Depth-keeping starting device for hoisting sonar

Abstract

A hanging sonar depth-keeping starting device comprises a hollow thin-wall pressure-resistant outer cylinder, a cover plate is installed on the top face of the pressure-resistant outer cylinder through a fastener and a sealing piece, a hanging ring is installed on the top face of the pressure-resistant outer cylinder, and a bottom cover disengaging assembly is installed on the bottom face of the pressure-resistant outer cylinder through a fastener and a sealing piece; a lining cylinder is installed on the inner face of the pressure-resistant outer cylinder in a matched mode, a partition plate is arranged in the middle of the lining cylinder and divides the inner space into an upper layer and a lower layer, a plurality of battery packs and electronic tanks are arranged in the upper-layer inner space, and a driving cylinder, a sonar and an automatic contactor are arranged in the lower-layer inner space. Deep sea hoisting is carried out through a hoisting winch of a water surface ship or a deep sea submersible, the equipment does not work in the lowering process, multiple advantages of energy conservation, no sound production, no exposure of the position of the equipment and the like are achieved, meanwhile, high-pressure seawater is used as a power source to drive a piston to move, and automatic connection of positive and negative electrodes of sonar is completed; and the sonar can be automatically started to work after reaching the preset depth.

Description

Technical Field

[0001] The present invention relates to the technical field of deep - sea exploration sensor devices, and in particular to a depth - setting start - up device for a dipping sonar carried on a deep - sea submersible. Background Art

[0002] A dipping sonar is a sonar that uses a suspension cable to lower a probe or a sonar transducer into the water to detect targets. It is mainly equipped on anti - submarine helicopters and some surface ships for searching and positioning submarines. It consists of an electronic cabinet, a hydraulic winch and a cable deployment device, a sonar transducer, etc. It mainly works in an active mode, and also has passive and communication working modes. The detection range of an active - type for discovering submarines is generally about 5 nautical miles. When searching for submarines, a jumping - type point - by - point search is usually adopted. After the helicopter flies over the detection area, it hovers low over the detection point and lowers the sonar transducer into the water to a certain depth for active detection or passive listening.

[0003] A dipping sonar is often equipped on some surface ships or deep - sea submersibles. It is a sonar that uses a suspension cable to lower a sonar probe into deep water to detect targets, used for detecting and positioning underwater moving targets, and can also be used for underwater acoustic communication. When detecting targets, the array is far from the carrier, reducing the interference of the carrier's own noise. The dipping sonar mainly works in an active detection mode and also has a passive listening function.

[0004] In the existing dipping sonar, its working mode is that after the dipping sonar is lowered into the water from a surface ship or a deep - sea submersible, the sonar starts to work immediately. As the suspension cable is gradually lowered, the working depth of the dipping sonar gradually becomes deeper until it is lowered to the predetermined working depth. However, during the deployment process of the dipping sonar, the dipping sonar is always in a working state. This not only wastes energy, but most importantly, the dipping sonar in active detection during the deployment process always exposes its own position. As a result, before the dipping sonar reaches the predetermined depth, the detected target actively avoids it, leading to the failure of detecting moving targets. Summary of the Invention

[0005] In order to overcome the defects such as high energy consumption and long position exposure time existing in the deployment process of the existing dipping sonar carried on a surface ship or a deep - sea submersible, the applicant provides a depth - setting start - up device for a dipping sonar, so that the dipping sonar does not work during the deployment process and can automatically start working at a predetermined water depth.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A depth-fixed starting device for a dipping sonar, comprising a pressure-resistant outer cylinder with a hollow thin wall. The top surface of the pressure-resistant outer cylinder is installed with a cover plate through fasteners and seals. A lifting ring is installed on the top surface of the cover plate. The bottom surface of the pressure-resistant outer cylinder is installed with a bottom cover release assembly through fasteners and seals. A liner cylinder is fitted on the inner surface of the pressure-resistant outer cylinder. A partition is provided in the middle of the liner cylinder, which divides the inner space into upper and lower layers. A plurality of battery packs and electronic cans are arranged in the upper inner space, and a driving cylinder, a sonar, and an automatic contactor are arranged in the lower inner space.

[0008] Its further technical solution lies in:

[0009] The structure of the lifting ring is as follows: It includes a U-shaped ring. The top of the U-shaped ring is connected to the dipping cable, and a pin is inserted into the bottom of the U-shaped ring.

[0010] The structure of the cover plate is as follows: It includes a circular plate. A lifting lug is welded at the middle position on the top surface of the circular plate. A plurality of lifting holes are opened on the lifting lug. The lifting lug is fitted with the lifting ring. A plurality of screw holes are evenly distributed in the circumferential direction of the circular plate. A sealing groove is opened on the bottom surface of the circular plate, and an O-shaped rubber sealing ring is installed in the sealing groove.

[0011] The structure of the pressure-resistant outer cylinder is as follows: It includes an outer cylinder body. Upper and lower end flanges are respectively provided at the upper and lower ends of the outer cylinder body. Circumferentially evenly distributed threaded holes are opened on both the upper end flange and the lower end flange.

[0012] The structure of the liner cylinder is as follows: It includes a liner cylinder body. A middle partition is provided at the middle position of the liner cylinder body. Top and bottom sealing grooves are respectively provided on the top and bottom end faces of the liner cylinder body. Two upper left positioning holes and two upper right positioning holes are drilled on the top surface of the middle partition. A lower left threaded hole, a lower middle threaded hole, and a lower right threaded hole are respectively drilled on the bottom surface of the middle partition.

