CN216203666U - Heat accumulating type compressed air energy storage system - Google Patents

Abstract

The utility model provides a heat accumulating type compressed air energy storage system, which comprises a heat supply loop, a cold supply loop, a heat accumulation device, a compression loop, a heat accumulation and heat supply circulation device, a gas storage loop and a heat release loop, wherein the heat supply loop is connected with the heat accumulation loop, the heat accumulation device is also connected with a preheating structure, the heat accumulation and heat supply circulation device is connected with the periphery of the heat accumulation device, the heat accumulation and heat supply circulation device can be fixedly connected through an annular fixing piece and a locking screw, the heat accumulation and heat supply circulation loop is connected with the heat accumulation loop, the heat accumulation and heat supply circulation device comprises a heat accumulation and heat supply pipeline, a heat supply end, a circulation structure and a heating structure, the heat accumulation and heat supply pipeline is spirally arranged outside the heat accumulation device, an annular heat insulation board is arranged outside the heat accumulation and heat supply pipeline, and the annular heat insulation board are connected with a heat accumulation tank through a fixing structure, the heat storage circulating pipeline arranged in a spiral mode can uniformly heat and heat the heat storage device.

Description

Heat accumulating type compressed air energy storage system

Technical Field

The utility model relates to the technical field of compressed air energy storage, in particular to a heat accumulating type compressed air energy storage system.

Background

The compressed air energy storage is that the residual electric quantity is utilized when the load of the electric power system is in the valley, the air compressor is driven by the motor, and the air is pressed into the closed large-capacity underground space serving as the air storage chamber, i.e. the electric energy which can not be stored is converted into the air pressure potential energy of the compressed air which can be stored and is stored in the air storage chamber. When the generated energy of the system is insufficient, compressed air is mixed with oil or natural gas through the heat exchanger for combustion, and is introduced into the gas turbine to do work for power generation, so that the peak regulation requirement of the power system is met. The energy storage subsystem composed of the air compressor, the motor, the air storage chamber and the like stores low-price electric energy in a power station valley in the air storage chamber such as a rock cave and a waste mine through compressed air, and the motor generator is coupled with the air compressor through the coupler during energy storage and is decoupled with the gas turbine. When the power system is in peak load, compressed air is used for combustion to drive a gas turbine to generate electricity, the gas turbine, a combustion chamber, a heater and other electricity generating subsystems are used for generating electricity, and a motor generator is coupled with the gas turbine and is decoupled with a gas compressor during electricity generation. However, in the prior art, the heat preservation technology of the heat storage device is still to be improved, and the heat preservation effect is general.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the utility model provides a heat accumulating type compressed air energy storage system which comprises a heat supply loop, a cold supply loop, a heat accumulation device, a compression loop, a heat accumulation and heat supply circulation device, an air storage loop and a heat release loop, wherein the heat supply loop is connected with the heat accumulation loop, the heat accumulation device is also connected with a preheating structure, the heat accumulation and heat supply circulation device is connected to the periphery of the heat accumulation device, and the heat accumulation and heat supply circulation pipeline can be fixedly connected through an annular fixing piece and a locking screw.

As an improvement of the utility model, the heat storage and supply circulation loop is connected with a heat storage loop, the heat storage and supply circulation device is connected with a heat storage device, the heat storage and supply circulation device comprises a heat storage and supply pipeline, a heat supply end, a circulation structure and a heating structure, the heat storage and supply circulation pipeline is spirally arranged outside the heat storage device, the heat supply pipeline comprises an air inlet, an air outlet, an air inlet pipeline and an air outlet pipeline, the air inlet is connected with the heat supply end, the air outlet is connected with the circulation structure, the air inlet end and the air outlet end are provided with control valves, the heat storage and supply pipeline is also provided with an annular heat insulation plate outside, and the heat storage and supply pipeline and the annular heat insulation plate are fixedly connected with the heat storage tank through a fixing structure. The heat storage circulating pipeline arranged in a spiral mode can uniformly heat and heat the heat storage device, and the middle of the heat storage circulating pipeline can be provided with a supporting protrusion used for supporting the heat storage circulating pipeline on the heat storage device.

