CN108609147A - A kind of ship leakage runner and fabrication and installation method - Google Patents
A kind of ship leakage runner and fabrication and installation method Download PDFInfo
- Publication number
- CN108609147A CN108609147A CN201810477410.3A CN201810477410A CN108609147A CN 108609147 A CN108609147 A CN 108609147A CN 201810477410 A CN201810477410 A CN 201810477410A CN 108609147 A CN108609147 A CN 108609147A
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- China
- Prior art keywords
- component
- water inlet
- flow channel
- inlet flow
- welding
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H11/02—Marine propulsion by water jets the propulsive medium being ambient water
- B63H11/04—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B71/00—Designing vessels; Predicting their performance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H11/00—Marine propulsion by water jets
- B63H2011/006—Marine propulsion by water jets with propulsive medium supplied from sources external to propelled vessel, e.g. water from public water supply
Abstract
The invention discloses a kind of ship leakage runner and fabrication and installation methods；It includes the firstth area of the water inlet flow channel component sequentially connected along water (flow) direction, the secondth area of water inlet flow channel component, in the bend part and vent component of bending cylinder shape；It further includes the stern tube shaft protection pipe for being parallel to horizontal plane and the anti-singing piece at the top of the inner surface of connection stern tube shaft protection pipe and bend part that one end passes through the secondth area of water inlet flow channel component.While the present invention had both retained water inlet flow channel structure building berth advantage in bulk, the case where a large amount of parts are bulked in building berth is avoided.
Description
Technical field
The present invention relates to a kind of ship leakage runner and fabrication and installation methods.
Background technology
In ship domain, as a kind of special propulsion mode, it is to utilize to spray high speed water from spray pump for hydraulic jet propulsion
The reaction force of stream pushes ship to advance.Hydraulic jet propulsion is compared with traditional propeller propulsion has more advantages, such as eats
Water is shallow, propulsive efficiency is high, underwater noise is small, it is strong to adapt to operating mode ability and high-speed space-time bubble performance is good etc..In general, water spray pushes away
It is mainly made of into system the part such as water inlet flow channel, spout, spray pump and transmission device, steering navigating reversing device.Water inlet flow channel is both
The important component of hydro-jet propulsion system, while being again an organic whole with main hull structure, therefore the system of water inlet flow channel
Make mode and erection stage, not only influences the difficulty of construction of runner, but also influence entire hydro-jet propulsion system equipment, the peace of shafting
Dress and adjustment.
The installation method of water inlet flow channel was in the past：The stern where water inlet flow channel is segmented first, is made in the segmentation stage
It completes, but the segmentation of this stage is not installed into water flow passage structure, intakes after stern segmentation enters the berth combination stage, then by composition
Whole parts of flow passage structure are installed on stern segmentation in the building berth stage by mode in bulk.The advantage of the fabrication and installation method
Spout, the installation of spray pump equipment and the adjustment of transmission device being easy in hydro-jet propulsion system, by adjusting water inlet flow channel knot
Structure ensures the installation accuracy of equipment；But building berth is the narrow resources of shipyard, and building berth construction period is also to weigh shipyard manufacture water
One major criterion of flat height, a large amount of parts substantially prolong building berth construction period in building berth mode in bulk, increase ship
The guarantee segmentation integrality of platform workload, this mode and current requirements and the requirement for reducing building berth construction period run in the opposite direction.
Invention content
The object of the present invention is to provide a kind of ship leakage runner and fabrication and installation methods, have both retained water inlet flow channel structure ship
While platform advantage in bulk, the case where a large amount of parts are bulked in building berth is avoided.
To achieve the above object, a kind of ship leakage runner provided by the present invention comprising sequentially connect along water (flow) direction
The firstth area of water inlet flow channel component, the secondth area of water inlet flow channel component, the bend part and vent component in bending cylinder shape connect；
It further includes that one end passes through the stern tube shaft for being parallel to horizontal plane of the water inlet flow channel the secondth area component and the bend part to protect
Pillar and the connection stern tube shaft protection pipe and the anti-singing piece at the top of the inner surface of the bend part.
