CN114495405A - Fire control detects alarm - Google Patents

Fire control detects alarm Download PDF

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Publication number
CN114495405A
CN114495405A CN202111630610.6A CN202111630610A CN114495405A CN 114495405 A CN114495405 A CN 114495405A CN 202111630610 A CN202111630610 A CN 202111630610A CN 114495405 A CN114495405 A CN 114495405A
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China
Prior art keywords
alarm
storage device
bell
fire
gas
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CN202111630610.6A
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CN114495405B (en
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陈志伟
陈水强
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Guangzhou Hua'an Fire Protection Co ltd
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Guangzhou Hua'an Fire Protection Co ltd
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    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00Fire alarms; Alarms responsive to explosion
    • G08B17/04Hydraulic or pneumatic actuation of the alarm, e.g. by change of fluid pressure
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00Fire alarms; Alarms responsive to explosion
    • G08B17/10Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00Audible signalling systems; Audible personal calling systems
    • G08B3/06Audible signalling systems; Audible personal calling systems using hydraulic transmission; using pneumatic transmission

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fire Alarms (AREA)

Abstract

The invention relates to a fire-fighting detection alarm which comprises a supporting device, a gas storage device, a pneumatic device and a bell device, wherein the gas storage device, the pneumatic device and the bell device are all arranged on the supporting device, liquid nitrogen is stored in the gas storage device, the gas storage device is provided with a gas outlet, a valve switch is arranged in the gas outlet, the valve switch is automatically opened when the environmental temperature of the valve switch reaches a set value, the gas outlet is connected with the pneumatic device, nitrogen is sprayed out from the gas outlet to drive the pneumatic device to move, and the pneumatic device is connected with the bell device and drives the bell device to give out a bell. This application has the effect that improves the fire control and detects the defect that the alarm damaged easily and was burnt out easily by the fire.

Description

Fire control detects alarm
Technical Field
The invention relates to the field of fire-fighting equipment, in particular to a fire-fighting detection alarm.
Background
The fire disaster almost coincides with the utilization of the fire, and as the society develops, the material and the wealth increase, more and more harm is caused. Especially in cities, the fire-fighting and explosion-proof building has the characteristics of dense buildings, concentrated population, concentrated property, more flammable and explosive materials, large quantity of combustible and explosive materials and wide range, thereby bringing more fire and explosion hidden dangers. The fire disaster often happens when people are unaware, and once the fire disaster happens, great loss is caused to property, and even more serious loss is caused to people. It is investigated that 93% of households in the united states have at least one smoke detector, and the number of deaths caused by a residential fire is almost reduced by half while the number of households having smoke detectors increases, so that the installation of smoke detectors is one of the most important means for reducing fire loss and casualties. The smoke alarm can give an alarm when detecting a large amount of smoke, people can timely know the fire through the alarm sound of the fire alarm, so that the fire can be quickly extinguished or escaped from the fire scene, and the loss and the casualty rate caused by the fire are reduced.
At present, the fire control on the market detects the alarm mostly is the alarm that adopts electronics class, though electronics class alarm when the conflagration takes place, the emergence that detects the conflagration that can be quick, but its inside electronic components is more, thereby breaks down easily and loses alarming function, and the fire of conflagration rises the back in addition, can make indoor temperature rise fast, even or can directly burn the alarm to for the alarm damages and loses alarming function.
In view of the above-mentioned related art, the inventor believes that there is a defect that the fire detection alarm is easily damaged and easily burnt by fire.
Disclosure of Invention
In order to improve the fire control and detect the easy defect that damages of alarm and easily burnt out by fire, this application provides a fire control and detects alarm.
The application provides a fire control detection alarm adopts following technical scheme:
the utility model provides a fire control detects alarm, includes strutting arrangement, gas storage device, pneumatic means and jingle bell device all install in strutting arrangement is last, the storage has the liquid nitrogen in the gas storage device, gas storage device is equipped with the gas outlet, install the valve switch in the gas outlet, the ambient temperature of valve switch opens automatically when reaching the setting value, the gas outlet is connected pneumatic means, gas outlet blowout nitrogen gas drives pneumatic means moves, pneumatic means connects jingle bell device drives the jingle bell device sends the ringtone.
