Water-based single-pipeline fire extinguishing system

Abstract

The utility model provides a water-based single-pipeline fire extinguishing system which comprises a medicament bottle, a valve head assembly installed at a bottle opening of the medicament bottle and a medicament pipeline connected to a discharging opening of the valve head assembly, and a puncture one-way valve is arranged at the connecting position of the valve head assembly and the medicament pipeline. The starting device for starting the puncturing one-way valve and the spray head assembly for spraying the medicament are connected to the same medicament pipeline, so that the space occupied by the whole fire extinguishing pipeline can be effectively reduced. According to the utility model, the installation is convenient, additional gas filling equipment is not needed when the pipeline is installed, filling pressure is not needed after the pipeline is disassembled and assembled, and the maintenance cost can be effectively reduced.

Description

Technical Field

[0001] This utility model relates to a fire extinguishing pipeline structure, and in particular to a water-based single-pipeline fire extinguishing system. Background Technology

[0002] Water-based fire extinguishing systems are a common type of fire suppression system. They deliver the extinguishing agent from cylinders to the fire area via pipelines, and then spray it as a mist onto the fire source through nozzles for rapid extinguishing. The typical operating principle of a water-based fire extinguishing pipeline is gas-driven, consisting of an activation pipeline that delivers the ignition gas and a liquid agent pipeline. Upon receiving a high-temperature signal, the system's activation device releases the ignition gas to open the needle valve at the agent cylinder opening, allowing the agent to be delivered to the nozzles for spraying. Therefore, conventional fire extinguishing systems are often complex, requiring readjustment of the internal pressure of the agent pipelines when replacing pipes, which is detrimental to the maintenance of the entire system. Utility Model Content

[0003] To solve the above technical problems, this utility model provides a water-based single-pipeline fire extinguishing system, including a chemical bottle, a valve head assembly installed at the mouth of the chemical bottle, and a chemical pipeline connected to the outlet of the valve head assembly. The chemical pipeline is equipped with at least one set of nozzle assemblies and one set of starting devices.

[0004] A puncture check valve is provided at the connection position between the outlet of the valve head assembly and the drug pipeline. A first diaphragm is provided between the puncture check valve and the outlet. A first puncture part is provided inside the puncture check valve. The starting device provides starting gas to the puncture check valve through the drug pipeline, which drives the tip of the first puncture part to puncture the first diaphragm.

[0005] The medicine bottle is filled with a driving gas, and the pressure of the driving gas is greater than that of the starting gas. After the first diaphragm is punctured, the driving gas carries the medicine into the punctured one-way valve.

[0006] Furthermore, the valve head assembly includes a valve head body installed at the mouth of the medicine bottle via a valve head connection portion; the valve head body has a first inner cavity inside, and the valve head connection portion has a second inner cavity inside that connects the medicine bottle and the first inner cavity.

[0007] Furthermore, the valve head assembly has a first piston in the first inner cavity, and the first piston is connected to the end of the first spring; the first piston presses against the upper surface of the second inner cavity to cut off the communication between the second inner cavity and the first inner cavity.

[0008] Furthermore, the puncture check valve includes a hollow check valve tube, one end of which is threaded to the discharge port, and a first diaphragm is located at the end of the check valve tube.

[0009] Furthermore, a support ring is provided on the side of the first puncture portion away from the first diaphragm, and two sets of support springs are connected to the support ring. The other ends of the two sets of support springs are respectively connected to the axial sides of the one-way valve tube.

[0010] Furthermore, a first sealing ring is provided between the outer side of the support ring and the inner wall of the one-way valve pipe.

[0011] Furthermore, a limiting groove is recessed on the inner side of the one-way valve tube behind the support ring, and the inner diameter of the limiting groove is larger than the outer diameter of the first sealing ring.

[0012] Furthermore, the starting device includes at least one set of temperature sensing devices or one set of manual devices, and the air outlet of the starting device is connected to the drug pipeline.

[0013] Furthermore, the nozzle assembly includes a nozzle body, and a nozzle cover is provided on the outside of the nozzle body. There is a certain anti-disengagement resistance between the nozzle cover and the nozzle body. The anti-disengagement resistance is greater than the pressure of the starting gas in the agent pipeline and less than the pressure of the driving gas in the agent pipeline.

[0014] Furthermore, a second sealing ring is interference-fitted between the nozzle cover and the nozzle body. The second sealing ring is sleeved on the outside of the nozzle body and provides anti-detachment resistance between the nozzle cover and the nozzle body.

