CN112319697A - Automatic wrapping device for oil tank behind sunken ship - Google Patents

Automatic wrapping device for oil tank behind sunken ship Download PDF

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Publication number
CN112319697A
CN112319697A CN202011362132.0A CN202011362132A CN112319697A CN 112319697 A CN112319697 A CN 112319697A CN 202011362132 A CN202011362132 A CN 202011362132A CN 112319697 A CN112319697 A CN 112319697A
Authority
CN
China
Prior art keywords
face
fixedly arranged
connector
oil tank
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN202011362132.0A
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Chinese (zh)
Inventor
刘俊皮
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuzhou Economic And Technological Development Zone Kangtaiyuan Technology Co ltd
Original Assignee
Fuzhou Economic And Technological Development Zone Kangtaiyuan Technology Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuzhou Economic And Technological Development Zone Kangtaiyuan Technology Co ltd filed Critical Fuzhou Economic And Technological Development Zone Kangtaiyuan Technology Co ltd
Priority to CN202011362132.0A priority Critical patent/CN112319697A/en
Publication of CN112319697A publication Critical patent/CN112319697A/en
Withdrawn legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00Vessels parts, details, or accessories, not otherwise provided for
    • B63B17/0027Tanks for fuel or the like ; Accessories therefor, e.g. tank filler caps

Abstract

The invention discloses an automatic wrapping device of an oil tank behind a sunken ship, which comprises a mounting block, wherein a mounting cavity with an upward opening is arranged in the mounting block, an opening with an inward opening is arranged on the inner wall of the mounting cavity, a circle of annular chute is arranged on the inner wall of the opening far away from the mounting cavity, the annular chute is communicated with the external space through the opening, a foaming mechanism is arranged in the annular chute and is used for driving a foaming bottle to foam and seal the oil tank inside the mounting cavity, the automatic wrapping device can automatically seal and wrap the oil tank behind the sunken ship, prevent the oil tank from being damaged, prevent engine oil from leaking into the sea and polluting the marine ecology, has low manufacturing cost, detects the infiltration of water through a detection mechanism, detects the sunken ship through an auxiliary mechanism, completes the foam sealing of the oil tank through a polyurethane foaming agent in the foaming mechanism, and prevents the engine oil from leaking, effectively protecting the marine environment.

