Background technology
Storage heater is the equipment stored heat energy, and existing storage heater is steam type and liquid heat storage device;
In industrial energy saving field, waste heat is carried out reclaiming and storing, usually adopt phase change technique to carry out accumulation of heat, adopt in low temperature field ice-reserving technology to realize accumulation of heat;
In field of solar energy, adopt fuse salt accumulation of heat, although fuse salt can realize the storage of high temperature, but due to its need from Solid State Transformation be liquid, thus heat energy is needed to be heated, the simultaneously toxicity of fuse salt, economical, security also has problems, and the use of thus fuse salt accumulation of heat is restricted.
In field of solar energy, also adopt air or other gas to carry out accumulation of heat, but its hot melt is little, cannot realize large-scale thermal energy storage.
Storage station adopts electric energy to store, particularly the electric energy of wind-powered electricity generation and photovoltaic composition, and because it cannot realize storing, a large amount of abandoning of thus having to, causes a large amount of wastes.If adopt heat energy to store, need the holder possessing powerful storage capacity.
In power station and thermal-storage heating application, need large-scale storage heater, usually reach 500GJ-1000GJ, the accumulation of heat that during large like this storage heater, multiple acquisition system and heat exchanger realize, thus needs to realize large-scale heat storage technology.
Summary of the invention
The object of this invention is to provide a kind of combination segmentation charge and discharge thermal control system of storage heater, the segmentation of different storage heater can be realized, combination, grouping, integrated accumulation of heat, heat exchange, use, be suitable for the temperature of 10-1500 degree, heat storage capacity can meet or exceed 500GJ-1000GJ accumulation of heat, the present invention is directed to dissimilar storage heater, be provided with the pipeline of a closed circulation, storage heater is connected, storage heater can carry out being connected the abundant and heat release of rear realization by importing and exporting with closed loop pipeline, be in closed condition to different storage heater valves just can realize filling heat or heat release to the combination of storage heater or the carrying out of segmentation.
Concrete summary of the invention is as follows:
The combination segmentation charge and discharge hot closed-loop control system of storage heater, comprises storage heater, circulating pump, fluid tank, housing etc., it is characterized in that: at least one fluid tank and a circulating pump and at least one closed loop circulating line; At least two storage heaters, a high-temperature heat accumulation device is for filling thermal regenerator device, a low-temperature heat accumulating device is heat release storage heater, high-temperature heat accumulation device provides heat energy for low-temperature heat accumulating device, storage heater is provided with a fluid to carry out and fluid issuing, the import of storage heater and outlet are connected with closed loop circulation pipe, the import of each storage heater and exit and closed loop circulation pipe upper inlet with export be connected between be provided with a valve, can be circulated by Valve controlling fluid or not circulate; Fluid storage is in fluid tank, and circulating pump can drive fluid flow along closed loop circulating line.
In the charge and discharge thermal process of carrying out storage heater, the import of filling thermal regenerator device of high temperature and outlet are opened, the import of the heat release storage heater of low temperature and outlet are opened simultaneously, the fluid in circulating pump drive fluid case is utilized to circulate, high temperature to be filled in thermal regenerator device heat energy by fluid communication in low-temperature heat accumulating device, realizes the exchange of heat energy.
Multiple storage heater is in charge and discharge thermal process, open the terminal valve of storage heater, just can realize the charge and discharge heat of storage heater, when storage heater does not need charge and discharge heat, storage heater import and gate out switch are closed, open the valve on closed loop circulating line simultaneously, storage heater just can be made not carry out charge and discharge heat, charge and discharge thermal control is carried out in combination or the segmentation that can realize storage heater like this.
Described storage heater, according to used heat-storing material, select from following one or more:
A, solid grain block storage heater: comprise the storage heater that all use solid grain blocks are heat-storing material;
B, fluid heat accumulating device: comprise all use liquid, gas, plasma, overcritical body as the storage heater of heat-storing material;
C, fuse salt storage heater: comprise the storage heater of all employing fuse salts as heat-storing material;
D, liquid metal storage heater: comprise the storage heater of all employing liquid metals as heat-storing material;
E, concrete storage heater: the storage heater comprising all employing concrete heat-storing materials;
F, ceramic heat-storing device: comprise all potteries that adopts for the storage heater of heat-storing material.
Be provided with multiple fluid tank and multiple circulating pump, each fluid tank and circulating pump group can independent operatings, can realize completing with this group storage heater independently filling heat or heat release.
Filling on heat or heat release import or export pipeline of each storage heater is provided with one group of fluid tank and circulating pump, and often group can fill thermal regenerator device and heat release storage heater carries out charge and discharge heat or heat release management by one.
Described fluid select following one or more: liquid, gas, plasma, overcritical body, liquid metal, fuse salt.
Also be provided with fluid heating, fluid is carried out heat exchange, fluid heating selects following one:
A, boilers heated electrically equipment;
B, microwave equipment;
C, high frequency Huo Zhong Frequency equipment;
D, electroacoustic hot-cast socket equipment;
E, electric ceramic;
F, heat pump.
