CN210198183U - Composite pipe heat exchanger - Google Patents
Composite pipe heat exchanger Download PDFInfo
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- CN210198183U CN210198183U CN201920489214.8U CN201920489214U CN210198183U CN 210198183 U CN210198183 U CN 210198183U CN 201920489214 U CN201920489214 U CN 201920489214U CN 210198183 U CN210198183 U CN 210198183U
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- heat exchange
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- heat exchanger
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Abstract
The utility model provides a compound tube heat exchanger, it includes casing, heat exchange tube bank, elbow case and washing shower nozzle. The inner wall of the shell is provided with an inner liner layer made of fluoroplastic materials. The heat exchange tubes in the heat exchange tube bundle are arranged in the shell in a pairwise parallel mode, each heat exchange tube in the heat exchange tube bundle is provided with at least two tube bodies, each tube body comprises a main body portion and a covering portion located outside the main body portion, and the covering portions are made of fluoroplastic materials. The elbow box is arranged on two sides of the shell, the heat exchange tubes extend into the elbow box, an elbow is arranged in the elbow box, and two adjacent tubes in the same heat exchange tube are connected through the elbow to enable the tubes of the same tube to be connected in series. The cleaning spray head is arranged in the shell and is positioned above the heat exchange tube bundle. According to the utility model discloses a compound tubular heat exchanger can be used for corrosive gas's heat transfer, reduce cost when guaranteeing heat transfer performance to realize the anticorrosive ability and the anti deposition function of equipment.
Description
Technical Field
The utility model relates to a heat exchanger technical field, concretely relates to compound tubular heat exchanger.
Background
In the fields of petrochemical industry and the like, shell-and-tube heat exchangers are widely used in heat exchange process flows. When heat exchange is carried out between corrosive gas and other common working media, the corrosion resistance of the common metal tube type heat exchanger is poor; most of the tubes of the corrosion-resistant tube type heat exchanger are titanium tubes, so that the cost is high; the heat exchange performance and the pressure bearing capacity of the corrosion-resistant pure plastic heat exchange tube and the quartz glass heat exchange tube are poor. In addition, dust contained in the corrosive gas can be attached to the outer wall of the heat exchange tube and the inner wall of the shell to generate dust deposition, so that the heat exchange tube is abraded and heat loss in the heat exchange process is caused.
It is therefore desirable to provide a composite tube heat exchanger that at least partially addresses the above problems.
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 solving the above-mentioned problem, the utility model discloses a compound tube heat exchanger, it includes:
the inner wall of the shell is provided with an inner lining layer made of fluoroplastic materials;
the heat exchange tube bundle comprises heat exchange tubes, a heat exchanger tube bundle and a cover part, wherein the heat exchange tubes in the heat exchange tube bundle are arranged in the shell in a pairwise parallel manner, each heat exchange tube in the heat exchange tube bundle is provided with at least two tubes, each tube comprises a main body part and a cover part positioned outside the main body part, and the cover part is made of fluoroplastic materials;
the elbow box is arranged on two sides of the shell, the heat exchange tubes extend into the elbow box, an elbow is arranged in the elbow box, and two adjacent tubes in the same heat exchange tube are connected through the elbow so as to enable the tubes of the same tube to be connected in series; and
and the cleaning spray head is arranged in the shell and is positioned above the heat exchange tube bundle.
According to the utility model discloses a compound tubular heat exchanger can be used for corrosive gas's heat transfer, reduce cost when guaranteeing heat transfer performance to realize the anticorrosive ability and the anti deposition function of equipment.
Optionally, the composite tube heat exchanger further comprises:
a first header disposed in the elbow box and in fluid communication with the tubes proximate the heat exchange tube inlets; and
and the second header is arranged in the elbow box and is communicated with the pipe body fluid close to the outlet of the heat exchange pipe.
Optionally, the casing is provided with a through hole, the pipe body passes through the through hole and extends to the elbow box, and a sealing ring is arranged at the through hole.
