CN112923774A - Distributor for shell-and-tube heat exchanger - Google Patents
Distributor for shell-and-tube heat exchanger Download PDFInfo
- Publication number
- CN112923774A CN112923774A CN202110058563.6A CN202110058563A CN112923774A CN 112923774 A CN112923774 A CN 112923774A CN 202110058563 A CN202110058563 A CN 202110058563A CN 112923774 A CN112923774 A CN 112923774A
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- China
- Prior art keywords
- distributor
- tube
- stage
- distribution channel
- heat exchanger
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
- F28F9/02—Header boxes; End plates
- F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
- F28F9/0265—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by using guiding means or impingement means inside the header box
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F11/00—Arrangements for sealing leaky tubes and conduits
- F28F11/02—Arrangements for sealing leaky tubes and conduits using obturating elements, e.g. washers, inserted and operated independently of each other
Abstract
The invention discloses a distributor for a shell-and-tube heat exchanger, which comprises an inlet tube, an end cover plate, a distributor and a tube plate, wherein the end cover plate is arranged on the inlet tube; wherein, one side of the distributor is provided with an end cover plate, the other side is provided with a tube plate, the tube plate is provided with a heat exchange tube, the end cover plate is provided with a gradually reducing through hole, and the inlet of the gradually reducing through hole is connected with an inlet tube; the side wall of the distributor close to the end cover plate is provided with a first-stage distribution channel, the side wall of the distributor close to the end tube plate is provided with a second-stage distribution channel, the outlet of the reducing through hole is connected with the first-stage distribution channel, the first-stage distribution channel is communicated with the second-stage distribution channel through a plurality of circular through holes, and the first-stage distribution channel adopts a multi-stage fractal design. The multi-stage distribution method is adopted to improve the uniformity of working medium distribution, and further improve the working efficiency of the shell-and-tube heat exchanger. The distribution channel adopts a multi-stage fractal design, reduces the overall size of the distributor, enables the structure to be more compact, and greatly reduces the flow resistance while ensuring the distribution uniformity.
Description
Technical Field
The invention belongs to the field of heat exchange equipment, and particularly relates to a distributor for a shell-and-tube heat exchanger
Background
The shell-and-tube heat exchanger is a heat exchange device with wide application, and has the advantages of simple structure, easy maintenance, strong adaptability and the like. The heat exchange of cold and hot fluid is carried out in the heat exchanger through tens to hundreds of heat exchange tubes. Working medium directly flows into the heat exchange tubes through the tube box after entering from the inlet in the traditional shell-and-tube heat exchanger, the structure can cause uneven flow distribution of the working medium among the heat exchange tubes and difference of heat exchange conditions, heat exchange in some heat exchange tubes is not fully carried out, and the heat exchange in other heat exchange tubes is dried. This also leads to problems of overall inefficiency of the heat exchanger.
Disclosure of Invention
The invention aims to solve the problem of uneven distribution of working media of a shell-and-tube heat exchanger, and provides a distributor for the shell-and-tube heat exchanger. The device adopts a two-stage distribution method to uniformly distribute the working medium into each heat exchange tube, and the overall size is more compact by improving the structural design.
In order to achieve the purpose, the invention adopts the technical scheme that:
a distributor for a shell-and-tube heat exchanger comprises an inlet tube, an end cover plate, a distributor and a tube plate; wherein, one side of the distributor is provided with an end cover plate, the other side is provided with a tube plate, the tube plate is provided with a heat exchange tube, the end cover plate is provided with a gradually reducing through hole, and the inlet of the gradually reducing through hole is connected with an inlet tube; the side wall of the distributor close to the end cover plate is provided with a first-stage distribution channel, the side wall of the distributor close to the end tube plate is provided with a second-stage distribution channel, the outlet of the reducing through hole is connected with the first-stage distribution channel, the first-stage distribution channel is communicated with the second-stage distribution channel, and the first-stage distribution channel adopts a multi-stage fractal design.
The invention is further improved in that the circular through holes are multiple and are arranged along the thickness direction of the distributor and positioned at the tail end of the distribution channel of the first stage.
A further improvement of the invention is that a first layer of gasket is provided between the distributor and the end cover plate.
The invention has the further improvement that a first layer of sealing gasket flow hole is processed on the first-stage sealing gasket and is communicated with the outlet of the gradually-reduced through hole.