By adopting the technical scheme, when a fire disaster occurs, the indoor temperature rises, so that the valve switch is automatically opened, the liquid nitrogen is gasified into nitrogen and is discharged from the gas outlet, the nitrogen enters the pneumatic device, the pneumatic device moves, and then the pneumatic device drives the ringing device to give out a bell to remind people of the occurrence of the fire disaster; the fire control of this application detects alarm adopts mechanical structure to realize sending of alarm, is difficult to break down, long service life to can continuously send the chimes of doom in the conflagration, alarm time's duration is long.
Preferably, the valve switch comprises a sealing plate and a heated expansion piece, the sealing plate is installed in the air outlet and seals the air outlet, the sealing plate is hinged to the air storage device, one end of the sealing plate is connected with a driving plate, the driving plate penetrates out of the air storage device, the heated expansion piece is arranged outside the air storage device and fixed on the supporting device, and one end of the heated expansion piece is connected with one end of the driving plate, which penetrates out of the air storage device, and pushes the driving plate to rotate, so that the sealing plate is rotated to open the air outlet.
By adopting the technical scheme, when a fire disaster occurs, the indoor temperature rises, the thermal expansion piece expands due to heating, the drive plate is pushed to rotate, the drive plate drives the sealing plate to rotate, the air outlet is opened, in addition, the gasification of liquid nitrogen is accelerated along with the continuous rise of the indoor temperature, the pressure of the gasified nitrogen rises, the driving force of the nitrogen on the pneumatic device is increased, the pneumatic device is accelerated to move, the bell device is driven to give out more dense bells, and people are reminded that the fire disaster is increased; in addition, the valve switch is of a pure mechanical structure, does not have electronic components, is not easy to damage in a fire disaster, and can prolong the duration time of the alarm for sending out alarm sound.
Preferably, the heated expansion member comprises a bimetallic strip, one end of the bimetallic strip is fixed on the supporting device, the other end of the bimetallic strip is connected with one end of the driving plate, which penetrates out of the gas storage device, and the bimetallic strip is heated and bent to push the driving plate to rotate so as to open the gas outlet.
Through adopting above-mentioned technical scheme, the thermal expansion coefficient of two sheetmetals of bimetallic strip is different, can produce the bending after being heated to can promote the drive plate and rotate, drive the closing plate and rotate and open the gas outlet.
Preferably, the thermal expansion piece includes the telescopic link, the telescopic link includes slide bar and loop bar, be equipped with the inflation chamber in the loop bar, the inflation chamber is equipped with the opening, the one end of slide bar is passed opening slidable mounting in the inflation intracavity and right the inflation chamber is sealed, the other end of slide bar is articulated the drive plate is worn out the outer one end of gas storage device, the loop bar is kept away from the one end of slide bar articulate in strutting arrangement, the inflation intracavity is installed the sodium bicarbonate solid.
By adopting the technical scheme, when a fire disaster occurs, the indoor temperature rises, the temperature of the loop bar rises, so that the sodium bicarbonate in the expansion cavity is decomposed into sodium carbonate, water and carbon dioxide gas, the air pressure in the expansion cavity rises, the sliding rod is pushed to slide, the telescopic rod stretches and lengthens, the drive plate is pushed to rotate, and the sealing plate is driven to rotate to open the air outlet.
Preferably, the expansion cavity is provided with a material changing port, and the material changing port is provided with a sealing cover.
By adopting the technical scheme, after the sodium bicarbonate in the expansion cavity is decomposed, the decomposed residual substances can be poured out through the material changing port, and then the sodium bicarbonate is added again.
Preferably, the pneumatic device comprises a turbine fixed on the supporting device, an inlet of the turbine is connected with the air outlet, and a rotating shaft of the turbine is connected with the ringing device.
By adopting the technical scheme, the liquid nitrogen is heated and gasified, the nitrogen with certain pressure is sprayed out from the air outlet, and the nitrogen with certain pressure pushes the turbine to rotate, so that the driving of the pneumatic device is realized.
Preferably, the bell device comprises a connecting rod, a cam, a lever and a bell, the connecting rod is rotatably connected with the supporting device, one end of the connecting rod is connected with the pneumatic device, the other end of the connecting rod is fixedly connected with the cam, the middle part of the lever is hinged with the supporting device, a telescopic spring is arranged between the lever and the supporting device, one end of the lever is abutted against the surface of the cam, and the other end of the lever is connected with the bell.
By adopting the technical scheme, the pneumatic device drives the cam to rotate through the connecting rod, the rotation of the cam enables one end of the lever to move up and down, the other end of the lever also correspondingly moves up and down to drive the bell to move up and down, so that the bell rings, and the alarm effect is achieved.
