CN111397417A - Heat storage tank for 850 ℃ high-temperature sand - Google Patents

Abstract

A heat storage tank for 850 ℃ high-temperature sand relates to a heat storage tank. The invention aims to solve the problems that the existing heat storage tank is high in cost and is not suitable for large-scale popularization and use. The device comprises an upper conical end socket (2), a lower conical end socket (5), a cylinder body (3) and a supporting assembly, wherein the upper conical end socket (2), the cylinder body (3) and the lower conical end socket (5) are fixedly connected from top to bottom in sequence, and the supporting assembly is arranged at the lower part of the cylinder body (3); upper portion toper head (2), barrel (3) and lower part toper head (5) all include outer steel (10), heat preservation (11) and inlayer (12), and outer steel (10), heat preservation (11) and inlayer (12) are connected gradually from outer to interior and are arranged. The invention is used for energy storage and heat exchange of high-temperature sand.

Description

A heat storage tank for high temperature sand at 850°C

technical field

The invention relates to a heat storage tank, in particular to a heat storage tank for 850°C high temperature sand.

Background technique

With the gradual exhaustion of non-renewable resources such as coal and oil, the energy crisis is approaching. According to the current mining progress, China, as the country with the largest coal reserves in the world, can still mine coal for 80 years. More than half of the Middle East's total oil will also be exhausted within 40 years. Therefore, the utilization of various renewable energy sources by human beings is becoming more and more profound.

The development of renewable energy technologies such as wind energy and solar energy will be very dependent on the weather. In order to ensure a continuous and stable power supply effect, additional power supply methods or other collaborative technologies must be supported. To this end, while constantly improving these technologies, many researchers are trying to find new materials and methods.

Sand particles, as a common and low-cost heat storage material, are gradually attracting attention in the field of energy storage technology. Compared with the widely used heat storage media such as molten salt and heat transfer oil, sand has a more stable chemical Moreover, it can be used under high temperature conditions of up to 1000 °C, and higher temperatures can bring higher thermal storage energy; the more important factor is that the cost of sand is low, which is conducive to reducing the cost of thermal storage technology.

However, the existing high-temperature heat storage tanks are usually made of high-temperature-resistant aerospace materials due to the higher performance requirements of materials under high-temperature conditions. question.

SUMMARY OF THE INVENTION

The purpose of the present invention is to solve the problem that the existing heat storage tank has high cost and is not suitable for widespread use. Furthermore, a heat storage tank for 850°C high temperature sand is provided.

The technical scheme of the present invention is as follows: a heat storage tank for 850°C high temperature sand includes an upper conical head 2, a lower conical head 5, a cylinder 3 and a support assembly, the upper conical head 2, the cylinder 3 and the lower conical head 5 are fixedly connected in sequence from top to bottom, and the support assembly is installed in the lower part of the cylinder 3; the upper conical head 2, the cylinder 3 and the lower conical head 5 all include outer steel The thermal insulation layer 11 and the inner layer 12, the outer steel layer 10, the thermal insulation layer 11 and the inner layer 12 are sequentially connected and arranged from the outside to the inside, and the inner layer 12 is made of plastic or bauxite.

Further, the small end of the upper conical head 2 faces upward, the large end of the upper conical head 2 faces downward, and the large end of the upper conical head 2 is connected to the upper end of the cylinder body 3 .

Further, the large end of the lower conical head 5 faces upwards, the large end of the lower conical head 5 is connected to the lower end of the cylinder 3 , and the small end of the lower conical head 5 faces downwards.

Further, it also includes an inlet nozzle 1 and an outlet nozzle 8, the inlet nozzle 1 is installed on the small end of the upper conical head 2, and the outlet nozzle 8 is installed on the small end of the lower conical head 5.

Furthermore, it also includes a plurality of hooks 9 , and the outer steel 10 , the thermal insulation layer 11 and the inner layer 12 are connected by a plurality of hooks 9 .

Further, the support assembly includes a plurality of support units, and the plurality of support units are evenly installed on the lower part of the cylinder body 3 .

Further, each supporting unit includes a backing plate 4, a supporting plate 6 and a bottom plate 7, the supporting plate 6 is arranged vertically, and the upper end of the supporting plate 6 is connected with the lower part of the cylinder 3 through the backing plate 4, and the lower end of the supporting plate 6 is connected It is connected to the foundation through the bottom plate 7 .

Further, the bottom plate 7 and the foundation are connected by a plurality of anchor bolts.

Further, the backing plate 4 , the supporting plate 6 and the bottom plate 7 are fixedly connected as a whole by welding.

Preferably, the number of the plurality of supporting units is 4-8.