A further development of the invention is that a second layer of sealing gasket is arranged between the distributor and the tube plate.
The invention is further improved in that a second-stage sealing gasket flow hole is processed on the second-stage sealing gasket.
The invention is further improved in that a plurality of pipe holes are processed on the pipe plate, one end of each pipe hole is communicated with the second layer of sealing gasket circulation hole, and the other end of each pipe hole is communicated with the heat exchange pipe.
The invention is further improved in that the distributor is made of metal.
Compared with the prior art, the invention has the following beneficial effects: according to the invention, the first-stage distribution channel is formed on one side wall of the distributor, and the second-stage distribution channel is formed on the other side wall of the distributor, so that the flow of the working medium in each heat exchange tube can be accurately controlled, and the distribution uniformity is effectively improved. Through setting up first grade distribution channel on the distributor, effectively reduced the whole size of distributor, strengthened the compactness of structure. The first-stage distribution channel on the distributor adopts a multi-stage fractal design, so that the space is fully utilized, and the flow resistance of the working medium between the first-stage distribution channel and the first-stage distribution channel is reduced. The distributor is arranged at the working medium inlet of the shell-and-tube heat exchanger to distribute the flow of the working medium, so that the working medium uniformly enters each heat exchange tube, and the overall working efficiency of the heat exchanger is improved. The distributor adopts a multi-stage fractal design method to improve the uniformity of working medium distribution, and greatly reduces the flow resistance while ensuring the distribution uniformity.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic front view of the dispenser of the present invention.
Fig. 3 is a schematic view of the back structure of the dispenser of the present invention.
FIG. 4 is a schematic view of the structure of the first stage gasket of the present invention.
FIG. 5 is a schematic diagram of the second stage of the gasket of the present invention.
FIG. 6 is a schematic view of the tube sheet structure of the present invention.
Wherein: the heat exchanger comprises an inlet pipe 1, an end cover plate 2, a first layer of sealing gasket 3, a distributor 4, a second layer of sealing gasket 5, a tube plate 6, a heat exchange pipe 7, a first layer of sealing gasket circulation hole 3-1, a first-stage distribution channel 4-1, a circular through hole 4-2, a second-stage distribution channel 4-3, a second layer of sealing gasket circulation hole 5-1 and a tube hole 6-1.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 to 6, the distributor for a shell-and-tube heat exchanger according to the present invention includes an inlet tube 1, an end cover plate 2, a first layer of gasket 3, a distributor 4, a second layer of gasket 5, a tube plate 6, and the like.
Wherein, distributor 4 one side is provided with end cover plate 2, and the opposite side is provided with tube sheet 6 to be provided with the sealed 3 of first layer between distributor 4 and end cover plate 2, be provided with the sealed 5 of second layer between distributor 4 and the tube sheet 6.
The processing has the convergent through-hole on the end cover board 2, and the convergent through-hole is adjusted well with inlet tube 1 to the entry and the inlet tube 1 of convergent through-hole link to each other, reduce the diameter of flowing through the convergent section, guide working medium entering distributor 4.
The end cover plate 2 is connected with the first-stage sealing gasket 3 in a pressing mode.
Referring to fig. 4, the first-stage gasket 3 is formed with first-layer gasket flow holes 3-1. The first layer of sealing gasket flow holes 3-1 are aligned with the inlet pipe 1, and the outlets of the tapered through holes are communicated with the first layer of sealing gasket flow holes 3-1.
The first-stage sealing gasket 3 is connected with the distributor 4 in a pressing mode.
Referring to fig. 2, the distributor 4 is made of metal integrally, a first-stage distribution channel 4-1 is machined on the side wall of the distributor 4 close to the end cover plate 2, the first-stage distribution channel 4-1 adopts a four-stage fractal design, each stage divides one distribution channel into two symmetrical distribution channels towards two sides, and the inflowing working medium is uniformly distributed to a plurality of tail end outlet positions. Specifically, the four-level fractal design specifically comprises: the first-stage distribution channel 4-1 comprises a first channel, which is divided into two symmetrical branches, namely a first branch and a second branch, the first branch is subdivided into two symmetrical branches, namely a third branch and a fourth molecule, the second branch is subdivided into two symmetrical branches, a fifth branch and a sixth branch, the third branch is subdivided into two symmetrical branches, namely a seventh branch and an eighth branch, the fourth branch is subdivided into two symmetrical branches, namely a ninth branch and a tenth branch, the fifth branch is subdivided into two symmetrical branches, namely an eleventh branch and a twelfth branch, the sixth branch is subdivided into two symmetrical branches, namely a thirteenth branch and a fourteenth branch, the seventh branch, the eighth branch, the ninth branch, the tenth branch, the eleventh branch, the twelfth branch, the thirteenth branch and the fourteenth branch are subdivided into two symmetrical branches.
