CN206300538U - The sealing structure that a kind of detachable tantalum heat exchanger tube is connected with tetrafluoro tube sheet - Google Patents
The sealing structure that a kind of detachable tantalum heat exchanger tube is connected with tetrafluoro tube sheet Download PDFInfo
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- CN206300538U CN206300538U CN201621334456.2U CN201621334456U CN206300538U CN 206300538 U CN206300538 U CN 206300538U CN 201621334456 U CN201621334456 U CN 201621334456U CN 206300538 U CN206300538 U CN 206300538U
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- China
- Prior art keywords
- heat exchanger
- tube
- tube sheet
- wedge
- exchanger tube
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- 229910052715 tantalum Inorganic materials 0.000 title claims abstract description 22
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 238000007789 sealing Methods 0.000 title claims abstract description 20
- 239000011148 porous material Substances 0.000 claims abstract description 8
- 230000008859 change Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000005562 Glyphosate Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000013536 elastomeric material Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- XDDAORKBJWWYJS-UHFFFAOYSA-N glyphosate Chemical compound OC(=O)CNCP(O)(O)=O XDDAORKBJWWYJS-UHFFFAOYSA-N 0.000 description 1
- 229940097068 glyphosate Drugs 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The sealing structure that a kind of detachable tantalum heat exchanger tube of the utility model is connected with tetrafluoro tube sheet belongs to the technical field of shell-and-tube heat exchanger；Technical problem to be solved is：The sealing structure that a kind of detachable tantalum heat exchanger tube is connected with tetrafluoro tube sheet is provided, housing convenient maintenance and replacement, heat exchanger tube is reused, reduce loss cost, and good sealing effect；The technical scheme for using for：The sealing structure that a kind of detachable tantalum heat exchanger tube is connected with tetrafluoro tube sheet, including tube sheet, heat exchanger tube, pad and wedge-shaped clamp, heat exchanger tube one end is sleeved in the pore of tube sheet by expanded joint, pore one end of tube sheet is provided with seal groove, pad and wedge-shaped clamp are set with heat exchanger tube, wedge-shaped clamp is connected through a screw thread and is fixedly mounted in seal groove, and the pad passes through wedge-shaped clamp and extrude to be fixed on the seal groove inside and realize being reliably connected for tube sheet and heat exchanger tube；The utility model is mainly used in the connection sealing of structure is special, value is expensive and cannot weld tube sheet, heat exchanger tube.
Description
Technical field
The utility model belongs to the technical field of shell-and-tube heat exchanger, and in particular to the connection of tantalum heat exchanger tube and tetrafluoro tube sheet
Sealing.
Background technology
With the development of society, environmental issue increasingly turns into social concerns with the problem paid attention to, and the blowdown of agrochemical industry is asked
Topic is paid close attention to by the public.Certain company responds policy, and sulfuric acid in glyphosate production sewage etc. is processed back
Receive, wherein certain model shell-and-tube heat exchanger is one of key equipment in concentrated sulfuric acid removal process.
Tube bank of the shell-and-tube heat exchanger by housing and comprising many pipes is constituted, and is entered by tube wall between cold and hot fluid
The heat exchanger of row heat exchange.The connection sealing of exchanger tubes and tubesheets is the key technology of the kind equipment, and connection is using expanded joint, weldering at present
Connect or expanded joint+welding structure, be non-dismountable structure.And heat exchanger shell is by rapid wear and corrosion resistant nonmetallic materials system
Make, it is necessary to often change and repair, thus when need to change shell situation occur when, it is necessary to take removal partial-length heat exchanger tube
Mode is completed, and heat exchange area deficiency, tube sheet can be caused to scrap.
Because the concentrated sulfuric acid has very strong corrosive nature, most metals material cannot meet technological requirement.Tantalum is described as
The best metal of corrosion resistance, using excellent corrosion resistance is shown on petrochemical industry equipment, so as to receive height
Concern.The heat exchanger structure that thus be accordingly used in concentrated sulfuric acid recovery is very special, and inside tube bank is made up of expensive tantalum material,
But its one end tube sheet is PTFE, it is impossible to carry out welded seal with tantalum heat exchanger tube.
