CN115817703B - Gas release device capable of being automatically and passively opened and closed for wading navigation body - Google Patents
Gas release device capable of being automatically and passively opened and closed for wading navigation body Download PDFInfo
- Publication number
- CN115817703B CN115817703B CN202211320161.XA CN202211320161A CN115817703B CN 115817703 B CN115817703 B CN 115817703B CN 202211320161 A CN202211320161 A CN 202211320161A CN 115817703 B CN115817703 B CN 115817703B
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- China
- Prior art keywords
- gas
- ventilation chamber
- intermediate shaft
- air inlet
- wading
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- 238000009423 ventilation Methods 0.000 claims abstract description 80
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 24
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 109
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000005461 lubrication Methods 0.000 description 3
- 238000009736 wetting Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000013022 venting Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Sealing Devices (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a gas release device capable of being automatically and passively opened and closed for a wading navigation body. The ventilation chamber is arranged in the ventilation chamber main body, at least one group of air inlet and outlet openings are formed in the side wall along the first direction, each group of air inlet and outlet openings comprises air inlet and outlet openings with two sides respectively, the intermediate shaft is arranged in the ventilation chamber in a free moving mode along the first direction, the pressure stabilizing cavity is arranged on one side of the ventilation chamber main body, on which the air inlet is formed, and is communicated with the air inlet, the first gas pipeline is communicated with the pressure stabilizing cavity, and the second gas pipeline is respectively communicated with the first gas pipeline and the ventilation chamber. The invention realizes the control of automatic passive opening and closing of gas release in ship bubble drag reduction, can automatically open and close without external power source, does not need to be driven by an additional power device, and prevents marine organisms from adhering.
Description
Technical Field
The invention relates to a gas control device used in the technical field of bubble drag reduction of wading navigation bodies, in particular to a gas release device used for gas lubrication drag reduction of wading navigation bodies.
Background
The main technical idea for reducing the resistance of bubbles of a ship for a navigation body involved in water, such as a ship, is to introduce air into the bottom surface of the ship, and reduce the wetting area of the ship body through continuous or discrete bubbles formed between the ship body and water so as to greatly reduce the friction resistance of the ship for navigation. In the technical approach, the ventilation device is generally arranged at the front part of the ship body by utilizing the waste gas of the ship body or an external air source, and the ventilation device is matched with the running speed of the ship to adjust the air quantity, so that the sailing resistance is reduced, the propulsion power is saved, the running power consumption is reduced, and the green and energy-saving sailing of the ship is realized.
The existing gas release units are mostly open chambers, are of an open structure, break the continuity and flatness of the original surface of the ship, and are of a static open structure, marine organisms can easily enter the chambers, and the chambers are easily attached by the marine organisms, so that the actual drag reduction effect is affected. In addition, the existing movable ventilation structure needs an external power source, and the load is increased.
For example, in the gas release device of patent application 201520281832.5, the fan-shaped gas ejection chamber is pivotable, but needs to be powered by a rotary drive, making the system complex and heavy, adding to the overall weight and layout difficulties.
Disclosure of Invention
In order to solve the problems in the background art, the invention provides an openable and closable gas release device without an external power source, which aims to solve the problems that the existing open gas release unit is easy to be attached by marine organisms or the existing movable gas release device needs an additional power source, so that the system is complex and heavy.
The invention aims at the two problems, and designs an openable and closable gas release device taking gas as a power source, which closes the gas outlet when ventilation is not needed, so as to prevent marine organisms from adhering in the cavity. When in ventilation, part of gas is used as a power source to push the intermediate shaft to move, and the air outlet is opened to realize ventilation.
The technical scheme adopted by the invention is as follows:
The ventilation device comprises a ventilation chamber main body, wherein a ventilation chamber is arranged in the ventilation chamber main body, at least one group of air inlet and outlet openings are formed in the side wall of the ventilation chamber main body along a first direction, and each group of air inlet and outlet openings comprises an air inlet and an air outlet which are respectively formed in two sides of the ventilation chamber main body along the first direction;
Comprising an intermediate shaft freely movably mounted in the ventilation chamber in a first direction;
the pressure stabilizing cavity is arranged on one side of the ventilation cavity main body, provided with an air inlet, and is communicated with the air inlet;
Comprises a first gas pipeline which is communicated with a pressure stabilizing cavity;
comprises a second gas pipeline, a first gas pipeline and a ventilation chamber.
A relatively closed space is formed between the end of the intermediate shaft and the inner end surface of the ventilation chamber as a control chamber, and a second gas line is connected between the middle part of the first gas line and the control chamber.
One end of the first gas pipeline is communicated with the pressure stabilizing cavity, and the other end of the first gas pipeline is communicated with an external gas source.
