CN115892421A - Underwater passive cabin integrated cooling and ventilating device - Google Patents
Underwater passive cabin integrated cooling and ventilating device Download PDFInfo
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- CN115892421A CN115892421A CN202211356690.5A CN202211356690A CN115892421A CN 115892421 A CN115892421 A CN 115892421A CN 202211356690 A CN202211356690 A CN 202211356690A CN 115892421 A CN115892421 A CN 115892421A
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- seawater
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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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Abstract
The invention relates to the technical field of marine environment observation, in particular to a cooling and ventilating device for a semi-submersible type navigation body. An underwater passive cabin integrated cooling and ventilating device adopts the technical scheme that: during the advancing process of the navigation body, seawater is drained through a seawater drainage tube and flows into the heat exchange tube through a seawater inlet flange. Waste gas of the diesel engine enters the middle part of the integrated heat exchanger through the gas inlet flange; the waste gas contacts with the heat exchange pipe in the flowing process and is cooled by the seawater flowing in the pipe, and meanwhile, the waste gas contacts with the outer shell of the navigation body and is cooled by the seawater flowing outside the outer shell of the navigation body. The seawater flows out from the heat exchange pipe, upwards flows into a seawater discharge pipe, and is discharged into the seawater outside the outer shell of the navigation body. The invention utilizes the positive pressure area and the negative pressure area generated by the flowing of the seawater to introduce the seawater into the heat exchanger, the exhaust gas of the diesel engine is discharged out of the cabin after being cooled, and the exhaust condensate water is automatically treated, thereby improving the economical efficiency and the maintainability of the equipment.
Description
Technical Field
The invention relates to the technical field of marine environment observation, in particular to a cooling and ventilating device for a semi-submersible type navigation body.
Background
The semi-submersible type navigation body has the advantages of unmanned surface vehicle and AUV, and has wide application prospect. The high-speed diesel engine is generally used as a power source, and is submerged to work underwater when working, and air is sucked through a vent pipe extending out of the water surface. Therefore, the resistance of the side scan sonar underwater vehicle is greatly reduced compared with that of an unmanned surface vehicle, and compared with the water surface vehicle with the similar size, the side scan sonar underwater vehicle can achieve higher speed, has longer sailing distance and is less influenced by sea waves, so that the sailing body is more stable, and the stability allows the side scan sonar with high quality to be detected under the high sea condition and the high speed. By additionally arranging the radio communication equipment and the GPS system on the vent pipe, the real-time data transmission and accurate navigation positioning can be realized, and the functions which cannot be realized by the ROV and the AUV are realized.
However, it is difficult to discharge the exhaust gas from the diesel engine. If the air is directly discharged from the underwater, the exhaust back pressure is increased, so that the expansion ratio of the turbine is reduced, the air inlet and exhaust resistance is increased, the air inlet amount is reduced, the pumping loss is increased, and the mechanical efficiency is reduced; meanwhile, the exhaust gas of the diesel engine flows backwards due to too high back pressure, the combustion is deteriorated, and the risk of seawater flowing backwards exists. If the waste gas is discharged from the vent pipe after being cooled, a heat exchanger needs to be arranged in the cabin, seawater is sucked by the electric pump to cool the waste gas of the diesel engine, the space in the cabin is occupied, the power consumption of the navigation body is increased, and meanwhile, the cooling water of the waste gas of the diesel engine in the heat exchanger needs to be manually discharged at regular intervals.
Disclosure of Invention
The purpose of the invention is: in order to solve the problems that the current vent pipe type diesel engine exhaust heat exchanger needs to occupy the space of a boat body, consumes energy, needs periodic maintenance and the like, the underwater passive cabin integrated cooling and ventilating device is provided.
The technical scheme of the invention is as follows: an underwater passive capsule segment integrated cooling and venting device, comprising: the navigation body shell, be located the inside diesel engine of navigation body shell to and integral type heat exchanger.
The integral heat exchanger includes: a bow plate, a bottom shell and a stern plate; the bow plate, the bottom shell, the stern plate and the inner wall of the navigation body shell are welded into a whole to form a cavity with a half-moon-shaped section; a half-moon-shaped middle front clapboard and a half-moon-shaped middle rear clapboard which divide the cavity into three spaces of a bow part, a middle part and a stern part are welded in the half-moon-shaped cavity, and a penetrating heat exchange tube is arranged between the middle front clapboard and the middle rear clapboard; a seawater inlet flange is welded in the bow space, an air inlet flange communicated with a diesel engine exhaust pipeline is welded below the middle space, an exhaust flange is welded above the middle space, and a seawater discharge pipe communicated with a heat exchange pipe is arranged in the stern space.
