CN206787369U - PTFE tube ends fixed structure in a kind of heat exchanger - Google Patents
PTFE tube ends fixed structure in a kind of heat exchanger Download PDFInfo
- Publication number
- CN206787369U CN206787369U CN201720463095.XU CN201720463095U CN206787369U CN 206787369 U CN206787369 U CN 206787369U CN 201720463095 U CN201720463095 U CN 201720463095U CN 206787369 U CN206787369 U CN 206787369U
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- heat exchanger
- ptfe
- inner sleeve
- mounting hole
- metal card
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Abstract
The utility model discloses PTFE tube end fixed structures in a kind of heat exchanger, including metal card and PTFE heat exchanger tubes, metal card is provided with several mounting holes, PTFE heat exchanger tubes are in mounting hole, the connection inner sleeve of a PTFE material is equipped with described each mounting hole, PTFE tube ends are located in connection inner sleeve and are connected to a fixed with being connected inner sleeve by hot melt, connection inner sleeve upper end is provided with external screw thread and passes mounting hole, lower end also passes mounting hole and sets L-shaped flange, connection inner sleeve upper end is additionally provided with a clamp nut, clamp nut is pressed abd fixed between clamp nut and L-shaped flange by screwed on connection inner sleeve upper end and by metal card.The utility model can realize effective connection of the PTFE heat exchanger tubes in heat exchanger.
Description
Technical field
PTFE heat exchanger technologies are the utility model is related to, more specifically to PTFE heat exchange pipe end in a kind of heat exchanger
Portion's fixed structure.
Background technology
PTFE (polytetrafluoroethylene (PTFE)) tubing has excellent high-low temperature resistant characteristic, can be grown under conditions of -190~260 DEG C
Phase uses.PTFE material has good chemical stability, fluorine steam only under high temperature, and performance can change under alkali metal, right
Other all dense, dilute inorganic Organic Acid and Bases, ester do not react.Low surface friction coefficient, water repellent refuse dirt, inside and outside tube wall
Not incrustation.It is nontoxic, it is nonflammable the features such as, there is the high grade of transparency, be widely used in fluoroplastics heat exchanger, heat steam pipe arrangement etc.
Field, tool have been widely used.
Therefore the heat exchanger run under the stronger environment of corrosivity, its inside are typically all made of PTFE heat exchanger tubes, so
And as high performance plastics, PTFE material can not melting extrusion, because the property of material also is difficult to other materials (such as
Metal material) mutually splicing or very high intensity is kept during slitless connection.At present, metal in PTFE heat exchanger tubes and heat exchanger is spent
The connected mode commonly used between plate on the inwall of mounting hole 2 of metal card 1 as shown in figure 1, be provided with a few road grooves 3, general
After PTFE heat exchanger tubes 4 are put into mounting hole 2, by the way of being expanded in PTFE heat exchanger tubes 4, by the tube wall of PTFE heat exchanger tubes 4
Outwardly against to being attached in groove 3, because metal card 1 and PTFE heat exchanger tubes 4 are two kinds of unlike materials, there is heat expansion
During shrinkage phenomenon, its internal particle (atom) motion is different, therefore the amplitude expanded with heat and contract with cold of two kinds of materials is also different, therefore
After phenomenon of expanding with heat and contract with cold is repeated multiple times, makes easily to come off between metal card 1 and PTFE heat exchanger tubes 4, cause heat exchanger failure, no
It can for a long time be operated, need to periodically be safeguarded.
Utility model content
For drawbacks described above present in prior art, the purpose of this utility model is to provide PTFE in a kind of heat exchanger and changed
Heat pipe end fixed structure, effective connection of the PTFE heat exchanger tubes in heat exchanger can be realized.
To achieve the above object, the utility model adopts the following technical scheme that：
PTFE tube ends fixed structure in a kind of heat exchanger, including metal card and PTFE heat exchanger tubes, metal card
Several mounting holes are provided with, PTFE heat exchanger tubes are equipped with a PTFE material in mounting hole in described each mounting hole
Inner sleeve is connected, PTFE tube ends are located in connection inner sleeve and are connected to a fixed with being connected inner sleeve by hot melt,
Connection inner sleeve upper end is provided with external screw thread and passes mounting hole, and lower end also passes mounting hole and sets L-shaped flange, connects inner sleeve
Pipe upper end is additionally provided with a clamp nut, and clamp nut compresses by screwed on connection inner sleeve upper end and by metal card
It is fixed between clamp nut and L-shaped flange.
Anti-corrosion layer is also covered with described metal card inner surface.
Described anti-corrosion layer is PTFE film.
Described fastening bolt is PTFE material.
Hot melt wlding is additionally provided between described connection inner sleeve and PTFE heat exchanger tubes.
Sealing ring is equipped between described clamp nut and metal card, between metal card and L-shaped flange.
