CN111776183B - Shifting fork-free arc-shaped self-cleaning trash device for high-performance water jet propeller - Google Patents
Shifting fork-free arc-shaped self-cleaning trash device for high-performance water jet propeller Download PDFInfo
- Publication number
- CN111776183B CN111776183B CN202010787274.5A CN202010787274A CN111776183B CN 111776183 B CN111776183 B CN 111776183B CN 202010787274 A CN202010787274 A CN 202010787274A CN 111776183 B CN111776183 B CN 111776183B
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- China
- Prior art keywords
- trash rack
- performance
- water jet
- ship
- rack body
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Links
- 239000010813 municipal solid waste Substances 0.000 title claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000004140 cleaning Methods 0.000 title claims abstract description 13
- 238000005507 spraying Methods 0.000 claims description 9
- 239000007921 spray Substances 0.000 claims 2
- 239000000126 substance Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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
- B63H11/01—Marine propulsion by water jets having means to prevent foreign material from clogging fluid passage way
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Cleaning By Liquid Or Steam (AREA)
- Cleaning Or Clearing Of The Surface Of Open Water (AREA)
Abstract
The invention relates to the technical field of ship equipment, in particular to a fork-free arc-shaped self-cleaning trash rack device for a high-performance water jet propeller. According to the shifting fork-free arc-shaped self-cleaning trash rack device for the high-performance water jet propulsion, the opening distance of the trash rack body is smaller than tsin beta 1 of the inlet of the impeller, so that the trash rack effect is realized, and meanwhile, substances which cannot cause blockage can normally pass through, and the normal operation of the water jet propulsion is ensured; the grid bars of the trash rack body adopt an outer convex arc structure, and dirt blocked by the grid bars is flushed horizontally through bottom water flow when the high-performance ship runs, so that the dirt is directly separated from the trash rack and flushed to the rear side, the opening of the trash rack body is prevented from being blocked, and the performance of the high-performance ship is ensured.
Description
Technical Field
The invention relates to the technical field of ship equipment, in particular to a fork-free arc-shaped self-cleaning trash device for a high-performance water jet propulsion device.
Background
The water spraying propeller is arranged in a stern pipeline of a high-performance ship, realizes a propulsion function through the flow velocity difference of an inlet and an outlet of the pipeline, has the advantages of high maneuverability, good maneuverability, strong cavitation resistance, small resistance, low vibration and noise, strong shallow water navigation adaptability, high-speed propulsion efficiency and the like, and is widely welcomed in the military and civil fields such as high-speed passenger ferries, military high-performance ships and the like particularly because the rotating parts are wrapped in the pipeline. In recent years, along with pollution in wading fields such as rivers, lakes and seas, more and more sundries appear in water, so that impellers of the water jet propeller are often blocked by sundries winding. Therefore, the front part of the water inlet channel of the water jet propeller is provided with the trash rack to realize the trash rack function, which becomes a necessary device for the high-performance ship provided with the water jet propeller. However, because the classical trash rack is flat, sundries can not enter the impeller area, but still can be accumulated on the trash rack, so that the water flow resistance is increased, the flow is reduced, and the performance of the water jet propeller is seriously affected. In order to solve the problem, besides cleaning the trash rack when the ship is stopped/the machine is stopped, an additional shifting fork device is also arranged to realize the real-time shifting fork cleaning function. But the real-time shifting fork device increases the complexity of the device and severely reduces the operation reliability.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problems in the prior art, an improved fork-free arc-shaped self-cleaning trash device for a high-performance water jet propeller is provided, and the problems in the prior art are solved.
The technical scheme adopted for solving the technical problems is as follows: a fork-free arc-shaped self-cleaning trash rack device for a high-performance water jet propeller comprises a high-performance ship, a water jet propeller arranged in the high-performance ship and a trash rack body, wherein a water inlet and spraying runner for installing the water jet propeller is formed in the bottom of the high-performance ship, and the trash rack body consists of a grid bar with an arc-shaped structure protruding downwards, a grid frame and bolts for fixedly installing the grid frame at the bottom of the ship.
