CN115042936A - Split type runner for immersed water jet propulsion device and manufacturing method thereof - Google Patents
Split type runner for immersed water jet propulsion device and manufacturing method thereof Download PDFInfo
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- CN115042936A CN115042936A CN202210814757.9A CN202210814757A CN115042936A CN 115042936 A CN115042936 A CN 115042936A CN 202210814757 A CN202210814757 A CN 202210814757A CN 115042936 A CN115042936 A CN 115042936A
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- hull
- jet propulsion
- water jet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
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- 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
- B63B71/10—Designing vessels; Predicting their performance using computer simulation, e.g. finite element method [FEM] or computational fluid dynamics [CFD]
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- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T70/00—Maritime or waterways transport
- Y02T70/10—Measures concerning design or construction of watercraft hulls
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- Ocean & Marine Engineering (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention relates to a split runner for an immersed water jet propulsion device and a manufacturing method thereof, belonging to the technical field of ship design and manufacture. According to the invention, through three-dimensional modeling, an immersed water jet propulsion inlet channel which is highly coupled with a ship body is divided into two parts, namely a ship body part and an external ship body part; respectively processing the hull part and the outer hull part; and connecting the processed hull part with the hull outer part to complete the manufacture of the split runner of the immersed water jet propulsion device. The invention obviously reduces the difficulty of integral processing, realizes the high-precision processing and forming of the flow channel, simplifies the process, ensures the integral hydrodynamic performance of the ship and meets the strength requirement.
Description
Technical Field
The invention relates to a split runner for an immersed water jet propulsion device and a manufacturing method thereof, belonging to the technical field of ship design and manufacture.
Background
The typical water jet propulsion device in the prior art is of a built-in type, namely, an inlet channel and a propulsion pump which are to be used for water jet propulsion are arranged in a tail cabin of a ship body, and the inlet channel and the ship body form a whole and are integrally formed. The submerged water jet propulsion unit, also known as an external water jet propulsion unit, has a propulsion pump and an inlet channel partly enveloped in the hull and coupled to the hull from hydrodynamic force to structural height, as shown in fig. 1. One part of the inlet channel is arranged in the ship body, and the other part of the inlet channel is exposed out of the ship body and is of a complex space tubular structure; the machining and manufacturing of the part need to meet high precision, and the whole machining is difficult in the process level of the prior art. Therefore, the technical problem of how to manufacture the inlet channel for the submerged water jet propulsion needs to be solved in the technical field.
Disclosure of Invention
The invention aims to solve the technical problem of how to machine and manufacture an inlet channel for submerged water jet propulsion.
In order to solve the above problems, the present invention provides a method for manufacturing a split runner of an immersion type water jet propulsion device, comprising the following steps:
step 1: dividing an immersed water jet propulsion inlet channel which is highly coupled with a ship body into two parts, namely a ship body part and an external ship body part, through three-dimensional modeling;
step 2: respectively processing the hull part and the outer hull part;
and step 3: and connecting the processed hull part with the hull outer part to finish the manufacture of the split type flow channel of the immersed water jet propulsion device.
Preferably, in the step 1, the submerged water jet propulsion inlet channel which is highly coupled with the ship body is divided into the ship body part and the ship body outer part, and the ship bottom plate is used as an interface.
Preferably, the hull part in step 1 comprises the hull itself and a part of the inlet flow channel enclosed inside the cabin.
Preferably, the step 2 is to process the hull part, and includes integrally forming the flow channel part enveloped in the hull with the hull.
Preferably, the step 3 is to connect the finished hull part and the hull external part by a countersunk screw.
Preferably, the bottom board of the hull part is provided with a plurality of threaded blind holes.
Preferably, the threaded blind holes are distributed along the water jet propulsion axis of the flow channel in a central symmetry manner by taking the intersection line of the front edge of the flow channel and the bottom plate of the ship as a reference line.
Preferably, a counter bore is arranged at the outer part of the ship body, and the counter bore corresponds to a threaded blind hole arranged on the bottom plate of the ship.
Preferably, a countersunk screw is arranged between the counter bore and the threaded blind hole; epoxy cement is arranged in the counter bore.
