Compressed air energy storage tank for thermal power plant

Abstract

The utility model belongs to the technical field of compressed air energy storage tanks, and particularly relates to a compressed air energy storage tank for a thermal power plant, which comprises an energy storage tank body, an air inlet pipe is communicated with the lower side of the side surface of the energy storage tank body, an air outlet pipe is communicated with the upper side of one side, far away from the air inlet pipe, of the side surface of the energy storage tank body, and a support is arranged on the lower side of the energy storage tank body. The lower side of the annular evaporator is connected with circulating refrigeration equipment through a converter pipe, and the cooling ring is connected with an air guide pipeline and an adapter valve through a communication port and communicated with compression equipment and other equipment through the adapter valve. The annular evaporator absorbs heat of air through the cooling ring, the temperature of the air can be reduced, then the air enters the energy storage tank body through the second connecting valve, the second connecting pipe and the air inlet pipe, and therefore when the air enters the energy storage tank body to be collected, the overall heat of compressed air in the energy storage tank body is reduced; therefore, the adverse effect of heat on the energy storage tank body is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of compressed air energy storage tanks, and particularly relates to a compressed air energy storage tank for thermal power plants. Background Art

[0002] A compressed air energy storage tank is a pressure vessel specifically used for storing compressed air, generally installed at the output end of an air compressor or the end of an air treatment system. Its manufacturing materials are generally high-strength alloy steel or carbon steel. The application of a compressed air energy storage tank is not limited to storing compressed air, but also in the field of compressed air energy storage, that is, using electric energy to compress air during the low grid load period, and then releasing the compressed air to drive a steam turbine to generate electricity during the high grid load period. In this way, the power demand and supply can be effectively balanced, which is of great significance for stabilizing the operation of the power grid. When air is compressed, the thermal energy increases due to the work done by the compressor. As the compressed air enters the energy storage tank, the heat inside it will accumulate and rise. The high temperature will increase the expansion pressure of the air in the energy storage tank, prompting an increase in the pressure-bearing degree of the energy storage tank, and the high temperature is likely to damage some of the equipment connected to the energy storage tank. Currently, a certain amount of water is generally accumulated at the bottom of the energy storage tank to cool the air through the evaporation of water. However, the overall heat dissipation efficiency of the tank body to the outside is relatively poor, and only cooling is carried out inside the tank, and the effect is relatively average, and it is impossible to reduce the total air heat entering the energy storage tank. Summary of the Utility Model

[0003] Aiming at the above problems, the purpose of the present utility model is to provide a compressed air energy storage tank for thermal power plants, which solves the problems that when air is compressed, the thermal energy increases due to the work done by the compressor. As the compressed air enters the energy storage tank, the heat inside it will accumulate and rise. The high temperature will increase the expansion pressure of the air in the energy storage tank, prompting an increase in the pressure-bearing degree of the energy storage tank, and the high temperature is likely to damage some of the equipment connected to the energy storage tank. Currently, a certain amount of water is generally accumulated at the bottom of the energy storage tank to cool the air through the evaporation of water. However, the overall heat dissipation efficiency of the tank body to the outside is relatively poor, and only cooling is carried out inside the tank, and the effect is relatively average, and it is impossible to reduce the total air heat entering the energy storage tank.

[0004] To achieve the above objectives, the technical solution adopted by the present utility model is as follows: A compressed air energy storage tank for a thermal power plant, comprising an energy storage tank body. An air inlet pipe is communicatively connected to the lower side of the side surface of the energy storage tank body. An air outlet pipe is communicatively connected to the upper side of the side surface of the energy storage tank body away from the air inlet pipe. A support is provided at the lower side of the energy storage tank body. An air cooling mechanism is provided on the outer side of the middle part of the energy storage tank body. The air cooling mechanism includes an annular evaporator, a heat exchange pipe, a cooling ring, a connection valve I, a connection pipe I, a connection valve II, a connection pipe II, a communication port, a drain pipe, and a perforated plate. The annular evaporator is sleeved on the outer side of the energy storage tank body. The lower side of the annular evaporator is symmetrically and communicatively connected with heat exchange pipes. The cooling ring is sleeved on the outer side of the annular evaporator. A connection valve I and a connection valve II are respectively communicatively connected to both sides of the cooling ring. A connection pipe I is communicatively connected between the connection valve I and the air outlet pipe. A connection pipe II is communicatively connected between the connection valve II and the air inlet pipe. A communication port is communicatively connected to one side of the cooling ring.

