CN219200136U

CN219200136U - Square spiral plate type heat exchanger

Info

Publication number: CN219200136U
Application number: CN202222561544.8U
Authority: CN
Inventors: 唐浩; 屈毛毛; 韩劲智
Original assignee: Xiamen Ojalek Environmental Protection Technology Co ltd
Current assignee: Xiamen Ojalek Environmental Protection Technology Co ltd
Priority date: 2022-09-27
Filing date: 2022-09-27
Publication date: 2023-06-16
Anticipated expiration: 2032-09-27

Abstract

The utility model relates to the technical field of heat exchangers, in particular to a square spiral plate type heat exchanger. The technical scheme includes that the heat exchange device comprises an outer shell, an inner shell is arranged in the outer shell, a high-low temperature liquid channel separation heat exchange plate with a double-layer structure is arranged in the outer shell, a low-temperature liquid channel and a high-temperature liquid channel are separated in a region between the inner wall of the outer shell and the outer wall of the inner shell through the high-low temperature liquid channel separation heat exchange plate, a low-temperature liquid outlet and a high-temperature liquid inlet are fixedly installed on the outer wall of the outer shell, and a low-temperature liquid inlet and a high-temperature liquid outlet are fixedly installed on the inner wall of the inner shell. The heat exchanger with the square structure is adopted, the bolt type heat exchange plate is arranged in the shell, the annular winding of the double-layer square spiral heat exchange plate forms two different annular heat exchange channels, the heat exchange area in the heat exchanger can be increased under the condition of reducing the volume of the heat exchanger, the heat exchange between high-temperature liquid and low-temperature liquid is facilitated, and the heat exchange efficiency of the heat exchanger is effectively improved.

Description

Square spiral plate type heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to a square spiral plate type heat exchanger.

Background

The heat exchanger is equipment for exchanging heat of fluid, and is widely applied to industrial production, in particular to the increase of the demand of chemical industry and energy industry for heat exchange equipment. The current heat exchangers are various, but many heat exchangers can not meet the requirements of the production process. Especially, china is faced with energy conversion and upgrading, and in the process of extracting and treating organic slurry in the process of producing methane by using organic biomass energy in an anaerobic way, the temperature of the organic slurry needs to be increased from low temperature to high temperature, so that an organic slurry heat exchanger is needed to heat the organic slurry. At present, domestic heating modes are many, but the effect difference is great, the problems in the using process are many, and the production accidents are many. At present, the heating of domestic kitchen waste organic slurry mainly comprises the following three types.

The shell-and-tube heater and the sleeve-type heating heat exchanger are composed of a single or a plurality of inner tubes and an outer shell, and a return bend and the like, wherein the inner tubes are generally used for feeding low-temperature slurry, the outer tubes are used for feeding high-temperature slurry, and the organic slurry needs to be heated to about 80 ℃, so that the occupied area of the assembly is very large. Because the organic slurry has a lot of impurities, the pipeline is often blocked by scaling, and the main maintenance can not be overhauled.

The plate type rising film (falling film) heat exchanger has high heat exchange efficiency and small volume, but the heat exchanger is difficult to process and manufacture and has high material requirement.

The steam injector heats, a steam injector installed on the conveying pipeline directly injects steam into the organic slurry, and the heating mode directly injects the steam into the organic slurry, so that pollution is enlarged. While wasting a lot of water and energy.

The defects of the three heating heat exchangers are very remarkable, firstly, equipment is high in fault rate generally, maintenance is difficult, cleaning cannot be performed after scaling, and because the heat exchange area is large, the occupied site space is large, and the occupied site space is more than hundreds of square meters. Secondly, the resources are wasted, steam is injected into the organic slurry, so that pollution is enlarged, and heat in the hot water of the slurry can not be recovered in the organic slurry. And thirdly, the requirement on energy transmission in the heating process is high, and the large area of heating causes more return bends and large transmission head loss. Fourth, maintenance is difficult, and the internal structure is closed during maintenance, especially the winding on the constructional column of the spiral plate type heat exchanger requires a long time to clean.