[0015] This invention provides a water-based single-pipeline fire extinguishing system, including a chemical cylinder, a valve head assembly installed at the cylinder opening, and a chemical pipeline connected to the outlet of the valve head assembly. A puncture-resistant check valve is installed at the connection point between the valve head assembly and the chemical pipeline. An activation device for activating the check valve and a spray nozzle assembly for dispensing the chemical are connected to the same chemical pipeline, effectively reducing the space occupied by the entire fire extinguishing pipeline. This invention is easy to install; the power for activation and extinguishing is provided by the activation device and the chemical cylinder respectively. No additional gas filling equipment is required when installing the chemical pipeline, and the pipeline does not need to be repressurized after disassembly, effectively reducing maintenance costs. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of a water-based single-pipe fire extinguishing system according to this utility model;

[0017] Figure 2 This is a cross-sectional view of the valve head assembly;

[0018] Figure 3 This is a three-dimensional structural diagram of the valve head assembly;

[0019] Figure 4 This is a top view of the valve head assembly;

[0020] Figure 5 This is a schematic diagram of the structure used to puncture a one-way valve;

[0021] Figure 6 This is a schematic diagram of the manual device;

[0022] Figure 7 This is an exploded diagram of the nozzle assembly;

[0023] Figure 8 This is a schematic diagram showing the connection between the nozzle body and the nozzle cover.

[0024] Figure label: Medicine bottle 1;

[0025] Valve head assembly 2, discharge port 21, first diaphragm 22, valve head body 23, first inner cavity 24, second inner cavity 25, first piston 26, first spring 27, filling port 28, plug 29, pressure relief part 210, pressure gauge 211;

[0026] Piercing one-way valve 3, first piercing part 31, one-way valve tube 32, support spring 33, first sealing ring 34, limiting groove 35, support ring 36;

[0027] Drug pipeline 4;

[0028] Nozzle assembly 5, connector 51, nozzle body 52, nozzle cover 53, second sealing ring 54;

[0029] Starting device 6, temperature sensing device 61, manual device 62, pressing head 63, fixing sleeve 64, gas storage pipe 65, gas storage chamber 66, piston chamber 67, second diaphragm 68, second puncture part 69, air outlet 610, second piston 611, second spring 612. Detailed Implementation

[0030] like Figure 1 The illustrated water-based single-pipeline fire extinguishing system includes a chemical agent bottle 1, a valve head assembly 2 installed at the mouth of the chemical agent bottle 1, and a chemical agent pipeline 4 connected to the outlet 21 of the valve head assembly 2. At least one set of nozzle assemblies 5 and one set of activation devices 6 are installed on the chemical agent pipeline 4, with each nozzle assembly 5 located at the fire extinguishing position of the system. The chemical agent bottle 1 is filled with a water-based chemical agent, and the pressure inside the chemical agent bottle 1 is increased to a higher pressure than that inside the chemical agent pipeline 4 by filling it with a motive gas. A siphon tube is installed at the outlet of the chemical agent bottle 1. During operation, the chemical agent in the chemical agent bottle 1 is transferred to the chemical agent pipeline 4 via the siphon tube under the influence of the motive gas, and then sprayed out by the nozzle assemblies 5 on the chemical agent pipeline 4 to extinguish the fire at the target location.

[0031] like Figures 2 to 4As shown, a puncture check valve 3 is provided at the connection position between the outlet 21 of the valve head assembly 2 and the medicine pipeline 4. A first diaphragm 22 is provided between the puncture check valve 3 and the outlet 21 to isolate the medicine bottle 1 and the medicine pipeline 4. The medicine remains in the medicine bottle 1 in the non-punctured state. The puncture check valve 3 has a first puncture part 31 inside. The side of the first puncture part 31 near the first diaphragm 22 is pointed. When the tip of the first puncture part 31 moves toward the first diaphragm 22, it will puncture the surface of the first diaphragm 22, so that the inside of the medicine bottle 1 is connected to the medicine pipeline 4.

[0032] The valve head assembly 2 includes a columnar valve head body 23 with a polygonal cross-section. A valve head connecting portion extends from the center of the bottom of the valve head body 23 and extends into the mouth of the medicine bottle 1. The valve head connecting portion and the medicine bottle 1 can be connected by threads, snap-fit, or other connection methods to fix the entire valve head body 23 on the bottle mouth. The valve head body 23 has a first inner cavity 24 inside, and the valve head connecting portion has a second inner cavity 25 that connects the medicine bottle 1 and the first inner cavity 24. One end of the siphon tube extends into the water-based medicine liquid in the medicine bottle 1, and the other end extends from the bottle mouth into the second inner cavity 25.

