CN207936816U - A kind of steel energy-storage system - Google Patents

Abstract

A kind of steel energy storage method, the heat accumulating being arranged in thermal store is heated using electric energy, its electric energy is converted to temperature in 600 1200 DEG C of thermal energy storage in thermal store, the heat accumulating in thermal store is kept the temperature using thermal insulation material, the thermal energy in being stored in thermal store is carried out stable, controllable output during incubation to utilize, the heat accumulating is steel.

Description

A kind of steel energy-storage system

Technical field

The utility model is related to energy-storage system technical field more particularly to a kind of sides carrying out energy storage to steel with electrical heating Method.

Technical background

It is more next using new energy, the utilization rate for improving the energy with becoming increasingly conspicuous for energy shortage and problem of environmental pollution More it is valued by people.Energy storage technologies receive state as the important method for solving energy supply-demand unbalance The favor of inside and outside enterprise and related research institutes.

The heating heat-storing device of the prior art solves the safety issue for directly using high pressure electrical heating energy storage material water, The investment for saving transformer simultaneously, reduces equipment cost.But with water heat accumulation, temperature is no more than 100 DEG C, restriction in this way The use scope of heat accumulation, such as cannot produce high-temperature steam.

Solid heat accumulation is also the technology of maturation at present, and heat accumulating is refractory material.Heat accumulation temperature is also relatively high, reaches To 400-500 DEG C, due to being air insulation, the requirement of high voltage direct-furnish safe distance is larger, so thermal store internal volume utilization rate It is relatively low, influence quantity of heat storage.In addition, its electrical heating and heat accumulation are exchanged heat as medium by hot-air, due to air heat Hold very little, to complete high-power heat, it is necessary to the prodigious wind turbine of flow and heat-exchanger rig, so use scope is also by certain Limitation.

Currently, the development of the regenerative resource including wind energy, solar energy etc. keeps energy storage technology of increasing concern.It can A big problem existing for the renewable sources of energy is its unstability, and the outside climatic condition of different moments can lead to generated energy substantially Fluctuation, this is to being incorporated into the power networks or all causing prodigious negative effect with the matching of user demand.Therefore, the suitable storage of development Can technology to adjust the generated energy of different periods to meet the needs of grid-connected or user be vital.

Utility model content

The utility model is directed to problems of the prior art, and providing a kind of can effectively reduce operating cost, stability A kind of higher steel energy-storage system.

In order to achieve the above object, the technical solution of the utility model is：A kind of steel energy-storage system, utilizes electric energy pair The heat accumulating being arranged in thermal store is heated, and converting its electric energy to thermal energy storage of the temperature in 1200 DEG C of 600- is storing up It is hot in vivo to be kept the temperature the heat accumulating in thermal store using thermal insulation material, heat is carried out by heat transfer medium during incubation It exchanges and the thermal energy in being stored in thermal store is carried out to stable, controllable output utilization, the heat accumulating is steel.

Further, the steel is the steel of multiple column structures, and the steel of column structure is perpendicular according to multiple rows of longitudinal direction Directly it is mounted in thermal store.

Further, the multiple cast steel blocks of the steel of the column structure are piled into.

Further, the heat accumulating further includes the high temperature resistant filling in the gap between being filled in the steel Grain object material, high temperature resistant filler particles object material is sandstone, ceramic particle or silicon carbide etc..

Further, the thermal store includes energy storage inner sealing shell and closure body, and the heat accumulating setting exists The energy storage inner sealing shell；The closure body suit, which is arranged between the energy storage inner sealing shell, the two, has a vacuum Cavity.

Further, the inside of the energy storage inner sealing shell of the thermal store is equipped with refractory brick material layer.

Further, pass through pumping in the vacuum cavity between the closure body of the thermal store and energy storage inner sealing shell Vacuum pours inert protective gas to be kept the temperature and be realized the isolation of steel material and air.

Further, the steel of the column structure directly be electrically connected, be formed into a loop, using self-resistance come to oneself It is heated, converts its electric energy to thermal energy storage in steel；Alternatively, the steel of the column structure is otherwise Electrical heating is heated, and converts electrical energy into thermal energy storage in steel.

Further, the electrical heating of the other manner be sensing heating, heat radiation, electric arc heated, electron beam heating, The combination of one or more of dielectric heating or plasma heating.

Further, the heat transfer medium is liquid metal, inert gas or nitrogen, and heat transfer medium flows through steel, with The heat that steel heat exchange stores steel exports.

Compared with prior art, the utility model has the advantage that：

（1）Alleviation Voltage force reduces operating cost

The system is all using trough-electricity energy, and by thermal energy storage to steel, this technology has responded national shifting peak and filled out Paddy policy improves power grid efficiency, gives full play to the benefit of trough-electricity, extend the service life of generating equipment；Due to the electricity price of trough-electricity The only 1/3-1/4 of peak electricity, greatly reduces operating cost, reduces the expense of transformer equipment；

（2）Modular assembled, reasonable in design, convenient and flexible installation is, it can be achieved that multimode combines；According to the big of energy storage The small size for being adjusted volume, or multiple steel energy storage devices can be superimposed；Single steel energy storage device maintainability is good, can Arbitrarily to adjust the group number of amount of stored heat；

（3）The thermal efficiency is high

The system uses integral structure, by heating, accumulation of heat, takes heat, heat exchange and control function combination in integral structure Interior, steel heat accumulating can improve heat accumulation temperature, realize 600 ~ 1200 degree of heat accumulation, more electric energy are become thermal energy and are stored up It deposits, realizes that higher thermal efficiency utilizes；

（4）Floor space is small

The system is using steel material as energy-accumulation material, and thermal capacity is high, heat storage capacity is strong, longtime running is stable, nontoxic It is harmless pollution-free, while greatly reducing occupation area of equipment, heat dissipation area is greatly reduced, whole efficiency is improved.