The invention provides a split type flow channel for an immersed water jet propulsion device, which is highly coupled with a ship body and is divided into a ship body part and an external ship body part by taking a ship bottom plate as an interface; the hull part is a part of inlet flow channel enveloped in the cabin, and the outside of the hull is divided into another part of inlet flow channel exposed out of the hull; the hull part and the outer hull part of the flow channel are spliced to form an integral flow channel
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, through the split runner structure, the runner which is integrally processed and formed in the prior art and the immersed water jet propulsion hull which is deeply coupled with the hull are divided into two separately processed parts, and the two separately processed parts are connected through the high-strength bolt, so that the difficulty of integrated processing can be obviously reduced, high-precision processing and forming can be realized, the process is simplified, the integral hydrodynamic performance of the ship is ensured, and the strength requirement is met.
The immersed water jet propulsion ship model split runner structure can well solve the technical problem that the immersed water jet propulsion test ship model is difficult to integrally process, and the interface is reserved, so that the flexibility and convenience of the follow-up runner scheme which can be changed are improved.
Drawings
FIG. 1 is a schematic and partially enlarged view of an immersed water jet propulsion test ship model;
FIG. 2 is a schematic view and a partially enlarged view of the processing and assembling of the immersed water jet propulsion test ship model;
FIG. 3 is a schematic and partially enlarged view of the upper half of the hull;
FIG. 4 is a schematic view of the lower half of the flow path;
FIG. 5 is a partial cross-sectional view of the upper hull half and the lower runner half after assembly;
reference numerals: 1. the upper half part of the ship body; 2. a lower half of the flow passage; 3. a countersunk head screw; 4. epoxy daub; 5. a bottom board of the ship; 6. a channel; 7. a water jet propulsion axis.
Detailed Description
In order to make the invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings:
as shown in fig. 1-5, the technical solution adopted by the present invention is to provide a method for manufacturing a split runner for a submerged water jet propulsion device, comprising the following steps:
step 1: dividing an immersed water jet propulsion inlet channel which is highly coupled with a ship body into two parts, namely a ship body part and an external ship body part, through three-dimensional modeling;
step 2: respectively processing the hull part and the outer hull part;
and step 3: and connecting the processed hull part with the hull outer part to finish the manufacture of the split type flow channel of the immersed water jet propulsion device.
In the step 1, the submerged water jet propulsion inlet channel which is highly coupled with the ship body is divided into the ship body part and the ship body outer part, and the ship bottom plate is used as an interface.
The hull part in step 1 above comprises the hull itself and a part of the inlet channel enclosed inside the hold.
And 2, processing the hull part in the step 2, wherein the step comprises the step of integrally processing and molding the flow channel part enveloped in the hull and the hull.
And (3) connecting the processed hull part and the hull outer part through a sunk screw.
A plurality of threaded blind holes are formed in a bottom plate of the hull part; the threaded blind holes are distributed along the water jet propulsion axis of the flow channel in a centrosymmetric manner by taking the intersection line of the front edge of the flow channel and the bottom plate of the ship as a datum line. The outer part of the ship body is provided with a counter bore, and the counter bore corresponds to a threaded blind hole arranged on the bottom plate of the ship. A countersunk screw is arranged between the counter bore and the threaded blind hole; epoxy daub is arranged in the counter bore.
The invention provides a split type flow channel for an immersed water jet propulsion device, which is highly coupled with a ship body and is divided into a ship body part and an outer ship body part by taking a ship bottom plate as an interface; the hull part is a part of inlet flow channel enveloped in the cabin, and the outside of the hull is divided into another part of inlet flow channel exposed out of the hull; the hull part and the hull outer part of the flow channel are spliced to form an integral flow channel.
Aiming at the characteristics of an immersed water jet propulsion inlet channel, the invention provides a split structure, a bottom plate of a ship body is taken as an interface, the part enveloped in the ship body is integrally formed with the ship body, and the curved surface of the ship body is processed by five-axis numerical control; the part outside the ship body is separately processed in a numerical control way, and the two parts are fastened together after positioning. The technical problem of high precision forming difficulty is solved, and the process is simple.
The submerged water jet propulsion inlet channel is deeply coupled with the ship body, and the line type is complex; if the ship body is integrally processed, the processing space is narrow, the process is complex, and high-precision forming is difficult. Through analyzing its structural feature to the bottom plate of a ship is the interface, divide into the two parts that all can numerical control process with the inlet flow way, then fasten together, has solved the integrated processing shaping degree of difficulty and has big, is difficult to fashioned problem.