The navigation body shell is provided with a vent pipe, an exhaust pipe connected with an exhaust flange is pre-embedded in the vent pipe, and one end of the vent pipe extend out of the water surface to be communicated with the atmosphere; the bottom of the vent pipe is provided with a hole in the flow direction and welded with a seawater drainage pipe, and the seawater drainage pipe is communicated with the heat exchange pipe through a seawater inlet flange.
The working process is as follows:
when the device works, the navigation body submerges below the water surface to work, and the vent pipe extends out of the water surface. When the diesel engine is started, the navigation body is pushed to advance. During the advancing process of the navigation body, seawater is drained through a seawater drainage tube and flows into the heat exchange tube through a seawater inlet flange. When the diesel engine works, air is sucked from the cabin, and the space in the cabin is connected with the atmosphere through a vent pipe. Waste gas of the diesel engine enters the middle part of the integrated heat exchanger through the air inlet flange; the waste gas contacts with the heat exchange pipe in the flowing process and is cooled by the seawater flowing in the pipe, and meanwhile, the waste gas contacts with the outer shell of the navigation body and is cooled by the seawater flowing outside the outer shell of the navigation body. The seawater flows out from the heat exchange pipe, upwards flows into a seawater discharge pipe, and is discharged into the seawater outside the outer shell of the navigation body.
On the basis of the scheme, a tail wing plate is welded on the outer shell of the navigation body and is used for enhancing the navigation stability of the navigation body.
On the basis of above-mentioned scheme, furtherly is equipped with horizontal waste gas baffle in the middle part space, and the waste gas baffle separates the middle part space of integral type heat exchanger for upper and lower two spaces, and after waste gas got into integral type heat exchanger middle part space, under blockking of waste gas baffle, well front portion baffle, drain pan, rear portion baffle in the flow direction upwards got into more than the waste gas baffle, flows to well front portion baffle, upwards gets into the exhaust flange, arranges more than the surface of water through the blast pipe, increases the waste gas flow. The thermal insulation layer is laid below the bottom shell, so that the heat transfer to the cabin is reduced.
On the basis of the scheme, further, an outlet of the seawater discharge pipe is arranged in the back flow direction of the top of the tail wing plate, and a negative pressure area is formed due to the flow of seawater; meanwhile, the outlet position of the seawater discharge pipe is higher than the inlet position of the seawater drainage pipe, and the seawater static pressure at the outlet of the seawater discharge pipe is lower than the seawater static pressure at the inlet of the seawater drainage pipe; furthermore, the inlet of the seawater drainage tube is in the direction of the incident flow, a positive pressure area is formed due to the flowing of seawater, the seawater pressure at the inlet of the seawater drainage tube is far larger than the seawater pressure at the outlet of the seawater discharge tube under the combined action of the above arrangement, the flow and the flow speed of the seawater in the integrated heat exchanger are improved under the action of the pressure difference, the heat exchange quantity with the diesel engine waste gas is increased, and the waste gas cooling effect is improved.
On the basis of above-mentioned scheme, furtherly, because contain moisture in the diesel engine waste gas, form the comdenstion water after the cooling, the gathering is at integral type heat exchanger middle part, designs into double-deck hollow structure with the air inlet flange, and the inner wall is higher than the outer wall, and the gathering can not flow back into inside the diesel engine in the intermediate layer at integral type heat exchanger middle part comdenstion water like this. The condensed water interlayer can also play a role in heat insulation, and the heat of the exhaust gas of the diesel engine is reduced to be transferred towards the cabin through the air inlet flange. The temperature of the condensed water is lower than that of the exhaust gas of the diesel engine, so that the condensed water is heated to boil through heat exchange between the inner wall and the exhaust gas of the diesel engine, the condensed water is changed into water vapor which is automatically discharged from the interlayer, and manual regular maintenance is not needed.
On the basis of the scheme, the diesel engine is further installed in the navigation body shell through the base, and the propeller is driven to rotate through the gear box and the shaft, so that kinetic energy is provided for the navigation body to advance.
