CN212861812U

CN212861812U - Ship leakage blocking device

Info

Publication number: CN212861812U
Application number: CN202021564333.4U
Authority: CN
Inventors: 卢云胜
Original assignee: Hubei Chengcheng Zhongan Technology Consulting Co Ltd
Current assignee: Hubei Chengcheng Zhongan Technology Consulting Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-04-02
Anticipated expiration: 2030-07-31

Abstract

The utility model provides a ship plugging device, which comprises a nail shooting device, wherein the nail shooting device is used for being connected with a plugging member so as to plug a crevasse on a ship board; the structure of the nail shooting device is as follows: one end in the cylinder body is provided with an axially sliding nail shooting cavity, the middle part of the cylinder body is provided with an electric arc emitter, the other end in the cylinder body is provided with a nail shooting cavity for accommodating a nail with nail shooting medicine, and the position of the electric arc emitter is communicated with the nail shooting cavity; still be equipped with spacing chamber at the length scope that arouses the needle, arouse needle and stopper fixed connection, the stopper is located spacing intracavity to by spacing chamber restriction axial displacement position, spacing intracavity still is equipped with the spring, the spring is used for withstanding the stopper, the elasticity that makes the end of arousing the needle overcome the spring just can arouse arc emitter. The leak-stopping plate and the ship plate can be connected into a whole fast by adopting the nail shooting device, and the crevasses on the ship plate are blocked. Thereby gaining time for subsequent semi-permanent repairs.

Description

Ship leakage blocking device

Technical Field

The utility model relates to a boats and ships leaking stoppage field, especially a boats and ships leaking stoppage device.

Background

In the sailing process of the ship, leakage can be caused due to collision or attack, and how to realize quick leakage stoppage has more technical difficulties. Although the existing scheme of adopting the rubber block to stop the leakage is not stable enough, the rubber block is easy to fall off.

A flexible rapid emergency plugging method disclosed in Chinese patent document CN110844015A, which comprises the steps of manufacturing a plugging bag, and preparing a plugging gun and a plugging agent; sleeving a plugging gun rod into the plugging bag and sending the plugging gun rod and the plugging gun rod to one side of a leak of the ship plate; injecting a plugging agent into the plugging bag; and fourthly, expanding the leakage plugging bag after the leakage plugging agent expands, so that the leakage plugging agent and the leakage plugging bag fully expand the leakage and then do not leak water, namely completing the leakage plugging. The utility model discloses a leaking stoppage method adopts flexible material or umbelliform special flexible material as the leaking stoppage bag, and the foaming agent is filled to leaking stoppage bag the inside, and the foaming agent volume can expand the grow rapidly, solidifies the setting fast to reach the purpose of leaking stoppage. However, the diameter of the leakage plugging bag needs to be larger than that of the leak, the two ends of the leakage plugging bag in the leak are enlarged and the middle of the leakage plugging bag is small during filling, and the purpose of fixing and plugging is achieved, so that the leak can be quickly plugged in a short time. However, the leakage blocking bag of the scheme is positioned outside the ship body, navigation is easily affected, and the scheme is not beneficial to subsequent blocking construction. Chinese patent document CN111098992A describes a plugging scheme of a plugging umbrella for an underwater hole-breaking opening of a cabin and a using method thereof, which can realize quick plugging, but due to the existence of an umbrella rib structure, the joint sealing performance of the inner wall of the umbrella cover and the outer side of a ship board is poor, water is easy to continue to permeate, and the subsequent plugging construction is influenced. Chinese patent document CN110641645A

A ship leaking stoppage device with high sealing performance records a scheme of adopting a sucker structure for plugging, but the device is complex in structure, large in size and not suitable for plugging large crevasses.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a boats and ships plugging device is provided, the breach of shutoff ship board that can make things convenient for quick, in the preferred scheme, cooperation leaking stoppage umbrella plugging device's structure can further improve the shutoff effect.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a ship plugging device comprises a nail shooting device, a nail pushing device and a plugging device, wherein the nail shooting device is used for being connected with a plugging member to plug a crevasse on a ship board;

the structure of the nail shooting device is as follows: one end in the cylinder body is provided with an axially sliding nail shooting cavity, the middle part of the cylinder body is provided with an electric arc emitter, the other end in the cylinder body is provided with a nail shooting cavity for accommodating a nail with nail shooting medicine, and the position of the electric arc emitter is communicated with the nail shooting cavity;

still be equipped with spacing chamber at the length scope that arouses the needle, arouse needle and stopper fixed connection, the stopper is located spacing intracavity to by spacing chamber restriction axial displacement position, spacing intracavity still is equipped with the spring, the spring is used for withstanding the stopper, the elasticity that makes the end of arousing the needle overcome the spring just can arouse arc emitter.