Examples
In the three-dimensional modeling, the bottom plate of the ship is used as an interface, and the submerged water jet propulsion inlet flow channel which is highly coupled with the ship body is divided into two parts, namely an upper half part 1 of the ship body and an outer part (a lower half part 2 of the flow channel) of the ship body. Wherein, the upper half part 1 of the ship body comprises the ship body and a part of inlet flow channels (channels 6) enveloped in the cabin; the outer part of the ship body is the part of the inlet flow channel exposed out of the ship body. Therefore, narrow and closed space does not exist in the two parts, and the machine tool is convenient to feed. The flow channel part (channel 6) enveloped in the hull is integrally formed with the hull, and the curved surface is processed by five-axis numerical control. The profile of the outer part of the ship body is complex, the influence on the hydrodynamic performance of the ship is large, high machining precision and machining quality are required, and the ship body can be formed through independent numerical control machining.
After the upper hull half part 1 and the lower runner half part 2 are processed and molded, the upper hull half part and the lower runner half part are fastened and connected by using countersunk screws 3. Referring to fig. 2, a plurality of threaded blind holes are drilled on the bottom board 5 of the hull part of the upper half part 1 of the hull according to the size and strength requirements of the hull, the threaded holes are distributed along the center of the water jet propulsion axis 7 in a central symmetry manner, and the intersection line of the front edge of the flow channel and the bottom board 5 can be used as a datum line. Correspondingly, the outboard part of the lower flow passage half 2 is countersunk at the corresponding position of the threaded blind hole with the same datum line. The upper half part 1 of the ship body and the lower half part 2 of the flow passage are firmly fastened together by using countersunk screws 3, and the screw holes are filled with epoxy cement 4, so that the outer curved surface is smooth and smooth.
The invention provides a new configuration of a split runner, aiming at the problem that an immersed water jet propulsion inlet runner is difficult to process. A high speed ship equipped with a double submerged waterjet propeller is exemplified as shown in fig. 1. During three-dimensional modeling, the bottom board 5 is taken as an interface, and the submerged water jet propulsion inlet channel which is highly coupled with the ship body is divided into two parts, wherein one part is the upper half part 1 of the ship body, as shown in fig. 3; the other part is the lower half of the flow channel 2 as shown in fig. 4. Wherein, the upper half part 1 of the ship body comprises the ship body and a part of inlet flow channels (channels 6) enveloped in the cabin; the lower half part 2 of the flow passage is the part of the inlet flow passage exposed out of the ship body. Therefore, narrow and closed space does not exist in the two parts, and the machine tool is convenient to feed. The flow channel part (channel 6) enveloped in the hull is integrally formed with the hull, and the curved surface is processed by five-axis numerical control. The profile of the outer part of the ship body is complex, the influence on the hydrodynamic performance of the ship is large, and high machining precision and machining quality are required, so that the ship body can be formed by independent numerical control machining according to three-dimensional geometry.
As shown in fig. 2-5, after the hull upper half 1 and the runner lower half 2 are respectively formed, countersunk screws 3 are needed for fastening. A plurality of threaded blind holes are drilled in the bottom board 5 of the hull part of the upper half part 1 of the hull according to the size and strength requirements of the hull, the threaded holes are distributed in a central symmetry mode along the water jet propulsion axis 7, and the intersection line of the front edge of the flow channel and the bottom board 5 can be used as a datum line. Correspondingly, the outboard part of the lower runner half 2 is countersunk at the corresponding position of the same datum line. As shown in fig. 2-5, the two parts are firmly fastened together by countersunk screws 3, and the screw holes are filled with epoxy mastic 4 to smooth the outer curved surface.
According to the invention, through the split runner structure, the integrated processing difficulty of the immersed water jet propulsion ship can be obviously reduced, high-precision processing and forming are realized, the process is simplified, the integral hydrodynamic performance of the ship is ensured, and the strength requirement is also met.
While the invention has been described with respect to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. Those skilled in the art can make various changes, modifications and equivalent arrangements, which are equivalent to the embodiments of the present invention, without departing from the spirit and scope of the present invention, and which may be made by utilizing the techniques disclosed above; meanwhile, any changes, modifications and variations of the above-described embodiments, which are equivalent to those of the technical spirit of the present invention, are within the scope of the technical solution of the present invention.
