CN112843568A - Fire-fighting spraying system - Google Patents
Fire-fighting spraying system Download PDFInfo
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- CN112843568A CN112843568A CN202110125671.0A CN202110125671A CN112843568A CN 112843568 A CN112843568 A CN 112843568A CN 202110125671 A CN202110125671 A CN 202110125671A CN 112843568 A CN112843568 A CN 112843568A
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- fire
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C31/00—Delivery of fire-extinguishing material
- A62C31/02—Nozzles specially adapted for fire-extinguishing
- A62C31/05—Nozzles specially adapted for fire-extinguishing with two or more outlets
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/08—Control of fire-fighting equipment comprising an outlet device containing a sensor, or itself being the sensor, i.e. self-contained sprinklers
- A62C37/10—Releasing means, e.g. electrically released
- A62C37/11—Releasing means, e.g. electrically released heat-sensitive
- A62C37/16—Releasing means, e.g. electrically released heat-sensitive with thermally-expansible links
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The application discloses a fire-fighting spray system, which is applied to the field of fire-fighting devices, and the key points of the technical scheme are that the fire-fighting spray system comprises a temperature control switch, wherein the temperature control switch comprises a switch pipe with a closed upper end, the middle positions of two sides of the switch pipe are respectively and vertically communicated with a water service pipe, the tail end of the water service pipe is communicated with the spray pipe, the inner diameter of the switch pipe is larger than that of the water service pipe, the lower end of the switch pipe is communicated with a control cylinder, a temperature memory alloy column is arranged in the control cylinder, the upper end of the temperature memory alloy column is connected with a plug attached to the inner cavity of the switch pipe, a limiting ring is arranged on the temperature memory alloy column, a limiting spring is arranged in the control cylinder, the upper end of the limiting spring is contacted with the bottom end of the; the fire extinguishing device has the technical effects that the spray head is closed in time after the fire is extinguished, and the indoor environment is prevented from being damaged by flood after the fire.
Description
Technical Field
The application relates to the technical field of fire fighting devices, in particular to a fire-fighting spraying system.
Background
The fire-fighting spraying system is a fire-fighting device, is a fixed fire-fighting facility with wide application, and has the characteristics of low price, high fire-fighting efficiency and the like. The device can be divided into two forms of manual control and automatic control according to different functions. The system is provided with the alarm device, can automatically send out an alarm when a fire disaster occurs, and the automatically controlled fire-fighting spraying system can automatically spray and work in linkage with other fire-fighting facilities, so that the initial fire disaster can be effectively controlled and extinguished.
The existing common fire-fighting spray system usually adopts a drooping type spray head with a glass pipe, and when the temperature is generally raised to 68 ℃, the glass pipe of the drooping type spray head bursts to spray the area below the drooping type spray head, so that the fire-fighting and fire-extinguishing functions are achieved.
In view of the above-mentioned related technologies, the inventor believes that there is a defect that a drooping type sprinkler cannot be restored after a glass tube bursts, and can only be manually closed after a fire extinguishes, and it is difficult to close the sprinkler in time after the fire extinguishes, and it is easy to cause a flood hazard in a room after the fire.
Disclosure of Invention
In order to make the shower nozzle in time close after the conflagration extinguishes, prevent to make indoor receive the defect of flood hazard again after the conflagration, this application provides a fire control spraying system.
The application provides a fire sprinkler system adopts following technical scheme: a fire-fighting spray system comprises a fire-fighting pool arranged outside a building, wherein a water distribution main pipe is communicated with the bottom end of the fire-fighting pool, a water pump is arranged on the water distribution main pipe, the water distribution main pipe is communicated with a plurality of water distribution branch pipes, the water distribution branch pipes are communicated with a plurality of spray pipes, a temperature control switch is arranged on each spray pipe, a water flow switch is communicated with the tail end of each spray pipe, a normally-open spray head is communicated with the tail end of each water flow switch, a PLC control box is arranged on one side of the fire-fighting pool, and the water flow switches and the water pump are electrically connected with the PLC control box;
the temperature control switch comprises a switch tube with a sealed upper end, the middle positions of two sides of the switch tube are respectively and vertically communicated with a water service tube, the tail end of the water service tube is communicated with a spray pipe, the inner diameter of the switch tube is larger than that of the water service tube, the lower end of the switch tube is communicated with a control barrel, a temperature memory alloy column is arranged in the control barrel, the upper end of the temperature memory alloy column is connected with a plug attached to the inner cavity of the switch tube, a limiting ring is arranged on the temperature memory alloy column, a limiting spring is arranged in the control barrel, the upper end of the limiting spring is in contact with the bottom end of the limiting ring, and a through hole for the temperature memory alloy column to pass through is formed in the bottom end of the control.
