A power distribution cabinet with real-time safety detection function

Abstract

This application relates to the field of power distribution cabinets, and more particularly to a power distribution cabinet with real-time safety detection function, comprising a cabinet body, the cabinet body including a fire extinguishing chamber and an electrical chamber, the fire extinguishing chamber being located on top of the electrical chamber; the cabinet body is provided with an openable and closable cabinet door; a fire extinguisher is located in the fire extinguishing chamber; a detection unit is located in the electrical chamber for real-time detection of environmental parameters within the electrical chamber; and a control system for controlling valve opening, the control system having a first control mode and a second control mode. In the first control mode, when the temperature value detected by the temperature sensor and the smoke concentration value detected by the smoke sensor both exceed their respective preset thresholds, a driving component controls the valve to open; in the second control mode, when the temperature inside the electrical chamber reaches a set operating temperature, a thermally actuated element drives the valve to open. This dual independent control mode achieves fire extinguishing protection under both powered and unpowered operating conditions.

Description

Technical Field

[0001] This application relates to the field of power distribution cabinets, and more particularly to a power distribution cabinet with real-time safety detection function. Background Technology

[0002] As a key device in a power system used for distributing electrical energy, controlling circuits, and protecting equipment, the operational safety of the distribution cabinet directly affects the reliability and stability of the entire power supply system. With the continuous growth of power load and the increasing intelligence of power distribution systems, the electrical components integrated inside the distribution cabinet are becoming increasingly dense, and the operating environment is becoming more complex, placing higher demands on its safe operation.

[0003] During long-term operation, distribution cabinets are prone to localized overheating, arc discharge, and even electrical fires due to factors such as aging wiring, poor contact, insulation deterioration, overload operation, or short circuits.

[0004] Therefore, some existing power distribution cabinets are equipped with automatic fire extinguishing systems, which mainly use temperature sensors, smoke sensors, etc. to monitor the safety status inside the power distribution cabinet in real time. Once a fire breaks out inside the power distribution cabinet, the system controls the fire extinguisher to extinguish the fire automatically.

[0005] However, the automatic fire extinguishing triggering of this type of distribution cabinet is highly dependent on the power supply. When an electrical fire occurs, the distribution cabinet is often accompanied by faults such as short circuits and overloads, which can easily lead to a power outage in the control system, causing the fire extinguishing system to fail and be unable to respond and extinguish the fire. Therefore, it still needs to be improved. Summary of the Invention

[0006] In order to solve at least one of the technical problems mentioned in the background art, the purpose of this application is to provide a power distribution cabinet with real-time safety detection function.

[0007] To achieve the above objectives, this application provides the following technical solution.

[0008] A power distribution cabinet with real-time safety detection function includes: The cabinet includes a fire extinguishing chamber and an electrical room, with the fire extinguishing chamber located on top of the electrical room; the cabinet is equipped with an openable and closable door. A fire extinguisher, located in a fire extinguishing room, has an output pipe, the output end of which is connected to an electrical room; A detection unit, located in the electrical room, is used to detect environmental parameters in the electrical room in real time. The detection unit includes at least a smoke sensor and a temperature sensor. A valve, located on the output pipeline, is used to control the opening and closing of the output pipeline; A control system for controlling the opening of a valve, the control system having a first control mode and a second control mode, the valve being able to be opened independently by either the first control mode or the second control mode: In the first control mode, when the temperature value detected by the temperature sensor and the smoke concentration value detected by the smoke sensor both exceed their respective preset thresholds, a driving component controls the valve to open. In the second control mode, when the temperature inside the electrical room reaches a set operating temperature, the valve is opened by a thermally actuated element, wherein the set operating temperature is greater than the set threshold of the temperature sensor.

[0009] As an optional embodiment of this application, the valve includes a valve body, a valve core, a first elastic element, and a locking pin. The valve core is rotatable relative to the valve body about a first axis to switch between a closed position and an open position; The first elastic element is used to provide elastic force so that the valve core always has a tendency to rotate from the closed position to the open position; The locking pin has a locked state and a locked state: In the locked state, the locking pin restricts the valve core from rotating to the open position; In the unlocked state, the locking pin releases the valve core from its restraint, and the valve core rotates to the open position under the action of the first elastic element; The locking pin can be driven by either the driving component or the thermally actuated element to switch from the locked state to the unlocked state.

