CN110207531A - A kind of limit sleeve for preventing precoated metal periosteum from giving up the throne - Google Patents
A kind of limit sleeve for preventing precoated metal periosteum from giving up the throne Download PDFInfo
- Publication number
- CN110207531A CN110207531A CN201910526691.1A CN201910526691A CN110207531A CN 110207531 A CN110207531 A CN 110207531A CN 201910526691 A CN201910526691 A CN 201910526691A CN 110207531 A CN110207531 A CN 110207531A
- Authority
- CN
- China
- Prior art keywords
- limit sleeve
- throne
- precoated metal
- giving
- tube
- 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.)
- Pending
Links
- 239000002184 metal Substances 0.000 title claims abstract description 49
- 208000006735 Periostitis Diseases 0.000 title claims abstract description 12
- 210000003460 periosteum Anatomy 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 abstract description 11
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 22
- 229910052731 fluorine Inorganic materials 0.000 description 22
- 239000011737 fluorine Substances 0.000 description 22
- 229910000831 Steel Inorganic materials 0.000 description 15
- 239000010959 steel Substances 0.000 description 15
- 229920002313 fluoropolymer Polymers 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 239000012528 membrane Substances 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 238000007789 sealing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 238000013517 stratification Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 208000006558 Dental Calculus Diseases 0.000 description 1
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000003373 anti-fouling effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 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
- F28F9/02—Header boxes; End plates
- F28F9/04—Arrangements for sealing elements into header boxes or end plates
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses the limit sleeve that one kind can prevent precoated metal periosteum from giving up the throne, including limit sleeve ontology, the hole of perforation is provided on the limit sleeve ontology, hole inner wall has groove.Limit sleeve of the invention is covered in use at the both ends of precoated metal pipe, prevents phenomenon of giving up the throne because of covering material caused by being frequently heated and be cooled.
Description
Technical field
The present invention relates to technical field of heat exchangers, the limit that can prevent precoated metal periosteum from giving up the throne more particularly to one kind
Set.
Background technique
Precoated metal pipe refers on metal tube surface overlay film in a specific way, and passing through the excellent physicochemical property of membrane material improves
Metal tube surface characteristic, makes it have wider applicability and function, such as corrosion-resistant, ant-scaling, wear-resistant.Now moulded with fluorine
For steel pipe.
Patent publication No is the patent application of 105946194 A of CN, discloses a kind of fluorine plastic-steel pipe production method.Fluorine modeling
Steel heat exchanger tube is a kind of composite material heat exchanger tube for solving heat exchanger tube burn into dust stratification, scale problems.It utilizes soluble poly
Tetrafluoroethene (PFA) or other fluoroplastics are directly molded on metal tube surface by hot melting way and combine closely with metal tube
Together.Since fluoroplastics surface is smooth, chemical property is stablized, fluorine plastic-steel heat exchanger tube is with corrosion-resistant on the outside of anti-tartar, anti-dust stratification, pipe
Characteristic.Heat exchanger based on fluorine plastic-steel heat exchanger tube is known as fluorine plastic-steel heat exchanger, serious commonly used in corrosion and dust stratification problem
Exchange heat occasion.
In pervious fluorine plastic-steel heat exchanger, fluorine Plastic Steel Pipe and tube sheet use expanded joint or welded connecting.No matter which kind of is connected
Mode is required to fluoroplastics film slicing off one section in end, using between metal and metal expanded joint or welding, with guarantee fluorine mould
The connection sealing of steel pipe and tube sheet.
However in fluorine plastic-steel heat exchanger use process, there is phenomenon of giving up the throne in fluorine plastic-steel tube end outer surface fluoroplastics
(fluoroplastics film is different from steel pipe thermal expansion coefficient, causes fluoroplastics film after being heated or being cooled that can not be restored to the original length, sees
Fig. 3), this is because (fluoroplastics film physicochemical property is at any time caused by heat exchanger tube is continually heated and is cooled in heat transfer process
Variation).Fluoroplastics, which are given up the throne, to be caused to be exposed to again under perishable environment by the steel pipe that fluoroplastics wrap up originally, makes heat exchanger
Corrosion-resistant and scaling property can be difficult to ensure that product reliability and service life decline.
Summary of the invention
To overcome the problems, such as that the film of precoated metal pipe in use is given up the throne, providing one kind can prevent precoated metal periosteum from moving back
The limit sleeve of position, the limit sleeve coaxial sleeve is at the both ends of precoated metal pipe, and lock ring is prevented on the outside of pipe by way of expanded joint connects
Only membrane material causes to shrink problem of giving up the throne because being frequently cooled on the outside of pipe, guarantees that precoated metal pipe performance can maintain for a long time,
Improve Product Safety and reliability.
In order to achieve the above object, the technical solution adopted in the present invention is as follows: one kind can prevent precoated metal periosteum from moving back
The limit sleeve of position, including limit sleeve ontology are provided with the hole of perforation on the limit sleeve ontology, and hole inner wall has groove.
Preferably, the groove shapes can be arc groove, U-shaped groove, wave shape groove etc..
Preferably, the groove number is one or more.The beneficial effects of the present invention are: limit sleeve of the invention is same
Axle sleeve connects lock ring outside pipe outside precoated metal pipe, through expanded joint, and reinforcement covering material is bonded with steel pipe；The limit sleeve
Inner wall is equipped with groove structure, and the metal tube outer wall in expanded joint can be made to protrude, further strengthen limit sleeve, membrane material and metal tube
Between connection (guaranteeing that with metal tube relative displacement will not occur for membrane material in frequently heated or while being cooled).Limit of the invention
Set, covers in use at the both ends of precoated metal pipe, prevents phenomenon of giving up the throne because of membrane material caused by being frequently heated and be cooled.
Detailed description of the invention
Fig. 1 is precoated metal pipe schematic diagram；
Fig. 2 is precoated metal pipe and tube sheet connection schematic diagram (expanded joint and welding)；
Fig. 3 is that precoated metal periosteum is given up the throne schematic diagram；
Fig. 4 is limit sleeve structural schematic diagram；
Fig. 5 is limit sleeve and precoated metal pipe assembling schematic diagram；
Fig. 6 be in this example precoated metal pipe as exchanger tubes and tubesheets assembling schematic diagram；
Fig. 7 is enlarged view at I in Fig. 6；
In figure, metal tube 1, film 2, limit sleeve ontology 3, hole 4, groove 5, shell 6, left tube sheet 7, right tube plate 8, precoated metal
Pipe pipe 9, tubesheet holes 10, limit sleeve 11, sealing ring 12, annular groove 13.
Specific embodiment
Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to
When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent device and method of some aspects be described in detail in claims, the application.
As shown in Figure 1, be precoated metal pipe schematic diagram, i.e., overlay film 2 in a specific way on 1 outer wall of metal tube pass through film
The excellent physicochemical property of material improves metal tube surface characteristic, makes it have wider applicability and function, such as corrosion-resistant, anti-
Fouling, wear-resistant etc..
As shown in Fig. 2, fluorine Plastic Steel Pipe and tube sheet use expanded joint or welded connecting in pervious fluorine plastic-steel heat exchanger.Nothing
Which kind of, by connection type, it is required to fluoroplastics film slicing off one section in end, using the welding between metal and metal (in Fig. 2
(a) shown in) or expanded joint ((b) shown in) in Fig. 2, to guarantee the connection sealing of fluorine Plastic Steel Pipe and tube sheet.
As shown in figure 3, be that precoated metal periosteum is given up the throne schematic diagram, film give up the throne generation precoated metal pipe end, give up the throne
The pipe for causing script envelope to wrap up is exposed to again under perishable environment, and the corrosion-resistant and scaling property of heat exchanger is enable to be difficult to
Guarantee, product reliability and service life decline.
Based on the above issues, as shown in figure 4, the application provides a kind of limit sleeve that can prevent precoated metal periosteum from giving up the throne,
Including limit sleeve ontology 3, the hole 4 of perforation is provided on the limit sleeve ontology 3,4 inner wall of hole has groove 5.In use, limit sleeve
It is coaxially threaded through outside the end of metal tube, limit sleeve inner wall and metal pipe outer wall have gap, connect for expanded joint.It is golden after expanded joint
Belong to pipe outer wall to fit closely with limit sleeve inner wall, prevents that opposite sliding occurs between outside membrane material and metal tube.
The effect that film is given up the throne is limited to reinforce limit sleeve, in the hole inner wall recessing of limit sleeve.The groove structure can make
Metal tube is protruded with tube wall when limit sleeve expanded joint into groove, strengthens the combination of metal tube and limit sleeve, inhibits film to give up the throne existing
The generation of elephant (see Fig. 5).
In the embodiment of the application, the preferred cylindrical tube shape structure of limit sleeve ontology can according to actual installation situation
To select hollow polygon structure.
In the embodiment of the application, groove can be arc-shaped, U-shaped, waveform etc., and groove number can be 1
Or it is multiple.
In the embodiment of the application, the material of limit sleeve ontology can for stainless steels such as SUS304, S2205 or
The carbon steels such as Q235, Q345, preferably SUS304 stainless steel.