[0005] The beneficial effect of the present utility model is as follows: The lower side of the annular evaporator is connected to a circulating refrigeration device through a heat exchange pipe. The cooling ring is connected to a gas guiding pipe and a transfer valve through a communication port, and is respectively communicatively connected to a compression device and other devices through the transfer valve. When the compressed air from the compression device is sent into the cooling ring through the transfer valve and the gas guiding pipe, the annular evaporator absorbs heat from the air through the cooling ring, which can reduce the temperature of the air. Then the air enters the energy storage tank body through the connection valve II, the connection pipe II, and the air inlet pipe. Thus, when the air enters the energy storage tank body for collection, the overall heat of the compressed air in the energy storage tank body is reduced, thereby reducing the adverse effect of heat on the energy storage tank body.

[0006] In order to relieve the pressure inside the energy storage tank body;

[0007] As a further improvement of the above technical solution: A pressure gauge is provided on the upper side of the energy storage tank body. A safety relief valve is communicatively connected to the upper side of the energy storage tank body.

[0008] The beneficial effect of this improvement is as follows: When the pressure inside the energy storage tank body is abnormal, the pressure gauge can monitor the pressure value. By connecting a pressure relief pipe through the safety relief valve, opening the safety relief valve can relieve the pressure inside the energy storage tank body, ensuring the safety of the energy storage tank body.

[0009] In order to conduct sewage discharge;

[0010] As a further improvement of the above technical solution: A control valve is communicatively connected to the lower side of the energy storage tank body. A sewage discharge pipe is communicatively connected to the lower side of the control valve.

[0011] The beneficial effect of this improvement is as follows: The water at the bottom of the energy storage tank body will produce some impurities when it evaporates repeatedly and mixes with the impurities in the air. The impurities will eventually gather at the inner bottom of the energy storage tank body. By opening the control valve, sewage discharge can be carried out through the sewage discharge pipe.

[0012] In order to observe the sewage and impurities inside the observation chamber;

[0013] As a further improvement of the above technical solution: an observation chamber is communicatively arranged below the control valve, an observation window is opened on one side of the observation chamber, and the lower side of the observation chamber is communicatively connected to a sewage discharge pipe.

[0014] The beneficial effect of this improvement is that by regularly opening the control valve, the sewage and impurities inside the control valve will first enter the inside of the observation chamber. By observing the sewage and impurities inside the observation chamber, the accumulation of impurities inside the energy storage tank can be judged, so as to be used as the basis for cleaning the inside of the energy storage tank.

[0015] In order to increase the heat exchange area;

[0016] As a further improvement of the above technical solution: convex strips are evenly arranged inside the cooling ring.

[0017] The beneficial effect of this improvement is: to increase the heat exchange area.

[0018] In order to drain the condensed water;

[0019] As a further improvement of the above technical solution: porous plates are evenly arranged on the upper side inside the cooling ring, and a drain pipe is communicatively arranged on one side of the lower surface of the cooling ring.

[0020] The beneficial effect of this improvement is that during the peak electricity consumption period, by opening the first connection valve, the compressed air inside the energy storage tank enters the cooling ring through the first connecting pipe. After that, the air expands rapidly in a short time and absorbs heat quickly, and the water vapor mixed in the air will condense quickly. The porous plates can increase the adsorption effect on the condensed water. Then, the condensed water is discharged outside through the drain pipe, avoiding the condensed water entering the air guide pipe and subsequent equipment together with the air.

