Air dehumidification device used in compressed air energy storage system of new energy power station

Abstract

The utility model relates to the technical field of air dehumidification, in particular to an air dehumidification device used in a compressed air energy storage system of a new energy power station, which comprises a drainage box, a condensation box and a membrane type filter box which are sequentially communicated from left to right, a plurality of flow guide cavities are formed in the flow guide box, and a flow guide unit and a pretreatment unit are arranged at each of an air inlet port and an air outlet port of each flow guide cavity; a mounting cavity is formed in the inner wall of the condensing box, a condensing unit is arranged in the mounting cavity, and a confluence unit is arranged in the condensing cavity; a filtering cavity communicated with the flow guide cavity is formed in the membrane type filtering box, and a plurality of groups of filtering membranes are arranged in the membrane type filtering box. The drainage box conveys and guides to-be-compressed air into the condensation box and the membrane type filter box, solid impurities in the air are filtered out, condensation type dehumidification and membrane type dehumidification are conducted through the condensation box and the membrane type filter box, the moisture content in the to-be-compressed air is reduced, corrosion and damage to an air storage tank, a compressor and other equipment are reduced, and the service life of the equipment is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of air dehumidification, and particularly relates to an air dehumidification device for a compressed air energy storage system in a new energy power station. Background Art

[0002] Compressed air energy storage technology is widely used in new energy power stations. It is a technology that uses renewable energy to generate electricity, converts electrical energy into the potential energy of compressed air for storage during the low-load period of the power grid, and releases it during the peak period to supply power.

[0003] When compressed air energy storage is carried out in a new energy power station, due to the high humidity of the air in coastal areas, the compressed wet air will carry condensed water, and the condensed water will cause corrosion and damage to subsequent equipment such as gas storage tanks and compressors. Therefore, there is an urgent need to provide a solution to improve this problem, which can dehumidify the air entering the compressed air energy storage system, reduce the moisture content in the compressed air, and reduce the corrosion and damage to equipment such as gas storage tanks and compressors, thereby extending the service life of the equipment. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide, in view of the above-mentioned deficiencies of the prior art, an air dehumidification device for a compressed air energy storage system in a new energy power station, which can dehumidify the wet air entering the compressed air energy storage system, reduce the moisture content in the compressed air through efficient dehumidification, and reduce the corrosion and damage to equipment such as gas storage tanks and compressors, thereby extending the service life of the equipment.

[0005] The technical solution adopted by the utility model is: an air dehumidification device for a compressed air energy storage system in a new energy power station, comprising a diversion box, a condensation box and a membrane filtration box which are connected in sequence from left to right;

[0006] A plurality of diversion chambers are arranged in the diversion box, partition boards are arranged between each diversion chamber, and a diversion unit for guiding and transporting the air to be compressed into the condensation box and the membrane filtration box respectively and a pretreatment unit for filtering solid impurities in the air to be compressed are arranged at the air inlet port and the air outlet port of each diversion chamber;

[0007] A plurality of condensation chambers communicated with the diversion chambers are arranged in the condensation box, the number of the condensation chambers is equal to that of the diversion chambers, an installation cavity is arranged on the inner wall of the condensation box, a condensation unit for removing the moisture content in the air to be compressed is arranged in the installation cavity, and a confluence unit for converging condensed water is arranged in each condensation chamber;

[0008] A plurality of filtering chambers communicating with the diversion chamber are formed in the membrane filtration box. The number of the filtering chambers is equal to that of the condensation chambers. A plurality of groups of filter membranes are arranged in the membrane filtration box. The number of the filter membranes is equal to that of the filtering chambers. Each filtering chamber communicates with one group of filter membranes to form an independent and sealed filtering cavity.

[0009] Compared with the prior art, the beneficial effects of the present utility model are as follows: Through the diversion unit and the pretreatment unit arranged in the diversion box, the compressed air to be treated can be guided and transported into the condensation box, and the solid impurities in the compressed air can be filtered to protect the gas storage tank and subsequent equipment from pollution. The diversion chamber, the condensation chamber and the filtering chamber are all arranged in plurality, so that the compressed air to be treated can be divided into multiple groups, which is convenient for subsequent condensation dehumidification of the compressed air to be treated. At the same time, the filtering pressure during the membrane dehumidification of the subsequent filter membrane and the compressed air to be treated can be reduced, and the service life of the filter membrane can be prolonged.