The spring is arranged in the ventilation cavity close to the root end of the intermediate shaft, and two ends of the spring are respectively connected between the root end of the intermediate shaft and the inner end surface of the ventilation cavity.
The ventilation chamber near the root end of the intermediate shaft is communicated with the outside through a branch pipeline.
The intermediate shaft is provided with a conducting structure for moving and matching with the air inlet and the air outlet in the same group of air inlet and outlet in the first direction.
The conduction structure comprises an annular groove and an ungrooved part which are sequentially arranged along a first direction, and the annular groove is formed in the peripheral surface of the intermediate shaft:
in the gas release state, the gas inlet is communicated with the gas outlet through the annular groove;
In the state of no gas release, the gas inlet and the gas outlet are blocked by the ungrooved part of the intermediate shaft, which is not provided with the annular groove, so that the gas inlet cannot be communicated with the gas outlet through the annular groove.
The outer peripheral surface of the ungrooved part is provided with a sealing ring groove for installing a sealing ring, and the sealing ring is installed at the sealing ring groove, so that the ungrooved part is in sealing connection with the inner wall of the ventilation cavity through the sealing ring.
The air inlets and the air outlets in the same group of air inlets and air outlets are positioned on the same circumference of the ventilation chamber main body.
The air inlets and the air outlets in the same group of air inlets and air outlets are not accurately positioned on the same circumference of the ventilation chamber main body, and the distance between the air inlets and the air outlets in the same group of air inlets and air outlets along the first direction is smaller than the width of the annular groove.
The ventilation chamber body is provided with a plurality of groups of air inlet and outlet, and the intermediate shaft is provided with conducting structures with the same number as the air inlet and outlet groups.
The intermediate shaft is provided with a plurality of conducting structures in a first direction.
The ventilation chamber body is internally provided with an inner flange for limiting the movement of the intermediate shaft, and the inner flange is embedded into an annular groove formed in the intermediate shaft.
The device can be applied to bubble release of the wading navigation body for lubrication and drag reduction. The device is arranged on the wetting surface of the wading navigation body.
The wading craft includes an underwater craft such as a ship, an amphibious vehicle, a water plane, etc., and a water craft such as a submarine, an underwater robot, etc., but is not limited thereto.
Compared with the prior art, the invention has the technical effects that:
The invention realizes the control of automatic passive opening and closing of gas release in the bubble drag reduction of the wading navigation body, can automatically open and close without an external power source, does not need to be driven by an additional power device, and prevents the attachment of marine organisms.
Drawings
Fig. 1 is an internal structural view of the present invention.
Reference numerals illustrate:
1. Ventilation chamber body
11. Air outlet
12. Air inlet
2. Intermediate shaft
21. Sealing ring groove
3. First gas pipeline
4. Second gas pipeline
5. Pressure stabilizing cavity
8. And (3) a spring.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
As shown in fig. 1, the device mainly comprises a ventilation chamber main body 1, an intermediate shaft 2, a first gas pipeline 3, a second gas pipeline 4, a pressure stabilizing cavity 5 and a spring 8.
The ventilation device comprises a ventilation chamber main body 1, wherein a ventilation chamber which is a cylinder is arranged in the ventilation chamber main body 1, at least one group of air inlet and outlet openings are formed in the side wall of the ventilation chamber main body 1 along the first direction, and each group of air inlet and outlet openings comprises an air inlet 12 for air inlet and an air outlet 11 for air outlet which are respectively formed in two sides of the ventilation chamber main body 1 along the first direction;
Comprising an intermediate shaft 2 in the form of a cylinder which is freely movably sealed in the ventilation chamber in a first direction from the end of the intermediate shaft 2 to the root end.
The ventilation device comprises a pressure stabilizing cavity 5, wherein the pressure stabilizing cavity is arranged on one side of a ventilation cavity main body 1 provided with an air inlet 12 and is communicated with the air inlet 12, in particular implementation, a side cavity is arranged on one side of the ventilation cavity main body 1 provided with the air inlet 12, and a cavity communicated with the ventilation cavity is arranged in the side cavity and is used as the pressure stabilizing cavity 5.
Comprises a first gas pipeline 3 which is communicated with a pressure stabilizing cavity 5;
comprising a second gas line 4 and a first gas line 3 and a ventilation chamber, respectively.
A relatively closed space is formed between the end face of the intermediate shaft 2 and the inner end face of its corresponding venting chamber as a control chamber, i.e. the venting chamber forms a control chamber at the end of the intermediate shaft 2, and a second gas line 4 is connected between the middle part of the first gas line 3 and the control chamber.
