CN216745626U

CN216745626U - Spiral plate type heat exchanger

Info

Publication number: CN216745626U
Application number: CN202123389643.4U
Authority: CN
Inventors: 王国华; 朱宏
Original assignee: Jiangsu Shuoyun Petrochemical Equipment Co ltd
Current assignee: Jiangsu Shuoyun Petrochemical Equipment Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-06-14
Anticipated expiration: 2031-12-29

Abstract

The utility model discloses a spiral plate type heat exchanger, which belongs to the technical field of heat exchangers and comprises a shell and a heat exchange plate positioned in the shell, wherein the shell is divided into a spiral first flow channel and a spiral second flow channel by the heat exchange plate, the first flow channel is provided with a first inlet and a first outlet, the second flow channel is provided with a second inlet and a second outlet, and the first inlet is provided with more than one inlet pipe. According to the utility model, the two inlet pipes are arranged, so that the impact pressure of the medium entering the heat exchanger can be reduced, the impact force between two strands of media can be partially offset, the impact force on the necking flat plate is reduced, the flow of the heat exchanger is increased, and the service life of the heat exchanger is prolonged; after laminar flow entering the heat exchanger collides by two inlet pipes in a shunt way, the laminar flow is changed into turbulent flow, and the heat transfer efficiency of the heat exchanger is improved; the heat exchange plate is provided with the corrugations, so that turbulent flow is generated at a low flow speed, and a high surface heat transfer coefficient is obtained.

Description

Spiral plate type heat exchanger

Technical Field

The utility model belongs to the technical field of heat exchangers, and particularly relates to a spiral plate type heat exchanger.

Background

The spiral plate type heat exchanger is formed by rolling two plates, two uniform spiral channels are formed in the shell, two heat transfer media can flow in a full-countercurrent mode, the heat exchange effect is greatly enhanced, and the ideal heat exchange effect can be achieved even if two small temperature difference media are used. The inlet and outlet connecting pipes on the outer circumference of the shell of the spiral plate type heat exchanger generally adopt a tangential necking structure, the manufacturing method of the tangential necking structure is that the tangential necking is manufactured by lofting the extension part of a spiral plate according to the size of a connected pipeline, and one end of the pipeline is welded with the tangential necking. Because the tangential necking is a flat plate structure, the tangential necking is continuously stressed under the continuous impact of a fluid medium of the interface pipeline and is easy to deform, and the whole service life of the spiral plate type heat exchanger is influenced.

SUMMERY OF THE UTILITY MODEL

The technical problem is as follows: aiming at the problems in the prior art, the technical problem to be solved by the utility model is to provide a spiral plate type heat exchanger, which reduces the pressure borne by a tangential necking part of a shell of the heat exchanger and prolongs the service life of the heat exchanger.

The technical scheme is as follows: in order to solve the technical problems, the technical scheme adopted by the utility model is as follows:

the utility model provides a spiral plate heat exchanger, includes the casing and is located heat transfer board in the casing, the heat transfer board will divide into spiral helicine first runner and spiral helicine second runner in the casing, first runner is equipped with first import and first export, the second runner is equipped with second import and second export, be equipped with more than one import pipe on the first import.

Preferably, the number of the inlet pipes is two, the included angle between the two inlet pipes is beta, and beta is more than or equal to 15 degrees and less than 180 degrees.

Preferably, be connected with communicating pipe on the import pipe, communicating pipe includes main takeover and more than one branch pipe, the branch pipe with import union coupling.

Preferably, the branch pipe is an arc pipe.

Preferably, a branch pipe valve is arranged on the branch pipe.

Preferably, a plurality of corrugated protrusions are arranged on the heat exchange plate.

Has the beneficial effects that: compared with the prior art, the utility model has the following advantages: 1. by arranging the two inlet pipes, the impact pressure of the medium entering the heat exchanger can be reduced, the impact force between the two strands of media can be partially offset, the impact force on the necking flat plate is reduced, the flow of the heat exchanger is increased, and the service life of the heat exchanger is prolonged; 2. after laminar flow entering the heat exchanger collides by two inlet pipes in a shunt way, the laminar flow is changed into turbulent flow, and the heat transfer efficiency of the heat exchanger is improved; 3. the heat exchange plate is provided with the corrugations, so that turbulent flow is generated at a low flow speed, and a high surface heat transfer coefficient is obtained.

Drawings

FIG. 1 is a schematic top view of the structure of embodiment 1 of the present invention;

FIG. 2 is a schematic view of the internal structure of embodiment 1;

FIG. 3 is a schematic view of a plate surface structure of a heat exchange plate;

fig. 4 is a schematic top view of the housing of embodiment 2.

