CN205279807U - Compound heat exchanger of three media of worm formula - Google Patents

Abstract

The utility model relates to a heat exchange device, in particular to a snake-tube type three-medium composite heat exchanger. The middle core body, the medium outlet and the medium inlet, the outer fixed square shell of the middle core body, the middle core body includes the first dielectric core body, the second dielectric core body, the first dielectric core body and the second dielectric core body are cross-connected, The square housing includes an upper cover, a right cover, a left cover and a lower cover, and the upper cover, the right cover, the left cover and the lower cover are respectively fixed on the outside of the middle core; the utility model The beneficial effect is: simple structure, easy to assemble, disassemble and clean; two ports of each snake pipe are respectively connected to the liquid collection pipe, and the pipe body part can be freely expanded and contracted, which can relieve part of the thermal stress problem.

Description

A snake-tube type three-medium compound heat exchanger

technical field

The utility model relates to a heat exchanging device, in particular to a snake tube type three-medium compound heat exchanger.

Background technique

Heat exchange equipment is one of the most widely used unit equipment in chemical, petroleum, energy and other industries. With the rapid development of production, more and more fields need to realize the compound heat exchange of three media: for example, solar water supply system needs heat sources in different states to heat cooling water, waste heat recovery of two products at the same time in industrial production, and water Steam heats two media at the same time, etc. At present, most of the heat exchangers widely used in production can only realize the heat exchange between two media, which not only limits the production development, but also causes too much industrial equipment required in the production line, and the production line is too long, resulting in the waste of resources and energy, which is not conducive to the industry. burden reduction and economic development.

Due to the market demand for new chemical equipment and the development trend of complexity and efficiency, the three-medium composite heat exchanger has received more and more attention. There are not many published three-medium composite heat exchangers, including finned and tube-type composite heat exchangers (Chinese patent "2007100548798"), shell-and-tube three-media composite heat exchangers (Chinese patent "200810049237.3"), brazing Welded plate three-medium compound heat exchanger (Chinese patent "201010106178.6"), tube-fin three-medium heat exchange device (Chinese patent "2014207549937") and U-shaped shell-and-tube three-medium compound heat exchanger (Chinese patent "2014208636792") Wait. For the tube-and-tube composite heat exchanger, the heat transfer efficiency of the medium in the inner casing is not high, and it is difficult to install and clean; the plate-type composite heat exchanger has a small bearing pressure, a complex structure, and high production costs; the tube-fin three-media heat exchange device It is only proposed as a concept, but the complete heat exchanger structure has not been realized, and its structure is complex, making it difficult to manufacture and process; U-shaped shell-and-tube three-media composite heat exchanger is difficult to assemble, disassemble and repair. When the tube leaks and is damaged, only the outermost The first layer of tubes can be replaced, and the other tubes can only be blocked, which will reduce the heat transfer area. Therefore, it is urgent to propose a three-medium composite heat exchanger with compact structure, high unit heat transfer area, suitable for high temperature and high pressure, and easy to assemble, disassemble and clean.

Contents of the invention

The purpose of this utility model is to aim at the above-mentioned defects existing in the prior art, and to provide a snake-tube type three-medium compound that can realize three-medium synchronous heat exchange, has a compact structure, a high heat transfer area per unit volume, is suitable for high temperature and high pressure, and is easy to assemble and disassemble. Heat Exchanger.

Its technical solution is: a snake-tube type three-medium composite heat exchanger mentioned in the utility model, including a square shell and an intermediate core, a medium outlet and a medium inlet, the outer fixed square shell of the intermediate core, and the intermediate core It includes a first dielectric core and a second dielectric core. The first dielectric core and the second dielectric core are respectively composed of multiple groups of snake tubes. The first dielectric core and the second dielectric core are cross-connected. The square shell The body includes an upper cover, a right cover, a left cover, and a lower cover, and the upper cover, the right cover, the left cover, and the lower cover are respectively fixed on the outside of the middle core, and the first dielectric core Connect the first medium inlet header and the first medium outlet header, the second medium core connects the second medium inlet header and the second medium outlet header, and the right cover is provided with a third The medium inlet, the first medium inlet, and the second medium outlet. The left cover plate is provided with the second medium inlet, the third medium outlet and the first medium outlet. One end of the inlet header of the first medium is closed, and the other end is closed. It is connected with the first medium inlet on the right cover; one end of the outlet header of the first medium is closed, and the other end is connected with the first medium outlet on the left cover; one end of the inlet header of the second medium is closed, and the other end is connected to the left The inlet of the second medium on the cover plate is connected; one end of the outlet header of the second medium is closed, and the other end is connected to the outlet of the second medium on the right cover plate.

The inlet directions of the above-mentioned first dielectric core body and the second dielectric core body are opposite.

The above-mentioned first dielectric core body and the second dielectric core body consist of a coiled tube, which increases the heat exchange area and heat exchange efficiency.

The beneficial effects of the utility model are: 1) the structure is simple, easy to assemble, disassemble and clean; 2) the two ports of each serpentine pipe are respectively connected to the liquid collecting pipe, and the pipe body can be freely expanded and contracted, which can alleviate some thermal stress problems; 3) ) The two kinds of media go through independent tube bundles, with high bearing pressure, which is suitable for heat exchange of high-temperature and high-pressure media; 4) Two sets of tube bundles are placed crosswise, with uniform heat transfer and high thermal efficiency, which can realize heat exchange between two media and three media Synchronous heat exchange.

