Offshore escape lifesaving respirator

Abstract

The utility model relates to a seaborne escape lifesaving respirator which is composed of a carbon fiber gas cylinder, a first-stage pressure reducing valve, a gas supply hose and a second-stage breather valve, the first-stage pressure reducing valve is composed of a pressure reducing valve body, a switch part, a pressure reducing part, a gas input part and a gas output part, and the switch part comprises a switch knob, a switch fixing screw, a switch rotating rod and a switch rotating plug; the pressure reducing part comprises a pressure reducing bin, a pressure reducing bin piston, a pressure reducing bin spring, a pressure reducing bin piston plug and a pressure reducing bin silicon rubber case; the gas input part comprises an inflation male head, an inflation male head plug core and an inflation one-way spring; and the gas output part comprises a double-interface right-angle spherical joint rotating shaft, a right-angle spherical joint fixing shaft and a medium-pressure explosion-proof screw. The switch rotating rod is used for controlling the switch rotating plug to rotate, the male inflation plug is arranged in the male inflation plug, the one-way inflation spring is arranged behind the male inflation plug, the structure can bear gas with higher pressure to be inflated into the first-stage pressure reducing valve, and more gas is provided.

Description

Technical Field

[0001] The utility model relates to the technical field of diving emergency rescue, in particular to a marine escape and life-saving respirator. Background Art

[0002] Chinese Patent Publication (Announcement) No.: CN216546639U, Patent Title: An emergency rescue breathing apparatus, characterized in that it comprises a constant pressure diving first-stage pressure reducing valve (1), an automatic pressure relief valve (2), a medium pressure pipe (3), a 360-degree rotating joint (4), a metal second-stage breathing valve (5) and a carbon fiber bottle (6); the upper end of the carbon fiber bottle (6) is sealedly connected with the constant pressure diving first-stage pressure reducing valve (1), the air outlet of the constant pressure diving first-stage pressure reducing valve (1) is equipped with an automatic pressure relief valve (2), the automatic pressure relief valve (2) is connected to the 360-degree rotating joint (4) through the medium pressure pipe (3), and the other end of the 360-degree rotating joint (4) is equipped with a metal second-stage breathing valve (5).

[0003] The solution adopted by this utility model is: it includes a constant pressure diving first-stage pressure reducing valve, an automatic pressure relief valve, a medium pressure pipe, a 360-degree swivel joint, a metal second-stage breathing valve and a carbon fiber bottle; the upper end of the carbon fiber bottle is sealed and connected with a constant pressure diving first-stage pressure reducing valve, the capacity of the carbon fiber bottle is 0.5L, and the constant pressure diving first-stage pressure reducing valve uses the throttling principle to reduce the 5-20Mpa high-pressure gas inside the 0.5L carbon fiber bottle to a stable low-pressure gas of 0.7-0.9Mpa; an automatic pressure relief valve is installed at the air outlet of the constant pressure diving first-stage pressure reducing valve, the automatic pressure relief valve is connected to the 360-degree swivel joint through the medium pressure pipe, and the other end of the 360-degree swivel joint is installed with a metal second-stage breathing valve.

[0004] This existing emergency rescue respirator uses a 0.5L carbon fiber gas cylinder, which may cause personnel to use it underwater for insufficient time during use, affecting safety; at the same time, the upper limit of the working pressure of the first-level pressure reducing valve of the existing emergency rescue respirator is 20Mpa, which makes the amount of compressed air in the 0.5L gas cylinder insufficient, resulting in insufficient underwater use time for personnel, affecting safety. Summary of the invention

[0005] The utility model aims to provide a marine escape life-saving breathing apparatus to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the utility model is implemented through the following technical measures: a marine escape life-saving respirator, which includes a carbon fiber gas cylinder, the carbon fiber gas cylinder is connected to a first-level pressure reducing valve, the first-level pressure reducing valve is connected to an air supply hose, and the other end of the air supply hose is connected to a second-level breathing valve; the first-level pressure reducing valve includes a pressure reducing valve body, on which a switch part, a pressure reducing part, a gas input part, and a gas output part are installed; the switch part includes a switch knob, the switch knob is connected to a switch fixing screw, the external thread of the switch fixing screw is threadedly connected to the pressure reducing valve body, and the inside of the switch fixing screw is connected to a switch The switch rotary rod is connected with a switch rotating plug; the decompression part includes a decompression chamber, a decompression chamber piston, a decompression chamber spring, a decompression chamber piston plug, and a decompression chamber silicone sleeve, which are installed on the decompression valve body from top to bottom; the gas input part includes an inflation male head, the external thread of the inflation male head is threadedly connected with the decompression valve body, the inflation male head is internally sleeved with an inflation male head plug core, and an inflation one-way spring is arranged behind the inflation male head plug core; the gas output part includes a double-interface right-angle spherical joint rotating shaft, the double-interface right-angle spherical joint rotating shaft is fixed to the decompression valve body through a right-angle spherical joint fixing shaft, and a medium-pressure explosion-proof screw is arranged on the double-interface right-angle spherical joint rotating shaft.

