CN219045915U

CN219045915U - Waste heat recovery assembly for rectangular orthogonal flow cooling tower

Info

Publication number: CN219045915U
Application number: CN202221471770.0U
Authority: CN
Inventors: 矫贵科; 徐兴龙; 李景春
Original assignee: Bakhepu Industry Dalian Co ltd
Current assignee: Bakhepu Industry Dalian Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2023-05-19
Anticipated expiration: 2032-06-14

Abstract

The utility model discloses a waste heat recovery assembly for a rectangular AC cooling tower, which relates to the field of cooling tower waste heat recovery and comprises a tower body, a cooling box fixedly arranged in the middle of the inner part of the tower body, and a heat exchange device fixedly arranged in the cooling box, wherein the heat exchange device comprises a heat insulation pipe fixedly arranged in the middle of the inner part of the cooling box, a radiating pipe fixedly arranged in the middle of the inner part of the heat insulation pipe, a first water inlet pipe for water inflow in the radiating pipe, a first water outlet pipe for water outflow of the radiating pipe, a second water inlet pipe for water inflow to a gap between the inner wall of the heat insulation pipe and the outer wall of the radiating pipe, and a second water outlet pipe for water outflow to a gap between the inner wall of the heat insulation pipe and the outer wall of the radiating pipe. According to the utility model, heat exchange occurs between the hot flow and the cold flow through the pipe wall of the radiating pipe, the temperature of the cold flow encountered during the hot flow is lower and lower, and the temperature of the hot flow encountered during the cold flow is higher and higher, so that the hot flow and the cold flow can fully perform heat exchange, and the waste heat recovery utilization rate is higher.

Description

Waste heat recovery assembly for rectangular orthogonal flow cooling tower

Technical Field

The utility model relates to the field of waste heat recovery of cooling towers, in particular to a waste heat recovery component for a rectangular orthogonal flow cooling tower.

Background

A cooling tower is a device that uses cold flow as a circulating coolant to absorb heat from a hot flow from a system to reduce the temperature of the hot flow.

In the waste heat recovery of a cooling tower, a radiator is often used for heat exchange between a hot flow and a cold flow, and in the heat exchange process, the cold flow absorbs heat of the hot flow insufficiently, so that more heat is dissipated.

Therefore, the existing waste heat recovery assembly of the cooling tower has the problem that the heat absorption of cold flow to hot flow is insufficient, and therefore, we propose a rectangular orthogonal flow waste heat recovery assembly for the cooling tower.

Disclosure of Invention

The utility model mainly aims to provide a waste heat recovery assembly for a rectangular alternating current cooling tower, which can effectively solve the problem that the heat absorption of cold flow to hot flow is insufficient in the waste heat recovery assembly of the existing cooling tower, which is proposed in the background art.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: a waste heat recovery assembly for a rectangular orthogonal flow cooling tower comprises a tower body, a cooling box fixedly arranged in the middle of the interior of the tower body, and a heat exchange device fixedly arranged in the cooling box;

the heat exchange device comprises a heat insulation pipe fixedly arranged in the middle of the inside of the cooling box, a heat radiation pipe fixedly arranged in the middle of the inside of the heat insulation pipe, a first water inlet pipe for water inlet of the inside of the heat radiation pipe, a first water outlet pipe for water outlet of the heat radiation pipe, a second water inlet pipe for water inlet of a gap between the inner wall of the heat insulation pipe and the outer wall of the heat radiation pipe, and a second water outlet pipe for water outlet of a gap between the inner wall of the heat insulation pipe and the outer wall of the heat radiation pipe. The heat flow to be cooled is introduced into the water inlet end of the first water inlet pipe, the cold flow is introduced into the second water inlet pipe, heat exchange occurs between the heat flow and the cold flow through the pipe wall of the radiating pipe, the heat flow flows from the first water inlet pipe to the first water outlet pipe from the whole middle of the radiating pipe to the whole edge of the radiating pipe, the cold flow flows from the second water inlet pipe to the second water outlet pipe from the whole edge of the heat insulating pipe to the whole middle of the heat insulating pipe, the temperature is continuously transferred to different cold flows when the heat flows, the heat temperature is lower and lower, and the temperature of the encountered cold flow is lower and lower, and is a process with lower temperature; in contrast, in the process of cold flow inflow, the temperature of the hot flow encountered by the cold flow is higher and higher, and the process is a process of continuously increasing the temperature. When the heat insulating pipe and the radiating pipe are long enough, the cold flow temperature is more and more close to the initial temperature of the heat flow and even reaches the initial temperature of the heat flow. Therefore, the heat exchange can be fully carried out by the design, so that the heat of the heat flow is effectively recycled, and the waste heat recycling rate is higher. The cold flow can be used for heating a user after being heated. This design can reduce the heat simultaneously and scatter and disappear, and the temperature at the inside center of cooler bin is high, and the heat that scatters and disappears to inside edge is along with the absorption reintroduction cooler bin inside center of being convenient for cold water to be discharged from the second outlet pipe and utilized, has further improved waste heat recovery utilization ratio.