Description of drawings

Accompanying drawing 1 is the overall structure figure of the utility model;

Accompanying drawing 2 is a top view of the first dielectric core and the second dielectric core;

Accompanying drawing 3 is a side view of the first dielectric core and the second dielectric core;

Accompanying drawing 4 is a single snake pipe structure diagram;

In the above figure: upper cover plate 1, second medium inlet header 2a, second medium outlet header 2b, third medium inlet 3, first medium inlet 4, second medium outlet 5, right cover plate 6, Second medium inlet 7, first medium inlet header 8a, first medium outlet header 8b, third medium outlet 9, first medium outlet 10, left cover 11, lower cover 12, first medium core Body 13, second dielectric core 14.

detailed description

In conjunction with accompanying drawing 1-4, the utility model is further described:

A snake-tube type three-medium composite heat exchanger mentioned in the utility model includes a square shell and an intermediate core, a medium outlet and a medium inlet, the outer fixed square shell of the intermediate core, and the intermediate core includes a first dielectric core body 13, the second dielectric core 14, the first dielectric core 13, and the second dielectric core 14 are respectively composed of multiple groups of snake tubes, the first dielectric core 13 and the second dielectric core 14 are cross-connected, and the square The housing includes an upper cover 1, a right cover 6, a left cover 11, and a lower cover 12, and the upper cover 1, the right cover 6, the left cover 11, and the lower cover 12 are respectively fixed on the outside of the middle core , the first medium core 13 is connected to the first medium inlet header 8a and the first medium outlet header 8b, and the second medium core 14 is connected to the second medium inlet header 2a, the second medium outlet header Flow pipe 2b, the third medium inlet 3, the first medium inlet 4, and the second medium outlet 5 are arranged on the right cover plate 6, and the second medium inlet 7, the third medium outlet 9 and First medium outlet 10, one end of the inlet header 8a of the first medium is closed, and the other end is connected to the first medium inlet 4 on the right cover plate; one end of the outlet header 8b of the first medium is closed, and the other end is connected to the first medium inlet 4. The outlet 9 of the first medium on the left cover is connected; the inlet header 2a of the second medium is closed at one end, and the other end is connected with the second medium inlet 7 on the left cover; the outlet header 2b of the second medium is closed at one end, and One end is connected with the second medium outlet 5 on the right cover plate.

Wherein, the inlet directions of the first dielectric core body 13 and the second dielectric core body 14 are opposite.

In addition, the serpentine tube composed of the first dielectric core 13 and the second dielectric core 14 is bent, which increases the heat exchange area and heat exchange efficiency, and the tube part can be freely expanded and contracted.

The working principle of the utility model is:

When the new coiled tube type three-medium composite heat exchanger is working, a medium flows in from the first medium inlet 4 on the right end cover plate, enters the first medium inlet header 8a, flows into the first medium core 13, and enters the second medium after heat exchange. A medium outlet header 8b flows out from the first medium outlet 10 of the left end cover plate. Another medium flows in from the second medium inlet 7 on the left end cover, enters the second medium inlet header 2a, flows into the second medium core 14, enters the second medium outlet header 2b after heat exchange, and flows from the right end cover The second medium outlet 5 of the plate flows out, and the third medium flows in from the third medium inlet 3 on the right end cover plate, flows in the space formed by the square shell, exchanges heat with the medium in the coiled tube core body, and flows from the left end cover plate The upper third medium outlet 9 flows out. In this way, synchronous heat exchange of three different media is realized.

The above are only preferred embodiments of the present utility model, and any person skilled in the art may use the above-mentioned technical solutions to modify the present utility model or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solution of the utility model belongs to the protection scope of the utility model.

Claims (3)

1. a coil pipe type three mediums composite heat-exchanger, is characterized in that: include square casing, middle core body, media outlet and medium inlet, the external stability square casing of middle core body, middle core body includes first medium core body (13), second medium core body (14), first medium core body (13), second medium core body (14) forms by organizing coiled pipe respectively, first medium core body (13) and second medium core body (14) interconnection, and described square casing includes upper cover plate (1), right cover plate (6), left cover (11), lower cover (12), upper cover plate (1), right cover plate (6), left cover (11), lower cover (12) is separately fixed at the outside of middle core body, described first medium core body (13) connects first medium inlet collecting (8a) and first medium outlet collection pipe (8b), and second medium core body (14) connects second medium inlet collecting (2a), second medium outlet collection pipe (2b), described right cover plate (6) is provided with the 3rd medium inlet (3), first medium entrance (4), second medium outlet (5), left cover is provided with second medium entrance (7), 3rd media outlet (9) and first medium outlet (10), inlet collecting (8a) one end of described first medium is closed, and other end is connected with first medium entrance (4) on right cover plate, outlet collection pipe (8b) one end of first medium is closed, and other end is connected with first medium outlet (9) on left cover, inlet collecting (2a) one end of second medium is closed, and other end is connected with second medium entrance (7) on left cover, outlet collection pipe (2b) one end of second medium is closed, and other end is connected with second medium outlet (5) on right cover plate.

2. a kind of coil pipe type three mediums composite heat-exchanger according to claim 1, is characterized in that: described first medium core body (13) and the Way in of second medium core body (14) are contrary.

3. a kind of coil pipe type three mediums composite heat-exchanger according to claim 1, is characterized in that: described first medium core body (13) and the composition coiled pipe of second medium core body (14) are bending.