CN114534142A - Compressed air foam water mist fire extinguishing system for cable trench of urban fusion type transformer substation - Google Patents
Compressed air foam water mist fire extinguishing system for cable trench of urban fusion type transformer substation Download PDFInfo
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- CN114534142A CN114534142A CN202210183611.9A CN202210183611A CN114534142A CN 114534142 A CN114534142 A CN 114534142A CN 202210183611 A CN202210183611 A CN 202210183611A CN 114534142 A CN114534142 A CN 114534142A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000006260 foam Substances 0.000 title claims abstract description 69
- 239000003595 mist Substances 0.000 title claims abstract description 55
- 230000004927 fusion Effects 0.000 title claims abstract description 31
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- 239000007788 liquid Substances 0.000 claims abstract description 14
- 238000005192 partition Methods 0.000 claims abstract description 14
- 239000007921 spray Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 7
- 239000000779 smoke Substances 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 3
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Classifications
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
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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
-
- 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
- A62C31/12—Nozzles specially adapted for fire-extinguishing for delivering foam or atomised foam
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C37/00—Control of fire-fighting equipment
- A62C37/36—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device
- A62C37/38—Control of fire-fighting equipment an actuating signal being generated by a sensor separate from an outlet device by both sensor and actuator, e.g. valve, being in the danger zone
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C5/00—Making of fire-extinguishing materials immediately before use
- A62C5/02—Making of fire-extinguishing materials immediately before use of foam
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The invention relates to a compressed air foam water mist fire extinguishing system for a cable trench of an urban fusion type transformer substation, which comprises a fire monitoring device, a fire alarm controller, a main controller, a compressed air foam water mist device, a partition control valve and a fire extinguishing nozzle, wherein the fire monitoring device is used for acquiring fire information in the cable trench of the urban fusion type transformer substation and sending the fire information to the fire alarm controller; the foam water mist fire extinguishing liquid is sprayed into a cable trench of the urban integrated substation through a fire extinguishing nozzle of a fire area to extinguish fire. The invention accurately mixes and provides fire extinguishing liquid in real time, quickly covers a fire area and realizes quick fire extinguishing.
Description
Technical Field
The invention relates to a compressed air foam water mist fire extinguishing system for a cable trench of an urban fusion type transformer substation, and belongs to the technical field of fire fighting of cable trenches of urban fusion type transformer substations.
Background
Aiming at the problem of difficult planning and construction of urban transformer substations, three types of urban fusion transformer substations, namely an environment fusion transformer substation, a close-proximity fusion transformer substation and an embedded fusion transformer substation, are proposed at present, the attack and stiffness action of the fusion development of a power grid and an urban is promoted, and the coordinated fusion development of the transformer substations and urban buildings, and the power transmission line and an urban pipe gallery is promoted.
The cable is safe to operate in normal work, but when the cable is in fault states such as overload, short circuit and local overheating and under the action of external heat, insulation resistance of an insulating material is reduced, the insulating material loses insulating capability, and then the cable is burnt, and even a fire accident is caused. The working mode of the existing fire water spraying system is mainly jet type, namely municipal water, foam or dry powder is pressurized by a pump and then enters a pipeline to jet out for fire extinguishing. The jet-type water spraying system has the disadvantages of large water consumption, large motor, pump, water tank and foam tank, large floor area and relatively high cost.
Therefore, the invention provides a compressed air foam water mist fire extinguishing system for a cable trench of an urban fusion type transformer substation.
Disclosure of Invention
In order to solve the problems, the invention provides a compressed air foam water mist fire extinguishing system for a cable trench of an urban fusion type transformer substation, which can accurately mix and provide fire extinguishing liquid in real time, and can quickly cover a fire area by spraying large-area foam water mist from a nozzle through high-pressure gas, so that the cable trench of the urban fusion type transformer substation is quickly extinguished.
