Heptafluoropropane gas fire extinguishing pipe network device

Abstract

The utility model discloses a heptafluoropropane gas fire extinguishing pipe network device, which is characterized in that outlet pipes connected with first outlets of heptafluoropropane gas bottles are connected on a gas conveying pipe in parallel, outlets of the gas conveying pipe are connected with gas nozzles, and each outlet pipe is respectively provided with a temperature sensing controller and a first air pressure sensing valve in sequence; a first bypass is arranged on the outlet pipe between the temperature sensing controller and the first air pressure sensing valve, the other port of the first bypass is connected with a first inlet of the heptafluoropropane gas bottle, and a control valve and a gas conveying branch pipe are arranged on a gas conveying header pipe connected with the gas filling port. The fire extinguishing device is reasonable in structure, multiple detection and alarm of fire alarm are realized through the three groups of gas supply equipment and the alarm equipment which are connected in parallel, so that equipment failure caused by structural damage is avoided, and meanwhile, the cruising ability of the fire extinguishing device is ensured through the arrangement of the three groups of heptafluoropropane gas bottles; and meanwhile, the heptafluoropropane gas bottle is fixedly connected with the pipeline, so that the risk of gas leakage is eliminated, and the practicability of the equipment is improved.

Description

Technical Field

[0001] The utility model belongs to a fire safety gas fire extinguishing pipe network device, in particular to a heptafluoropropane gas fire extinguishing pipe network device. Background Technique

[0002] Heptafluoropropane is a clean gas chemical fire extinguishing agent that mainly uses chemical fire extinguishing and has a physical fire extinguishing effect. It belongs to polyfluorinated alkanes. It is colorless, odorless, low-toxic, non-conductive, does not pollute the protected object, will not damage property and precision facilities. Heptafluoropropane can extinguish Class B, C fires and electrical fires reliably at a relatively low fire extinguishing concentration. It has a small storage space, a high critical temperature, a low critical pressure, can be liquefied and stored at room temperature, and does not contain particles or oily residues after release. It has no destructive effect on the atmospheric ozone layer (ODP value is zero), and its residence time in the atmosphere is 31 - 42 years, meeting the environmental protection requirements.

[0003] Although the existing fire extinguishing devices are widely used, there are still some problems in the actual use process. First, improper operation of the existing gas fire extinguishing devices is likely to cause gas leakage and diversion phenomena, resulting in gas retention and inability to play the fire extinguishing role. Second, many of the existing gas fire extinguishing devices are manually operated, with greater danger, a smaller amount of sprayed gas, and lower work efficiency. Third, many of the existing gas fire extinguishing devices directly replace the new bottles after use, and it is inevitable that the connection parts will become loose during the replacement process, resulting in gas leakage and increasing costs. Content of the Utility Model

[0004] The purpose of the utility model is to provide a heptafluoropropane gas fire extinguishing pipe network device, the structure of which is reasonable. It can achieve multiple detection and alarms for fire alarms through three groups of mutually parallel gas supply devices and alarm devices, thus avoiding equipment failure caused by structural damage. At the same time, the endurance of the fire extinguishing device is ensured by setting three groups of heptafluoropropane gas cylinders. At the same time, through the fixed connection between the heptafluoropropane gas cylinders and the pipeline, the risk of air leakage is eliminated, and the practicability of the equipment is improved.

[0005] The object of the present utility model is achieved as follows: A heptafluoropropane gas fire extinguishing pipe network device, the first outlets of the heptafluoropropane gas cylinders arranged evenly are respectively connected to the outlet pipes in parallel on the gas transmission pipe. A gas nozzle is connected to the outlet of the gas transmission pipe. A temperature induction controller and a first air pressure induction valve are respectively and sequentially installed on each outlet pipe. A first bypass is provided on the outlet pipe between the temperature induction controller and the first air pressure induction valve. The other port of the first bypass is connected to the first inlet of the heptafluoropropane gas cylinder. A control valve and evenly distributed and parallel gas transmission branches are sequentially arranged on the gas transmission main pipe connected to the gas filling port. The evenly distributed and parallel gas transmission branches respectively correspond to the evenly arranged heptafluoropropane gas cylinders. Each gas transmission branch is respectively connected to the second inlet of the corresponding heptafluoropropane gas cylinder through a second air pressure induction valve. A return pipe equipped with a first solenoid valve is respectively connected to the second outlet of each heptafluoropropane gas cylinder. The return pipes are connected in parallel to the return gas main pipe. A second bypass is provided on the return gas main pipe. The second bypass is connected to the gas transmission main pipe through a second solenoid valve installed.

