CN112414191A - Immersion type floating disc large-scale water tank heat storage system - Google Patents
Immersion type floating disc large-scale water tank heat storage system Download PDFInfo
- Publication number
- CN112414191A CN112414191A CN202011291038.0A CN202011291038A CN112414191A CN 112414191 A CN112414191 A CN 112414191A CN 202011291038 A CN202011291038 A CN 202011291038A CN 112414191 A CN112414191 A CN 112414191A
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- heat insulation
- floating
- water tank
- traction
- heat
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
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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
Abstract
The invention discloses a heat storage system of an immersed floating plate large-scale water tank, which comprises an immersed heat insulation floating plate, a floating plate drive device and a heat storage and release electric control system; the immersion type heat insulation floating disc comprises a heat insulation baffle plate, the space in the water tank is divided into a cold water space and a hot water space by the heat insulation baffle plate, and a sealing structure is arranged between the heat insulation baffle plate and the side wall of the water tank; the floating disc traction device comprises a traction rope, the traction rope is connected with the heat insulation baffle through the floating disc fixing structure, and the traction rope is connected with the rotating device; the heat accumulation and discharge electric control system comprises an information collector, an operation controller, a communication converter and a computer terminal. Original oblique warm layer in the jar has been replaced by thermal-insulated floating plate, not only can further promote the heat accumulation space of water pitcher, and the hot and cold water difference in temperature in the jar can further enlarge under the thermal-insulated effect of immersive floating plate moreover, can further promote jar interior hydrothermal utilization efficiency.
Description
Technical Field
The invention relates to application of a large-scale heat storage water tank in an energy storage direction, in particular to a heat storage system of an immersed floating plate large-scale water tank.
Background
The main development trend of the current power industry is that the power generation is carried out by utilizing clean energy such as solar energy, wind energy and the like, but the wind energy and the light energy are greatly influenced by weather factors, and the characteristics of fluctuation and instability in energy utilization are achieved. Therefore, the phenomena of wind abandoning and light abandoning are serious under the continuous and stable power supply requirement of the power grid, and the development of the field is seriously restricted. The method has the advantages that the peak regulation of electric energy is carried out by utilizing thermal power generation, the fluctuation influence on a power grid when new energy is connected to the grid can be eliminated, and the method has the characteristics of high response speed, no time and space limitation and the like.
However, in the north, especially in winter, the thermal power plant needs to undertake the dual tasks of power supply and heat supply, and under the influence of the policy of 'fixing power by heat' for heat supply, the peak regulation capacity of the thermal power plant is greatly reduced. The applicant finds that the coupling relation between heat and electricity can be well reduced by additionally arranging the large-scale heat storage water tank in the cogeneration unit, and when the new energy is sufficient in power generation, enough space is provided for the new energy to be networked by reducing the output of thermal power.
The traditional large-scale heat storage water tank is divided into a cold and hot water double tank, a mixing tank, a thermocline single tank and the like. The thermocline single tank becomes a research hotspot in the field due to the characteristics of low investment cost, high heat storage efficiency, small occupied area and the like. The large-scale thermocline heat storage water tank realizes the single-tank operation mode of hot water in the upper part and cold water in the lower part by using the density difference between the cold water and the hot water, and greatly saves the space for water storage.
The transition layer between the cold water and the hot water is also called as a thermocline, and directly determines the available volume of the water tank to a certain extent. According to the related research at present, the inclined temperature layers in the lower tanks of different water distributor types can be controlled to be about 0.5-1 m, and for a large inclined temperature layer heat storage water tank, the available volume loss caused by the inclined temperature layers in the tanks is still a technical limitation which is difficult to break through in the field.
Disclosure of Invention
The invention aims to provide an immersion type floating plate large-scale water tank heat storage system, which solves the problem of available volume loss caused by a thermocline between cold water and hot water in a large-scale heat storage water tank and realizes high-efficiency operation of the heat storage water tank.