Embodiment:
The present embodiment provides an application of limit sleeve of the present invention, shell-and-tube heat exchanger, and heat exchanger tube is moulded using fluorine
Steel pipe, the structure of the center portion thereof point is as shown in fig. 6, with left tube sheet 7 and right tube plate 8, left and right on the shell 6 of shell-and-tube heat exchanger
It is connected with more fluorine Plastic Steel Pipes 9 between tube sheet, tubesheet holes identical with fluorine Plastic Steel Pipe quantity is provided on left tube sheet 7 and right tube plate 8
10, the left end of fluorine Plastic Steel Pipe 9 is threaded through on the tubesheet holes 10 of left tube sheet, and the right end of fluorine Plastic Steel Pipe 9 is threaded through the tube sheet of right tube plate
On hole 10, the left and right end of fluorine Plastic Steel Pipe 9 is co-axially mounted limit sleeve 11 of the invention in its end after being pierced by left tube sheet and right tube plate,
Limit sleeve inner wall and metal pipe outer wall have gap, connect for expanded joint, and metal pipe outer wall and limit sleeve inner wall are close after expanded joint
Fitting prevents that opposite sliding occurs between outside membrane material and metal tube.
At this time, it may be necessary to be opened up on tubesheet holes together for installing the annular groove 13 of sealing ring 12, tubesheet holes 10 passes through sealing
Circle 12 is connect with 9 outer wall of fluorine Plastic Steel Pipe, to realize the isolation at left and right sides of tube sheet, as shown in Figure 7.
In addition, it is necessary to which explanation is that heat exchanger tube is not limited to fluorine Plastic Steel Pipe herein, as long as in outer surface of metal pipe overlay film
Composite material tube is all suitable for.
Those skilled in the art will readily occur to its of the application after considering specification and practicing disclosure disclosed herein
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are by following
Claim is pointed out.It should be understood that the application is not limited to the accurate knot for being described above and being shown in the accompanying drawings
Structure, and various modifications and changes may be made without departing from the scope thereof.Scope of the present application only by the attached claims Lai
Limitation.
Claims (3)
1. the limit sleeve that one kind can prevent precoated metal periosteum from giving up the throne, which is characterized in that including limit sleeve ontology, the limit sleeve
The hole of perforation is provided on ontology, hole inner wall has groove.
2. the limit sleeve according to claim 1 for preventing precoated metal periosteum from giving up the throne, which is characterized in that the groove type
Shape can be arc groove, U-shaped groove or wave shape groove.
3. the limit sleeve according to claim 1 for preventing precoated metal periosteum from giving up the throne, which is characterized in that the groove number
Mesh can be one or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910526691.1A CN110207531A (en) | 2019-06-18 | 2019-06-18 | A kind of limit sleeve for preventing precoated metal periosteum from giving up the throne |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910526691.1A CN110207531A (en) | 2019-06-18 | 2019-06-18 | A kind of limit sleeve for preventing precoated metal periosteum from giving up the throne |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110207531A true CN110207531A (en) | 2019-09-06 |
Family
ID=67793353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910526691.1A Pending CN110207531A (en) | 2019-06-18 | 2019-06-18 | A kind of limit sleeve for preventing precoated metal periosteum from giving up the throne |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110207531A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205175202U (en) * | 2015-10-27 | 2016-04-20 | 苏州天沃科技股份有限公司 | Tube sheet structure in tantalum material heat exchanger |
| CN206787369U (en) * | 2017-04-28 | 2017-12-22 | 上海金由氟材料股份有限公司 | PTFE tube ends fixed structure in a kind of heat exchanger |
| CN207894294U (en) * | 2017-12-25 | 2018-09-21 | 浙江鼎诚环保科技有限公司 | A kind of tube plate structure of gas-liquid type teflon heat exchanger |
| CN210426233U (en) * | 2019-06-18 | 2020-04-28 | 衢州佰强新材料科技有限公司 | Limiting sleeve capable of preventing film of film-coated metal tube from retreating |
-
2019
- 2019-06-18 CN CN201910526691.1A patent/CN110207531A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205175202U (en) * | 2015-10-27 | 2016-04-20 | 苏州天沃科技股份有限公司 | Tube sheet structure in tantalum material heat exchanger |
| CN206787369U (en) * | 2017-04-28 | 2017-12-22 | 上海金由氟材料股份有限公司 | PTFE tube ends fixed structure in a kind of heat exchanger |
| CN207894294U (en) * | 2017-12-25 | 2018-09-21 | 浙江鼎诚环保科技有限公司 | A kind of tube plate structure of gas-liquid type teflon heat exchanger |
| CN210426233U (en) * | 2019-06-18 | 2020-04-28 | 衢州佰强新材料科技有限公司 | Limiting sleeve capable of preventing film of film-coated metal tube from retreating |
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