A self-heating life jacket air bag air supply tank

Abstract

The present invention discloses a self-heating life jacket air bag gas supply tank in the technical field of life jacket gas supply tanks, comprising a tank shell, a switch for triggering the generation of gas, a battery for powering supply and an ignition head for triggering the gas generation of a gas generating agent, wherein the switch is fixedly arranged on the inner wall of the bottom end of the tank shell, and the switch contact passes through the tank shell, and the battery is fixedly arranged on the inner wall of the tank shell at the upper end of the switch; the ignition head is fixedly arranged on the upper side of a partition fixedly arranged on the inner wall of the tank shell at the upper end of the battery, and passes through the partition; the present invention solves the problem that existing gas storage tanks are often inflated quickly, thereby quickly filling the life jacket to provide buoyancy, and since the coolant and the gas generating agent are encapsulated in the two cavities of the gas tank, instantaneous excitation may cause the high-temperature gas to not have time to quickly mix with the coolant, thereby causing the high-temperature gas to directly enter the life jacket, which may cause the life jacket to be damaged and fail due to high temperature.

Description

Technical Field

[0001] The invention relates to the technical field of life jacket air supply tanks, in particular to a self-heating life jacket air bag air supply tank. Background Art

[0002] At present, the gas cylinders of inflatable life jackets on the market are relatively uniform in form, but with different specifications, including 16g, 22g, 33g, 55g, etc. Since the gas cylinder stores liquid CO2 gas, the gas is released into the life jacket airbag through the mechanical opening of the pull ring, so that the life jacket can complete its work task. However, the released CO2 gas fills the life jacket airbag, making the life jacket airbag temperature low, which is not conducive to long-term rescue work.

[0003] A small number of existing life jacket air supply tanks can generate high-temperature gas, which is cooled to a suitable temperature after passing through the coolant inside the air supply tank and then filled into the life jacket, so that the life jacket has a certain thermal insulation performance for the human body, prolonging the hypothermia time of the drowning person, waiting for rescue, thereby increasing the survival rate of the drowning person. However, existing gas storage tanks are often inflated quickly, so that the life jacket is quickly filled to provide buoyancy. Since the coolant and the gas generating agent are encapsulated in the two cavities of the gas tank, the instantaneous excitation may cause the high-temperature gas and the coolant to not have time to mix quickly, so that the high-temperature gas directly enters the life jacket, which may cause the life jacket to be damaged and fail due to high temperature; secondly, it may cause scalding problems for the user.

[0004] Based on this, the present invention designs a self-heating life jacket air bag air supply tank to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a self-heating life jacket air bag air supply tank to solve the problem mentioned in the above background technology that a small number of existing life jacket air supply tanks can generate high-temperature gas, and the high-temperature gas is cooled to a suitable temperature after passing through the coolant inside the air supply tank and filled into the life jacket, so that the life jacket has a certain thermal insulation performance for the human body, prolongs the body hypothermia time of the drowning person, and waits for rescue, thereby increasing the survival rate of the drowning person. However, the existing gas storage tanks are often inflated quickly, so that the life jacket is quickly filled to provide buoyancy. Since the coolant and the gas generating agent are encapsulated in the two cavities of the gas tank, the instantaneous excitation may cause the high-temperature gas and the coolant to not have time to mix quickly, so that the high-temperature gas directly enters the life jacket, which may cause the life jacket to be damaged and fail due to high temperature; secondly, it may cause scalding of the user.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: a self-heating life jacket airbag gas supply tank, comprising a tank shell, a switch for triggering gas generation, a battery for power supply and an ignition head for triggering gas generation of a gas generating agent, wherein the switch is fixedly arranged on the inner wall of the bottom end of the tank shell, and the switch contact passes through the tank shell, and the battery is fixedly arranged on the inner wall of the tank shell at the upper end of the switch; the ignition head is fixedly arranged on the upper side of a partition fixedly arranged on the inner wall of the tank shell at the upper end of the battery, and passes through the partition;

[0007] Two conical plates coaxial with the tank shell are fixedly arranged on the inner wall of the tank shell, one above and one below; a gas generating agent for generating gas is stored inside the tank shell between the conical plates and the partition plate; a coolant for cooling the high-temperature gas generated by the gas generating agent is stored inside the tank shell between the two conical plates; a conical spiral tube for passing gas is arranged at the lower end of each of the conical plates; a plurality of air inlet holes are provided on the conical spiral tube; the lower ends of the two conical spiral tubes are connected by steel pipes fixed to both of them; the steel pipe passes through the conical plate on the lower side and is vertically slidably connected to the conical plate; the upper end of the upper conical spiral tube passes through the upper conical plate and is vertically slidably connected to the conical plate; a filter plate is fixedly arranged on the upper port of the lower conical spiral tube; and a mechanical cooling device for fully mixing cooling gas and hot gas is arranged at one end of the upper conical spiral tube passing through the conical plate.