In above-mentioned ship leakage runner, the anti-singing piece includes the both sides for being respectively arranged at stern tube shaft protection pipe periphery
And the first anti-singing piece and the second anti-singing piece being connect with the top of the bend part inner surface, the anti-singing piece are in
Demihull shape.
In above-mentioned ship leakage runner, the connector of vent component connection corresponding with the bend part perpendicular to
Horizontal plane.
The present invention also provides a kind of production methods of ship leakage runner, include the following steps：
A) the firstth area of water inlet flow channel component, is made：The part of the steel plate shaped by several, mounts on sectional jig
Welding forms；B) the secondth area of water inlet flow channel component, is made：Increase several gear number control moulding bed templates on sectional jig and carries out cross
To reinforcement, the part of the steel plate shaped is mounted into welding in moulding bed template；C) bend part, is made：Added by three blocks of steel plates
Work is that the part of three pieces of pipes is welded to form, and scale reinforcement is carried out before welding near each girth joint, with the bend part
An end face be basal plane, welding is carried out on mounting plate；D) stern tube shaft protection pipe, is made：Pass through finishing by two pieces of steel plate strips
Two pieces of semicircle tube components of work forming carry out welding and are assemblied to form；E) vent component, is made：The vent component includes sequentially connecting
The preceding cylinder that connects, in horn-like middle cylinder and rear cylinder；The preceding cylinder is rolled by one piece of steel plate strip respectively with rear cylinder
It is pressed into cylindrical shape, the middle cylinder is rolled into horn-like by two pieces of sector components.
In the production method of above-mentioned ship leakage runner, in the step c, the bow stern port of the bend part is respectively set
It is equipped with the construction surplus of 30mm-70mm.
In the production method of above-mentioned ship leakage runner, in the step d, after the semicircle tube components welding, to institute
It states stern tube shaft protection pipe and carries out 0.2MPa hydraulic pressure strength experiments.
In the production method of above-mentioned ship leakage runner, in the step e, when carrying out roll forming, in the steel bar
It is provided with wooden model.
The present invention also provides a kind of installation methods of ship leakage runner, include the following steps：Step 1: to it is described into
Annular abutment surface between water flow passage the secondth area component and the firstth area of water inlet flow channel component is welded；Step 2: to ship
Platform carries out first time axis irradiation, pulls out the first center line of shafting, and by first center line of shafting by the nozzle cap
The stern transom plate of part and hull carries out positioning welding；Step 3: according to vent component bow end port and the water inlet flow channel the
Position relationship between two areas component bow end port carries out surplus mowing to the bend part, and by the bend part
It is welded respectively with the vent component and the secondth area of the water inlet flow channel component bow stern port；Step 4: described curved
Anti- singing piece described in the part interior welds of head, the anti-singing piece upper end are welded with the bend part, the anti-singing under piece
End wouldn't be handled；Step 5: carrying out second of axis irradiation, in the secondth area of water inlet flow channel, component carries out trepanning, in the trepanning
Stern tube shaft protection pipe, the second center line of shafting obtained according to second of axis irradiation is disposed to be directed at the stern tube shaft protection pipe
Welding, and cutting anti-singing piece lower end surplus makes the anti-singing piece be bonded with the stern tube shaft protection pipe, and welded.
In the installation method of above-mentioned ship leakage runner, in step 2, in the vent component and first shafting
Coaxiality deviation between heart line is less than 2mm.
In the installation method of above-mentioned ship leakage runner, in step 3, the bend part and the vent component
Coaxiality deviation is less than 3mm.
