CN211584979U - Integrated system of gas fire fighting and fire smoke exhaust in centralized control room of power plant - Google Patents

Abstract

The utility model discloses a gas fire control and conflagration integrated system that discharges fume of power plant centralized control room, including fire detection system, gaseous fire control fire extinguishing systems, conflagration system and the fire control center of discharging fume, fire control center is connected with temperature sensing fire detector, smoke sensing fire detector, first delayer, solenoid valve, smoke exhaust fan, smoke exhaust fire damper, smoke exhaust valve and second delayer respectively. The utility model provides a gaseous fire control and conflagration integrated system that discharges fume provides a comprehensive integrated control system, has solved the conflict problem that easily appears when gaseous fire control system, conflagration system operation of discharging fume, and the personnel's when furthest has ensured the conflagration safe and reliable is sparse, eliminates the unsafe factor among the operational environment, on the basis of guaranteeing that personnel's health and safety do not receive the harm, reduces economic loss of property.

Description

Integrated system of gas fire fighting and fire smoke exhaust in centralized control room of power plant

technical field

The utility model belongs to the field of fire protection in a control room of a power plant, in particular to an integrated system for gas fire protection and fire smoke exhaust in a centralized control room of a power plant.

Background technique

At present, the fire protection system design of power plants in my country, especially the centralized control room of thermal power plants, generally adopts the method of gas fire extinguishing instead of water fire due to the consideration that the room contains a large number of precious and precise electrical and thermal panels and instruments. , in order to minimize the economic loss caused by the fire. At the same time, from the functional point of view of the central control room, since a large number of staff are concentrated in the room, according to the requirements of national regulations, the setting of the smoke exhaust system is necessary. In order to prevent conflicts in the operation of the two systems, on the premise that the gas fire extinguishing system is installed in the room, the designer generally cancels the smoke exhaust function in the fire of the smoke exhaust system in the centralized control room, and emphasizes the mechanical ventilation function after the fire extinguishing. Obviously, this kind of unsafe It ignores the spread of smoke in the early stage of the fire and its damage to the escape of room personnel. Therefore, in the above situation, it is necessary to design a fire integrated control system suitable for the centralized control room, and formulate a reasonable fire protection system.

Utility model content

Aiming at the technical problems raised in the above-mentioned prior art, the purpose of the present utility model is to provide an integrated system for gas fire fighting and fire smoke exhaust in a centralized control room of a power plant.

The purpose of the utility model is achieved through the following technical solutions.

An integrated system for gas fire protection and fire smoke exhaust in a centralized control room of a power plant, comprising:

a fire detection system, the fire detection system includes a temperature-sensing fire detector and a smoke-sensing fire detector arranged in a centralized control room;

A gas fire-extinguishing system, the gas fire-extinguishing system includes a gas cylinder, a fire-extinguishing system pipeline and a fire-extinguishing nozzle, the fire-extinguishing nozzle is arranged on the upper part of the centralized control room, the fire-extinguishing nozzle is communicated with the gas cylinder through the fire-extinguishing system pipeline, and the fire-extinguishing system pipeline is provided with a solenoid valve, the solenoid valve is connected with a first delay device;

Fire smoke exhaust system, the fire smoke exhaust system includes a smoke exhaust fan, a smoke exhaust fire damper, a smoke exhaust system pipeline and a smoke exhaust valve, the smoke exhaust fan is arranged outside the centralized control room, and the smoke exhaust fan passes through the smoke exhaust system pipeline It is connected with the interior of the centralized control room. The smoke exhaust fire damper is arranged in the pipeline of the smoke exhaust system, and the smoke exhaust valve is arranged at the bottom of the pipeline of the smoke exhaust system. connected to the timer;

A fire control center, which is respectively connected with a temperature-sensing fire detector, a smoke-sensing fire detector, a first delay device, a solenoid valve, a smoke exhaust fan, a smoke exhaust fire damper, a smoke exhaust valve and a second delay device connected.

The delay time of the first delay device is greater than the delay time of the second delay device, and the delay time of the first delay device is 30s˜90s.

The delay time of the first delay device is 15s longer than the delay time of the second delay device.

The smoke exhaust fire damper is a 280-degree smoke exhaust fire damper.

