CN115311813A

CN115311813A - Circuit alarm device for industrial automation

Info

Publication number: CN115311813A
Application number: CN202210990041.4A
Authority: CN
Inventors: 朱旭刚; 王军; 王亮亮; 王秀翠; 朱佳; 秦继林; 杜玉霞
Original assignee: Shandong Yingyan Technology Co ltd; Shandong Institute of Commerce and Technology
Current assignee: Shandong Yingyan Technology Co ltd; Shandong Institute of Commerce and Technology
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-11-08

Abstract

The invention discloses a circuit alarm device for industrial automation, and relates to the technical field of circuit alarms. A circuit alarm device for industrial automation, comprising an alarm box and a box door rotatably connected to the alarm box, further comprising: the invention monitors the temperature in the temperature control box in real time through the temperature sensor fixedly connected on the temperature control box and transmits signals into the control processor to control the four indicator lamps, thereby being convenient for workers to judge the load condition of an industrial circuit according to the indicator lamps, and when the industrial circuit is overloaded, the circuit connected with the industrial electric connection wire can be powered off through the power-off motor operation and the electronic elements in the alarm box can be protected against fire.

Description

Circuit alarm device for industrial automation

Technical Field

The invention belongs to the technical field of circuit alarm, and particularly relates to a circuit alarm device for industrial automation.

Background

The alarm device is an electronic product which reminds or warns people of taking certain action in the forms of sound, light, air pressure and the like in order to prevent or prevent the consequences caused by certain events, and the alarm device is often installed in a circuit in order to alarm when the circuit fails in order to prevent the accidental loss of property caused by circuit failure in the industrial automatic production process.

The circuit alarm device that uses in the current industrial automation production process can only carry out the early warning when the short circuit takes place for the circuit more, and can't carry out real-time feedback to the load condition of circuit, can't effectively feed back when the circuit transships for a long time, easily leads to the circuit to take place local overheat and cause the conflagration to also can't in time automatic cutout industrial power consumption when the conflagration breaks out, the function is comparatively single.

The present invention has been made in view of this situation.

Disclosure of Invention

The technical problem underlying the present invention is to overcome the drawbacks of the prior art and to provide a circuit alarm device for industrial automation that overcomes or at least partially solves the above mentioned problems.

In order to solve the technical problems, the invention adopts the technical scheme that:

a circuit alarm device for industrial automation, comprising an alarm box and a box door rotatably connected to the alarm box, further comprising: the temperature control box is connected with one of the industrial electric wires through a connecting wire, the connecting wire and one end of the industrial electric wire close to each other are fixedly connected with an insulating wiring board on which a self-telescopic wiring terminal is arranged, and the temperature control box is fixedly connected with a temperature sensor; the alarm box comprises a support plate fixedly connected in the alarm box, an insulating sleeve is fixedly connected to the support plate, a second metal rod is connected to the insulating sleeve in a sliding mode, the second metal rod is matched with a self-telescopic wiring terminal on an insulating wiring board, a second spring is arranged in the insulating sleeve, two ends of the second spring are fixedly connected with the support plate and the second metal rod respectively, and two alarm wiring terminals are fixedly connected to the insulating sleeve; the pulling assembly is used for driving the second metal rod to slide in the insulating sleeve; four indicator lamps and a buzzer alarm fixedly connected to the box door; fixed connection is in battery and control processor in the alarm box, battery and pilot lamp, control processor, buzzer siren, temperature sensor electric connection.

In order to facilitate the cooperation of self-stretching wiring end and second metal pole, preferably, the self-stretching wiring end includes metal sleeve, metal sleeve fixed connection is on insulating wiring board, metal sleeve with correspond industrial electricity wiring electric connection, sliding connection has the metal conducting block in the metal sleeve, be equipped with first spring in the metal sleeve, first spring both ends respectively with insulating wiring board and metal conducting block fixed connection.

In order to facilitate the rapid judgment of the load condition of the industrial power utilization circuit through the indicator lamps, further, the four indicator lamps sequentially emit green, yellow, blue and red lights from top to bottom after being powered on.