The technical scheme adopted for solving the technical problems is as follows:
the compressed air foam water mist fire extinguishing system for the cable trench of the urban fusion type transformer substation comprises a fire monitoring device, a fire alarm controller, a main controller, a compressed air foam water mist device, a partition control valve and a fire extinguishing nozzle, wherein the fire monitoring device is used for acquiring fire information in the cable trench of the urban fusion type transformer substation and sending the fire information to the fire alarm controller; and the foam water mist fire extinguishing liquid is sprayed into a cable trench of the urban integrated substation through a fire extinguishing nozzle of a fire area to extinguish fire.
As a possible implementation manner of the embodiment, the compressed air foam water mist device comprises a water supply device, a foam tank, an air compressor air storage tank, a pressure stabilizing tank and a mixer, wherein the water supply device, the foam tank and the air compressor air storage tank are respectively connected with the mixer through pipelines, the pressure stabilizing tank is arranged in a pipeline between the air compressor air storage tank and the mixer, and the water supply device, the foam tank, the air compressor air storage tank, the pressure stabilizing tank and the mixer are all electrically connected with a main controller; the mixer is connected with the fire extinguishing nozzle through a pipeline, and the partition control valve is arranged in the pipeline between the mixer and the fire extinguishing nozzle; the mixer mixes water and foam in proportion, the air compressor gas holder provides high-pressure drive gas and atomizes and sprays out the mixture of water and foam.
As a possible implementation manner of this embodiment, the air compressor and the air storage tank include an air compressor and an air storage tank, and the air compressor compresses air and stores the air in the air storage tank as driving air.
As a possible implementation manner of this embodiment, the fire monitoring device includes a temperature sensor and a smoke sensor.
As a possible implementation manner of this embodiment, the control manner of the fire alarm controller includes an automatic control manner or a manual control manner;
the automatic control mode is as follows: the fire monitoring device collects fire information in a cable trench of the urban integrated substation and sends the fire information to the fire alarm controller, the fire alarm controller compares the fire information with an early warning value, if the fire information is larger than the early warning value, the fire is judged to be in fire, and the fire alarm information is sent to the main controller;
the automatic control mode is as follows: and manually pressing a fire alarm button, and directly sending fire alarm information to the main controller by the fire alarm controller.
As a possible implementation manner of this embodiment, the partition control valve is used to control the flow direction of the foam water mist fire extinguishing fluid, and ensure that the foam water mist fire extinguishing fluid enters the protection area where the fire occurs.
As a possible realization of this embodiment, the extinguishing nozzle is provided with a filter, which is arranged in the line close to the extinguishing nozzle.
As a possible realization mode of the embodiment, the fire extinguishing nozzle comprises a single-hole nozzle and a multi-hole nozzle.
As a possible implementation mode of the embodiment, the system further comprises an audible and visual alarm, and the fire alarm controller directly sends fire alarm information and controls the audible and visual alarm to alarm when sending the fire alarm information to the main controller, so that related personnel are reminded of the occurrence of a fire.
As a possible implementation manner of this embodiment, the system further includes a pressure switch, and the pressure switch is disposed in the pipeline behind the partition control valve and used for feeding back to the main controller whether the foam water mist fire extinguishing fluid enters the protection area where the fire disaster occurs.
The technical scheme of the embodiment of the invention has the following beneficial effects:
the compressed air foam water mist fire extinguishing system for the cable trench of the urban fusion type transformer substation has the advantages of simple structure, simplicity and convenience in operation, high mixing precision, high stability, good economy and long service life of equipment, can accurately mix in real time to provide fire extinguishing liquid, and can quickly cover a fire area by large-area foam water mist sprayed from a spray head through high-pressure gas, so that the cable trench of the urban fusion type transformer substation is quickly extinguished.
