Automatic fire extinguishing system for engine compartment

Abstract

The utility model discloses an automatic fire extinguishing system for an engine compartment, which relates to the field of fire fighting and comprises a medicament bottle, the top of the medicament bottle is communicated with a multifunctional valve head, and a medicament spraying part on the side wall of the multifunctional valve head is communicated with a plurality of atomizing nozzles through medicament pipelines. A temperature detection puncture part on the side wall of the multifunctional valve head is connected to an outlet part of the aggregation one-way valve through a power transmission pipeline, and a plurality of inlet parts of the aggregation one-way valve are further connected with a plurality of automatic temperature detection starting devices and a manual starting device through power transmission pipelines. According to the automatic fire extinguishing system for the engine bin, the power transmission pipeline is free of electricity and pressure, installation is convenient, the temperature detection speed is higher, gas filling equipment is not needed in the installation process, the maintenance cost is reduced, and gas filling is not needed when the power transmission pipeline is installed again after being disassembled and assembled.

Description

Technical Field

[0001] This utility model relates to the field of fire protection, specifically to an automatic fire extinguishing system for engine compartments. Background Technology

[0002] Existing automatic fire suppression systems for engine compartments typically use a continuously pressurized gas activation method for their temperature detection pipelines. When maintenance is required, the pressure within the pipelines due to this continuous pressurization process poses a risk of accidental discharge of the fire extinguishing agent during disassembly. Even if operators adhere to usage guidelines, the pipelines still require refilling after disassembly and reinstallation. Therefore, a novel automatic fire suppression system is needed that abandons the traditional continuously pressurized filling method, solves the problems of accidental agent discharge and refilling during pipeline disassembly and reinstallation, and achieves automation and safety for the entire fire suppression system. Utility Model Content

[0003] To address the aforementioned technical problems, this utility model provides an automatic fire extinguishing system for engine compartments, which solves the automation and safety issues associated with automatic fire extinguishing systems for engine compartments.

[0004] The technical solution of this utility model is: an automatic fire extinguishing system for engine compartment, comprising: a chemical bottle, the top of which is connected to a multi-functional valve head, the chemical spraying part on the side wall of the multi-functional valve head being connected to several atomizing nozzles through a chemical pipeline, the temperature piercing part on the side wall of the multi-functional valve head being connected to the outlet of a polymer one-way valve through a power transmission pipeline, and the multiple inlets of the polymer one-way valve being connected to several automatic temperature detection start devices and a manual start device through a power transmission pipeline.

[0005] Furthermore, the chemical pipeline includes a main pipeline and a U-shaped branch pipeline, with six atomizing nozzles installed on the U-shaped branch pipeline.

[0006] Furthermore, the atomizing nozzle has an orifice diameter of 1-2mm to ensure the flow rate and atomization effect of the agent.

[0007] Furthermore, the inner diameter of the agent pipeline is 8-10mm, and the material is 304 stainless steel. The 8-10mm inner diameter ensures a better spray flow rate.

[0008] Furthermore, the power transmission pipeline is made of flame-retardant material with an inner diameter of 4-8mm. The appropriate inner diameter of the pipeline ensures that the power loss inside the power transmission pipeline is minimal.

[0009] Furthermore, the multi-functional valve head includes: a valve head body that is spirally connected to the fire-fighting agent bottle, a valve head cover that is fastened to the valve head body, and a pressure gauge section, a filling section, a pressure relief section, and a manual puncture section on the side wall of the valve head body.

[0010] Furthermore, the valve head body has a first inner cavity and a second inner cavity that are interconnected inside. A spring is fixed between the conical clamping member and the valve head cover. A pressure balance through hole is opened at the axial position of the conical clamping member, and the pressure balance through hole is connected to the second inner cavity.

