Underwater instrument protection device

Abstract

The utility model relates to the technical field of ocean development underwater equipment, in particular to an underwater instrument protection device which comprises a shell and further comprises a driving assembly and anchor fluke pieces, the multiple anchor fluke pieces are arranged, the driving assembly is installed in the shell, one end of each anchor fluke piece is rotationally connected with the outer surface of the shell, and the other end of each anchor fluke piece is rotationally connected with the driving assembly. The driving assembly drives the anchor fluke piece to rotate and expand outwards. According to the utility model, the instrument can be effectively fixed on the seabed, and the problem that the measurement data of the detection instrument is unstable due to large shaking is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the underwater equipment technical field of ocean exploitation, more particularly to an underwater instrument protection device. BACKGROUND

[0002] In the process of ocean oil and gas exploitation and production, many instruments and meters such as temperature detectors, pressure sensors, ocean current meters and other instruments or equipment are needed to detect, measure, observe and calculate various physical quantities, material components and physical parameters. These devices need to work underwater for a long time, and the ocean current and surge often impact the instruments and equipment continuously, which makes the instruments and equipment prone to shaking in the water, the measurement data unstable, and even cause the equipment to malfunction.

[0003] The prior art discloses an instrument and meter with anti-pulse pressure, which comprises a fixed base, an underwater instrument, a mounting support, a protection structure and a quick fixing structure. The quick fixing structure is installed between the mounting support and the underwater instrument, and the protection structure is installed at the fixed base. This prior art still cannot stably fix the instrument and meter on the seabed, and in the practical application of engineering, it still has the problem of unstable measurement data caused by large shaking. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the problem of unstable measurement data caused by the prior art that cannot stably fix the instrument and meter on the seabed, and provides an underwater instrument protection device that can effectively fix the instrument and meter on the seabed and avoid the problem of unstable measurement data of the detection instrument caused by large shaking.

[0005] To solve the above technical problems, the utility model adopts the technical scheme of:

[0006] The utility model provides an underwater instrument protection device, which comprises a shell and an instrument cabin, and further comprises a driving assembly and a fluked piece, the fluked piece is provided with a plurality of pieces, the driving assembly and the instrument cabin are installed in the shell, the driving assembly is internally installed with a protected instrument, the inside of the driving assembly is communicated with the outside through the shell, one end of the fluked piece is rotationally connected with the outer surface of the shell, the other end is rotationally connected with the driving assembly, and the driving assembly drives the fluked piece to rotate and expand outward.

[0007] In the working process of the above scheme, the underwater robot or professional diver brings the protection device to the seabed of the target position, installs the detection instrument in the shell, and vertically inserts the anchor claw into the seabed. The underwater robot or professional diver operates the driving assembly, which drives the shell around several anchor claws to rotate outward and scrape the seabed and sand around the shell outward. At this time, the anchor claws are inserted into the seabed in different directions, respectively. Continue to operate the driving assembly to gradually deepen the anchor claws into the seabed, anchor the entire protection instrument, make the protection device more fixed, avoid large shaking in the water, and effectively improve the stability of data measurement.

[0008] Further, the driving assembly comprises a rotating seat, a sliding seat and a driving connecting rod. The rotating seat is inserted into the inner cavity of the shell and is rotationally connected with the shell. The sliding seat is slidingly connected with the shell and is drivingly connected with one end of the rotating seat and extends out of the shell at the other end. One end of the driving connecting rod is rotationally connected with the sliding seat and the other end is rotationally connected with the anchor claw. The sliding seat converts the rotary motion of the rotating seat into linear feed motion. The sliding seat moves linearly away from the rotating seat, driving the driving connecting rod to rotate, thereby effectively expanding the anchor claw outward of the shell.

[0009] Further, the bottom of the shell is provided with an anchor part. The anchor part is provided with a hollow part penetrating through the side wall. The hollow part is communicated with the inner cavity of the shell. The driving connecting rod penetrates through the side wall of the anchor part. The bottom of the anchor part is conical. The anchor claw is a plate-shaped part. The distal end of the anchor claw away from the shell is a sharp end. The conical bottom of the anchor part and the sharp end of the anchor claw are more conducive to the stable insertion of the entire shell into the seabed. The anchor part at the bottom of the shell is provided with a hollow part penetrating through the side wall. On the one hand, it is convenient for the driving connecting rod to extend out of the shell and be rotationally connected with the anchor claw. On the other hand, after the anchor claw is rotated outward to complete the expansion, the hollow part is open and in contact with the seabed. The seabed sand and stones outside the hollow part can flow into the hollow part under the pressure of the water flow, so that the anchor part has a stronger stability effect.