Utility model content
The utility model overcomes the shortcomings of that prior art is present, and technical problem to be solved is：There is provided a kind of detachable
The sealing structure that formula tantalum heat exchanger tube is connected with tetrafluoro tube sheet, housing convenient maintenance and replacement, heat exchanger tube reuse, reduce loss into
This, and good sealing effect.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of detachable tantalum heat exchanger tube
The sealing structure being connected with tetrafluoro tube sheet, including tube sheet, heat exchanger tube, pad and wedge-shaped clamp, heat exchanger tube one end passes through expanded joint set
In the pore of tube sheet, pore one end of the tube sheet is provided with seal groove, and pad and wedge-shaped clamp, institute are set with heat exchanger tube
State wedge-shaped clamp and be connected through a screw thread and be fixedly mounted in seal groove, and the pad pass through wedge-shaped clamp extrude be fixed on it is described
Simultaneously realize that tube sheet is tightly connected with the reliability of heat exchanger tube in seal groove inside.
The heat exchanger tube is tantalum heat exchanger tube, and the tube sheet is tetrafluoro tube sheet.
The pad is inner-outer sleeve tubular type two-layer pad piece, pad and the wedge shape end face that is in contact of clamp be provided with V-arrangement wedge groove and
The V-arrangement wedge groove is symmetrically arranged domatic composition on double-deck pad, and wedge-shaped clamp is provided with and is engaged with the V-arrangement wedge groove of pad
V-arrangement wedge.
The pad is RPTFE pads.
The utility model has the advantages that compared with prior art：For the expensive heat exchange of special construction, value
Device, the connection of exchanger tubes and tubesheets takes dismountable screw connection structure, and is compressed and swollen pad using wedge-shaped clamp
Tetrafluoro tube sheet wall and heat exchange tube wall extruding laminating are opened to, the double action being reliably connected with sealing is finally reached.
Brief description of the drawings
The utility model is described in more detail below in conjunction with the accompanying drawings；
The structural representation that Fig. 1 is provided for the utility model；
Fig. 2 is the cross section structure schematic diagram of wedge-shaped clamp in the utility model；
Fig. 3 is the cross section structure schematic diagram of pad in the utility model；
In figure：1 is tube sheet, and 2 is heat exchanger tube, and 3 is pad, and 4 is wedge-shaped clamp.
Specific embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, is clearly and completely described, it is clear that retouched to the technical scheme in the utility model embodiment
The embodiment stated is a part of embodiment of the present utility model, rather than whole embodiments；Based on the reality in the utility model
Example is applied, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made all belongs to
In the scope of the utility model protection.
The structural representation that Fig. 1 is provided for the utility model, Fig. 2-3 is respectively wedge-shaped clamp and pad in the utility model
Cross section structure schematic diagram.
As shown in figure 1, the sealing structure that a kind of detachable tantalum heat exchanger tube is connected with tetrafluoro tube sheet, including tube sheet 1, heat exchange
Pipe 2, pad 3 and wedge-shaped clamp 4, one end of heat exchanger tube 2 are sleeved in the pore of tube sheet 1 by expanded joint, the pore one of the tube sheet 1
End is provided with seal groove, and pad 3 and wedge-shaped clamp 4 are set with heat exchanger tube 2, and the wedge-shaped clamp 4 is connected through a screw thread fixed peace
In seal groove, and the pad 3 passes through the wedge-shaped extruding of clamp 4 and is fixed on the seal groove inside and realizes tube sheet 1 and change
The reliability of heat pipe 2 is tightly connected.
The heat exchanger tube 2 is tantalum heat exchanger tube, and the tube sheet 1 is tetrafluoro tube sheet.
Preferably, as shown in Fig. 2 the pad 3 is inner-outer sleeve tubular type two-layer pad piece, pad 3 is in contact with wedge-shaped clamp 4
End face to be provided with V-arrangement wedge groove and the V-arrangement wedge groove be symmetrically arranged domatic composition on double-deck pad, as shown in figure 3, wedge-shaped card
Son 4 is provided with the V-arrangement wedge being engaged with the V-arrangement wedge groove of pad 3.
The pad 3 is RPTFE pads, i.e. Tetrafluoro spacer, with the spy such as high temperature resistant, low temperature resistant, corrosion-resistant, ageing-resistant
Point.
