CN215177125U - Film heat exchange plate bundle and heat exchanger - Google Patents

Abstract

The utility model provides a film heat exchange plate bundle and heat exchanger, the heat exchange plate bundle includes first rete and second rete, first rete with form a plurality of membrane bag through the weld part between the second rete the inside of membrane bag with the outside of membrane bag forms medium channel one and medium channel two respectively, medium in the medium channel one with the medium of medium channel two can carry out the heat exchange. Flexible polymer film heat transfer board bunch and heat exchanger, the cost is cheaper, the assembly is simpler, heat transfer performance is more excellent, be applicable to the heat transfer needs in a plurality of fields such as energy chemical industry, air conditioning, exhaust-gas treatment, have high market perspective.

Description

Film heat exchange plate bundle and heat exchanger

Technical Field

The utility model relates to a indirect heating equipment technical field, in particular to film heat transfer board is restrainted and heat exchanger.

Background

In general, a heat exchanger is a device that passively transfers heat from one medium to another. The medium is typically a liquid or a gas. The heat exchanger does work according to the following laws of thermodynamics: when the object is heated, the thermal energy contained within the object will diffuse out into the surrounding environment until equilibrium has been reached between the object and the environment. Heat exchangers have a variety of uses including, but not limited to, space heating, refrigeration, air conditioning, heat transfer in power plants, chemical plants, petrochemical plants, oil refineries, natural gas processing, and sewage treatment.

The basic heat exchanger design typically involves two chambers or channels separated by a partition. A medium containing heat energy to be transferred passes through one channel, and a medium capable of receiving heat energy passes through the other channel. The media may also flow co-currently or counter-currently. Heat diffuses between the two media by passing through the separator until the rate of heat transfer matches the rate of thermal energy transfer. The type and size of the heat exchanger used depends on the type of material used as the separator and various properties of the media introduced, including their phase, temperature, density, viscosity, pressure, chemical composition and various other characteristics.

The two most common types of heat exchangers are shell and tube heat exchangers and plate and frame heat exchangers. Other types of heat exchangers include, but are not limited to, adiabatic wheel heat exchangers, plate fin heat exchangers, fluid heat exchangers, waste heat recovery units, dynamic scraped surface heat exchangers, phase change type heat exchangers, direct contact heat exchangers, air coils, and spiral heat exchangers.

The traditional heat exchanger is made of metal materials, such as carbon steel, 304, 316L, 2205 titanium materials and the like, and the adoption of the materials has the problems of heavy equipment, high manufacturing cost and easy corrosion.

Compared with metal materials, the polymer material has the following advantages:

1. light weight and small material consumption per unit heat exchange area.

2. High surface smoothness and no scaling.

3. The processing and manufacturing process is simple, and full-automatic production is easy to realize.

4. Easy modularized design, reduced field installation welding workload, and guaranteed quality.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a film heat exchange plate bundle and heat exchanger that energy-concerving and environment-protective, low cost, security are high, are particularly useful for gas-gas heat transfer.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a film heat exchange plate bundle comprises a first film layer and a second film layer, a plurality of film bags are formed between the first film layer and the second film layer through welding portions, a first medium channel and a second medium channel are formed in the film bags and outside the film bags respectively, and a medium in the first medium channel and a medium in the second medium channel can exchange heat.

Thin film heat transfer board bunch, energy-concerving and environment-protective, low cost, fail safe nature is good, utilizes the heat transfer board that polymer membrane bag preparation formed to restraint, the surface area of membrane bag is bigger with the volume, has characteristics such as fine intensity, temperature resistant, moisture-proof, corrosion-resistant and gas tightness, compact structure, heat exchange efficiency is high, has market spreading value.

Preferably, the area of the welding connection part of the first film layer and the second film layer and the area ratio of the first film layer/the second film layer are in the range of 0.001-0.5.

The arrangement ensures the stability of the fixed connection between the row of the film bag and the two film layers, avoids the film bag from being worn or stacked due to the fact that the film bag is too large to be partially deformed when in use, and ensures the heat exchange effect and the reliability of heat exchange.

Preferably, the first film layer and the second film layer are welded and connected through a tie bar.

Preferably, a plurality of welding strips are arranged between the first film layer and the second film layer, and the adjacent welding strips are arranged in parallel.

