CN109823489B - Water sac type plugging plug for ship - Google Patents
Water sac type plugging plug for ship Download PDFInfo
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- CN109823489B CN109823489B CN201910186629.2A CN201910186629A CN109823489B CN 109823489 B CN109823489 B CN 109823489B CN 201910186629 A CN201910186629 A CN 201910186629A CN 109823489 B CN109823489 B CN 109823489B
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- bag body
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- tail end
- valve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 230000008093 supporting effect Effects 0.000 claims abstract description 43
- 230000007246 mechanism Effects 0.000 claims abstract description 15
- 239000002775 capsule Substances 0.000 claims description 22
- 230000000903 blocking effect Effects 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The invention discloses a marine water bag type plugging plug which comprises a contractible bag body, wherein two ends of the bag body are communicated, and two ends of the bag body are provided with through holes; the through hole at the head end of the bag body is hinged with a conical valve body, the head end of the valve body is in an opening shape, an adjusting mechanism for closing the opening shape is arranged in the valve body, the tail end of the valve body is provided with a front supporting rod, and the tail end of the valve body is provided with a water inlet hole; the utility model discloses a bag body, including the support rod, the support rod is in the inside of bag body, the support rod is equipped with the support plate that is used for the shutoff behind the support rod, the support rod is equipped with the shutoff behind the support rod the slider that is prismatic platform shape of support rod tail end through-hole, the slider sets up inside the bag body, the center of back support rod all sets up to the tail end the outside of bag body. The purposes of reducing the operation difficulty, realizing quick plugging and improving the safety coefficient of ships and shipmen are achieved.
Description
Technical Field
The invention relates to the field of marine plugging application, in particular to a marine water bag type plugging plug.
Background
With the development of shipping industry, the navigation density is increased, the environments where ships are sailed, moored and operated are complex and changeable, the probability of water inlet accidents caused by ship damage due to collision, stranding and reef contact of the ships is also increased, and the ship damage accidents are frequent. The ship body damage reduces the stability of the ship, reduces the reserve buoyancy, brings great harm to the ship, and directly threatens the safety of the ship and personnel on the ship.
When the hull is damaged and water enters, the leakage blocking and water draining are the primary tasks. At present, the ships are equipped with plugging devices, and the plugging devices are commonly plugged by facing water flow from the inner side of the ship body, and the plugging devices are relatively large in impact to the water flow, so that the personnel operation difficulty is high, the fixing operation time of the plugging devices is long, and the operation is difficult, so that the plugging process cannot be performed rapidly, timely and effectively.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
In order to solve the technical problems, the invention provides a marine water bag type plugging plug, so as to achieve the purposes of reducing operation difficulty, realizing quick plugging and improving safety coefficients of ships and personnel on the ships.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the marine water bag type plugging plug comprises a contractible bag body, wherein two ends of the bag body are communicated, and two ends of the bag body are provided with through holes;
the through hole at the head end of the bag body is hinged with a conical valve body, the head end of the valve body is in an opening shape, an adjusting mechanism for closing the opening shape is arranged in the valve body, the bottom end of the valve body is hinged with the head end of the bag body, the tail end of the valve body is provided with a front supporting rod, and the tail end of the valve body is provided with a water inlet hole;
the through hole of the tail end of the bag body is connected with a rear supporting rod, the head end of the rear supporting rod penetrates through the tail end through hole of the bag body and is arranged in the bag body, the side wall of the head end of the rear supporting rod is also provided with a pressure bearing plate for blocking the water inlet hole, the rear supporting rod is also provided with a prismatic-table-shaped sliding block for blocking the tail end through hole of the bag body, the sliding block is arranged in the bag body, and the center to the tail end of the rear supporting rod are all arranged outside the bag body.