Optionally, the composite tube heat exchanger further comprises a sealing air interface, and the sealing air interface is arranged on the elbow box to realize positive pressure sealing in the elbow box.
Optionally, the seal ring is made of a non-metallic material.
Optionally, at least two heat exchange tubes are arranged in the shell, and two adjacent heat exchange tubes of the at least two heat exchange tubes are overlapped in the height direction of the composite tube heat exchanger.
Optionally, at least two heat exchange tubes are arranged in the shell, and two adjacent heat exchange tubes of the at least two heat exchange tubes are staggered in the height direction of the composite tube heat exchanger.
Optionally, the body portion is made of a metallic material.
Optionally, the body portion is made of steel.
Optionally, the first header and the second header are disposed in the same elbow tank, or disposed in different elbow tanks, respectively.
Drawings
The following drawings of the embodiments of the present invention are provided as a part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,
fig. 1 is a schematic structural view of a composite tube heat exchanger according to an embodiment of the present invention;
fig. 2 is a top view of the composite tube heat exchanger of fig. 1.
Fig. 3 is a left side view of the composite tube heat exchanger of fig. 1.
Description of reference numerals:
100. composite tube heat exchanger 110, shell
120. Heat exchange tube bundle 121 and heat exchange tube
122. Pipe body 130, elbow box
131. Elbow 140, cleaning nozzle interface
141. Fluid pipeline 150, header
151. First header 152 and second header
160. Sealing ring 170 and sealing air interface
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 embodiments of the 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 embodiments of the present invention.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the 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 utility model provides a compound tube heat exchanger 100, this compound tube heat exchanger 100 can anticorrosive and anti deposition. The composite tube heat exchanger 100 may generally include a shell 110, a heat exchange tube bundle 120, an elbow box 130, and a cleaning spray head (not shown). The composite tube heat exchanger 100 of the present invention will be described in detail with reference to fig. 1 to 3.
As shown in fig. 1 and 2, the heat exchange tube bundle 120 is enclosed in the shell 110, and the respective heat exchange tubes 121 of the heat exchange tube bundle 120 are parallel to each other. The tube body 122 of the heat exchange tube 121 has a main body portion and a covering portion disposed outside the main body portion. The heat exchange system of composite tube heat exchanger 100 includes a first fluid passageway (not shown) within the tubes of heat exchange tube bundle 120 and a second fluid passageway (not shown) between the exterior of the tubes of heat exchange tube bundle 120 and the interior wall of shell 110. Working medium fluids with different temperatures flow in the first fluid channel and the second fluid channel and exchange heat. The main body portion of the tube 122 is in fluid contact with the general working fluid in the first fluid passage, and is made of a common material such as steel; the covering portion of the tube 122 contacts with the corrosive working fluid in the second fluid passage, and is made of corrosion-resistant material. In this embodiment, an inner liner made of fluoroplastic is disposed on an inner wall of the housing 110, and a covering layer made of fluoroplastic is disposed on an outer wall of the tube 122. Thus, the corrosive gas may flow in the second fluid passage (not shown) to exchange heat.
The axial direction D1 is parallel to the central axis of the tube 122. Elbow boxes 130 are disposed on both sides of the housing 110 in the axial direction D1, the elbow boxes 130 being for accommodating the elbows 131. The heat exchange tube bundle 120 has at least two heat exchange tubes 121, and each heat exchange tube 121 has at least two tubes 122. The tubes 122 of the same heat exchange tube 121 are parallel to each other. Each tube body 122 in the same heat exchange tube 121 is referred to as a column of heat exchange tubes. Adjacent two of the same rows of heat exchange tubes are connected by bends 131 to allow fluid flow within each heat exchange tube 121 and have multiple flow directions. Namely, the utility model provides a heat exchanger with multitube journey number can improve the velocity of flow of fluid in the pipe to increase heat transfer area.
