Intelligent control device for preventing override trip of through-current and voltage-through equipment

Abstract

The invention relates to the technical field of power systems, and discloses an intelligent control device for preventing override trip of through-current and voltage-through equipment, which comprises a bracket, a control cabinet is fixedly connected to the top of the bracket, a cabinet door is mounted on the front side of the control cabinet, and a protective rear shell is fixedly connected to the rear side wall of the control cabinet; two ventilation openings are symmetrically formed in the two sides of the control cabinet. A plugging part is mounted on the outer side of the control cabinet; the blocking part is used for blocking the ventilation opening when a fire occurs in the control cabinet; the extending part is used for extending into the control cabinet to extinguish fire when a fire occurs in the control cabinet; the ventilation opening is blocked through the blocking part when a fire occurs in the control cabinet, and the blocking plate is turned over under the action of the transmission part and is tightly attached to the side wall of the control cabinet to isolate external air, so that the fire is isolated in the control cabinet, the risk that the fire spreads to damage peripheral equipment is reduced, and the service life of the control cabinet is prolonged. And fire accidents are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of power systems, and in particular to an intelligent control device for preventing flow and pressure equipment from tripping beyond the specified level. Background Art

[0002] In the power system, the over-tripping of the current-carrying equipment means that when a short circuit, overload or other faults occur in a local area, the protection device near the fault point should be activated to cut off the circuit. However, due to reasons such as excessive fault current, unreasonable setting of the protection device or delayed detection of the fault point, the upper-level protection device closer to the power supply end and with a larger protection range is activated and tripped first. This situation will cause the expansion of the fault area and increase the scope of unnecessary power outages, seriously affecting the stability and power supply reliability of the power system, and may even trigger a chain reaction, threatening the safe operation of the entire power network. To solve this problem, the existing technology widely uses control cabinets as core protection equipment, which integrate a variety of electrical equipment with different functions. Through precise collaborative work, a complete protection system is built. Circuit breakers and fuses can quickly cut off the circuit when the current is overloaded or short-circuited. Relays accurately control the on and off of the circuit according to changes in current and voltage. Contactors are responsible for normal start and stop of equipment and abnormal power outages. Current transformers and voltage transformers provide accurate signals for measurement and protection equipment. Voltmeters and ammeters help operators monitor in real time. Alarm equipment such as signal lights and bells promptly feedback faults. PLCs process signals through intelligent analysis to achieve selective tripping of equipment. Through close cooperation between various devices, the control cabinet can quickly locate the fault point and accurately control the action of the protection device, effectively avoiding over-tripping of flow and pressure equipment, and ensuring safe and stable operation of the power system.

[0003] However, the control cabinet is densely populated with equipment. During long-term operation, electrical components are prone to problems such as arcing, overload heating, and insulation aging due to poor contact. Sparks generated by frequent operation of circuit breakers and contactors, increased contact resistance caused by oxidation of relay contacts, and poor heat dissipation of PLC control modules may all lead to local temperature increases. Once the temperature reaches the ignition point of combustible materials such as insulating materials and line sheaths, it is very easy to cause fire accidents. These potential fire risks seriously threaten the safe and stable operation of the power system. Once a fire occurs in the control cabinet, as the fire spreads, it will damage the surrounding equipment and cause a major safety accident. Therefore, how to effectively reduce the harm caused by control cabinet fires to surrounding equipment has become a key technical issue that needs to be urgently solved in the field of power systems. Summary of the invention

[0004] In view of the problems existing in the prior art, an intelligent control device for preventing flow pressure equipment from tripping beyond the level is proposed.

[0005] The technical solution of the present invention is: an intelligent control device for preventing over-tripping of a flow pressure device, comprising a bracket, a control cabinet is fixedly connected to the top of the bracket, a cabinet door is installed on the front side of the control cabinet, and a protective rear shell is fixedly connected to the rear side wall of the control cabinet; Two ventilation holes are symmetrically provided on both sides of the control cabinet; A blocking component is installed on the outside of the control cabinet; a protruding component is installed in the protective rear shell; and a fire extinguishing starting component is installed on the protruding component; The blocking component is used to block the ventilation opening when a fire occurs inside the control cabinet; The extending member is used to extend into the control cabinet to extinguish the fire when a fire occurs inside the control cabinet; The fire extinguishing start-up component is used to deliver the fire extinguishing agent used to extinguish the fire inside the control cabinet into the extending component. Furthermore, a dust filter is fixedly installed on the inner side of the ventilation opening, and the blocking component includes a blocking assembly, which is arranged in a one-to-one correspondence with the ventilation opening, and the blocking assembly is installed on the side wall of the control cabinet, and a transmission component is installed on the blocking assembly.