In order to facilitate heat dissipation of a storage battery, a control processor and a temperature control box in the alarm box, preferably, a negative pressure box is fixedly connected to the alarm box and communicated with the alarm box through an exhaust port, an exhaust pipe is communicated to the negative pressure box and internally provided with a check valve, an exhaust motor is fixedly connected to the exhaust port through a support, and an output end of the exhaust motor extends to a fan fixedly connected to the interior of the negative pressure box.

In order to facilitate the current speed in the industrial circuit to be temperature change and feed back to the control processor, further, the temperature control box is upper and lower open-ended form, the temperature control box upper shed communicates with the gas vent correspondingly, fixedly connected with heating resistor in the temperature control box, heating resistor both ends respectively with industrial electricity wiring electric connection.

In order to facilitate smoke detection and dust removal of sucked air, preferably, a filter box is fixedly connected in the alarm box, an activated carbon block is fixedly connected in the filter box, the bottom of the alarm box is communicated with an air suction pipe, the air suction pipe is communicated with the input end of the filter box, the output end of the filter box is communicated with the interior of the alarm box, a smoke sensor is fixedly connected on the air suction pipe, and the smoke sensor is electrically connected with the control processor.

In order to facilitate the driving of the second metal rod to slide in the insulating sleeve, the pulling assembly comprises a power-off motor, the power-off motor is fixedly connected in the alarm box, the power-off motor is connected with a control processor through a wire, a gear is fixedly connected to the output end of the power-off motor, a sliding cavity is formed in the alarm box, a sealing plate is slidably connected in the sliding cavity, a threaded rod is fixedly connected to one end of the sealing plate, a toothed ring is connected to the alarm box in a rotating mode, the outer diameter of the toothed ring is meshed with the gear, the inner diameter of the toothed ring is in threaded connection with the threaded rod, an insulating wire is fixedly connected to the sealing plate, and one end of the insulating wire is fixedly connected with one end of the second metal rod.

In order to facilitate the carbon dioxide filling of the alarm box for fire prevention and extinguishment, the carbon dioxide fire extinguisher is fixedly connected in the alarm box, a worm wheel is fixed on a rotating switch shaft of the carbon dioxide fire extinguisher, a worm is rotatably connected in the alarm box and meshed with the worm wheel, a friction guide wheel is fixedly connected on the worm, and the middle part of the insulating wire is wound on the friction guide wheel.

After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects: the temperature sensor fixedly connected to the temperature control box monitors the temperature in the temperature control box in real time, and transmits signals into the control processor to control the four indicator lamps, so that workers can conveniently judge the load condition of an industrial line according to the indicator lamps, and when the industrial line is overloaded, the line connected with an industrial power wiring can be powered off through the power-off motor work and electronic elements in the alarm box can be subjected to fire protection, and when a fire disaster occurs in the installation environment of the alarm box, the power-off motor work can be controlled to power off the industrial line in time, so that the fire disaster is prevented from burning to the electrified line and spreading rapidly.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

In the drawings:

fig. 1 is a first front view of a circuit alarm device for industrial automation according to the present invention;

FIG. 2 is a schematic diagram of a circuit alarm apparatus for industrial automation, shown in FIG. 1A;

FIG. 3 is a second front view of a circuit alarm device for industrial automation according to the present invention;

FIG. 4 is a top view of a circuit alarm device for industrial automation in accordance with the present invention;

FIG. 5 is a schematic structural diagram of a temperature control box of a circuit alarm device for industrial automation according to the present invention.

In the figure: 1. an alarm box; 12. industrial power wiring; 121. an insulating wiring board; 2. a box door; 22. an indicator light; 24. a buzzer alarm; 3. a negative pressure box; 31. an exhaust pipe; 32. a one-way valve; 4. an air exhaust motor; 41. a fan; 5. a temperature control box; 51. a temperature sensor; 54. a heating resistor; 5541. a metal sleeve; 5542. a metal conductive block; 5543. a first spring; 6. a battery; 61. a control processor; 7. powering off the motor; 71. a gear; 72. a threaded rod; 73. a sealing plate; 75. a toothed ring; 8. a filter cartridge; 81. activated carbon; 82. an air intake duct; 83. a smoke sensor; 9. a carbon dioxide extinguisher; 91. a worm gear; 92. a worm; 93. a friction guide wheel; 10. a support plate; 101. an insulating sleeve; 102. the wiring end of the alarm; 103. a second metal rod; 104. a second spring; 105. and (4) insulating the wire.