On the basis of the three heat exchangers, a great deal of research is carried out to solve some problems of the above equipment, the traditional heat exchanger is changed into square, the structure between the spiral plates adopts the partition plates as support columns between the plates, the distance between the plates is fixed through the strip support, two different annular heat exchange channels are formed through annular winding of the double-layer square spiral plates, and the heat exchange area is enlarged by utilizing a small volume. Simultaneously, the flow of the heat exchange medium is smooth; in view of this, we propose a square spiral plate heat exchanger that increases the area of the heat exchange surface with a spiral heat exchange structure and thereby improves the heat exchange efficiency.

Disclosure of Invention

The utility model aims at solving the problems in the background technology and provides a square spiral plate type heat exchanger which increases the area of a heat exchange surface by a spiral heat exchange structure and improves the heat exchange efficiency.

The technical scheme of the utility model is as follows: the square spiral plate type heat exchanger comprises an outer shell, an inner shell is arranged in the outer shell, a high-low temperature liquid channel separation heat exchange plate with a double-layer structure is arranged in the outer shell, one end, far away from the outer shell, of the high-low temperature liquid channel separation heat exchange plate is fixedly connected with the inner shell, a low-temperature liquid channel and a high-temperature liquid channel are separated in a region between the inner wall of the outer shell and the outer wall of the inner shell through the high-low temperature liquid channel separation heat exchange plate, a low-temperature liquid outlet and a high-temperature liquid inlet are fixedly arranged on the outer wall of the outer shell, a low-temperature liquid inlet and a high-temperature liquid outlet are fixedly arranged on the inner wall of the inner shell, the low-temperature liquid outlet and the low-temperature liquid inlet are both communicated with the low-temperature liquid channel, and the high-temperature liquid inlet and the high-temperature liquid outlet are both communicated with the high-temperature liquid channel.

Preferably, a plurality of low temperature liquid passageway distance guide plates are arranged in the low temperature liquid passageway, a plurality of high temperature liquid passageway distance guide plates are arranged in the high temperature liquid passageway, the high temperature liquid passageway separation heat exchange plate of a double-layer structure is supported in the shell body through the plurality of low temperature liquid passageway distance guide plates and the high temperature liquid passageway distance guide plates, the high temperature liquid passageway separation heat exchange plate can be stably supported through the distance guide plates, and the probability of deformation of the high temperature liquid passageway separation heat exchange plate is effectively reduced.

Preferably, the high-low temperature liquid channel separation heat exchange plate with a double-layer structure is in a straight spiral shape and distributed in a section between the outer shell and the inner shell, the low-temperature liquid channel and the high-temperature liquid channel are mutually surrounded and distributed in a section between the outer shell and the inner shell, and the high-low temperature liquid channel separation heat exchange plate with a spiral structure is adopted, so that the distribution length of the heat exchange plate structure in the shell can be increased.

Preferably, the side of the high-low temperature liquid channel separating heat exchange plate, which is close to the low-temperature liquid channel and the high-temperature liquid channel, is a heat exchange surface, and the spiral heat exchange plate structure is adopted, so that the area of the heat exchange surface can be increased, and the heat exchange efficiency is improved.

Compared with the prior art, the utility model has the following beneficial technical effects: the heat exchanger with the square structure is adopted, the bolt type heat exchange plate is arranged in the shell, the annular winding of the double-layer square spiral heat exchange plate forms two different annular heat exchange channels, the heat exchange area can be increased under the condition of reducing the volume of the heat exchanger, the heat exchange between high-temperature liquid and low-temperature liquid is facilitated, and the heat exchange efficiency of the heat exchanger is effectively improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

figure 2 is a cross-sectional view of A-A of figure 1 in accordance with the present utility model.