Through the technical scheme, when a fire disaster occurs, the bottom end of the temperature memory alloy column in the temperature control switch is heated to expand, so that the temperature control switch is opened, water of the water distribution branch pipe can be sprayed out through the normally-open spray header to extinguish the fire, after the fire disaster is finished, the temperature memory alloy column can recover to the original state at normal temperature, so that the temperature control switch is closed, the normally-open spray header does not spray water indoors any more, the normally-open spray header is timely closed after the fire disaster is extinguished, and the indoor water disaster hazard after the fire disaster is prevented.
The application is further configured to: the building is characterized in that a fire water tank is arranged on the roof of the building, the lower end of the fire water tank is communicated with a water pre-pipe, and the tail end of the water pre-pipe is communicated with a water distribution main pipe.
Through the technical scheme, water is injected into the fire fighting branch pipe in advance through the fire fighting water tank, so that the spray header is opened frequently to spray water in time when a fire disaster occurs, and the timeliness of extinguishing fire by the normally-opened spray header is improved.
The application is further configured to: and a check valve is arranged on the water distribution main pipe at the bottom end of the fire pool.
Through above-mentioned technical scheme, prevent through the check valve that water in the fire water tank from flowing into the fire-fighting water pond through the water distribution main pipe, can guarantee to inject water in advance in the fire branch pipe.
The application is further configured to: be provided with water level monitoring device in the fire-fighting water pond, the fire-fighting water pond intercommunication has the moisturizing pipe, the end and the urban water supply system intercommunication of moisturizing pipe, be provided with electric control switch on the moisturizing pipe, water level monitoring device and electric control switch and PLC control box electric property link to each other.
Through above-mentioned technical scheme, when the water level in the fire pond was crossed low, PLC control box signal can be given to level sensor, PLC control box can control electric control switch and open, make urban water supply system supply water to the fire pond through the moisturizing pipe, water level restoration in the fire pond, PLC control box signal can be given to level sensor, PLC control box can control electric control switch and close, guarantee that the fire-fighting water in the fire pond is sufficient, make normally open the shower head and can continuously spray water.
The application is further configured to: an alarm is arranged on one side of the normally-open spray header, a heat insulation box is arranged on the outer side of the alarm, and the alarm is electrically connected with the PLC control box.
Through above-mentioned technical scheme, the heat-insulating box can prevent to report to the police and be heated the damage, and when PLC control box received water flow switch's signal, PLC control box can control the alarm and send out the police dispatch newspaper, reminds the personnel in scene of fire to withdraw in time.
The application is further configured to: the lower extreme of normally opening the shower head is provided with the dispersion and sprays the piece, the terminal cover of normally opening the shower head has put the atomizing net.
Through above-mentioned technical scheme, normally open shower head spun water meets the dispersion and sprays the piece and take place to splash, enlarges the water spray area of normally opening the shower head, and the water droplet that splashes can take place to atomize when meeting atomizing net to it is more even to the scene of fire water spray.
The application is further configured to: the lower end of the temperature memory alloy column is connected with a limiting piece, a strong positioning spring is arranged on the limiting piece, and the upper end of the strong positioning spring is in contact with the outer wall of the bottom end of the control cylinder.
Through above-mentioned technical scheme, strong positioning spring can play certain strong limiting displacement to temperature memory alloy, prevents to cross when low excessively at room temperature, and the temperature memory alloy post excessively contracts to the control cylinder in to guarantee the closed effect of jam, avoid normally opening the shower head and take place the hourglass at ordinary times.
The application is further configured to: the water distribution main pipe is communicated with a fire-fighting water supply pipe, the tail end of the fire-fighting water supply pipe is communicated with a fire hydrant, and a fire valve is arranged on the fire-fighting water supply pipe.
