CN211855001U

CN211855001U - Heat pipe exchanger

Info

Publication number: CN211855001U
Application number: CN201922234822.7U
Authority: CN
Inventors: 杨建清
Original assignee: Wuxi Beixi Air Conditioning Equipment Co ltd
Current assignee: Wuxi Beixi Air Conditioning Equipment Co ltd
Priority date: 2019-12-13
Filing date: 2019-12-13
Publication date: 2020-11-03
Anticipated expiration: 2029-12-13

Abstract

The utility model provides a heat pipe exchanger, include: condensation segment, adiabatic section and the evaporation zone that connects gradually, condensation segment and evaporation zone are the finned tube, adiabatic section includes parent tube and heat insulation layer the utility model provides a heat pipe heat exchanger finned tube adopts laser welding technical production for make the evaporimeter improve coefficient of heat transfer, enlarged heat transfer area and increase heat transfer difference in temperature, under the environment of high temperature and high fever, steerable fin produces not hard up and drops, has improved the thermal efficiency greatly.

Description

Heat pipe exchanger

Technical Field

The utility model belongs to the indirect heating equipment field especially relates to a heat pipe exchanger, and it is durable to have reduction energy consumption, increasing the heat efficiency, material, is applicable to various forms, extensively is arranged in trades such as chemical industry, electric power, metallurgy, petrochemical industry, boiler, environmental protection.

Background

The heat pipe exchanger is a heat exchange element which winds a copper (steel) belt on the surface of a heat exchange pipe to form a spiral fin and utilizes the fin to exchange heat with hot fluid in the pipe, and the heat pipe exchanger is an efficient heat exchange element finned pipe which is recognized at home and abroad at present and is widely applied to the fields of heat exchange and waste heat recovery, energy conservation and emission reduction in petrochemical industry, food machinery, low-temperature refrigeration, seawater desalination, marine equipment and electric power industry.

At present, most of finned tubes produced in a winding mode in the market generate obvious folds at the root parts of fins, the fins are easy to loosen and fall off in a high-temperature or low-temperature environment, and the heat exchange coefficient is greatly reduced.

The tube replacement heat exchange process is a process of exchanging heat inside and outside the tube through the outer surfaces of the fins, so that the number of the fins on the length of the unit base tube is more, the heat exchange area is larger, and the heat exchange efficiency is higher.

The high-frequency welding technology and the automatic processing equipment are the leading parts of the current market, and the processed products are mainly made of carbon steel. The high-frequency welding is based on the electromagnetic induction principle and the skin effect, proximity effect and eddy-current heat effect of alternating current charges in conductors, so that steel at the edge of a welding seam is locally heated to a molten state, and the butt welding seam is subjected to intercrystalline bonding through the extrusion of a roller, thereby achieving the purpose of welding. Due to high temperature and high heat in the welding process, in order to prevent the deformation of the module for controlling the fin spacing, the thickness of the module is not easy to be too small, and the minimum spacing of the finned tubes processed and formed in the domestic market at present is 4mm (small-diameter finned tubes). The finned tube produced by high-frequency welding has a large weld heat affected zone, and needs an additional heat treatment process after welding, otherwise, the finned tube can affect the crystalline phase structure of metal and is not suitable for high-temperature or low-temperature environments; meanwhile, the fin pitch of the high-frequency welding finned tube is generally larger than 4mm, the fin thickness is generally larger than 0.8mm, and the minimum wall thickness of the base tube is 2mm, so that the heat exchanger formed by the finned tubes is large in size, the welding rate of the finned tubes is low, and the anti-falling tension is small.

Laser welding is one of the welding methods commonly used, laser welding utilizes electric element to produce high pressure and makes the hernia lamp send the highlight, through various lens refraction and focus and a bit and produce high temperature, make the welded metal's welding site melt back metal liquid and fuse, and cool off rapidly and reach the welded purpose, laser welding point diameter generally is 0.2 ~ 0.4mm, to the booth apart from the finned tube, how to guarantee to form closely laminating between steel band and the parent tube of fin with the accurate welding point central point of control position is the key factor of guaranteeing finned tube welding precision and welding quality.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a heat pipe exchanger has improved and has passed the thermal efficiency, realizes through following technical scheme: the condensation section, adiabatic section and the evaporation zone that connect gradually, condensation section and evaporation zone are the finned tube, the condensation section includes: the base tube I and the fins I are spirally arranged on the outer wall of the base tube I, the fins I and the base tube I are welded by laser, and the base tube I and the fins I are made of carbon steel, stainless steel, titanium materials, aluminum materials or copper materials independently; the evaporation section includes: the base tube III and the fin III are spirally arranged on the outer wall of the base tube III, the fin III and the base tube III are welded by laser, and the base tube III and the fin III are made of carbon steel, stainless steel, titanium materials, aluminum materials or copper materials independently; the heat insulation section comprises a base pipe II and a heat insulation layer, wherein two ends of the base pipe II of the heat insulation section are welded with the base pipe I of the condensation section and the base pipe III of the evaporation section by laser

Preferably, I even or inhomogeneous setting of fin is on I outer wall of parent tube, and adjacent fin I's interval is 2.2 ~ 4.8 mm.

Preferably, the fins III are uniformly or non-uniformly arranged on the outer wall of the base tube III, and the distance between every two adjacent fins III is 2.2-4.8 mm.