[0011] Furthermore, the automatic temperature detection and activation device includes: a first gas storage device, which has a first air inlet on one side and a first air outlet on the other side. A hollow base is also connected to the upper part of the first gas storage device. Several flame detection windows are opened on the side wall of the hollow base. A temperature control release device is coaxially arranged on the upper side of the first air outlet of the first gas storage device and the lower part of the hollow base. A locking nut is connected to the upper part of the hollow base. A temperature sensing glass column is installed between the temperature control release device and the locking nut. A pressure release outlet is provided on the side wall of the first gas storage device.

[0012] Furthermore, the manual start device includes: a second gas storage device, which has a second air inlet on one side and a second air outlet on the other side. The second air outlet side of the second gas storage device has a cavity for placing a second piston block and an elastic element fixedly connected to the second piston block. A gas release port is opened on the side wall of the second gas storage device.

[0013] The beneficial technical effects of this utility model are:

[0014] The automatic fire extinguishing system for engine compartment proposed in this utility model has no electricity or pressure in the power transmission pipeline, which makes it easy to install, has a faster temperature detection speed, does not require gas filling equipment during installation, reduces maintenance costs, and does not require gas filling after the power transmission pipeline is disassembled and reinstalled. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the multifunctional valve head of this utility model. Figure 1 ;

[0017] Figure 3 This is a schematic diagram of the structure of the multifunctional valve head of this utility model. Figure 2 ;

[0018] Figure 4 This is a schematic diagram of the structure of the multifunctional valve head of this utility model. Figure 3 ;

[0019] Figure 5 yes Figure 4 Schematic diagram of the AA-direction structure;

[0020] Figure 6 This is a bottom view schematic diagram of the multifunctional valve head structure of this utility model;

[0021] Figure 7 yes Figure 6 Schematic diagram of the BB-oriented structure;

[0022] Figure 8 This is a schematic diagram of the automatic temperature detection and start-up device of this utility model;

[0023] Figure 9 yes Figure 8 Schematic diagram of the EE structure;

[0024] Figure 10 This is a schematic diagram of the manual start device of this utility model;

[0025] Figure 11 yes Figure 10 Schematic diagram of the DD-direction structure;

[0026] In the picture,

[0027] 1. Medicine bottle; 2. Multifunctional valve head; 3. Medicine pipeline; 4. Atomizing nozzle; 5. Power transmission pipeline; 6. Polymerization check valve; 7. Automatic temperature detection and start device; 8. Manual start device;

[0028] 20. Valve head body; 21. Valve head cover; 22. Agent spraying section; 23. Temperature sensing puncture section; 24. Pressure gauge section; 25. Filling section; 26. Pressure relief section; 27. Manual puncture section; 201. First inner cavity; 202. Second inner cavity; 203. Conical clamping element; 204. Spring; 205. Air pressure balance through hole; 2011. Guide groove;

[0029] 231. First locking block; 232. Stepped through hole; 2321. First through hole; 2322. Second through hole; 233. First diaphragm; 234. First piston block; 235. First piercing rod; 236. First piercing needle;

[0030] 271. Second locking block; 272. Third through hole; 273. Second diaphragm; 274. Second piercing rod; 275. Second piercing needle; 276. Locking hole; 277. Locking pin;

[0031] 28. Vent section; 281. Vent hole; 282. Plug;

[0032] 71. First gas storage device; 72. First gas inlet; 73. First gas outlet; 74. Hollow base; 75. Flame detection window; 76. Temperature control release device; 77. Locking nut; 78. Temperature sensing glass column; 79. Pressure release outlet;

[0033] 81. Second gas storage device; 82. Second air inlet; 83. Second air outlet; 84. Second piston block; 85. Elastic element; 86. Gas release port; 87. First base; 88. Third locking block; 89. Fourth through hole; 891. Third piercing rod; 892. Third piercing needle; 893. Third diaphragm; 894. Locking pin hole; 895. Fixing pin. Detailed Implementation

[0034] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0035] See Figure 1-11 This specific embodiment discloses an automatic fire suppression system for engine compartments, including:

[0036] The medicine bottle 1 has a multi-functional valve head 2 connected to its top. The medicine spraying part 22 of the multi-functional valve head 2 is connected to several atomizing nozzles 4 through a medicine pipe 3. The temperature sensing piercing part 23 of the multi-functional valve head 2 is connected to the outlet of the polymerization check valve 6 through a power transmission pipe 5. Several automatic temperature sensing start devices 7 and a manual start device 8 are also connected to the multiple inlets of the polymerization check valve 6 through the power transmission pipe 5.

