CN211084902U

CN211084902U - Nine-tube heat exchanger

Info

Publication number: CN211084902U
Application number: CN201921939428.7U
Authority: CN
Inventors: 张俊艺
Original assignee: Guangdong Nianzhi Energy Saving Technology Co ltd
Current assignee: Guangdong Nianzhi Energy Saving Technology Co ltd
Priority date: 2019-11-11
Filing date: 2019-11-11
Publication date: 2020-07-24
Anticipated expiration: 2029-11-11

Abstract

The utility model discloses a nine-tube heat exchanger, which comprises a heat exchange tube bundle, wherein the heat exchange tube bundle comprises nine heat exchange tubes which are arranged into the heat exchange tube bundle with an upper heat exchange tube layer and a lower heat exchange tube layer; two adjacent heat exchange tubes in the same heat exchange tube layer are connected through an elbow and arranged in an approximate S shape; the heat exchange tubes in the upper heat exchange tube layer are connected in series with the heat exchange tubes in the lower heat exchange tube layer, so that a unique heat exchange channel is formed. The utility model discloses novel structure, two intraformational adjacent heat exchange tubes of same heat exchange tube pass through elbow end to end connection, and go up the intraformational heat exchange tube of heat exchange tube and establish ties into only heat transfer passageway with the intraformational heat exchange tube of heat exchange tube down, so the heat transfer medium in the heat exchange tube will be earlier horizontal flow and flow from top to bottom, when the heating source is in top or below, its heat transfer medium will last the longer time respectively in being close to the heating source and keeping away from the two kinds of states of heating source to the whole heat exchange efficiency of heat exchanger has been improved.

Description

Nine-tube heat exchanger

Technical Field

The utility model relates to a heat transfer device field especially relates to a nine tubular heat exchanger.

Background

The heat exchanger is an important heat transfer device and is widely applied to various fields of modern chemical industry, electric power, oil refining, refrigeration and the like. The heat exchanger generally comprises a plurality of heat exchange tubes and fins arranged on the heat exchange tubes, wherein two ends of each heat exchange tube are respectively provided with an interface for inlet and outlet, and the other tubes are connected end to end in pairs by arc-shaped elbows at the two ends through a brazing process, so that the heat exchange tubes are connected in series to form a unique passage. At present, most of heat exchange tubes in heat exchangers on the market are single-layer, so that the heat exchange tubes not only occupy a large space, but also are difficult to install in equipment with a small size. For this reason, there is the trade company to set the heat exchange tube to the bilayer, has not only reduced occupation space, and has prolonged the heat transfer pipeline, improves heat exchange efficiency. However, as for the current double-layer heat exchange tube, the flow direction of the heat exchange medium is mostly in an up-down alternating mode, when the heating source is positioned above or below, the heat exchange medium is alternately carried out in two states of being close to the heating source and being far away from the heating source, and the heat exchange efficiency is low.

Therefore, how to provide a heat exchanger with small occupied space and high heat exchange efficiency is a technical problem to be solved urgently by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above prior art at least one kind of defect, the utility model provides a nine tubular heat exchanger that occupation space is little, and heat exchange efficiency is high.

The utility model discloses a solve the technical scheme that its problem adopted and be:

the utility model provides a nine-tube heat exchanger, includes heat exchanger tube bank and a plurality of fin, heat exchanger tube bank includes nine heat exchange tubes, wherein:

nine heat exchange tubes are arranged into a heat exchange tube bundle with an upper heat exchange tube layer and a lower heat exchange tube layer;

two adjacent heat exchange tubes in the same heat exchange tube layer are connected through an elbow and arranged in an approximate S shape;

the heat exchange tubes in the upper heat exchange tube layer are connected in series with the heat exchange tubes in the lower heat exchange tube layer, so that a unique heat exchange channel is formed;

the plurality of fins are arranged on the heat exchange tube bundle along the axis direction of the heat exchange tubes.

Therefore, nine heat exchange tubes are arranged into the heat exchange tube bundle with the double-layer heat exchange tube layer, so that the occupied space is reduced, the heat exchange pipeline is prolonged, and the heat exchange efficiency is improved. In addition, two adjacent heat exchange tubes in the same heat exchange tube layer are connected end to end through the elbows, and the heat exchange tubes in the upper heat exchange tube layer and the lower heat exchange tube layer are connected in series to form a unique heat exchange channel, so that a heat exchange medium in the heat exchange tubes horizontally flows and then flows up and down, and when the heating source is positioned above or below, the heat exchange medium lasts for a long time respectively in two states of being close to the heating source and being far away from the heating source, thereby improving the overall heat exchange efficiency of the heat exchanger.