[0008] As a further solution of the present invention, the mechanical cooling device includes a hollow impact tube for guiding gas, the impact tube is fixedly arranged on the upper end surface of the conical plate through which the upper conical spiral tube passes, the upper inner wall of the impact tube is fixedly provided with a cross which is thin at the lower end and thick at the upper end, the upper end of the cross is fixedly provided with an inverted cone block, the radius of the inverted cone block is larger than the radius of the impact tube, an accelerating tube is vertically slidably provided on the outer side wall of the inverted cone block, the accelerating tube is fixedly arranged on the upper end surface of the conical plate of the upper layer through a bracket, a plurality of gas ring holes for gas passing are opened on the side wall of the accelerating tube, and a mixing device is provided at the outer end of the accelerating tube.

[0009] As a further scheme of the present invention, the mixing device includes a mixing tube fixedly arranged on the upper end surface of the upper conical plate, the upper end side wall of the mixing tube is fixedly arranged on the upper inner wall of the tank shell, a plurality of curvature plates connected in the first place for dividing the mixed gas and enhancing cooling are arranged between the accelerating tube and the mixing tube, the upper end edge line of the curvature plate is perpendicular to the lower end edge line, the lower end edge line of the curvature plate at the upper end is perpendicular to the upper end edge line of the curvature plate at the lower end, the outer side wall of the curvature plate is fixedly arranged on the inner wall of the mixing tube, the inside of the curvature plate is fixedly arranged on the outer wall of the accelerating tube, the side wall of the curvature plate located near the gas ring hole is provided with an avoidance groove for avoiding the impact tube, and the inner wall of the conical spiral tube located at the lower end of the impact tube is provided with two guiding devices for guiding the conical spiral tube and the steel pipe to descend vertically to avoid deformation.

[0010] As a further solution of the present invention, the guiding device includes a cross fixedly arranged on the inner wall of the upper end of the conical spiral tube of the upper layer, a guiding rod fixedly arranged on the lower end of the cross, the guiding rod passes through the side wall of the conical spiral tube of the upper layer and is fixedly connected to the conical spiral tube, the guiding rod passes through the conical plate of the lower layer and is vertically slidingly connected to the conical plate of the lower layer, and one end of the guiding rod passes through the conical plate of the lower layer and is fixedly arranged on the outer wall of the upper end of the conical spiral tube of the lower layer through a triangular bracket.

[0011] As a further solution of the present invention, a pressure relief passage with two ends communicating with each other is provided inside the guide rod, and a pressure relief through hole is provided on the side wall of the guide rod between the two conical plates.

[0012] As a further solution of the present invention, the outer wall of the tank shell is provided with threads for fixing to a life jacket.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention generates a large amount of high temperature through the gas generating agent and fills it into the conical spiral tube of the lower layer, thereby indirectly entering the conical spiral tube in the coolant at the upper end, so that the cooling gas in the coolant is quickly sucked into the conical spiral tube through the siphon principle for efficient cooling. At the same time, due to the rapid generation and discharge of gas, the conical spiral tube obtains a greater anti-impact force, so that the two conical spiral tubes move in the coolant cavity and the gas generating agent cavity respectively, so that the gas generating agent and the coolant are quickly stirred without dead angles by the spiral conical pipe, so that the gas generating agent and the coolant can be gasified and cooled more quickly and thoroughly, so that the inflation of the life jacket is faster and more thorough, thereby accelerating the floating reaction time of the life jacket, avoiding the choking of the drowning person, and improving the survival rate of the drowning person; secondly, the remaining unstirred gas generating agent in the cavity between the conical spiral tube at the lower end and the partition slowly generates high-temperature gas, so that the life jacket is replenished with gas while keeping the life jacket warm, thereby further improving the survival rate of the drowning person and prolonging the rescue time.