[0007] Compared with the prior art, the advantages of the utility model are: the switch rotating plug is controlled to rotate synchronously by the switch rotary rod, so that higher pressure gas can enter the first-stage pressure reducing valve, and the switch part can also be opened and closed normally; an inflatable male head plug core is sleeved in the inflatable male head, and an inflatable one-way spring is arranged behind the inflatable male head plug core. This structure can withstand higher pressure gas to be filled into the first-stage pressure reducing valve, and under the action of the one-way spring, there will be no backflow phenomenon.

[0008] As an improvement of the utility model, the material of the pressure reducing valve body is selected from 316 stainless steel. The purpose of selecting this design is that 316 stainless steel has excellent corrosion resistance, atmospheric corrosion resistance and high temperature strength due to the addition of Mo, and can be used under harsh conditions and is suitable for use in seawater.

[0009] As an improvement of the utility model, the switch fixing screw is made of 316 stainless steel, and the threaded connection section thereof is fully engaged with the main body of the pressure reducing valve. The purpose of selecting this design is that 316 stainless steel is strong enough, and the threaded connection section is fully engaged, which further enhances the strength of the first-stage pressure reducing valve.

[0010] As an improvement of the utility model, the material of the inflation male head is 316 stainless steel, and the threaded connection section thereof and the pressure reducing valve body are full-size meshing, and the material of the inflation male head sealing ring on the inflation male head is fluororubber. The purpose of selecting this design is: 316 stainless steel is strong enough, the threaded connection section is full-size meshing, which further enhances the strength of the first-stage pressure reducing valve, and the fluororubber is more resistant to high pressure.

[0011] As an improvement of the utility model, an explosion-proof screw is provided on the main body of the pressure reducing valve. The purpose of selecting this design is that when the pressure inside the high-pressure system exceeds the ultimate bearing capacity of the container, the explosion-proof screw will be destroyed and released in a short time, and the high-pressure gas will be quickly released, thereby reducing the pressure and reducing the harm, thereby protecting personnel and equipment from the impact and damage of the high-pressure gas.

[0012] As an improvement of the utility model, the switch rotating rod is provided with a waist-shaped protrusion, and the switch rotating plug is provided with a waist-shaped groove. The purpose of selecting this design is that after the waist-shaped protrusion is inserted into the waist-shaped groove, the contact area between the two is increased, and a stronger torque can be transmitted, so that the high-pressure resistance of the first-stage pressure reducing valve can be further enhanced. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0014] In the attached picture:

[0015] Figure 1 The utility model is a schematic diagram of the marine escape life-saving respirator.

[0016] Figure 2 This is an exploded view of the first-stage pressure reducing valve described in the utility model.

[0017] Figure 3 It is an exploded view of the decompression part described in the utility model.

[0018] Figure 4 This is an exploded view of the switch portion of the present invention.

[0019] Figure 5 This is an exploded view of the gas input and output parts of the utility model.

[0020] Figure 6 It is a cross-sectional view of the first-stage pressure reducing valve described in the utility model.

[0021] Figure 7 It is a three-dimensional diagram of the on-off structure of the switch part of the utility model.

