Insulated mounting of electrical equipment on a ship

Abstract

The application relates to the technical field of ship electrical equipment, and discloses a ship electrical equipment insulation installation grounding device, which comprises a chassis installed on the top of a ship deck, an insulation pad fixedly connected to the bottom of the chassis, insulation fixing rods fixedly connected to the two sides of the chassis, a grounding connecting block fixedly connected to the end of the insulation fixing rod away from the chassis, a coil fixedly connected to one side of the grounding connecting block, an upper end grounding block fixedly connected to the other end of the coil, an insulation support frame sleeved outside the coil, and the grounding connecting block and the upper end grounding block are fixedly connected with the insulation support frame. The current direction limiting assembly can limit the current direction, so that the current cannot flow from the aluminum ship deck to the steel electrical equipment, the loop cannot be formed between the steel electrical equipment and the aluminum ship deck, and the original battery cannot be formed. Therefore, the steel electrical equipment can be grounded, and the probability of electrochemical corrosion of the aluminum ship deck or the steel electrical equipment can be reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of ship electrical equipment, and particularly relates to a ship electrical equipment insulation installation grounding device. BACKGROUND

[0002] During ship sailing, the ship will shake and vibrate due to sea waves, wind waves and other factors. Once the electrical equipment is not fixed well, displacement will easily occur, which not only affects the normal operation of the equipment, but also can cause damage to the structure of the ship and other equipment. Therefore, in order to ensure the safety of the ship during sailing, the smooth operation of the equipment and the personal safety of the maintenance personnel, the electrical equipment on the ship usually needs to be fixed by means of a support.

[0003] As shown in the patent with the authorized announcement number CN222282506U, a ship electrical equipment insulation installation grounding device is disclosed, which comprises a deck, a protection box arranged on the deck and an electrical mechanism arranged in the protection box, and further comprises a lifting assembly, the lifting assembly comprising a base frame arranged on the deck, two groups of symmetrical cross connecting rods rotatably connected to the base frame, a cross plate arranged between the two groups of cross connecting rods and a lifting plate arranged at the top of the cross connecting rods, wherein a sliding groove is formed in the inner side wall of the base frame, and one end of the two groups of cross connecting rods is provided with a sliding rod matched with the sliding groove, and a driving piece is further arranged between the cross plate and the base frame; a damping assembly is arranged between the lifting plate and the electrical mechanism, and is used for damping the electrical mechanism during ship sailing; the ship electrical equipment insulation installation grounding device can lift the electrical equipment, facilitate the maintenance of the electrical equipment when the deck vibrates or shakes, and can also prevent the electrical equipment from being affected by the deck vibration to affect the original protection and working performance of the equipment.

[0004] The above-mentioned insulation installation grounding device still has certain defects:

[0005] In order to prevent electric shock accidents and ensure the smooth operation of the electrical equipment, the grounding device is generally used to process the grounding of the electrical equipment on the ship. However, with the progress of material science and the innovation of ship design concept, part of the modern ship bodies are made of aluminum alloy, which not only maintains the necessary structural strength, but also improves the sailing performance by reducing the self weight. However, when the steel electrical equipment is fixed on the aluminum ship deck and connected through the grounding device, once exposed to the electrolyte environment such as seawater, a corrosion battery is easily formed between the two, triggering an electrochemical corrosion process. This phenomenon not only causes damage to the steel electrical equipment, but also corrodes the aluminum ship deck, thereby affecting the overall safety and service life of the ship. SUMMARY

[0006] The ship electrical equipment insulation installation grounding device makes the steel electrical equipment not easy to form a primary cell when grounded on the aluminum ship deck, and reduces the probability of corrosion of the aluminum ship deck or the steel electrical equipment.

