Pressure absorption device

Abstract

The utility model discloses a pressure absorbing device which comprises a piston cylinder, a piston rod, a piston rod, a piston rod and a piston rod, wherein the piston cylinder is arranged in an inner shell of an underwater vehicle; one end of the hydraulic pipeline is communicated and connected with one end of the piston cylinder, and the other end of the hydraulic pipeline is communicated and connected with a gap between the inner shell and the outer shell; the piston is connected into the piston cylinder in a sliding manner; one end of the guide rod is connected with the piston; the adjusting cylinder is communicated and connected to the middle part of the other end of the piston cylinder; the spring is connected to the outer side of the guide rod in a sleeving mode and located between the piston and the adjusting piece; the adjusting part is in threaded connection with the adjusting cylinder; and the other end of the guide rod is sleeved in the adjusting piece in a penetrating manner. The pressure absorbing device is reasonable in design, safe, reliable and capable of absorbing part of or all filling liquid pressure influences, reducing the pressure bearing strength of the inner shell, achieving the effect that pressure generated by deformation of the outer shell is absorbed and borne by the pressure absorbing device, and effectively preventing structural damage or failure caused by overlarge external pressure.

Description

Technical Field

[0001] The utility model relates to a pressure absorbing device, in particular to a device which adopts a spring and a piston to absorb excessive pressure. The device is mainly used for an underwater vehicle with a double-shell and belongs to the technical field of underwater vehicles. Background Art

[0002] At present, underwater vehicles with double-shells have a filling liquid between the inner and outer shells. When the underwater vehicle is subjected to strong impact or vibration, the hydraulic pressure on the outer shell of the underwater vehicle will be transmitted to the inner shell through the filling liquid between the two shells, which may cause uneven stress on the structure and cause potential safety hazards. This increases the strength requirements for the inner shell, and the designed inner shell thickness is too large, which is not conducive to product structure optimization and weight reduction design, will lead to an increase in overall production costs, and will also cause a burden on projects with limited budgets. In short, it is often very inconvenient.

[0003] Therefore, in order to avoid excessive influence of external hydraulic pressure on the inner shell of the double-shell underwater vehicle, reduce the pressure-bearing strength of the inner shell, and ensure the safety, economy and maintainability of the product, it is necessary to develop a rationally designed, stable and reliable pressure absorption device, which is the key to solving the above technical problems. Summary of the Invention

[0004] In response to the many defects and shortcomings in the above-mentioned background technology, the present invention has made improvements and innovations thereto, with the aim of providing a pressure absorption device with a reasonable design, safety and reliability. When the outer shell of an underwater vehicle collides, it can absorb part or all of the filling liquid pressure, reduce the pressure-bearing strength of the inner shell, and thereby achieve the pressure generated by the deformation of the outer shell being absorbed and borne by the pressure absorption device, effectively preventing structural damage or failure caused by excessive external pressure.

[0005] Another invention purpose of the utility model is the ingenious design of the pressure absorbing device, which ensures the reliability and stability of the underwater vehicle under various working conditions, enables the underwater vehicle to operate safely under extreme conditions, significantly improves the working efficiency of the equipment, brings higher working efficiency to the operation, and reduces the frequency of maintenance and replacement, thereby bringing higher economic benefits and safety guarantees.

[0006] In order to solve the above problems and achieve the above invention objectives, the pressure absorbing device of the present invention is realized by adopting the following design structure and the following technical solutions:

[0007] A pressure absorbing device, used for connection in an underwater vehicle (8), comprising:

[0008] A piston cylinder (1), the piston cylinder (1) is arranged in an inner shell (81) of an underwater vehicle (8);

[0009] A hydraulic pipeline (2), one end of the hydraulic pipeline (2) is connected to one end of the piston cylinder (1), and the other end of the hydraulic pipeline (2) is connected to the gap between the inner shell (81) and the outer shell (82);

[0010] A piston (3) is slidably connected in the piston cylinder (1);

[0011] A guide rod (4), one end of which is connected to the piston (3);

[0012] An adjusting cylinder (5), the adjusting cylinder (5) is connected to the middle of the other end of the piston cylinder (1);

[0013] A spring (6), the spring (6) is sleeved on the outside of the guide rod (4), and the spring (6) is located between the piston (3) and the adjusting member (7);

[0014] An adjusting member (7), the adjusting member (7) being threadedly connected to the adjusting cylinder (5);

[0015] The other end of the guide rod (4) is sleeved in the adjusting member (7).