Compared with the traditional water spray and gas dry powder fire extinguishing system, the compressed air foam fine water mist fire extinguishing system generates smaller fine water mist droplets and sprays the droplets from the upper part. These droplets have a larger surface area and therefore a higher heat exchange capacity. The small fog drops are suspended and dispersed in the air and can reach the shielding area of the fire source. And a small amount of foam mixed liquid can be used for generating a large area of water mist, so that the fire is efficiently extinguished, the temperature is reduced, the smoke is effectively adsorbed, and the life threat of the smoke to people is reduced. Meanwhile, the water consumption is very small, and the cost is greatly reduced. Due to the heat absorption and cooling function, the fire extinguishing effect is very good. The water vapor is generated, and the water vapor has suffocation or dilution effect on indoor fire and smoke exhaust effect. When the radiant heat and the hot air flow can not be close to the fire point, the water curtain can be used as a protective water curtain. The reflection action force of the water jet is small.
The invention takes compressed air pressurized by a high-pressure air compressor as power, presses water and foam into a proportional mixing device to be mixed according to a set proportion, and then outputs the mixture to a water mist spray head of a fire-fighting subarea. When the fire monitoring device of the compressed air foam water mist fire extinguishing system detects fire, the control valve is automatically opened, and the foam water mist fire extinguishing liquid is sprayed to extinguish fire. The invention can atomize and spray a large amount of water and foam mixture, uses a small amount of foam mixed liquid to generate huge heat exchange area and three-dimensional wrapping range, realizes high-efficiency cooling and fire extinguishing, has great advantages in fire extinguishing of cable joints of cable ducts of transformer substations and urban pipe galleries, has particularly outstanding fire protection effect on the cable joints of the cable ducts of the transformer substations, and is worthy of popularization.
Description of the drawings:
FIG. 1 is a block diagram of a compressed air foam water mist fire suppression system for a cable trench of a city-integrated substation according to an exemplary embodiment;
FIG. 2 is a schematic diagram illustrating the construction of an air reservoir according to an exemplary embodiment;
FIGS. 3(a) and 3(b) are schematic structural views of a bottle head valve according to an exemplary embodiment;
FIG. 4 is a schematic diagram illustrating the structure of a solenoid cylinder head valve in accordance with an exemplary embodiment;
FIGS. 5(a) -5 (c) are schematic diagrams illustrating a partitioned control valve according to an exemplary embodiment;
FIG. 6(a) is a schematic structural diagram illustrating a single orifice showerhead, according to an exemplary embodiment;
fig. 6(b) is a schematic structural view illustrating a multi-orifice spray head according to an exemplary embodiment.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings:
in order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily limit the invention.
Fig. 1 is a schematic structural diagram of a compressed air foam water mist fire extinguishing system for a cable trench of a city fusion type substation according to an exemplary embodiment. As shown in fig. 1, the compressed air foam water mist fire extinguishing system for the cable trench of the urban integrated substation provided by the embodiment of the invention comprises a fire monitoring device, a fire alarm controller, a main controller, a compressed air foam water mist device, a partition control valve and a fire extinguishing nozzle, wherein the fire monitoring device is used for acquiring fire information in the cable trench of the urban integrated substation and sending the fire information to the fire alarm controller, the fire alarm controller judges whether a fire occurs according to the fire information acquired by the fire monitoring device and sends the fire alarm information to the main controller, the main controller controls the compressed air foam water mist device to generate foam water mist fire extinguishing liquid after receiving the fire alarm information, and the main controller controls the partition control valve of a fire area to be opened; and the foam water mist fire extinguishing liquid is sprayed into a cable trench of the urban integrated substation through a fire extinguishing nozzle of a fire area to extinguish fire.
As a possible implementation manner of this embodiment, as shown in fig. 1, the compressed air foam water mist device includes a water supply device, a foam tank, an air compressor air storage tank, a surge tank and a mixer, the water supply device, the foam tank and the air compressor air storage tank are respectively connected with the mixer through a pipeline, the surge tank is arranged in a pipeline between the air compressor air storage tank and the mixer, and the water supply device, the foam tank, the air compressor air storage tank, the surge tank and the mixer are all electrically connected with a main controller; the mixer is connected with the fire extinguishing nozzle through a pipeline, and the partition control valve is arranged in the pipeline between the mixer and the fire extinguishing nozzle; the mixer mixes water and foam in proportion, the air compressor gas holder provides high-pressure drive gas and atomizes and sprays out the mixture of water and foam.