[0033] like Figure 5 As shown, the puncture check valve 3 includes a hollow check valve tube 32. One end of the check valve tube 32 is threaded to the outlet 21. A first diaphragm 22 is located at the end of the check valve tube 32, completely sealing the communication between the check valve tube 32 and the first chamber. A first puncture part 31 is disposed inside the check valve tube 32. A support ring 36 is disposed on the side of the first puncture part 31 away from the first diaphragm 22. Two sets of support springs 33 are connected to the support ring 36. The other ends of the two sets of support springs 33 are respectively connected to the axial sides of the check valve tube 32, which can apply a clamping force from both sides of the support ring 36 to maintain the position of the first puncture part 31 inside the check valve tube 32 when it is not in operation. A first sealing ring 34 is disposed between the outer side of the support ring 36 and the inner wall of the check valve tube 32. The first sealing ring 34 can increase the friction between the support ring 36 and the check valve tube 32, further restricting the movement of the first puncture part 31 relative to the check valve tube 32.

[0034] The radial dimension of the first inner cavity 24 is larger than that of the second inner cavity 25. The valve head assembly 2 has a first piston 26 in the first inner cavity 24, and the first piston 26 is connected to the end of the first spring 27. The first spring 27 has a certain preload under normal conditions, which can press the first piston 26 against the upper surface of the second inner cavity 25. The first piston 26 maintains a relatively balanced and stationary state, sealing the opening between the second inner cavity 25 and the first inner cavity 24, thereby cutting off the communication between the second inner cavity 25 and the first inner cavity 24.

[0035] The pressure in the first inner cavity 24 is greater than the pressure in the one-way valve tube 32, and the first diaphragm 22 can isolate the first inner cavity 24 and the one-way valve tube 32. When the tip of the first puncture part 31 punctures the diaphragm, the first inner cavity 24 is connected to the one-way valve tube 32, causing the pressure in the first inner cavity 24 to drop, and the pressure on the upper and lower sides of the first piston 26 is no longer balanced. Under the action of the pressure difference between the upper and lower sides, the first piston 26 moves above the discharge port 21, connecting the second inner cavity 25 to the one-way valve tube 32. The second inner cavity 25 is in a depressurized state, and the medicine bottle 1 releases kinetic gas to the one-way valve tube 32. Due to the siphon effect, the medicine flows through the first inner cavity 24 and the second inner cavity 25 to the one-way valve tube 32. At the same time, because the pressure of the kinetic gas is greater than the elastic force of the support spring 33, the kinetic gas will push the first puncture part 31 to move away from the first inner cavity 24, causing the medicine to flow out from the one-way valve tube 32, and then be transported to each nozzle assembly 5 through the medicine pipeline 4.

[0036] A limiting groove 35 is recessed on the inner side of the one-way valve tube 32 behind the support ring 36. The inner diameter of the limiting groove 35 is larger than the outer diameter of the first sealing ring 34. When the support ring 36 is pushed into the limiting groove 35, the first sealing ring 34 on the outer side of the support ring 36 will enter the limiting groove 35, thus losing its sealing function. The inner diameter of the groove edge of the limiting groove 35 on the side away from the first puncture part 31 is further set to be smaller than the outer diameter of the support ring 36, so that the limiting groove 35 can form a stepped surface, which plays a certain limiting role for the support ring 36 and prevents the first puncture part 31 from being excessively offset relative to the one-way valve tube 32 due to the push of the power gas.

[0037] The valve head body 23 has a filling port 28, a vent port, and a pressure relief port on different sides, respectively connected to the first inner cavity 24. The filling port 28 is used to fill the second inner cavity 25 with motive gas to maintain the pressure balance between the second inner cavity 25 and the first inner cavity 24, and the first piston 26 can stably maintain the seal on the second inner cavity 25. The vent port and the pressure relief port are used to discharge some of the motive gas when the pressure in the second inner cavity 25 is too high, thereby reducing the pressure in the second inner cavity 25. The vent port is an embedded hole, and a plug 29 is installed inside the vent port by means of a threaded connection. The head of the plug 29 is provided with an internal hexagonal groove. Under normal conditions, the plug 29 is sealed within the vent. When venting is required, the plug 29 is removed using an Allen wrench to release the air from the second inner cavity 25. A pressure relief part 210 is installed at the pressure relief port. One end of the pressure relief part 210 extends into the pressure relief port and is threadedly connected to it, while the other end extends out of the port, providing a handheld position for technicians. The pressure relief port functions similarly to the vent, but its adjustment is relatively fine-tuned, allowing the second inner cavity 25 to reach the target pressure. Furthermore, a pressure gauge 211 is connected to the side wall of the valve head body 23. The pressure gauge 211 is connected to the second inner cavity 25 via a pipeline to display the real-time pressure of the second inner cavity 25.

