CN216049329U - Gas-gas heat exchanger - Google Patents

Abstract

The utility model discloses a gas-gas heat exchanger, which comprises a pipe body and a heat exchange plate, wherein the heat exchange plate is arranged inside the pipe body, the heat exchange plate divides the inner space of the pipe body into a cold gas area and a hot gas area, one end of the pipe body is provided with a cold gas inlet and a hot gas outlet, the other end of the pipe body is provided with a hot gas inlet and a cold gas outlet, the cold gas inlet and the cold gas outlet are communicated with the cold gas area, and the hot gas inlet and the hot gas outlet are communicated with the hot gas area. The tubular heat exchanger is suitable for a small-flow gas-gas heat exchange scene, and cold and hot air flows flow in opposite directions on two sides of the heat exchange plate, so that the heat exchange efficiency of the cold and hot air flows with high temperature difference can be improved, the heat exchange is accelerated, and the damage caused by overlarge local thermal stress of the heat exchanger is prevented. The utility model relates to the technical field of heat exchangers.

Description

Gas-gas heat exchanger

Technical Field

The utility model relates to a gas-gas heat exchanger in the technical field of heat exchangers.

Background

At present, shell-and-tube heat exchangers are commonly used to regulate the gas temperature. The heat exchanger is generally in a tubular structure, gases with different temperatures flow inside and outside the tube, and heat conduction is carried out through the tube wall, so that heat exchange between the inside and outside gases is realized. However, when the temperature difference between the gas inside and outside the tube is large and the gas flow is small, the size of the heat exchanger needs to be correspondingly reduced, the heat exchange tube can bear large thermal stress, most of the thermal stress cannot be completely eliminated or reduced even if a compensation device such as a flexible component expansion joint is adopted, and the heat exchanger can be damaged over time.

SUMMERY OF THE UTILITY MODEL

The utility model aims to at least solve one of the technical problems in the prior art, and provides a gas-gas heat exchanger which can be used in a gas-gas heat exchange scene with small flow and high temperature difference.

According to the embodiment of the utility model, the gas-gas heat exchanger comprises a pipe body and a heat exchange plate, wherein the heat exchange plate is arranged inside the pipe body, the heat exchange plate divides the inner space of the pipe body into a cold gas area and a hot gas area, one end of the pipe body is provided with a cold gas inlet and a hot gas outlet, the other end of the pipe body is provided with a hot gas inlet and a cold gas outlet, the cold gas inlet and the cold gas outlet are communicated with the cold gas area, and the hot gas inlet and the hot gas outlet are communicated with the hot gas area.

According to the embodiment of the utility model, further, the cold air inlet, the hot air outlet, the hot air inlet and the cold air outlet are provided with connecting flanges.

According to the embodiment of the utility model, the pipe diameters of the cold air inlet and the hot air inlet are increased along the airflow direction, and the pipe diameters of the hot air outlet and the cold air outlet are decreased along the airflow direction.

According to the embodiment of the present invention, further, the number of the heat exchange plates is at least two, and the heat exchange plates divide the inner space of the pipe body into at least two cold air zones and at least two hot air zones.

According to the embodiment of the present invention, further, the cold air areas are both communicated with the cold air inlet and the cold air outlet, and the hot air areas are both communicated with the hot air inlet and the hot air outlet.

According to an embodiment of the present invention, further, the cold gas zones and the hot gas zones are alternately distributed.

According to the embodiment of the utility model, further, the gas-gas heat exchanger further comprises a plurality of distance columns, and two ends of each distance column are respectively connected to two adjacent heat exchange plates.

According to the embodiment of the utility model, further, the distance posts are detachably connected with the heat exchange plate.

According to the embodiment of the utility model, further, the gas-gas heat exchanger further comprises a plurality of spoilers, the spoilers are installed in the cold gas area and the hot gas area, and the spoilers are used for increasing the flow distance of the gas flow.

According to an embodiment of the present invention, further, the spoiler is disposed perpendicular to an axis of the pipe body.

The utility model has the beneficial effects that: the tubular heat exchanger is suitable for a small-flow gas-gas heat exchange scene, and cold and hot air flows flow in opposite directions on two sides of the heat exchange plate, so that the heat exchange efficiency of the cold and hot air flows with high temperature difference can be improved, the heat exchange is accelerated, and the damage caused by overlarge local thermal stress of the heat exchanger is prevented.

Drawings

In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the utility model, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.

FIG. 1 is a front view of an embodiment of the present invention;

fig. 2 is a three-dimensional view of an embodiment of the present invention.

Detailed Description

Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

Referring to fig. 1 to 2, the gas-gas heat exchanger according to the embodiment of the present invention includes a tube body 1 and a heat exchange plate 2, wherein an inner space is provided in the tube body 1, and the heat exchange plate 2 is installed in the tube body 1 and divides the inner space of the tube body 1 into a cold gas area and a hot gas area. One end of the pipe body 1 is provided with a cold air inlet 11 and a hot air outlet 12, the other end of the pipe body 1 is provided with a hot air inlet 13 and a cold air outlet 14, the cold air inlet 11 and the cold air outlet 14 are communicated with a cold air area, and the hot air inlet 13 and the hot air outlet 12 are communicated with a hot air area. When gas-gas heat exchange is carried out, cold gas passes through the cold gas inlet 11, the cold gas area and the cold gas outlet 14 in sequence, hot gas passes through the hot gas inlet 13, the hot gas area and the hot gas outlet 12 in sequence, cold gas and hot gas are not in contact with each other, and heat exchange is carried out through the heat exchange plate 2 between the cold gas and the hot gas; and because the air current flow direction of air conditioning and steam is opposite, body 1 length is longer, and air conditioning and steam have longer heat exchange time, promote heat exchange efficiency.

