An insulation self-starting fire extinguishing device for arc suppression coil and control method

Abstract

The application discloses an arc-extinguishing coil insulation self-starting fire extinguishing device and a control method, and belongs to the technical field of arc-extinguishing coil insulation self-starting fire extinguishing devices. The device comprises an arc-extinguishing coil body, a fixing frame and a fire extinguishing mechanism. The arc-extinguishing coil body is arranged on the fixing frame. The fire extinguishing mechanism is installed on the fixing frame. The fire extinguishing mechanism is sleeved on the surface of the arc-extinguishing coil body. The device is used for solving the technical problem that the artificial fire extinguishing mode is used for extinguishing fire, human beings need to know the fire phenomenon in time, and human beings need to arrive at the fire site in time to extinguish the fire, thereby causing low fire extinguishing efficiency and easily leading to property loss. The device can realize real-time sensing of the surface temperature change of the arc-extinguishing coil body through the fire extinguishing mechanism. When the surface temperature of the arc-extinguishing coil body reaches a preset value, the fire extinguishing mechanism is used for cooling the surface of the arc-extinguishing coil body, so that the formation of combustion conditions is effectively reduced. When the arc-extinguishing coil body catches fire, the fire extinguishing mechanism is used for extinguishing the fire at the fire site of the arc-extinguishing coil body, so that the harm caused by the flame can be reduced, and the effect of extinguishing the fire can be achieved.

Description

Technical Field

[0001] This invention relates to the field of arc suppression coil technology, and in particular to an insulating self-starting fire extinguishing device and control method for arc suppression coils. Background Technology

[0002] An arc suppression coil is an inductor with an iron core. It is connected between the neutral point of a transformer (or generator) and the ground, forming an arc suppression coil grounding system. Power transmission lines grounded via arc suppression coils are a type of low-current grounding system. Under normal operation, no current flows through the arc suppression coil. However, when the power grid is struck by lightning or a single-phase arcing ground fault occurs, the neutral point potential rises to the phase voltage. At this time, the inductive current flowing through the arc suppression coil cancels out the capacitive fault current of the single-phase ground fault, compensating for the fault current. The residual current after compensation becomes very small, insufficient to sustain the arc, thus extinguishing it. This allows the ground fault to be quickly eliminated without causing overvoltage. However, if the connection ends of the arc suppression coil are not tightly connected after maintenance or repair, they may become loose, potentially leading to high temperatures at the connection ends, which could easily generate open flames and cause a severe fire.

[0003] Therefore, existing technologies usually involve manual firefighting. However, this method requires people to be aware of the fire in a timely manner and to rush to the scene to extinguish it, resulting in low firefighting efficiency and easy property damage. Summary of the Invention

[0004] This invention provides an insulated self-starting fire extinguishing device and control method for arc suppression coils, which solves the technical problem that fire extinguishing by manual means requires timely detection of the fire and prompt arrival at the scene, resulting in low fire extinguishing efficiency and easy property damage.

[0005] The first aspect of the present invention provides an insulating self-starting fire extinguishing device for an arc suppression coil, the device comprising an arc suppression coil body, a fixing frame, and a fire extinguishing mechanism;

[0006] The arc-suppression coil body is mounted on the fixed frame;

[0007] The fire extinguishing mechanism is mounted on the fixed frame;

[0008] The fire extinguishing mechanism is fitted onto the surface of the arc suppression coil body.

[0009] Optionally, the fire extinguishing mechanism includes a fire-gathering component, a cooling component, and a fire-retarding component;

[0010] The fire-gathering component is installed on the top of the fixing frame, the cooling component is installed on one side of the fixing frame, and the flame-retardant component is installed in the middle of the fixing frame.

[0011] The fire-gathering component is connected to the fire-reducing component via a first connecting pipe;

[0012] The cooling component is connected to the cooling sleeve of the fire-reducing component via a one-way pipe;

[0013] The cooling sleeve of the flame-reducing component is fitted onto the surface of the arc-suppressing coil body.

[0014] Optionally, the fire-gathering assembly includes a mounting bracket and a lower conical ring cylinder;

[0015] The mounting bracket is provided on the top of the fixing frame;

[0016] The lower conical ring cylinder is mounted on the mounting frame;

[0017] The top of the lower conical annular cylinder is provided with an upper straight annular cylinder;

[0018] The lower conical annular cylinder has a conical hole inside, and the upper straight annular cylinder has a straight upper hole that communicates with the conical hole;

[0019] An opening is provided on the side wall of the upper straight ring cylinder, and the opening is connected to one end of the first connecting pipe;

[0020] The other end of the first connecting pipe is connected to the water storage tank of the fire-reducing component.

[0021] Optionally, the conical hole is provided with an inner annular cylinder;

[0022] Multiple guide plates are circumferentially arranged along the lower end of the inner annular cylinder;

[0023] The other end of the guide plate is connected to the inner wall of the conical hole;

[0024] Heat-absorbing tubes are provided at equal intervals along the upper end of the inner annular cylinder.

