A superimposed deep-sea flow self-compensating one-way throttle valve

Abstract

The present invention belongs to the technical field of deep-sea hydraulic systems and provides a superimposed deep-sea flow self-compensating one-way throttle valve, which includes a valve block, a one-way valve assembly, and a throttle valve assembly. The one-way valve assembly and the throttle valve assembly are arranged in parallel in the valve block, and the valve block and the one-way valve assembly are interference-fitted and threadedly connected to the throttle valve assembly. The first end of the throttle valve assembly extends out of the valve block, and the second end is placed in the control oil chamber of the valve block. The one-way valve assembly is installed in the oil inlet flow channel of the valve block. The first flow channel in the valve block connects the oil outlet of the one-way valve assembly and the oil inlet of the throttle valve assembly, the throttle valve outlet flow channel is connected to the oil outlet of the throttle valve assembly, and the second flow channel serves as the oil outlet flow channel of the one-way throttle valve. The one-way throttle valve of the present invention has a small size, light weight, high integration, and strong adaptability to full-sea working conditions. It can overcome the problem of unstable and declining output flow of the one-way throttle valve when working in a deep-sea hydraulic system, and has important engineering practical significance.

Description

Technical Field

[0001] The present invention relates to the technical field of deep-sea hydraulic systems, and in particular to a superimposed self-compensating one-way throttle valve for deep-sea use. Background Art

[0002] A one-way throttle valve is a flow control valve in a hydraulic system. Using a control mechanism, the valve core moves relative to the valve sleeve, adjusting the flow rate by changing the flow area of ​​the valve opening. Existing one-way throttle valves are primarily used on land, where their return oil pressure is close to atmospheric pressure, resulting in a stable output flow rate. However, when used in deepwater, deepwater hydraulic systems employ pressure compensation technology, introducing deepwater ambient pressure into the hydraulic system. This results in a return oil pressure that is comparable to the deepwater ambient pressure. This leads to a decrease in flow rate output and instability due to the time-varying nature of deepwater load and operating pressures, as well as a decrease in dynamic viscosity of the hydraulic oil due to increased density and viscosity at increasing depths. This slows down the hydraulic system's output speed and creates fluctuations. Furthermore, due to space and mass limitations, one-way throttle valves for deepwater applications have strict requirements for size and weight, making miniaturization a challenge for deepwater hydraulic control valves.

[0003] The existence of the above problems limits the practical engineering application of the one-way throttle valve for deep sea use, and is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] In response to the problems existing in the existing technology, the present invention proposes a superimposed deep-sea flow self-compensating one-way throttle valve, which can overcome the problem of unstable and decaying output flow of the one-way throttle valve when working in a deep-sea hydraulic system, and has important engineering practical significance.

[0005] The invention provides a superimposed deep-sea flow self-compensating one-way throttle valve, which comprises a valve block, a throttle valve assembly and a one-way valve assembly. The one-way valve assembly and the throttle valve assembly are arranged in parallel in the valve block, and the one-way valve assembly and the throttle valve assembly are connected through a flow channel inside the valve block; the first end face of the valve block is provided with an oil inlet and an oil return port, and the second end face is provided with an oil outlet and an oil return port; a control oil chamber is provided inside the valve block, the first end of the throttle valve assembly extends out of the valve block, and the second end is placed in the control oil chamber of the valve block; the valve block is also provided with an oil inlet flow channel, a first flow channel, a second flow channel, a throttle valve outlet flow channel, a third flow channel and a fourth flow channel, the one-way valve assembly is installed in the oil inlet flow channel of the valve block, the first flow channel is connected to the The oil outlet of the one-way valve assembly is connected to the oil inlet of the throttle valve assembly, the throttle valve outlet flow channel is connected to the oil outlet of the throttle valve assembly, and the second flow channel serves as the oil outlet flow channel of the one-way throttle valve; the throttle valve assembly includes a throttle valve body, an adjusting rod, a nylon compensation column, a rigid valve core, a throttle valve spring, a throttle valve sleeve and a flexible lining vibration absorber assembly; the first end of the throttle valve body is threadedly connected to the third end face of the valve block, the second end of the throttle valve body extends out of the valve block and is connected to the first end of the adjusting rod, and the second end of the adjusting rod extends out of the throttle valve body; the first end of the nylon compensation column is connected to the countersunk hole on the first end of the adjusting rod, and the second end of the nylon compensation column is connected to the first end of the rigid valve core ; The throttle valve sleeve is arranged in the control oil chamber of the valve block, and the second end of the throttle valve sleeve is connected to the first end of the throttle valve body; both ends of the throttle valve sleeve are provided with countersunk holes, and a central guide hole is provided in the middle, and triangular valve ports are evenly arranged circumferentially in the central guide hole; the second end of the rigid valve core is arranged in the second end countersunk hole of the throttle valve sleeve and is connected to the central guide hole of the throttle valve sleeve; the two ends of the throttle valve spring are respectively abutted against the first end face of the rigid valve core and the second end countersunk hole end face of the throttle valve sleeve; the flexible lining vibration damper assembly is arranged in the first end countersunk hole of the throttle valve sleeve; the one-way valve assembly includes a one-way valve sleeve, a one-way valve core, a one-way valve seat, a one-way valve spring, a one-way valve a spring seat and a one-way valve bracket, and the one-way valve core, one-way valve seat, one-way valve spring and one-way valve spring seat are all arranged inside the one-way valve sleeve; the one-way valve core is installed in the one-way valve seat, and the spherical surface of the one-way valve core abuts the inner hole of the first end of the one-way valve sleeve; the one-way valve spring seat is installed outside the one-way valve seat, and the two ends of the one-way valve spring abut the one-way valve spring seat and the one-way valve seat respectively; the first end of the one-way valve bracket is connected to the second end of the one-way valve sleeve, and the first end of the one-way valve bracket is provided with a circular valve port, and the one-way valve bracket is connected to the first flow channel through the circular valve port; the second end of the one-way valve bracket is connected to the oil inlet on the first end face of the valve block.

