CN212931090U

CN212931090U - Coaxial double-pipe heat exchanger of shape is returned in plane winding

Info

Publication number: CN212931090U
Application number: CN202020855567.8U
Authority: CN
Inventors: 缪君明; 陈佳; 吴飞军; 孙元贵
Original assignee: Jiangsu Yuanzhuo Equipment Manufacturing Co ltd
Current assignee: Jiangsu Yuanzhuo Equipment Manufacturing Co ltd
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-04-09
Anticipated expiration: 2030-05-21

Abstract

The utility model relates to a coaxial double-pipe heat exchanger of shape is returned in plane winding, its characterized in that: including inner tube (6) and outer tube (4), inner tube (6) and outer tube (4) coaxial setting form the sleeve pipe, and the medium in interior, the outer tube intermediate layer and the inner tube forms the heat transfer, the sleeve pipe has at least that the upper plane returns the shape pipeline and the shape pipeline is returned to lower floor's plane, the shape pipeline is returned to the upper plane and the shape pipeline is equallyd divide and is formed by straight tube and return bend interval concatenation in proper order to the lower floor's plane. When the heat exchanger works, because the medium continuously flows through the straight pipe and the bent pipe and is continuously reversed, the flow velocity of the medium can be continuously changed when the medium flows, the generation of turbulent flow in the pipeline is accelerated, and the heat exchange efficiency of the two media is improved. The sleeve pipe adopts the very big utilization that has improved the space of plane winding's mode, can reduce whole heat exchanger volume, and the preparation is easy, the installation of being convenient for.

Description

Coaxial double-pipe heat exchanger of shape is returned in plane winding

Technical Field

The utility model belongs to the technical field of the pipe heat exchanger, concretely relates to winding double pipe heat exchanger in plane.

Background

At present, a coaxial sleeve heat exchanger in the market mainly adopts a three-dimensional square or runway type winding mode, and a sleeve can only change back and forth in a linear pipeline and an arc pipeline with the same length, so that the generation of turbulent flow of refrigerant and secondary refrigerant during the operation of the heat exchanger is not facilitated, and the heat exchange efficiency is influenced. And the space utilization efficiency is low and the volume is huge. A small amount of mosquito-repellent incense type coaxial sleeve heat exchangers adopt plane winding, but the mosquito-repellent incense type sleeve heat exchangers use a bent pipe in an involute-like mode, and the outer pipe of the heat exchanger is unsupported in the pipe bending process, so that the outer pipe of the heat exchanger is seriously deformed, the out-of-roundness rate of the heat exchanger generally reaches more than 30 percent, and the heat exchange effect of the heat exchanger is serious.

Publication number CN210070691U discloses flue gas waste heat pipe recovery unit, including one or more phase transition heat exchange sleeve unit, phase transition heat exchange sleeve unit includes inner tube and outer tube, and the outside of inner tube is adorned to the outer tube suit, the shutoff of outer tube both ends, and the inner tube runs through the outer tube both ends, and the central line of inner tube and the central line eccentric settings of outer tube are equipped with phase transition medium between inner tube and the outer tube, connect through connecting the elbow between two liang of phase transition heat exchange sleeve unit's the inner tube. The inner tube is through the elbow intercommunication in this patent, but the outer tube both ends are sealed, each other not intercommunication, mutual independence between outer tube and the outer tube for the phase transition medium of outer tube and inner tube can't form the circulation, has influenced heat exchange efficiency.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a plane winding coaxial sleeve heat exchanger aiming at the defects of the prior art, which has good reliability and high heat exchange efficiency; and the structure is simple, the manufacture is easy, and the assembly is convenient.

The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a coaxial double-pipe heat exchanger of shape is returned in plane winding, includes inner tube and outer tube, inner tube and the coaxial setting of outer tube form the sleeve pipe, and the medium in the intermediate layer of inside and outside tube and the medium in the inner tube form the heat transfer, the sleeve pipe has upper plane at least and returns the shape pipeline and the shape pipeline is returned to lower floor's plane, upper plane returns the shape pipeline and the shape pipeline of lower floor's plane is equallyd divide and is formed by straight tube and return bend interval concatenation in proper order.

Preferably, the upper layer of planar square-shaped pipeline and the lower layer of planar square-shaped pipeline are respectively of a planar square-shaped winding structure. The square-type convolution structure is more capable of forming turbulent flow of media than the row-type pipe.

Preferably, the upper layer of planar loop pipeline and the lower layer of planar loop pipeline are respectively wound in a single circle or wound in multiple circles inside and outside. Under the same installation volume, the inner and outer multi-turn winding has a longer flow path than the single-turn winding, and heat exchange is promoted.

Preferably, the inner pipe is a copper pipe, a nickel-copper tube or a stainless steel pipe, and the materials have good heat conductivity coefficients and are ideal heat exchange materials.

Preferably, two ends of the outer pipe are respectively provided with an end pipe, the two ends of the outer pipe are sealed, and the two end pipes are provided with first connecting pipes which penetrate through the space between the inner pipe and the outer pipe; and two ends of the inner pipe respectively penetrate out of the end pipe and are provided with second connecting pipes.