The fire extinguishing gas in the gas cylinder is one of heptafluoropropane, mixed gas, carbon dioxide or aerosol.

The beneficial effects of the utility model are as follows: the gas fire-fighting and fire smoke-exhaust integrated system provided by the utility model provides a comprehensive integrated control system, which solves the conflict problem that is easy to occur during the operation of the gas fire-fighting system and the fire smoke-exhaust system; It guarantees the safe and reliable evacuation of people in the event of fire to the greatest extent, eliminates unsafe factors in the working environment, and reduces economic and property losses on the basis of ensuring that people's lives, health and safety are not damaged.

Description of drawings

Figure 1 is a schematic structural diagram of the present invention.

In the figure, 1 is a temperature-sensing fire detector, 2 is a smoke-sensing fire detector, 3 is a gas cylinder, 4 is a fire extinguishing system pipeline, 5 is a solenoid valve, 6 is a fire extinguishing nozzle, 7 is a first delay, and 8 is the exhaust fan, 9 is the exhaust system pipeline, 10 is the exhaust fire damper, 11 is the exhaust valve, 12 is the second delay device, 13 is the fire control center, and 14 is the centralized control room.

Detailed ways

As shown in Figure 1, an integrated system for gas fire protection and fire smoke exhaust in the centralized control room of a power plant is used to ensure timely and effective extinguishing of indoor fires, protect the life safety of workers, and reduce economic and property losses. It can be widely used in various types of , in the unit or centralized control room of power plants of various scales. Including fire detection system, gas fire extinguishing system, fire smoke exhaust system and fire control center.

The fire detection system is used to detect the smoke in the centralized control room 14 and the temperature in the centralized control room 14, and transmit the detection results to the fire control center 13; The smoke detector 2 , the temperature detector 1 and the smoke detector 2 are evenly arranged on the top of the centralized control room 14 to ensure that the entire area of the centralized control room can be detected.

The gas fire extinguishing system is used to spray fire-extinguishing gas into the centralized control room 14 after the people are evacuated in the event of a fire to effectively extinguish the fire; the gas fire-extinguishing system includes gas cylinder 3, fire extinguishing system pipeline 4 and fire sprinkler 6, and the gas cylinder 3 extinguishes the fire The gas is one of heptafluoropropane, mixed gas, carbon dioxide or aerosol; the fire-extinguishing nozzles 6 are arranged on the upper part of the centralized control room 14 or at the ceiling of the centralized control room 14, and the fire-extinguishing nozzles 6 are evenly distributed to ensure that all the fire-extinguishing nozzles 6 can cover the entire set. Control room area; fire extinguishing nozzle 6 is communicated with gas cylinder 3 through fire extinguishing system pipeline 4, and electromagnetic valve 5 is provided on fire extinguishing system pipeline 4, and electromagnetic valve 5 is connected with a first delay device 7; electromagnetic valve 5 is used to control For the opening and closing of the pipeline 4 of the fire extinguishing system, the first delay device 7 is used to control the opening and closing time of the solenoid valve 5 , thereby controlling the working time of the fire extinguishing nozzle 6 .

The fire smoke exhaust system is used to discharge the smoke in the smoke storage area in the early stage of the fire, to prevent the smoke from sinking, and to ensure the evacuation of the staff and the safety of life and health; the fire smoke exhaust system includes a smoke exhaust fan 8, a smoke exhaust fire damper 10, a smoke exhaust The system pipeline 9 and the smoke exhaust valve 11, the smoke exhaust fire damper 10 is a 280-degree smoke exhaust fire damper; the smoke exhaust fan 8 is arranged outside the centralized control room 14, and the smoke exhaust fan 8 communicates with the centralized control room 14 through the smoke exhaust system pipeline 9 Internally connected, the smoke exhaust and fire damper 10 is arranged in the smoke exhaust system pipeline 9, the smoke exhaust valve 11 is arranged at the bottom of the smoke exhaust system pipeline 9, the smoke exhaust fan 8, the smoke exhaust fire damper 10 and the smoke exhaust valve 11 are all It is connected with the second delay device 12 ; the second delay device 12 controls the opening and closing time of the smoke exhaust fan 8 , the smoke exhaust fire damper 10 and the smoke exhaust valve 11 . It should be noted that the smoke exhaust fan 8 , the smoke exhaust fire damper 10 and the smoke exhaust valve 11 are opened and closed in a chain in the fire protection system, which is common knowledge in the fire protection system.