[0013] The battery packs and the electronic cans have the same height. The structure of the battery pack is as follows: It includes a battery body, and a left positioning pin is provided at the bottom of the battery body. The structure of the electronic can is as follows: It includes an electronic can body, and a right positioning pin is provided at the bottom of the electronic can body. The left positioning pin and the right positioning pin are both fitted with the partition.

[0014] The structure of the driving cylinder is as follows: It includes a cylinder barrel. A top small stud is provided on the top surface of the cylinder barrel. A limiting groove is opened below one side at the bottom of the cylinder barrel, and a water inlet hole is opened above one side of the cylinder barrel. A piston body is located inside the cylinder barrel. The piston body divides the cylinder barrel into upper and lower two chambers, namely a rodless chamber and a rod chamber. The piston body moves up and down in the cylinder barrel. A piston sealing ring is assembled at the middle part of the piston body. A piston rod body is welded at the bottom of the piston body. The piston rod body passes through the circular hole at the bottom of the cylinder barrel. Dynamic sealing is carried out between the piston rod body and the cylinder barrel through a piston rod sealing ring. A guide post is assembled on the front right side surface of the piston rod body. A limiting rod is vertically fixed on the piston rod body, and the left and right ends of the limiting rod are respectively located in the limiting groove for up and down movement.

[0015] The structure of the sonar is as follows: It includes a sonar body, a middle stud at the top is located on the top end face of the sonar body, and a positive terminal and a negative terminal are respectively located at the upper and lower positions on one side face of the sonar body.

[0016] The structure of the automatic contactor is as follows: It includes a contactor body in the shape of a cylindrical cavity. There is a cylindrical hole at the bottom of the contactor body. A large stud at the top is located on the top end face of the contactor body. An anode and a cathode are respectively located at the upper and lower positions on one side face of the contactor body. There are three pins in total, all located inside the contactor body. A moving piston is located inside the contactor body and is directly below the pins. A moving piston seal ring is sleeved on the cylindrical surface of the moving piston. There are three circumferentially arranged pin holes inside the moving piston. The three pin holes are in a plug-and-unplug connection relationship with the three pins. The ends of the pin holes are connected to electrode wires, and the electrode wires pass through the cylindrical hole and are connected to the cathode. The moving piston moves up and down inside the contactor body.

[0017] The structure of the bottom cover release assembly is as follows: It includes a bottom cover. Screws are evenly arranged circumferentially on the bottom cover. There is a central circular hole in the middle of the bottom cover. A separation plate covers the central circular hole. There is a small hole in the middle of the separation plate. An organic glass plate covers the small hole. A bottom cover seal ring is located in the upper seal groove of the bottom cover. An internal gear is located on the upper end face of the bottom cover and is inside the bottom cover seal ring. There are two groups of left and right sliding groove rotating kits, which penetrate the bottom cover up and down. The penetration positions are sealed by kit seal rings. The upper part of the sliding groove rotating kit has external teeth, and the external teeth mesh with the internal gear. The lower part is a locking structure that firmly locks the separation plate covering the central circular hole of the bottom cover.

[0018] The structure of the sliding groove rotating kit is as follows: It includes a locking block. A rotating sleeve is vertically installed on the locking block. The rotating sleeve adopts a hollow structure. A guiding hole is arranged at the center of the rotating sleeve. A spiral sliding groove is opened on the outer cylindrical surface of the rotating sleeve. An external gear is installed on the outer cylindrical surface of the rotating sleeve by key fit and is axially fixed by an end retaining ring. The external gear meshes with the internal gear.

[0019] The structure of the organic glass plate is as follows: It includes a cylindrical glass plate. A plurality of mounting holes are evenly distributed circumferentially on the cylindrical glass plate. A central thin surface is arranged at the center position of the cylindrical glass plate.

[0020] The beneficial effects of the present invention are as follows:

[0021] The structure of the present invention is compact and reasonable, and it is convenient to operate. It is hoisted and lowered in the deep sea by the hoisting winch of a surface ship or a deep-sea submersible. The equipment does not work during the lowering process, and it has multiple advantages such as energy conservation, no noise generation, and non-exposure of its own position. When the equipment is lowered to the predetermined depth, the weak surface of the plexiglass is burst by the high-pressure seawater outside the hull, and the high-pressure seawater is introduced into the pressure-resistant cabin. The high-pressure seawater is used as the power source to drive the piston to move, thereby driving the mechanism to rotate and driving the front baffle of the sonar to automatically disengage, creating a good vision for sonar detection. At the same time, the high-pressure seawater is used as the power source to drive the piston to move, and the automatic connection of the positive and negative electrodes of the sonar is completed, ensuring that the sonar can automatically start working after reaching the predetermined depth.

[0022] The present invention is ingeniously designed and has a simple structure, and has a wide range of uses in the hidden detection of deep-sea equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the internal structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the structure of the lifting ring of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the cover plate of the present invention.

[0026] Figure 4 It is a schematic diagram of the structure of the cover plate of the present invention from another perspective.

[0027] Figure 5 It is a schematic diagram of the structure of the pressure-resistant outer cylinder of the present invention.

[0028] Figure 6 It is a schematic diagram of the structure of the liner of the present invention.

[0029] Figure 7 It is a schematic diagram of the structure of the liner of the present invention from another perspective.