[0006] Preferably, the valve block and the one-way valve assembly are in interference fit, and the valve block and the throttle valve assembly are in threaded connection.

[0007] Preferably, the axis of the one-way valve assembly and the axis of the throttle valve assembly are perpendicular to each other.

[0008] Preferably, a third flow channel and a fourth flow channel are further provided inside the valve block, the first end of the third flow channel is connected to the oil outlet of the throttle valve assembly, the second end of the third flow channel is connected to the first end of the fourth flow channel, and the second end of the fourth flow channel is connected to the second flow channel.

[0009] Preferably, the flexible lining vibration absorber assembly includes a front vibration absorber, a rear vibration absorber and an elastic body, and the elastic body is nested in a shell formed by connecting the front vibration absorber and the rear vibration absorber.

[0010] Preferably, the axes of the throttle valve body, the throttle valve sleeve, the regulating rod, the rigid valve core, the nylon compensation column, the front vibration absorber, the rear vibration absorber and the elastic body are located on the same straight line.

[0011] Preferably, the axes of the one-way valve sleeve, the one-way valve core, the one-way valve seat, the one-way valve spring, the one-way valve spring seat and the one-way valve bracket are located on the same straight line.

[0012] Preferably, the number of triangular valve openings of the throttle valve sleeve is set to 4, and the number of circular valve openings of the one-way valve bracket is set to 4.

[0013] Preferably, the valve block is further provided with a plurality of oil paths parallel to the axis of the one-way valve assembly.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. Compared with other one-way throttle valves, the superimposed deep-sea flow self-compensating one-way throttle valve of the present invention has the advantages of small size, light weight, high integration, and strong adaptability to full-sea depth conditions. It can greatly alleviate the phenomenon of flow decay caused by the increase in sea depth and the subsequent increase in oil density and viscosity. It is suitable for use in the hydraulic systems of deep-sea equipment such as manned or unmanned submersibles and deep-sea oil exploration equipment at sea depths of 0 to 11,000 meters, and has important engineering practical significance.

[0016] 2. The stacked, self-compensating, one-way throttle valve for deepwater operation employs a triangular orifice design within the throttle housing. This design offers enhanced flow self-compensation compared to rectangular orifices and uncompensated orifices. Furthermore, the nylon compensating column ensures flow self-compensation at full ocean depth, compensating for flow attenuation caused by changes in the oil's physical properties as the ocean depth increases, ensuring accurate flow output at the valve port.

