CN210241908U

CN210241908U - Gas heat exchanger

Info

Publication number: CN210241908U
Application number: CN201921015373.0U
Authority: CN
Inventors: Yunshan Song; 宋云山; Zhongmin Wang; 王仲民; Libin Li; 李立彬; Jingang Cui; 崔金钢; Yukun Zhu; 朱玉坤; Xinghui Gao; 高兴辉; Bin Liu; 刘斌; Lidong Qi; 齐立东
Original assignee: Beijing Shougang Co Ltd
Current assignee: Beijing Shougang Co Ltd
Priority date: 2019-07-02
Filing date: 2019-07-02
Publication date: 2020-04-03
Anticipated expiration: 2029-07-02

Abstract

The utility model discloses a gas heat exchanger, including heat exchange box, the entry box, the export box, low temperature medium access cover, low temperature medium export lid, the tubulation, header and drainage device under the low temperature medium, drainage device includes water catch bowl, drain pipe and sluicing valve, the water catch bowl is fixed to be set up on the bottom plate of heat exchange box, the drain pipe is linked together with the water catch bowl, the sluicing valve sets up on the pipeline of drain pipe, when operating personnel can use the high pressure water to wash the scaling in the heat exchange box, the waste water that the high pressure water washed can directly flow to the bottom plate of heat exchange box, and gather in the water catch bowl, when opening the sluicing valve, the waste water that has washed can in time be discharged through the drain pipe, the waste water can's unable erosion pulverization to the refractory material of heat exchange box that causes, when closing the sluicing valve, can carry out the heat transfer of waste gas, can not take, has good practicability.

Description

Gas heat exchanger

Technical Field

The utility model relates to a heat exchange equipment technical field, in particular to gas heat exchanger.

Background

In recent years, with the development of waste heat recovery devices, tube type, low temperature heat pipe type and plate type gas heat exchangers have been developed to recover waste heat of high temperature media such as waste gas generated in industrial production, and the tube type, low temperature heat pipe type and plate type gas heat exchangers are coated with refractory materials inside the high temperature side pipes and the shell, so as to play roles of heat insulation and shell protection. However, in the heat exchange process, the tubes and the plates gradually suffer from the phenomenon of scale deposition, and the preheating effect of the gas heat exchanger is affected along with the increase of the scale deposition, generally, an operator can wash the scale deposition in the heat exchange box body with high-pressure water, but the waste water washed with the high-pressure water directly flows to the lower parts of the pipeline and the shell, accumulates at the lower parts of the pipeline and the shell, and erodes and pulverizes refractory materials of the pipeline and the shell.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the prior art is not enough to be overcome, a coal gas heat exchanger of waste water that can in time discharge pipe and the casing internal accumulation is provided.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an embodiment of the utility model provides a gas heat exchanger, header and drainage device under heat transfer box, entry box, export box, low temperature medium access cover, low temperature medium export lid, tubulation, low temperature medium, wherein:

the heat exchange box body is horizontally and transversely arranged, the inlet box body is communicated with one end of the heat exchange box body, the outlet box body is communicated with the other end of the heat exchange box body, which is opposite to the inlet box body, and waste gas flows from the inlet box body to the outlet box body;

the low-temperature medium outlet cover and the low-temperature medium inlet cover are fixedly arranged on the upper part of the heat exchange box body in sequence along the flowing direction of waste gas, and the low-temperature medium lower header is fixedly arranged on the lower part of the heat exchange box body;

a first group of tubes and a second group of tubes are horizontally and transversely arranged in the heat exchange box body at intervals, two ends of the first group of tubes are respectively communicated with the low-temperature medium inlet cover and the low-temperature medium lower header, and two ends of the second group of tubes are respectively communicated with the low-temperature medium outlet cover and the low-temperature medium lower header;

the water drainage device comprises a water collection tank, a water drainage pipe and a water drainage valve, wherein the water collection tank is fixedly arranged on a bottom plate of the heat exchange box body, the water drainage pipe is communicated with the water collection tank, and the water drainage valve is arranged on a pipeline of the water drainage pipe.