[0007] To achieve the above-mentioned purpose, the application provides the following technical scheme: a ship electrical equipment insulation installation grounding device, comprising a chassis installed on the top of the ship deck, an insulating pad is fixedly connected to the bottom of the chassis, insulating fixing rods are fixedly connected to the two sides of the chassis, a grounding connecting block is fixedly connected to the end of the insulating fixing rod away from the chassis, a coil is fixedly connected to one side of the grounding connecting block, an upper end grounding block is fixedly connected to the other end of the coil, an insulating support frame is sleeved outside the coil, the grounding connecting block and the upper end grounding block are fixedly connected with the insulating support frame, an electric leakage display assembly is fixedly connected to the top of the insulating support frame, a current direction limiting assembly is slidingly connected to the bottom of the grounding connecting block, and a lower end grounding block is slidingly connected to the bottom of the current direction limiting assembly.

[0008] Further, the current direction limiting assembly comprises a left side insulating shell, a right side insulating shell, a grounding conductive block, a one-way conductive module and a plug, the left side insulating shell and the right side insulating shell are hingedly connected with each other, the top and the bottom of the inner sides of the left side insulating shell and the right side insulating shell are fixedly connected with the grounding conductive block, a receiving groove is left between the two grounding conductive blocks, the one-way conductive module is placed in the receiving groove, the two ends of the one-way conductive module are in abutment with the grounding conductive block, the top and the bottom of the left side insulating shell and the right side insulating shell are provided with the plug fixedly connected with the grounding conductive block, and the bottom of the grounding connecting block and the top of the lower end grounding block are provided with plug grooves matched with the plug.

[0009] Further, the upper end and the lower end of the outer wall of the left side insulating shell and the right side insulating shell are provided with positioning grooves, positioning sliding blocks are slidingly connected in the positioning grooves, a positioning column is slidingly connected to the middle position of the positioning sliding block, the two ends of the positioning column are fixedly connected with the top and the bottom of the positioning groove, a positioning elastic piece is sleeved at the end of the positioning column close to the receiving groove, one end of the positioning elastic piece is fixedly connected with the end of the positioning groove, the other end of the positioning elastic piece is fixedly connected with the positioning sliding block, and a positioning plate is fixedly connected to the side of the positioning sliding block away from the grounding conductive block.

[0010] Further, one side of the left side insulation shell is fixedly connected with a clamping block, a limiting groove is formed in the side of the right side insulation shell close to the clamping block, a limiting slider is slidably connected in the limiting groove, a limiting column is slidably connected in the middle position of the limiting slider, the limiting column is fixedly connected with the top and bottom of the limiting groove at two ends respectively, a limiting elastic member is sleeved with the end of the limiting column away from the clamping block, one end of the limiting elastic member is fixedly connected with the end of the limiting groove, the other end of the limiting elastic member is fixedly connected with the limiting slider, a hooking block is fixedly connected with the side of the limiting slider away from the right side insulation shell, the hooking block is matched with the clamping block, and a gripping block is fixedly connected with the side of the hooking block away from the limiting slider.

[0011] Further, the electric leakage display assembly comprises an iron core, a display sleeve, a limiting block, a mounting plate, a reset elastic member and a permanent magnet, the middle position of the coil is provided with the iron core, two ends of the iron core are fixedly connected with the top and bottom of the inner side of the insulation support frame respectively, the top of the insulation support frame is fixedly connected with the display sleeve, the display sleeve is located directly above the iron core, the top of the display sleeve is fixedly connected with the limiting block, the top of the display sleeve is provided with the mounting plate, the mounting plate is provided with a mounting groove matched with the limiting block, the bottom of the mounting plate is fixedly connected with the reset elastic member, the bottom of the reset elastic member is fixedly connected with the permanent magnet, and the middle position of the display sleeve is provided with a display window.

[0012] Further, the outer wall of the upper end of the permanent magnet is fixedly connected with an electric leakage state indicating ring, and the outer wall of the lower end of the permanent magnet is fixedly connected with a normal state indicating ring.

[0013] Further, the outer wall of the mounting plate is fixedly connected with a rotating ring, the outer part of the mounting plate is sleeved with a threaded ring, the inner side of the threaded ring is provided with a rotating groove matched with the rotating ring at the upper end, the threaded ring is in threaded connection with the display sleeve, and the outer wall of the threaded ring is fixedly connected with a pushing block.

[0014] Further, the lower end of the inner side of the display sleeve is fixedly connected with an iron ring, the middle position of the mounting plate is slidably connected with a reset rod, and the lower end of the reset rod is fixedly connected with the permanent magnet and penetrates through the mounting plate.