Description

Automatic wrapping device for oil tank behind sunken ship
Technical Field
The invention relates to the field of detection boxes, in particular to an automatic wrapping device for a submerged oil tank.
Background
The oil tank for the ship is a container for putting fuel, the oil tank has enough volume, after the ship body running on the sea is attacked by pirates, the ship body sinks into the sea bottom, and the 'heavy oil' in the oil tank enters the marine environment to greatly influence the growth and the reproduction of aquatic organisms and the whole ecological system, so a device for detecting the sunken ship is required to be arranged for protecting the oil tank after the sunken ship is sunk and preventing the petroleum in the oil tank from seeping.
Disclosure of Invention
The invention aims to provide an automatic wrapping device for an oil tank after sinking a ship, which overcomes the problems.
The invention is realized by the following technical scheme.
The automatic wrapping device for the oil tank after sinking comprises a mounting block, wherein a mounting cavity with an upward opening is arranged in the mounting block, an opening with an inward opening is formed in the inner wall of the mounting cavity, a circle of annular sliding groove is formed in the inner wall, away from the mounting cavity, of the opening, the annular sliding groove is communicated with the external space through the opening, a foaming mechanism is arranged in the annular sliding groove and is used for driving a foaming bottle to foam and seal the oil tank in the mounting cavity;
the detection mechanism comprises a circuit block fixedly arranged in the placement block, a first connector is fixedly arranged on the upper end face of the circuit block, a first lead is fixedly arranged on the lower end face of the first connector, the driving motor is fixedly arranged on the lower end face of the first lead, a second lead is fixedly arranged on the lower end face of the driving motor, a power supply is fixedly arranged on the lower end face of the second lead, a third lead is fixedly arranged on the lower end face of the power supply, a second connector is fixedly arranged on the right end face of the third lead, the second connector is fixedly connected with the right end face of the circuit block, a third connector is fixedly arranged on the right end face of the circuit block, the third connector is positioned on the upper side of the second connector, a fourth lead is fixedly arranged on the left end face of the third connector, a fourth connector is fixedly arranged on the upper end face of the fourth lead, and the fourth connector is fixedly connected with the upper end face of the circuit, the first joint and the fourth joint penetrate through the inner wall of the lower side of the placement cavity, and part of the first joint and the fourth joint are positioned in the placement cavity;
the detection mechanism right side is equipped with complementary unit, foaming mechanism includes settle the ascending intake antrum of opening that chamber downside inner wall was equipped with, the intake antrum left side is equipped with the rare gas chamber, it is equipped with first slide and second slide to slide in the rare gas chamber, and the fixed connecting rod that is equipped with of second slide left end face the fixed conducting block that is equipped with of connecting rod left end face, the fixed compression spring that is equipped with of conducting block left end face, compression spring with circuit block right-hand member face fixed connection.
Preferably, foaming mechanism includes annular chute downside inner wall rotates the big hollow gear that is equipped with, big hollow gear is connected with pinion engagement, the pinion internal fixation is equipped with driven spindle, the fixed first bevel gear that is equipped with of terminal surface under the driven spindle, first bevel gear is connected with second bevel gear engagement, second bevel gear right-hand member face is fixed and is equipped with the initiative pivot, initiative pivot right-hand member face with driving motor fixed connection, big hollow gear up end is fixed and is equipped with the foaming bottle, the fixed nozzle that is equipped with on the foaming bottle, the fixed start-up injection pump head that is equipped with of foaming bottle up end, start-up injection pump head is used for opening the polyurethane foaming agent.
Preferably, a fixed shaft is arranged in the placement block, a cover plate is fixedly arranged on the front end face and the rear end face of the fixed shaft, a hollow groove with a downward opening is arranged in the cover plate, a first sliding block is arranged in the first sliding groove in a sliding manner, a first spring is fixedly arranged on the lower end face of the first sliding block, the lower end face of the first spring is fixedly connected with the lower side of the first sliding groove, a second sliding block is fixedly arranged on the lower end face of the first sliding block, a clamping groove with a leftward opening is arranged in the second sliding block, a forehead clamping groove with an upward opening is arranged in the placement block, a sealing mechanism is arranged in the clamping groove and comprises a second sliding groove with a rightward opening, a third sliding block is arranged in the second sliding groove in a sliding manner, a telescopic rod is fixedly arranged on the right end face of the third sliding block, the lower end face of the second spring is fixedly connected with the inner wall of the lower side of the second sliding groove, a thin rope is fixedly arranged on the lower end face of the third sliding block, the thin rope penetrates through the second sliding groove and enters the wire winding cavity to be wound on a wire winding wheel, the wire winding cavity is arranged in the placement block, a wire winding shaft is arranged on the inner wall of the left side and the right side of the wire winding cavity in a rotating mode, the wire winding wheel is fixedly arranged on the wire winding shaft, a second bevel gear is fixedly arranged on the wire winding shaft and is in meshed connection with a first bevel gear, and the driven rotating shaft is fixedly arranged on the lower end face of.
Preferably, the rare gas cavity is filled with rare gas, the foaming bottle is filled with a polyurethane foaming agent, the polyurethane foaming agent has the characteristics of good adhesion, no toxicity, water resistance, light weight and the like, and the oil tank coated with the polyurethane foaming material can prevent the oil tank from being damaged and oil from flowing into the sea.
Preferably, the first connector and the fourth connector can conduct electricity through seawater communication, and the conducting block can conduct electricity after contacting the second connector and the third connector.
The invention has the beneficial effects that: the invention can automatically seal and wrap the oil tank after sinking the ship, prevent the oil tank from being damaged, the engine oil leaks into the sea, cause pollution to the marine ecology, the invention has low cost, detect the infiltration of water through the detection mechanism, detect the sinking the ship through the auxiliary mechanism, finish the foaming seal to the oil tank through the polyurethane foaming agent in the foaming mechanism, prevent the engine oil from leaking, protect the marine environment effectively.
Drawings
In order to more clearly illustrate the embodiments of the 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, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
3 FIG. 32 3 is 3 a 3 schematic 3 view 3 of 3 the 3 embodiment 3 of 3 the 3 present 3 invention 3 in 3 the 3 direction 3 of 3 A 3- 3 A 3 in 3 FIG. 31 3; 3
FIG. 3 is an enlarged schematic view of the embodiment of the present invention at B in FIG. 1;
FIG. 4 is an enlarged schematic view of the embodiment of the present invention at C in FIG. 1.
Detailed Description
The invention will now be described in detail with reference to fig. 1-4, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.
The automatic wrapping device for the oil tank after sunken ship described in conjunction with fig. 1-4 comprises a mounting block 10, wherein a mounting cavity 11 with an upward opening is arranged in the mounting block 10, an opening 13 with an inward opening is arranged on the inner wall of the mounting cavity 11, a ring of annular chute 12 is arranged on the inner wall of the opening 13 far away from the mounting cavity 11, the annular chute 12 is communicated with the external space through the opening 13, a foaming mechanism 70 is arranged in the annular chute 12, and the foaming mechanism 70 is used for driving a foaming bottle 31 to foam and seal the oil tank in the mounting cavity 11;