In the preferred scheme, an excitation needle seat is arranged at the end of the excitation needle far away from the electric arc emitter, the excitation needle seat is of an expanding structure, and the diameter of the excitation needle seat is larger than that of the excitation needle penetrating through a hole in the cylinder;

a safety gasket is arranged between the excitation needle seat and the end face of the barrel body, and an opening part is arranged on the safety gasket so as to be taken out from the space between the excitation needle seat and the end face of the barrel body.

In the preferred scheme, the two sides of the opening part are provided with the lug plates, the safety pin is arranged between the lug plates and used for limiting the safety gasket to be mistakenly withdrawn between the excitation needle seat and the end face of the cylinder body.

In a preferable scheme, a pull ring is further arranged on the safety gasket, and the pull ring is located on one side far away from the opening part and used for pulling the safety gasket out from a position between the excitation needle seat and the end face of the barrel body when in use.

In the preferred scheme, the structure of penetrating the nail do, the one end of penetrating the nail is equipped with penetrates the pin fin, the end that penetrates the pin fin is equipped with penetrates the nail point, the other end that penetrates the nail is equipped with the nail seat, the nail seat becomes the boss shape, the bottom diameter of nail seat is great, the top diameter is less, the great part of nail seat diameter is located outside penetrating the nail chamber, the less part of nail seat diameter is located penetrates the nail chamber, the top of nail seat still with penetrate nail medicine fixed connection, penetrate the nail medicine and be located and penetrate the nail chamber.

In a preferable scheme, the middle part of the shooting nail is provided with a shooting nail body with the diameter smaller than that of the shooting head, a deformation sleeve with the diameter not larger than that of the shooting head is coated outside the shooting nail body, and the outer wall of the shooting nail body is provided with a swelling part so as to push the deformation sleeve to swell after the shooting nail is shot in.

In a preferred scheme, a gap is formed between the upper end face of the deformation sleeve and the lower end face of the nail seat, and the upper end face of the deformation sleeve is also provided with a diameter-expanding flange structure so as to push the deformation sleeve to slide towards the nail seat after the shooting nail is shot.

In a preferred embodiment, the deformation sleeve is made of aluminum, lead, tin, copper or an alloy containing one or more of the above elements.

In a preferred scheme, the device further comprises an occlusion device, and the structure of the occlusion device is as follows: one end of the main rod is hinged with a plurality of support rods, the support rods are distributed along the circumference of the main rod, plugging fabrics are fixedly arranged on the inner sides of the support rods, and the plugging fabrics and the support rods form an umbrella-shaped structure;

an end cover is arranged at the end hinged with the support rod, and the end cover and the plugging fabric form sealing.

In the preferred scheme, still be equipped with the toper slider, toper slider and mobile jib sliding connection, the one end of toper slider towards the bracing piece is the toper for make the bracing piece that is pressed strut.

A leakage stopping method adopting the ship leakage stopping device comprises the following steps:

s1, when the ship board has a crevasse, covering the crevasse with the leakage blocking board to ensure that the leakage blocking board and the ship board at the edge of the crevasse have enough overlapping parts;

s2, penetrating a nail into the edge of the leakage-blocking plate and the ship board by a nail-shooting device, and blocking the leakage-blocking plate on the crevasse;

the quick plugging of the ship plate crevasses is realized through the steps.

The utility model provides a boats and ships plugging device and method can be connected the leak stoppage board as an organic whole with the deck fast through adopting to penetrate the nail device, the broken mouth on the shutoff deck. The nail shooting device adopts a structure of the deformation sleeve, and can automatically expand and deform after passing through the boat plate and the leak-stopping plate, so that the leak-stopping plate and the boat plate are connected into a whole. In the preferred scheme, the plugging device who adopts, can be faster from the hawk outside shutoff breach to win the time for follow-up semi-permanent restoration.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 shows the plugging structure of the present invention.

Fig. 2 is a schematic structural view of the plugging device of the present invention when not in use.

Fig. 3 is a schematic structural view of the utility model when the plugging is opened.

Fig. 4 is a schematic structural view of the nail shooting device of the present invention.

Fig. 5 is a schematic structural diagram of the safety gasket of the present invention.

Fig. 6 is a schematic structural view of the nail shooting device of the present invention in use.

