A pressure-maintaining submarine escape suit

Abstract

The present invention provides a pressure-maintaining submarine escape suit, comprising: a closed escape suit, an automatic flow regulating exhaust assembly; the automatic flow regulating exhaust assembly is fixed on the closed escape suit; the automatic flow regulating exhaust assembly has at least one pressure rating; when the air pressure in the closed escape suit is less than the rated value, the automatic flow regulating exhaust assembly reduces or stops exhausting. The advantage is that the exhaust speed is automatically adjusted or the exhaust is stopped by automatic pressure, which is equivalent to setting a decompression stop station at a position close to the sea level, without the need to manually control the pressure, and the pressure-maintaining escape function can be automatically realized, and the depth of safe escape is increased by more than 50%.

Description

Technical Field

[0001] The invention relates to an escape suit, in particular to a pressure-maintaining submarine escape suit. Background Art

[0002] Rapid ascent and escape is mainly based on the principle of non-decompression diving. When a submarine crashes, if the submarine is still at normal pressure, the crew can wear a rapid ascent and escape suit and enter the rapid pressure regulating cabin. While quickly filling water and supplying air to adjust the pressure balance between the cabin and the outside of the submarine, the rapid ascent and escape suit is inflated simultaneously. When the pressure is balanced, the upper cover of the pressure regulating cabin is opened, and the crew quickly ascends to the surface to escape and complete the crew's escape.

[0003] Since existing escape suits have no pressure-maintaining function, the crew members are directly exposed to a normal pressure environment after they quickly float to the surface of the water. Theoretically, the maximum safe escape depth is only about 200 meters. Summary of the invention

[0004] The invention provides a pressure-maintaining submarine escape suit, which automatically adjusts the exhaust speed or stops exhausting through automatic pressure, which is equivalent to setting up a decompression stop station at a position close to the sea level. It does not need to control the pressure manually, and can automatically realize the pressure-maintaining escape function, thereby increasing the safe escape depth by more than 50%, so as to overcome the defects of the prior art.

[0005] The present invention provides a pressure-maintaining submarine escape suit, comprising: a closed escape suit 1 and an automatic flow-regulating exhaust component; the automatic flow-regulating exhaust component is fixed on the closed escape suit 1; the automatic flow-regulating exhaust component has at least one pressure rating; when the air pressure in the closed escape suit 1 is less than the rated value, the automatic flow-regulating exhaust component reduces or stops exhausting.

[0006] Furthermore, the present invention provides a pressure-maintaining submarine escape suit, which may also have the following characteristics: the flow automatic regulating exhaust assembly includes an automatic regulating exhaust valve 500; the automatic regulating exhaust valve 500 includes a diving suit seat 510, a shell 520, an end cover 530, a movable valve body 540 and a first spring 550; the shell 520 has a connecting hole 521a and an isolation hole 521b; the connecting hole 521a and the isolation hole 521b are coaxial step holes 521, and the diameter of the connecting hole 521a is smaller than the diameter of the isolation hole 521b; a small flow outlet hole 523 penetrating the shell 520 is provided on the side wall of the connecting hole; the movable valve body 540 is arranged in the isolation hole 521b; the diameter of the movable valve body 540 is larger than the diameter of the connecting hole 521a, and smaller than the diameter of the isolation hole 521b; the end of the movable valve body 540 The surface can fit with the step surface of the step hole 521; the end cover 530 has a large flow air outlet 531; the end cover 530 is detachably or fixedly connected to one end of the isolation hole 521b of the shell 520; after connection, the isolation hole 521b is connected to the large flow air outlet 531; the first spring 550 is arranged between the movable valve body 540 and the end cover 530, that is, one end is against the movable valve body 540, and the other end is against the end cover 530; the diving suit seat 510 is fixed on the closed escape suit 1; the diving suit seat 510 has an air inlet 511; the diving suit seat 510 is detachably or fixedly sealed to one end of the connecting hole 521a of the shell 520; after connection, the air inlet 511 is connected to the connecting hole 521a; the air outlet of the large flow air outlet 531 is greater than the air outlet of the small flow air outlet 523.