Preferably, the cigarette detection device further comprises a cigarette sensing alarm device, wherein the cigarette sensing alarm device is fixed on the supporting device and arranged on one side of the gas storage device.
Through adopting above-mentioned technical scheme, because pneumatic means and jingle bell device can move after indoor temperature risees to the certain degree, so can not send out the warning when the conflagration just takes place, the warning that sends is late, the sensitive smoke of cooperation is felt alarm device and is used together, can just send the warning when the conflagration just takes place, and the conflagration grow is felt alarm device with the cigarette and is damaged the back, indoor temperature has also made pneumatic means and jingle bell device motion to send the ringtone warning, the emergence of response conflagration that can be quick when the duration of extension warning.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when a fire disaster occurs, the indoor temperature rises, so that the valve switch is automatically opened, the liquid nitrogen is gasified into nitrogen and is discharged from the gas outlet, the nitrogen enters the pneumatic device, the pneumatic device moves, and then the pneumatic device drives the ringing device to give out a bell sound to remind people of the occurrence of the fire disaster; the fire-fighting detection alarm adopts a mechanical structure to realize the sending of the alarm, is not easy to break down, has long service life, can continuously send out the alarm sound in a fire disaster, and has long duration of the alarm time;
2. the valve switch comprises a sealing plate and a heated expansion piece, is of a pure mechanical structure, is not provided with electronic components, is not easy to damage in a fire disaster, and can prolong the duration of the alarm sound;
3. the heated expansion piece comprises a telescopic rod, the telescopic rod comprises a sliding rod and a loop bar, when a fire disaster happens, the indoor temperature rises, the temperature of the loop bar rises, sodium bicarbonate in the expansion cavity is decomposed into sodium carbonate, water and carbon dioxide gas, the air pressure in the expansion cavity rises, the sliding rod is pushed to slide, the telescopic rod stretches and lengthens, the driving plate is pushed to rotate, and the sealing plate is driven to rotate to open the air outlet;
4. the pneumatic device drives the cam to rotate through the connecting rod, one end of the lever moves up and down due to the rotation of the cam, the other end of the lever also moves up and down correspondingly, the bell is driven to move up and down, and the bell can make continuous bell sounds to achieve the alarm effect.
Drawings
Fig. 1 is a schematic structural diagram of a fire detection alarm according to embodiment 1 of the present application.
Fig. 2 is a schematic structural diagram of a fire detection alarm according to embodiment 2 of the present application.
Fig. 3 is a schematic structural view of a telescopic rod according to embodiment 2 of the present application.
Fig. 4 is a schematic structural diagram of a fire detection alarm according to embodiment 3 of the present application.
Fig. 5 is a schematic structural diagram of a fire detection alarm according to embodiment 4 of the present application.
Description of reference numerals: 11. mounting a plate; 21. a gas cylinder; 22. a drive plate; 23. a bimetal; 24. a telescopic rod; 241. a loop bar; 2411. an expansion chamber; 2412. a material changing port; 2413. a sealing cover; 242. a slide bar; 243. sodium bicarbonate solids; 31. a turbine; 41. a connecting rod; 42. a cam; 43. a lever; 44. a bell; 45. a tension spring; 5. smoke alarm device.
Detailed Description
The present application is described in further detail below with reference to figures 1-5.
The embodiment of the application discloses fire control detection alarm.
Example 1
Referring to fig. 1, a fire detection alarm includes strutting arrangement, gas storage device, pneumatic device and jingle bell device, and strutting arrangement is used for fixing the fire detection alarm to indoor wall, and gas storage device, pneumatic device and jingle bell device all install on strutting arrangement, and pneumatic device locates the top of gas storage device, and jingle bell device locates one side of pneumatic device. The liquid nitrogen is stored in the gas storage device, the volume of the nitrogen generated by gasifying the liquid nitrogen into the nitrogen is large, the heat absorbed by the gasified liquid nitrogen is large, the upper part of the gas storage device is provided with a gas outlet, a valve switch is arranged in the gas outlet, and when the indoor temperature rises to the design value of the valve switch, the valve switch is automatically opened. The gas outlet is connected with a pneumatic device, nitrogen sprayed out of the gas outlet drives the pneumatic device to move, and the pneumatic device is connected with the ringing device and drives the ringing device to ring.