[0037] In this specific embodiment, the polymer one-way valve 6 operates on the same principle as the one-way valves on the market, and will not be elaborated further here. The polymer one-way valve can only transmit and start in one direction. When any automatic temperature sensing start device or emergency manual device releases gas, other non-activated automatic temperature sensing start devices or emergency manual devices, based on the function of the one-way valve, will not be able to release the gas pressure in the medicine bottle from other non-activated one-way valves, thus avoiding power loss.

[0038] More specifically, the agent pipeline 3 includes a main pipeline 31 and a U-shaped branch pipeline 32, with six atomizing nozzles installed on the U-shaped branch pipeline.

[0039] More specifically, the aperture of the atomizing nozzle 4 is 1-2 mm, preferably 1.3 mm, to ensure the flow rate and atomization effect of the agent.

[0040] More specifically, the inner diameter of the agent pipe 3 is 8-10mm, and the material is 304 stainless steel. The inner diameter of 8-10mm ensures a better spray flow rate.

[0041] More specifically, the power transmission pipe 5 is made of flame-retardant material with an inner diameter of 4-8mm, preferably 6mm. The appropriate inner diameter of the pipe ensures that the power loss inside the power transmission pipe is small, while ensuring that the automatic temperature detection and start-up device can quickly release the flow rate when a fire occurs.

[0042] More specifically, the multi-functional valve head 2 includes: a valve head body 20 spirally connected to the fire-fighting agent bottle 1, and a valve head cover 21 fastened to the valve head body. The valve head body 20 has an agent spraying part 22, a temperature detection puncture part 23, a pressure gauge part 24, a filling part 25, a pressure relief part 26, and a manual puncture part 27 on its side wall. The valve head body 20 has a first inner cavity 201 and a second inner cavity 202 that are interconnected. The inner diameter of the first inner cavity 201 is larger than that of the second inner cavity 202. A conical pressing member 203 is provided in the first inner cavity 201. The conical pressing member 203 abuts against the top of the second inner cavity 202. A spring 204 is fixed between the conical pressing member 203 and the valve head cover 21. A pressure balance through hole 205 is opened at the axial position of the conical pressing member 203. The pressure balance through hole 205 is connected to the second inner cavity 202.

[0043] In this specific embodiment, the pressure gauge section 24, filling section 25, and pressure relief section 26 provided on the side wall of the valve head body are respectively connected to the second inner cavity 202 through the first internal conduction path (not shown in the figure), the manual puncture section 27 and the temperature probe puncture section 23 are respectively connected to the guide groove 2011 provided at the top of the first inner cavity 201 through the second internal conduction path (not shown in the figure), and the agent spraying section 22 is connected to the lower part of the first inner cavity 201 through the third internal conduction path (not shown in the figure).

[0044] More specifically, the inner and outer surfaces of the second inner cavity 202 are both threaded, and the medicine bottle 1 is provided with a siphon tube, which is threaded to the lower part of the second inner cavity 202. The medicine bottle 1 is threadedly tightened to the outer end face of the second inner cavity 202.

[0045] In this specific embodiment, a pressure balance through hole 205 is opened at the axial position of the conical clamping member 203. This pressure balance through hole 205 allows the first inner cavity 201 and the second inner cavity 202 to be connected through the pressure balance through hole 205 when the multi-functional valve head is sealed. The conical clamping member 203 can abut against the top of the second inner cavity 202 under the action of the spring 204 to prevent the agent from entering the first inner cavity 201 and causing accidental spraying.

