CN214260415U

CN214260415U - Automatic water spraying fire extinguishing system for public building

Info

Publication number: CN214260415U
Application number: CN202023198919.6U
Authority: CN
Inventors: 蒋叶平; 谢秀芳; 程晨
Original assignee: Nanjing Kingdom Architecture Design Co ltd
Current assignee: Nanjing Kingdom Architecture Design Co ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2021-09-24
Anticipated expiration: 2030-12-24

Abstract

The application relates to the field of fire fighting equipment and discloses an automatic water spraying fire extinguishing system for public buildings, which comprises a water inlet pipe, an isolation box, an expansion chamber and a transmission assembly. The lateral wall of the isolation box is provided with a notch, a baffle is arranged in the isolation box, the baffle is in inserting fit with the notch, a slide rail is arranged in the isolation box, and the baffle is in sliding fit with the slide rail. The expansion chamber is internally provided with a piston plate, the piston plate is fixedly connected with a piston rod, and one side of the piston plate, which deviates from the piston rod, is filled with thermal expansion particles. The piston rod penetrates through the expansion chamber and is connected with the partition plate through the transmission assembly. The water inlet pipe penetrates into the isolation box, and a water outlet is formed in the isolation box. During the conflagration, the volume expansion of this application through the thermal energy granule promotes the piston board to drive the baffle through piston rod and drive assembly, can in time turn on the water automatically when the conflagration takes place and put out a fire, expansion chamber and shielded box interval set up, consequently reduced water contact shielded box, caused the possibility of influence to the thermal expansion process of thermal energy granule.

Description

Automatic water spraying fire extinguishing system for public building

Technical Field

The present application relates to the field of fire fighting equipment, and in particular to an automatic sprinkler system for public buildings.

Background

At present, along with the acceleration of urban construction speed, the problem of fire safety is also highlighted gradually. In the initial stage of a fire, the fire is weak because the combustion area is small. The automatic water spraying fire extinguishing system can automatically spray water to a combustion area at the initial stage of a fire, thereby preventing the fire from spreading before a fire fighter arrives at a scene, reducing the hazard of the fire, striving for time for evacuation of fire scene personnel, and effectively reducing the workload of the fire fighter.

Chinese patent publication No. CN2360117 discloses an automatic water spray fire extinguishing apparatus, which includes a towerless pressure tank system, an electric contact pressure gauge for alarm, and a water spray pipe network. The spray pipe network is hung on a ceiling, the electric contact pressure gauge for alarming is installed on a tank body of the towerless pressure tank system, and the towerless pressure tank system is used for supplying water into the spray pipe network. The pipe wall of the water spraying pipe network is provided with a plurality of small holes, the outer part of the water spraying pipe network is fixedly connected with a plastic film, the small holes of the water spraying pipe network are blocked by the plastic film, the plastic film is used for bearing water pressure, and the plastic film is not resistant to high temperature. When a fire disaster happens, the plastic film is heated and melted, and water in the water spraying pipe network is sprayed out through the small holes in the water spraying pipe network, so that the fire extinguishing effect is realized.

In view of the above-mentioned related technologies, the inventor believes that the plastic film directly contacts with water in the spray pipe network, and when a fire breaks out, a part of heat absorbed by the plastic film is carried away by the water, so that the plastic film cannot be rapidly melted, and the possibility of affecting the fire extinguishing efficiency exists.

SUMMERY OF THE UTILITY MODEL

In the related art, the plastic film is directly contacted with water in the water spray pipe network, and when a fire disaster occurs, a part of heat absorbed by the plastic film is carried away by the water, so that the plastic film cannot be rapidly melted, and the possibility of influencing the fire extinguishing efficiency exists. To ameliorate this drawback, the present application provides a sprinkler system for public buildings.

The application provides a pair of automatic sprinkler system for public building adopts following technical scheme to obtain:

an automatic water spraying fire extinguishing system for public buildings comprises an isolation box and an expansion chamber, wherein the isolation box and the expansion chamber are arranged at intervals, a transmission component is arranged between the isolation box and the expansion chamber, the isolation box is arranged towards one side of the expansion chamber, a partition plate is arranged in the isolation box and is in splicing fit with a notch, a slide rail is arranged in the isolation box, the partition plate is in sliding fit with the slide rail, the isolation box is separated by the partition plate, a piston plate is arranged in the expansion chamber, the expansion chamber is separated by the piston plate, an opening end is arranged in the expansion chamber, a piston rod is fixedly connected to one side of the piston plate, which faces towards the opening end of the expansion chamber, the expansion chamber is used for containing thermal expansion particles, the piston rod penetrates through the opening end of the expansion chamber and is connected with the partition plate through the transmission component, and a water inlet pipe is fixedly connected to the isolation box, the one end of inlet tube is worn to establish into the shielded cell, the shielded cell is kept away from the one end of inlet tube and is seted up the outlet.