The supporting device comprises a mounting plate 11, an air storage frame and a bell frame, the air storage frame, the pneumatic frame and the bell frame are respectively fixed on the mounting plate 11, and the mounting plate 11 is vertically fixed on an indoor wall through screws. The gas storage frame includes the backup pad, grip slipper and clamping piece, and the backup pad level sets up, and the backup pad is fixed in on the mounting bracket and perpendicular with mounting panel 11, and gas storage device's below is located to the backup pad, and gas storage device supports in the backup pad, and the grip slipper is fixed in on the mounting panel 11 and locates one side of gas storage device, and the clamping piece is a slice elastic steel sheet, and the one end of steel sheet is fixed in one side of grip slipper, and the other end of steel sheet passes through the opposite side that the bolt fastening was in the grip slipper, and the clamping piece is fixed in gas storage device on the grip slipper. The belling frame comprises three horizontal plates, the three horizontal plates are divided into two groups, only one group of horizontal plate is arranged above the pneumatic device, one end of the horizontal plate is fixed on the mounting plate 11 and is perpendicular to the mounting plate 11, and the belling device is mounted on the three horizontal plates.
The gas storage device comprises a gas storage bottle 21 and a valve switch, the gas outlet is formed in the upper end of the gas storage bottle 21, the valve switch is installed on the gas storage bottle 21 and seals the gas outlet, a semicircular baffle is arranged in the gas outlet, the baffle is horizontally arranged, and the arc-shaped edge of the baffle is fixed on the side wall of the gas outlet. The valve switch includes the closing plate and receives the thermal expansion piece, and the closing plate is installed in the gas outlet, and the closing plate is a semicircular board, and the closing plate is located the below of baffle and is hugged closely with the baffle, and the projection of closing plate and baffle on the horizontal plane is a circular, and closing plate and baffle seal the gas outlet. The one end of closing plate articulates on the baffle, a drive plate 22 of one end fixedly connected with of the articulated baffle of closing plate, the one end that the closing plate was kept away from to drive plate 22 is worn out outside gas bomb 21, gas bomb 21 is equipped with dodges the mouth of dodging of drive plate 22, one side of drive plate 22 is hugged closely and is dodged the lower lateral wall of dodging the mouth and form sealedly, drive plate 22 can be dodged intraorally and slide, it is equipped with the rubber sleeve to dodge mouthful overcoat, the fixed cover of one end of rubber sleeve establishes drive plate 22, the other end of rubber sleeve is fixed in on the gas bomb 21 of dodging mouthful border, the rubber sleeve can be left the surplus and can stretch out and draw back, the rubber sleeve seals dodging the mouth, avoid nitrogen gas from dodging mouthful leakage. The thermal expansion piece comprises a bimetallic strip 23, one end of the bimetallic strip 23 is fixed on the mounting plate 11, the other end of the bimetallic strip 23 is fixedly connected with one end of the drive plate 22 penetrating out of the gas storage bottle 21, when a fire breaks out, the indoor temperature rises, and the bimetallic strip 23 is heated and bent to push the drive plate 22 to rotate, so that the sealing plate is driven to rotate to open the gas outlet.
The pneumatic device comprises a turbine 31, the turbine 31 is fixed on the mounting plate 11, the inlet of the turbine 31 is connected with the outlet, the outlet of the turbine 31 is arranged on the side of the turbine 31 far away from the bimetallic strip 23, and the rotating shaft of the turbine 31 is connected with a ringing device. The nitrogen sprayed from the air outlet drives the turbine 31 to rotate, and the turbine 31 rotates to drive the ringing device to move, so that the ringing device gives out a bell.
The bell device comprises a connecting rod 41, a cam 42, a lever 43 and a bell 44, wherein the connecting rod 41 is vertically arranged, the connecting rod 41 is rotatably connected with a horizontal plate, the lower end of the connecting rod 41 is fixedly connected with a rotating shaft of the turbine 31, and the upper end of the connecting rod 41 is fixedly connected with the cam 42. The lever 43 is horizontally arranged, the middle part of the lever 43 is hinged on the other two horizontal plates, one end of the lever 43 is abutted against the lower surface of the cam 42, the other end of the lever 43 is hinged with the bell 44, and the bell 44 is arranged below the lever 43. An extension spring 45 is arranged between the lever 43 and the mounting plate 11, two ends of the extension spring 45 are respectively fixedly connected with the lever 43 and the mounting plate 11, and the extension spring 45 enables the lever 43 and the cam 42 to be attached to each other all the time.
