CN111516832B - Heat accumulating type cooling system for underwater platform and use method thereof - Google Patents
Heat accumulating type cooling system for underwater platform and use method thereof Download PDFInfo
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- CN111516832B CN111516832B CN202010311329.5A CN202010311329A CN111516832B CN 111516832 B CN111516832 B CN 111516832B CN 202010311329 A CN202010311329 A CN 202010311329A CN 111516832 B CN111516832 B CN 111516832B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
- B63C11/52—Tools specially adapted for working underwater, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
- F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
- F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Other Air-Conditioning Systems (AREA)
Abstract
The invention relates to a heat accumulating type cooling system for an underwater platform and a using method thereof, wherein the heat accumulating type cooling system comprises a fresh water pipeline and a seawater pipeline which are converged in a heat exchanger; the fresh water pipeline comprises a fresh water pump, the input end of the fresh water pump is connected with the heat exchanger, and the output end of the fresh water pump is connected with the heating equipment and the heat storage box in sequence and then is connected with the fresh water pump through a pipeline; a first stop valve and a second stop valve are connected in series on the pipeline, two branches are connected on the pipeline between the two stop valves, one branch is connected to the input end of the heat exchanger and is provided with a third stop valve, and the other branch is connected to the pipeline between the heating equipment and the heat storage tank and is provided with a fourth stop valve; through the configuration of the heat storage box and the corresponding stop valve, the heat storage box can be switched to complete the cooling of the heating equipment when the seawater pipeline is disconnected, and then the seawater pipeline is connected to synchronously cool the heat storage box and the heating equipment; the heat storage tank can also be isolated. The invention effectively solves the problems of hidden danger of seawater entering the cabin due to high deepwater pressure and temperature rise of outboard seawater due to cooling in special periods, and has good service performance and strong practicability.
Description
Technical Field
The invention relates to the technical field of underwater platform cooling systems, in particular to a heat accumulating type cooling system for an underwater platform and a using method thereof.
Background
An underwater platform is a type of equipment that can perform marine scientific research, resource exploration, and perform military tasks under water for long periods and all weather. In order to ensure that a plurality of heating devices on the underwater platform are in a good working state, various devices such as a power system, a cabinet air conditioner, a harmful gas comprehensive purification device and the like need to be cooled.
In the prior art, a sea opening is formed in a pressure shell of an underwater platform of a cooling system, seawater is introduced into a cabin, the seawater exchanges heat with cooling water through a heat exchanger, and the seawater after absorbing the heat is discharged out of the cabin; the cooling mode is simple and efficient, but the cooling system has at least the following problems in the operation process:
firstly, in the working process of the underwater platform, the cooling system needs to continuously introduce seawater into the cabin all the time, once a seawater pipeline is damaged, high-pressure seawater enters the cabin, the safety of personnel and equipment is affected, and even the safety of the whole platform is endangered. Especially in deep sea environment, the danger is more serious as the pressure of seawater increases.
Secondly, the existing cooling system directly discharges the high-temperature seawater after absorbing heat out of the cabin, so that the infrared characteristic of the underwater platform is improved, and the exposure probability of the underwater platform for executing military tasks is increased. For an underwater platform for scientific research, the high-temperature seawater discharged out of the cabin can change the temperature field around the platform, and the underwater scientific research is adversely affected.
Disclosure of Invention
The applicant aims at the defects in the prior art and provides a heat accumulating type cooling system for an underwater platform and a using method thereof, wherein the heat accumulating type cooling system is reasonable in structure, so that the safety of the underwater platform in deep water and the concealment of the underwater platform under special working conditions are greatly improved, the using performance is good, and the practicability is high.