Through the technical scheme, when a fire disaster occurs, water supply to the fire hydrant is guaranteed, so that normal use of the fire hydrant is guaranteed, and fire fighters can normally use the fire hydrant to extinguish fire.
The application is further configured to: the control cylinder is detachably connected with the switch tube, and the temperature memory alloy column is detachably connected with the plug.
Through above-mentioned technical scheme, the control cylinder can be dismantled, dismantles the change to the jam, prevents to block up ageing influence confined effect, guarantees temperature control switch's normal use.
The application is further configured to: the water distribution main pipe is connected with a tail end water testing pipe, and a water testing valve is arranged on the tail end water testing pipe.
Through the technical scheme, whether fire-fighting water is used in the water distribution branch pipe or not can be detected by opening the water test valve at ordinary times, and the fire-fighting spraying system is convenient to use.
To sum up, the beneficial technical effect of this application does:
1. the normally open spray header is automatically closed in time after the fire is extinguished, so that the indoor environment is prevented from being damaged by flood after the fire;
2. the water is supplied to the fire pool in real time, so that sufficient fire-fighting water in the fire pool is ensured, and the normally-open spray head can continuously spray water;
3. the strong positioning spring can play a certain strong limiting role on the temperature memory alloy, and prevents the excessive shrinkage of the temperature memory alloy column in the control cylinder when the room temperature is too low, thereby ensuring the blocking sealing effect.
Drawings
Fig. 1 is an overall configuration diagram of the present embodiment;
fig. 2 is an enlarged view at a of fig. 1 of the present embodiment;
FIG. 3 is a cross-sectional view of the fire hose of the present embodiment;
FIG. 4 is a schematic structural view of the alarm of the present embodiment;
FIG. 5 is an exploded view of the temperature control switch of the present embodiment;
fig. 6 is a sectional view of the normally open shower head of the present embodiment.
Description of the drawings, 1, a fire pool; 2. a water distribution main pipe; 3. a water pump; 4. a water distribution branch pipe; 5. a shower pipe; 6. a temperature control switch; 7. a water flow switch; 8. a normally open spray header; 9. a PLC control box; 10. a switching tube; 11. a water pipe; 12. a control cylinder; 13. a temperature memory alloy pillar; 14. blocking; 15. a limiting spring; 16. a limiting ring; 17. a limiting sheet; 18. a strong positioning spring; 19. a fire water tank; 20. pre-water pipe; 21. a check valve; 22. a water level sensor; 23. a water replenishing pipe; 24. an electric control switch; 25. an alarm; 26. a heat insulation box; 27. dispersing spray sheets; 28. an atomizing screen; 29. a fire service water supply pipe; 30. a fire hydrant; 31. a fire valve; 32. a tail end water test pipe; 33. and (4) a water testing valve.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Example (b):
referring to fig. 1 and 2, for the fire sprinkler system disclosed in the present application, the fire sprinkler system comprises a fire pool 1 arranged outside a building and a fire water tank 19 arranged on a building balcony, and fire water to be used for extinguishing fire is filled in both the fire pool 1 and the fire water tank 19. The lower end of the fire water tank 19 is communicated with a pre-water pipe 20, the tail end of the pre-water pipe 20 is communicated with a water distribution main pipe 2, the water distribution main pipe 2 is communicated with a plurality of water distribution branch pipes 4, and the water distribution branch pipes 4 are arranged on a ceiling of a building interlayer. The fire-fighting water in the fire-fighting water tank 19 flows into the water distribution main pipe 2 through the water pre-supply pipe 20 and then flows into each water distribution branch pipe 4 through the water pre-supply pipe, so that the water distribution branch pipes 4 are filled with the fire-fighting water before a fire occurs. The water distribution branch pipe 4 is communicated with a plurality of spray pipes 5, the spray pipes 5 are communicated with a temperature control switch 6, and when a fire disaster occurs indoors, the temperature control switch 6 is opened when the temperature is too high, so that water in the water distribution branch pipe 4 flows through the spray pipes 5. The tail end of the spray pipe 5 is communicated with a water flow switch 7, the tail end of the water flow switch 7 is communicated with a normally open spray head 8, the normally open spray head 8 extends out of a ceiling and faces indoors, and fire-fighting water is sprayed indoors through the normally open spray head 8. The water distribution main pipe 2 is connected with a tail end water testing pipe 32, a water testing valve 33 is arranged on the tail end water testing pipe 32, and whether fire-fighting water exists in the water distribution branch pipe 4 or not can be detected by opening the water testing valve 33 at ordinary times.
