Gas heat exchange components

Abstract

This utility model relates to a gas heat exchange component, belonging to the field of gas heat exchange technology. The component includes an insulated box and a heat exchange module. The heat exchange module includes an inner pipe through which heating exhaust gas passes and an outer pipe through which cooling fresh air passes. The outer pipe is sleeved around the inner pipe, and the inner and outer pipes are separated to form a closed cavity. The closed cavity is connected to the outside through fresh air ducts fixed at both ends of the outer pipe. Corresponding sides of the insulated box are provided as connecting surfaces. The inner pipe is horizontally installed inside the insulated box, and its two ends are exposed outside the insulated box through first through holes provided on the two connecting surfaces. The fresh air ducts at both ends of the outer pipe are exposed outside the insulated box through second through holes provided on the two connecting surfaces. This utility model can be used to assemble segmented gas heat exchangers, which is beneficial to improving the convenience of packaging, storage, transportation and cleaning of gas heat exchangers.

Description

Technical Field

[0001] This utility model belongs to the field of gas heat exchange technology, and specifically relates to a gas heat exchange component. Background Technology

[0002] Traditional gas heat exchangers all adopt an integral structure, which is large in size after assembly and cannot be disassembled into sections, making them unsuitable for packaging, storage and transportation. In addition, integral gas heat exchangers also have common industry problems such as the easy formation of oil, wax and dust blockage in the hot exhaust gas pipe, which is difficult to clean and easy to ignite. Utility Model Content

[0003] The present invention aims to provide a heat exchange component that can be assembled into a segmented gas heat exchanger that is easy to disassemble, thereby eliminating the aforementioned shortcomings of traditional integral heat gas exchangers.

[0004] The technical solution adopted in this utility model is as follows:

[0005] The gas heat exchange assembly includes an insulated box and a heat exchange module. The heat exchange module adopts a dual-channel design, which includes an inner pipe through which heating exhaust gas passes and an outer pipe through which cooling fresh air passes. The outer pipe is sleeved around the inner pipe, and both ends of the outer pipe are fixedly equipped with end caps. Both ends of the inner pipe protrude from the outer pipe through the central through hole provided on the end cap at the same end. The end caps at both ends of the inner pipe and the outer pipe are sealed and connected, thereby forming a closed cavity between the inner pipe and the outer pipe. The closed cavity is connected to the outside through fresh air ducts fixed at both ends of the outer pipe.

[0006] The corresponding two sides of the heat insulation box are set as connection surfaces. The inner tube is horizontally installed inside the heat insulation box and its two ends are exposed outside the heat insulation box along the first through holes set on the two connection surfaces respectively. The fresh air ducts at both ends of the outer tube are exposed outside the heat insulation box along the second through holes set on the two connection surfaces respectively.

[0007] This invention can be used to splice multiple units to form a segmented gas heat exchanger, thereby improving the convenience of packaging, storage, transportation and cleaning of the gas heat exchanger. Attached Figure Description

[0008] Figure 1 This is an external view of the overall air structure of this utility model;

[0009] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0010] Figure 3 This is a schematic diagram of the superconducting heat pipe installation structure of this utility model;

[0011] Figure 4 This is a schematic diagram of the overall structure of the gas heat exchanger constructed using this invention;

[0012] Figure 5 This is an exploded view of the overall structure of the gas heat exchanger constructed using this invention. Detailed Implementation

[0013] To better understand this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments.