The utility model has the advantages that: the utility model provides a heat pipe exchanger finned tube adopts laser welding technique production for make the evaporimeter improve coefficient of heat transfer, enlarged heat transfer area and increase heat transfer difference in temperature, under the environment of high temperature and high fever, steerable fin produces not hard up and drops, has improved greatly and has passed the thermal efficiency.

Drawings

FIG. 1 is a schematic structural diagram of the present patent application;

in the figure, 1, a condensation section 1.1, base pipes I and 1.2 and fins I;

2. 2.1 parts of heat insulation section, 2.2 parts of base pipe II and 2.2 parts of heat insulation layer;

3. evaporation section, 3.1, parent tube III, 3.2, fin III.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Shown in fig. 1, comprising: the device comprises a condensation section, an adiabatic section and an evaporation section which are sequentially connected, wherein the condensation section and the evaporation section are finned tubes, and the adiabatic section comprises a base tube II and an adiabatic layer.

Preferably, the condensation section comprises: parent tube I and fin I, fin I is the heliciform setting on I outer wall of parent tube.

Preferably, I even or inhomogeneous the setting of fin is on I outer wall of parent tube, and the interval of adjacent fin I is 2.2 ~ 4.8mm, adjusts different intervals and different distribution situation according to actual technology or user demand. For example, to under some operating modes, fin I can set up to I middle part fin equidistant distribution of parent tube, and I interval of I both ends fin of parent tube suitably increases, and whole finned tube is not equidistant setting.

Preferably, through laser welding between fin I and the parent tube I, laser welding shaping's welding influence district is minimum, and the welding seam shaping is pleasing to the eye, intensity is high, and I root of fin does not have the fold, under high temperature or low temperature environment, the phenomenon that I is loose and drop with parent tube I all can not appear in the fin, and the finned tube that consequently obtains can compromise the advantage of little interval, high-altitude.

Preferentially, carbon steel, stainless steel, titanium material, aluminum product or copper product are independently selected separately to the material of parent tube I and fin I, and the material of parent tube I and fin I can be the same also can be inequality, can select or make up according to actual practical environment, according to the material characteristic of difference, the utility model discloses a multiple harsh practical environment such as high temperature, low temperature, high corrosion, high abrasion can extensively be applicable to the finned tube.

Preferably, the evaporation section comprises: base tube III and fin III, fin III is the heliciform setting on III outer walls of base tube.

Preferably, the fins III are uniformly or non-uniformly arranged on the outer wall of the base tube III, the distance between adjacent fins III is 2.2-4.8 mm, generally, for the finned tube, the smaller the distance between the fins III is, the more the number of fins III is in the unit length of the base tube III, and the larger the heat exchange area of the finned tube is. However, if the pitch of the fins III is reduced to a certain degree, the heat exchange efficiency is limited, and the pitch of the fins III is preferably 2.2 to 4.8 mm. If the spacing is larger than the range, the number of the fins III in the length of the unit base tube III is reduced, the heat exchange efficiency is reduced, and the heat efficiency cannot be particularly effectively improved even if the height of the fins III is increased; if the spacing is smaller than the range, fluid outside the tube cannot fully enter the spacing of the fins III, and the effective area of the fins III is reduced.

Preferably, the fins III and the base pipe III are welded by laser.

Preferably, carbon steel, stainless steel, titanium material, aluminum product or copper product are independently selected separately to the material of parent tube III and fin III, and parent tube III and fin III's material can be the same also can be inequality, can select or make up according to actual practical environment, according to different material characteristics, the utility model discloses a multiple harsh practical environment such as high temperature, low temperature, high corrosion, high abrasion can extensively be applicable to the finned tube.

Preferably, two ends of the base pipe II of the heat insulation section are welded with the base pipe I of the condensation section and the base pipe III of the evaporation section through laser.

It should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Finally, it should be noted that: the above embodiments are only used for illustrating but not limiting the technical solutions of the present invention, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made thereto without departing from the spirit and scope of the invention, and the appended claims are intended to cover such modifications and equivalents as fall within the spirit and scope of the invention.

Claims

1. A heat pipe heat exchanger is characterized in that: the method comprises the following steps: the condensation section, adiabatic section and the evaporation zone that connect gradually, condensation section and evaporation zone are the finned tube, the condensation section includes: the base tube I and the fins I are spirally arranged on the outer wall of the base tube I, the fins I and the base tube I are welded by laser, and the base tube I and the fins I are made of carbon steel, stainless steel, titanium materials, aluminum materials or copper materials independently; the evaporation section includes: the base tube III and the fin III are spirally arranged on the outer wall of the base tube III, the fin III and the base tube III are welded by laser, and the base tube III and the fin III are made of carbon steel, stainless steel, titanium materials, aluminum materials or copper materials independently; the heat insulation section comprises a base pipe II and a heat insulation layer, and two ends of the base pipe II of the heat insulation section are welded with the base pipe I of the condensation section and the base pipe III of the evaporation section through laser.

2. A heat pipe heat exchanger as claimed in claim 1, wherein: the fins I are uniformly or non-uniformly arranged on the outer wall of the base tube I, and the distance between every two adjacent fins I is 2.2-4.8 mm.

3. A heat pipe heat exchanger as claimed in claim 1, wherein: the fins III are uniformly or non-uniformly arranged on the outer wall of the base tube III, and the distance between every two adjacent fins III is 2.2-4.8 mm.