Description of the drawings

Fig. 1 is the utility model heat reservoir structural schematic diagram.

Fig. 2 is the cross-sectional view of the utility model specific embodiment.

In figure：11 closure bodies；12 vacuum cavities；13 energy storage inner sealing shells；14 refractory brick material layers；2 heat accumulation materials Material.

Specific implementation mode

The utility model is further illustrated with embodiment, but the utility model is not intended to be limited thereto below.

It please refers to Fig.1 with shown in Fig. 2, a kind of steel energy-storage system of the utility model is：

（1）The steel heat accumulating being arranged in thermal store is heated using electric energy；

（2）By its electric energy be converted into temperature 1200 DEG C of 600- thermal energy storage in thermal store；

（3）It will be kept the temperature in thermal store using thermal insulation material；

（4）Carrying out heat exchange by heat transfer medium during incubation will be stored in thermal store in steel heat accumulating 2 Thermal energy carries out stable, controllable output and utilizes.

The thermal store includes energy storage inner sealing shell 13 and closure body 11, the energy storage inner sealing shell 13 it is interior Side is additionally provided with refractory brick material layer 14, and the refractory brick material layer in the energy storage inner sealing shell 13 is arranged in the heat accumulating 2 In 14；The suit of closure body 11, which is arranged between the energy storage inner sealing shell 13, the two, has a vacuum cavity 12；Very Steel heat accumulating 2 and air are kept the temperature and realized in cavity body 12 by vacuumizing or pouring inert protective gas Isolation.The steel heat accumulating 2 is the steel of multiple column structures, and the steel of column structure is pacified vertically according to multiple rows of longitudinal direction In thermal store.The steel of the column structure directly be electrically connected, be formed into a loop, using self-resistance come to oneself carry out Heating, converts electrical energy into thermal energy storage in steel heat accumulating 2；Alternatively, the steel of the column structure passes through other sides The electrical heating of formula is heated, and converts electrical energy into thermal energy storage in steel heat accumulating 2.The electrical heating of the other manner For one or more of sensing heating, heat radiation, electric arc heated, electron beam heating, dielectric heating or plasma heating Combination.The thermal energy in being stored in thermal store is carried out stable, controllable output during incubation to utilize, is by liquid gold Belong to, nitrogen or inert gas flow through steel, the heat output for storing steel with steel heat exchange；The liquid metal be sodium, Na-K alloy or other liquid metals.

The steel of the column structure can multiple cast steel blocks be piled into.

High temperature resistant filler particles object material, high temperature resistant filler particles are additionally provided in the gap of the steel of the column structure Object material is sandstone, ceramic particle or silicon carbide etc..

Herein, the nouns of locality such as involved front, rear, top, and bottom are to be located in figure with parts in attached drawing and zero Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality Use should not limit the claimed range of the application.

In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.

Finally it should be noted that：The above descriptions are merely preferred embodiments of the present invention, is not limited to this Utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art For, it still can be with technical scheme described in the above embodiments is modified, or to which part technical characteristic Carry out equivalent replacement.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on, It should be included within the scope of protection of this utility model.

Claims (8)

1. a kind of steel energy-storage system, it is characterised in that：Including thermal store and heat accumulating；The thermal store includes envelope in energy storage Closed shell body and closure body, the heat accumulating are arranged in the energy storage inner sealing shell；The closure body suit setting In the energy storage inner sealing shell；The heat accumulating is steel；The steel is the steel of multiple column structures, column The steel of structure is vertically installed at according to multiple rows of longitudinal direction in thermal store；The heat accumulating further include be filled in the steel it Between gap in high temperature resistant filler particles object material, high temperature resistant filler particles object material is sandstone, ceramic particle or carbonization Silicon.

2. a kind of steel energy-storage system as described in claim 1, it is characterised in that：The steel of the column structure is multiple What cast steel block was piled into.

3. a kind of steel energy-storage system as described in claim 1, it is characterised in that：The closure body suit is arranged in institute Energy storage inner sealing shell is stated, there is a vacuum cavity between the two.

4. a kind of steel energy-storage system as claimed in claim 3, it is characterised in that：The energy storage inner sealing shell of the thermal store Inside be equipped with refractory brick material layer.

5. a kind of steel energy-storage system as claimed in claim 3, it is characterised in that：The closure body of the thermal store and storage Steel is kept the temperature and realized by vacuumizing or pouring inert protective gas in vacuum cavity between energy inner sealing shell The isolation of iron material and air.

6. a kind of steel energy-storage system as described in claim 1, it is characterised in that：The steel of the column structure directly with electricity Connection, forming circuit, heats oneself using self-resistance, converts its electric energy to thermal energy storage in steel；Or Person, the electrical heating of the steel of the column structure otherwise are heated, and convert electrical energy into thermal energy storage in steel.

7. a kind of steel energy-storage system as claimed in claim 6, it is characterised in that：The electrical heating of the other manner is sense Should heat, heat radiation, electric arc heated, electron beam heating, one or more of dielectric heating or plasma heating knot It closes.

8. a kind of steel energy-storage system as described in claim 1, it is characterised in that：Further include heat transfer medium, the heat transfer is situated between Matter is liquid metal, inert gas or nitrogen, and heat transfer medium flows through steel, and the heat for storing steel with steel heat exchange is defeated Go out.