[0017] 3. In the superimposed deep-sea flow self-compensating one-way throttle valve of the present invention, the flexible lining vibration damper assembly and the control oil chamber of the valve block act to eliminate low-frequency pulsations, mainly used to eliminate pulsations of non-specific frequency bands caused by valve core opening and closing, actuator movement and load fluctuations in the hydraulic system. At the same time, the Helmholtz resonator composed of damping holes of different diameters in the rigid valve core has a good suppressive effect on specific frequency pulsations, which is used to eliminate pressure pulsations generated by deep-sea hydraulic pumps. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the superimposed deep-sea flow self-compensating one-way throttle valve of the present invention;

[0019] Figure 2 This is a cross-sectional view of the superimposed deep-sea flow self-compensating one-way throttle valve of the present invention;

[0020] Figure 3 A top view of the valve block of the superimposed deep-sea self-compensating one-way throttle valve of the present invention;

[0021] Figure 4 This is a bottom view of the valve block of the superimposed deep-sea self-compensating one-way throttle valve of the present invention;

[0022] Figure 5 for Figure 3 A-direction sectional view;

[0023] Figure 6 This is a schematic structural diagram of a throttle valve assembly of a superimposed deep-sea flow self-compensating one-way throttle valve according to the present invention;

[0024] Figure 7 This is a schematic structural diagram of the flexible lining vibration damper assembly of the superimposed deep-sea flow self-compensating one-way throttle valve of the present invention;

[0025] Figure 8 It is a cross-sectional view of the throttle valve sleeve of the superimposed deep-sea flow self-compensating one-way throttle valve of the present invention;

[0026] Figure 9 This is a schematic structural diagram of a one-way valve assembly of a superimposed deep-sea flow self-compensating one-way throttle valve according to the present invention;

[0027] Figure 10This is a hydraulic principle diagram of the superimposed deep-sea flow self-compensating one-way throttle valve of the present invention when oil is flowing in the forward direction.

[0028] Main reference numerals:

[0029] Valve block 1; throttle valve assembly 2; throttle valve sleeve 201; triangular valve port 20101; throttle valve sleeve retaining ring 202; throttle valve sleeve sealing ring 203; fixing wire 204; throttle valve body 205; adjusting rod sealing ring 206; adjusting rod retaining ring 207; adjusting rod 208; nylon compensation column 209; rigid valve core 210; throttle valve spring 211; rear shock absorber 212; elastic body 21 3; front shock absorber 214; one-way valve assembly 3; one-way valve oil port sealing ring 301; one-way valve bracket 302; one-way valve bracket sealing ring 303; one-way valve bracket retaining ring 304; retaining spring 305; one-way valve spring seat 306; one-way valve spring 307; one-way valve seat 308; one-way valve spool 309; one-way valve sleeve 310; first high-pressure ball plug 4; second high-pressure ball plug 5; third high-pressure ball plug 6. DETAILED DESCRIPTION

[0030] To fully describe the technical content, structural features, objectives and effects of the present invention, the following is a detailed description with reference to the accompanying drawings.

[0031] like Figures 1 to 10 As shown, the present invention provides a superimposed deep-sea flow self-compensating one-way throttle valve, which includes a valve block 1, a throttle valve assembly 2, a one-way valve assembly 3, and a first high-pressure ball plug 4, a second high-pressure ball plug 5, and a third high-pressure ball plug 6. The one-way valve assembly 3 and the throttle valve assembly 2 are arranged in parallel in the valve block 1, and the valve block 1 is interference-fitted with the one-way valve assembly 3 and is threadedly connected to the throttle valve assembly 2. The one-way valve assembly 3 and the throttle valve assembly 2 are connected by the flow channel inside the valve block 1, and the axis of the one-way valve assembly 3 is perpendicular to the axis of the throttle valve assembly 2. The first high-pressure ball plug 4, the second high-pressure ball plug 5, and the third high-pressure ball plug 6 are respectively threadedly connected to the valve block 1 and are used to seal the process holes in the valve block 1.

[0032] like Figure 3 and Figure 4 As shown, the first end face of the valve block 1 is provided with an oil inlet G and an oil return port E4, the second end face is provided with an oil outlet F and an oil return port E4, and through holes D1, D2, and D3 are used to fix the valve block 1. A control oil chamber is provided inside the valve block 1, and one end of the throttle valve assembly 2 extends out of the valve block 1, and the other end is placed in the control oil chamber of the valve block 1. Figure 5As shown, the valve block 1 is internally provided with an oil inlet channel, a first channel A, a second channel B, a throttle valve outlet channel C, a third channel H and a fourth channel I. The one-way valve assembly 3 is installed in the oil inlet channel of the valve block 1. The first channel A connects the oil outlet of the one-way valve assembly 3 and the oil inlet of the throttle valve assembly 2. The second channel B serves as the oil outlet channel of the one-way throttle valve. The first end of the throttle valve outlet channel C is connected to the oil outlet of the throttle valve assembly 2, and the second end is connected to the first end of the third channel H. The second end of the third channel H is connected to the first end of the fourth channel I. The second end of the fourth channel I is connected to the second channel B, so that the second channel B is connected to the throttle valve outlet channel C.

