A device for purging residual fire agent from the piping of a stored energy fire suppression system

Abstract

This application discloses a device for removing residual fire-fighting agents from pipelines in an energy storage fire-fighting system. It relates to the field of energy storage fire-fighting technology, comprising a fire-fighting agent bottle and a fire-fighting pipeline connected to the bottle. The fire-fighting agent bottle has a removal component at its end furthest from the fire-fighting pipeline. The removal component includes a nitrogen cylinder, a working cylinder with its two ends connected to the nitrogen cylinder and the fire-fighting agent bottle respectively, a connector installed on the inner wall of the fire-fighting agent bottle, and a liquid outlet hole on the outer surface of the connector; and a state switching component. By setting up the removal component, this application can use pressurized nitrogen from the nitrogen cylinder to remove residual perfluorohexanone liquid from the fire-fighting pipeline, preventing the residual perfluorohexanone liquid from absorbing moisture from the air to produce acidic substances that corrode the fire-fighting pipeline, reducing fire-fighting costs, and increasing the product's usability.

Description

Technical Field

[0001] This utility model relates to the field of energy storage fire protection technology, specifically a device for removing residual fire-fighting agents from pipelines of an energy storage fire protection system. Background Technology

[0002] Perfluorohexanone (PFH) is a clear, colorless, and odorless liquid with a boiling point of 49 degrees Celsius. Its extinguishing concentration is 4%-6%, offering significant energy savings. From an environmental perspective, its Global Greenhouse Potential (GWP) is only 1, and its atmospheric lifetime is only 0.014 years (5 days), making it highly valuable for promotion in terms of environmental protection and sustainable development. PFH fire suppression systems are primarily suitable for small spaces where water-based firefighting is not feasible, such as communication rooms, data centers, high and low voltage electrical rooms, power distribution rooms, and fire-fighting energy storage cabinets.

[0003] Perfluorohexanone (PFH) fire suppression systems often leave residues within the piping after release. While pure PPH is insoluble in water, commercial products may contain trace impurities or decomposition products. More importantly, moisture from humid air can gradually seep into the piping. If residual PPH remains in the fire suppression system, this moisture may react slowly with certain fluoride impurities, producing acidic substances such as hydrogen fluoride (HF). Hydrofluoric acid is a highly corrosive acid that can cause severe chemical corrosion to pipes, valves, sprinklers, and other metal components, damaging the piping. Furthermore, the presence of PPH residue represents waste, increases fire suppression costs, and reduces the product's usability. Utility Model Content

[0004] The purpose of this invention is to provide a device for removing residual fire-fighting agents from pipelines of an energy storage fire-fighting system, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for removing residual fire-fighting agents from pipelines of an energy storage fire-fighting system, comprising a fire-fighting agent bottle and a fire-fighting pipeline connected to the fire-fighting agent bottle, wherein a removal component is provided at the end of the fire-fighting agent bottle away from the fire-fighting pipeline; The purging assembly includes a nitrogen cylinder and a working cylinder with its two ends connected to the nitrogen cylinder and the fire-fighting agent cylinder, respectively. It also includes a connector installed on the inner wall of the fire-fighting agent cylinder, with one end of the connector connected to the working cylinder. The outer surface of the connector has a liquid outlet hole, and the other end of the connector is connected to a siphon tube, which is connected to a fire-fighting pipeline. The end of the working cylinder closest to the nitrogen cylinder is connected to a rear plug connector. And a state switching component, used to control the opening of the liquid outlet or the rear plug connecting cylinder.

[0006] Preferably, the state switching component includes a valve core slidably connected to the inside of the working cylinder, with a front plug connected to the end of the valve core near the connector. The front plug extends into the inside of the connector and slides and seals with the connector. Both the valve core and the front plug have air holes. The end of the valve core near the nitrogen cylinder is connected to a rear plug, which extends into the rear plug connecting cylinder and slides and seals with the rear plug connecting cylinder. A plug moving component is also included to drive the rear plug and the front plug to reciprocate, changing the unobstructed state of the liquid outlet or the rear plug connecting cylinder.