As shown in fig. 2, a cleaning spray header interface 140 is disposed within shell 110 above heat exchange tube bundle 120. After the composite tube heat exchanger 100 is used for a period of time, dust carried by the corrosive gas accumulates in the second fluid path. By opening the cleaning nozzle and causing it to spray fluid, the dust can be flushed out to clean the apparatus. In the illustrated embodiment, the housing 110 is provided with a fluid line 141, both ends of which are provided with cleaning head connectors 140, and a cleaning head may be provided on the fluid line 141, in such a manner that a cleaning fluid may be introduced into the fluid line 141 through the cleaning head connectors 140 and injected into the housing 110 through the cleaning head provided on the fluid line 141.
In addition, the self-lubricity of the fluorine material can be utilized to better clean dust adhering to the inner wall of the housing 110 and the covering portion of the tube 122.
As shown in fig. 1 and 2, the heat exchange tubes 121 have first pipe joints near the fluid inlet, and a first header 151 disposed inside the elbow tank 130 is connected to each first pipe joint, respectively, to communicate the first header with the fluid and to homogenize the working fluid in each heat exchange tube 121. The heat exchange tubes 121 have second pipe joints near the fluid outlet, and a second header tank 152 provided in the elbow tank 130 is connected to each of the second pipe joints, respectively, to communicate the fluid with the second header tank and collect the working fluid in each of the heat exchange tubes 121. In the present embodiment, the first header 151 and the second header 152 are horizontally disposed, and the first header 151 is disposed above the second header 152. In an embodiment not shown, the second header 152 may also be disposed above the first header 151. The first and second headers 151 and 152 may be disposed vertically or obliquely. The first header 151 and the second header 152 may be provided in the elbow boxes 130 on the same side, or may be provided in the elbow boxes 130 on different sides. In the present embodiment, the first header tank 151 and the second header tank 152 are provided in the elbow tank 130 on the same side.
The shell 110 is provided with through holes in the wall thereof which meets the elbow tank 130, and the tubular bodies 122 of the respective heat exchange tubes 121 extend toward both ends in the axial direction D1 and enter the elbow tank 130 through the through holes in the wall thereof.
To prevent the escape of corrosive gases, a sealing ring 160 is provided at the through hole in the wall. The sealing ring 160 is made of a non-metallic material, so that corrosion loss can be reduced, and thermal stress generated at the joint of the tube body 122 of the heat exchange tube and the shell 110 in the heat exchange process can be compensated.
As shown in fig. 3, a sealing air port 170 is further provided on the surface of the elbow box 130 to prevent the escape of corrosive gas. By connecting with external equipment such as an air compressor, the sealing air interface 170 can realize positive pressure sealing in the elbow box 130, effectively prevent corrosive gas from entering the elbow box 130, and ensure that the elbow box 130 and parts such as the header 150 and the elbow 131 inside the elbow box 130 do not contact with the corrosive gas. Therefore, the elbow box 130 and the parts such as the header 150 and the elbow 131 inside the elbow box can be made of common materials, and the cost is reduced.
The corrosive gas may have a different flow direction within the second fluid channel in relation to the position of the fluid inlet (not shown) of the second fluid channel. In the present embodiment, the corrosive gas flows in a first direction a1 perpendicular to the axial direction D1 in the height direction at the fluid inlet (not shown).
The parallel heat exchange tubes 121 shown in fig. 2 overlap in the height direction. At this time, the flow of the corrosive gas in the first direction a1 is less disturbed by the heat exchange pipe 121, and fly ash, and thus, equipment wear is not easily aggravated.
It will be understood by those skilled in the art that the parallel heat exchange tubes 121 may be arranged to be offset from each other in the height direction. At this time, the flow of the corrosive gas in the first direction a1 is greatly disturbed by the heat exchange tube 121, and the heat exchange effect is good.
Further, in arranging the spatial orientation of the composite tube heat exchanger, the above-described height direction may be any direction among the spatial orientations. In other words, the composite tube heat exchanger as a whole may be arranged in any desired orientation, such that the heat exchange tubes and the header of the composite tube heat exchanger may be arranged in a horizontal direction, a vertical direction, or a direction inclined to the horizontal direction.