[0010] Further, the top of the rotating seat is provided with a boss part. The boss part is in abutment with the top of the shell. The sliding seat is inserted into the bottom of the rotating seat and is threadedly connected with the rotating seat. The rotating seat and the shell are both cylindrical. The top of the rotating seat extends outward by a part, which is called the boss part. The boss part is used to realize the rotational connection with the shell. The bottom of the rotating seat is provided with internal threads. The outer wall of the sliding seat is provided with external threads. The rotation is converted into linear motion through the threaded transmission.

[0011] Further, the housing is provided with an extension part near one end of the anchor piece, and the extension part is located above the anchor piece; the outer wall of the housing above the anchor piece extends outwardly to form the extension part, which can increase the contact area of the housing with the seabed plane, facilitate the support of the whole device, and improve the stability.

[0012] Further, the instrument cabin is installed in the rotating seat and is in sliding connection with the rotating seat, and the instrument cabin is used for placing detection instruments; the instrument cabin is installed in the rotating seat, different types of detection instruments can be installed in the instrument cabin, and the detection instruments can effectively detect various physical quantities, material components and physical parameters.

[0013] Further, the housing is provided with a first through hole, the outer wall of the rotating seat is provided with a second through hole, and the bottom of the instrument cabin is provided with a third through hole; the detection instrument in the instrument cabin is in communication with the outside of the housing through the first through hole, the second through hole and the third through hole; the detection instrument needs to be in contact with the water body outside to perform detection, so the first through hole, the second through hole and the third through hole are arranged to facilitate the water to enter the inside of the instrument cabin, and the first through hole, the second through hole and the third through hole make the flow rate of the water flow gradually decrease when entering the instrument cabin, so as to reduce the impact of ocean current and surge on the detection instrument, and avoid damage of marine organisms growth and collision to the detection instrument.

[0014] Further, a filter is arranged between the detection instrument and the bottom of the instrument cabin, and the filter separates the third through hole and the detection instrument; there are small impurities in the water body of seawater, which can block the sensor of the detection instrument when entering the instrument cabin through the third through hole, thereby reducing the detection effect of the detection instrument or even causing the detection instrument to fail; therefore, the filter is arranged to filter the small impurities, thereby effectively improving the use effect of the detection instrument.

[0015] Further, a threaded rod is arranged, one end of the threaded rod is provided with a handle, a top cover is further installed on the top of the rotating seat, the end of the threaded rod away from the handle penetrates through the top cover and is in threaded connection with the top cover, the threaded rod is inserted into the inner cavity of the rotating seat and abuts against the detection instrument; the instrument cabin can slide in the rotating seat; during installation, the handle is operated to pass the threaded rod through the top cover and screw into the rotating seat, so that the threaded rod can push the instrument cabin to slide to a proper height position, and after the threaded rod abuts against the top surface of the detection instrument of the instrument cabin, the detection instrument can be fixed in the instrument cabin, thereby avoiding the detection instrument from escaping from the instrument cabin under the pushing of the water flow.

[0016] Further, the instrument cabin is further provided with a floating block, the floating block is located between the detection instrument and the inner wall of the instrument cabin; The setting of the floating block is mainly considered the disassembly problem of the instrument cabin, when disassembling, the threaded rod is rotated out from the rotating seat, but sometimes the instrument cabin is stuck in the rotating seat due to the corrosion or oxidation problem of the inner wall, the floating block is added, the instrument cabin can be automatically floated upward after the threaded rod, the sensor is convenient to take out, and the floating block can also fix the detection instrument in the radial direction, so that the radial displacement of the detection instrument under the action of water flow is avoided.

[0017] Compared with the prior art, the utility model has the advantages that:

[0018] 1. The underwater protection device comprises a shell, a driving assembly and anchor pieces, the anchor pieces are provided with a plurality of anchor pieces, the driving assembly is installed in the shell, one end of the anchor piece is rotationally connected with the outer surface of the shell, the other end is rotationally connected with the driving assembly, the driving assembly drives the anchor piece to rotate and expand outward, the anchor piece is inserted into the seabed, the whole protection device is anchored, the large shaking of the protection device in water is avoided, and the stability of data measurement is effectively improved.