[0010] As an optional embodiment of this application, the valve core is fixedly connected to a stop rod arranged perpendicular to the first axis; The locking pin has a stop section, which is arranged along the first axis direction and is movable along the first axis direction; In the locked state, the stop section is located in the rotation path of the stop rod and blocks the stop rod to restrict the valve core from rotating to the open position; In the unlocked state, the stop section deviates from the rotation path of the stop lever to avoid it.

[0011] As an optional embodiment of this application, the stop bar is provided with a rotatable guide wheel, and in the locked state, the stop section abuts against the outer peripheral wall of the guide wheel.

[0012] As an optional embodiment of this application, the locking pin further includes a force-bearing section that remains relatively fixed to the stop section; the force-bearing section extends along the first axis; when the thermal actuation element operates in response to the temperature reaching the set operating temperature, the thermal actuation element pushes the force-bearing section to move along the first axis, thereby causing the stop section to deviate from the rotation path of the stop lever.

[0013] As an optional embodiment of this application, the driving component is a component capable of telescopic movement along the first axis direction, which drives the stop section to unlock by pushing the force-bearing section to move along the first axis direction.

[0014] As an optional implementation of this application, it also includes a safety mechanism, which is configured to lock the locking pin when the cabinet door of the distribution cabinet is in the open state to restrict the unlocking of the locking pin, and to release the unlocking restriction on the locking pin when the cabinet door is in the closed state.

[0015] As an optional implementation of this application, the insurance institution includes: Side rod, fixed with locking pin; A swing arm, located in the electrical compartment, is rotatable around a second axis to switch between a first state and a second state. The second axis is parallel to the first axis. The swing arm forms a trigger section and a limiting section with the second axis as the boundary. In the first state, the limiting section is at least partially located on the upper side of the side rod to prevent the side rod from moving upward, and the trigger section at least partially protrudes from the front side of the electrical compartment to be squeezed by the cabinet door. In the second state, the trigger section is offset from the side rod to avoid the side rod. The second elastic element provides elastic force so that the swing arm always tends to switch to the first state; when the cabinet door is closed, the cabinet door presses the trigger segment to make the swing arm rotate, forcing the swing arm to switch to the second state.

[0016] As an optional embodiment of this application, the thermally actuated element is a memory alloy spring, and the set operating temperature is 75℃-95℃.

[0017] As an optional embodiment of this application, the thermally actuated element is at least partially exposed in the electrical compartment. Compared with the prior art, this application has the following advantages: By setting up two independent valve opening control paths—a first control mode (electric control mode) and a second control mode (mechanical mode)—intelligent and proactive fire suppression is achieved through combined judgment by temperature and smoke sensors when the control system is powered normally. When the control system loses power due to a fire, although the drive components cannot operate, the thermally actuated element (shape memory alloy spring) can independently respond to the increase in ambient temperature and actuate to unlock the locking pin, ensuring that the valve can still be reliably opened. The two control modes are independent of each other, overcoming the fatal flaw of traditional fire suppression devices that completely fail during power outages, and providing fire suppression protection for the distribution cabinet under all operating conditions.

[0018] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description. Attached Figure Description

[0019] The above and other objects, features, and advantages of exemplary embodiments of this application will become readily apparent from the following detailed description taken in conjunction with the accompanying drawings. Several embodiments of this application are illustrated in the drawings by way of example and not limitation, in which: In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0020] Figure 1 A schematic diagram of the power distribution cabinet of this application is shown; Figure 2 A cross-sectional view of the valve in this application is shown; Figure 3 A top cross-sectional view of the valve of this application is shown; Figure 4 A partial structural schematic diagram of this application is shown. Figure 1 ; Figure 5 A partial structural schematic of this application is shown. Figure 2 ; Figure 6 A partial structural schematic diagram of the electrical room of this application is shown; Figure 7 This application shows Figure 6 Enlarged view of section A; Figure 8 This shows a top view of the insurance company in this application. Figure 1 ; Figure 9 This shows a top view of the insurance company in this application. Figure 2 .