As an improvement of the utility model, the circulating structure comprises a circulating fan, a temperature sensor is further arranged at the heat supply end, the temperature of the gas heated in the pipeline can be detected in real time through the temperature sensor, the heating structure comprises a heating cavity, a heating assembly is arranged in the heating cavity, and the gas enters the heating cavity through a heat storage and heat supply pipeline, passes through the circulating fan, is heated and then enters the gas inlet pipeline through the heat supply end.

As an improvement of the utility model, inward bending parts are arranged between the heat supply end and the circulating structure and between the air outlet pipeline and the circulating structure, and the circulating structure connected with the bending parts can keep the circulating structure aligned with the outer side of the heat storage and heat supply pipeline, so that the use space of equipment is reduced.

As an improvement of the utility model, the air inlet end is provided with a filtering structure, the filtering structure is hermetically connected with the air inlet pipeline, filter screens are arranged in the filtering structure, and a drying structure is arranged between the filter screens, so that moisture in air can be dried.

As an improvement of the utility model, the preheating structure comprises a preheating tank, and a heating element is arranged in the preheating tank.

As an improvement of the present invention, the bent portion may be provided in a curved duct structure, or may be provided in a linear duct structure.

The utility model has the beneficial effects that: the utility model provides a heat accumulating type compressed air energy storage system which comprises a heat supply loop, a cold supply loop, a heat accumulation device, a compression loop, a heat accumulation and heat supply circulation device, a gas storage loop and a heat release loop, wherein the heat supply loop is connected with the heat accumulation loop, the heat accumulation device is also connected with a preheating structure, the heat accumulation and heat supply circulation device is connected to the periphery of the heat accumulation device, and the heat accumulation and heat supply circulation pipeline can be fixedly connected through an annular fixing piece and a locking screw. The heat accumulation and supply circulation loop is connected with the heat accumulation loop, the heat accumulation and supply circulation device is connected with the heat accumulation device, the heat accumulation and supply circulation device comprises a heat accumulation and supply pipeline, a heat supply end, a circulation structure and a heating structure, the heat accumulation and supply pipeline is spirally arranged outside the heat accumulation device, an annular heat insulation plate is further arranged outside the heat accumulation and supply pipeline, and the heat accumulation and supply pipeline, the annular heat insulation plate and the heat accumulation tank are fixedly connected through a fixing structure. The heat storage circulating pipeline arranged in a spiral mode can uniformly heat and heat the heat storage device.

Drawings

Fig. 1 is a schematic structural view of a thermal storage device according to the present invention.

FIG. 2 is a schematic diagram of the structure of the ring-shaped heat-insulating plate according to the present invention.

List of reference numerals: the system comprises an air inlet pipeline 101, a filtering structure 102, a control valve 103, an air inlet 104, a preheating structure 105, a heat storage loop 106, a fixed structure 107, a heat storage and supply pipeline 108, a heat storage device 109, a circulating structure 110, a bending part 111, a heating structure 112, a heating cavity 113, a temperature sensor 114, a heat storage and supply circulating device 115, an annular heat insulation board 116, an air outlet pipeline 117 and an air outlet 118.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the utility model and not as limiting the scope of the utility model.