[0006] The present utility model includes three groups of heptafluoropropane gas cylinders. One end of an outlet pipe is connected to the bottle mouth of the heptafluoropropane gas cylinder. The other ends of the three groups of outlet pipes are connected in parallel to a gas transmission pipe. A gas nozzle is connected to the gas outlet end of the gas transmission pipe. One end of a first bypass is connected in parallel to the bottle mouth of the heptafluoropropane gas cylinder. A temperature induction controller is connected to the outlet pipe on the side close to the heptafluoropropane gas cylinder. A first air pressure induction valve is connected to the outlet pipe on the side close to the gas transmission pipe. When there is a pressure difference on both sides of the first air pressure induction valve, the first air pressure induction valve opens. The other end of the first bypass is connected to the outlet pipe between the temperature induction controller and the first air pressure induction valve. The present utility model connects the three groups of heptafluoropropane gas cylinders in parallel on the outlet pipe through the arrangement of the three groups of outlet pipes, and senses the temperature through three mutually parallel temperature induction controllers. When the temperature is too high, the three groups of temperature induction controllers open. However, due to the different positions of the ignition points and the three groups of temperature induction controllers, the opening sequence of the three groups of temperature induction controllers also changes. When the first opened temperature induction controller is opened, the outlet pipe of this group is connected. At this time, the gas in the heptafluoropropane gas cylinder connected to this group of outlet pipes enters the outlet pipe. At this time, there is a pressure difference on both sides of the first air pressure induction valve of this group, and the first air pressure induction valve of this group opens. The gas in the heptafluoropropane gas cylinder enters the gas transmission pipe along the outlet pipe. At this time, the air pressures on both sides of the first air pressure induction valves of the other two groups are the same. Therefore, the first air pressure induction valves of the other two groups close, thus avoiding the rapid leakage of gas caused by the synchronous opening of the three groups of heptafluoropropane gas cylinders.

[0007] The outer wall of the heptafluoropropane gas cylinder is connected in parallel with one end of a return air pipe and an air delivery branch pipe. The other ends of the three groups of return air pipes are connected in parallel with a return air main pipe, and the other ends of the three groups of air delivery branch pipes are connected in parallel with an air delivery main pipe. A first solenoid valve is connected inside the return air pipe, and a second air pressure induction valve is connected inside the air delivery branch pipe. The air inlet end of the air delivery main pipe is connected with a gas filling port, and a control valve is connected to one end of the air delivery main pipe close to the gas filling port. A second bypass is connected between the return air main pipe and the air delivery main pipe, and a second solenoid valve is connected inside the second bypass. When the fire extinguishing is over and the heptafluoropropane gas cylinder needs to be refilled with gas, first install the gas replenishing cylinder into the gas filling port and open the control valve. At this time, the gas first enters the air delivery main pipe along the gas replenishing cylinder, and through the parallel connection of the air delivery main pipe and the air delivery branch pipes, the gas is evenly filled into the three groups of air delivery branch pipes. At this time, there is a pressure difference between the air delivery branch pipes and both sides of the heptafluoropropane gas cylinder, that is, the pressure inside the heptafluoropropane gas cylinder is low, while the pressure inside the air delivery branch pipes is high. At this time, the second air pressure induction valve is opened under pressure, and at this time, the air delivery branch pipes and the heptafluoropropane gas cylinder are interconnected, so as to fill the heptafluoropropane gas into the heptafluoropropane gas cylinder. And then when a fire occurs, the heptafluoropropane gas in one of the three groups of heptafluoropropane gas cylinders will flow out. At this time, the temperature induction controller controls the three groups of first solenoid valves to open, and at the same time controls the second solenoid valve to open. At this time, the three groups of heptafluoropropane gas cylinders are interconnected. And when the gas in one group of heptafluoropropane gas cylinders is discharged, the pressure inside this group of heptafluoropropane gas cylinders decreases. At this time, the second air pressure induction valve connected to this group of heptafluoropropane gas cylinders is opened due to the pressure difference, that is, the pressure of this group of heptafluoropropane gas cylinders is lower than that of the other two groups of heptafluoropropane gas cylinders. At this time, the gas in the other two groups of heptafluoropropane gas cylinders flows into the return air main pipe along the return air pipes, then flows into the air delivery main pipe along the second bypass, and finally flows into the opened heptafluoropropane gas cylinder along the air delivery main pipe to replenish the gas.

