CN210638549U

CN210638549U - Small-size spiral winding elasticity tubular heat exchanger

Info

Publication number: CN210638549U
Application number: CN201921696470.0U
Authority: CN
Inventors: 高润淼; 季家东; 陈卫强; 刘保银
Original assignee: Anhui University of Science and Technology
Current assignee: Anhui University of Science and Technology
Priority date: 2019-10-11
Filing date: 2019-10-11
Publication date: 2020-05-29
Anticipated expiration: 2029-10-11

Abstract

The utility model relates to a small spiral winding elastic tube type heat exchanger, which comprises a sealing head, an outer calandria, a middle calandria, an inner calandria, a barrel, a flange, a gasket, a tube plate and a connecting tube; the inner row pipes, the middle row pipes and the outer row pipes are uniformly and fixedly connected to the tube plate along the circumferential direction respectively; the cylinder body is fixedly connected between the front tube plate and the rear tube plate; the front and rear end enclosures are respectively fixedly connected with the front and rear tube plates, and a gasket is arranged between the tube plates and the end enclosures; each row of tube bundles adopts a copper tube and is of a spiral tubular structure, the spiral directions of two adjacent rows of tube bundles are opposite, and the spiral turns of each row of tube bundles are sequentially increased from outside to inside, so that the tube bundles can be induced by shell-side fluid to vibrate to realize heat exchange enhancement, reduce heat transfer surface fouling and noise, and prolong the service life; through the flanges arranged on the inlets and the outlets and the connecting pipes thereof, the single-row/array combined installation of a plurality of heat exchangers can be realized, and the flexible assembly and disassembly can be realized according to the requirements of actual conditions.

Description

Small-size spiral winding elasticity tubular heat exchanger

Technical Field

The utility model relates to a heat exchanger design technical field especially relates to a small-size spiral winding elasticity tubular heat exchanger.

Background

The heat exchanger is an energy-saving device for realizing heat transfer between two or more than two fluids with different temperatures, the heat is transferred from the fluid with higher temperature to the fluid with lower temperature, the temperature of the fluid reaches the index specified by the process so as to meet the requirement of process conditions, and meanwhile, the heat exchanger is one of main devices for improving the energy utilization rate, and is widely applied to the industrial fields of petroleum, chemical industry, nuclear power, refrigeration and the like.

The internal heat exchange elements of the traditional shell-and-tube heat exchanger adopt a plurality of stainless steel straight tubes, so that the overall structure size is large, and the assembly flexibility is low; the heat transfer element in the traditional sleeve type heat exchanger adopts a single stainless steel straight pipe, so that the structure is simple, and the heat exchange efficiency is low. Since vibration of the heat transfer elements in a fluid-induced heat exchanger can lead to fatigue failure, methods of preventing vibration, avoiding failure by increasing the strength of the rigid tube bundle, are not always effective. The elastic tube bundle heat exchanger utilizes the elastic heat transfer element (copper tube) to replace the traditional rigid element (stainless steel tube), fully utilizes the vibration of the fluid induced elastic heat transfer element to realize the enhanced heat transfer, and has obvious advantages in the aspects of preventing the tube bundle from being damaged, reducing the noise and automatically descaling. However, the heat exchanger with elastic tube bundle has the disadvantages of insignificant effect of enhancing heat transfer and low flexibility of using multiple heat exchangers in combination due to the limitations of the arrangement and overall size of the inner tube bundle. Based on the problems of the heat exchanger, the requirements of high efficiency and flexibility cannot be met.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve the problem that exists among the current tubular heat exchanger practical engineering application, provide a small-size spiral winding elasticity tubular heat exchanger.

The utility model discloses a realize through following technical scheme:

a small-sized spiral winding elastic tube type heat exchanger comprises an end socket, an outer discharge tube, a middle discharge tube, an inner discharge tube, a cylinder body, a flange, a gasket, a tube plate and a connecting tube; the outer calandria, the middle calandria and the inner calandria are uniformly and fixedly connected to the front and rear tube plates along the circumferential direction respectively; the cylinder body is fixedly connected between the front tube plate and the rear tube plate; the front and rear end enclosures are respectively fixedly connected with the front and rear tube plates; a gasket is arranged between the tube plate and the end enclosure; through the flanges and the connecting pipes arranged on the inlets and the outlets, the single-row/array combined installation of a plurality of heat exchangers can be realized.

As the preferred technical scheme of the utility model, interior calandria, well calandria and outer calandria all adopt spiral tubular structure.

As the preferred technical scheme of the utility model, interior calandria, well calandria and outer calandria all adopt copper tubing.

As the preferred technical scheme of the utility model, outer calandria and well calandria spiral opposite direction, well calandria and interior calandria spiral opposite direction, the spiral opposite direction of two adjacent rows of tube bundles promptly.