Refer to fig. 1 and picture, 2, the bottom and the water distribution main pipe 2 intercommunication of fire pond 1, be provided with water pump 3 on the water distribution main pipe 2, 1 one side in fire pond is provided with PLC control box 9, water switch 7 and water pump 3 and PLC control box 9 electric connection, the fire-fighting water in fire water tank 19 is when water switch 7, PLC control box 9 signal can be given to water switch 7, PLC control box 9 can control water pump 3 work, with the water suction in the fire pond 1 to the water distribution main pipe 2 in, thereby supply water to normally open shower head 8, guarantee that normally open shower head 8 can last the water spray and put out a fire. The check valve 21 is arranged on the water distribution main pipe 2 at the bottom end of the fire pool 1, so that water in the fire water tank 19 is prevented from flowing into the fire pool 1 through the water distribution main pipe 2, water cannot be injected into the fire branch pipe in advance, and the spray head 8 is often opened to spray water in time when a fire disaster occurs.
Referring to fig. 1 and 3, a water level monitoring device is disposed in the fire pool 1, and the water level monitoring device is set as a water level sensor 22, so that the water level in the fire pool 1 can be monitored by the water level sensor 22, and the fire-fighting water in the fire pool 1 is ensured to be sufficient. 1 intercommunication in fire-fighting water pond has moisturizing pipe 23, the end and the urban water supply system intercommunication of moisturizing pipe 23, be provided with electric control switch 24 on the moisturizing pipe 23, water level monitoring device and electric control switch 24 link to each other with 9 electrical property of PLC control box, when the water level in fire-fighting water pond 1 crosses lowly, PLC control box 9 signal can be given to water level sensor 22, PLC control box 9 can control electric control switch 24 and open, make urban water supply system supply water to fire-fighting water pond 1 through moisturizing pipe 23, until the water level recovery in fire-fighting water pond 1, PLC control box 9 signal can be given to water level sensor 22, PLC control box 9 can control electric control switch 24 and close.
Referring to fig. 1 and 4, an alarm 25 is arranged on one side of the normally-open spray header 8, a heat insulation box 26 is arranged on the outer side of the alarm 25 to prevent the alarm from being damaged by heating, the alarm 25 is electrically connected with the PLC control box 9, and when the PLC control box 9 receives a signal of the water flow switch 7, the PLC control box 9 controls the alarm 25 to give an alarm to remind people on the fire scene of evacuation in time. The main water distribution pipe 2 is communicated with a fire-fighting water supply pipe 29, the tail end of the fire-fighting water supply pipe 29 is communicated with a fire hydrant 30, and the fire-fighting water supply pipe 29 is provided with a fire valve 31, so that the fire hydrant 30 can be normally used when a fire disaster happens.
Referring to fig. 2 and 5, the temperature control switch 6 includes a switch tube 10 with a closed upper end, a switch cavity is provided in the switch tube 10, water service pipes 11 are vertically communicated with the middle positions of both sides of the switch tube 10, and the ends of both water service pipes 11 are communicated with the shower pipe 5. The inner diameter of the switch tube 10 is larger than that of the water passing tube 11, the lower end of the switch tube 10 is communicated with a control cylinder 12, a temperature memory alloy column 13 is arranged in the control cylinder 12, the temperature memory alloy column 13 expands when heated, and the temperature memory alloy column 13 restores to the original shape when the temperature returns to the normal temperature. The upper end of the temperature memory alloy column 13 is connected with a plug 14, the outer wall of the plug 14 is just attached to the switch cavity, a limiting ring 16 is arranged on the temperature memory alloy column 13, a limiting spring 15 is arranged in the control cylinder 12, the upper end of the limiting spring 15 is in contact with the bottom end of the limiting ring 16, the plug 14 is just located in the switch cavity, the plug 14 plays a sealing role in two water service pipes 11, and the temperature control switch 6 is in a closed state. The bottom end of the control cylinder 12 is provided with a through hole, and the temperature memory alloy column 13 passes through the through hole at the bottom end of the control cylinder 12.
