CN209064774U - The radiator structure of photo-thermal power station fused salt heat accumulation tank base - Google Patents

Abstract

The utility model is the radiator structure of photo-thermal power station fused salt heat accumulation tank base, include the pre-buried complex root cooling water pipe of foundation bottom, the both ends of every cooling water pipe are separately connected water inlet pipe and outlet pipe, the water inlet pipe connects cooling water temperature device with outlet pipe, outlet pipe is also connected with user with water side entrance, user connects water inlet pipe with water side outlet, the utility model selects water cooling system, cooling down accurately can be carried out to basis according to the safe temperature that base concrete requires, operating process is simple, system is safely controllable, waste heat is rationally utilized simultaneously, realize energy saving purpose.

Description

The radiator structure of photo-thermal power station fused salt heat accumulation tank base

Technical field

The utility model belongs to solar light-heat power-generation field, provides the heat dissipation of photo-thermal power generation project heat accumulation tank base new Technical thought and waste heat is recycled.

Background technique

In photo-thermal power generation, in order to extend the generating dutation in power station or increase power generation capacity, heat reservoir can be generally set. Energy-storage system is during no solar radiation or heat collecting field cannot collect energy, and energy needed for conveying to system is to meet system company Reforwarding row.Energy-storage system is generally made of fused salt heat storage can and its auxiliary device.It is with 100MW trough type solar power generation station The parallel connection of 2 × 50% heat-storing devices is usually arranged in example, energy-storage system, totally 2 hot fused salt storage tanks, 2 cold fused salt storage tanks, and 1 set of oily salt changes Hot device device etc..Wherein cold fused salt storage tank: diameter 42.5m, height 18.67m, volume 19900m3, material Q345R；Heat salt storage Tank: diameter 43.5m, height 18.78m, volume 20900m3, material Q345R.Solar energy heat-storage process (slot type): come from Jing Chang (391 DEG C) of high temperature heat conductive oil enter heat accumulation island battery limit (BL) after be divided into two-way and be respectively connected to 2 column oil salt heat exchanger apparatus.High temperature heat conductive oil Into oily salt heat exchanger and fused salt heat exchanging, 289 DEG C of low-temperature molten salts that sloppy heat salt can system is come are heated to sending hot melt salt after 387 DEG C Tank system.Heat accumulation is released can power generation process: low temperature conduction oil by oily salt heat exchanger with from salt storage tank system come height After (387 DEG C) of temperature molten salt heat exchange, heat accumulation island is sent out, participates in power generation cycle.Low-temperature molten salt (289 DEG C) after heat exchange is sent to sloppy heat salt Can system.When temperature of molten salt is lower than 260 DEG C in fused salt pipeline, electric tracing self-starting guarantees that temperature of molten salt is not less than freezing point.

It can be seen that fused salt heat storage can pot temperature is very high.Tank body basis is made of C30 armored concrete, and temperature is too high Very macrolesion can be brought to armored concrete, although being provided with insulating layer between tank body and basis, tank body basis still has can High temperature action can be born, so that the even entire heat reservoir of concrete foundation can all have potential danger.To be on the safe side, base Plinth generally does aeration-cooling measure.Current way is the steel pipe of the pre-buried DN100 in infrastructure, steel pipe is spaced about 500 ~ 750mm, part of elevating above the soil set ventilation hole, carry out cooling ventilation by free convection after air heats in steel pipe.

But such aeration-cooling measure also has fairly obvious defect: since basic diameter is bigger, portion is set under the foundation Meter ventilation, which is difficult to do general ventilation, can only accomplish local ventilation, can make entire basis uneven in temperature in this way, to influence basis Service life.In addition, photo-thermal project is mostly in the Northwest, this area is windy and dusty area, and gravity-flow ventilation pipeline is easy dust accumulation, is led to Air piping is easily blocked, and then influences ventilation effect.

Utility model content

The technical issues of the utility model is solved is providing a kind of heat dissipation of photo-thermal power station fused salt heat accumulation tank base Structure.

Technological means used by the utility model is as described below.

A kind of radiator structure of photo-thermal power station fused salt heat accumulation tank base, in the pre-buried coil pipe of fused salt heat storage can foundation bottom, It connect with cooling water temperature device.

The coil pipe includes complex root cooling water pipe, water inlet pipe and the outlet pipe for being embedded in foundation bottom in advance, every cooling water The both ends of pipe are separately connected the water inlet pipe and outlet pipe.

The cooling water temperature device is closed cooling tower, water inlet and water outlet respectively with the outlet pipe and water inlet Pipe connection.

The complex root cooling water pipe is arranged in parallel.

The spacing of adjacent cooling water pipe is 1000mm.

The water inlet pipe and outlet pipe is arc-shaped or cyclic annular or linear setting.

The cooling water pipe is the steel pipe of DN25 caliber, and water inlet pipe and outlet pipe are the steel pipe of DN80 caliber.

The outlet pipe is also connected with user water side entrance, and user connects water inlet pipe with water side outlet, on connecting line Expansion tank is set.

Electric water treatment device is arranged on water side outlet pipeline in closed cooling tower water outlet pipeline and user.

It is had the beneficial effect that caused by the utility model.

1, the utility model provides a kind of radiator structure of fused salt heat accumulation tank base, is suitable for photo-thermal power generation project fused salt The heat dissipation of heat accumulation tank base, while the hot water generated provides heating reservoir to room by heating system end, realizes and recycles, Efficiency of energy utilization can effectively be improved.

2, the cooling mode of existing gravity-flow ventilation is compared, the utility model selects the water cooling system relatively easily controlled System accurately can carry out cooling down to basis according to the safe temperature that base concrete requires, and operating process is simple, system peace It is complete controllable.By the hot water come out in basis can be used as the heat source of nearest building or fan coil or grounding heat coil tube heating into Cooling tower pair is set as needed when summer not needing to freeze or freeze uneconomic in row winter heating, cooling in summer Basis cools down.Or annual domestic hot-water can be.It can be seen that the utility model can rationally be utilized waste heat, energy is improved Source utilization efficiency realizes energy saving purpose.

3, photo-thermal project in China's mostly occurs in western China, belongs to severe cold area mostly, and the heating reservoir of project is more By natural gas, the utility model provides new solution for the heating of similar item and domestic hot-water's heat source.This is practical Novel foundation cool-down method improves the type of cooling, and perfect safety measure reduces the safety accident of concrete foundation, simultaneously The waste heat of generation can recycle, and have good safety, reliability and economy.

4, the radiator structure of the utility model can also be applied to the radiating and cooling of other similar heat storage can, realize waste heat benefit With.

Detailed description of the invention

Fig. 1 is fused salt heat storage can base water gauze pipe structural schematic diagram in the utility model.

Fig. 2 is the heat dissipation of photo-thermal power generation project fused salt heat accumulation tank base and Waste Heat Reuse schematic diagram in the utility model.

Specific embodiment

The utility model protects a kind of radiator structure of photo-thermal power station fused salt heat accumulation tank base, in fused salt heat accumulation tank base The pre-buried coil pipe in bottom, connect with cooling water temperature device.

Coil pipe is included in basic 1 bottom and several cooling water pipes 2 being parallel to each other, water inlet pipe 3 and outlet pipe 4 is arranged in parallel. Spacing 1000mm between adjacent cooling water pipe 2, the spacing can guarantee that basic internal heat dissipation reaches optimum efficiency, every cooling water pipe The cross-sectional length on basis where 2 both ends are longer than.

Setting water inlet pipe 3 and outlet pipe 4 are separately connected at 2 both ends of cooling water pipe.It is passed through cold water from water inlet pipe 3, by each After cooling water pipe 2 absorbs the heat of fuse salt storage tank, it is discharged by outlet pipe 4.As shown in Figure 1, water inlet pipe 3 and outlet pipe 4 are in Arc or ring-type or linear setting.

Cooling water pipe 2 is embedded in basis 1, and heat is by 1 conduction water inlet medium of basis, according to physical principle, cooling water Pipe 2 cannot be too small with basic 1 contact area, and water sectional area cannot be too big in cooling water pipe 2, based on various factors, uses The steel pipe of DN25 caliber is best as cooling water pipe heat exchange, while it is best for using DN80 as water inlet, outlet pipe.

Above-mentioned outlet pipe 4 and water inlet pipe 3 are connected to the water inlet and water outlet of closed cooling tower, the appropriate location on pipeline Auxiliary temperature sensors, water circulating pump and automatic control program are set.After the hot water on basis 1 is from the discharge of outlet pipe 4, such as scheme Flow chart shown in 2, the hot water of outlet pipe 4 enter closed cooling tower 5 and are handled by heat exchange cooling, the cooling after cooling Water is back to water inlet pipe 3.Safe temperature need to be arranged in fused salt storage tank basis, be 80 DEG C, i.e., 80 DEG C are the upper of basic tolerable temperature Limit, when the temperature that auxiliary temperature sensors detect is more than 80 DEG C, enforced opening water pump 51 and closed cooling tower 5, to basis 1 Cool down, to ensure the safe and reliable of basis.

Above-mentioned outlet pipe 4 is also attached to user water side, to handle and access by expansion tank after user's water return water Basic water inlet pipe 3 is returned to after softening water process.

Closed cooling tower water outlet pipeline and user's electric water treatment device settable on water side outlet pipeline.

Interior gravity-flow ventilation scheme based on the prior art, basis in waste heat be immediately discharged to outside atmosphere, cause thermal pollution. The utility model, which is adopted, to be water-cooled, and the temperature in basis is generally at 80 DEG C or so, such as under winter condition, temperature at effluent pipe mouth 60 DEG C are set as, pumps through hot water circuit to heating terminal fan coil or floor heating water inlet, heats；Under summer operating mode, Temperature setting is 75 DEG C at effluent pipe mouth, is pumped through hot water circuit to cooling tower, is sent after cooling tower cools down to carrying out in basis Circulation temperature lowering；If there is domestic hot-water's demand can be according to a part of domestic hot-water's load of power system capacity reasonable consideration.According to need It wants that maximization Waste Heat Reuse can be obtained, improves efficiency of energy utilization, energy conservation and environmental protection.

Claims (8)

1. a kind of radiator structure of photo-thermal power station fused salt heat accumulation tank base, which is characterized in that in the pre-buried coil pipe of foundation bottom, It is connect with cooling water temperature device；

The coil pipe includes complex root cooling water pipe (2), water inlet pipe (3) and the outlet pipe (4) for being embedded in basic (1) bottom in advance, often The both ends of root cooling water pipe (2) are separately connected the water inlet pipe (3) and outlet pipe (4).

2. the radiator structure of photo-thermal power station fused salt heat accumulation tank base as described in claim 1, which is characterized in that the cooling Water cooling device is closed cooling tower (5), and water inlet and water outlet are connect with the outlet pipe (4) and water inlet pipe (3) respectively.

3. the radiator structure of photo-thermal power station fused salt heat accumulation tank base as described in claim 1, which is characterized in that the plural number Root cooling water pipe (2) is arranged in parallel.

4. the radiator structure of photo-thermal power station fused salt heat accumulation tank base as described in claim 1, which is characterized in that adjacent cooling The spacing of water pipe (2) is 1000mm.

5. the radiator structure of photo-thermal power station fused salt heat accumulation tank base as described in claim 1, which is characterized in that the water inlet It manages (3) and outlet pipe (4) is arc-shaped or cyclic annular or linear is arranged.

6. the radiator structure of photo-thermal power station fused salt heat accumulation tank base as claimed in claim 1 to 5, which is characterized in that The cooling water pipe (2) is the steel pipe of DN25 caliber, and the water inlet pipe (3) and outlet pipe (4) are the steel pipe of DN80 caliber.

7. the radiator structure of photo-thermal power station fused salt heat accumulation tank base as claimed in claim 1 or 2, which is characterized in that described Outlet pipe (4) is also connected with user water side entrance, and user connects water inlet pipe (3) with water side outlet, is arranged on connecting line swollen Swollen water tank.

8. the radiator structure of photo-thermal power station fused salt heat accumulation tank base as claimed in claim 7, which is characterized in that enclosed is cooling Electric water treatment device is arranged on water side outlet pipeline in tower water outlet pipeline and user.