A perfluorohexanone foam extinguishing system

Abstract

The application discloses a perfluorohexanone foam fire extinguishing system, which comprises a foam proportioning unit, a perfluorohexanone injection unit, a compressed air injection unit and a foam generating unit which are connected in sequence. Fire-fighting water is fed into the foam proportioning unit. The perfluorohexanone injection unit is composed of a perfluorohexanone storage device, a pressure reducing device, a flow control valve and a perfluorohexanone proportioning mixer which are connected in sequence. The compressed air injection unit is connected to the liquid outlet end of the perfluorohexanone proportioning mixer. The foam proportioning unit is connected to the liquid inlet end of the perfluorohexanone proportioning mixer. The foam generating unit generates foam and applies the foam to a fire scene. The perfluorohexanone foam fire extinguishing system has a far higher fire extinguishing efficiency for low-boiling-point flammable liquids and oil such as petroleum than ordinary air foam, and can perfectly replace the existing heptafluoropropane foam fire extinguishing system. The perfluorohexanone foam fire extinguishing system is in a blank stage in China, and has a huge application space.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fire extinguishing technology, in particular to a perfluorohexanone foam fire extinguishing system. BACKGROUND

[0002] Perfluorohexanone extinguishing agent is a new type of extinguishing agent, and its extinguishing principle is mainly that perfluorohexanone can quickly decompose and release a large amount of fluoride ions and free radicals when it contacts with the flame in the injection of the fire, and these substances can react with the chain reaction free radicals generated by the fire to inhibit the chemical reaction of the flame, so that the flame is quickly extinguished, and the purpose of extinguishing the fire is achieved. It can be applied to gas fire, liquid fire, solid fire and other fire scenes.

[0003] Compared with the traditional extinguishing agent, the perfluorohexanone extinguishing agent has the following advantages: 1. High extinguishing efficiency; 2. Short extinguishing time; 3. Small dosage; 4. Good extinguishing effect; 5. Long storage time; 6. No pollution to the environment.

[0004] At present, there is no relevant national standard for perfluorohexanone foam fire extinguishing system. This system can make up for the blank of domestic related technology. SUMMARY

[0005] In order to achieve the above purpose, the present application discloses a perfluorohexanone foam fire extinguishing system, comprising: foam proportioning unit, perfluorohexanone injection unit, compressed air injection unit and foam generating unit connected in sequence, fire water is fed into the foam proportioning unit, the perfluorohexanone injection unit is composed of perfluorohexanone storage device, pressure reducing device, flow control valve and perfluorohexanone proportioning mixer connected in sequence, the compressed air injection unit is connected to the liquid outlet end of the perfluorohexanone proportioning mixer, the foam proportioning unit is connected to the liquid inlet end of the perfluorohexanone proportioning mixer, and the foam generating unit generates foam and acts on the fire scene.

[0006] Preferably, the foam proportioning unit is composed of foam stock tank, pressurized proportioning device and foam proportioning device.

[0007] Preferably, the foam proportioning device is composed of any one or a combination of pressure type proportioning device, balance type proportioning device, mechanical pump type proportioning device or metering injection type proportioning device.

[0008] Preferably, the perfluorohexanone proportioning mixer is composed of integrated perfluorohexanone proportioning mixer and Venturi tube proportioning mixer.

[0009] Preferably, the fire-fighting water successively passes through the foam proportioning device, the perfluorocyclohexanone proportioning device, the compressed air injection unit and the foam generating unit, forms the foam mixture through the foam proportioning device, forms the perfluorocyclohexanone foam mixture through the perfluorocyclohexanone proportioning device, forms the perfluorocyclohexanone air foam mixture of a preset proportion after passing through the compressed air injection unit, and is injected into the area where the fire occurs through the foam generating unit, so as to achieve the purpose of fire extinguishing.

[0010] Preferably, the perfluorocyclohexanone storage device comprises: a plurality of perfluorocyclohexanone storage tanks connected with a pipeline with a check valve I and a pneumatic or electric valve with a pressure reducing device, wherein the pressure reducing device is a pressure reducing valve group, and a safety valve is further connected in bypass on the pipeline with the check valve I and the pneumatic or electric valve.