Fire control center 13, temperature fire detector 1, smoke detector 2, first delay device 7, solenoid valve 5, smoke exhaust fan 8, smoke exhaust fire damper 10, smoke exhaust valve 11 and second delay The fire control center 13 is used to receive the detection signals of the temperature-sensing fire detector 1 and the smoke-sensing fire detector 2, and control the first delay device 7, the solenoid valve 5, the smoke exhaust fan 8, The operation of the smoke exhaust and fire damper 10 , the smoke exhaust valve 11 and the second delay device 12 .

Further, the delay time of the first delay device 7 is greater than the delay time of the second delay device 12 , and the delay time of the first delay device 7 is 30s˜90s. Preferably, the delay time of the first delay device 7 is 15s longer than the delay time of the second delay device 12 .

It should be noted that the above-mentioned control relationship, the control of various valves, and the software involved in the control are all in the prior art, and will not be described in detail in the present invention.

The working process of the above-mentioned integrated system is as follows: in the fire detection system, the internal temperature-sensing detection element of the temperature-sensing fire detector 1 provides a fire alarm signal to the fire control center 13, and the internal smoke-sensing detection element of the smoke-sensing fire detector 2 provides a path of fire alarm signal. The fire alarm signal is sent to the fire control center 13 .

In the early stage of the fire, the fire control center 13 firstly receives the fire alarm signal from any one of the temperature-sensing fire detector 1 or the smoke-sensing fire detector 2, and the fire control center 13 confirms the pre-fire alarm signal according to the threshold value and controls the gas according to the pre-fire alarm signal Fire extinguishing system or fire smoke exhaust system; when the fire control center receives the two fire alarm signals of the temperature-sensing fire detector 1 and the smoke-sensing fire sensor 2, the fire control center 13 confirms the real fire alarm signal according to the threshold and controls the gas Fire extinguishing system and fire smoke extraction system.

Since the size and internal space position of the centralized control room 14 are not the same, the delay time of the first delay device 7 in the gas fire extinguishing system is set to T1, and 30s≤T1≤90s; The delay time of the delay device 12 is T2, and T1=T2+15s.

Both the gas fire extinguishing system and the fire smoke exhaust system are controlled by the fire control center 13 . The gas fire extinguishing system is interlocked with the real fire alarm signal of the fire control center 13. When the fire control center 13 receives the real fire alarm signal, the feedback signal is sent to the solenoid valve 5 and the first delay device 7 of the gas fire extinguishing system, and then the first delay The timer 7 ensures that the solenoid valve 5 is opened after a delay of T1, and then the gas fire extinguishing system starts to release the fire extinguishing gas stored in the gas cylinder 3 to the centralized control room 14 to ensure that the fire in the room is effectively extinguished.

The fire smoke exhaust system is interlocked with the pre-fire alarm signal and the real fire alarm signal of the fire control center 13 . When the fire control center 13 receives the pre-fire alarm signal, the feedback signal is sent to the smoke exhaust fan 8, the smoke exhaust fire damper 10 and the smoke exhaust valve 11 of the fire smoke exhaust system, and the above-mentioned equipment is opened in a chain within 15s, and the exhaust in the fire accident is carried out. To ensure that the fire smoke is discharged before the operation of the gas fire protection system. At the same time, the fire smoke exhaust system is interlocked with the real fire alarm signal system of the fire control center 13. When the fire control center 13 receives the real fire alarm signal, the feedback signal is sent to the smoke exhaust fan 8, smoke exhaust and fire damper 10, exhaust fan of the fire smoke exhaust system. The smoke valve 11 and the second delay device 12, and then the second delay device 12 ensures that the above equipment of the fire smoke exhaust system is closed after the delay time T2, so as to ensure that the fire smoke exhaust system can be closed before the fire extinguishing gas is released to ensure that the fire extinguishing gas It can fill the room and achieve good fire extinguishing effect. After the fire is over, the fire control center 13 can remotely control the opening of the fire smoke exhaust system, including the smoke exhaust fan 8, the smoke exhaust fire damper 10 and the smoke exhaust valve 11, to ensure that the fire extinguishing gas in the room is promptly removed after the fire is extinguished.

