CN211782963U - Combined heat exchanger - Google Patents
Combined heat exchanger Download PDFInfo
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- CN211782963U CN211782963U CN201922215193.3U CN201922215193U CN211782963U CN 211782963 U CN211782963 U CN 211782963U CN 201922215193 U CN201922215193 U CN 201922215193U CN 211782963 U CN211782963 U CN 211782963U
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Abstract
The utility model discloses a combined heat exchanger, including first heat exchanger, second heat exchanger and the third heat exchanger that sets gradually. The third heat exchanger is an enamel plate heat exchanger, the contact surface of a heat exchange fin in the enamel plate heat exchanger and a heat medium is enamel, and the first heat exchanger, the second heat exchanger and the third heat exchanger are arranged along a straight line. According to the utility model discloses a combined heat exchanger sets up three heat exchanger along the flow direction of hot medium, and enamel plate heat exchanger is adopted in the low reaches, can improve heat exchange efficiency at the abundant heat transfer of three temperature gradient to overcome the poor problem of ordinary plate heat exchanger anti low temperature corrosivity, the difficult adhesion liquid in enamel surface in addition, makeed enamel plate heat exchanger's long service life, and then reduce use cost.
Description
Technical Field
The utility model relates to a chemical industry field particularly relates to a combined heat exchanger.
Background
The plate heat exchanger is a high-efficiency heat exchanger with high heat exchange coefficient, small floor area, light weight and reduced resistance, is generally made of cast iron, carbon steel or stainless steel and the like, has the problems of poor low-temperature corrosion, no dew point corrosion resistance and the like, has the defect of short normal service cycle under the condition of low-temperature corrosion of a heat medium, needs to be frequently replaced, and has complex procedures and high cost.
Accordingly, there is a need to provide a combination heat exchanger to at least partially solve the problems of the prior art.
SUMMERY OF THE UTILITY MODEL
In the summary section a series of concepts in a simplified form is introduced, which will be described in further detail in the detailed description section. The inventive content does not imply any attempt to define the essential features and essential features of the claimed solution, nor is it implied to be intended to define the scope of the claimed solution.
For at least partly solve above-mentioned problem, the utility model provides a combined heat exchanger, including first heat exchanger, second heat exchanger and the third heat exchanger that sets gradually, wherein the third heat exchanger is enamel plate heat exchanger, the contact surface enamel of heat exchanger fin and hot medium among the enamel plate heat exchanger, first heat exchanger the second heat exchanger with the third heat exchanger is arranged along the straight line.
According to the utility model discloses a combined heat exchanger sets up three heat exchanger along the flow direction of hot medium, and enamel plate heat exchanger is adopted in the low reaches, can improve heat exchange efficiency at the abundant heat transfer of three temperature gradient to overcome the poor problem of ordinary plate heat exchanger anti low temperature corrosivity, the difficult adhesion liquid in enamel surface in addition, makeed enamel plate heat exchanger's long service life, and then reduce use cost.
Further, the working temperature of the first heat exchanger is more than 450 ℃, the working temperature of the second heat exchanger is between 200 ℃ and 450 ℃, and the working temperature of the third heat exchanger is less than 200 ℃.
Further, the first heat exchanger is directly connected to the second heat exchanger.
Further, a heat medium intermediate channel is arranged between the second heat exchanger and the third heat exchanger, the second heat exchanger is welded to the heat medium intermediate channel, and the third heat exchanger is connected with the heat medium intermediate channel through a flange.
Further, the combination heat exchanger further includes a first intermediate cooling medium passage connected between the second heat exchanger and the third heat exchanger.
Further, the combination type heat exchanger further comprises a second intermediate cooling medium passage connected between the first heat exchanger and the second heat exchanger.
Further, the first heat exchanger and the second heat exchanger are perpendicular to a cold medium inlet and a hot medium outlet of at least one of the third heat exchangers.
Further, the first heat exchanger is a stainless steel plate type heat exchanger, and heat exchange fins in the stainless steel plate type heat exchanger are made of stainless steel.
Further, the second heat exchanger is a carbon steel plate type heat exchanger, and heat exchange fins in the carbon steel plate type heat exchanger are made of carbon steel.
Further, the contact surface of the heat medium intermediate channel and the heat medium is enameled.
Drawings
The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions of the invention, which are used to explain the principles of the invention.
In the drawings:
fig. 1 is a schematic structural diagram of a combined heat exchanger according to the present invention.
Description of reference numerals:
10: first heat exchanger
20: second heat exchanger
30: third heat exchanger
41: intermediate channel for heat medium
42: flange
43: heat medium inlet channel
44: outlet channel for heat medium
51: refrigerant inlet channel
52: refrigerant outlet channel
53: first cold medium intermediate channel
54: second cold medium intermediate channel
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art, that the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present invention.