[0011] Preferably, the foam generating unit comprises:

[0012] A foam chamber located near the protected object, a connecting pipeline with an inlet connecting flange connected with the foam chamber, and the perfluorocyclohexanone air foam mixture is sent into the connecting pipeline, and the gas-liquid inlet is located at the end of the connecting pipeline extending into the foam chamber.

[0013] A foam generator cover installed at the end of the foam chamber away from the connecting pipeline.

[0014] A foam outlet located at the side end of the foam chamber.

[0015] Preferably, the compressed air injection unit comprises:

[0016] A compressed air proportioning device connected between the perfluorocyclohexanone proportioning device and the foam generating unit.

[0017] An air compressor connected to the compressed air proportioning device.

[0018] Preferably, a gas pressure storage tank, a check valve II and a pressure reducing valve I are successively connected between the air compressor and the compressed air proportioning device.

[0019] Preferably, it further comprises:

[0020] A fire monitoring unit connected in linkage with the foam proportioning unit, the perfluorocyclohexanone injection unit, the compressed air injection unit and the foam generating unit, a smoke-sensing fire detector installed near the protected object for detecting the fire information near the protected object, and the smoke-sensing fire detector is connected with the fire monitoring unit. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the drawings needed to be used in the specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0022] Figure 1 Workflow diagram of the present application;

[0023] Figure 2 Perfluorohexanone injection unit flowchart of the present application;

[0024] Figure 3 Foam generating unit structure diagram of the present application;

[0025] Figure 4 Compressed air injection unit flowchart of the present application;

[0026] Figure 5 Compressed air proportional mixer sectional view of the present application;

[0027] Figure 6 Vortex air conveying unit sectional view of the present application;

[0028] Figure 7 Hollow rotating drum sectional view of the present application;

[0029] Figure 8 Hollow rotating drum inner bottom view of the present application;

[0030] Figure 9 Angle adjustment assembly sectional view of the present application;

[0031] Figure 10 Horizontal movement driving assembly and belt driving assembly structure diagram of the present application.

[0032] Figure: 1. Foam proportioning unit; 2. Perfluorohexanone injection unit; 3. Compressed air injection unit; 4. Foam generating unit; 8. Perfluorohexanone storage device; 9. Pressure reducing device; 10. Flow control valve; 11. Perfluorohexanone proportioning mixer; 10. Flow control valve; 11. Perfluorohexanone proportioning mixer; 12. Inlet connecting flange; 13. Gas-liquid inlet; 14. Foam generator cover; 15. Foam outlet; 16. Compressed air proportioning mixer; 17. Air compressor; 18. Perfluorohexanone storage tank; 19. Check valve one; 21. Box; 22. Water chamber; 23. Gas-liquid mixing chamber; 24. Water inlet; 25. Water outlet; 26. Gas-liquid inlet pipe; 27. Air guide pipe part; 28. Motor; 29. Rotating vane; 31. Shell; 32. Air inlet; 33. Air inlet; 34. Hollow rotating cylinder; 35. Vortex air duct; 36. Plane; 37. Vortex plate; 38. Center rotating motor; 41. Upper cover body; 42. Lower cover body; 43. Stator; 44. Rotor; 45. Center rotating shaft; 46. Turntable; 47. Conveyor belt; 48. Slide groove one; 49. Slide block one; 40. Shaft one; 51. Pulley one; 52. Shaft two; 53. Bevel gear; 54. Storage groove; 55. Rotating rod; 56. Slide groove two; 57. Slide block two; 58. Return spring; 59. Pulley two; 50. Locking plate; 61. Locking ring; 62. Wedge-shaped jacking block; 63. Oil path one; 64. Oil path two; 65. Containing chamber. DETAILED DESCRIPTION

[0033] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0034] EMBODIMENT

[0035] The present application will be further described below in conjunction with the drawings.

[0036] As Figures 1 to 7 shown, the perfluorohexanone foam fire extinguishing system provided by the embodiment includes: foam proportioning unit 1, perfluorohexanone injection unit 2, compressed air injection unit 3 and foam generating unit 4 connected in sequence. Firefighting water is fed into the foam proportioning unit 1. The perfluorohexanone injection unit 2 is composed of perfluorohexanone storage device 8, pressure reducing device 9, flow control valve 10 and perfluorohexanone proportioning mixer 11 connected in sequence. The compressed air injection unit 3 is connected to the liquid outlet end of the perfluorohexanone proportioning mixer 11. The foam proportioning unit 1 is connected to the liquid inlet end of the perfluorohexanone proportioning mixer 11. The foam generating unit 4 generates foam and acts on the fire scene.