[0021] Explanation of the labels in the diagram: 100. Cabinet; 110. Fire extinguishing room; 120. Electrical room; 121. Refuge opening; 130. Cabinet door; 140. Partition; 141. Linear bearing; 200. Fire extinguisher; 210. Output piping; 300. Valve; 310. Valve body; 311. Inlet; 312. Outlet; 320. Valve core; 321. Valve passage; 330. Valve seat; 331. Guide groove; 340. Valve stem; 341. Stop rod; 342. Guide wheel; 350. Torsion spring; 360. Locking pin; 361. Force-bearing section; 362. Stop section; 363. Transition section; 364. Push plate; 370. H-beam wheel; 410. Shape memory alloy spring; 420. Drive component; 500, sleeve; 510, sprue; 600, Insurance Institution; 610, Swing Arm; 611, Limiting Section; 612, Triggering Section; 620, Side Rod; 630, Tension Spring. Detailed Implementation

[0022] To make the objectives, features, and advantages of this application more apparent and understandable, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Example 1 like Figures 1-9 As shown, this application provides a power distribution cabinet (hereinafter referred to as the power distribution cabinet) with real-time safety detection function, including a cabinet body 100, a fire extinguisher 200, a detection unit, a valve 300, a control system, etc.

[0024] Figure 1 A schematic diagram of the power distribution cabinet of this application is shown, as follows: Figure 1 As shown, the power distribution cabinet 100 is provided with a horizontally arranged partition 140, which divides the internal space of the power distribution cabinet 100 into an upper fire extinguishing chamber 110 and a lower electrical chamber 120.

[0025] Fire extinguishing room 110 is mainly used to install fire extinguishers 200 and other equipment, while electrical room 120 is mainly used as the installation space for related electrical components of the power distribution cabinet.

[0026] In addition, the cabinet 100 is provided with a cabinet door 130, which is hinged to the cabinet 100, allowing the cabinet door 130 to be opened and closed by rotation; such as Figure 1 As shown, the cabinet door 130 is hinged to the left side of the cabinet body 100. The cabinet door 130 is opened and closed by flipping left and right. It can be understood that the cabinet door 130 is equipped with a lock to lock the cabinet door 130 when it is closed. Such cabinet doors 130 with locks are basically involved in existing power distribution cabinets, so they will not be described in detail here.

[0027] Fire extinguisher 200 is installed in fire extinguishing chamber 110. It mainly includes a bottle containing extinguishing medium and an output pipe 210 connected to the bottle. The bottle is fixed to the partition 140 of fire extinguishing chamber 110. In this embodiment, the extinguishing medium can be dry powder or carbon dioxide, preferably ultrafine dry powder, which has the advantages of being non-conductive and non-corrosive to electrical equipment, and is especially suitable for extinguishing electrical fires in distribution cabinets. The extinguishing medium in the bottle is output through the output pipe 210.

[0028] The first end of the output pipe 210 is connected to the bottle body, and the second end is connected to the electrical room 120. For example, the second end of the output pipe 210 passes through the partition 140 and faces vertically downward. When extinguishing a fire, the extinguishing medium is sprayed vertically downward into the electrical room 120 through the output pipe 210 to extinguish the fire in the electrical room 120.

[0029] The detection unit is located in the electrical room 120 and is mainly used to detect environmental parameters inside the electrical room. The detection unit includes at least a smoke sensor and a temperature sensor. The smoke sensor is used to detect the smoke concentration value inside the electrical room 120, and the temperature sensor is used to detect the temperature value inside the electrical room 120.

[0030] Valve 300 is located in output pipeline 210 and is mainly used to control the opening and closing of output pipeline 210. That is, when valve 300 is closed, output pipeline 210 is cut off; when valve 300 is opened, output pipeline 210 is opened, and the extinguishing medium in fire extinguisher 200 is sprayed out through output pipeline 210 under the action of air pressure in fire extinguisher 200.