A kind of ship leakage runner and fabrication and installation method that above-mentioned technical proposal is provided, compared with prior art,
Advantageous effect includes：1, by the way that water inlet flow channel is carried out Region Decomposition, six parts is divided into, the portion of equipment installation will not be influenced
Divide directly in the installation of segmentation stage, improves segmentation integrality, shorten building berth construction period；2, will need the building berth stage with
Equipment coordinates the part-structure of adjustment and installation, and in such a way that process shifts to an earlier date, part assembly welding, system are carried out on platform for lining
Building berth installation is entered back into after component as a whole, avoids the work that a large amount of parts are in bulk in building berth, while ensure that flow passage structure
With the nargin of equipment cooperation debugging；3, it is improved by the accuracy control method of increase tooling in making and the welding method in assembly
The accuracy of assembly meets technology requirement.
Description of the drawings
Fig. 1 is the structural schematic diagram of the ship leakage runner of the present invention；
Fig. 2 is the anti-singing chip part schematic diagram of the present invention；
Fig. 3 is the A-A sectional views of Fig. 2
Fig. 4 is the vent component schematic diagram of the present invention；
Fig. 5 is the bend part schematic diagram of the present invention；
Fig. 6 is the B-B sectional views of Fig. 5；
Fig. 7 is the C-C sectional views of Fig. 5；
Fig. 8 is the firstth area of water inlet flow channel component moulding bed template schematic diagram of the present invention；
Fig. 9 is the D-D sectional views of Fig. 8；
Wherein, the firstth area of 1- water inlet flow channels component, the secondth area of 2- water inlet flow channels component, 3- bend parts, 31- scales, 4-
Vent component, circle is logical before 41-, 42- middle cylinders, and cylinder after 43-, 5- stern tube shaft protection pipes, the anti-singing pieces of 6-, 61- first resists humorous
Ring piece, the second anti-singing pieces of 62-.
Specific implementation mode
With reference to the accompanying drawings and examples, the specific implementation mode of the present invention is described in further detail.Implement below
Example is not limited to the scope of the present invention for illustrating the present invention.
Please refer to attached drawing 1-9, a kind of ship leakage runner provided by the present invention comprising sequentially connected along water (flow) direction
The firstth area of water inlet flow channel component 1, the secondth area of water inlet flow channel component 2, in the bend part 3 and vent component of bending cylinder shape
4；It further includes the stern tube shaft protection pipe 5 for being parallel to horizontal plane and the connection that one end passes through the secondth area of water inlet flow channel component 2
The stern tube shaft protection pipe 5 and the anti-singing piece 6 at the top of the inner surface of the bend part 3.
Based on above-mentioned technical characteristic equipment installation will not be influenced by the way that the ship leakage runner is divided into six regions
Part directly segmentation the stage installation, improve segmentation integrality, shorten building berth construction period；And it will need in building berth
It is assembled to carry out part in such a way that process shifts to an earlier date on platform for lining for the part-structure in stage and equipment cooperation adjustment and installation
Welding enters back into building berth installation after being made as global facility, avoids the work that a large amount of parts are in bulk in building berth, while ensure that stream
The nargin of road structure and equipment cooperation debugging.
The anti-singing piece 6 include be respectively arranged at 5 periphery of stern tube shaft protection pipe both sides and with the bend part 3
The 61 and second anti-singing piece 62 of the first anti-singing piece of the top connection of inner surface, the 6 piece shape shape of anti-singing piece；Pass through
The anti-singing piece 6 is set, the part lagging edge of sine of screw propeller can be eliminated.
The connector of the connection corresponding with the bend part 3 of the vent component 4 makes the ship perpendicular to horizontal plane
Water inlet flow channel can preferably realize that transition is installed.