[0007] Furthermore, the present invention provides a pressure-maintaining submarine escape suit, which may also have the following characteristics: the flow-automatic regulating exhaust assembly also includes a constant-flow exhaust valve 600; when the pressure inside the closed escape suit 1 is greater than the rated pressure value of the constant-flow exhaust valve 600, the constant-flow exhaust valve 600 exhausts air outwardly; when the pressure inside the closed escape suit 1 is less than the rated pressure value of the constant-flow exhaust valve 600, the constant-flow exhaust valve 600 is closed.

[0008] Furthermore, the present invention provides a pressure-maintaining submarine escape suit, which may also have the following characteristics: a sealing groove 541 is provided on the end surface of the movable valve body 540 that is in contact with the step surface of the step hole 521; and a sealing O-ring is provided in the sealing groove 541.

[0009] Furthermore, the present invention provides a pressure-maintaining submarine escape suit, which may also have the following characteristics: the movable valve body 540 has at least one guide key on its circumference; the isolation hole 521b of the shell 520 has a guide groove matching the guide key; the guide key is embedded in the guide groove and can move in the guide groove; or the movable valve body 540 has at least one guide groove on its circumference; the isolation hole 521b of the shell 520 has a guide key matching the guide key; the guide key is embedded in the guide groove and can move in the guide groove.

[0010] Furthermore, the present invention provides a pressure-maintaining submarine escape suit, which may also have the following characteristics: the flow-automatic regulating exhaust assembly includes at least one first exhaust valve 100 and at least one second exhaust valve 200; the first exhaust valve 100 and the second exhaust valve 200 are respectively fixed on the closed escape suit 1; the first exhaust valve 100 has a first pressure rating and a first exhaust volume; the second exhaust valve 200 has a second pressure rating and a second exhaust volume; the first pressure rating is greater than the second pressure rating; the first exhaust volume is greater than the second exhaust volume; when the pressure in the closed escape suit 1 is greater than the first pressure rating, the first exhaust valve 100 and the second exhaust valve 200 exhaust air to the outside at the same time; when the pressure in the closed escape suit 1 is less than the first pressure rating and greater than the second pressure rating, the first exhaust valve 100 is closed and the second exhaust valve 200 is exhausted alone; when the pressure in the closed escape suit 1 is less than the second pressure rating, both the first exhaust valve 100 and the second exhaust valve 200 are closed.

[0011] Furthermore, the present invention provides a pressure-maintaining submarine escape suit, which may also have the following characteristics: the flow-automatic regulating exhaust assembly includes at least one third exhaust valve; the third exhaust valve has a third pressure rating and a third exhaust volume; the second pressure rating is greater than the third pressure rating; when the pressure inside the closed escape suit 1 is greater than the third pressure rating, the third exhaust valve exhausts air outwardly; when the pressure inside the closed escape suit 1 is less than the third pressure rating, the third exhaust valve is closed.

[0012] Furthermore, the present invention provides a pressure-maintaining submarine escape suit, which may also have the following characteristics: the flow automatic regulating exhaust component also includes at least one micro-flow exhaust hole; the exhaust volume of the micro-flow exhaust hole is less than the exhaust volume of the second exhaust valve 200; the micro-flow exhaust hole is always in an exhaust state until the pressure inside and outside the closed escape suit 1 is the same.

[0013] Furthermore, the present invention provides a pressure-maintaining submarine escape suit, which may also have the following feature: an automatic flow regulating exhaust assembly is arranged at the breathing position of the closed escape suit 1 .

[0014] Furthermore, the present invention provides a pressure-maintaining submarine escape suit, which may also have the following feature: the hood of the closed escape suit 1 is detachable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the pressure-maintaining submarine escape suit in the first embodiment.

[0016] Figure 2 This is a diagram of the closed state of the large flow outlet of the automatic regulating exhaust valve in Example 1.