The purpose of the invention is realized by the following technical scheme:
the invention relates to a heat storage system of an immersed floating plate large-scale water tank, which comprises an immersed heat insulation floating plate, a floating plate driving device and a heat storage and release electric control system;
the immersion type heat insulation floating disc comprises a heat insulation baffle, the space in the water tank is divided into a cold water space and a hot water space by the heat insulation baffle, and a sealing structure is arranged between the heat insulation baffle and the side wall of the water tank;
the floating disc traction device comprises a traction rope, the traction rope is connected with the heat insulation baffle through a floating disc fixing structure, and the traction rope is connected with the rotating device;
the heat accumulation and release electric control system comprises an information collector, an operation controller, a communication converter and a computer terminal.
According to the technical scheme provided by the invention, the heat storage system of the large submerged floating plate water tank provided by the embodiment of the invention is controlled by the heat storage and release electric control system, the submerged heat insulation floating plate rises and falls along with the heat storage and release process of the water tank under the traction of the traction structure, and the heat insulation floating plate replaces the original inclined temperature layer in the tank, so that the heat storage space of the water tank can be further improved, the temperature difference between cold water and hot water in the tank can be further expanded under the heat insulation effect of the submerged floating plate, and the utilization efficiency of hot water in the tank can be further improved.
Drawings
Fig. 1 is a schematic structural diagram of a heat storage system of an immersed floating-plate large-scale water tank provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of an embodiment of an immersion-type floating plate structure;
FIG. 3 is a schematic diagram of a gear type dragging structure according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a pulley type pulling structure according to an embodiment of the present invention;
FIG. 5 is a schematic drawing of the floating plate in a towing position according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in further detail below. Details which are not described in detail in the embodiments of the invention belong to the prior art which is known to the person skilled in the art.
The invention discloses a heat storage system of an immersed floating plate large-scale water tank, which has the following preferred specific implementation modes:
comprises an immersion type heat insulation floating disc, a floating disc drive device and a heat accumulation and discharge electric control system;
the immersion type heat insulation floating disc comprises a heat insulation baffle, the space in the water tank is divided into a cold water space and a hot water space by the heat insulation baffle, and a sealing structure is arranged between the heat insulation baffle and the side wall of the water tank;
the floating disc traction device comprises a traction rope, the traction rope is connected with the heat insulation baffle through a floating disc fixing structure, and the traction rope is connected with the rotating device;
the heat accumulation and release electric control system comprises an information collector, an operation controller, a communication converter and a computer terminal.
The heat insulation floating disc is made of heat insulation materials with the density similar to that of water, and one side of the sealing structure, which faces the side wall of the water tank, is of a pointed-end sweeping type structure.
The floating disc dragging structure is a gear type dragging structure or a pulley type dragging structure;
the gear type traction structure comprises a single traction rope, two ends of the single traction rope are respectively connected with a group of gears which are meshed with each other, and the middle part of the single traction rope is connected with the heat insulation baffle through a floating disc fixing structure;
the pulley type traction structure comprises traction ropes which are circularly connected and pass around two fixed pulleys, and when the two traction ropes which are parallel to each other pass through the heat insulation baffle, one of the two traction ropes is connected with the heat insulation baffle through the floating disc fixing structure.
The heat insulation baffle is connected with the traction rope at three or four positions.
The information collector is responsible for collecting information such as flow velocity, flow and water temperature of the water tank inlet and outlet;
the communication converter is responsible for converting and processing the data measured by the information collector and transmitting the data to the computer terminal, and simultaneously transmitting the control information fed back by the computer terminal to the operation controller;
the computer terminal is a manual control part and is responsible for displaying and outputting the operation information of the water tank, and provides a control signal for the system according to related instruction information by combining the actual heat accumulation and release process of the water tank;
the operation controller is responsible for applying a control signal output by the computer terminal machine to a rotating device of the traction system, and the height of the heat insulation baffle is raised and lowered according to actual requirements by controlling the rotating direction and the rotating speed of the rotating device, so that the heat storage and heat release processes of the water tank are realized.
The heat storage system of the large submerged floating plate water tank is characterized in that the submerged floating plate with a certain thickness and strong heat insulation capability is additionally arranged in the tank and is used for separating cold water and hot water in the tank. The immersion type floating disc is controlled by an electric control system and moves up and down along with the heat storage and release process of the water tank. The design not only can further promote the available space inside the water tank, but also solves the problem of available volume loss caused by the inclined temperature layer in the large-scale heat storage water tank because the cold and hot water layering is not influenced by the inlet and the outlet of the water tank any more, and can further reduce the investment cost of the water distributor in the tank.