[0015] 2. The present invention uses a reverse force on the gas blown out by an accelerating tube whose diameter is larger than the outer wall of the impact tube to the inverted cone block sliding in the accelerating tube. On the one hand, the pushing force of the impact tube on the conical spiral tube is improved, thereby improving the gas production and cooling efficiency. On the other hand, the gas at the outlet of the impact tube is obstructed and turbulence occurs, so that the high-temperature gas generated by the gas generating agent and the coolant is further mixed and cooled, thereby improving the cooling efficiency, thereby avoiding the problem of life jackets being damaged and failing due to high-temperature gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the axial section structure of the present invention;

[0019] Figure 3 For the present invention Figure 2 The enlarged structural diagram at A in the middle;

[0020] Figure 4 For the present invention Figure 2 The enlarged structural diagram at B in the middle;

[0021] Figure 5 For the present invention Figure 2 The enlarged structural diagram at C in the middle;

[0022] Figure 6 This is a schematic diagram of the internal structure of the present invention from a top view (tank shell hidden);

[0023] Figure 7 It is a schematic diagram of the connection structure between the conical spiral tube and the steel tube of the present invention.

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] Tank shell 8, switch 9, battery 10, ignition head 11, partition 12, conical plate 13, conical spiral tube 14, air inlet 15, steel pipe 16, filter plate 17, impact tube 20, cross 21, inverted cone block 22, acceleration tube 23, air ring hole 24, mixing tube 26, curvature plate 28, avoidance groove 29, guide rod 31, pressure relief channel 32, thread 34. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-7The present invention provides a technical solution: a self-heating life jacket airbag gas supply tank, comprising a tank shell 8, a switch 9 for triggering gas generation, a battery 10 for power supply and an ignition head 11 for triggering gas generation of a gas generating agent, the switch 9 is fixedly arranged on the inner wall of the bottom end of the tank shell 8, and the contact of the switch 9 passes through the tank shell 8, the battery 10 is fixedly arranged on the inner wall of the tank shell 8 at the upper end of the switch 9; the ignition head 11 is fixedly arranged on the upper side of a partition 12 fixedly arranged on the inner wall of the tank shell 8 at the upper end of the battery 10, and passes through the partition 12;

[0028] Two conical plates 13 coaxial with the tank shell 8 are fixedly arranged on the inner wall of the tank shell 8, one above and one below. A gas generating agent for generating gas is stored inside the tank shell 8 between the conical plates 13 and the partition plate 12. A coolant for cooling the high-temperature gas generated by the gas generating agent is stored inside the tank shell 8 between the two conical plates 13. A conical spiral tube 14 for passing gas is arranged at the lower end of each conical plate 13. A plurality of air inlet holes 15 are opened on the conical spiral tube 14. The two conical spiral tubes 14 are provided with a plurality of air inlet holes 15. The lower end of the spiral tube 14 is connected to both of them through a steel pipe 16 fixed thereto. The steel pipe 16 passes through the lower conical plate 13 and is vertically slidably connected to the conical plate 13. The upper end of the upper conical spiral tube 14 passes through the upper conical plate 13 and is vertically slidably connected to the conical plate 13. A filter plate 17 is fixedly provided at the upper end of the lower conical spiral tube 14. One end of the upper conical spiral tube 14 passing through the conical plate 13 is provided with a mechanical cooling device for fully mixing the cooling gas and the hot gas.

[0029] Before using the present invention, the tank shell 8 is first fixed to the air duct of the life jacket (when not used for a long time, the tank shell 8 needs to be regularly disassembled to check the air tightness of the tank shell 8, and at the same time check whether the battery is charged and whether the device is invalid. When the device is out of shelf life, it needs to be scrapped); the present invention adopts an active triggering method, and the switch 9 needs to be waterproofed;