[0006] Furthermore, two of the blocking components are symmetrically arranged on both sides of the control cabinet, and the blocking components include a blocking plate, which is arranged corresponding to the vent, and a transverse rotation axis is fixedly connected to the blocking plate, and the transverse rotation axis is rotatably connected to the outer wall of the control cabinet, and one end of the transverse rotation axis extends into the protective rear shell and is fixedly connected to a rotating cylinder.

[0007] Furthermore, the transmission component includes a transmission rod, two of which are symmetrically arranged, and the two transmission rods are arranged one-to-one corresponding to the two rotating cylinders. One end of the transmission rod is fixedly connected to a guide column, and a transverse guide groove and a spiral guide groove are opened on the outer wall of the rotating cylinder. One end of the transverse guide groove is connected to one end of the spiral guide groove, and the guide column extends into the corresponding spiral guide groove.

[0008] Furthermore, a through hole is transversely opened on the rear side wall of the control cabinet, and the extending component includes an extending component, which is installed in a protective rear shell, and a driving component is installed on the extending component.

[0009] Further, the extending component includes a transverse moving pipe which is slidably connected in the perforation. A fire extinguishing agent storage tank is fixedly connected inside the protective rear shell. A communicating box body is fixedly connected to the inner top of the fire extinguishing agent storage tank. A vertical pipe communicates with the bottom of the communicating box body. A communicating hose communicates with the top of the communicating box body. The top end of the communicating hose passes through the fire extinguishing agent storage tank and extends to the outside and then communicates with one end of the transverse moving pipe. A plurality of nozzle openings are circumferentially arrayed on the outer circumference of the other end of the transverse moving pipe. The nozzle openings communicate with the inside of the transverse moving pipe. The other end of the transmission rod is fixedly connected to the outer wall of the transverse moving pipe.

[0010] Further, the driving component includes a transverse slide rail. One end of the transverse slide rail is fixedly connected to the rear side wall of the control cabinet. The other end of the transverse slide rail is fixedly connected to a fixed side plate. A motor is fixedly installed on one side of the fixed side plate. A threaded rod is rotatably connected to the rear side wall of the control cabinet. One end of the threaded rod passes through the fixed side plate and is fixedly connected to the rotating end of the motor. A sliding block is horizontally penetrated and sleeved on the threaded rod. The sliding block is slidably connected to the transverse slide rail. A pushing block is fixedly connected to the bottom of the sliding block. A first inclined portion is provided on the pushing block. An avoidance notch is opened in the lower part of the pushing block.

[0011] Further, the fire extinguishing starting component includes a piercing component which is installed on the extending component, and an opening component is installed on the piercing component.

[0012] Further, the piercing component includes a vertical sliding rod. The bottom end of the vertical sliding rod is fixedly connected to the top of the fire extinguishing agent storage tank. A bearing and pushing block is longitudinally penetrated and sleeved on the vertical sliding rod. A second inclined portion is provided on the bearing and pushing block. A puncture needle is fixedly connected to the bottom of the bearing and pushing block. The bottom end of the puncture needle passes through the fire extinguishing agent storage tank and extends into it. A spring is sleeved on the outer side of the puncture needle. The top end of the spring is fixedly connected to the bottom of the bearing and pushing block. The bottom end of the spring is fixedly connected to the top of the fire extinguishing agent storage tank.

[0013] Further, the opening component includes a sealing valve plate which is horizontally penetrated and slidably connected in the communicating box body. A communicating hole is longitudinally penetrated in the sealing valve plate. Two guiding blocks are symmetrically fixedly connected to one side of the sealing valve plate after extending out of the communicating box body. An inclined guiding groove is penetrated in the guiding block. A nitrogen storage tank is fixedly connected to the upper part of the inner side wall of the fire extinguishing agent storage tank. A sealing diaphragm is fixedly connected to the opening at the top of the nitrogen storage tank in a sealing manner. The nitrogen storage tank is filled with high-pressure nitrogen. A transverse column corresponding to the inclined guiding groove is fixedly connected to the rod wall of the puncture needle. One end of the transverse column extends into the corresponding inclined guiding groove.

[0014] The beneficial effects of the present invention: In the present invention, when a fire breaks out inside the control cabinet, the ventilation openings are blocked by the blocking components. The blocking plate flips under the action of the transmission components and closely adheres to the side wall of the control cabinet, isolating the external air, preventing it from flowing into the control cabinet to fuel the fire, reducing the risk of the fire spreading, and effectively preventing the external air from entering the control cabinet to assist in burning the flame, so as to isolate the fire inside the control cabinet, thereby reducing the risk of damage to surrounding equipment caused by the spread of the fire and reducing the occurrence of fire accidents.