[0030] Figure 8 It is a schematic diagram of the structure of the battery pack of the present invention.

[0031] Figure 9 It is a schematic diagram of the structure of the electronic tank of the present invention.

[0032] Figure 10 It is a schematic diagram of the structure of the drive cylinder of the present invention.

[0033] Figure 11 It is a half-sectional view of the drive cylinder of the present invention.

[0034] Figure 12 It is a schematic diagram of the structure of the sonar of the present invention.

[0035] Figure 13 It is a schematic diagram of the structure of the automatic contactor of the present invention.

[0036] Figure 14 Half-sectional view of the automatic contactor of the present invention.

[0037] Figure 15 Cross-sectional view of the bottom cover release assembly of the present invention.

[0038] Figure 16 Schematic structural diagram of the bottom cover release assembly of the present invention.

[0039] Figure 17 Schematic structural diagram of the bottom cover release assembly from another perspective of the present invention.

[0040] Figure 18 Schematic structural diagram of the chute rotation kit of the present invention.

[0041] Figure 19 Schematic structural diagram of the plexiglass plate of the present invention.

[0042] Wherein: 1, lifting ring; 2, cover plate; 3, pressure-resistant outer cylinder; 4, liner cylinder; 5, battery pack; 6, electronic can; 7, drive cylinder; 8, sonar; 9, automatic contactor; 10, bottom cover release assembly;

[0043] 101, lifting cable; 102, U-shaped ring; 103, pin;

[0044] 201, lifting lug; 202, lifting hole; 203, circular plate; 204, screw hole; 205, sealing groove;

[0045] 301, outer cylinder body; 302, upper flange; 303, lower flange; 304, threaded hole;

[0046] 401, liner cylinder body; 402, intermediate partition; 403, top sealing groove; 404, upper left positioning hole; 405, upper right positioning hole; 406, lower left threaded hole; 407, lower middle threaded hole; 408, lower right threaded hole; 409, bottom sealing groove;

[0047] 501, battery body; 502, left positioning pin;

[0048] 601, electronic can body; 602, right positioning pin;

[0049] 701, cylinder barrel; 702, top stud; 703, limit groove; 704, water inlet hole; 705, piston body; 706, piston rod body; 707, limit rod; 708, guide post; 709, piston seal ring; 710, piston rod seal ring; 711, rodless cavity; 712, rod cavity;

[0050] 801, sonar body; 802, top middle stud; 803, positive terminal; 804, negative terminal;

[0051] 901. Contactor body; 902. Top large stud; 903. Anode; 904. Cathode; 905. Pin; 906. Moving piston; 907. Pinhole; 908. Moving piston seal ring; 909. Electrode wire; 910. Cylindrical hole

[0052] 1001. Bottom cover; 1002. Slide groove rotation kit; 1003. Internal gear; 1004. Separation plate; 1005. Plexiglass plate; 1006. Screw; 1007. Bottom cover seal ring; 1008. Kit seal ring; 1009. Separation plate seal ring; 1010. Short screw; 1011. Plexiglass plate seal ring

[0053] 100201. Rotating sleeve; 100202. Guide hole; 100203. Spiral slide groove; 100204. Shaft end retaining ring; 100205. External gear; 100206. Locking block

[0054] 100501. Cylindrical glass plate; 100502. Mounting hole; 100503. Central thin surface Detailed implementation mode

[0055] The following combines with the attached drawings to illustrate the detailed implementation mode of the present invention

[0056] As Figures 1 - 19 shown, the depth-fixed start device of the suspended sonar in this embodiment includes a pressure-resistant outer cylinder 3 with a hollow thin wall. The top surface of the pressure-resistant outer cylinder 3 is installed with a cover plate 2 through fasteners and seals. A lifting ring 1 is installed on the top surface of the cover plate 2. The bottom surface of the pressure-resistant outer cylinder 3 is installed with a bottom cover release assembly 10 through fasteners and seals; A liner 4 is installed in cooperation with the inner surface of the pressure-resistant outer cylinder 3. A partition is arranged in the middle of the liner 4, and the internal space is divided into upper and lower layers. A plurality of battery packs 5 and electronic cans 6 are arranged in the upper internal space, and a drive cylinder 7, a sonar 8 and an automatic contactor 9 are arranged in the lower internal space

[0057] The structure of the lifting ring 1 is: including a U-shaped ring 102, the top of the U-shaped ring 102 is connected to the lifting cable 101, and a pin 103 is inserted into the bottom of the U-shaped ring 102

[0058] The structure of the cover plate 2 is: including a circular plate 203, a lifting ear 201 is welded in the middle of the top surface of the circular plate 203. A plurality of lifting holes 202 are opened on the lifting ear 201. The lifting ear 201 is installed in cooperation with the lifting ring 1. A plurality of screw holes 204 are evenly distributed in the circumferential direction of the circular plate 203. A sealing groove 205 is opened on the bottom surface of the circular plate 203, and an O-shaped rubber sealing ring is installed in the sealing groove 205

[0059] The structure of the pressure-resistant outer cylinder 3 is as follows: It includes an outer cylinder body 301, with an upper flange 302 and a lower flange 303 respectively arranged at the upper and lower ends of the outer cylinder body 301, and circumferentially evenly distributed threaded holes 304 are opened on both the upper flange 302 and the lower flange 303;

[0060] The structure of the lining cylinder 4 is as follows: It includes a lining cylinder body 401, with an intermediate partition 402 arranged at the middle position of the lining cylinder body 401, a top sealing groove 403 and a bottom sealing groove 409 are respectively arranged on the top and bottom end faces of the lining cylinder body 401, two upper left positioning holes 404 and two upper right positioning holes 405 are drilled on the top surface of the intermediate partition 402, and a lower left threaded hole 406, a lower middle threaded hole 407 and a lower right threaded hole 408 are respectively drilled on the bottom surface of the intermediate partition 402.