[0019] 2. The shell is provided with a first through hole, the outer wall of the rotating seat is provided with a second through hole, the bottom of the instrument cabin is provided with a third through hole, the detection instrument in the instrument cabin is communicated with the outside of the shell through the first through hole, the second through hole and the third through hole, the first through hole, the second through hole and the third through hole can facilitate water to enter the inside of the instrument cabin, and can also make the flow rate gradually decrease, so that the impact of ocean current and surge on the detection instrument is reduced, and the damage of marine organisms growth and collision to the detection instrument is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a perspective view of an underwater instrument protection device;

[0021] Figure 2 It is an internal structure schematic view of an underwater instrument protection device from one angle;

[0022] Figure 3 It is an internal structure schematic view of an underwater instrument protection device from another angle;

[0023] Figure 4 It is an explosion view of the internal structure of an underwater instrument protection device.

[0024] In the drawings: 100, shell; 110, extension; 120, first through hole; 200, driving assembly; 210, rotating seat; 211, boss part; 212, second through hole; 213, top cover; 220, sliding seat; 230, driving link; 300, anchor jaw piece; 400, anchor part; 410, hollow part; 500, instrument cabin; 510, detection instrument; 520, third through hole; 530, filter piece; 540, float block; 600, threaded rod; 610, handle. DETAILED DESCRIPTION

[0025] The utility model will be further explained in connection with specific embodiments. Among them, the drawings are only used for example explanation, and the representation is only a schematic diagram, and cannot be understood as the limitation of the patent; in order to better illustrate the embodiment of the utility model, some components of the drawings will be omitted, enlarged or reduced, and the size of the actual product is not represented; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings can be omitted.

[0026] The same or similar reference numerals in the drawings of the embodiments of the utility model correspond to the same or similar components; in the description of the utility model, it is understood that if the orientation or position relationship indicated by the terms "upper", "lower", "left", "right" etc. is based on the orientation or position relationship shown in the drawings, only for the convenience of describing the utility model and simplifying the description, and not indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, therefore the position relationship description in the drawings is only used for example explanation, and cannot be understood as the limitation of the patent, for the ordinary skilled in the art, the specific meaning of the above terms can be understood according to the specific situation.

[0027] Embodiment 1

[0028] The embodiment is a first embodiment of an underwater instrument protection device, as shown in Figure 1 With 2 As shown, it comprises shell 100 and instrument cabin (500), and further comprises driving assembly 200 and anchor jaw piece 300, four anchor jaw pieces 300 are evenly arranged around the shell, driving assembly 200 and instrument cabin 5020 are installed in shell 100, protected instrument is installed in driving assembly 200, the inside of driving assembly 200 is communicated with seawater outside shell 100, one end of anchor jaw piece 300 is rotatably connected with the outer surface of shell 100, the other end is rotatably connected with driving assembly 200, driving assembly 200 drives anchor jaw piece 300 to rotate and expand outward.

[0029] Specifically, the driving assembly 200 comprises a rotating seat 210, a sliding seat 220 and a driving connecting rod 230, the rotating seat 210 is inserted into the inner cavity of the shell 100 and is rotationally connected with the shell 100, the sliding seat 220 is slidingly connected with the shell 100, one end of the sliding seat 220 is drivingly connected with the rotating seat 210, and the other end of the sliding seat 220 extends out of the shell 100, one end of the driving connecting rod 230 is rotationally connected with the sliding seat 220, and the other end of the driving connecting rod 230 is rotationally connected with the anchor jaw 300; the sliding seat 220 converts the rotary motion of the rotating seat 210 into linear feeding motion, the sliding seat 220 moves linearly away from the rotating seat 210, drives the driving connecting rod 230 to rotate, and thus the anchor jaw 300 is effectively expanded out of the shell 100.

[0030] Specifically, the part of the driving connecting rod 230 and the sliding seat 220 located outside the shell 100 is connected, and in the initial state, the sliding seat 220 itself has a part extending out of the bottom of the shell 100, and the part is provided with a plurality of rotating nodes, and one end of the driving connecting rod 230 is rotationally connected with the rotating nodes.