Optionally, a third group of tubes and a fourth group of tubes are further arranged between the first group of tubes and the second group of tubes, two ends of the third group of tubes are respectively communicated with the low-temperature medium inlet cover and the low-temperature medium lower header, and two ends of the fourth group of tubes are respectively communicated with the low-temperature medium outlet cover and the low-temperature medium lower header.

Optionally, the gas heat exchanger further comprises a plate, and the plate is fixedly arranged on the inner wall of the heat exchange box body.

Optionally, a plate is arranged between each two adjacent groups of tubes.

Optionally, the open ends of every two adjacent plates are respectively arranged at the two opposite ends.

Optionally, the tubes are bent to form an "N" shaped conduit.

Optionally, the cross section of the tube array is circular or polygonal.

Optionally, a sealing ring is arranged between the low-temperature medium inlet cover, the low-temperature medium outlet cover and the low-temperature medium lower header and the gas heat exchanger.

Optionally, the number of the water discharging devices is two, and the two water discharging devices are respectively arranged at the communication position of the inlet box body and the heat exchange box body and the communication position of the outlet box body and the heat exchange box body.

Optionally, the inlet box body and the outlet box body both comprise a columnar box body and a table-shaped box body, one end of the table-shaped box body with a small caliber is connected with the columnar box body, and one end of the table-shaped box body with a large caliber is connected with the heat exchange box body.

The utility model provides a gas heat exchanger, because drainage device includes the water catch bowl, drain pipe and sluicing valve, the water catch bowl is fixed to be set up on the bottom plate of heat transfer box, the drain pipe is linked together with the water catch bowl, the sluicing valve sets up on the pipeline of drain pipe, when operating personnel can wash the inside scaling of heat transfer box with the high pressure water, the waste water that the high pressure water washed can directly flow to the bottom plate of heat transfer box on, and gather in the water catch bowl, when opening the sluicing valve, the waste water that has washed can in time discharge through the drain pipe, waste water can't cause the etching to the refractory material of heat transfer box, when closing the sluicing valve, the pulverization carries out the heat transfer of waste gas, can not take place revealing of waste gas, and the device is good in practicability.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic cross-sectional view of a gas heat exchanger according to the present invention;

fig. 2 is a schematic structural view of the drainage device of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example one

Fig. 1 is the utility model discloses a gas heat exchanger's sectional structure schematic diagram, as shown in fig. 1, this embodiment provides a gas heat exchanger, including the heat transfer box, entry box 1, export box 4, low temperature medium access cover 3, low temperature medium export lid 2, tubulation 5, header 6 and drainage device 8 under the low temperature medium, heat transfer box level transversal arrangement, entry box 1 intercommunication sets up the one end at the heat transfer box, export box 4 intercommunication sets up at the heat transfer box other end relative with entry box 1, waste gas flows to export box 4 from entry box 1, and low temperature medium export lid 2 and low temperature medium access cover 3 are along the waste gas flow direction fixed upper portion that sets up at the heat transfer box in proper order, the fixed lower part that sets up at the heat transfer box of header 6 under the low temperature medium. High temperature waste gas lets in from entry box 1, flows out from export box 4 after the heat transfer box, and low temperature medium then gets into from low temperature medium access cover 3, flows through under the low temperature medium from low temperature medium export cover 2 outflow behind header 6, and the direction that low temperature medium and high temperature waste gas flow is different to realize countercurrent flow.

It is worth noting that a first group of tubes 5 and a second group of tubes 5 are arranged in the heat exchange box body at intervals along the horizontal direction, two ends of the first group of tubes 5 are respectively communicated with the low-temperature medium inlet cover 3 and the low-temperature medium lower header 6, and two ends of the second group of tubes 5 are respectively communicated with the low-temperature medium outlet cover 2 and the low-temperature medium lower header 6. That is, during the flowing process of the low-temperature medium, the components through which the low-temperature medium flows are the low-temperature medium inlet cover 3, the first group of tubes 5, the low-temperature medium lower header 6, the second group of tubes 5 and the low-temperature medium outlet cover 2 in sequence.