Referring to fig. 2 and 5, in case of fire, the bottom end of the temperature memory alloy column 13 is heated to expand, the temperature memory alloy column 13 extends outward from the control cylinder 12, the limiting ring 16 compresses the limiting spring 15, and the position of the plug 14 moves downward along with the temperature memory alloy column 13, so that the plug 14 loses the sealing effect on the water pipe 11, the temperature control switch 6 is opened, the spray pipes 5 on the two sides of the temperature control switch 6 are communicated, and water in the water distribution branch pipe 4 is sprayed out through the normally-open spray head 8. After the fire is over, the temperature memory alloy column 13 restores to the normal temperature and then restores to the original state, the temperature memory alloy is wholly contracted into the control cylinder 12, the limit spring 15 also restores to the original state to enable the plug 14 to return to the switch cavity, so that the temperature control switch 6 is closed, and the normally-open spray header 8 does not spray water indoors any more.
Referring to fig. 5 and 6, the lower end of the temperature memory alloy column 13 is connected with a limiting piece 17, a strong positioning spring 18 is arranged on the limiting piece 17, the upper end of the strong positioning spring 18 is in contact with the outer wall of the bottom end of the control cylinder 12, and the strong positioning spring 18 can play a certain strong limiting role on the temperature memory alloy to prevent the temperature memory alloy column 13 from excessively shrinking into the control cylinder 12 when the room temperature is too low, so that the sealing effect of the plug 14 is influenced.
Referring to fig. 5, the control cylinder 12 is detachably connected to the switch tube 10 by a bolt, and the temperature memory alloy pillar 13 is detachably connected to the plug 14 by a bolt, so that the control cylinder 12 can be detached, and the plug 14 can be detached and replaced, thereby preventing the plug 14 from aging and affecting the sealing effect.
Referring to fig. 6, the lower extreme of normally opening shower head 8 is provided with dispersion spray sheet 27, makes normally opening shower head 8 spun water meet dispersion spray sheet 27 and take place to splash, enlarges the water spray area of normally opening shower head 8, and the atomizing net 28 has been put to the end cover of normally opening shower head 8, and the water droplet that splashes can take place to atomize when meeting atomizing net 28 to it is more even to the scene of fire water spray.
The implementation principle of the embodiment is as follows: when a fire breaks out, the bottom end of a temperature memory alloy column 13 in the temperature control switch 6 is heated and expanded, the temperature memory alloy column 13 integrally extends out of the control cylinder 12, and the position of a plug 14 moves downwards along with the temperature memory alloy column 13, so that the plug 14 loses the sealing effect on the water service pipe 11, the temperature control switch 6 is opened, and water of the water distribution branch pipe 4 is sprayed out through the normally-open spray head 8 to extinguish the fire. After the fire is over, the temperature memory alloy column 13 recovers to the normal temperature and then recovers to the original shape, the temperature memory alloy integrally shrinks into the control cylinder 12, so that the temperature control switch 6 is closed, and the normally-open spray header 8 does not spray water indoors any more.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the 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 (10)
1. The fire-fighting spraying system is characterized by comprising a fire-fighting pool (1) arranged outside a building, wherein a water distribution main pipe (2) is communicated with the bottom end of the fire-fighting pool (1), a water pump (3) is arranged on the water distribution main pipe (2), the water distribution main pipe (2) is communicated with a plurality of water distribution branch pipes (4), the water distribution branch pipes (4) are communicated with a plurality of spraying pipes (5), a temperature control switch (6) is arranged on each spraying pipe (5), the tail end of each spraying pipe (5) is communicated with a water flow switch (7), the tail end of each water flow switch (7) is communicated with a normally-open spraying head (8), a PLC control box (9) is arranged on one side of the fire-fighting pool (1), and the water flow switches (7) and the water pump (3) are electrically connected with the PLC control box (9);
the temperature control switch (6) comprises a switch tube (10) with a closed upper end, the middle positions of two sides of the switch tube (10) are respectively and vertically communicated with a water through pipe (11), the tail ends of the water through pipes (11) are communicated with the spray pipe (5), the inner diameter of the switch pipe (10) is larger than that of the water through pipes (11), the lower end of the switch tube (10) is communicated with a control cylinder (12), a temperature memory alloy column (13) is arranged in the control cylinder (12), the upper end of the temperature memory alloy column (13) is connected with a plug (14) which is attached to the inner cavity of the switch tube (10), a limiting ring (16) is arranged on the temperature memory alloy column (13), a limiting spring (15) is arranged in the control cylinder (12), the upper end of the limiting spring (15) is contacted with the bottom end of the limiting ring (16), the bottom end of the control cylinder (12) is provided with a through hole for the temperature memory alloy column (13) to pass through.