Through above-mentioned technical scheme, when not taking place the conflagration, inlet tube and fire control facility intercommunication, water flows into the shielded box through the inlet tube to receive blockking of baffle in the shielded box, until being full of the part that is located the baffle top in the shielded box. When a fire occurs, the thermal expansion particles in the expansion chamber are heated, and then the volume of the expansion chamber is rapidly expanded, and the piston plate and the piston rod are pushed. The piston rod drives the partition plate through the connecting assembly, and the partition plate moves along the sliding rail and stretches out of the isolation box, so that the upper part and the lower part of the partition plate are communicated. And then, water above the partition plate continuously flows downwards until the water is discharged from a water outlet of the isolation box, and the fire scene is sprayed and extinguished. Because the isolation box and the expansion chamber are arranged at intervals, the possibility that water in the isolation box is contacted with the expansion chamber is reduced, the probability that the water influences the heating expansion process of the thermal expansion particles is reduced, and the thermal expansion particles can expand in time when a fire disaster happens.

Preferably: the transmission assembly comprises a duplicate gear, the duplicate gear comprises a first gear and a second gear, the first gear and the second gear are both rotatably connected with the outer side wall of the isolation box, a first rack is fixedly connected with one end, far away from the piston plate, of the piston rod, a second rack is fixedly connected with one side, close to the expansion chamber, of the partition plate, the first rack is meshed with the first gear, the second rack is meshed with the second gear, and the diameter of the second gear is larger than that of the first gear.

Through the technical scheme, during operation, the piston rod pushes the first rack, the first rack drives the first gear and the second gear, the second gear drives the partition board through the second rack, and the partition board moves along the sliding rail towards the direction away from the isolation box. Because the diameter of second gear is greater than the diameter of first gear, consequently when first gear and second gear pivoted angle are the same, the distance that the second rack removed is greater than the distance that first rack removed to accelerate the speed that the baffle removed, improved the efficiency when the water spray is put out a fire.

Preferably: one end of the partition board far away from the second rack is fixedly connected with a barrier strip.

Through above-mentioned technical scheme, when the conflagration breaing out, the baffle moves outside the shielded box, conflicts to the inner wall of blend stop and shielded box, and the blend stop carries on spacingly to the baffle to outside having reduced the baffle and having removed the shielded box completely, having made water flow from the notch department of shielded box, the water pressure of the drain outlet department that leads to the shielded box descends, causes the possibility of influence to fire extinguishing efficiency.

Preferably: the blend stop is the blend stop made of ferromagnetic material, fixedly connected with magnetism strip on the inside wall of shielded cell, magnetism strip and blend stop actuation.

Through above-mentioned technical scheme, when not having a fire, blend stop and magnetism strip actuation, magnetism strip carries on spacingly through the blend stop to the baffle to reduced and made the baffle take place to remove because of external mistake touches, emitted water from the outlet of shielded cell, caused the possibility of water waste.

Preferably: one side of the magnetic strip close to the barrier strip is fixedly connected with an elastic gasket.

Through above-mentioned technical scheme, when magnetism strip and blend stop actuation, the elastic gasket changes the shape under the pressure effect to plug up the gap between magnetism strip and the blend stop, thereby reduced water and flowed through from the gap between magnetism strip and the blend stop, caused the possibility of water waste.

Preferably: the side wall of the expansion chamber is provided with a vent hole, the vent hole of the expansion chamber is fixedly connected with a cover net, the cover net covers the vent hole of the expansion chamber, and the aperture of meshes of the cover net is smaller than the diameter of thermal expansion particles.

Through the technical scheme, the thermal expansion particles are processed from expanded graphite. The expanded graphite has good adsorbability, when a fire disaster occurs, smoke on the fire scene penetrates through the cover net and contacts with the thermal expansion particles, and the thermal expansion particles made of the expanded graphite have adsorbability and can absorb a part of smoke, so that the possibility of suffocation of people caused by overlarge smoke concentration on the fire scene is reduced.

Preferably: the water inlet pipe is provided with a booster pump.

Through above-mentioned technical scheme, when the scene of fire was located high-rise building, the booster pump can increase the water pressure of inlet tube department to reduce because of high-rise fire control water supply facility water pressure is not enough, rivers undersize, and cause the possibility of influence to fire extinguishing efficiency.