The distributor 4 is close to the end cover plate 2 side wall (front) each distribution channel end position along distributor 4 thickness direction corresponding processing have circular through-hole 4-2, for the working medium develops the flow and fully mixes in the interim. And a second-stage distribution channel 4-3 is processed on the side wall (back) of the distributor 4 close to the end pipe plate 6 corresponding to each circular through hole 4-2, and the working medium is distributed for the second time.
The other side of the distributor 4 is connected with a second-stage sealing gasket 5 in a pressing mode. Referring to fig. 5, the second-stage packing 5 is formed with a second-stage packing flow hole 5-1 which is positioned to be aligned with the end position of the second-stage distribution channel 4-3 on the back side of the distributor 4, and the second-stage packing flow hole 5-1 is communicated with the second-stage distribution channel 4-3. The second-stage sealing gasket 5 is in compression connection with the tube plate 6.
Referring to fig. 5, a plurality of pipe holes 6-1 are formed in the tube plate 6, and the pipe holes 6-1 are used for connecting the heat exchange tubes 7. The location of the orifice 6-1 is aligned with the distal outlet location of the second stage distribution channel 5-1 on the second stage seal 5 and the orifice 6-1 is in communication with the second stage distribution channel 5-1.
The distributor is arranged at the working medium inlet of the shell-and-tube heat exchanger to distribute the flow of the working medium, so that the working medium uniformly enters each heat exchange tube, and the overall working efficiency of the heat exchanger is improved.
The distributor adopts a multi-stage distribution method to improve the uniformity of working medium distribution, thereby improving the working efficiency of the shell-and-tube heat exchanger. The distribution channel is designed on the side wall of the distributor, so that the overall size of the distributor is reduced, and the structure is more compact. The distribution channel adopts a four-order fractal design, so that the distribution uniformity is ensured, and the flow resistance is greatly reduced.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (8)
1. The distributor for the shell-and-tube heat exchanger is characterized by comprising an inlet tube (1), an end cover plate (2), a distributor (4) and a tube plate (6); wherein, one side of the distributor (4) is provided with an end cover plate (2), the other side is provided with a tube plate (6), the tube plate (6) is provided with a heat exchange tube (7), the end cover plate (2) is processed with a gradually reducing through hole, and the inlet of the gradually reducing through hole is connected with the inlet tube (1); a first-stage distribution channel (4-1) is machined on the side wall, close to the end cover plate (2), of the distributor (4), a second-stage distribution channel (4-3) is machined on the side wall, close to the tube plate (6), of the distributor (4), the outlet of the reducing through hole is connected with the first-stage distribution channel (4-1), the first-stage distribution channel (4-1) is communicated with the second-stage distribution channel (4-3) through the circular through hole (4-2), and the first-stage distribution channel (4-1) is designed in a multi-stage fractal mode.
2. A distributor for a shell and tube heat exchanger according to claim 1, wherein the circular through-holes (4-2) are plural, arranged in the thickness direction of the distributor (4) and located at the end of the first-stage distribution channel (4-1).
3. A distributor for a shell and tube heat exchanger according to claim 1, characterized in that a first layer of sealing gasket (3) is arranged between the distributor (4) and the end cover plate (2).
4. A distributor for a shell and tube heat exchanger according to claim 3, characterized in that the first stage gasket (3) is provided with a first layer of gasket flow holes (3-1), and the first layer of gasket flow holes (3-1) are communicated with the outlet of the tapered through hole.
5. A distributor for a shell and tube heat exchanger according to claim 1, characterized in that a second layer of sealing gasket (5) is arranged between the distributor (4) and the tube sheet (6).