a detection mechanism 71 is arranged in the placement block 10, the detection mechanism 71 includes a circuit block 22 fixedly arranged in the placement block 10, a first connector 20 is fixedly arranged on the upper end surface of the circuit block 22, a first lead 35 is fixedly arranged on the lower end surface of the first connector 20, the driving motor 36 is fixedly arranged on the lower end surface of the first lead 35, a second lead 37 is fixedly arranged on the lower end surface of the driving motor 36, a power source 38 is fixedly arranged on the lower end surface of the second lead 37, a third lead 39 is fixedly arranged on the lower end surface of the power source 38, a second connector 40 is fixedly arranged on the right end surface of the third lead 39, the second connector 40 is fixedly connected with the right end surface of the circuit block 22, a third connector 42 is fixedly arranged on the right end surface of the circuit block 22, the third connector 42 is positioned on the upper side of the second connector 40, and a fourth lead 43 is fixedly arranged on the left end surface of the third connector, a fourth connector 21 is fixedly arranged on the upper end face of the fourth lead 43, the fourth connector 21 is fixedly connected with the upper end face of the circuit block 22, and the first connector 20 and the fourth connector 21 penetrate through the inner wall of the lower side of the placement cavity 11 and are partially positioned in the placement cavity 11;
detection mechanism 71 right side is equipped with complementary unit 72, foaming mechanism 70 includes settle ascending intake chamber 30 of opening that chamber 11 downside inner wall was equipped with, intake chamber 30 left side is equipped with rare gas chamber 28, it has first slide 29 and second slide 27 to slide in the rare gas chamber 28, and second slide 27 left end face is fixed and is equipped with connecting rod 26 the fixed conducting block 25 that is equipped with of connecting rod 26 left end face, the fixed compression spring 24 that is equipped with of conducting block 25 left end face, compression spring 24 with circuit block 22 right end face fixed connection.
Advantageously, the foaming mechanism 70 includes a large hollow gear 14 rotatably disposed on the inner wall of the lower side of the annular chute 12, the large hollow gear 14 is in meshed connection with a small gear 15, a driven rotating shaft 16 is fixedly disposed inside the small gear 15, a first bevel gear 17 is fixedly disposed on the lower end surface of the driven rotating shaft 16, the first bevel gear 17 is in meshed connection with a second bevel gear 18, a driving rotating shaft 19 is fixedly disposed on the right end surface of the second bevel gear 18, the right end surface of the driving rotating shaft 19 is fixedly connected with the driving motor 36, the upper end surface of the large hollow gear 14 is fixedly disposed with the foaming bottle 31, the foaming bottle 31 is fixedly disposed with the nozzle 32, the upper end surface of the foaming bottle 31 is fixedly disposed with a start spray pump head 33, and the start spray pump head 33 is used for starting the polyurethane foaming agent.
Beneficially, a fixed shaft 44 is arranged in the placement block 10, a cover plate 45 is fixedly arranged on the front end surface and the rear end surface of the fixed shaft 44, a hollow groove 46 with a downward opening is arranged in the cover plate 45, a first sliding groove 48 with a downward opening is arranged in the cover plate 45, a first sliding block 49 is slidably arranged in the first sliding groove 48, a first spring 51 is fixedly arranged on the lower end surface of the first sliding block 49, the lower end surface of the first spring 51 is fixedly connected with the lower side of the first sliding groove 48, a second sliding block 50 is fixedly arranged on the lower end surface of the first sliding block 49, a clamping groove 52 with a leftward opening is arranged in the second sliding block 50, a forehead clamping groove 47 with an upward opening is arranged in the placement block 10, a sealing mechanism 73 is arranged in the clamping groove 47, the sealing mechanism 73 comprises a second sliding groove 53 with a rightward opening and arranged on the inner wall of the left side of the clamping groove, the right end face of the third slider 54 is fixedly provided with a telescopic rod 55, the lower end face of the third slider 