[0033] like Figure 2 、 Figure 6 and Figure 8 As shown, the throttle valve assembly 2 includes a throttle valve body 205, an adjusting rod 208, a nylon compensation column 209, a rigid valve core 210, a throttle valve spring 211, a throttle valve sleeve 201 and a flexible lining vibration absorber assembly, and the axes of the throttle valve body 205, the throttle valve sleeve 201, the adjusting rod 208, the rigid valve core 210, the nylon compensation column 209 and the flexible lining vibration absorber assembly are located on the same straight line.

[0034] The first end of the throttle valve body 205 is provided with external threads, which are threadedly connected to the internally threaded hole on the third end surface of the valve block 1. The second end of the throttle valve body 205 extends outside the valve block 1 and, through an internally threaded hole provided therein, mates with the external threads on the first end of the adjusting rod 208. The second end of the adjusting rod 208 extends outside the throttle valve body 205. The first end of the adjusting rod 208 is also provided with a countersunk hole. The first end of the nylon compensation column 209 is connected to the countersunk hole at the first end of the adjusting rod 208. The second end of the nylon compensation column 209 is connected to the first end of the rigid valve core 210. The rigid valve core 210 is provided with axial and radial damping holes. The adjusting rod sealing ring 206 and the adjusting rod retaining ring 207 are overfitted with the throttle valve body 205 to prevent the hydraulic oil in the throttle valve sleeve 201 from leaking through the second end of the adjusting rod 208.

[0035] The throttle valve housing 201 is mounted in the control oil chamber of the valve block 1. The second end of the throttle valve housing 201 is connected to the first end of the throttle valve body 205 via a fixing wire 204. The throttle valve housing 201 has counterbores at both ends and a central guide hole in the middle. Four triangular valve ports 20101 are evenly spaced circumferentially above the central guide hole. The second end of the rigid valve core 210 is mounted in the counterbores at the second end of the throttle valve housing 201 and connected to the central guide hole of the throttle valve housing 201, controlling the opening of the triangular valve ports 20101. The ends of the throttle valve spring 211 abut against the first end face of the rigid valve core 210 and the counterbores at the second end of the throttle valve housing 201, respectively.

[0036] The flexible lining damper assembly is arranged in the counterbore at the first end of the throttle valve sleeve 201, as shown in FIG. Figure 7 As shown, the flexible liner damper assembly includes a front damper 214, a rear damper 212, and an elastomer 213. After being installed through the countersunk hole at the first end of the throttle valve sleeve 201, the flexible liner damper assembly is secured by an interference fit between the rear damper 212 and the front damper 214. The hollow cylindrical elastomer 213 is nested within the housing formed by the front and rear dampers 214, bonded with oil-resistant adhesive. When pulsations of unspecified frequencies are generated by valve spool opening and closing, actuator movement, and load fluctuations in the hydraulic system, the compressibility of the elastomer 213 in the flexible liner damper assembly eliminates low-frequency pulsations.

[0037] like Figure 2 and Figure 9 As shown, the one-way valve assembly includes a one-way valve sleeve 310, a one-way valve core 309, a one-way valve seat 308, a one-way valve spring 307, a one-way valve spring seat 306 and a one-way valve bracket 302, and the axes of the one-way valve sleeve 310, the one-way valve core 309, the one-way valve seat 308, the one-way valve spring 307, the one-way valve spring seat 306 and the one-way valve bracket 302 are located on the same straight line.