It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it for those skilled in the art by reference to specific embodiments.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.

Example (b):

referring to fig. 1 to 5, a circuit alarm device for industrial automation includes an alarm box 1 and a box door 2 rotatably connected to the alarm box 1, and further includes: the alarm box comprises two industrial electric connection wires 12 connected to the alarm box 1, wherein the two industrial electric connection wires 12 are electrically connected through a temperature control box 5, the temperature control box 5 is connected with one industrial electric connection wire 12 through a connecting wire, the ends, close to each other, of the connecting wire and the industrial electric connection wire 12 are fixedly connected with an insulating wiring board 121, a self-telescopic wiring terminal is installed on the insulating wiring board, and a temperature sensor 51 is fixedly connected to the temperature control box 5; the alarm box comprises a support plate 10 fixedly connected in the alarm box 1, an insulating sleeve 101 is fixedly connected to the support plate 10, a second metal rod 103 is connected in the insulating sleeve 101 in a sliding mode, the second metal rod 103 is matched with a self-telescopic wiring terminal on an insulating wiring board 121, a second spring 104 is arranged in the insulating sleeve 101, two ends of the second spring 104 are respectively and fixedly connected with the support plate 10 and the second metal rod 103, and two alarm terminals 102 are fixedly connected to the insulating sleeve 101; a pulling assembly for driving the second metal rod 103 to slide in the insulating sleeve 101; four indicator lamps 22 and a buzzer alarm 24 which are fixedly connected with the box door 2; the storage battery 6 and the control processor 61 are fixedly connected in the alarm box 1, and the storage battery 6 is electrically connected with the indicator lamp 22, the control processor 61, the buzzer alarm 24 and the temperature sensor 51;

the self-telescopic wiring terminal comprises a metal sleeve 5541, the metal sleeve 5541 is fixedly connected to the insulating wiring board 121, the metal sleeve 5541 is electrically connected with the corresponding industrial electric wiring 12, a metal conductive block 5542 is connected in the metal sleeve 5541 in a sliding mode, a first spring 5543 is arranged in the metal sleeve 5541, two ends of the first spring 5543 are respectively and fixedly connected with the insulating wiring board 121 and the metal conductive block 5542, and the four indicator lamps 22 sequentially emit green, yellow, blue and red lights from top to bottom after being powered on;

the alarm box 1 is fixedly connected with a negative pressure box 3, the negative pressure box 3 is communicated with the alarm box 1 through an exhaust port, the negative pressure box 3 is communicated with an exhaust pipe 31, a one-way valve 32 is installed in the exhaust pipe 31, an exhaust motor 4 is fixedly connected in the exhaust port through a support, the output end of the exhaust motor 4 extends into the negative pressure box 3 and is fixedly connected with a fan 41, a temperature control box 5 is in an upper-lower opening shape, the upper opening of the temperature control box 5 is correspondingly communicated with the exhaust port, a heating resistor 54 is fixedly connected in the temperature control box 5, and two ends of the heating resistor 54 are respectively electrically connected with an industrial electric connection wire 12;