[0016] Preferably, the piston cylinder (1) comprises:

[0017] Piston cylinder (11);

[0018] A first end cover (12), the first end cover (12) is connected to one end of the piston cylinder (11) through a fastener;

[0019] a second end cover (13), the second end cover (13) being connected to the other end of the piston cylinder (11) via a fastener;

[0020] The piston cylinder (11) is a cylindrical structure with two ends open and a hollow interior, and piston cylinder connection holes are provided at both ends of the piston cylinder (11);

[0021] Preferably, a mounting port for connecting to the hydraulic pipeline (2) is provided through the middle of the first end cover (12), a first end cover connecting hole adapted to the corresponding end of the piston cylinder (11) is provided on the outer periphery of one end of the first end cover (12), and a first end cover sealing groove is provided at the other end of the first end cover (12), and a first end cover sealing ring (121) is installed in the first end cover sealing groove;

[0022] The second end cover (13) comprises a sealing ring and a connecting cylinder connected to the middle of the sealing ring. The outer periphery of the sealing ring is provided with a second end cover connecting hole adapted to the corresponding end of the piston cylinder (11).

[0023] Preferably, the hydraulic pipeline (2) comprises a connecting pipe, connectors connected to both ends of the connecting pipe, and a pressure relief valve (21) connected to the middle of the connecting pipe.

[0024] Preferably, the piston (3) is a circular plate-shaped member as a whole, a circular piston sealing groove is provided inwardly in the middle of the outer periphery of the piston (3), a piston sealing ring (31) is installed in the piston sealing groove, and a piston connecting hole adapted to be connected to the guide rod (4) is provided in the middle of one end of the piston (3), wherein the diameter of the piston (3) is adapted to the inner diameter of the piston cylinder (11).

[0025] Preferably, the guide rod (4) is a circular rod-shaped member as a whole, one end of the guide rod (4) is provided with a connecting guide rod connector adapted to the piston connecting hole, and the other end of the guide rod (4) is provided with a keyway.

[0026] Preferably, the adjusting cylinder (5) is a cylindrical structure with two ends open and a hollow interior. The outer side of one end of the adjusting cylinder (5) is connected to the inner wall of the connecting cylinder of the second end cover (13), and the inner wall of the other end of the adjusting cylinder (5) is provided with an adjusting cylinder internal thread section.

[0027] Preferably, the adjusting member (7) includes an adjusting member body and an adjusting screw plug connected to one end of the adjusting member body. The adjusting member body as a whole is a cylindrical structure with two ends open and an interior hollow. The outer wall of the adjusting member body near the adjusting screw plug end is provided with an adjusting member external thread section adapted to the adjusting tube internal thread section.

[0028] Preferably, one end of the spring (6) is connected to the piston (3), and the other end of the spring (6) is connected to the adjusting screw plug of the adjusting member (7).

[0029] Preferably, the gap between the inner shell (81) and the outer shell (82) of the underwater vehicle (8) is filled with a filling liquid (83).

[0030] The working principle is: before use, the operator only needs to connect the pressure absorbing device of the above-mentioned design structure to the underwater vehicle (8) to form a whole for use. Specifically, when the underwater vehicle (8) is in motion, when the outer shell (82) of the underwater vehicle (8) is deformed, the overflow generated by the pressure of the filling liquid (83) between the inner shell (81) and the outer shell (82) enters the piston cylinder (11) of the pressure absorbing device through the hydraulic pipeline (2). Subsequently, the pressure of the filling liquid (83) will squeeze the piston (3) to move toward the regulating member (7). When the liquid pressure of the piston (3) is equal to the spring force of the spring (6), the piston (3) stops moving, and finally the pressure generated by the deformation of the outer shell (82) is absorbed by the pressure absorbing device and reduced, thereby reducing the pressure on the inner shell (81), thereby effectively preventing structural damage or failure caused by excessive external pressure.

[0031] Compared with the prior art, the beneficial effects of the present invention are:

[0032] 1. The utility model has a reasonable design, is safe and reliable, and can absorb part or all of the filling liquid pressure when the outer shell of the underwater vehicle collides, reducing the pressure-bearing strength of the inner shell. As a result, the pressure generated by the deformation of the outer shell is absorbed by the pressure absorbing device, effectively preventing structural damage or failure caused by excessive external pressure.

[0033] 2. The ingenious design of the pressure absorption device of this utility model ensures the reliability and stability of the underwater vehicle under various working conditions, enabling it to operate safely under extreme conditions. This significantly improves the working efficiency of the equipment, brings higher work efficiency to the operator, and reduces the frequency of maintenance and replacement, thereby achieving higher economic benefits and safety assurance.