[0015] In the extending component, the transverse moving pipe accurately extends into the control cabinet under the action of the driving assembly. When a fire breaks out in the control cabinet, the motor drives the threaded rod to rotate, causing the sliding block to slide on the transverse slide rail, and then pushing the transverse moving pipe to move in the through hole. Such a design can ensure that the nozzle opening at the other end of the transverse moving pipe can reach the middle position inside the control cabinet, allowing the fire extinguishing agent to be sprayed more widely to cover the fire source and improving the fire extinguishing effect. In the non-fire extinguishing state, the motor rotates in the reverse direction, which can drive the transverse moving pipe to move backward, retracting the nozzle opening into the through hole. This retractable design avoids the transverse moving pipe being exposed inside the control cabinet for a long time and prevents it from hindering the daily inspection and maintenance work. When the operator checks or repairs the equipment inside the control cabinet, there is no need to worry about being interfered by the transverse moving pipe, improving the convenience of the maintenance work.

[0016] Through the mutual cooperation of the piercing component and the opening component in the fire extinguishing starting component, the reliable start of the fire extinguishing process is ensured. When the pushing block moves, its first inclined part presses the supporting block, causing the supporting block to slide downward along the vertical sliding rod, driving the puncture needle to pierce the sealing diaphragm on the top of the nitrogen storage tank, releasing high-pressure nitrogen. At the same time, the transverse column on the puncture needle moves in the inclined guiding groove, driving the blocking valve plate to slide, aligning the communication hole with the communication hose and the vertical pipe. Using the high-pressure nitrogen in the nitrogen storage tank as power, the dry powder fire extinguishing agent in the fire extinguishing agent storage tank is quickly sprayed. The high-pressure nitrogen can form a strong pressure difference in a short time, allowing the dry powder fire extinguishing agent to quickly enter the transverse moving pipe through the vertical pipe, the communication hole and the communication hose and be sprayed out at high speed from the nozzle opening, thereby realizing the rapid fire extinguishing inside the control cabinet. Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure at the control cabinet of the present invention; Figure 3 It is a schematic diagram of the structure after the protective rear shell is removed in the present invention; Figure 4 It is a schematic diagram of the structure at the blocking component of the present invention; Figure 5 It is a schematic diagram of the structure at the transmission rod of the present invention; Figure 6 It is a schematic diagram of the structure at the extending component of the present invention; Figure 7 is the overall sectional view of the present invention; Figure 8 is the structural schematic diagram of the fixed side plate in the present invention; Figure 9 is the structural schematic diagram of the pushing block in the present invention; Figure 10 is the sectional view of the fire extinguishing starting component in the present invention; Figure 11 is the structural schematic diagram of the piercing assembly in the present invention.

[0018] As shown in the figure: 1, support; 2, control cabinet; 3, cabinet door; 4, protective rear shell; 5, ventilation opening; 6, dust-proof filter screen; 7, blocking component; 71, blocking assembly; 711, blocking plate; 712, horizontal rotating shaft; 713, rotating cylinder; 72, transmission component; 721, transmission rod; 722, guiding column; 723, horizontal guiding groove; 724, spiral guiding groove; 8, extending component; 81, extending assembly; 811, transverse moving pipe; 812, nozzle opening; 813, connecting hose; 814, connecting box body; 815, fire extinguishing agent storage tank; 816, vertical pipe; 82, driving assembly; 821, horizontal sliding rail; 822, threaded rod; 823, fixed side plate; 824, motor; 825, sliding block; 826, pushing block; 827, first inclined part; 828, avoiding notch; 9, fire extinguishing starting component; 91, piercing assembly; 911, vertical sliding rod; 912, bearing block; 913, second inclined part; 914, puncture needle; 915, spring; 92, opening component; 921, blocking valve plate; 922, communication hole; 923, guiding block; 924, inclined guiding groove; 925, nitrogen storage tank; 926, sealing diaphragm; 927, horizontal column; 10, perforation. Detailed implementation manners

[0019] To make the above objects, features and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific implementation manners of the present invention in conjunction with the drawings of the specification. Embodiment

[0020] Refer to Figures 1 to 6, which is the first embodiment of the present invention, provides an intelligent control device for preventing overstepping tripping of current-carrying and voltage-bearing equipment. It includes a bracket 1, and a control cabinet 2 is fixedly connected to the top of the bracket 1. The electrical equipment for preventing overstepping tripping of current-carrying and voltage-bearing equipment is installed on the mounting rack inside the control cabinet 2. A threading pipe is provided at the bottom of the control cabinet 2 for the wire to pass through and connect with external equipment, and the gap between the threading pipe and the wire is sealed and filled. A cabinet door 3 is installed on the front side of the control cabinet 2. The cabinet door 3 is a prior art and can be opened and closed. After being closed, it has good sealing performance with the control cabinet 2. A protective rear shell 4 is fixedly connected to the rear side wall of the control cabinet 2; two ventilation openings 5 are symmetrically opened on both sides of the control cabinet 2; a blocking component 7 is installed outside the control cabinet 2; an extending component 8 is installed inside the protective rear shell 4; a fire extinguishing starting component 9 is installed on the extending component 8; the blocking component 7 is used to block the ventilation openings 5 when a fire occurs inside the control cabinet 2; the extending component 8 is used to extend into the control cabinet 2 to extinguish the fire when a fire occurs inside the control cabinet 2; the fire extinguishing starting component 9 is used to convey the fire extinguishing agent for extinguishing the fire inside the control cabinet 2 into the extending component 8. A smoke sensor is installed inside the control cabinet 2, and the smoke sensor is electrically connected to an external control system.