Has the advantages that:
(1) The invention can be used for a diesel power propulsion system of a semi-submersible navigation body, a submarine and the like which uses a vent pipe to ventilate, utilizes a positive pressure area and a negative pressure area generated by the flowing of seawater to introduce the seawater into the integrated heat exchanger, cools the waste gas of the diesel engine and then discharges the waste gas out of the cabin, and the waste gas condensate water is automatically processed, thereby improving the economy and the maintainability of the equipment, and the equipment is simple, convenient and expandable and can be manufactured and used.
(2) The integrated heat exchanger is formed by welding the navigation body shell with the bottom shell, the bow plate and the stern plate, and the navigation body shell is used as the shell of the heat exchanger, so that the weight is reduced, and the space is saved.
(3) The invention uses the sailing body shell as the heat exchanger shell, and can simultaneously utilize flowing seawater outside the sailing body to cool the waste gas of the diesel engine, thereby improving the cooling effect.
(4) The seawater drainage tube inlet is arranged on the flow-facing surface of the bottom of the vent pipe, and the opening of the seawater drainage tube is provided with a horn opening. The outlet of the seawater discharge pipe is arranged on the back flow surface at the top of the tail wing plate and is higher than the inlet of the seawater drainage pipe. The pressure difference is formed by utilizing the existing appearance, power is not needed, seawater is introduced into the heat exchanger to cool the waste gas of the diesel engine, and the energy consumption of the navigation body is reduced.
(5) The exhaust flange is designed into a double-layer hollow structure, and the height of the inner wall is higher than that of the outer wall. Can hold the waste gas comdenstion water of backward flow automatically, heated to the automatic discharge of boiling when the isolated waste gas heat of comdenstion water, need not regular manual work and emit the comdenstion water, improved the maintainability.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic structural diagram of an integrated heat exchanger according to the present invention;
FIG. 3 is a schematic cross-sectional view of an integrated heat exchanger according to the present invention;
the marine power generation system comprises a navigation body shell, a sea water drainage pipe, an exhaust pipe, a vent pipe, a diesel engine, an integrated heat exchanger, a sea water drainage pipe, a tail wing plate, a gear box, a shaft 10, a sea water inlet flange 11, a bow plate 12, a middle front partition plate 13, an air inlet flange 14, an exhaust flange 15, a heat exchange pipe 16, a waste gas partition plate 17, a bottom shell 18, a heat insulation layer 19, a middle rear partition plate 20 and a stern plate 21.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1:
referring to fig. 1, an underwater passive cabin integrated cooling and ventilating device comprises: a navigation body housing 1, a diesel engine 5 located inside the navigation body housing 1, and an integrated heat exchanger 6.
The diesel engine 5 is arranged in the navigation body shell 1 through a base, and drives the propeller to rotate through the gear box 9 and the shaft 10 so as to provide kinetic energy for the navigation body to advance. In this example, the flywheel of the diesel engine 5 is connected to the output shaft of the gear box 9 by a high-elastic coupling.
Referring to fig. 2, the integrated heat exchanger 6 includes: a bow plate 7, a bottom shell 18 and a stern plate 21; the bow plate 7, the bottom shell 18 and the stern plate 21 are welded with the inner wall of the navigation body shell 1 into a whole to form a cavity with a half-moon-shaped section; a half-moon-shaped middle-front clapboard 13 and a middle-rear clapboard 20 which divide the cavity into three spaces of a bow part, a middle part and a stern part are welded in the half-moon-shaped cavity, and a heat exchange tube 16 which penetrates through the middle-front clapboard 13 and the middle-rear clapboard 20 is arranged between the middle-front clapboard 13 and the middle-rear clapboard 20; a seawater inlet flange 11 is welded in the bow space, an air inlet flange 14 communicated with a waste gas pipeline of the diesel engine 5 is welded below the middle space, an exhaust flange 15 is welded above the middle space, and a seawater discharge pipe 7 communicated with a heat exchange pipe 16 is arranged in the stern space.