[0034] 3. The utility model not only reduces the burden on the inner shell and improves its pressure resistance, but also effectively prevents structural damage or failure caused by excessive external pressure;

[0035] 4. The utility model enables the device to maintain good absorption effect and durability during long-term use, thereby ensuring the overall safety and service life of the underwater vehicle;

[0036] 5. The utility model has high flexibility. The spring not only has the function of resetting the piston, but also can preset the pressure of the piston by rotating the adjusting member to change the length of the spring between the piston and the adjusting member. This pressure can balance the pressure of the filling liquid acting on the piston, thereby controlling the pressure value of the inner shell;

[0037] 6. The filling liquid of the utility model can completely enter the piston cylinder of the pressure absorbing device, so that the inner shell is basically not subjected to hydraulic pressure;

[0038] 7. The pressure relief valve on the hydraulic pipeline of this utility model can protect the pressure absorption device from the influence of excessive pressure. When the pressure in the hydraulic pipeline exceeds the set threshold, the pressure relief valve will automatically open to release the excess pressure, thus preventing the pressure absorption device from being damaged due to excessive pressure.

[0039] 8. The utility model can prevent the inner shell of the double-shell underwater navigation body from being excessively affected by external hydraulic pressure, reduce the pressure-bearing strength of the inner shell, and ensure the safety, economy and maintainability of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

[0041] Figure 1 This is one of the usage state diagrams of the utility model;

[0042] Figure 2 This is the second diagram of the use state of the utility model;

[0043] Figure 3 This is the third diagram of the use state of the utility model;

[0044] Figure 4 This is the fourth diagram of the use state of the utility model;

[0045] Figure 5 It is a schematic diagram of the overall structure of the utility model;

[0046] Figure 6 It is an exploded view of the utility model;

[0047] Figure 7 It is a cross-sectional view of the local structure of the utility model;

[0048] Among them, the numbers in the figure are: 1-piston cylinder, 11-piston cylinder body, 12-first end cover, 121-first end cover sealing ring, 13-second end cover;

[0049] 2—hydraulic pipeline, 21—pressure relief valve;

[0050] 3—piston, 31—piston sealing ring;

[0051] 4—guide rod;

[0052] 5—adjustment cylinder;

[0053] 6—spring;

[0054] 7—Adjustment piece;

[0055] 8—underwater vehicle, 81—inner shell, 82—outer shell, 83—filling fluid. DETAILED DESCRIPTION

[0056] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the technical solution of the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other unless there is a conflict. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0057] A pressure absorbing device as shown in the accompanying drawings of the specification is used for connection to an underwater vehicle 8, and comprises:

[0058] The piston cylinder 1 is disposed in the inner shell 81 of the underwater vehicle 8;

[0059] A hydraulic line 2, one end of which is connected to one end of the piston cylinder 1, and the other end of which is connected to the gap between the inner shell 81 and the outer shell 82;

[0060] The piston 3 is slidably connected in the piston cylinder 1;

[0061] A guide rod 4, one end of which is connected to the piston 3;

[0062] The regulating cylinder 5 is connected to the middle of the other end of the piston cylinder 1;

[0063] Spring 6, spring 6 is sleeved on the outside of the guide rod 4, and spring 6 is located between the piston 3 and the adjusting member 7;

[0064] An adjusting member 7 is threadedly connected to the adjusting cylinder 5;

[0065] The other end of the guide rod 4 is sleeved in the adjusting member 7 .

[0066] Further, such as Figure 6 As shown, the piston cylinder 1 includes:

[0067] Piston cylinder 11;

[0068] A first end cover 12, the first end cover 12 is connected to one end of the piston cylinder 11 through a fastener;

[0069] A second end cover 13, which is connected to the other end of the piston cylinder 11 through a fastener;

[0070] The piston cylinder 11 is a cylindrical structure with two ends open and a hollow interior. Both ends of the piston cylinder 11 are provided with piston cylinder connection holes.

[0071] Specifically, such as Figure 6 As shown, a mounting port for connecting to the hydraulic pipeline 2 is formed through the middle of the first end cover 12, a first end cover connecting hole adapted to the corresponding end of the piston cylinder 11 is formed on the outer periphery of one end of the first end cover 12, and a first end cover sealing groove is formed at the other end of the first end cover 12, and a first end cover sealing ring 121 is installed in the first end cover sealing groove;

[0072] The second end cover 13 includes a sealing ring and a connecting tube connected to the middle of the sealing ring. The outer periphery of the sealing ring is provided with a second end cover connecting hole adapted to the corresponding end of the piston cylinder 11 .

