A fire extinguishing alarm device for high voltage switch cabinet

Abstract

The present invention discloses a fire extinguishing alarm device for a high-voltage switch cabinet, which relates to the field of electrical safety technology. To solve the technical problem that it is difficult for existing detection devices to detect a fire in the first time. A fire extinguishing alarm device for a high-voltage switch cabinet, comprising a mounting plate, the mounting plate is fixedly connected with an electric slide rail, the electric slide rail is slidably connected with a mounting block through a slider, a battery, a control terminal and a buzzer are installed in the mounting block, the control terminal in the mounting block is connected to a remote control terminal through the Internet of Things, and the battery is electrically connected to the switch cabinet and the control terminal, and a flame sensor and a smoke sensor are installed in the mounting block. The present invention drives the flame sensor and the smoke sensor to detect the temperature and smoke in the switch cabinet through the slider of the electric slide rail, so as to avoid the flame sensor and the smoke sensor staying in a corner of the switch cabinet, which makes it difficult to detect the temperature of the switch cabinet and the location of the fire in the first time.

Description

Technical Field

[0001] The invention relates to the technical field of electrical safety, and in particular to a fire extinguishing alarm device for a high-voltage switch cabinet. Background Art

[0002] High-voltage switchgear is a device used to control the on-off of circuits in power systems. The on-off of circuits is mainly controlled by isolating switches. In the daily operation of high-voltage switchgear, the current flowing through it is too large, resulting in a large amount of heat generation, which can easily cause fires in electrical components in the high-voltage switchgear. At the same time, if the protective measures in the machine room are not in place, small animals or insects may come into contact with live lines, which will also cause short circuits. After the short circuit, the short-circuit position will emit a large amount of heat and burn in a short period of time, causing the high-voltage switchgear to catch fire. If the fire is not controlled in time, it will spread to other switchgears in the machine room, causing damage to the high-voltage switchgear in the entire machine room. , affecting the normal power supply and causing huge economic losses. Most of the existing devices for detecting fire in high-voltage switch cabinets are fixedly installed in the switch cabinets. Since the high-voltage switch cabinets are placed indoors and usually consist of multiple groups of switch cabinets placed side by side and the switch cabinets are arranged closely, the air mobility inside the switch cabinets is small, and the temperature and smoke in the switch cabinets cannot be transmitted to the detection device in the first time, so that the detection device will not detect the changes in smoke and temperature in the first time of the fire. Workers cannot know the fire situation in the first time, and then the workers cannot extinguish the fire in the first time, resulting in the spread of the fire, and then causing multiple groups of switch cabinets to catch fire at the same time. Summary of the invention

[0003] The present invention provides a fire extinguishing alarm device for a high-voltage switch cabinet, in order to overcome the shortcoming that the existing detection device is difficult to detect the fire in the first time.

[0004] Technical solution: A fire extinguishing alarm device for a high-voltage switch cabinet, comprising a mounting plate, the mounting plate is fixedly connected with an electric slide rail, the electric slide rail is slidably connected with a mounting block through a slider, a battery, a control terminal and a buzzer are installed in the mounting block, the control terminal in the mounting block is connected with a remote control terminal through the Internet of Things, and the battery is electrically connected to the switch cabinet and the control terminal, a flame sensor and a smoke sensor are installed in the mounting block, the electric slide rail, the buzzer in the mounting block, the flame sensor and the smoke sensor are all electrically connected to the control terminal in the mounting block, the mounting plate is fixedly connected with a detection shell, the detection shell is sealingly and slidably connected with a mirror-distributed heat transfer plate, the side of the heat transfer plate close to the mounting plate is fixedly connected with an air bag located in the detection shell, the mirror-distributed heat transfer plates are all matched with the detection shell to form a mirror-distributed force storage chamber, the mounting plate is provided with a control component for controlling the gas flow in the force storage chamber, and the mounting plate is provided with an alarm component.

[0005] Preferably, the control component includes a trigger shell, the trigger shell is fixedly connected to the mounting plate, the trigger shell is provided with through holes distributed in mirror image, the mirror image distribution of the force storage chamber is communicated with the through hole of the trigger shell on the side close to the detection shell through a conduit, the trigger shell is sealingly and slidably connected with a heat transfer piston, an extrusion piston and a trigger member, the heat transfer piston, the extrusion piston and the trigger shell cooperate to form a trigger chamber, the side of the extrusion piston away from the heat transfer piston is fixedly connected to the trigger member, a spring is fixedly connected between the trigger member and the trigger shell, the trigger member cooperates with the through hole of the trigger shell, and the detection shell is provided with an energy storage component for storing force in the force storage chamber.

[0006] Preferably, the alarm assembly includes an alarm tube, which is fixed to the mounting plate, and the alarm tube is fixed to the trigger shell, and the through hole of the trigger shell on the side away from the detection shell is connected to the alarm tube, and a sliding piston is sealingly and slidingly connected inside the alarm tube, and a sliding rod is fixed to the side of the sliding piston away from the trigger shell, and the sliding rod is fixed with equidistantly distributed knocking balls through a spring, and the knocking balls cooperate with the alarm tube, and a knocking basin that cooperates with the knocking balls is fixed to the side of the alarm tube away from the trigger shell.