[0021] In the above, the protective rear shell 4 is used to enclose and protect the various components installed on the rear side of the control cabinet 2 inside, and the protective rear shell 4 is detachably and fixedly installed on the rear side wall of the control cabinet 2. When a fire occurs inside the control cabinet 2 and generates smoke, the smoke sensor can collect the smoke information and feedback it to the external control system, and the operator makes a response and starts the device to perform the fire extinguishing operation.

[0022] Further, a dust-proof filter screen 6 is fixedly installed inside the ventilation opening 5. The blocking component 7 includes a blocking assembly 71. The blocking assemblies 71 are arranged in one-to-one correspondence with the ventilation openings 5. The blocking assemblies 71 are installed on the side walls of the control cabinet 2, and a transmission component 72 is installed on the blocking assemblies 71; two blocking assemblies 71 are symmetrically arranged on both sides of the control cabinet 2. The blocking assembly 71 includes a blocking plate 711. The blocking plate 711 corresponds to the ventilation opening 5. A horizontal rotating shaft 712 is fixedly connected to the blocking plate 711. The horizontal rotating shaft 712 is rotatably connected to the outer wall of the control cabinet 2. One end of the horizontal rotating shaft 712 extends into the protective rear shell 4 and is fixedly connected to a rotating cylinder 713.

[0023] In the above, the dust-proof filter screen 6 is fixedly installed inside the ventilation opening 5. When external air enters the control cabinet 2 through the ventilation opening 5, the dust-proof filter screen 6 filters the dust particles in the air, reduces the dust entering the inside of the control cabinet 2, reduces the pollution to the electrical equipment, and ensures the normal operation of the equipment.

[0024] In the above, when the transmission rod 721 moves, the guiding column 722 at one end of the transmission rod 721 moves within the spiral guiding groove 724 on the outer wall of the rotating cylinder 713. Due to the cooperation between the guiding column 722 and the spiral guiding groove 724, the rotating cylinder 713 rotates accordingly. The rotating cylinder 713 drives the blocking plate 711 to rotate synchronously through the horizontal rotating shaft 712. When the blocking plate 711 flips 180°, it will closely adhere to the side wall of the control cabinet 2. To improve the blocking performance, a high-temperature resistant rubber gasket can be provided on one side of the blocking plate 711 and the control cabinet 2 to block the ventilation opening 5, thereby isolating the external air and preventing it from flowing into the control cabinet 2 to fuel the fire.

[0025] Further, the transmission component 72 includes a transmission rod 721. Two transmission rods 721 are symmetrically arranged, and the two transmission rods 721 are arranged in one-to-one correspondence with the two rotating cylinders 713. One end of the transmission rod 721 is fixedly connected with a guiding column 722. A horizontal guiding groove 723 and a spiral guiding groove 724 are formed on the outer wall of the rotating cylinder 713. One end of the horizontal guiding groove 723 communicates with one end of the spiral guiding groove 724. The guiding column 722 extends into the corresponding spiral guiding groove 724, and the guiding column 722 is adapted to both the horizontal guiding groove 723 and the spiral guiding groove 724.

[0026] In the above, during a fire, when the transmission rod 721 moves horizontally, the guiding column 722 moves within the spiral guiding groove 724 of the rotating cylinder 713, pushing the rotating cylinder 713 to rotate, realizing the flipping of the blocking plate 711 to block the ventilation opening 5. When the guiding column 722 enters the horizontal guiding groove 723, the rotating cylinder 713 stops rotating, and the blocking plate 711 maintains the blocking state. Embodiment