In the following description, a detailed description will be given for a thorough understanding of the present invention. It is apparent that the implementation of the embodiments of the present invention is not limited to the specific details familiar to those skilled in the art. The preferred embodiments of the present invention are described in detail below, however, other embodiments of the present invention are possible in addition to these detailed descriptions.
It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
Exemplary embodiments according to the present invention will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of these exemplary embodiments to those skilled in the art.
Fig. 1 shows a combined heat exchanger according to a preferred embodiment of the present invention, which includes a first heat exchanger 10, a second heat exchanger 20, and a third heat exchanger 30 arranged in sequence. The third heat exchanger 30 is an enamel plate heat exchanger, contact surfaces of heat exchange fins in the enamel plate heat exchanger and a heat medium are enamel, and the first heat exchanger 10, the second heat exchanger 20 and the third heat exchanger 30 are arranged along a straight line.
According to the utility model discloses a combined heat exchanger sets up three heat exchanger along the flow direction of hot medium, and enamel plate heat exchanger is adopted in the low reaches, can improve heat exchange efficiency at the abundant heat transfer of three temperature gradient to overcome the poor problem of ordinary plate heat exchanger anti low temperature corrosivity, the difficult adhesion liquid in enamel surface in addition, makeed enamel plate heat exchanger's long service life, and then reduce use cost.
Specifically, the first heat exchanger 10, the second heat exchanger 20, and the third heat exchanger 30 are sequentially arranged in the flow direction of the heat medium. Wherein the temperature of the heat medium in the first heat exchanger 10 is the highest, the temperature of the heat medium in the second heat exchanger 20 is the second highest, and the temperature of the heat medium in the third heat exchanger 30 is the lowest.
Continuing to refer to fig. 1, the first heat exchanger 10 is preferably a stainless steel plate heat exchanger in which the fins are made of stainless steel. The working temperature of the first heat exchanger 10 is more than 450 ℃, that is, the temperature of the heat medium entering the first heat exchanger 10 is more than 450 ℃, the stainless steel has good high temperature corrosion resistance, and the high temperature section adopts a stainless steel plate type heat exchanger, so that the service life of the combined heat exchanger can be prolonged.
The second heat exchanger 20 is preferably a carbon steel plate heat exchanger in which the fins are made of carbon steel. The working temperature of the second heat exchanger 20 is between 200 ℃ and 450 ℃, that is, the temperature of the heat medium entering the second heat exchanger 20 is between 200 ℃ and 450 ℃, neither high temperature corrosion nor low temperature corrosion exists in the temperature range of 200 ℃ to 450 ℃, a carbon steel heat exchanger is adopted in the middle temperature region, the characteristic that carbon steel is easy to obtain and low in cost is fully utilized, and the cost of the combined heat exchanger can be greatly reduced.
The operating temperature of the third heat exchanger 30 is below 200 c, it being understood that the temperature of the thermal medium entering the third heat exchanger 30 is less than 200 c.
The first heat exchanger 10 is directly connected to the second heat exchanger 20. Preferably, the first heat exchanger 10 and the second heat exchanger 20 are connected by welding. A heat medium intermediate channel 41 is arranged between the second heat exchanger 20 and the third heat exchanger 30, the second heat exchanger 20 is welded to the heat medium intermediate channel 41, and the third heat exchanger 30 is connected with the heat medium intermediate channel 41 through a flange 42. Wherein the contact surface of the heat medium intermediate channel 41 and the heat medium is enameled.
With continued reference to fig. 1, the combination heat exchanger further includes a first intermediate coolant passage 53 and a second intermediate coolant passage 54. Wherein the first cold medium intermediate passage 53 is connected to the side of the same side of the second and third heat exchangers 20 and 30, and the second cold medium intermediate passage 54 is connected to the side of the other side of the first and second heat exchangers 10 and 20. Thus, the first heat exchanger 10 and the second heat exchanger 20 are perpendicular to the cooling medium inlet and the heating medium outlet of the third heat exchanger 30, and the cooling medium passes through the third heat exchanger 30, the second heat exchanger 20, and the first heat exchanger 10 in this order. In the illustrated embodiment, the heat medium inlet passage 43, the heat medium outlet passage 44, and the heat medium intermediate passage 41 are substantially in a straight line, and the first cold medium intermediate passage 53, the second cold medium intermediate passage 54, the heat medium intermediate passage 41, the heat medium inlet passage 43, the heat medium outlet passage 44, the cold medium inlet passage 51, and the cold medium outlet passage 52 are all located substantially on the same plane.