[0007] Preferably, the energy storage assembly includes an extrusion wedge block, which is fixed to a side of the mounting block close to the detection shell, and the detection shell is sealingly and slidingly connected with equidistantly distributed extrusion parts, a spring is fixed between the extrusion parts and the detection shell, the equidistantly distributed extrusion parts all cooperate with the extrusion wedge block, and the equidistantly distributed extrusion parts all cooperate with the detection shell to form equidistantly distributed extrusion chambers, the detection shell is provided with equidistantly distributed air inlet holes connected with adjacent extrusion chambers, the detection shell is provided with mirror-distributed ventilation holes, the ventilation holes of the detection shell are used to connect adjacent extrusion chambers with adjacent energy storage chambers, and a one-way valve is provided at the ventilation holes of the detection shell.

[0008] Preferably, it also includes a trigger mechanism arranged on the side of the mounting block away from the detection shell, the trigger mechanism is used to let workers know the location of the fire point in the switch cabinet, the trigger mechanism includes a first motor, the first motor is fixedly connected to the side of the mounting block away from the detection shell, the first motor is electrically connected to the control terminal in the mounting block, the output shaft of the first motor is fixedly connected to a winding wheel, the mounting block is fixedly connected to a fixing part, the fixing part is slidably connected to an electromagnet electrically connected to the control terminal in the mounting block, and a spring is fixedly connected between the electromagnet and the fixing part, a pull rope is fixedly connected between the winding wheel and the electromagnet, and the electromagnet is provided with a display component for facilitating workers to observe the fire location.

[0009] Preferably, the display component includes equidistantly distributed positioning shells, which are arranged on the side of the back plate of the switch cabinet away from the mounting block, the positioning shells are rotatably connected to a cover plate and a blocking plate, the positioning shells are fixed with an observation window, the positioning shells are slidably connected to a limiting member on the side close to the electromagnet, a spring is fixed between the limiting member and the adjacent positioning shell, the limiting member cooperates with the electromagnet, and the limiting member cooperates with the adjacent blocking plate.

[0010] Preferably, the sum of the magnetic attraction force of the electromagnet on the limiter and the gravity of the limiter is greater than the elastic force of a spring adjacent to the limiter, and the gravity of the limiter is less than the elastic force of the spring adjacent to the limiter.

[0011] Preferably, it also includes a spraying mechanism arranged on the side of the mounting block away from the detection shell, the spraying mechanism is used for fire extinguishing, the spraying mechanism includes a second motor, the second motor is rotatably connected to the mounting block, the second motor is electrically connected to the control terminal in the mounting block, the second motor and the output shaft of the first motor are transmitted through a gear set, the output shaft of the second motor is fixedly connected to a lower nozzle, the mounting plate is fixedly connected to a gas tank, the gas tank is provided with a solenoid valve electrically connected to the control terminal in the mounting block, and the gas tank is connected to the lower nozzle through a conduit.

[0012] Preferably, the second motor is fixedly connected to a connecting frame, the connecting frame is rotatably connected to an upper nozzle communicated with the gas storage tank, and the upper nozzle and the lower nozzle are driven by a gear set.

[0013] Preferably, it also includes a cleaning mechanism arranged on the side of the mounting block away from the positioning shell, the cleaning mechanism is used to clean dust in the switch cabinet, the cleaning mechanism includes a cleaning bracket, the cleaning bracket is fixed to the mounting block, the cleaning bracket is fixed with an electric push rod electrically connected to the control terminal in the mounting block, the telescopic end of the electric push rod is fixed with a sliding frame slidably connected to the cleaning bracket, the sliding frame is fixed with an arc slide rail electrically connected to the control terminal in the mounting block, the arc slide rail is slidably connected to a third motor electrically connected to the control terminal in the mounting block through a slider, and the output shaft of the third motor is fixed with a fan blade.

[0014] Compared with the prior art, the present invention has the following advantages: the present invention drives the flame sensor and the smoke sensor to detect the temperature and smoke in the switch cabinet by the slider of the electric slide rail, so as to avoid the flame sensor and the smoke sensor staying in a corner of the switch cabinet, which makes it difficult to detect the temperature and the position of the fire in the switch cabinet at the first time, and facilitates the workers to extinguish the fire in the switch cabinet at the first time, and avoids the fire spreading and causing damage to the remaining switch cabinets; when the switch cabinet is on fire due to a short circuit and the flame sensor and the smoke sensor lose power supply, the temperature and the fire state of the switch cabinet are determined by detecting the temperature and pressure in the switch cabinet, and the workers are notified to inspect and extinguish the fire in time; by marking the fire position on the outer side of the switch cabinet, it is convenient for the workers to know the fire position after arriving at the scene, and it is convenient for the workers to extinguish the fire in an appropriate manner; when the temperature of the contact point is detected to be abnormal, it is determined whether the contact is poor due to dust adhesion, and the workers are notified to inspect and repair; the fire position in the switch cabinet is detected by the flame sensor, and then the lower nozzle and the upper nozzle are used to spray inert gas at the upper and lower positions of the fire point at the same time to isolate the air at the fire position for extinguishing the fire, thereby reducing the damage to the electrical components in the switch cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the electric slide rail, the first motor and the arc-shaped slide rail of the present invention;