[0046] The pressure gauge 24 can characterize the pressure inside the medicine bottle; when the pressure inside the bottle is too high, opening the pressure relief part 26 can reduce the pressure inside the bottle and protect the medicine bottle; when the diaphragm is punctured by the manual puncture part 27 or the temperature probe puncture part 23, the air pressure in the space above the conical clamping member 203 in the first inner cavity 201 is significantly reduced, the conical clamping member 203 is pushed upward, and the medicine in the medicine bottle flows upward and is sprayed to the designated area through the medicine spraying part.

[0047] Furthermore, the way in which the manual puncture part 27 and the temperature probe puncture part 23 are connected to the top guide groove 2011 of the first inner cavity 201 ensures that after the manual puncture part 27 and the temperature probe puncture part 23 puncture the membrane, the air pressure in the upper space of the first inner cavity 201 is significantly reduced. Therefore, the pressure inside the medicine bottle 1 causes the conical clamping member 203 to move upward, and causes the medicine to flow upward to the lower part of the first inner cavity 201, and then flow through the third internal guiding path to the medicine spray outlet for spraying.

[0048] More specifically, the valve head body 20 also has a venting section 28 on its side wall. The vent is connected to a vent hole 281 on the bottom end face of the valve head body via a fourth internal guiding path (not shown in the figure). A plug 282 is sealed to the vent hole. The venting section is designed to release pressure from the medicine bottle when operating in high-altitude terrain or in case of incorrect filling, where the pressure inside the medicine bottle increases significantly. It is worth noting that the pressure relief section and the venting section are different in that the pressure relief section is used to protect the medicine bottle and has a preset constant pressure relief value, while the venting section is used to release pressure at any value.

[0049] More specifically, the manual puncture part 27 includes: a second locking block 271 threadedly connected to the valve head body 20; a third through hole 272 provided in the second locking block 271; a second diaphragm 273 provided at the end of the third through hole 272; a second puncture rod 274 inserted into the third through hole 272 with clearance fit; a second puncture needle 275 provided at the front end of the second puncture rod 274; a locking hole 276 coaxially opened between the second puncture rod 274 and the second locking block 271 in the radial position; and a locking pin 277 inserted into the locking hole 276.

[0050] More specifically, the temperature probe piercing part 23 includes: a first locking block 231 threadedly connected to the valve head body 20, the first locking block 231 having a stepped through hole 232, the stepped through hole 232 having a first through hole 2321 and a second through hole 2322 communicating with each other, the end of the second through hole 2322 having a first diaphragm 233, the inner diameter of the first through hole 2321 being larger than the inner diameter of the second through hole 2322, a first piston block 234 being inserted into the first through hole 2321 with clearance fit, the first piston block 234 having a first piercing rod 235 embedded and fixedly connected inside, the end of the first piercing rod 235 having a first piercing needle 236.

[0051] In this specific embodiment, the temperature probe piercing part is connected to the automatic detection starter. When a fire occurs in the outside, the detection starter generates instantaneous high pressure. The instantaneous high pressure pushes the first piston block of the temperature probe piercing part to move inward and forward. After the first piercing needle connected to it passes through the second through hole and pierces the first diaphragm, the instantaneous pressure in the medicine bottle pushes the first piston block to move backward. Due to the effect of the gap fit, some gas overflows, which significantly reduces the gas pressure in the medicine bottle. The conical top clamping part is lifted, and the multi-functional valve head is activated.

[0052] Alternatively, in an emergency, such as when the temperature probe cannot pierce the first diaphragm, the locking pin can be pulled out and the second locking block pushed forward. The second needle connected to the second locking block will penetrate the second diaphragm, which can also significantly reduce the air pressure inside the multi-functional valve head, thereby enabling the manual activation of the multi-functional valve head in an emergency.