[0061] The battery pack 5 and the electronic tank 6 have the same height. The structure of the battery pack 5 is as follows: It includes a battery body 501, with a left positioning pin 502 arranged at the bottom of the battery body 501; the structure of the electronic tank 6 is as follows: It includes an electronic tank body 601, with a right positioning pin 602 arranged at the bottom of the electronic tank body 601, and the left positioning pin 502 and the right positioning pin 602 are simultaneously matched with the partition.

[0062] The structure of the driving cylinder 7 is as follows: It includes a cylinder barrel 701, with a top small stud 702 arranged on the top surface of the cylinder barrel 701, a limiting groove 703 is opened below one side at the bottom of the cylinder barrel 701, a water inlet hole 704 is opened above one side of the cylinder barrel 701, a piston body 705 is located inside the cylinder barrel 701, and the piston body 705 divides the cylinder barrel 701 into two upper and lower chambers, namely a rodless chamber 711 and a rod chamber 712. The piston body 705 moves up and down in the cylinder barrel 701. A piston sealing ring 709 is assembled at the middle part of the piston body 705, and a piston rod body 706 is welded to the bottom of the piston body 705. The piston rod body 706 passes through the circular hole at the bottom of the cylinder barrel 701, and dynamic sealing between the piston rod body 706 and the cylinder barrel 701 is carried out through a piston rod sealing ring 710. A guide post 708 is assembled on the front right side surface of the piston rod body 706, and a limiting rod 707 is vertically fixed on the piston rod body 706, and the left and right ends of the limiting rod 707 are respectively located in the limiting groove 703 for up and down movement.

[0063] The structure of the sonar 8 is as follows: It includes a sonar body 801, with a top middle stud 802 located on the top end face of the sonar body 801, and a positive terminal 803 and a negative terminal 804 are respectively located at the upper and lower positions on one side surface of the sonar body 801.

[0064] The structure of the automatic contactor 9 is as follows: It includes a contactor body 901 with a cylindrical cavity structure. A cylindrical hole 910 is provided at the bottom of the contactor body 901. The top large stud 902 is located on the top end face of the contactor body 901. The anode 903 and the cathode 904 are respectively located at the upper and lower positions on one side of the contactor body 901. There are three pins 905 in total, all located inside the contactor body 901. The moving piston 906 is located inside the contactor body 901 and is directly below the pins 905. A moving piston seal ring 908 is sleeved on the cylindrical surface of the moving piston 906. Three circumferentially arranged pin holes 907 are provided inside the moving piston 906. The three pin holes 907 are in a plug-and-play connection with the three pins 905. The end of the pin hole 907 is connected to the electrode wire 909. The electrode wire 909 passes through the cylindrical hole 910 and is connected to the cathode 904. The moving piston 906 moves up and down inside the contactor body 901.

[0065] The structure of the bottom cover release assembly 10 is as follows: It includes a bottom cover 1001. Screws 1006 are evenly arranged circumferentially on the bottom cover 1001. There is a central circular hole in the middle of the bottom cover 1001. The separation plate 1004 covers the central circular hole. A small hole is provided in the middle of the separation plate 1004. The plexiglass plate 1005 covers the small hole. The bottom cover seal ring 1007 is located in the upper sealing groove of the bottom cover 1001. The internal gear 1003 is located on the upper end face of the bottom cover 1001 and is inside the bottom cover seal ring 1007. There are two sets of left and right sliding groove rotating kits 1002, which penetrate the bottom cover 1001 up and down. The penetration position is sealed by a kit seal ring 1008. The upper part of the sliding groove rotating kit 1002 has external teeth, and the external teeth are meshed with the internal gear 1003. The lower part is a locking structure that firmly locks the separation plate 1004 covering the central circular hole of the bottom cover 1001.

[0066] The structure of the sliding groove rotating kit 1002 is as follows: It includes a locking block 100206. A rotating sleeve 100201 is vertically installed on the locking block 100206. The rotating sleeve 100201 adopts a hollow structure. A guide hole 100202 is provided at the center of the rotating sleeve 100201. A spiral sliding groove 100203 is provided on the outer cylindrical surface of the rotating sleeve 100201. The external gear 100205 is installed on the outer cylindrical surface of the rotating sleeve 100201 by key fitting and is axially fixed by a shaft end retaining ring 100204. The external gear 100205 is meshed with the internal gear 1003.

[0067] The structure of the plexiglass plate 1005 is as follows: It includes a cylindrical glass plate 100501. A plurality of mounting holes 100502 are evenly arranged circumferentially on the cylindrical glass plate 100501. A central thin surface 100503 is provided at the center position of the cylindrical glass plate 100501.

[0068] The specific structure and functions of the dipping sonar depth setting and starting device of the present invention are as follows:

[0069] It mainly consists of a lifting ring 1, a cover plate 2, a pressure-resistant outer cylinder 3, a lining cylinder 4, a battery pack 5, an electronic can 6, a driving cylinder 7, a sonar 8, an automatic contactor 9, and a bottom cover release assembly 10.