According to the invention, the inner space of the capsule body is regulated by utilizing the front support rod and the rear support rod, the impact force of water flow at the valve body and the ship hole is utilized to enable the water flow to enter the capsule body and gradually prop open the capsule body, and the ship hole is plugged by matching with the sliding block, so that the purposes of reducing the operation difficulty, realizing quick plugging and improving the safety coefficient of the ship and personnel on the ship are achieved.
Preferably, the capsule body comprises a rubber capsule wall, a front mounting circular ring, a rear mounting circular ring, six front brackets hinged with the front mounting circular ring and six rear brackets hinged with the rear mounting circular ring, wherein the front brackets and the rear brackets are in one-to-one correspondence and are hinged, and the rubber capsule wall is connected between the adjacent front brackets and the adjacent rear brackets.
Preferably, the opening of the valve body is provided with an adjusting nut, the adjusting mechanism comprises a sleeve rod which is arranged inside the valve body and is hollow, a valve rod is arranged in the sleeve rod, the head end of the valve rod is provided with a valve core for blocking the adjusting nut, the sleeve rod is sleeved with a spring, the top of the spring is arranged at the bottom of the valve core, and in a natural state, the valve core props against the adjusting nut under the action of the spring to realize sealing, and under the action of pressure, the valve core and the valve rod can move into the sleeve rod. The valve rod, the loop bar and the spring are utilized to realize the adjustment of the valve core, and the nut is freely adjusted to seal under the action of the water pressure inside and outside the valve body.
Preferably, the head end of the rear supporting rod is provided with a long slot, the tail end of the front supporting rod is provided with a cross beam which is a solid cylinder, the cross beam is arranged in the slot, and the cross beam can move along the slot. The moving distance of the sliding block is limited by the slotted hole and the cross beam, so that the damage of the sliding block to the end part of the bag body under the condition of excessive force is avoided, and the service life of the equipment is prolonged.
Preferably, a sleeve is arranged at the through hole of the tail end of the bag body, the rear mounting circular ring is sleeved on the outer side wall of the sleeve and fixedly connected with the sleeve, a through hole for the tail end of the rear supporting rod to pass through is arranged on the sleeve, and rubber sheets are arranged at the bottom of the sleeve and the upper surface of the sliding block. The tightness of the tail end of the capsule body in the plugging process is ensured by the rubber sheet arranged at the bottom of the sleeve and the upper surface of the sliding block, and the plugging quality is ensured.
Preferably, a front baffle plate for limiting the front bracket is further arranged on the side wall of the valve body; the outside of sleeve is equipped with the backplate that is used for providing the convenient back bracing piece operation of fulcrum. The front baffle is utilized to limit the space between the upper part and the front part of the capsule body, and the rear baffle is utilized to facilitate the pushing and pulling of the rear supporting rod, so that the operation is facilitated.
Preferably, the ship further comprises a U-shaped bracket, the U-shaped bracket comprises a bottom frame and side brackets arranged at two ends of the bottom frame, the end parts of the side brackets prop against the ship wall around the ship body hole, and through holes for the tail ends of the rear supporting rods to pass through are formed in the bottom frame.
Preferably, the U-shaped support is also matched with a locking mechanism, the locking mechanism comprises external threads arranged on the side wall of the rear half part of the rear support rod and fixing nuts matched with the external threads, and a pair of handles are symmetrically arranged on the fixing nuts. The locking mechanism and the U-shaped bracket are utilized to fix the whole plugging device, so that the plugging quality is further ensured.
The invention has the following advantages:
1. according to the invention, the inner space of the capsule body is regulated by utilizing the front support rod and the rear support rod, the impact force of water flow at the valve body and the ship hole is utilized to enable the water flow to enter the capsule body and gradually prop open the capsule body, and the ship hole is plugged by matching with the sliding block, so that the purposes of reducing the operation difficulty, realizing quick plugging and improving the safety coefficient of the ship and personnel on the ship are achieved.
2. The invention realizes the adjustment of the valve core by utilizing the valve rod, the loop bar and the spring, and the nut is freely adjusted to seal under the action of the water pressure inside and outside the valve body.