[0025] The heat-absorbing tube has an opening on its side wall, and the opening is connected to one end of the heat-absorbing rod.

[0026] The other end of the heat-absorbing rod passes through the conical hole and communicates with the interior of the lower conical annular cylinder.

[0027] Optionally, the cooling assembly includes a mounting base plate and a perfluorohexanone storage cylinder;

[0028] One side of the mounting base plate is connected to the bottom side of the fixing frame;

[0029] The perfluorohexanone storage cylinder is provided on the top of the mounting base plate;

[0030] The top of the perfluorohexanone storage cylinder is provided with an upper end head and a thermal expansion valve for controlling the opening or closing of the upper end head;

[0031] The thermal expansion valve is connected to one end of the capillary tube;

[0032] The other end of the capillary is connected to the temperature sensing bulb;

[0033] The temperature sensing bulb is installed on the surface of the arc suppression coil body.

[0034] Optionally, the cooling assembly further includes a second connecting pipe and the one-way pipe;

[0035] One end of the second connecting pipe extends through the top wall of the perfluorohexanone storage cylinder to the inner bottom wall of the perfluorohexanone storage cylinder;

[0036] The other end of the second connecting pipe is connected to one end of the one-way pipe;

[0037] The other end of the one-way tube is connected to the cooling sleeve of the flame-reducing component.

[0038] Optionally, the cooling assembly further includes a sealing ball and an elastic element;

[0039] The elastic element is provided on the inner wall of one end of the unidirectional tube;

[0040] The other end of the elastic element is connected to the sealing ball;

[0041] The surface of the sealing ball is in contact with the second connecting pipe.

[0042] Optionally, the fire-reducing component includes the cooling jacket and the water storage tank;

[0043] The inner top wall of the water storage tank is connected to a third connecting pipe;

[0044] The other end of the third connecting pipe extends into the interior of the cooling sleeve;

[0045] Multiple jet nozzles are respectively provided on both sides of the cooling jacket near the fire-gathering component.

[0046] Optionally, the flame-reducing assembly further includes an inner partition;

[0047] The inner bottom wall of the cooling sleeve is provided with the inner partition plate;

[0048] One side of the inner partition forms a reaction chamber, and the other side forms a gas chamber;

[0049] The ends of the reaction chamber, the cooling component, and the third connecting pipe are interconnected;

[0050] The gas chamber is connected to the jet head.

[0051] A second aspect of the present invention provides a control method for an insulated self-starting fire extinguishing device for an arc suppression coil as described in any of the preceding claims, comprising:

[0052] When the surface temperature of the arc suppression coil body reaches a preset value, a fire extinguishing mechanism is used to cool down the arc suppression coil body.

[0053] When the arc suppression coil body catches fire, the fire extinguishing mechanism is used to extinguish the fire at the point of origin of the arc suppression coil body.

[0054] As can be seen from the above technical solutions, the present invention has the following advantages:

[0055] This invention uses a fire extinguishing mechanism to sense the surface temperature changes of the arc-suppression coil body in real time. When the surface temperature of the arc-suppression coil body reaches a preset value, the fire extinguishing mechanism cools the surface of the arc-suppression coil body, effectively reducing the conditions for combustion. When the arc-suppression coil body catches fire, the fire extinguishing mechanism extinguishes the fire at the ignition point, reducing the damage caused by the flames and achieving the effect of extinguishing the fire. Attached Figure Description

[0056] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0057] Figure 1 This is a schematic diagram of the structure of an insulated self-starting fire extinguishing device for an arc suppression coil provided in Embodiment 1 of the present invention;

[0058] Figure 2 This is a schematic diagram of the structure of an insulated self-starting fire extinguishing device for an arc suppression coil provided in Embodiment 2 of the present invention;

[0059] Figure 3 This is a schematic diagram of the structure of the fire-gathering component, cooling component, and flame-retardant component provided in Embodiment 2 of the present invention;

[0060] Figure 4 This is a schematic diagram of the connection between the water storage tank and the first connecting pipe provided in Embodiment 3 of the present invention;

[0061] Figure 5 This is a partial cross-sectional view of the fire-gathering assembly provided in Embodiment 3 of the present invention;

[0062] Figure 6 This is a schematic diagram showing the connection between the mounting base plate and the perfluorohexanone storage cylinder provided in Embodiment 4 of the present invention;

[0063] Figure 7 This is a schematic diagram of the internal structure of the perfluorohexanone storage cylinder provided in Embodiment 4 of the present invention;

[0064] Figure 8 This is a schematic diagram of the internal structure of the unidirectional tube provided in Embodiment 4 of the present invention;

[0065] Figure 9 This is a partial structural schematic diagram of the flame-reducing component provided in Embodiment 5 of the present invention;

[0066] Figure 10 This is a flowchart illustrating the steps of a control method for an insulated self-starting fire extinguishing device for an arc suppression coil, as provided in Embodiment Six of the present invention.