According to the utility model discloses a compound tube heat exchanger can realize corrosive gas and the heat transfer of general fluid through the cover portion at the compound corrosion-resistant fluoroplastics material of ordinary heat exchange tube outside, guarantees the structural strength of heat exchanger when reducing the corrosion resistance cost. And by providing at least two tubes in the heat exchange tube, a heat exchanger with a multi-pass number is provided to achieve a high heat exchange efficiency. By arranging the cleaning spray head and utilizing the self-lubricating property of the fluorine material, the dust accumulated in the heat exchanger can be effectively cleaned. The positive pressure ventilation through the sealing of the sealing ring and the sealing air port effectively prevents the leakage of corrosive gas, reduces the use of corrosion-resistant materials and further reduces the cost.
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. Terms such as "disposed" and the like, as used herein, may refer to one element being directly attached to another element or one element being attached to another element through intervening elements. 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. It will be appreciated by those skilled in the art that many more modifications and variations are possible in light of the above teaching and are intended to be included within the scope of the invention.
Claims (10)
1. A composite tube heat exchanger, comprising:
the inner wall of the shell is provided with an inner lining layer made of fluoroplastic materials;
the heat exchange tube bundle comprises heat exchange tubes, a heat exchanger tube bundle and a cover part, wherein the heat exchange tubes in the heat exchange tube bundle are arranged in the shell in a pairwise parallel manner, each heat exchange tube in the heat exchange tube bundle is provided with at least two tubes, each tube comprises a main body part and a cover part positioned outside the main body part, and the cover part is made of fluoroplastic materials;
the elbow box is arranged on two sides of the shell, the heat exchange tubes extend into the elbow box, an elbow is arranged in the elbow box, and two adjacent tubes in the same heat exchange tube are connected through the elbow so as to enable the tubes of the same tube to be connected in series; and
and the cleaning spray head is arranged in the shell and is positioned above the heat exchange tube bundle.
2. The composite tube heat exchanger of claim 1, further comprising:
a first header disposed in the elbow box and in fluid communication with the tubes proximate the heat exchange tube inlets; and
and the second header is arranged in the elbow box and is communicated with the pipe body fluid close to the outlet of the heat exchange pipe.
3. The composite tube heat exchanger of claim 1, wherein the shell is provided with a through hole through which the tube body extends to the elbow box, the through hole being provided with a sealing ring.
4. The composite tube heat exchanger of claim 3, further comprising a sealing air port disposed on the elbow box for effecting a positive pressure seal within the elbow box.
5. The composite tube heat exchanger of claim 3, wherein the seal ring is made of a non-metallic material.
6. The composite tube heat exchanger as recited in claim 1 wherein at least two of said heat exchange tubes are disposed within said shell, adjacent two of said at least two heat exchange tubes overlapping in a height direction of said composite tube heat exchanger.
7. The composite tube heat exchanger as recited in claim 1 wherein at least two of said heat exchange tubes are disposed within said shell, adjacent two of said at least two heat exchange tubes being staggered in a height direction of said composite tube heat exchanger.
8. The composite tube heat exchanger of claim 1, wherein the body portion is made of a metallic material.
9. The composite tube heat exchanger of claim 8, wherein the body portion is made of steel.
10. The composite tube heat exchanger of claim 2, wherein the first header and the second header are disposed in the same elbow tank, or are disposed in different elbow tanks, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920489214.8U CN210198183U (en) | 2019-04-11 | 2019-04-11 | Composite pipe heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920489214.8U CN210198183U (en) | 2019-04-11 | 2019-04-11 | Composite pipe heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210198183U true CN210198183U (en) | 2020-03-27 |
Family
ID=69876582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920489214.8U Active CN210198183U (en) | 2019-04-11 | 2019-04-11 | Composite pipe heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210198183U (en) |
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2019
- 2019-04-11 CN CN201920489214.8U patent/CN210198183U/en active Active
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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 |