[0010] Most of the moisture in the compressed air to be treated is removed in advance by the condensation unit in the condensation box, so as to improve the dehumidification efficiency and effect of the filter membrane in the membrane filtration box during membrane dehumidification. The converging unit can recover the condensed water generated in the condensation box and the membrane filtration box, so that the compressed air to be treated can be efficiently dehumidified, the dryness of the compressed air to be treated can be ensured, and the corrosion and damage of equipment such as the gas storage tank and the compressor by the condensed water can be avoided, thereby prolonging the service life of the equipment.

[0011] Preferably, the diversion unit includes a diversion fan installed at the air inlet port of the diversion chamber and a filter cover installed on the outer side of the diversion fan located outside the diversion chamber.

[0012] The beneficial effect thereof is that the compressed air to be treated is transported and guided into the diversion chamber in the diversion box by the diversion fan, and the solid impurities in the compressed air to be treated are preliminarily filtered by the filter cover. At the same time, the filter cover can protect the diversion fan from being damaged.

[0013] Preferably, the pretreatment unit includes a plurality of filter meshes arranged in the diversion chamber. The plurality of filter meshes are arranged and distributed in the diversion chamber.

[0014] The beneficial effect thereof is that the filtering specifications of the plurality of filter meshes arranged in the diversion chamber can be different, so that solid impurities with different particle sizes in the compressed air to be treated can be filtered, thereby protecting the gas storage tank and subsequent equipment from pollution by solid impurities and prolonging the service life of the gas storage tank and subsequent equipment.

[0015] Preferably, the condensation unit includes a thermoelectric cooler installed in the installation chamber, and a thermal insulation layer filled between the thermoelectric cooler and the installation cavity. The thermoelectric cooler is fitted and installed on the inner wall of the installation cavity close to the condensation chamber side.

[0016] The beneficial effect is that the moisture in the compressed air to be treated in the condensation chamber reaches its condensation point through the thermoelectric cooler, and condensed water is formed on the side wall of the condensation box. The thermal insulation layer can insulate the thermoelectric cooler, ensure the stability of the condensation temperature and reduce the waste of resources.

[0017] Preferably, the confluence unit includes a confluence box arranged in each condensation chamber and a liquid accumulation box installed at the bottom of the condensation box. A confluence pipe is arranged in each confluence box, and each confluence pipe is communicated with the inside of the liquid accumulation box.

[0018] The beneficial effect is that in this way, the condensed water generated in the condensation chamber is gathered into the liquid accumulation box through the confluence box and the confluence pipe, thus preventing the condensed water from accumulating in the condensation chamber and affecting the subsequent condensation and dehumidification of the compressed air to be treated.

[0019] Preferably, the bottom plate of the confluence box is gradually inclined toward the side relatively close to the membrane filtration box. The beneficial effect is that by setting the bottom plate of the confluence box in an inclined manner, it is convenient for the condensed water to gather at the bottom of the confluence box.

[0020] Preferably, the multiple groups of filter membranes are arranged and distributed in the membrane filtration box, and the space in the filtration box is divided into multiple independent and enclosed filtration cavities. Each filtration cavity is communicated with one of the filtration chambers. The beneficial effect is that through the multiple filtration cavities formed in the filtration box and communicated with the filtration chambers, the membrane dehumidification treatment of the compressed air to be treated can be carried out simultaneously by multiple groups of filter membranes, effectively reducing the filtration pressure when the filter membranes perform membrane dehumidification on the compressed air to be treated, thereby prolonging the service life of the filter membranes.

[0021] Preferably, diversion holes are opened at the bottom of each filtration cavity in the membrane filtration box, and the diversion holes are communicated with the confluence box arranged at the bottom of the condensation chamber.

[0022] The beneficial effect is that in this way, by connecting the diversion holes with the confluence box, the condensed water formed after membrane dehumidification in each filtration cavity can be transferred into the confluence box, preventing a large amount of condensed water from accumulating in the filtration cavity and affecting the dehumidification efficiency and effect of the filter membranes. Description of the Drawings

[0023] Figure 1Schematic three-dimensional structure diagram of an air dehumidification device for a compressed air energy storage system in a new energy power station according to the present utility model;

[0024] Figure 2 Cross-sectional view of the diversion box and the condensation box in an air dehumidification device for a compressed air energy storage system in a new energy power station according to the present utility model;

[0025] Figure 3 Cross-sectional view of a partial structure in an air dehumidification device for a compressed air energy storage system in a new energy power station according to the present utility model;

[0026] Figure 4 Cross-sectional view of the membrane filtration box in an air dehumidification device for a compressed air energy storage system in a new energy power station according to the present utility model.