[0067] The meanings of the reference numerals in the attached figures are as follows:

[0068] 1. Arc suppression coil body; 2. Fixing frame; 3. Fire extinguishing mechanism; 31. Fire gathering assembly; 311. Mounting frame; 312. Upper straight annular cylinder; 313. First connecting pipe; 314. Lower conical annular cylinder; 315. Inner annular cylinder; 316. Flow guide plate; 317. Heat absorption pipe; 318. Heat absorption rod; 319. Straight upper hole; 32. Cooling assembly; 321. Mounting base plate; 322. Perfluorohexanone storage. 323. Cylinder; 324. Upper end; 325. Thermal expansion valve; 326. Capillary tube; 327. Temperature sensing bulb; 328. Second connecting pipe; 329. One-way pipe; 320. Sealing ball; 320. Elastic component; 33. Flame-reducing assembly; 331. Cooling sleeve; 332. Water storage tank; 333. Third connecting pipe; 334. Jet nozzle; 335. Inner partition; 336. Reaction chamber; 337. Gas chamber. Detailed Implementation

[0069] This invention provides an insulated self-starting fire extinguishing device and control method for arc suppression coils, which solves the technical problem that fire extinguishing by manual means requires timely detection of the fire and prompt arrival at the scene, resulting in low fire extinguishing efficiency and potential property damage.

[0070] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0071] Please see Figure 1 , Figure 1This is a schematic diagram of the structure of an insulated self-starting fire extinguishing device for an arc suppression coil provided in Embodiment 1 of the present invention.

[0072] The present invention provides an insulated self-starting fire extinguishing device for an arc suppression coil. The device includes an arc suppression coil body 1, a fixing frame 2, and a fire extinguishing mechanism 3. The arc suppression coil body 1 is mounted on the fixing frame 2. The fire extinguishing mechanism 3 is installed on the fixing frame 2. The fire extinguishing mechanism 3 is sleeved on the surface of the arc suppression coil body 1.

[0073] It should be noted that, for reference Figure 1 The fixing frame 2 is a rectangular frame, and the arc suppression coil body 1 is mounted in the middle of the fixing frame 2. The fire extinguishing mechanism 3 is installed on the fixing frame 2 and is sleeved on the surface of the arc suppression coil body 1. It senses the temperature of the arc suppression coil body 1 in real time. When the temperature of the arc suppression coil body 1 reaches a certain value, the fire extinguishing mechanism 3 cools the arc suppression coil body 1 in time. When the arc suppression coil body 1 catches fire, the fire extinguishing mechanism 3 introduces the fire into the fire extinguishing mechanism 3 and sprays perfluorohexanone liquid to extinguish the fire, thus achieving the effect of extinguishing open flames.

[0074] This invention uses a fire extinguishing mechanism 3 to sense the surface temperature change of the arc-suppression coil body 1 in real time. When the surface temperature of the arc-suppression coil body 1 reaches a preset value, the fire extinguishing mechanism 3 cools the surface of the arc-suppression coil body 1, effectively reducing the conditions for combustion. When the arc-suppression coil body 1 catches fire, the fire extinguishing mechanism 3 extinguishes the fire at the ignition point, reducing the damage caused by the flames and achieving the effect of extinguishing the fire.

[0075] Please see Figure 2-3 , Figure 2 This is a schematic diagram of the structure of an insulated self-starting fire extinguishing device for an arc suppression coil provided in Embodiment 2 of the present invention.

[0076] The present invention provides an insulating self-starting fire extinguishing device for an arc suppression coil. The fire extinguishing mechanism 3 includes a fire-gathering component 31, a cooling component 32, and a flame-retarding component 33. The fire-gathering component 31 is installed on the top of the fixing frame 2, the cooling component 32 is installed on one side of the fixing frame 2, and the flame-retarding component 33 is installed in the middle of the fixing frame 2. The fire-gathering component 31 is connected to the flame-retarding component 33 through a first connecting pipe 313. The cooling component 32 is connected to the cooling sleeve 331 of the flame-retarding component 33 through a one-way pipe 328. The cooling sleeve 331 of the flame-retarding component 33 is fitted onto the surface of the arc suppression coil body 1.

[0077] It should be noted that, since a large amount of heat is generated at the connection points of the arc suppression coil body 1 during a fire, and fires are prone to occur at the connection points of the arc suppression coil body 1, this device performs initial auxiliary fire extinguishing operations based on this situation.