[0053] More specifically, the automatic temperature detection and activation device 7 includes: a first gas storage device 71, a first air inlet 72 on one side and a first air outlet 73 on the other side, a hollow base 74 internally connected to the upper part of the first gas storage device 71, a plurality of flame detection windows 75 opened on the side wall of the hollow base 74, a temperature control release device 76 coaxially arranged on the upper side of the first air outlet of the first gas storage device 71 and the lower part of the hollow base 74, a locking nut 77 internally connected to the upper part of the hollow base 74, a temperature sensing glass column 78 installed between the temperature control release device 76 and the locking nut 77, and a pressure release outlet 79 provided on the side wall of the first gas storage device 71.

[0054] In this specific embodiment, the flame detection window 75 is a flame intrusion port used to sense the real-time temperature in the fire environment. When the ambient temperature sensed by the temperature sensing glass column 78 reaches the set sensing temperature, the glass instantly shatters. As the bottom of the temperature control release device 76 loses its locking function, the high-pressure gas in the first gas storage device 71 pushes the temperature control release device 76 downwards instantly.

[0055] More specifically, the top of the temperature-sensing glass column 78 is pointed, which facilitates insertion into the hollow cylinder 761 to complete the positioning of the top of the temperature-sensing glass column 78.

[0056] More specifically, the first gas storage device 71 is filled with high-pressure inert gas or high-pressure carbon dioxide gas, and the specific gas pressure is flexibly set according to the actual application scenario.

[0057] In this specific embodiment, the automatic temperature detection and activation device is connected to the multi-functional valve head via a polymer check valve. In the event of a fire, the automatic detection and activation device utilizes the shattering of the temperature-sensing glass column to cause the high-pressure gas in the first gas storage device to push the temperature control release device to move upward instantaneously, thereby causing the high-pressure gas to be discharged from the pressure release outlet. The instantaneously discharged gas causes the multi-functional valve head to open stably, thereby safely discharging the fire extinguishing agent.

[0058] More specifically, the manual start device 8 includes: a second gas storage device 81, a second air inlet 82 on one side and a second air outlet 83 on the other side, a cavity on the second air outlet side of the second gas storage device 81 for placing a second piston block 84 and an elastic member 85 fixedly connected to the second piston block, and a gas release port 86 is opened on the side wall of the second gas storage device.

[0059] In addition, the end of the second gas storage device 81 is threadedly connected to a first base 87, and the first base 87 is threadedly connected to a third locking block 88. The third locking block 88 is provided with a fourth through hole 89, and a third piercing rod 891 is inserted into the fourth through hole 89 with clearance fit. The front end of the third piercing rod 891 is provided with a third needle 892, and the front end of the third needle is provided with a third diaphragm 893. Furthermore, the third piercing rod 891 and the third locking block 88 are coaxially provided with a locking pin hole 894, and a fixing pin 895 is inserted into the locking pin hole 894.

[0060] In this specific embodiment, the manual start device serves as a backup for the automatic temperature detection start device. In case of an emergency, such as when the automatic temperature detection start device fails to start the multi-functional valve head, the operator can pull out the fixing pin and push the third locking block forward. The third needle connected to the third locking block penetrates the third diaphragm, and the second piston block on the outlet side pops upward due to loss of support, causing the high-pressure gas in the gas storage device to overflow through the gas release port, thereby activating the corresponding one-way valve and achieving the effect of activating the multi-functional valve head. This is suitable for emergency situations where the automatic temperature detection start device fails to release gas.