[0037] The working principle and beneficial effects of the above technical solutions are:

[0038] The present application discloses a kind of perfluorohexanone foam fire extinguishing system, fire water is sent into foam proportioning unit 1, foam proportioning unit 1 mixes fire water and foam stock solution, forms foam mixed solution, then is sent into perfluorohexanone proportioning mixer 11, then perfluorohexanone extinguishing agent in perfluorohexanone storage device 8 is reduced in pressure by pressure reducing device 9, after adjusting flow by flow control valve 10, injects into perfluorohexanone proportioning mixer 11, has formed perfluorohexanone foam mixed solution, compressed air injection unit 3 injects compressed air into perfluorohexanone foam mixed solution, forms perfluorohexanone air foam mixed solution, perfluorohexanone air foam mixed solution is transported to the foam generating unit 4 at special fire scene or use end by pipe network and carries out fire extinguishing.The present application provides a kind of perfluorohexanone foam fire extinguishing system, and the fire extinguishing efficiency for low-boiling-point flammable liquid and oil such as petroleum is much higher than ordinary air foam, and can perfectly replace existing heptafluoropropane foam fire extinguishing system.The perfluorohexanone foam fire extinguishing system is in blank stage in China, and application space is huge.

[0039] After test, the foaming multiple of perfluorohexanone foam fire extinguishing system foam is ≥20 times, and 25% liquid separation time is ≥10 min, which is greatly improved compared with the foaming multiple of ordinary foam fire extinguishing system, which is ≥5 times, and 25% liquid separation time is ≥5 min;In n-pentane or propylene oxide oil pan fire test, after starting system to spray foam after igniting fuel and pre-burning 60s, foam layer completely covers burning surface when test is carried out to 1 min, and flame is completely extinguished, and fuel covered by foam does not relight, candle burn and flash after fire extinguishing.The fire extinguishing efficiency of the system is basically same as that of heptafluoropropane foam fire extinguishing system, and the fire extinguishing efficiency for low-boiling-point flammable liquid and oil such as petroleum is much higher than ordinary air foam.

[0040] In one embodiment, the foam proportioning unit 1 is composed of foam stock solution storage tank, pressurized proportioning device and foam proportioning device.

[0041] In one embodiment, the foam proportioning device is composed of any one or more combinations of pressure type proportioning device, balanced type proportioning device, mechanical pump type proportioning device or metering injection type proportioning device.

[0042] In one embodiment, the perfluorohexanone proportioning mixer 11 is composed of integrated perfluorohexanone proportioning mixer and venturi proportioning mixer.

[0043] In one embodiment, the fire-fighting water sequentially passes through the foam proportioning device, the perfluorohexone proportioning device 11, the compressed air injection unit 3 and the foam generating unit 4, forms the foam mixture through the foam proportioning device, forms the perfluorohexone foam mixture through the perfluorohexone proportioning device 11, forms the perfluorohexone air foam mixture of a preset proportion after passing through the compressed air injection unit 3, and is injected into the area where the fire occurs through the foam generating unit 4, so as to achieve the purpose of fire extinguishing.

[0044] In one embodiment, the perfluorohexone storage device 8 comprises a plurality of perfluorohexone storage tanks 18, which are connected with the pressure reducing device 9 through the pipeline with the check valve I 19 and the pneumatic or electric valve 5, the pressure reducing device 9 is a pressure reducing valve group, and the pipeline with the check valve I 19 and the pneumatic or electric valve 1 is also connected with the safety valve 6 in bypass.

[0045] In one embodiment, the foam generating unit 4 comprises:

[0046] The foam chamber 7 located near the protected object, the connecting pipeline with the inlet connecting flange 12 is connected with the foam chamber 7, the perfluorohexone air foam mixture is sent into the connecting pipeline, and the gas-liquid inlet 13 is located at the end of the connecting pipeline extending into the foam chamber 38;

[0047] The foam generator cover 14 is installed at the end of the foam chamber 7 away from the connecting pipeline;

[0048] The foam outlet 15 is located at the side end of the foam chamber 7.