Compared with the prior art, the present invention has the following effects:

1. The structure of the present invention is simple and compact, and is convenient for production, manufacture and maintenance.

2. The outer layer of the present invention is made of steel material, and the inner layer is selected from plastic or bauxite, and the price is low, which will effectively reduce the cost of heat storage technology as a whole;

3. The present invention is suitable for the heat storage process of higher temperature medium, and will have higher heat storage energy.

4. The upper inlet and the lower outlet of the present invention adopt gradually expanding and tapering oblique cone structures, which are more conducive to the discharge and discharge of sand medium.

5. The present invention adopts different materials from the inside to the outside, which not only meets the heat resistance requirements for high temperature media, but also meets the strength requirements.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is a partial enlarged view of the cylinder.

Detailed ways

Embodiment 1: This embodiment will be described with reference to FIG. 1 to FIG. 2 . A heat storage tank for 850°C high-temperature sand in this embodiment includes an upper conical head 2 , a lower conical head 5 , and a cylinder 3 and the support assembly, the upper conical head 2, the cylinder 3 and the lower conical head 5 are fixedly connected in sequence from top to bottom, and the support assembly is installed in the lower part of the cylinder 3; the upper conical head 2, the cylinder 3 and the The lower conical head 5 includes an outer layer steel 10, an insulating layer 11 and an inner layer 12, and the outer layer steel 10, the insulating layer 11 and the inner layer 12 are sequentially connected and arranged from outside to inside.

In consideration of cost and heat resistance, the inner layer 12 of this embodiment may be heat-resistant concrete or bauxite.

The thermal insulation layer 11 of this embodiment is made of thermal insulation rock wool.

Embodiment 2: This embodiment will be described with reference to FIG. 1. In this embodiment, the small end of the upper conical head 2 faces upward, the large end of the upper conical head 2 faces downward, and the large end of the upper conical head 2 faces downward. The end is connected to the upper end of the cylinder body 3 . This arrangement facilitates the connection of the upper conical head 2 with the cylinder body and the upper conical head 1 . Other components and connection relationships are the same as in the first embodiment.

Embodiment 3: This embodiment will be described with reference to FIG. 1 . In this embodiment, the large end of the lower conical head 5 faces upward, and the large end of the lower conical head 5 is connected to the lower end of the cylinder 3 . The small end of the head 5 is facing down. This arrangement facilitates the connection with the cylinder body and the lower conical head. Other compositions and connection relationships are the same as in the first or second embodiment.

Embodiment 4: This embodiment is described with reference to FIG. 1. This embodiment also includes an inlet nozzle 1 and an outlet nozzle 8. The inlet nozzle 1 is installed on the small end of the upper conical head 2, and the outlet nozzle 8 is installed on the lower conical head. on the small end of head 5. This arrangement facilitates connection with other heat storage tanks to form a heat exchange cycle. Other compositions and connection relationships are the same as in the first, second or third embodiment.

Embodiment 5: This embodiment is described with reference to FIG. 1 . This embodiment also includes a plurality of hooks 9 , and the outer steel 10 , the thermal insulation layer 11 and the inner layer 12 are connected by a plurality of hooks 9 . In this way, the connection method is simple and reliable. Other compositions and connection relationships are the same as in the first, second, third or fourth embodiment.

Embodiment 6: This embodiment will be described with reference to FIG. 1 . The support assembly of this embodiment includes a plurality of support units, and the plurality of support units are evenly installed on the lower portion of the cylinder body 3 . This arrangement facilitates lifting the entire lower conical head and provides enough space for the external connection of the outlet nozzle. Other compositions and connection relationships are the same as in the first, second, third, fourth or fifth embodiment.

Embodiment 7: This embodiment will be described with reference to FIG. 1. Each support unit in this embodiment includes a backing plate 4, a supporting plate 6 and a bottom plate 7. The supporting plate 6 is vertically arranged, and the upper end of the supporting plate 6 passes through the backing plate. 4 is connected to the lower part of the cylinder body 3, and the lower end of the support plate 6 is connected to the foundation through the bottom plate 7. In this way, the structure is simple and the support is firm. Other compositions and connection relationships are the same as in the first, second, third, fourth, fifth or sixth embodiment.

Embodiment 8: This embodiment will be described with reference to FIG. 1 . The bottom plate 7 and the foundation of this embodiment are connected by a plurality of anchor bolts. In this way, the connection is simple and the disassembly is convenient. Other compositions and connection relationships are the same as any one of Embodiments 1 to 7.