[0030] When the present invention is used, when the user presses the contact of the switch 9, the switch is turned on, so that the ignition head 11 is energized, thereby triggering the gas generating agent between the lower conical plate 13 and the partition 12, and the gas generating agent quickly generates a large amount of high-temperature gas. The high-temperature gas flows into the conical spiral tube 14 through the air inlet 15 on the lower conical spiral tube 14. After the air pressure in the lower conical spiral tube 14 increases, it will quickly pass through the steel pipe 16 into the cavity where the coolant is located between the two conical plates 13, that is, the interior of the upper conical spiral tube 14, and then quickly discharge upward from the upper end of the conical spiral tube 14 through the end of the conical plate 13, and the upper conical spiral tube 14 will be discharged upward. The gas at the outlet end of the conical spiral tube 14 is quickly discharged into the upper end of the tank shell 8, and then discharged into the inflation pipe of the life jacket from the outlet at the upper end of the tank shell 8, thereby completing the insulation and inflation of the life jacket. During this process, the rapid circulation of the gas inside the conical spiral tube 14 in the cavity where the coolant is located will quickly introduce the cooling gas in the coolant cavity into the conical spiral tube 14 through the air inlet 15 through the siphon principle, thereby completing the rapid filling of the lower layer of gas generating agent into the high-temperature gas in the lower conical spiral tube 14, and mixing in the upper conical spiral tube 14 (the gas will experience turbulent acceleration after passing through the conical spiral tube 14, thereby further improving the conical spiral tube 14 internal gas flow rate, thereby quickly drawing the cooling gas in the upper coolant cavity into the conical spiral tube 14, and quickly mixing through turbulence, thereby achieving an efficient cooling effect; at the same time, the spiral pipeline trajectory of the conical spiral tube 14 in the upper coolant can expand the contact area between the pipeline and the coolant, thereby further improving the cooling effect). Secondly, when the upper conical spiral tube 14 sprays gas upward to the outside of the tank shell 8 at the upper end of the conical plate 13 of the upper layer, the gas is ejected instantly, thereby having a reaction force on the conical spiral tube 14, so that the upper conical spiral tube 14 slides downward along the upper conical plate 13, thereby The coolant cavity between the two conical plates 13 is swept over to complete the stirring of the coolant, so that the coolant reacts faster to generate cooling gas, thereby cooling the hot air passing through the conical spiral tube 14; at the same time, the upper conical spiral tube 14 descends to drive the steel pipe 16 to slide downward along the conical plate 13 of the lower layer, thereby driving the lower conical spiral tube 14 to move downward, so that the lower conical spiral tube 14 located inside the gas generating agent cavity stirs the gas generating agent in the cavity, so that the gas generating agent can react more thoroughly to quickly generate more gas, thereby making the life jacket inflation speed faster, (such as Figure 2As shown, the conical spiral design of the conical spiral tube 14 enables the spiral tube to cover the entire radial circular area of ​​the tank shell 8 in the axial projection of the tank shell 8, that is, to cover the entire area of ​​the partition 12, so that the conical spiral tubes 14 of the upper and lower layers can stir the gas generating agent and the coolant without dead angles when they sweep the entire gas generating agent and the coolant cavity respectively, so that the gas generating agent can instantly produce more gas, and the coolant can produce more cooling gas, thereby achieving an efficient cooling effect); when the conical spiral tube 14 at the upper end moves to the upper end of the conical plate 13 of the lower layer, and the conical spiral tube 14 at the lower end moves to the upper end of the partition 12, it is in a stationary state at this time, and the conical spiral tube 14 at the lower end and the partition A conical cavity is generated between 12, so that the gas generating agent in the cavity can slowly generate hot gas to supply the life jacket, thereby keeping the life jacket warm and inflating. At the same time, the conical spiral tube 14 at the upper end has fallen to the upper end of the conical plate 13 at the lower layer, and there is no coolant space, so that the remaining amount of coolant is insufficient to cool the slow high-temperature gas generated by the gas generating agent in the remaining cavity, so that the gas generating agent can slowly fill the high-temperature gas into the gas cooled by water in the life jacket, thereby extending the insulation time of the life jacket (the high-temperature gas is generated slowly, the overall temperature drops, and only environmental cooling is required), so that the life jacket can be kept warm for a long time, thereby improving the survival rate of the drowning person and obtaining more rescue time;

[0031] The present invention generates a large amount of high temperature through the gas generating agent and fills it into the conical spiral tube 14 of the lower layer, thereby indirectly entering the conical spiral tube 14 in the upper coolant, so that the cooling gas in the coolant is quickly sucked into the conical spiral tube 14 through the siphon principle for efficient cooling. At the same time, due to the rapid generation and discharge of gas, the conical spiral tube 14 obtains a greater anti-impact force, so that the two conical spiral tubes 14 move in the coolant cavity and the gas generating cavity respectively, so that the gas generating agent and the coolant are quickly stirred without dead angles by the spiral conical pipe, so that the gas generating agent and the coolant can be gasified and cooled more quickly and thoroughly, so that the inflation of the life jacket is faster and more thorough, thereby accelerating the floating reaction time of the life jacket, avoiding the choking of the drowning person, and improving the survival rate of the drowning person; secondly, the remaining unstirred gas generating agent in the cavity between the conical spiral tube 14 at the lower end and the partition 12 slowly generates high-temperature gas, so that the life jacket is replenished with gas while keeping the life jacket warm, thereby further improving the survival rate of the drowning person and prolonging the rescue time.