a filter box 8 is fixedly connected in the alarm box 1, an active carbon block 81 is fixedly connected in the filter box 8, the bottom of the alarm box 1 is communicated with an air suction pipe 82, the air suction pipe 82 is communicated with the input end of the filter box 8, the output end of the filter box 8 is communicated with the interior of the alarm box 1, a smoke sensor 83 is fixedly connected on the air suction pipe 82, the smoke sensor 83 is electrically connected with the control processor 61, the pulling assembly comprises a power-off motor 7, the power-off motor 7 is fixedly connected in the alarm box 1, the power-off motor 7 is connected with the control processor 61 through an electric wire, a gear 71 is fixedly connected on the output end of the power-off motor 7, a sliding cavity is formed in the alarm box 1, a sealing plate 73 is slidably connected in the sliding cavity, a threaded rod 72 is fixedly connected on one end of the sealing plate 73, a toothed ring 75 is rotatably connected in the alarm box 1, the outer diameter of the toothed ring 75 is meshed with the gear 71, the inner diameter of the toothed ring 75 is connected with the threaded rod 72, an insulating wire 105 is fixedly connected on the sealing plate 73, one end of the insulating wire 105 is fixedly connected with one end of a second metal rod 103, a carbon dioxide fire extinguisher 9 is fixedly connected in the alarm box 1, a worm wheel 91 is fixedly connected on a rotating switch shaft of the fire extinguisher 9, a worm 92, the alarm box 1, a worm 92, the worm 92 is meshed with a worm 92, the worm 92 is fixedly connected with a worm 92, the middle of the worm 92, the worm 93 is meshed fixedly connected with a friction guide wheel 93, the worm 92, and a friction guide wheel 93 is wound on the worm 93, and a friction wheel 93, and a friction guide wheel 93 is wound in the middle of the worm 92;

in the using process of the device, the alarm box 1 can be fixedly arranged at a required position through expansion screws and mounting lugs fixedly connected to four corners of the alarm box 1 and respectively connected to an industrial electric circuit through two industrial electric connecting wires 12, wherein a storage battery 6 arranged on the alarm box 1 is electrically connected with the industrial electric connecting wires 12 and used for charging the storage battery 6, so that the storage battery 6 always has sufficient electric quantity for storage, and the storage battery 6 is internally provided with a rectifier transformer capable of converting alternating current into direct current, so that the storage battery can be electrically connected with the industrial electric connecting wires 12 for charging;

when no load electric equipment is arranged on the line of the industrial electric connection wire 12, the electric current on the industrial electric connection wire 12 is weak, the heating resistor 54 in the temperature control box 5 basically does not generate heat, at the moment, the temperature sensor 51 arranged on the temperature control box 5 transmits a temperature signal to the control processor 61, the control processor 61 controls the first indicator lamp 22 to be communicated with the storage battery 6, so that the first indicator lamp 22 emits green light, and the working personnel can conveniently judge that the storage battery 6 and other related equipment in the alarm box 1 have no fault;

when the wiring equipment loaded on the line of the industrial electric wiring 12 is in the normal rated range of the industrial line, the electric flow on the industrial electric wiring 12 is normal, at the moment, the heating resistor 54 generates certain heat to raise the temperature in the temperature control box 5, at the moment, the temperature sensor 51 arranged on the temperature control box 5 transmits a temperature signal to the control processor 61, the first indicator lamp 22 and the second indicator lamp 22 on the control box door 2 of the control processor 61 form a passage with the storage battery 6, so that green light and yellow light are emitted, and the working personnel can conveniently judge that the industrial circuit load is normal;

when the electric equipment loaded on the line of the industrial electric connection wire 12 exceeds the normal current bearing range of the industrial line, the electric current on the industrial electric connection wire 12 is higher, and similarly, the first indicator lamp 22, the second indicator lamp 22 and the third indicator lamp 22 on the box door 2 can be simultaneously lightened to respectively emit green light, yellow light and blue light, so that a worker can conveniently judge that the industrial circuit is overloaded in a small amplitude, and the electric equipment on the line of the industrial electric connection wire 12 can be controlled, adjusted or checked in time;