[0021] The parts not involved in this device are the same as the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the structural schematic diagram of the present utility model Figure 1 ;

[0023] Figure 2 is the structural schematic diagram of the present utility model Figure 2 ;

[0024] Figure 3 is the structural schematic diagram of the air cooling mechanism in the present utility model;

[0025] Figure 4 is the structural schematic diagram of the cooling ring in the present utility model;

[0026] Figure 5 It is a cross-sectional view of the inner structure of the cooling ring in the present utility model;

[0027] In the figure: 1, energy storage tank body; 2, intake pipe; 3, outlet pipe; 4, support; 5, air cooling mechanism; 51, annular evaporator; 52, commutation pipe; 53, cooling ring; 54, connection valve one; 55, connection pipe one; 56, connection valve two; 57, connection pipe two; 58, communication port; 59, drain pipe; 510, perforated plate; 6, pressure gauge; 7, safety relief valve; 8, control valve; 9, sewage pipe; 10, observation chamber. Specific implementation manners

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any restrictive effect on the protection scope of the present invention.

[0029] As Figure 1 — Figure 5As shown: A compressed air energy storage tank for a thermal power plant, including an energy storage tank body 1. A gas inlet pipe 2 is connected and arranged on the lower side of the side surface of the energy storage tank body 1. An air outlet pipe 3 is connected and arranged on the upper side of the side surface of the energy storage tank body 1 away from the gas inlet pipe 2. A bracket 4 is arranged on the lower side of the energy storage tank body 1. An air cooling mechanism 5 is arranged on the outer side of the middle part of the energy storage tank body 1. The air cooling mechanism 5 includes an annular evaporator 51, a heat exchange pipe 52, a cooling ring 53, a connecting valve one 54, a connecting pipe one 55, a connecting valve two 56, a connecting pipe two 57, a communication port 58, a drain pipe 59 and a perforated plate 510. The annular evaporator 51 is sleeved and arranged on the outer side of the energy storage tank body 1. The lower side of the annular evaporator 51 is symmetrically connected and arranged with heat exchange pipes 52. The cooling ring 53 is sleeved and arranged on the outer side of the annular evaporator 51. A connecting valve one 54 and a connecting valve two 56 are respectively connected and arranged on both sides of the cooling ring 53. A connecting pipe one 55 is connected and arranged between the connecting valve one 54 and the air outlet pipe 3. A connecting pipe two 57 is connected and arranged between the connecting valve two 56 and the gas inlet pipe 2. A communication port 58 is connected and arranged on one side of the cooling ring 53. The lower side of the annular evaporator 51 is connected to a circulating refrigeration device through the heat exchange pipe 52. The cooling ring 53 is connected to a gas guiding pipeline and a transfer valve through the communication port 58, and is respectively connected and communicated with a compression device and other devices through the transfer valve. When the compression device compresses air and sends it into the cooling ring 53 through the transfer valve and the gas guiding pipeline, the annular evaporator 51 absorbs heat from the air through the cooling ring 53, which can reduce the temperature of the air. Then the air enters the energy storage tank body 1 through the connecting valve two 56, the connecting pipe two 57 and the gas inlet pipe 2. Thus, when the air enters the energy storage tank body 1 for collection, the overall heat of the compressed air in the energy storage tank body 1 is reduced, thereby reducing the adverse impact of heat on the energy storage tank body 1. A pressure gauge 6 is arranged on the upper side of the energy storage tank body 1. A safety relief valve 7 is connected and arranged on the upper side of the energy storage tank body 1. When the pressure in the energy storage tank body 1 is abnormal, the pressure gauge 6 can monitor the pressure value. A relief pipeline is connected through the safety relief valve 7. Opening the safety relief valve 7 can relieve the pressure in the energy storage tank body 1 to ensure the safety of the energy storage tank body 1. A control valve 8 is connected and arranged on the lower side of the energy storage tank body 1. A sewage discharge pipe 9 is connected and arranged on the lower side of the control valve 8. The water at the bottom of the energy storage tank body 1 will produce some impurities after repeated evaporation and mixing with impurities in the air. The impurities will eventually gather at the inner bottom of the energy storage tank body 1. Opening the control valve 8, sewage can be discharged through the sewage discharge pipe 9. An observation chamber 10 is connected and arranged on the lower side of the control valve 8. An observation window is opened on one side of the observation chamber 10. The lower side of the observation chamber 10 is communicated with the sewage discharge pipe 9. By regularly opening the control valve 8, the sewage and impurities in the control valve 8 will first enter the inner side of the observation chamber 10. By observing the sewage and impurities in the inner side of the observation chamber 10, the accumulation situation of impurities inside the energy storage tank body 1 can be judged, so as to serve as a basis for cleaning the inside of the energy storage tank body 1. Convex strips are evenly arranged on the inner side of the cooling ring 53 to increase the heat exchange area.A perforated plate 510 is uniformly arranged on the upper side of the inner side of the cooling ring 53. One side of the lower side surface of the cooling ring 53 is communicated with a drain pipe 59. During the peak electricity consumption period, by opening the first connection valve 54, the compressed air in the energy storage tank body 1 enters the cooling ring 53 through the first connection pipe 55. After that, the air expands rapidly in a short time and quickly absorbs heat, and the water vapor mixed in the air will quickly condense. The setting of the perforated plate 510 can increase the adsorption effect on the condensed water. Then, the condensed water is discharged outside through the drain pipe 59, avoiding the condensed water entering the air guiding pipeline and subsequent equipment together with the air.,