[0073] Further, such as Figure 6 As shown, the hydraulic pipeline 2 includes a connecting pipe, connectors connected to both ends of the connecting pipe, and a pressure relief valve 21 connected to the middle of the connecting pipe.

[0074] Further, such as Figure 6As shown, the piston 3 is a circular plate-shaped component as a whole, and a circular piston sealing groove is opened inwardly in the middle of the outer periphery of the piston 3, and a piston sealing ring 31 is installed in the piston sealing groove. A piston connecting hole is opened in the middle of one end of the piston 3 to be adapted for connection with the guide rod 4, wherein the diameter of the piston 3 is adapted to the inner diameter of the piston cylinder 11.

[0075] Further, such as Figure 5 As shown, the guide rod 4 is a circular rod-shaped component as a whole. One end of the guide rod 4 is provided with a connecting guide rod connector adapted to the piston connecting hole, and the other end of the guide rod 4 is provided with a key groove.

[0076] In the present invention, the guide rod connecting head and the piston connecting hole are threadedly connected or fixedly connected.

[0077] Further, such as Figure 6 As shown, the adjusting cylinder 5 is a cylindrical structure with both ends open and the interior hollow. The outer side of one end of the adjusting cylinder 5 is connected to the inner wall of the connecting cylinder of the second end cover 13, and the inner wall of the other end of the adjusting cylinder 5 is provided with an adjusting cylinder internal thread section.

[0078] Further, such as Figure 3 and Figure 6 as well as Figure 7 As shown, the adjusting member 7 includes an adjusting member body and an adjusting plug connected to one end of the adjusting member body. The adjusting member body as a whole is a cylindrical structure with openings at both ends and a hollow interior. The outer wall of the adjusting member body near the adjusting plug end is provided with an adjusting member external thread section that is adapted to the internal thread section of the adjusting tube.

[0079] In the present invention, the adjusting member 7 is tightened or loosened by rotation, and the initial force applied by the spring 6 to the piston 3 can be preset, so that the pressure in the piston cylinder 1 can be adjusted.

[0080] Further, such as Figure 1 and Figure 4 As shown, one end of the spring 6 is connected to the piston 3 , and the other end of the spring 6 is connected to the adjusting screw plug of the adjusting member 7 .

[0081] In the present invention, the spring 6 is located inside the regulating cylinder 5 and the piston cylinder body 11 or inside the regulating cylinder 5 .

[0082] Further, such as Figure 1 As shown, the gap between the inner shell 81 and the outer shell 82 of the underwater vehicle 8 is filled with a filling liquid 83.

[0083] In summary, the more specific implementation methods of the present invention are:

[0084] Before using a pressure absorbing device of the above-mentioned design structure, it needs to be installed as a backup.

[0085] Before installation, the operator only needs to carry the utility model to the designated working position manually or with corresponding carrying equipment to install it as a standby.

[0086] During installation, the operator only needs to connect the pressure absorbing device of the above-mentioned design structure to the underwater vehicle 8 to form a whole for use.

[0087] When in use, the underwater vehicle 8 equipped with the pressure absorbing device is placed in water for operation. When in operation, the underwater vehicle 8 is turned on and operated. Figure 3 As shown, when the outer shell 82 of the underwater vehicle 8 is deformed, the overflow generated by the pressure of the filling liquid 83 between the inner shell 81 and the outer shell 82 enters the piston cylinder 11 of the pressure absorbing device through the hydraulic pipeline 2. Subsequently, the pressure of the filling liquid 83 will squeeze the piston 3 to move toward the adjusting member 7. When the liquid pressure of the piston 3 is equal to the spring force of the spring 6, the piston 3 stops moving, and finally the pressure generated by the deformation of the outer shell 82 is absorbed by the pressure absorbing device and reduced, thereby reducing the pressure on the inner shell 81, thereby effectively preventing structural damage or failure caused by excessive external pressure.

[0088] During the above-mentioned use, the pressure relief valve 21 on the hydraulic pipeline 2 can protect the pressure absorption device from the influence of excessive pressure. When the pressure in the hydraulic pipeline 2 exceeds the set threshold, the pressure relief valve 21 will automatically open to release the excess pressure, thereby preventing the pressure absorption device from being damaged due to excessive pressure and other accidents. In this way, the inner shell of the double-shell underwater navigation body can be prevented from being excessively affected by the external hydraulic pressure, the pressure-bearing strength of the inner shell can be reduced, and the safety, economy and maintainability of the product can be ensured.

