CN214148928U

CN214148928U - Compact printed circuit board type heat exchanger

Info

Publication number: CN214148928U
Application number: CN202022598836.XU
Authority: CN
Inventors: 郭宏新; 刘丰; 张贤福; 刘洋; 江郡
Original assignee: Jiangsu Zhongsheng Pressure Vessel Equipment Manufacturing Co ltd
Current assignee: Jiangsu Zhongsheng Pressure Vessel Equipment Manufacturing Co ltd; Jiangsu Sunpower Technology Co Ltd
Priority date: 2020-11-11
Filing date: 2020-11-11
Publication date: 2021-09-07
Anticipated expiration: 2030-11-11

Abstract

The utility model discloses a compact printed circuit board type heat exchanger, which is applied to the field of liquefied natural gas gasification and recondensing, and is characterized in that the compact printed circuit board type heat exchanger consists of at least two kinds of plates, and heat exchange fluid channels are arranged on the plates; the heat exchange fluid channel of the first plate is a straight channel; the heat exchange fluid channel of the second plate is divided into two independent parts which are distributed at two ends of the plate, one end of the heat exchange fluid channel is a hot fluid channel, and the other end of the heat exchange fluid channel is a cold fluid channel; wherein, the hot fluid channel is provided with a hot fluid inlet and a hot fluid outlet; the cold fluid channel is provided with a cold fluid inlet and a cold fluid outlet. The invention integrates the two evaporators and the two condensers into one device, saves an intermediate fluid pump and a complex pipeline system, and greatly reduces the occupied area of the device, the processing cost and the operation energy consumption.

Description

Compact printed circuit board type heat exchanger

Technical Field

The utility model relates to a heat transfer device, concretely relates to compact printed circuit board formula heat exchanger mainly is applied to the gasification and the condensation of natural gas trade natural gas, and specially adapted boats and ships and marine floating platform etc. require harsh place to equipment fixing space and weight.

Background

Offshore natural gas development has become an important development direction in the world energy field. In general, a deep sea natural gas is produced at sea by a floating platform, liquefied on site by a floating Liquefied Natural Gas (LNG) carrier, and then unloaded to an LNG carrier. The working space of offshore floating LNG liquefaction is narrow, the sea condition environment is severe, and the main heat exchanger of the liquefaction device is required to be compact in structure, resistant to low temperature and high pressure, less in leakage, efficient and the like. The heat exchangers commonly used at present are plate fin heat exchangers and wound tube heat exchangers. The plate-fin heat exchanger has the advantages of high compactness, high heat exchange capacity, small influence of sloshing and the like, but has low mechanical strength, is easy to deform, has leakage and the like, and is difficult to ensure reliability. The coiled pipe type heat exchanger has the advantages of high pressure resistance, high reliability, easiness in maintenance and the like, but has the problems of low compactness, large volume and mass and the like. Therefore, the development of a heat exchanger with high heat exchange capacity and working stability becomes the key for ensuring the efficient and stable development of the natural gas liquefaction process.

The printed circuit plate heat exchanger can meet the requirements of high efficiency, compactness, safety and reliability at the same time, but the traditional method needs two printed circuit plate heat exchangers to realize the liquefaction or gasification of natural gas, one heat exchanger finishes the evaporation of an intermediate medium, the other heat exchanger finishes the condensation of the intermediate medium, the intermediate medium circulates between the two heat exchangers through a pump, and in the process system, the pipeline is complex and the circulation of the intermediate medium needs to consume electric energy.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art pipe-line system is complicated, the operation power consumption, the utility model aims at providing a compact printed circuit board heat exchanger. The utility model provides a compact printed circuit board heat exchanger will be originally two evaporimeters and condenser reduction and be an equipment, has saved middle fluid pump and complicated pipe-line system, has reduced device area, manufacturing cost and operation energy consumption greatly.

