Deep sea valve actuator with anti-stuck and anti-twisted valve stem

Abstract

The present application relates to the technical fields of valve actuator, and disclose a deep sea valve actuator with anti-stuck and anti-twisted valve rod, comprising a main body, the outer wall of the main body is fixedly connected with a spring chamber outer wall, the side of the main body away from the spring chamber outer wall is fixedly connected with a hydraulic cylinder, the inner wall of the main body is rotatably connected with a limiting device, the present application utilizes the movement of the piston, the drain port on the piston enters the overflow groove, the liquid also enters the overflow groove, the liquid flows out through the flow port communicated with the overflow groove, so that the liquid pressure in the working cavity of the hydraulic cylinder is rapidly reduced, effectively prevent the spring chamber from encountering external impact or seal failure, the gas in the spring chamber is rapidly discharged, the internal pressure of the spring chamber is rapidly reduced, the higher hydraulic pressure of the working cavity of the hydraulic cylinder can drive the connecting rod between the spring chamber and the hydraulic cylinder to displace instantaneously, thereby causing the valve to suddenly open or close, causing the pipeline damage problem.

Description

Technical Field

[0001] This invention relates to the field of valve actuator technology, specifically to a deep-sea valve actuator with anti-jamming and anti-twisting valve stem. Background Technology

[0002] Deep-sea valve actuators are core control devices for deep-sea pipeline control. They precisely control the opening and closing and flow regulation of various subsea valves through electric, hydraulic, or ROV drives. They have core functions such as low power consumption, fault-safe shutdown, redundant drive, and status visualization. They are made of corrosion-resistant special materials and pressure compensation design, which can withstand harsh conditions such as high pressure and corrosion. At the same time, they simplify the layout of subsea infrastructure, reduce the risk of hydraulic leakage, and enable rapid integration and remote monitoring through standardized interfaces. They provide efficient and reliable flow control for deep-sea energy development and environmental protection projects. During the service of deep-sea single-acting hydraulic actuators, when the spring chamber is subjected to external impact or seal failure, the gas inside the spring chamber leaks out rapidly, and the gas pressure inside the spring chamber drops sharply. The high hydraulic pressure in the working chamber of the hydraulic cylinder will instantly drive the connecting rod between the spring chamber and the hydraulic cylinder to shift, thereby causing the valve to suddenly open or close, resulting in pipeline damage. Summary of the Invention

[0003] To solve the above-mentioned technical problems, the present invention provides a deep-sea valve actuator with anti-jamming and anti-twisting valve stem, comprising a main body, a spring chamber outer wall fixedly connected to the outer wall of the main body, a hydraulic cylinder fixedly connected to the side of the main body away from the spring chamber outer wall, and a limiting device rotatably connected to the inner wall of the main body, and further comprising: A connecting mechanism is fixedly connected to the outer wall of the spring chamber. A sliding mechanism is slidably connected to the inner wall of the communicating mechanism; The partition mechanism is fixedly connected to the inner wall of the outer wall of the spring chamber; The spring chamber contains a return spring, and the extension rod of the hydraulic cylinder is connected to the return spring. When the extension rod of the hydraulic cylinder extends, it can compress the return spring from a free state to a compressed state. When the return spring changes from a compressed state to a free state, it causes the extension rod of the hydraulic cylinder to retract. When the valve gets stuck, the limiting device starts to work, so that when the actuator continues to work, the valve stem of the actuator will be disconnected from the valve stem, thereby preventing the valve stem from excessive twisting and breaking.

[0004] Preferably, the connecting mechanism includes: Piping assembly, the piping assembly is fixedly connected to the outer wall of the spring chamber; Overflow assembly, which is fixedly connected to the inner wall of the piping assembly; The hydraulic cylinder working chamber is controlled by a hydraulic station. The outer wall of the spring chamber is filled with inert gas. When the valve is not opened or closed, the pressure inside the hydraulic cylinder working chamber is similar to the external water pressure, and the gas pressure inside the outer wall of the spring chamber is similar to the external water pressure.