[0015] Compared with the prior art, the present application has the following beneficial effects:

[0016] 1. The grounding device for the insulating installation of the ship electrical equipment, when the steel electrical equipment leaks electricity, the current direction limiting assembly can guide the leaked current of the electrical equipment to the aluminum ship deck, and the current can enter the ground through the water after entering the aluminum ship deck, so as to avoid electric shock accidents when the human body touches the electrical equipment, but the current direction limiting assembly can limit the direction of the current, so that the current cannot flow from the aluminum ship deck to the steel electrical equipment, so that the steel electrical equipment and the aluminum ship deck cannot form a loop, and thus the formation of the primary battery between the steel electrical equipment and the aluminum ship deck is prevented, so that the steel electrical equipment can be grounded, and the probability of electrochemical corrosion of the aluminum ship deck or the steel electrical equipment is reduced.

[0017] 2. The grounding device for the insulating installation of the ship electrical equipment, when the steel electrical equipment leaks electricity, the current flowing through the coil can generate a magnetic field, and then magnetize the iron core, and the magnetic pole at the upper end of the magnetized iron core is different from that at the lower end of the permanent magnet, so that the iron core attracts the permanent magnet to move downward, and the staff can judge whether the electrical equipment leaks electricity by observing the position of the permanent magnet.

[0018] 3. The grounding device for the insulating installation of the ship electrical equipment, when the steel electrical equipment leaks electricity, the permanent magnet is attracted by the iron core and moves downward by a distance, and after the permanent magnet moves a distance, the permanent magnet contacts the iron ring and is then adsorbed and fixed on the iron ring, even if the electrical equipment is intermittent leakage, the position of the permanent magnet can indicate that the electrical equipment has leaked electricity, which is convenient for maintenance personnel to judge the state of the electrical equipment. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the whole application;

[0020] Figure 2 It is a schematic diagram of the connection structure of the grounding connecting block, the upper end grounding block and the lower end grounding block;

[0021] Figure 3 It is a schematic diagram of the connection structure of the grounding connecting block, the coil and the upper end grounding block;

[0022] Figure 4 It is a schematic diagram of the structure of the lower end grounding block;

[0023] Figure 5 It is a schematic diagram of the structure of the leakage display assembly when it is expanded;

[0024] Figure 6 It is a schematic diagram of the structure of the current direction limiting assembly when it is expanded;

[0025] Figure 7 It is a partial sectional view of the current direction limiting assembly;

[0026] Figure 8 A local enlarged structure schematic view at A in the present application Figure 7 A local enlarged structure schematic view at A in the present application

[0027] Figure 9 A local enlarged structure schematic view at A in the present application Figure 7 A local enlarged structure schematic view at A in the present application

[0028] Figure 10 A structure schematic view of the hooking block of the present application.

[0029] In the figure: 1, the base frame; 2, the insulating pad; 3, the insulating fixed rod; 4, the grounding connecting block; 5, the coil; 6, the upper end grounding block; 7, the insulating support frame; 8, the iron core; 9, the insertion slot; 10, the left side insulating shell; 11, the right side insulating shell; 12, the grounding conductive block; 13, the storage slot; 14, the one-way conductive module; 15, the lower end grounding block; 16, the insertion block; 17, the limiting slot; 18, the limiting column; 19, the limiting elastic piece; 20, the limiting sliding block; 21, the hooking block; 22, the gripping block; 23, the clamping block; 24, the positioning slot; 25, the positioning column; 26, the positioning elastic piece; 27, the positioning sliding block; 28, the positioning plate; 29, the display sleeve; 30, the display window; 31, the limiting block; 32, the iron ring; 33, the mounting plate; 34, the mounting slot; 35, the reset rod; 36, the reset elastic piece; 37, the permanent magnet; 38, the electric leakage state indicating ring; 39, the normal state indicating ring; 40, the threaded ring; 41, the rotating ring; 42, the rotating slot; 43, the pushing block; 44, the electrical equipment; 45, the ship deck. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0031] Please refer to Figures 1 to 10 A ship electrical equipment insulation installation grounding device, comprising a base frame 1 installed on the top of the ship deck 45, the bottom of the base frame 1 is fixedly connected with an insulating pad 2, both sides of the base frame 1 are fixedly connected with insulating fixed rods 3, one end of the insulating fixed rod 3 away from the base frame 1 is fixedly connected with a grounding connecting block 4, one side of the grounding connecting block 4 is fixedly connected with a coil 5, the other end of the coil 5 is fixedly connected with an upper end grounding block 6, the outside of the coil 5 is sleeved with an insulating support frame 7, the grounding connecting block 4 and the upper end grounding block 6 are fixedly connected with the insulating support frame 7, the top of the insulating support frame 7 is fixedly connected with an electric leakage display assembly, the bottom of the grounding connecting block 4 is slidingly connected with a current direction limiting assembly, the bottom of the current direction limiting assembly is slidingly connected with a lower end grounding block 15.