[0049] In one embodiment, the compressed air injection unit 3 comprises:

[0050] The compressed air proportioning device 16 is connected between the perfluorohexone proportioning device 11 and the foam generating unit 4;

[0051] The air compressor 17 is connected to the compressed air proportioning device 16.

[0052] In one embodiment, the air compressor 17 and the compressed air proportioning device 16 are sequentially connected with the air pressure storage tank 68, the check valve II 66 and the pressure reducing valve I 67.

[0053] In one embodiment, it further comprises:

[0054] The fire monitoring unit is connected to the foam proportioning unit 1, the perfluorohexone injection unit 2, the compressed air injection unit 3 and the foam generating unit 4, the smoke-sensing fire detector is installed near the protected object, is used for detecting the fire information near the protected object, and is connected with the fire monitoring unit.

[0055] In one embodiment, the compressed air proportional mixer 16 comprises:

[0056] a box 21, a water chamber 22 and a gas-liquid mixing chamber 23 being adjacent and communicating in the box 21;

[0057] a water inlet 24 and a water outlet 25, the water inlet 24 and the water outlet 25 being arranged at the side end of the box 21, the water inlet 24 being communicated in the water chamber 22, the water outlet 25 being communicated in the gas-liquid mixing chamber 23, the water outlet 25 being connected with the foam generating unit 4 through a pipeline;

[0058] a gas-liquid guide pipe 26, the gas-liquid guide pipe 26 being connected between the water inlet 24 and the perfluorohexone proportional mixer 11;

[0059] a gas guide pipe part 27, the gas guide pipe part 27 being bypassed and arranged on the gas-liquid guide pipe 26;

[0060] a motor 28, the motor 28 being arranged on the surface of the box 21, the output end of the motor 28 being inserted into the water chamber 22, and a rotating vane 29 being arranged on the output end of the motor 28.

[0061] The working principle and beneficial effects of the above technical solution are:

[0062] The motor 28 drives the rotating vane 29 to rotate, the perfluorohexone foam mixed liquid and gas are drawn into the water chamber 22 from the gas-liquid guide pipe 26, and the gas in the liquid is cut into a plurality of micro-bubbles by the high-speed rotary cutting action of the rotating vane 29, and then the liquid is sent to the gas-liquid mixing chamber 23, so that the gas is dissolved into the liquid with more contact surface area and sufficient time, thereby improving the content of the gas dissolved into the liquid.

[0063] In one embodiment, the compressed air injection unit 3 further comprises:

[0064] a vortex air conveying unit connected with the air compressor 17, the vortex air conveying unit being arranged on the surface of the box 21, the vortex air conveying unit comprising: a shell 31 arranged at the side end of the box 21, three air supply ports 32 being arrayed on the shell 31 close to the end of the box 21 and being communicated in the gas-liquid mixing chamber 23, an air inlet 33 being located at the end of the shell 31 away from the box 21, the air inlet 33 being connected with the air compressor 17 through a pipeline, and the vortex air conveying unit conveying vortex air to the gas-liquid mixing chamber 23 to disturb the foam of the foam mixed liquid.

[0065] The working principle and beneficial effects of the above technical solution are:

[0066] The air compressor 17 sends compressed air into the vortex air conveying unit, the compressed air is sent into the box 21 from the air inlet 33, after vortex is generated, the compressed air is sent into the gas-liquid mixing chamber 23 from the three air outlets 32, the vortex air enriches the foam of the foam mixture in the form of turbulence, so that the foaming amount of the foam is improved.

[0067] In one example, the vortex air conveying unit further comprises:

[0068] A vortex rotating assembly is installed in the shell 31 close to the box 21, the vortex rotating assembly comprises a hollow rotating drum 34, a vortex air duct 35 is formed between the hollow rotating drum 34 and the inner wall of the shell 31, four flat surfaces 36 are distributed on the side end of the hollow rotating drum 34 in the circumferential direction, four retractable vortex plates 37 are located on the flat surfaces 36 one by one, an angle adjusting assembly is installed in the hollow rotating drum 34 and connected with the vortex plates 37.

[0069] A central rotating motor 38 is installed in the shell 31 away from the air inlet 33, the output end of the central rotating motor 38 is connected with the hollow rotating drum 34, and the end of the hollow rotating drum 34 close to the air inlet 33 is provided in the form of a spherical surface.