Further, in order to cooperate with the trash, the distance between the grid bars 4 of the trash rack body is smaller than or equal to tsin beta 1 of the impeller inlet in the water jet propeller 2.
Further, for convenience of processing, the central angle of the grid bar is 30-35 degrees.
The beneficial effects of the invention are as follows:
(1) According to the shifting fork-free arc-shaped self-cleaning trash rack device for the high-performance water jet propeller, the opening distance of the trash rack body is smaller than tsin beta 1 of the inlet of the impeller, so that the trash rack can normally pass through substances which cannot cause blockage while the trash rack is realized, and the normal operation of the water jet propeller is ensured;
(2) The grid bars of the trash rack body adopt an outer convex arc structure, and dirt blocked by the grid bars is flushed horizontally through bottom water flow when the high-performance ship runs, so that the dirt is directly separated from the trash rack and flushed to the rear side, the opening of the trash rack body is prevented from being blocked, and the performance of the high-performance ship is ensured.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a left side view of the present invention.
Fig. 3 is a schematic diagram of the general assembly of the present invention.
In the figure, a high-performance ship, a water spraying propeller, a water inlet and spraying runner, a grid frame and bolts are adopted, wherein the high-performance ship is shown as the figure 1, the water spraying propeller is shown as the figure 3, the grid bars are shown as the figure 5, and the grid frame is shown as the figure 6.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
The shifting fork-free arc-shaped self-cleaning trash rack device for the high-performance water jet propeller shown in fig. 1 and 2 comprises a high-performance ship 1, a water jet propeller 2 arranged in the high-performance ship 1 and a trash rack body, wherein a water inlet and spraying runner 3 for installing the water jet propeller 2 is formed in the bottom of the high-performance ship 1, and the trash rack body consists of arc-shaped grid bars 4, grid frames 5 which are downwards protruded and bolts 6 for fixedly installing the grid frames 5 at the bottom of the ship.
As shown in fig. 2 and 3, in order to match with the dirt blocking, the distance between the grid bars 4 of the dirt blocking grid body is less than or equal to tsin beta 1 of an impeller inlet in the water jet propeller 2, wherein t is the grid distance at the rim of the impeller inlet, beta 1 is the blade placing angle at the rim of the impeller inlet, further, in order to facilitate processing, the central angle of the grid bars 4 is 30-35 degrees, and the curvature radius is selected as an integer which is more convenient to process in engineering.
(1) When the impeller diameter of the water jet propeller 2 is phi 240, the design of the trash rack body is as follows: the impeller blade number is 4, and the impeller blade inlet setting angle is 10.55 degrees. Therefore, the distance between the grating bars of the trash rack is less than or equal to tsin β 1 =240 pi sin10.55 degrees/4=34.5 mm, the value is 30mm, and the central angle of the grating is 33.25 degrees;
(2) When the impeller diameter of the water jet propeller is phi 285, the design of the trash rack body is as follows: the impeller blade number is 4, and the impeller blade inlet setting angle is 17.03 degrees. Therefore, the distance between the grating bars of the trash rack is smaller than or equal to tsin β 1 =285pi sin17.03 degrees/4=65.6 mm, the value is 42mm, and the central angle of the grating is 33.01 degrees;
(3) When the impeller diameter of the water jet propeller is phi 355, the design of the trash rack body is as follows: the impeller has 5 blades and an inlet setting angle of 28.88 degrees. Therefore, the distance between the grating bars of the trash rack is smaller than or equal to tsin β 1 =35pi sin28.88 degrees/5=107.7mm, the value is 75mm, and the central angle of the grating is 33.36 degrees.