[0032] The ship electrical equipment insulation installation grounding device in the application can first fix the chassis 1 on the aluminum ship deck 45 in normal use, then fix the steel electrical equipment 44 on the chassis 1, and because the insulation pad 2 is used for insulation, the steel electrical equipment 44 and the aluminum ship deck 45 are in an insulated state, then the upper end grounding block 6 is connected with the steel electrical equipment 44 through bolts, and the lower end grounding block 15 is connected with the aluminum ship deck 45 through bolts, when the steel electrical equipment 44 leaks electricity, the current direction limiting assembly guides the current leaked from the electrical equipment 44 to the aluminum ship deck 45, and the current enters the earth through the water after entering the aluminum ship deck 45, so that electric shock accidents caused by touching the steel electrical equipment 44 by workers are avoided, and the current direction limiting assembly limits the current direction, so that the current cannot flow from the aluminum ship deck 45 to the steel electrical equipment 44, the loop between the steel electrical equipment 44 and the aluminum ship deck 45 cannot be formed, and the primary cell between the steel electrical equipment 44 and the aluminum ship deck 45 is prevented from being formed, so that the steel electrical equipment 44 is grounded, and the probability of electrochemical corrosion of the aluminum ship deck 45 or the steel electrical equipment 44 is reduced.

[0033] As a preferred technical solution of the application, the current direction limiting assembly comprises a left side insulation housing 10, a right side insulation housing 11, a grounding conductive block 12, a one-way conductive module 14 and an insertion block 16, the left side insulation housing 10 and the right side insulation housing 11 are hingedly connected with each other, the top and bottom of the inner side of the left side insulation housing 10 and the right side insulation housing 11 are fixedly connected with the grounding conductive block 12, a receiving groove 13 is left between the two grounding conductive blocks 12, the one-way conductive module 14 is placed in the receiving groove 13, the two ends of the one-way conductive module 14 abut against the grounding conductive block 12, the top and bottom of the left side insulation housing 10 and the right side insulation housing 11 are provided with the insertion block 16 fixedly connected with the grounding conductive block 12, and the bottom of the grounding connecting block 4 and the top of the lower end grounding block 15 are provided with the insertion groove 9 matched with the insertion block 16.

[0034] Specifically, in the normal working process, the two ends of the one-way conductive module 14 (the one-way conductive module 14 can be a one-way diode or a selenium rectifier stack, etc. having a forward conduction current and a reverse blocking characteristic) abut against the grounding conductive blocks 12 at the upper end and the lower end of the right side insulation housing 11, so that the current is prevented from flowing from the aluminum ship deck 45 to the steel electrical equipment 44, the aluminum ship deck 45 and the steel electrical equipment 44 form a loop, and a primary cell is formed, in addition, when the one-way conductive module 14 is broken down by the current, the left side insulation housing 10 and the right side insulation housing 11 only need to be opened to replace the one-way conductive module 14, and the replacement process is simpler, more convenient and easier to operate.