In the figure: the device comprises a ship board 1, a ribbed plate 2, a leak-stopping plate 3, a stiffening plate 4, a plugging device 5, an end cover 51, a main rod 52, a conical sliding block 53, a handle 54, a sliding block handle 55, plugging fabric 56, a supporting rod 57, a nail shooting device 6, a cylinder 601, a spring 60, an excitation needle base 61, a safety gasket 62, a safety pin 621, an opening 622, an ear plate 623, a pull ring ear plate 624, a pull ring 625, a limiting block 63, an arc emitter 64, a striker sliding hole 65, a limiting cavity 66, an arc emission cavity 67, a nail emission cavity 68, an excitation needle 69, a nail shooting 7, a nail shooting medicine 71, a nail shooting body 72, a nail base 721, a deformation sleeve 722, a nail shooting rod 723, a nail shooting head 724, a nail shooting tip 725, an expanding part 726, a limiting part 727 and a fixing rope 8.

Detailed Description

Example 1:

as shown in fig. 1 and 6, the ship plugging device comprises a nail shooting device 6, wherein the nail shooting device 6 is used for being connected with a plugging component so as to plug a crevasse on a ship board 1;

the structure of the nail shooting device 6 is as follows: one end in the cylinder body 601 is provided with a nail shooting cavity 68 capable of axially sliding, the middle part of the cylinder body 601 is provided with an electric arc emitter 64, the other end in the cylinder body 601 is provided with the nail shooting cavity 68 and used for accommodating a nail 7 with nail shooting medicine 71, and the position of the electric arc emitter 64 is communicated with the nail shooting cavity 68; for example, chinese patent document CN 109096018A describes a nail cartridge for an electric arc nail gun, a method for producing the same, and an electric arc nail gun, wherein the nail cartridge comprises 1 part of potassium perchlorate or potassium hypochlorite or potassium chlorate, 0.1 to 1 part of starch as a combustion agent, and 0.05 to 1 part of water. The arc emitter 64 is a mechanically energized arc emitter 64 similar to those found in lighters. This can greatly improve safety. But also can improve the moisture resistance.

The cylinder 601 of the nail shooting device 6 is made of quenched hard alloy steel, and has the effects of corrosion resistance, rust resistance and high strength.

A limit cavity 66 is further arranged in the length range of the excitation needle 69, the excitation needle 69 is fixedly connected with a limit block 63, the limit block 63 is located in the limit cavity 66 and is limited in axial moving position by the limit cavity 66, a spring 60 is further arranged in the limit cavity 66, the spring 60 is used for propping against the limit block 63, and the end head of the excitation needle 69 can overcome the elastic force of the spring 60 to excite the arc emitter 64. With the structure, when in use, the leak-stopping plate 3 is covered on the crevasse, and the leak-stopping plate 3 and the ship plate 1 are connected into a whole along the edge of the leak-stopping plate 3 by the nail shooting device 6, thereby reliably plugging the crevasse. The limiting cavity 66 is arranged for limiting the operation stroke of the excitation needle 69, the cylinder 601 in the embodiment adopts a two-section connecting structure, the position of the cylinder 601 in the limiting cavity 66 is divided into two sections, and the two sections are connected through threads so as to be convenient to process and install. The limiting cavity 66 also has the function that when the nail shooting pill 71 is excited, the limiting block 63 and the limiting cavity 66 can form a seal, so that the gas thrust formed by the nail shooting pill 71 is completely acted on the nail 7. The firing pin 69 is an austempering firing pin.

In a preferred scheme, as shown in fig. 1 and 6, an excitation needle seat 61 is arranged at the end of the excitation needle 69 far away from the arc emitter 64, the excitation needle seat 61 is of an expanding structure, and the diameter of the excitation needle seat 61 is larger than that of the excitation needle 69 penetrating through a hole in the cylinder 601;

a safety gasket 62 is arranged between the excitation needle seat 61 and the end surface of the cylinder 601, and an opening 622 is arranged on the safety gasket 62 so as to be convenient to take out from the space between the excitation needle seat 61 and the end surface of the cylinder 601. By adopting the structure of the safety gasket 62, the safety is better, and the excitation needle seat 61 is not required to be punched, so that the processing difficulty is reduced, and the manufacturing efficiency is improved.