[0070] The working principle and beneficial effects of the above technical solution are:

[0071] The compressed air is sent into the box 21 from the air inlet 33, the compressed air is slightly stagnant in the vortex air duct 35, the central rotating motor 38 works, thereby driving the hollow rotating drum 34 to rotate at high speed, the vortex plates 37 distributed in the circumferential direction and located on the flat surfaces 36 rotate, and then the compressed air in the vortex air duct 35 generates vortex. The angle adjusting assembly located in the hollow rotating drum 34 works, thereby realizing the angle adjustment of the vortex plates 37 to change the potential energy of the vortex.

[0072] In one embodiment, the angle adjusting assembly comprises:

[0073] An upper cover body 41 and a lower cover body 42, the upper cover body 41 is fixedly installed on the inner wall of the hollow rotating drum 34, and the lower cover body 42 is detachably installed on the bottom end of the upper cover body 41.

[0074] A stator 43 and a rotor 44 in cooperation, the stator 43 is installed on the inner wall of the upper cover body 41, the rotor 44 is installed on the central rotating shaft 45, and the central rotating shaft 45 extends into the lower cover body 42.

[0075] A rotating disc 46, the rotating disc 46 is located in the lower cover body 42 and installed on the central rotating shaft 45.

[0076] The horizontal moving driving assembly, the belt transmission assembly, four horizontal moving driving assemblies and four belt transmission assemblies are distributed in the bottom of the lower cover body 42 in a circular array with the rotating disc 46 as the center, the belt transmission assembly is located between adjacent horizontal moving driving assemblies and is connected through the conveying belt 47, and the vortex plate 37 is connected with the horizontal moving driving assembly.

[0077] The working principle and beneficial effects of the above technical solution are:

[0078] The rotor 44 drives the central rotating shaft 45 to rotate in the stator 43, thereby driving the rotating disc 46 connected with the central rotating shaft 45 to rotate in the lower cover body 42, the rotating disc 46 drives four horizontal moving driving assemblies to synchronously extend outward, thereby driving the vortex plate 37 to extend out of the plane 36, and when the potential energy of the vortex needs to be changed, the belt transmission assembly works, thereby driving the vortex plate 37 to overturn on the plane 36 through the conveying belt 47, so as to realize the adjustment of the slope of the vortex plate 37, and the greater the slope of the vortex plate 37, the greater the centrifugal force of the vortex.

[0079] In one embodiment, the horizontal moving driving assembly comprises:

[0080] The chute one 48, four chute ones 48 are distributed in the bottom of the lower cover body 42 in a circular array with the rotating disc 46 as the center, and are arranged through the lower cover body 42, and the chute one 47 is arranged to point to the center end of the rotating disc 46;

[0081] The sliding block one 49 is slidingly connected in the chute one 48, the rotating shaft one 40 is installed on the sliding block one 49, the belt pulley one 51 is installed on one end of the rotating shaft one 40, and the conveying belt 47 is sleeved on the belt pulley one 51;

[0082] The rotating shaft two 52 is rotatably installed on the sliding block one 49, one end of the rotating shaft two 52 is connected with the other end of the rotating shaft one 40 through a pair of bevel gears 53, the other end of the rotating shaft two 52 extends into the receiving groove 54 arranged on the plane 36, and is connected with the vortex plate 37;

[0083] The rotating rod 55 is hingedly connected with the sliding block one 49 at one end, and is eccentrically hingedly connected with the rotating disc 46 at the other end.

[0084] The working principle and beneficial effects of the above technical solution are:

[0085] The rotating disc 46 rotates and drives the four rotating rods 55 to drive the connected sliding blocks 49 to move synchronously in the sliding grooves 48 away from the rotating disc 46, thereby driving the rotating shafts 52 installed on the sliding blocks 49 and the vortex plates 37 installed on the rotating shafts 52 to extend from the storage grooves 54 to the plane 36, and then driving the transmission assembly to work, so that the belt 47 drives the pulley 51 to rotate, thereby driving the bevel gears 53 coaxially installed on the rotating shafts 40 to rotate, thereby realizing the rotation of the rotating shafts 52 connected with the bevel gears 53, and the vortex plates 37 installed on the rotating shafts 52 are turned over on the plane 36, thereby realizing the adjustment of the slope of the vortex plates 37.