[0031] Figure 2 A cross-sectional view of valve 300 of this application is shown. Figure 3 A top cross-sectional view of valve 300 of this application is shown; as follows: Figure 2 and Figure 3 As shown, the valve 300 of this application includes a valve body 310 and a valve core 320, which form a ball valve structure. An inlet 311 and an outlet 312 are formed on both sides of the valve body 310. The valve core 320 is spherical and rotatably disposed in the valve body 310 around a first axis. For example, in this application, the first axis is parallel to the vertical direction. The direction of the first axis referred to in this application can also be understood as vertical.

[0032] The valve core 320 has a horizontally arranged valve passage 321, such as Figure 2 As shown, when valve 300 is open, inlet 311 and outlet 312 are connected through valve passage 321; valve core 320 rotates horizontally 90° from the open position to the closed position. At this time, valve passage 321 of valve core 320 is perpendicular to the line connecting inlet 311 and outlet 312, that is, the solid part of valve core 320 is blocked between inlet 311 and outlet 312.

[0033] In addition, in this application, the valve 300 also includes a valve seat 330 and a valve stem 340. The valve seat 330 has a tubular structure and is vertically fixed to the bottom of the valve body 310; the valve seat 330 is also fixed to the partition plate 140. The valve stem 340 is vertically inserted into the valve seat 330, and its upper end valve core 320 is fixed thereto. Thus, rotating the valve stem 340 will drive the valve core 320 to rotate; at this time, the first axis can be understood as the central axis of the valve stem 340.

[0034] The valve stem 340 drives the valve core 320 to switch between the open and closed positions relative to the valve body 310 around the first axis: In the open position, such as Figure 2 As shown, the valve passage 321 of the valve core 320 connects the inlet 311 and the outlet 312 to open the valve 300.

[0035] In the closed position, valve core 320 blocks the connection between inlet 311 and outlet 312 to close valve 300.

[0036] In addition, such as Figure 2 and Figure 3 As shown, the valve 300 provided in this application also includes a torsion spring 350 and a locking pin 360.

[0037] A torsion spring 350 is disposed within the valve seat 330 and sleeved on the valve stem 340. One end of the spring is fixed to the valve seat 330 or valve body 310, and the other end is fixed to the valve stem 340. The torsion spring 350 provides elastic torque, causing the valve core 320 to always have a tendency to rotate from the closed position to the open position. Of course, in some alternative embodiments, in addition to the torsion spring 350, other elastic elements that provide elastic force and cause the valve core 320 to always have a tendency to rotate from the closed position to the open position can be used.

[0038] A stop rod is fixedly connected to the valve stem 340. The stop rod is set perpendicular to the first axis, that is, it is set radially along the valve seat 330. It is relatively fixed to the valve core 320, so that the valve core 320 and the valve stem 340 rotate synchronously. The stop rod is mainly set to cooperate with the locking pin 360 to realize the opening and closing of the valve core 320.

[0039] In order not to interfere with the rotation of the stop rod, a guide groove 331 is provided on the peripheral wall of the valve seat 330, which is arranged around the circumference of the valve seat 330. The stop rod passes through the guide groove 331 and can rotate in the guide groove 331 along the extension direction of the guide groove 331.

[0040] Figure 4 A partial structural schematic of this application is shown. Figure 1 The main illustration shows the structure of valve 300 in the valve seat 330 position when the locking pin 360 is in the locked state. Figure 5 A partial structural schematic of this application is shown. Figure 2 The illustration mainly shows the structure of valve 300 in the valve seat 330 position when the locking pin 360 is in the unlocked state.

[0041] like Figure 4 and Figure 5As shown, the locking pin 360 of this application is mainly used to overcome the torque of the torsion spring 350 and keep the valve core 320 in the closed position. In this application, the locking pin 360 is an integral U-shaped structure, which mainly includes a stop section 362 and a force-bearing section 361. The upper ends of the stop section 362 and the force-bearing section 361 are connected by an arc-shaped transition section 363. Both the force-bearing section 361 and the stop section 362 are vertically arranged and can move relative to the valve body 310 along the first axis direction, that is, they can move up and down.