[0027] Further, referring to Figures 1 to 10 , on the basis of Embodiment 1, a through hole 10 is horizontally penetrated through the rear side wall of the control cabinet 2. The extending component 8 includes an extending assembly 81. The extending assembly 81 is installed in the protective rear shell 4, and a driving assembly 82 is installed on the extending assembly 81; the extending assembly 81 includes a transverse moving pipe 811. The transverse moving pipe 811 is slidably connected in the through hole 10. A fire extinguishing agent storage tank 815 is fixedly connected in the protective rear shell 4. The fire extinguishing agent storage tank 815 is filled with dry powder fire extinguishing agent. A communicating box body 814 is fixedly connected to the inner top of the fire extinguishing agent storage tank 815. A vertical pipe 816 communicates with the bottom of the communicating box body 814. A communicating hose 813 communicates with the top of the communicating box body 814. The communicating hose 813 can be a rubber hose or a nylon braided hose. The top end of the communicating hose 813 passes through the fire extinguishing agent storage tank 815 and extends to the outside and then communicates with one end of the transverse moving pipe 811. The other end of the transverse moving pipe 811 is closed, and a plurality of nozzle openings 812 are circumferentially arranged on the outer side of the other end of the transverse moving pipe 811. The nozzle openings 812 are communicated with the inside of the transverse moving pipe 811. The other end of the transmission rod 721 is fixedly connected to the outer wall of the transverse moving pipe 811.

[0028] As described above, the transmission rod 721 pushes the transverse pipe 811 to slide in the through hole 10. The dry powder fire extinguishing agent in the fire extinguishing agent storage tank 815, under the action of the fire extinguishing start component 9, enters the transverse pipe 811 through the vertical pipe 816, the connecting box body 814, and the connecting hose 813, and finally sprays out from the nozzle openings 812 arranged in a circumferential array at the other end of the transverse pipe 811 and enters the control cabinet 2 for fire extinguishing. When fire extinguishing is not required, the transverse pipe 811 moves backward, and the nozzle openings 812 retract into the through hole 10 to avoid interfering with the maintenance work inside the control cabinet 2.

[0029] Furthermore, the driving assembly 82 includes transverse slide rails 821. There are two transverse slide rails 821 arranged symmetrically. One end of the transverse slide rail 821 is fixedly connected to the rear side wall of the control cabinet 2, and the other end of the transverse slide rail 821 is fixedly connected to a fixed side plate 823. A motor 824 is fixedly installed on one side of the fixed side plate 823. The motor 824 is electrically connected to an external control system. A threaded rod 822 is rotatably connected to the rear side wall of the control cabinet 2. One end of the threaded rod 822 passes through the fixed side plate 823 and is fixedly connected to the rotating end of the motor 824. A sliding block 825 is horizontally penetrated and sleeved with a thread on the threaded rod 822. The sliding block 825 is slidably connected to the transverse slide rail 821. The transverse slide rail 821 and the threaded rod 822 are arranged in parallel. A pushing block 826 is fixedly connected to the bottom of the sliding block 825. A first inclined portion 827 is provided on the pushing block 826. An avoidance notch 828 is opened at the lower part of the pushing block 826. The avoidance notch 828 is used to avoid components that interfere with the movement of the pushing block 826.

[0030] As described above, after the motor 824 is started, its rotating end drives the threaded rod 822 to rotate. Since the sliding block 825 is threadedly sleeved on the threaded rod 822 and is slidably connected to the transverse slide rail 821, the rotation of the threaded rod 822 causes the sliding block 825 to slide on the transverse slide rail 821. The sliding block 825 drives the pushing block 826 to move. On the one hand, the pushing block 826 drives the transverse pipe 811 to slide in the through hole 10 through the transmission rod 721, realizing the action of the extending component 8. On the other hand, the first inclined portion 827 on the pushing block 826 triggers the action of the fire extinguishing start component 9 during the movement. Embodiment

[0031] Furthermore, referring to Figures 1 to 11, on the basis of the second embodiment, the fire extinguishing activation component 9 includes a piercing component 91. The piercing component 91 is installed on the extending component 81, and an opening component 92 is installed on the piercing component 91. The piercing component 91 includes a vertical sliding rod 911. The bottom end of the vertical sliding rod 911 is fixedly connected to the top of the fire extinguishing agent storage tank 815. A thrust bearing block 912 is longitudinally penetrated and sleeved on the vertical sliding rod 911. A second inclined portion 913 is provided on the thrust bearing block 912. The second inclined portion 913 is correspondingly arranged and parallel to the first inclined portion 827. A puncture needle 914 is fixedly connected to the bottom of the thrust bearing block 912. The bottom end of the puncture needle 914 passes through the fire extinguishing agent storage tank 815 and extends into its interior. The puncture needles 914 maintain a sealed sliding fit with each other. The bottom end of the puncture needle 914 is of an inverted conical structure. A spring 915 is sleeved outside the puncture needle 914. The top end of the spring 915 is fixedly connected to the bottom of the thrust bearing block 912, and the bottom end of the spring 915 is fixedly connected to the top of the fire extinguishing agent storage tank 815.