[0005] Preferably, the sliding mechanism includes: Piston assembly, the piston assembly is fixedly connected to the inner wall of the pipeline assembly; The flexible component is fixedly connected to the inner wall of the pipeline assembly; The release and accumulation of elastic potential energy by the elastic component both rely on the movement of the piston component.

[0006] Preferably, the partition mechanism includes: The partition assembly is fixedly connected to the inner wall of the outer wall of the spring chamber; The filter assembly is rotatably connected to the outer wall of the spring chamber. The filter component provides filtration for the environment of the partition component.

[0007] Preferably, the piping assembly includes a transmission pipe fixedly connected to the outer wall of the spring chamber, and a protective pipe fixedly connected to the side of the transmission pipe away from the outer wall of the spring chamber. The transmission pipe is connected to the outer wall of the spring chamber, the protective pipe is connected to the transmission pipe, and the side of the protective pipe away from the transmission pipe is connected to the working chamber of the hydraulic cylinder.

[0008] Preferably, the overflow assembly includes an overflow groove formed on the inner wall of the protective pipe, the inner wall of the protective pipe has a plurality of flow ports, and a blocking step is fixedly connected to the inner wall of the protective pipe. The flow ports are arranged in a circular array, and the flow ports connect to the overflow channel after passing over the blocking steps.

[0009] Preferably, the piston assembly includes a piston that is slidably connected to the inner wall of the protective tube, the outer wall of the piston has a plurality of drain ports, and the outer wall of the piston is fixedly connected to two sealing rings; Several vents are arranged in a circular array. The vents are located on the side of the piston away from the transmission pipe. The two sealing rings are made of hard rubber and are deformed by the pressure of the piston and the protective pipe.

[0010] Preferably, the elastic component includes a fixing plate fixedly connected to the inner wall of the protective tube, and a spring fixedly connected to the outer wall of the fixing plate; The fixed plate is a certain distance from the transmission pipe, and the side of the spring away from the fixed plate is fixedly connected to the piston. The spring is initially in a free state.

[0011] Preferably, the partition assembly includes a partition groove formed on the inner wall of the outer wall of the spring chamber, and a plurality of connecting plates are fixedly connected to the inner wall of the partition groove, and a plurality of connecting holes are formed on the inner wall of each of the connecting plates. Among them, several connecting plates are arranged in a linear array, and the connecting holes are arranged in a circular array.

[0012] Preferably, the filter assembly includes an inlet formed on the outer wall of the spring chamber, and a filter tube is threadedly connected to the outer wall of the inlet; The inner wall thread of the inlet is adapted to the outer wall thread of the filter tube.

[0013] The present invention has the following beneficial effects: (1) This invention utilizes the fact that when the air inside the spring chamber leaks rapidly, the pressure inside the outer wall of the spring chamber drops rapidly, which in turn causes the gas pressure on the left side of the piston to drop rapidly. The hydraulic pressure will quickly push the piston to move, and the drain port on the piston will enter the overflow groove. The liquid will also enter the overflow groove and flow out through the flow port connected to the overflow groove, which will cause the liquid pressure in the working chamber of the hydraulic cylinder to drop rapidly. Through the application of the above components, the problem of rapid gas leakage inside the spring chamber and rapid drop in air pressure inside the spring chamber when the spring chamber is subjected to external impact or seal failure is effectively prevented. The high hydraulic pressure in the working chamber of the hydraulic cylinder will instantly drive the connecting rod between the spring chamber and the hydraulic cylinder to shift, which will cause the valve to open or close suddenly and cause pipeline damage.