Preferably: the notch department of shielded cell is along internal perisporium fixedly connected with waterproof gasket, waterproof gasket and baffle laminating.

Through above-mentioned technical scheme, waterproof gasket blocks up the gap between baffle and the shielded cell, has reduced the notch department leakage of water from the shielded cell, causes the possibility of water waste.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the isolation box and the expansion chamber are arranged at intervals, when a fire disaster happens, the thermal expansion material pushes the piston rod, and the piston rod moves the partition plate through the transmission assembly to discharge water. Because the expansion chamber and the isolation box are arranged at intervals, the possibility that the expansion chamber is directly contacted with water in the isolation box is reduced, and the probability that the temperature reduction effect of the water affects the heating process of the thermal expansion particles is reduced;

2. the thermal expansion particles are made of expanded graphite, and the cover net is arranged on the expansion chamber, so that the thermal expansion particles can absorb a part of smoke in a fire, and the possibility of suffocation of people due to overhigh smoke concentration in the fire scene is reduced.

Drawings

Fig. 1 is a schematic view showing the overall construction of an automatic sprinkler system for public buildings according to an embodiment of the present application.

Fig. 2 is a schematic view of the internal structure of the sprinkler system for public buildings according to the embodiment of the present application.

Fig. 3 is an enlarged view of a portion a in fig. 2.

Fig. 4 is an enlarged view of a portion B in fig. 3.

Reference numerals: 1. an isolation box; 2. an expansion chamber; 3. a piston plate; 4. a piston rod; 5. a cover net; 6. a vent; 7. a slide rail; 8. a partition plate; 9. a transmission assembly; 91. a duplicate gear; 911. a first gear; 912. a second gear; 92. a first rack; 93. a second rack; 10. a water inlet pipe; 11. a booster pump; 12. a spray head; 13. blocking strips; 14. a magnetic strip; 15. an elastic pad; 16. a waterproof gasket; 17. a notch; 18. an open end; 19. and a water outlet.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses an automatic water spraying fire extinguishing system for public buildings. Referring to fig. 1, the automatic sprinkler system for public buildings includes an insulation box 1 and an expansion chamber 2. Isolation box 1 and expansion chamber 2 are all fixed connection on the wall body, and isolation box 1 and expansion chamber 2 interval set up. One side of the expansion chamber 2 facing the isolation box 1 is provided with an opening end 18, a piston plate 3 is arranged in the expansion chamber 2, and the piston plate 3 separates the expansion chamber 2 and is matched with the inner wall of the expansion chamber 2 in a sliding mode. A piston rod 4 is fixedly connected to the piston plate 3, the piston rod 4 extending out of the open end 18 of the expansion chamber 2. The expansion chamber 2 is filled with thermal expansion particles made of expanded graphite, and the piston plate 3 is filled with the thermal expansion particles on the side away from the piston rod 4. The side wall of the expansion chamber 2 is provided with a vent 6, the vent 6 of the expansion chamber 2 is fixedly connected with a cover net 5, the vent 6 of the expansion chamber 2 is covered by the cover net 5, the expansion chamber 2 and the cover net 5 are both made of copper, and the aperture of the cover net 5 is smaller than the diameter of the thermal expansion particles.

Referring to fig. 2, notch 17 has been seted up towards one side of expansion chamber 2 to isolation box 1, and the shape of notch 17 is the rectangle, two slide rails 7 of fixedly connected with in isolation box 1, and two equal slide rails 7 of slide rail 7 set up along the length direction of isolation box 1, and two slide rails 7 set up along the width direction interval of isolation box 1. Be equipped with baffle 8 in the shielded box 1, baffle 8 along length direction and the cooperation of pegging graft of the notch 17 of shielded box 1, baffle 8 along width direction's both sides respectively with two slide rail 7 cooperation of sliding. The partition plate 8 is arranged along the horizontal direction and used for sealing the isolation box 1, and a transmission assembly 9 is arranged between the partition plate 8 and the piston rod 4. 1 top fixedly connected with inlet tube 10 of shielded box, the roof of shielded box 1 is worn to establish by the one end of inlet tube 10, and the one end that the inlet tube 10 kept away from shielded box 1 is equipped with booster pump 11, and booster pump 11 communicates with the fire control water supply facility in the building. A water outlet 19 is arranged at one end of the isolation box 1 far away from the water inlet pipe 10, and a spray head 12 is welded at the water outlet 19 of the isolation box 1.