[0007] Preferably, the plug moving assembly includes an outer shell connected to the working cylinder, a drive motor is provided on the inner wall of the outer shell, a lead screw is fixedly connected to the output end of the drive motor, a ball nut seat is slidably connected to the lead screw, and a connecting part is installed on the ball nut seat and connected to the valve core through the connecting part.

[0008] Preferably, the working cylinder has a movable groove for the connecting part to move, and the valve core is slidably and sealingly connected to the inner wall of the working cylinder.

[0009] Preferably, the exclusion assembly further includes a control valve and a central controller installed on the fire hydrant, wherein the central controller establishes a bidirectional data connection with the control valve and the drive motor via a Bluetooth communication protocol.

[0010] Preferably, the rear plug structure is a combination of a cone and a cylinder, with the tip of the cone facing the nitrogen cylinder. When the cylindrical part of the rear plug is completely separated from the rear plug connecting cylinder, the front plug completely blocks the liquid outlet.

[0011] Preferably, the fire extinguishing agent bottle is equipped with a pressurized air pump for injecting pressurized gas into the bottle.

[0012] Preferably, the fire extinguishing agent bottle is also equipped with a pressure sensor, and the pressure sensor is bidirectionally connected to the central controller to detect the pressure value of the pressurized gas.

[0013] Compared with the prior art, the beneficial effects of this utility model are: This application, by setting up an exclusion component, allows for the removal of residual perfluorohexanone liquid from fire-fighting agent cylinders even after all perfluorohexanone liquid has been discharged or after a fire detector has detected that the fire has been extinguished, but residual perfluorohexanone liquid remains in the fire-fighting agent cylinders. This prevents the residual perfluorohexanone liquid from absorbing moisture from the air to produce acidic substances that corrode the fire-fighting pipelines, thereby reducing fire-fighting costs and increasing the product's usability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the component in the non-working state of this utility model; Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle; Figure 4 This is a schematic diagram of the cross-sectional structure of the component after it has been put into operation. Figure 5 This utility model Figure 4 Enlarged structural diagram at point B.

[0015] In the diagram: 1. Fire-fighting agent bottle; 2. Nitrogen cylinder; 3. Control valve; 4. Fire-fighting pipeline; 5. Siphon pipe; 6. Rear plug; 7. Drive motor; 8. Outer casing; 9. Ball bearing nut seat; 10. Lead screw; 12. Connector; 13. Liquid outlet; 14. Front plug; 15. Air vent; 16. Valve core; 17. Connecting part; 18. Working cylinder; 19. Rear plug connecting cylinder. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Please see Figure 1-5 This utility model provides a device for removing residual fire-fighting agents in the pipeline of an energy storage fire-fighting system, including a fire-fighting agent bottle 1 and a fire-fighting pipeline 4 connected to the fire-fighting agent bottle 1, with a removal component provided at the end of the fire-fighting agent bottle 1 away from the fire-fighting pipeline 4; The exhaust assembly includes a nitrogen cylinder 2 and a working cylinder 18 connected at both ends to the nitrogen cylinder 2 and the fire-fighting agent cylinder 1, respectively. It also includes a connector 12 installed on the inner wall of the fire-fighting agent cylinder 1, with one end of the connector 12 connected to the working cylinder 18. The outer surface of the connector 12 has a liquid outlet hole 13, and the other end of the connector 12 is connected to a siphon tube 5, which is connected to the fire-fighting pipeline 4. The end of the working cylinder 18 closest to the nitrogen cylinder 2 is connected to a rear plug connector 19. And a state switching component, used to control the liquid outlet 13 or the rear plug connecting tube 19 to be in an unobstructed state; when the fire extinguishing agent bottle 1 finishes spraying perfluorohexanone after the fire occurs, the state switching component closes the liquid outlet 13, and nitrogen can flow into the siphon tube 5 through the rear plug connecting tube 19.

[0019] A pressurized air pump is installed on the outside of the fire-fighting agent cylinder 1 to inject pressurized gas into the cylinder.