Detailed Description

The present invention will be further illustrated by the following specific examples, which are carried out on the premise of the technical scheme of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

Example 1

As shown in fig. 1 and 2, a spiral plate heat exchanger includes a shell 1 and a heat exchange plate 2, the heat exchange plate 2 is located in the shell 1 and is formed by rolling two metal plates, so as to divide the interior of the shell 1 into a spiral first flow channel 3 and a spiral second flow channel 4, the two flow channels are respectively circulated with two media, the two media complete heat exchange through the heat exchange plate 2 in the shell 1, the first flow channel 3 is provided with a first inlet 31 and a first outlet 32, the first inlet 31 is a tangential necking structure arranged on the outer circumference of the shell 1, the first outlet 32 is arranged at the center of the shell 1, the first media enter the heat exchanger from the first outlet 32, and after multiple spiral motions, the first media flow out from the first outlet 32; the second flow passage 4 is provided with a second inlet 41 and a second outlet 42, the second inlet 41 is arranged at the center of the circle at the other end of the casing 1, the second outlet 42 is a tangential necking structure arranged on the outer circumference of the casing 1, and a second medium enters the heat exchanger from the second inlet 41 and flows out from the second outlet 42 after multiple spiral motions.

Be equipped with two import pipes 5 on the first import 31 (the quantity of import pipe 5 also can set up a plurality ofly), two import pipes 5 are connected with first import 31 respectively, and the contained angle between two import pipes 5 is beta, beta 70, the first medium that two import pipes 5 got into flows to the heat exchanger in again after the collision, thereby the flat plate impact force to the 3 departments of throat reduces, be favorable to improving the flow, the life of extension plate body, and first medium forms the torrent after the collision, make the direct cambium flow of medium enter the heat exchanger and put the mode for current import pipe, the turbulent first medium heat transfer efficiency of this heat exchanger is higher.

The inlet pipe 5 is connected with a communicating pipe 6, the communicating pipe comprises a main connecting pipe 61 and two branch pipes 62, the two branch pipes 62 are respectively connected with one inlet pipe 5, the main connecting pipe 61 is used for being connected with an external pipeline and used for connecting a first medium, the branch pipes 62 are arc-shaped pipes, the first medium enters the inlet pipe 5 through the two arc-shaped branch pipes 62 after passing through the main connecting pipe 61, and therefore the first medium is divided into two paths and enters the heat exchanger after colliding in the first inlet 31. The branch pipe 62 is provided with a branch pipe valve 7, and the branch pipe valve 7 adopts the existing manual or automatic valve for controlling the on-off and the opening degree in the branch pipe 62, so that the water flow in each inlet pipe 5 can be adjusted, and the angle and the flowing state of the first medium can be adjusted.

As shown in fig. 3, a plurality of corrugated protrusions 21 are provided on the heat exchange plate 2, and the corrugated protrusions 21 may be provided on both the front and back surfaces of the heat exchange plate 2, so that the medium in the two flow channels can be turbulent at a small flow velocity, and thus a high surface heat transfer coefficient can be obtained, the surface heat transfer coefficient is related to the geometric structure of the corrugations of the heat exchange plate, and the shape of the corrugations may be the existing herringbone, straight, spherical, etc.

Example 2

As shown in fig. 4, the difference from embodiment 1 is that the included angle between the two inlet pipes 5 is β, β is 120 °, the included angle is set to 120 °, the first medium has a larger impact between the two branch mediums formed by the two inlet pipes 5, and the turbulent flow forming more disturbances enters the heat exchanger, thereby improving the heat transfer efficiency.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be construed as the protection scope of the present invention.

Claims

1. The utility model provides a spiral plate heat exchanger, includes casing (1) and is located heat transfer board (2) in casing (1), heat transfer board (2) will divide into spiral helicine first runner (3) and spiral helicine second runner (4) in casing (1), its characterized in that, first runner (3) are equipped with first import (31) and first export (32), second runner (4) are equipped with second import (41) and second export (42), be equipped with more than one import pipe (5) on first import (31).

2. A spiral plate heat exchanger according to claim 1, characterized in that the number of inlet pipes (5) is two and the angle between two inlet pipes (5) is β, 15 ° ≦ β < 180 °.

3. A spiral plate heat exchanger according to claim 1, wherein a communicating pipe (6) is connected to the inlet pipe (5), the communicating pipe comprises a main connecting pipe (61) and more than one branch pipe (62), and the branch pipes (62) are connected to the inlet pipe (5).

4. A spiral plate heat exchanger according to claim 3, wherein the branch pipes (62) are arc pipes.

5. A spiral plate heat exchanger according to claim 3, wherein a branch pipe valve (7) is provided on the branch pipe (62).

6. A spiral plate heat exchanger according to claim 1, wherein the heat exchanger plate (2) is provided with a plurality of corrugated bulges (21).