[0014] (2) This invention utilizes the characteristic of the above-mentioned equipment that the piston remains unchanged due to the balance between air pressure and hydraulic pressure. When the actuator opens or closes the valve, the working chamber of the hydraulic cylinder needs to be pressurized. The piston moves, and the spring is subjected to the force generated by the piston movement. The elastic potential energy of the spring can offset the increased pressure of the hydraulic cylinder, and the liquid cannot start to depressurize. After the valve opening and closing work is completed, under the combined action of gas pressure and spring force, the piston moves to the right, so that the piston returns to the position before pressurization. Through the application of the above components, the problem of hydraulic oil leakage caused by the pressurization of the working chamber pushing the piston to move when the hydraulic cylinder is working is effectively prevented.

[0015] (3) This invention utilizes the characteristic of a sharp drop in air pressure inside the outer wall of the spring chamber of the above-mentioned equipment. When the actuator is installed, the actuator is slowly hoisted to the construction position. At this time, external seawater enters the partition groove through the inlet. As the depth gradually increases, the pressure of the seawater in the partition groove is equal to that of the external seawater and gradually increases with the increase of the external seawater pressure. When the outer wall of the spring chamber leaks and the air pressure drops sharply, the double-layer partition and the internal connecting plate strengthen the pressure bearing of the outer wall of the spring chamber, reduce the degree of deformation of the outer wall of the spring chamber, and divide the outer wall of the spring chamber into two layers through the partition groove. When the outer layer is deformed or dented, it does not affect the strength of the inner layer. When the outer layer is damaged, the inner layer can continue to play a protective role. Through the application of the above components, the problem of a sharp drop in air pressure inside the outer wall of the spring chamber and strong deformation caused by external water pressure when the outer wall of the spring chamber leaks is effectively prevented.

[0016] (4) This invention utilizes the feature that seawater enters the above-mentioned equipment through the inlet and sets up a filter pipe at the inlet to filter out floating debris in the seawater from entering the partition groove and thus clogging the connecting plate. Furthermore, by setting threads on the outer wall of the spring chamber and the outer wall of the filter pipe, the filter pipe is threadedly connected to the inlet. When the filter pipe is clogged due to the growth of external microorganisms, the filter pipe can be unscrewed by an underwater robot and replaced with a new filter pipe. Due to the presence of external water pressure, the filter pipe is unlikely to fall off on its own. Through the application of the above components, the problem of external debris entering the partition groove and causing the connecting plate to be clogged, thus affecting the service life of the device, is effectively prevented, and the time for replacing the filter pipe is reduced. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 3 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 4 This is a schematic cross-sectional view of the overall structure of the present invention; Figure 5 This is a schematic cross-sectional view of the barrier mechanism of the present invention; Figure 6 For the present invention Figure 5 A magnified structural diagram of A in the middle; Figure 7 This is a schematic cross-sectional view of the connecting mechanism of the present invention; Figure 8 For the present invention Figure 7 A magnified structural diagram of B in the diagram; Figure 9 This is a cross-sectional schematic diagram of the sliding mechanism of the present invention.