[0017] Figure 3This is a diagram of the open state of the large flow outlet of the automatic regulating exhaust valve in the first embodiment.

[0018] Figure 4 It is a schematic structural diagram of the pressure-maintaining submarine escape suit in the second embodiment.

[0019] Figure 5 This is a diagram of the open state of the constant flow exhaust valve in the second embodiment.

[0020] Figure 6 It is a schematic structural diagram of the pressure-maintaining submarine escape suit in the third embodiment. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Embodiment 1

[0023] Figure 1 It is a structural schematic diagram of the pressure-maintaining submarine escape suit in the first embodiment.

[0024] like Figure 1 As shown, the pressure-maintaining submarine escape suit in this embodiment includes: a closed escape suit 1 and an automatic flow regulating exhaust assembly. The closed escape suit 1 includes a chest and abdomen breathing chamber 1a.

[0025] In this embodiment, the flow rate automatic regulating exhaust component includes: an automatic regulating exhaust valve 500. Figure 2 As shown, the automatically regulating exhaust valve 500 includes a diving suit seat 510 , a housing 520 , an end cover 530 , a movable valve body 540 and a first spring 550 .

[0026] The housing 520 has a connecting hole 521a and an isolating hole 521b. The connecting hole 521a and the isolating hole 521b are coaxial step holes 521, and the diameter of the connecting hole 521a is smaller than the diameter of the isolating hole 521b. A small flow outlet hole 523 that penetrates the housing 520 is provided on the side wall of the connecting hole.

[0027] The movable valve body 540 is disposed in the isolation hole 521b. The diameter of the movable valve body 540 is larger than the diameter of the connecting hole 521a, and smaller than the diameter of the isolation hole 521b. The end surface of the movable valve body 540 can be fitted with the step surface of the step hole 521. The end surface of the movable valve body 540 that fits with the step surface of the step hole 521 is provided with a sealing groove 541. A sealing O-ring is provided in the sealing groove 541.

[0028] Preferably, at least one guide key can be set on the circumference of the movable valve body 540; the isolation hole 521b of the shell 520 has a guide groove matching the guide key; the guide key is embedded in the guide groove and can move in the guide groove; so that the movable valve body 540 does not move easily when moving in the isolation hole 521b, thereby playing a guiding role.

[0029] Of course, the guide groove may also be provided on the movable valve body 540, and the guide key may be provided on the isolation hole 521b, so as to achieve the same function.

[0030] The end cover 530 has a large flow outlet hole 531. The end cover 530 is detachably or fixedly connected to the end of the housing 520 where the isolation hole 521b is located. After the connection, the isolation hole 521b is connected to the large flow outlet hole 531.

[0031] The first spring 550 is disposed between the movable valve body 540 and the end cover 530 , that is, one end of the first spring 550 presses against the movable valve body 540 , and the other end presses against the end cover 530 .

[0032] The diving suit seat 510 can be fixed on the closed escape suit 1 by thermoplastic method. The diving suit seat 510 has an air inlet 511. The diving suit seat 510 and the end where the connecting hole 521a of the shell 520 are located are sealed by using threads and sealing rings. After connection, the air inlet 511 is connected with the connecting hole 521a. The air outlet of the large flow outlet 531 is greater than the air outlet of the small flow outlet 523.

[0033] Working principle of pressure-maintaining submarine escape suit:

[0034] like Figure 3 As shown, when the pressure in the chest and abdomen breathing cavity 1a of the closed escape suit 1 is greater than the external pressure and the preload force of the first spring 550, the air pressure of the closed escape suit 1 pushes the movable valve body 520 to the right, and the gas in the closed escape suit 1 is discharged outward from the large flow outlet 531 and the small flow outlet 523 at the same time.