[0031] Specifically, the bottom of the shell 100 is provided with an anchor part 400, the anchor part 400 is provided with a hollow part 410 penetrating through the side wall, the hollow part 410 is communicated to the inner cavity of the shell 100, the driving connecting rod 230 penetrates through the side wall of the anchor part 400, the bottom of the anchor part 400 is conical, the anchor jaw 300 is a plate-shaped part, and the end of the anchor jaw 300 away from the shell 100 is a pointed end; the conical bottom of the anchor part 400 and the pointed end of the anchor jaw 300 are more conducive to the stable insertion of the entire shell 100 into the seabed, the anchor part 400 at the bottom of the shell 100 is provided with the hollow part 410 penetrating through the side wall, on the one hand, the driving connecting rod 230 is convenient to extend out of the shell 100 and rotationally connected with the anchor jaw 300, and on the other hand, after the expansion of the anchor jaw 300 is completed, the hollow part 410 is open and in contact with the seabed, and the seabed sand and stones outside the hollow part 410 can flow into the hollow part 410 under the pressure of the water flow, so that the anchor part 400 has a stronger stability effect.

[0032] Specifically, the top of the rotating seat 210 is provided with a boss part 211, the boss part 211 abuts against the top of the shell 100, and the sliding seat 220 is inserted into the bottom of the rotating seat 210 and is threadedly connected with the rotating seat 210; the rotating seat 210 and the shell 100 are both cylinders, the top of the rotating seat 210 extends outward by a part, which is called the boss part 211, the rotating connection with the shell 100 is realized through the boss part 211, the bottom of the rotating seat 210 is provided with internal threads, and the outer wall of the sliding seat 220 is provided with external threads, so as to realize the conversion of rotary motion into linear motion through threaded transmission.

[0033] Specifically, the housing 100 is provided with an extension part 110 near one end of the anchor claw part 300, and the extension part 110 is located above the anchor claw part 300; the outer wall of the housing 100 above the anchor claw part 300 extends outward to form the extension part 110, which can increase the contact area of the housing 100 with the seabed plane, thereby facilitating the support of the entire device and improving the stability.

[0034] The working principle of the underwater instrument protection device of the embodiment is as follows:

[0035] The underwater robot or professional diver brings the protection device to the seabed at the target position, and then operates the rotating seat 210 on the driving assembly 200 to drive the sliding seat 220 to move linearly, and then the driving connecting rod 230 connected with the sliding seat 220 rotates to drive the anchor claw part 300 around the housing 100 to rotate outward of the housing 100 and to scrape the seabed sand around the housing 100 outward of the housing 100, and the rotating seat 210 is continuously rotated to gradually insert the anchor claw part 300 into the seabed, and when the anchor nail part 400 is inserted into the seabed, the sand and stones around the seabed enter the anchor nail part 400 through the hollow part 410 to fill the anchor nail part 400, and finally the extension part 110 abuts against the seabed plane to form a stable support effect.

[0036] The beneficial effects of the embodiment are as follows: the anchor claw part 300 is inserted into the seabed to anchor the entire protection device, thereby avoiding large shaking of the protection device in water, and the sand and stones around the seabed can enter the anchor nail part 400 through the hollow part 410 to fill the anchor nail part 400, and the extension part 110 contacts the seabed plane to increase the contact area of the housing 100 with the seabed plane, thereby forming a stable support and effectively improving the stability of data measurement.

[0037] Embodiment 2

[0038] The second embodiment of the underwater instrument protection device is as shown in Figures 1 to 3 The difference from the first embodiment is as follows:

[0039] Specifically, the instrument cabin 500 is installed in the rotating seat 210 and is in sliding connection with the rotating seat 210, and the instrument cabin 500 is used to place the detection instrument 510; the instrument cabin 500 is installed in the rotating seat 210, different types of detection instruments 510 can be installed in the instrument cabin 500, and the detection instruments 510 can effectively detect various physical quantities, substance components, and physical parameters.

[0040] Specifically, the first through hole 120 is arranged on the shell 100, the second through hole 212 is arranged on the outer wall of the rotating seat 210, and the third through hole 520 is arranged on the bottom of the instrument cabin 500. The detection instrument 510 in the instrument cabin 500 is in communication with the outside of the shell 100 through the first through hole 120, the second through hole 212 and the third through hole 520. The detection instrument 510 needs to be in contact with the water outside to be able to detect, so the first through hole 120, the second through hole 212 and the third through hole 520 are arranged to facilitate the water to enter the inside of the instrument cabin 500. At the same time, the first through hole 120, the second through hole 212 and the third through hole 520 make the flow rate of the water flow gradually decrease when the water flow enters the instrument cabin 500, so as to reduce the impact of the ocean current and the surge on the detection instrument 510 and avoid the damage of the growth and collision of marine organisms to the detection instrument 510.