[0022] Explanation of reference numerals: 1. First-stage pressure reducing valve; 2. Air supply hose; 3. Second-stage breathing valve; 4. Carbon fiber gas cylinder; 5. Pressure reducing part; 6. Switch part; 7. Gas input part; 8. Gas output part; 9. Pressure reducing valve body; 10. Pressure reducing chamber; 11. Pressure reducing chamber piston; 12. Pressure reducing chamber spring; 13. Pressure reducing chamber piston plug; 14. Piston sealing ring; 15. Pressure reducing chamber sealing ring; 16. Inflatable male plug; 17. Inflatable male plug core; 18. Inflatable one-way spring; 19. Inflatable male plug sealing ring; 20. Silicone plug; 21. Nut; 22. Inflatable male plug sealing ring; 23. Switch fixing screw; 24. Switch small gasket; 25. Switch rotary rod; 2 6. Switch knob; 27. Switch rotating plug; 28. Switch large gasket; 29. ​​Switch locking screw; 30. Switch spring; 31. Switch large sealing ring; 32. Switch knob cover; 33. Switch plastic plug; 34. Switch front sealing ring; 35. Switch rear sealing ring; 36. Explosion-proof screw; 37. Pressure gauge; 38. Pressure gauge gasket; 39. Right-angle ball joint fixed shaft; 40. Double-port right-angle ball joint rotating shaft; 41. Medium-pressure explosion-proof screw; 42. Medium-pressure explosion-proof sealing ring; 43. Fixed shaft large sealing ring; 44. Fixed shaft small sealing ring; 45. Fixed shaft gasket; 46. Decompression chamber silicone sleeve; 47. Waist-shaped protrusion; 48. Waist-shaped groove. DETAILED DESCRIPTION

[0023] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0024] Example 1

[0025] Please refer to Figure 1 -7.

[0026] The present embodiment provides a marine escape life-saving respirator, comprising a carbon fiber gas cylinder 4, to which a first-level pressure reducing valve 1 is connected, and the first-level pressure reducing valve 1 is connected to an air supply hose 2, and the other end of the air supply hose 2 is connected to a second-level breathing valve 3, wherein the carbon fiber gas cylinder 4 and the second-level breathing valve 3 are commercially available parts.

[0027] In the embodiments of the present utility model application, please refer to Figure 2 The first-stage pressure reducing valve 1 includes a pressure reducing valve body 9, on which a switch part 6, a pressure reducing part 5, a gas input part 7, and a gas output part 8 are installed.

[0028] In the embodiment of the present utility model application, the switch part 6 includes a switch knob 26, the switch knob 26 is connected to a switch fixing screw 23, the external thread of the switch fixing screw 23 is threadedly connected to the pressure reducing valve body 9, the inside of the switch fixing screw 23 is connected to a switch rotating rod 25, and the switch rotating rod 25 is connected to a switch rotating plug 27, which are the main parts.

[0029] Please refer to Figure 4 Further, the switch part 6 is composed of a switch knob cover 32, a switch locking screw 29, a switch spring 30, a switch knob 26, a switch rear sealing ring 35, a switch large gasket 28, a switch fixing screw 23, a switch large sealing ring 31, a switch front sealing ring 34, a switch rotating rod 25, a switch small gasket 24, a switch rotating plug 27, and a switch plastic plug 33. The switch part 6 is connected to the pressure reducing valve body 9 through the switch fixing screw 23; the pressure gauge 37 and the pressure gauge gasket 38 are connected to the pressure reducing valve body 9 through threads.

[0030] In the embodiments of the present utility model application, please refer to Figure 3 The decompression part 5 includes a decompression chamber 10, a decompression chamber piston 11, a decompression chamber spring 12, a decompression chamber piston plug 13, a piston sealing ring 14, a decompression chamber sealing ring 15, and a decompression chamber silicone sleeve 46, which are installed on the decompression valve body 9 from top to bottom.

[0031] In the embodiments of the present utility model application, please refer to Figure 5 The gas input part 7 includes an inflatable male connector 16, the external thread of the inflatable male connector 16 is threadedly connected to the pressure reducing valve body 9, the inflatable male connector 16 is sleeved with an inflatable male connector plug 17, and an inflatable one-way spring 18 is arranged behind the inflatable male connector plug 17. The nut 21 and the silicone plug 20 are connected to the inflatable male connector 16, and the inflatable male connector 16 is assembled with the inflatable male connector sealing ring 22, the inflatable male connector plug sealing ring 19, the inflatable male connector plug 17, and the inflatable one-way spring 18, and is connected to the primary pressure reducing valve body 9 through threads. Among them, the inflatable male connector sealing ring (22) on the inflatable male connector (16) is made of fluororubber, which is more resistant to high pressure.

[0032] In the embodiments of the present utility model application, please refer to Figure 5 The gas output part 8 includes a double-interface right-angle spherical joint shaft 40, which is fixed to the pressure reducing valve body 9 through a right-angle spherical joint fixed shaft 39, a large fixed shaft sealing ring 43, a fixed shaft gasket 45, and a small fixed shaft sealing ring 44. The double-interface right-angle spherical joint shaft 40 is provided with a medium-pressure explosion-proof screw 41 and a medium-pressure explosion-proof sealing ring 42.