Preferably, as shown in fig. 4 and 5, the two sides of the opening 622 are provided with ear plates 623, and a safety pin 621 is arranged between the ear plates 623, wherein the safety pin 621 is used for limiting the safety gasket 62 from being accidentally withdrawn between the excitation needle seat 61 and the end surface of the cylinder 601. Preferably, the safety pin 621 adopts a point-breaking structure, so that the safety pin 621 is directly broken when in use, thereby pulling out the safety pad 62.

Preferably, as shown in fig. 4 and 5, the safety washer 62 is further provided with a pull ring 625, and the pull ring 625 is located on a side away from the opening 622 for pulling the safety washer 62 out from between the trigger needle holder 61 and the end face of the barrel 601 in use.

The preferable scheme is as shown in fig. 4, the structure of the nail 7 is that one end of the nail 7 is provided with a nail head 724, the end head of the nail head 724 is provided with a nail shooting tip 725, the other end of the nail 7 is provided with a nail seat 721, the nail seat 721 is in a boss shape, the bottom diameter of the nail seat 721 is larger, the top diameter is smaller, the part with the larger diameter of the nail seat 721 is positioned outside the nail shooting cavity 68, the part with the smaller diameter of the nail seat 721 is positioned inside the nail shooting cavity 68, the top end of the nail seat 721 is fixedly connected with the nail shooting medicine 71, and the nail shooting medicine 71 is positioned inside the nail shooting cavity 68. In a preferred embodiment, the outer surface of the nail head 724 is coated with a flexible metal material, such as red copper or pure aluminum or lead-tin alloy, so that the scheme 1 is to increase the electrical conductivity and avoid generating electric sparks, and the scheme 2 is to avoid generating sparks due to collision and causing fire by the deformation of the flexible metal material. This scheme can be used for the urgent repair in oil drum or oil storage storehouse.

In a preferred scheme, as shown in fig. 6, a nail shooting body 72 with a diameter smaller than that of a nail shooting head 724 is arranged in the middle of the nail shooting 7, a deformation sleeve 722 with a diameter not larger than that of the nail shooting head 724 is coated outside the nail shooting body 72, and an expanded part 726 is arranged on the outer wall of the nail shooting body 72 so as to push the deformation sleeve 722 to expand after the nail shooting 7 is shot.

Preferably, as shown in fig. 6, a gap is provided between the upper end surface of the deformation sleeve 722 and the lower end surface of the nail seat 721, and the upper end surface of the deformation sleeve 722 is further provided with a stopper 727 formed by a flange structure with an enlarged diameter, so as to push the deformation sleeve 722 to slide in the direction of the nail seat 721 after the nail 7 is shot.

In a preferred embodiment, the deformation sleeve 722 is made of aluminum, lead, tin, copper, or an alloy containing one or more of the foregoing elements. With the above structure, after the shooting nail 7 is shot into the plugging plate 3 and the boat deck 1, the limiting portion 727 is limited by the plugging plate 3, and under the inertia effect, the shooting nail rod 723 continues to advance, and the expanding portion 726 extrudes the inner wall of the deformation sleeve 722, so that the end of the deformation sleeve 722 deforms and expands, the hole of the boat deck 1 is sealed, and the limiting is formed. The principle is similar to an expansion bolt.

The nail-shooting device 6 is connected with the extension bar to ensure safety, preferably, the extension bar is in multiple sections, and the sections are connected through threads. The extension bar is sleeved with an excitation rod, the excitation rod is also designed in multiple sections, and the sections are connected through threads and used for driving the excitation needle 69.

Further preferably, the front end of the shooting nail 7 can be provided with a hammer body structure for knocking and flattening deformed edges and burrs of the ship board 1.

Further preferably, the outer wall of the nail-shooting head 724 is provided with texture to improve friction force and thus pull-out resistance.

Further preferably, the shooting nail 7 is connected with the pressing sheet, the pressing sheet can be arranged in a Z shape, according to the scheme, the shooting nail 7 and the pressing sheet are connected with the ship plate 1 to fix the pressing sheet, and then the pressing sheet compresses and fixes the leakage plugging plate 3.

A preferred embodiment is shown in fig. 2 and 3, further comprising an occlusion device 5, which is configured as follows: one end of the main rod 52 is hinged with a plurality of support rods 57, the plurality of support rods 57 are distributed along the circumference of the main rod 52, plugging fabrics 56 are fixedly arranged on the inner sides of the support rods 57, and the plugging fabrics 56 and the support rods 57 form an umbrella-shaped structure; the innovation in this example is that a blocking fabric 56, such as a waterproof blanket, is placed inside the support rods 57. With this structure, the plugging fabric 56 can be closely attached to the outer wall of the boat deck 1, thereby improving the plugging effect and facilitating the subsequent repair operation. For example, the lacerations are filled with sealing compound.