Referring to fig. 1 and 2, before a fire occurs, a fire protection water supply facility delivers water into a separation tank 1 through a booster pump 11 and a water inlet pipe 10, and the booster pump 11 increases water pressure, thereby reducing the possibility of water pressure shortage due to an excessively high floor at a fire site, which affects water supply efficiency. After entering the isolation box 1, the water is blocked by the partition plate 8 and is collected above the partition plate 8. In the event of a fire, the temperature within the building rises and the heat expandable particles within the expansion chamber 2 are heated and expand. Since the heat expandable particles are made of expanded graphite, which expands more than 150 times in volume when exposed to heat, the heat expandable particles will push the piston plate 3 and the piston rod 4 quickly after a fire has occurred. The expansion chamber 2 and the cover mesh 5 made of copper have good thermal conductivity, and can increase the heat absorption efficiency of the thermally expandable particles. Because the expanded graphite has good adsorbability, smoke in a fire scene is absorbed by the thermal expansion particles after entering the expansion chamber 2 through the cover net 5, and the possibility of suffocation of personnel in the fire scene due to smoke suction is reduced. When the piston rod 4 moves, the transmission assembly 9 drives the partition plate 8, so that the partition plate 8 moves towards the direction far away from the isolation box 1 along the slide rail 7, the isolation box 1 is not blocked, and water above the partition plate 8 flows to the lower part of the partition plate 8 and is sprayed to a fire scene through the spray head 12. Since the expansion chamber 2 is spaced apart from the insulation box 1, the possibility of the expansion chamber 2 coming into direct contact with water is reduced, thereby reducing the possibility of the influence on the fire extinguishing efficiency.

Referring to fig. 2 and 3, the transmission assembly 9 includes a dual gear 91, the dual gear 91 includes a first gear 911 and a second gear 912, and the first gear 911 and the second gear 912 are both rotatably connected to the outer side wall of the isolation box 1. One end of the piston rod 4, which is far away from the piston plate 3, is welded with a first rack 92, one side of the partition plate 8, which is close to the expansion chamber 2, is fixedly connected with a second rack 93, the first rack 92 is meshed with a first gear 911, the second rack 93 is meshed with a second gear 912, and the diameter of the first gear 911 is smaller than that of the second gear 912. During operation, the piston rod 4 is brought to the first rack 92, the first rack 92 is brought to the first gear 911 and the second gear 912, the first gear 911 and the second gear 912 rotate coaxially, and the second gear 912 drives the partition plate 8 through the second rack 93 to move the partition plate 8 and remove the blocking of the isolation box 1. When the first gear 911 and the second gear 912 rotate at the same angle, the moving distance of the tail end of the second gear 912 is longer, so that the moving speed of the second rack 93 is greater than that of the first rack 92, the moving speed of the partition plate 8 is increased, and the water discharging efficiency of the isolation box 1 is improved.

Referring to fig. 2 and 4, a barrier strip 13 is fixedly connected to an end of the partition plate 8 away from the second rack 93, the barrier strip 13 is perpendicular to the partition plate 8, and the partition plate 8 is made of a ferromagnetic material, which may be cast iron. Fixedly connected with magnetism strip 14 on the inner wall of shielded box 1, the laminating of magnetism strip 14 and shielded box 1's inner wall, magnetism strip 14 locate shielded box 1 keep away from on the inner wall of notch 17 one side, and the shape and the size of magnetism strip 14 all are the same with blend stop 13. An elastic gasket 15 is fixedly connected to one side of the magnetic strip 14 facing the barrier strip 13, and the elastic gasket 15 is made of rubber. A waterproof gasket 16 is bonded at the notch 17 of the isolation box 1 along the inner periphery, and the waterproof gasket 16 is attached to the partition plate 8.

Referring to fig. 2 and 4, before a fire disaster occurs, the barrier strips 13 attract the magnetic strips 14, the magnetic strips 14 limit the partition plates 8 through the barrier strips 13, and the possibility of water resource waste caused by the fact that the partition plates 8 move due to external accidental touch and water flows out of the isolation box 1 is reduced. The elastic gasket 15 deforms under the action of magnetic force between the barrier strips 13 and the magnetic strips 14 and abuts against the barrier strips 13 tightly by means of elastic force, so that gaps between the barrier strips 13 and the magnetic strips 14 are blocked, and the waterproof gasket 16 blocks gaps between the partition plate 8 and the notch 17 of the isolation box 1, so that the possibility of water resource waste caused by water flowing out of the isolation box 1 through the gaps is reduced. In case of fire, the second rack 93 drives the partition plate 8 to move until the baffle plate abuts against the inner side wall of the isolation box 1. At this moment, the baffle carries on spacingly to baffle 8, and it is out from notch 17 to have reduced baffle 8 and removed the time water completely outside isolation box 1, leads to the water pressure of shower nozzle 12 department not enough, causes the possibility of influence to the normal work of shower nozzle 12.

