Subsea deep-sea bottom-sitting anti-blocking jetting device and working method thereof

Abstract

The application discloses a seabed deep-sea bottom-sitting anti-blocking jetting device and a working method thereof. The device comprises a device body and at least one anti-blocking nozzle assembly. The device body forms an installation channel and a first opening and a second opening respectively communicated with the installation channel at two ends. The anti-blocking nozzle assembly comprises a blocking nozzle, a moving nozzle, a guide and an elastic element. The blocking nozzle is fixed on the inner wall of the installation channel, and the middle part of the blocking nozzle forms a flow passage communicated with the installation channel. The moving nozzle is provided with at least one jetting hole staggered with the flow passage. The moving nozzle is fixedly connected to one end of the guide. The other end of the guide is arranged to pass through the flow passage, and the guide is movably installed on the inner wall of the installation channel along an axis defined by the opposite direction of the first opening and the second opening. The elastic element is arranged between the guide and the moving nozzle in a manner tending to force the moving nozzle to press against the side of the blocking nozzle towards the second opening. The cross-sectional size of the flow passage is larger than that of the guide.

Description

Technical Field

[0001] This invention relates to the field of anti-clogging spraying for deep-sea submersible bottom-mounted platforms, and particularly to an anti-clogging spraying device for deep-sea submersible bottom-mounted platforms and its working method. Background Technology

[0002] The ascent of a deep-sea submersible platform often involves breaking the seabed after prolonged submersion. This addresses the issue of the platform becoming stuck on the seabed after extended periods. During ascent, a jet spraying system is needed to overcome the adhesion of the surrounding clay and the resistance of the mud. Therefore, the design of the platform's ascent system often includes the design of a jet spraying system. The high-pressure jet spraying system's high-pressure jet spraying lines connect to the bottom of the platform's lower hull and ultimately to the nozzle structure at the bottom.

[0003] The nozzles used in traditional mobile deep-sea submersible bottom-mounted spraying systems suffer from reduced channel area and even blockages in the nozzles and spraying pipes due to the complex seabed environment and long-term platform occupancy. This results in unsatisfactory spraying effects and energy waste, seriously affecting the operation of the high-pressure spraying system.

[0004] Currently, additional protective structures are often used to address this issue. For example, Chinese patent document CN116022317A discloses a high-pressure jetting system for a deep-sea submersible wind power installation platform. This system uses a method where "the jetting nozzle is configured as a nozzle structure, a protective net is installed at the jetting nozzle, and end inclined plates are installed on both sides of the outer half-pipe of the jetting nozzle. The protective net and the end inclined plates simultaneously provide anti-clogging protection for the jetting nozzle, which has a good protective effect." This method reduces the occurrence of clogging, but the effect is limited and cannot completely solve the problem of nozzle and jetting pipe clogging.

[0005] Therefore, those skilled in the art are dedicated to developing anti-clogging spraying devices for deep-sea submersibles and their operating methods. Furthermore, in existing technologies, the spraying system immediately stops operating after the nozzle finishes spraying, which may lead to sediment backflow, potentially causing the nozzle to become clogged. Summary of the Invention

[0006] One advantage of the present invention is that it provides a deep-sea diving bottom-sitting anti-clogging spray device and its working method, wherein the deep-sea diving bottom-sitting anti-clogging spray device can prevent the spray system from being blocked by mud or clay and other debris when the deep-sea diving bottom rises.

[0007] Another advantage of the present invention is that it provides a deep-sea diving bottom-sitting anti-clogging spray device and its working method, wherein the deep-sea diving bottom-sitting anti-clogging spray device can reduce the backflow of mud or clay from clogging the spray system.

[0008] Another advantage of this invention lies in its provision of a deep-sea diving bottom-sitting anti-clogging spray device and its operating method, wherein the deep-sea diving bottom-sitting anti-clogging spray device is in a completely sealed state when not spraying, thereby preventing seabed debris from entering the spray system. To achieve at least one of the above advantages, this invention provides a deep-sea diving bottom-sitting anti-clogging spray device, which includes:

[0009] A device body, wherein the device body forms an installation channel and forms a first opening and a second opening at both ends that are respectively connected to the installation channel;

[0010] At least one anti-clogging nozzle assembly, wherein the anti-clogging nozzle assembly includes a blocking nozzle, a movable nozzle, a guide member, and an elastic member, wherein the blocking nozzle is fixed to the inner wall of the mounting channel, and a flow port communicating with the mounting channel is formed in the middle of the blocking nozzle, wherein the movable nozzle has at least one spray hole offset from the flow port, wherein the movable nozzle is fixedly connected to one end of the guide member, wherein the other end of the guide member is disposed through the flow port, and the guide member is movably mounted on the inner wall of the mounting channel along an axial direction defined by the direction opposite to the first opening and the second opening, wherein the elastic member is disposed between the guide member and the movable nozzle in a manner that tends to force the movable nozzle against the blocking nozzle on the side facing the second opening, and the cross-sectional dimension of the flow port is larger than the cross-sectional dimension of the guide member.

