High-pressure compressed air energy storage and heat exchange device

Abstract

The utility model relates to the field of compressed air energy storage, and particularly discloses a high-pressure compressed air energy storage heat exchange device which comprises an inlet pipe box and an outlet pipe box and further comprises a plurality of compressed air communicating pipes, one ends of the compressed air communicating pipes are communicated with the inlet pipe box, and the other ends of the compressed air communicating pipes are communicated with the outlet pipe box. A heating medium water heat exchange pipe is arranged in the compressed air communicating pipe, one end of the heating medium water heat exchange pipe communicates with the first communicating hole, and the other end of the heating medium water heat exchange pipe communicates with the second communicating hole. More than two straight fins are arranged between the compressed air communicating pipe and the heating medium water heat exchange pipe; and the straight fins equally divide the pipeline space between the compressed air communicating pipe and the heating medium water heat exchange pipe along the circumferential direction of the heating medium water heat exchange pipe. The heat exchanger is used for improving the heat exchange efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to compressed air energy storage field, concretely relates to a high pressure compressed air energy storage heat exchange device. BACKGROUND

[0002] Compressed air energy storage refers to using electric energy to compress air in the valley period of power grid load, and releasing compressed air to drive steam turbine to generate electricity in the peak period of power grid load. As an important form of large-scale energy storage in the future, compressed air energy storage technology is not limited by region, and its installed capacity can be large or small.

[0003] In the existing heat exchanger for storing and releasing heat, the heat exchanger for high-pressure compressed air after multi-stage compression or the first two stages of expansion mostly adopts a hairpin heat exchanger. The hairpin heat exchanger has the advantages of small diameter, high pressure resistance, high flow rate, and less fouling. However, the air side heat transfer efficiency is not high, and the heat transfer area per unit volume is small, resulting in a large volume of the heat exchanger. UTILITY MODEL CONTENT

[0004] The utility model discloses a high pressure compressed air energy storage heat exchange device for increasing heat exchange efficiency.

[0005] To solve the above technical problems, the utility model adopts the technical scheme that:

[0006] The utility model relates to a kind of high-pressure compressed air energy storage heat exchange device, including inlet pipe box and outlet pipe box, compressed air inlet is provided on inlet pipe box, compressed air outlet is provided on outlet pipe box;Further including the first heat medium water water collecting pipe in inlet pipe box, and the second heat medium water water collecting pipe in outlet pipe box, the first heat medium water water collecting pipe one end opening one end is closed, the opening end of the first heat medium water water collecting pipe is connected with heat medium water inlet pipe, one end of heat medium water inlet pipe is worn out inlet pipe box, the pipe body of the first heat medium water water collecting pipe is provided with multiple first communication holes;Second heat medium water water collecting pipe one end opening one end is closed, the opening end of the second heat medium water water collecting pipe is connected with heat medium water outlet pipe, one end of heat medium water outlet pipe is worn out outlet pipe box, the pipe body of the second heat medium water water collecting pipe is provided with multiple second communication holes;Further including multiple compressed air communication pipes, one end of compressed air communication pipe is connected with inlet pipe box, and the other end is connected with outlet pipe box;Heat medium water heat exchange pipe is provided in compressed air communication pipe, one end of heat medium water heat exchange pipe is connected with first communication hole, and the other end is connected with second communication hole;Two or more straight fins are installed between compressed air communication pipe and heat medium water heat exchange pipe, and straight fin is divided into pipe space between compressed air communication pipe and heat medium water heat exchange pipe along the circumference of heat medium water heat exchange pipe.

[0007] Further, six straight fins are installed between the compressed air communication pipe and the heat medium water heat exchange pipe.

[0008] Further, multiple first heat medium water water collecting pipes are provided, and the multiple first heat medium water water collecting pipes are arranged in layers and fill the entire cross section of the inlet pipe box.

[0009] Further, the inlet pipe box and the outlet pipe box are each provided with an access door.

[0010] Further, a pipe support plate is installed between the inlet pipe box and the outlet pipe box, and all the compressed air communication pipes pass through and are fixed on the pipe support plate.

[0011] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0012] The straight fins divide the pipe space between the compressed air communication pipe and the heat medium water heat exchange pipe along the circumference of the heat medium water heat exchange pipe, and the straight fins have strong heat conduction capacity, which increases the contact area between the heat medium water heat exchange pipe and the compressed air, improves the heat exchange area per unit volume, and increases the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a front view cross-sectional view of the utility model.

[0014] Figure 2The utility model discloses a top view section view.

[0015] Figure 3 For Figure 1 A-A section view of the utility model.

[0016] Figure 4 For Figure 1 B-B section view of the utility model.

