CN217636926U

CN217636926U - Turbulent anti-dust-deposition axial heat transfer device

Info

Publication number: CN217636926U
Application number: CN202220693915.5U
Authority: CN
Inventors: 原传海
Original assignee: Zhuhai Huayuan Automation Technology Co ltd
Current assignee: Zhuhai Huayuan Automation Technology Co ltd
Priority date: 2022-03-29
Filing date: 2022-03-29
Publication date: 2022-10-21
Anticipated expiration: 2032-03-29

Abstract

The utility model relates to an anti deposition axial heat transfer device of vortex, including heat exchange tube (1), hot-fluid passage (2) and cold fluid passage (3) to opposite direction, the heat absorption end of heat exchange tube (1) is arranged in respectively with the end of giving out heat the hot-fluid passage cold fluid passage (2) and cold fluid passage (3) in, heat exchange tube (1) has evaporation medium in tube (1.1) and the tube, heat exchange tube (1) is equipped with thorn form arch (1.2) on the surface tube (1.1) of heat absorption end, thorn form arch (1.2) only install and arrange the heat-receiving fluid face of heat absorption end in tube (1.1) and the heat-receiving fluid face of the back of the body is the bare tube. The utility model discloses have that the heat transfer is stable, long service life and beneficial effect that heat exchange efficiency is high.

Description

Turbulent anti-dust-deposition axial heat transfer device

Technical Field

The utility model relates to a heat transfer and waste heat recovery technical field especially relate to an axial heat transfer device, specifically indicate an anti deposition axial heat transfer device of vortex.

Background

The metal heat exchange coil is a common heat exchange and transfer device, the metal heat exchange coil is inserted into hot fluid to absorb heat and transferred into cold fluid through a medium, when the hot fluid flows through the surface of a heat exchange tube, a layer of the hot fluid tightly attached to the surface of the heat exchange tube is blocked, and the flow rate is reduced to zero. The layer of hot fluid with the flow rate of zero affects the flow of the upper layer of hot fluid through viscosity action, so that the flow rate of the upper layer of hot fluid is reduced. Such a layer affects one layer, and this thin layer of thermal fluid is called a boundary layer. The boundary layer can influence the heat transfer of the hot fluid to the heat exchange tube, so that the heat transfer coefficient of the heat exchanger is reduced.

In order to improve the heat transfer coefficient of the surface of the heat exchange tube, the heat transfer coefficient is generally improved by adding spiral fins or H-shaped fins on the surface of the heat exchange tube in the prior art, however, the surfaces of the fins are easy to be stained with dust and deposited dust, and after the heat exchange device is used for a long time, the hot fluid channel is easy to be blocked and the heat exchange efficiency is easy to be reduced, so that a heat transfer device which can damage a boundary layer to improve the heat exchange efficiency and can avoid the dust deposition on the surface is needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to prior art's not enough, provide one kind and can destroy the boundary layer and improve heat exchange efficiency and the anti deposition axial heat transfer device of vortex of the surface deposition that can significantly reduce again.

The utility model discloses a through following technical scheme realization, provide an anti deposition axial heat transfer device of vortex, including heat exchange tube, the hot-fluid passageway and the cold fluid passageway that flow to opposite direction, the heat absorption end and the end of giving out heat of heat exchange tube are arranged in respectively hot-fluid passageway cold-fluid passageway and cold fluid passageway in, the heat exchange tube has evaporating medium in tube and the tube, the heat exchange tube is equipped with thorn form arch on the surface tube of heat absorption end, thorn form arch only install in tube (1.1) arrange in that the heat absorption end meet hot fluid face and be the fluorescent tube to the hot-fluid face dorsad.

After the scheme above the adoption, the utility model discloses in arrange hot-fluid passage and cold fluid passage respectively with the heat exchange tube both ends, the one end that is located cold fluid passage is exothermic end, the one end that is located hot-fluid passage is endothermic end, the endothermic end of heat pipe is located the hot-fluid, including boiler afterbody flue gas, hot water, metallurgical industry sintering heat tail gas etc, the heat absorption end of heat pipe absorbs the heat of hot-fluid with the inside evaporation medium of evaporation heat transfer pipe, after the medium evaporates, it is located the exothermic end of cold fluid passage to transmit the heat pipe, the heat pipe is cooled down by the cold flow body of pipe outer wall in cold fluid passage, the inside medium steam of vacuum pipe meets cold cooling, condense into liquid, flow back to the vacuum tube bottom that is located the hot-fluid passage, carry out the heat absorption again and evaporate, the transmission heat, so circulate to reciprocate, install in the thorn form arch that the heat absorption end meets hot-fluid face, can absorb the heat and transmit to the heat pipe wall through thorn form arch, and heat the inside evaporation medium of heating pipe, the thorn form arch of installation can effectively expand the surface, improve heat exchange efficiency, simultaneously, the thorn form arch can effectively destroy the attached surface layer, because the heat transfer efficiency is strengthened to the many grey distribution. In practical application, the back hot fluid surface of the heat pipe is easy to deposit ash and be stained with ash due to the eddy effect, and the heat transfer efficiency is not high.

Preferably, the spine-shaped protrusion is conical, pyramidal, prismatic or cylindrical.

Preferably, the radial distribution angle of the thorn-shaped bulges along the heat exchange tube facing to the heat fluid surface is less than or equal to 180 degrees or more than 180 degrees and less than 360 degrees.