[0035] During the buoyancy process, the pressure of the closed escape suit 1 gradually decreases. When the pressure in the chest and abdomen breathing cavity 1a of the closed escape suit 1 is less than the external pressure and the preload force of the first spring 550, the first spring 550 drives the movable valve body 520 to move leftward until the left end surface of the movable valve body 520 fits the step surface of the step hole 521. At this time, the large-flow outlet 531 is closed, and the air pressure in the closed escape suit 1 can only be discharged from the small-flow outlet 523.

[0036] It should be noted that the sizes of the large flow outlet hole 531 and the small flow outlet hole 523 are calculated according to the required flow rate, and the proportions are not as shown in the figure.

[0037] In addition, other structures of the closed escape suit 1 are the same as those of the existing quick escape suits, including an inflation interface and the like.

[0038] The embodiment provides a pressure-maintaining rapid buoyancy escape suit. After the crew reaches the surface of the water, the speed of the escape suit's exhaust is rapidly reduced, so that a certain pressure is still maintained inside the escape suit, preferably 6-9 meters of static water pressure, and then the pressure inside the escape suit is slowly reduced to 0 meters. This is equivalent to setting up a decompression stop at 6-9 meters, which can increase the depth of safe escape by more than 50%.

[0039] Embodiment 2

[0040] Figure 4 It is a schematic structural diagram of the pressure-maintaining submarine escape suit in the second embodiment.

[0041] like Figure 4 As shown, the pressure-maintaining submarine escape suit in this embodiment includes: a closed escape suit 1 and an automatic flow regulating exhaust assembly. The closed escape suit 1 includes a chest and abdomen breathing chamber 1a.

[0042] In this embodiment, the automatic flow regulating exhaust assembly includes: an automatic regulating exhaust valve 500 and a constant flow exhaust valve 600. Figure 5 As shown, the constant flow exhaust valve 600 also includes a diving suit seat, a shell, an end cover, a movable valve body and a first spring.

[0043] The constant flow exhaust valve 600 has the same structure as the automatic regulating exhaust valve 500 in the first embodiment except that the connecting hole of the shell does not have the small flow outlet hole 523 .

[0044] When the pressure in the chest and abdomen breathing cavity 1a of the closed escape suit 1 is greater than the external pressure and the preload force of the spring in the constant flow exhaust valve 600, the air pressure of the closed escape suit 1 will push open the movable valve body in the constant flow exhaust valve 600, and the gas in the closed escape suit 1 will be discharged to the outside.

[0045] When the pressure in the chest and abdomen breathing cavity 1a of the closed escape suit 1 is less than the external pressure and the preload force of the spring in the constant flow exhaust valve 600, the movable valve body in the constant flow exhaust valve 600 is reset and the constant flow exhaust valve 600 is closed.

[0046] The constant flow exhaust valve 600 has only two states, open and closed. The spring in the constant flow exhaust valve 600 has a different preload force from the first spring 550 in the automatic regulating exhaust valve 500, which can realize the adjustment of the three-stage exhaust pressure of the closed escape suit 1, so that the diver has an additional pressure maintaining process.

[0047] Embodiment 3

[0048] Figure 6 It is a schematic structural diagram of the pressure-maintaining submarine escape suit in the third embodiment.

[0049] like Figure 4As shown, the pressure-maintaining submarine escape suit in this embodiment includes: a closed escape suit 1 and an automatic flow regulating exhaust assembly. The closed escape suit 1 includes a chest and abdomen breathing chamber 1a.

[0050] In this embodiment, the automatic flow regulating exhaust assembly includes: a first exhaust valve 100 and a second exhaust valve 200. The first exhaust valve 100 and the second exhaust valve 200 have the same structure as the constant flow exhaust valve 600 in the second embodiment, and will not be described again.