Embodiment 9: The present embodiment will be described with reference to FIG. 1 . The backing plate 4 , the support plate 6 and the bottom plate 7 of the present embodiment are fixed and connected as a whole by welding. In this way, the connection is simple and convenient. Other compositions and connection relationships are the same as any one of Embodiments 1 to 8.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 10: This embodiment will be described with reference to FIG. 1 . The number of the plurality of support units in this embodiment is 4-8. In this way, there are preferably 4 supporting units, and while ensuring the supporting effect, the structure is simple and the cost is low. Other compositions and connection relationships are the same as any one of Embodiments 1 to 9.

1 to 2 to illustrate the actual use of the present invention: the inlet nozzle 1, the upper conical head 2, the cylinder 3, the lower conical head 5 and the outlet nozzle 8 are welded to each other in sequence, and the upper part of the inlet nozzle 1 is welded to each other in sequence. It can be connected to a low-temperature heat storage tank, and used together with this device to form a double-tank heat storage system, and the outlet pipe 8 can be connected to a pipeline.

The backing plate 4 is welded and connected with the cylinder body 3 and the supporting plate 6 respectively, and the supporting plate 6 is welded with the bottom plate 7. A backing plate 4, a supporting plate 6 and a bottom plate 7 constitute a supporting structure of the device. The device requires four such a support system.

The above only describes the preferred embodiments of the present invention, but the present invention is not limited to the above-mentioned specific embodiments. Those skilled in the art, under the inspiration of the present invention, without departing from the spirit of the present invention, can understand the characteristics of the present invention. Various modifications or equivalent substitutions made in the embodiments to suit specific situations will not depart from the spirit of the present invention and the protection scope of the claims.

Claims (10)

1. A heat storage tank for 850 ℃ high-temperature sand is characterized in that: the device comprises an upper conical seal head (2), a lower conical seal head (5), a cylinder body (3) and a supporting assembly, wherein the upper conical seal head (2), the cylinder body (3) and the lower conical seal head (5) are fixedly connected from top to bottom in sequence, and the supporting assembly is arranged at the lower part of the cylinder body (3); the upper conical seal head (2), the cylinder body (3) and the lower conical seal head (5) comprise outer steel (10), a heat preservation layer (11) and an inner layer (12), the outer steel (10), the heat preservation layer (11) and the inner layer (12) are sequentially connected from outside to inside, and the inner layer (12) is made of plastic or bauxite.

2. The heat storage tank for high-temperature sand at 850 ℃ according to claim 1, characterized in that: the small end of the upper conical seal head (2) faces upwards, the large end of the upper conical seal head (2) faces downwards, and the large end of the upper conical seal head (2) is connected with the upper end of the cylinder body (3).

3. The heat storage tank for the high-temperature sand of 850 ℃ according to claim 2, characterized in that: the big end of the lower conical seal head (5) faces upwards, the big end of the lower conical seal head (5) is connected with the lower end of the cylinder body (3), and the small end of the lower conical seal head (5) faces downwards.

4. A thermal storage tank for high temperature sand at 850 ℃ according to claim 3, wherein: the device also comprises an inlet connecting pipe (1) and an outlet connecting pipe (8), wherein the inlet connecting pipe (1) is arranged at the small end of the upper conical seal head (2), and the outlet connecting pipe (8) is arranged at the small end of the lower conical seal head (5).

5. The heat storage tank for the sand with the high temperature of 850 ℃ as claimed in claim 4, wherein: the heat-insulating layer is characterized by further comprising a plurality of hook nails (9), wherein the outer layer steel (10), the heat-insulating layer (11) and the inner layer (12) are connected through the plurality of hook nails (9).

6. The heat storage tank for the sand with the high temperature of 850 ℃ as claimed in claim 5, wherein: the supporting component comprises a plurality of supporting units which are uniformly arranged at the lower part of the cylinder body (3).

7. The heat storage tank for the sand with the temperature of 850 ℃ as claimed in claim 6, wherein: every support unit all includes backing plate (4), backup pad (6) and bottom plate (7), and backup pad (6) vertical setting, and the sub-unit connection of backing plate (4) and barrel (3) is passed through to the upper end of backup pad (6), and the lower extreme of backup pad (6) passes through bottom plate (7) and is connected with the ground.

8. The heat storage tank for high temperature sand of 850 ℃ according to claim 7, wherein: the bottom plate (7) is connected with the foundation through a plurality of foundation bolts.

9. The heat storage tank for high temperature sand of 850 ℃ according to claim 8, wherein: the backing plate (4), the supporting plate (6) and the bottom plate (7) are fixedly connected into a whole in a welding mode.

10. The heat storage tank for high temperature sand of 850 ℃ according to claim 9, wherein: the number of the plurality of supporting units is 4-8.

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