[0017] The interpretation of each mark in the drawing is as follows: 1-compressed air inlet, 2-inlet pipe box, 3-inspection door, 4-compressed air communication pipe, 5-inlet end pipe plate, 6-pipe support plate, 7-outlet end pipe plate, 8-outlet pipe box, 9-compressed air outlet, 10-heat medium water outlet pipe, 11-second heat medium water collecting pipe, 12-heat medium water heat exchange pipe, 13-first heat medium water collecting pipe, 14-heat medium water inlet pipe, 15-straight fin. DETAILED DESCRIPTION

[0018] The technical scheme in the embodiments of the utility model will be described clearly and completely in connection with the drawings in the embodiments of the utility model, so that the conception of the utility model, the solved technical problem, the technical features constituting the technical scheme and the brought technical effects can be further understood.

[0019] As Figure 1 , Figure 2 , Figure 3As shown, a high-pressure compressed air energy storage heat exchange device, comprising an inlet pipe box 2 and an outlet pipe box 8, the inlet pipe box 2 is provided with a compressed air inlet 1, the outlet pipe box 8 is provided with a compressed air outlet 9, one side of the inlet pipe box 2 is installed with an inlet end pipe plate 5, one side of the outlet pipe box 8 is installed with an outlet end pipe plate 7; further comprising a first heat medium water collecting pipe 13 located in the inlet pipe box 2, and a second heat medium water collecting pipe 11 located in the outlet pipe box 8, one end of the first heat medium water collecting pipe 13 is open and the other end is closed, the open end of the first heat medium water collecting pipe 13 is communicated with the heat medium water inlet pipe 14, one end of the heat medium water inlet pipe 14 penetrates out of the inlet pipe box 2, a plurality of first communication holes are arranged on the pipe body of the first heat medium water collecting pipe 13; one end of the second heat medium water collecting pipe 11 is open and the other end is closed, the open end of the second heat medium water collecting pipe 11 is communicated with the heat medium water outlet pipe 10, one end of the heat medium water outlet pipe 10 penetrates out of the outlet pipe box 8, a plurality of second communication holes are arranged on the pipe body of the second heat medium water collecting pipe 11; further comprising a plurality of compressed air communication pipes 4, one end of the compressed air communication pipe 4 penetrates through the inlet end pipe plate 5 and communicates with the inlet pipe box 2, the other end penetrates through the outlet end pipe plate 7 and communicates with the outlet pipe box 8; the compressed air communication pipe 4 is provided with a heat medium water heat exchange pipe 12, one end of the heat medium water heat exchange pipe 12 is communicated with the first communication hole, the other end is communicated with the second communication hole. Two or more straight fins 15 are installed between the compressed air communication pipe 4 and the heat medium water heat exchange pipe 12, the straight fins 15 equally divide the pipe space between the compressed air communication pipe 4 and the heat medium water heat exchange pipe 12 along the circumference of the heat medium water heat exchange pipe 12.

[0020] The heat exchange efficiency of the currently used hairpin heat exchanger is not high, mainly due to the insufficient heat exchange area of the heat exchange pipe and the shell space in the hairpin heat exchanger, plus the low air heat transfer efficiency. The improvement point of the utility model lies in: increasing the heat exchange area in the indirect contact process of compressed air and heat medium water. In the utility model, the heat exchange process of compressed air and heat medium water mainly occurs in the process that the heat medium water passes through the heat medium water heat exchange pipe 12 and the compressed air passes through the compressed air communication pipe 4, and since two or more straight fins 15 are connected between the compressed air communication pipe 4 and the heat medium water heat exchange pipe 12, the straight fins 15 equally divide the pipe space between the compressed air communication pipe 4 and the heat medium water heat exchange pipe 12 along the circumference of the heat medium water heat exchange pipe 12, the straight fins 15 have strong heat conduction capacity, so that the contact area of the heat medium water and the compressed air respectively on the inside and outside of the heat medium water heat exchange pipe 12 is increased, the heat exchange area per unit volume is improved, and the heat exchange efficiency is increased. The overall structure of the utility model is also superior to that of the hairpin heat exchanger, the end of the hairpin heat exchanger needs to be communicated through a U-shaped bend pipe, the compressed air communication pipe 4 and the heat medium water heat exchange pipe 12 of the utility model are straight pipes, and the two ends are respectively communicated into the inlet pipe box 2 and the outlet pipe box 8, so that the expansion stress is eliminated, thereby increasing the service life and reducing the difficulty of processing and installation.

[0021] AsFigure 4 Further, six straight fins 15 are installed between the compressed air communication pipe 4 and the heat medium water heat exchange pipe 12, for increasing the heat exchange area.