[0042] The force-bearing section 361 is vertically and movably mounted on the partition 140 via a linear bearing 141. By setting the linear bearing 141, the force-bearing section 361 can move more smoothly in the vertical direction.

[0043] The locking pin 360 switches between locked and unlocked states by moving vertically (i.e., moving along the first axis).

[0044] In the locked state, such as Figure 4 As shown, the stop section 362 is located in the rotation path of the stop lever and blocks the stop lever to limit the valve core 320 from rotating to the open position. Figure 4 Taking the viewing direction as an example, at this time, the valve core 320 is in the closed position, and the torsion spring 350 applies a force to the valve core 320, forcing the valve core 320 to rotate to the right. The stop section 362 is inserted into the right side of the stop lever, preventing the stop lever from rotating to the right, that is, preventing the valve core 320 from rotating to the open position.

[0045] In the unlocked state, such as Figure 5 As shown, the stop section 362 is lifted upward and moved away from the rotation path of the stop lever to release the obstruction of the stop section 362. At this time, the valve core 320 will rotate to the right under the torque drive of the torsion spring 350, that is, the valve core 320 will rotate towards the open position and finally enter the open position, thus opening the valve 300.

[0046] In addition, such as Figure 4 and Figure 5 As shown, in order to further guide the vertical movement of the stop section 362, an I-beam wheel 370 is installed on the valve seat 330. The I-beam wheel 370 is located on the upper side of the guide groove 331 and on the right side of the stop section 362. The stop section 362 is located in the groove of the I-beam wheel 370 and is right-limited by the I-beam wheel 370.

[0047] In order to reduce the friction of the stop section 362 when it moves vertically relative to the stop rod, in this application, a guide wheel 342 (e.g., a bearing) is rotatably connected to the stop rod. In the locked state, the stop section 362 abuts against the outer peripheral wall of the guide wheel 342. Thus, when the stop section 362 moves vertically relative to the stop rod 341, the guide wheel 342 can rotate, which is equivalent to changing sliding friction into rolling friction, thereby reducing the friction.

[0048] The control system provided in this application is mainly used to control the opening of valve 300. Specifically, the control system in this application mainly achieves the opening of valve 300 indirectly by controlling the unlocking of locking pin 360.

[0049] like Figure 4 and Figure 5 As shown, the control system of this application also includes a drive component 420 and a thermal actuation element.

[0050] In this embodiment, a sleeve 500 is fixedly installed on a partition 140 inside the electrical room 120. The drive component 420 and the thermal actuation element are both fixed on the sleeve 500; and the force-bearing section 361 of the locking pin 360 extends into the sleeve 500.

[0051] A thermally actuated element is a component that can be actuated by deformation when the temperature reaches a set operating temperature. In this application, the thermally actuated element is a shape memory alloy spring 410, specifically a nickel-titanium shape memory alloy spring 410. Its set operating temperature (i.e., the austenitic phase transformation termination temperature Af) is 75℃-95℃, for example, 85℃. When the shape memory alloy spring 410 is below the set operating temperature, it is in a contracted state. When the ambient temperature reaches the set operating temperature, the shape memory alloy spring 410 undergoes a phase transformation and elongates to push the force-bearing section 361 upward to unlock the locking pin 360.

[0052] For example, the shape memory alloy spring 410 is vertically installed inside the sleeve 500, and the lower end of the force-bearing section 361 is fixedly connected to the push plate 364. The lower end of the shape memory alloy spring 410 is fixed or directly placed in the inner bottom of the sleeve 500, and the upper end of the shape memory alloy spring 410 abuts against the bottom wall of the push plate 364, that is, the push plate 364 is located on the upper end of the shape memory alloy spring 410.