As a possible implementation manner of this embodiment, as shown in fig. 1, the air compressor and the air tank include an air compressor that compresses air and stores the compressed air in the air tank as high-pressure driving air.
As a possible implementation manner of this embodiment, as shown in fig. 2, the gas storage tank may be a pressure device storage tank, which is a main component of the tank type water mist fire extinguishing system, has a nominal working pressure of 15MPa, and is used for storing high-pressure nitrogen or compressed air, and is an energy device for extinguishing fire in the whole system. When a fire disaster happens, the gas is started to open the bottle head valve, the pressurized driving gas in the storage bottle is released, and the fire extinguishing agent is driven to extinguish the fire.
As a possible implementation manner of this embodiment, as shown in fig. 3(a) and 3(b), the cylinder of the pressurizing device is provided with a cylinder head valve for sealing the pressurized gas in the cylinder. The fixed sleeve is arranged on the cylinder valve and is used for preventing the cylinder valve from misoperation caused by the fact that a cylinder valve handle rotates due to collision and vibration in the processes of transportation, installation and debugging. In a fire, the cylinder valve is opened by the actuating gas to release the pressurized gas to drive the fire extinguishing agent to extinguish the fire.
The bottle head valve has two opening modes of gas starting and mechanical manual operation. The gas starts and pushes a piston rod in the driving cylinder by starting gas, a bottle head valve handle is jacked open, and a bottle head valve is opened; the mechanical manual operation is to manually pull a handle of the bottle head valve to open the bottle head valve, and the mode is adopted in emergency.
The process of filling the cylinder head valve with driving gas is as follows: the bottle group is fixed firstly, then the driving gas filling port is connected with a gas source, and the filling can be carried out by loosening the compression screw anticlockwise.
As a possible implementation manner of this embodiment, as shown in fig. 4, the cylinder of the pressurizing device is provided with an electromagnetic cylinder head valve, which functions as the cylinder head valve to seal the starting gas in the starting cylinder. The electromagnetic cylinder valve is provided with a stop catch which is arranged for preventing the valve from being mistakenly operated due to collision and vibration in the processes of transportation, installation and debugging, so that the leakage or the misoperation of the electromagnetic cylinder valve is caused. After the valve is installed on site, the stop baffle plate must be pulled out to be in place and fastened by screws before the valve is put into use, otherwise, the valve cannot be started or is damaged.
The electromagnetic bottle head valve has two opening modes of electric starting and mechanical manual operation. The electric start is realized by sending a valve opening instruction by the controller, so that the electromagnet acts to open the electromagnetic bottle head valve; the mechanical manual operation is to pull out the bolt manually, pull the handle upwards and open the electromagnetic bottle valve. The latch should be removed prior to mechanical manipulation, which would otherwise not be possible.
The electromagnetic bottle head valve is provided with a pressure gauge for displaying the gas pressure in the bottle. When the pressure indication is below the green zone, the starting gas should be recharged.
When the electromagnetic cylinder head valve is filled with starting gas, the starting gas can be directly connected with the outlet of the electromagnetic cylinder head valve, and the connecting thread is M14 multiplied by 1.5 (external thread). After filling, the electromagnetic bottle valve can automatically reset and seal.
As a possible implementation manner of this embodiment, as shown in fig. 1, the fire monitoring device includes a temperature sensor and a smoke sensor.
As a possible implementation manner of this embodiment, the control manner of the fire alarm controller includes an automatic control manner or a manual control manner;
the automatic control mode is as follows: the fire monitoring device collects fire information in a cable trench of the urban integrated substation and sends the fire information to the fire alarm controller, the fire alarm controller compares the fire information with an early warning value, if the fire information is larger than the early warning value, the fire is judged to be in fire, and the fire alarm information is sent to the main controller;
the automatic control mode is as follows: and manually pressing a fire alarm button, and directly sending fire alarm information to the main controller by the fire alarm controller.