[0078] It should be noted that, for reference Figure 2 and Figure 3 The fire extinguishing mechanism 3 includes a fire-gathering component 31 installed on the top of the fixed frame 2, a cooling component 32 installed on one side of the fixed frame 2, and a flame-retarding component 33 installed in the middle of the fixed frame 2. The fire-gathering component 31 is used to concentrate the open flame of the arc-extinguishing coil body 1, isolate the open flame from contact with other combustibles, and introduce water from the water tank 332 of the flame-retarding component 33 through the first connecting pipe 313 of the fire-gathering component 31, using it in conjunction with vaporized perfluorohexanone obtained from perfluorohexanone for fire extinguishing. The flame-retarding component 33 is used to reduce the combustion conditions on the surface of the arc-extinguishing coil body 1; that is, when an open flame appears on the surface of the arc-extinguishing coil body 1, the open flame is introduced into the flame-retarding component 33 to prevent contact with other combustibles and to extinguish the introduced open flame. The cooling component 32 is used in conjunction with the flame suppression component 33 to ensure the fire extinguishing effect. The cooling component 32 is connected to the cooling sleeve 331 of the flame suppression component 33 through a one-way tube 328. The cooling sleeve 331 of the flame suppression component 33 is fitted on the surface of the arc suppression coil body 1 and can cool the arc suppression coil body 1 in real time.

[0079] This invention uses a fire extinguishing mechanism 3 to sense the surface temperature change of the arc-suppression coil body 1 in real time. When the surface temperature of the arc-suppression coil body 1 reaches a preset value, the fire extinguishing mechanism 3 is used to cool the surface of the arc-suppression coil body 1, effectively reducing the conditions for combustion. When the arc-suppression coil body 1 catches fire, the fire extinguishing mechanism 3 is used to extinguish the fire at the ignition point of the arc-suppression coil body 1, which can reduce the harm caused by the flame and achieve the effect of extinguishing the fire.

[0080] Please see Figure 4-5 , Figure 4 This is a schematic diagram of the connection between a water storage tank and a first connecting pipe provided in Embodiment 3 of the present invention.

[0081] The present invention provides an insulated self-starting fire extinguishing device for arc suppression coils. The fire-gathering component 31 includes a mounting frame 311 and a lower conical ring cylinder 314. The mounting frame 311 is provided on the top of the fixing frame 2. The lower conical ring cylinder 314 is installed on the mounting frame 311. An upper straight ring cylinder 312 is provided on the top of the lower conical ring cylinder 314. A conical hole is opened inside the lower conical ring cylinder 314. A straight upper hole 319 communicating with the conical hole is opened in the upper straight ring cylinder 312. An opening is opened on the side wall of the upper straight ring cylinder 312, and the opening is connected to one end of a first connecting pipe 313. The other end of the first connecting pipe 313 is connected to the water storage tank 332 of the fire suppression component 33. An inner annular cylinder 315 is provided inside the conical hole; multiple guide plates 316 are arranged circumferentially along the lower end of the inner annular cylinder 315; the other end of the guide plates 316 is connected to the inner wall of the conical hole; heat absorption tubes 317 are arranged at equal intervals circumferentially along the upper end of the inner annular cylinder 315; the side wall of the heat absorption tube 317 is provided with a tube opening, and the tube opening is connected to one end of the heat absorption rod 318; the other end of the heat absorption rod 318 passes through the conical hole and communicates with the interior of the lower conical annular cylinder 314.

[0082] It should be noted that the fire-collecting assembly 31 includes a mounting bracket 311 mounted on the top of the fixed frame 2 and a lower conical annular cylinder 314 mounted on the mounting bracket 311. The top of the lower conical annular cylinder 314 is provided with an upper straight annular cylinder 312 adapted to the lower conical annular cylinder 314. A conical hole is opened inside the lower conical annular cylinder 314, and a straight upper hole 319 is opened inside the upper straight annular cylinder 312. The conical hole and the straight upper hole 319 are aligned and interconnected. An opening is opened on the side wall of the upper straight annular cylinder 312, communicating with one end of a first connecting pipe 313. The other end of the first connecting pipe 313 is connected to the water storage tank 332 of the fire-reducing assembly 33.

[0083] When the arc suppression coil body 1 ignites, the flame is generally generated through the connection points on the surface of the arc suppression coil body 1. Therefore, multiple flame-gathering components 31 can be installed and distributed above areas where flames are likely to occur. When the flame is rising, it will pass through the conical hole and the straight upper hole 319 and move upwards. The lower conical ring cylinder 314 and the upper straight ring cylinder 312 can both contain liquid. This liquid can be pure water or a liquid that easily evaporates when heated, serving to assist in absorbing heat and evaporating to generate gas. The conical hole, together with the straight upper hole 319, will form a chimney-like channel, guiding the flame generated below upwards and reducing the spread of the flame.

[0084] It should be noted that an inner annular cylinder 315 is provided inside the conical orifice, and multiple guide plates 316 are arranged circumferentially along the lower end of the inner annular cylinder 315. The other end of the guide plates 316 is connected to the inner wall of the conical orifice. (See reference...) Figure 5 The guide plate 316 gradually tilts upwards in a circumferential direction, guiding the open flame upwards. In conjunction with the inner annular cylinder 315, the flame entering the channel moves in a spiral motion along the tilt of the guide plate 316, increasing the flame's flow path within the channel. The flame's heat is absorbed through the inner walls of the upper straight annular cylinder 312 and the lower conical annular cylinder 314. In other words, when the flame enters the guide plate 316, the guide plate causes the flame to spiral, thus extending the path the flame travels and allowing the heat-absorbing rod 318 to further absorb heat.

