CN108225056B - Measurable scale-resistant double-pipe heat exchanger - Google Patents
Measurable scale-resistant double-pipe heat exchanger Download PDFInfo
- Publication number
- CN108225056B CN108225056B CN201810090733.7A CN201810090733A CN108225056B CN 108225056 B CN108225056 B CN 108225056B CN 201810090733 A CN201810090733 A CN 201810090733A CN 108225056 B CN108225056 B CN 108225056B
- Authority
- CN
- China
- Prior art keywords
- inlet end
- end flange
- inner tube
- outer tube
- pipe
- Prior art date
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 claims abstract description 20
- 238000005070 sampling Methods 0.000 claims abstract description 15
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 6
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 5
- 239000008233 hard water Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 229910052755 nonmetal Inorganic materials 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000012546 transfer Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- ZFXVRMSLJDYJCH-UHFFFAOYSA-N calcium magnesium Chemical compound [Mg].[Ca] ZFXVRMSLJDYJCH-UHFFFAOYSA-N 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
- F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular conduits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
-
- 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
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
- F28F9/06—Arrangements for sealing elements into header boxes or end plates by dismountable joints
- F28F9/12—Arrangements for sealing elements into header boxes or end plates by dismountable joints by flange-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
- F28F2275/00—Fastening; Joining
- F28F2275/06—Fastening; Joining by welding
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 discloses a measurable scale-resistant double-pipe heat exchanger, which comprises an inner pipe and an outer pipe sleeved on the outer side of the inner pipe, wherein one end of the outer pipe is connected with an inlet end flange through a connecting piece, the inlet end of the inner pipe passes through the inlet end flange and is in clearance fit with the inlet end flange, an inlet end sealing ring is welded at a position, close to the inlet end, of the inner pipe, the inlet end sealing ring is positioned in the outer pipe and is abutted against the inlet end flange, the other end of the outer pipe is connected with an outlet end flange through the connecting piece, the outlet end of the pipe passes through the outlet end flange and is welded and fixed with the outlet end flange, and a plurality of sampling screws are arranged at intervals in the middle of the inner pipe and used for fixing thermocouple elements. The outer tube of the invention adopts non-metal polytetrafluoroethylene material, which reduces the adhesion of wall dirt, the inner tube can be drawn out from the outer tube, the related work of scale removal, maintenance, cleaning and replacement is convenient, and the thermocouple element can test the temperature of the outer wall of the inner tube and the fluid in the inner tube, thereby detecting the heat exchange effect of the double-tube heat exchanger.
Description
Technical Field
The invention relates to the technical field of heat exchangers, in particular to a measurable scale-resistant double-pipe heat exchanger.
Background
The double-pipe heat exchanger is used as a mainstream heat exchanger, is widely applied to the industrial fields of refrigeration, petrochemical industry, chemical industry, new energy sources and the like, and plays a vital role in improving the production efficiency. The double-pipe heat exchanger is mainly composed of concentric circular double pipes formed by connecting two standard pipes with different sizes, and plays a role in heat exchange by the reverse or same-direction flow of two different mediums in the pipes.
In order to prevent leakage of the double-pipe heat exchanger, the prior art often adopts an integral heat exchange structure. During the actual operation of the heat exchanger, scale may form on the heat transfer surface due to contact with the fluid, thereby affecting the flow and heat transfer of the fluid, and the overall operating efficiency is reduced. Therefore, the integral heat exchange structure is very inconvenient for cleaning the pipe wall, and the application cost is increased.
Industrial water is used as a heat exchange fluid and is very widely used in heat exchangers. In a high hard water environment, the solubility of the calcium magnesium salt in water is reduced along with the increase of the temperature, so that dirt is formed on the wall surface of the heat exchanger, and the heat exchange effect is greatly reduced. Under the working condition of easy scale generation, the heat exchange thermal resistance of the traditional heat exchanger can be greatly increased, so that the overall heat exchange efficiency is greatly reduced.