Compared with the prior art, the utility model has the advantages of: this application plane winding returns coaxial double-pipe heat exchanger of type adopts inner tube and the coaxial setting of outer tube to form the sleeve pipe, and the sleeve pipe adopts the square structure of circling round in plane, is formed by long, short straight tube and big, little return bend interval concatenation. When the heat exchanger works, because the medium continuously flows through the straight pipe and the bent pipe and is continuously reversed, the flow velocity of the medium can be continuously changed when the medium flows, the generation of turbulent flow in the pipeline is accelerated, and the heat exchange efficiency of the two media is improved.

The sleeve pipe adopts the very big utilization that has improved the space of plane winding's mode, can reduce whole heat exchanger volume, and the preparation is easy, the installation of being convenient for.

Drawings

Fig. 1 is a schematic structural diagram of a heat exchanger according to an embodiment of the present invention;

in the figure, a 1 waterway inlet, a 2 fluorine waterway outlet, a 3 end pipe, a 4 outer pipe, a 5 waterway outlet, a 6 inner pipe and a 7 fluorine waterway inlet.

Detailed Description

The invention is described in further detail below with reference to the embodiments of the drawing, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.

The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

The embodiment relates to a plane winding circle-shaped coaxial double-pipe heat exchanger which comprises an inner pipe 6 and an outer pipe 4, wherein the inner pipe 6 and the outer pipe 4 are coaxially arranged to form a double-pipe, fluorine refrigerants are introduced into interlayers of the inner pipe and the outer pipe, and water, the water and the fluorine refrigerants are introduced into the inner pipe for convection contactless heat exchange. The sleeve pipe includes that upper strata plane returns the shape pipeline and the shape pipeline returns in lower floor's plane, and upper strata plane returns the shape pipeline and the shape pipeline returns in lower floor's plane equally divide and do not be the square convolution structure in plane and be inside and outside many circles convolution structures, and the interval concatenation forms in proper order by straight tube and return bend, and upper and lower floor's plane returns the shape pipeline and passes through the return bend intercommunication.

Two ends of the outer pipe 4 are respectively provided with an end pipe 3 (steel sleeve), the two ends of the outer pipe are sealed, meanwhile, the two end pipes 3 are respectively provided with a first connecting pipe, the first connecting pipe penetrates through the inner pipe 6 and the outer pipe 4, one of the two first connecting pipes is used as a fluorine path outlet 2, and the other one of the two first connecting pipes is used as a fluorine path inlet 7. Two ends of the inner pipe 6 respectively penetrate out of the end pipe 3 and are provided with second connecting pipes, the second connecting pipes are communicated with the inner pipe 6, one of the two second connecting pipes is used as a waterway inlet 1, and the other one of the two second connecting pipes is used as a waterway outlet 5.

The fluorine refrigerant enters an interlayer of the inner pipe and the outer pipe, is mixed and balanced in the straight line pipeline and then enters the bent pipe, the refrigerant flows in the bent pipe due to the change of the flow channel at the moment and is scattered in a turbulent flow mode, the cold and heat balance in the refrigerant is promoted, the refrigerant continuously passes through the straight pipe and the bent pipe, the processes are continuously repeated, and then the refrigerant enters the lower-layer plane loop pipeline through the rotation of the bent pipe.

The inner tube 6 is a heat conductive member for fluorine refrigerant and water, and is made of one material selected from red copper, nickel-copper-nickel alloy, and stainless steel.

Although the preferred embodiments of the present invention have been described in detail hereinabove, it should be clearly understood that modifications and variations of the present invention are possible to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a coaxial double-pipe heat exchanger of shape is returned in plane winding which characterized in that: including inner tube (6) and outer tube (4), inner tube (6) and outer tube (4) coaxial setting form the sleeve pipe, and the medium in interior, the outer tube intermediate layer and the inner tube forms the heat transfer, the sleeve pipe has at least that the upper plane returns the shape pipeline and the shape pipeline is returned to lower floor's plane, the shape pipeline is returned to the upper plane and the shape pipeline is equallyd divide and is formed by straight tube and return bend interval concatenation in proper order to the lower floor's plane.

2. The flat wound, clip-on coaxial double pipe heat exchanger of claim 1, wherein: the upper layer of planar square-shaped pipelines and the lower layer of planar square-shaped pipelines are respectively of a planar square-shaped winding structure.

3. The planar wound loop coaxial double pipe heat exchanger of claim 1 or 2, wherein: the upper layer plane loop pipeline and the lower layer plane loop pipeline are respectively wound in a single circle or wound in multiple circles inside and outside.

4. The flat wound, clip-on coaxial double pipe heat exchanger of claim 1, wherein: the inner pipe (6) is a copper pipe, a nickel-copper tube or a stainless steel pipe.

5. The flat wound, clip-on coaxial double pipe heat exchanger of claim 1, wherein: end pipes (3) are respectively arranged at two ends of the outer pipe (4), two ends of the outer pipe (4) are sealed, first connecting pipes are arranged on the two end pipes (3), and the first connecting pipes penetrate through the space between the inner pipe (6) and the outer pipe (4); and two ends of the inner pipe (6) respectively penetrate out of the end pipe (3) and are provided with second connecting pipes.