The utility model discloses a solve above-mentioned technical problem not enough, the technical scheme who adopts is:

a compact printed circuit board type heat exchanger is composed of at least two kinds of plates, wherein the plates are alternately arranged in an aligned mode, and heat exchange fluid channels are arranged on the plates; the heat exchange fluid channel of the first plate is a straight channel, and intermediate fluid such as propane, ethylene glycol, ammonia and the like is filled in the channel; the heat exchange fluid channel of the second plate is divided into two independent parts which are distributed at two ends of the plate, one end of the heat exchange fluid channel is a hot fluid channel, and the other end of the heat exchange fluid channel is a cold fluid channel; wherein, the hot fluid channel is provided with a hot fluid inlet and a hot fluid outlet; the cold fluid channel is provided with a cold fluid inlet and a cold fluid outlet.

As a preferred solution of the present application, the plates are joined as a whole by diffusion welding.

As a preferred technical scheme of the application, one end of the straight channel is provided with a communicating channel, and the other end is provided with a fluid filling channel; when the device works, the straight channel is isolated from the outside, the device is vertically placed or obliquely placed along the direction of the straight channel, and the inclination angle is not less than 10 degrees when the device is obliquely placed; the end provided with the communicating channel is positioned at the lower part.

Preferably, the end provided with the fluid-filling channel is provided with a fluid-filling connection.

As a preferred solution of the present application, the two-part heat exchange fluid channels of the second plate are continuous channels and/or discontinuous channels.

Preferably, the channel is any one of a straight channel, a Z-shaped channel, a U-shaped channel or an L-shaped channel.

Preferably, the channel can be a channel with other shapes.

Preferably, the cross section of the fluid channel is any one or combination of a circle, a semicircle, a semiellipse, a rectangle and a triangle.

As a preferred technical scheme of the application, the cold fluid inlet is provided with a cold fluid inlet header; the cold fluid outlet is provided with a cold fluid outlet header; the hot fluid inlet is provided with a hot fluid inlet header, and the hot fluid outlet is provided with a hot fluid outlet header.

As a preferred technical scheme of the application, the filling amount of the fluid in the straight channel is 5-40% of the total volume of the straight channel.

The utility model provides a compact printed circuit board heat exchanger will be originally two evaporimeters and condenser reduction and be an equipment, has saved middle fluid pump and complicated pipe-line system, has reduced device area, manufacturing cost and operation energy consumption greatly.

Drawings

FIG. 1 is a schematic view of a first plate straight channel of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

fig. 3 is a schematic view of a second sheet of the invention;

FIG. 4 is a schematic view of another embodiment of a second sheet of the present invention;

fig. 5 is an overall schematic view of a compact printed circuit plate heat exchanger according to the present invention;

wherein, 1-a first plate; 2-a second type of plate; 3-a third sheet; 4-a straight channel; 5-a communication channel; 6-a cold fluid channel; 7-a hot fluid channel; 8-a continuous channel; 9-a discontinuous channel; 10-a fluid-filled joint; 11-cold fluid inlet header; 12-a cold fluid inlet; 13-hot fluid inlet; 14-hot fluid inlet header; 15-cold fluid outlet header; 16-a cold fluid outlet; 17-hot fluid outlet; 18-hot fluid outlet header; 19-fluid filling channel.

Detailed Description

In order to make the content of the present invention more clearly understood, the present invention will be described in further detail with reference to the following embodiments. The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Example 1

Fig. 1-5 show a specific embodiment of the present invention, wherein fig. 5 is a schematic diagram of the overall structure of a compact printed circuit plate heat exchanger according to the present invention. Referring to fig. 1-5, a compact printed circuit plate heat exchanger is comprised of two plates with heat exchange fluid channels formed therein by chemical etching or other processing.

The heat exchange fluid channel on the first plate 1 is a straight channel 4, the straight channel 4 is filled with intermediate fluid such as propane, glycol, ammonia and the like, the filling amount of the fluid is 5% -40% of the volume of the straight channel, the fluid is isolated from the outside during working, one end of the straight channel 4 is provided with a communicating channel 5, the other end of the straight channel is provided with a fluid filling channel 19, one end provided with the fluid filling channel 19 is provided with a fluid filling joint 10, and the joint is closed after the intermediate fluid is filled.