Still control device is had, storage heater provides Systematical control in charge and discharge thermal process, control system by being arranged on the temperature sensor filling heat or heat release import or export of each storage heater, controlled valve, flow sensor, pressure sensor form, and computer, software composition, control system can complete storage heater in the Based Intelligent Control of filling heat or exothermic process.
In storage heater, be provided with following a kind of exchange piece, complete the heat exchange of fluid and heat-storing material:
A, be provided with multiple pipeline, the import of storage heater and outlet are interconnected by pipeline, fluid can be flowed in pipeline, and heat-storing material is arranged in the remaining space of internal tank and pipeline;
B, be provided with heat pipe and carry out heat exchange, a part for heat pipe is arranged in heat-storing material, a part is arranged on the heat exchanging chamber indoor of storage heater in addition, heat exchanging chamber indoor are provided with fluid inlet and outlet, complete the heat exchange of heat pipe and fluid at heat exchange chamber, and then complete the heat exchange with heat-storing material by heat pipe;
C, the passage formed by the profile of solid grain block carry out heat exchange, and fluid flows in the gap that solid grain block is formed or passage, realizes the heat exchange of fluid and heat-storing material.
Described pipeline is selected from following one or combination:
A, helix tube;
The inside of B, pipeline or and outer wall be provided with heat exchange fin;
C, bending pipeline;
The pipeline that D, its diameter can change;
The outer wall of E, pipeline is provided with can with the interconnective concaveconvex structure of solid grain block;
F, pipeline by different metal composite.
Described heat pipe is for selecting following at least one:
The circulating heat pipe group of the composition of the mutual spacing of A, multiple annular, square, rectangle, polygon, bent limit shape composition;
B, be annular, square, rectangle, polygon by the cross sectional shape of a mutual UNICOM, the circulating heat pipe of bent limit shape or self-oscillation heat pipe form;
C, the heat pipe heat be made up of multiple gravity assisted heat pipe.
Adopt technical scheme of the present invention can produce following beneficial effect:
1, the combination segmentation of storage heater of the present invention controls to use, the charge and discharge heat of the combination segmentation of multiple storage heater can be completed, both the storage heater of multiple collection can have been completed and a common storage heater carries out filling heat, can realize like this individual storage heater with concentrated use, also can complete a storage heater carries out heat release to multiple storage heater simultaneously, thus is used for by the heat energy of a storage heater in the different storage heater used.
2, the present invention can realize combination and the separation of the storage heater of different types, and the storage heater in multiple source can carry out the classification use of different object.
3, the present invention can realize accumulation of heat that is capable of being combined and that separate, realizes the establishment at large-scale accumulation of heat station of combining and separate.
4, the present invention can be applied to the multiple application such as industrial exhaust heat, solar energy, underground heat, living beings.
Detailed description of the invention
The combination segmentation charge and discharge thermal control system of embodiment 1, closed loop storage heater
A fluid tank 12 and a circulating pump 13 and at least one closed loop circulating line 5; At least two storage heaters 15,16, a high-temperature heat accumulation device is for filling thermal regenerator device, a low-temperature heat accumulating device is heat release storage heater, high-temperature heat accumulation device provides heat energy for low-temperature heat accumulating device, storage heater is provided with a fluid to carry out and fluid issuing, the import of accumulation of heat and outlet are connected with closed loop circulation pipe, each import and export and exit and closed loop circulation pipe upper inlet with export be connected between be provided with a valve, can be circulated by Valve controlling fluid or not circulate; Fluid storage is in fluid tank, and circulating pump drive fluid can prolong closed loop circulation pipe and flow;
In the charge and discharge thermal process of carrying out storage heater, the import of filling thermal regenerator device of high temperature and outlet are opened, the import of the heat release storage heater of low temperature and outlet are opened simultaneously, the fluid in circulating pump drive fluid case is utilized to circulate, high temperature to be filled in thermal regenerator device heat energy by fluid communication in low-temperature heat accumulating device, realizes the exchange of heat energy;
Multiple storage heater is in charge and discharge thermal process, open the terminal valve of storage heater, just can realize the charge and discharge heat of storage heater, when storage heater does not need charge and discharge heat, storage heater import and gate out switch are closed, open the valve on closed loop circulating line simultaneously, storage heater just can be made not carry out charge and discharge heat, charge and discharge thermal control is carried out in combination or the segmentation that can realize storage heater like this.
Also combination charge and discharge heat can be carried out for the storage heater of different temperature ranges, the accumulation of heat of low temperature and the storage heater of high temperature, exchange and the control of heat energy is all realized by the closed loop of circulation, realize multiple heat release simultaneously fill hot and multiple while after being also connected with closed loop by multiple storage heater simultaneously, different combinations and separation only need the valve of different storage heaters to carry out switch, just can realize the utilization carried out by the heat energy of different storage heaters in various degree.