[0014] like Figure 1-2 The gas heat exchange assembly shown includes an insulated box 1 and a heat exchange module. The heat exchange module adopts a dual-channel design, comprising an inner pipe 2 for passing through heated exhaust gas and an outer pipe 3 for passing through through cooled fresh air. Both the inner pipe 2 and the outer pipe 3 are metal round pipes. The outer pipe 3 is fitted around the inner pipe 2, and both ends of the outer pipe 3 are fixedly equipped with end caps 3.1. Both ends of the inner pipe 2 protrude from the outer pipe 3 through the central through holes provided on the end caps 3.1. The end caps 3.1 at both ends of the inner pipe 2 and the outer pipe 3 are sealed together, thereby... A closed cavity 4 is formed between the inner pipe 2 and the outer pipe 3 to prevent leakage of hot exhaust gas or short circuit of heat. The closed cavity 4 is connected to the outside through fresh air ducts 5 fixed at both ends of the outer pipe 3. The heat insulation box 1 is a rectangular box with its two short sides as connecting surfaces. The inner pipe 2 is horizontally installed inside the heat insulation box 1, and its two ends protrude outside the heat insulation box 1 through the first through holes corresponding to the two connecting surfaces. The fresh air ducts 5 at both ends of the outer pipe 3 protrude outside the heat insulation box 1 through the second through holes corresponding to the two connecting surfaces. The heat insulation box 1 encloses the outer pipe 3, which can reduce the heat loss of the inner pipe 2 and the outer pipe 3, and at the same time protect the internal structure from external environmental interference.

[0015] like Figures 2 to 4 As shown, spiral guide vanes extending to both ends can be spirally arranged on the outer circumferential wall of the inner tube, and the outer edge of the spiral guide vanes can be tightly abutted against the inner wall of the outer tube 3 to form a fresh air spiral flow channel in the closed cavity 4. The two ends of the fresh air spiral flow channel are respectively connected to the fresh air ducts 5 at both ends of the outer tube 3. During operation, hot exhaust gas can flow axially in the inner tube 2, and cold fresh air can flow around the inner tube 2 along the spiral flow channel, which can prolong the heat exchange time between hot exhaust gas and cold fresh air, and make the heat exchange between hot exhaust gas and cold fresh air more complete.

[0016] like Figure 2 and 3 As shown, to further accelerate the heat exchange between the hot exhaust gas in the inner pipe 2 and the cold fresh air in the closed cavity 4, several heat superconducting pipes 6 are arranged on the wall of the inner pipe 2. Figure 4As shown, the superconducting heat pipe 6 is a vacuum tube filled with a superconducting heat medium. One end of the superconducting heat pipe 6 is designated as an absorption section 6.1, the other end as a heat dissipation section 6.2, and a spacer ring 6.3 is provided on the outer wall in the middle. The outer wall of the heat dissipation section 6.2 is axially provided with several heat dissipation fins 6.21 to increase the heat dissipation area. The superconducting heat pipe 6 is inserted and fixed into the insertion hole provided in the wall of the inner tube 2, so that the absorption section 6.1 is exposed inside the inner tube 2 and the heat dissipation section 6.2 is exposed inside the closed cavity 4. In use, the absorption section 6.1 can be used to absorb the heat of the hot exhaust gas flowing through the inner tube 2 and transfer it to the heat dissipation section 6.2. The heat dissipation section 6.2 can be used to heat the cold fresh air flowing through the closed cavity 4. The superconducting heat medium can be used to accelerate the heat transfer speed from the absorption section 6.1 to the heat dissipation section 6.2, and the spiral heat dissipation fins 6.21 can be used to accelerate the heat dissipation speed of the heat dissipation section 6.2.

[0017] like Figure 3 As shown, the end of the heat dissipation section 6.2 is provided with a port for injecting a thermal superconducting medium into the superconducting heat pipe 6, and the port is sealed with a cap 7. The thermal superconducting medium can be one of a gaseous heat transfer medium, a liquid heat transfer medium, and a vapor-liquid mixed heat transfer medium, preferably a vapor-liquid mixed heat transfer medium, to achieve rapid and uniform heat transfer.

[0018] like Figure 1 and 2 As shown, for ease of splicing, both ends of the inner pipe 2 are fixed with a first flange 2.1; the inner end of the fresh air duct 5 is inserted into the pipe hole provided in the pipe wall of the outer pipe 3, the pipe body is inserted into the pipe sleeve provided on the outer edge of the end cover 3.1 on the same side, and the outer end protrudes outside the connection surface on the same side of the heat insulation box 1.