Preferably, the cross sections of the heat insulation pipe and the radiating pipe are flat, and the distances of gaps between the inner wall of the heat insulation pipe and the outer wall of the radiating pipe are equal everywhere. The heat exchange area of the heat and cold flow is conveniently increased, the heat exchange efficiency is improved, and the heat exchange is uniform.

Preferably, the heat exchanging device further comprises a plurality of heat conducting blocks, one sides of the heat conducting blocks are fixedly connected with the outer wall of the radiating pipe, the other sides of the heat conducting blocks are fixedly connected with the inner wall of the heat insulating pipe, and the plurality of heat conducting blocks are uniformly distributed at intervals in the gap between the heat insulating pipe and the radiating pipe. The heat dissipation area is further increased, and the heat is conducted out.

Preferably, one end of the second water inlet pipe far away from the heat insulation pipe is provided with a water pump and is fixedly connected with the water outlet end of the water pump. And cold flow is convenient to enter.

Preferably, the heat conducting block is of a plate-shaped structure.

Preferably, the cooling box is of a cylindrical structure. Is convenient for adapting to the structures of the heat insulation pipe and the radiating pipe.

Compared with the prior art, the utility model has the following beneficial effects:

1. in the utility model, heat exchange occurs between the heat flow and the cold flow through the pipe wall of the radiating pipe, the process that the heat flow flows from the first water inlet pipe to the first water outlet pipe is the process that the heat flow flows from the whole middle of the radiating pipe to the whole edge of the radiating pipe, the process that the cold flow flows from the second water inlet pipe to the second water outlet pipe is the process that the heat insulation pipe flows from the whole edge of the heat insulation pipe to the whole middle of the heat insulation pipe, the temperature is continuously transferred to different cold flows when the heat flow flows, the heat temperature is lower and lower, and the encountered temperature of the cold flow is lower and lower, and the process that the temperature is lower and is continuously reduced; in contrast, in the process of cold flow inflow, the temperature of the hot flow encountered by the cold flow is higher and higher, and the process is a process of continuously increasing the temperature. When the heat insulating pipe and the radiating pipe are long enough, the cold flow temperature is more and more close to the initial temperature of the heat flow and even reaches the initial temperature of the heat flow. Therefore, the heat exchange can be fully carried out by the design, so that the heat of the heat flow is effectively recycled, and the waste heat recycling rate is higher. The cold flow can be used for heating a user after being heated.

2. In the utility model, the temperature of the inner center of the cooling box is high, and the heat dissipated to the inner edge is reintroduced into the inner center of the cooling box along with the absorption of cold water, and is discharged from the second water outlet pipe for use, so that the waste heat recovery utilization rate is further improved, and the heat dissipation can be reduced.

Drawings

FIG. 1 is a perspective cross-sectional view of the upper structure of a cooling tank of a waste heat recovery assembly for a rectangular AC cooling tower according to the present utility model;

FIG. 2 is an enlarged view of the configuration of FIG. 1A of a waste heat recovery assembly for a rectangular AC-AC cooling tower according to the present utility model;

FIG. 3 is a perspective view of the heat insulating tube and the radiating tube of the waste heat recovery assembly for the rectangular AC cooling tower;

FIG. 4 is an enlarged view of the configuration of FIG. 3B of a waste heat recovery assembly for a rectangular AC-AC cooling tower according to the present utility model;

fig. 5 is a perspective cross-sectional view of the internal structure of the waste heat recovery assembly for a rectangular ac-ac cooling tower according to the present utility model.