3. According to the invention, the moving distance of the sliding block is limited by the slotted hole and the cross beam, so that the damage of the sliding block to the end part of the bag body under the condition of excessive force is avoided, and the service life of the equipment is prolonged.
4. According to the invention, the tightness of the tail end of the capsule body in the plugging process is ensured by the rubber sheet arranged at the bottom of the sleeve and the upper surface of the sliding block, and the plugging quality is ensured.
5. The front baffle plate is used for limiting the front space on the bag body, and the rear baffle plate is used for facilitating pushing and pulling of the rear supporting rod, so that the operation is facilitated.
6. The invention uses the locking mechanism and the U-shaped bracket to fix the whole plugging device, thereby further ensuring the plugging quality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
FIG. 1 is a cross-sectional view of a marine water bag type plugging plug according to an embodiment of the present invention;
fig. 2 is a schematic front view of a capsule in a marine water-bag type plugging plug according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a valve body in a marine water bag-type plugging plug according to an embodiment of the present invention;
FIG. 4 is a sectional view showing the structure of a marine water bag type plugging plug according to an embodiment of the present invention in an initial state;
corresponding part names are indicated by numerals and letters in the drawings:
1. bladder 11, rubber bladder wall 12, front mounting ring 13, rear mounting ring 14, front support
15. Rear bracket 21, underframe 22, side brackets 23, fixing nut 24, handle 3, valve body
31. Adjusting nut 32, sleeve rod 33, valve rod 34, valve core 35, spring 36, water inlet hole
37. Front baffle 4, front support rod 41, cross beam 5, sleeve 51, rear baffle 6, rear support rod 61, bearing plate 62, slot 63, slide block 64 and rubber sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The invention provides a marine water bag type plugging plug, which has the working principle that the inner space of a bag body is regulated by utilizing a front supporting rod and a rear supporting rod, the water flow enters the bag body and is gradually spread by utilizing the impact force of the water flow at the position of a valve body and a ship hole, and the ship hole is plugged by matching with a sliding block, so that the purposes of reducing the operation difficulty, realizing quick plugging and improving the safety coefficient of ships and shipmen are achieved.
The present invention will be described in further detail with reference to examples and embodiments.
As shown in fig. 1 to 4, a marine water bag type plugging plug comprises a contractible bag body 1 and a U-shaped bracket.
The two ends of the bag body are communicated, the bag body comprises a rubber bag wall 11, a front mounting circular ring 12, a rear mounting circular ring 13, six front brackets 14 hinged with the front mounting circular ring and six rear brackets 15 hinged with the rear mounting circular ring, the front brackets and the rear brackets are in one-to-one correspondence and are hinged, and the rubber bag wall is connected between the adjacent front brackets and the adjacent rear brackets;
the through hole of bag body head end articulates there is conical valve body 3, the head end of valve body is the opening form, the opening part of valve body is equipped with adjusting nut 31, the inside of valve body is equipped with the adjustment mechanism who is used for sealing this opening form, adjustment mechanism includes and sets up the valve body is inside and be hollow loop bar 32, be equipped with valve rod 33 in the loop bar, the head end of valve rod is equipped with and is used for shutoff adjusting nut's case 34, the cover is equipped with spring 35 on the loop bar, the top of spring sets up the bottom of case, and under natural state, the case supports under the spring effect adjusting nut realizes sealedly, under the pressure effect, case and valve rod can move to the loop bar. The bottom end of the valve body is hinged with the head end of the bag body, the tail end of the valve body is provided with a front supporting rod 4, the tail end of the front supporting rod is provided with a cross beam 41 which is a solid cylinder, and the tail end of the valve body is provided with a water inlet 36; the side wall of the valve body is also provided with a front baffle 37 for limiting the front bracket.