[0035] As a preferred technical scheme of the present application, the upper end and the lower end of the outer wall of the left side insulating shell 10 and the right side insulating shell 11 are both provided with a positioning groove 24, the inside of the positioning groove 24 is slidably connected with a positioning sliding block 27, the middle position of the positioning sliding block 27 is slidably connected with a positioning column 25, the two ends of the positioning column 25 are fixedly connected with the top and the bottom of the positioning groove 24 respectively, one end of the positioning column 25 close to the receiving groove 13 is sleeved with a positioning elastic piece 26, one end of the positioning elastic piece 26 is fixedly connected with the end of the positioning groove 24, the other end of the positioning elastic piece 26 is fixedly connected with the positioning sliding block 27, and the side of the positioning sliding block 27 away from the grounding conductive block 12 is fixedly connected with a positioning plate 28.

[0036] Specifically, when installing the current direction limiting assembly, the positioning plate 28 is first pushed towards the middle position of the current direction limiting assembly, so that the plug blocks 16 at both ends of the current direction limiting assembly are exposed, then the plug blocks 16 at both ends of the current direction limiting assembly are inserted into the plug slots 9 at the bottom of the grounding connecting block 4 and the top of the lower end grounding block 15 respectively, and then the positioning plate 28 is loosened. Under the pushing of the positioning elastic piece 26, the positioning plate 28 will move away from the middle position of the current direction limiting assembly, and then be sleeved outside the grounding connecting block 4 or the lower end grounding block 15, so as to limit and position the current direction limiting assembly, avoid the current direction limiting assembly from being separated from between the grounding connecting block 4 and the lower end grounding block 15, and cause the current direction limiting assembly to lose the grounding effect.

[0037] As a preferred technical scheme of the present application, the side of the left side insulating shell 10 is fixedly connected with a clamping block 23, the side close to the clamping block 23 of the right side insulating shell 11 is provided with a limiting groove 17, the inside of the limiting groove 17 is slidably connected with a limiting sliding block 20, the middle position of the limiting sliding block 20 is slidably connected with a limiting column 18, the two ends of the limiting column 18 are fixedly connected with the top and the bottom of the limiting groove 17 respectively, one end of the limiting column 18 away from the clamping block 23 is sleeved with a limiting elastic piece 19, one end of the limiting elastic piece 19 is fixedly connected with the end of the limiting groove 17, the other end of the limiting elastic piece 19 is fixedly connected with the limiting sliding block 20, the side of the limiting sliding block 20 away from the right side insulating shell 11 is fixedly connected with a hooking block 21, the hooking block 21 is matched with the clamping block 23, and the side of the hooking block 21 away from the limiting sliding block 20 is fixedly connected with a gripping block 22.

[0038] Specifically, before the left side insulation shell 10 and the right side insulation shell 11 are folded, the hooking block 21 can be pushed by the gripping block 22, so that the hooking block 21 is disengaged from the clamping block 23, thereby facilitating the folding of the left side insulation shell 10 and the right side insulation shell 11. After the left side insulation shell 10 and the right side insulation shell 11 are folded, the gripping block 22 is released, the limiting elastic element 19 loses the limitation and pushes the limiting sliding block 20 to move in the direction of the clamping block 23, and the limiting sliding block 20 in turn pushes the hooking block 21 to move in the direction of the clamping block 23, so that the hooking block 21 is hooked on the clamping block 23, thereby limiting the left side insulation shell 10 and the right side insulation shell 11. In this way, the left side insulation shell 10 and the right side insulation shell 11 can be folded more tightly, and the contact and conduction effect between the one-way conductive module 14 and the grounding conductive block 12 can be improved.

[0039] As a preferred technical solution of the present application, the leakage display assembly comprises a core 8, a display sleeve 29, a limiting block 31, a mounting plate 33, a reset elastic element 36 and a permanent magnet 37. The middle position of the coil 5 is provided with the core 8, the two ends of the core 8 are fixedly connected with the top and bottom of the inner side of the insulation support frame 7 respectively, the top of the insulation support frame 7 is fixedly connected with the display sleeve 29, the display sleeve 29 is located directly above the core 8, the top of the display sleeve 29 is fixedly connected with the limiting block 31, the top of the display sleeve 29 is provided with the mounting plate 33, the mounting plate 33 is provided with a mounting groove 34 matched with the limiting block 31, the bottom of the mounting plate 33 is fixedly connected with the reset elastic element 36, the bottom of the reset elastic element 36 is fixedly connected with the permanent magnet 37, and the middle position of the display sleeve 29 is provided with a display window 30.