[0038] In this embodiment, the puncture of the first membrane 22 by the first puncture part 31 is controlled by the activation device 6, which includes a temperature sensing device 61 and a... Figure 6 The manual device 62 shown and the temperature sensing device 61 are based on existing technology. They include a gas outlet connected to the drug pipeline 4. Normally, the gas outlet is blocked by a temperature-sensitive glass or temperature-sensitive metal. When the target environment monitored by the temperature sensing device 61 reaches a certain temperature, the temperature-sensitive glass or temperature-sensitive metal will melt, and the starting gas in the temperature sensing device 61 will be released from the gas outlet to the drug pipeline 4, thereby pushing the first puncture part 31 to move towards the first diaphragm 22.

[0039] The principle of the manual device 62 is similar to that of the temperature sensing device 61. As shown in the figure, the manual device 62 includes a pressing head 63, a fixed sleeve 64, and a gas storage tube 65 arranged sequentially from top to bottom. The gas storage tube 65 has a connected gas storage chamber 66 and a piston chamber 67 inside its body. The fixed sleeve 64 is fitted over the upper part of the gas storage tube 65, and a second diaphragm 68 is disposed between the gas storage tube 65 and the fixed sleeve 64. A second piercing part 69 is connected to the lower end of the pressing head 63. The second piercing part 69 extends into the center of the fixed sleeve 64 and can move up and down relative to the fixed sleeve 64. When the pressing head 63 is pressed down, the second piercing part 69 pierces the second diaphragm 68.

[0040] An outlet 610, connecting to a piston chamber 67, is provided on the outer side of the gas storage tube 65. A second piston 611 is disposed inside the piston chamber 67, and the second piston 611 is connected to the end of a compression spring. The other end of the second spring 612 is connected to the bottom of the second diaphragm 68. The second spring 612 has a preload force on the second piston 611, which can press the second piston 611 tightly in the piston chamber 67, isolating the piston chamber 67 from the outlet 610. When the second puncture part 69 punctures the second diaphragm 68, the second spring 612 will drive the second piston 611 to move upward along the piston chamber 67, thereby connecting the gas storage chamber 66 with the outlet 610. The gas storage chamber 66 releases starting gas into the drug pipeline 4 through the outlet 610, thereby pushing the first puncture part 31 towards the first diaphragm 22.

[0041] Based on the description of the above structure, the working process of this embodiment includes the release of starting gas and the release of power gas: When the target location catches fire, the starting device 6 is controlled manually or by temperature sensing to release the starting gas. The starting gas is transmitted to the puncture check valve 3 through the agent pipeline 4, pushing the first puncture part 31 to puncture the first diaphragm 22, so that the first chamber is connected to the check valve tube 32; the first piston 26 located in the first chamber leaves the equilibrium state, opens the connection between the check valve tube 32 and the second chamber, and the second chamber releases power gas into the check valve tube 32, pushing the first puncture part 31 to move away from the first diaphragm 22. At the same time, the agent in the agent bottle 1 is transmitted to the agent pipeline 4 through the check valve tube 32 due to the siphon effect, and then sprayed to the target location from each nozzle assembly 5.

[0042] Figure 7 and Figure 8 This is a schematic diagram of the nozzle assembly 5, including a connector 51 connected to the drug pipeline 4 and a nozzle body 52 installed at the end of the connector 51. The connector 51 is used to fix the position of the nozzle body 52, and the drug in the drug pipeline 4 is sprayed out from the nozzle body 52. ​​One end of the connector 51 is threaded to the drug pipeline 4, and one end of the nozzle body 52 has a threaded portion that mates with the threaded portion of the connector 51. The position of the nozzle body 52 is fixed by rotating the nozzle body 52.

[0043] Since the starting device 6 and the nozzle assembly 5 of this invention are connected to the same drug pipeline 4, the gas released by the starting device 6 may leak at the nozzle assembly 5 and fail to reach the one-way valve 3. Therefore, in this embodiment, a nozzle cover 53 is further provided on the outside of the nozzle body 52. ​​The nozzle cover 53 covers the surface of the nozzle body 52, and there is a certain anti-detachment resistance between the nozzle cover 53 and the nozzle body 52. ​​The anti-detachment resistance is greater than the pressure of the starting gas in the drug pipeline 4 and less than the pressure of the driving gas in the drug pipeline 4. For example, the anti-detachment resistance is 0.5 MPa, the pressure of the starting gas is set to be less than 0.5 MPa, and the pressure of the driving gas is set to be greater than 0.5 MPa. In the activation phase of this embodiment, the pressure of the activation gas in the agent pipeline 4 is less than the anti-detachment resistance, and the nozzle cover 53 will seal the nozzle outlet of the nozzle body 52 and will not fall off the nozzle body 52; while in the extinguishing phase, the pressure of the motive gas in the agent pipeline 4 is greater than the anti-detachment resistance, and the motive gas will break through the nozzle cover 53, causing the agent to be sprayed out from the nozzle body 52.