In above-mentioned technical scheme, PTFE tube end fixed knots in a kind of heat exchanger provided by the utility model
Structure, make the connection between metal card and PTFE heat exchanger tubes more firm, stable and reliable.Can be efficiently applied to such as high temperature,
Sealed connection between the PTFE heat exchanger tubes and metal card of heat exchanger under high corrosion operating mode, be not only able to it is cost-effective, and
And sealing intensity is also greatly improved, extend the service life of equipment.
Brief description of the drawings
Fig. 1 is a kind of structural representation of connected mode of prior art；
Fig. 2 is structural representation of the present utility model；
Fig. 3 is that the structural representation that hot melt wlding is placed between inner sleeve and PTFE heat exchanger tubes is connected in the utility model
Figure.
Embodiment
The technical solution of the utility model is further illustrated with reference to the accompanying drawings and examples.
Incorporated by reference to shown in Fig. 2 and Fig. 3, PTFE tube end fixed knots in a kind of heat exchanger provided by the utility model
Structure, including metal card 10 and PTFE heat exchanger tubes 11, metal card are provided with several mounting holes, and PTFE heat exchanger tubes 11 are located at installation
In hole, above-mentioned is prior art part, is just repeated no more herein.Unlike the prior art, in described each mounting hole
The connection inner sleeve 12 of a PTFE material is equipped with, the end of PTFE heat exchanger tubes 11 is located in connection inner sleeve 12, PTFE material
Not only there is etch-proof characteristic so that connection inner sleeve 12 is identical with the material of PTFE heat exchanger tubes 11, also allows for connecting inner sleeve
It is connected to a fixed between pipe 12 and PTFE heat exchanger tubes 11 by hot melt, heat fusion joint connects inner sleeve 12 typically at 325 DEG C ± 10 DEG C
Upper end is provided with external screw thread and passes mounting hole, and lower end also passes mounting hole and sets L-shaped flange 121, connects on inner sleeve 12
End is additionally provided with a clamp nut 13, and clamp nut 13 is by screwed behind connection inner sleeve 12 upper end and by metal card 10
It is pressed abd fixed between clamp nut 13 and L-shaped flange 121, and between clamp nut 13 and metal card 10 and metal
Sealing ring 14 is equipped between card 10 and L-shaped flange 121, when the end of PTFE heat exchanger tubes 11 is fixed on connection inner sleeve
After in 12 so that all in a kind of sealing structure state inside heat exchanger, smoke spillage inside heat exchanger can be prevented to changing
The outside of hot device.
Preferably, being also covered with anti-corrosion layer 101 on the described inner surface of metal card 10, anti-corrosion layer 101 is PTFE
Film, the metal material of metal card 10 is prevented by the flue gas corrosion inside heat exchanger, so as to extend the service life of equipment.
Preferably, described fastening bolt 13 is PTFE material, it is between clamp nut 13 and connection inner sleeve 12 upper end
Threaded connection, after fastening bolt 13 is tightened, it on the one hand can prevent that connect inner sleeve 12 slides out of mounting hole, on the other hand
The L-shaped flange 121 of the lower end of connection inner sleeve 12 can also be made to be close to the surface of metal card 10, so as to compress two sealings again
Circle 14, a sealing structure is formed, the smoke spillage inside heat exchanger can be prevented to the outside of heat exchanger, from PTFE material
Fastening bolt 13 can further prevent fastening bolt 13 by flue gas corrosion.
Preferably, being additionally provided with hot melt wlding 5 between described connection inner sleeve 12 and PTFE heat exchanger tubes 10, wlding 5 is heated
For FEP, PFA or ETFE, first hot melt wlding 5 is put into connection inner sleeve 12, then the end of PTFE heat exchanger tubes 10 is put into heat
In melting welding material 5, PTFE heat exchanger tubes 10 are fastened in connection inner sleeve 12 by heating wlding 5, the heat fusion joint one of which
As at 265 DEG C ± 10 DEG C.
Using the method for PTFE tube end fixed structures in a kind of heat exchanger provided by the utility model, in metal
The connection inner sleeve of a PTFE material is respectively mounted in each mounting hole on card, connection inner sleeve upper end passes mounting hole, and
External screw thread is being set provided with connection inner sleeve upper end, connection inner sleeve lower end also passes mounting hole and sets L-shaped flange, will
PTFE tube ends are located in connection inner sleeve and are connected to a fixed with being connected inner sleeve by hot melt, then in connection inner sleeve
A clamp nut is screwed on the external screw thread of pipe upper end, by tighten clamp nut by metal card be pressed abd fixed on clamp nut with
Between L-shaped flange, a sealing ring is placed between clamp nut and metal card, between metal card and L-shaped flange.
In summary, the utility model is made by being improved to connected mode between PTFE heat exchanger tubes and metal card
It is more firm to obtain the connection of PTFE heat exchanger tubes and metal card, while there is anticorrosion, the function of anti-leak again, suitable for all
The use of heat exchanger.