The invention is controlled by the heat accumulation and release electric control system, and the immersion type heat insulation floating disc ascends and descends along with the heat accumulation and release process of the water tank under the traction of the traction structure. Because thermal-insulated floating plate has replaced the original inclined temperature layer in the jar, not only can further promote the heat accumulation space of water pitcher, the hot and cold water difference in temperature in the jar can further enlarge under the thermal-insulated effect of immersive floating plate moreover, can further promote jar interior hydrothermal utilization efficiency.
The submerged floating plate in the tank is made of a material with a water density close to that of water and a good heat insulation property (the relative density of water is assumed to be 1). Materials with a slightly higher density than water, for example: ABS resin (relative density 1.02-1.08) and a cement board (relative density 1.2); materials that are somewhat less dense than water, such as: high density polyethylene (relative density 0.95), low density polyethylene (relative density 0.92), pure rubber (relative density 0.93) and the like, all have good heat insulation performance, and can not generate obvious floating and sinking phenomena in water. And the 'sweeping type' sealing structure which can ascend and descend along with the floating disc is adopted between the periphery of the floating disc and the wall of the tank, the structure not only can effectively isolate cold water and hot water in the tank, but also can further fix the floating disc in the tank when the floating disc is static.
The invention provides two floating disc fixing structures, one is a gear type traction structure adopting one traction rope, and the other is a pulley type traction structure adopting two traction ropes. In the gear type dragging structure, the dragging rope and the floating disc are completely fixed, and the floating disc is lifted and lowered by the positive rotation and the negative rotation of the gears through the gear structures which are arranged on the inner wall surfaces of the tank top and the tank bottom and are meshed with each other in pairs. In the pulley type dragging structure, the dragging structure needs two mutually parallel dragging ropes with opposite dragging directions, one of the dragging ropes is fixed with the floating disc, and the other dragging rope freely passes through the floating disc.
In order to keep the submerged floating plate horizontal in the tank, the invention provides two traction schemes, one scheme adopts three traction ropes, and the other scheme adopts four traction ropes.
The specific embodiment is as follows:
as shown in figure 1, the heat storage system of the large submerged floating-tray water tank provided by the invention comprises a submerged heat-insulating floating tray, a floating-tray driving structure and a heat storage and release electric control system. The immersion type heat insulation floating disc consists of a heat insulation baffle and a sealing structure; the floating disc traction structure consists of a floating disc fixing structure, a traction rope and a rotating device; the heat accumulating and releasing electric control system consists of information collector, operation controller, communication converter and computer terminal.
As shown in fig. 2, the submerged floating plate structure proposed by the present invention is composed of a heat insulation baffle and a sealing structure. Wherein, the heat insulation floating plate is made of a material with the density similar to that of water and better heat insulation performance; the sealing structure is a pointed-end sweeping type structure, so that cold water and hot water in the tank can be well isolated, and a certain supporting effect is formed on the floating plate through friction force between the floating plate and the wall of the tank when the floating plate operates statically.
As shown in figures 3 and 4, the floating disc dragging structure provided by the invention consists of a floating disc fixing structure, a traction rope and a rotating device. The gear type dragging structure proposed in fig. 3 is composed of a single dragging rope and two groups of gears meshed with each other, and the meshed gears rotate in opposite directions to each other to drive the floating disc to ascend and descend. The pulley type traction structure provided in fig. 4 is composed of a traction rope and two fixed pulleys which are connected in a circulating manner, two traction ropes which are parallel to each other adopt a fixed and unfixed connection mode when passing through the floating plate, and the floating plate is driven to ascend and descend by the unified rotation of the pulleys.
As shown in fig. 5, in order to keep the submerged floating plate horizontal in the tank during ascent and descent without tilting, the present invention provides two traction schemes, one using three traction ropes and one using four traction ropes. The stability problem of the traction system is considered in both schemes, and comprehensive judgment and selection can be carried out according to the running stability of the floating disc and the economy of the traction system in actual running.