[0044] In this embodiment, a second sealing ring 54 is interference-fitted between the nozzle cover 53 and the nozzle body 52. ​​The second sealing ring 54 is sleeved on the outside of the nozzle body 52, and provides anti-detachment resistance between the nozzle cover 53 and the nozzle body 52.

[0045] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A water-based single-pipeline fire extinguishing system, characterized in that: It includes a medicine bottle (1), a valve head assembly (2) installed at the mouth of the medicine bottle (1), and a medicine pipe (4) connected to the outlet (21) of the valve head assembly (2). The medicine pipe (4) is provided with at least one set of nozzle assembly (5) and one set of starting device (6). A piercing check valve (3) is provided at the connection position between the outlet (21) of the valve head assembly (2) and the drug pipeline (4). A first diaphragm (22) is provided between the piercing check valve (3) and the outlet (21). A first piercing part (31) is provided inside the piercing check valve (3). The starting device (6) provides starting gas to the piercing check valve (3) through the drug pipeline (4), which drives the tip of the first piercing part (31) to pierce the first diaphragm (22). The medicine bottle (1) is filled with motive gas, and the pressure of the motive gas is greater than that of the starting gas. After the first diaphragm (22) is punctured, the motive gas drives the medicine to flow into the punctured one-way valve (3).

2. The water-based single-pipeline fire extinguishing system as described in claim 1, characterized in that: The valve head assembly (2) includes a valve head body (23) installed at the mouth of the medicine bottle (1) via a valve head connection portion; the valve head body (23) has a first inner cavity (24) inside, and the valve head connection portion has a second inner cavity (25) inside that connects the medicine bottle (1) and the first inner cavity (24).

3. A water-based single-pipeline fire extinguishing system as described in claim 2, characterized in that: The valve head assembly (2) has a first piston (26) in the first inner cavity (24), and the first piston (26) is connected to the end of the first spring (27); the first piston (26) presses against the upper surface of the second inner cavity (25) to cut off the communication between the second inner cavity (25) and the first inner cavity (24).

4. A water-based single-pipeline fire extinguishing system as described in claim 1, characterized in that: The puncture check valve (3) includes a hollow check valve tube (32), one end of which is threaded to the outlet (21), and a first diaphragm (22) is located at the end of the check valve tube (32).

5. A water-based single-pipeline fire extinguishing system as described in claim 1, characterized in that: A support ring (36) is provided on the side of the first puncture part (31) away from the first diaphragm (22). Two sets of support springs (33) are connected to the support ring (36), and the other ends of the two sets of support springs (33) are respectively connected to the axial sides of the one-way valve tube (32).

6. A water-based single-pipeline fire extinguishing system as described in claim 5, characterized in that: A first sealing ring (34) is provided between the outer side of the support ring (36) and the inner wall of the one-way valve pipe (32).

7. A water-based single-pipeline fire extinguishing system as described in claim 6, characterized in that: The inner side of the one-way valve tube (32) is recessed behind the support ring (36) and a limiting groove (35) is provided. The inner diameter of the limiting groove (35) is larger than the outer diameter of the first sealing ring (34).

8. A water-based single-pipeline fire extinguishing system as described in claim 1, characterized in that: The starting device (6) includes at least one set of temperature sensing devices (61) or one set of manual devices (62), and the air outlet of the starting device (6) is connected to the medicine pipeline (4).

9. A water-based single-pipeline fire extinguishing system as described in claim 1, characterized in that: The nozzle assembly (5) includes a nozzle body (52), and a nozzle cover (53) is provided on the outside of the nozzle body (52). There is a certain anti-detachment resistance between the nozzle cover (53) and the nozzle body (52). The anti-detachment resistance is greater than the pressure of the starting gas in the agent pipeline (4) and less than the pressure of the power gas in the agent pipeline (4).

10. A water-based single-pipeline fire extinguishing system as described in claim 9, characterized in that: A second sealing ring (54) is interference-fitted between the nozzle cover (53) and the nozzle body (52). The second sealing ring (54) is sleeved on the outside of the nozzle body (52) and provides anti-detachment resistance between the nozzle cover (53) and the nozzle body (52).

Images