CN116461683A - Pump jet propeller conduit connection structure - Google Patents
Pump jet propeller conduit connection structure Download PDFInfo
- Publication number
- CN116461683A CN116461683A CN202310502904.3A CN202310502904A CN116461683A CN 116461683 A CN116461683 A CN 116461683A CN 202310502904 A CN202310502904 A CN 202310502904A CN 116461683 A CN116461683 A CN 116461683A
- Authority
- CN
- China
- Prior art keywords
- stern
- bow
- end flange
- guide pipe
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000565 sealant Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000003292 glue Substances 0.000 claims description 5
- 239000007921 spray Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000011800 void material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H5/00—Arrangements on vessels of propulsion elements directly acting on water
- B63H5/07—Arrangements on vessels of propulsion elements directly acting on water of propellers
- B63H5/14—Arrangements on vessels of propulsion elements directly acting on water of propellers characterised by being mounted in non-rotating ducts or rings, e.g. adjustable for steering purpose
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a pump spray propeller conduit connection structure, which comprises a connection flange; the connecting flange is arranged behind the blades of the propeller and comprises a stern end flange and a bow end flange, and the diameter of the bow end flange is larger than that of the propeller; the stern end flange and the bow end flange are connected through connecting bolts, and the stern section guide pipe and the bow section guide pipe are connected together. According to the invention, the connecting flange is arranged behind the propeller blades, so that the rigidity of the guide pipe near the propeller is improved, the propeller blades cannot be blocked when the stern section guide pipe is deformed, and the safety of the ship is improved.
Description
Technical Field
The invention belongs to the field of pump spray propeller equipment, and particularly relates to a pump spray propeller pipe connecting structure.
Background
In existing ship designs, the outside diameter of the propeller is typically larger than the small end diameter of the pump jet propeller conduit. In order to install the propeller inside the pump jet propeller conduit, the pump jet propeller conduit structure is generally divided into a bow section and a stern section; firstly, a conduit bow section structure is installed, then a propeller is installed, and finally, a conduit stern section structure is installed.
At present, the traditional conduit connecting structure in China is characterized in that a connecting flange is arranged in the middle of a conduit, the size and the weight of the conduit stern section structure are large, a gap between the conduit stern section and a propeller blade is small, when the conduit stern section structure is greatly deformed after being subjected to impact collision load, the conduit stern section structure is deformed, the propeller blade can be blocked by the conduit, so that a ship loses power, and the safety of the ship is endangered. In addition, the heavier stern section structure also greatly improves the installation difficulty and the processing precision requirement between the two sections of guide pipes of the bow and the stern.
Disclosure of Invention
The invention mainly aims to provide a duct connecting structure of a pump jet propeller, which moves the connecting flanges of a bow section and a stern section backwards as much as possible, so that the connecting flanges are arranged behind propeller blades, the rigidity of ducts near the propeller is improved, and when the duct structure of the stern section is deformed, the propeller blades are not blocked, and the safety of a ship is improved.
The technical scheme adopted by the invention is as follows:
a pump spray propeller conduit connection structure comprises a connection flange;
the connecting flange is arranged behind the blades of the propeller and comprises a stern end flange and a bow end flange, and the diameter of the bow end flange is larger than that of the propeller; the stern end flange is arranged at the front end of the stern section guide pipe, and the bow end flange is arranged at the rear end of the bow section guide pipe; the stern end flange and the bow end flange are connected through connecting bolts, and the stern section guide pipe and the bow section guide pipe are connected together to form a guide pipe structure.
According to the scheme, the connecting joint of the conduit structure is provided with the sealant.
According to the scheme, the screw bolt through hole is formed in the stern end flange, the threaded hole is formed in the bow end flange, and the threaded hole cannot penetrate through the bow end flange so as to ensure tightness.
According to the scheme, the connecting bolts are coated with the thread locking glue before being screwed into the stern end flange and the bow end flange so as to ensure tightness.
According to the scheme, the stern section guide pipe comprises an stern section guide pipe outer ring surface surrounded by a fixed skin and a detachable skin and a stern section guide pipe inner ring surface surrounded by the fixed skin; the detachable skin is connected with the fixed skin through sealant, and the detachable skin is arranged at the connecting flange; the gap in the stern section conduit is filled with light buoyancy material;
the inner and outer ring surfaces of the bow duct are surrounded by a fixed skin; a bow section annular rib and a bow section longitudinal rib are arranged between the outer annular surface of the bow section guide pipe and the inner annular surface of the bow section guide pipe; the gap in the bow duct is filled with light buoyancy material.
According to the scheme, the width range of the detachable skin is just the distance between the stern end flange and the stern section ring rib.