[0020] The fire-fighting agent bottle 1 is also equipped with a pressure sensor, which is bidirectionally connected to the central controller to detect the pressure value of the pressurized gas.

[0021] Specifically, firstly, this application, in actual use, shall comply with Figure 1 The schematic diagram shows the installation of the device by rotating it 90 degrees counterclockwise and placing it vertically. Secondly, in this embodiment, the fire-fighting agent is perfluorohexanone liquid fire-fighting agent, and it will be referred to as perfluorohexanone liquid in the following. Other fire-fighting agents that meet the conditions of being liquid at room temperature and becoming corrosive after absorbing water are all included in the scope of this embodiment.

[0022] Subsequently, the exclusion components of this application also include a control valve 3 and a central controller installed on the fire hydrant 4. The central controller establishes a two-way data connection with the control valve 3 and the drive motor 7 via the Bluetooth communication protocol. When in use, this application should be used in conjunction with an external fire detector. The fire detector detects the fire and transmits the relevant fire data to the central controller via communication methods such as the Bluetooth communication protocol. Then, the central controller controls this application to perform its actions.

[0023] The fire pipeline 4 is connected to the external fire sprinkler head. During installation, the fire agent bottle 1 is first fixedly connected to the fire pipeline 4. Then, the working cylinder 18 is fixedly connected to the fire agent bottle 1 and the nitrogen cylinder 2 via threads (the working cylinder 18 and the nitrogen cylinder 2 are connected via threads on the outer surface of the rear plug connecting cylinder 19). Perfluorohexanone liquid is injected into the fire agent bottle 1, and pressurized gas is injected into the fire agent bottle 1 via an external pressurized air pump. When a fire occurs, the central controller will control the control valve 3 to open. The control valve 3 can be a corrosion-resistant solenoid valve. Under the action of the pressurized gas inside the fire agent bottle 1, initially, the perfluorohexanone liquid inside the siphon pipe 5 is sprayed out of the fire sprinkler head through the fire pipeline 4. Subsequently, under the action of the pressurized gas inside the fire agent bottle 1, the perfluorohexanone liquid enters the siphon pipe 5 and the fire pipeline 4 from the outlet hole 13 on the outer surface of the connector 12, and is then sprayed out of the fire sprinkler head.

[0024] Here, the liquid outlet 13 is evenly distributed in a ring on the outer circular surface of the connector 12. The connector 12 is a hollow cylinder, which allows the perfluorohexanone liquid to enter the connector 12 more stably and quickly.

[0025] In two situations, the purge assembly needs to be activated to purge residual perfluorohexanone liquid inside fire-fighting pipe 4: First, when all the perfluorohexanone liquid in fire-fighting agent cylinder 1 has been drained (a small amount may remain), its status can be detected by a pressure sensor. When the pressure sensor detects that the gas pressure inside fire-fighting agent cylinder 1 is equal to atmospheric pressure, it indicates that all the perfluorohexanone liquid in fire-fighting agent cylinder 1 has been drained. At this time, the residual perfluorohexanone liquid inside fire-fighting pipe 4 needs to be purged to ensure the usability of fire-fighting pipe 4 and facilitate its normal operation when fire-fighting agent cylinder 1 is refilled. Second, when the fire detector detects that the fire has been extinguished (the fire detector detects and feeds the data back to the central controller in real time), the central controller should then control the purge assembly to purge the residual perfluorohexanone liquid inside fire-fighting pipe 4. It is important to note that during the purge of residual perfluorohexanone liquid, control valve 3 should remain open to ensure that nitrogen can enter fire-fighting pipe 4.

[0026] When the fire-fighting agent bottle 1 finishes discharging perfluorohexanone after a fire, the liquid outlet 13 is closed by the state switching component. If the fire has been extinguished, this avoids the waste of the remaining perfluorohexanone liquid inside the fire-fighting agent bottle 1, while ensuring the effective removal of residual perfluorohexanone liquid inside the fire-fighting pipeline 4. When the state switching component closes the liquid outlet 13, the rear plug connecting tube 19 is opened simultaneously. The pressurized nitrogen inside the nitrogen cylinder 2 can flow through the rear plug connecting tube 19 and the working cylinder 18 into the siphon tube 5. Finally, the pressurized nitrogen is used to remove the residual perfluorohexanone liquid inside the fire-fighting pipeline 4, preventing the residual perfluorohexanone liquid from absorbing moisture from the air to produce acidic substances that corrode the fire-fighting pipeline 4, reducing fire-fighting costs and increasing the product's value.