Example (b): the utility model provides a heat accumulating type compressed air energy storage system which comprises a heat supply loop, a cold supply loop, a heat accumulation loop 106, a heat accumulation device 109, a compression loop, a heat accumulation and heat supply circulation device 115, an air storage loop and a heat release loop, wherein the heat supply loop is connected with the heat accumulation loop 106, the heat accumulation device 109 is also connected with a preheating structure 105, the heat accumulation and heat supply circulation device 115 is connected to the periphery of the heat accumulation device 109, and heat accumulation and heat supply circulation pipelines can be fixedly connected through annular fixing pieces and locking screws. The heat storage and supply circulation loop is connected with the heat storage loop 106, the heat storage and supply circulation device 115 is connected with the heat storage device 109, the heat storage and supply circulation device 115 comprises a heat storage and supply pipeline 108, a heat supply end, a circulation structure 110 and a heating structure 112, the heat storage and supply circulation pipeline is spirally arranged outside the heat storage device 109, the heat supply pipeline comprises an air inlet 104, an air outlet 118, an air inlet pipeline 101 and an air outlet pipeline 117, the air inlet 104 is connected with the heat supply end, the air outlet 118 is connected with the circulation structure 110, the air inlet end and the air outlet end are provided with a control valve 103, an annular heat insulation board 116 is further arranged outside the heat storage and supply pipeline 108, and the heat storage and supply pipeline 108 and the annular heat insulation board 116 are fixedly connected with the heat storage tank through a fixing structure 107. The heat storage circulation pipe arranged spirally can uniformly heat and insulate the heat storage device 109, and the middle part of the heat storage circulation pipe can be provided with a support protrusion for supporting the heat storage circulation pipe on the heat storage device 109. Circulation structure 110 includes circulating fan, heat supply end department still is provided with temperature sensor 114, can be through the gaseous temperature of temperature sensor 114 real-time detection pipeline internal heating, heating structure 112 includes heating chamber 113, and heating chamber 113 is inside to have a heating element, and gaseous entering heating chamber 113 after inside heats through heating end entering admission line 101 through heat supply end after heating through heat accumulation heat supply pipeline 108 through circulating fan. The inward bending parts 111 are arranged between the heat supply end and the circulating structure 110 and between the air outlet pipeline 117 and the circulating structure 110, and the circulating structure 110 connected with the bending parts 111 can keep the outside of the circulating structure 110 and the heat storage and supply pipeline 108 aligned, so that the use space of equipment can be reduced. The inlet end department sets up filtration 102, and filtration 102 and air intake pipe 101 sealing connection, the inside filter screen that has of filtration 102 are provided with dry construction between the filter screen, can carry out the drying to moisture in the air. The preheating structure 105 includes a preheating tank in which a heating member is disposed. The bent portion 111 is provided in a curved duct structure, and may be provided in a linear duct structure.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various modifications can be made to the embodiments described in the foregoing embodiments, or some or all of the technical features of the embodiments can be equivalently replaced, and the modifications or the replacements do not make the essence of the corresponding technical solutions depart from the scope of the embodiments of the present invention.

Claims (7)

1. The heat accumulating type compressed air energy storage system is characterized by comprising a heat supply loop, a cold supply loop, a heat accumulation loop (106), a heat accumulation device (109), a compression loop, a heat accumulation and heat supply loop device (115), an air storage loop and a heat release loop, wherein the heat supply loop is connected with the heat accumulation loop (106), the heat accumulation device (109) is further connected with a preheating structure (105), and the heat accumulation and heat supply loop device (115) is connected to the periphery of the heat accumulation device (109).

2. A heat accumulating type compressed air energy storage system according to claim 1, wherein the heat accumulating and supplying circulation loop is connected with a heat accumulating loop (106), the heat accumulating and supplying circulation device (115) is connected with the heat accumulating device (109), the heat accumulating and supplying circulation device (115) comprises a heat accumulating and supplying pipeline (108), a heat supplying end, a circulation structure (110) and a heating structure (112), the heat accumulating and supplying pipeline is spirally arranged outside the heat accumulating device (109), the heat supplying pipeline comprises an air inlet (104), an air outlet (118), an air inlet pipeline (101) and an air outlet pipeline (117), the air inlet (104) is connected with the heat supplying end, the air outlet (118) is connected with the circulation structure (110), the air inlet end and the air outlet end are provided with control valves (103), the heat accumulating and supplying pipeline (108) is fixedly connected with the heat accumulating tank through a fixing structure (107), the heat storage and supply pipeline (108) is externally provided with an annular heat insulation plate (116).

3. A regenerative compressed air energy storage system according to claim 2, wherein said circulation structure (110) comprises a circulation fan, a temperature sensor (114) is further provided at said heating end, said heating structure (112) comprises a heating chamber (113), and a heating element is provided in said heating chamber (113).

4. A regenerative compressed air energy storage system according to claim 2, wherein there are inward bends (111) between the heat supply end and the circulation structure (110) and between the outlet duct (117) and the circulation structure (110).

5. A regenerative compressed air energy storage system according to claim 3, wherein a filter structure (102) is provided at the inlet end, the filter structure (102) being sealingly connected to the inlet duct (101).

6. A regenerative compressed air energy storage system according to claim 4, characterized in that the preheating arrangement (105) comprises a preheating tank with heating elements arranged inside.

7. A regenerative compressed air energy storage system according to claim 4, characterised in that said bends (111) are arranged as a curved pipe structure.

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