[0061] The working principle of this utility model:

[0062] The automatic fire extinguishing system for engine compartments proposed in this utility model connects a multi-functional valve head 2 to the top of the agent bottle 1, and further includes an agent pipeline 3, several atomizing nozzles 4, a power transmission pipeline 5, a polymerization check valve 6, an automatic temperature detection and activation device 7, and a manual activation device 8. When a fire occurs in the engine compartment, the temperature-sensing glass column in the automatic temperature detection and activation device 7 ruptures. The high-pressure gas in the gas storage device opens the corresponding valve of the polymerization check valve through the power transmission pipeline 5. The high-pressure gas punctures the diaphragm of the temperature-sensing part in the multi-functional valve head, allowing the multi-functional valve head to open. The fire extinguishing agent flows from the agent spray section of the multi-functional valve head through the agent pipeline to several atomizing nozzles, thereby accurately releasing the agent and extinguishing the fire.

[0063] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An automatic fire suppression system for engine compartments, characterized in that, include: A medicine bottle (1) has a multi-functional valve head (2) connected to its top. The medicine spraying part (22) on the side wall of the multi-functional valve head (2) is connected to several atomizing nozzles (4) through a medicine pipe (3). The temperature probing piercing part (23) on the side wall of the multi-functional valve head (2) is connected to the outlet of a polymerization check valve (6) through a power transmission pipe (5). Several inlets of the polymerization check valve (6) are also connected to several automatic temperature probing start devices (7) and a manual start device (8) through a power transmission pipe (5).

2. The automatic fire extinguishing system for engine compartments according to claim 1, characterized in that, The agent pipeline (3) includes a main pipeline (31) and a U-shaped branch pipeline (32), with six atomizing nozzles on the U-shaped branch pipeline (32).

3. The automatic fire extinguishing system for engine compartments according to claim 1, characterized in that, The aperture of the atomizing nozzle (4) is 1-2 mm.

4. The automatic fire extinguishing system for engine compartments according to claim 1, characterized in that, The inner diameter of the pharmaceutical pipeline (3) is 8-10 mm.

5. The automatic fire extinguishing system for engine compartments according to claim 1, characterized in that, The power transmission pipe (5) is made of flame-retardant material and has an inner diameter of 4-8mm.

6. The automatic fire extinguishing system for engine compartments according to claim 1, characterized in that, The multi-functional valve head (2) includes: a valve head body (20) that is spirally connected to the fire-fighting agent bottle (1), a valve head cover (21) that is fastened to the valve head body, and a pressure gauge part (24), a filling part (25), a pressure relief part (26), and a manual puncture part (27) on the side wall of the valve head body (20).

7. The automatic fire extinguishing system for engine compartments according to claim 6, characterized in that, The valve head body (20) has a first inner cavity (201) and a second inner cavity (202) that are interconnected. A spring (204) is fixed between the conical clamping member (203) and the valve head cover (21). A pressure balance through hole (205) is opened at the axial position of the conical clamping member (203), and the pressure balance through hole (205) is connected to the second inner cavity (202).

8. The automatic fire extinguishing system for engine compartments according to claim 1, characterized in that, The automatic temperature detection start device (7) includes: a first gas storage device (71), a first air inlet (72) on one side and a first air outlet (73) on the other side, a hollow base (74) connected to the upper part of the first gas storage device (71), a number of flame detection windows (75) opened on the side wall of the hollow base (74), a temperature control release device (76) coaxially arranged on the upper side of the first air outlet of the first gas storage device (71) and the lower part of the hollow base (74), a locking nut (77) connected to the upper part of the hollow base (74), a temperature sensing glass column (78) installed between the temperature control release device (76) and the locking nut (77), and a pressure release outlet (79) provided on the side wall of the first gas storage device (71).

9. The automatic fire extinguishing system for engine compartments according to claim 1, characterized in that, The manual start device (8) includes: a second gas storage device (81), a second air inlet (82) on one side and a second air outlet (83) on the other side, a cavity on the second air outlet side of the second gas storage device (81), the cavity being used to place a second piston block (84) and an elastic member (85) fixedly connected to the second piston block, and a gas release port (86) is opened on the side wall of the second gas storage device.

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