[0019] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Connecting mechanism; 11. Pipeline assembly; 12. Overflow assembly; 13. Main body; 14. Spring chamber outer wall; 15. Hydraulic cylinder; 16. Limiting device; 111. Transmission pipe; 112. Protective pipe; 121. Overflow groove; 122. Flow port; 123. Blocking step; 2. Sliding mechanism; 21. Piston assembly; 22. Elastic assembly; 211. Piston; 212. Drain port; 213. Sealing ring; 221. Fixing plate; 222. Spring; 3. Baffle mechanism; 31. Baffle assembly; 32. Filter assembly; 311. Baffle groove; 312. Connecting plate; 313. Connecting hole; 321. Inlet; 322. Filter pipe. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1, please refer to Figures 1-4 This invention relates to a deep-sea valve actuator with anti-jamming and anti-twisting valve stem features, comprising a main body 13, a spring chamber outer wall 14 fixedly connected to the outer wall of the main body 13, a hydraulic cylinder 15 fixedly connected to the side of the main body 13 away from the spring chamber outer wall 14, and a limiting device 16 rotatably connected to the inner wall of the main body 13, and further comprising: Connecting mechanism 1 is fixedly connected to the outer wall of the outer wall 14 of the spring chamber. Sliding mechanism 2 is slidably connected to the inner wall of communicating mechanism 1; The partition mechanism 3 is fixedly connected to the inner wall of the outer wall 14 of the spring chamber; The spring chamber 14 contains a return spring, and the telescopic rod of the hydraulic cylinder 15 is connected to the return spring. When the telescopic rod of the hydraulic cylinder 15 extends, it can squeeze the return spring from a free state to a compressed state. When the return spring changes from a compressed state to a free state, the telescopic rod of the hydraulic cylinder 15 is retracted. When the valve gets stuck, the limiting device 16 starts to work, so that when the actuator continues to work, the valve stem of the actuator will be disconnected from the valve stem, thereby preventing the valve stem from excessive twisting and breaking.

[0022] Connecting mechanism 1 includes: Piping assembly 11 is fixedly connected to the outer wall of the spring chamber outer wall 14; Overflow component 12 is fixedly connected to the inner wall of pipe assembly 11; The working chamber of the hydraulic cylinder 15 is controlled by a hydraulic station. The inner wall of the spring chamber 14 is filled with inert gas. When the valve is not opened or closed, the pressure inside the working chamber of the hydraulic cylinder 15 is similar to the external water pressure, and the gas pressure inside the outer wall of the spring chamber 14 is similar to the external water pressure.

[0023] The sliding mechanism 2 includes: Piston assembly 21 is fixedly connected to the inner wall of pipeline assembly 11; The elastic component 22 is fixedly connected to the inner wall of the pipeline assembly 11; The release and accumulation of elastic potential energy by the elastic component 22 both rely on the movement of the piston component 21.

[0024] The partition mechanism 3 includes: Partition assembly 31 is fixedly connected to the inner wall of the outer wall 14 of the spring chamber; Filter assembly 32 is rotatably connected to the outer wall of the outer wall 14 of the spring chamber. The filter component 32 provides filtration for the environment of the partition component 31.

[0025] Example 2, please refer to Figures 3-9 The present invention is a deep-sea valve actuator with anti-jamming and anti-twisting valve stem. Based on Example 1, the pipeline assembly 11 includes a transmission pipe 111 fixedly connected to the outer wall of the spring chamber 14, and a protective pipe 112 fixedly connected to the side of the transmission pipe 111 away from the outer wall of the spring chamber 14. The transmission pipe 111 is connected to the outer wall 14 of the spring chamber, the protective pipe 112 is connected to the transmission pipe 111, and the side of the protective pipe 112 away from the transmission pipe 111 is connected to the working chamber of the hydraulic cylinder 15.

[0026] The overflow assembly 12 includes an overflow groove 121 formed on the inner wall of the protective tube 112, a plurality of flow ports 122 formed on the inner wall of the protective tube 112, and a blocking step 123 fixedly connected to the inner wall of the protective tube 112. The flow ports 122 are arranged in a circular array, and the flow ports 122 cross the blocking step 123 to connect to the overflow groove 121.