Next, the actual operation of the system will be described in detail with reference to the heat storage and release process of the large-scale heat storage water tank:
in the heat storage process, circulating water of the heat supply network heated by the air exhaust of the unit enters from a water inlet pipe at the top of the tank body, cold water below the partition plate is discharged from a water outlet pipe at the bottom of the tank body and enters the water return side in the middle of the heat supply network, and the submerged floating plate in the tank gradually moves downwards along with the increase of hot water and the decrease of cold water in the tank. In the process, the information acquisition system collects and processes the information such as fluid temperature, flow velocity and the like at the inlet and the outlet of the water tank through monitoring the fluid temperature, the flow velocity and the like at the inlet and the outlet of the water tank, and sends instruction information to the controller, and the operation controller drives the floating disc in the tank to move downwards according to the moving speed of the cold and hot water layers by controlling the inward interactive rotation of the gear type driving device in the floating disc traction system or the anticlockwise rotation of the pulley type driving device.
In the heat release process, cold water from the backwater side of the heat supply network enters from a water inlet pipe at the bottom of the tank body, hot water above the partition plate is discharged from a water outlet pipe positioned at the top of the tank body and enters the heat supply network for normal heat supply, and the submerged floating disc in the tank gradually moves upwards along with the increase of the cold water and the reduction of the hot water in the tank. In the process, the information collector collects and processes the information of fluid temperature, flow velocity and the like at the inlet and the outlet of the water tank through the communication converter and the computer terminal, and sends instruction information to the controller, and the operation controller drives the floating disc in the tank to move upwards according to the moving speed of the cold and hot water layers by controlling the outward interactive rotation of the gear type driving device in the floating disc traction system or the clockwise rotation of the pulley type driving device.
The invention is applied to the heat storage system of the large single-tank heat storage water tank, and utilizes the good heat insulation performance of the immersion type floating plate to realize high-efficiency layering of cold water and hot water in the tank. The floating disc driving system enables the floating disc in the tank to ascend and descend at a certain speed by executing the instruction of the heat accumulation and release electric control system, and dynamic heat insulation layering between cold water and hot water is guaranteed. The heat accumulation and discharge electric control system automatically controls the direction and the speed of the floating disc traction system by acquiring the operating parameters of the fluid in the tank. The invention not only can solve the problem of the loss of the available volume of the water tank caused by the inclined temperature layer in the tank in the layered heat storage water tank, but also can further improve the temperature difference between cold water and hot water in the tank due to the good heat insulation capability of the floating plate, so that the utilization degree of the hot water stored in the tank is further improved. In addition, the heat insulation effect between the cold water and the hot water is not limited by the running and distribution conditions of the cold water and the hot water in the tank any more, so that part of investment for an inlet-outlet water distributor can be further saved, and the construction cost of a large-scale heat storage water tank is further reduced.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. An immersed floating plate large-scale water tank heat storage system is characterized by comprising an immersed heat insulation floating plate, a floating plate driving device and a heat storage and release electric control system;
the immersion type heat insulation floating disc comprises a heat insulation baffle, the space in the water tank is divided into a cold water space and a hot water space by the heat insulation baffle, and a sealing structure is arranged between the heat insulation baffle and the side wall of the water tank;
the floating disc traction device comprises a traction rope, the traction rope is connected with the heat insulation baffle through a floating disc fixing structure, and the traction rope is connected with the rotating device;
the heat accumulation and release electric control system comprises an information collector, an operation controller, a communication converter and a computer terminal.
2. The submerged floating-tray pitcher thermal storage system of claim 1, wherein the insulating floating tray is made of a water-tight insulating material and the side of the sealing structure facing the side wall of the pitcher is a cusp-sweeping structure.
3. The submerged large-scale water tank heat storage system with floating plate according to claim 1, wherein the floating plate dragging structure is a gear type dragging structure or a pulley type dragging structure;
the gear type traction structure comprises a single traction rope, two ends of the single traction rope are respectively connected with a group of gears which are meshed with each other, and the middle part of the single traction rope is connected with the heat insulation baffle through a floating disc fixing structure;
the pulley type traction structure comprises traction ropes which are circularly connected and pass around two fixed pulleys, and when the two traction ropes which are parallel to each other pass through the heat insulation baffle, one of the two traction ropes is connected with the heat insulation baffle through the floating disc fixing structure.