[0011] According to an embodiment of the present invention, the deep-sea submersible bottom-sitting anti-clogging spray device includes a limiting component, wherein the other end of the guide member is disposed through the central channel of the limiting component, and the elastic member is disposed between the guide member and the moving spray member in a deformable manner, so as to force the moving spray member to press against the side of the blocking spray member facing the second opening, and at the same time block the flow port by the moving spray member.

[0012] According to one embodiment of the present invention, a boss is formed at the other end of the guide member that passes through the flow port, wherein the outer wall of the boss is pressed against the inner wall of the mounting channel, wherein a connecting channel for fluid to pass through is formed on the boss, wherein both ends of the elastic member are pressed against the boss and the plugging member respectively, and the elastic member is configured to remain in a compressed state.

[0013] According to one embodiment of the present invention, a gap is formed between the periphery of the moving spray member and the inner wall of the mounting channel.

[0014] According to one embodiment of the present invention, the periphery of the moving spray member is sealed against the inner wall of the mounting channel.

[0015] According to one embodiment of the present invention, the limiting component includes at least one radial connector and one central connector. One end of the radial connector is fixed to the inner wall of the mounting channel, and the central connector is positioned at the axial upper center of the mounting channel, with a through hole formed in the center for the guide to pass through.

[0016] According to one embodiment of the present invention, the limiting component is installed on the first cylinder, wherein the first cylinder is detachably connected to the second cylinder by a thread, one end of the first cylinder forms the first opening, one end of the second cylinder forms the second opening, and the second opening communicates with the external environment of the bottom shell of the movable deep-sea submersible bottom-mounted platform.

[0017] According to one embodiment of the present invention, the limiting component is disposed on the first cylinder.

[0018] According to one embodiment of the present invention, at least a portion of the edge of the device body forming the second opening extends radially inward to form a limiting portion.

[0019] To achieve at least one of the above advantages, the present invention provides a method for operating a deep-sea submersible bottom-sitting anti-clogging spray device, the method comprising the following steps:

[0020] S1001, high-pressure fluid is introduced through the first opening formed in the main body of the device, so that the moving nozzle can move away from the blocking nozzle, thereby allowing the high-pressure fluid to be ejected through the jetting hole on the moving nozzle, wherein the moving nozzle is pressed against the blocking nozzle by the elastic member, wherein the flow port is formed in the middle of the blocking nozzle, wherein the moving nozzle is fixed at one end of the guide member, and the other end of the guide member passes through the flow port and is slidably passed through the middle of the limiting member;

[0021] S1002, after the high-pressure fluid has been sprayed through the spray hole for a predetermined time, the pressure of the high-pressure fluid introduced from the first opening gradually decreases until the moving nozzle remains pressed against the blocking nozzle, thereby blocking the spray hole and the flow port. Attached Figure Description

[0022] Figure 1 The image shows a perspective view of the deep-sea diving bottom-sitting anti-clogging spray device of the present invention from one angle.

[0023] Figure 2 This image shows a perspective view of the deep-sea diving bottom-sitting anti-clogging spray device described in this invention from another angle.

[0024] Figure 3The diagram shows a partial view of the structure of the deep-sea submersible anti-clogging spray device according to one embodiment of the present invention in one state after being cut open.

[0025] Figure 4 The present invention is shown. Figure 3 The diagram shown is a schematic representation of a portion of the underwater deep-sea submersible bottom-sitting anti-clogging spray device in another state after being cut open in one embodiment.

[0026] Figure 5 An exploded schematic diagram of the main body of the deep-sea diving bottom-sitting anti-clogging spray device of the present invention is shown.

[0027] Figure 6 A schematic diagram of part of the structure of the seabed deep-sea diving anti-clogging spray device described in this invention is shown.