[0030] The working principle and usage process of the utility model:

[0031] During use, the lower side of the annular evaporator 51 is connected to a circulating refrigeration device through a commutation pipe 52. The cooling ring 53 is connected to a gas guiding pipe and a transfer valve through a communication port 58, and is respectively connected to a compression device and other devices through the transfer valve. When the compressed air from the compression device is sent into the cooling ring 53 through the transfer valve and the gas guiding pipe, the annular evaporator 51 absorbs heat from the air through the cooling ring 53, which can reduce the temperature of the air. Then, the air enters the energy storage tank body 1 through a second connection valve 56, a second connecting pipe 57 and an air inlet pipe 2. Thus, when the air enters the energy storage tank body 1 for collection, the overall heat of the compressed air in the energy storage tank body 1 is reduced, thereby reducing the adverse effect of heat on the energy storage tank body 1. In addition, during use, a pressure gauge 6 is arranged on the upper side of the energy storage tank body 1, and a safety pressure relief valve 7 is communicated and arranged on the upper side of the energy storage tank body 1. When the pressure in the energy storage tank body 1 is abnormal, the pressure gauge 6 can monitor the pressure value. The safety pressure relief valve 7 is connected to a pressure relief pipe, and by opening the safety pressure relief valve 7, the energy storage tank body 1 can be depressurized to ensure the safety of the energy storage tank body 1. In addition, during use, a control valve 8 is communicated and arranged on the lower side of the energy storage tank body 1, and a sewage discharge pipe 9 is communicated and arranged on the lower side of the control valve 8. The water at the bottom of the energy storage tank body 1 will produce some impurities after repeated evaporation and mixing with impurities in the air. The impurities will eventually gather at the inner bottom of the energy storage tank body 1. By opening the control valve 8, sewage discharge can be carried out through the sewage discharge pipe 9. In addition, an observation chamber 10 is communicated and arranged on the lower side of the control valve 8. An observation window is opened on one side of the observation chamber 10, and the lower side of the observation chamber 10 is communicated with the sewage discharge pipe 9. By regularly opening the control valve 8, the sewage and impurities in the control valve 8 will first enter the inner side of the observation chamber 10. By observing the sewage and impurities in the inner side of the observation chamber 10, the accumulation situation of impurities inside the energy storage tank body 1 can be judged, which can be used as a basis for cleaning the inside of the energy storage tank body 1. In addition, during use, convex strips are evenly arranged on the inner side of the cooling ring 53 to increase the heat exchange area. In addition, during use, porous plates 510 are evenly arranged on the upper side of the inner side of the cooling ring 53. One side of the lower surface of the cooling ring 53 is communicated with a drain pipe 59. During the peak electricity consumption period, by opening a first connection valve 54, after the compressed air in the energy storage tank body 1 enters the cooling ring 53 through a first connecting pipe 55, the air will expand rapidly in a short time and absorb heat quickly, and the water vapor mixed in the air will condense quickly. The porous plates 510 can increase the adsorption effect on the condensed water. Then, the condensed water is discharged through the drain pipe 59 to prevent the condensed water from entering the gas guiding pipe and subsequent equipment together with the air.