According to the scheme, the stern section longitudinal ribs (reinforcing ribs) are arranged between the stern end flange and the stern section ring ribs, the lug plates are welded on the stern section longitudinal ribs, the detachable skin is fixed on the lug plates through the countersunk head screws (reinforcing and fixing are carried out on the detachable skin through the countersunk head screws), and the fixing effect of the detachable skin is improved.
According to the scheme, the detachable skins are divided into a plurality of blocks in the circumferential direction, and the connecting joints between the adjacent detachable skins are filled with sealant.
According to the scheme, the thickness of the stern end flange is 2-3 times of the thickness of the stern section ring rib; the thickness of the bow end flange is 2-3 times of the thickness of the annular rib of the bow section, so that the rigidity of the conduit structure is improved.
The invention has the beneficial effects that:
on the premise of ensuring that the propeller can be smoothly installed, the connecting flange is arranged behind the propeller blade, namely: the connecting flange is staggered with the propeller blade, so that the propeller blade cannot be clamped when the stern section structure is deformed, and the safety of the ship is ensured; the rigidity of the connecting flange is far greater than that of a common annular rib, and the connecting flange is arranged near the propeller, so that the rigidity of a conduit near the propeller can be greatly improved, and the deformation of the conduit near the propeller is reduced;
the structure is simple, the installation is convenient, and the reliability and the safety of the catheter are effectively improved;
the existing guide pipe is provided with the connecting flange in the middle of the guide pipe, so that the weight of the guide pipe at the stern section is large, the disassembly and assembly difficulties of the guide pipe at the stern section are large, and the processing progress requirement is high; the invention moves the connecting flange backwards, which can greatly reduce the weight of the stern section conduit and reduce the processing precision requirement and the disassembly and assembly difficulty;
before the connecting bolts are screwed in, thread locking glue is required to be smeared, and the detachable skin and the fixed skin are sealed by sealant, so that seawater is prevented from entering the inside of the guide pipe through a connecting seam between the detachable skin and the fixed skin, the whole guide pipe is ensured to be in a watertight structure, and buoyancy is ensured;
the connecting flange is close to the tail end of the guide pipe structure as much as possible, so that the length of the guide pipe of the stern section is shortened, the weight of the guide pipe of the stern section is lightened, the structural rigidity of the guide pipe of the stern section is increased, and the deformation is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic longitudinal cross-sectional view of an upper portion of a pump jet impeller conduit connection structure;
FIG. 2 is an enlarged view of B in FIG. 1;
FIG. 3 is a cross-sectional view A-A of FIG. 2;
in the figure: 1. a conduit structure; 2. a propeller; 3. a stator; 4. a bow duct; 5. a stern section conduit; 6. a stern end flange; 7. a bow flange; 8. a connecting bolt; 9. screw section ring rib; 10. a detachable skin; 11. fixing the skin; 12. sealing glue; 13. a buoyancy material; 14. countersunk head screws; 15. ear plates; 16. and a longitudinal rib of the stern section.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The pump jet propeller mainly comprises a conduit structure 1, a propeller 2 and a stator 3. The duct structure 1 is fixed to the hull by means of a stator 3, the propeller 2 being placed inside the duct structure 1.
Referring to fig. 1-3, a pump jet propeller conduit connection structure includes a connection flange; the connecting flange is arranged behind the blades of the propeller 2 and is as close to the tail end of the conduit structure 1 as possible, and comprises a stern end flange 6 and a bow end flange 7, and the diameter of the bow end flange 7 is larger than that of the propeller 2. The stern end flange 6 is arranged at the front end of the stern section guide pipe 5 and is provided with a bolt through hole; the bow flange 7 is arranged at the rear end of the bow duct 4, and is provided with a threaded hole which cannot penetrate the bow flange 7 so as to ensure sealing. The stern end flange 6 and the bow end flange 7 are connected through connecting bolts 7; the connecting bolt 7 connects the stern section conduit 5 and the bow section conduit 4 together to form the conduit structure 1. Before the connecting bolts 8 are screwed into the stern end flange 6 and the bow end flange 7, thread locking glue is smeared so as to ensure tightness.
The stern section guide tube 5 comprises a stern section guide tube outer ring surface surrounded by a fixed skin 11 and a detachable skin 10 and a stern section guide tube inner ring surface surrounded by the fixed skin 11; the stern section annular rib 9 and the stern section longitudinal rib 16 are arranged between the outer ring surface of the stern section guide pipe and the inner ring surface of the stern section guide pipe, the detachable skin 10 is connected with the fixed skin 11 through the sealant 12, and the detachable skin 10 is arranged at the connecting flange; the void in the stern tube 5 is filled with a lightweight buoyancy material 13. In this embodiment, the width of the detachable skin 11 is just the distance between the stern end flange 6 of the connection flange and the stern section ring ribs 9, so as to facilitate the connection between the stern section duct 5, the bow section duct 4 and the connection flange. A stern section longitudinal rib 16 is arranged between the stern end flange 6 of the connecting flange and the stern section annular rib 9, an ear plate 15 is welded on the stern section longitudinal rib 16, the detachable skin 10 is fixed on the ear plate 15 by the countersunk head screw 14, the connection is very convenient and reliable, and the fixing effect of the detachable skin 10 is improved.