[0008] The working principle of the utility model is as follows: The utility model connects three groups of heptafluoropropane gas cylinders in parallel on the outlet pipe through the arrangement of three groups of outlet pipes, and senses the temperature through three mutually parallel temperature sensing controllers. When the temperature is too high, the three temperature sensing controllers open. However, due to the different positions of the ignition points and the three temperature sensing controllers, the opening sequence of the three temperature sensing controllers also changes. When the first opened temperature sensing controller is turned on, the outlet pipe of this group is connected, and at this time, the gas in the heptafluoropropane gas cylinder connected to the outlet pipe of this group enters the outlet pipe. At this time, a pressure difference is generated on both sides of the first pressure sensing valve of this group, and the first pressure sensing valve of this group opens. The gas in the heptafluoropropane gas cylinder flows into the gas transmission pipe along the outlet pipe. At this time, the air pressures on both sides of the other two groups of first pressure sensing valves are the same, so the other two groups of first pressure sensing valves close, thus avoiding the rapid leakage of gas caused by the synchronous opening of the three groups of heptafluoropropane gas cylinders. At this time, the heptafluoropropane gas in one of the three groups of heptafluoropropane gas cylinders will flow out. At this time, the temperature sensing controller controls the opening of the three first solenoid valves and simultaneously controls the opening of the second solenoid valve. At this time, the three groups of heptafluoropropane gas cylinders are interconnected. And when the gas in one group of heptafluoropropane gas cylinders is discharged, the air pressure in the heptafluoropropane gas cylinder of this group decreases. At this time, the second pressure sensing valve connected to the heptafluoropropane gas cylinder of this group is opened due to the pressure difference, that is, the air pressure in the heptafluoropropane gas cylinder of this group is lower than that of the other two groups of heptafluoropropane gas cylinders. At this time, the gas in the other two groups of heptafluoropropane gas cylinders flows into the return air main pipe along the return air pipe, then flows into the gas transmission main pipe along the second bypass, and finally flows into the opened heptafluoropropane gas cylinder along the gas transmission main pipe to supplement the gas. When the fire extinguishing is over and gas needs to be supplemented in the heptafluoropropane gas cylinder, first install the gas supplementing cylinder into the gas filling port and open the control valve two. At this time, the gas first enters the gas transmission main pipe along the gas supplementing cylinder, and through the parallel connection of the gas transmission main pipe and the gas transmission branch pipe, the gas is evenly filled into the three groups of gas transmission branch pipes. At this time, a pressure difference is generated between the gas transmission branch pipe and the heptafluoropropane gas cylinder, that is, the air pressure in the heptafluoropropane gas cylinder is low, while the air pressure in the gas transmission branch pipe is high. At this time, the second pressure sensing valve is opened under pressure, and at this time, the gas transmission branch pipe and the heptafluoropropane gas cylinder are interconnected, so as to fill the heptafluoropropane gas into the heptafluoropropane gas cylinder.