In the figure: 1. a tower body; 2. a cooling box; 3. a heat insulating pipe; 4. a heat radiating pipe; 5. a first water inlet pipe; 6. a first water outlet pipe; 7. a second water inlet pipe; 8. a second water outlet pipe; 9. a heat conduction block; 10. a water pump; 11. and a heat insulation block.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be configured and operated in the specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Referring to fig. 1-5, the utility model discloses a waste heat recovery assembly for a rectangular ac cooling tower, which comprises a tower body 1, a cooling box 2 fixedly arranged in the middle of the interior of the tower body 1, and a heat exchange device fixedly arranged in the cooling box 2;

the heat exchange device comprises a heat insulation pipe 3 fixedly arranged in the middle of the inside of a cooling box 2, a radiating pipe 4 fixedly arranged in the middle of the inside of the heat insulation pipe 3, a first water inlet pipe 5 for water inlet of the inside of the radiating pipe 4, a first water outlet pipe 6 for water outlet of the radiating pipe 4, a second water inlet pipe 7 for water inlet to a gap between the inner wall of the heat insulation pipe 3 and the outer wall of the radiating pipe 4, and a second water outlet pipe 8 for water outlet of a gap between the inner wall of the heat insulation pipe 3 and the outer wall of the radiating pipe 4, wherein the heat insulation pipe 3 and the radiating pipe 4 are in a volute shape, the first water inlet pipe 5 and the second water outlet pipe 8 are arranged at one end of the whole formed by the heat insulation pipe 3 and the radiating pipe 4 and are positioned at the middle of the whole formed by the heat insulation pipe 3 and the radiating pipe 4, the first water outlet pipe 6 and the second water inlet pipe 7 are arranged at the whole edge formed by the heat insulation pipe 3 and the radiating pipe 4, the first water inlet pipe 5, the second water outlet pipe 8, the first water outlet pipe 6 and the second water inlet pipe 7 are fixedly arranged in the box wall of the cooling box 2, and the heat insulation block 11 for heat insulation block 11 formed by the whole heat insulation block for the heat insulation pipe 3 and the whole radiating pipe 4 is fixedly arranged in the cooling box 2. The water outlet end of the first water inlet pipe 5 penetrates through the heat insulation pipe 3 and is communicated with the interior of the heat radiation pipe 4, the water inlet end of the first water inlet pipe 5 is communicated with heat flow to be cooled, a gap between the heat insulation pipe 3 and the heat radiation pipe 4 is communicated with the second water inlet pipe 7, cold flow is introduced into the interior of the second water inlet pipe 7, heat exchange occurs between the heat flow and the cold flow through the pipe wall of the heat radiation pipe 4, the process that the heat flow flows from the first water inlet pipe 5 to the first water outlet pipe 6 is a process that the heat radiation pipe 4 flows from the whole middle to the whole edge of the heat radiation pipe 4, the process that the cold flow flows from the second water inlet pipe 7 to the second water outlet pipe 8 is a process that the whole edge of the heat insulation pipe 3 flows from the whole middle to the heat insulation pipe 3, the temperature is continuously transferred to different cold flows when the heat flow, the heat temperature is lower and lower, and the temperature of the encountered cold flow is a process that the temperature is lower and the temperature is continuously lowered; in contrast, in the process of cold flow inflow, the temperature of the hot flow encountered by the cold flow is higher and higher, and the process is a process of continuously increasing the temperature. When the heat insulating pipe 3 and the radiating pipe 4 are long enough, the cold flow temperature becomes closer to the initial temperature of the hot flow and reaches even the initial temperature of the hot flow. Therefore, the heat exchange can be fully carried out by the design, so that the heat of the heat flow is effectively recycled, and the waste heat recycling rate is higher. The cold flow can be used for heating a user after being heated. This design can reduce the heat simultaneously and scatter and disappear, and the temperature at the inside center of cooling tank 2 is high, and the heat that scatters and disappear to inside edge is along with the absorption reintroduction cooling tank 2 inside center of being convenient for cold water to be utilized by being discharged from second outlet pipe 8, has further improved waste heat recovery utilization ratio. Wherein the scroll also increases the contact time of the hot and cold streams and reduces the structural footprint. Gaps exist between each circle of the heat insulation pipe 3, and the heat insulation blocks 11 are filled, and the heat insulation blocks 11 wrap the heat insulation pipe 3, so that the heat insulation capacity is improved, and heat dissipation is further avoided.