Fig. 2 is the structure schematic diagram of the drainage device of the utility model, as shown in fig. 2, the drainage device 8 includes water collecting tank 9, drain pipe 10 and drain valve 11, the water collecting tank 9 is fixed to be set up on the bottom plate of the heat exchange box body, the drain pipe 10 is linked together with the water collecting tank 9, the drain valve 11 is set up on the pipeline of the drain pipe 10. When operating personnel can wash the inside scaling of heat transfer box with the water under high pressure, the waste water that the high pressure water washed can directly flow to the bottom plate of heat transfer box on, and gather in water catch bowl 9, when opening drain valve 11, the waste water that has washed can in time be discharged through drain pipe 10, waste water can't cause the etching pulverization to the refractory material of heat transfer box, when closing drain valve 11, can carry out the heat transfer of waste gas, can not take place revealing of waste gas, and the device has good practicality

Example two

As another embodiment of the present invention, different from the previous embodiment, a third group of tubes 5 and a fourth group of tubes 5 are further provided between the first group of tubes 5 and the second group of tubes 5 of the present embodiment, both ends of the third group of tubes 5 are respectively communicated with the low temperature medium inlet cover 3 and the low temperature medium lower header 6, and both ends of the fourth group of tubes 5 are respectively communicated with the low temperature medium outlet cover 2 and the low temperature medium lower header 6. By providing a plurality of tubes 5, the flow distance of the low-temperature medium can be extended, thereby making the heat exchange more sufficient.

Further, the gas heat exchanger also comprises a plate 12, the plate 12 is fixedly arranged on the inner wall of the heat exchange box body, and one plate 12 is arranged between every two groups of adjacent tubes 5. In this embodiment, there are a total of three plates 12 located between the first and third sets of tubes 5, between the third and fourth sets of

tubes

5, 5 and between the fourth and second sets of

tubes

5, 5. And the open ends of every two adjacent plates 12 are respectively arranged at the opposite ends. For example, the open end of the plate 12 between the first and third sets of

tubes

5 and 5 faces downward, and the open end of the plate 12 between the third and fourth sets of

tubes

5 and 5 adjacent thereto faces upward, and the plate 12 can prevent the high-temperature exhaust gas from directly passing through, so that the high-temperature exhaust gas must go along the plate 12 to pass through the open end of the plate 12, which is equivalent to increasing the flow distance of the high-temperature exhaust gas, and the heat exchange between the high-temperature exhaust gas and the low-temperature medium is more thorough.

Further, the tube array 5 is bent to form an N-shaped pipeline, and the section of the tube array 5 is circular or polygonal.

Further, sealing rings are arranged between the low-temperature medium inlet cover 3, the low-temperature medium outlet cover 2 and the low-temperature medium lower header 6 and the gas heat exchanger. The sealing ring can prevent the leakage of waste gas.

Furthermore, two drainage devices 8 are arranged, the two drainage devices 8 are respectively arranged at the communication position of the inlet box body 1 and the heat exchange box body and the communication position of the outlet box body 4 and the heat exchange box body, accumulated water in the gas heat exchanger can be discharged from two sides respectively, the drainage speed is accelerated, and the risk that the refractory material of the heat exchange box body is pulverized by erosion is reduced. And, when necessary, can advance water spray in the pipeline of a drainage device 8, go out water from the pipeline of another drainage device 8, raise the efficiency of washing.

Further, the inlet box body 1 and the outlet box body 4 both comprise a columnar box body and a table-shaped box body, one end of the table-shaped box body with a small caliber is connected with the columnar box body, and one end of the table-shaped box body with a large caliber is connected with the heat exchange box body. Because of different calibers, an inclined plane is formed from a small caliber to a large caliber, which is convenient for water to flow to the water collecting tank 9 of the drainage device 8.

The embodiment of this specification provides a gas heat exchanger, because drainage device includes the water catch bowl, drain pipe and sluicing valve, the water catch bowl is fixed to be set up on the bottom plate of heat transfer box, the drain pipe is linked together with the water catch bowl, the sluicing valve sets up on the pipeline of drain pipe, when operating personnel can wash the interior scaling of heat transfer box with high pressure water, the waste water that the high pressure water washed can directly flow to the bottom plate of heat transfer box on, and gather in the water catch bowl, when opening the sluicing valve, the waste water that has washed can in time be discharged through the drain pipe, waste water can't cause the etching to the refractory material of heat transfer box, when closing the sluicing valve, can carry out the heat transfer of waste gas, can not take place revealing of waste gas, and the gas heat exchanger has good practicality.

