CN108317885B - Sealing connection structure of heat exchange tube and tube plate - Google Patents
Sealing connection structure of heat exchange tube and tube plate Download PDFInfo
- Publication number
- CN108317885B CN108317885B CN201810334855.6A CN201810334855A CN108317885B CN 108317885 B CN108317885 B CN 108317885B CN 201810334855 A CN201810334855 A CN 201810334855A CN 108317885 B CN108317885 B CN 108317885B
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- China
- Prior art keywords
- tube
- sealing
- heat exchange
- external thread
- plate
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Links
- 238000007789 sealing Methods 0.000 title claims abstract description 89
- 239000011521 glass Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 230000032683 aging Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000010425 asbestos Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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
- F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
- F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
- F28F9/266—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by screw-type connections
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention relates to an internal structure of a heat exchanger, in particular to a sealing connection structure of a heat exchange tube and a tube plate, which solves the problems of complex tube penetrating operation, poor sealing performance, easy ageing leakage and low reliability when the traditional sealing structure is assembled, and solves the problem of difficult sealing connection between a glass heat exchange tube and the tube plate at the same time, and adopts the scheme that: an external thread screw pipe with a flange at one end is screwed on the pipe plate, a sealing groove is formed in the flange, a gasket is arranged in the groove, a middle nut and an end nut are screwed at the other end of the thread pipe, a gasket is embedded between the middle nut and the pipe plate, a thread stepped hole is formed in an inner hole of the end nut, and the end of the screw pipe is screwed into the thread stepped hole and is embedded with a sealing gasket. The advantages are that: 1. the processing and manufacturing are simple and convenient, and the cost is low; 2. the installation is convenient and quick; 3. the multiple sealing effect is good; 4. the service life is long; 5. the problem that the glass heat exchange tube is difficult to be connected with the tube plate in a sealing way is solved, and the glass heat exchange tube is protected.
Description
Technical Field
The invention relates to an internal structure of a heat exchanger, in particular to a sealing connection structure of a heat exchange tube and a tube plate.
Background
At present, the tube plate and the heat exchange tube in the heat exchanger are connected by filling and sealing asbestos sleeves, and the like, so that the following defects exist in use: the sleeve is clamped between the tube plate and the heat exchange tube, and the tube penetrating is complex during processing; the elasticity of sleeve pipe is mainly leaned on in the sealing, and the leakage takes place easily after using a period. In order to overcome the technical defects, a sealing connection structure which is simple to operate during assembly, good in sealing performance, longer in service life and high in reliability needs to be designed.
Disclosure of Invention
The invention solves the problems of complicated pipe penetrating operation, poor sealing performance, easy aging, leakage and low reliability of the traditional asbestos sleeve filling sealing structure during assembly, and provides a sealing connection structure of a heat exchange pipe and a pipe plate.
The invention is realized by the following technical scheme: the sealing connection structure of the heat exchange tube and the tube plate comprises the tube plate and the heat exchange tube, wherein an external thread screw tube is screwed on the tube plate, the heat exchange tube is penetrated in the external thread screw tube, a sealing flange is arranged at one end of the external thread screw tube, a lower annular sealing groove is formed in one surface of the sealing flange opposite to the tube plate, and a lower sealing gasket is embedded in the lower annular sealing groove; the other end of the external thread screw tube penetrates through the tube plate and then is sequentially screwed with a middle nut and an end nut, one surface of the tube plate opposite to the middle nut is provided with a middle annular sealing groove, the middle annular sealing groove is communicated with a threaded hole matched with the external thread screw tube and the tube plate, a middle sealing gasket is embedded in the middle annular sealing groove, and the middle nut is attached to the other surface of the tube plate and compresses the middle sealing gasket; the heat exchange tube is penetrated by one end of a sealing flange of the external thread screw tube, and penetrates out of the inner hole of the end nut after being sealed by the end sealing gasket. The sealing flange is provided with a lower annular sealing groove, a lower sealing gasket is embedded in the lower annular sealing groove, the external thread screw tube is screwed into the tube plate, the sealing flange presses the lower sealing gasket tightly, and a gap between the external thread screw tube and the lower surface of the tube plate is sealed. The middle nut compresses a middle sealing gasket in the middle annular sealing groove, and a gap between the external thread screw tube and the upper surface of the tube plate is sealed. The inner hole of the end nut is provided with a first-stage stepped threaded hole, and an end sealing gasket is embedded between the stepped surface of the first-stage stepped hole and the end of the external thread screw tube to seal a gap between the heat exchange tube and the external thread screw tube.
The invention has the following advantages: 1. the processing and manufacturing are simple and convenient, and the cost is low; 2. the installation is convenient and quick; 3. the multiple sealing effect is good; 4. the service life can be prolonged by replacing the sealing gasket; 5. the sealing structure is particularly suitable for sealing connection between the glass heat exchange tube and the tube plate, solves the problem that the glass heat exchange tube is difficult to be in sealing connection with the tube plate, and plays a role in protecting the glass heat exchange tube.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
in the figure: the heat exchange tube comprises a 1-tube plate, a 2-heat exchange tube, a 3-external thread screw tube, a 4-lower sealing gasket, a 5-middle nut, a 6-end nut, a 7-middle sealing gasket and an 8-end sealing gasket.