As the utility model discloses an optimized technical scheme, outer calandria, well calandria and interior calandria spiral number of turns increase in proper order separately.

As the preferred technical scheme of the utility model, outer calandria, well calandria and interior calandria circumference distribution number reduce in proper order.

As the utility model discloses a preferred technical scheme, the flange of small-size spiral winding elasticity tubular heat exchanger accessible fixed connection on each access & exit in the plane realizes multiunit heat exchanger list row/array aggregate erection.

When the small spiral winding elastic tube type heat exchanger is used on site, a pressure test and an air tightness test are carried out before the small spiral winding elastic tube type heat exchanger is installed. When heat exchange is carried out, cold media enter from the pipe orifice of the end socket and flow in the outer discharge pipe, the middle discharge pipe and the inner discharge pipe, and the path is called as a pipe pass; the heat medium flows in the outer row of tubes, the middle row of tubes and the gap between the inner row of tubes and the cylinder, and this path is called the shell side. The small spiral winding elastic tube type heat exchanger adopts a transverse installation mode, and according to the requirement of actual heat exchange requirements, a plurality of heat exchangers are fixedly connected with flanges and connecting pipes on the inlets and the outlets to realize the single-row/array combined installation of a plurality of groups of heat exchangers. When the cold medium pipe is opened, the pipe pass inlet is opened first, and then the pipe pass outlet is opened, so that the cold medium is filled in the pipe pass. Then the shell pass outlet is opened, then the shell pass inlet is opened, and the heat medium flows in the shell pass, so that the heat exchange effect is achieved. When the temperature of the heat medium is reduced to a certain degree, the shell pass inlet is closed, the shell pass outlet is closed, the tube pass inlet is closed, and the tube pass outlet is closed.

Compared with the prior art, the beneficial effects of the utility model are that: the tube bundles of the utility model all adopt the copper tubes, and the copper tubes are used as an elastic material, so that the heat exchange can be enhanced by inducing the tube bundles to vibrate through the shell side fluid, the heat transfer surface scale and noise can be reduced, and the service life can be prolonged; by replacing a straight pipe with a spiral pipe, fluid can form secondary flow in the pipe, and heat transfer enhancement is realized; the spiral directions of two adjacent rows of tube bundles are opposite, so that the turbulence characteristic of a shell pass fluid is improved, and the enhanced heat transfer is realized; the number of spiral turns of the tube bundle is sequentially increased from outside to inside, so that the vibration intensity of each tube bundle is consistent; through flange and the connecting pipe on setting up each discrepancy mouth of pipe, can realize a plurality of heat exchanger list/array composite set, can assemble in a flexible way and dismantle according to actual conditions's needs.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a sectional view a-a in fig. 1.

Fig. 3 is a schematic structural view of a plurality of combination installations of the present invention.

In the figure: 1-end enclosure, 2-outer calandria, 3-middle calandria, 4-inner calandria, 5-barrel, 6-flange, 7-gasket, 8-tube plate, 9-connecting tube and 10-small spiral winding elastic tube type heat exchanger.

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.

Referring to fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic structural view of the present invention, fig. 2 is a sectional view taken along a line a-a in fig. 1, and fig. 3 is a schematic structural view of a plurality of assembly assemblies of the present invention.

The utility model provides a small-size spiral winding elasticity tubular heat exchanger, includes outer calandria 2, well calandria 3 and interior calandria 4, the both ends mouth of pipe of outer calandria 2 is in the same place with the outermost circumference hole fixed connection of distribution at both ends tube sheet 8 along the even equidistance of circumferencial direction, the both ends mouth of pipe of well calandria 3 is in the same place with the circumference hole fixed connection who distributes in both ends tube sheet 8 intermediate level along the even equidistance of circumferencial direction, the both ends mouth of pipe of interior calandria 4 is in the same place with the circumference hole fixed connection who distributes at both ends tube sheet 8 inlayer along the. The tube plate 8 is fixedly connected with the cylinder 5, the tube plate 8 is fixedly connected with the seal head 1, and a sealing gasket 7 is arranged between the tube plate 8 and the seal head 1, so that the sealing performance is improved.

When the single-row/array combined installation of the small spiral winding elastic tube type heat exchanger is carried out, the 1 pipe orifice of the end socket and the 5 pipe orifices of the cylinder body of the small spiral winding elastic tube type heat exchanger 10 are provided with the flanges 6, the flanges 6 arranged on the 1 pipe orifice of the end socket are fixedly connected with the flanges 6 arranged on the pipe orifices of one end of the connecting pipe 9, the flanges 6 arranged on the pipe orifices of the other end of the connecting pipe 9 are fixedly connected with the flanges 6 arranged on the 1 pipe orifice of the end socket of another small spiral winding elastic tube type heat exchanger 10, and the flanges 6 arranged on the 5 pipe orifices of the cylinder body of the small spiral winding elastic tube type heat exchanger 10 are fixedly connected with the flanges 6 arranged on the pipe orifice of the cylinder body.