[0019] like Figure 4 and 5 As shown, in use, the three gas heat exchange components mentioned above can be spliced ​​into a three-section gas heat exchanger. The specific splicing method is as follows: the three gas heat exchange components are arranged in a straight line, and the heat insulation boxes 1 of adjacent gas heat exchange components are connected to each other through a rectangular frame 8 to fix all gas heat exchange components into one unit. The inner tubes 2 of adjacent gas heat exchange components are connected to each other through the first flange 2.1 at the corresponding end to connect all inner tubes 2 into a hot exhaust gas pipeline. The fresh air ducts 5 of adjacent gas heat exchange components are connected to each other through a connecting pipe 11 to connect all closed cavities 4 into a cold fresh air channel.

[0020] like Figure 4 and 5As shown, the hot exhaust gas passage is provided with a hot exhaust gas inlet hood 9 and a hot exhaust gas outlet hood 10 at both ends. The fresh air ducts 5 located at both ends of the cold fresh air passage are used as cold fresh air inlet pipes 5' and 5' respectively. The cold fresh air inlet pipe 5' is located at the same end of the hot exhaust gas outlet hood 10, and the cold fresh air outlet pipe 5' is located at the same end of the hot exhaust gas inlet hood 9, so that the hot exhaust gas and cold fresh air flow in opposite directions, forming a cross heat exchange path. This is beneficial to accelerate the heat exchange speed.

Claims

1. A gas heat exchange assembly, characterised in that: The heat exchange module includes an insulation box (1) and a heat exchange module. The heat exchange module adopts a dual-channel design, which includes an inner pipe (2) through which heating exhaust gas passes and an outer pipe (3) through which cooling fresh air passes. The outer pipe (3) is sleeved around the inner pipe (2). Both ends of the outer pipe (3) are fixedly provided with end caps (3.1). Both ends of the inner pipe (2) are exposed outside the outer pipe (3) along the central through hole provided on the end cap (3.1) at the same end. The end caps (3.1) at both ends of the inner pipe (2) and the outer pipe (3) are sealed and connected, thereby forming a closed cavity (4) between the inner pipe (2) and the outer pipe (3). The closed cavity (4) is connected to the outside through the fresh air duct (5) fixed at both ends of the outer pipe (3). The corresponding sides of the heat insulation box (1) are set as connecting surfaces. The inner tube (2) is horizontally installed inside the heat insulation box (1) and its two ends are exposed outside the heat insulation box (1) along the first through holes set on the two connecting surfaces respectively. The fresh air ducts (5) at both ends of the outer tube (3) are exposed outside the heat insulation box (1) along the second through holes set on the two connecting surfaces respectively.

2. The gas heat exchange assembly of claim 1, wherein: The heat insulation box (1) is a rectangular box with its two short sides as connecting surfaces.

3. The gas heat exchange assembly according to claim 2, characterized in that: The inner tube (2) is horizontally installed inside the heat insulation box (1), and its two ends are exposed outside the heat insulation box (1) along the first through holes set on the two connecting surfaces respectively.

4. The gas heat exchange assembly according to claim 3, characterized in that: Both ends of the inner tube (2) are fixed with a first flange (2.1).

5. The gas heat exchange assembly according to any one of claims 1 to 4, characterized in that: Both the inner tube (2) and the outer tube (3) are metal round tubes.

6. The gas heat exchange assembly according to claim 5, characterized in that: The outer tube (3) is wrapped inside the heat insulation box (1).

7. The gas heat exchange assembly according to claim 1 or 6, characterized in that: The inner end of the fresh air duct (5) is inserted and fixed in the pipe hole provided in the wall of the outer pipe (3), the pipe is inserted into the sleeve provided on the outer edge of the end cap (3.1) on the same side, and the outer end protrudes outside the connection surface on the same side of the heat insulation box (1).

8. The gas heat exchange assembly according to claim 1, characterized in that: The outer circumferential wall of the inner tube (2) is provided with spiral guide vanes extending to both ends. The outer edge of the spiral guide vane is in close contact with the inner wall of the outer tube (3) to form a fresh air spiral flow channel in the closed cavity (4). The two ends of the fresh air spiral flow channel are respectively connected to the fresh air ducts (5) at both ends of the outer tube (3).

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