The navigation body outer shell 1 is provided with a vent pipe 4, the vent pipe 4 can be welded on the navigation body outer shell 1, and if the navigation body outer shell is required to be disassembled, the vent pipe can also be connected on the navigation body outer shell 1 in a flange and sealing gasket mode; an exhaust pipe 3 connected with an exhaust flange 15 is embedded in the vent pipe 4, and the vent pipe 4 and one end of the vent pipe 4 extend out of the water surface to be communicated with the atmosphere; the bottom of the vent pipe 4 is provided with a hole in the flow direction and welded with a seawater draft tube 2, and the seawater draft tube 2 is communicated with a heat exchange pipe 16 through a seawater inlet flange 11.
Preferably, an integral tail wing plate 8 is welded on the navigation body shell 1, and the tail wing plate 8 is used for enhancing the navigation stability of the navigation body.
Referring to fig. 3, preferably, a transverse exhaust gas baffle 17 is arranged in the middle space, and the exhaust gas baffle 17 divides the middle space of the integrated heat exchanger 6 into an upper space and a lower space, so as to increase the exhaust gas flow. An insulating layer 19 is coated below the bottom shell 18 to reduce the heat transfer to the cabin.
Preferably, the outlet of the seawater discharge pipe 7 is arranged in the top back flow direction of the tail vane 8, and the outlet position of the seawater discharge pipe 7 is higher than the inlet position of the seawater draft tube 2.
Preferably, the intake flange 14 is designed as a double-layered hollow structure with the inner wall being higher than the outer wall.
Example 2:
the working process of the underwater passive cabin integrated cooling and ventilating device in the embodiment 1 is as follows:
when the navigation device works, the navigation body is submerged below the water surface to work, and the vent pipe 4 extends out of the water surface. When the diesel engine 5 is started, the diesel engine drives the shafting and the propeller to rotate through the gear box, and pushes the navigation body to advance. The casing 1 of the navigation body is provided with a tail wing plate 8 which is used for enhancing the navigation stability of the navigation body;
when the diesel engine 5 works, air is sucked from the cabin, and the air in the cabin is connected with the atmosphere through the vent pipe 4. The waste gas of the diesel engine 5 enters the middle part of the integrated heat exchanger 6 through the air inlet flange 14, flows to the middle rear partition plate 20 under the blocking of the waste gas partition plate 17, the middle front partition plate 13 and the bottom shell 18, upwards enters the waste gas partition plate 17, flows to the middle front partition plate 13, upwards enters the exhaust flange 15 and is discharged to the water surface through the exhaust pipe 3. The flow direction of the exhaust gas in the middle of the integrated heat exchanger 6 is shown by the hollow arrows in fig. 2, and the exhaust gas contacts the heat exchange tubes 16 and is cooled by the seawater flowing in the tubes in the process of flowing in the middle of the integrated heat exchanger 6. The exhaust gas also contacts the hull 1 and is cooled by the flowing seawater outside the hull 1. The bottom shell 18 is coated with a thermal insulation layer 19 to reduce the heat transfer of the exhaust gas into the cabin through the bottom shell 18.
In the advancing process of the navigation body, the bottom of the vent pipe 4 faces the direction of sea current, a sea water drainage pipe 2 is arranged, the sea water drainage pipe 2 is provided with a horn-shaped opening, sea water can be drained to a sea water inlet flange 11 and enters the bow of the integrated heat exchanger 6, then the sea water flows into the heat exchange pipe 6 along a hole on a middle front partition plate 13, and the temperature of the waste gas is higher than that of the sea water due to the fact that the constantly flowing diesel engine waste gas is arranged outside the heat exchange pipe 16, so that the diesel engine waste gas and the sea water are subjected to heat exchange through the pipe wall of the heat exchange pipe 16, the temperature of the diesel engine waste gas is reduced, and the temperature of the sea water is increased. After flowing out from the heat exchange tube 16, the seawater enters the stern part of the integrated heat exchanger 6 along the hole on the middle rear partition plate 20, flows upwards into the seawater discharge pipe 7, and flows out to the seawater outside the navigation body shell 1 along the opening on the tail wing plate 8. The direction of the seawater flow is shown by the solid arrows in figure 2.
