nozzle 3051. The nozzle 3051 is connected to the fire extinguishing box 305 through a one-way valve. The outer circumferential surface of the nozzle 3051 is provided with nozzles 3052 facing downwards. A number of nozzles 3052 are arranged in an array along the axial line direction of the nozzle 3051.

[0058] Further, the one-way valve includes a valve pipe 3053 vertically arranged between the bottom of the fire extinguishing box 305 and the nozzle 3051. An inner support and an inner shoulder are arranged inside the valve pipe 3053. The inner shoulder is located above the inner support, and a valve ball 3054 and a spring three 3055 are arranged between them. The spring three 3055 is located below the valve ball 3054. Initially, the spring three 3055 is compressed, the valve ball 3054 blocks the inner shoulder, and the gravity of the insulating fire extinguishing medium in the fire extinguishing box 305 is not enough to overcome the elastic force of the spring three 3055 to open the inner shoulder. When a fire occurs, the gas cylinder two 302 is communicated with the fire extinguishing box 305. After the compressed gas medium in the gas cylinder two 302 flows into the fire extinguishing box 305, it will overcome the elastic force of the spring three 3055 to open the inner shoulder, so as to drive the insulating fire extinguishing medium to be sprayed downward to achieve the purpose of extinguishing the fire.

[0059] A usage method of an intelligent monitoring type high and low voltage power distribution cabinet:

[0060] Step 1: During normal use, the metal contact rod of the connecting member 200 is inserted into the contact hole 202 to contact the metal contact piece, so as to realize the conductive connection between the low-voltage electrical components and the high-voltage electrical components. This power distribution cabinet operates normally. At the same time, the airflow generated by the operation of the fan 103 can flow into the inner housing 101 and is discharged through the air outlet arranged on the side of the inner housing 101 and close to the upper end of the inner housing 101, so as to realize the heat dissipation and temperature reduction of the high-voltage electrical components in the inner housing 101.

[0061] Step 2: When a fire occurs, through the double monitoring trigger of the camera 102 and the connecting wire 315, the connecting valve group one 304 and the connecting valve group two 306 are opened, so that the gas cylinder one 301 is communicated with the cylinder 303, and the gas cylinder two 302 is communicated with the fire extinguishing box 305, where:

[0062] The compressed gas medium in the gas cylinder one 301 drives the cylinder 303 to operate, so as to drive the low-voltage electrical components to move downward. The metal contact rod leaves the contact hole 202, and the low-voltage electrical components are disconnected from the high-voltage electrical components. At the same time, the metal contact rod retracts into the partition sleeve 205, which plays the role of disconnecting the conductive connection and protecting the metal contact rod from being melted and condensed by the fire to cause a short circuit problem. At the same time, it plays the role of arc extinguishing to avoid the problem of electric spark arc easily occurring when two adjacent metal contact rods are too close.

[0063] After the compressed gas medium in the second gas tank 302 flows into the fire extinguishing box 305, it will overcome the elastic force of the third spring 3055 and open the inner shaft shoulder, thereby driving the insulating fire extinguishing medium to spray downward to achieve the purpose of extinguishing fire.

[0064] Preferably, the first connection valve group 304 and the second connection valve group 306 share a connecting wire 315. The significance is that when the camera 102 detects a fire first, a signal is sent to open the first connection valve group 304 and the second connection valve group 306 simultaneously. When the connecting wire 315 is burned by the fire first, the first connection valve group 304 and the second connection valve group 306 are also opened simultaneously. The advantage of being opened simultaneously is as follows: On the one hand, the cylinder 303 operates to drive the low-voltage electrical components to move downward, cut off the power supply of this power distribution cabinet, and close the connection port 105 through the deflector plate 106. On the other hand, the insulating fire extinguishing medium in the fire extinguishing box 305 sprays downward into the inner housing 101 to achieve the fire extinguishing effect. The two cooperate to enable most of the insulating fire extinguishing medium to be located in the inner housing 101, thereby making the fire extinguishing effect better. The fire extinguishing effect includes extinguishing or suppressing the flame in the first time, and adhering to the surface of the high-voltage electrical components in the inner housing 101 to prevent the flame from spreading. Conversely, if the first connection valve group 304 and the second connection valve group 306 are not opened simultaneously, not only is it easy for the insulating fire extinguishing medium to leak out through the unclosed connection port 105, which will affect the fire extinguishing effect of the insulating fire extinguishing medium on the high-voltage electrical components, but also the connecting wire 315 will fall down after being burned by the fire and is likely to become a fire guiding medium, thus easily causing the flame to spread to other parts of the high-voltage electrical components. In contrast, in this application, the first connection valve group 304 and the second connection valve group 306 are opened simultaneously, which can not only enable most of the insulating fire extinguishing medium to be located in the inner housing 101, thereby making the fire extinguishing effect better, but also the burned connecting wire 315 will be timely affected by the fire extinguishing effect of the insulating fire extinguishing medium and will not become a fire guiding medium. Generally speaking, the fire extinguishing effect of this application is better.