As a possible implementation manner of this embodiment, the partition control valve is used to control the flow direction of the foam water mist fire extinguishing fluid, so as to ensure that the foam water mist fire extinguishing fluid enters the protection area where a fire hazard occurs.
The zone control valves are mounted on the system distribution pipes as shown in fig. 5(a) -5 (c), with the outlet ends connected to fire suppressant delivery lines leading to the protected zone.
The zone control valve is normally closed normally, and has two opening modes of electric starting and mechanical emergency manual operation.
Electric starting: when a fire disaster happens, an active starting signal is given by the electric control cabinet, the subarea control valve is opened, and the position display pointer is at an opening (O) position at the moment. The fire extinguishing agent flows to the corresponding protection area through the zone control valve. While providing passive dry contact feedback signals of the valve open state.
Electric closing: after the fire extinguishing is finished, an active closing signal is given by the electric control cabinet, the partition control valve is closed, and the position display pointer is at the position of 'off' (S). And can provide a valve-off passive dry contact feedback signal.
Manual opening: firstly, the clutch handle is lifted to separate the clutch up and down, then the handle switch is rotated according to the manual indication direction of opening on the valve body, and the subarea control valve is opened.
Manual reset: after fire extinguishing is finished, the handle switch is rotated according to the manual indication direction of 'off' on the valve body, the zone control valve is closed, then the clutch handle is put down, the clutch is engaged up and down, and the zone control valve is successfully reset.
As a possible realization of this embodiment, the extinguishing nozzle is provided with a filter, which is arranged in the line close to the extinguishing nozzle. The filter is an important part in a water mist fire extinguishing system, and impurities possibly occurring in the system are filtered through the filter, so that the fire extinguishing agent is smoothly conveyed, and the fire extinguishing nozzle is prevented from being blocked.
As a possible implementation manner of this embodiment, as shown in fig. 6(a) and 6(b), the fire-extinguishing nozzle includes a single-hole nozzle and a multi-hole nozzle. The fire extinguishing nozzle is arranged on a pipeline in a pipe network and sprays water mist to extinguish fire.
As a possible implementation manner of the embodiment, the system further comprises an audible and visual alarm, and the fire alarm controller directly sends fire alarm information to the main controller and controls the audible and visual alarm to remind related personnel of the occurrence of a fire condition.
As a possible implementation manner of this embodiment, the system further includes a pressure switch, and the pressure switch is disposed in the pipeline behind the partition control valve and used for feeding back to the main controller whether the foam water mist fire extinguishing fluid enters the protection area where the fire disaster occurs. When a fire occurs in the protection area, the fire monitoring device sends a fire signal to the fire alarm controller, the fire alarm controller sends out an acoustic and optical alarm signal and simultaneously sends out a fire extinguishing instruction to the main controller, the pressurizing device and the selector valve of the corresponding protection area are opened successively, and water mist is sprayed to the corresponding protection area to extinguish the fire.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A compressed air foam water mist fire extinguishing system for a cable trench of an urban fusion type transformer substation is characterized by comprising a fire monitoring device, a fire alarm controller, a main controller, a compressed air foam water mist device, a partition control valve and a fire extinguishing nozzle, wherein the fire monitoring device is used for collecting fire information in the cable trench of the urban fusion type transformer substation and sending the fire information to the fire alarm controller; and the foam water mist fire extinguishing liquid is sprayed into a cable trench of the urban integrated substation through a fire extinguishing nozzle of a fire area to extinguish fire.