[0085] It should be noted that heat-absorbing tubes 317 are provided at equal intervals along the upper end of the inner annular cylinder 315; the side wall of the heat-absorbing tube 317 is provided with a pipe opening that connects to one end of the heat-absorbing rod 318; the other end of the heat-absorbing rod 318 passes through a conical hole and communicates with the interior of the lower conical annular cylinder 314.

[0086] As the flame extends its flow path through the guide plate 316, the contact area between the multiple heat-absorbing rods 318 and the flame increases. The heat-absorbing rods 318 absorb heat from the flame, and when they exchange heat with the liquid inside the lower conical annular cylinder 314, the heat absorption effect is increased, reducing the harm caused by the flame. Specifically, when the flame flows inside the channel, it will come into contact with the surfaces of the heat-absorbing pipes 317 and the heat-absorbing rods 318. At this time, the heat-absorbing pipes 317 and the heat-absorbing rods 318 will increase the absorption of heat from the flame. The heat-absorbing pipes 317 and the heat-absorbing rods 318 exchange the heat from the flame with the liquid inside the upper straight annular cylinder 312 and the lower conical annular cylinder 314, reducing the conditions for the flame to generate temperature. At the same time, the liquid absorbs the flame temperature and uses the absorbed temperature to boil the internal liquid, causing the liquid to expand. The compressed gas enters the interior of the water storage tank 332 through the first connecting pipe 313, driving the fire suppression component 33 to perform auxiliary fire extinguishing work.

[0087] Specifically, the heat absorption tube 317 and the heat absorption rod 318 can be made of quartz material, and the specific material can be adjusted appropriately according to the usage environment.

[0088] Please see Figure 6-8 , Figure 6 This is a schematic diagram of the connection between a mounting base plate and a perfluorohexanone storage cylinder provided in Embodiment 4 of the present invention.

[0089] The present invention provides an insulating self-starting fire extinguishing device for an arc suppression coil. The cooling component 32 includes a mounting base plate 321 and a perfluorohexanone storage cylinder 322. One side of the mounting base plate 321 is connected to the bottom side of the fixing frame 2. The perfluorohexanone storage cylinder 322 is provided on the top of the mounting base plate 321. The top of the perfluorohexanone storage cylinder 322 is provided with an upper end head 323 and a thermal expansion valve 324 for controlling the opening or closing of the upper end head 323. The thermal expansion valve 324 is connected to one end of a capillary tube 325. The other end of the capillary tube 325 is connected to a temperature sensing bulb 326. The temperature sensing bulb 326 is installed on the surface of the arc suppression coil body 1. The cooling assembly 32 also includes a second connecting pipe 327 and a one-way pipe 328; one end of the second connecting pipe 327 extends through the top wall of the perfluorohexanone storage cylinder 322 to the inner bottom wall of the perfluorohexanone storage cylinder 322; the other end of the second connecting pipe 327 is connected to one end of the one-way pipe 328; the other end of the one-way pipe 328 is connected to the cooling sleeve 331 of the flame-retardant assembly 33. The cooling assembly 32 also includes a sealing ball 329 and an elastic element 320; an elastic element 320 is provided on the inner wall of one end of the one-way pipe 328; the other end of the elastic element 320 is connected to the sealing ball 329; the surface of the sealing ball 329 is in contact with the second connecting pipe 327.

[0090] It should be noted that the cooling component 32 includes a mounting base plate 321 installed on one side of the fixed frame 2 and a perfluorohexanone storage cylinder 322 disposed on the mounting base plate 321. The top of the perfluorohexanone storage cylinder 322 is connected to an upper end head 323 and a thermal expansion valve 324 that controls the opening or closing of the upper end head 323. The thermal expansion valve 324 relies on the capillary tube 325 to transmit the temperature sensing bulb 326 to sense the surface temperature of the arc suppression coil body 1, thereby controlling the upper end head 323 to be in an open or closed state. One end of the second connecting pipe 327 extends to the inner bottom wall of the perfluorohexanone storage cylinder 322, while the other end is connected to one end of the one-way pipe 328. The other end of the one-way pipe 328 is connected to the cooling sleeve 331 of the flame-retardant component 33. One end of the elastic element 320 is fixedly connected to the inner wall of one end of the one-way pipe 328. The other end of the elastic element 320 extends to the other end of the one-way pipe 328, and the other end of the elastic element 320 is connected to the sealing ball 329. The surface of the blocking ball 329 abuts against the second connecting pipe 327.