The implementation principle of the fire-fighting detection alarm of the embodiment 1 is as follows: when a fire occurs, the indoor temperature rises, because the thermal expansion coefficients of the two metal sheets of the bimetallic sheet 23 are different, the bimetallic sheet 23 is bent after being heated, the drive plate 22 is pushed to rotate, the drive plate 22 drives the sealing plate to rotate to open the air outlet, liquid nitrogen absorbs heat and is gasified into nitrogen gas and is sprayed out of the air outlet, the sprayed nitrogen gas enters from the air inlet of the turbine 31 to drive the turbine 31 to rotate, the rotating shaft of the turbine 31 drives the connecting rod 41 to rotate, the connecting rod 41 drives the cam 42 to rotate, the cam 42 rotates to enable the two ends of the lever 43 to move up and down to drive the bell 44 to move up and down, and meanwhile, the bell 44 swings to give out a ring alarm to remind people of the occurrence of the fire. The fire control of this embodiment detects the alarm and adopts mechanical structure to send the chimes of doom completely, does not have electronic components, is difficult to break down, long service life to also can continuously send the chimes of doom in the big fire, alarm time's duration is long.
Example 2
Referring to fig. 2 and 3, the present embodiment is different from embodiment 1 in that the heated expansion member includes a telescopic bar 24, the telescopic bar 24 is horizontally disposed, and the telescopic bar 24 is perpendicular to the mounting plate 11. The telescopic rod 24 comprises a sliding rod 242 and a loop bar 241, an expansion cavity 2411 is arranged in the loop bar 241, an opening is formed in the expansion cavity 2411, one end of the sliding rod 242 penetrates through the opening to be slidably installed in the expansion cavity 2411 and seal the expansion cavity 2411, the other end of the sliding rod 242 is hinged to one end, penetrating out of the gas storage bottle 21, of the driving plate 22, and one end, far away from the sliding rod 242, of the loop bar 241 is hinged to the supporting device. The expansion cavity 2411 is provided with a material changing port 2412, the material changing port 2412 is provided with a sealing cover 2413, the sealing cover 2413 is firmly arranged on the material changing port 2412 and seals the material changing port 2412, and the expansion cavity 2411 is internally provided with sodium bicarbonate solid 243. Loop bar 241 adopts the copper to make, and the copper has good heat conductivity, can be quick conduct expansion chamber 2411 with indoor temperature variation, and slide bar 242 adopts the bakelite to make, can isolated temperature, avoids liquid nitrogen gasification heat absorption to conduct through drive plate 22 and influences the decomposition of sodium bicarbonate solid 243 in expansion chamber 2411.
The implementation principle of the fire-fighting detection alarm of the embodiment 2 is as follows: in case of fire, as the indoor temperature rises, the temperature of the loop bar 241 rises and the indoor temperature is transmitted into the expansion cavity 2411, the temperature of the expansion cavity 2411 rises to decompose the sodium bicarbonate into sodium carbonate, the carbon dioxide gas raises the air pressure in the expansion cavity 2411, the slide rod 242 is pushed to slide, the telescopic rod 24 is stretched and lengthened, the drive plate 22 is pushed to rotate, the drive plate 22 drives the sealing plate to rotate to open the air outlet, nitrogen gas generated by heat absorption and gasification of liquid nitrogen is sprayed out of the air outlet, the sprayed nitrogen gas enters from the air inlet of the turbine 31 to drive the turbine 31 to rotate, the rotating shaft of the turbine 31 drives the connecting rod 41 to rotate, the connecting rod 41 drives the cam 42 to rotate, the cam 42 rotates to enable the two ends of the lever 43 to move up and down to drive the bell 44 to move up and down, meanwhile, the bell 44 swings, and a ring alarm is given out to remind people of fire. The fire control of this embodiment detects the alarm and adopts mechanical structure to send the chimes of doom completely, does not have electronic components, is difficult to break down, long service life to also can continuously send the chimes of doom in the big fire, alarm time's duration is long.
Example 3
Referring to fig. 4, the present embodiment is different from embodiment 1 in that the present embodiment further includes a smoke detection alarm device 5, and the smoke detection alarm device 5 is a smoke detection alarm device fixed on the mounting plate 11 and disposed on one side of the gas storage device.
The implementation principle of the fire-fighting detection alarm of the embodiment 3 is as follows: because the bimetal 23 can be bent only after the indoor temperature rises to a certain degree, the bell 44 can not give an alarm when a fire happens, the alarm given by the bell 44 is later, the bell is used together with a sensitive smoke alarm, the alarm can be given when the fire happens, and after the smoke alarm is damaged due to the increased fire, the bimetal 23 is bent due to the indoor temperature, and the bell 44 can give a ring alarm.