[0065] In this application, the intelligent monitoring is reflected in that it can realize the automatic real-time monitoring and automatic timely fire extinguishing of the power distribution cabinet without manual assistance.

[0066] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An intelligent monitoring type high and low voltage power distribution cabinet, comprising a power distribution cabinet body (100), characterized in that, An inner housing (101) and electrical components are installed inside the distribution cabinet body (100). The electrical components include low-voltage electrical components located below the inner housing (101) and high-voltage electrical components located inside the inner housing (101). A protection component (300) is arranged inside the distribution cabinet body (100). The protection component (300) includes a disconnection assembly and a fire extinguishing assembly. The disconnection assembly includes a first gas tank (301), a cylinder (303), and a first connection valve group (304) arranged between the two. A camera (102) is installed inside the inner housing (101). The cylinder (303) is vertically arranged and its output end is connected to the low-voltage electrical component. The first gas tank (301) is filled with a compressed gas medium. The first connection valve group (304) is used to be opened in case of a fire to connect the cylinder (303) with the first gas tank (301). The fire extinguishing assembly includes a second gas tank (302) and a fire extinguishing box (305) located above the high-voltage electrical component. The second gas tank (302) is filled with a compressed gas medium. The fire extinguishing box (305) stores an insulating fire extinguishing medium. The second gas tank (302) and the fire extinguishing box (305) are connected through a second connection valve group (306). The second connection valve group (306) is used to be opened in case of a fire to connect the second gas tank (302) with the fire extinguishing box (305). The first connection valve group (304) includes a second connection pipe (308) connected to the first gas tank (301) and a first connection pipe (307) connected to the cylinder (303). A solenoid valve (309) and a trigger valve are arranged in parallel between the first connection pipe (307) and the second connection pipe (308). The trigger valve includes a valve housing (310). An upper connection nozzle and a lower connection nozzle located on the same straight line extend from the outer circular surface of the valve housing (310). The upper connection nozzle is connected to the second connection pipe (308), and the lower connection nozzle is connected to the first connection pipe (307). A valve core (311) is sleeved inside the valve housing (310). A ring groove (313) is arranged on the outer circular surface of the valve core (311). A valve rod (314) extends from the end of the valve core (311). The end of the valve rod (314) extends out of the valve housing (310). A second spring (312) is sleeved outside the valve rod (314) between the valve core (311) and the end of the valve housing (310). The end of the valve rod (314) is connected to the side of the inner housing (101) away from the first connection valve group (304) through a connection line (315). Initially, the second spring (312) is in a compressed state and the ring groove (313) is not connected to the upper connection nozzle. The structure of the second connection valve group (306) is the same as that of the first connection valve group (304). The connection relationship between the second connection valve group (306), the second gas tank (302), and the fire extinguishing box (305) is the same as the connection relationship between the first connection valve group (304), the first gas tank (301), and the cylinder (303). The first connection valve group (304) and the second connection valve group (306) share a connection line (315). At the bottom of the inner housing (101), there is a connection port (105). Inside the outer housing of the low-voltage electrical components, there is a fan (103). At the upper end face of the outer housing of the low-voltage electrical components, there is a notch, and a convex tube (104) extends at the upper orifice of the notch. The convex tube (104) is located directly below the connection port (105). Inside the inner housing (101), two deflecting plates (106) are hingedly installed, and the hinge points of the two deflecting plates (106) are respectively located on both sides of the connection port (105). Initially, the convex tube (104) is inserted into the connection port (105) and the upper end of the convex tube (104) contacts the deflecting plate (106). The output end of the fan (103) is connected to the notch. When the convex tube (104) leaves the connection port (105), the deflecting plate (106) deflects downward under the action of gravity. When the deflecting plate (106) is horizontally arranged, the bottom of the deflecting plate (106) contacts the lower cavity wall of the inner housing (101), and the opposite ends of the two deflecting plates (106) contact each other. The air flow generated by the operation of the fan (103) can flow into the inner housing (101) and is discharged through the air outlet provided on the side of the inner housing (101) and close to the upper end of the inner housing (101).