[0041] Specifically, the filter 530 is further arranged between the detection instrument 510 and the bottom of the instrument cabin 500, and the filter 530 separates the third through hole 520 and the detection instrument 510. There are small impurities in the water of the sea water. These impurities will block the sensor of the detection instrument 510 when entering the instrument cabin 500 through the third through hole 520, thereby reducing the detection effect of the detection instrument 510 or even causing the detection instrument 510 to fail. Therefore, the filter 530 is arranged to filter these small impurities, thereby effectively improving the use effect of the detection instrument 510.

[0042] The working principle of the underwater instrument protection device in the embodiment is as follows:

[0043] When the detection instrument 510 in the protection device works, the water flow outside the shell 100 flows into the cavity between the shell 100 and the rotating seat 210 through the first through hole 120 on the outside of the shell 100, then enters the cavity of the rotating seat 210 through the second through hole 212 on the outer shell of the rotating seat 210, and finally flows into the instrument cabin 500 through the third through hole 520 on the bottom of the instrument cabin 500. At the same time, the small impurities in the water are isolated outside the instrument cabin 500 by the filter 530. The detection instrument 510 monitors the entering water flow and collects data.

[0044] The beneficial effect of the embodiment is that, through the arrangement of the first through hole 120, the second through hole 212 and the third through hole 520, the flow rate of the water flow gradually decreases when the water flow enters the instrument cabin 500, so as to reduce the impact of the ocean current and the surge on the detection instrument 510 and avoid the damage of the growth and collision of marine organisms to the detection instrument 510.

[0045] In other embodiments, the second through hole 212 for the sea water to enter can be left on the top of the rotating seat 210, and the sea water can directly enter the rotating seat 210 without the first through hole 120 arranged on the outer shell.

[0046] Embodiment 3

[0047] The third embodiment of the underwater instrument protection device is shown in the figure, which is different from the first embodiment in that: Figure 4

[0048] Specifically, the threaded rod 600 is provided with a handle 610 at one end, the top of the rotating seat 210 is further provided with a top cover 213, the end of the threaded rod 600 away from the handle 610 penetrates through the top cover 213 and is threadedly connected with the top cover 213, the threaded rod 600 is inserted into the inner cavity of the rotating seat 210 and abuts against the detection instrument 510, the instrument cabin 500 can slide in the rotating seat 210, during installation, the handle 610 is operated to pass the threaded rod 600 through the top cover 213 and screw into the rotating seat 210, so that the threaded rod 600 can push the instrument cabin 500 to slide to a proper height position, and after the threaded rod 600 abuts against the top surface of the detection instrument 510, the detection instrument 510 can be fixed in the instrument cabin 500, avoiding the detection instrument 510 from escaping from the instrument cabin 500 under the pushing of water flow.

[0049] Specifically, the instrument cabin 500 is further provided with a floating block 540, which is located between the detection instrument 510 and the inner wall of the instrument cabin 500; the floating block 540 is mainly arranged for the disassembly of the instrument cabin 500, during disassembly, the threaded rod 600 is screwed out from the rotating seat 210, but at this time, the instrument cabin 500 may be stuck in the rotating seat 210 due to corrosion or oxidation of the inner wall, the floating block 540 is arranged, the instrument cabin 500 can automatically float upward after the threaded rod 600, so that the detection instrument 510 is convenient to take out, at the same time, the floating block 540 can also fix the detection instrument 510 in the radial direction, avoiding the detection instrument 510 from running in the radial direction under the action of water flow, the top of the instrument cabin 500 is provided with a mounting hole for mounting the detection instrument 510, and a mounting groove is excavated below the mounting hole by the floating block 540, the detection instrument 510 is arranged in the mounting groove.

[0050] The working principle of the underwater instrument protection device is as follows:

[0051] ​In the process of installing the detection instrument 510, the detection instrument 510 is first embedded into the inner wall of the floating block 540, then the instrument cabin 500 is slid into the rotating seat 210, the top cover 213 is covered and the threaded rod 600 is screwed in, there is a certain friction force between the outer wall of the instrument cabin 500 and the inner wall of the rotating seat 210, the threaded rod 600 is slowly screwed in, the threaded rod 600 abuts against the detection instrument 510, in the process of placing the detection instrument 510 under water, the threaded rod 600 abuts against the detection instrument 510, avoiding the instrument cabin 500 from floating up and the detection instrument 510 from being thrown out of the instrument cabin 500, when disassembling in water, only the threaded rod 600 needs to be screwed out, and the top cover 213 is opened, the instrument cabin 500 is automatically floated up under the action of the buoyancy force and overcomes the friction force, finally the instrument cabin 500 is taken out to complete the disassembly of the detection instrument 510.