[0053] Furthermore, the thermally actuated element is at least partially exposed within the electrical chamber 120 to more sensitively sense changes in ambient temperature within the electrical chamber 120. For example, several openings 510 are provided on the outer peripheral wall of the sleeve 500, connecting the electrical chamber 120 and the internal space of the sleeve 500. When the temperature rises within the electrical chamber 12012 due to a fire, the shape memory alloy spring 410 can quickly sense the temperature change and respond accordingly.

[0054] The drive component 420 is fixedly mounted on the sleeve 500 and is arranged vertically. The drive component 420 is a component that can extend and retract along the first axis direction. It drives the stop section 362 to unlock by pushing the force-receiving section 361 to move along the first axis direction (i.e., pushing upward).

[0055] The drive component 420 can be an electromagnet-driven telescopic push rod, or it can be a linear drive element known in the art, such as a motor-driven telescopic component or a cylinder-driven telescopic component.

[0056] The control system has a first control mode and a second control mode, and the valve 300 can be opened independently by either the first control mode or the second control mode.

[0057] In the first control mode (i.e., when the control system is powered on), the temperature sensor and smoke sensor monitor the environmental parameters inside the electrical room 120 in real time. When the temperature value detected by the temperature sensor exceeds its preset threshold (e.g., 70°C) and the smoke concentration value detected by the smoke sensor exceeds its preset threshold, the controller determines that a fire has occurred in the electrical room 120 and sends an action command to the drive component 420. The drive component 420 extends and pushes the force-bearing section 361 upward along the first axis, causing the locking pin 360 to switch from the locked state to the unlocked state. The valve core 320 rotates to the open position under the drive of the first elastic element (torsion spring 350), the valve 300 opens, and the extinguishing medium in the fire extinguisher 200 is released into the electrical room 120 through the output pipeline 210 to extinguish the fire.

[0058] In the second control mode (i.e., when the control system is powered off), the drive component 420 cannot operate due to the power failure. At this time, if a fire occurs in the electrical room 120, the ambient temperature continues to rise. When the temperature reaches the set operating temperature (85°C) of the thermal actuator (memory alloy spring 410), the thermal actuator (memory alloy spring 410) elongates due to heat, pushing the force-bearing section 361 upward along the first axis, causing the locking pin 360 to switch from the locked state to the unlocked state. Driven by the first elastic element, the valve core 320 rotates to the open position, the valve 300 opens, and the extinguishing medium in the fire extinguisher 200 is released into the electrical room 12012 through the output pipeline 210 to extinguish the fire.

[0059] It should be noted that the set operating temperature of the thermal actuator is higher than the preset threshold of the temperature sensor, preferably with a temperature gradient of 15°C between the two. This design ensures that when the control system is powered normally, the electronic control mode (first control mode) takes precedence over the mechanical mode (second control mode); the mechanical mode only intervenes when the electronic control mode fails to operate due to a power outage and the temperature continues to rise to a higher level. The two modes do not interfere with each other, and the logic is clear.

[0060] Example 2 This embodiment further provides a power distribution cabinet with real-time safety detection function based on embodiment 1. The difference from embodiment 1 is the addition of a safety mechanism 600. The safety mechanism 600 is configured to lock the locking pin 360 when the cabinet door 130 is open, preventing the locking pin 360 from unlocking, and to release the unlocking restriction on the locking pin 360 when the cabinet door 130 is closed. Specifically: Figure 6A partial structural schematic diagram of the electrical room 120 of this application is shown, illustrating the structure at the location of the safety mechanism 600. Figure 7 This application shows Figure 6 Enlarged view of part A in the middle.

[0061] like Figure 6 and Figure 7 As shown, the safety mechanism 600 includes a side rod 620, a swing arm 610, and a second elastic element. The side rod 620 is fixed to the force-bearing section 361 of the locking pin 360 and extends to the side of the force-bearing section 361. It moves along the first axis direction with the force-bearing section 361, that is, it moves up and down.

[0062] A swing arm 610 is located in the electrical room 120 and is rotatably connected to a partition 140 about a second axis. The second axis is parallel to the first axis, meaning that the swing arm 610 can rotate horizontally on the partition 140. The swing arm 610 switches between a first state and a second state by rotating. The swing arm 610 forms a trigger section 612 and a limit section 611 with the second axis as the boundary.