[0089] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and does not constitute any other limitation to the present invention. Any person skilled in the art may utilize the above-disclosed technical content to modify or remodel the present invention into equivalent embodiments. However, any simple modifications, equivalent variations, and modifications to the above embodiments that do not depart from the technical content of the present invention and are based on the technical essence of the present invention shall still fall within the scope of protection of the present invention.

Claims

1. A pressure absorbing device for use in connection with an underwater vehicle (8), characterized in that it include: A piston cylinder (1), the piston cylinder (1) is arranged in an inner shell (81) of an underwater vehicle (8); A hydraulic pipeline (2), one end of the hydraulic pipeline (2) is connected to one end of the piston cylinder (1), and the other end of the hydraulic pipeline (2) is connected to the gap between the inner shell (81) and the outer shell (82); A piston (3) is slidably connected in the piston cylinder (1); A guide rod (4), one end of which is connected to the piston (3); An adjusting cylinder (5), the adjusting cylinder (5) is connected to the middle of the other end of the piston cylinder (1); A spring (6), the spring (6) is sleeved on the outside of the guide rod (4), and the spring (6) is located between the piston (3) and the adjusting member (7); An adjusting member (7), the adjusting member (7) being threadedly connected to the adjusting cylinder (5); The other end of the guide rod (4) is sleeved in the adjusting member (7).

2. A pressure absorbing device according to claim 1, characterized in that: The piston cylinder (1) comprises: Piston cylinder (11); A first end cover (12), the first end cover (12) being connected to one end of the piston cylinder (11) via a fastener; a second end cover (13), the second end cover (13) being connected to the other end of the piston cylinder (11) via a fastener; The piston cylinder (11) as a whole is in the form of a columnar structure with both ends open and the interior hollow, and piston cylinder connection holes are provided at both ends of the piston cylinder (11).

3. A pressure absorbing device according to claim 2, characterized in that: A mounting port for connecting to the hydraulic pipeline (2) is provided through the middle of the first end cover (12); a first end cover connecting hole adapted to the corresponding end of the piston cylinder (11) is provided on the outer periphery of one end of the first end cover (12); a first end cover sealing groove is provided at the other end of the first end cover (12); a first end cover sealing ring (121) is installed in the first end cover sealing groove; The second end cover (13) comprises a sealing ring and a connecting cylinder connected to the middle of the sealing ring. The outer periphery of the sealing ring is provided with a second end cover connecting hole adapted to the corresponding end of the piston cylinder (11).

4. A pressure absorbing device according to claim 1, characterized in that: The hydraulic pipeline (2) comprises a connecting pipe, connectors connected to both ends of the connecting pipe, and a pressure relief valve (21) connected to the middle of the connecting pipe.

5. The pressure absorbing device according to claim 1, characterized in that: The piston (3) is a circular plate-shaped member as a whole. A circular piston sealing groove is provided inwardly at the middle of the outer periphery of the piston (3). A piston sealing ring (31) is installed in the piston sealing groove. A piston connecting hole adapted to be connected to the guide rod (4) is provided in the middle of one end of the piston (3). The diameter of the piston (3) is adapted to the inner diameter of the piston cylinder (11).

6. A pressure absorbing device according to claim 1, characterized in that: The guide rod (4) is a circular rod-shaped member as a whole. One end of the guide rod (4) is provided with a connecting guide rod connector adapted to the piston connection hole, and the other end of the guide rod (4) is provided with a keyway.

7. A pressure absorbing device according to claim 1, characterized in that: The regulating tube (5) is a cylindrical structure with two open ends and a hollow interior. The outer side of one end of the regulating tube (5) is connected to the inner wall of the connecting tube of the second end cover (13), and the inner wall of the other end of the regulating tube (5) is provided with an regulating tube internal thread section.

8. The pressure absorbing device according to claim 1, characterized in that: The adjusting member (7) comprises an adjusting member body and an adjusting screw plug connected to one end of the adjusting member body. The adjusting member body is in the shape of a column with two ends open and an interior hollow. An outer wall of the adjusting member body near the end of the adjusting screw plug is provided with an adjusting member outer thread section adapted to the inner thread section of the adjusting tube.

9. The pressure absorbing device according to claim 1, characterized in that: One end of the spring (6) is connected to the piston (3), and the other end of the spring (6) is connected to the adjusting screw plug of the adjusting member (7).

10. The pressure absorbing device according to claim 1, characterized in that: The gap between the inner shell (81) and the outer shell (82) of the underwater vehicle (8) is filled with a filling liquid (83).

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