The technical scheme adopted by the invention is as follows:
a heat accumulating type cooling system for an underwater platform comprises a fresh water pipeline and a seawater pipeline, wherein the fresh water pipeline and the seawater pipeline are converged in a heat exchanger;
the fresh water pipeline has the structure that: the fresh water pump comprises a fresh water pump, wherein the input end of the fresh water pump is connected with the output end of a heat exchanger, the output end of the fresh water pump is sequentially connected with a heating device and a heat storage box, and the output end of the heat storage box is connected back to the input end of the fresh water pump through a pipeline; the heat exchanger is characterized in that a first stop valve and a second stop valve are connected to the pipeline in series, two branches are connected to the pipeline between the first stop valve and the second stop valve, one branch is connected to an input end corresponding to the heat exchanger and the other branch is provided with a third stop valve, and the other branch is connected to the pipeline between the heating equipment and the heat storage box and the other branch is provided with a fourth stop valve.
As a further improvement of the above technical solution:
and the heating equipment and the heat storage box are connected in parallel with a bypass, and a stop valve V is installed on the bypass.
And a water tank is connected to the pipeline between the heat exchanger and the fresh water pump through a bypass.
The structure of the heat storage box is as follows: comprises a box body, wherein heat exchange tubes are arranged through two side walls of the box body; the outer parts of the two side walls of the box body are respectively provided with a water collecting chamber, and pipe orifices at two ends of the heat exchange pipe are respectively communicated with the water collecting chambers at two sides; the heat storage material is filled in the box body, and the heat exchange tubes located in the box body are accommodated in the heat storage material.
The heat exchange tubes are arranged in the box body in a serpentine and circuitous manner, the tube orifice at one end of each heat exchange tube is positioned below the side wall at one side of the box body, and the tube orifice at the other end of each heat exchange tube is positioned above the side wall at the other side of the box body;
the structure of the heat exchange tube is as follows: the device comprises a plurality of straight pipes which are arranged in parallel at intervals, wherein two ends of a single straight pipe are respectively communicated with the ends of the adjacent straight pipes through bent pipes, and two straight pipes positioned on two sides are respectively provided with one end communicated with a water collecting chamber on the side wall of a box body; a plurality of fins extend uniformly on the circumferential wall surface of the straight pipe.
A gap is reserved between the top plane of the heat storage material and the inner top surface of the box body; the top of the box body is provided with an exhaust pipe and a feed supplement pipe at intervals, and the bottom of the box body is provided with a discharge pipe; isolation valves are arranged on the exhaust pipe, the material supplementing pipe and the discharge pipe; the box body is made of heat insulation materials.
The heat generating equipment is a plurality of users to be cooled which are connected in parallel.
The structure of the seawater pipeline is as follows: the seawater heat exchanger comprises a seawater pump, wherein the input end of the seawater pump is communicated to a seawater inlet, the output end of the seawater pump is connected to the input end of a heat exchanger, and the corresponding output end of the heat exchanger is communicated to a seawater outlet; side valves are arranged on pipelines between the seawater pump and the seawater inlet and on pipelines between the heat exchanger and the seawater outlet, and cabin penetrating pieces are arranged between pipelines outside the side valves and the underwater platform cabin body.
The heat exchanger comprises two pairs of input and output ends; one pair of input and output ends is connected in the fresh water pipeline, and the other pair of input and output ends is connected in the sea water pipeline.
The use method of the regenerative cooling system for the underwater platform comprises the following steps:
the first step is as follows: when the seawater pipeline is closed, namely the side valve is closed, the third stop valve and the fifth stop valve are closed, and the first stop valve and the second stop valve are opened; under the action of the fresh water pump, the fresh water flows into the water collecting chamber at the lower end of the side wall of the heat storage tank after passing through the heating equipment, the fresh water flows into the heat exchange tube in the box body from the water collecting chamber at the lower end, the fresh water flows along the heat exchange tube in a circuitous way and exchanges heat with the heat storage material in the box body, the fresh water flows out of the water collecting chamber at the upper end, sequentially flows through the second stop valve and the first stop valve and then returns to the output end of the fresh water pump to form a cycle, and; regulating the fresh water flow in the heat storage box through a stop valve IV;
the second step is that: the seawater pipeline is opened, namely when the two side valves are opened, the fifth stop valve, the fourth stop valve and the third stop valve are opened, and the second stop valve is closed; under the action of the fresh water pump, the fresh water synchronously flows through the heat storage box connected with the heating equipment in parallel while passing through the heating equipment, sequentially flows to the input end of the heat exchanger corresponding to the fresh water pipeline after passing through the fourth stop valve and the third stop valve, and flows back to the fresh water pump from the corresponding output end to form a circulation passage; synchronously, external seawater flows to an input end of the heat exchanger corresponding to the seawater pipeline through a seawater inlet and a corresponding side valve, the seawater subjected to heat exchange and temperature rise flows out of a corresponding output end, and the seawater returns to the sea after passing through the other side valve and a seawater outlet; in the process, the fresh water in the fresh water pipeline exchanges heat with the seawater in the seawater pipeline, and the heat storage material in the heat storage box exchanges heat with the fresh water in the fresh water pipeline, so that the heat storage capacity is recovered.
