CN111907675A - Short-time high-thrust water jet propulsion pump device externally connected with jet flow and using method thereof - Google Patents
Short-time high-thrust water jet propulsion pump device externally connected with jet flow and using method thereof Download PDFInfo
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- CN111907675A CN111907675A CN202010781353.5A CN202010781353A CN111907675A CN 111907675 A CN111907675 A CN 111907675A CN 202010781353 A CN202010781353 A CN 202010781353A CN 111907675 A CN111907675 A CN 111907675A
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- jet propulsion
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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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- 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
- B63H11/08—Marine propulsion by water jets the propulsive medium being ambient water by means of pumps of rotary type
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- Chemical & Material Sciences (AREA)
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- Combustion & Propulsion (AREA)
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- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a short-time high-thrust water jet propulsion pump device externally connected with jet flow and a using method thereof, and the short-time high-thrust water jet propulsion pump device comprises a short-time high-thrust water jet propulsion pump device arranged on a single-nozzle water jet propulsion pump device, wherein the short-time high-thrust water jet propulsion pump device comprises a centrifugal pump, and the centrifugal pump is provided with a centrifugal pump water outlet and a centrifugal pump water inlet; a reducer is externally connected to the water outlet of the centrifugal pump, one end of the reducer is connected with the water outlet of the centrifugal pump, the other end of the reducer is connected with a horizontal pipe, and the diameter of the reducer is gradually reduced from the end, connected with the water outlet of the centrifugal pump, of the reducer to the end connected with the horizontal pipe; one end of the equal-diameter bent pipe is connected with the equal-diameter bent pipe, and the other end of the equal-diameter bent pipe penetrates through any guide vane to enter the impeller and extends to the guide vane outlet water guide cone through the impeller; according to the short-time high-thrust water jet propulsion pump device with the externally connected jet flow, the flow and the flow speed of the nozzle of the original water jet propulsion pump device are increased, the short-time thrust of the original pump device is increased, and the instantaneous high-speed navigation of a ship is realized.
Description
Technical Field
The invention relates to a short-time high-thrust water jet propulsion pump device externally connected with jet flow and a using method thereof, belonging to the field of ship engineering.
Background
The water jet propulsion ship is different from a propeller propulsion ship, and has the advantages of simple transmission mechanism, low underwater noise, good maneuverability and the like. However, due to social development requirements and improvement of living standards of people, the research design of the existing water jet propulsion pump device in the aspects of speed, efficiency, applicability and the like has many defects, the performance of the existing water jet propulsion pump device still needs to be further improved, and the existing technology cannot realize large thrust and short-time increase of ship speed particularly during starting, running off and instantaneous acceleration.
Disclosure of Invention
The invention aims to solve the existing problems and provides a short-time high-thrust water jet propulsion pump device externally connected with jet flow and a using method thereof.
The object of the invention is achieved in that,
a short-time high-thrust water jet propulsion pump device externally connected with jet flow comprises a short-time high-thrust water jet propulsion pump device arranged on a single-nozzle water jet propulsion pump device, wherein the short-time high-thrust water jet propulsion pump device comprises a centrifugal pump, and a centrifugal pump water outlet and a centrifugal pump water inlet are arranged on the centrifugal pump; the method is characterized in that:
the single-nozzle water jet propulsion pump device comprises a motor and a water jet propulsion pump body, wherein a water inlet is formed in one end of the water jet propulsion pump body, a nozzle is formed in the other end of the water jet propulsion pump body, the water inlet, the water jet propulsion pump body and the nozzle are sequentially communicated, a power output shaft of the motor extends into the water jet propulsion pump body, and a plurality of blades are fixed at one end, arranged in the water jet propulsion pump body, of the power output shaft of the motor; an impeller is arranged in the water jet propulsion pump body, a plurality of guide vanes are arranged on the impeller, the impeller is fixed in the water jet propulsion pump body, gaps are reserved between the impeller and the nozzle, gaps are reserved between the impeller and the plurality of vanes, and a guide vane outlet water guide cone is arranged at one end of the impeller, close to the nozzle; when the motor is started, the power output shaft of the motor rotates to drive the blades to rotate, and water flows in from the water inlet and is sprayed out through the water inlet, the water spray propulsion pump body and the nozzle in sequence;
