CN-224229738-U - Temperature control system of compressed air storage

Abstract

The utility model provides a temperature control system of a compressed air storage, which is characterized by comprising a storage, a heat exchanger, a compressed air pipeline and a cold and hot supply device, wherein an air inlet guide pipe and an air outlet guide pipe are arranged in the storage, the air inlet guide pipe and the air outlet guide pipe are respectively communicated with the heat exchanger through the compressed air pipeline, the heat exchanger is also communicated with the cold and hot supply device, the compressed air in the storage controls the temperature through the heat exchanger and the cold and hot supply device, the cold and hot supply device comprises a closed direct supply unit, an open direct supply unit and a semi-open semi-closed direct supply unit, a plurality of temperature sensors are arranged in the storage, and a booster fan is arranged in the compressed air pipeline between the storage and the heat exchanger, so that the temperature of the storage is constant, the service life of sealing materials is prolonged, and the construction cost of the storage is saved.

Inventors

• LI XICHEN
• ZHANG HENG
• ZHOU LINGMIN
• CAI GUOZHENG
• Hua Liuyuan
• MA HONGBIN

Assignees

• 升能能源(浙江)有限公司

Dates

Publication Date

20260512

Application Date

20250428

Claims (6)

1. 1. A temperature control system of a compressed air storage is characterized by comprising a storage (1), a heat exchanger (3), a compressed air pipeline (18) and a cold and hot supply device, wherein an air inlet guide pipe and an air outlet guide pipe are arranged in the storage (1), the air inlet guide pipe and the air outlet guide pipe are respectively communicated with the heat exchanger (3) through the compressed air pipeline (18), the heat exchanger (3) is also communicated with the cold and hot supply device, the temperature of compressed air in the storage (1) is controlled through the heat exchanger (3) and the cold and hot supply device, the cold and hot supply device comprises a closed direct supply unit, an open direct supply unit and a semi-open semi-closed direct supply unit, a plurality of temperature sensors (17) are arranged in the storage (1), and a booster fan (2) is arranged in the compressed air pipeline (18) between the storage (1) and the heat exchanger (3).
2. 2. The temperature control system of the compressed air storage according to claim 1, wherein one end of the air inlet guide pipe and one end of the air outlet guide pipe are communicated in the heat exchanger (3), the other end of the air inlet guide pipe and the other end of the air outlet guide pipe are respectively and extended and communicated to the center of the bottom of the storage (1), and extend to the two ends of the storage (1) continuously along the opposite horizontal directions, a plurality of branch guide pipes (16) are formed in horizontal plane pipelines of the air inlet guide pipe and the air outlet guide pipe at equal intervals, and the branch guide pipes (16) are arranged in a divergent shape, and vent ports at the tail ends are bent upwards.
3. 3. The temperature control system of the compressed air storage according to claim 1 or 2, wherein the temperature sensors (17) are uniformly distributed on the top of the inner wall of the storage (1) in the length direction, and a compressed air pipeline (18) between the storage (1) and the booster fan (2) is provided with a first check valve (5).
4. 4. The temperature control system of the compressed air storage according to claim 1, wherein the open direct supply unit comprises a public circulating water (4) and a heat exchange water pipeline (19), two ends of the public circulating water (4) are respectively communicated with the heat exchanger (3) through the heat exchange water pipeline (19), and the heat exchange water pipelines (19) at two ends are respectively provided with a fourth stop valve (12) and a fifth stop valve (13).
5. 5. The temperature control system of the compressed air storage warehouse of claim 1, wherein the closed direct supply unit comprises a hot water storage tank (7), a cold water storage tank (8) and a heat exchange water pipeline (19), the hot water storage tank (7) and the cold water storage tank (8) are respectively communicated with the heat exchanger (3) through the heat exchange water pipeline (19), the heat exchange water pipeline (19) among the hot water storage tank (7), the cold water storage tank (8) and the heat exchanger (3) is sequentially provided with a second check valve (9) and a booster pump (6), the heat exchange water pipeline (19) among the hot water storage tank (7), the cold water storage tank (8) and the second check valve (9) is respectively provided with a sixth check valve (20) and a seventh check valve (21), and a waste heat recovery device (23) is arranged between the hot water storage tank (7) and the cold water storage tank (8).
6. 6. The temperature control system of the compressed air storage tank according to claim 4, wherein the semi-open and semi-closed direct supply unit comprises circulating cooling water (22), a hot water storage tank (7), a cold water storage tank (8) and a heat exchange water pipeline (19), two ends of the circulating cooling water (22) are respectively communicated with the heat exchanger (3) through the heat exchange water pipeline (19), the heat exchange water pipeline (19) at two ends is respectively provided with a fourth stop valve (12) and a fifth stop valve (13), the hot water storage tank (7) and the cold water storage tank (8) are respectively communicated with the heat exchanger (3) through the heat exchange water pipeline (19), the heat exchange water pipeline (19) between the hot water storage tank (7) and the heat exchanger (3) is sequentially provided with a second check valve (9) and a pressurizing pump (6), and the heat exchange water pipeline (19) between the cold water storage tank (8) and the heat exchanger (3) is provided with a third stop valve (11).