Detailed Description
The sealing connection structure of the heat exchange tube and the tube plate comprises the tube plate 1 and the heat exchange tube 2, wherein an external thread screw tube 3 is screwed on the tube plate 1, the heat exchange tube 2 is penetrated in the external thread screw tube 3, one end of the external thread screw tube 3 is provided with a sealing flange, one surface of the sealing flange opposite to the tube plate 1 is provided with a lower annular sealing groove, and a lower sealing gasket 4 is embedded in the lower annular sealing groove; the other end of the external thread screw tube 3 penetrates through the tube plate 1 and then is sequentially screwed with a middle nut 5 and an end nut 6, one surface of the tube plate 1 opposite to the middle nut 5 is provided with a middle annular sealing groove, the middle annular sealing groove is communicated with a threaded hole matched with the external thread screw tube 3 and the tube plate 1, a middle sealing gasket 7 is embedded in the middle annular sealing groove, and the middle nut 5 is adhered to the other surface of the tube plate 1 and compresses the middle sealing gasket 7; the inner hole of the end nut 6 is provided with a first-stage stepped threaded hole, the end of the external thread screw tube 3 is screwed into the first-stage stepped threaded hole of the end nut 6, an end sealing gasket 8 is embedded between the end of the external thread screw tube 3 and the stepped surface of the first-stage stepped threaded hole, one end of the sealing flange of the external thread screw tube 3 penetrates through the heat exchange tube 2, and the heat exchange tube penetrates out of the inner hole of the end nut 6 after being sealed by the end sealing gasket 8.
In specific implementation, the end of the external thread screw tube 3 is provided with a conical end sealing groove which is inclined to the inner hole and is communicated with the inner hole. The end seal groove is inclined towards the inner hole in a conical shape, and when the end nut 6 is locked, the end seal gasket 8 is extruded and deformed towards the middle part of the heat exchange tube 2, so that the sealing effect is further improved.
During installation, the lower sealing gasket 4 is sleeved on the external thread screw tube 3, the external thread screw tube 3 is embedded into the lower annular sealing groove on the sealing flange, the sealing flange is tightly pressed on the lower sealing gasket 4 and is tightly attached to the lower surface of the tube plate 1, the middle nut 5 is tightly pressed on the external thread screw tube 3 after the middle sealing gasket 7 is embedded into the middle annular sealing groove on the upper surface of the tube plate 1, and the middle sealing gasket 7 is tightly pressed, and the lower surface of the middle nut 5 is tightly attached to the upper surface of the tube plate 1. The heat exchange tube 2 is penetrated from the lower end of the external thread screw tube 3, an end sealing gasket 8 is arranged in the conical end sealing groove, and finally the end nut 6 is sleeved from the upper end of the heat exchange tube 2, screwed into the upper end of the external thread screw tube 3 and tightly presses the end sealing gasket 8.
Claims (1)
1. The utility model provides a sealing connection structure of heat exchange tube and tube sheet, includes tube sheet (1) and heat exchange tube (2), its characterized in that: an external thread screw tube (3) is screwed on the tube plate (1), a heat exchange tube (2) is penetrated in the external thread screw tube (3), a sealing flange is arranged at one end of the external thread screw tube (3), a lower annular sealing groove is formed in one surface of the sealing flange, which is opposite to the tube plate (1), and a lower sealing gasket (4) is embedded in the lower annular sealing groove; the middle nut (5) and the end nut (6) are sequentially screwed after the other end of the external thread screw tube (3) penetrates out of the tube plate (1), a middle annular sealing groove is formed in one surface of the tube plate (1) opposite to the middle nut (5), the middle annular sealing groove is communicated with threaded holes matched with the external thread screw tube (3) and the tube plate (1), a middle sealing gasket (7) is embedded in the middle annular sealing groove, and the middle nut (5) is adhered to the other surface of the tube plate (1) and compresses the middle sealing gasket (7); the heat exchange tube (2) is penetrated by one end of a sealing flange of the external thread screw tube (3), and penetrates out of an inner hole of the end nut (6) after being sealed by the end sealing gasket (8); the end of the external thread screw tube (3) is provided with a conical end sealing groove which is inclined to the inner hole and is communicated with the inner hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810334855.6A CN108317885B (en) | 2018-04-15 | 2018-04-15 | Sealing connection structure of heat exchange tube and tube plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810334855.6A CN108317885B (en) | 2018-04-15 | 2018-04-15 | Sealing connection structure of heat exchange tube and tube plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108317885A CN108317885A (en) | 2018-07-24 |