The invention has the following beneficial effects:
the invention has compact and reasonable structure and convenient operation, and can complete the cooling of heating equipment by the heat storage box when the seawater pipeline is disconnected and synchronously cool the heat storage box and the heating equipment when the seawater pipeline is connected through the configuration of the heat storage box and the corresponding stop valve; the heat storage box can be directly isolated when not needed, and only the heating equipment in the fresh water pipeline is directly cooled by the seawater pipeline; thereby effectively solved because of the big problem that has the sea water hidden danger of entering the cabin of deep water pressure to and the outboard sea water problem of heating up that leads to because of the cooling in special period, promoted the security of platform under water in the deep water greatly, and the disguise under its special operating mode, performance is good, and the practicality is strong.
The invention also comprises the following advantages:
in a deep sea environment, the heat storage box stores heat, the seawater pipeline is closed, the possibility of accidents of seawater pipeline damage and seawater entering the cabin is eliminated, and the safety of the underwater platform during deep sea work is improved; for an underwater platform for executing military tasks, the heat storage tank is used for storing heat, a seawater pipeline is isolated, heat is not discharged to the outside of a ship board, the infrared characteristic of the platform is reduced, the exposure probability is reduced, and the battlefield survivability of the platform is improved; when underwater in-situ scientific research is carried out, the heat storage tank is used for storing heat, a seawater pipeline is not used, high-temperature seawater is not discharged, a temperature field near a platform is not disturbed, and the accuracy of scientific research is ensured; the sea pipeline is reserved, after the heat storage tank stores heat, the sea pipeline can be used for cooling the heat storage tank, and the heat storage capacity is recovered, so that the underwater platform can operate in a heat storage cooling mode for multiple times during a task, and the flexibility of the platform in executing the task is improved;
the bypass and the upper stop valve thereof are arranged, so that the heat storage box can be connected with the heating equipment in parallel in the fresh water pipeline for cooling after absorbing heat, and the heat storage box recovers the heat storage capacity;
a gap exists between the top of the heat storage material and the inner top surface of the box body, and the gap is used for compensating the volume fluctuation of the heat storage material in the phase change process;
the box body is made of heat-insulating materials, and the low-temperature state of the heat-storing materials is kept when the heat-storing box is standby so as to maintain the maximum heat-storing capacity; when the heat storage box is put into operation to absorb heat and is at a higher temperature, the heat insulation material is used for preventing the heat from radiating to the cabin to influence the environmental temperature;
the inlet end of the heat exchange tube is positioned below the side surface of the box body, and the outlet end of the heat exchange tube is positioned above the other side surface of the box body, so that the heat storage material in the box body is uniformly heated during heat exchange;
the discharge pipe is used for discharging the heat storage material during maintenance; the material supplementing pipe is used for supplementing heat storage materials in the box body; the exhaust pipe is normally opened when the system operates and is used for compensating pressure fluctuation caused by temperature change in the heat storage box;
the water tank is used for compensating the volume fluctuation of the fresh water caused by the temperature change when the system is operated.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the heat storage tank of the present invention.
Fig. 3 is a schematic structural diagram of the heat exchange tube of the present invention.