Preferably, the first film layer and the second film layer are connected through a plurality of welding strips in a welding mode, and a plurality of strip-shaped channels are formed between the first film layer and the second film layer in a welding mode.

Preferably, the value range of the ratio of the distance between two adjacent welding strips to the length of the first film layer/the second film layer is not more than 0.3, and/or the value range of the ratio of the distance between two adjacent welding strips to the width of the first film layer/the second film layer is not more than 0.3.

Preferably, the first film layer and the second film layer are connected through a plurality of welding points in a welding mode.

Preferably, a plurality of welding points are arranged in a linear mode, and a plurality of rows of welding points are distributed in a matrix mode; or a plurality of welding points are arranged in a linear mode, and lines formed by connecting the welding points in two adjacent rows are arranged in a staggered mode.

This set up the scheme that welded connection becomes the plate bundle between two disclosed retes, compact structure, easily production connects reliably, avoids the membrane bag to lead to the fact to connect not hard up owing to rocking in the heat transfer process.

Preferably, the first film layer and/or the second film layer and/or the tie bar are made of a flexible polymer material, and the flexible polymer material includes any one or more of FEP, PTFE, PFA, PP, and PVC.

The film bag and/or the lacing wire prepared by combining any one or more of FEP, PTFE, PFA, PP, PVC and other materials have low cost and excellent surface bonding strength and heat transfer performance, and meet the gas-gas heat exchange requirement within 200 ℃.

The utility model provides a heat exchanger, includes that a plurality of above-mentioned film heat exchange plate restraints, through connecting device fixed connection between two adjacent heat exchange plate restraints, a plurality of film heat exchange plate restraints form membrane heat exchanger core the outside of membrane heat exchanger core sets up shrouding and connecting rod, two the shrouding sets up the both sides of connecting rod, heat exchange plate restraints through first connecting portion and angle seal membrane welded connection, the opposite side of angle seal membrane with the connecting rod is connected, heat exchange plate restraints through first rete the second rete can be dismantled with the shrouding and be connected.

The heat exchanger of this form, the structure is simpler, and the cost is cheaper, through being connected of a plurality of flexible film and angle sealing membrane and shrouding, has both guaranteed between the membrane bag and the stability that flexible polymer film heat transfer board restrainted the connection, has improved the intensity of junction again, avoids the membrane bag because the stress deformation or the damage that the connection caused, has further improved the reliability that flexible polymer film heat transfer board restrainted the use.

Compared with the prior art, film heat exchange plate bundle and heat exchanger have following advantage:

(1) flexible polymer film heat transfer board bundle, the cost is cheaper, the assembly is simpler, is applicable to the heat transfer needs in a plurality of fields such as energy chemical industry, air condition, exhaust-gas treatment.

(2) Flexible polymer film heat transfer board bunch and heat exchanger, compact structure, heat exchange efficiency is higher, corrosion-resistant and deposition not when using have high market perspective.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a heat exchanger according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second view angle of the heat exchanger according to the embodiment of the present invention;

FIG. 3 is a schematic structural view of a first membrane heat exchanger core of the present invention;

FIG. 4 is a schematic cross-sectional view of A-A of FIG. 3;

FIG. 5 is a schematic view of a first membrane heat exchanger core of the present invention showing a heat exchanger plate bundle;

FIG. 6 is a schematic top view of the heat exchanger plate bundle shown in FIG. 5;

FIG. 7 is a schematic cross-sectional view of B-B in FIG. 6;

FIG. 8 is a schematic diagram of the membrane bag of the bundle of heat exchange plates shown in FIG. 5 in a transverse orientation;

FIG. 9 is a schematic right-side view of the structure of FIG. 8;

FIG. 10 is a schematic structural view of a second membrane heat exchanger core of the present invention;

FIG. 11 is a schematic cross-sectional view of C-C of FIG. 10;

FIG. 12 is a schematic diagram of a second membrane heat exchanger core of the present invention showing a bundle of heat exchange plates;

FIG. 13 is a schematic top view of the heat exchanger plate bundle of FIG. 12;

FIG. 14 is a schematic cross-sectional view of D-D of FIG. 13;

FIG. 15 is a schematic view of the membrane bag of the bundle of heat exchange plates shown in FIG. 12 in a transverse orientation;