The beneficial effects of the invention are as follows:
(1) According to the shifting fork-free arc-shaped self-cleaning trash rack device for the high-performance water jet propeller, the opening distance of the trash rack body is smaller than tsin beta 1 of the inlet of the impeller, so that the trash rack can normally pass through substances which cannot cause blockage while the trash rack is realized, and the normal operation of the water jet propeller is ensured;
(2) The grid bars of the trash rack body adopt an outer convex arc structure, and dirt blocked by the grid bars is flushed horizontally through bottom water flow when the high-performance ship runs, so that the dirt is directly separated from the trash rack and flushed to the rear side, the opening of the trash rack body is prevented from being blocked, and the performance of the high-performance ship is ensured.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (1)
1. The utility model provides a high performance water spray propulsion is with exempting from shift fork arc self-cleaning trash rack device, includes high performance boats and ships (1), installs at inside water spray propulsion ware (2) and the trash rack body of high performance boats and ships (1), characterized by: the bottom of the high-performance ship (1) is provided with a water inlet and spraying runner (3) for installing a water spraying propeller (2), and the trash rack body consists of arc-shaped structure grid bars (4) which are downwards protruded, a grid frame (5) and bolts (6) for fixedly installing the grid frame (5) at the bottom of the ship;
The distance between the grid bars (4) of the trash rack body is smaller than or equal to tsin beta 1 of an impeller inlet in the water spraying propeller (2);
the central angle of the grid bars (4) is 30-35 degrees;
t is the grid distance at the inlet rim of the impeller, and beta 1 is the blade placing angle at the inlet rim of the impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010787274.5A CN111776183B (en) | 2020-08-07 | 2020-08-07 | Shifting fork-free arc-shaped self-cleaning trash device for high-performance water jet propeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010787274.5A CN111776183B (en) | 2020-08-07 | 2020-08-07 | Shifting fork-free arc-shaped self-cleaning trash device for high-performance water jet propeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111776183A CN111776183A (en) | 2020-10-16 |
| CN111776183B true CN111776183B (en) | 2024-06-04 |
Family
ID=72765997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010787274.5A Active CN111776183B (en) | 2020-08-07 | 2020-08-07 | Shifting fork-free arc-shaped self-cleaning trash device for high-performance water jet propeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111776183B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5989083A (en) * | 1995-04-28 | 1999-11-23 | Ishigaki Company Limited | Water jet propulsion device for vessels |
| CN200992297Y (en) * | 2006-12-22 | 2007-12-19 | 中国舰船研究设计中心 | Foreign removing device for ship water-jetting propelling system |
| CN103600824A (en) * | 2013-11-20 | 2014-02-26 | 哈尔滨工程大学 | Ship propeller |
| CN204507234U (en) * | 2015-03-09 | 2015-07-29 | 扬州大学 | A kind of built-in streamline type grate for waterjet propulsion pumping plant |
| CN105966586A (en) * | 2016-05-19 | 2016-09-28 | 武汉船用机械有限责任公司 | Impurity removing mechanism for water spraying propelling device |
| CN108791790A (en) * | 2018-06-29 | 2018-11-13 | 珠海云洲智能科技有限公司 | Trash rack and its spray pump and ship |
| CN212530028U (en) * | 2020-08-07 | 2021-02-12 | 江苏凯邦推进科技有限公司 | Shifting fork-free arc-shaped self-cleaning trash blocking device for high-performance water jet propeller |
-
2020
- 2020-08-07 CN CN202010787274.5A patent/CN111776183B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5989083A (en) * | 1995-04-28 | 1999-11-23 | Ishigaki Company Limited | Water jet propulsion device for vessels |
| CN200992297Y (en) * | 2006-12-22 | 2007-12-19 | 中国舰船研究设计中心 | Foreign removing device for ship water-jetting propelling system |
| CN103600824A (en) * | 2013-11-20 | 2014-02-26 | 哈尔滨工程大学 | Ship propeller |
| CN204507234U (en) * | 2015-03-09 | 2015-07-29 | 扬州大学 | A kind of built-in streamline type grate for waterjet propulsion pumping plant |
| CN105966586A (en) * | 2016-05-19 | 2016-09-28 | 武汉船用机械有限责任公司 | Impurity removing mechanism for water spraying propelling device |
| CN108791790A (en) * | 2018-06-29 | 2018-11-13 | 珠海云洲智能科技有限公司 | Trash rack and its spray pump and ship |
| CN212530028U (en) * | 2020-08-07 | 2021-02-12 | 江苏凯邦推进科技有限公司 | Shifting fork-free arc-shaped self-cleaning trash blocking device for high-performance water jet propeller |
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| Publication number | Publication date |
|---|---|
| CN111776183A (en) | 2020-10-16 |
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