a reducer is externally connected to the water outlet of the centrifugal pump, one end of the reducer is connected with the water outlet of the centrifugal pump, the other end of the reducer is connected with a horizontal pipe, and the diameter of the reducer is gradually reduced from the end, connected with the water outlet of the centrifugal pump, of the reducer to the end connected with the horizontal pipe;
one end of the horizontal pipe is connected with the reducing pipe, and the other end of the horizontal pipe is connected with the equal-diameter bent pipe; one end of the equal-diameter bent pipe is connected with the horizontal pipe, and the other end of the equal-diameter bent pipe is connected with the equal-diameter inclined straight pipe; one end of the equal-diameter inclined straight pipe is connected with the equal-diameter bent pipe, and the other end of the equal-diameter inclined straight pipe is connected with the equal-diameter bent pipe;
the water outlet of the centrifugal pump, the reducing pipe, the horizontal pipe, the equal-diameter bent pipe, the equal-diameter inclined straight pipe and the equal-diameter bent pipe are sequentially communicated and connected;
one end of the equal-diameter elbow is connected with the equal-diameter elbow, the other end of the equal-diameter elbow penetrates through any guide vane to enter the impeller and extend to the guide vane outlet water guide cone through the impeller, and gaps between the equal-diameter elbow and the impeller and between the equal-diameter elbow and the nozzle are communicated.
The equal-diameter bent pipe is a 45-degree equal-diameter bent pipe.
The diameter of the water outlet of the centrifugal pump is 0.4 times of the diameter of the nozzle of the single-nozzle water jet propulsion pump device;
the diameter of the horizontal pipe is 0.1 time of the diameter of the nozzle of the single-nozzle water jet propulsion pump device;
the thickness of the guide vane is 0.12 times of the diameter of the nozzle of the single-nozzle water jet propulsion pump device.
A method for using a short-time high-thrust water jet propulsion pump device externally connected with jet flow is characterized by comprising the following steps:
under normal conditions, starting the single-nozzle water jet propulsion pump device, and sucking water into the single-nozzle water jet propulsion pump device and spraying the water out of a nozzle of the single-nozzle water jet propulsion pump device;
when thrust needs to be increased for a short time, the centrifugal pump is started, water enters the centrifugal pump from a water inlet of the centrifugal pump, flows to a nozzle of the single-nozzle water jet propulsion pump device through a reducing pipe, a horizontal pipe, an equal-diameter bent pipe, an equal-diameter inclined straight pipe and an equal-diameter bent pipe in sequence from a water outlet of the centrifugal pump, and is sprayed out through the nozzle, so that the thrust is increased.
The invention has reasonable structure and advanced and scientific method, and through the invention, the technical problem that the thrust provided by the original water jet propulsion pump device can not be increased in a short time is mainly solved, the instantaneous thrust of the whole device is improved, and the short-time navigational speed of the ship is increased. The core purpose of the patent is to design and invent a short-time high-thrust water jet propulsion pump device externally connected with jet flow. A jet-flow water jet propulsion pump device with short time and large thrust is characterized in that a reducing pipe is externally connected from a water outlet (the diameter is 0.4 times of the diameter of a nozzle) of a centrifugal pump, a horizontal pipe (the diameter is 0.1 times of the diameter of the nozzle) is connected with the reducing pipe, an equal-diameter bent pipe which is 45 degrees with the horizontal pipe is connected with the reducing pipe, an equal-diameter inclined straight pipe is connected with the reducing pipe, the inclined straight pipe penetrates through one of guide vanes to enter the impeller, and the equal-diameter bent pipe is connected with the reducing pipe to spray water flow from a guide vane outlet water guide cone, so that the. The thickness of the guide vane passing through the inclined straight pipe is 1.2 times of the diameter of the nozzle (the thickness can be adjusted according to actual conditions), and the shape of the guide vane is similar to that of other guide vanes. Water is sucked from a ship body through a small centrifugal pump of auxiliary equipment, water flows pass through a water outlet of the centrifugal pump, a reducing pipe, a horizontal pipe, an equal-diameter bent pipe, an equal-diameter inclined straight pipe and an equal-diameter bent pipe, water flows are sprayed out from a guide vane outlet water guide cone and are combined with water flows of an original single-nozzle water jet propulsion pump device, the flow and the flow speed of a nozzle of the original water jet propulsion pump device are increased, and the sailing requirement of short-time large thrust of a ship is met.