The intermediate shaft 2 is in sealing connection with the inner wall of the ventilation chamber.
One end of the first gas pipeline 3 is communicated with the pressure stabilizing cavity 5, the other end of the first gas pipeline is communicated with an external gas source, and the other end of the first gas pipeline is used for entering gas.
The device also comprises a spring 8 which is arranged in the ventilation chamber close to the root end of the intermediate shaft 2, and the two ends of the spring are respectively connected between the root end of the intermediate shaft 2 and the inner end surface of the ventilation chamber corresponding to the root end of the intermediate shaft.
In a specific implementation, the center of the end face of the middle shaft 2 can be provided with a shaft parallel to the first direction, the shaft passes through the spring 8, the spring 8 is sleeved outside the shaft, and the shaft can extend out after passing through the ventilation chamber main body 1 again and can move along the first direction, so that the installation of the positioning spring 8 can also position the movement of the middle shaft 2 along the first direction. The ventilation chamber body 1 is provided with a through hole for the shaft to pass through, and the shaft is in sealing fit with the through hole.
The ventilation chamber near the root end of the intermediate shaft 2 is communicated with the outside through a branch pipeline.
The intermediate shaft 2 is provided with a conducting structure for moving and matching in the first direction the air inlet 12 and the air outlet 11 in the same group of air inlet and outlet. In a specific implementation, the ventilation chamber body 1 and the intermediate shaft 2 are arranged in a column structure, and the first direction is a column direction of the column.
The conduction structure comprises an annular groove and an ungrooved cylinder part, wherein the annular groove and the ungrooved cylinder part are sequentially arranged along a first direction and are used for communicating, and the annular groove is formed in the peripheral surface of the intermediate shaft 2:
In the gas release state, the intermediate shaft 2 is driven by the air pressure in the control chamber to move along the first direction against the spring force of the spring 8 until the gas inlet 12 is communicated with the gas outlet 11 through the annular groove;
In the state of no gas release, the intermediate shaft 2 is not driven by the air pressure in the control chamber, and the air inlet 12 and the air outlet 11 are blocked by the ungrooved cylinder part of the intermediate shaft 2, which is not provided with the annular groove, at the reverse recovery position along the first direction under the action of overcoming the spring force of the spring 8, so that the air inlet 12 cannot be communicated with the air outlet 11 through the annular groove.
The outer peripheral surface of each ungrooved cylinder part is provided with a sealing ring groove 21 for installing a sealing ring, and the sealing ring groove 21 is provided with a sealing ring, so that the ungrooved cylinder parts are in sealing connection with the inner wall of the ventilation cavity through the sealing ring. The sealing ring groove 21 on the intermediate shaft is provided with a sealing ring, so that the intermediate shaft can be attached to the inner wall of the cavity, and the air tightness is ensured.
The air inlet 12 and the air outlet 11 in the same group of air inlet and outlet are positioned on the same circumference of the ventilation chamber main body 1. Further, the air inlets 12 and the air outlets 11 in the same set of air inlets and outlets are not exactly located on the same circumference of the ventilation chamber body 1, and the distance between the air inlets 12 and the air outlets 11 in the same set of air inlets and outlets along the first direction is smaller than the width of the annular groove.
In specific implementation, a plurality of groups of air inlet and outlet are formed in the ventilation chamber main body 1, the intermediate shaft 2 is provided with a conduction structure with the same number as that of the air inlet and outlet groups, and one group of air inlet and outlet corresponds to one conduction structure.
The intermediate shaft 2 is provided with a plurality of conduction structures in the first direction, and the annular grooves and the plurality of column portions of the plurality of conduction structures are alternately arranged in order along the first direction. The ventilation chamber body 1 is also provided with a number of air outlets 11 and a number of air inlets 12.
The ventilation chamber body 1 is provided with an inner flange for limiting the movement of the intermediate shaft 2 in the ventilation chamber, and the inner flange is embedded into an annular groove formed in the intermediate shaft 2 so as to limit the movement limit position of the intermediate shaft 2 along the first direction. In particular embodiments, the inner flange may be provided near the end of the intermediate shaft 2.
The intermediate shaft 2 is provided with at least one outer flange-like structural part with the same cross-sectional shape and area as those of the ventilation chamber in a subchamber which is isolated by an inner flange of the ventilation chamber main body 1 and is close to the joint between the second gas pipeline 4 and the ventilation chamber at one end close to the joint between the second gas pipeline 4 and the ventilation chamber, the outer flange-like structural part is formed by an annular groove, and the outer flange-like structural part and the inner wall of the ventilation chamber can be connected in a sealing mode by a sealing ring.