| CN108317885B true CN108317885B (en) | 2024-02-06 |
Family
ID=62897709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810334855.6A Active CN108317885B (en) | 2018-04-15 | 2018-04-15 | Sealing connection structure of heat exchange tube and tube plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108317885B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109780895B (en) * | 2019-02-07 | 2021-04-30 | 世博宝得冷热科技江阴有限公司 | Square shell heat exchanger and modular assembly process thereof |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0117821A2 (en) * | 1983-02-28 | 1984-09-05 | Baltimore Aircoil Company, Inc. | Compression sealing of tubes within shell and tube heat exchangers |
| DE3500767A1 (en) * | 1985-01-11 | 1986-08-07 | Friedrich 7181 Satteldorf Müller | Electrically insulating collar |
| CN2225013Y (en) * | 1995-06-15 | 1996-04-17 | 常州市化工设备厂 | Glass-enameled tube shell style heat exchanger |
| CN2253463Y (en) * | 1996-01-13 | 1997-04-30 | 李宝忠 | Glass lined double-pipe heat exchanger |
| CN2330969Y (en) * | 1998-04-29 | 1999-07-28 | 赵海龙 | Fast dismantled and assembled radiator |
| CN2723947Y (en) * | 2004-09-04 | 2005-09-07 | 张庆九 | Tubular enamel glass heat exchanger |
| CN201221906Y (en) * | 2008-04-15 | 2009-04-15 | 南京鹳山化工科技有限公司 | Column tube-type heat exchanger made of tantalum |
| CN104613239A (en) * | 2014-12-05 | 2015-05-13 | 江门市君盛实业有限公司 | Sealing structure |
| CN204771358U (en) * | 2015-07-13 | 2015-11-18 | 无锡化工装备股份有限公司 | Prevent tube sheet welding deformation's frock |
| CN105202963A (en) * | 2015-09-29 | 2015-12-30 | 茂名重力石化机械制造有限公司 | Non-welding forced sealing structure for heat exchange tube and tube plate |
| CN205545989U (en) * | 2016-04-25 | 2016-08-31 | 山西阳煤化工机械（集团）有限公司 | But disconnect electrothermal tube and tube sheet structure |
| CN208075663U (en) * | 2018-04-15 | 2018-11-09 | 山西阳煤化工机械（集团）有限公司 | The Hermetical connecting structure of exchanger tubes and tubesheets |
-
2018
- 2018-04-15 CN CN201810334855.6A patent/CN108317885B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0117821A2 (en) * | 1983-02-28 | 1984-09-05 | Baltimore Aircoil Company, Inc. | Compression sealing of tubes within shell and tube heat exchangers |
| DE3500767A1 (en) * | 1985-01-11 | 1986-08-07 | Friedrich 7181 Satteldorf Müller | Electrically insulating collar |
| CN2225013Y (en) * | 1995-06-15 | 1996-04-17 | 常州市化工设备厂 | Glass-enameled tube shell style heat exchanger |
| CN2253463Y (en) * | 1996-01-13 | 1997-04-30 | 李宝忠 | Glass lined double-pipe heat exchanger |
| CN2330969Y (en) * | 1998-04-29 | 1999-07-28 | 赵海龙 | Fast dismantled and assembled radiator |
| CN2723947Y (en) * | 2004-09-04 | 2005-09-07 | 张庆九 | Tubular enamel glass heat exchanger |
| CN201221906Y (en) * | 2008-04-15 | 2009-04-15 | 南京鹳山化工科技有限公司 | Column tube-type heat exchanger made of tantalum |
| CN104613239A (en) * | 2014-12-05 | 2015-05-13 | 江门市君盛实业有限公司 | Sealing structure |
| CN204771358U (en) * | 2015-07-13 | 2015-11-18 | 无锡化工装备股份有限公司 | Prevent tube sheet welding deformation's frock |
| CN105202963A (en) * | 2015-09-29 | 2015-12-30 | 茂名重力石化机械制造有限公司 | Non-welding forced sealing structure for heat exchange tube and tube plate |
| CN205545989U (en) * | 2016-04-25 | 2016-08-31 | 山西阳煤化工机械（集团）有限公司 | But disconnect electrothermal tube and tube sheet structure |
| CN208075663U (en) * | 2018-04-15 | 2018-11-09 | 山西阳煤化工机械（集团）有限公司 | The Hermetical connecting structure of exchanger tubes and tubesheets |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108317885A (en) | 2018-07-24 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20240924 Address after: 044500 No.8, Zhongshan West Street, Yongji City, Yuncheng City, Shanxi Province Patentee after: SHANXI FENGXI CHEMICAL EQUIPMENT Co.,Ltd. Country or region after: China Address before: No. 10, Electronic Street, Xiaohe Industrial Park, Taiyuan City, Shanxi Province Patentee before: SHANXI YANGMEI CHEMICAL MACHINERY (GROUP) Co.,Ltd. Country or region before: China |
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| TR01 | Transfer of patent right |