[0032] In the above, when the pushing block 826 moves driven by the sliding block 825 and its first inclined portion 827 fits with the second inclined portion 913 of the thrust bearing block 912, as the pushing block 826 continues to move, the first inclined portion 827 slides along the second inclined portion 913 and presses the thrust bearing block 912, causing the thrust bearing block 912 to slide downward along the vertical sliding rod 911. The thrust bearing block 912 drives the puncture needle 914 to move downward. During this process, the spring 915 is compressed. When the puncture needle 914 pierces the sealing diaphragm 926 at the top of the nitrogen storage tank 925, the high-pressure nitrogen in the nitrogen storage tank 925 enters the fire extinguishing agent storage tank 815 to provide power for the spraying of the fire extinguishing agent.

[0033] Furthermore, the opening component 92 includes a blocking valve plate 921. The blocking valve plate 921 is horizontally penetrated and slidably connected in the communication box body 814, and a sealed sliding fit is maintained between the blocking valve plate 921 and the communication box body 814. A communication hole 922 is longitudinally penetrated through the blocking valve plate 921. After one side of the blocking valve plate 921 extends out of the communication box body 814, two guiding blocks 923 are symmetrically fixedly connected. An inclined guiding groove 924 is penetrated through the guiding blocks 923. A nitrogen storage tank 925 is fixedly connected to the upper inner side wall of the fire extinguishing agent storage tank 815. A sealing diaphragm 926 is fixedly connected to the opening at the top of the nitrogen storage tank 925 in a sealed manner. The sealing diaphragm 926 is a metal diaphragm and can be made of materials such as stainless steel and copper alloy metal. It has high strength, good pressure resistance performance and corrosion resistance ability, and can withstand the pressure exerted by high-pressure nitrogen. The nitrogen storage tank 925 is filled with high-pressure nitrogen. A cross column 927 corresponding to the inclined guiding groove 924 is fixedly connected to the rod wall of the puncture needle 914. One end of the cross column 927 extends into the corresponding inclined guiding groove 924. The height of the dry powder fire extinguishing agent filled in the fire extinguishing agent storage tank 815 is lower than the height of the position where the sealing diaphragm 926 is located.

[0034] In the above, when the puncture needle 914 moves downward with the pushing block 912, the cross column 927 on the rod wall of the puncture needle 914 moves in the inclined guide groove 924 of the guide block 923. Due to the movement of the cross column 927, the guide block 923 drives the sealing valve plate 921 to slide horizontally in the communication box body 814. When the top of the communication hole 922 on the sealing valve plate 921 corresponds to the communication hose 813 and the bottom corresponds to the vertical pipe 816, the dry powder fire extinguishing agent in the fire extinguishing agent storage tank 815 can enter the transverse pipe 811 through the vertical pipe 816, the communication hole 922, and the communication hose 813 under the action of high-pressure nitrogen, and then be ejected from the nozzle port 812 to extinguish the fire inside the control cabinet 2.