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the extrusion part, the first motor and the upper nozzle of the present invention;

[0018] Figure 4 It is a schematic diagram of the three-dimensional structure of the detection shell, the heat transfer plate and the trigger shell of the present invention;

[0019] Figure 5 It is a schematic diagram of the three-dimensional structure of the detection shell, the heat transfer plate and the air bag of the present invention;

[0020] Figure 6 It is a schematic diagram of the three-dimensional structure of the heat transfer piston, the extrusion piston and the trigger member of the present invention;

[0021] Figure 7 It is a three-dimensional structural schematic diagram of the positioning shell, the cover plate and the blocking plate of the present invention;

[0022] Figure 8 It is a schematic diagram of the three-dimensional structure of the second motor, the lower nozzle and the gas storage tank of the present invention;

[0023] Fig. 9 It is a three-dimensional structural schematic diagram of the lower nozzle, the connecting frame and the upper nozzle of the present invention;

[0024] Fig.10It is a three-dimensional structural schematic diagram of the electric slide rail, the mounting block and the cleaning bracket of the present invention;

[0025] Fig.11 It is a three-dimensional structural schematic diagram of the electric push rod, the sliding frame and the arc-shaped sliding rail of the present invention.

[0026] The meanings of the reference numerals in the figure are: 1-mounting plate, 2-electric slide rail, 3-mounting block, 4-flame sensor, 5-smoke sensor, 6-detection shell, 7-heat transfer plate, 8-air bag, 801-storage chamber, 9-trigger shell, 10-heat transfer piston, 11-extrusion piston, 111-trigger chamber, 12-trigger member, 13-alarm cylinder, 14-sliding piston, 15-sliding rod, 16-knocking ball, 17-knocking basin, 18-extrusion wedge, 19-extrusion member, 191-extrusion chamber, 19 2-air inlet hole, 20-one-way valve, 21-first motor, 22-winding wheel, 23-fixing part, 24-electromagnet, 25-pull rope, 26-positioning shell, 27-cover plate, 28-blocking plate, 29-observation window, 30-limiting part, 31-second motor, 32-lower nozzle, 33-gas storage tank, 34-solenoid valve, 35-connecting frame, 36-upper nozzle, 37-cleaning bracket, 38-electric push rod, 39-sliding frame, 40-arc slide rail, 41-third motor, 42-fan blade. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

[0028] Embodiment 1: A fire extinguishing alarm device for a high voltage switch cabinet, such as Figure 1-Figure 4As shown, it includes a mounting plate 1, an electric slide rail 2 is fixedly connected to the upper part of the rear side of the mounting plate 1, the electric slide rail 2 is slidably connected to a mounting block 3 through a slider, the mounting block 3 is located above the horizontal plane of the isolation knife switch connection point, so as to facilitate the detection of the temperature and smoke caused by the short circuit at the connection point, a battery, a control terminal and a buzzer are installed in the mounting block 3, the control terminal in the mounting block 3 is connected to the remote control terminal through the Internet of Things, when the temperature rise and smoke in the switch cabinet are detected, the control terminal transmits the signal to the remote control terminal through the Internet of Things, and then the worker goes to the switch cabinet that sends the alarm signal for maintenance after receiving the alarm signal, and the battery is electrically connected to the switch cabinet and the control terminal, a flame sensor 4 electrically connected to the control terminal and a smoke sensor 5 electrically connected to the control terminal are installed on the rear side of the mounting block 3, the flame sensor 4 is used to detect the position of the flame and the temperature in the switch cabinet (the flame sensor 4 is an existing device and will not be described in detail), the electric slide rail 2 and the mounting block 3 The buzzers inside are all electrically connected to the control terminal in the mounting block 3. The mounting block 3 drives the flame sensor 4 and the smoke sensor 5 to move back and forth left and right to detect the temperature of each gate piece of the isolation knife switch, detect the abnormal temperature of the isolation knife switch at the first time, shorten the distance of smoke and temperature transmission, detect the abnormal temperature in time and notify the workers to extinguish the fire through the buzzer to prevent the fire from spreading and protect other high-voltage switch cabinets in the same machine room. A detection shell 6 is fixedly connected to the middle of the rear side of the mounting plate 1. The rear side of the detection shell 6 is sealed and slidably connected with two heat transfer plates 7 distributed in left and right mirror images. An air bag 8 is fixedly connected to the front side of the heat transfer plate 7. Ammonia is stored in the air bag 8. The characteristic of ammonia expanding greatly when heated is used to detect the temperature change in the switch cabinet. The air bag 8 is located in the detection shell 6. The two heat transfer plates 7 cooperate with the detection shell 6 to form two force storage chambers 801 distributed in mirror images. The mounting plate 1 is provided with a control component for controlling the gas flow in the force storage chamber 801, and the mounting plate 1 is provided with an alarm component.