The working principle of the device is as follows: ideal thrust T without taking into account losses everywhereiShould equal the increment of momentum per unit time: t isi＝ρQ(Vi-V0). The device increases the flow and the flow speed sprayed out from the last nozzle, thereby improving the short-time thrust and realizing the instantaneous high-speed navigation of the ship.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of another embodiment of the present invention.
FIG. 3 is a schematic view of another embodiment of the present invention.
In the figure: 1 centrifugal pump water outlet, 2 reducing pipe, 3 horizontal pipe, 4 equal diameter bent pipe, 5 equal diameter inclined straight pipe, 6 guide vane, 7 impeller, 8 equal diameter bent pipe, 9 guide vane outlet guide cone, 10 motor, 11 vane.
Detailed Description
The invention is further described with reference to the accompanying drawings and the description thereof.
A short-time high-thrust water jet propulsion pump device externally connected with jet flow comprises a short-time high-thrust water jet propulsion pump device arranged on a single-nozzle water jet propulsion pump device, wherein the short-time high-thrust water jet propulsion pump device comprises a centrifugal pump, and a centrifugal pump water outlet 1 and a centrifugal pump water inlet are arranged on the centrifugal pump; the single-nozzle water jet propulsion pump device comprises a motor 10 and a water jet propulsion pump body, wherein a water inlet is formed in one end of the water jet propulsion pump body, a nozzle is formed in the other end of the water jet propulsion pump body, the water inlet, the water jet propulsion pump body and the nozzle are sequentially communicated, a power output shaft of the motor extends into the water jet propulsion pump body, and a plurality of blades 11 are fixed at one end, arranged in the water jet propulsion pump body, of the power output shaft of the motor; an impeller 7 is arranged in the water jet propulsion pump body, a plurality of guide vanes 6 are arranged on the impeller 7, the impeller 7 is fixed in the water jet propulsion pump body, a gap is reserved between the impeller 7 and the nozzle, a gap is reserved between the impeller 7 and the plurality of vanes 11, and a guide vane outlet water guide cone 9 is arranged at one end of the impeller 7 close to the nozzle; when the motor 10 is started, the power output shaft of the motor rotates to drive the blades to rotate, and water flows in from the water inlet and is sprayed out through the water inlet, the water spraying propulsion pump body and the nozzle in sequence.
A reducer 2 is externally connected to the water outlet 1 of the centrifugal pump, one end of the reducer 2 is connected with the water outlet 1 of the centrifugal pump, the other end of the reducer is connected with a horizontal pipe 3, and the pipe diameter of the reducer 2 is gradually reduced from the end, connected with the water outlet 1 of the centrifugal pump, of the reducer 2 to the end connected with the horizontal pipe 3; one end of the horizontal pipe 3 is connected with the reducing pipe 2, and the other end is connected with the equal-diameter bent pipe 4; one end of the equal-diameter bent pipe 4 is connected with the horizontal pipe 3, and the other end is connected with the equal-diameter inclined straight pipe 5; one end of the equal-diameter inclined straight pipe 5 is connected with the equal-diameter bent pipe 4, and the other end of the equal-diameter inclined straight pipe is connected with the equal-diameter bent pipe 8; the water outlet 1 of the centrifugal pump, the reducing pipe 2, the horizontal pipe 3, the equal-diameter bent pipe 4, the equal-diameter inclined straight pipe 5 and the equal-diameter bent pipe 8 are sequentially communicated and connected; one end of the equal-diameter elbow 8 is connected with the equal-diameter elbow 8, the other end of the equal-diameter elbow 8 penetrates through any guide vane 6 to enter the impeller 7 and extend to the guide vane outlet water guide cone 9 through the impeller 7, and the equal-diameter elbow 8 is communicated with gaps between the impeller 7 and the nozzle.
Further, the equal diameter elbow 4 is an equal diameter elbow at 45 °. The diameter of the water outlet 1 of the centrifugal pump is 0.4 times of the diameter of a nozzle of the single-nozzle water jet propulsion pump device; the diameter of the horizontal pipe 3 is 0.1 time of the diameter of the nozzle of the single-nozzle water jet propulsion pump device; the thickness of the guide vane 6 is 0.12 times of the diameter of the nozzle of the single-nozzle water jet propulsion pump device.