Further, nine heat exchange tubes are all arranged in parallel, and the end parts of the heat exchange tubes are mutually flush.

Further, still include heat exchanger tube bank fixed plate, set up on the heat exchanger tube bank fixed plate with nine first through-holes of heat exchange tube pipe diameter assorted, nine the heat exchange tube all runs through first through-hole.

From this, through the fixed heat exchanger tube bank of heat exchanger tube bank fixed plate, guaranteed that the interval is even between heat exchange tube and the pipe, prevent that the heat exchange tube from deformation production stress when the heating to destroy the structure of whole heat exchanger.

Further, the heat exchange tube bundle fixing plates are arranged at two ends of the heat exchange tube bundle.

Further, the heat exchange tube bundle fixing plate is integrally formed.

Furthermore, a plurality of fins are all located between the heat exchange tube bundle fixing plates.

Therefore, the fins are arranged on the heat exchange tube bundle, so that the heat exchange surface area of the heat exchanger is increased, and the heat exchange efficiency of the heat exchanger is further improved.

Further, the fin is wavy structure, just seted up on the fin with nine heat exchange tube pipe diameter assorted second through-holes, nine the heat exchange tube all runs through the second through-hole.

From this, through set up the second through-hole on the fin, and nine heat exchange tubes all pass the second through-hole, can guarantee that the fin is difficult for taking place to warp at the in-process of being heated to protect the heat exchanger better.

To sum up, the utility model provides a pair of nine tubular heat exchangers arranges nine heat exchange tubes into the heat exchanger tube bank that has double-deck heat exchange tube layer, has not only reduced occupation space, and has lengthened heat transfer pipeline, improves heat exchange efficiency. In addition, two adjacent heat exchange tubes in the same heat exchange tube layer are connected end to end through an elbow, and the heat exchange tubes in the upper heat exchange tube layer and the heat exchange tubes in the lower heat exchange tube layer are connected in series to form a unique heat exchange channel, so that the flow direction of a heat exchange medium in the heat exchange tubes is horizontal and then vertical, when the heating source is positioned above or below, the heat exchange medium lasts for a long time respectively in two states of being close to the heating source and being far away from the heating source, and therefore the overall heat exchange efficiency of the heat exchanger is improved.

Drawings

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

FIG. 2 is a schematic view of the structure of FIG. 1 with fins removed;

FIG. 3 is a schematic structural view of a heat exchange tube bundle retaining plate of FIG. 1;

fig. 4 is a schematic structural view of the fin of fig. 1.

Wherein the reference numerals have the following meanings:

1. a nine-tube heat exchanger; 11. a heat exchange tube bundle; 111. a heat exchange pipe; 112. bending the pipe; 113. an inlet pipe and an outlet pipe; 12. a fin; 121. a second through hole; 13. a heat exchange tube bundle fixing plate; 131. a first via.

Detailed Description

For better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1-4, the present invention discloses a nine-tube heat exchanger 1, wherein the nine-tube heat exchanger 1 can be applied to heat exchange equipment, for example: gas steam engines, steam generators, water heaters, and the like. The nine-tube heat exchanger 1 can be fixed in a combustion chamber.

This nine-tube heat exchanger 1 includes heat exchanger tube bundle 11, and this heat exchanger tube bundle 11 includes nine heat exchange tubes 111, and nine heat exchange tubes 111 arrange into double-deck heat exchanger tube bundle 11 that has upper heat exchange tube layer and lower heat exchange tube layer, and in this embodiment, this upper heat exchange tube layer includes four heat exchange tubes 111, and this lower heat exchange tube layer includes five heat exchange tubes 111. The heat exchange tubes 111 on the upper heat exchange tube layer and the heat exchange tubes 111 on the lower heat exchange tube layer are parallel and staggered with each other, and the end parts are flush. Two adjacent heat exchange tubes 111 in the same heat exchange tube layer are connected through an elbow 112 and arranged in an approximate S shape; the heat exchange tubes 111 in the upper heat exchange tube layer are connected in series with the heat exchange tubes 111 in the lower heat exchange tube layer to form a unique heat exchange channel. In addition, inlet and outlet pipes 113 are provided at both ends of the heat exchange tube bundle 11 to facilitate the inflow and outflow of the heat exchange medium.