54 is fixedly provided with a second spring 56, the lower end face of the second spring 56 is fixedly connected with the inner wall of the lower side of the second chute 53, the lower end face of the third slider 54 is fixedly provided with a thin rope 57, the thin rope 57 penetrates through the second chute 53 and enters a wire winding cavity 60 to be wound on a wire winding wheel 58, the wire winding cavity 60 is arranged in the placement block 10, the inner walls of the left side and the right side of the wire winding cavity 60 are rotatably provided with wire winding shafts 59, the wire winding wheels 58 are fixedly arranged on the wire winding shafts 59, a second bevel gear 61 is fixedly arranged on the wire winding shafts 59, the second bevel gear 61 is meshed with a first bevel gear 62, and the driven rotating shaft 16 is fixedly arranged on the lower.
Advantageously, the rare gas cavity 28 is filled with rare gas, the foaming bottle 31 is filled with polyurethane foaming agent, the polyurethane foaming agent has the characteristics of good adhesion, no toxicity, water resistance, light weight and the like, and the oil tank coated with polyurethane foaming material can prevent the oil tank from being damaged and oil from flowing into the sea.
Advantageously, the first connector 20 and the fourth connector 21 are electrically conductive through seawater communication, and the conductive block 25 is electrically conductive after contacting the second connector 40 and the third connector 42.
Application method
In the initial state, the compression spring 24 is in the normal state and the power source 38 is in the activated state.
The oil tank is arranged in the arrangement cavity 11, the inner wall of the lower side of the arrangement cavity 11 is fixedly connected with the oil tank, when a ship sinking accident happens,
when the external pressure is increased, the auxiliary mechanism 72 slides leftwards, the gas in the rare gas cavity 28 pushes the second sliding plate 27 to slide leftwards, the second sliding plate 27 drives the connecting rod 26 to slide leftwards, the connecting rod 26 drives the conductive block 25 to move leftwards, the compression spring 24 is compressed, and the conductive block 25 is respectively contacted with the third joint 42 and the second joint 40 to communicate the second joint 40 with the third joint 42.
Meanwhile, the seawater submerges the installation block 10, the first connector 20 and the fourth connector 21 are communicated through the seawater, and the circuits are communicated in series.
The expansion rod 55 is extended to extend into the slot 52, the driving motor 36 is started, the driving motor 36 controls the driving rotation shaft 19 to rotate, the driving rotation shaft 19 drives the second bevel gear 18 to rotate, the second bevel gear 18 drives the first bevel gear 17 to rotate, the first bevel gear 17 drives the driven rotation shaft 16 to rotate,
the driven rotating shaft 16 drives the first bevel gear 62 to rotate, the first bevel gear 62 drives the second bevel gear 61 to rotate, the second bevel gear 61 drives the wire collecting shaft 59 to rotate, the wire collecting shaft 59 drives the wire collecting wheel 58 to rotate, the wire collecting wheel 58 rotates to collect wires, the thin rope 57 is wound on the wire collecting wheel 58, the third sliding block 54 slides downwards, the second spring 56 is compressed, the third sliding block 54 drives the telescopic rod 55 to move, the telescopic rod 55 drives the second sliding block 50 to move downwards, the second sliding block 50 drives the first sliding block 49 to slide downwards, the first spring 51 is compressed, the cover plate 45 and the placement block 10 are locked and sealed, and therefore the oil tank is prevented from being damaged, and oil is prevented from leaking.
The driven rotating shaft 16 drives the pinion gear 15 to rotate, the pinion gear 15 drives the large hollow gear 14 to rotate in the annular chute 12, the large hollow gear 14 drives the foaming bottle 31 to move in the annular chute 12, the injection pump head 33 is started while moving, the injection pump head 33 is started, the polyurethane foaming agent in the foaming bottle 31 is sprayed into the arranging cavity 11 through the nozzle 32 by the start injection pump head 33, and the oil tank is subjected to foaming and sealing packaging.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims (5)