Wherein: 1. a fresh water pipeline; 2. a seawater pipeline; 3. a heat exchanger; 10. a pipeline; 11. a water tank; 12. a fresh water pump; 13. a heat generating device; 14. a fifth stop valve; 15. a heat storage tank; 16. a first stop valve; 17. a third stop valve; 18. a stop valve IV; 19. a second stop valve; 20. a bypass; 21. a cabin penetrating piece; 22. a side valve; 23. a sea water pump; 151. a box body; 152. a water collection chamber; 153. a heat exchange pipe; 154. a heat storage material; 155. a discharge pipe; 156. an exhaust pipe; 157. a material supplementing pipe; 158. an isolation valve; 1531. a straight pipe; 1532. bending the pipe; 1533. and a fin.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, the regenerative cooling system for an underwater platform of the present embodiment includes a fresh water pipeline 1 and a sea water pipeline 2, wherein the fresh water pipeline 1 and the sea water pipeline 2 are converged to a heat exchanger 3;
the fresh water pipeline 1 has the structure: the fresh water heat pump device comprises a fresh water pump 12, wherein the input end of the fresh water pump 12 is connected with the output end of a heat exchanger 3, the output end of the fresh water pump 12 is sequentially connected with a heating device 13 and a heat storage box 15, and the output end of the heat storage box 15 is connected back to the input end of the fresh water pump 12 through a pipeline 10; the pipeline 10 is connected with a first stop valve 16 and a second stop valve 19 in series, the pipeline 10 between the first stop valve 16 and the second stop valve 19 is connected with two branches, one branch is connected to the input end corresponding to the heat exchanger 3, the branch is provided with a third stop valve 17, and the other branch is connected to the pipeline between the heating equipment 13 and the heat storage tank 15, and the branch is provided with a fourth stop valve 18.
The fresh water pump 12 is used for driving the circulation of fresh water in the fresh water pipeline 1; through the arrangement of the heat storage box 15 and the corresponding stop valve, the heat storage box 15 can be used for cooling the heating equipment 13 when the seawater pipeline 2 is disconnected, and then the heat storage box 15 and the heating equipment 13 are synchronously cooled when the seawater pipeline 2 is connected; the heat storage box 15 can be directly isolated when not needed, and the seawater pipeline 2 directly cools the heating equipment 13 in the fresh water pipeline 1; thereby effectively solving the problem of hidden danger of seawater entering the cabin due to large deepwater pressure and the problem of temperature rise of outboard seawater caused by cooling in a special period.
A bypass 20 is connected in parallel on the heating device 13 and the heat storage tank 15, and a stop valve five 14 is installed on the bypass 20; the bypass 20 and the upper stop valve five 14 thereof enable the heat storage tank 15 to be connected in parallel with the heat generating equipment 13 in the fresh water pipeline 1 together for cooling after absorbing heat, so that the heat storage tank 15 recovers the heat storage capacity.
The pipeline between the heat exchanger 3 and the fresh water pump 12 is connected with a water tank 11 through a bypass, and the water tank 11 is used for compensating the volume fluctuation of fresh water caused by temperature change when the system operates.
As shown in fig. 2, the heat storage tank 15 has a structure in which: comprises a box body 151, and heat exchange tubes 153 are arranged on two side walls of the box body 151 in a penetrating way; the outside of the two side walls of the box body 151 is provided with water collecting chambers 152, and pipe orifices at two ends of the heat exchange pipe 153 are respectively communicated with the water collecting chambers 152 at two sides; the interior of the case 151 is filled with a heat storage material 154, and the heat exchange tubes 153 located inside the case 151 are accommodated in the heat storage material 154; the heat storage material 154 absorbs and releases heat by its solid-liquid phase change.
The heat exchange tubes 153 are arranged in the box body 151 in a serpentine and roundabout manner, a tube opening at one end of each heat exchange tube 153 is positioned below the side wall of one side of the box body 151, and a tube opening at the other end of each heat exchange tube 153 is positioned above the side wall of the other side of the box body 151; the inlet end and the outlet end of the heat exchange tube 153 are respectively arranged above and below the case 151, and if the inlet end of the heat exchange tube 153 is positioned below the side surface of the case 151 and the outlet end of the heat exchange tube 153 is positioned above the other side surface of the case 151, the heat storage material 154 in the case 151 is uniformly heated during heat exchange.