Furthermore, the cold air inlet 11, the hot air outlet 12, the hot air inlet 13 and the cold air outlet 14 are provided with connecting flanges, so that the cold air inlet and the hot air outlet can be conveniently connected with a cold air pipeline and a hot air pipeline.

Further, the pipe diameters of the cold air inlet 11 and the hot air inlet 13 are increased along the airflow direction, and the pipe diameters of the hot air outlet 12 and the cold air outlet 14 are decreased along the airflow direction, so that the contact area between the cold and hot air and the heat exchange plate 2 is enlarged, the cold and hot air is gathered to the corresponding outlet after heat exchange is completed, and the pipe diameters of the cold and hot pipelines can be reduced.

Further, the number of heat exchange plates 2 is at least two, and heat exchange plates 2 divide the inner space of pipe body 1 into at least two cold air areas and at least two hot air areas, and the contact area of cold air, hot air and heat exchange plates 2 is increased by increasing the number of cold air areas and hot air areas.

Furthermore, the cold air area is communicated with the cold air inlet 11 and the cold air outlet 14, and the hot air area is communicated with the hot air inlet 13 and the hot air outlet 12, so that gas pollution caused by direct mixing of cold air and hot air is prevented.

Further, cold air district and hot gas district are distributed in turn, further increase the area of contact of air conditioning, steam and heat transfer board to promote heat exchange efficiency.

Further, this gas-gas heat exchanger still includes a plurality of distance posts 3, and the both ends of distance post 3 are connected to two adjacent heat transfer boards 2 respectively, play fixed heat transfer board 2, keep the effect of 2 intervals of heat transfer board. Moreover, the distance pillars 3 also function to disturb the gas flow, reduce the flow velocity of the gas flow and thereby increase the heat exchange time.

Further, the distance column 3 and the heat exchange plate 2 can be detachably connected, and can adopt connection modes such as threaded connection and other connection modes capable of achieving the same connection effect, and the details are not repeated herein. The distance posts 3 are more easily detached from the heat exchange plate 2 by adopting a detachable connection mode, so that later-period maintenance is facilitated; moreover, the distance posts 3 can be set to different lengths and specifications, and users can replace the distance posts 3 with different lengths and specifications according to actual needs, so that the distance between the heat exchange plates 2 is changed, and the applicability of the utility model is improved.

Further, the gas-gas heat exchanger further comprises a plurality of spoilers 4, the spoilers 4 are installed in the cold air area and the hot air area, and specifically, the spoilers 4 are connected with at least one of the heat exchange plates 2 and the pipe body 1. The spoiler 4 is not parallel to the flow direction of the air flow for guiding the air flow to change the flow direction. The air current flows along the Z shape under the blocking of the spoiler 4, the turbulence degree of the air current is enhanced, the flowing distance of the air current is lengthened, and the heat exchange efficiency is further improved.

Further, the spoiler 4 is perpendicular to the axis of the pipe body 1, so that the air flow can be disturbed to the maximum extent, and the air flow is not blocked at the spoiler 4.

While the preferred embodiments of the present invention have been illustrated and described, it will be understood by those skilled in the art that the present invention is not limited to the details of the embodiments shown and described, but is capable of numerous equivalents and substitutions without departing from the spirit of the utility model as set forth in the claims appended hereto.

Claims (10)

1. A gas-to-gas heat exchanger, comprising: body (1) and heat transfer board (2), heat transfer board (2) install in inside body (1), heat transfer board (2) will body (1) inner space partition is cold gas district and hot gas district, the one end of body (1) is equipped with air conditioning import (11) and hot gas outlet (12), the other end of body (1) is equipped with hot gas import (13) and air conditioning export (14), air conditioning import (11) air conditioning export (14) with cold gas district intercommunication, hot gas import (13) hot gas outlet (12) with hot gas district intercommunication.

2. A gas-gas heat exchanger according to claim 1, wherein: the cold air inlet (11), the hot gas outlet (12), the hot gas inlet (13) and the cold air outlet (14) are both provided with connecting flanges.

3. A gas-gas heat exchanger according to claim 1, wherein: air conditioning inlet (11) with the pipe diameter of hot gas import (13) all increases along airflow direction, hot gas export (12) with the pipe diameter of air conditioning export (14) all reduces along airflow direction.

4. A gas-gas heat exchanger according to claim 1, wherein: the number of the heat exchange plates (2) is at least two, and the heat exchange plates (2) divide the inner space of the tube body (1) into at least two cold air areas and at least two hot air areas.

5. A gas-gas heat exchanger according to claim 4, wherein: the cold air district all with cold air import (11) cold air export (14) intercommunication, the hot gas district all with hot gas import (13) hot gas export (12) intercommunication.

6. A gas-gas heat exchanger according to claim 5, wherein: the cold gas areas and the hot gas areas are alternately distributed.

7. A gas-gas heat exchanger according to claim 4, wherein: the gas-gas heat exchanger further comprises a plurality of distance columns (3), and two ends of each distance column (3) are connected to two adjacent heat exchange plates (2) respectively.

8. A gas-gas heat exchanger according to claim 7, wherein: the distance posts (3) are detachably connected with the heat exchange plate (2).

9. A gas-gas heat exchanger according to any one of claims 1 to 8, characterized in that: the gas-gas heat exchanger further comprises a plurality of spoilers (4), the spoilers (4) are installed in the cold gas area and the hot gas area, and the spoilers (4) are used for increasing the flowing distance of gas flow.

10. A gas-gas heat exchanger according to claim 9, wherein: the spoiler (4) is perpendicular to the axis of the pipe body (1).

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