[0091] In practical implementation, the heat of the arc-suppression coil body 1 is sensed by a temperature sensing bulb 326 installed on the surface of the arc-suppression coil body 1. Specifically, the temperature sensing bulb 326 can be installed at multiple connection points on the arc-suppression coil body 1 that are prone to generating heat, or the heat can be transferred to the temperature sensing bulb 326 through a heat-conducting plate. The heat-conducting plate only needs to be installed at the easily heated points, and connected to the temperature sensing bulb 326. This allows the surface temperature of the arc-suppression coil body 1 sensed by the heat-conducting plate to be promptly transmitted to the temperature sensing bulb 326, enabling the temperature sensing bulb 326 to reach its working state and receive heat information. The use of the temperature sensing bulb 326 is prioritized based on the on-site operating environment to ensure its effectiveness. When the temperature sensing bulb 326 senses that the surface temperature of the arc-suppression coil body 1 reaches a certain value, it will be transmitted to the thermal expansion valve 324 through the capillary tube 325, causing the thermal expansion valve 324 to close.

[0092] Specifically, since the perfluorohexanone storage cylinder 322 is filled with perfluorohexanone, and perfluorohexanone is in a volatile state, the thermal expansion valve 324 is normally open. Therefore, when the surface temperature of the arc suppression coil body 1 reaches a certain value, the thermal expansion valve 324 will close, and the perfluorohexanone storage cylinder 322 will be in a closed state. However, the perfluorohexanone inside the perfluorohexanone storage cylinder 322 continues to volatilize, which will increase the internal pressure of the perfluorohexanone storage cylinder 322. This causes the perfluorohexanone inside the perfluorohexanone storage cylinder 322 to be discharged to the outside of the perfluorohexanone storage cylinder 322 through the lower end of the second connecting pipe 327. This allows the perfluorohexanone to push open the sealing ball 329 in the one-way pipe 328 through the second connecting pipe 327 and enter the cooling sleeve 331 of the flame-retardant component 33 along the one-way pipe 328, thereby reducing the surrounding temperature of the arc suppression coil body 1. Reducing the high temperature can suppress the generation of open flames and play a role in preventing fire sources.

[0093] Specifically, the thermostatic expansion valve 324 senses changes in the superheat at the evaporator outlet via the temperature sensing bulb 326, causing a pressure change in the charge within the temperature sensing system. This pressure change acts on the transmission diaphragm, causing it to move up and down. This force is then transmitted to the transmission rod via the transmission plate, pushing the valve needle to move up and down, thus closing or opening the valve. This achieves pressure reduction and throttling, automatically regulating the refrigerant supply to the evaporator and maintaining a certain superheat at the evaporator outlet. This ensures full utilization of the evaporator's heat transfer area and reduces the occurrence of liquid slugging. The temperature sensing system is a closed system composed of interconnected components including the temperature sensing bulb 326, capillary tube 325, transmission diaphragm, and transmission bellows.

[0094] Please see Figure 1 and Figure 9 , Figure 9 This is a partial structural schematic diagram of the flame-reducing component provided in Embodiment 5 of the present invention.

[0095] This invention provides an insulated self-starting fire extinguishing device for arc suppression coils. The fire suppression component 33 includes a cooling sleeve 331 and a water storage tank 332. A third connecting pipe 333 is connected to the inner top wall of the water storage tank 332. The other end of the third connecting pipe 333 extends into the interior of the cooling sleeve 331. Multiple jet nozzles 334 are respectively arranged on both sides of the cooling sleeve 331 near the fire suppression component 31. The fire suppression component 33 also includes an inner partition 335. An inner partition 335 is arranged on the inner bottom wall of the cooling sleeve 331. One side of the inner partition 335 forms a reaction chamber 336, and the other side forms a gas chamber 337. The ends of the reaction chamber 336, the cooling component 32, and the third connecting pipe 333 are interconnected. The gas chamber 337 is connected to the jet nozzles 334.

[0096] It should be noted that the flame-retardant assembly 33 includes a cooling sleeve 331 fitted onto the surface of the arc-suppression coil body 1 and a water storage tank 332 mounted on the mounting base plate 321. One end of the third connecting pipe 333 is connected to the water storage tank 332, and the other end extends into the cooling sleeve 331. (See reference...) Figure 9 The cooling sleeve 331 has a U-shaped structure, which surrounds the arc-suppressing coil body 1. Multiple jet nozzles 334 are respectively arranged on both sides of the cooling sleeve 331 near the fire-gathering component 31. An inner partition 335 is provided inside the cooling sleeve 331. One side of the inner partition 335 forms a reaction chamber 336, and the other side forms a gas chamber 337. The ends of the reaction chamber 336, the cooling component 32, and the third connecting pipe 333 are interconnected. The gas chamber 337 is connected to the jet nozzles 334. Since the inner partition 335 does not reach the inner top wall of the cooling sleeve 331, the upper parts of the reaction chamber 336 and the gas chamber 337 are interconnected.