Preferably, the thorn-shaped bulges and the surface of the tube shell are welded one by one or made into a belt-shaped structure and then integrally welded on the surface of the tube shell.

Preferably, the thorn-shaped protrusions are mounted on the surface of the package by one of contact welding, filler wire welding and autogenous welding.

Preferably, the heat exchange pipe is also provided with a thorn-shaped projection at a heat radiating end.

Preferably, the heat exchange tube is placed in one of a vertical placement mode, a horizontal placement mode and an inclined placement mode.

To sum up, the utility model discloses a tube meeting at the heat absorption end sets up thorn form arch and sets up to not having the bellied fluorescent tube structure of thorn form at the back of the body fluid face at the hot fluid face, has effectively destroyed the boundary layer on heat pipe surface for heat exchange tube surface deposition significantly reduces, has the heat transfer stable, long service life and the high beneficial effect of heat exchange efficiency.

Drawings

FIG. 1 is a schematic structural view of a turbulent anti-ash-deposition axial heat transfer device of the present invention;

fig. 2 is a schematic structural view of the arrangement position of the thorn-shaped protrusions on the cross section of the heat absorbing end facing the hot fluid surface of the heat exchange tube of the present invention;

shown in the figure:

1. the heat exchange tube 2, the hot fluid channel 3, the cold fluid channel 1.1, the tube shell 1.2 and the thorn-shaped bulge.

Detailed Description

In order to clearly illustrate the technical features of the present invention, the present invention is further illustrated by the following embodiments in combination with the accompanying drawings.

As shown in fig. 1 and 2, a turbulent anti-ash deposition axial heat transfer device is provided, which comprises a heat exchange tube 1, a hot fluid channel 2 and a cold fluid channel 3, wherein the flow directions of the hot fluid channel 2 and the cold fluid channel 3 are opposite, a heat absorption end and a heat release end of the heat exchange tube 1 are respectively arranged in the hot fluid channel 2 and the cold fluid channel 3, the heat exchange tube 1 is provided with a tube shell 1.1, an evaporation medium is arranged in the tube shell, a surface tube shell 1.1 of the heat absorption end of the heat exchange tube 1 is provided with a thorn-shaped bulge 1.2, and the thorn-shaped bulge 1.2 is only arranged on the tube shell (1.1) which is arranged at the heat absorption end and faces the hot fluid and faces away from the hot fluid and is a light tube shell.

In the embodiment, the thorn-shaped bulges 1.2 are conical, the radial distribution angle of the thorn-shaped bulges 1.2 along the heat exchange tube heat-facing fluid surface is less than or equal to 180 degrees, the surfaces of the thorn-shaped bulges 1.2 and the tube shell 1.2 are welded on the surface of the tube shell 1.2 one by one, the thorn-shaped bulges 1.2 are installed on the surface of the tube shell 1.1 by contact welding, the heat exchange tube 1 is also provided with the thorn-shaped bulges 1.2 at the heat release end, and the heat exchange tube 1 adopts a vertically-arranged installation mode.

Finally, it should be further noted that the above examples and illustrations are not limited to the above embodiments, and technical features of the present invention that are not described in the present application can be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and it should be understood by those skilled in the art that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should not depart from the spirit of the present invention, and shall also belong to the protection scope of the claims of the present invention.

Claims

1. The utility model provides a vortex anti-deposition axial heat transfer device, includes heat exchange tube (1), hot-fluid passage (2) and cold fluid passage (3) that flow direction is opposite, the heat absorption end and the end of giving out heat of heat exchange tube (1) are arranged in respectively hot-fluid passage (2) and cold fluid passage (3), heat exchange tube (1) have tube (1.1) and have evaporation medium in the tube, its characterized in that, heat exchange tube (1) is equipped with thorn form arch (1.2) on the surface tube (1.1) of heat absorption end, thorn form arch (1.2) only install in tube (1.1) arrange the heat-fluid face of heat absorption end in and the hot-fluid face of meeting back to the heat-fluid face is the light pipe tube.

2. A flow-disturbing ash-deposition-resisting axial heat transfer device according to claim 1, characterized in that the burred protrusions (1.2) are conical, pyramidal, prismatic or cylindrical.

3. A flow-disturbing ash-deposition-resisting axial heat-transfer device as claimed in claim 1, wherein the radial distribution angle of the thorn-shaped protrusions (1.2) along the heat-exchange tube heat-facing fluid surface is less than or equal to 180 ° or more than 180 ° and less than 360 °.

4. A flow-disturbing ash-deposition-resisting axial heat-transfer device as claimed in claim 1, wherein the said thorn-shaped protrusions (1.2) and the surface of the pipe shell (1.2) are welded one by one or made into a band-shaped structure and then welded integrally on the surface of the pipe shell (1.2).

5. A turbulent anti-soot axial heat transfer device according to claim 1, wherein said burred protrusion (1.2) is mounted on the surface of the shell (1.1) by one of contact welding, filler wire welding or self-welding.

6. A flow-disturbing ash-deposition-resisting axial heat transfer device according to claim 1, characterized in that the heat exchange tube (1) is also provided with a thorn-shaped protrusion (1.2) at the heat release end.

7. A flow-disturbing ash-deposition-resisting axial heat-transfer device according to claim 1, characterized in that the heat-exchange tube (1) is placed in one of a vertical placement, a horizontal placement or an inclined placement.