The device is arranged on the wetting surface of the ship body, and the working principle process after the device is arranged is as follows:
When the gas release is not carried out, the first gas pipeline 3 does not enter gas at one end which is not communicated with the pressure stabilizing cavity 5, the gas entering the first gas pipeline 3 does not input gas into the control cavity through the second gas pipeline 4, the gas pressure in the control cavity cannot be increased, the intermediate shaft 2 cannot be pushed to move along the root end in the first direction, the intermediate shaft 2 is reversely returned to a normal position along the first direction under the action of the spring 8, namely, the gas inlets 12 of the same group of gas inlets and gas outlets cannot be communicated through the annular groove and the gas outlets 11, and are blocked by the ungrooved cylinder, the gas pipeline is not conducted and is not ventilated, and the state of no gas release is achieved.
When gas release is needed, the first gas pipeline 3 enters gas at one end which is not communicated with the pressure stabilizing cavity 5, the gas entering the first gas pipeline 3 is input into the control cavity through the second gas pipeline 4, the gas pressure in the control cavity is increased to further push the intermediate shaft 2 to move along the root end in the first direction, the spring 8 is compressed, the intermediate shaft 2 moves until the gas inlets 12 of the same group of gas inlets and outlets are communicated with the gas outlets 11 through the annular grooves, meanwhile, the first gas pipeline 3 directly ventilates into the pressure stabilizing cavity 5, the pressure stabilizing cavity 5 is directly communicated with the gas inlets 12, and thus, the gas entering the first gas pipeline 3 is sequentially ventilated through the pressure stabilizing cavity 5 and the annular grooves of the gas inlets 12 and then is discharged from the gas outlets 11, and the gas pipeline is conducted to realize ventilation, so that the gas release state is achieved. When the surface of the ship body releases gas, gas lubrication drag reduction can be realized.
After the gas starts to be released, most of the gas entering the first gas pipeline 3 flows through the first gas pipeline 3, the pressure stabilizing cavity 5, the gas inlet 12 and the annular groove and then is discharged from the gas outlet 11, the gas flows through the first gas pipeline 3, the pressure stabilizing cavity 5, the gas inlet 12, the annular groove and the gas outlet 11 rapidly and sequentially, and the pressure drop in the first gas pipeline 3 is larger than the pressure drop in the second gas pipeline 4, so that the pressure in the second gas pipeline 4 is always higher than the gas pressure of the gas flowing through the first gas pipeline 3, the pressure stabilizing cavity 5, the gas inlet 12, the annular groove and the gas outlet 11, and the gas can be always kept in a gas release state.
When the gas release is to be stopped, the gas supply to the first gas pipeline 3 is stopped, the pressure in the chamber is controlled to drop, the spring 8 rebounds, the intermediate shaft 2 is reset, and the gas outlet 11 is automatically closed.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211320161.XA CN115817703B (en) | 2022-10-26 | 2022-10-26 | Gas release device capable of being automatically and passively opened and closed for wading navigation body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211320161.XA CN115817703B (en) | 2022-10-26 | 2022-10-26 | Gas release device capable of being automatically and passively opened and closed for wading navigation body |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115817703A CN115817703A (en) | 2023-03-21 |
| CN115817703B true CN115817703B (en) | 2024-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211320161.XA Active CN115817703B (en) | 2022-10-26 | 2022-10-26 | Gas release device capable of being automatically and passively opened and closed for wading navigation body |
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| Country | Link |
|---|---|
| CN (1) | CN115817703B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104709435A (en) * | 2015-03-01 | 2015-06-17 | 徐见金 | Triple-hulled manual ventilating supercavitation ship type |
| CN107738725A (en) * | 2017-09-28 | 2018-02-27 | 江苏大学 | A kind of supercavity submarine navigation device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20170000597A (en) * | 2015-06-24 | 2017-01-03 | 삼성중공업 주식회사 | Frictional resistance reduction device and Ship including the same |
| RU195955U1 (en) * | 2019-10-28 | 2020-02-11 | Параева Ольга Александровна | PULSE PNEUMOGENERATOR |
| CN111186527B (en) * | 2020-01-15 | 2021-03-09 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Marine gas layer resistance reduction energy-saving device |
-
2022
- 2022-10-26 CN CN202211320161.XA patent/CN115817703B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104709435A (en) * | 2015-03-01 | 2015-06-17 | 徐见金 | Triple-hulled manual ventilating supercavitation ship type |
| CN107738725A (en) * | 2017-09-28 | 2018-02-27 | 江苏大学 | A kind of supercavity submarine navigation device |
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| Publication number | Publication date |
|---|---|
| CN115817703A (en) | 2023-03-21 |
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