[0028] Figure 7 The present invention illustrates the seabed deep-sea diving bottom-sitting anti-clogging spray device in... Figure 3 A cross-sectional view of a portion of the structure of one embodiment is shown. Detailed Implementation

[0029] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0030] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention.

[0031] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0032] A Chinese patent document with publication number CN116022317A discloses a high-pressure jetting system for a deep-sea submersible wind turbine installation platform. This platform is movable and includes a sequentially connected air supply system, a jetting pipeline system, and nozzles. The patent document states: "The jetting nozzle is configured as a nozzle structure, with a protective net at the nozzle. Simultaneously, end ramps are provided on both sides of the outer half-pipe of the nozzle. The protective net and end ramps simultaneously provide anti-clogging protection for the nozzle, resulting in good protection." This is in conjunction with the appendix of the patent document. Figure 3-5 It can be seen that the anti-clogging function of this nozzle structure is not perfect, and there is room for improvement in its structure and anti-clogging effect.

[0033] Therefore, for the jet spraying system of a deep-sea submersible landing platform, its nozzle structure needs to have anti-clogging function while achieving efficient jet spraying function, so it is necessary to improve the nozzle structure in the existing technology.

[0034] like Figures 1 to 7 The deep-sea submersible bottom-sitting anti-clogging spray device shown will be described in detail below. In one embodiment of the present invention, the deep-sea submersible bottom-sitting anti-clogging spray device is placed in the bottom shell of the float of the movable deep-sea submersible bottom-sitting installation platform and can be connected to a branch pipe of a spray system so that high-pressure fluid, such as high-pressure gas or high-pressure seawater, is introduced through the branch pipe. The high-pressure fluid is then sprayed out by the deep-sea submersible bottom-sitting anti-clogging spray device, thereby solving the problem of the deep-sea submersible bottom-sitting installation platform sticking to the bottom when it floats.

[0035] Specifically, the deep-sea submersible bottom-sitting anti-clogging spray device includes a device body 10, wherein the device body 10 forms an installation channel 101 and forms a first opening 102 and a second opening 103 at both ends that are respectively connected to the installation channel 101.

[0036] Preferably, the main body 10 of the device includes a first cylinder 11 and a second cylinder 12. One end of the first cylinder 11 forms the first opening 102, and the first opening 102 is configured to communicate with the branch pipe of the jetting system so as to introduce the fluid introduced by the jetting system through the first cylinder 11.

[0037] One end of the second cylindrical body 12 forms the second opening 103, and the second opening 103 communicates with the external environment of the bottom hull of the movable deep-sea submersible mounting platform. The other end of the first cylindrical body 11 is detachably and sealed to the other end of the second cylindrical body 12 to form the mounting channel 101. This facilitates the assembly of subsequent components into the mounting channel 101.

[0038] Furthermore, the deep-sea diving bottom-sitting anti-clogging spray device also includes an anti-clogging nozzle assembly 20.

[0039] Preferably, the anti-clogging nozzle assembly 20 includes a limiting member 21 fixedly mounted on the inner wall of the mounting channel 101, preferably mounted on the inner wall of the first cylinder 11. A gap is formed between the limiting member 21 and the inner wall of the mounting channel 101, allowing fluid introduced from the first opening 102 to flow through to the second opening 103.

[0040] The anti-clogging nozzle assembly 20 includes a plugging nozzle 22, wherein the plugging nozzle 22 has a flow port 2201 in the middle to communicate with the installation channel 101, and wherein the plugging nozzle 22 is installed on the inner wall of the installation channel 101.

[0041] Preferably, the nozzle blocking component 22 is fixedly connected to the inner circumferential surface of the second cylinder 12, and the outer circumferential surface of the nozzle blocking component 22 is sealed and fixed to the inner wall of the installation channel 101.

[0042] The anti-clogging nozzle assembly 20 includes a movable nozzle 23 that can be stacked on the outside of the plugging nozzle 22 facing the second opening 103. The outer wall of the movable nozzle 23 can seal against the inner wall of the mounting channel 101 and can slide along the inner wall of the mounting channel 101. At least one flushing hole 2301 is provided on the movable nozzle 23 at a position offset from the flow port 2201, so that when the movable nozzle 23 tends to move towards the first opening 102 and presses against the plugging nozzle 22 facing the second opening 103, the flushing hole 2301 is blocked by the plugging nozzle 22.

[0043] The anti-clogging nozzle assembly 20 also includes a guide member 24 and an elastic member 25. One end of the guide member 24 passes through the flow port 2201 and is connected to the moving nozzle 23. The other end of the guide member 24 is confined to the inner wall of the mounting channel 101.