Those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to illustrate that this practicality is new
Type, and be not used as to restriction of the present utility model, as long as in spirit of the present utility model, to described above
Change, the modification of embodiment will all fall in Claims scope of the present utility model.
Claims (6)
1. PTFE tube ends fixed structure in a kind of heat exchanger, including metal card and PTFE heat exchanger tubes, on metal card
Provided with several mounting holes, PTFE heat exchanger tubes are in mounting hole, it is characterised in that are equipped with one in described each mounting hole
The connection inner sleeve of PTFE material, PTFE tube ends are located in connection inner sleeve and with being connected inner sleeve by heating phase
It is connected, connection inner sleeve upper end is provided with external screw thread and passes mounting hole, and lower end also passes mounting hole and sets L-shaped turn over
Side, connection inner sleeve upper end are additionally provided with a clamp nut, and clamp nut on connection inner sleeve upper end and is incited somebody to action by screwed
Metal card is pressed abd fixed between clamp nut and L-shaped flange.
2. PTFE tube end fixed structures in a kind of heat exchanger as claimed in claim 1, it is characterised in that described gold
Anti-corrosion layer is also covered with category card inner surface.
3. PTFE tube end fixed structures in a kind of heat exchanger as claimed in claim 2, it is characterised in that described is resistance to
Corrosion layer is PTFE film.
4. PTFE tube end fixed structures in a kind of heat exchanger as claimed in claim 1, it is characterised in that described is tight
Fixing bolt is PTFE material.
5. PTFE tube end fixed structures in a kind of heat exchanger as claimed in claim 1, it is characterised in that described company
Connect and hot melt wlding is additionally provided between inner sleeve and PTFE heat exchanger tubes.
6. PTFE tube end fixed structures in a kind of heat exchanger as claimed in claim 1, it is characterised in that described is tight
Gu it is equipped with sealing ring between nut and metal card, between metal card and L-shaped flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720463095.XU CN206787369U (en) | 2017-04-28 | 2017-04-28 | PTFE tube ends fixed structure in a kind of heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720463095.XU CN206787369U (en) | 2017-04-28 | 2017-04-28 | PTFE tube ends fixed structure in a kind of heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206787369U true CN206787369U (en) | 2017-12-22 |
Family
ID=60709653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720463095.XU Active CN206787369U (en) | 2017-04-28 | 2017-04-28 | PTFE tube ends fixed structure in a kind of heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206787369U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949776A (en) * | 2017-04-28 | 2017-07-14 | 上海金由氟材料股份有限公司 | PTFE tube ends fixed structure and method in a kind of heat exchanger |
| TWI648511B (en) * | 2018-03-09 | 2019-01-21 | 麗鴻科技股份有限公司 | Heat exchanger heat pipe envelope |
| CN110207531A (en) * | 2019-06-18 | 2019-09-06 | 衢州佰强新材料科技有限公司 | A kind of limit sleeve for preventing precoated metal periosteum from giving up the throne |
| CN111288834A (en) * | 2020-04-13 | 2020-06-16 | 御隆膜科技南通有限公司 | Prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure and installation method |
| CN111288835A (en) * | 2020-04-13 | 2020-06-16 | 御隆膜科技南通有限公司 | Prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure and installation method |
| CN111486741A (en) * | 2020-04-22 | 2020-08-04 | 御隆膜科技南通有限公司 | Connecting structure of prefabricated joint type fluoroplastic heat exchange tube and tube plate and installation method thereof |
-
2017
- 2017-04-28 CN CN201720463095.XU patent/CN206787369U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106949776A (en) * | 2017-04-28 | 2017-07-14 | 上海金由氟材料股份有限公司 | PTFE tube ends fixed structure and method in a kind of heat exchanger |
| TWI648511B (en) * | 2018-03-09 | 2019-01-21 | 麗鴻科技股份有限公司 | Heat exchanger heat pipe envelope |
| EP3550249A1 (en) * | 2018-03-09 | 2019-10-09 | Li-Hong Science & Technology Co., Ltd. | Heat pipe envelope of heat exchanger |
| CN110207531A (en) * | 2019-06-18 | 2019-09-06 | 衢州佰强新材料科技有限公司 | A kind of limit sleeve for preventing precoated metal periosteum from giving up the throne |
| CN111288834A (en) * | 2020-04-13 | 2020-06-16 | 御隆膜科技南通有限公司 | Prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure and installation method |
| CN111288835A (en) * | 2020-04-13 | 2020-06-16 | 御隆膜科技南通有限公司 | Prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure and installation method |
| CN111288835B (en) * | 2020-04-13 | 2021-08-17 | 御隆膜科技南通有限公司 | Prefabricated joint type fluoroplastic heat exchange tube and tube plate connecting structure and installation method |
| CN111486741A (en) * | 2020-04-22 | 2020-08-04 | 御隆膜科技南通有限公司 | Connecting structure of prefabricated joint type fluoroplastic heat exchange tube and tube plate and installation method thereof |
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