FIG. 16 is a schematic right-side view of the structure of FIG. 15;

FIG. 17 is a schematic structural view of a third membrane heat exchanger core of the present invention;

FIG. 18 is a schematic cross-sectional view of E-E of FIG. 17;

FIG. 19 is a schematic view of a bundle of heat exchange plates in a third membrane heat exchanger core according to the present invention;

FIG. 20 is a schematic cross-sectional view of F-F in FIG. 19;

FIG. 21 is a schematic structural view of the heat exchanger plate bundle of FIG. 19 with the welding points being staggered;

description of reference numerals:

the heat exchanger comprises a heat exchanger 100, a membrane heat exchanger core 1, a first flow channel 2, a heat exchange plate bundle 3, a first membrane layer 301, a second membrane layer 302, a membrane bag 303, a connecting device 4, a first medium channel 5, a second medium channel 6, a tie bar 7, a first connecting part 8, a second connecting part 9, a welding strip 10, a welding point 11, a corner sealing membrane 12, a connecting rod 13 and a sealing plate 14.

Detailed Description

In order to make the technical means and the objectives and functions of the present invention easy to understand, the embodiments of the present invention will be described in detail with reference to the specific drawings.

It should be noted that all terms used in the present invention for directional and positional indication, such as: the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "top", "lower", "transverse", "longitudinal", "center", etc. are used only for explaining the relative positional relationship, connection conditions, etc. between the respective members in a certain specific state (as shown in the drawings), and are only for convenience of description of the present invention, and do not require that the present invention must be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Example 1

The utility model discloses a film heat exchange plate bundle, heat exchange plate bundle 3 includes first rete 301 and second rete 302, first rete 301 with form a plurality of membrane bag 303 through the weld part between the second rete 302 the inside of membrane bag 303 with the outside of membrane bag 303 forms medium channel 5 and medium channel two 6 respectively, medium in the medium channel 5 with the medium of medium channel two 6 can carry out the heat exchange.

Film heat transfer board bundle, the metal sheet among the prior art is replaced to the membrane bag 303 that utilizes two-layer rete to weld into, form one deck heat transfer board bundle through linking together a plurality of membrane bag 303, and form medium channel two 6 between each membrane bag 303, be formed with medium channel one 5 in membrane bag 303, carry out the heat exchange between the different medium in medium channel two 6 and medium channel one 5, adjacent two-layer connection between the film heat transfer board bundle can be through welding, processes such as bonding are connected, form medium channel two 6 into a whole runner after two-layer flexible polymer film heat transfer board bundle connects, be used for realizing by heat transfer medium's inflow or outflow.

Thin film heat transfer board bunch, energy-concerving and environment-protective, low cost, fail safe nature is good, utilizes the heat transfer board that polymer membrane bag preparation formed to restraint, the surface area of membrane bag is bigger with the volume, has characteristics such as fine intensity, temperature resistant, moisture-proof, corrosion-resistant and gas tightness, compact structure, heat exchange efficiency is high, has market spreading value.

Preferably, as an example of the present invention, the first film layer 301 and/or the second film layer 302 are made of a flexible polymer material.

As an example of the present invention, the area of the welding connection portion between the first film layer 301 and the second film layer 302 and the area ratio of the first film layer 301/the second film layer 302 are in the range of 0.001-0.5.

As a preferred example of the present invention, the flexible polymer material is any one or more of FEP (fluorinated ethylene propylene copolymer), PTFE (polytetrafluoroethylene), PFA (copolymer of a small amount of perfluoropropyl perfluorovinyl ether and polytetrafluoroethylene), PP (polypropylene plastic), PVC (polyvinyl chloride), etc., and this arrangement makes the flexible polymer film heat exchange plate bundle of the present invention suitable for heat exchange within 200 ℃.

Preferably, the flexible polymer film heat exchange plate bundle of the utility model is used for gas-gas heat exchange between 50 ℃ and 200 ℃, namely, gas flows through the medium channel II 6 and the medium channel I5 independently.