An end cap 51 is further arranged at the end hinged with the support rod 57, and the end cap 51 and the plugging fabric 56 form sealing; the end cap 51 closes the hole formed by the plugging fabric 56 through the primary stem 52.

The tapered slide block 53 is further arranged, the tapered slide block 53 is connected with the main rod 52 in a sliding mode, and one end, facing the support rod 57, of the tapered slide block 53 is tapered and used for enabling the pressed support rod 57 to be opened.

Example 2:

as shown in fig. 1, a leakage stoppage method using the ship leakage stoppage device includes the following steps:

s1, when the ship board 1 has a crevasse, covering the crevasse with the leakage blocking board 3 to ensure that the leakage blocking board 3 and the ship board 1 at the edge of the crevasse have enough overlapped parts; an annular sealing gasket is arranged between the leakage blocking plate 3 and the ship plate 1, and the annular sealing gasket is positioned at the periphery of the crevasse. The annular sealing gasket is made of annular rubber. The leakage blocking plate 3 needs to be set to a certain radian, which is approximately the same as the radian of the ship plate 1, and the error part is compensated by the deformation of the annular sealing gasket through the leakage blocking plate.

S2, penetrating the shooting nail 7 through the edge of the leakage-blocking plate 3 and the ship board 1 by the shooting nail device 6, and blocking the leakage-blocking plate 3 on the crevasse;

the quick plugging of the crevasses of the ship plate 1 is realized through the steps. The scheme is used for the situation that the edge of the crevasse is not deformed and the size of the crevasse is small.

In the preferred scheme, the drain pipe is arranged on the leakage blocking plate 3, the valve is arranged on the drain pipe, the valve is opened in the blocking construction process so as to reduce the pressure during blocking, and the valve is closed after the blocking construction is finished.

Example 3:

for the situation that the size of the crevasse is large, the plugging device 5 extends out of the crevasse, the slider handle 55 pushes the conical slider 53 to open the support rod 57, and when the opening exceeds the range of the crevasse, the crevasse can be plugged under the hydraulic pressure;

and (3) after flowing water is reduced, repairing the deformed crevasses by using a metal plate, plugging the crevasses by using polymer plugging glue, and preferably adopting thermosetting plugging glue to improve the plugging speed. In the plugging process, the main rod 52 of the plugging device 5 is detached, the formed hole is leveled, and an annular sealing gasket is arranged and positioned at the periphery of the crevasse. With the scheme of embodiment 2, place leak stoppage board 3 in the breach department to shoot nail device 6 and will shoot nail 7 and pierce through the edge and the hawk 1 of leak stoppage board 3, block leak stoppage board 3 on the breach, realize the quick shutoff of hawk 1 breach through above step. This solution is used in case of a deformed crevasse edge. By adopting the scheme, the navigation for a longer time can be realized. And the operation is carried out until the port maintenance is carried out.

Under the working condition that the plugging device 5 is lacked, the cross beam with the length exceeding the crevasse can be used for replacing the plugging device 5, the cross beam is bound and connected with the plugging blanket and then extends out of the crevasse, and the cross beam is fixed in the cabin by a pull rope after the plugging blanket is unfolded, so that temporary plugging is realized. Then the subsequent plugging construction is carried out by using the polymer plugging glue and the plugging plate 3.

Example 4:

at the position of the crevasse, two ends of the stiffening plate 4 are connected with the ribbed slab 2 through the nail shooting device 6, and then the stiffening plate 4 is used as a fixed foundation to be plugged by adopting the scheme of the embodiment 1-3. For example, the closure plate 3 and the sealing gasket are placed directly between the stiffening plate 4 and the ship plate 1, the closure plate 3 is closed with a wood wedge and then connected with the nailing device 6. Or firstly extending the plugging device 5, after the plugging is opened, fixedly connecting the handle 54 with the stiffening plate 4 through the fixing rope 8, and then plugging according to the scheme of the embodiment 3. By adopting the scheme of the embodiment, the crevasses with a large range can be repaired.