Therefore, nine heat exchange tubes 111 are arranged into the heat exchange tube bundle 11 with the double-layer heat exchange tube layer, so that the occupied space is reduced, the heat exchange tubes are prolonged, and the heat exchange efficiency is improved. In addition, two adjacent heat exchange tubes 111 in the same heat exchange tube layer are connected end to end through an elbow 112, and the heat exchange tube 111 in the upper heat exchange tube layer and the heat exchange tube 111 in the lower heat exchange tube layer are connected in series to form a unique heat exchange channel, so that a heat exchange medium in the heat exchange tube 111 flows horizontally and then flows vertically, when a heating source is positioned above or below, the heat exchange medium respectively lasts for a long time in two states of being close to the heating source and being far away from the heating source, and therefore the overall heat exchange efficiency of the nine-tube heat exchanger 1 is improved.

In addition, the nine-tube heat exchanger 1 further comprises a heat exchange tube bundle fixing plate 13, wherein the heat exchange tube bundle fixing plate 13 is provided with first through holes 131 matched with the tube diameters of the nine heat exchange tubes 111, and the nine heat exchange tubes 111 all penetrate through the first through holes 131; the bundle retention plate 13 is welded to the bundle 11.

From this, through fixed heat exchanger tube bank 11 of heat exchanger tube bank fixed plate 13, guaranteed that the interval is even between heat exchange tube 111 and the pipe, prevent that heat exchange tube 111 from deformation production stress when heating, destroying the structure of whole heat exchanger.

In addition, the nine-tube heat exchanger 1 further includes a plurality of fins 12, in this embodiment, the fins 12 are formed by straight plates, the upper and lower edges of the straight plates are wavy, and a vertical plate is bent at both the left and right sides, so as to form an approximately "concave" structure. The fin 12 is provided with a second through hole 121 matched with the tube diameters of the nine heat exchange tubes 111, and the nine heat exchange tubes 111 all penetrate through the second through hole 121. In the present embodiment, a plurality of fins 12 are located between tube bundle fixing plates 13 and arranged on tube bundle 11 along the axial direction of heat exchange tubes 111. The fins 12 are welded to the heat exchanger tube bundle 11.

Therefore, the fins 12 are arranged on the heat exchange tube bundle 11, so that the heat exchange surface area of the heat exchanger is increased, and the heat exchange efficiency of the heat exchanger is further improved. In addition, through set up second through-hole 121 on fin 12, and nine heat exchange tubes 111 all pass second through-hole 121, can guarantee that fin 12 is difficult for taking place to warp in the process of being heated to protect the heat exchanger better.

The technical means disclosed by the scheme of the present invention is not limited to the technical means disclosed by the above embodiments, but also includes the technical scheme formed by the arbitrary combination of the above technical features. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications are also considered as the protection scope of the present invention.

Claims

1. The utility model provides a nine-tube heat exchanger, includes heat exchanger tube bank (11) and a plurality of fin (12), heat exchanger tube bank (11) include nine heat exchange tubes (111), its characterized in that:

nine heat exchange tubes (111) are arranged into a heat exchange tube bundle (11) with an upper heat exchange tube layer and a lower heat exchange tube layer;

two adjacent heat exchange tubes (111) in the same heat exchange tube layer are connected through an elbow (112) and arranged in an approximate S shape;

the heat exchange tubes (111) in the upper heat exchange tube layer are connected with the heat exchange tubes (111) in the lower heat exchange tube layer in series, so that a unique heat exchange channel is formed;

the plurality of fins (12) are arranged on the heat exchange tube bundle (11) along the axial direction of the heat exchange tubes (111).

2. Nine-tube heat exchanger according to claim 1, characterised in that nine heat exchange tubes (111) are arranged in parallel and their ends are flush with each other.

3. The nine-tube heat exchanger according to claim 1 or 2, further comprising a heat exchange tube bundle fixing plate (13), wherein the heat exchange tube bundle fixing plate (13) is provided with first through holes (131) matched with the nine heat exchange tubes (111) in pipe diameter, and the nine heat exchange tubes (111) all penetrate through the first through holes (131).

4. Nine-tube heat exchanger according to claim 3, characterised in that the bundle fixing plates (13) are arranged at both ends of the bundle (11).

5. Nine-tube heat exchanger according to claim 4, characterised in that the bundle fixing plate (13) is integrally formed.

6. The nine-tube heat exchanger according to claim 5, wherein a number of the fins (12) are each located between the bundle fixing plates (13).

7. The nine-tube heat exchanger according to claim 6, wherein the fin (12) is of a wavy structure, and the fin (12) is provided with second through holes (121) with the pipe diameters matched with those of the nine heat exchange tubes (111), and the nine heat exchange tubes (111) penetrate through the second through holes (121).