2. The intelligent monitoring type high and low voltage power distribution cabinet according to claim 1, wherein At the bottom of the fire extinguishing box (305), there is a spray pipe (3051) connected through a one-way valve. On the outer cylindrical surface of the spray pipe (3051), there are spray nozzles (3052) arranged downward. A number of spray nozzles (3052) are arranged in an array along the axis direction of the spray pipe (3051). The one-way valve is used to make the insulating fire extinguishing medium in the fire extinguishing box (305) flow unidirectionally towards the spray pipe (3051). Initially, the gravity of the insulating fire extinguishing medium in the fire extinguishing box (305) is not sufficient to open the one-way valve.

3. The intelligent monitoring type high and low voltage power distribution cabinet according to claim 1, wherein, The low-voltage electrical components and the high-voltage electrical components are conductively connected through a connection member (200). The connection member (200) includes an upper connection assembly and a lower connection assembly. The upper connection assembly includes an installation opening provided at the bottom of the inner housing (101). Inside the installation opening, there is a base (201). Along the length direction on the base (201), a number of groups of upper connection units are arranged in an array. The upper connection unit includes a contact hole (202) provided on the lower end face of the base (201). Inside the contact hole (202), a metal contact piece is coaxially installed. On the side of the base (201), there is a side hole communicating with the contact hole (202). The outer cylindrical surface of the metal contact piece is connected to a first wire (203). The end of the first wire (203) passes through the side hole and is connected to the high-voltage electrical component. The lower connection component includes a lower connection unit located directly below the upper connection unit. The lower connection unit includes a second wire and an insulating sleeve column (204) that is coaxially located below the contact hole (202) and has a hollow interior. One end of the second wire is connected to a low-voltage electrical component, and the other end is provided with a metal contact rod that passes through the insulating sleeve column (204). The second wire is connected to the insulating sleeve column (204). A separating sleeve (205) is sleeved outside the insulating sleeve column (204). An internal step is provided at the lower opening of the separating sleeve (205). An external step is provided at the upper end of the insulating sleeve column (204). An outer shoulder is provided on the outer cylindrical surface of the insulating sleeve column (204) below the separating sleeve (205). A first spring (206) is provided between the outer shoulder and the internal step. When the first spring (206) is not compressed, the entire metal contact rod is hidden inside the separating sleeve (205). Initially, the metal contact rod is inserted into the contact hole (202).

4. The usage method of an intelligent monitoring type high and low voltage power distribution cabinet according to claim 3, characterized in that, It includes the following steps: Step 1: During normal use, the metal contact rod of the connection member (200) is inserted into the contact hole (202) and contacts the metal contact piece, realizing the conductive connection between the low-voltage electrical component and the high-voltage electrical component. This power distribution cabinet operates normally. At the same time, the airflow generated by the operation of the fan (103) can flow into the inner housing (101) and is discharged through the air outlet provided on the side of the inner housing (101) and close to the upper end of the inner housing (101), realizing the heat dissipation and temperature reduction of the high-voltage electrical components in the inner housing (101). Step 2: When a fire occurs, the camera (102) or the connecting wire (315) is triggered, causing the first connection valve group (304) and the second connection valve group (306) to be opened simultaneously. The first gas cylinder (301) is connected to the cylinder (303), and the second gas cylinder (302) is connected to the fire extinguishing box (305). The compressed gas medium in the first gas cylinder (301) drives the cylinder (303) to operate, thereby driving the low-voltage electrical component to move downward. The metal contact rod leaves the contact hole (202) and retracts into the separating sleeve (205), disconnecting the low-voltage electrical component from the high-voltage electrical component. The compressed gas medium in the second gas cylinder (302) flows into the fire extinguishing box (305), opens the one-way valve, and drives the insulating fire extinguishing medium to be sprayed downward to achieve fire extinguishing.

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