[0029] like Figure 3-Figure 6 As shown, the control component includes a trigger shell 9, which is fixed to the right part of the rear side of the mounting plate 1. Two through holes are arranged in the middle of the trigger shell 9 in mirror image distribution. The two force storage chambers 801 are connected with the through hole on the upper side of the trigger shell 9 through a conduit. The heat transfer piston 10, the extrusion piston 11 and the trigger member 12 are sealed and slidably connected in sequence from back to front in the trigger shell 9. The front side of the heat transfer piston 10, the rear side of the extrusion piston 11 and the trigger shell 9 cooperate to form a trigger chamber 111. Ammonia is stored in the trigger chamber 111. The front side of the extrusion piston 11 is fixed to the trigger member 12. A spring is fixed between the front side of the trigger member 12 and the trigger shell 9. The trigger member 12 cooperates with the through hole of the trigger shell 9. Initially, the trigger member 12 blocks the through hole of the trigger shell 9. The detection shell 6 is provided with an energy storage component for storing force in the force storage chamber 801.

[0030] like Figure 3 , Figure 4 and Figure 6 As shown, the alarm assembly includes an alarm cylinder 13, which is fixed to the right part of the rear side of the mounting plate 1, the upper side of the alarm cylinder 13 is fixed to the trigger shell 9, and the through hole on the lower side of the trigger shell 9 is connected to the alarm cylinder 13, the upper part of the alarm cylinder 13 is sealed and slidably connected with a sliding piston 14, the middle part of the lower side of the sliding piston 14 is fixedly connected with a sliding rod 15, and the rear side of the sliding rod 15 is fixedly connected with a plurality of equally distributed knocking balls 16 through a spring, and the knocking balls 16 cooperate with the alarm cylinder 13, and the knocking balls 16 are in contact with the alarm cylinder 13. When the lower side of the alarm tube 13 contacts, the alarm tube 13 hinders the movement of the knocking ball 16 and causes the spring adjacent to the knocking ball 16 to bend to accumulate force. A knocking basin 17 is fixedly connected to the lower side of the alarm tube 13, and the knocking basin 17 cooperates with the knocking ball 16. After the knocking ball 16 loses contact with the alarm tube 13 under the action of the adjacent spring, it hits the knocking basin 17, causing the knocking basin 17 to vibrate and make a sound. By detecting the pressure and temperature in the switch cabinet, it is determined whether a fire occurs, and when a fire occurs, it notifies the workers to extinguish the fire through sound.

[0031] like Figure 4 , Figure 5 and Figure 7 As shown, the energy storage assembly includes an extrusion wedge 18, which is fixed to the lower side of the mounting block 3. The rear side of the detection shell 6 is sealed and slidably connected with three equidistantly distributed extrusion pieces 19. A spring is fixed between the extrusion piece 19 and the detection shell 6. The three extrusion pieces 19 are all matched with the extrusion wedge 18. The extrusion wedge 18 contacts the adjacent extrusion piece 19 and squeezes it into the detection shell 6. The three extrusion pieces 19 are matched with the detection shell 6 to form three equidistantly distributed extrusion chambers 191. The detection shell 6 is provided with three equidistantly distributed air inlet holes 192. The extrusion chamber 191 is connected to the interior of the high-voltage switch cabinet through the adjacent air inlet holes 192. The detection shell 6 is provided with four mirror-distributed vents, and the four vents connect the adjacent extrusion chambers 191 with the adjacent force storage chambers 801. A one-way valve 20 is provided at the vent of the detection shell 6, and the connection direction of the one-way valve 20 is from the adjacent extrusion chamber 191 to the adjacent force storage chamber 801.

[0032] When installing the switch cabinet, the worker installs the mounting plate 1 on the inner side of the switch cabinet back plate by bolts, and makes the electric slide rail 2 located above the horizontal plane of the static contact, so that the mounting block 3 and all parts thereon can move normally. Then the worker closes the switch cabinet back plate. After the switch cabinet is put into use, the control terminal in the mounting block 3 drives the electric slide rail 2 to start at regular intervals, the slider drives the mounting block 3 to move, the mounting block 3 drives the flame sensor 4 and the smoke sensor 5 to move, and when the mounting block 3 moves to the same vertical plane as the gate piece, the mounting block 3 stops moving. At this time, the flame sensor 4 detects the temperature of the contact point of the gate piece and observes whether there is fire at the position of the gate piece. When the flame sensor 4 detects abnormal temperature and light, the control terminal starts the smoke sensor 5. If the smoke sensor 5 detects smoke, it starts the buzzer in the mounting block 3. At the same time, the control terminal transmits the alarm signal to the remote control terminal through the Internet of Things. After receiving the alarm signal, the worker rushes to extinguish the switch cabinet, and at the same time, the workers near the switch cabinet hear the sound and rush to extinguish the switch cabinet.