The outer calandria 2, the middle calandria 3 and the inner calandria 4 are all in spiral tubular structures and are copper tubes.

The spiral directions of the outer row of tubes 2 and the middle row of tubes 3 are opposite, and the spiral directions of the middle row of tubes 3 and the inner row of tubes 4 are opposite, namely the spiral directions of the tube bundles in the two adjacent rows are opposite.

The spiral turns of the outer calandria 2, the middle calandria 3 and the inner calandria 4 are sequentially increased, and the circumferential distribution number is sequentially reduced.

The small spiral winding elastic tubular heat exchanger 10 can realize single-row/array combined installation of a plurality of groups of heat exchangers by fixedly connecting the flanges 6 and the connecting pipes 9 on the inlets and the outlets in a horizontal plane.

In field use, the small spiral wound elastic tube heat exchanger 10 is subjected to a pressure test and a gas tightness test before installation. When heat exchange is carried out, cold media enter from the pipe orifice of the end socket 1 and flow in the outer discharge pipe 2, the middle discharge pipe 3 and the inner discharge pipe 4, and the path is called as a pipe pass; the heat medium flows in the gaps between the outer row of tubes 2, the middle row of tubes 3 and the inner row of tubes 4 and the cylinder 5, and this path is called the shell side. The utility model discloses the tube bank structure that adopts can strengthen the heat transfer and reduce heat transfer surface scaling and noise, can also improve life. The small spiral winding elastic tube type heat exchanger 10 adopts a transverse installation mode, and according to the requirement of actual heat exchange requirements, a plurality of heat exchangers are fixedly connected with flanges 6 and connecting pipes 9 on inlet and outlet pipe orifices to realize single-row/array combined installation of a plurality of groups of heat exchangers. When the cold medium pipe is opened, the pipe pass inlet is opened first, and then the pipe pass outlet is opened, so that the cold medium is filled in the pipe pass. Then the shell pass outlet is opened, then the shell pass inlet is opened, and the heat medium flows in the shell pass, so that the heat exchange effect is achieved. When the temperature of the heat medium is reduced to a certain degree, the shell pass inlet is closed, the shell pass outlet is closed, the tube pass inlet is closed, and the tube pass outlet is closed.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A small-size spiral winding elasticity tubular heat exchanger which characterized in that: the device comprises an end socket (1), an outer discharge pipe (2), a middle discharge pipe (3), an inner discharge pipe (4), a cylinder body (5), a flange (6), a gasket (7), a tube plate (8) and a connecting pipe (9); the outer calandria (2), the middle calandria (3) and the inner calandria (4) are uniformly and fixedly connected to the tube plate (8) along the circumferential direction respectively; the cylinder body (5) is fixedly connected between the front tube plate and the rear tube plate (8); a gasket is arranged between the tube plate (8) and the seal head (1); the front and rear seal heads (1) are respectively fixedly connected with the front and rear tube plates (8), and a gasket (7) is arranged between the tube plates (8) and the seal heads (1).

2. A compact spiral wound, resilient tube heat exchanger as claimed in claim 1, wherein: the outer calandria (2), the middle calandria (3) and the inner calandria (4) all adopt spiral tubular structures.

3. A compact spiral wound, resilient tube heat exchanger as claimed in claim 1, wherein: the outer calandria (2), the middle calandria (3) and the inner calandria (4) are all made of copper tubes.

4. A compact spiral wound, resilient tube heat exchanger as claimed in claim 1, wherein: the spiral directions of the outer row pipe (2) and the middle row pipe (3) are opposite, the spiral directions of the middle row pipe (3) and the inner row pipe (4) are opposite, namely the spiral directions of the tube bundles in the two adjacent rows are opposite.

5. A compact spiral wound, resilient tube heat exchanger as claimed in claim 1, wherein: the spiral turns of the outer calandria (2), the middle calandria (3) and the inner calandria (4) are increased in sequence.

6. A compact spiral wound, resilient tube heat exchanger as claimed in claim 1, wherein: the number of the outer calandria (2), the middle calandria (3) and the inner calandria (4) distributed in the circumferential direction is reduced in sequence.

7. A compact spiral wound, resilient tube heat exchanger as claimed in claim 1, wherein: the single-row/array combined installation of a plurality of heat exchangers is realized by fixedly connecting each inlet and outlet and a flange (6) arranged on a connecting pipe (9).