[0027] like Figure 3 As shown, the state switching component includes a valve core 16 slidably connected inside the working cylinder 18, and a front plug 14 fixedly connected to one end of the valve core 16 near the connector 12. The front plug 14 extends into the connector 12 and slides and seals with the connector 12. Both the valve core 16 and the front plug 14 have air holes 15 inside. A rear plug 6 is fixedly connected to one end of the valve core 16 near the nitrogen cylinder 2, and the rear plug 6 extends into the rear plug connecting cylinder 19 and slides and seals with the rear plug connecting cylinder 19. The component also includes a plug moving component, which drives the rear plug 6 and the front plug 14 to reciprocate, thereby changing the unobstructed state of the liquid outlet 13 or the rear plug connecting cylinder 19.

[0028] Furthermore, the plug moving assembly includes an outer shell 8 fixedly connected to the working cylinder 18. A drive motor 7 is provided on the inner wall of the outer shell 8. A lead screw 10 is fixedly connected to the output end of the drive motor 7. A ball nut seat 9 is slidably connected to the lead screw 10. A connecting part 17 is installed on the ball nut seat 9 and connected to the valve core 16 through the connecting part 17. A movable groove for the connecting part 17 to move is opened on the working cylinder 18, and the valve core 16 is slidably and sealingly connected to the inner wall of the working cylinder 18.

[0029] Specifically, when the components are not in operation, the central controller controls the drive motor 7 to rotate, thereby causing the ball nut seat 9 connected to the ball screw 10 to move to the right along the ball screw 10. Figure 3 (From the perspective shown), simultaneously driving the connecting part 17 and the valve core 16, which are fixedly connected to the ball nut seat 9, to move to the right ( Figure 3 (From the perspective shown), when the valve core 16 moves to the right, it will simultaneously drive the fixedly connected rear plug 6 and front plug 14 to move to the right. When the front plug 14 moves to the far right (as shown in the image), Figure 5As shown, the front plug 14 blocks the outlet hole 13 to prevent the continuous outflow of perfluorohexanone liquid. At the same time, the rear plug 6 moves away from the rear plug connecting tube 19, and the pressurized nitrogen inside the nitrogen cylinder 2 enters the siphon tube 5 through the vent 15, valve core 16, and front plug 14, and finally enters the fire hydrant 4. The pressure of the nitrogen is used to remove the residual perfluorohexanone liquid inside the fire hydrant 4. It should be noted that after the front plug 14 blocks the outlet hole 13, a portion of perfluorohexanone liquid remains inside the vent 15. Even under the action of gravity and with the rear plug connecting tube 19 in the open state, the pressure of the pressurized nitrogen prevents this small portion of perfluorohexanone liquid from flowing into the nitrogen cylinder 2. In addition, the vent 15 inside the valve core 16 and the front plug 14 are evenly spaced in a ring shape to ensure the stability of the nitrogen flow.

[0030] like Figure 3 As shown, the rear plug 6 is a combination of a cone and a cylinder, with the tip of the cone facing the nitrogen cylinder 2. When the cylindrical part of the rear plug 6 is completely separated from the rear plug connecting cylinder 19, the front plug 14 completely blocks the liquid outlet hole 13.

[0031] Specifically, when the cylindrical part of the rear plug 6 is completely separated from the rear plug connecting cylinder 19, the front plug 14 completely blocks the liquid outlet 13. This ensures that when the rear plug connecting cylinder 19 is opened, a large amount of perfluorohexanone liquid will not enter the inside of the connector 12, reducing the possibility that the perfluorohexanone liquid will reverse into the nitrogen cylinder 2 under the pressure of the pressurized gas inside the fire-fighting agent bottle 1, thus ensuring the normal use of the device.