The through hole at the tail end of the bag body is connected with a sleeve 5, the rear mounting circular ring is sleeved on the outer side wall of the sleeve and fixedly connected with the sleeve, the through hole at the tail end of the bag body is provided with a rear supporting rod 6, the head end of the rear supporting rod penetrates through the sleeve and is arranged in the bag body, the side wall of the head end of the rear supporting rod is also provided with a bearing plate 61 for blocking the water inlet hole, the head end of the rear supporting rod is provided with a strip-shaped slotted hole 62, the cross beam is arranged in the slotted hole and can move along the slotted hole, the rear supporting rod is also provided with a prismatic sliding block 63 for blocking the through hole at the tail end of the bag body, the sliding block is arranged in the bag body, the bottom of the sleeve and the upper surface of the sliding block are both provided with rubber sheets 64, and the center to the tail end of the rear supporting rod are both arranged outside the bag body;
the outside of the sleeve is provided with a tailgate 51 for providing a fulcrum for convenient operation of the rear support bar.
The U-shaped bracket comprises a bottom frame 21 and side brackets 22 arranged at two ends of the bottom frame, the end parts of the side brackets prop against the ship wall around the ship body hole, and through holes for the tail ends of the rear supporting rods to pass through are formed in the bottom frame. The U-shaped support is matched with a locking mechanism, the locking mechanism comprises external threads (not shown) arranged on the side wall of the rear half part of the rear support rod and fixing nuts 23 matched with the external threads, and a pair of handles 24 are symmetrically arranged on the fixing nuts.
The specific using steps of the invention are as follows: in the initial state, as shown in fig. 4, the rear supporting rod 6 is pushed forward to the limit position, at this time, the bearing plate 61 is propped against the bottom of the valve body 3, the sliding block 63 is positioned at the hinged position of the front bracket 14 and the rear bracket 15, the cross beam of the front supporting rod 4 is positioned at the rearmost end of the slotted hole, and the bag body at this time is long and is convenient to place.
When a hole on the hull is needed to be plugged, as shown in fig. 1, 2 and 4, the bag body in the initial state is stretched into the hole, the rear supporting rod 6 is held and props against the rear baffle plate 51 (similar to umbrella supporting action), the rear supporting rod is pulled backwards along the water flow direction until the cross beam of the front supporting plate is positioned at the front end of the slot, the bearing plate 61 is far away from the valve body, the sliding block 63 is tightly attached to the sleeve 5, the front support 14 and the rear support 15 are stretched under the supporting action of the sliding block 63, the front support 14 is deformed into a round surface by a cone (1. The bag body is composed of a support and a rubber bag wall, and the rubber bag wall can move along with the rotation of the support without damage, 2. The proper lengths of the front support and the rear support can be selected through wired experiments, and the front support is in a vertical state at the position.
At this time, the water inlet 36 of the valve body 3 is not blocked, and the pressure ratio of the water flow is larger, and at this time, the inside of the capsule body is hollow, and the pressure is smaller, so the water flow can squeeze the valve core 34, a water inlet space appears between the valve core and the adjusting nut 31, at this time, the water flow continuously enters and has the water inlet to enter the inside of the capsule body, and along with the continuous injection of the water flow in the capsule body, the capsule body continuously expands to block the hole (as shown in fig. 1 and 2).
With the continuous opening of the capsule body, the side wall of the hole is extruded, the internal water pressure in the capsule body is higher than the external water pressure, and the valve core is ejected out to close the adjusting nut 31 under the action of the internal water pressure and the spring 35.
And finally sleeving the U-shaped support into the rear support rod, and fixing the whole plugging device by using external threads on the rear support rod, a fixing nut and a handle, so that the plugging device is in a stable working state.
Through the mode, the marine water bag type plugging stopper provided by the invention has the advantages that the inner space of the bag body is regulated by utilizing the front supporting rod and the rear supporting rod, the water flow enters the bag body and is gradually spread by utilizing the impact force of the water flow at the position of the valve body and the ship hole, and the position of the ship hole is plugged by matching with the sliding block, so that the purposes of reducing the operation difficulty, realizing quick plugging and improving the safety coefficient of the ship and the personnel on the ship are achieved.