[0033] When the mounting block 3 moves left and right, the mounting block 3 drives the extrusion wedge 18 to contact the adjacent extrusion piece 19 and squeeze it into the detection shell 6, compressing the spring adjacent to the extrusion piece 19. As the extrusion piece 19 moves, the extrusion piece 19 gradually blocks the adjacent air inlet hole 192, so that the volume in the adjacent extrusion chamber 191 decreases and the pressure increases. The adjacent one-way valve 20 opens, and the gas in the extrusion chamber 191 flows to the adjacent force storage chamber 801 through the adjacent one-way valve 20, so that the pressure in the force storage chamber 801 increases and compresses the ammonia in the airbag 8. As the mounting block 3 drives the extrusion wedge 18 to move, the extrusion wedge 18 gradually loses contact with the adjacent extrusion piece 19. At this time, the extrusion piece 19 is reset under the action of the adjacent spring, and the adjacent extrusion chamber is The volume in 191 increases and the pressure decreases, and the adjacent one-way valve 20 is closed. As the extrusion piece 19 moves, the extrusion piece 19 gradually releases the blockage of the adjacent air inlet hole 192, so that the gas in the switch cabinet enters the adjacent extrusion chamber 191 through the air inlet hole 192. As the mounting block 3 drives the extrusion wedge block 18 to move and squeezes the adjacent extrusion piece 19 to move, until the extrusion piece 19 moves into the detection shell 6, when the air pressure in the adjacent extrusion chamber 191 is equal to the air pressure in the adjacent force storage chamber 801, the one-way valve 20 does not open, and the adjacent force storage chamber 801 is no longer inflated. At the same time, as the temperature in the switch cabinet rises, the ammonia gas in the airbag 8 expands and increases the volume of the airbag 8, so that the volume of the adjacent force storage chamber 801 decreases and the air pressure increases.

[0034] When a fire occurs in the switch cabinet, the temperature in the switch cabinet increases, and the pressure in the switch cabinet increases at the same time. The air pressure in the switch cabinet pushes the heat transfer piston 10 into the trigger shell 9, and the heat transfer piston 10 squeezes the ammonia in the adjacent trigger chamber 111. The ammonia in the trigger chamber 111 expands due to the heat, and the ammonia in the trigger chamber 111 pushes the squeezing piston 11 and the trigger member 12 to move forward, compressing the spring adjacent to the trigger member 12, so that the trigger member 12 releases the blockage of the through hole of the trigger shell 9, and then the gas in the two force storage chambers 801 flows to the alarm tube 13 through the conduit and the through hole of the trigger shell 9, and pushes the sliding piston 14 to move downward, and the sliding piston 14 drives the sliding rod 15 and the knocking ball 16 to move downward, and the knocking balls 16 distributed equidistantly automatically From bottom to top, it contacts with the lower side surface inside the alarm tube 13 in turn, and as the sliding rod 15 moves downward, the spring adjacent to the knocking ball 16 gradually bends, and the knocking ball 16 gradually loses contact with the lower side surface of the alarm tube 13 and hits the knocking basin 17 under the action of its adjacent spring, causing the knocking basin 17 to vibrate and make a sound. At this time, the workers outside hear the sound of the knocking basin 17 and rush to extinguish the fire in the switch cabinet to prevent the electrical components inside the switch cabinet from being damaged due to the fire. When the remote control terminal does not receive the signal, the workers can be notified by sound transmission to come and extinguish the fire. After the workers put out the fire, they remove the installation plate 1 for replacement and repair the switch cabinet, and then the workers install the new device inside the switch cabinet.

[0035] Embodiment 2: Based on embodiment 1, Figure 4 and Figure 7 As shown, it also includes a trigger mechanism arranged on the upper side of the mounting block 3, the trigger mechanism is used to let the workers know the location of the fire point in the switch cabinet, the trigger mechanism includes a first motor 21 electrically connected to the control terminal in the mounting block 3, the first motor 21 is fixedly connected to the upper side of the mounting block 3, the output shaft of the first motor 21 is fixedly connected to a winding wheel 22, the right side of the mounting block 3 is fixedly connected to a fixing member 23, the fixing member 23 is slidably connected to an electromagnet 24, and a spring is fixedly connected between the two, the electromagnet 24 is electrically connected to the control terminal in the mounting block 3, a pull rope 25 is fixedly connected between the winding wheel 22 and the left part of the lower side of the electromagnet 24, and the electromagnet 24 is provided with a display component for facilitating workers to observe the fire location.

[0036] like Figure 2 , Figure 4 and Figure 7As shown, the display assembly includes three equidistantly distributed positioning shells 26, iodine liquid is stored in the positioning shells 26, the three positioning shells 26 are arranged on the outer side of the back plate of the switch cabinet, and the three positioning shells 26 correspond to the three gates of the isolation knife switch respectively. The upper side of the positioning shell 26 is rotatably connected to a cover plate 27, and the middle part of the positioning shell 26 is rotatably connected to a blocking plate 28, and starch is stored on the upper side of the blocking plate 28. The lower part of the front side of the positioning shell 26 is fixedly connected to an observation window 29, and the lower part of the rear side of the positioning shell 26 is slidably connected to a limiting member 30, and a spring is fixedly connected between the two. The limiting member 30 cooperates with the electromagnet 24 to prevent the flame sensor 4 and the smoke sensor 4 from being blocked. When the sensor 5 detects a fire at the gate piece, the mounting block 3 stops at the position corresponding to the fire gate piece. At this time, the electromagnet 24 moves downward and drives the limit member 30 to release the cooperation with the adjacent blocking plate 28 through magnetic force. The limit member 30 cooperates with the adjacent blocking plate 28. Initially, the limit member 30 limits the adjacent blocking plate 28 to keep the blocking plate 28 horizontal. The sum of the magnetic attraction force of the electromagnet 24 on the limit member 30 and the gravity of the limit member 30 is greater than the elastic force of the adjacent spring of the limit member 30. The gravity of the limit member 30 is less than the elastic force of the adjacent spring of the limit member 30, which is used to facilitate the electromagnet 24 to drive the adjacent limit member 30 to move downward through magnetic force.