[0027] Piston assembly 21 includes a piston 211 that is slidably connected to the inner wall of the protective tube 112. The outer wall of piston 211 is provided with a plurality of drain ports 212. Two sealing rings 213 are fixedly connected to the outer wall of piston 211. Among them, several drain ports 212 are arranged in a circular array. The drain ports 212 are located on the side of the piston 211 away from the transmission pipe 111. The two sealing rings 213 are made of hard rubber. The sealing rings 213 are deformed by the compression of the piston 211 and the protective pipe 112. When the actuator is not working, such as Figure 8 As shown, at this time, the gas pressure on the left side of piston 211 is consistent with the liquid pressure on the right side of piston 211, thus keeping piston 211 stationary. When the outer wall 14 of the spring chamber is impacted by the outside, causing leakage, the air inside the outer wall 14 leaks rapidly, causing the internal pressure of the outer wall 14 to drop rapidly. This results in a sharp drop in the gas pressure on the left side of piston 211. Since the hydraulic pressure on the right side of piston 211 remains unchanged, the hydraulic pressure on the right side will quickly push piston 211 to the left until the outer wall of piston 211 contacts the blocking step. 123, thus the piston 211 stops moving. Since the inner diameter of the overflow groove 121 is larger than the inner diameter of the protective tube 112, at this time, the drain port 212 on the piston 211 enters the overflow groove 121, and the liquid also enters the overflow groove 121. The liquid flows out through the flow port 122 connected to the overflow groove 121, so that the liquid can enter the flow port 122 from the overflow groove 121 and then enter the space located to the left of the blocking step 123. This causes the liquid pressure on the right side of the piston 211, i.e., the working chamber of the hydraulic cylinder 15, to drop rapidly, making it difficult to push the extension rod of the hydraulic cylinder 15 to move towards the outer wall 14 of the spring chamber.

[0028] The elastic component 22 includes a fixing plate 221 fixedly connected to the inner wall of the protective tube 112, and a spring 222 fixedly connected to the outer wall of the fixing plate 221; Among them, the fixed plate 221 is a certain distance from the transmission pipe 111, and the side of the spring 222 away from the fixed plate 221 is fixedly connected to the piston 211. The initial state of the spring 222 is a free state. When there is no collision with the outer wall 14 of the spring chamber, the pressure on both sides of the piston 211 remains equal, and the piston 211 remains stationary. Figure 8As shown, when the actuator switches the valve, the working chamber of the hydraulic cylinder 15 needs to be pressurized, causing the hydraulic pressure on the right side of the piston 211 to be greater than the air pressure on the left side. The piston 211 moves to the left, and the spring 222 is subjected to the force generated by the movement of the piston 211. The spring 222 changes from a free state to a compressed state. Since the elastic force of the spring 222 is greater than the liquid pressure required for the hydraulic cylinder 15 to work, the elastic potential energy of the spring 222 can counteract the increased pressure of the hydraulic cylinder 15. The piston 211 cannot contact the blocking step 123, and the liquid cannot start to depressurize. After the valve switching operation is completed, the pressure in the working chamber of the hydraulic cylinder 15 gradually decreases. At this time, the spring 222 changes from a compressed state to a free state. Under the combined action of the gas pressure and the elastic force of the spring 222, the piston 211 moves to the right, so that the piston 211 returns to the position before pressurization.

[0029] The partition assembly 31 includes a partition groove 311 formed on the inner wall of the outer wall 14 of the spring chamber. A plurality of connecting plates 312 are fixedly connected to the inner wall of the partition groove 311, and a plurality of connecting holes 313 are formed on the inner wall of each of the connecting plates 312. Among them, several connecting plates 312 are arranged in a linear array, and connecting holes 313 are arranged in a circular array; When the actuator is installed, it is slowly hoisted to the construction position. At this time, external seawater enters the partition groove 311 through the inlet 321. The seawater gradually fills the interior of the partition groove 311 through the connection hole 313. As the depth gradually increases, the pressure of the seawater in the partition groove 311 remains equal to that of the external seawater and gradually increases with the increase of the external seawater pressure. When the outer wall 14 of the spring chamber leaks and the air pressure drops sharply, the double-layer partition and the internal connecting plate 312 strengthen the pressure resistance of the outer wall 14 of the spring chamber, reduce the degree of deformation of the outer wall 14 of the spring chamber, and divide the outer wall 14 of the spring chamber into two layers through the partition groove 311. When the outer layer is deformed or dented, it does not affect the strength of the inner layer, and when the outer layer is damaged, the inner layer can continue to play a protective role.