Example 4
Referring to fig. 5, the present embodiment is different from embodiment 2 in that the present embodiment further includes a smoke detection alarm device 5, the smoke detection alarm device 5 is a smoke detection alarm device, and the smoke detection alarm device is fixed on the mounting plate 11 and is disposed on one side of the gas storage device.
The implementation principle of the fire-fighting detection alarm of the embodiment 4 is as follows: as the sodium bicarbonate can be decomposed after the indoor temperature rises to a certain degree, the bell 44 can not give an alarm when a fire happens, the alarm given by the bell 44 is later, the bell is used together with a sensitive smoke alarm, the alarm can be given when the fire happens, after the smoke alarm is damaged due to the increased fire, the bimetallic strip 23 is bent due to the indoor temperature, and the bell 44 can give a ring alarm.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides a fire control detects alarm which characterized in that: including strutting arrangement, gas storage device, pneumatic means and jingle bell device all install in strutting arrangement is last, the storage has the liquid nitrogen in the gas storage device, the gas storage device is equipped with the gas outlet, install the valve switch in the gas outlet, the ambient temperature of valve switch opens automatically when reaching the setting value, the gas outlet is connected pneumatic means, gas outlet blowout nitrogen gas drives pneumatic means moves, pneumatic means connects the jingle bell device drives the jingle bell device sends the ringtone.
2. A fire detection alarm as claimed in claim 1, wherein: the valve switch comprises a sealing plate and a heated expansion piece, the sealing plate is installed in the air outlet and sealed, the air outlet is sealed, the sealing plate is hinged to the air storage device, one end of the sealing plate is connected with a driving plate (22), the driving plate (22) penetrates out of the air storage device, the heated expansion piece is arranged outside the air storage device and fixed on the supporting device, one end of the heated expansion piece is connected with one end of the driving plate (22), the end of the driving plate (22) penetrates out of the air storage device, and the driving plate (22) is pushed to rotate, so that the sealing plate is rotated to open the air outlet.
3. A fire detection alarm as claimed in claim 2, wherein: the heated expansion piece comprises a bimetallic strip (23), one end of the bimetallic strip (23) is fixed on the supporting device, the other end of the bimetallic strip (23) is connected with one end, penetrating out of the gas storage device, of the driving plate (22), and the bimetallic strip (23) is heated and bent to push the driving plate (22) to rotate so as to open the gas outlet.
4. A fire detection alarm as claimed in claim 2, wherein: the heated expansion piece comprises an expansion rod (24), the expansion rod (24) comprises a sliding rod (242) and a sleeve rod (241), an expansion cavity (2411) is arranged in the sleeve rod (241), an opening is formed in the expansion cavity (2411), one end of the sliding rod (242) penetrates through the opening to be slidably installed in the expansion cavity (2411) and seal the expansion cavity (2411), the other end of the sliding rod (242) is hinged to one end, penetrating out of the gas storage device, of the driving plate (22), one end, far away from the sliding rod (242), of the sleeve rod (241) is hinged to the supporting device, and sodium bicarbonate solid (243) are installed in the expansion cavity (2411).
5. A fire detection alarm as claimed in claim 4, wherein: the expansion cavity (2411) is provided with a material changing port (2412), and the material changing port (2412) is provided with a sealing cover (2413).
6. A fire detection alarm as claimed in claim 1, wherein: the pneumatic device comprises a turbine (31), the turbine (31) is fixed on the supporting device, an inlet of the turbine (31) is connected with the air outlet, and a rotating shaft of the turbine (31) is connected with the ringing device.
7. A fire detection alarm as claimed in claim 1, wherein: the bell device comprises a connecting rod (41), a cam (42), a lever (43) and a bell (44), wherein the connecting rod (41) is rotatably connected with the supporting device, one end of the connecting rod (41) is connected with the pneumatic device, the other end of the connecting rod (41) is fixedly connected with the cam (42), the middle part of the lever (43) is hinged with the supporting device, a telescopic spring (45) is arranged between the lever (43) and the supporting device, one end of the lever (43) is abutted to the surface of the cam (42), and the other end of the lever (43) is connected with the bell (44).
8. A fire detection alarm as claimed in claim 1, wherein: the cigarette detection device is characterized by further comprising a cigarette sensing alarm device (5), wherein the cigarette sensing alarm device (5) is fixed on the supporting device and arranged on one side of the gas storage device.
CN202111630610.6A 2021-12-28 2021-12-28 Fire control detects alarm Active CN114495405B (en)

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