[0070] The pin shaft of the lifting ring 1 is connected to the lifting lug 201 on the top surface of the cover plate 2. The cover plate 2 is connected to the top flange of the pressure-resistant outer cylinder 3 by screws and sealed with an O-ring. The lining cylinder 4 is located inside the pressure-resistant outer cylinder 3. There is a partition in the middle of the lining cylinder 4, dividing its internal space into upper and lower layers. The upper layer is arranged with the battery pack 5 and the electronic can 6, and the lower layer is arranged with the driving cylinder 7, the sonar 8, and the automatic contactor 9. The bottom cover release assembly 10 is connected to the bottom flange of the pressure-resistant outer cylinder 3 by screws and sealed with an O-ring between them.

[0071] Among them, the lifting ring 1 mainly consists of a dipping cable 101, a U-shaped ring 102, and a bolt 103. The dipping cable 101 is welded to the top end face of the U-shaped ring 102, and the bolt 103 is inserted into the bottom of the U-shaped ring 102 from right to left.

[0072] Among them, the cover plate 2 mainly consists of a lifting lug 201, a lifting hole 202, a circular plate 203, screw holes 204, and a sealing groove 205. The lifting lug 201 is vertically welded to the upper plane of the circular plate 203. There are three lifting holes 202, which are evenly arranged on the lifting lug 201. The screw holes 204 are circumferentially and evenly distributed on the circular plate 203. The lower plane of the circular plate 203 is provided with a sealing groove 205, in which an O-shaped rubber sealing ring can be installed. The sealing groove 205 is located inside the circumferentially and evenly distributed screw holes 204.

[0073] Among them, the pressure-resistant outer cylinder 3 mainly consists of an outer cylinder body 301, an upper end flange 302, a lower end flange 303, and threaded holes 304. The upper end flange 302 and the lower end flange 303 are respectively located at the upper and lower ends of the outer cylinder body 301. The end faces of the upper end flange 302 and the lower end flange 303 are both provided with circumferentially and evenly distributed threaded holes 304.

[0074] Among them, the bushing 4 is mainly composed of a bushing body 401, an intermediate partition 402, a top sealing groove 403, an upper left positioning hole 404, an upper right positioning hole 405, a lower left threaded hole 406, a lower middle threaded hole 407, a lower right threaded hole 408, and a bottom sealing groove 409. The top sealing groove 403 and the bottom sealing groove 409 are respectively located on the top and bottom end faces of the bushing body 401, and an O-ring rubber seal can be installed therein. The intermediate partition 402 is located in the middle of the interior of the bushing body 401, and it divides the interior space of the bushing body 401 into upper and lower parts. Two upper left positioning holes 404 and two upper right positioning holes 405 are respectively drilled on the top surface of the intermediate partition 402, and a lower left threaded hole 406, a lower middle threaded hole 407, and a lower right threaded hole 408 are respectively drilled on the bottom surface of the intermediate partition 402.

[0075] Among them, the battery pack 5 is mainly composed of a battery body 501 and a left positioning pin 502. There are two left positioning pins 502, both of which are located on the bottom end face of the battery body 501.

[0076] Among them, the electronic can 6 is mainly composed of an electronic can body 601 and a right positioning pin 602. There are two right positioning pins 602, both of which are located on the bottom end face of the electronic can body 601.

[0077] Among them, the driving cylinder 7 is mainly composed of a cylinder barrel 701, a top small stud 702, a limiting groove 703, a water inlet hole 704, a piston body 705, a piston rod body 706, a limiting rod 707, a guiding column 708, a piston seal ring 709, a piston rod seal ring 710, a rodless cavity 711, and a rod cavity 712. The top small stud 702 is located on the top end face of the cylinder barrel 701. A limiting groove 703 is opened at the bottom of the cylinder barrel 701. A water inlet hole 704 is opened on the right side face of the cylinder barrel 701. The piston body 705 is located inside the cylinder barrel 701, and it divides the cylinder barrel 701 into upper and lower two chambers, namely the rodless cavity 711 and the rod cavity 712. The piston body 705 can move up and down inside the cylinder barrel 701. A piston seal ring 709 is assembled in the middle part of the piston body 705. The piston rod body 706 is welded to the bottom of the piston body 705, and the piston rod body 706 passes through the bottom round hole of the cylinder barrel 701, and dynamic sealing is carried out between the two through the piston rod seal ring 710. The guiding column 708 is assembled on the front right side face of the piston rod body 706. The limiting rod 707 is vertically fixed on the piston rod body 706, and the left and right ends of the limiting rod 707 are respectively located in the limiting groove 703 and can only move up and down.

[0078] Among them, the sonar 8 is mainly composed of a sonar body 801, a top middle stud 802, a positive terminal 803, and a negative terminal 804. The top middle stud 802 is located on the top end face of the sonar body 801. The positive terminal 803 and the negative terminal 804 are respectively located at the upper and lower positions on the right side face of the sonar body 801.