In order to further reduce the cost, the frames of the first heat exchanger 10, the second heat exchanger 20 and the third heat exchanger 30 are made of carbon steel.
In summary, the heat medium firstly enters the first heat exchanger 10 via the heat medium inlet channel 43, then enters the second heat exchanger 20, then enters the third heat exchanger 30 via the heat medium intermediate channel 41, and finally exits the combination heat exchanger via the heat medium outlet channel 44; the cold medium first enters the third heat exchanger 30 via the cold medium inlet channel 51, then enters the second heat exchanger 20 via the first cold medium intermediate channel 53, then enters the first heat exchanger 10 via the second cold medium intermediate channel 54, and finally exits the combination heat exchanger via the cold medium outlet channel 52. The cold and hot medium flows reversely, so that the hierarchy of heat exchange is increased, and the heat exchange efficiency is improved.
The third heat exchanger 30 is connected to the heat medium outlet channel 44, the coolant inlet channel 51 and the first coolant intermediate channel 53 by flanges 42. The connection surface of the flange 42 of the third heat exchanger 30 with the intermediate heat medium passage 41 and the outlet heat medium passage 44 is provided with a corrosion-resistant gasket.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Features described herein in one embodiment may be applied to another embodiment, either alone or in combination with other features, unless the feature is otherwise inapplicable or otherwise stated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. The combined heat exchanger is characterized by comprising a first heat exchanger, a second heat exchanger and a third heat exchanger which are sequentially arranged, wherein the third heat exchanger is an enamel plate type heat exchanger, contact surfaces of heat exchange fins and a heat medium in the enamel plate type heat exchanger are enamel, and the first heat exchanger, the second heat exchanger and the third heat exchanger are arranged along a straight line.
2. The combination heat exchanger of claim 1, wherein the first heat exchanger has an operating temperature of 450 ℃ or greater, the second heat exchanger has an operating temperature of between 200 ℃ and 450 ℃, and the third heat exchanger has an operating temperature of less than 200 ℃.
3. The combination heat exchanger of claim 1, wherein the first heat exchanger is directly connected to the second heat exchanger.
4. The combination heat exchanger of claim 1, wherein a thermal medium intermediate channel is provided between the second heat exchanger and the third heat exchanger, the second heat exchanger is welded to the thermal medium intermediate channel, and the third heat exchanger is flanged to the thermal medium intermediate channel.
5. The combination heat exchanger of claim 1, further comprising a first intermediate cold medium passage connected between the second heat exchanger and the third heat exchanger.
6. The combination heat exchanger of claim 1, further comprising a second intermediate cold medium passage connected between the first heat exchanger and the second heat exchanger.
7. The combination heat exchanger of claim 1, wherein the first heat exchanger, the second heat exchanger are perpendicular to a cold medium inlet and a hot medium outlet of at least one of the third heat exchangers.
8. The combination heat exchanger of claim 1, wherein the first heat exchanger is a stainless steel plate heat exchanger, and the fins in the stainless steel plate heat exchanger are made of stainless steel.
9. The combination heat exchanger of claim 1, wherein the second heat exchanger is a carbon steel plate heat exchanger, and the fins in the carbon steel plate heat exchanger are made of carbon steel.
10. Combined heat exchanger according to claim 4, characterised in that the contact surfaces of the intermediate heat medium channels with the heat medium are enamelled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922215193.3U CN211782963U (en) | 2019-12-05 | 2019-12-05 | Combined heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922215193.3U CN211782963U (en) | 2019-12-05 | 2019-12-05 | Combined heat exchanger |
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| Publication Number | Publication Date |
|---|---|
| CN211782963U true CN211782963U (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922215193.3U Active CN211782963U (en) | 2019-12-05 | 2019-12-05 | Combined heat exchanger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089509A (en) * | 2019-12-05 | 2020-05-01 | 上海齐耀热能工程有限公司 | Combined heat exchanger |
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2019
- 2019-12-05 CN CN201922215193.3U patent/CN211782963U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111089509A (en) * | 2019-12-05 | 2020-05-01 | 上海齐耀热能工程有限公司 | Combined heat exchanger |
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Address after: 201108 2nd Floor, No. 3111 Huaning Road, Minhang District, Shanghai Patentee after: SHANGHAI QIYAO THERMAL ENERGY ENGINEERING Co.,Ltd. Patentee after: The 711 Research Institute of China Shipbuilding Corp. Address before: 201108 2nd Floor, No. 3111 Huaning Road, Minhang District, Shanghai Patentee before: SHANGHAI QIYAO THERMAL ENERGY ENGINEERING Co.,Ltd. Patentee before: Shanghai Marine Diesel Engine Research Institute |
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| CP01 | Change in the name or title of a patent holder |