when the current amount of the line load on the industrial electric connection wire 12 exceeds the current bearing range of the line, the four indicator lights 22 on the box door 2 are all lighted to give a light warning, and the control processor 61 controls the power-off motor 7 to work, the power-off motor 7 can drive the gear ring 75 to rotate in the alarm box 1 through the gear 71, the inner diameter of the gear ring 75 is in threaded connection with the threaded rod 72, so that the threaded rod 72 and the sealing plate 73 can be driven to slide in the sliding cavity, the second metal rod 103 which is slidably connected in the insulating sleeve 101 is pulled to slide downwards through the insulating wire 105 in the sliding process of the sealing plate 73, and the second metal rod 103 cancels contact with the two metal conductive blocks 5542 which are slidably connected on the insulating connection plate 121 when sliding downwards, so that the line communicated with the industrial electric connection wire 12 can be powered off in time, and the phenomenon that local electric wires are overheated and spontaneous combustion caused by line overload is avoided, and the second metal rod 103 will be against the alarm terminal 102 fixedly connected to the insulating sleeve 101 during the sliding process inside the insulating sleeve 101, so as to connect the circuit electrically connecting the battery 6 and the buzzer alarm 24, so the buzzer alarm 24 can send out a buzzer alarm sound, so that the circuit fault can be timely generated for the working personnel, the sealing plate 73 will seal the air suction pipe 82 during the sliding process, and the exhaust pipe 31 is also provided with the one-way valve 32, so as to prevent the external oxygen from entering the alarm box 1, the synchronous insulating wire 105 pulls the second metal rod 103 to drive the friction guide wheel 93 to rotate during the moving process, the friction guide wheel 93 drives the worm wheel 91 to rotate through the worm 92, the worm wheel 91 rotates to open the sealing valve of the carbon dioxide fire extinguisher 9, so the carbon dioxide fire extinguisher 9 can spray a large amount of carbon dioxide gas into the alarm box 1 through the spray outlet, oxygen in the alarm box 1 can be rapidly discharged and the temperature in the alarm box 1 can be reduced, so that fire disasters in the alarm box 1 can be avoided;

in the using process of the device, the fan 41 can continuously radiate the electronic elements in the alarm box 1 under the driving action of the exhaust motor 4, the outside air can be sucked in through the air suction pipe 82 in the radiating process, the dust in the air can be filtered by the filter box 8 in the process of passing through the filter box 8, the dust is prevented from entering the alarm box 1 to damage the electronic elements, when a fire disaster occurs in the equipment installation environment, smoke generated by the fire disaster is sucked into the alarm box 1 through the air suction pipe 82 and can be monitored by the smoke sensor 83, the smoke sensor 83 can transmit the monitored signals to the control processor 61, the control processor 61 can control the power-off motor 7 to start by a method when the circuit is overloaded, so that the circuit connected with the industrial electric connection wire 12 is powered off, the fire disaster caused by burning to the electrified circuit in the fire disaster to be rapidly diffused, and at the moment, the carbon dioxide extinguisher 9 can protect the electronic elements in the alarm box 1 to a certain degree by filling a large amount of carbon dioxide into the alarm box 1, and the fire disaster is prevented from being diffused into the alarm box 1 to damage the electronic elements.

According to the invention, the temperature sensor 51 fixedly connected to the temperature control box 5 is used for monitoring the temperature in the temperature control box 5 in real time, and signals are transmitted to the control processor 61 to control the four indicator lamps 22, so that a worker can conveniently judge the load condition of an industrial line according to the indicator lamps 22, and when the industrial line is overloaded, the power-off motor 7 can be controlled to cut off the line connected with the industrial electric connection wire 12 and carry out fireproof protection on electronic elements in the alarm box 1, and when a fire disaster occurs in the installation environment of the alarm box 1, the power-off motor 7 can be controlled to work to cut off the power of the industrial line in time, so that the fire disaster is prevented from burning to the electrified line and spreading rapidly.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A circuit alarm device for industrial automation, comprising an alarm box (1) and a box door (2) rotatably connected to the alarm box (1), characterized in that it further comprises:

the temperature control box comprises two industrial electric connection wires (12) connected to the alarm box (1), the two industrial electric connection wires (12) are electrically connected through a temperature control box (5), the temperature control box (5) is connected with one industrial electric connection wire (12) through a connection wire, the connection wire and the industrial electric connection wire (12) are fixedly connected to one end, close to each other, of the connection wire and the industrial electric connection wire (12), a self-telescopic connection terminal is installed on an insulating connection plate (121), and a temperature sensor (51) is fixedly connected to the temperature control box (5);

the alarm box comprises a supporting plate (10) fixedly connected in the alarm box (1), an insulating sleeve (101) is fixedly connected to the supporting plate (10), a second metal rod (103) is connected in the insulating sleeve (101) in a sliding mode, the second metal rod (103) is matched with a self-telescopic wiring terminal on an insulating wiring board (121), a second spring (104) is arranged in the insulating sleeve (101), two ends of the second spring (104) are respectively and fixedly connected with the supporting plate (10) and the second metal rod (103), and two alarm wiring terminals (102) are fixedly connected to the insulating sleeve (101);

the pulling assembly is used for driving the second metal rod (103) to slide in the insulating sleeve (101);

four indicator lamps (22) and a buzzer alarm (24) which are fixedly connected to the box door (2);

fixed connection is in battery (6) and control processor (61) in alarm box (1), battery (6) and pilot lamp (22), control processor (61), buzzer siren (24), temperature sensor (51) electric connection.