[0032] Since the spiral conical spiral tube 14 is used to mix the high-temperature gas and the cooling gas, turbulence may occur in the conical spiral tube 14, so that the cooling gas and the high-temperature gas are not completely mixed before being discharged into the life jacket, thereby causing the high-temperature gas to damage the life jacket, making the life jacket ineffective. In this regard, the present invention provides a mixing device to solve the above problem.

[0033] As a further solution of the present invention, the mechanical cooling device includes a hollow impact tube 20 for guiding gas, the impact tube is fixedly arranged on the upper end surface of the conical plate 13 through which the upper conical spiral tube 14 passes, a cross 21 with a thin lower end and a thick upper end is fixedly arranged on the inner wall of the upper end of the impact tube 20, an inverted cone block 22 is fixedly arranged on the upper end of the cross 21, the radius of the inverted cone block 22 is greater than the radius of the impact tube 20, an acceleration tube 23 is vertically slidably arranged on the outer side wall of the inverted cone block 22, the acceleration tube 23 is fixedly arranged on the upper end surface of the upper conical plate 13 through a bracket, a plurality of gas passing ring holes 24 for passing gas are opened on the side wall of the acceleration tube 23, and a mixing device is arranged on the outer end of the acceleration tube 23;

[0034] When the present invention is used, the mixed gas in the conical spiral tube 14 is filled into the impact tube 20, and then passes through the cross 21 at the upper end of the impact tube 20 (such as Figure 2 and 3 As shown, the cross 21 is thin at the bottom and thick at the top, which can make the gas less obstructed without affecting the structural strength, avoiding the problem of gas being decelerated), impacting the lower side wall of the inverted cone block 22, and then rebounding to the outside of the impact tube 20 through the lower side wall of the inverted cone block 22. The inside of the acceleration tube 23 is not in contact with the outer wall of the impact tube 20, so that the acceleration tube 23 is ejected downward, thereby performing a certain obstruction, making the anti-impact force of the impact tube 20 larger, thereby increasing the downward force of the impact tube 20, so that the impact tube 20 has a greater force to push the upper conical spiral The tube 14 moves downward, thereby increasing the force of the tapered spiral tube 14 to stir the coolant and the gas generating agent, making the gas generating cooling mixing efficiency faster; secondly, when the gas descends along the accelerating tube 23 and encounters the gas ring hole 24, it is directly discharged from the accelerating tube 23, thereby avoiding the problem that the upper end of the impact tube 20 is too blocked, resulting in gas outlet obstruction and reduced gas outlet efficiency; the impact tube 20 also follows the tapered spiral tube 14 to descend and slide in the accelerating tube 23, so that the inverted cone block 22 at the upper end is driven synchronously by the cross 21 and moves downward;

[0035] The present invention uses the reverse force of the gas blown out by the accelerating tube 23 having a diameter larger than the outer wall of the impact tube 20 on the inverted cone block 22 sliding in the accelerating tube 23, which, on the one hand, improves the pushing force of the impact tube 20 on the conical spiral tube 14 and improves the gas production and cooling efficiency. On the other hand, the gas at the outlet of the impact tube 20 is obstructed and turbulence occurs, so that the high-temperature gas generated by the gas generating agent and the coolant is further mixed and cooled, thereby improving the cooling efficiency, thereby avoiding the problem of the life jacket being damaged and failing due to the high-temperature gas.