[0052] The beneficial effects of the embodiment are that: through the floating block 540, the instrument cabin 500 can be automatically floated upwards after the threaded rod 600, the sensor is convenient to take out, and the floating block 540 can also fix the detection instrument 510 in the radial direction, avoiding the detection instrument 510 from running in the radial direction under the action of water flow.

[0053] In the specific contents of the above specific embodiments, each technical feature can be combined arbitrarily without contradiction, in order to make the description simple, all possible combinations of the above technical features are not described, however, as long as the combination of the technical features does not exist contradiction, it should be considered that it is within the scope of the present application.

[0054] Obviously, the above embodiments of the present application are only examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the implementation modes are not required or can not be exhausted. Any modification, equivalent replacement and improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. An underwater instrument protection device comprising a housing (100) and an instrument capsule (500), characterized in that, Also include a drive assembly (200) and an anchor piece (300), the anchor piece (300) is provided with several, the drive assembly (200) and the instrument cabin (500) are installed in the shell (100), the instrument cabin (500) inside is communicated with the outside through the shell (100), one end of the anchor piece (300) is rotatably connected with the outer surface of the shell (100), the other end is rotatably connected with the drive assembly (200), the drive assembly (200) drives the anchor piece (300) to rotate and expand outward.

2. An underwater instrument protection device according to claim 1, characterised in that The drive assembly (200) includes a rotating seat (210), a sliding seat (220) and a drive connecting rod (230), the rotating seat (210) is inserted into the inner cavity of the shell (100) and is rotatably connected with the shell (100), the sliding seat (220) is slidably connected with the shell (100), one end is drivingly connected with the rotating seat (210), the other end extends out of the shell (100), one end of the drive connecting rod (230) is rotatably connected with the sliding seat (220), the other end is rotatably connected with the anchor piece (300).

3. An underwater instrument protection device according to claim 2, wherein, The bottom of the shell (100) is provided with an anchor nail part (400), the anchor nail part (400) is provided with a hollow part (410) penetrating through the side wall, the hollow part (410) is communicated to the inner cavity of the shell (100), the drive connecting rod (230) penetrates through the side wall of the anchor nail part (400), the bottom of the anchor nail part (400) is conical, the anchor piece (300) is a plate-shaped piece, the distal end of the anchor piece (300) away from the shell (100) is a sharp end.

4. An underwater instrument protection device according to claim 2, wherein, The top of the rotating seat (210) is provided with a boss part (211), the boss part (211) abuts against the top of the shell (100), the sliding seat (220) is inserted into the bottom of the rotating seat (210) and is threadedly connected with the rotating seat (210).

5. An underwater instrument protection device according to claim 2, wherein, The shell (100) is provided with an extension part (110) near one end of the anchor piece (300), the extension part (110) is located above the anchor piece (300).

6. An underwater instrument protection device according to any one of claims 2 to 5, wherein, The instrument cabin (500) is installed in the rotating seat (210) of the drive assembly (200) and is slidably connected with the rotating seat (210), the instrument cabin (500) is used for placing a detection instrument (510).

7. An underwater instrument protection device according to claim 6, wherein, The shell (100) is provided with a first through hole (120), the outer wall of the rotating seat (210) is provided with a second through hole (212), the bottom of the instrument cabin (500) is provided with a third through hole (520), the detection instrument (510) in the instrument cabin (500) is communicated with the outside of the shell (100) through the first through hole (120), the second through hole (212) and the third through hole (520).

8. An underwater instrument protection device according to claim 7, characterised in that, The detection instrument (510) and the bottom of the instrument cabin (500) are further provided with a filter piece (530), the filter piece (530) separates the third through hole (520) and the detection instrument (510).

9. An underwater instrument protection device according to claim 6, wherein, Further comprising a threaded rod (600), one end of the threaded rod (600) is provided with a handle (610), the top of the rotating seat (210) is further provided with a top cover (213), one end of the threaded rod (600) away from the handle (610) penetrates through the top cover (213) and is threadedly connected with the top cover (213), the threaded rod (600) is inserted into the inner cavity of the rotating seat (210) and abuts against the detection instrument (510).

10. An underwater instrument protection device according to claim 7, wherein, Further comprising a floating block (540) arranged in the instrument cabin (500), the floating block (540) is located between the detection instrument (510) and the inner wall of the instrument cabin (500).

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