[0044] In one embodiment, a boss is formed on the other end of the guide 24 that passes through the flow port 2201, wherein the outer wall of the boss is pressed against the inner wall of the mounting channel 101, and the boss forms a connecting channel for fluid to pass through.

[0045] In another embodiment, the other end of the guide 24 is disposed through the central channel of the limiting member 21. The elastic member 25 is deformably disposed between the other end of the guide 24 and the movable spray member 23, tending to force the movable spray member 23 against the side of the blocking spray member 22 facing the second opening 103, and simultaneously blocking the flow port 2201 by the movable spray member 23.

[0046] In one embodiment, one end of the elastic member 25 is fixed to the movable spray member 23, and the other end of the elastic member 25 is fixed to the limiting member 21 on the side facing the second opening 103. The elastic member 25 is kept in a stretched state, causing the movable spray member 23 to tend to move towards the first opening 102 and press against the side of the plugging member 22 facing the second opening 103. In this way, the movable spray member 23 will be held against the side of the plugging member 22 facing the second opening 103 due to the tension of the elastic member 25.

[0047] In a modified embodiment, the elastic member 25 remains compressed, with its two ends pressing against the boss and the nozzle plug 22, respectively.

[0048] In a modified embodiment, the guide 24 forms an annular platform near the first opening 102, wherein the elastic member 25 is disposed between the annular platform and the limiting member 21 in a manner that maintains compression, thereby causing the guide 24 to tend to pull the moving spray member 23 against the side of the blocking spray member 22 facing the second opening 103.

[0049] Preferably, the cross-sectional dimension of the flow port 2201 is larger than that of the guide member 24, so that the high-pressure fluid entering from the first opening 102 can pass through the gap between the guide member 24 and the inner wall of the nozzle blocker 22 forming the flow port 2201 and press against the moving nozzle 23. Since the pressure relief speed of the jetting hole 2301 on the moving nozzle 23 is relatively slow and the pressure of the fluid jetting is relatively large, the moving nozzle 23 can be driven by the high-pressure fluid to overcome the elastic force of the elastic member 25 and move away from the nozzle blocker 22, thereby allowing the high-pressure fluid to be ejected through the jetting hole 2301. Those skilled in the art will understand that, in this way, the fluid ejected through the jetting hole 2301 can provide a lifting force to the deep-sea submersible platform, effectively preventing the deep-sea submersible platform from sinking to the bottom.

[0050] In other words, in one embodiment of the present invention, when the deep-sea diving bottom-sitting anti-clogging spray device is in the first working state, the elastic member 25 causes the moving spray member 23 to fit tightly against the blocking spray member 22. Since the flow port 2201 is misaligned with the spray hole 2301, both the flow port 2201 and the spray hole 2301 are blocked, thereby preventing seabed debris from entering the installation channel 101 through the flow port 2201 and the spray hole 2301, thus achieving the anti-clogging function.

[0051] When the deep-sea submersible bottom-sitting anti-clogging spraying device is in its second working state, the introduced high-pressure gas or high-pressure seawater and other fluids enter the installation channel 101 through the first opening 102. At the flow port 2201, the moving spray member 23 is lifted to the outside of the bottom shell of the floating body, and a spraying space is formed between the moving spray member 23 and the blocking spray member 22. The high-pressure gas or high-pressure seawater in the spraying space can be ejected through the spraying hole 2301 of the moving spray member 23 to realize the spraying operation.

[0052] It is worth mentioning that during the process of the deep-sea submersible bottom-sitting anti-clogging spray device returning from the second state to the first state, the pressure of the high-pressure fluid in the spray space gradually decreases instead of disappearing immediately, until the pressure of the high-pressure fluid is less than the force that forces the moving nozzle 23 to move towards the blocking nozzle 22. In this way, the moving nozzle 23 can slowly move towards the blocking nozzle 22 under the action of the elastic member 25 and the external seawater pressure. It is also worth mentioning that because the moving nozzle 23 moves slowly towards the blocking nozzle 22, the process of the moving nozzle 23 moving towards the blocking nozzle 22 reduces the risk of sludge backflow and blockage of the spray hole 2301 caused by the rapid return of the blocking nozzle 22. Furthermore, because the pressure of the high-pressure fluid in the spray space gradually decreases, there is still high-pressure fluid with gradually decreasing pressure being ejected through the spray hole 2301, thus reducing the amount of sludge backflowing through the spray hole 2301.