The utility model takes detachably for the expensive heat exchanger of special construction, value to tube sheet 1 and heat exchanger tube 2
Screw connection structure, pad by threaded pre-tightening, compressed using wedge-shaped clamp and distending be to tetrafluoro tube sheet wall and heat exchange tube wall
Extruding laminating efficiently solves the problems, such as that tetrafluoro tube sheet is connected and seals with tantalum heat exchanger tube so as to reach the effect that side seals,
So as to realize the function of heat exchanger, due to structure detachability, the consumption of tantalum material is reduced, and it is reusable to reach tantalum tube bank
Purpose, is that development, the popularization of such extraordinary heat exchanger are laid a good foundation.
In order to verify the utility model reliability of structure, simulation model is manufactured, and carried out the 0.3MPa water of routine
Pressure experiment and 220 DEG C of Hot gas cyclic tests, leakage is not found, has reached sealing effectiveness.
Finally it should be noted that：Above example is only used to illustrate the technical solution of the utility model, rather than its limitations；
Although being described in detail to the utility model with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in previous embodiment, or to which part or all technical characteristic
Carry out equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from the utility model embodiment
The scope of technical scheme.For example：Pad 3 in the utility model can also be made of the elastomeric material of corrosion-and high-temp-resistant,
As long as it horizontal distending and can realize the fixed function of sealing after being extruded.
Claims (4)
1. the sealing structure that a kind of detachable tantalum heat exchanger tube is connected with tetrafluoro tube sheet, it is characterised in that：Including tube sheet (1), change
Heat pipe (2), pad (3) and wedge-shaped clamp (4), heat exchanger tube (2) one end is sleeved in the pore of tube sheet (1) by expanded joint, described
Pore one end of tube sheet (1) is provided with seal groove, and pad (3) and wedge-shaped clamp (4), the wedge-shaped card are set with heat exchanger tube (2)
Sub (4) are connected through a screw thread and are fixedly mounted in seal groove, and the pad (3) is extruded by wedge-shaped clamp (4) and is fixed on institute
State seal groove inside and realize that tube sheet (1) is tightly connected with the reliability of heat exchanger tube (2).
2. the sealing structure that a kind of detachable tantalum heat exchanger tube according to claim 1 is connected with tetrafluoro tube sheet, its feature
It is：The heat exchanger tube (2) is tantalum heat exchanger tube, and the tube sheet (1) is tetrafluoro tube sheet.
3. the sealing structure that a kind of detachable tantalum heat exchanger tube according to claim 1 and 2 is connected with tetrafluoro tube sheet, it is special
Levy and be：The pad (3) is inner-outer sleeve tubular type two-layer pad piece, and the end face that pad (3) is in contact with wedge-shaped clamp (4) is provided with V
Shape wedge groove and the V-arrangement wedge groove are symmetrically arranged domatic composition on double-deck pad, and wedge-shaped clamp (4) is provided with and pad (3)
The V-arrangement wedge that is engaged of V-arrangement wedge groove.
4. the sealing structure that a kind of detachable tantalum heat exchanger tube according to claim 3 is connected with tetrafluoro tube sheet, its feature
It is：The pad (3) is RPTFE pads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621334456.2U CN206300538U (en) | 2016-12-07 | 2016-12-07 | The sealing structure that a kind of detachable tantalum heat exchanger tube is connected with tetrafluoro tube sheet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621334456.2U CN206300538U (en) | 2016-12-07 | 2016-12-07 | The sealing structure that a kind of detachable tantalum heat exchanger tube is connected with tetrafluoro tube sheet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206300538U true CN206300538U (en) | 2017-07-04 |
Family
ID=59213378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621334456.2U Active CN206300538U (en) | 2016-12-07 | 2016-12-07 | The sealing structure that a kind of detachable tantalum heat exchanger tube is connected with tetrafluoro tube sheet |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206300538U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111672994A (en) * | 2020-07-06 | 2020-09-18 | 珠海格力智能装备有限公司 | Clamping mechanism and pipe expander with same |
-
2016
- 2016-12-07 CN CN201621334456.2U patent/CN206300538U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111288834B (en) * | 2020-04-13 | 2021-08-31 | 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 |
| CN111672994A (en) * | 2020-07-06 | 2020-09-18 | 珠海格力智能装备有限公司 | Clamping mechanism and pipe expander with same |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |