阅读说明：本技术 一种高温熔盐储罐的基础结构 (Foundation structure of high-temperature molten salt storage tank ) 是由 司继松 赵国明 代春雷 王林 魏治 于 2019-03-04 设计创作，主要内容包括：本发明公开了一种高温熔盐储罐的基础结构,包括保温罐体和设置在保温罐体内底部的保温罐底,所述保温罐底置于混凝土层之上,所述混凝土层内部埋设有通风管,所述通风管连通外界空气,其特征在于,所述保温罐底包括基础保温层、防泄漏钢板、砂垫层,所述基础保温层、防泄漏钢板、砂垫层由下向上依次设置。本发明的高温熔盐储罐的基础结构,造价成本低,罐体采用环形钢板结构,相较采用混凝土环墙结构,在受力满足工程需要的情况下,可有效降低工程成本,方便了施工,大大缩短了工期。(The invention discloses a foundation structure of a high-temperature molten salt storage tank, which comprises a heat-insulating tank body and a heat-insulating tank bottom arranged at the bottom in the heat-insulating tank body, wherein the heat-insulating tank bottom is arranged above a concrete layer, a ventilation pipe is embedded in the concrete layer, and the ventilation pipe is communicated with the outside air. The foundation structure of the high-temperature molten salt storage tank is low in manufacturing cost, and compared with a concrete annular wall structure, the tank body is of an annular steel plate structure, so that the construction cost can be effectively reduced, the construction is convenient, and the construction period is greatly shortened under the condition that the stress meets the engineering requirement.)

1. The utility model provides a foundation structure of high temperature fused salt storage tank, includes the heat preservation jar body and sets up the heat preservation tank bottoms of bottom in the heat preservation jar body, the heat preservation tank bottoms arranges in on the concrete layer, the inside ventilation pipe that has buried underground of concrete layer, ventilation pipe intercommunication outside air, its characterized in that, the heat preservation tank bottoms include basic heat preservation, prevent leaking steel sheet, sand cushion layer, basic heat preservation, prevent leaking steel sheet, sand cushion layer from bottom to top and set gradually.

2. The foundation structure of the high-temperature molten salt storage tank as claimed in claim 1, wherein the heat-insulating tank body comprises an annular steel plate, an annular wall heat-insulating layer and refractory bricks, and the annular steel plate, the annular wall heat-insulating layer and the refractory bricks are arranged in sequence from outside to inside.

3. The infrastructure of a high temperature molten salt storage tank of claim 1, further comprising drain pipes disposed above the concrete layer.

4. The foundation structure of claim 1, wherein the surface of the concrete layer is of a slope structure with a high center and a low periphery.

5. The infrastructure of a high temperature molten salt storage tank of claim 4, wherein the concrete layer has a surface gradient of 1% to 1.5%.

6. The infrastructure of a high temperature molten salt storage tank of claim 1, wherein the surface of the leak-proof steel plate is of a slope structure with a high center and low periphery.

7. The infrastructure of a high temperature molten salt storage tank of claim 6, wherein the surface slope of the leak-proof steel plate is 0.5% -1%.

8. The foundation structure of claim 1, further comprising an annular groove and a salt discharge pipe, wherein the annular groove is arranged on the periphery of the anti-leakage steel plate and is of a concave structure, and the salt discharge pipe is communicated with the annular groove and the outside air.

9. The basic structure of the high-temperature molten salt storage tank is characterized in that the thickness of the annular steel plate is more than or equal to 30 mm.

Technical Field

The invention relates to the field of solar photo-thermal power generation, in particular to a foundation structure of a high-temperature molten salt storage tank.

Background

Solar energy is a clean renewable energy source. In order to avoid the restriction of low energy flow density, day and night, season, cloudy weather and the like, the technology of directly storing solar energy in the form of heat is called solar heat storage technology.

In the solar heat storage technology, high-temperature molten salt heat storage is a hot point of research in recent years, and in a high-temperature molten salt heat storage system, the design of a basic structure of a core equipment molten salt storage tank is a difficult point in the field. Ensure that the stability of fused salt storage tank operation also is the important thing of this foundation structure design consideration, present fused salt storage tank foundation structure adopts concrete ring wall structure more, and this structure manufacturing cost is high, and the construction cycle is long, often appears the problem of ponding in the ring wall. And once the fused salt leakage occurs in the fused salt storage tank, how to ensure the discharge of the fused salt is also a design difficulty.

Disclosure of Invention

The invention provides a basic structure of a high-temperature molten salt storage tank. The foundation structure of the high-temperature molten salt storage tank is low in manufacturing cost, the concrete layer is of a gradient structure with high center and low periphery, and the water drainage pipe is arranged, so that the problem of water storage in a rainwater day can be effectively solved. In addition, set up the annular on preventing leaking the steel deck, the annular is through arranging salt pipe intercommunication external, effectively solves in case the fused salt storage tank takes place to leak, needs smoothly with fused salt exhaust difficult problem.

The invention is realized by the following technical scheme:

the utility model provides a foundation structure of high temperature fused salt storage tank, includes the heat preservation jar body and sets up the heat preservation tank bottoms of bottom in the heat preservation jar body, the heat preservation tank bottoms arranges in on the concrete layer, the inside ventilation pipe that has buried underground of concrete layer, ventilation pipe intercommunication outside air, its characterized in that, the heat preservation tank bottoms include basic heat preservation, prevent leaking steel sheet, sand cushion layer, basic heat preservation, prevent leaking steel sheet, sand cushion layer from bottom to top and set gradually.

The heat-insulation tank body comprises an annular steel plate, an annular wall heat-insulation layer and refractory bricks, wherein the annular steel plate, the annular wall heat-insulation layer and the refractory bricks are sequentially arranged from outside to inside.

Preferably, the concrete floor further comprises a drain pipe, and the drain pipe is arranged above the concrete layer.

Wherein, the concrete layer surface is the slope structure of high low all around in center.

Preferably, the surface gradient of the concrete layer is 1% -1.5%.

The surface of the anti-leakage steel plate is of a slope structure with a high center and low periphery.

Preferably, the surface gradient of the anti-leakage steel plate is 0.5-1%.

The device comprises a steel plate, a ring groove and a salt discharge pipe, wherein the ring groove is arranged on the periphery of the leakage-proof steel plate and is of a concave structure, and the salt discharge pipe is communicated with the ring groove and the outside air.

Wherein the thickness of the annular steel plate is more than or equal to 30 mm.

Advantageous effects

According to the foundation structure of the high-temperature molten salt storage tank, the heat-insulating tank body is of the annular steel plate structure, and compared with a concrete annular wall structure, under the condition that the stress meets the engineering requirement, the engineering cost can be effectively reduced, and the requirement on the environment temperature is low, so that the construction is more convenient, and the construction period is greatly shortened.

The foundation structure of the high-temperature molten salt storage tank is low in manufacturing cost, the concrete layer is of a gradient structure with high center and low periphery, and the water drainage pipe is arranged, so that the problem of water storage in a rainwater day can be effectively solved. In addition, set up the annular on preventing leaking the steel deck, the annular is through arranging salt pipe intercommunication external, has effectively solved in case the fused salt storage tank takes place to leak, needs smoothly with fused salt exhaust difficult problem.

Drawings

FIG. 1 is a schematic diagram of the basic structure of a high temperature molten salt storage tank;

FIG. 2 is a schematic enlarged view of a concrete layer;

fig. 3 is a partially enlarged view of the leakage preventing steel plate.

Wherein: 1. a concrete layer; 2. a drain pipe; 3. an annular steel plate; 4. an annular wall heat-insulating layer; 5. a salt discharge pipe; 6. a refractory brick layer; 7. a sand cushion layer; 8. a base insulating layer; 9. a leakage-proof steel plate; 10. a vent pipe; 11. and a ring groove.

Detailed Description

The basic structure of the high-temperature molten salt storage tank of the invention is described below by way of specific embodiments. Unless otherwise specified, the technical means used in the present invention are well known to those skilled in the art. In addition, the embodiments should be considered illustrative, and not restrictive, of the scope of the invention, which is defined solely by the claims. It will be apparent to those skilled in the art that various changes and modifications can be made in the invention without departing from the spirit and scope of the invention.

As shown in the figure 1-2, the foundation structure of the high-temperature molten salt storage tank comprises a heat-preservation tank body and a heat-preservation tank bottom arranged at the bottom in the heat-preservation tank body, wherein the heat-preservation tank body comprises an annular steel plate 3, an annular wall heat-preservation layer 4 and refractory bricks 6 which are sequentially arranged from outside to inside. The thickness of the annular steel plate 3 is preferably more than or equal to 30 mm.

According to the heat-insulating tank body of the molten salt storage tank, the annular steel plate 3 is arranged as the outermost layer, so that the engineering cost is effectively reduced, the construction is convenient and the construction period is greatly shortened under the condition that the stress meets the engineering requirement compared with a concrete annular wall structure. The ring wall heat preservation layer 4 arranged in the middle effectively prevents the heat in the storage tank from being dissipated from the side surface in a large amount, and the inner side refractory bricks 6 ensure the support of the storage tank.

Wherein, the insulation tank bottom sets up on concrete layer 1, and concrete layer 1 is inside to have buried ventilation pipe 10 underground, and ventilation pipe 10 intercommunication outside air, the insulation tank bottom still include the basic heat preservation 8 that sets gradually from bottom to top, prevent leaking steel sheet 9, sand bed course 7.

The sand cushion layer 1 is formed by mixing and laying coarse sand and fine sand in a certain proportion, and can play a role in stabilizing the storage tank and insulating heat. The leakage-proof steel plate 9 can effectively collect leaked molten salt, so that effective measures can be taken in time, and serious consequences caused by the leakage of the molten salt are avoided. The foundation heat-insulating layer 8 and the concrete layer 1 can respectively play roles of heat insulation and support.

Wherein, the surface of the concrete layer 1 is of a slope structure with high center and low periphery, and the surface slope is 1 to 1.5 percent. The drain pipe 2 is arranged above the concrete layer 1.

The 1 central height of concrete layer slope structure low all around, including the setting of drain pipe 2, can effectively solve the problem that rainwater sky was deposited water.

When the concrete layer slope is less than 1%, the requirement on construction quality is high, namely the condition that the local slope does not meet the requirement is easy to occur in construction, foundation ponding is easier to cause, the heat insulation performance is influenced, and therefore the power generation efficiency of the system is influenced. Therefore, a structure having a surface gradient of 1% to 1.5% is preferable.

As shown in fig. 3, the anti-leakage steel plate 9 is also in a slope structure with a high center and a low periphery, the ring groove 11 is arranged at the periphery of the anti-leakage steel plate 9 and is in a concave structure, and the salt discharge pipe 5 is communicated with the ring groove 11 and the outside air.

Prevent setting up concave structure's annular 11 on the leak-proof steel sheet 9, annular 11 communicates the outside air through arrange salt pipe 5, has effectively solved when the fused salt storage tank takes place to leak, needs smoothly with fused salt exhaust's difficult problem. The surface gradient of the leakproof steel plate 9 is preferably 0.5 to 1 percent. When the surface gradient of the leakproof steel plate 9 is less than 0.5%, a local surface depression is easily formed in the actual construction of the project, so that the quality requirement is difficult to meet, and therefore, the surface gradient of the leakproof steel plate 9 is preferably 0.5-1%.

In addition, the salt discharge pipe 5 can discharge water vapor in the heat insulation layer in the preheating process of the molten salt storage tank, so that the basic heat insulation performance is ensured.