Claims (10)
1. A manufacturing method of a split runner for an immersed water jet propulsion device is characterized by comprising the following steps:
step 1: dividing an immersed water jet propulsion inlet channel which is highly coupled with a ship body into two parts, namely a ship body part and an external ship body part, through three-dimensional modeling;
step 2: respectively processing the hull part and the outer hull part;
and step 3: and connecting the processed hull part with the hull outer part to finish the manufacture of the split type flow channel of the immersed water jet propulsion device.
2. The method of claim 1, wherein the step 1 of dividing the submerged waterjet inlet channel into the hull portion and the extra-hull portion is performed by using a bottom plate as an interface.
3. The method for manufacturing a split runner for a submerged jet propulsion device as claimed in claim 1, wherein the hull part in step 1 comprises the hull itself and a part of the inlet runner enclosed inside the cabin.
4. The manufacturing method of the split runner for the submerged water jet propulsion device as claimed in claim 1, wherein the step 2 of machining the hull part comprises integrally forming the runner part enveloped in the hull with the hull.
5. The manufacturing method of the split runner for the submerged water jet propulsion device as claimed in claim 1, wherein the step 3 of connecting the finished hull part and the hull outer part is performed by countersunk head screws.
6. The method of claim 5, wherein the bottom plate of the hull portion is provided with a plurality of blind threaded holes.
7. The manufacturing method of the split type flow channel for the submerged water jet propulsion device according to claim 6, wherein the threaded blind holes are distributed along the water jet propulsion axis of the flow channel in a central symmetry manner by taking the intersection line of the front edge of the flow channel and the bottom plate as a reference line.
8. The manufacturing method of the split runner for the submerged water jet propulsion device as claimed in claim 7, wherein the outer part of the hull is provided with a counter bore corresponding to a threaded blind hole formed in the bottom plate of the ship.
9. The manufacturing method of the split-type flow passage for the submerged water jet propulsion device as claimed in claim 8, wherein a countersunk head screw is arranged between the countersunk hole and the threaded blind hole; epoxy cement is arranged in the counter bore.
10. A split runner for a submerged jet propulsion unit, characterised in that the runner is highly coupled to a hull and divided into a hull part and an extra-hull part by a bottom board; the hull part is a part of inlet channels enveloped in the cabin, and the outside of the hull is divided into the other part of inlet channels exposed out of the hull; the hull part and the hull outer part of the flow channel are spliced to form an integral flow channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210814757.9A CN115042936A (en) | 2022-07-12 | 2022-07-12 | Split type runner for immersed water jet propulsion device and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210814757.9A CN115042936A (en) | 2022-07-12 | 2022-07-12 | Split type runner for immersed water jet propulsion device and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115042936A true CN115042936A (en) | 2022-09-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210814757.9A Pending CN115042936A (en) | 2022-07-12 | 2022-07-12 | Split type runner for immersed water jet propulsion device and manufacturing method thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1655984A (en) * | 2002-05-29 | 2005-08-17 | 西门子公司 | High-speed sea-going ship comprising a double hull and a waterjet drive |
| US20060073746A1 (en) * | 2004-10-01 | 2006-04-06 | Roos Paul W | Waterjet-propelled marine vessel with simplified intake duct |
| KR20160086565A (en) * | 2015-01-12 | 2016-07-20 | 최재철 | Ship Reduced Resistance against Thrust |
| CN108698676A (en) * | 2015-10-07 | 2018-10-23 | 博德-杰特全球有限公司 | Ship and transport thus for being used on water body and control system |
-
2022
- 2022-07-12 CN CN202210814757.9A patent/CN115042936A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1655984A (en) * | 2002-05-29 | 2005-08-17 | 西门子公司 | High-speed sea-going ship comprising a double hull and a waterjet drive |
| US20060073746A1 (en) * | 2004-10-01 | 2006-04-06 | Roos Paul W | Waterjet-propelled marine vessel with simplified intake duct |
| KR20160086565A (en) * | 2015-01-12 | 2016-07-20 | 최재철 | Ship Reduced Resistance against Thrust |
| CN108698676A (en) * | 2015-10-07 | 2018-10-23 | 博德-杰特全球有限公司 | Ship and transport thus for being used on water body and control system |
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