1. The utility model provides an automatic parcel device of oil tank behind sunken ship, is including settling the piece, its characterized in that: the oil tank is characterized in that a mounting cavity with an upward opening is arranged in the mounting block, an opening with an inward opening is arranged on the inner wall of the mounting cavity, a circle of annular sliding groove is arranged on the inner wall of the opening, which is far away from the mounting cavity, the annular sliding groove is communicated with the external space through the opening, a foaming mechanism is arranged in the annular sliding groove, and the foaming mechanism is used for driving a foaming bottle to foam and seal an oil tank in the mounting cavity;
the detection mechanism comprises a circuit block fixedly arranged in the placement block, a first connector is fixedly arranged on the upper end face of the circuit block, a first lead is fixedly arranged on the lower end face of the first connector, the driving motor is fixedly arranged on the lower end face of the first lead, a second lead is fixedly arranged on the lower end face of the driving motor, a power supply is fixedly arranged on the lower end face of the second lead, a third lead is fixedly arranged on the lower end face of the power supply, a second connector is fixedly arranged on the right end face of the third lead, the second connector is fixedly connected with the right end face of the circuit block, a third connector is fixedly arranged on the right end face of the circuit block, the third connector is positioned on the upper side of the second connector, a fourth lead is fixedly arranged on the left end face of the third connector, a fourth connector is fixedly arranged on the upper end face of the fourth lead, and the fourth connector is fixedly connected with the upper end face of the circuit, the first joint and the fourth joint penetrate through the inner wall of the lower side of the placement cavity, and part of the first joint and the fourth joint are positioned in the placement cavity;
the detection mechanism right side is equipped with complementary unit, foaming mechanism includes settle the ascending intake antrum of opening that chamber downside inner wall was equipped with, the intake antrum left side is equipped with the rare gas chamber, it is equipped with first slide and second slide to slide in the rare gas chamber, and the fixed connecting rod that is equipped with of second slide left end face the fixed conducting block that is equipped with of connecting rod left end face, the fixed compression spring that is equipped with of conducting block left end face, compression spring with circuit block right-hand member face fixed connection.
2. The automatic wrapping device for the oil tank after sinking a ship according to claim 1, wherein: foaming mechanism includes annular chute downside inner wall rotates the big hollow gear who is equipped with, big hollow gear is connected with little gear engagement, little gear internal fixation is equipped with driven spindle, the fixed first bevel gear that is equipped with of terminal surface under the driven spindle, first bevel gear is connected with second bevel gear engagement, second bevel gear right-hand member face is fixed and is equipped with the initiative pivot, initiative pivot right-hand member face with driving motor fixed connection, big hollow gear up end is fixed and is equipped with the foaming bottle, the fixed nozzle that is equipped with on the foaming bottle, the fixed start-up injection pump head that is equipped with of foaming bottle up end, start-up injection pump head is used for opening the polyurethane foamer.
3. The automatic wrapping device for the oil tank after sinking a ship according to claim 1, wherein: a fixed shaft is arranged in the placement block, a cover plate is fixedly arranged on the front end face and the rear end face of the fixed shaft, a dead slot with a downward opening is arranged in the cover plate, a first sliding block is arranged in the first sliding slot in a sliding manner, a first spring is fixedly arranged on the lower end face of the first sliding block, the lower end face of the first spring is fixedly connected with the lower side of the first sliding slot, a second sliding block is fixedly arranged on the lower end face of the first sliding block, a clamping slot with a leftward opening is arranged in the second sliding block, a forehead clamping slot with an upward opening is arranged in the placement block, a sealing mechanism is arranged in the clamping slot, the sealing mechanism comprises a second sliding slot with a rightward opening, which is arranged on the inner wall on the left side of the clamping slot, a third sliding block is arranged in the second sliding slot in a, the lower end face of the second spring is fixedly connected with the inner wall of the lower side of the second sliding groove, a thin rope is fixedly arranged on the lower end face of the third sliding block, the thin rope penetrates through the second sliding groove and enters the wire winding cavity to be wound on a wire winding wheel, the wire winding cavity is arranged in the placement block, a wire winding shaft is arranged on the inner wall of the left side and the right side of the wire winding cavity in a rotating mode, the wire winding wheel is fixedly arranged on the wire winding shaft, a second bevel gear is fixedly arranged on the wire winding shaft and is in meshed connection with a first bevel gear, and the driven rotating shaft is fixedly arranged on the lower end face of.
4. The automatic wrapping device for the oil tank after sinking a ship according to claim 1, wherein: the rare gas cavity is filled with rare gas, the foaming bottle is filled with polyurethane foaming agent, the polyurethane foaming agent has the characteristics of good adhesion, no toxicity, water resistance, light weight and the like, and the oil tank coated with polyurethane foaming material can prevent the oil tank from being damaged and oil from flowing into the sea.
5. The automatic wrapping device for the oil tank after sinking a ship according to claim 1, wherein: the first connector and the fourth connector can be communicated through seawater to conduct electricity, and the conducting block can conduct electricity after contacting the second connector and the third connector.
CN202011362132.0A 2020-11-27 2020-11-27 Automatic wrapping device for oil tank behind sunken ship Withdrawn CN112319697A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011362132.0A CN112319697A (en) 2020-11-27 2020-11-27 Automatic wrapping device for oil tank behind sunken ship

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011362132.0A CN112319697A (en) 2020-11-27 2020-11-27 Automatic wrapping device for oil tank behind sunken ship

Publications (1)

Publication Number Publication Date
CN112319697A true CN112319697A (en) 2021-02-05

Family

ID=74308354

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202011362132.0A Withdrawn CN112319697A (en) 2020-11-27 2020-11-27 Automatic wrapping device for oil tank behind sunken ship

Country Status (1)

Country Link
CN (1) CN112319697A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115949527A (en) * 2023-03-10 2023-04-11 中国空气动力研究与发展中心空天技术研究所 Waterproof sealing assembly of engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115949527A (en) * 2023-03-10 2023-04-11 中国空气动力研究与发展中心空天技术研究所 Waterproof sealing assembly of engine
CN115949527B (en) * 2023-03-10 2023-05-30 中国空气动力研究与发展中心空天技术研究所 Waterproof sealing assembly of engine

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Application publication date: 20210205

WW01 Invention patent application withdrawn after publication