[0027] Illustration description:

[0028] 1. Diversion box; 101. Diversion chamber; 102. Partition; 103. Diversion unit; 1031. Diversion fan; 1032. Filter cover; 104. Pretreatment unit; 1041. Filter mesh; 2. Condensation box; 201. Condensation chamber; 202. Installation cavity; 203. Condensation unit; 2031. Thermoelectric cooler; 2032. Thermal insulation layer; 204. Confluence unit; 2041. Confluence box; 2042. Liquid accumulation box; 2043. Confluence pipe; 3. Membrane filtration box; 301. Filter membrane; 302. Filtration chamber; 303. Diversion hole. Detailed implementation manners

[0029] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, terms such as "installation", "provided with", "connection" should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0031] See Figure 1 , in the embodiment of the present utility model, an air dehumidification device for a compressed air energy storage system in a new energy power station is provided, which includes a diversion box 1, a condensation box 2, and a membrane filtration box 3 that are connected in sequence from left to right.

[0032] The air to enter the compressed air energy storage system is guided and conveyed into the condensation box 2 through the diversion box 1, and impurities in the air to be compressed are intercepted and filtered to prevent the impurities in the air to be compressed from contaminating subsequent equipment such as the gas storage tank and the compressor. Under the action of the condensation box 2, the air to be compressed is subjected to condensation dehumidification treatment, thereby removing most of the moisture existing in the air to be compressed, creating better conditions for the membrane dehumidification carried out by the subsequent membrane filtration box 3, and improving the efficiency and effect of membrane dehumidification.

[0033] In some embodiments, sealing ring members are provided at the joints of the diversion box 1, the condensation box 2, and the membrane filtration box 3 to meet the sealing requirements for conveying the air to be compressed.

[0034] In some embodiments, referring to Figure 2 , a diversion chamber 101 is formed inside the diversion box 1, and the air to be compressed is guided into the condensation box 2 through the diversion chamber 101 for condensation dehumidification treatment; a partition 102 is provided inside the diversion box 1 in the diversion chamber 101, so that the diversion chamber 101 is divided into multiple parts, so that the air to be compressed can be partitioned and grouped, which is convenient for subsequent dehumidification treatment of the air to be compressed in the condensation box 2 and the membrane filtration box 3.

[0035] In some embodiments, referring to Figure 2 , a diversion unit 103 and a pretreatment unit 104 are respectively provided at the air inlet port and the air outlet port of each diversion chamber 101; the air to be compressed is guided and conveyed into the condensation box 2 and the membrane filtration box 3 through the diversion unit 103 for condensation dehumidification and membrane dehumidification treatment. First, most of the moisture in the compressed air is removed through condensation dehumidification to reduce the humidity to a certain level, and then further deep dehumidification is carried out through membrane dehumidification, so as to meet higher dryness requirements; the pretreatment unit 104 can filter impurities in the compressed air to protect the gas storage tank and subsequent equipment from pollution.

[0036] In some embodiments, referring to Figure 2 , the diversion unit 103 includes a diversion fan 1031 installed at the air inlet port of the diversion chamber 101, and a filter cover 1032 installed on the outer part of the diversion fan 1031 in the diversion chamber 101.

[0037] In this way, the external air to be compressed is guided and conveyed into the diversion chamber 101 through the diversion fan 1031, and the air to be compressed is guided and conveyed into the condensation box 2 and the membrane filtration box 3 through the diversion chamber 101 for dehumidification treatment. At the same time, when the filter cover 1032 protects the diversion fan 1031, it can initially filter out larger impurities existing in the air to be compressed.

[0038] In some embodiments, referring to Figure 2, the preprocessing unit 104 includes a filter mesh 1041 disposed in the diversion chamber 101, which further filters out impurities existing in the air to be compressed, protecting the gas storage tank and subsequent equipment from contamination.

[0039] In some embodiments, referring to Figure 2 , the filter mesh 1041 can be set as multiple groups, and the multiple groups of filter meshes 1041 are arranged and distributed in the diversion chamber 101. Specifically, the filtration pore sizes of the multiple groups of filter meshes 1041 can be different, so as to be able to filter solid impurities with different particle sizes in the air to be compressed, and can reduce the pressure during the filtration of the filter mesh 1041 to a certain extent, thereby efficiently filtering the solid impurities existing in the air to be compressed.