[0040] As a preferred technical solution of the present application, the outer wall of the upper end of the permanent magnet 37 is fixedly connected with a leakage state indicating ring 38, and the outer wall of the lower end of the permanent magnet 37 is fixedly connected with a normal state indicating ring 39.

[0041] Specifically, if the steel electrical equipment 44 leaks, the current generated during the leakage will flow through the coil 5, and the current will generate a magnetic field when passing through the coil 5, thereby magnetizing the core 8. Since the magnetic poles of the upper end of the core 8 after magnetization are different from the magnetic poles of the lower end of the permanent magnet 37, the core 8 will attract the permanent magnet 37 to move downward, so that the leakage state indicating ring 38 is located at the position of the display window 30. The staff can determine whether the electrical equipment 44 has leaked by observing the indicating ring exposed by the permanent magnet 37 at the position of the display window 30.

[0042] As a preferred technical solution of the present application, the outer wall of the mounting plate 33 is fixedly connected with a rotating ring 41, the mounting plate 33 is externally sleeved with a threaded ring 40, the inner side of the upper end of the threaded ring 40 is provided with a rotating groove 42 matched with the rotating ring 41, the threaded ring 40 is threadedly connected with the display sleeve 29, and the outer wall of the threaded ring 40 is fixedly connected with a pushing block 43.

[0043] Specifically, when the elastic coefficient of the reset elastic member 36 changes during long-term use, causing the permanent magnet 37 to fail to return to the original position, the threaded ring 40 can be rotated by the knob 43, the threaded ring 40 is separated from the display sleeve 29, and then the reset elastic member 36 and the permanent magnet 37 are extracted from the display sleeve 29, so as to facilitate the maintenance or replacement of the reset elastic member 36.

[0044] As a preferred technical solution of the present application, the lower end of the inside of the display sleeve 29 is fixedly connected with the iron ring 32, the middle position of the mounting plate 33 is slidingly connected with the reset rod 35, and the lower end of the reset rod 35 penetrates through the mounting plate 33 and is fixedly connected with the permanent magnet 37.

[0045] Specifically, when the steel electrical equipment 44 leaks, the permanent magnet 37 is attracted by the iron core 8 and moves downward by a distance, and after the permanent magnet 37 moves by a distance, the permanent magnet 37 contacts the iron ring 32 and is adsorbed and fixed on the iron ring 32. Even if the electrical equipment 44 is intermittent leakage, the position of the permanent magnet 37 can indicate that the electrical equipment 44 has leaked during the two maintenance processes, so that the maintenance personnel can make a judgment on the state of the electrical equipment 44.

[0046] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application.

Claims

1. A grounding device for insulating marine electrical equipment, comprising a base frame (1) mounted on top of the ship's deck (45), characterized in that, An insulating pad (2) is fixed to the bottom of the base frame (1). An insulating fixing rod (3) is fixed to both sides of the base frame (1). A grounding connection block (4) is fixed to one end of the insulating fixing rod (3) away from the base frame (1). A coil (5) is fixed to one side of the grounding connection block (4). An upper grounding block (6) is fixed to the other end of the coil (5). An insulating support frame (7) is sleeved on the outside of the coil (5). The grounding connection block (4) and the upper grounding block (6) are both fixed to the insulating support frame (7). A leakage current display component is fixed to the top of the insulating support frame (7). A current direction limiting component is slidably connected to the bottom of the grounding connection block (4). A lower grounding block (15) is slidably connected to the bottom of the current direction limiting component. The current direction limiting component includes a left insulating shell (10), a right insulating shell (11), a grounding conductive block (12), a unidirectional conductive module (14), and a plug (16). The left insulating shell (10) and the right insulating shell (11) are hinged to each other. The top and bottom of the left insulating shell (10) and the right insulating shell (11) are fixedly connected to the grounding conductive block (12). A storage groove (13) is left between the two grounding conductive blocks (12). The unidirectional conductive module (14) is placed inside the storage groove (13). Both ends of the unidirectional conductive module (14) abut against the grounding conductive block (12). The top and bottom of the left insulating shell (10) and the right insulating shell (11) are provided with plugs (16) fixedly connected to the grounding conductive block (12). The bottom of the grounding connection block (4) and the top of the lower grounding block (15) are provided with slots (9) that match the plugs (16). The leakage current display assembly includes an iron core (8), a display sleeve (29), a limiting block (31), a mounting plate (33), a reset elastic element (36), and a permanent magnet (37). The coil (5) has an iron core (8) in the middle. The two ends of the iron core (8) are fixed to the top and bottom of the inner side of the insulating support frame (7), respectively. The top of the insulating support frame (7) is fixed to the display sleeve (29). The display sleeve (29) is located directly above the iron core (8). The top of the display sleeve (29) is fixed to the limiting block (31). The top of the display sleeve (29) is provided with a mounting plate (33). The mounting plate (33) has a mounting groove (34) that matches the limiting block (31). The bottom of the mounting plate (33) is fixed to the reset elastic element (36). The bottom of the reset elastic element (36) is fixed to the permanent magnet (37). The display sleeve (29) has a display window (30) in the middle.