[0037] When the mounting block 3 drives the flame sensor 4 and the smoke sensor 5 to move and detect the state of the gate piece, if the flame sensor 4 detects that the gate piece temperature is abnormal and the smoke sensor 5 detects smoke, the slider drives the mounting block 3 to stop moving, and the control terminal in the mounting block 3 supplies power to the first motor 21 and the electromagnet 24. The output shaft of the first motor 21 drives the winding wheel 22 to rotate, and the winding wheel 22 drives the electromagnet 24 to move downward through the pull rope 25 and compresses the spring adjacent to the fixing member 23. The electromagnet 24 moves downward and drives the adjacent limiting member 30 to move downward through the magnetic force, and compresses the spring adjacent to the limiting member 30. The limiting member 30 loses contact with the adjacent blocking plate 28, and the blocking plate 28 swings under the action of its own gravity, so that the starch on the upper side of the blocking plate 28 falls into the lower side of the adjacent positioning shell 26, and contacts with the iodine liquid on the lower side of the positioning shell 26 to appear blue, so that the workers can know the fire location of the switch cabinet in time after they arrive, and guide the workers to extinguish the fire.

[0038] Embodiment 3: Based on embodiment 2, Figure 3 , Figure 8 and Fig. 9As shown, it also includes a spraying mechanism arranged on the upper side of the mounting block 3, the spraying mechanism is used for fire extinguishing, and the spraying mechanism includes a second motor 31 electrically connected to the control terminal, the second motor 31 is rotatably connected to the oblique upper side of the mounting block 3 through a bracket, a gear ring is fixedly connected to the outer side of the second motor 31, the output shaft of the first motor 21 is fixedly connected to a gear meshing with the gear ring on the outer side of the second motor 31, the output shaft of the second motor 31 is fixedly connected to a lower nozzle 32, and a gas tank 33 is fixedly connected to the left part of the rear side of the mounting plate 1, and a solenoid valve 34 is arranged on the upper part of the gas tank 33, the solenoid valve 34 is electrically connected to the control terminal, and the gas tank 33 is connected to the lower nozzle 32 through a conduit.

[0039] like Figure 3 and Fig. 9 As shown, the second motor 31 is fixedly connected to the connecting frame 35, and the connecting frame 35 is rotatably connected to the upper nozzle 36. The upper nozzle 36 is connected to the gas storage tank 33 through a conduit. The outer sides of the upper nozzle 36 and the lower nozzle 32 are fixedly connected with a toothed ring, and the upper nozzle 36 and the lower nozzle 32 are transmitted through the toothed ring on their outer sides.

[0040] After the switch cabinet caught fire, the workers were unable to put out the fire immediately after hearing the alarm, causing the fire in the switch cabinet to increase. The solution is as follows: after the flame sensor 4 and the smoke sensor 5 detect the fire, the flame sensor 4 finds the fire location, and the control terminal starts the first motor 21. The output shaft of the first motor 21 rotates and drives the second motor 31 and the lower nozzle 32 to swing, so that the lower nozzle 32 is facing the fire point. Then the control terminal starts the solenoid valve 34, and the inert gas in the gas tank 33 flows to the lower nozzle 32 through the conduit and is sprayed out through the lower nozzle 32, isolating the air at the fire point to extinguish the fire. When the fire spreads too quickly and causes multiple fires, the output shaft of the first motor 21 swings back and forth to drive the lower nozzle 32 to swing to extinguish the fire.

[0041] At the same time as the first motor 21 is started, the control terminal controls the second motor 31 to start, and the output shaft of the second motor 31 drives the lower nozzle 32 to swing, and the lower nozzle 32 drives the upper nozzle 36 to swing through the gear set, so that the angle between the upper nozzle 36 and the lower nozzle 32 increases, and under the rotation of the output shaft of the first motor 21, the ignition point and the flame are located between the angle formed by the upper nozzle 36 and the lower nozzle 32, and then the first motor 21 stops and the output shaft of the second motor 31 reverses, so that the angle between the upper nozzle 36 and the lower nozzle 32 is reduced, the flame is gradually compressed and finally extinguished.