[0030] The filter assembly 32 includes an inlet 321 opened on the outer wall of the spring chamber 14, and a filter tube 322 is threadedly connected to the outer wall of the inlet 321. The inner wall thread of the inlet 321 is compatible with the outer wall thread of the filter tube 322; A filter pipe 322 is installed at the inlet 321 to filter out floating debris in the seawater from entering the partition groove 311 and thus preventing blockage of the connecting plate 312. The filter pipe 322 is threaded to the inlet 321 by threads on the outer wall of the spring chamber 14 and the outer wall of the filter pipe 322. When the filter pipe 322 is blocked due to the growth of external microorganisms, it can be unscrewed by an underwater robot and replaced with a new filter pipe 322. Due to the presence of external water pressure, the filter pipe 322 is unlikely to fall off on its own.

[0031] A specific application of this embodiment is as follows: In use, the actuator is installed above the valve. The working chamber of the hydraulic cylinder 15 is controlled by a hydraulic station. The inner wall 14 of the spring chamber is filled with inert gas. When the valve is not opened or closed, the pressure inside the working chamber of the hydraulic cylinder 15 is similar to the external water pressure, and the gas pressure inside the outer wall 14 of the spring chamber is similar to the external water pressure. When the valve is opened or closed, the telescopic rod of the hydraulic cylinder 15 is connected to the return spring. When the telescopic rod of the hydraulic cylinder 15 extends, it can squeeze the return spring from the free state to the compressed state. When the return spring changes from the compressed state to the free state, the telescopic rod of the hydraulic cylinder 15 is retracted. When the valve is stuck, the limiting device 16 starts to work, so that when the actuator continues to work, the valve stem of the actuator will be disconnected from the valve stem, thereby preventing the valve stem from excessive twisting and breaking.

[0032] When the actuator is not working, such as Figure 8As shown, at this time, the gas pressure on the left side of piston 211 is consistent with the liquid pressure on the right side of piston 211, thus keeping piston 211 stationary. When the outer wall 14 of the spring chamber is impacted by the outside, causing leakage, the air inside the outer wall 14 leaks rapidly, causing the internal pressure to drop rapidly. This results in a sharp drop in the gas pressure on the left side of piston 211. Since the hydraulic pressure on the right side of piston 211 remains unchanged, the hydraulic pressure on the right side will quickly push piston 211 to the left until the outer wall of piston 211 contacts the blocking step 123, thus stopping piston 211. Because the inner diameter of overflow groove 121 is larger than the inner diameter of protective pipe 112, overflow enters the drain port 212 on piston 211. Liquid also enters overflow tank 121 and flows out through flow port 122 connected to overflow tank 121. Thus, liquid can enter flow port 122 from overflow tank 121 and then enter the space located to the left of blocking step 123. This causes the liquid pressure in the working chamber of hydraulic cylinder 15 on the right side of piston 211 to drop rapidly, making it difficult to push the extension rod of hydraulic cylinder 15 towards the outer wall 14 of spring chamber. Through the application of the above components, it effectively prevents the rapid leakage of gas inside spring chamber when spring chamber encounters external impact or seal failure. The rapid drop in gas pressure inside spring chamber will cause the high hydraulic pressure in the working chamber of hydraulic cylinder to instantly drive the connecting rod between spring chamber and hydraulic cylinder to displace, thereby causing the valve to suddenly open or close, causing pipeline damage.