[0053] Preferably, the peripheral wall of the movable nozzle 23 is sealed against the inner wall of the mounting channel 101, thereby ensuring that the peripheral wall of the movable nozzle 23 remains sealed to the inner wall of the mounting channel 101 during sliding. In this way, during the spraying process, the pressure of the high-pressure fluid can be ejected only through the spray hole 2301, and not between the peripheral wall of the movable nozzle 23 and the inner wall of the mounting channel 101, thus ensuring that the fluid ejected through the spray hole 2301 has a large impact force.

[0054] Furthermore, since the peripheral sidewall of the moving nozzle 23 is sealed against the inner wall of the mounting channel 101, the space between the moving nozzle 23 and the plug nozzle 22 is filled with fluid during the subsequent slow reduction of the high-pressure fluid. This slows down the movement of the moving nozzle 23 toward the plug nozzle 22, thereby reducing the amount of mud and sand flowing back from the jet orifice 2301.

[0055] Preferably, the direction of the jetting hole 2301 near the outer side of the moving jetting member 23 is set to be obliquely towards the outer side of the moving jetting member 23, so as to increase the area of ​​the jetting device when the deep-sea diving bottom anti-clogging jetting device is jetting.

[0056] More specifically, the limiting component 21 includes at least one radial connector 211 and a central connector 212. One end of the radial connector 211 is fixed to the inner wall of the mounting channel 101, and the central connector 212 is positioned at the axial upper center of the mounting channel 101, with a through hole 21201 formed in the center for the guide 24 to pass through.

[0057] Those skilled in the art will understand that, in one embodiment, since the guide member 24 passes through the perforation 21201, the movable nozzle 23 can be limited and will not deviate from the axial direction during the sliding process of the guide member 24 along with the movable nozzle 23. Preferably, the deep-sea submersible bottom-sitting anti-clogging spray device includes a plurality of the limiting components 21. More preferably, the plurality of limiting components 21 are arranged at intervals along the moving direction of the movable nozzle 23, thereby better ensuring that the movable nozzle 23 can be limited and will not deviate from the axial direction during the sliding process.

[0058] It is worth mentioning that, in one embodiment, the limiting member 21 is installed on the first cylinder 11, wherein the first cylinder 11 is connected to the second cylinder 12 by a threaded connection. In this way, the distance between the limiting member 21 installed on the first cylinder 11 and the moving spray member 23 can be adjusted by relatively rotating the first cylinder 11 and the second cylinder 12. Thus, in one embodiment, the deformation of the elastic member 25 disposed between the limiting member 21 and the moving spray member 23 can be adjusted. Those skilled in the art will understand that this allows the pressure of the high-pressure fluid required for the moving spray member 23 to move away from the blocking spray member 22 to be adjusted.

[0059] Preferably, the edge of the device body 10 forming the second opening 103 extends radially inward at least in part to form a limiting part 13, so as to prevent the moving spray member 23 from moving out of the mounting channel 101 during the movement of the moving spray member 23 along the mounting channel 101, thereby limiting the moving spray member 23.

[0060] According to another aspect of the present invention, the present invention also provides a method for operating a deep-sea diving bottom-sitting anti-clogging spray device, wherein the method for operating the deep-sea diving bottom-sitting anti-clogging spray device includes the following steps:

[0061] S1001, high-pressure fluid is introduced through the first opening 102 formed by the device body 10, so that the moving nozzle 23 can move away from the nozzle blocker 22, thereby allowing the high-pressure fluid to be ejected through the jetting hole 2301 on the moving nozzle 23, wherein the moving nozzle 23 is pressed against the nozzle blocker 22 by the elastic member 25, wherein the flow port 2201 is formed in the middle of the nozzle blocker 22, wherein the moving nozzle 23 is fixed at one end of the guide member 24, and the other end of the guide member 24 passes through the flow port 2201 and is slidably passed through the middle of the limiting member 21;

[0062] S1002, after the high-pressure fluid has been sprayed through the spray hole 2301 for a predetermined time, the pressure of the high-pressure fluid introduced from the first opening 102 gradually decreases until the moving spray member 23 remains pressed against the blocking spray member 22, thereby blocking the spray hole 2301 and the flow port 2201.

[0063] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the invention. The advantages of the present invention have been fully and effectively realized. The functional and structural principles of the present invention have been demonstrated and explained in the embodiments; any variations or modifications can be made to the implementation of the present invention without departing from these principles.