[0051] The first exhaust valve 100 and the second exhaust valve 200 are respectively fixed on the closed escape suit 1. The first exhaust valve 100 has a first pressure rating and a first exhaust volume. The first pressure rating is the difference between the pressure inside the closed escape suit 1 and the spring preload in the first exhaust valve 100 and the ambient pressure. The second exhaust valve 200 has a second pressure rating and a second exhaust volume. The second pressure rating is the difference between the pressure inside the closed escape suit 1 and the spring preload in the second exhaust valve 200 and the ambient pressure. The first pressure rating is greater than the second pressure rating. The first exhaust volume is greater than the second exhaust volume. When the pressure inside the closed escape suit 1 is greater than the first pressure rating, the first exhaust valve 100 and the second exhaust valve 200 exhaust air to the outside at the same time. When the pressure inside the closed escape suit 1 is less than the first pressure rating and greater than the second pressure rating, the first exhaust valve 100 is closed and the second exhaust valve 200 is exhausted alone. When the pressure inside the closed escape suit 1 is less than the second pressure rating, both the first exhaust valve 100 and the second exhaust valve 200 are closed.

[0052] In this embodiment, the hood of the closed escape suit 1 is detachable.

[0053] The pressure-maintaining fast-floating escape suit provided in this embodiment is that when the crew exhausts air in the deep water area and quickly floats up to the mobile sea surface, the speed of the escape suit exhausting air outwards is rapidly reduced, so that a certain pressure is still maintained in the escape suit. When the second exhaust valve 200 is closed, the escape suit always maintains a static water pressure of 6-9 meters. After sleeping, the escapee can take off the hood after 5 minutes according to their own situation. This is equivalent to setting up a decompression stop at 6-9 meters, which can increase the depth of safe escape by more than 50%.

[0054] Modification 1 of Embodiment 3

[0055] In this variation, the automatic flow regulating exhaust assembly may further include a micro-flow exhaust hole. The exhaust volume of the micro-flow exhaust hole is smaller than the exhaust volume of the second exhaust valve 200. The micro-flow exhaust hole is always in an exhaust state until the pressure inside and outside the closed escape suit 1 is the same.

[0056] Modification 2 of Embodiment 3

[0057] In this embodiment, the automatic flow rate regulating exhaust assembly may further include a third exhaust valve. The structure of the third exhaust valve is the same as that of the fixed flow rate exhaust valve 600 in the second embodiment, and will not be described again.

[0058] The third exhaust valve has a third pressure rating and a third exhaust volume. The second pressure rating is greater than the third pressure rating. When the pressure in the closed escape suit 1 is greater than the third pressure rating, the third exhaust valve exhausts air outward. When the pressure in the closed escape suit 1 is less than the third pressure rating, the third exhaust valve is closed.

[0059] When the submarine's main diving depth is deeper, more exhaust stages are set to allow divers to have more decompression processes, ensuring their safety when escaping danger.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure-maintaining submarine escape suit, characterized in that: include, Closed escape suit (1), automatic flow regulating exhaust assembly; Wherein, the automatic flow regulating exhaust assembly is fixed on the closed escape suit (1); The automatic flow regulating exhaust assembly has at least one pressure rating; When the air pressure in the closed escape suit (1) is less than the rated value, the flow rate automatic regulating exhaust component reduces or stops exhausting; The flow rate automatic regulating exhaust component comprises an automatic regulating exhaust valve (500); The automatic regulating exhaust valve (500) comprises a diving suit seat (510), a housing (520), an end cover (530), a movable valve body (540) and a first spring (550); The shell (520) has a connecting hole (521a) and an isolating hole (521b); the connecting hole (521a) and the isolating hole (521b) are coaxial step holes (521); the diameter of the connecting hole (521a) is smaller than the diameter of the isolating hole (521b); and a small flow rate air outlet hole (523) penetrating the shell (520) is provided on a side wall of the connecting hole; The movable valve body (540) is arranged in the isolation hole (521b); the diameter of the movable valve body (540) is larger than the diameter of the connecting hole (521a) and smaller than the diameter of the isolation hole (521b); the end surface of the movable valve body (540) can be fitted with the step surface of the step hole (521); The end cover (530) has a large flow rate air outlet hole (531); the end cover (530) is detachably or fixedly connected to one end of the housing (520) where the isolation hole (521b) is located; after the connection, the isolation hole (521b) is connected to the large flow rate air outlet hole (531); The first spring (550) is arranged between the movable valve body (540) and the end cover (530), that is, one end of the first spring is pressed against the movable valve body (540), and the other end is pressed against the end cover (530); The diving suit seat (510) is fixed on the closed escape suit (1); the diving suit seat (510) has an air inlet (511); the diving suit seat (510) is detachably or fixedly sealedly connected to one end of the shell (520) where the communicating hole (521a) is located; after the connection, the air inlet (511) is in communication with the communicating hole (521a); The gas outlet volume of the large-flow gas outlet hole (531) is greater than the gas outlet volume of the small-flow gas outlet hole (523); The automatic flow regulating exhaust component further comprises a constant flow exhaust valve (600); When the pressure in the closed escape suit (1) is greater than the rated pressure value of the constant flow exhaust valve (600), the constant flow exhaust valve (600) exhausts air outwards; When the pressure in the closed escape suit (1) is lower than the rated pressure value of the constant flow exhaust valve (600), the constant flow exhaust valve (600) is closed; The movable valve body (540) has a sealing groove (541) on its end surface which abuts against the step surface of the step hole (521); A sealing O-ring is arranged in the sealing groove (541).