Example 5:

the pipeline is broken, the hoop can be used for plugging so as to connect the end of the hoop with the shooting nail 7, and an annular sealing gasket is arranged between the hoop and the broken opening of the pipeline.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. The utility model provides a boats and ships plugging device which characterized in that: the device comprises a nail shooting device (6), wherein the nail shooting device (6) is used for being connected with a leakage blocking component so as to block a crevasse on a ship board (1);

the structure of the nail shooting device (6) is as follows: one end in the cylinder body (601) is provided with a nail shooting cavity (68) capable of axially sliding, the middle part of the cylinder body (601) is provided with an electric arc emitter (64), the other end in the cylinder body (601) is provided with a nail shooting cavity (68) for accommodating a nail (7) with a nail shooting medicine (71), and the position of the electric arc emitter (64) is communicated with the nail shooting cavity (68);

the length range of the exciting needle (69) is further provided with a limiting cavity (66), the exciting needle (69) is fixedly connected with the limiting block (63), the limiting block (63) is located in the limiting cavity (66) and is limited in axial movement position by the limiting cavity (66), a spring (60) is further arranged in the limiting cavity (66), the spring (60) is used for propping against the limiting block (63), and the end head of the exciting needle (69) overcomes the elastic force of the spring (60) to excite the arc emitter (64).

2. A ship lost circulation device according to claim 1, characterized in that: an excitation needle seat (61) is arranged at the end of the excitation needle (69) far away from the arc emitter (64), the excitation needle seat (61) is of an expanding structure, and the diameter of the excitation needle seat (61) is larger than that of a hole formed in the cylinder (601) through which the excitation needle (69) penetrates;

a safety gasket (62) is arranged between the excitation needle seat (61) and the end face of the barrel body (601), and an opening part (622) is arranged on the safety gasket (62) so as to be taken out from the space between the excitation needle seat (61) and the end face of the barrel body (601).

3. A ship lost circulation device according to claim 2, characterized in that: ear plates (623) are arranged on two sides of the opening part (622), a safety pin (621) is arranged between the ear plates (623), and the safety pin (621) is used for limiting the safety gasket (62) from being withdrawn from the position between the excitation needle seat (61) and the end surface of the cylinder body (601) by mistake.

4. A ship lost circulation device according to claim 3, characterized in that: the safety gasket (62) is also provided with a pull ring (625), and the pull ring (625) is positioned on one side far away from the opening part (622) and used for pulling the safety gasket (62) out from between the excitation needle seat (61) and the end surface of the cylinder body (601) when in use.

5. A ship lost circulation device according to claim 1, characterized in that: penetrate structure of nail (7) do, penetrate one end of nail (7) and be equipped with and penetrate nailhead (724), penetrate the end of nailhead (724) and be equipped with and penetrate nail point (725), penetrate the other end of nail (7) and be equipped with nail seat (721), nail seat (721) become the boss shape, the bottom diameter of nail seat (721) is great, the top diameter is less, the great part of nail seat (721) diameter is located outside penetrating nail chamber (68), the less part of nail seat (721) diameter is located penetrate nail chamber (68), the top of nail seat (721) still with penetrate nail medicine (71) fixed connection, penetrate nail medicine (71) and be located and penetrate nail chamber (68).

6. A ship plugging device according to claim 5, which is characterized in that: the middle part of the shooting nail (7) is provided with a shooting nail body (72) with the diameter smaller than that of the shooting head (724), the outside of the shooting nail body (72) is coated with a deformation sleeve (722) with the diameter not larger than that of the shooting head (724), and the outer wall of the shooting nail body (72) is provided with an expansion part (726) so as to push the deformation sleeve (722) to expand after the shooting nail (7) is shot.

7. The ship plugging device of claim 6, wherein: a gap is arranged between the upper end face of the deformation sleeve (722) and the lower end face of the nail seat (721), and the upper end face of the deformation sleeve (722) is also provided with a diameter-expanding flange structure so as to push the deformation sleeve (722) to slide towards the nail seat (721) after the shooting nail (7) is shot.

8. A ship lost circulation device according to claim 1, characterized in that: still include plugging device (5), its structure is: one end of the main rod (52) is hinged with a plurality of support rods (57), the support rods (57) are distributed along the circumference of the main rod (52), plugging fabrics (56) are fixedly arranged on the inner sides of the support rods (57), and the plugging fabrics (56) and the support rods (57) form an umbrella-shaped structure;

an end cap (51) is further arranged at the end hinged with the support rod (57), and the end cap (51) and the plugging fabric (56) form sealing.

9. A ship lost circulation device according to claim 8, wherein: the device is also provided with a conical sliding block (53), the conical sliding block (53) is connected with the main rod (52) in a sliding manner, and one end, facing the supporting rod (57), of the conical sliding block (53) is conical and used for expanding the pressed supporting rod (57).