[0086] In one embodiment, the belt transmission assembly comprises:

[0087] The sliding grooves 56 are arranged in a circular array at the bottom of the lower cover body 42 with the rotating disc 46 as the center, and the sliding grooves 56 are arranged to point to the center of the rotating disc 46. The sliding blocks 57 are slidingly connected in the sliding grooves 56, and the return springs 58 are located in the sliding grooves 56 and abut between the sliding blocks 57 and the inner walls of the sliding grooves 56.

[0088] The pulleys 59 are rotatably installed on the sliding blocks 57, and one of the pulleys 59 is driven by the transmission motor. The belt 47 is sleeved on the pulleys 59.

[0089] The working principle and beneficial effects of the above technical solution are:

[0090] The four pulleys 51 and the four pulleys 59 form a four-cornered star structure with the belt 47 sleeved thereon. When the four pulleys 51 move away from the rotating disc 46, the belt 47 on the adjacent pulleys 51 is taut, thereby driving the pulleys 59 and the sliding blocks 57 connected with the pulleys 59 to move synchronously in the sliding grooves 56 away from the rotating disc 46. When the sliding blocks 49 move to the predetermined position in the sliding grooves 48, the transmission motor works, thereby driving the belt 47 to move, and further driving the pulleys 51 and the pulleys 59 to rotate synchronously. The bevel gears 53 coaxially installed on the rotating shafts 40 rotate, thereby realizing the rotation of the rotating shafts 52 connected with the bevel gears 53, and the vortex plates 37 installed on the rotating shafts 52 are turned over on the plane 36, thereby realizing the adjustment of the slope of the vortex plates 37.

[0091] In one embodiment, the center rotating shaft 45 is sleeved with a locking plate 50 near the end of the rotating disc 46, the locking plate 50 is abutted against the rotating disc 46 and the inner wall of the lower cover 42, a locking ring 61 is sleeved on the locking plate 50, wedge-shaped top blocks 62 are respectively abutted against the locking ring 61, the locking plate 50 and the inner wall of the lower cover 42, a containing chamber 65 is formed in the upper cover 41 for the locking ring 61 to ascend and descend, an oil passage I 63 is formed in the upper cover 41 and communicated with the containing chamber 65, an oil passage II 64 is formed in the lower cover 42 and communicated with a lifting sliding groove formed in the inner wall of the lower cover 42, a lifting sliding block is slidably connected in the lifting sliding groove and fixedly connected with the locking ring 61.

[0092] The working principle and beneficial effects of the above technical solution are:

[0093] The oil pressure system installed in the hollow rotating drum 34 sends hydraulic oil from the oil passage I 63 to the containing chamber 65, the locking ring 61 in the containing chamber 65 is lowered to press the locking plate 50 and the wedge-shaped top blocks 62, so that the locking plate 50 abuts against the rotating disc 46 and the locking plate 50 moves inward to lock the center rotating shaft 45, thereby completing the locking of the rotating disc 56. In this way, the vortex plate 37 will not loosen under the action of centrifugal force when the hollow rotating drum 34 rotates at high speed. When the rotating disc 56 needs to be unlocked, the oil pressure system sends hydraulic oil from the oil passage II 64 to the lifting sliding groove, the lifting sliding block in the lifting sliding groove drives the locking ring 61 to rise, thereby releasing the pressing of the locking plate 50 and the wedge-shaped top blocks 62, and the wedge-shaped top blocks 62 reset. At this time, the transmission motor works in reverse, the vortex plate 37 returns to vertical, and the rotating disc 56 rotates in reverse, and the vortex plate 37 is retracted into the storage groove 54.

[0094] Obviously, the above embodiments are only examples for clear illustration, and are not intended to limit the embodiments. Based on the above description, those skilled in the art can make other different forms of changes or modifications. Here, all the embodiments need not and cannot be exhausted. The obvious changes or modifications derived therefrom are still within the protection scope of the present application.