While the invention has been described with respect to the preferred embodiments of the marine water bladder type plugging disclosed herein, it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, and remain within the scope of the invention.
Claims (1)
1. The marine water bag type plugging plug is characterized by comprising a contractible bag body, wherein two ends of the bag body are communicated, and two ends of the bag body are provided with through holes;
the through hole at the head end of the bag body is hinged with a conical valve body, the head end of the valve body is in an opening shape, an adjusting mechanism for closing the opening shape is arranged in the valve body, the bottom end of the valve body is hinged with the head end of the bag body, the tail end of the valve body is provided with a front supporting rod, and the tail end of the valve body is provided with a water inlet hole;
the through hole at the tail end of the bag body is connected with a rear supporting rod, the head end of the rear supporting rod penetrates through the through hole at the tail end of the bag body and is arranged in the bag body, the side wall of the head end of the rear supporting rod is also provided with a pressure bearing plate for blocking the water inlet hole, the rear supporting rod is also provided with a prismatic-table-shaped sliding block for blocking the through hole at the tail end of the bag body, the sliding block is arranged in the bag body, and the center to the tail end of the rear supporting rod are all arranged outside the bag body;
the capsule body comprises a rubber capsule wall, a front mounting circular ring, a rear mounting circular ring, six front brackets hinged with the front mounting circular ring and six rear brackets hinged with the rear mounting circular ring, wherein the front brackets and the rear brackets are in one-to-one correspondence and are hinged, and the rubber capsule wall is connected between the adjacent front brackets and the adjacent rear brackets;
the valve is characterized in that an adjusting nut is arranged at the opening of the valve body, the adjusting mechanism comprises a hollow sleeve rod which is arranged in the valve body, a valve rod is arranged in the sleeve rod, a valve core for plugging the adjusting nut is arranged at the head end of the valve rod, a spring is sleeved on the sleeve rod, the top of the spring is arranged at the bottom of the valve core, in a natural state, the valve core props against the adjusting nut under the action of the spring to realize sealing, and the valve core and the valve rod move into the sleeve rod under the action of pressure;
the head end of the rear supporting rod is provided with a strip-shaped slotted hole, the tail end of the front supporting rod is provided with a cross beam which is a solid cylinder, the cross beam is arranged in the slotted hole, and the cross beam can move along the slotted hole;
the through hole at the tail end of the bag body is provided with a sleeve, the rear mounting circular ring is sleeved on the outer side wall of the sleeve and fixedly connected with the sleeve, the sleeve is provided with a through hole for the tail end of the rear supporting rod to pass through, and the bottom of the sleeve and the upper surface of the sliding block are both provided with rubber sheets;
a front baffle for limiting the front bracket is also arranged on the side wall of the valve body; the outer side of the sleeve is provided with a rear baffle plate which is used for providing a fulcrum and facilitating the operation of the rear support rod;
the utility model also comprises a U-shaped bracket, wherein the U-shaped bracket comprises a bottom frame and side brackets arranged at two ends of the bottom frame, the end parts of the side brackets are propped against the ship wall around the ship body hole, and the underframe is provided with through holes for the tail ends of the rear supporting rods to pass through;