The present invention also provides a kind of production methods of ship leakage runner, include the following steps：
A) the firstth area of water inlet flow channel component 1, is made：The part of the steel plate shaped by several, is pasted on sectional jig
Fill welding composition；B) the secondth area of water inlet flow channel component 2, is made：Increase several gear number control moulding bed templates on sectional jig and does
It is good laterally to reinforce, the part of the steel plate shaped is mounted into welding in moulding bed template；C) bend part 3, is made：By three blocks of steel
The part that plate is processed as three pieces of pipes is welded to form, and the reinforcement of scale 31 is carried out before welding near each girth joint, with described curved
One end face of head part 3 is basal plane, and welding is carried out on mounting plate；D) stern tube shaft protection pipe 5, is made：By two pieces of steel plate strips
Two pieces of semicircle tube components by finishing forming carry out welding and are assemblied to form；E) vent component 4, is made：The vent component 4
Including sequentially connect preceding cylinder 41, in horn-like middle cylinder 42 and rear cylinder 43；The preceding cylinder 41 and rear cylinder
43 are rolled into cylindrical shape by one piece of steel plate strip respectively, and the middle cylinder 42 is rolled into horn-like by two pieces of sector components.
Be fabricated separately the ship leakage runner at each position, by making increase tooling accuracy control method and
Welding method in assembly improves the accuracy of assembly, meets technology requirement.
In the step c, the bow stern port of the bend part 3 is each provided with the construction surplus of 30mm-70mm, wherein
Preferred construction surplus is 50mm, cutting when convenient in subsequent installation to bend part and remaining mate.
In the step d, after the semicircle tube components welding, it is strong that 0.2MPa hydraulic pressure is carried out to the stern tube shaft protection pipe 5
Degree experiment, ensures the intensity of the stern tube shaft protection pipe.
In the step e, when carrying out roll forming, it is provided with wooden model in the steel bar, it is ensured that internal diameter after completing
Arbitrary cross section theory should be round.
The present invention also provides a kind of installation methods of ship leakage runner, include the following steps：Step 1: to it is described into
Annular abutment surface between the secondth area of water flow passage component 2 and the firstth area of water inlet flow channel component 1 is welded；Step 2: right
Building berth carries out first time axis irradiation, pulls out the first center line of shafting, and by first center line of shafting by the spout
Component 4 and the stern transom plate of hull carry out positioning welding；Step 3: according to 4 bow end port of the vent component and the feed water flow
Position relationship between 2 bow end port of the secondth area of road component carries out surplus mowing to the bend part 3, and by the elbow
It is welded respectively with the vent component 4 and the secondth area of water inlet flow channel component 2 the bow stern port of component 3；Step 4:
The anti-singing piece 6 described in 3 interior welds of the bend part, anti-6 upper end of singing piece are welded with the bend part 3, institute
Stating anti-6 lower end of singing piece wouldn't be handled；Step 5: carrying out second of axis irradiation, in the secondth area of water inlet flow channel, component is opened
Hole, in trepanning placement stern tube shaft protection pipe 5, the second center line of shafting obtained according to second of axis irradiation is to the stern tube shaft
Protection pipe 5 carries out alignment welding, and cutting the 6 lower end surplus of anti-singing piece makes the anti-singing piece 6 be protected with the stern tube shaft
Pipe 5 is bonded, and is welded.
Based on above-mentioned installation method, by the installation method of segmentation, need to coordinate adjustment and installation in building berth stage and equipment
Part-structure, process shift to an earlier date by way of, on platform for lining carry out part assembly welding, be made as after global facility again
It is installed into building berth, avoids the work that a large amount of parts are in bulk in building berth, while ensure that flow passage structure and equipment cooperation debugging
Nargin.
In step 2, the coaxiality deviation between the vent component 4 and first center line of shafting is less than 2mm,
Ensure precision when installation.
In step 3, the bend part 3 and the coaxiality deviation of the vent component 4 are less than 3mm, ensure described curved
The installation accuracy of head part and the vent component.