Specific embodiment: First, according to the size of the central control room 14 (assuming 200m ² ) and the layout of the internal evacuation passages, set the delay time of the first delay device 7 in the gas fire extinguishing system to 45s; The delay time of the delay device 12 is 45s-15s=30s. It is assumed that in the early stage of the fire, the fire control center 13 first receives a fire alarm signal from the smoke detector 2. It is assumed that the fire control center 13 receives the fire alarm signal from the heat detector 1 after 60s, that is, a pre-fire alarm. The time difference between the signal and the real fire alarm signal is 60s.

One: In the early stage of the fire, the fire control center 13 receives the pre-fire alarm signal and feeds it back to the fire smoke exhaust system. After receiving the pre-fire alarm signal feedback from the fire control center 13, the smoke exhaust fan 8, the smoke exhaust fire damper 10 and the smoke exhaust valve 11 of the fire smoke exhaust system all ensure that the chain is opened within 15s to exhaust smoke.

Two: With the further development of the fire, after 60s, the fire control center 13 receives the real alarm signal, and feeds it back to the gas fire extinguishing system and the fire smoke exhaust system respectively. After a delay of 30 s, the second delay device 12 of the fire smoke exhaust system shuts down the smoke exhaust fan 8 , the smoke exhaust fire damper 10 and the smoke exhaust valve 11 of the fire smoke exhaust system to stop smoke exhaust. At the same time, after the delay of 30s+15s=45s, the first delayer 7 of the gas fire extinguishing system will open the solenoid valve 5 by the interlock control, and the gas fire extinguishing system will start to release the fire extinguishing gas stored in the gas cylinder 3 into the centralized control room 14 , put out the fire in the room.

3: When the fire control room confirms that the fire has been extinguished, the fire control center 13 will remotely control the smoke exhaust fan 8, smoke exhaust fire damper 10 and smoke exhaust valve 11 of the fire exhaust system to conduct exhaust after the fire to ensure that The life, health and safety of the staff who entered the room after the fire.

The above are only the preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention. It should be pointed out that those skilled in the art, under the premise of the technical solutions of the present invention, can also make further improvements and Changes, these improvements and changes should all be covered within the protection scope of the present invention.

Claims (5)

1. A gas fire protection and fire smoke exhaust integrated system of a power plant centralized control room is characterized by comprising:

the fire detection system comprises a temperature-sensing fire detector and a smoke-sensing fire detector which are arranged in a centralized control room;

the gas fire-fighting system comprises a gas steel cylinder, a fire-fighting system pipeline and a fire-fighting nozzle, wherein the fire-fighting nozzle is arranged at the upper part of the centralized control room and is communicated with the gas steel cylinder through the fire-fighting system pipeline, and the fire-fighting system pipeline is provided with an electromagnetic valve which is connected with a first delayer;

the fire smoke discharge system comprises a smoke discharge fan, a smoke discharge fireproof valve, a smoke discharge system pipeline and a smoke discharge valve, wherein the smoke discharge fan is arranged outside the centralized control room and is communicated with the inside of the centralized control room through the smoke discharge system pipeline;

and the fire control center is respectively connected with the temperature-sensing fire detector, the smoke-sensing fire detector, the first delayer, the electromagnetic valve, the smoke exhaust fan, the smoke exhaust fire valve, the smoke exhaust valve and the second delayer.

2. The integrated gas fire protection and fire smoke exhaust system of a centralized power plant control room of claim 1, wherein the delay time of the first delayer is greater than the delay time of the second delayer, and the delay time of the first delayer is 30-90 s.

3. The integrated gas fire protection and fire smoke evacuation system for a central power plant control room of claim 2, wherein the delay time of the first delay timer is 15s more than the delay time of the second delay timer.

4. The integrated gas fire protection and fire smoke evacuation system for a centralized power plant control room of claim 1, wherein said smoke evacuation fire damper is a 280 degree smoke evacuation fire damper.

5. The integrated gas fire protection and fire smoke evacuation system for a centralized power generation plant control room of claim 1, wherein the fire suppressing gas in the gas cylinder is one of heptafluoropropane, a mixed gas, carbon dioxide, or an aerosol.

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