6. Distributor for a shell and tube heat exchanger according to claim 5, characterised in that the second stage gaskets (5) are provided with second stage gasket flow openings (5-1).
7. The distributor for the shell and tube heat exchanger according to claim 6, wherein the tube plate (6) is provided with a plurality of tube holes (6-1), one end of each tube hole (6-1) is communicated with the second layer of sealing gasket flow hole (5-1), and the other end of each tube hole (6-1) is communicated with the heat exchange tube (7).
8. A distributor for a shell and tube heat exchanger according to claim 1, characterized in that the material of the distributor (4) is metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110058563.6A CN112923774A (en) | 2021-01-16 | 2021-01-16 | Distributor for shell-and-tube heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110058563.6A CN112923774A (en) | 2021-01-16 | 2021-01-16 | Distributor for shell-and-tube heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112923774A true CN112923774A (en) | 2021-06-08 |
Family
ID=76162981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110058563.6A Pending CN112923774A (en) | 2021-01-16 | 2021-01-16 | Distributor for shell-and-tube heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112923774A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023238233A1 (en) * | 2022-06-07 | 2023-12-14 | 三菱電機株式会社 | Shell-and-tube type heat exchanger, and refrigeration cycle device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10325694A (en) * | 1997-05-23 | 1998-12-08 | M C Pack Kk | Straightener for liquid distributor |
| CN2711674Y (en) * | 2004-05-27 | 2005-07-20 | 天津大学 | Single tube pass shell type heat-exchanger with distributor |
| CN201297808Y (en) * | 2008-10-08 | 2009-08-26 | 珠海格力电器股份有限公司 | Flow equalization device for air conditioner refrigerant |
| CN101632878A (en) * | 2009-09-01 | 2010-01-27 | 北京创新通恒科技有限公司 | Distribution method and distribution device of mobile phases of chromatographic columns |
| CN102160937A (en) * | 2011-03-23 | 2011-08-24 | 江苏迪沃特仪器设备科技有限公司 | Dynamic axial compression column fluid distribution device |
| CN203024619U (en) * | 2012-12-21 | 2013-06-26 | 美意(浙江)空调设备有限公司 | Shell and tube type tubular heat exchanger |
| CN204193560U (en) * | 2014-10-13 | 2015-03-11 | 成都格莱精密仪器有限公司 | Multiple spot forces secondary distribution device |
| CN204522378U (en) * | 2015-01-13 | 2015-08-05 | 臧世达 | A kind of chromatographic column distributor |
| CN207880987U (en) * | 2018-02-06 | 2018-09-18 | 维谛技术有限公司 | Wet film component and air-conditioning |
-
2021
- 2021-01-16 CN CN202110058563.6A patent/CN112923774A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10325694A (en) * | 1997-05-23 | 1998-12-08 | M C Pack Kk | Straightener for liquid distributor |
| CN2711674Y (en) * | 2004-05-27 | 2005-07-20 | 天津大学 | Single tube pass shell type heat-exchanger with distributor |
| CN201297808Y (en) * | 2008-10-08 | 2009-08-26 | 珠海格力电器股份有限公司 | Flow equalization device for air conditioner refrigerant |
| CN101632878A (en) * | 2009-09-01 | 2010-01-27 | 北京创新通恒科技有限公司 | Distribution method and distribution device of mobile phases of chromatographic columns |
| CN102160937A (en) * | 2011-03-23 | 2011-08-24 | 江苏迪沃特仪器设备科技有限公司 | Dynamic axial compression column fluid distribution device |
| CN203024619U (en) * | 2012-12-21 | 2013-06-26 | 美意(浙江)空调设备有限公司 | Shell and tube type tubular heat exchanger |
| CN204193560U (en) * | 2014-10-13 | 2015-03-11 | 成都格莱精密仪器有限公司 | Multiple spot forces secondary distribution device |
| CN204522378U (en) * | 2015-01-13 | 2015-08-05 | 臧世达 | A kind of chromatographic column distributor |
| CN207880987U (en) * | 2018-02-06 | 2018-09-18 | 维谛技术有限公司 | Wet film component and air-conditioning |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023238233A1 (en) * | 2022-06-07 | 2023-12-14 | 三菱電機株式会社 | Shell-and-tube type heat exchanger, and refrigeration cycle device |
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