[0033] Furthermore, the material of the pressure reducing valve body 9 is 316 stainless steel. Since 316 stainless steel has Mo added, its corrosion resistance, atmospheric corrosion resistance and high temperature strength are particularly good, and it can be used under harsh conditions and is suitable for use in seawater.

[0034] Furthermore, the switch fixing screw 23 is made of 316 stainless steel, and the threaded connection section thereof is in full-size engagement with the pressure reducing valve body 9. 316 stainless steel is strong enough, and the threaded connection section is in full-size engagement, which further enhances the strength of the first-stage pressure reducing valve 1.

[0035] Furthermore, the material of the inflation male plug 16 is 316 stainless steel, and the threaded connection section thereof is in full-size engagement with the pressure reducing valve body 9. 316 stainless steel is strong enough, and the threaded connection section is in full-size engagement, which further enhances the strength of the first-stage pressure reducing valve 1.

[0036] Furthermore, an explosion-proof screw 36 is provided on the pressure reducing valve body 9. When the pressure inside the high-pressure system exceeds the ultimate bearing capacity of the container, the explosion-proof screw 36 will be broken and released in a short time, and the high-pressure gas will be quickly released, thereby reducing the pressure and reducing the harm, thereby protecting personnel and equipment from the impact and damage of the high-pressure gas.

[0037] Further, in the embodiments of the present utility model application, please refer to Figure 7 The switch rotating rod 25 is provided with a waist-shaped protrusion 47, and the switch rotating plug 27 is provided with a waist-shaped groove 48. After the waist-shaped protrusion 47 is inserted into the waist-shaped groove 48, the contact area between the two is increased, and after the switch knob 26 is turned, a stronger torque can be transmitted, so that the high pressure resistance of the first-stage pressure reducing valve 1 can be further enhanced.

[0038] The present embodiment provides a marine escape life-saving respirator, which is connected as follows: the upper end of the carbon fiber gas cylinder 4 is sealed with a first-level pressure reducing valve 1, the first-level pressure reducing valve 1 is connected to an air supply hose 2, and the other end of the air supply hose 2 is connected to a second-level breathing valve 3.

[0039] The present embodiment provides a marine escape and life-saving respirator, in which the volume of the carbon fiber gas cylinder 4 is selected to be 1.1L, so the carbon fiber gas cylinder 4 can carry more compressed air, which increases the use time of the underwater respirator for personnel and ensures the safety of underwater personnel at the same time; the first-level pressure reducing valve 1 has the advantages of constant pressure, automatic pressure relief, lightness and compactness, and easy carrying. It reduces the pressure of 1Mpa~40Mpa high-pressure gas inside the 1.1L carbon fiber gas cylinder 4 to a stable low-pressure gas of less than or equal to 0.9Mpa, and the low-pressure gas flows into the second-level breathing valve 3 through the air supply hose 2. The second-level breathing valve 3 provides gas that can be breathed normally, and the maximum working pressure can reach 40Mpa, so that the compressed air capacity in the carbon fiber gas cylinder 4 is expanded, which increases the use time of the respirator for personnel underwater and further ensures the safety of underwater personnel.

[0040] This embodiment provides a marine escape life-saving respirator, please refer to Figure 6 The working principle of the first-stage pressure reducing valve 1 is as follows: in the initial state, the pressure reducing chamber piston 11 is affected by the elastic force of the pressure reducing chamber spring 12 and is pushed to the top of the pressure reducing chamber 10 by the pressure reducing chamber spring 12. By turning the switch knob 26, the gas channel in the switch knob 26 is opened, and the high-pressure gas passes through the gas path in the switch part 6 until it enters the pressure reducing chamber 10 through the gas path in the pressure reducing chamber piston 11. Under the gas pressure, the pressure reducing chamber piston 11 moves downward, the air inlet is close to being closed, the air intake volume is reduced, the gas expansion pressure is reduced, and the downward pressure of the gas and the upward thrust of the pressure reducing chamber spring 12 produce a dynamic balance. By fine-tuning the pressure reducing chamber 10 clockwise or counterclockwise, the force of the pressure reducing chamber spring 12 can be changed, thereby generating 0.6-0.9MPA of gas. Figure 6 The thick black line in the middle is the direction of the gas.