[0009] The structure of the utility model is reasonable. Through three mutually parallel gas supply devices and alarm devices, multiple detections and alarms of fire alarms are realized, avoiding equipment failure caused by structural damage. At the same time, through the arrangement of three groups of heptafluoropropane gas cylinders, the endurance of the fire extinguishing device is guaranteed. At the same time, through the fixed connection between the heptafluoropropane gas cylinder and the pipeline, the risk of air leakage is eliminated, and the practicability of the equipment is improved. Brief Description of the Drawings

[0010] The following will further describe the present utility model in conjunction with the drawings. Figure 1 It is a structural schematic diagram of the present utility model.Figure 2 This is the pipeline diagram during fire extinguishing of the present utility model. Figure 3 This is the pipeline diagram during air replenishment of the present utility model. Detailed implementation manners

[0011] A heptafluoropropane gas fire extinguishing pipe network device, as Figure 1 , Figure 2 , Figure 3 shown, the outlet pipes 2 connected to the first outlets of the evenly arranged heptafluoropropane gas cylinders 1 are respectively connected in parallel to the gas transmission pipe 3. A gas nozzle 4 is connected to the outlet of the gas transmission pipe 3. A temperature induction controller 5 and a first air pressure induction valve 6 are successively installed on each outlet pipe 2. A first bypass 7 is provided on the outlet pipe 2 between the temperature induction controller 5 and the first air pressure induction valve 6. The other port of the first bypass 7 is connected to the first inlet of the heptafluoropropane gas cylinder 1. A control valve 10 and evenly arranged and parallel gas transmission branch pipes 11 are successively provided on the gas transmission main pipe 9 connected to the gas filling port 8. The evenly arranged and parallel gas transmission branch pipes 11 respectively correspond to the evenly arranged heptafluoropropane gas cylinders 1. Each gas transmission branch pipe 11 is respectively connected to the second inlet of the corresponding heptafluoropropane gas cylinder 1 through a second air pressure induction valve 12. A return pipe 14 equipped with a first solenoid valve 13 is respectively connected to the second outlet of each heptafluoropropane gas cylinder 1. The return pipes 14 are connected in parallel to the return gas main pipe 15. A second bypass 16 is provided on the return gas main pipe 15. The second bypass 16 is connected to the gas transmission main pipe 9 through a second solenoid valve 17 installed thereon. The number of the evenly arranged heptafluoropropane gas cylinders 1 is 3 groups.

Claims

1. A heptafluoropropane gas fire extinguishing pipe network device, characterized in that: The outlet pipes (2) connected to the first outlets of the uniformly arranged heptafluoropropane gas bottles (1) are respectively connected in parallel to the gas transmission pipe (3), the outlets of the gas transmission pipe (3) are connected to the gas nozzles (4), a temperature sensing controller (5) and a first air pressure sensing valve (6) are respectively installed on each outlet pipe (2), a first bypass (7) is arranged on the outlet pipe (2) between the temperature sensing controller (5) and the first air pressure sensing valve (6), the other end of the first bypass (7) is connected to the first inlet of the heptafluoropropane gas bottle (1), and a control valve (10) and a uniformly arranged gas transmission main pipe (9) are sequentially arranged on the gas filling port (8). The gas delivery branch pipes (11) are connected in parallel, and the uniformly distributed and parallel gas delivery branch pipes (11) correspond to the uniformly arranged heptafluoropropane gas bottles (1). Each gas delivery branch pipe (11) is connected to the second inlet of the corresponding heptafluoropropane gas bottle (1) through a second air pressure sensing valve (12). The second outlet of each heptafluoropropane gas bottle (1) is connected to a return pipe (14) equipped with a first electromagnetic valve (13). The return pipe (14) is connected in parallel to a return gas main pipe (15). A second bypass (16) is arranged on the return gas main pipe (15). The second bypass (16) is connected to the gas delivery main pipe (9) through a second electromagnetic valve (17) installed.

2. A heptafluoropropane gas fire extinguishing pipe network device according to claim 1, characterized in that: The number of evenly distributed heptafluoropropane gas cylinders (1) is 3 groups.

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