When the single-nozzle water jet propulsion pump device is used, under normal conditions, the single-nozzle water jet propulsion pump device is started, and water is sucked in by the single-nozzle water jet propulsion pump device and is sprayed out from a nozzle of the single-nozzle water jet propulsion pump device;
when thrust needs to be increased for a short time, the centrifugal pump is started, water enters the centrifugal pump from the water inlet of the centrifugal pump, flows to the nozzle of the single-nozzle water jet propulsion pump device through the water outlet 1 of the centrifugal pump sequentially through the reducing pipe 2, the horizontal pipe 3, the equal-diameter bent pipe 4, the equal-diameter inclined straight pipe 5 and the equal-diameter bent pipe 8, and is sprayed out through the nozzle, so that the thrust is increased.
Claims (5)
1. A short-time high-thrust water jet propulsion pump device externally connected with jet flow comprises a short-time high-thrust water jet propulsion pump device arranged on a single-nozzle water jet propulsion pump device, wherein the short-time high-thrust water jet propulsion pump device comprises a centrifugal pump, and a centrifugal pump water outlet (1) and a centrifugal pump water inlet are arranged on the centrifugal pump; the method is characterized in that:
the single-nozzle water jet propulsion pump device comprises a motor (10) and a water jet propulsion pump body, wherein a water inlet is formed in one end of the water jet propulsion pump body, a nozzle is formed in the other end of the water jet propulsion pump body, the water inlet, the water jet propulsion pump body and the nozzle are sequentially communicated, a power output shaft of the motor extends into the water jet propulsion pump body, and a plurality of blades (11) are fixed at one end, arranged in the water jet propulsion pump body, of the power output shaft of the motor; an impeller (7) is arranged in the water jet propulsion pump body, a plurality of guide vanes (6) are arranged on the impeller (7), the impeller (7) is fixed in the water jet propulsion pump body, a gap is reserved between the impeller (7) and the nozzle, a gap is reserved between the impeller (7) and the plurality of vanes (11), and a guide vane outlet water guide cone (9) is arranged at one end, close to the nozzle, of the impeller (7); when the motor is started, the power output shaft of the motor rotates to drive the blades to rotate, and water flows in from the water inlet and is sprayed out through the water inlet, the water spray propulsion pump body and the nozzle in sequence;
a reducer (2) is externally connected to the water outlet (1) of the centrifugal pump, one end of the reducer (2) is connected with the water outlet (1) of the centrifugal pump, the other end of the reducer is connected with a horizontal pipe (3), and the pipe diameter of the reducer (2) is gradually reduced from the end, connected with the water outlet (1) of the centrifugal pump, of the reducer (2) to the end, connected with the horizontal pipe (3);
one end of the horizontal pipe (3) is connected with the reducing pipe (2), and the other end of the horizontal pipe is connected with the equal-diameter bent pipe (4); one end of the equal-diameter bent pipe (4) is connected with the horizontal pipe (3), and the other end of the equal-diameter bent pipe is connected with the equal-diameter inclined straight pipe (5); one end of the equal-diameter inclined straight pipe (5) is connected with the equal-diameter bent pipe (4), and the other end of the equal-diameter inclined straight pipe is connected with the equal-diameter bent pipe (8);
the water outlet (1) of the centrifugal pump, the reducing pipe (2), the horizontal pipe (3), the equal-diameter bent pipe (4), the equal-diameter inclined straight pipe (5) and the equal-diameter bent pipe (8) are sequentially communicated and connected;
one end of the equal-diameter bent pipe (8) is connected with the equal-diameter inclined straight pipe (5), the other end of the equal-diameter bent pipe penetrates through any guide vane (6) to enter the impeller (7) and extend to the guide vane outlet water guide cone (9) through the impeller (7), and gaps between the equal-diameter bent pipe (8) and the impeller (7) and between the equal-diameter bent pipe and the nozzle are communicated.
2. The short-term high-thrust jet propulsion pump device with external jet flow as claimed in claim 1, wherein: the equal-diameter bent pipe (4) is a 45-degree equal-diameter bent pipe.