Claims

1. A perfluoroketone foam extinguishing system, characterized in that The application relates to a fire extinguishing device. The compressed air injection unit (3) further comprises: The vortex air conveying unit is connected with the air compressor (17), and comprises a vortex rotating assembly which is installed in the shell (31) and is close to the box body (21), wherein the vortex rotating assembly comprises a hollow rotating cylinder (34), a vortex air duct (35) is formed between the hollow rotating cylinder (34) and the inner wall of the shell (31), four flat surfaces (36) are distributed in the side end of the hollow rotating cylinder (34), four retractable vortex plates (37) are correspondingly arranged on the flat surfaces (36), and an angle adjusting assembly is installed in the hollow rotating cylinder (34) and is connected with the vortex plates (37). The angle adjusting assembly comprises: An upper cover body (41) and a lower cover body (42), the upper cover body (41) is fixedly installed on the inner wall of the hollow rotating cylinder (34), and the lower cover body (42) is detachably installed at the bottom end of the upper cover body (41); A stator (43) and a rotor (44) which are in matched connection, the stator (43) is installed on the inner wall of the upper cover body (41), the rotor (44) is installed on a central rotating shaft (45), and the central rotating shaft (45) extends into the lower cover body (42); A rotating disc (46) which is located in the lower cover body (42) and is installed on the central rotating shaft (45); Four horizontal movement driving assemblies and four belt transmission assemblies which are arranged in a circular array around the rotating disc (46) at the bottom of the lower cover body (42), the belt transmission assemblies are located between adjacent horizontal movement driving assemblies and are connected through conveying belts (47), and the vortex plates (37) are connected with the horizontal movement driving assemblies. The foam proportion mixing unit (1) is composed of a foam raw solution storage tank, a pressurized proportion mixing device and a foam proportion mixing device.

2. A perfluoroketone foam extinguishing system according to claim 1, characterised in that The foam proportion mixing device is composed of any one or a combination of a pressure type proportion mixing device, a balance type proportion mixing device, a mechanical pump type proportion mixing device or a metering injection type proportion mixing device.

3. A perfluoroketone foam extinguishing system according to claim 2, wherein The perfluorohexanone proportion mixer (11) is composed of an integrated perfluorohexanone proportion mixer and a Venturi tube proportion mixer.

4. A perfluoroketone foam extinguishing system according to claim 1, wherein ​ 5. A perfluoroketone foam extinguishing system according to claim 1, wherein The fire water passes through the foam proportioning device, the perfluorohexanone proportioning device (11), the compressed air injection unit (3) and the foam generating unit (4) in sequence, forms the foam mixture through the foam proportioning device, forms the perfluorohexanone foam mixture through the perfluorohexanone proportioning device (11), forms the perfluorohexanone air foam mixture of a preset proportion after passing through the compressed air injection unit (3), and is injected into the area where the fire occurs through the foam generating unit (4), so as to achieve the purpose of fire extinguishing.

6. A perfluoroketone foam extinguishing system according to claim 2, wherein The perfluorohexanone storage device (8) comprises a plurality of perfluorohexanone storage tanks (18) connected with a pressure reducing device (9) through a check valve one (19) and a pipeline of a pneumatic or electric valve (5), the pressure reducing device (9) is a pressure reducing valve group, and a safety valve (6) is further connected in bypass on the pipeline of the check valve one (19) and the pneumatic or electric valve (1).

7. A perfluoroketone foam extinguishing system according to claim 1, wherein The foam generating unit (4) comprises: a foam chamber (7) near the protected object, a connecting pipeline with an inlet connecting flange (12) connected with the foam chamber (7), the perfluorohexanone air foam mixture being sent into the connecting pipeline, and a gas-liquid inlet (13) located at the end of the connecting pipeline extending into the foam chamber (38); a foam generator cover (14) installed at the end of the foam chamber (7) away from the connecting pipeline; a foam outlet (15) located at the side end of the foam chamber (7).

8. A perfluoroketone foam extinguishing system according to claim 1, wherein The compressed air injection unit (3) comprises: a compressed air proportioning device (16) connected between the perfluorohexanone proportioning device (11) and the foam generating unit (4); an air compressor (17) connected to the compressed air proportioning device (16).

9. A perfluoroketone foam extinguishing system according to claim 8, wherein, The air compressor (17) and the compressed air proportioning device (16) are connected in sequence with an air pressure storage tank (68), a check valve two (66) and a pressure reducing valve one (67).

10. A perfluoroketone foam extinguishing system according to claim 1, wherein Further comprising: a fire monitoring unit connected in linkage with the foam proportioning unit (1), the perfluorohexanone injection unit (2), the compressed air injection unit (3) and the foam generating unit (4), a smoke fire detector installed near the protected object for detecting the fire information near the protected object, and the smoke fire detector being connected with the fire monitoring unit.

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