[0035] Refer to Figures 1 to 11 , the working principle of the present invention is as follows: During use, when a fire breaks out inside the control cabinet 2, the motor 824 is started. The rotating end of the motor 824 rotates to drive the threaded rod 822 to rotate. Under the threaded cooperation between the threaded rod 822 and the sliding block 825, and the cooperation of the sliding block 825 slidingly connected to the horizontal slide rail 821, the rotation of the threaded rod 822 drives the sliding block 825 to slide on the horizontal slide rail 821, causing the sliding block 825 to move towards the control cabinet 2. The sliding block 825 drives the transmission rod 721 to synchronously move the guide post 722. The guide post 722 moves within the spiral guide groove 724, thereby driving the rotating cylinder 713 to rotate through the movement of the guide post 722. The rotating cylinder 713 drives the horizontal rotating shaft 712 to rotate synchronously, and the horizontal rotating shaft 712 drives the sealing plate 711 to rotate synchronously, causing the sealing plate 711 to produce a flipping action. Until the sealing plate 711 flips 180°, it closely adheres to the side wall of the control cabinet 2 to block the ventilation opening 5, thereby separating the inside of the control cabinet 2 from the outside world, preventing external air from flowing into the control cabinet 2, achieving the isolation of external air, and thus preventing external air from flowing into the control cabinet 2 to assist combustion. At this time, the guide post 722 just enters the horizontal guide groove 723 from the spiral guide groove 724. The motor 824 continues to drive the threaded rod 822 to rotate, causing the sliding block 825 to continue to move towards the control cabinet 2. Driven by the sliding block 825, the guide post 722 moves along the horizontal guide groove 723. During the movement of the guide post 722 within the horizontal guide groove 723, the rotating cylinder 713 stops rotating, so that the sealing plate 711 remains stably pressed against the side wall of the control cabinet 2 to block the ventilation opening 5;Meanwhile, when the guide post 722 just enters the horizontal guide groove 723 from the spiral guide groove 724, the sliding block 825 just drives the avoidance notch 828 to move to correspond to the thrust block 912. At this time, the upper part of the first inclined portion 827 corresponds to and fits with the lower part of the second inclined portion 913. As the sliding block 825 drives the push block 826 to move, the first inclined portion 827 slides along the second inclined portion 913 and presses on the thrust block 912, causing the thrust block 912 to slide downward along the vertical slide rod 911. The thrust block 912 drives the puncture needle 914 to move downward. While driving the puncture needle 914 to move downward, it also drives the horizontal column 927 to move downward. The downward movement of the thrust block 912 elastically compresses the spring 915. The horizontal column 927 remains moving within the inclined guide groove 924. Under the guiding action of the inclined guide groove 924, the horizontal column 927 drives the guide block 923 to move away from the connecting box body 814. The guide block 923 drives the sealing valve plate 921 to slide horizontally until the top of the communication hole 922 corresponds to the communication hose 813 and the bottom corresponds to the vertical pipe 816. The sealing valve plate 921 no longer seals the bottom end of the communication hose 813 and the top end of the vertical pipe 816. At the same time, the puncture needle 914 moves downward to pierce the sealing diaphragm 926. The high-pressure nitrogen in the nitrogen storage tank 925 quickly enters the fire extinguishing agent storage tank 815 through the pierced pores, increasing the pressure in the fire extinguishing agent storage tank 815. As the pressure in the fire extinguishing agent storage tank 815 increases, the pressure in the fire extinguishing agent storage tank 815 is greater than the external pressure, forming a pressure difference. Under the action of the pressure difference, the dry powder fire extinguishing agent is pushed by the nitrogen, causing the dry powder fire extinguishing agent to enter the transverse moving pipe 811 through the vertical pipe 816, the communication hole 922, and the communication hose 813, and finally quickly spray out through the nozzle orifice 812, enter the control cabinet 2, and shoot at the fire source in the control cabinet 2, thus achieving the function of extinguishing the fire. And at this time, the transverse moving pipe 811 is driven by the sliding block 825 to make the nozzle orifice 812 extend into the middle position inside the control cabinet 2, so that the dry powder fire extinguishing agent is quickly sprayed out from the top, bottom, left, and right inside the control cabinet 2 to extinguish the fire. When not extinguishing the fire, the motor 824 rotates in the reverse direction, driving the transverse moving pipe 811 to move backward, so that the nozzle orifice 812 enters the through hole 10, which avoids the through hole 10 being directly exposed outside and also avoids the transverse moving pipe 811 extending into the control cabinet 2, causing interference to the operator during the maintenance of the inside of the control cabinet 2.;

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. An intelligent control device for preventing overstepping tripping of current-carrying and pressure-bearing equipment, comprising a bracket (1), a control cabinet (2) is fixedly connected to the top of the bracket (1), and a cabinet door (3) is installed on the front side of the control cabinet (2), characterized in that: A protective rear shell (4) is fixedly connected to the rear side wall of the control cabinet (2); Two ventilation openings (5) are symmetrically formed on both sides of the control cabinet (2); A blocking component (7) is installed on the outer side of the control cabinet (2); an extending component (8) is installed in the protective rear shell (4); a fire extinguishing starting component (9) is installed on the extending component (8); The blocking component (7) is used to block the ventilation openings (5) when a fire occurs inside the control cabinet (2); The extending component (8) is used to extend into the control cabinet (2) to extinguish the fire when a fire occurs inside the control cabinet (2); The fire extinguishing starting component (9) is used to convey a fire extinguishing agent for extinguishing the fire inside the control cabinet (2) into the extending component (8).

2. The intelligent control device for preventing the overstep tripping of the current and pressure passing equipment according to claim 1, characterized in that: A dust-proof filter screen (6) is fixedly installed on the inner side of the ventilation opening (5). The blocking component (7) includes a blocking assembly (71). The blocking assemblies (71) are arranged in one-to-one correspondence with the ventilation openings (5). The blocking assemblies (71) are installed on the side wall of the control cabinet (2), and a transmission component (72) is installed on the blocking assemblies (71).

3. The intelligent control device for preventing the overstep tripping of the current-carrying and pressure-bearing equipment according to claim 2, wherein: Two blocking assemblies (71) are symmetrically arranged on both sides of the control cabinet (2). The blocking assembly (71) includes a blocking plate (711). The blocking plate (711) corresponds to the ventilation opening (5). A transverse rotating shaft (712) is fixedly connected to the blocking plate (711). The transverse rotating shaft (712) is rotatably connected to the outer wall of the control cabinet (2). One end of the transverse rotating shaft (712) extends into the protective rear shell (4) and is fixedly connected to a rotating cylinder (713).