Disclosure of Invention
The invention aims to: the invention aims to solve the series of problems, and provides the measurable scale-resistant double-pipe heat exchanger, which has a simple structure, is convenient to detach and clean, and can be used for measuring the temperature of the outer wall of the inner pipe and the fluid in the inner pipe by using the thermocouple element so as to measure the heat exchange effect of the heat exchanger.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the utility model provides a measurable scale-resistant double-pipe heat exchanger, including coaxial inner tube and the outer tube that sets up, the material of outer tube is polytetrafluoroethylene, outer tube one end passes through the connecting piece and links to each other with the entry end flange, the outer tube is equipped with hard water export by the position of entry end flange, the inner tube entry end passes the entry end flange, and be clearance fit between inner tube entry end and the entry end flange, the position welding that is close to the entry end at the inner tube has the entry end sealing ring, the entry end sealing ring is located the outer tube and leans on the entry end flange, contact surface at entry end flange and outer tube, the entry end sealing ring all is equipped with the entry end sealing pad, the outer tube other end passes through connecting piece and exit end flange connection, contact surface at exit end flange and outer tube is equipped with exit end sealing pad, the outer tube is equipped with hard water entry by the position of exit end flange, the inner tube exit end passes the exit end flange, and inner tube exit end and exit end flange welded fastening, set up a plurality of sampling screw in the middle part interval at the inner tube, sampling screw is used for fixed patch thermocouple and collects hard water raw scale sample.
Further, the outer tube is provided with a process hole corresponding to the position of the sampling screw, the process hole is provided with a detachable sealing cover and a cable waterproof connector, and a signal wire of the patch thermocouple is led out through a lead hole of the cable waterproof connector.
Furthermore, the inner tube is made of red copper.
Furthermore, the inlet end and the outlet end of the inner pipe are respectively provided with a movable joint.
Compared with the traditional double-pipe heat exchanger, the invention has the following positive effects:
the outer tube is made of non-metal polytetrafluoroethylene materials, so that the adhesion of dirt on the wall surface of the outer tube in the heat exchange process is reduced, the inner tube can be pulled out of the outer tube, the related work of descaling, maintenance, cleaning and replacement is facilitated, and the application cost of equipment is saved; in the design of the invention, the thermocouple element can be fixed by the sampling screw to test the temperature of the outer wall of the inner tube and the fluid in the inner tube, so that the heat exchange effect of the double-tube heat exchanger can be detected, and the sampling screw can also collect a hard water scale sample.
Drawings
FIG. 1 is a schematic illustration of a measurable scale-resistant double pipe heat exchanger according to the present invention;
FIG. 2 is an enlarged view of section I of FIG. 1;
FIG. 3 is a schematic view of the structure of the inner tube, inlet end seal ring, and outlet end flange of the double pipe heat exchanger;
in the figure: 1-an inner tube; 2-a disc flange; 3-an inlet end gasket seal; 4-an inlet end seal ring; 5-an outer tube; 6-an outlet end sealing gasket; 7-an outlet end flange; 8-process holes; 9-sealing the cover; 10-hard water inlet; 11-hard water outlet, 12-cable waterproof joint; 13-sampling screws; 14-movable joint.
The specific embodiment is as follows:
the invention is further explained below with reference to the drawings.
As shown in fig. 1 to 3, a measurable scale-resistant double pipe heat exchanger of the present invention comprises an inner pipe 1 and an outer pipe 5 sleeved outside the inner pipe 1. The inner tube 1 is made of red copper, and the outer tube 5 is made of polytetrafluoroethylene.
The outer tube 5 one end is passed through the connecting piece and is linked to each other with entry end flange 2, the outer tube 5 is equipped with hard water export 11 by entry end flange 2's position, the inner tube 1 entry end is passed entry end flange 2, and be clearance fit between inner tube 1 entry end and the entry end flange 2, the position welding near entry end at inner tube 1 has entry end sealing ring 4, entry end sealing ring 4 is located outer tube 5 and leans on entry end flange 2, contact surface at entry end flange 2 and outer tube 5, entry end sealing ring 4 all is equipped with entry end sealing washer 3, the outer tube 5 other end is connected with exit end flange 7 through the connecting piece, contact surface at exit end flange 7 and outer tube 5 is equipped with exit end sealing washer 6, the position of outer tube 5 by entry end flange 7 is equipped with hard water entry 10, inner tube 1 exit end is passed exit end flange 7, and inner tube 1 exit end and exit end flange 7 welded fastening, set up a plurality of sampling screw 13 at inner tube 1 middle part interval. The sampling screw 13 is used for fixing the patch type thermocouple and collecting the hard water scale sample.