Referring to fig. 3, the channels of the second plate 2 are divided into two independent parts which are not communicated with each other and distributed at two ends of the plate, one end of each channel is a hot fluid channel 7, the other end of each channel is a cold fluid channel 6, and the channels can be continuous straight channels, Z-shaped channels or continuous channels with other shapes; the third plate 3 shown in figure 4 is another version of the second plate 2 in which one end is a continuous channel 8 and the other end is a discontinuous channel 9. The cross section of the heat exchange fluid channel can be in the shapes of circle, semicircle, semiellipse, rectangle, triangle and the like. A cold fluid inlet header 11 and a cold fluid outlet header 15 are respectively arranged at the cold fluid inlet 12 and the cold fluid outlet 16, and a hot fluid inlet header 14 and a hot fluid outlet header 18 are respectively arranged at the hot fluid inlet 13 and the hot fluid outlet 17. The first plate 1 and the second plate 2 are aligned and overlapped and are connected into a whole by means of diffusion welding.

When the device works, the device is vertically or obliquely arranged along the direction of the straight channel, one end provided with the communicating channel 5 is positioned at the lower part, and the inclination angle is not smaller than 10 degrees when the device is obliquely arranged; the intermediate fluid is heated and evaporated by the hot fluid to be changed into a gaseous state, and the gaseous intermediate medium flows to the other end of the plate through the straight channel; the cold fluid at the other end of the plate exchanges heat with the plate to condense the gaseous intermediate fluid into a liquid state, and the liquid intermediate medium returns to the hot fluid side under the action of gravity or capillary vessels, so that the heat is transferred from the hot fluid to the cold fluid through the continuous evaporation and condensation of the intermediate medium.

In the embodiment, two evaporators and two condensers in the prior art are integrated into one device, so that a middle fluid pump and a complex pipeline system are omitted, and the occupied area, the manufacturing cost and the operation energy consumption of the device are greatly reduced.

The technical solution and the embodiments listed in the present invention are not limited, and the technical solution and the embodiments listed in the present invention are equivalent or have the same effect.

Claims

1. A compact printed circuit board type heat exchanger is characterized by comprising at least two kinds of plates, wherein the two kinds of plates are alternately arranged in an aligned manner, and heat exchange fluid channels are arranged on the plates; the heat exchange fluid channel of the first plate (1) is a straight channel (4); the heat exchange fluid channel of the second plate (2) is divided into two independent parts which are distributed at two ends of the plate, one end of the heat exchange fluid channel is a hot fluid channel (7), and the other end of the heat exchange fluid channel is a cold fluid channel (6); wherein the hot fluid channel (7) is provided with a hot fluid inlet (13) and a hot fluid outlet (17); the cold fluid channel is provided with a cold fluid inlet (12) and a cold fluid outlet (16).

2. A compact printed circuit plate heat exchanger according to claim 1, wherein the plates are joined as a unit by diffusion welding.

3. A compact printed circuit plate heat exchanger according to claim 1, characterized in that the straight channel (4) is provided with a communication channel (5) at one end and a fluid filling channel (19) at the other end.

4. A compact printed circuit plate heat exchanger according to claim 3, characterized in that the end of the straight channel (4) provided with the fluid-filled channel is provided with a fluid-filled joint (10).

5. A compact printed circuit plate heat exchanger according to claim 1, characterized in that the two part heat exchange fluid channels of the second plate type (2) are continuous channels and/or discontinuous channels.

6. A compact printed circuit plate heat exchanger according to claim 5, wherein the channels are any one or more of straight channels, Z-channels, U-channels or L-channels.

7. A compact printed circuit plate heat exchanger according to claim 5, wherein the fluid channel cross-section is any one or combination of circular, semi-elliptical, rectangular, triangular.

8. A compact printed circuit plate heat exchanger according to claim 1, characterized in that the cold fluid inlet (12) is provided with a cold fluid inlet header (11) and the cold fluid outlet (16) is provided with a cold fluid outlet header (15); the hot fluid inlet (13) is provided with a hot fluid inlet header (14), and the hot fluid outlet (17) is provided with a hot fluid outlet header (18).

9. A compact printed circuit plate heat exchanger according to claim 1, characterized in that the filling of the fluid in the straight channel (4) is 5-40% of the total volume of the straight channel.