[0038] The check valve core 309, check valve seat 308, check valve spring 307, and check valve spring seat 306 are all disposed within the check valve housing 310. The check valve core 309 is mounted within the check valve seat 308, with the spherical surface of the check valve core 309 abutting against the inner hole of the first end of the check valve housing 310. The check valve spring seat 306 is mounted outside the check valve seat 308. The ends of the check valve spring 307 abut against the check valve spring seat 306 and the check valve seat 308, respectively, and are secured by a retaining spring 305. The first end of the check valve support 302 is connected to the second end of the check valve housing 310, serving multiple functions: supporting the check valve assembly, restricting its position, and allowing oil flow. The first end of the check valve support 302 is provided with four circular valve ports, which communicate with the first flow channel A through these ports. The second end of the check valve bracket 302 communicates with the oil inlet G on the first end face of the valve block 1. The check valve oil port seal 301 seals the hydraulic oil at the oil inlet G, preventing it from diffusing to the second end face of the valve block 1 and achieving end-face sealing. The check valve bracket seal 303 and retaining ring 304 also provide a seal, preventing the hydraulic oil in the check valve assembly from leaking through the oil inlet passage.

[0039] The valve block 1 is also provided with a plurality of flow channels E1, E2, and E3 parallel to the axis of the one-way valve assembly 3, serving as oil circuits for the remaining valves in the stacking valve system.

[0040] like Figure 10 As shown, the present invention is a superimposed deep-sea flow self-compensating one-way throttle valve, and its specific working process is as follows:

[0041] (1) Forward oil flow

[0042] When the superimposed deep-sea flow self-compensating one-way throttle valve of the present invention is oiled in the forward direction, the hydraulic oil with a pressure value of P1 flows from the oil inlet G on the valve block 1 through the one-way valve bracket 302, flows into the first flow channel A, enters the throttle valve assembly 2, flows through the throttle valve sleeve 201, the front vibration absorber 214, the elastic body 213, and the rear vibration absorber 212, and flows out from the triangular valve port 20101 of the throttle valve sleeve 201, enters the control oil chamber of the valve block 1, and then flows into the throttle valve outlet flow channel C. The throttle valve outlet flow channel C is connected to the second flow channel B. After passing through the second flow channel B, the hydraulic oil flows out of the one-way throttle valve from the oil outlet F. At this time, the valve outlet pressure is P2. When the working pressure P1 increases (decreases), the liquid pressure increases (decreases), and the equilibrium state formed by the liquid pressure, liquid force and the throttle valve spring 211 is destroyed, causing the front end 210 of the adjusting rod to move to the right (left). Since the nylon compensation column 209 has a certain compressibility, the throttle valve assembly 2 is balanced in a new position. At this time, the triangular valve port opening of the throttle valve sleeve 201 changes. After balance, the nylon compensation column 209 is compressed to compensate for the increased liquid pressure, ensuring that the valve port opening remains unchanged, thereby keeping the outlet flow of the one-way throttle valve stable.

[0043] (2) Reverse oil flow

[0044] When the stacked, self-compensating, one-way throttle valve for deep-sea use of the present invention is reversely flowing, hydraulic oil enters through the oil outlet F on the valve block 1 and then primarily enters the one-way valve assembly 3 through the second flow channel B. The hydraulic pressure generated by the hydraulic oil acts on the spherical surface of the one-way valve spool 309. When the hydraulic pressure becomes greater than the spring force of the one-way valve spring 307, the one-way valve spool 309 is pushed open, allowing the hydraulic oil to pass through the one-way valve assembly 3. Simultaneously, a small amount of hydraulic oil flows through the third flow channel H and the fourth flow channel I, from the second flow channel B to the throttle valve outlet flow channel C, passes through the triangular valve port 20101 of the throttle valve sleeve 201, and after merging with the first flow channel A, it flows out of the one-way throttle valve through the one-way valve bracket and the oil inlet G of the valve block 1.