[0041] The present embodiment provides a marine escape and life-saving respirator. During normal use, the air pump inflates the carbon fiber gas cylinder 4 from the gas input part 7. After the barometer 37 displays a value of 40Mpa, the inflation is stopped. By turning the switch knob 26 of the first-stage pressure reducing valve 1, the compressed air in the carbon fiber gas cylinder 4 is converted and output through the first-stage pressure reducing valve 1 to output a stable low-pressure gas of less than or equal to 0.9Mpa. The low-pressure gas is output from the first-stage pressure reducing valve 1. If the output gas pressure exceeds 1.5MPa, the medium-pressure explosion-proof screw 41 on the first-stage pressure reducing valve 1 is opened to release the pressure and reduce the air pressure. The low-pressure gas flows into the second-stage breathing valve 3 through the air supply hose 2. The second-stage breathing valve 3 can ensure that the air is as easy to breathe as in a normal space, or even easier and effortless. The utility model has the advantages of constant pressure, automatic pressure relief, light weight and compactness, easy to carry, and long service life.

[0042] The beneficial effects of the utility model are as follows: the switch rotary plug 27 is controlled to rotate synchronously by the switch rotary rod 25, so that gas with higher pressure can enter the first-stage pressure reducing valve 1, and the switch part 6 can also open and close normally; the inflation male head 16 is sleeved with an inflation male head plug core 17, and an inflation one-way spring 18 is arranged behind the inflation male head plug core 17. This structure can withstand gas with higher pressure to be filled into the first-stage pressure reducing valve 1, and under the action of the one-way spring, there will be no backflow phenomenon.

[0043] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A marine life-saving respirator, characterized by: Including carbon fiber A gas cylinder (4), wherein the carbon fiber gas cylinder (4) is connected to a first-stage pressure reducing valve (1), wherein the first-stage pressure reducing valve (1) is connected to an air supply hose (2), and the other end of the air supply hose (2) is connected to a second-stage breathing valve (3); the first-stage pressure reducing valve (1) comprises a pressure reducing valve body (9), and the pressure reducing valve body (9) is provided with a switch part (6), a pressure reducing part (5), a gas input part (7), and a gas output part (8); the switch part (6) comprises a switch knob (26), and the switch knob (26) is connected to a switch fixing screw (23), and the external thread of the switch fixing screw (23) is threadedly connected to the pressure reducing valve body (9), and the switch fixing screw (23) is internally connected to a switch rotating rod (25), and the switch rotating rod (25) is connected to a switch rotating plug (27); the pressure reducing part (5 ) comprises a pressure reducing chamber (10), a pressure reducing chamber piston (11), a pressure reducing chamber spring (12), a pressure reducing chamber piston plug (13), and a pressure reducing chamber silicone sleeve (46), which are installed on the pressure reducing valve body (9) from top to bottom; the gas input part (7) comprises an inflation male head (16), the external thread of the inflation male head (16) is threadedly connected to the pressure reducing valve body (9), the inflation male head (16) is sleeved with an inflation male head plug core (17), and an inflation one-way spring (18) is arranged behind the inflation male head plug core (17); the gas output part (8) comprises a double-interface right-angle spherical joint rotating shaft (40), the double-interface right-angle spherical joint rotating shaft (40) is fixed to the pressure reducing valve body (9) through a right-angle spherical joint fixing shaft (39), and a medium-pressure explosion-proof screw (41) is arranged on the double-interface right-angle spherical joint rotating shaft (40).

2. The marine escape life-saving respirator according to claim 1 is characterized in that: The material of the pressure reducing valve body (9) is 316 stainless steel.

3. The marine life-saving respirator according to claim 1 is characterized in that: The switch fixing screw (23) is made of 316 stainless steel and is fully engaged with the threaded connection section of the pressure reducing valve body (9).

4. The marine escape life-saving respirator according to claim 1 is characterized in that: The material of the inflation male connector (16) is 316 stainless steel, and it is fully engaged with the threaded connection section of the pressure reducing valve body (9). The material of the inflation male connector sealing ring (22) on the inflation male connector (16) is fluororubber.

5. The marine escape life-saving respirator according to claim 1 is characterized in that: The pressure reducing valve body (9) is provided with an explosion-proof screw (36).

6. The marine life-saving respirator according to claim 1 is characterized in that: The switch rotating rod (25) is provided with a waist-shaped protrusion (47), and the switch rotating plug (27) is provided with a waist-shaped groove (48).

Images