Reference numerals: 1. an outer housing; 2. an inner housing; 3. a cryogenic liquid inlet; 4. a high temperature liquid outlet; 5. a cryogenic liquid outlet; 6. a high temperature liquid inlet; 7. a cryogenic liquid channel; 8. a high temperature liquid passage; 9. the high-low temperature liquid channel separates the heat exchange plate; 10. a low-temperature liquid channel distance guide plate; 11. the high-temperature liquid channel is fixed with a distance guide plate.

Detailed Description

The technical scheme of the utility model is further described below with reference to the attached drawings and specific embodiments.

Examples

As shown in fig. 1-2, the square spiral plate type heat exchanger provided by the utility model comprises an outer shell 1 and an inner shell 2, wherein the inner shell 2 is arranged in the middle of the outer shell 1, a high-low temperature liquid channel separation heat exchange plate 9 with a double-layer structure is fixedly assembled on the inner wall of the outer shell 1, the high-low temperature liquid channel separation heat exchange plate 9 is spirally distributed in a heat exchange interval formed between the outer shell 1 and the inner shell 2, one end of the high-low temperature liquid channel separation heat exchange plate 9 far away from the outer shell 1 is fixedly connected with the outer wall of the inner shell 2, a low-temperature liquid channel 7 and a high-temperature liquid channel 8 are separated in the heat exchange interval through the high-low temperature liquid channel separation heat exchange plate 9 with the double-layer structure, a low-temperature liquid inlet 3 and a high-temperature liquid outlet 4 are welded on the inner wall of the inner shell 2, the high-temperature liquid outlet 4 and the high-temperature liquid inlet 6 are both communicated with the inner part of the high-temperature liquid channel 8, and the low-temperature liquid inlet 3 and the low-temperature liquid outlet 5 are both communicated with the inner part of the low-temperature liquid channel 7 and are close to one side of the high-temperature liquid channel 7 and the high-temperature liquid channel 9;

further, the high-low temperature liquid channel separation heat exchange plates 9 with the double-layer structure are spirally distributed in the heat exchange interval, so that the low-temperature liquid channels 7 and the high-temperature liquid channels 8 on two sides of the spiral heat exchange plate structure are mutually wound, the two liquid channels are spirally distributed in the heat exchange interval, and the cross section area of the heat exchange plate 9 can be reduced to the minimum under the condition of prolonging the whole length of the heat exchange plate structure, so that the heat exchange plate structure is arranged in a square shell with small volume, and the volume of the heat exchanger can be reduced when the service efficiency of the heat exchanger is not affected;

further, a plurality of low-temperature liquid channel distance guide plates 10 are equidistantly arranged in the low-temperature liquid channel 7, a plurality of high-temperature liquid channel distance guide plates 11 are equidistantly distributed in the high-temperature liquid channel 8, the end parts of each low-temperature liquid channel distance guide plate 10 and each high-temperature liquid channel distance guide plate 11 are fixedly connected with the high-temperature and low-temperature liquid channel separation heat exchange plate 9, so that the high-temperature and low-temperature liquid channel separation heat exchange plate 9 can be supported, the positioning function is achieved, liquid can flow spirally along a fixed channel after entering the heat exchanger, and the heat exchange medium can flow smoothly in the heat exchanger.