[0042] Embodiment 4: Based on embodiment 3, Figure 2 , Figure 3 , Fig.10 and Fig.11As shown, a cleaning mechanism is also included which is arranged on the rear side of the mounting block 3. The cleaning mechanism is used to clean the dust in the switch cabinet. The cleaning mechanism includes a cleaning bracket 37, which is fixed to the middle part of the right side of the mounting block 3. The cleaning bracket 37 is fixed with an electric push rod 38, which is electrically connected to the control terminal in the mounting block 3. The telescopic end of the electric push rod 38 is fixed with a sliding frame 39, which is slidably connected to the cleaning bracket 37. The sliding frame 39 is fixed with an arc-shaped slide rail 40, which is electrically connected to the control terminal in the mounting block 3. The arc-shaped slide rail 40 is slidably connected to the third motor 41 through a slider, which is electrically connected to the control terminal in the mounting block 3. The output shaft of the third motor 41 is fixed with a fan blade 42. When the flame sensor 4 detects that the temperature of the gate piece is abnormal, the control terminal controls the fan blade 42 to blow the dust at the connection point. During this period, the temperature of the gate piece is detected to determine whether the poor contact is caused by dust or other reasons, and promptly notify the workers to perform maintenance.

[0043] Since dust exists at the position where the gate piece contacts, it will cause poor contact between the gate piece and the static contact and thus cause heating. Therefore, when the flame sensor 4 detects abnormal gate piece temperature for a long time but does not detect fire and the smoke sensor 5 does not detect smoke, the control terminal in the mounting block 3 controls the electric push rod 38, the arc slide rail 40 and the third motor 41 to start, so that the telescopic end of the electric push rod 38 drives the sliding frame 39 and the arc slide rail 40 to move, so that the contact point of the gate piece is located at the center of the arc slide rail 40, and the control terminal stops the sliding frame 39. At this time, the slider of the arc slide rail 40 drives the third motor 41 to swing back and forth, and the third motor The output shaft of 41 rotates and drives the fan blades 42 to rotate, and the fan blades 42 blow away the dust at the contact position of the adjacent brake pads. During this process, the flame sensor 4 continues to detect its temperature until the temperature of the contact point decreases, and the control terminal stops the arc slide 40 and the third motor 41. At the same time, the control terminal controls the telescopic end of the electric push rod 38 to drive the sliding frame 39 and the arc slide 40 to retract, and stops the electric push rod 38 after the sliding frame 39 is reset. When the flame sensor 4 detects that the temperature of the brake pad cannot be reduced, the control terminal starts the buzzer and transmits the alarm signal to the remote control terminal through the Internet of Things to notify the workers to carry out maintenance.

[0044] It should be particularly noted that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A fire extinguishing alarm device for a high voltage switch cabinet, characterized in that: The invention comprises a mounting plate (1), the mounting plate (1) being fixedly connected to an electric slide rail (2), the electric slide rail (2) being slidably connected to a mounting block (3) via a slider, a storage battery, a control terminal and a buzzer being installed in the mounting block (3), the control terminal in the mounting block (3) being connected to a remote control terminal via the Internet of Things, and the storage battery is electrically connected to a switch cabinet and the control terminal, the mounting block (3) being installed with a flame sensor (4) and a smoke sensor (5), the electric slide rail (2), the buzzer in the mounting block (3), the flame sensor (4) and the smoke sensor (5) The mounting plate (1) is fixedly connected to a detection shell (6), the detection shell (6) is sealingly and slidably connected to a heat transfer plate (7) with mirror distribution, the heat transfer plate (7) is fixedly connected to a side of the detection shell (6) close to the mounting plate (1) with an air bag (8) located in the detection shell (6), the heat transfer plates (7) with mirror distribution cooperate with the detection shell (6) to form a force storage chamber (801) with mirror distribution, the mounting plate (1) is provided with a control component for controlling the flow of gas in the force storage chamber (801), and the mounting plate (1) is provided with an alarm component; The control component comprises a trigger shell (9), the trigger shell (9) being fixedly connected to the mounting plate (1), the trigger shell (9) being provided with through holes distributed in a mirror image, the force storage chamber (801) distributed in a mirror image is communicated with the through hole on the trigger shell (9) near the detection shell (6) via a conduit, the trigger shell (9) being sealingly and slidably connected with a heat transfer piston (10), an extrusion piston (11) and a trigger member (12), the heat transfer piston (10), the extrusion piston (11) and the trigger shell (9) being cooperated to form a trigger chamber (111), the side of the extrusion piston (11) away from the heat transfer piston (10) being fixedly connected to the trigger member (12), a spring being fixedly connected between the trigger member (12) and the trigger shell (9), the trigger member (12) being cooperated with the through hole of the trigger shell (9), and the detection shell (6) being provided with an energy storage component for storing force in the force storage chamber (801); The alarm assembly comprises an alarm tube (13), the alarm tube (13) being fixedly connected to the mounting plate (1), the alarm tube (13) being fixedly connected to the trigger shell (9), and a through hole on a side of the trigger shell (9) away from the detection shell (6) being communicated with the alarm tube (13), a sliding piston (14) being sealingly slidably connected inside the alarm tube (13), a sliding rod (15) being fixedly connected to a side of the sliding piston (14) away from the trigger shell (9), the sliding rod (15) being fixedly connected to knocking balls (16) distributed at equal intervals via a spring, the knocking balls (16) being matched with the alarm tube (13), and a knocking basin (17) matching with the knocking balls (16) being fixedly connected to a side of the alarm tube (13) away from the trigger shell (9); The energy storage component comprises an extrusion wedge (18), the extrusion wedge (18) being fixedly connected to a side of the mounting block (3) close to the detection shell (6), the detection shell (6) being sealingly and slidably connected with extrusion pieces (19) distributed equidistantly, a spring being fixedly connected between the extrusion pieces (19) and the detection shell (6), the extrusion pieces (19) distributed equidistantly all cooperate with the extrusion wedge (18), the extrusion pieces (19) distributed equidistantly all cooperate with the detection shell (6) to form extrusion chambers (191) distributed equidistantly, the detection shell (6) being provided with air inlet holes (192) distributed equidistantly and communicating with adjacent extrusion chambers (191), the detection shell (6) being provided with vent holes distributed in a mirror image, the vent holes of the detection shell (6) being used to communicate adjacent extrusion chambers (191) with adjacent energy storage chambers (801), and a one-way valve (20) being provided at the vent holes of the detection shell (6); The switch cabinet further comprises a trigger mechanism arranged on a side of the mounting block (3) away from the detection shell (6), the trigger mechanism being used to inform a worker of the location of a fire point in the switch cabinet, the trigger mechanism comprising a first motor (21), the first motor (21) being fixedly connected to a side of the mounting block (3) away from the detection shell (6), the first motor (21) being electrically connected to a control terminal in the mounting block (3), an output shaft of the first motor (21) being fixedly connected to a winding wheel (22), the mounting block (3) being fixedly connected to a fixing member (23), the fixing member (23) being slidably connected to an electromagnet (24) electrically connected to the control terminal in the mounting block (3), a spring being fixedly connected between the electromagnet (24) and the fixing member (23), a pull rope (25) being fixedly connected between the winding wheel (22) and the electromagnet (24), and the electromagnet (24) being provided with a display component for facilitating workers to observe the location of the fire; The display assembly includes equidistantly distributed positioning shells (26), the equidistantly distributed positioning shells (26) are arranged on a side of the switch cabinet back plate away from the mounting block (3), the positioning shells (26) are rotatably connected to a cover plate (27) and a blocking plate (28), the positioning shell (26) is fixedly connected to an observation window (29), and the positioning shell (26) is slidably connected to a limiting member (30) on a side close to the electromagnet (24), a spring is fixedly connected between the limiting member (30) and the adjacent positioning shell (26), the limiting member (30) cooperates with the electromagnet (24), and the limiting member (30) cooperates with the adjacent blocking plate (28).