The bow duct 4 comprises an inner ring surface and an outer ring surface of the bow duct which are surrounded by a fixed skin 11; a bow section annular rib and a bow section longitudinal rib are arranged between the outer annular surface of the bow section guide pipe and the inner annular surface of the bow section guide pipe; the void in the fore duct is filled with a lightweight buoyancy material 13.
In order to ensure tightness, the connecting seam of the duct structure 1 is provided with a sealant.
In this embodiment, the detachable skin 10 may be divided into a plurality of pieces in the circumferential direction so as to be installed; the joint between the adjacent detachable skins 10 is filled with a sealant 12 to achieve sealing.
In the embodiment, the thickness of the stern end flange is 2 times of the thickness of the stern section ring rib; the thickness of the bow end flange is 2 times of the thickness of the annular rib of the bow section, and the rigidity of the connecting flange is far greater than that of the annular rib, so that the rigidity of the conduit structure is improved.
The invention can make the connecting flange move backwards without changing the position of the screw propeller, shorten the length of the conduit of the stern section, increase the rigidity of the conduit near the screw propeller, lighten the weight of the conduit of the stern section and greatly reduce the possibility of the conduit blocking the screw propeller.
It will be understood that modifications and variations will be apparent to those skilled in the art from the foregoing description, and it is intended that all such modifications and variations be included within the scope of the following claims.
Claims (8)
1. The utility model provides a pump spouts propeller pipe connection structure, includes flange, its characterized in that:
the connecting flange is arranged behind the blades of the propeller and comprises a stern end flange and a bow end flange, and the diameter of the bow end flange is larger than that of the propeller; the stern end flange is arranged at the front end of the stern section guide pipe, and the bow end flange is arranged at the rear end of the bow section guide pipe; the stern end flange and the bow end flange are connected through connecting bolts, and the stern section guide pipe and the bow section guide pipe are connected together to form a guide pipe structure.
2. The pump-jet impeller conduit connection structure according to claim 1, characterized in that: the stern end flange is provided with a bolt through hole, the bow end flange is provided with a threaded hole, and the threaded hole cannot penetrate through the bow end flange so as to ensure tightness.
3. The pump-jet impeller conduit connection structure according to claim 1, characterized in that: before the connecting bolts are screwed into the stern end flange and the bow end flange, thread locking glue is smeared to ensure tightness.
4. The pump-jet impeller conduit connection structure according to claim 1, characterized in that: the stern section guide pipe comprises a stern section guide pipe outer ring surface surrounded by a fixed skin and a detachable skin and a stern section guide pipe inner ring surface surrounded by the fixed skin; the detachable skin is connected with the fixed skin through sealant, and the detachable skin is arranged at the connecting flange; the gap in the stern section conduit is filled with light buoyancy material;
the inner and outer ring surfaces of the bow duct are surrounded by a fixed skin; a bow section annular rib and a bow section longitudinal rib are arranged between the outer annular surface of the bow section guide pipe and the inner annular surface of the bow section guide pipe; the gap in the bow duct is filled with light buoyancy material.
5. The pump-jet impeller conduit connection structure according to claim 4, characterized in that: the width of the detachable skin is just the distance between the stern end flange and the stern section ring rib.
6. The pump-jet impeller conduit connection structure according to claim 5, characterized in that: a stern section longitudinal bar is arranged between the stern end flange and the stern section ring bar, an ear plate is arranged on the stern section longitudinal bar, and the detachable skin is fixed on the ear plate by countersunk head screws.
7. The pump-jet impeller conduit connection structure according to any one of claims 1, 4 or 5, characterized in that: the detachable skins are divided into a plurality of blocks in the circumferential direction, and the connecting joints between adjacent detachable skins are filled with sealant.
8. The pump-jet impeller conduit connection structure according to claim 1, characterized in that: the thickness of the stern end flange is 2-3 times of the thickness of the stern section ring rib; the thickness of the bow flange is 2-3 times of the thickness of the annular rib of the bow section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310502904.3A CN116461683A (en) | 2023-04-28 | 2023-04-28 | Pump jet propeller conduit connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310502904.3A CN116461683A (en) | 2023-04-28 | 2023-04-28 | Pump jet propeller conduit connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116461683A true CN116461683A (en) | 2023-07-21 |
Family
ID=87185117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310502904.3A Pending CN116461683A (en) | 2023-04-28 | 2023-04-28 | Pump jet propeller conduit connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116461683A (en) |
-
2023
- 2023-04-28 CN CN202310502904.3A patent/CN116461683A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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