In this embodiment, the low-temperature liquid is input into the low-temperature liquid channel 7 through the low-temperature liquid inlet 3, the high-temperature liquid is input into the high-temperature liquid channel 8 through the high-temperature liquid inlet 6, and the two steps are performed simultaneously, the low-temperature liquid and the high-temperature liquid entering the inside of the shell respectively flow clockwise along the low-temperature liquid channel 7 and the high-temperature liquid channel 8, the high-temperature liquid and the low-temperature liquid respectively contact with the heat exchange surface of the outer wall of the high-temperature liquid channel and the low-temperature liquid separating heat exchange plate 9 in the process, so that heat exchange can be realized, after heat of the high-temperature liquid is transferred into the low-temperature liquid, the low-temperature liquid can be heated, and the high-temperature liquid can be cooled, so that heat exchange of two liquids with temperature difference can be completed, and the heat exchange purpose of the heat exchanger is realized. The square shell is formed by the inner shell 2 and the outer shell 1, the middle part of the square shell is a position empty area, the pipeline of the low-temperature liquid inlet 3 and the pipeline of the high-temperature liquid outlet 4 can be conveniently installed, the square shell can protect the high-temperature liquid channel separation heat exchange plate 9, the low-temperature liquid channel distance guide plate 10 and the high-temperature liquid channel distance guide plate 11, the heat exchange element in the shell is prevented from being damaged by internal pressure and external force, and the protective performance of the heat exchanger is improved. The high-low temperature liquid channel separation heat exchange plate 9 with the spiral double-layer structure can form high-low temperature channels in the shell, the high-low temperature liquid channel separation heat exchange plate 9 can be installed in the square shell with small volume, the whole length of the high-low temperature liquid channel separation heat exchange plate 9 can be increased under the condition of reducing the volume of the heat exchanger, the area of a heat exchange surface can be increased, after the area of the heat exchange surface is increased, the heat exchange speed of high-temperature liquid and low-temperature liquid can be increased, and the heat exchange efficiency of the heat exchanger is effectively improved.

The above-described embodiments are merely a few preferred embodiments of the present utility model, and many alternative modifications and combinations of the above-described embodiments will be apparent to those skilled in the art based on the technical solutions of the present utility model and the related teachings of the above-described embodiments.

Claims

1. Square spiral plate type heat exchanger, including shell body (1), its characterized in that: the heat exchange device is characterized in that an inner shell (2) is arranged inside the outer shell (1), a high-low temperature liquid channel separation heat exchange plate (9) with a double-layer structure is arranged inside the outer shell (1), one end of the high-low temperature liquid channel separation heat exchange plate (9), far away from the outer shell (1), is fixedly connected with the inner shell (2), a low-temperature liquid channel (7) and a high-temperature liquid channel (8) are separated in an area between the inner wall of the outer shell (1) and the outer wall of the inner shell (2) through the high-low temperature liquid channel separation heat exchange plate (9), a low-temperature liquid outlet (5) and a high-temperature liquid inlet (6) are fixedly arranged on the outer wall of the outer shell (1), a low-temperature liquid inlet (3) and a high-temperature liquid outlet (4) are fixedly arranged on the inner wall of the inner shell (2), and the low-temperature liquid outlet (5) and the low-temperature liquid inlet (3) are all communicated with the low-temperature liquid channel (7), and the high-temperature liquid inlet (6) and the high-temperature liquid outlet (4) are all communicated with the high-temperature liquid channel (8).

2. Square spiral plate type heat exchanger according to claim 1, characterized in that the low temperature liquid channel (7) is internally provided with a plurality of low temperature liquid channel distance guide plates (10), the high temperature liquid channel (8) is internally provided with a plurality of high temperature liquid channel distance guide plates (11), the high and low temperature liquid channel separation heat exchange plates (9) with double-layer structure are supported in the outer shell (1) through the plurality of low temperature liquid channel distance guide plates (10) and the high temperature liquid channel distance guide plates (11).

3. Square spiral plate heat exchanger according to claim 1, characterized in that the high-low temperature liquid channel separation heat exchange plates (9) of double-layer structure are distributed in a straight-square spiral manner in the interval between the outer shell (1) and the inner shell (2), and the low temperature liquid channels (7) and the high temperature liquid channels (8) are mutually surrounded and distributed in the interval between the outer shell (1) and the inner shell (2).

4. A square spiral plate heat exchanger according to claim 1, wherein the sides of the high-low temperature liquid channel separating heat exchange plate (9) close to the low temperature liquid channel (7) and the high temperature liquid channel (8) are heat exchange surfaces.