[0040] In some embodiments, referring to Figure 2 , a condensation chamber 201 is formed in the condensation box 2, and the condensation chamber 201 is in communication with the diversion chamber 101 in the diversion box 1. An installation cavity 202 is formed in the inner wall of the condensation box 2, and a condensation unit 203 and a confluence unit 204 are arranged in the installation cavity 202. Through the condensation unit 203, the air to be compressed can be subjected to condensation dehumidification treatment in the condensation box 2, and the condensed water generated during condensation dehumidification is converged through the confluence unit 204, avoiding a large amount of condensed water accumulating inside the condensation box 2 and affecting the condensation dehumidification treatment of the air to be compressed.

[0041] In some embodiments, referring to Figure 2 , the condensation unit 203 includes a semiconductor refrigeration sheet 2031 and a heat insulation layer 2032; the semiconductor refrigeration sheet 2031 is adhesively installed on the inner wall of the installation cavity 202 close to the condensation chamber 201, and a heat insulation layer 2032 is filled between the other side of the semiconductor refrigeration sheet 2031 and the side wall of the installation cavity 202.

[0042] By changing the temperature of the inner wall of the condensation box 2 through the semiconductor refrigeration sheet 2031, the moisture in the air to be compressed reaches its condensation point and forms condensed water on the inner wall of the condensation box 2, thereby removing most of the moisture in the air to be compressed. Under the action of the heat insulation layer 2032, the reduction time of the cold air temperature of the semiconductor refrigeration sheet 2031 can be delayed, the utilization rate of resources can be effectively improved, and the waste of resources can be avoided.

[0043] In some embodiments, a temperature sensor and a humidity sensor are arranged in the condensation box 2, so as to be able to monitor the temperature and humidity of the air to be compressed in real time, facilitating the control of the temperature of the semiconductor refrigeration sheet 2031 to achieve the best dehumidification effect in the condensation box 2.

[0044] In some embodiments, referring to Figure 2 and Figure 3, the condensation chambers 201 in the condensation box 2 are separated into a plurality of condensation chambers 201 by the confluence unit 204. The number of condensation chambers 201 is equal to the number of diversion chambers 101 in the diversion box 1, and each condensation chamber 201 is in communication with the corresponding diversion chamber 101 provided in the diversion box 1. Specifically, both the condensation chamber 201 and the diversion chamber 101 are provided in two numbers. Separating the diversion chamber 101 into two to a certain extent facilitates the condensation of moisture in the compressed air to be treated.

[0045] In some embodiments, refer to Figure 2 , the confluence unit 204 includes a confluence box 2041 provided in each condensation chamber 201 and a liquid accumulation box 2042 installed at the bottom of the condensation box 2. A confluence pipe 2043 is provided in each confluence box 2041, and each confluence pipe 2043 is in communication with the liquid accumulation box 2042. In this way, the condensed water formed on the inner wall of the condensation box 2 can be converged by the confluence box 2041 and transported to the liquid accumulation box 2042 at the bottom of the condensation box 2 through the confluence pipe 2043 for collection and treatment.

[0046] In some embodiments, refer to Figure 3 , the bottom plate of the confluence box 2041 is gradually inclined along the side relatively close to the membrane filtration box 3. In this way, it is convenient for the condensed water converged in the confluence box 2041 to quickly flow into the confluence pipe 2043 connected to the bottom of the confluence box 2041, so that the condensed water can enter the liquid accumulation box 2042.

[0047] In some embodiments, refer to Figure 3 and Figure 4 , a plurality of filtration chambers 302 are formed in the membrane filtration box 3. Specifically, the number of filtration chambers 302 is equal to the number of condensation chambers 201, and the number of filtration chambers 302 is set to two.

[0048] In some embodiments, refer to Figure 2 , a plurality of groups of filter membranes 301 are arranged and distributed in the membrane filtration box 3. The number of groups of filter membranes 301 is equal to the number of filtration chambers 302, and the filtration cavities formed by the filter membranes 301 and the membrane filtration box 3 are all in communication with the corresponding filtration chambers 302 provided in the membrane filtration box 3, so as to form an independent enclosed space for membrane dehumidification of the compressed air to be treated.