[0032] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0033] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A device for removing residual fire-fighting agent from pipelines of an energy storage fire-fighting system, comprising a fire-fighting agent bottle (1) and a fire-fighting pipeline (4) connected to the fire-fighting agent bottle (1), characterized in that, The fire-fighting agent bottle (1) is equipped with a discharge component at the end away from the fire-fighting pipeline (4); The exhaust assembly includes a nitrogen cylinder (2) and a working cylinder (18) with its two ends connected to the nitrogen cylinder (2) and the fire-fighting agent cylinder (1) respectively. It also includes a connector (12) installed on the inner wall of the fire-fighting agent cylinder (1), with one end of the connector (12) connected to the working cylinder (18). The outer surface of the connector (12) is provided with a liquid outlet hole (13), and the other end of the connector (12) is connected to a siphon tube (5). The siphon tube (5) is connected to the fire-fighting pipeline (4). The end of the working cylinder (18) near the nitrogen cylinder (2) is connected to a rear plug connector (19). And a state switching component for controlling the opening of the liquid outlet (13) or the rear plug connecting tube (19).

2. The device for removing residual fire-fighting agents from pipelines of an energy storage fire-fighting system according to claim 1, characterized in that: The state switching component includes a valve core (16) slidably connected inside the working cylinder (18), and the valve core (16) is connected to a front plug (14) at the end near the connector (12). The front plug (14) extends into the connector (12) and slides and seals with the connector (12). Both the valve core (16) and the front plug (14) have air holes (15) inside. The valve core (16) is connected to a rear plug (6) at the end near the nitrogen cylinder (2), and the rear plug (6) extends into the rear plug connecting cylinder (19) and slides and seals with the rear plug connecting cylinder (19). The component also includes a plug moving component for driving the rear plug (6) and the front plug (14) to move back and forth to change the unobstructed state of the liquid outlet (13) or the rear plug connecting cylinder (19).

3. The device for removing residual fire-fighting agents from pipelines of an energy storage fire-fighting system according to claim 2, characterized in that: The plug moving assembly includes an outer shell (8) connected to the working cylinder (18), and a drive motor (7) is provided on the inner wall of the outer shell (8). The output end of the drive motor (7) is fixedly connected to a lead screw (10). A ball nut seat (9) is slidably connected to the lead screw (10), and a connecting part (17) is installed on the ball nut seat (9) and connected to the valve core (16) through the connecting part (17).

4. The device for removing residual fire-fighting agents from pipelines of an energy storage fire-fighting system according to claim 3, characterized in that: The working cylinder (18) is provided with a movable groove for the connecting part (17) to move, and the valve core (16) is slidably and sealed to the inner wall of the working cylinder (18).

5. The device for removing residual fire-fighting agents from pipelines of an energy storage fire-fighting system according to claim 3, characterized in that: The exclusion assembly also includes a control valve (3) installed on the fire hydrant (4) and a central controller. The central controller establishes a two-way data connection with the control valve (3) and the drive motor (7) via Bluetooth communication protocol.

6. The device for removing residual fire-fighting agents from pipelines of an energy storage fire-fighting system according to claim 5, characterized in that: The rear plug (6) is a combination of a cone and a cylinder, with the tip of the cone facing the nitrogen cylinder (2). When the cylindrical part of the rear plug (6) is completely separated from the rear plug connecting cylinder (19), the front plug (14) completely blocks the liquid outlet hole (13).

7. The device for removing residual fire-fighting agents from pipelines of an energy storage fire-fighting system according to claim 6, characterized in that: The fire-fighting agent bottle (1) is equipped with a pressurizing pump that injects pressurized gas into the fire-fighting agent bottle (1).

8. The device for removing residual fire-fighting agents from pipelines of an energy storage fire-fighting system according to claim 7, characterized in that: The fire-fighting agent bottle (1) is also equipped with a pressure sensor inside, and the pressure sensor is also bidirectionally connected to the central controller to detect the pressure value of the pressurized gas.

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