Claims

1. A deep-sea diving bottom-sitting anti-clogging spray device, characterized in that, The deep-sea diving bottom-sitting anti-clogging spray device includes: A device body, wherein the device body forms an installation channel and forms a first opening and a second opening at both ends that are respectively connected to the installation channel; At least one anti-clogging nozzle assembly, wherein the anti-clogging nozzle assembly includes a blocking nozzle, a movable nozzle, a guide member, and an elastic member, wherein the blocking nozzle is fixed to the inner wall of the mounting channel, and a flow port communicating with the mounting channel is formed in the middle of the blocking nozzle, wherein the movable nozzle has at least one spray hole offset from the flow port, wherein the movable nozzle is fixedly connected to one end of the guide member, wherein the other end of the guide member is disposed through the flow port, and the guide member is movably mounted on the inner wall of the mounting channel along an axial direction defined by the direction opposite to the first opening and the second opening, wherein the elastic member is disposed between the guide member and the movable nozzle in a manner that tends to force the movable nozzle against the blocking nozzle on the side facing the second opening, and the cross-sectional dimension of the flow port is larger than the cross-sectional dimension of the guide member.

2. The deep-sea diving bottom-sitting anti-clogging spray device according to claim 1, characterized in that, The deep-sea submersible bottom-sitting anti-clogging spray device includes a limiting component, wherein the other end of the guide is disposed through the central channel of the limiting component, and the elastic member is disposed between the guide and the moving spray member in a deformable manner, so as to force the moving spray member to press against the side of the blocking spray member facing the second opening, and at the same time block the flow port by the moving spray member.

3. The deep-sea diving bottom-sitting anti-clogging spray device according to claim 1, characterized in that, A boss is formed at the other end of the guide member that passes through the flow port. The outer wall of the boss is pressed against the inner wall of the mounting channel. A connecting channel for fluid to pass through is formed on the boss. The two ends of the elastic member are pressed against the boss and the plugging member, respectively, and the elastic member is set to remain in a compressed state.

4. The deep-sea submersible bottom-sitting anti-clogging spray device according to any one of claims 1 to 3, characterized in that, A gap is formed between the periphery of the moving spray component and the inner wall of the mounting channel.

5. The deep-sea submersible bottom-sitting anti-clogging spray device according to any one of claims 1 to 3, characterized in that, The periphery of the moving spray element is sealed against the inner wall of the mounting channel.

6. The deep-sea diving bottom-sitting anti-clogging spray device according to claim 2, characterized in that, The limiting component includes at least one radial connector and one central connector. One end of the radial connector is fixed to the inner wall of the mounting channel. The central connector is positioned at the axial upper center of the mounting channel and has a through hole formed in the center for the guide to pass through.

7. The deep-sea diving bottom-sitting anti-clogging spray device according to claim 6, characterized in that, The limiting component is installed on the first cylinder, wherein the first cylinder is detachably connected to the second cylinder by threads, one end of the first cylinder forms the first opening, one end of the second cylinder forms the second opening, and the second opening is connected to the external environment of the floating hull of the movable deep-sea submersible bottom-mounted platform.

8. The deep-sea diving bottom-sitting anti-clogging spray device according to claim 7, characterized in that, The limiting component is disposed on the first cylinder.

9. The deep-sea submersible bottom-sitting anti-clogging spray device according to any one of claims 1-3, characterized in that, The edge of the main body of the device forming the second opening extends radially inward in at least a portion to form a limiting portion.

10. A method for operating a deep-sea submersible bottom-sitting anti-clogging spray device, characterized in that, The operating method of the deep-sea submersible bottom-sitting anti-clogging spray device includes the following steps: S1001, high-pressure fluid is introduced through the first opening formed by the main body of the device so that the moving nozzle can move away from the blocking nozzle, thereby allowing the high-pressure fluid to be ejected through the spray hole on the moving nozzle, wherein the moving nozzle is pressed against the blocking nozzle by an elastic member, wherein a flow port is formed in the middle of the blocking nozzle, wherein the moving nozzle is fixed at one end of a guide member, and the other end of the guide member passes through the flow port and is slidably passed through the middle of the limiting member; S1002, after the high-pressure fluid has been sprayed through the spray hole for a predetermined time, the pressure of the high-pressure fluid introduced from the first opening gradually decreases until the moving nozzle keeps pressing against the blocking nozzle, thereby blocking the spray hole and the flow port.

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