[0049] In this way, the compressed air to be treated transported from the condensation chamber 201 to the filtration chamber 302 can be subjected to membrane dehumidification treatment. At the same time, setting the filtration chamber 302 and the filter membrane 301 in multiple numbers can reduce the pressure on the filter membrane 301 during membrane dehumidification of the compressed air to be treated, improve the membrane filtration efficiency and effect of the filter membrane 301, and extend the service life of the filter membrane 301.

[0050] In some embodiments, refer to Figure 3 andFigure 4 , a diversion hole 303 is formed at the bottom of each filtering cavity in the membrane filtering box 3, and the diversion hole 303 is communicated with a confluence box 2041 arranged at the bottom of the condensation chamber 201.

[0051] The condensed water formed by membrane dehumidification of the filter membrane 301 in the membrane filtering box 3 is conveyed into the confluence box 2041 through the diversion hole 303, thereby preventing the condensed water from accumulating at the bottom of the filter membrane 301 and affecting the membrane dehumidification efficiency and effect of the filter membrane 301.

[0052] In some embodiments, referring to Figure 4 , an exhaust pipe communicated with an external device compressor is arranged on the membrane filtering box 3, so that the dried compressed air after dehumidification can be conveyed into the compressor for air compression, and finally conveyed into the compressed air energy storage system in the new energy power station for compressed air energy storage.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An air dehumidification device used in a compressed air energy storage system of a new energy power station, characterized in that: It includes a drainage box, a condensation box and a membrane filter box which are connected and arranged in sequence from left to right; A plurality of guide chambers are provided in the guide box, a partition is provided between each of the guide chambers, and an air inlet port and an air outlet port of each of the guide chambers are respectively provided with a guide unit for guiding and delivering the air to be compressed to the condensation box and the membrane filter box, and a pretreatment unit for filtering solid impurities in the air to be compressed; The condensation box is provided with a plurality of condensation chambers interconnected with the guide chamber, the number of the condensation chambers is equal to the number of the guide chambers, the inner wall of the condensation box is provided with an installation cavity, the installation cavity is provided with a condensation unit for removing moisture content in the air to be compressed, and each condensation chamber is provided with a confluence unit for gathering condensed water; The membrane filter box is provided with a plurality of filter chambers interconnected with the guide chamber, the number of the filter chambers is equal to the number of the condensation chambers, the membrane filter box is provided with a plurality of groups of filter membranes, the number of the filter membranes is equal to the number of the filter chambers, and each of the filter chambers is interconnected with the group of filter membranes to form an independent and closed filter chamber.

2. The air dehumidification device used in the compressed air energy storage system of a new energy power station according to claim 1, characterized in that: The drainage unit includes a drainage fan installed at the air inlet port of the drainage chamber and a filter cover installed on the drainage fan and located on the outer side of the drainage chamber.

3. The air dehumidification device used in the compressed air energy storage system of a new energy power station according to claim 1, characterized in that: The pretreatment unit includes a filter membrane arranged in the flow guide chamber. The filter membrane is arranged in multiple groups, and the multiple groups of filter membranes are arranged and distributed in the flow guide chamber.

4. The air dehumidification device used in the compressed air energy storage system of a new energy power station according to claim 1, characterized in that: The condensing unit includes a semiconductor refrigeration sheet installed in the installation cavity, and a thermal insulation layer filled between the semiconductor refrigeration sheet and the installation cavity, and the semiconductor refrigeration sheet is installed on the inner wall of the installation cavity close to the condensation chamber.

5. The air dehumidification device used in the compressed air energy storage system of a new energy power station according to claim 1, characterized in that: The confluence unit includes a confluence box arranged in each condensation chamber and a liquid storage box installed at the bottom of the condensation box, and each confluence box is provided with a confluence pipe, and each confluence pipe is connected to the inside of the liquid storage box.

6. The air dehumidification device used in the compressed air energy storage system of a new energy power station according to claim 5, characterized in that: The bottom plate of the junction box is gradually inclined along a side relatively close to the membrane filter box.

7. The air dehumidification device used in the compressed air energy storage system of a new energy power station according to claim 6, characterized in that: The plurality of groups of filter membranes are arranged and distributed in the membrane filter box, and the space in the filter box is divided into a plurality of independently closed filter cavities, and each of the filter cavities is interconnected with one of the filter chambers.

8. The air dehumidification device used in the compressed air energy storage system of a new energy power station according to claim 7, characterized in that: A flow guide hole is provided at the bottom of each filter cavity in the membrane filter box, and the flow guide hole is communicated with the junction box arranged at the bottom of the condensation chamber.

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