[0036] As a further solution of the present invention, the mixing device includes a mixing tube 26 fixedly arranged on the upper end surface of the upper conical plate 13, and the upper end side wall of the mixing tube 26 is fixedly arranged on the upper end inner wall of the tank shell 8;

[0037] When the present invention is working, the mixing tube 26 connects the upper end of the conical plate 13 with the air outlet of the tank shell 8, so that the gas discharged from the air ring hole 24 of the accelerating tube 23 can be smoothly introduced into the air inlet pipe of the life jacket. Secondly, when the tank shell 8 sinks into the water, the gas for supplementing the temperature maintenance of the life jacket generated by the remaining gas generating agent between the lower conical spiral tube 14 and the partition 12 can be cooled to a certain extent (because there is no remaining undisturbed coolant between the upper conical spiral tube 14 and the middle conical plate 13, the cooling effect has decreased at this time); thereby reducing the temperature of the gas for supplementing the temperature maintenance.

[0038] As a further solution of the present invention, a plurality of curvature plates 28 for dividing the mixed gas and strengthening the cooling are arranged between the accelerating tube 23 and the mixing tube 26. The upper edge line of the curvature plate 28 is perpendicular to the lower edge line, the lower edge line of the upper curvature plate 28 is perpendicular to the upper edge line of the lower curvature plate 28, the outer wall of the curvature plate 28 is fixedly arranged on the inner wall of the mixing tube 26, the inner part of the curvature plate 28 is fixedly arranged on the outer wall of the accelerating tube 23, the side wall of the curvature plate 28 near the gas ring hole 24 is provided with an avoidance groove 29 for avoiding the impact tube 20, and the inner wall of the conical spiral tube 14 at the lower end of the impact tube 20 is provided with two guiding devices for guiding the conical spiral tube 14 and the steel tube 16 to vertically descend to avoid deformation;

[0039] When the present invention is used, as the inverted cone block 22 and the impact tube 20 descend, the exhaust port of the impact tube 20 descends to the lower end of the acceleration tube 23, so that the air is exhausted from the acceleration tube 23, so that the mixer passes through the curvature plate 28 layer by layer, so that the mixer is mixed and divided into two halves multiple times, thereby improving cooling mixing.

[0040] As a further solution of the present invention, the guiding device includes a cross 21 fixedly arranged on the inner wall of the upper end of the conical spiral tube 14 of the upper layer, a guiding rod 31 is fixedly arranged on the lower end of the cross 21, the guiding rod 31 passes through the side wall of the conical spiral tube 14 of the upper layer and is fixedly connected to the conical spiral tube 14, the guiding rod 31 passes through the conical plate 13 of the lower layer and is vertically slidably connected to the conical plate 13 of the lower layer, and one end of the guiding rod 31 passes through the conical plate 13 of the lower layer and is fixedly arranged on the outer wall of the upper end of the conical spiral tube 14 of the lower layer through a triangular bracket;

[0041] When the present invention is working, the cross 21 set on the force point where the upper end of the upper conical spiral tube 14 is combined with the impact tube 20 acts, so that the impact tube 20 directly acts on the guide rod 31, so that the guide rod 31 directly acts on the conical spiral tube 14 at the lower end, thereby completing the synchronous movement of the two conical spiral tubes 14 (such as Figure 2 and 6As shown, the steel pipe 16 is on the side of the two conical spiral pipes 14, so that the force will be radially tilted, which may cause the steel pipe 16 to break. The guide rod 31 descends and slides directly on the conical plate 13 of the lower layer.

[0042] As a further solution of the present invention, a pressure relief passage 32 with two ends communicating with each other is provided inside the guide rod 31, and a pressure relief through hole 33 is provided on the side wall of the guide rod 31 between the two conical plates 13;

[0043] The high-pressure gas can directly enter the coolant cavity from the pressure relief channel 32 in the thinner guide rod 31 through the pressure relief through hole 33 on the side wall, thereby completing the pressure relief and avoiding equipment overload and damage.

[0044] As a further solution of the present invention, the outer wall of the tank shell 8 is provided with threads 34 for fixing to a life jacket.