[0079] Among them, the automatic contactor 9 mainly consists of a contactor body 901, a top large stud 902, an anode 903, a cathode 904, a pin 905, a moving piston 906, a pin hole 907, a moving piston sealing ring 908, an electrode wire 909, and a cylindrical hole 910. The contactor body 901 has a cylindrical cavity structure. A cylindrical hole 910 is provided at its bottom. The top large stud 902 is located on the top end face of the contactor body 901. The anode 903 and the cathode 904 are respectively located at the upper and lower positions on the left side face of the contactor body 901. There are three pins 905, all of which are located inside the contactor body 901. The moving piston 906 is located inside the contactor body 901 and is directly below the pins 905. A moving piston sealing ring 908 is sleeved on the cylindrical surface of the moving piston 906. Three circumferentially arranged pin holes 907 are provided inside the moving piston 906. The three pin holes 907 and the three pins 905 are in a plug-and-play connection relationship. The end of the pin hole 907 is connected to the electrode wire 909. The electrode wire 909 passes through the cylindrical hole 910 and is connected to the cathode 904. The moving piston 906 can move up and down inside the contactor body 901.

[0080] Among them, the bottom cover release assembly 10 mainly consists of a bottom cover 1001, a chute rotating kit 1002, an internal gear 1003, a separation plate 1004, an organic glass plate 1005, a screw 1006, a bottom cover sealing ring 1007, a kit sealing ring 1008, a separation plate sealing ring 1009, a short screw 1010, and an organic glass plate sealing ring 1011. Screws 1006 are evenly arranged circumferentially on the bottom cover 1001. There is a central circular hole in the middle of the bottom cover 1001. The separation plate 1004 covers the central circular hole. A separation plate sealing ring 1009 is provided between them. There is also a central circular hole in the middle of the separation plate 1004. The organic glass plate 1005 covers the central circular hole. An organic glass plate sealing ring 1011 is provided between them and is fixed by circumferentially arranged short screws 1010. The bottom cover sealing ring 1007 is located in the upper sealing groove of the bottom cover 1001. The internal gear 1003 is located on the upper end face of the bottom cover 1001 and is located inside the bottom cover sealing ring 1007. There are two sets of left and right chute rotating kits 1002, which penetrate the bottom cover 1001 up and down. The penetration position is sealed by a kit sealing ring 1008. The upper part of the chute rotating kit 1002 has external teeth, and the external teeth mesh with the internal gear 1003. The lower part is a locking structure that firmly locks the separation plate 1004 covering the central circular hole of the bottom cover 1001.

[0081] Among them, the chute rotation kit 1002 is mainly composed of a rotating sleeve 100201, a guide hole 100202, a spiral chute 100203, an end shaft retaining ring 100204, an external gear 100205, and a locking block 100206. The rotating sleeve 100201 has a hollow structure, with a guide hole 100202 formed inside it and a spiral chute 100203 formed on its outer cylindrical surface. The rotating sleeve 100201 is perpendicularly welded to the top surface of the locking block 100206. The external gear 100205 is sleeved on the outer cylindrical surface of the rotating sleeve 100201, and the two are connected by a flat key and axially fixed by the end shaft retaining ring 100204.

[0082] Among them, the plexiglass plate 1005 is mainly composed of a cylindrical glass plate 100501, mounting holes 100502, and a central thin surface 100503. The mounting holes 100502 are circumferentially distributed on the cylindrical glass plate 100501. The central thin surface 100503 is located at the center of the cylindrical glass plate 100501 and has a relatively thinner thickness compared to the thickness of the cylindrical glass plate 100501, serving as the structural strength weak point of the plexiglass plate 1005.

[0083] During the actual working process:

[0084] The installation method of the depth-fixed starting device of the sonar suspended by the invention is as follows:

[0085] The bottom cover release assembly 10 is integrally installed on the lower flange 303 of the pressure-resistant outer cylinder 3, and is locked and fixed by tightening the screw 1006 in the bottom cover release assembly 10 into the bottom threaded hole 304 of the pressure-resistant outer cylinder 3. The two are sealed by the bottom cover sealing ring 1007 on the bottom cover release assembly 10. Then, the driving cylinder 7 is tightened into the lower left threaded hole 406 of the liner 4 through the small stud 702 at its top, the sonar 8 is tightened into the lower middle threaded hole 407 of the liner 4 through the middle stud 802 at its top, the automatic contactor 9 is tightened into the lower right threaded hole 408 through the large stud 902 at its top, and the anode 903 on the left side of the automatic contactor 9 is connected to the positive terminal 803 on the right side of the sonar body 801 with a cable, and the cathode 904 is connected to the negative terminal 804. Then, the battery pack 5 is placed in the upper space of the liner 4. The two left positioning pins 502 at the bottom of the battery pack 5 are inserted into the upper left positioning holes 404 of the liner 4. The electronic can 6 is placed in the upper space of the liner 4, and the two right positioning pins 602 at the bottom of the electronic can 6 are inserted into the upper right positioning holes 405 of the liner 4 to complete the positioning. Then, the liner 4 after the equipment is installed in place is integrally lifted and placed into the pressure-resistant outer cylinder 3. During the lifting and placing process, ensure that the bottom cylindrical section of the piston rod body 706 in the driving cylinder 7 is accurately inserted into the guiding hole 100202 of the sliding groove rotating kit 1002 of the bottom cover release assembly 10, and at the same time ensure that the guiding column 708 in the driving cylinder 7 can slide in the spiral sliding groove 100203 of the sliding groove rotating kit 1002 of the bottom cover release assembly 10. Then, the cover plate 2 is tightened on the upper flange 302 of the pressure-resistant outer cylinder 3 and locked and fixed with an internal hexagonal screw. The two are sealed by an O-ring. Then, the pin 103 of the lifting ring 1 is inserted into the lifting hole 202 of the lifting lug 201 of the cover plate 2 to complete the connection. Finally, the lifting cable 101 is wound around the lifting winch of the surface ship or the deep-sea submersible.