The implementation principle of the automatic water spraying fire extinguishing system for the public building is as follows: in the event of a fire, the temperature in the building rises and the heat expandable particles heat and expand. The thermal expansion particles push the piston plate 3 and the piston rod 4, the piston rod 4 drives the partition plate 8 through the transmission assembly 9, and the partition plate 8 moves along the sliding rail 7 and separates the isolation box 1. At this time, water in the fire-fighting water supply facility is pressurized by the booster pump 11, flows into the isolation box 1 through the water inlet pipe 10, and is sprayed to the fire scene from the spray head 12, so that the fire scene is extinguished. A portion of the smoke generated at the fire site is absorbed by the heat expandable particles, thereby reducing the likelihood of suffocation of the site personnel in the smoke.

The present embodiment is only for explaining the present application, and it is not limited to the present application, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present application.

Claims

1. An automatic sprinkler system for public buildings, characterized in that: comprises an isolation box (1) and an expansion chamber (2), wherein the isolation box (1) and the expansion chamber (2) are arranged at intervals, a transmission component (9) is arranged between the isolation box (1) and the expansion chamber (2), a notch (17) is formed in one side, facing the expansion chamber (2), of the isolation box (1), a partition plate (8) is arranged in the isolation box (1), the partition plate (8) is in plug-in fit with the notch (17), a slide rail (7) is arranged in the isolation box (1), the partition plate (8) is in sliding fit with the slide rail (7), the isolation box (1) is separated by the partition plate (8), a piston plate (3) is arranged in the expansion chamber (2), the expansion chamber (2) is separated by the piston plate (3), an opening end (18) is formed in the expansion chamber (2), a piston rod (4) is fixedly connected to one side, facing the opening end (18) of the expansion chamber (2), of the piston plate (3), expansion chamber (2) are used for holding the thermal energy granule, open end (18) of expansion chamber (2) are worn to establish by piston rod (4), and pass through drive assembly (9) are connected with baffle (8), fixedly connected with inlet tube (10) on isolation box (1), isolation box (1) is worn to establish into by the one end of inlet tube (10), outlet (19) have been seted up to the one end that inlet tube (10) were kept away from in isolation box (1).

2. An automatic sprinkler system for public buildings according to claim 1, characterized in that: the transmission assembly (9) includes duplicate gear (91), duplicate gear (91) includes first gear (911) and second gear (912), first gear (911) and second gear (912) all rotate with the lateral wall of isolation box (1) and are connected, the first rack (92) of one end fixedly connected with that piston plate (3) were kept away from in piston rod (4), one side fixedly connected with second rack (93) that baffle (8) are close to expansion chamber (2), first rack (92) and first gear (911) meshing, second rack (93) and second gear (912) meshing, the diameter of second gear (912) is greater than the diameter of first gear (911).

3. A sprinkler system for public buildings according to claim 2, characterized in that: one end of the partition plate (8) far away from the second rack (93) is fixedly connected with a barrier strip (13).

4. A sprinkler system for public buildings according to claim 3, characterized in that: the blend stop (13) is the blend stop made of ferromagnetic material, fixedly connected with magnetism strip (14) on the inside wall of shielded cell (1), magnetism strip (14) and blend stop (13) actuation.

5. An automatic sprinkler system for public buildings according to claim 4, characterized in that: one side of the magnetic strip (14) close to the barrier strip (13) is fixedly connected with an elastic gasket (15).

6. An automatic sprinkler system for public buildings according to claim 1, characterized in that: the side wall of the expansion chamber (2) is provided with a vent (6), the vent (6) of the expansion chamber (2) is fixedly connected with a cover net (5), the vent (6) of the expansion chamber (2) is covered by the cover net (5), and the aperture of a mesh of the cover net (5) is smaller than the diameter of thermal expansion particles.

7. An automatic sprinkler system for public buildings according to claim 1, characterized in that: the water inlet pipe (10) is provided with a booster pump (11).

8. An automatic sprinkler system for public buildings according to claim 1, characterized in that: notch (17) department of shielded cell (1) is along interior peripheral fixedly connected with waterproof gasket (16), waterproof gasket (16) and baffle (8) laminating.