In this embodiment, the connecting piece is fastening bolt, be convenient for the dismouting of outer tube 5 both ends and entry end flange 2 and exit end flange 7, in order to be convenient for the dismouting of sampling screw 13 be equipped with on the outer tube 5 with the corresponding process hole 8 of sampling screw 13 position, process hole 8 is equipped with detachable sealed lid 9 and cable water joint 12, and the signal line of paster thermocouple is drawn forth through cable water joint 12's lead wire hole. In addition, the inlet end and the outlet end of the inner tube 1 are respectively provided with a movable joint 14, so that the double-pipe heat exchanger can be conveniently in butt joint with other pipelines.
When the heat exchanger works, the patch type thermocouple can be fixed through the sampling screw 13 to test the temperature of the outer wall of the inner tube and the fluid inside the inner tube, so that the heat exchange effect of the double-tube heat exchanger is detected, and as the outer tube 5 is made of nonmetal polytetrafluoroethylene materials, the adhesion of dirt on the wall surface of the outer tube in the heat exchange process is reduced. The inner pipe 1 of the invention can be conveniently drawn out from the outer pipe 5, thereby performing related works of descaling, maintenance, cleaning and replacement, and saving the application cost of the equipment.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (2)
1. The utility model provides a measurable scale resistant double-pipe heat exchanger, includes inner tube (1) and outer tube (5) of coaxial setting, its characterized in that: the material of the outer tube (5) is polytetrafluoroethylene, one end of the outer tube (5) is connected with an inlet end flange (2) through a connecting piece, a hard water outlet (11) is arranged at the position, close to the inlet end flange (2), of the outer tube (5), the inlet end of the inner tube (1) penetrates through the inlet end flange (2), the inner tube (1) and the inlet end flange (2) are in clearance fit, an inlet end sealing ring (4) is welded at the position, close to the inlet end, of the inner tube (1), the inlet end sealing ring (4) is positioned in the outer tube (5) and is attached to the inlet end flange (2), inlet end sealing gaskets (3) are arranged at the contact surfaces of the inlet end flange (2) and the outer tube (5) and the inlet end sealing ring (4), the other end of the outer tube (5) is connected with the outlet end flange (7) through the connecting piece, a hard water inlet (10) is arranged at the contact surface, close to the inlet end flange (7), the position, close to the inlet end flange (7) of the inner tube (1) is provided with a hard water inlet (1), the outlet end of the inner tube (1) penetrates through the outlet end flange (7), the outlet end flange (1) and a plurality of sampling screws (13) are welded at intervals in the middle of the inner tube (1), the sampling screw (13) is used for fixing the patch type thermocouple and collecting a hard water scale sample;
the outer tube (5) is provided with a process hole (8) corresponding to the position of the sampling screw (13), the process hole (8) is provided with a detachable sealing cover (9) and a cable waterproof joint (12), and a signal wire of the patch thermocouple is led out through a lead hole of the cable waterproof joint (12);
the inlet end and the outlet end of the inner pipe (1) are respectively provided with a movable joint (14).