2. The marine electrical equipment insulation installation grounding device according to claim 1, characterized in that, Positioning grooves (24) are provided at the upper and lower ends of the outer walls of the left insulating shell (10) and the right insulating shell (11). A positioning slider (27) is slidably connected inside the positioning groove (24). A positioning post (25) is slidably connected at the middle position of the positioning slider (27). The two ends of the positioning post (25) are fixed to the top and bottom of the positioning groove (24) respectively. A positioning elastic element (26) is sleeved on the end of the positioning post (25) near the receiving groove (13). One end of the positioning elastic element (26) is fixed to the end of the positioning groove (24). The other end of the positioning elastic element (26) is fixed to the positioning slider (27). A positioning plate (28) is fixed on the side of the positioning slider (27) away from the grounding conductive block (12).

3. The marine electrical equipment insulation installation grounding device according to claim 1, characterized in that, A locking block (23) is fixedly connected to one side of the left insulating shell (10). A limiting groove (17) is formed on the side of the right insulating shell (11) near the locking block (23). A limiting slider (20) is slidably connected inside the limiting groove (17). A limiting post (18) is slidably connected to the middle position of the limiting slider (20). The two ends of the limiting post (18) are fixedly connected to the top and bottom of the limiting groove (17) respectively. The limiting post (18) is away from the locking block (23). One end of the device is fitted with a limiting elastic element (19), one end of the limiting elastic element (19) is fixedly connected to the end of the limiting groove (17), the other end of the limiting elastic element (19) is fixedly connected to the limiting slider (20), the side of the limiting slider (20) away from the right insulating shell (11) is fixedly connected with a hook block (21), the hook block (21) matches the card block (23), and the side of the hook block (21) away from the limiting slider (20) is fixedly connected with a gripping block (22).

4. A grounding device for insulation installation of marine electrical equipment according to claim 1, characterized in that, A leakage current indicator ring (38) is fixed to the outer wall of the upper end of the permanent magnet (37), and a normal state indicator ring (39) is fixed to the outer wall of the lower end of the permanent magnet (37).

5. A grounding device for insulation installation of marine electrical equipment according to claim 1, characterized in that, A rotating ring (41) is fixed to the outer wall of the mounting plate (33), and a threaded ring (40) is sleeved on the outside of the mounting plate (33). A rotating groove (42) matching the rotating ring (41) is opened at the upper end of the inner side of the threaded ring (40). The threaded ring (40) is threadedly connected to the display sleeve (29), and a toggle block (43) is fixed to the outer wall of the threaded ring (40).

6. A grounding device for insulation installation of marine electrical equipment according to claim 1, characterized in that, An iron ring (32) is fixedly connected to the lower end of the inner side of the display sleeve (29), and a reset rod (35) is slidably connected to the middle position of the mounting plate (33). The lower end of the reset rod (35) passes through the mounting plate (33) and is fixedly connected to the permanent magnet (37).

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