[0033] Utilizing the characteristic of the above-mentioned equipment that balances air and hydraulic pressure to keep piston 211 constant, when there is no collision with the outer wall 14 of the spring chamber, the pressure on both sides of piston 211 remains equal, and piston 211 remains stationary. Figure 8 As shown, when the actuator switches the valve, the working chamber of the hydraulic cylinder 15 needs to be pressurized, causing the hydraulic pressure on the right side of the piston 211 to be greater than the air pressure on the left side. The piston 211 moves to the left, and the spring 222 is subjected to the force generated by the movement of the piston 211. The spring 222 changes from a free state to a compressed state. Since the elastic force of the spring 222 is greater than the liquid pressure required for the hydraulic cylinder 15 to work, the elastic potential energy of the spring 222 can counteract the increased pressure of the hydraulic cylinder 15. The piston 211 cannot contact the blocking step 123, and the liquid cannot begin to depressurize. After the valve switching operation is completed, the pressure in the working chamber of the hydraulic cylinder 15 gradually decreases. At this time, the spring 222 changes from a compressed state to a free state. Under the combined action of the gas pressure and the elastic force of the spring 222, the piston 211 moves to the right, returning to the position before pressurization. Through the application of the above components, the problem of hydraulic oil leakage caused by the pressurization of the working chamber pushing the piston 211 to move during the operation of the hydraulic cylinder 15 is effectively prevented.

[0034] Taking advantage of the rapid drop in internal air pressure of the outer wall 14 of the spring chamber, when the actuator is installed, it is slowly hoisted to the construction position. At this time, external seawater enters the partition groove 311 through the inlet 321. The seawater gradually fills the partition groove 311 through the connecting hole 313. As the depth gradually increases, the pressure of the seawater in the partition groove 311 remains equal to that of the external seawater and gradually increases with the increase of the external seawater pressure. When the outer wall 14 leaks and the air pressure drops sharply, the double-layer partition and the internal connecting plate 312 strengthen the pressure resistance of the outer wall 14 and reduce the degree of deformation of the outer wall 14. Furthermore, the partition groove 311 divides the outer wall 14 into two layers. When the outer layer deforms or dents, it does not affect the strength of the inner layer. And when the outer layer is damaged, the inner layer can continue to play a protective role. Through the application of the above components, the problem of rapid drop in internal air pressure and strong deformation of the outer wall 14 due to external water pressure when the outer wall 14 leaks is effectively prevented.

[0035] Taking advantage of the fact that seawater enters through the inlet 321, a filter pipe 322 is installed at the inlet 321 to filter out floating debris from the seawater that could enter the partition groove 311 and clog the connecting plate 312. Furthermore, by providing threads on the outer wall of the spring chamber 14 and the outer wall of the filter pipe 322, which is threaded to the inlet 321, when the filter pipe 322 becomes clogged due to external microbial growth, it can be unscrewed by an underwater robot and replaced with a new one. Due to external water pressure, the filter pipe 322 is unlikely to detach on its own. The application of these components effectively prevents external debris from entering the partition groove 311 and causing blockage of the connecting plate 312, thus reducing the lifespan of the device and minimizing the time required to replace the filter pipe 322.

[0036] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A deep-sea valve actuator with anti-jamming and anti-twisting valve stem, comprising a main body, wherein a spring chamber outer wall is fixedly connected to the outer wall of the main body, a hydraulic cylinder is fixedly connected to the side of the main body away from the spring chamber outer wall, and a limiting device is rotatably connected to the inner wall of the main body, characterized in that, Also includes: A connecting mechanism, which is fixedly connected to the outer wall of the outer wall of the spring chamber; A sliding mechanism, which is slidably connected to the inner wall of the communicating mechanism; A partition mechanism, which is fixedly connected to the inner wall of the outer wall of the spring chamber; The spring chamber contains a return spring, and the extension rod of the hydraulic cylinder is connected to the return spring. When the extension rod of the hydraulic cylinder extends, it can compress the return spring from a free state to a compressed state. When the return spring changes from a compressed state to a free state, it causes the extension rod of the hydraulic cylinder to retract. When the valve gets stuck, the limiting device starts to work, so that when the actuator continues to work, the valve stem of the actuator will be disconnected from the valve stem, thereby preventing the valve stem from excessive twisting and breaking.