2. A circuit alarm device for industrial automation according to claim 1, characterised in that: the self-telescopic wiring end comprises a metal sleeve (5541), the metal sleeve (5541) is fixedly connected to an insulating wiring board (121), the metal sleeve (5541) is electrically connected with a corresponding industrial electric wiring (12), a metal conducting block (5542) is connected to the metal sleeve (5541) in a sliding mode, a first spring (5543) is arranged in the metal sleeve (5541), and two ends of the first spring (5543) are fixedly connected with the insulating wiring board (121) and the metal conducting block (5542) respectively.

3. A circuit alarm device for industrial automation according to claim 2, characterised in that: the four indicating lamps (22) emit green, yellow, blue and red lights from top to bottom in sequence after being powered on.

4. A circuit alarm device for industrial automation according to claim 1, characterised in that: fixedly connected with negative pressure box (3) on alarm box (1), negative pressure box (3) are linked together through gas vent and alarm box (1), the intercommunication has blast pipe (31) on negative pressure box (3), install check valve (32) in blast pipe (31), through support fixedly connected with air exhaust motor (4) in the gas vent, air exhaust motor (4) output extends to fixedly connected with fan (41) in negative pressure box (3).

5. A circuit alarm device for industrial automation according to claim 4, characterised in that: accuse temperature box (5) are upper and lower open-ended form, accuse temperature box (5) upper shed and the corresponding intercommunication of gas vent, fixedly connected with heating resistor (54) in accuse temperature box (5), heating resistor (54) both ends respectively with industrial electricity connection (12) electric connection.

6. A circuit alarm device for industrial automation according to claim 1, characterised in that: the alarm box is characterized in that a filter box (8) is fixedly connected in the alarm box (1), an activated carbon block (81) is fixedly connected in the filter box (8), an air suction pipe (82) is communicated with the bottom of the alarm box (1), the air suction pipe (82) is communicated with the input end of the filter box (8), the output end of the filter box (8) is communicated with the alarm box (1), a smoke sensor (83) is fixedly connected on the air suction pipe (82), and the smoke sensor (83) is electrically connected with the control processor (61).

7. A circuit alarm device for industrial automation according to claim 6, characterised in that: the pulling assembly comprises a power-off motor (7), the power-off motor (7) is fixedly connected in the alarm box (1), the power-off motor (7) is connected with a control processor (61) through a wire, a gear (71) is fixedly connected to the output end of the power-off motor (7), a sliding cavity is formed in the alarm box (1), a sealing plate (73) is slidably connected in the sliding cavity, one end of the sealing plate (73) is fixedly connected with a threaded rod (72), a toothed ring (75) is rotatably connected to the alarm box (1), the outer diameter of the toothed ring (75) is meshed with the gear (71), the inner diameter of the toothed ring (75) is connected with the threaded rod (72) in a threaded mode, an insulating wire (105) is fixedly connected to the sealing plate (73), and one end of the insulating wire (105) is fixedly connected with one end of a second metal rod (103).

8. A circuit alarm device for industrial automation according to any of claim 7, characterised in that: the carbon dioxide fire extinguisher is characterized in that a carbon dioxide fire extinguisher (9) is fixedly connected in the alarm box (1), a worm wheel (91) is fixed on a rotary switch shaft of the carbon dioxide fire extinguisher (9), a worm (92) is connected in the alarm box (1) in a rotary mode, the worm (92) is meshed with the worm wheel (91), a friction guide wheel (93) is fixedly connected on the worm (92), and the middle of the insulating wire (105) is wound on the friction guide wheel (93).