As shown in fig. 3, the heat exchange pipe 153 has a structure of: the device comprises a plurality of straight pipes 1531 which are arranged in parallel at intervals, wherein two ends of a single straight pipe 1531 are respectively communicated with the ends of the adjacent straight pipes 1531 through bent pipes 1532, and two straight pipes 1531 positioned at two sides are respectively provided with an end communicated with a water collecting chamber 152 on the side wall of a box body 151; a plurality of fins 1533 are uniformly extended from the circumferential wall surface of the straight tube 1531, and the fins 1533 are used to enlarge the contact area between the heat exchange tube 153 and the thermal storage material 154.
A space exists between the top plane of the thermal storage material 154 and the inner top surface of the case 151, the space being used to compensate for the volume fluctuation of the thermal storage material 154 during the phase change; the top of the box body 151 is provided with an exhaust pipe 156 and a feed supplement pipe 157 at intervals, and the bottom of the box body 151 is provided with a discharge pipe 155; the exhaust pipe 156, the feed supplement pipe 157 and the discharge pipe 155 are all provided with an isolation valve 158; the drain pipe 155 is used for draining the heat storage material 154 during maintenance; the replenishing pipe 157 is used for replenishing the heat storage material 154 in the tank 151; the exhaust pipe 156 is normally open during system operation and is used for compensating pressure fluctuation caused by temperature change in the heat storage tank 15; the box 151 is made of a heat insulating material.
The case 151 is made of a heat insulating material, and maintains a low temperature state of the heat storage material 154 to maintain a maximum heat storage capacity when the heat storage case 15 is in standby; when the heat storage box 15 is put into operation to absorb heat and is at a higher temperature, the heat insulation material is used for preventing the heat from radiating to the cabin to influence the ambient temperature.
The heat generating device 13 is a plurality of users to be cooled connected in parallel with each other.
The structure of the seawater pipeline 2 is as follows: the seawater heat exchanger comprises a seawater pump 23, wherein the input end of the seawater pump 23 is communicated to a seawater inlet, the output end of the seawater pump 23 is connected to the input end of a heat exchanger 3, and the corresponding output end of the heat exchanger 3 is communicated to a seawater outlet; side valves 22 are arranged on pipelines between the seawater pump 23 and the seawater inlet and between the heat exchanger 3 and the seawater outlet, and cabin penetrating pieces 21 are arranged between pipelines outside the side valves 22 and the underwater platform cabin body; the seawater pump 23 is used for driving the seawater in the seawater pipeline 2 to flow; the presence of the side valve 22 and the bulkhead 21 serves to ensure the safety of the bulkhead sea water pipeline 2.
The heat exchanger 3 comprises two pairs of input and output ends; one pair of input/output terminals is connected to the fresh water pipeline 1, and the other pair of input/output terminals is connected to the sea water pipeline 2.
The heat accumulating type cooling system of the embodiment has three working states, namely a heat accumulating box 15 isolation state, a heat accumulating box 15 heat accumulating working state and a state of heat accumulating box 15 cooling and heat accumulating capacity recovery according to different working condition requirements.
The use method of the regenerative cooling system for the underwater platform comprises the following steps:
the first step is as follows: when the seawater pipeline 2 is closed, namely the side valve 22 is closed, the stop valve III 17 and the stop valve V14 are closed, and the stop valve I16 and the stop valve II 19 are opened; under the action of the fresh water pump 12, fresh water flows into the water collecting chamber 152 at the lower end of the side wall of the heat storage tank 15 after passing through the heating device 13, the fresh water flows into the heat exchange tubes 153 in the tank body 151 from the water collecting chamber 152 at the lower end, the fresh water performs heat exchange with the heat storage material 154 in the tank body 151 while flowing along the heat exchange tubes 153 in a circuitous manner, the fresh water flows out of the water collecting chamber 152 at the upper end and sequentially flows through the second stop valve 19 and the first stop valve 16 to return to the output end of the water pump 12 to form circulation, and the heat exchange between the; the fresh water flow in the heat storage tank 15 is regulated through the fourth stop valve 18, so that the water temperature at the input end of the fresh water pump 12 is in a proper range, and meanwhile, the heating equipment 13 is in a normal working state;
at this time, the heat storage tank 15 is in a heat storage working state, and is suitable for the situation that the underwater platform is in a deep sea area, or military tasks are executed in an enemy complex sea area, or under the working condition of underwater in-situ scientific research, the seawater pipeline 2 is closed, and heat is discharged into the heat storage tank 15.