[0045] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A superimposed deep-sea flow self-compensating one-way throttle valve, characterized in that: It includes a valve block, a throttle valve assembly and a one-way valve assembly, wherein the one-way valve assembly and the throttle valve assembly are arranged in parallel in the valve block, and the one-way valve assembly and the throttle valve assembly are connected through a flow channel inside the valve block; An oil inlet and an oil return port are provided on a first end face of the valve block, and an oil outlet and an oil return port are provided on a second end face; a control oil chamber is provided inside the valve block, a first end of the throttle valve assembly extends out of the valve block, and a second end is placed in the control oil chamber of the valve block; an oil inlet flow channel, a first flow channel, a second flow channel, a throttle valve outlet flow channel, a third flow channel and a fourth flow channel are also provided inside the valve block, the one-way valve assembly is installed in the oil inlet flow channel of the valve block, the first flow channel connects the oil outlet of the one-way valve assembly and the oil inlet of the throttle valve assembly, the throttle valve outlet flow channel is connected to the oil outlet of the throttle valve assembly, and the second flow channel serves as an oil outlet flow channel of the one-way throttle valve; The throttle valve assembly includes a throttle valve body, an adjusting rod, a nylon compensation column, a rigid valve core, a throttle valve spring, a throttle valve sleeve and a flexible lining vibration damper assembly; the first end of the throttle valve body is threadedly connected to the third end surface of the valve block, the second end of the throttle valve body extends out of the valve block and is connected to the first end of the adjusting rod, and the second end of the adjusting rod extends out of the throttle valve body; the first end of the nylon compensation column is connected to the countersunk hole on the first end of the adjusting rod, and the second end of the nylon compensation column is connected to the first end of the rigid valve core; the throttle valve sleeve is arranged on the valve The control oil chamber of the block, the second end of the throttle valve sleeve is connected to the first end of the throttle valve body; both ends of the throttle valve sleeve are provided with countersunk holes, and a central guide hole is provided in the middle, and triangular valve ports are evenly arranged circumferentially on the central guide hole; the second end of the rigid valve core is arranged in the second end countersunk hole of the throttle valve sleeve and connected to the central guide hole of the throttle valve sleeve; the two ends of the throttle valve spring are respectively abutted against the first end face of the rigid valve core and the second end countersunk hole end face of the throttle valve sleeve; the flexible liner vibration damper assembly is arranged in the first end countersunk hole of the throttle valve sleeve; The one-way valve assembly includes a one-way valve sleeve, a one-way valve core, a one-way valve seat, a one-way valve spring, a one-way valve spring seat and a one-way valve bracket, and the one-way valve core, the one-way valve seat, the one-way valve spring and the one-way valve spring seat are all arranged inside the one-way valve sleeve; the one-way valve core is installed in the one-way valve seat, and the spherical surface of the one-way valve core abuts the inner hole of the first end of the one-way valve sleeve; the one-way valve spring seat is installed outside the one-way valve seat, and the two ends of the one-way valve spring abut the one-way valve spring seat and the one-way valve seat respectively; the first end of the one-way valve bracket is connected to the second end of the one-way valve sleeve, and the first end of the one-way valve bracket is provided with a circular valve port, and the one-way valve bracket is connected to the first flow channel through the circular valve port; the second end of the one-way valve bracket is connected to the oil inlet on the first end face of the valve block.

2. The superimposed deep-sea flow self-compensating one-way throttle valve according to claim 1 is characterized in that: The valve block and the one-way valve assembly are interference-fitted, and the valve block and the throttle valve assembly are threadedly connected.

3. The superimposed deep-sea flow self-compensating one-way throttle valve according to claim 2 is characterized in that: The axis of the one-way valve assembly and the axis of the throttle valve assembly are perpendicular to each other.

4. The superimposed deep-sea flow self-compensating one-way throttle valve according to claim 1 is characterized in that: A third flow channel and a fourth flow channel are also provided inside the valve block, the first end of the third flow channel is connected to the oil outlet of the throttle valve assembly, the second end of the third flow channel is connected to the first end of the fourth flow channel, and the second end of the fourth flow channel is connected to the second flow channel.

5. The superimposed deep-sea flow self-compensating one-way throttle valve according to claim 1, characterized in that: The flexible lining vibration absorber assembly includes a front vibration absorber, a rear vibration absorber and an elastic body, and the elastic body is nested in a shell formed by connecting the front vibration absorber and the rear vibration absorber.

6. The superimposed deep-sea self-compensating one-way throttle valve according to claim 5, characterized in that: The axes of the throttle valve body, the throttle valve sleeve, the regulating rod, the rigid valve core, the nylon compensation column, the front vibration absorber, the rear vibration absorber and the elastic body are located on the same straight line.

7. The superimposed deep-sea flow self-compensating one-way throttle valve according to claim 1, characterized in that: The axes of the one-way valve sleeve, the one-way valve core, the one-way valve seat, the one-way valve spring, the one-way valve spring seat and the one-way valve bracket are located on the same straight line.

8. The superimposed deep-sea flow self-compensating one-way throttle valve according to claim 1, characterized in that: The number of triangular valve openings of the throttle valve sleeve is set to 4, and the number of circular valve openings of the one-way valve bracket is set to 4.

9. The superimposed deep-sea self-compensating one-way throttle valve according to claim 1, characterized in that: The valve block is also provided with a plurality of oil paths parallel to the axis of the one-way valve assembly.

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