[0063] Figure 8 This shows a top view of the insurance institution 600 in this application. Figure 1 This illustrates the structure of the insurance mechanism 600 when the swing arm 610 is in the first state; Figure 9 This shows a top view of the insurance institution 600 in this application. Figure 2 The illustration mainly depicts the structure of the insurance institution 600 in the second state of the arm.

[0064] In the first state, such as Figure 8 As shown, when the cabinet door 130 is open, the limiting section 611 is at least partially located above the side rod 620 to prevent the side rod 620 from moving upward (i.e., to prevent the locking pin 360 from moving in the unlocking direction). At the same time, the trigger section 612 protrudes at least partially from the front side of the electrical compartment 120, that is, it extends from the front side wall of the electrical compartment 120 (the wall facing the cabinet door 130) to allow the cabinet door 130 to be pressed when closed; for example, a through clearance opening is provided on the front side wall of the electrical compartment 120, and the trigger section 612 extends through the clearance opening.

[0065] In the second state, such as Figure 9 As shown, when the cabinet door 130 is closed, the limiting section 611 deviates from the side rod 620 to avoid the side rod 620, and the side rod 620 can move freely upward (that is, the locking pin 360 can move freely in the unlocking direction).

[0066] The second elastic element provides elastic force, ensuring that the swing arm 610 always tends to switch to the first state. In this embodiment, the second elastic element is a tension spring 630. One end of the tension spring 630 is fixed to the trigger section 612, and the other end is fixed to the front side wall of the partition 140 or the electrical chamber 120. The tension spring 630 applies an elastic tension to the trigger section 612, ensuring that the swing arm 610 always tends to switch to the first state.

[0067] The working principle of insurance institutions' 600 numbers is as follows: When cabinet door 130 is in the open state (e.g.) Figure 8 As shown), the swing arm 610 is in the first state under the action of the tension spring 630. At this time, the limiting section 611 is located on the upper side of the side rod 620, forming a mechanical block. Even if the drive component 420 is activated or the thermal actuator extends to push the force-bearing section 361, the locking pin 360 cannot move upward to the unlocked position. At the same time, the trigger section 612 protrudes from the front side of the electrical compartment 120.

[0068] When cabinet door 130 is closed (e.g.) Figure 9 As shown, the inner side of the cabinet door 130 presses against the trigger section 612, overcoming the elastic force of the second elastic element, causing the swing arm 610 to rotate around the second axis, switching from the first state to the second state. In the second state, the limiting section 611 deviates from the side rod 620, releasing the obstruction to the side rod 620, allowing the side rod 620 to move freely upward. At this time, the locking pin 360 can unlock normally in response to the drive component 420 or the thermal actuator.

[0069] The safety mechanism 600 is designed with the personal safety of maintenance personnel in mind. When maintenance personnel open cabinet door 130 for repair work, the safety mechanism 600 automatically locks the latch 360 to prevent the fire extinguisher 200 from accidentally spraying due to any reason (including sensor false alarms, accidental contact, circuit failure, etc.) while cabinet door 130 is open, thus avoiding direct spraying of extinguishing agents onto maintenance personnel. Once maintenance is completed and cabinet door 130 is closed, the safety mechanism 600 automatically unlocks, and the fire extinguishing device returns to normal standby status. The entire operation of the safety mechanism 600 depends entirely on the opening and closing status of cabinet door 130, requiring no additional power or manual operation, ensuring high reliability.