4. The submerged floating platform pitcher thermal storage system of claim 1, wherein the thermal barrier is connected to the tow rope in three or four locations.
5. The submerged floating platform pitcher thermal storage system of any one of claims 1 to 4, wherein:
the information collector is responsible for collecting information such as flow velocity, flow and water temperature of the water tank inlet and outlet;
the communication converter is responsible for converting and processing the data measured by the information collector and transmitting the data to the computer terminal, and simultaneously transmitting the control information fed back by the computer terminal to the operation controller;
the computer terminal is a manual control part and is responsible for displaying and outputting the operation information of the water tank, and provides a control signal for the system according to related instruction information by combining the actual heat accumulation and release process of the water tank;
the operation controller is responsible for applying a control signal output by the computer terminal machine to a rotating device of the traction system, and the height of the heat insulation baffle is raised and lowered according to actual requirements by controlling the rotating direction and the rotating speed of the rotating device, so that the heat storage and heat release processes of the water tank are realized.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211365184.2A CN115789755A (en) | 2020-11-18 | 2020-11-18 | Immersion type floating disc large-scale water tank heat storage system |
| CN202011291038.0A CN112414191A (en) | 2020-11-18 | 2020-11-18 | Immersion type floating disc large-scale water tank heat storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011291038.0A CN112414191A (en) | 2020-11-18 | 2020-11-18 | Immersion type floating disc large-scale water tank heat storage system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211365184.2A Division CN115789755A (en) | 2020-11-18 | 2020-11-18 | Immersion type floating disc large-scale water tank heat storage system |
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| CN112414191A true CN112414191A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011291038.0A Pending CN112414191A (en) | 2020-11-18 | 2020-11-18 | Immersion type floating disc large-scale water tank heat storage system |
| CN202211365184.2A Pending CN115789755A (en) | 2020-11-18 | 2020-11-18 | Immersion type floating disc large-scale water tank heat storage system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211365184.2A Pending CN115789755A (en) | 2020-11-18 | 2020-11-18 | Immersion type floating disc large-scale water tank heat storage system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201184766Y (en) * | 2007-12-13 | 2009-01-21 | 上海理工大学 | Apparatus for separating cold water and hot water |
| CN102003820A (en) * | 2010-12-13 | 2011-04-06 | 东南大学 | Dual-layer adjustable solar energy heat accumulation device |
| CN104296295A (en) * | 2014-10-21 | 2015-01-21 | 广州数科节能技术有限公司 | Water cold storage tank control device |
| CN110763063A (en) * | 2019-01-24 | 2020-02-07 | 中船第九设计研究院工程有限公司 | Heat storage device for balance of production |
| CN210512789U (en) * | 2019-09-27 | 2020-05-12 | 中国石油大学(华东) | Heat-insulating turbulence-preventing energy-saving device for thermocline in heat storage tank |
-
2020
- 2020-11-18 CN CN202011291038.0A patent/CN112414191A/en active Pending
- 2020-11-18 CN CN202211365184.2A patent/CN115789755A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201184766Y (en) * | 2007-12-13 | 2009-01-21 | 上海理工大学 | Apparatus for separating cold water and hot water |
| CN102003820A (en) * | 2010-12-13 | 2011-04-06 | 东南大学 | Dual-layer adjustable solar energy heat accumulation device |
| CN104296295A (en) * | 2014-10-21 | 2015-01-21 | 广州数科节能技术有限公司 | Water cold storage tank control device |
| CN110763063A (en) * | 2019-01-24 | 2020-02-07 | 中船第九设计研究院工程有限公司 | Heat storage device for balance of production |
| CN210512789U (en) * | 2019-09-27 | 2020-05-12 | 中国石油大学(华东) | Heat-insulating turbulence-preventing energy-saving device for thermocline in heat storage tank |
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| CN115789755A (en) | 2023-03-14 |
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Application publication date: 20210226 |