[0097] In practical implementation, when the interior of the cooling jacket 331 forms a reaction chamber 336 and a gas chamber 337 through the inner partition 335, perfluorohexanone will enter the interior of the reaction chamber 336 from the gas chamber 337, and then the surface of the arc suppression coil body 1 will be cooled by the cooling component 32. When an open flame appears on the arc suppression coil body 1, the gas inside the flame gathering component 31 will be injected into the interior of the water storage tank 332. At this time, since the upper part of the interior of the water storage tank 332 is high-pressure gas, the liquid at the lower part of the interior of the water storage tank 332 will be injected into the third connecting pipe 333. The liquid inside the water storage tank 332 is introduced into the reaction chamber 336 through the third connecting pipe 333. As perfluorohexanone comes into contact with the liquid, it will volatilize and form gaseous perfluorohexanone. This gaseous perfluorohexanone enters the gas chamber 337 through the opening at the upper end of the inner partition 335. Since the jet nozzle 334 is connected to the gas chamber 337, the gaseous perfluorohexanone will be discharged through the jet nozzle 334. In conjunction with the flame-gathering component 31, which gathers the flame upwards, the gaseous perfluorohexanone sprayed from the jet nozzle 334 will flow with the airflow caused by the flame-gathering component 31, so that the perfluorohexanone envelops the flame, reducing the continued generation of open flame. At the same time, the jet nozzle 334 covers the area around the open flame with perfluorohexanone, isolating oxygen and reducing the damage caused by the flame, thus achieving the effect of extinguishing the fire.

[0098] Please see Figure 10 , Figure 10 This is a flowchart illustrating the steps of a control method for an insulated self-starting fire extinguishing device for an arc suppression coil, applicable to any of the above embodiments, as provided in Embodiment Six of the present invention.

[0099] The present invention provides a control method for an insulated self-starting fire extinguishing device for arc suppression coils applied in any of the above embodiments, comprising the following steps:

[0100] Step 101: When the surface temperature of the arc suppression coil body 1 reaches the preset value, the fire extinguishing mechanism 3 is used to cool down the arc suppression coil body 1.

[0101] Step 102: When the arc suppression coil body 1 catches fire, the fire extinguishing mechanism 3 is used to extinguish the fire at the point of origin of the arc suppression coil body 1.

[0102] It should be noted that the preset values ​​are set according to the actual situation and are not limited here.

[0103] In practical implementation, when the surface of the arc-suppression coil body 1 generates high temperature during use, the temperature sensing bulb 326 of the fire extinguishing mechanism 3 senses the surface temperature of the arc-suppression coil body 1. When the surface temperature reaches a certain value, it is transmitted to the thermal expansion valve 324 through the capillary tube 325 of the fire extinguishing mechanism 3, thereby controlling the thermal expansion valve 324 to close. This causes the internal pressure of the perfluorohexanone storage cylinder 322 to increase. The perfluorohexanone inside the perfluorohexanone storage cylinder 322 is discharged to the outside of the perfluorohexanone storage cylinder 322 through the lower end of the second connecting pipe 327. When the perfluorohexanone flows through the second connecting pipe 327, it pushes open the sealing ball 329 of the one-way pipe 328 and enters the cooling sleeve 331, causing the cooling sleeve 331 to reduce the surface temperature of the arc-suppression coil body 1, thereby reducing the formation of combustion conditions.

[0104] When the arc suppression coil body 1 ignites, the flame rises, passes through the conical hole and the straight upper hole 319, and moves upward, guiding the flame generated below upward. Simultaneously, with the cooperation of the guide plate 316 and the inner annular cylinder 315, the flame spirals along the inclined state of the guide plate 316, increasing the flow path of the flame within the channel. Heat is absorbed through the heat-absorbing pipe 317 and the heat-absorbing rod 318, and the absorbed heat is exchanged with the internal liquid of the upper straight annular cylinder 312 and the lower conical annular cylinder 314, effectively reducing the conditions for flame temperature generation. Furthermore, the boiling of the internal liquid causes gas to enter the interior of the water storage tank 332 through the first connecting pipe 313. At this time, because the interior of the water storage tank 332 is under high pressure, the gas inside the water storage tank 332... The liquid below is introduced into the interior of the reaction chamber 336 through the third connecting pipe 333. When the perfluorohexanone in the reaction chamber 336 comes into contact with the liquid, the perfluorohexanone vaporizes and forms gaseous perfluorohexanone. This gaseous perfluorohexanone enters the interior of the gas chamber 337 through the opening at the upper end of the inner partition 335. The perfluorohexanone is discharged by the jet nozzle 334 connected to the gas chamber 337. With the effect of the flame-gathering component 31 focusing the flame upward, the perfluorohexanone sprayed by the jet nozzle 334 follows the airflow caused by the flame-gathering component 31, so that the perfluorohexanone envelops the flame, reducing the continued generation of open flame. At the same time, the jet nozzle 334 covers the area around the open flame with perfluorohexanone, isolating oxygen and reducing the damage caused by the flame, thus achieving the effect of extinguishing the fire.