2. The deep-sea valve actuator with anti-jamming and anti-twisting valve stem according to claim 1, characterized in that: The communication mechanism includes: Piping assembly, which is fixedly connected to the outer wall of the spring chamber; An overflow assembly is fixedly connected to the inner wall of the pipeline assembly; The hydraulic cylinder working chamber is controlled by a hydraulic station. The outer wall of the spring chamber is filled with inert gas. When the valve is not opened or closed, the pressure inside the hydraulic cylinder working chamber is similar to the external water pressure, and the gas pressure inside the outer wall of the spring chamber is similar to the external water pressure.

3. A deep-sea valve actuator with anti-jamming and anti-twisting stem as described in claim 2, characterized in that: The sliding mechanism includes: A piston assembly, which is fixedly connected to the inner wall of the pipeline assembly; An elastic component is fixedly connected to the inner wall of the pipeline assembly; The release and accumulation of elastic potential energy by the elastic component both rely on the movement of the piston component.

4. A deep-sea valve actuator with anti-jamming and anti-twisting stem as described in claim 3, characterized in that: The barrier mechanism includes: A partition assembly, which is fixedly connected to the inner wall of the outer wall of the spring chamber; A filter assembly, which is rotatably connected to the outer wall of the outer wall of the spring chamber; The filter component provides filtration for the environment of the partition component.

5. A deep-sea valve actuator with anti-jamming and anti-twisting valve stem as described in claim 4, characterized in that: The piping assembly includes a transmission pipe fixedly connected to the outer wall of the spring chamber, and a protective pipe fixedly connected to the side of the transmission pipe away from the outer wall of the spring chamber. The transmission pipe is connected to the outer wall of the spring chamber, the protective pipe is connected to the transmission pipe, and the side of the protective pipe away from the transmission pipe is connected to the working chamber of the hydraulic cylinder.

6. A deep-sea valve actuator with anti-jamming and anti-twisting valve stem according to claim 5, characterized in that: The overflow assembly includes an overflow groove formed on the inner wall of the protective tube, the inner wall of the protective tube has a plurality of flow ports, and a blocking step is fixedly connected to the inner wall of the protective tube. The flow ports are arranged in a circular array, and the flow ports connect to the overflow channel after passing over the blocking steps.

7. A deep-sea valve actuator with anti-jamming and anti-twisting valve stem according to claim 6, characterized in that: The piston assembly includes a piston that is slidably connected to the inner wall of the protective tube, and the outer wall of the piston has a plurality of drain ports, and two sealing rings are fixedly connected to the outer wall of the piston; Several vents are arranged in a circular array. The vents are located on the side of the piston away from the transmission pipe. The two sealing rings are made of hard rubber and are deformed by the pressure of the piston and the protective pipe.

8. A deep-sea valve actuator with anti-jamming and anti-twisting stem as described in claim 7, characterized in that: The elastic component includes a fixing plate fixedly connected to the inner wall of the protective tube, and a spring fixedly connected to the outer wall of the fixing plate; The fixed plate is a certain distance from the transmission pipe, and the side of the spring away from the fixed plate is fixedly connected to the piston. The spring is initially in a free state.

9. A deep-sea valve actuator with anti-jamming and anti-twisting valve stem according to claim 8, characterized in that: The partition assembly includes a partition groove formed on the inner wall of the outer wall of the spring chamber. A plurality of connecting plates are fixedly connected to the inner wall of the partition groove, and a plurality of connecting holes are formed on the inner wall of each of the connecting plates. Among them, several connecting plates are arranged in a linear array, and the connecting holes are arranged in a circular array.

10. A deep-sea valve actuator with anti-jamming and anti-twisting valve stem according to claim 9, characterized in that: The filter assembly includes an inlet located on the outer wall of the spring chamber, and a filter tube is threadedly connected to the outer wall of the inlet. The inner wall thread of the inlet is adapted to the outer wall thread of the filter tube.

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