Description

Temperature control system of compressed air storage Technical Field The utility model relates to the technical field of compressed air energy storage, and provides a temperature control system of a compressed air storage. Background In the development process of the current energy field, with the vigorous rise of new energy industries such as wind power, photovoltaic and the like, a compressed air energy storage technology is generated, the basic principle is that the electric energy generated in the surplus electricity generation period by the new energy such as wind power, photovoltaic and the like or the electric energy in the low electricity price period of a power grid is used for driving a compressor unit to operate, in the process, normal pressure gas is strongly compressed to a high pressure state and then stored in a gas storage, and most of current projects adopt a manual chamber mode to construct the gas storage. However, in the energy storage stage, a large amount of gas is compressed and gushes into the gas storage, the process releases considerable heat, so that the temperature in the gas storage rises sharply, the temperature in the gas storage can be up to 85 ℃ even, in the power generation stage, the gas storage is exhausted outwards to release energy, the gas acts outwards, the internal energy of the gas is continuously consumed, the temperature drops suddenly, and in extreme cases, the temperature can drop below 0 ℃ when heat absorption from surrounding rock is not considered. The temperature in the chamber is greatly fluctuated up and down, which not only brings great negative influence to the sealing material of the chamber and seriously threatens the operation safety of the whole energy storage system, even the leakage risk occurs, but also reduces the gas density under the environment of the same gas storage pressure due to the obvious rise of the temperature of the chamber in the compression process, so that the volume of the chamber is required to be enlarged to ensure the storage of the gas with the same quality, thereby directly increasing the construction cost of the chamber, raising the construction cost of the gas storage system and greatly limiting the economy and large-scale popularization and application of the compressed air energy storage technology. Meanwhile, the compression final pressure in the existing system is forced to be increased due to the pressure superposition effect caused by temperature rise, higher power input is needed to overcome gas resistance, the energy efficiency of the system is restricted, heat energy loss and resistance fluctuation are restrained, the energy circulation efficiency is low, and the economy is insufficient. Therefore, providing a novel gas storage capable of effectively controlling temperature variation, guaranteeing sealing performance and controlling cost is a technical problem to be solved urgently by those skilled in the art. Disclosure of Invention The utility model aims to overcome the defects of the prior art, provides a temperature control system, ensures the constant temperature of a gas storage, prolongs the service life of a sealing material and saves the construction cost of the gas storage, and provides the following technical scheme for realizing the purposes: The utility model discloses a temperature control system of a compressed air storage, which comprises a storage, a heat exchanger, a compressed air pipeline and a cold and hot supply device, wherein an air inlet guide pipe and an air outlet guide pipe are arranged in the storage, the air inlet guide pipe and the air outlet guide pipe are respectively communicated with the heat exchanger through the compressed air pipeline, the heat exchanger is also communicated with the cold and hot supply device, the temperature of compressed air in the storage is controlled through the heat exchanger and the cold and hot supply device, the cold and hot supply device comprises a closed direct supply unit, an open direct supply unit and a semi-open semi-closed direct supply unit, a plurality of temperature sensors are arranged in the storage, and a booster fan is arranged in the compressed air pipeline between the storage and the heat exchanger. By adopting the technical scheme, the booster fan sucks out the compressed air in the air storage, and the compressed air flows through the heat exchanger to perform heat exchange and then flows back into the air storage, so that a closed-loop compressed air circulation path is formed, and the cold and hot supply device is respectively communicated with the heat exchanger and is used for cooling or heating the compressed air. The technical scheme is that one end of the air inlet guide pipe and one end of the air outlet guide pipe are communicated in the heat exchanger, the other end of the air inlet guide pipe and the other end of the air outlet guide pipe are respectively and extended and communicated to the center of the bottom of the a