The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. It should be noted that, for those skilled in the art, without departing from the principle of the present application, several improvements and modifications can be made, and these improvements and modifications should also be construed as the protection scope of the present application.

Claims

1. The utility model provides a coal gas heat exchanger, its characterized in that, header (6) and drainage device (8) under heat transfer box, entry box (1), export box (4), low temperature medium access cover (3), low temperature medium export lid (2), tubulation (5), the low temperature medium, wherein:

the heat exchange box body is horizontally and transversely arranged, the inlet box body (1) is communicated and arranged at one end of the heat exchange box body, the outlet box body (4) is communicated and arranged at the other end of the heat exchange box body, which is opposite to the inlet box body (1), and waste gas flows to the outlet box body (4) from the inlet box body (1);

the low-temperature medium outlet cover (2) and the low-temperature medium inlet cover (3) are sequentially and fixedly arranged on the upper part of the heat exchange box body along the flowing direction of waste gas, and the low-temperature medium lower header (6) is fixedly arranged on the lower part of the heat exchange box body;

a first group of the tubes (5) and a second group of the tubes (5) are horizontally and transversely arranged in the heat exchange box body at intervals, two ends of the first group of the tubes (5) are respectively communicated with the low-temperature medium inlet cover (3) and the low-temperature medium lower header (6), and two ends of the second group of the tubes (5) are respectively communicated with the low-temperature medium outlet cover (2) and the low-temperature medium lower header (6);

the water drainage device (8) comprises a water collection tank (9), a water drainage pipe (10) and a water drainage valve (11), wherein the water collection tank (9) is fixedly arranged on a bottom plate of the heat exchange box body, the water drainage pipe (10) is communicated with the water collection tank (9), and the water drainage valve (11) is arranged on a pipeline of the water drainage pipe (10).

2. The gas-gas heat exchanger according to claim 1, characterized in that a third group of said tubes (5) and a fourth group of said tubes (5) are further arranged between said first group of said tubes (5) and said second group of said tubes (5), both ends of said third group of said tubes (5) are respectively communicated with said low-temperature medium inlet cover (3) and said low-temperature medium header (6), and both ends of said fourth group of said tubes (5) are respectively communicated with said low-temperature medium outlet cover (2) and said low-temperature medium header (6).

3. The gas heat exchanger according to claim 2, further comprising plates (12), wherein the plates (12) are fixedly arranged on the inner wall of the heat exchange box body.

4. Gas and heat exchanger according to claim 3, wherein one sheet (12) is arranged between each two adjacent sets of tubes (5).

5. The gas heat exchanger according to claim 4, characterized in that the open ends of each two adjacent plates (12) are arranged at opposite ends, respectively.

6. The gas heat exchanger according to any of claims 1 to 5, wherein the tubes (5) are bent to form an "N" shaped conduit.

7. Gas heat exchanger according to any of claims 1-5, wherein the tubes (5) are circular or polygonal in cross-section.

8. The gas heat exchanger according to any one of claims 1 to 5, wherein sealing rings are arranged between the low-temperature medium inlet cover (3), the low-temperature medium outlet cover (2) and the low-temperature medium lower header (6) and the gas heat exchanger.

9. The gas-gas heat exchanger according to any one of claims 1 to 5, characterized in that there are two of said water discharge devices (8), two of said water discharge devices (8) being provided at the connection of said inlet box (1) to said heat exchange box and at the connection of said outlet box (4) to said heat exchange box, respectively.

10. The gas heat exchanger according to claim 9, characterized in that the inlet box (1) and the outlet box (4) each comprise a cylindrical box and a table-shaped box, the small-caliber end of the table-shaped box is connected with the cylindrical box, and the large-caliber end of the table-shaped box is connected with the heat exchange box.