2. The system for extinguishing fire by using compressed air foam water mist for the cable trench of the urban fusion type substation according to claim 1, wherein the device for extinguishing fire by using compressed air foam water mist comprises a water supply device, a foam tank, an air compressor air storage tank, a surge tank and a mixer, wherein the water supply device, the foam tank and the air compressor air storage tank are respectively connected with the mixer through pipelines, the surge tank is arranged in a pipeline between the air compressor air storage tank and the mixer, and the water supply device, the foam tank, the air compressor air storage tank, the surge tank and the mixer are all electrically connected with a main controller; the mixer is connected with the fire extinguishing nozzle through a pipeline, and the partition control valve is arranged in the pipeline between the mixer and the fire extinguishing nozzle; the mixer mixes water and foam in proportion, the air compressor gas holder provides high-pressure drive gas and atomizes and sprays out the mixture of water and foam.
3. The compressed air foam water mist fire extinguishing system for the cable trench of the urban fusion type substation according to claim 2, wherein the air compressor and the air storage tank comprise an air compressor and an air storage tank, and the air compressor compresses air and stores the air in the air storage tank as driving gas.
4. The compressed air foam water mist fire extinguishing system for the cable trench of the urban fusion type substation according to claim 1, wherein the fire monitoring device comprises a temperature sensor and a smoke sensor.
5. The compressed air foam water mist fire extinguishing system for the cable trench of the urban fusion type substation according to claim 1, wherein the control mode of the fire alarm controller comprises an automatic control mode or a manual control mode;
the automatic control mode is as follows: the fire monitoring device collects fire information in a cable trench of the urban integrated substation and sends the fire information to the fire alarm controller, the fire alarm controller compares the fire information with an early warning value, if the fire information is larger than the early warning value, the fire is judged to be in fire, and the fire alarm information is sent to the main controller;
the automatic control mode is as follows: and manually pressing a fire alarm button, and directly sending fire alarm information to the main controller by the fire alarm controller.
6. The compressed air foam water mist fire extinguishing system for the cable trench of the urban fusion type substation according to claim 1, wherein the partition control valve is used for controlling the flow direction of foam water mist fire extinguishing liquid and ensuring that the foam water mist fire extinguishing liquid enters a protection area where a fire disaster occurs.
7. The compressed air foam water mist fire extinguishing system for the cable trench of the urban fusion type substation according to claim 1, wherein the fire extinguishing nozzle is provided with a filter, and the filter is arranged in a pipeline close to the fire extinguishing nozzle.
8. The compressed air foam water mist fire extinguishing system for the cable trench of the urban fusion type substation according to claim 1, wherein the fire extinguishing nozzle comprises a single-hole nozzle and a multi-hole nozzle.
9. The compressed air foam water mist fire extinguishing system for the cable trench of the urban fusion type transformer substation according to any one of claims 1 to 8, further comprising an audible and visual alarm, wherein when the fire alarm controller directly sends fire alarm information to the main controller, the audible and visual alarm is controlled to alarm at the same time to remind related personnel of the occurrence of a fire.
10. The compressed air foam water mist fire extinguishing system for the cable trench of the urban fusion type substation according to any one of claims 1 to 8, further comprising a pressure switch, wherein the pressure switch is arranged in a pipeline behind the zone control valve and used for feeding back whether foam water mist fire extinguishing liquid enters a protection zone where a fire disaster occurs or not to the master controller.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210183611.9A CN114534142A (en) | 2022-02-25 | 2022-02-25 | Compressed air foam water mist fire extinguishing system for cable trench of urban fusion type transformer substation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210183611.9A CN114534142A (en) | 2022-02-25 | 2022-02-25 | Compressed air foam water mist fire extinguishing system for cable trench of urban fusion type transformer substation |
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| CN114534142A true CN114534142A (en) | 2022-05-27 |
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| CN202210183611.9A Pending CN114534142A (en) | 2022-02-25 | 2022-02-25 | Compressed air foam water mist fire extinguishing system for cable trench of urban fusion type transformer substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115337585A (en) * | 2022-08-17 | 2022-11-15 | 安徽中科安和科技有限公司 | Compressed air foam fire extinguishing system for urban comprehensive pipe gallery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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