In the description of the present invention, it should be noted that term "center", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore should not be understood as pair
The limitation of the present invention.In addition, term " first ", " second ", " third " are used for description purposes only, and it should not be understood as instruction or dark
Show relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
Can also be electrical connection to be mechanical connection；It can be directly connected, can also indirectly connected through an intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
It the above is only the preferred embodiment of the present invention, it is noted that those skilled in the art are come
It says, without departing from the technical principles of the invention, several improvement and replacement can also be made, these improve and replace and also answer
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of ship leakage runner, which is characterized in that it includes along the portion of the firstth area of water inlet flow channel that water (flow) direction sequentially connects
Part, the secondth area of water inlet flow channel component, bend part and vent component in bending cylinder shape；
It further includes the stern tube shaft protection pipe for being parallel to horizontal plane and the connection that one end passes through the secondth area of water inlet flow channel component
The stern tube shaft protection pipe and the anti-singing piece at the top of the inner surface of the bend part.
2. ship leakage runner as described in claim 1, which is characterized in that the anti-singing piece is described including being respectively arranged at
The both sides of stern tube shaft protection pipe periphery and the first anti-singing piece being connect with the top of the bend part inner surface and second anti-
Singing piece, the anti-singing piece piece shape shape.
3. ship leakage runner as described in claim 1, which is characterized in that the vent component is opposite with the bend part
The connector that should be connected is perpendicular to horizontal plane.
4. a kind of production method based on the ship leakage runner described in claim 1-3, which is characterized in that including following step
Suddenly：
A) the firstth area of water inlet flow channel component, is made：The part of the steel plate shaped by several, mounts welding on sectional jig
Composition；
B) the secondth area of water inlet flow channel component, is made：Increase several gear number control moulding bed templates on sectional jig and carry out and laterally adds
By force, the part of the steel plate shaped is mounted into welding in moulding bed template；
C) bend part, is made：The part for being processed as three pieces of pipes by three blocks of steel plates is welded to form, in each girth joint before welding
Scale reinforcement is nearby carried out, using an end face of the bend part as basal plane, welding is carried out on mounting plate；
D) stern tube shaft protection pipe, is made：It is assembled that two pieces of semicircle tube components by two pieces of steel plate strips by finishing forming carry out welding
Composition；
E) vent component, is made：The vent component include the preceding cylinder sequentially connected, in horn-like middle cylinder and after
Cylinder；The preceding cylinder is rolled into cylindrical shape by one piece of steel plate strip respectively with rear cylinder, and the middle cylinder is by two pieces of sectors zero
Part is rolled into horn-like.
5. the production method of ship leakage runner as claimed in claim 4, which is characterized in that described curved in the step c
The bow stern port of head part is each provided with the construction surplus of 30mm-70mm.
6. the production method of ship leakage runner as claimed in claim 4, which is characterized in that in the step d, described half
After the welding of pipe part, 0.2MPa hydraulic pressure strength experiments are carried out to the stern tube shaft protection pipe.
7. the production method of ship leakage runner as claimed in claim 4, which is characterized in that in the step e, rolled
When molded, wooden model is provided in the steel bar.
8. a kind of installation method based on the ship leakage runner described in claim 1-4, which is characterized in that including following step
Suddenly：
Step 1: annular abutment surface between the water inlet flow channel the secondth area component and the firstth area of water inlet flow channel component into
Row welding；
Step 2: carrying out first time axis irradiation to building berth, the first center line of shafting is pulled out, and pass through first axial center
The stern transom plate of the vent component and hull is carried out positioning welding by line；
Step 3: according to the position between vent component bow end port and the secondth area of water inlet flow channel component bow end port
Relationship, to the bend part carry out surplus mowing, and by the bow stern port of the bend part respectively with the vent component
And secondth area of water inlet flow channel component is welded；
Step 4: the anti-singing piece described in the bend part interior welds, the anti-singing piece upper end and the bend part
Welding, the anti-singing piece lower end wouldn't be handled；
Step 5: carrying out second of axis irradiation, in the secondth area of water inlet flow channel, component carries out trepanning, and stern tube shaft is disposed in the trepanning
Protection pipe, the second center line of shafting obtained according to second of axis irradiation carry out alignment welding to the stern tube shaft protection pipe, and
Cutting anti-singing piece lower end surplus makes the anti-singing piece be bonded with the stern tube shaft protection pipe, and is welded.