The second step is that: when the seawater pipeline 2 is opened, namely two side valves 22 are opened, the five stop valves 14, the four stop valves 18 and the three stop valves 17 are opened, and the second stop valve 19 is closed; under the action of the fresh water pump 12, fresh water synchronously flows through the heat storage box 15 connected with the heating equipment 13 in parallel while passing through the heating equipment 13, the fresh water sequentially flows to the input end of the heat exchanger 3 corresponding to the fresh water pipeline 1 after passing through the fourth stop valve 18 and the third stop valve 17, and the cooled fresh water flows back to the fresh water pump 12 from the corresponding output end to form a circulation passage; synchronously, external seawater flows to the input end of the heat exchanger 3 corresponding to the seawater pipeline 2 through the seawater inlet and the corresponding side valve 22, the seawater subjected to heat exchange and temperature rise flows out from the corresponding output end, and the seawater returns to the sea after passing through the other side valve 22 and the seawater outlet; the fresh water in the fresh water pipeline 1 exchanges heat with the seawater in the seawater pipeline 2, the heat storage box 15 is used as a heating device 13, the heat storage material 154 in the heat storage box 15 exchanges heat with the fresh water in the fresh water pipeline 1, the heat storage material 154 is changed from liquid phase to solid phase, and the heat storage capacity is recovered;
in the process, the flow of the fresh water side of the heat exchanger 3 is adjusted through the opening of the first stop valve 16, so that the water temperature at the input end of the fresh water pump 12 is in a proper range, and the heating equipment 13 is in a normal working state;
at this time, the heat storage tank 15 is in a state of heat dissipation and heat storage capacity recovery, and is suitable for the situation that the underwater platform executes military tasks or underwater in-situ scientific research is finished, or the working condition is that the deep sea returns to a shallow sea area, the heat storage tank 15 after heat storage operates as a heat dissipation user, the heat of the heating device 13 and the heat storage tank 15 is discharged to the outboard through the seawater pipeline 2, and the heat storage tank 15 finally recovers the heat storage capacity.
When the heat storage material 154 returns to the solid state and the temperature thereof decreases to the standby state, the stop valve five 14 is closed to isolate the heat storage tank 15.
The use method of the heat storage tank 15 in the isolated state is as follows:
when the seawater pipeline 2 is opened, namely both the two side valves 22 are opened, the five stop valves 14 and the second stop valves 19 are closed, the fourth stop valves 18 and the third stop valves 17 are opened, at the moment, the heat storage tank 15 is not communicated with the fresh water pipeline 1, and the heat storage tank 15 is in an isolated state; under the action of the fresh water pump 12, fresh water passes through the fresh water pump 12 and the heating equipment 13 and then flows through the fourth stop valve 18 and the third stop valve 17, and the fresh water exchanges heat with the seawater pipeline 2 in the heat exchanger 3 and then returns to the fresh water pump 12 again; in this state, the flow rate of the fresh water side of the heat exchanger 3 can be adjusted by the opening degree of the first stop valve 16.
The state is suitable for the underwater platform in a shallow water area, or the underwater in-situ scientific research and other work is not carried out, or the underwater platform is in a non-combat state, for example, when the underwater platform is in a cruising working condition, the heat storage box 15 of the cooling system is in a standby state, and heat is led out of the cabin by virtue of the seawater pipeline 2.