Research shows that the organic high molecular polymer has very low surface energy, especially fluorine-containing plastics. However, as is well known, because the flexible polymer film has a certain ductility, if the heat exchange plate bundle formed by the flexible polymer film is used, the film bag is deformed due to the medium flowing, and the film bag is likely to be abraded or stacked, so that the medium channel is blocked or penetrated, and the heat exchange effect is affected. How to form the flexible polymer film into the film bag 303 which is provided with the first medium channel 5 and the second medium channel 6 and can reliably exchange heat is a technical problem which is difficult to overcome by the technical personnel in the field.

As an example of the present invention, as shown in fig. 3 to 9, the first film layer 301 and the second film layer 302 are welded together by a tie bar 7.

The first film layer 301 and the second film layer 302 are connected into a cavity of the film bag 303 through the tie bars 7, so as to form a flow channel of the first medium channel 5, and the tie bars 7 have the function of connecting the first film layer 301 and the second film layer 302 into a whole, and simultaneously prevent the deformation of the film bag 303 caused by the medium in the first medium channel 5 flowing.

As an example of the present invention, a plurality of welding bars 10 are disposed between the first film layer 301 and the second film layer 302, and adjacent to each other, the welding bars 10 are disposed in parallel.

As an example of the present invention, the welding strip 10 is arranged intermittently.

The arrangement avoids that the film bag 303 of the heat exchange plate bundle formed by welding the first film layer 301 and the second film layer 302 through the tie bars 7 is too large in result, so that the film bag 303 is too large in deformation when the heat exchange medium flows through the first medium channel 5 and/or the second medium channel 6.

As an example of the present invention, as shown in fig. 10 to 16, the first film layer 301 and the second film layer 302 are connected by welding via a plurality of welding bars 10.

In the arrangement, a plurality of strip-shaped channels are formed by welding the first film layer 301 and the second film layer 302 through the welding strips 10.

As an example of the present invention, the distance between two adjacent welding bars 10 and the value range of the length ratio of the first film layer 301/the second film layer 302 are not more than 0.3, and/or the distance between two adjacent welding bars 10 and the value range of the width ratio of the first film layer 301/the second film layer 302 are not more than 0.3.

The arrangement avoids overlarge strip-shaped channels, ensures that the shape of the membrane bag 303 is stable when the first medium channel 5 and/or the second medium channel 6 flow heat exchange media, and heat exchange is reliable.

As an example of the present invention, as shown in fig. 17 to 21, the first film layer 301 and the second film layer 302 are welded and connected by a plurality of welding points 11.

Preferably, the plurality of welding points 11 are arranged in a linear manner, and lines formed by connecting the welding points 11 in two adjacent rows are arranged in parallel.

Or, a plurality of welding points 11 are arranged in a linear manner, and the lines formed by connecting the welding points 11 in two adjacent rows are arranged in a staggered manner.

This setting has further guaranteed first rete 301 with the stability of second rete 302 welding formation membrane bag 303 when using, avoids first rete 301 with second rete 302 is connected not hard up and leads to local deformation too big influence heat transfer effect.

The film bag 303 and/or the tie bar 7 which are/is prepared by combining any one or more of FEP, PTFE, PFA, PP, PVC and other materials have low cost and excellent surface bonding strength and heat transfer performance, and meet the gas-gas heat exchange requirement within 200 ℃.

As an example of the present invention, the heat exchange plate bundle 3 is a rectangular arrangement, the relative sides of the heat exchange plate bundle 3 are provided with the first connecting portions 8, the other relative sides of the heat exchange plate bundle 3 are provided with the second connecting portions 9, the first connecting portions 8 and/or the second connecting portions 9 are provided for the detachable connection of the heat exchange plate bundle 3.

Example 2

The utility model also discloses a heat exchanger, heat exchanger 100 includes the membrane heat exchanger core 1 that 3 formation were restrainted to a plurality of heat transfer plate.

As an example of the present invention, as shown in fig. 1 to 21, two adjacent heat exchange plate bundles 3 are fixedly connected through a connecting device 4, the connecting device 4 and the tie bar 7 may adopt the same structure or material, and may also adopt different structures and/or different materials, a first flow channel 2 is formed in the two adjacent heat exchange plate bundles 3, and the first flow channel 2 is used for the medium in the medium channel two 6 to flow through. This setting is avoided heat transfer plate to restraint 3 to produce when using because the medium of medium passageway two 6 flows and is rocked, guarantees the heat transfer effect of heat exchanger.