9. the installation method of ship leakage runner as claimed in claim 8, which is characterized in that in step 2, the spout
Coaxiality deviation between component and first center line of shafting is less than 2mm.
10. the installation method of ship leakage runner as claimed in claim 8, which is characterized in that in step 3, the elbow
The coaxiality deviation of component and the vent component is less than 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477410.3A CN108609147B (en) | 2018-05-18 | 2018-05-18 | Ship water inlet flow channel and manufacturing and mounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810477410.3A CN108609147B (en) | 2018-05-18 | 2018-05-18 | Ship water inlet flow channel and manufacturing and mounting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108609147A true CN108609147A (en) | 2018-10-02 |
| CN108609147B CN108609147B (en) | 2020-01-10 |
Family
ID=63663444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810477410.3A Active CN108609147B (en) | 2018-05-18 | 2018-05-18 | Ship water inlet flow channel and manufacturing and mounting method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108609147B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268608A (en) * | 2018-10-31 | 2019-01-25 | 中船黄埔文冲船舶有限公司 | A kind of elbow and installation method of hydraulic jet propulsion system |
| CN109263841A (en) * | 2018-10-30 | 2019-01-25 | 中船黄埔文冲船舶有限公司 | A kind of hydraulic jet propulsion system and installation method |
| CN109455285A (en) * | 2018-11-09 | 2019-03-12 | 中国船舶工业集团公司第七0八研究所 | A kind of reinforcement structure for hydraulic jet propulsion system |
| CN109551176A (en) * | 2018-10-18 | 2019-04-02 | 沪东中华造船(集团)有限公司 | A kind of production method of steel runner automobile wind tunnel nozzle segment |
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| CN1911729A (en) * | 2006-09-04 | 2007-02-14 | 北京理工大学 | Supercavitation gas-liquid multi-phase water spray propeller |
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| CN105545818A (en) * | 2016-01-29 | 2016-05-04 | 扬州大学 | Chamfered square nozzle of novel water spraying propelling pump device |
| CN107735315A (en) * | 2015-05-27 | 2018-02-23 | 安德烈亚斯·德施 | Hydro-jet propulsion system and the ship with hydro-jet propulsion system |
| CN107725476A (en) * | 2017-09-27 | 2018-02-23 | 江苏科技大学海洋装备研究院 | A kind of adjustable hydraulic propeller of blade-section |
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| JPH04159193A (en) * | 1990-10-22 | 1992-06-02 | Yamaha Motor Co Ltd | Propulsion device structure for water jet pusher boat |
| CN1911729A (en) * | 2006-09-04 | 2007-02-14 | 北京理工大学 | Supercavitation gas-liquid multi-phase water spray propeller |
| CN101848834A (en) * | 2007-08-27 | 2010-09-29 | 苏尔梵高公司 | Weed-cutter for a craft propelled by a water jet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109551176A (en) * | 2018-10-18 | 2019-04-02 | 沪东中华造船(集团)有限公司 | A kind of production method of steel runner automobile wind tunnel nozzle segment |
| CN109263841A (en) * | 2018-10-30 | 2019-01-25 | 中船黄埔文冲船舶有限公司 | A kind of hydraulic jet propulsion system and installation method |
| CN109268608A (en) * | 2018-10-31 | 2019-01-25 | 中船黄埔文冲船舶有限公司 | A kind of elbow and installation method of hydraulic jet propulsion system |
| CN109268608B (en) * | 2018-10-31 | 2020-07-03 | 中船黄埔文冲船舶有限公司 | Method for installing elbow of water jet propulsion device |
| CN109455285A (en) * | 2018-11-09 | 2019-03-12 | 中国船舶工业集团公司第七0八研究所 | A kind of reinforcement structure for hydraulic jet propulsion system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108609147B (en) | 2020-01-10 |
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