Claims

1. A self-heating life jacket airbag gas supply tank, comprising a tank shell (8), a switch (9) for triggering gas generation, a battery (10) for powering, and an ignition head (11) for triggering gas generation by a gas generating agent, wherein the switch (9) is fixedly arranged on the inner wall of the bottom end of the tank shell (8), and the switch (9) contact passes through the tank shell (8), and the battery (10) is fixedly arranged on the inner wall of the tank shell (8) above the switch (9); the ignition head (11) is fixedly arranged on the upper side of a partition (12) fixedly arranged on the inner wall of the tank shell (8) above the battery (10), and passes through the partition (12); Features: The inner wall of the tank shell (8) is fixedly provided with two conical plates (13) coaxial with the tank shell (8), one above the other. A gas generating agent for generating gas is stored inside the tank shell (8) between the conical plates (13) and the partition plate (12). A coolant for cooling high-temperature gas generated by the gas generating agent is stored inside the tank shell (8) between the two conical plates (13). A conical spiral tube (14) for passing gas is provided at the lower end of each conical plate (13). A plurality of gas inlet holes (15) are opened on the conical spiral tube (14). The two conical plates (13) are connected to the conical spiral tube (14). The lower end of the spiral tube (14) is connected to both of them through a steel tube (16) fixed to them. The steel tube (16) passes through the lower conical plate (13) and is vertically slidably connected to the conical plate (13). The upper end of the conical spiral tube (14) on the upper side passes through the upper conical plate (13) and is vertically slidably connected to the conical plate (13). A filter plate (17) is fixedly provided at the upper end of the conical spiral tube (14) on the lower side. One end of the conical spiral tube (14) on the upper side that passes through the conical plate (13) is provided with a mechanical cooling device for fully mixing cooling gas and hot gas.

2. A self-heating life jacket airbag air supply tank according to claim 1, characterized in that: The mechanical cooling device comprises a hollow impact tube (20) for guiding gas, wherein the impact tube is fixedly arranged on the upper end surface of the conical plate (13) through which the upper conical spiral tube (14) passes, and a cross (21) with a thin lower end and a thick upper end is fixedly arranged on the inner wall of the upper end of the impact tube (20), and an inverted cone block (22) is fixedly arranged on the upper end of the cross (21), wherein the radius of the inverted cone block (22) is greater than the radius of the impact tube (20), and an acceleration tube (23) is vertically slidably arranged on the outer side wall of the inverted cone block (22), and the acceleration tube (23) is fixedly arranged on the upper end surface of the upper conical plate (13) through a bracket, and a plurality of gas ring holes (24) for gas passing are opened on the side wall of the acceleration tube (23), and a mixing device is arranged at the outer end of the acceleration tube (23).

3. A self-heating life jacket airbag air supply tank according to claim 2, characterized in that: The mixing device comprises a mixing tube (26) fixedly arranged on the upper end surface of the upper conical plate (13), the upper end side wall of the mixing tube (26) being fixedly arranged on the upper end inner wall of the tank shell (8), a plurality of curvature plates (28) for dividing the mixed gas and strengthening cooling are arranged between the accelerating tube (23) and the mixing tube (26), the upper end edge line of the curvature plate (28) being perpendicular to the lower end edge line, and the lower end edge line of the upper curvature plate (28) being perpendicular to the upper end edge line of the lower curvature plate (28) The outer wall of the curvature plate (28) is fixedly arranged on the inner wall of the mixing tube (26), the inner wall of the curvature plate (28) is fixedly arranged on the outer wall of the accelerating tube (23), the side wall of the curvature plate (28) located near the gas ring hole (24) is provided with an avoidance groove (29) for avoiding the impact tube (20), and the inner wall of the conical spiral tube (14) located at the lower end of the impact tube (20) is provided with two guiding devices for guiding the conical spiral tube (14) and the steel tube (16) to vertically descend to avoid deformation.

4. A self-heating life jacket airbag air supply tank according to claim 3, characterized in that: The guiding device comprises a cross (21) fixedly arranged on the inner wall of the upper end of the conical spiral tube (14) of the upper layer, a guiding rod (31) fixedly arranged on the lower end of the cross (21), the guiding rod (31) passing through the side wall of the conical spiral tube (14) of the upper layer and being fixedly connected to the conical spiral tube (14), the guiding rod (31) passing through the conical plate (13) of the lower layer and being vertically slidably connected to the conical plate (13) of the lower layer, and one end of the guiding rod (31) passing through the conical plate (13) of the lower layer is fixedly arranged on the outer wall of the upper end of the conical spiral tube (14) of the lower layer through a triangular bracket.

5. A self-heating life jacket airbag air supply tank according to claim 4, characterized in that: A pressure relief passage (32) with two communicating ends is provided inside the guide rod (31), and a pressure relief through hole (33) is provided on the side wall of the guide rod (31) between the two conical plates (13).

6. A self-heating life jacket airbag air supply tank according to claim 1, characterized in that: The outer wall of the tank shell (8) is provided with a thread (34) for fixing to a life jacket.

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