2. The pressure-maintaining submarine escape suit according to claim 1, characterized in that: in, The movable valve body (540) has at least one guide key on its circumference; the isolation hole (521b) of the housing (520) has a guide groove matching the guide key; the guide key is embedded in the guide groove and can move in the guide groove; Alternatively, the movable valve body (540) has at least one guide groove on its circumference; the isolation hole (521b) of the housing (520) has a guide key matching the guide key; the guide key is embedded in the guide groove and can move in the guide groove.

3. The pressure-maintaining submarine escape suit according to claim 1, Features: Wherein, the automatic flow regulating exhaust component comprises at least one first exhaust valve (100) and at least one second exhaust valve (200); The first exhaust valve (100) and the second exhaust valve (200) are respectively fixed on the closed escape suit (1); The first exhaust valve (100) has a first pressure rating and a first exhaust volume; The second exhaust valve (200) has a second pressure rating and a second exhaust volume; The first pressure rating is greater than the second pressure rating; The first exhaust volume is greater than the second exhaust volume; When the pressure in the closed escape suit (1) is greater than the first pressure rating, the first exhaust valve (100) and the second exhaust valve (200) exhaust air to the outside at the same time; When the pressure in the closed escape suit (1) is less than the first pressure rating and greater than the second pressure rating, the first exhaust valve (100) is closed and the second exhaust valve (200) is exhausted alone; When the pressure in the closed escape suit (1) is less than the second pressure rating, both the first exhaust valve (100) and the second exhaust valve (200) are closed.

4. The pressure-maintaining submarine escape suit as claimed in claim 3, Features: in, The automatic flow regulating exhaust assembly comprises at least one third exhaust valve; The third exhaust valve has a third pressure rating and a third exhaust volume; The second pressure rating is greater than the third pressure rating; When the pressure in the closed escape suit (1) is greater than the third pressure rating, the third exhaust valve exhausts air outwards; When the pressure in the closed escape suit (1) is lower than the third pressure rating, the third exhaust valve is closed.

5. The pressure-maintaining submarine escape suit according to claim 3 or 4, characterized in that: in, The automatic flow regulating exhaust assembly further comprises at least one micro-flow exhaust hole; The exhaust volume of the micro-flow exhaust hole is smaller than the exhaust volume of the second exhaust valve (200); The micro-flow exhaust hole is always in an exhaust state until the pressure inside and outside the closed escape suit (1) is the same.

6. The pressure-maintaining submarine escape suit according to any one of claims 1 to 4, characterized in that: in, The automatic flow regulating exhaust assembly is arranged at the breathing position of the closed escape suit (1).

7. The pressure-maintaining submarine escape suit according to any one of claims 1 to 4, characterized in that: in, The hood of the closed escape suit (1) is detachable.

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