Wherein, the cross section of thermal-insulated pipe 3 and cooling tube 4 is the platykurtic, and the distance of the clearance between thermal-insulated pipe 3 inner wall and the cooling tube 4 outer wall everywhere equals. The heat exchange area of the heat and cold flow is conveniently increased, the heat exchange efficiency is improved, and the heat exchange is uniform.

The heat exchange device further comprises a plurality of heat conducting blocks 9, one side of each heat conducting block 9 is fixedly connected with the outer wall of the radiating pipe 4, the other side of each heat conducting block 9 is fixedly connected with the inner wall of the heat insulating pipe 3, and the plurality of heat conducting blocks 9 are uniformly distributed at intervals in the gap between the heat insulating pipe 3 and the radiating pipe 4. The heat dissipation area is further increased, and the heat is conducted out.

Wherein, the second inlet tube 7 is provided with water pump 10 far away from the one end of thermal-insulated pipe 3, and with the play water end fixed connection of water pump 10. And cold flow is convenient to enter.

Wherein the heat conducting block 9 has a plate-shaped structure.

Wherein the cooling box 2 has a cylindrical structure. The structure of the heat insulating pipe 3 and the heat radiating pipe 4 is convenient to adapt.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a rectangular orthogonal flow waste heat recovery subassembly for cooling tower which characterized in that: comprises a tower body (1), a cooling box (2) fixedly arranged in the middle of the interior of the tower body (1), and a heat exchange device fixedly arranged in the cooling box (2);

the heat exchange device comprises a heat insulation pipe (3) fixedly arranged in the middle of the inside of the cooling box (2), a radiating pipe (4) fixedly arranged in the middle of the inside of the heat insulation pipe (3), a first water inlet pipe (5) for water inlet of the radiating pipe (4), a first water outlet pipe (6) for water outlet of the radiating pipe (4), a second water inlet pipe (7) for water inlet to a gap between the inner wall of the heat insulation pipe (3) and the outer wall of the radiating pipe (4), a second water outlet pipe (8) for water outlet of a gap between the inner wall of the heat insulation pipe (3) and the outer wall of the radiating pipe (4), wherein the heat insulation pipe (3) and the radiating pipe (4) are in a vortex shape, the first water inlet pipe (5) and the second water outlet pipe (8) are arranged at one end of the whole formed by the heat insulation pipe (3) and the radiating pipe (4) and are positioned in the middle of the whole formed by the heat insulation pipe (3) and the radiating pipe (4), the first water outlet pipe (6) and the second water inlet pipe (7) are arranged at the other end of the whole formed by the heat insulation pipe (3) and the whole of the radiating pipe (4) and are positioned at the edge of the first water outlet pipe (7) and the second water outlet pipe (8) which is fixedly arranged at the edge of the first water outlet pipe (2) and the whole inner part (2) is arranged, the cooling box (2) is fixedly provided with a heat insulation block (11) for insulating heat of the whole formed by the heat insulation pipe (3) and the radiating pipe (4).

2. The waste heat recovery assembly for a rectangular orthogonal flow cooling tower of claim 1, wherein: the sections of the heat insulation pipe (3) and the radiating pipe (4) are flat, and the distances of gaps between the inner wall of the heat insulation pipe (3) and the outer wall of the radiating pipe (4) are equal everywhere.

3. The waste heat recovery assembly for a rectangular orthogonal flow cooling tower of claim 1, wherein: the heat exchange device further comprises a plurality of heat conducting blocks (9), one side of each heat conducting block (9) is fixedly connected with the outer wall of each radiating pipe (4), the other side of each heat conducting block (9) is fixedly connected with the inner wall of each heat insulating pipe (3), and the heat conducting blocks (9) are uniformly distributed at intervals in gaps between the heat insulating pipes (3) and the radiating pipes (4).

4. The waste heat recovery assembly for a rectangular orthogonal flow cooling tower of claim 1, wherein: one end of the second water inlet pipe (7) far away from the heat insulation pipe (3) is provided with a water pump (10) and is fixedly connected with the water outlet end of the water pump (10).

5. A waste heat recovery assembly for a rectangular cross flow cooling tower as claimed in claim 3, wherein: the heat conducting block (9) is of a plate-shaped structure.

6. The waste heat recovery assembly for a rectangular orthogonal flow cooling tower of claim 1, wherein: the cooling box (2) is of a cylindrical structure.