4. The intelligent control device for preventing the overstep tripping of the current-carrying and pressure-bearing equipment according to claim 3, wherein: The transmission component (72) includes transmission rods (721). Two transmission rods (721) are symmetrically arranged. The two transmission rods (721) are arranged in one-to-one correspondence with the two rotating cylinders (713). One end of the transmission rod (721) is fixedly connected to a guiding column (722). A transverse guiding groove (723) and a spiral guiding groove (724) are formed on the outer wall of the rotating cylinder (713). One end of the transverse guiding groove (723) communicates with one end of the spiral guiding groove (724). The guiding column (722) extends into the corresponding spiral guiding groove (724).

5. The intelligent control device for preventing the overstep tripping of the current and pressure passing equipment according to claim 4, characterized in that: A through hole (10) is horizontally penetrated through the rear side wall of the control cabinet (2). The extending component (8) includes an extending assembly (81). The extending assembly (81) is installed in the protective rear shell (4), and a driving component (82) is installed on the extending assembly (81).

6. The intelligent control device for preventing the overstepping tripping of the current and pressure passing equipment according to claim 5, characterized in that: The extending component (81) includes a transverse movement pipe (811) which is slidably connected within the perforation (10). A fire extinguishing agent storage tank (815) is fixedly connected within the protective rear shell (4). A communication box body (814) is fixedly connected to the inner top of the fire extinguishing agent storage tank (815). A vertical pipe (816) communicates with the bottom of the communication box body (814). A communication flexible pipe (813) communicates with the top of the communication box body (814). The top end of the communication flexible pipe (813) passes through the fire extinguishing agent storage tank (815) and extends to the outside and then communicates with one end of the transverse movement pipe (811). A plurality of nozzle openings (812) are circumferentially arrayed on the outer circumference of the other end of the transverse movement pipe (811). The nozzle openings (812) communicate with the inside of the transverse movement pipe (811). The other end of the transmission rod (721) is fixedly connected to the outer wall of the transverse movement pipe (811).

7. The intelligent control device for preventing over-tripping of flow pressure equipment according to claim 5, characterized in that: The driving component (82) includes a transverse sliding rail (821). One end of the transverse sliding rail (821) is fixedly connected to the rear side wall of the control cabinet (2). The other end of the transverse sliding rail (821) is fixedly connected to a fixed side plate (823). A motor (824) is fixedly installed on one side of the fixed side plate (823). A threaded rod (822) is rotatably connected to the rear side wall of the control cabinet (2). One end of the threaded rod (822) passes through the fixed side plate (823) and is fixedly connected to the rotating end of the motor (824). A sliding block (825) is horizontally penetrated and threadedly sleeved on the threaded rod (822). The sliding block (825) is slidably connected to the transverse sliding rail (821). A pushing block (826) is fixedly connected to the bottom of the sliding block (825). A first inclined portion (827) is provided on the pushing block (826). An avoidance notch (828) is formed in the lower part of the pushing block (826).

8. The intelligent control device for preventing the overstepping tripping of the current and pressure passing equipment according to claim 6, characterized in that: The fire extinguishing start component (9) includes a piercing component (91). The piercing component (91) is installed on the extending component (81). An opening component (92) is installed on the piercing component (91).

9. An intelligent control device for preventing over-tripping of flow pressure equipment according to claim 8, characterized in that: The piercing component (91) includes a vertical sliding rod (911). The bottom end of the vertical sliding rod (911) is fixedly connected to the top of the fire extinguishing agent storage tank (815). A bearing and pushing block (912) is longitudinally penetrated and slidably sleeved on the vertical sliding rod (911). A second inclined portion (913) is provided on the bearing and pushing block (912). A puncture needle (914) is fixedly connected to the bottom of the bearing and pushing block (912). The bottom end of the puncture needle (914) passes through the fire extinguishing agent storage tank (815) and extends into its interior. A spring (915) is sleeved outside the puncture needle (914). The top end of the spring (915) is fixedly connected to the bottom of the bearing and pushing block (912). The bottom end of the spring (915) is fixedly connected to the top of the fire extinguishing agent storage tank (815).

10. An intelligent control device for preventing over-tripping of flow pressure equipment according to claim 9, characterized in that: The opening component (92) includes a blocking valve plate (921). The blocking valve plate (921) is horizontally and slidably connected through the communication box body (814). A communication hole (922) is longitudinally opened through the blocking valve plate (921). After one side of the blocking valve plate (921) extends out of the communication box body (814), two guiding blocks (923) are symmetrically and fixedly connected. An inclined guiding groove (924) is opened through the guiding block (923). The upper part of the inner side wall of the fire extinguishing agent storage tank (815) is fixedly connected with a nitrogen storage tank (925). A sealing diaphragm (926) is fixedly connected to the opening at the top of the nitrogen storage tank (925) in a sealed manner. A cross column (927) corresponding to the inclined guiding groove (924) is fixedly connected to the rod wall of the puncture needle (914). One end of the cross column (927) extends into the corresponding inclined guiding groove (924).

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