2. A fire sprinkler system according to claim 1, characterized in that a fire water tank (19) is arranged on the roof of the building, the lower end of the fire water tank (19) is communicated with a pre-water pipe (20), and the end of the pre-water pipe (20) is communicated with a water distribution main (2).
3. A fire sprinkler system according to claim 2, characterized in that a non-return valve (21) is arranged on the water distribution main (2) at the bottom end of the fire pool (1).
4. A fire sprinkler system according to claim 1, wherein a water level monitoring device is disposed in the fire pool (1), the fire pool (1) is communicated with a water replenishing pipe (23), the end of the water replenishing pipe (23) is communicated with a city water supply system, an electric control switch (24) is disposed on the water replenishing pipe (23), and the water level monitoring device and the electric control switch (24) are electrically connected with the PLC control box (9).
5. A fire sprinkler system according to claim 1, characterized in that an alarm (25) is provided on one side of the normally open sprinkler head (8), a heat insulation box (26) is provided on the outer side of the alarm (25), and the alarm (25) is electrically connected with the PLC control box (9).
6. A fire sprinkler system according to claim 1, characterized in that the normally open sprinkler head (8) is provided at its lower end with a dispersion spray sheet (27), and the normally open sprinkler head (8) is sleeved at its end with an atomizing net (28).
7. A fire sprinkler system according to claim 1, characterized in that the lower end of the temperature memory alloy column (13) is connected with a limiting piece (17), a strong positioning spring (18) is arranged on the limiting piece (17), and the upper end of the strong positioning spring (18) is in contact with the outer wall of the bottom end of the control cylinder (12).
8. A fire sprinkler system according to claim 1, characterized in that the water distribution main (2) is connected with a fire water supply pipe (29), the fire water supply pipe (29) is connected with a fire hydrant (30) at the end, and the fire water supply pipe (29) is provided with a fire valve (31).
9. A fire sprinkler system according to claim 1, characterised in that the control canister (12) is removably connected to the switch tube (10) and the temperature memory alloy post (13) is removably connected to the plug (14).
10. A fire sprinkler system according to claim 1, characterized in that the water distribution main (2) is connected with a terminal water test pipe (32), and the terminal water test pipe (32) is provided with a water test valve (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110125671.0A CN112843568B (en) | 2021-01-29 | 2021-01-29 | Fire-fighting spraying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110125671.0A CN112843568B (en) | 2021-01-29 | 2021-01-29 | Fire-fighting spraying system |
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| Publication Number | Publication Date |
|---|---|
| CN112843568A true CN112843568A (en) | 2021-05-28 |
| CN112843568B CN112843568B (en) | 2022-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110125671.0A Active CN112843568B (en) | 2021-01-29 | 2021-01-29 | Fire-fighting spraying system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113426054A (en) * | 2021-06-22 | 2021-09-24 | 上海恺申消防设备安装有限公司 | Spraying system for building fire fighting |
| CN113786575A (en) * | 2021-08-06 | 2021-12-14 | 陈艳 | Weak current security protection equipment for underground garage |
| CN115445132A (en) * | 2022-09-20 | 2022-12-09 | 郭海伦 | Intelligent fire fighting equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113426054A (en) * | 2021-06-22 | 2021-09-24 | 上海恺申消防设备安装有限公司 | Spraying system for building fire fighting |
| CN113786575A (en) * | 2021-08-06 | 2021-12-14 | 陈艳 | Weak current security protection equipment for underground garage |
| CN115445132A (en) * | 2022-09-20 | 2022-12-09 | 郭海伦 | Intelligent fire fighting equipment |
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| CN112843568B (en) | 2022-06-10 |
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