[0105] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0106] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An insulation self-starting fire extinguishing device for arc suppression coils, characterized in that, The device comprises an arc-extinguishing coil body, a fixing frame and a fire extinguishing mechanism; The arc-extinguishing coil body is arranged on the fixing frame; The fire extinguishing mechanism is installed on the fixing frame; The fire extinguishing mechanism is sleeved on the surface of the arc-extinguishing coil body; The fire extinguishing mechanism comprises a fire gathering assembly, a temperature reducing assembly and a combustion reducing assembly; The top of the fixing frame is provided with the fire gathering assembly, one side of the fixing frame is provided with the temperature reducing assembly, and the middle of the fixing frame is provided with the combustion reducing assembly; The fire gathering assembly is connected with the combustion reducing assembly through a first communication pipe; The temperature reducing assembly is connected with the temperature reducing sleeve of the combustion reducing assembly through a one-way pipe; The temperature reducing sleeve of the combustion reducing assembly is sleeved on the surface of the arc-extinguishing coil body; The fire gathering assembly comprises a mounting frame and a lower conical ring cylinder; The top of the fixing frame is provided with the mounting frame; The mounting frame is provided with the lower conical ring cylinder; The top of the lower conical ring cylinder is provided with an upper straight ring cylinder; The inside of the lower conical ring cylinder is provided with a conical hole, and the upper straight ring cylinder is provided with a straight upper hole in communication with the conical hole; An opening is formed in the side wall of the upper straight ring cylinder, and the opening is in communication with one end of the first communication pipe; The other end of the first communication pipe is in communication with a water storage tank of the combustion reducing assembly.

2. The self-actuated arc suppression coil insulation fire extinguishing device of claim 1, wherein, An inner ring cylinder is arranged in the conical hole; A plurality of flow guide inclined plates are circumferentially arranged along the lower end of the inner ring cylinder; The other end of the flow guide inclined plate is connected with the inner wall of the conical hole; Heat absorbing pipes are equidistantly arranged along the upper end of the inner ring cylinder; A pipe opening is formed in the side wall of the heat absorbing pipe, and the pipe opening is connected with one end of a heat absorbing rod; The other end of the heat absorbing rod penetrates through the conical hole and is in communication with the inside of the lower conical ring cylinder.

3. The insulation self-starting arc extinguishing device for an arc suppression coil according to claim 1, characterized by The temperature reducing assembly comprises a mounting bottom plate and a perfluorohexone storage cylinder; One side end of the mounting bottom plate is connected with the bottom side end of the fixing frame; The top of the mounting bottom plate is provided with the perfluorohexone storage cylinder; The top of the perfluorohexone storage cylinder is provided with an upper end head and a thermal expansion valve for controlling the opening and closing of the upper end head; The thermal expansion valve is connected with one end of a capillary tube; The other end of the capillary tube is connected with a temperature sensing bag; The temperature sensing bag is installed on the surface of the arc-extinguishing coil body.

4. The insulation self-starting arc extinguishing device for an arc suppression coil according to claim 3, characterized by The temperature reducing assembly further comprises a second communication pipe and the one-way pipe; One end of the second communication pipe extends through the top wall of the perfluorohexone storage cylinder to the inner bottom wall of the perfluorohexone storage cylinder; The other end of the second communication pipe is connected with one end of the one-way pipe; The other end of the one-way pipe is connected with the temperature reducing sleeve of the combustion reducing assembly.

5. The self-actuated arc suppression coil insulation fire extinguishing device of claim 4, wherein, The temperature reducing assembly further comprises a sealing ball and an elastic member; The inner wall of one end of the one-way pipe is provided with the elastic member; The other end of the elastic member is connected with the sealing ball; The surface of the sealing ball is in contact with the second communication pipe.

6. The insulated self-starting arc extinction device for an arc suppression coil according to claim 1, characterized by, The combustion reducing assembly comprises the temperature reducing sleeve and the water storage tank; A third communication pipe is in communication with the inner top wall of the water storage tank; The other end of the third communication pipe extends into the inside of the temperature reducing sleeve; The temperature reducing sleeve is provided with a plurality of air injection heads near the two sides of the fire gathering assembly.

7. The insulated self-starting arc extinction device for an arc suppression coil according to claim 6, characterized by The combustion reducing assembly further comprises an inner partition plate; The inner bottom wall of the temperature reducing sleeve is provided with the inner partition plate; One side of the inner partition plate forms a reaction bin, and the other side forms a gas bin; The reaction bin, the cooling assembly, and the end of the third communication pipe are in communication with each other; The gas bin is in communication with the gas jet head.

8. A control method for the self-starting extinguishing device for arc suppression coils according to any one of claims 1 to 7, characterized in that, Comprise: When the outer surface temperature of the arc-extinguishing coil body reaches a preset value, the fire extinguishing mechanism is used to cool the arc-extinguishing coil body; When the arc-extinguishing coil body catches fire, the fire extinguishing mechanism is used to extinguish the fire at the fire site of the arc-extinguishing coil body.

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