The outlet of the seawater discharge pipe 7 is arranged in the back flow direction at the top of the tail wing plate 8, and a negative pressure area is formed due to the flow of seawater; meanwhile, the outlet of the seawater discharge pipe 7 is higher than the inlet of the seawater drainage pipe 2, so that the seawater static pressure at the outlet of the seawater discharge pipe 7 is lower than that at the inlet of the seawater drainage pipe 2; furthermore, the inlet of the seawater draft tube 2 is in the direction of the incident flow, where a positive pressure region is formed due to the flow of seawater. Under the combined action of the above arrangement, the seawater pressure at the inlet of the seawater drainage tube 2 is far greater than the seawater pressure at the outlet of the seawater discharge tube 7, and under the action of the pressure difference, the flow and the flow speed of the seawater in the heat exchanger are improved, the heat exchange quantity with the diesel engine waste gas is increased, and the waste gas cooling effect is improved.
Contain moisture in the diesel engine waste gas, form the comdenstion water after the cooling, the gathering is at 6 middle parts of integral type heat exchanger, consequently designs inlet flange 14 for bilayer structure, and the inner wall is higher than the outer wall, and the gathering can flow into the intermediate layer at 6 middle parts of integral type heat exchanger comdenstion water like this, can not flow backwards inside the diesel engine. The condensed water interlayer can also play a role in heat insulation, and the heat of the exhaust gas of the diesel engine is reduced from being transferred towards the cabin through the air inlet flange 14. The temperature of the condensed water is lower than that of the exhaust gas of the diesel engine, so that the condensed water is heated to boil through heat exchange between the inner wall and the exhaust gas of the diesel engine and is changed into water vapor which is automatically discharged from the interlayer.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. An underwater passive capsule segment integrated cooling and venting device, comprising: the navigation body shell is positioned in the diesel engine inside the navigation body shell; it is characterized by also comprising: an integrated heat exchanger;
the integrated heat exchanger includes: a bow plate, a bottom shell and a stern plate; the bow plate, the bottom shell, the stern plate and the inner wall of the navigation body shell are welded into a whole to form a cavity with a half-moon-shaped section; a half-moon-shaped middle front clapboard and a half-moon-shaped middle rear clapboard which divide the cavity into three spaces of a bow part, a middle part and a stern part are welded in the half-moon-shaped cavity, and a penetrating heat exchange tube is arranged between the middle front clapboard and the middle rear clapboard; a seawater inlet flange is welded in the bow space, an air inlet flange communicated with the diesel engine exhaust pipeline is welded below the middle space, an exhaust flange is welded above the middle space, and a seawater discharge pipe communicated with the heat exchange pipe is arranged in the stern space;
the navigation body shell is provided with a vent pipe, an exhaust pipe connected with the exhaust flange is pre-buried in the vent pipe, and the vent pipe and one end of the vent pipe extend out of the water surface and are communicated with the atmosphere; the bottom of the vent pipe is provided with a hole in the flow direction and welded with a seawater drainage pipe, and the seawater drainage pipe is communicated with the heat exchange pipe through the seawater inlet flange.
2. The underwater passive tank section integrated cooling and ventilating device as claimed in claim 1, wherein a tail wing plate is welded to the sailing body casing.
3. The underwater passive tank section integrated cooling and ventilating device of claim 1, wherein a transverse exhaust baffle is provided in the intermediate space, and a thermal insulation layer is applied under the bottom shell.
4. The underwater passive bay integrated cooling and ventilating device as claimed in claim 2, wherein an outlet of the seawater discharge pipe is provided in a top wake direction of the tail wing plate, and an outlet position of the seawater discharge pipe is higher than an inlet position of the seawater draft tube.
5. The underwater passive tank section integrated cooling and ventilating device as claimed in claim 1, wherein the air intake flange is of a double-layer hollow structure, and the inner wall is higher than the outer wall.
6. The integrated cooling and ventilating device for the underwater passive cabin section as claimed in any one of claims 1 to 5, wherein said diesel engine is mounted in said hull through a base, and drives a propeller to rotate through a gear box and a shaft to provide kinetic energy for the advance of said hull.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211356690.5A CN115892421A (en) | 2022-11-01 | 2022-11-01 | Underwater passive cabin integrated cooling and ventilating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211356690.5A CN115892421A (en) | 2022-11-01 | 2022-11-01 | Underwater passive cabin integrated cooling and ventilating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115892421A true CN115892421A (en) | 2023-04-04 |
Family
ID=86475485
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211356690.5A Pending CN115892421A (en) | 2022-11-01 | 2022-11-01 | Underwater passive cabin integrated cooling and ventilating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115892421A (en) |
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2022
- 2022-11-01 CN CN202211356690.5A patent/CN115892421A/en active Pending
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