the U-shaped support is further matched with a locking mechanism, the locking mechanism comprises external threads arranged on the side wall of the rear half portion of the rear support rod and fixing nuts matched with the external threads, and a pair of handles are symmetrically arranged on the fixing nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186629.2A CN109823489B (en) | 2019-03-13 | 2019-03-13 | Water sac type plugging plug for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186629.2A CN109823489B (en) | 2019-03-13 | 2019-03-13 | Water sac type plugging plug for ship |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109823489A CN109823489A (en) | 2019-05-31 |
| CN109823489B true CN109823489B (en) | 2024-03-26 |
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ID=66868934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910186629.2A Active CN109823489B (en) | 2019-03-13 | 2019-03-13 | Water sac type plugging plug for ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109823489B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114739577A (en) * | 2020-10-29 | 2022-07-12 | 山东硕达通机械设备有限公司 | Automobile engine cylinder lid gas tightness test equipment |
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|---|---|---|---|---|
| US4329132A (en) * | 1980-10-06 | 1982-05-11 | Rockwell International Corporation | Hole plugging system |
| DE19957445A1 (en) * | 1999-11-29 | 2001-05-31 | Guenter Roskopf | Plugging device to seal leak in hull wall of ship, with centrally bored rod having service-side end and leak-side end with conical cover |
| CN2750979Y (en) * | 2004-12-10 | 2006-01-11 | 曾庆华 | Leak stoppage device for ship |
| KR20100096587A (en) * | 2009-02-24 | 2010-09-02 | 박철홍 | Waterproof emergency kit |
| CN203937837U (en) * | 2014-05-05 | 2014-11-12 | 浙江海洋学院 | The small-bore damaged device for plugging of a kind of boats and ships liquid cabin and pipeline |
| FR3021292A1 (en) * | 2014-05-26 | 2015-11-27 | Daniel Marcireau | DEVICE FOR SHUTTING AN ORIFICE IN A WALL |
| CN108163159A (en) * | 2018-01-18 | 2018-06-15 | 中国人民解放军陆军军事交通学院镇江校区 | A kind of lost circulation plug peculiar to vessel |
| CN108482609A (en) * | 2018-04-18 | 2018-09-04 | 天津艾孚森科技发展有限公司 | A kind of air-bag for ship device for plugging |
| CN108909966A (en) * | 2018-07-19 | 2018-11-30 | 芜湖籁余新能源科技有限公司 | A kind of ship emergency leak repairing component |
| CN210162227U (en) * | 2019-03-13 | 2020-03-20 | 中国人民解放军陆军军事交通学院镇江校区 | Marine water bag type plugging plug |
-
2019
- 2019-03-13 CN CN201910186629.2A patent/CN109823489B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4329132A (en) * | 1980-10-06 | 1982-05-11 | Rockwell International Corporation | Hole plugging system |
| DE19957445A1 (en) * | 1999-11-29 | 2001-05-31 | Guenter Roskopf | Plugging device to seal leak in hull wall of ship, with centrally bored rod having service-side end and leak-side end with conical cover |
| CN2750979Y (en) * | 2004-12-10 | 2006-01-11 | 曾庆华 | Leak stoppage device for ship |
| KR20100096587A (en) * | 2009-02-24 | 2010-09-02 | 박철홍 | Waterproof emergency kit |
| CN203937837U (en) * | 2014-05-05 | 2014-11-12 | 浙江海洋学院 | The small-bore damaged device for plugging of a kind of boats and ships liquid cabin and pipeline |
| FR3021292A1 (en) * | 2014-05-26 | 2015-11-27 | Daniel Marcireau | DEVICE FOR SHUTTING AN ORIFICE IN A WALL |
| CN108163159A (en) * | 2018-01-18 | 2018-06-15 | 中国人民解放军陆军军事交通学院镇江校区 | A kind of lost circulation plug peculiar to vessel |
| CN108482609A (en) * | 2018-04-18 | 2018-09-04 | 天津艾孚森科技发展有限公司 | A kind of air-bag for ship device for plugging |
| CN108909966A (en) * | 2018-07-19 | 2018-11-30 | 芜湖籁余新能源科技有限公司 | A kind of ship emergency leak repairing component |
| CN210162227U (en) * | 2019-03-13 | 2020-03-20 | 中国人民解放军陆军军事交通学院镇江校区 | Marine water bag type plugging plug |
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| CN109823489A (en) | 2019-05-31 |
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