[0086] The depth-fixed start device of the suspended sonar of the present invention works as follows:

[0087] Lower the suspension cable 101 through the suspension winch of a surface ship or a deep-sea submersible. As the suspension cable 101 is lowered, the depth of the depth setting and starting device of the suspended sonar of the present invention gradually becomes deeper. During the lowering process, the pressure-resistant outer cylinder 3, the cover plate 2 and the bottom cover release assembly 10 form a sealed pressure-resistant chamber. The internal battery pack 5, the electronic can 6, the drive cylinder 7, the sonar 8, the automatic contactor 9, etc. are all in an atmospheric pressure working environment. The pin 905 and the pinhole 907 in the automatic contactor 9 always remain separated. At this time, the power supply line of the suspended sonar is not connected, and it is in a power-off state. As the lowering depth gradually increases, the external seawater pressure gradually increases. Until it is lowered to near the preset seawater depth, the strong seawater pressure bursts the central thin surface 100503 of the plexiglass plate 1005 of the bottom cover release assembly 10, and the external high-pressure seawater pours into the sealed pressure-resistant chamber formed by the pressure-resistant outer cylinder 3, the cover plate 2 and the bottom cover release assembly 10 along the central hole of the separation plate 1004 of the bottom cover release assembly 10. The high-pressure seawater enters the rodless chamber 711 through the water inlet hole 704 on the right side of the drive cylinder 7. The high-pressure seawater pushes the piston body 705, the piston rod body 706 and the guide post 708 to move downward. Since the guide post 708 can slide in the spiral chute 100203 of the chute rotating kit 1002 of the bottom cover release assembly 10, when the guide post 708 moves downward, it drives the chute rotating kit 1002 to rotate. At the same time, through the meshing relationship between the external gear 100205 on the chute rotating kit 1002 and the internal gear 1003, it drives the chute rotating kit 1002 on the other side to rotate, thereby driving the locking block 100206 to rotate 90 degrees, thus unlocking the separation plate 1004 covering the central circular hole of the bottom cover 1001. After unlocking, the separation plate 1004 falls off by its own gravity, thus removing the blockage for the normal downward detection of the sonar 8; at the same time, the high-pressure seawater pushes the moving piston 906 to slide upward through the cylindrical hole 910 at the bottom of the automatic contactor 9, prompting the three pins 905 and the three pinholes 907 to achieve automatic plugging and unplugging connection. The battery pack 5 provides working electrical energy for the sonar 8. Because the anode 903 on the left side of the automatic contactor 9 is connected to the positive terminal 803 on the right side of the sonar body 801, and the cathode 904 is connected to the negative terminal 804, the working circuit of the sonar 8 is connected, automatically starting the acoustic detection function, and storing the detected acoustic data in the electronic can 6.

[0088] The above description is an explanation of the present invention, not a limitation of the invention. The scope defined by the present invention is referred to the claims. Any form of modification can be made within the protection scope of the present invention.

Claims

1. A dipping sonar depth-setting starting device, characterized in that: It includes a pressure-resistant outer cylinder (3) with a hollow thin wall. The top surface of the pressure-resistant outer cylinder (3) is installed with a cover plate (2) through fasteners and seals. A lifting ring (1) is installed on the top surface of the cover plate (2). The bottom surface of the pressure-resistant outer cylinder (3) is installed with a bottom cover release assembly (10) through fasteners and seals; A lining cylinder (4) is fitted on the inner surface of the pressure-resistant outer cylinder (3). A partition is provided in the middle of the lining cylinder (4), and the inner space is divided into upper and lower layers. A plurality of battery packs (5) and electronic cans (6) are arranged in the upper inner space, and a driving cylinder (7), a sonar (8) and an automatic contactor (9) are arranged in the lower inner space.

2. The depth-setting starting device of a dipping sonar according to claim 1, characterized in that: The structure of the lifting ring (1) is: it includes a U-shaped ring (102). The top of the U-shaped ring (102) is connected to a lifting cable (101), and a pin (103) is inserted into the bottom of the U-shaped ring (102); The structure of the cover plate (2) is: it includes a circular plate (203). A lifting lug (201) is welded at the middle position on the top surface of the circular plate (203). A plurality of lifting holes (202) are opened on the lifting lug (201). The lifting lug (201) is fitted and installed with the lifting ring (1). A plurality of screw holes (204) are evenly distributed in the circumferential direction of the circular plate (203). A sealing groove (205) is opened on the bottom surface of the circular plate (203), and an O-shaped rubber sealing ring is installed in the sealing groove (205).

3. The depth-setting starting device for dipping sonar according to claim 1, characterized in that: The structure of the pressure-resistant outer cylinder (3) is: it includes an outer cylinder body (301). Upper end flanges (302) and lower end flanges (303) are respectively provided at the upper and lower ends of the outer cylinder body (301). Threaded holes (304) evenly distributed in the circumferential direction are opened on both the upper end flange (302) and the lower end flange (303); The structure of the lining cylinder (4) is: it includes a lining cylinder body (401). A middle partition (402) is provided at the middle position of the lining cylinder body (401). Top sealing grooves (403) and bottom sealing grooves (409) are respectively provided on the top and bottom end faces of the lining cylinder body (401). Two upper left positioning holes (404) and two upper right positioning holes (405) are drilled on the top surface of the middle partition (402). A lower left threaded hole (406), a lower middle threaded hole (407) and a lower right threaded hole (408) are respectively drilled on the bottom surface of the middle partition (402).