As an example of the present invention, the heat exchanger includes a sealing plate 14 and a connecting rod 13, two sealing plates 14 are disposed on two sides of the connecting rod 13 to form a framework for placing the membrane heat exchanger core 1, the heat exchange plate bundle 3 is welded to the corner sealing membrane 12 through the first connecting portion 8, the other side of the corner sealing membrane 12 is connected to the connecting rod 13, the heat exchange plate bundle 3 is connected to the first membrane layer 301 and/or the second membrane layer 302 and/or the second connecting portion 9 is detachably connected to the sealing plate 14. For example, the connection mode can be any one or combination of a plurality of connection modes such as bonding, clamping connection, bolt connection and the like.

The arrangement further ensures the reliability of the film heat exchanger core 1 fixed in the heat exchanger, and further improves the working stability of the heat exchanger.

As a preferred example of the present invention, the corner sealing film 12 and the membrane heat exchanger core 1 are connected by four corner welds, the two outermost layers of the heat exchange films of the sealing plates 14 and the membrane heat exchanger core 1 are connected, and the membrane heat exchanger core 1 is pulled and supported by the two sealing plates 14 and fixed in the structural frame.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A thin film heat exchange plate bundle is characterized in that the heat exchange plate bundle (3) comprises a first film layer (301) and a second film layer (302), a plurality of film bags (303) are formed between the first film layer (301) and the second film layer (302) through welding portions, a first medium channel (5) and a second medium channel (6) are formed inside the film bags (303) and outside the film bags (303), and a medium in the first medium channel (5) and a medium in the second medium channel (6) can exchange heat.

2. The membrane heat exchange plate bundle of claim 1, wherein the ratio of the area of the welded connection of the first membrane layer (301) and the second membrane layer (302) to the area of the first membrane layer (301)/the second membrane layer (302) is in the range of 0.001-0.5.

3. The membrane heat exchanger plate bundle of claim 1 or 2, wherein the first membrane layer (301) and the second membrane layer (302) are welded together by tie bars (7).

4. The bundle of membrane heat exchanger plates according to claim 3, wherein a plurality of welding strips (10) are arranged between the first membrane layer (301) and the second membrane layer (302), and adjacent welding strips (10) are arranged in parallel.

5. The membrane heat exchanger plate bundle of claim 1 or 2, wherein the first membrane layer (301) and the second membrane layer (302) are welded together by a plurality of welding bars (10), and a plurality of strip-shaped channels are formed by welding the first membrane layer (301) and the second membrane layer (302).

6. The membrane heat exchange plate bundle according to claim 5, wherein the ratio of the distance between two adjacent welding bars (10) to the length of the first membrane layer (301)/the second membrane layer (302) is not greater than 0.3, and/or the ratio of the distance between two adjacent welding bars (10) to the width of the first membrane layer (301)/the second membrane layer (302) is not greater than 0.3.

7. The bundle of membrane heat exchanger plates according to claim 1 or 2, wherein the first membrane layer (301) and the second membrane layer (302) are welded to each other by a plurality of welding points (11).

8. The membrane bundle according to claim 7, wherein a plurality of soldering points (11) are distributed in a matrix form; or the welding points (11) are arranged in a linear mode, and the lines formed by connecting the welding points (11) in two adjacent rows are arranged in a staggered mode.

9. The bundle of thin film heat exchange plates according to claim 2, wherein the first film layer (301) and/or the second film layer (302) and/or the tie bars (7) are made of a flexible polymer material, and the flexible polymer material comprises any one or more of FEP, PTFE, PFA, PP, and PVC.

10. A heat exchanger, comprising a plurality of the film heat exchange plate bundles as recited in any one of claims 1 to 9, wherein two adjacent heat exchange plate bundles (3) are fixedly connected with each other through a connecting device (4), the plurality of film heat exchange plate bundles (3) form a film heat exchanger core (1), a sealing plate (14) and a connecting rod (13) are arranged outside the film heat exchanger core (1), the two sealing plates (14) are arranged on two sides of the connecting rod (13), the heat exchange plate bundles (3) are welded and connected with a corner sealing film (12) through a first connecting portion (8), the other side of the corner sealing film (12) is connected with the connecting rod (13), and the heat exchange plate bundles (3) are detachably connected with the sealing plate (14) through a first film layer (301)/a second film layer (302).

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