In a deep sea environment, the heat storage box 15 stores heat, the seawater pipeline 2 is closed, the possibility of accidents of seawater pipeline damage and seawater entering the cabin is eliminated, and the safety of the underwater platform during deep sea work is improved; for an underwater platform for executing military tasks, the heat storage tank 15 is used for storing heat, the seawater pipeline 2 is isolated, heat is not discharged to the outside of the ship, the infrared characteristic of the platform is reduced, the exposure probability is reduced, and the battlefield survivability of the platform is improved; when underwater in-situ scientific research is carried out, the heat storage box 15 is used for storing heat, the seawater pipeline 2 is not used, high-temperature seawater is not discharged, a temperature field near a platform is not disturbed, and the accuracy of scientific research is ensured; the sea pipeline is reserved, after the heat storage box 15 stores heat, the sea pipeline 2 can be used for cooling the sea pipeline, the heat storage capacity is recovered, the underwater platform can operate in a heat storage cooling mode for many times during a task, and the flexibility of the platform for executing the task is improved.
The underwater platform is compact and reasonable in structure, the safety of the underwater platform in deep water and the concealment of the underwater platform under special working conditions are greatly improved, the practicability is high, and the flexibility is high.
The above description is intended to be illustrative and not restrictive, and the scope of the invention is defined by the appended claims, which may be modified in any manner within the scope of the invention.
Claims (10)
1. A regenerative cooling system for an underwater platform, comprising a fresh water pipeline (1) and a sea water pipeline (2), characterized in that: the fresh water pipeline (1) and the seawater pipeline (2) are converged in the heat exchanger (3);
the fresh water pipeline (1) has the structure that: the fresh water pump (12) is included, the input end of the fresh water pump (12) is connected with the output end of the heat exchanger (3), the output end of the fresh water pump (12) is sequentially connected with a heating device (13) and a heat storage box (15), and the output end of the heat storage box (15) is connected back to the input end of the fresh water pump (12) through a pipeline (10); the pipeline (10) is connected with a first stop valve (16) and a second stop valve (19) in series, the pipeline (10) between the first stop valve (16) and the second stop valve (19) is connected with two branches, one branch is connected to an input end corresponding to the heat exchanger (3) and the branch and is provided with a third stop valve (17), and the other branch is connected to a pipeline between the heating equipment (13) and the heat storage box (15) and is provided with a fourth stop valve (18).
2. A regenerative cooling system for an underwater platform as claimed in claim 1, wherein: and the heating equipment (13) and the heat storage box (15) are connected in parallel with a bypass (20) together, and a stop valve five (14) is installed on the bypass (20).
3. A regenerative cooling system for an underwater platform as claimed in claim 1, wherein: and a water tank (11) is connected to a pipeline between the heat exchanger (3) and the fresh water pump (12) through a bypass.
4. A regenerative cooling system for an underwater platform as claimed in claim 1, wherein: the structure of the heat storage box (15) is as follows: comprises a box body (151), and heat exchange tubes (153) are arranged on two side walls of the box body (151) in a penetrating way; water collecting chambers (152) are respectively arranged outside two side walls of the box body (151), and pipe openings at two ends of the heat exchange pipe (153) are respectively communicated with the water collecting chambers (152) at two sides; the interior of the box body (151) is filled with a heat storage material (154), and the heat exchange tubes (153) positioned inside the box body (151) are accommodated in the heat storage material (154).
5. A regenerative cooling system for an underwater platform as claimed in claim 4, wherein: the heat exchange tubes (153) are arranged in the box body (151) in a serpentine and roundabout manner, a tube opening at one end of each heat exchange tube (153) is positioned below the side wall of one side of the box body (151), and a tube opening at the other end of each heat exchange tube (153) is positioned above the side wall of the other side of the box body (151);
the structure of the heat exchange tube (153) is as follows: the device comprises a plurality of straight pipes (1531) which are arranged in parallel at intervals, wherein two ends of a single straight pipe (1531) are respectively communicated with the ends of the adjacent straight pipes (1531) through bent pipes (1532), and two straight pipes (1531) positioned at two sides are respectively provided with one end communicated with a water collecting chamber (152) on the side wall of a box body (151); a plurality of fins (1533) extend uniformly on the circumferential wall surface of the straight tube (1531).