2. The fire extinguishing alarm device for a high-voltage switch cabinet according to claim 1 is characterized in that: The sum of the magnetic attraction force of the electromagnet (24) on the limiting member (30) and the gravity of the limiting member (30) is greater than the elastic force of the spring adjacent to the limiting member (30), and the gravity of the limiting member (30) is less than the elastic force of the spring adjacent to the limiting member (30).

3. The fire extinguishing alarm device for a high voltage switch cabinet according to claim 1 is characterized in that: The invention also comprises a spraying mechanism arranged on a side of the mounting block (3) away from the detection shell (6), the spraying mechanism being used for extinguishing fire, the spraying mechanism comprising a second motor (31), the second motor (31) being rotatably connected to the mounting block (3), the second motor (31) being electrically connected to a control terminal in the mounting block (3), the second motor (31) being driven by an output shaft of the second motor (31) and the first motor (21) via a gear set, the output shaft of the second motor (31) being fixedly connected to a lower nozzle (32), the mounting plate (1) being fixedly connected to a gas storage tank (33), the gas storage tank (33) being provided with a solenoid valve (34) electrically connected to the control terminal in the mounting block (3), and the gas storage tank (33) being connected to the lower nozzle (32) via a conduit.

4. The fire extinguishing alarm device for a high-voltage switch cabinet according to claim 3 is characterized in that: The second motor (31) is fixedly connected to a connecting frame (35), and the connecting frame (35) is rotatably connected to an upper nozzle (36) communicated with the gas storage tank (33), and the upper nozzle (36) and the lower nozzle (32) are driven by a gear set.

5. The fire extinguishing alarm device for high-voltage switch cabinet according to claim 3 is characterized in that: The invention also comprises a cleaning mechanism arranged on a side of the mounting block (3) away from the positioning shell (26), the cleaning mechanism being used for cleaning dust in the switch cabinet, the cleaning mechanism comprising a cleaning bracket (37), the cleaning bracket (37) being fixedly connected to the mounting block (3), the cleaning bracket (37) being fixedly connected to an electric push rod (38) electrically connected to a control terminal in the mounting block (3), the telescopic end of the electric push rod (38) being fixedly connected to a sliding frame (39) slidably connected to the cleaning bracket (37), the sliding frame (39) being fixedly connected to an arcuate slide rail (40) electrically connected to the control terminal in the mounting block (3), the arcuate slide rail (40) being slidably connected to a third motor (41) electrically connected to the control terminal in the mounting block (3) via a slider, and the output shaft of the third motor (41) being fixedly connected to a fan blade (42).

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