[0022] Further, the first heat medium water collecting pipe 13 is provided with multiple first heat medium water collecting pipes 13 which are arranged in layers and fill the entire cross section of the inlet pipe box 2; the second heat medium water collecting pipe 11 is provided with multiple second heat medium water collecting pipes 11 which are arranged in layers and fill the entire cross section of the outlet pipe box 8. After the inlet pipe box 2 and the outlet pipe box 8 are filled by the multiple first heat medium water collecting pipes 13 and the multiple second heat medium water collecting pipes 11 respectively, and then connected by the multiple compressed air communication pipes 4 and the multiple heat medium water heat exchange pipes 12, the space of the inlet pipe box 2 and the outlet pipe box 8 can be fully utilized, and the passing amount of the heat medium water and the compressed air can be increased.

[0023] Further, the inlet pipe box 2 and the outlet pipe box 8 are both provided with maintenance doors 3, for facilitating the maintenance of the inside of the inlet pipe box 2 and the outlet pipe box 8.

[0024] Further, a pipe support plate 6 is installed between the inlet pipe box 2 and the outlet pipe box 8, and all the compressed air communication pipes 4 pass through and are fixed on the pipe support plate 6, and the pipe support plate 6 is arranged between the inlet pipe box 2 and the outlet pipe box 8, for connecting the middle parts of the compressed air communication pipes 4 and increasing the strength. In the description of the utility model, the terms of "connecting", "fixing" can be fixed connection, processing, welding, or mechanical connection, and the specific meaning of the above terms in the utility model should be understood.

[0025] In the description of the utility model, the terms of "center", "upper", "lower", "horizontal", "inner", "outer" and the like only indicate the position relationship for facilitating the description of the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a specific position, so it cannot be understood as the limitation of the utility model.

[0026] Finally, it should be pointed out that: the above embodiments are only used for describing the technical scheme of the utility model, and not for limiting it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that; it can still modify the technical scheme described in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the embodiments of the utility model.

Claims

1. A high-pressure compressed air energy storage heat exchange device, characterized by: The inlet pipe box (2) is provided with a compressed air inlet (1), and the outlet pipe box (8) is provided with a compressed air outlet (9); The first heat medium water collecting pipe (13) is arranged in the inlet pipe box (2), and the second heat medium water collecting pipe (11) is arranged in the outlet pipe box (8); one end of the first heat medium water collecting pipe (13) is open, and the other end is closed; the open end of the first heat medium water collecting pipe (13) is communicated with the heat medium water inlet pipe (14), one end of the heat medium water inlet pipe (14) penetrates out of the inlet pipe box (2), and a plurality of first communication holes are arranged on the pipe body of the first heat medium water collecting pipe (13); The second heat medium water collecting pipe (11) is arranged in the outlet pipe box (8); one end of the second heat medium water collecting pipe (11) is open, and the other end is closed; the open end of the second heat medium water collecting pipe (11) is communicated with the heat medium water outlet pipe (10), one end of the heat medium water outlet pipe (10) penetrates out of the outlet pipe box (8), and a plurality of second communication holes are arranged on the pipe body of the second heat medium water collecting pipe (11); A plurality of compressed air communication pipes (4) are arranged, one end of the compressed air communication pipe (4) is communicated with the inlet pipe box (2), and the other end is communicated with the outlet pipe box (8); The heat medium water heat exchange pipe (12) is arranged in the compressed air communication pipe (4), one end of the heat medium water heat exchange pipe (12) is communicated with the first communication hole, and the other end is communicated with the second communication hole; Two or more straight fins (15) are arranged between the compressed air communication pipe (4) and the heat medium water heat exchange pipe (12), and the straight fins (15) equally divide the pipe space between the compressed air communication pipe (4) and the heat medium water heat exchange pipe (12) along the circumference of the heat medium water heat exchange pipe (12).

2. The high-pressure compressed air energy storage heat exchange device of claim 1, wherein: Six straight fins (15) are arranged between the compressed air communication pipe (4) and the heat medium water heat exchange pipe (12).

3. The high-pressure compressed air energy storage heat exchange device of claim 1, wherein: A plurality of first heat medium water collecting pipes (13) are arranged, and the plurality of first heat medium water collecting pipes (13) are arranged in layers and fill the entire cross section of the inlet pipe box (2); A plurality of second heat medium water collecting pipes (11) are arranged, and the plurality of second heat medium water collecting pipes (11) are arranged in layers and fill the entire cross section of the outlet pipe box (8).

4. The high-pressure compressed air energy storage heat exchange device of claim 1, wherein: The inlet pipe box (2) and the outlet pipe box (8) are both provided with an access door (3).

5. The high-pressure compressed air energy storage heat exchange device of claim 1, wherein: The pipe support plate (6) is arranged between the inlet pipe box (2) and the outlet pipe box (8), and all the compressed air communication pipes (4) penetrate through the pipe support plate (6) and are fixed on the pipe support plate (6).

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