4. The depth-setting starting device of a dipping sonar according to claim 1, characterized in that: The battery packs (5) and the electronic cans (6) have the same height. The structure of the battery pack (5) is: it includes a battery body (501), and a left positioning pin (502) is provided at the bottom of the battery body (501); The structure of the electronic can (6) is: it includes an electronic can body (601), and a right positioning pin (602) is provided at the bottom of the electronic can body (601). The left positioning pin (502) and the right positioning pin (602) cooperate with the partition at the same time.

5. The depth-setting starting device of a dipping sonar according to claim 1, wherein: The structure of the drive cylinder (7) is as follows: It includes a cylinder barrel (701). A top small stud (702) is provided on the top surface of the cylinder barrel (701). A limit groove (703) is opened below one side of the bottom of the cylinder barrel (701). A water inlet hole (704) is opened above one side of the cylinder barrel (701). A piston body (705) is located inside the cylinder barrel (701). The piston body (705) divides the cylinder barrel (701) into two upper and lower chambers, namely a rodless chamber (711) and a rod chamber (712). The piston body (705) moves up and down inside the cylinder barrel (701). A piston seal ring (709) is assembled at the middle part of the piston body (705). A piston rod body (706) is welded to the bottom of the piston body (705). The piston rod body (706) passes through the round hole at the bottom of the cylinder barrel (701). Dynamic sealing between the piston rod body (706) and the cylinder barrel (701) is achieved through a piston rod seal ring (710). A guide post (708) is assembled on the front right side surface of the piston rod body (706). A limit rod (707) is vertically fixed on the piston rod body (706), and the left and right ends of the limit rod (707) are respectively located in the limit groove (703) for up and down movement.

6. The depth-setting starting device of a dipping sonar according to claim 1, characterized in that: The structure of the sonar (8) is as follows: It includes a sonar body (801). A top middle stud (802) is located on the top end face of the sonar body (801). A positive terminal (803) and a negative terminal (804) are respectively located at the upper and lower positions on one side surface of the sonar body (801).

7. The depth-setting starting device of a dipping sonar according to claim 1, characterized in that: The structure of the automatic contactor (9) is as follows: It includes a contactor body (901) in a cylindrical cavity structure. A cylindrical hole (910) is provided at the bottom of the contactor body (901). A top large stud (902) is located on the top end face of the contactor body (901). An anode (903) and a cathode (904) are respectively located at the upper and lower positions on one side surface of the contactor body (901). There are three pin needles (905) in total, all located inside the contactor body (901). A moving piston (906) is located inside the contactor body (901) and is directly below the pin needles (905). A moving piston seal ring (908) is sleeved on the cylindrical surface of the moving piston (906). Three circumferentially arranged pin holes (907) are opened inside the moving piston (906). The three pin holes (907) and the three pin needles (905) are in a plug-and-play connection relationship. The end of the pin hole (907) is connected to an electrode wire (909). The electrode wire (909) passes through the cylindrical hole (910) and is connected to the cathode (904). The moving piston (906) moves up and down inside the contactor body (901).

8. The depth-fixed starting device of a dipping sonar according to claim 1, wherein: The structure of the bottom cover release assembly (10) is as follows: It includes a bottom cover (1001), with screws (1006) evenly arranged circumferentially on the bottom cover (1001). There is a central circular hole in the middle of the bottom cover (1001). The separation plate (1004) covers the central circular hole. A small hole is opened in the middle of the separation plate (1004), and the plexiglass plate (1005) covers the small hole. The bottom cover sealing ring (1007) is located in the upper sealing groove of the bottom cover (1001). The internal gear (1003) is located on the upper end surface of the bottom cover (1001) and inside the bottom cover sealing ring (1007). There are two sets of left - right chute rotating kits (1002), which penetrate the bottom cover (1001) vertically and are sealed at the penetration position by the kit sealing ring (1008). The upper part of the chute rotating kit (1002) has external teeth that mesh with the internal gear (1003), and the lower part is a locking structure that firmly locks the separation plate (1004) covering the central circular hole of the bottom cover (1001).

9. The depth-setting starting device of a dipping sonar according to claim 8, characterized in that: The structure of the chute rotating kit (1002) is as follows: It includes a locking block (100206), on which a rotating sleeve (100201) is vertically installed. The rotating sleeve (100201) has a hollow structure. A guiding hole (100202) is set in the center of the rotating sleeve (100201). A spiral chute (100203) is opened on the outer cylindrical surface of the rotating sleeve (100201). The external gear (100205) is installed on the outer cylindrical surface of the rotating sleeve (100201) by key fit and is axially fixed by an end - shaft retaining ring (100204). The external gear (100205) meshes with the internal gear (1003).

10. A dipping sonar depth setting and starting device according to claim 8, characterized in that: The structure of the plexiglass plate (1005) is as follows: It includes a cylindrical glass plate (100501), with a plurality of mounting holes (100502) evenly distributed circumferentially on the cylindrical glass plate (100501). A central thin surface (100503) is set at the central position of the cylindrical glass plate (100501).

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