[0070] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0072] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A power distribution cabinet with real-time safety detection function, characterized in that, include: The cabinet includes a fire extinguishing chamber and an electrical room, with the fire extinguishing chamber located on top of the electrical room; the cabinet is equipped with an openable and closable door. A fire extinguisher, located in a fire extinguishing room, has an output pipe, the output end of which is connected to an electrical room; A detection unit, located in the electrical room, is used to detect environmental parameters in the electrical room in real time. The detection unit includes at least a smoke sensor and a temperature sensor. A valve, located on the output pipeline, is used to control the opening and closing of the output pipeline; A control system for controlling the opening of a valve, the control system having a first control mode and a second control mode, the valve being able to be opened independently by either the first control mode or the second control mode: In the first control mode, when the temperature value detected by the temperature sensor and the smoke concentration value detected by the smoke sensor both exceed their respective preset thresholds, a driving component controls the valve to open. In the second control mode, when the temperature inside the electrical room reaches a set operating temperature, the valve is opened by a thermally actuated element, wherein the set operating temperature is greater than the set threshold of the temperature sensor.

2. A power distribution cabinet with real-time safety detection function according to claim 1, characterized in that, The valve includes a valve body, a valve core, a first elastic element, and a locking pin. The valve core is rotatable relative to the valve body about a first axis to switch between a closed position and an open position; The first elastic element is used to provide elastic force so that the valve core always has a tendency to rotate from the closed position to the open position; The locking pin has a locked state and a locked state: In the locked state, the locking pin restricts the valve core from rotating to the open position; In the unlocked state, the locking pin releases the valve core from its restraint, and the valve core rotates to the open position under the action of the first elastic element; The locking pin can be driven by either the driving component or the thermally actuated element to switch from the locked state to the unlocked state.

3. A power distribution cabinet with real-time safety detection function according to claim 2, characterized in that, The valve core is fixedly connected to a stop rod that is perpendicular to the first axis; The locking pin has a stop section, which is arranged along the first axis direction and is movable along the first axis direction; In the locked state, the stop section is located in the rotation path of the stop rod and blocks the stop rod to restrict the valve core from rotating to the open position; In the unlocked state, the stop section deviates from the rotation path of the stop lever to avoid it.

4. A power distribution cabinet with real-time safety detection function according to claim 3, characterized in that, The stop bar is equipped with a rotatable guide wheel. In the locked state, the stop section abuts against the outer peripheral wall of the guide wheel.

5. A power distribution cabinet with real-time safety detection function according to claim 3, characterized in that, The locking pin also includes a force-bearing section that remains relatively fixed to the stop section; the force-bearing section extends along the first axis; when the thermal actuation element operates in response to the temperature reaching the set operating temperature, the thermal actuation element pushes the force-bearing section to move along the first axis, thereby causing the stop section to deviate from the rotation path of the stop lever.

6. A power distribution cabinet with real-time safety detection function according to claim 5, characterized in that, The driving component is a component capable of telescopic movement along the first axis direction. It drives the stop section to unlock by pushing the force-bearing section along the first axis direction.

7. A power distribution cabinet with real-time safety detection function according to claim 3, characterized in that, It also includes an insurance mechanism configured to lock the latch when the cabinet door is open to prevent the latch from unlocking, and to release the unlocking restriction when the cabinet door is closed.

8. A power distribution cabinet with real-time safety detection function according to claim 7, characterized in that, The insurance institutions mentioned include: Side rod, fixed with locking pin; A swing arm, located in the electrical compartment, is rotatable around a second axis to switch between a first state and a second state. The second axis is parallel to the first axis. The swing arm forms a trigger section and a limiting section with the second axis as the boundary. In the first state, the limiting section is at least partially located on the upper side of the side rod to prevent the side rod from moving upward, and the trigger section at least partially protrudes from the front side of the electrical compartment to be squeezed by the cabinet door. In the second state, the trigger section is offset from the side rod to avoid the side rod. The second elastic element provides elastic force so that the swing arm always tends to switch to the first state; when the cabinet door is closed, the cabinet door presses the trigger segment to make the swing arm rotate, forcing the swing arm to switch to the second state.

9. A power distribution cabinet with real-time safety detection function according to claim 1, characterized in that, The thermally actuated element is a shape memory alloy spring, and the set operating temperature is 75℃-95℃.

10. A power distribution cabinet with real-time safety detection function according to claim 1, characterized in that, The thermally actuated element is at least partially exposed in the electrical compartment.

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