[0032] It should be noted that in this article, the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or device.

[0033] In this article, specific examples are used to illustrate the principles and implementation modes of the present invention. The description of the above examples is only used to help understand the method and its core idea of the present invention. The above is only the preferred implementation mode of the present invention. It should be noted that due to the limitation of literal expression, objectively there are infinite specific structures. For those of ordinary skill in the art, without departing from the principle of the present invention, several improvements, refinements or changes can also be made, or the above technical features can be combined in an appropriate way; these improvements, refinements, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. A compressed air energy storage tank for a thermal power plant, characterized in that: It includes an energy storage tank body (1). An air inlet pipe (2) is communicatively connected to the lower side of the side surface of the energy storage tank body (1). An air outlet pipe (3) is communicatively connected to the upper side of the side surface of the energy storage tank body (1) far from the air inlet pipe (2). A support (4) is arranged on the lower side of the energy storage tank body (1). An air cooling mechanism (5) is arranged on the outer side of the middle part of the energy storage tank body (1). The air cooling mechanism (5) includes an annular evaporator (51), a commutation pipe (52), a cooling ring (53), a connection valve one (54), a connection pipe one (55), a connection valve two (56), a connection pipe two (57), a communication port (58), a drain pipe (59) and a perforated plate (510). The annular evaporator (51) is sleeved on the outer side of the energy storage tank body (1). The lower side of the annular evaporator (51) is symmetrically and communicatively connected with the commutation pipe (52). The cooling ring (53) is sleeved on the outer side of the annular evaporator (51). The connection valve one (54) and the connection valve two (56) are respectively communicatively connected to both sides of the cooling ring (53). A connection pipe one (55) is communicatively connected between the connection valve one (54) and the air outlet pipe (3). A connection pipe two (57) is communicatively connected between the connection valve two (56) and the air inlet pipe (2). A communication port (58) is communicatively connected to one side of the cooling ring (53).

2. The compressed air energy storage tank for a thermal power plant according to claim 1, wherein: A pressure gauge (6) is arranged on the upper side of the energy storage tank body (1). A safety relief valve (7) is communicatively connected to the upper side of the energy storage tank body (1).

3. The compressed air energy storage tank for thermal power plants according to claim 1, wherein: A control valve (8) is communicatively connected to the lower side of the energy storage tank body (1). A sewage discharge pipe (9) is communicatively connected to the lower side of the control valve (8).

4. A compressed air energy storage tank for a thermal power plant according to claim 3, characterized in that: An observation chamber (10) is communicatively connected to the lower side of the control valve (8). An observation window is opened on one side of the observation chamber (10). The lower side of the observation chamber (10) is communicatively connected to the sewage discharge pipe (9).

5. A compressed air energy storage tank for a thermal power plant according to claim 1, characterized in that: Convex strips are evenly arranged on the inner side of the cooling ring (53).

6. A compressed air energy storage tank for a thermal power plant according to claim 1, characterized in that: The perforated plate (510) is evenly arranged on the upper side of the inner side of the cooling ring (53). A drain pipe (59) is communicatively connected to one side of the lower surface of the cooling ring (53).

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