3. The short-term high-thrust jet propulsion pump device with external jet flow as claimed in claim 1, wherein: the diameter of the water outlet (1) of the centrifugal pump is 0.4 times of the diameter of the nozzle of the single-nozzle water jet propulsion pump device;
the diameter of the horizontal pipe (3) is 0.1 time of the diameter of the nozzle of the single-nozzle water jet propulsion pump device.
4. The short-term high-thrust jet propulsion pump device with external jet flow as claimed in claim 1, wherein: the thickness of the guide vane (6) is 0.12 times of the diameter of the nozzle of the single-nozzle water jet propulsion pump device.
5. The use method of the short-time high-thrust water jet propulsion pump device externally connected with jet flow, which is characterized by comprising the following steps of:
under normal conditions, starting the single-nozzle water jet propulsion pump device, and sucking water into the single-nozzle water jet propulsion pump device and spraying the water out of a nozzle of the single-nozzle water jet propulsion pump device;
when thrust is needed to be increased for a short time, the centrifugal pump is started, water enters the centrifugal pump from the water inlet of the centrifugal pump, flows to the nozzle of the single-nozzle water jet propulsion pump device through the reducing pipe (2), the horizontal pipe (3), the equal-diameter bent pipe (4), the equal-diameter inclined straight pipe (5) and the equal-diameter bent pipe (8) in sequence and is sprayed out through the nozzle, and therefore the thrust is increased.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010781353.5A CN111907675B (en) | 2020-08-06 | 2020-08-06 | Short-time high-thrust water jet propulsion pump device externally connected with jet flow and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010781353.5A CN111907675B (en) | 2020-08-06 | 2020-08-06 | Short-time high-thrust water jet propulsion pump device externally connected with jet flow and using method thereof |
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| Publication Number | Publication Date |
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| CN111907675A true CN111907675A (en) | 2020-11-10 |
| CN111907675B CN111907675B (en) | 2021-06-25 |
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| CN202010781353.5A Active CN111907675B (en) | 2020-08-06 | 2020-08-06 | Short-time high-thrust water jet propulsion pump device externally connected with jet flow and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112407216A (en) * | 2020-11-19 | 2021-02-26 | 扬州大学 | Pulse jet flow water spray propulsion pump device based on electric valve at nozzle and using method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3805731A (en) * | 1972-05-05 | 1974-04-23 | North American Rockwell | Dual pump waterjet |
| JPH08113193A (en) * | 1994-10-04 | 1996-05-07 | Outboard Marine Corp | Water pump for propulsion of ship |
| WO1999042361A1 (en) * | 1996-04-08 | 1999-08-26 | Burg, Paulette, Renee | Marine propulsor |
| CN1833952A (en) * | 2006-01-05 | 2006-09-20 | 余庆发 | Water spraying propelling device |
| CN101734361A (en) * | 2008-11-12 | 2010-06-16 | 孙志伟 | Mixed-flow device of ship diversion propelling 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 |
| CN108327883A (en) * | 2017-12-29 | 2018-07-27 | 中国船舶工业集团公司第七0八研究所 | A kind of hydraulic jet propulsion system shafting structure |
-
2020
- 2020-08-06 CN CN202010781353.5A patent/CN111907675B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3805731A (en) * | 1972-05-05 | 1974-04-23 | North American Rockwell | Dual pump waterjet |
| JPH08113193A (en) * | 1994-10-04 | 1996-05-07 | Outboard Marine Corp | Water pump for propulsion of ship |
| WO1999042361A1 (en) * | 1996-04-08 | 1999-08-26 | Burg, Paulette, Renee | Marine propulsor |
| CN1833952A (en) * | 2006-01-05 | 2006-09-20 | 余庆发 | Water spraying propelling device |
| CN101734361A (en) * | 2008-11-12 | 2010-06-16 | 孙志伟 | Mixed-flow device of ship diversion propelling 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 |
| CN108327883A (en) * | 2017-12-29 | 2018-07-27 | 中国船舶工业集团公司第七0八研究所 | A kind of hydraulic jet propulsion system shafting structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112407216A (en) * | 2020-11-19 | 2021-02-26 | 扬州大学 | Pulse jet flow water spray propulsion pump device based on electric valve at nozzle and using method thereof |
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|---|---|
| CN111907675B (en) | 2021-06-25 |
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