6. A regenerative cooling system for an underwater platform as claimed in claim 4, wherein: a space is reserved between the top plane of the heat storage material (154) and the inner top surface of the box body (151); the top of the box body (151) is provided with an exhaust pipe (156) and a feeding pipe (157) at intervals, and the bottom of the box body (151) is provided with a discharge pipe (155); the exhaust pipe (156), the feed supplementing pipe (157) and the discharge pipe (155) are all provided with an isolation valve (158); the box body (151) is made of heat-insulating materials.
7. A regenerative cooling system for an underwater platform as claimed in claim 1, wherein: the heat generating equipment (13) is a plurality of users to be cooled which are connected in parallel.
8. A regenerative cooling system for an underwater platform as claimed in claim 1, wherein: the structure of the seawater pipeline (2) is as follows: the seawater heat exchanger comprises a seawater pump (23), wherein the input end of the seawater pump (23) is communicated to a seawater inlet, the output end of the seawater pump (23) is connected to the input end of a heat exchanger (3), and the corresponding output end of the heat exchanger (3) is communicated to a seawater outlet; side valves (22) are installed on pipelines between the seawater pump (23) and a seawater inlet and between the heat exchanger (3) and a seawater outlet, and cabin penetrating pieces (21) are installed between pipelines outside the side valves (22) and the underwater platform cabin body.
9. A regenerative cooling system for an underwater platform as claimed in claim 1, wherein: the heat exchanger (3) comprises two pairs of input and output ends; one pair of input and output ends is connected in the fresh water pipeline (1), and the other pair of input and output ends is connected in the seawater pipeline (2).
10. A method of using the regenerative cooling system for a subsea platform of claim 2, comprising: the method comprises the following steps:
the first step is as follows: when the seawater pipeline (2) is closed, namely the side valve (22) is closed, the stop valve III (17) and the stop valve V (14) are closed, and the stop valve I (16) and the stop valve II (19) are opened; under the action of the fresh water pump (12), fresh water flows into the water collecting chamber (152) at the lower end of the side wall of the heat storage tank (15) after passing through the heating equipment (13), flows into the heat exchange tube (153) in the box body (151) from the water collecting chamber (152) at the lower end, exchanges heat with the heat storage material (154) in the box body (151) while flowing along the heat exchange tube (153) in a circuitous way, flows out of the water collecting chamber (152) at the upper end, sequentially flows through the stop valve II (19) and the stop valve I (16), and then returns to the output end of the fresh water pump (12) to form circulation, so that the heat exchange between the heating equipment (13) and the heat storage material; the fresh water flow in the heat storage tank (15) is regulated through a stop valve IV (18);
the second step is that: the seawater pipeline (2) is opened, namely when the two side valves (22) are opened, the five (14), the four (18) and the three (17) stop valves are opened, and the two (19) stop valves are closed; under the action of the fresh water pump (12), fresh water synchronously flows through the heat storage box (15) connected with the heating equipment (13) in parallel while passing through the heating equipment (13), flows to the input end of the heat exchanger (3) corresponding to the fresh water pipeline (1) after sequentially passing through a fourth stop valve (18) and a third stop valve (17), and flows back to the fresh water pump (12) from the corresponding output end to form a circulation passage; synchronously, external seawater flows to the input end of the heat exchanger (3) corresponding to the seawater pipeline (2) through a seawater inlet and the corresponding side valve (22), the seawater subjected to heat exchange and temperature rise flows out from the corresponding output end, and the seawater returns to the sea after passing through the other side valve (22) and the seawater outlet; in this process, the fresh water in the fresh water pipeline (1) exchanges heat with the seawater in the seawater pipeline (2), and the heat storage material (154) inside the heat storage tank (15) exchanges heat with the fresh water in the fresh water pipeline (1), thereby recovering the heat storage capacity.
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| CN114030580A (en) * | 2021-11-25 | 2022-02-11 | 中国船舶科学研究中心 | Inter-board cooling system of multi-shell underwater unmanned aircraft |
| CN116331457B (en) * | 2022-11-30 | 2024-02-09 | 深海技术科学太湖实验室 | Thermal energy management system for deep sea manned platform and fresh water circulation heating method |
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