2. A measurable scale resistant double pipe heat exchanger according to claim 1, wherein: the inner tube (1) is made of red copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090733.7A CN108225056B (en) | 2018-01-30 | 2018-01-30 | Measurable scale-resistant double-pipe heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810090733.7A CN108225056B (en) | 2018-01-30 | 2018-01-30 | Measurable scale-resistant double-pipe heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108225056A CN108225056A (en) | 2018-06-29 |
| CN108225056B true CN108225056B (en) | 2023-11-14 |
Family
ID=62669827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810090733.7A Active CN108225056B (en) | 2018-01-30 | 2018-01-30 | Measurable scale-resistant double-pipe heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108225056B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5837533A (en) * | 1981-06-18 | 1983-03-04 | ドリユ−・ケミカル・コ−ポレ−シヨン | Device and method of measuring rate of corrosion of surface of heat transfer |
| US5323849A (en) * | 1993-04-21 | 1994-06-28 | The United States Of America As Represented By The Secretary Of The Navy | Corrosion resistant shell and tube heat exchanger and a method of repairing the same |
| JPH07146263A (en) * | 1993-11-24 | 1995-06-06 | Kurita Water Ind Ltd | Estimation method for fouling coefficient of heat exchanger |
| US5615733A (en) * | 1996-05-01 | 1997-04-01 | Helio-Compatic Corporation | On-line monitoring system of a simulated heat-exchanger |
| US5992505A (en) * | 1996-08-13 | 1999-11-30 | Korea Electric Power Corp. | Fouling monitoring apparatus of heat exchanger and method thereof |
| CN2438127Y (en) * | 2000-07-17 | 2001-07-04 | 东北电力学院 | Scaling inhibition in-line monitoring device for water treatment technique |
| US6386272B1 (en) * | 2000-01-28 | 2002-05-14 | York International Corporation | Device and method for detecting fouling in a shell and tube heat exchanger |
| CN2789704Y (en) * | 2004-12-09 | 2006-06-21 | 沈德智 | High-temperature material corrosion resistance sleeve heat exchanger |
| WO2007003801A2 (en) * | 2005-05-10 | 2007-01-11 | Institut National De La Recherche Agronomique - Inra | Method and system for measuring and examining reactor fouling |
| CN202013330U (en) * | 2011-02-25 | 2011-10-19 | 江苏省特种设备安全监督检验研究院 | Deposition rate detection device for CaCo3 |
| CN203216813U (en) * | 2013-04-09 | 2013-09-25 | 江苏省特种设备安全监督检验研究院 | Device for measuring scale deposition during gasification |
| CN205690933U (en) * | 2016-06-03 | 2016-11-16 | 泰州市远望换热设备有限公司 | Dismountable double-tube heat exchanger |
| FR3037389A1 (en) * | 2015-06-09 | 2016-12-16 | Mersen France Py Sas | TUBULAR HEAT EXCHANGER COMPRISING A CRACKING CONTROL MEMBER, ITS IMPLEMENTATION METHOD AND ITS MOUNTING METHOD |
-
2018
- 2018-01-30 CN CN201810090733.7A patent/CN108225056B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5837533A (en) * | 1981-06-18 | 1983-03-04 | ドリユ−・ケミカル・コ−ポレ−シヨン | Device and method of measuring rate of corrosion of surface of heat transfer |
| US5323849A (en) * | 1993-04-21 | 1994-06-28 | The United States Of America As Represented By The Secretary Of The Navy | Corrosion resistant shell and tube heat exchanger and a method of repairing the same |
| JPH07146263A (en) * | 1993-11-24 | 1995-06-06 | Kurita Water Ind Ltd | Estimation method for fouling coefficient of heat exchanger |
| US5615733A (en) * | 1996-05-01 | 1997-04-01 | Helio-Compatic Corporation | On-line monitoring system of a simulated heat-exchanger |
| US5992505A (en) * | 1996-08-13 | 1999-11-30 | Korea Electric Power Corp. | Fouling monitoring apparatus of heat exchanger and method thereof |
| US6386272B1 (en) * | 2000-01-28 | 2002-05-14 | York International Corporation | Device and method for detecting fouling in a shell and tube heat exchanger |
| CN2438127Y (en) * | 2000-07-17 | 2001-07-04 | 东北电力学院 | Scaling inhibition in-line monitoring device for water treatment technique |
| CN2789704Y (en) * | 2004-12-09 | 2006-06-21 | 沈德智 | High-temperature material corrosion resistance sleeve heat exchanger |
| WO2007003801A2 (en) * | 2005-05-10 | 2007-01-11 | Institut National De La Recherche Agronomique - Inra | Method and system for measuring and examining reactor fouling |
| CN202013330U (en) * | 2011-02-25 | 2011-10-19 | 江苏省特种设备安全监督检验研究院 | Deposition rate detection device for CaCo3 |
| CN203216813U (en) * | 2013-04-09 | 2013-09-25 | 江苏省特种设备安全监督检验研究院 | Device for measuring scale deposition during gasification |
| FR3037389A1 (en) * | 2015-06-09 | 2016-12-16 | Mersen France Py Sas | TUBULAR HEAT EXCHANGER COMPRISING A CRACKING CONTROL MEMBER, ITS IMPLEMENTATION METHOD AND ITS MOUNTING METHOD |
| CN205690933U (en) * | 2016-06-03 | 2016-11-16 | 泰州市远望换热设备有限公司 | Dismountable double-tube heat exchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108225056A (en) | 2018-06-29 |
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