CN106112382B - A kind of double tube plate heat exchanger leak stopping maintaining structure and method for maintaining - Google Patents
A kind of double tube plate heat exchanger leak stopping maintaining structure and method for maintaining Download PDFInfo
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- CN106112382B CN106112382B CN201610577273.1A CN201610577273A CN106112382B CN 106112382 B CN106112382 B CN 106112382B CN 201610577273 A CN201610577273 A CN 201610577273A CN 106112382 B CN106112382 B CN 106112382B
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- Prior art keywords
- tube
- pull bar
- tube sheet
- sleeve
- sheet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of double tube plate heat exchanger leak stopping maintaining structure and method for maintaining, the structure includes first tube sheet and the second tube sheet of heat exchanger one end, is provided with tube bank between the two, the second tube sheet is close to heat exchanger shell middle part, it is characterised in that：Support tube is installed in tube bank, pull bar is installed in support tube, packing layer is provided with the tube bank at the second tube sheet, pull bar is by the end compression packing layer at the second tube sheet；Internal thread is provided with the support tube, the outside of pull bar is provided with external screw thread, and internal thread is engaged with external screw thread.Its by pull bar and support tube between screw thread pair caused by force compresses packing layer, clog heat exchange pipeline using the deformation of packing layer, two cavitys separated, solves the problems, such as medium among shell by restraining the cavity between two tube sheets.
Description
Technical field
The present invention relates to double tube plate heat exchanger to repair field, specially a kind of double tube plate heat exchanger leak stopping maintaining structure and dimension
Repair method.
Background technology
After the tube bank of double tube plate heat exchanger device is cracked, if repaired using conventional method, i.e., sealed using both ends plug
It is stifled, it is impossible to solve the problems, such as the medium among shell by restraining the cavity entered between two tube sheets.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of double tube plate heat exchanger leak stopping maintaining structure and method for maintaining,
It can effectively prevent the medium among shell by restraining the cavity entered between two tube sheets.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of double tube plate heat exchanger leak stopping maintenance
Structure, include first tube sheet and the second tube sheet of heat exchanger one end, tube bank is installed between the two, the second tube sheet is close to heat exchanger
Shell middle part, it is characterised in that：Support tube is installed in tube bank, pull bar is installed in support tube, the pipe at the second tube sheet
Packing layer is provided with beam, pull bar compresses packing layer by the end at the second tube sheet；Internal thread is provided with the support tube, pull bar
Outside is provided with external screw thread, and internal thread is engaged with external screw thread.
The length of the support tube is equal to the distance between the first tube sheet and the second tube sheet, and the length of pull bar is than the first tube sheet
The distance between second tube sheet long 30-50mm.The length of control support tube is able to ensure that the position of packing layer just second
The position of tube sheet, and the length of pull bar is relatively long, facilitates the rotation of pull bar in compaction process.
The interlude of the support tube is stainless steel tube, and the both ends of stainless steel tube are punished close to the first tube sheet and the second tube sheet
The first sleeve and second sleeve are not connected with；Internal thread is provided with first sleeve, pull bar is provided with external screw thread by the first tube sheet end.Will
It is due to that support tube length depends on the distance between two tube sheets that support tube, which is designed as three-stage, and diameter is depended in heat exchanger tube
Footpath, whole support tube is thin and grows, and overall processing acquires a certain degree of difficulty and is easily deformed, and the purpose one for being divided into three-stage is easy for adding
Work, second, drawing rod via two end fixes support, interlude has certain gap with pull bar, even if pull bar or support tube have necessarily
Deformation, do not interfere with the rotation of pull bar yet.
First sleeve and the external diameter of second sleeve are more than the external diameter of stainless steel tube, less than the internal diameter of tube bank；First set
Cylinder and the internal diameter of second sleeve are more than the external diameter of pull bar.
First sleeve and the external diameter of second sleeve are more than the external diameter 0.5mm of stainless steel tube, less than the internal diameter of tube bank
0.5mm；First sleeve and the internal diameter of second sleeve are more than the external diameter 0.5mm of pull bar.Ensure installation when can guarantee that smooth peace
It is attached within tube bank, and gap is unlikely to too big again, ensures that filler can be filled effectively.
It is square end face that the pull bar is machined with section by the end of the first tube sheet；It is easy to pull bar to rotate.
Described filler layer is tetrafluoro flaggy, and spacer layer is additionally provided between support tube and packing layer.It is promoted effectively to seal.
The invention further relates to, to double tube plate heat exchanger leak stopping method for maintaining, concretely comprised the following steps using said structure：
First according to the distance between the first tube sheet and the second tube sheet and the size processing pull rod and support tube of tube bank, then make
Make packing layer, packing layer and pull bar and support tube are set with place, then weld the one end of support tube by the first tube sheet with tube bank
Connect, last rotating tension bar, by pull bar and support tube between screw thread coordinate caused by the strength of screw thread pair compress and press
Tight packing layer, complete leak stopping maintenance.Further, after compressing packing layer, pull bar is cut into concordant with the first tube sheet, and welded
It is fixed.
The present invention structure by pull bar and support tube between screw thread pair caused by force compresses packing layer, utilize filler
The deformation filling heat exchange pipeline of layer, two cavitys are separated, and are solved the medium among shell and are entered by tube bank between two tube sheets
The problem of cavity.
The maintenance difficult point of double tube plate heat exchanger is to obstruct the flow of media in the second tubesheet location heat exchanger tube, can not such as solved
Tube bank or integral replacing heat exchanger can only be certainly changed, it is blocked using the leak stopping maintenance rod of said structure, can be a large amount of
Shorten maintenance time, reduce maintenance cost, reduce the environmental pollution that leakage is brought.
Brief description of the drawings
Fig. 1 is the structural representation that the present invention provides maintaining structure.
Embodiment
With reference to embodiment, the present invention is furture elucidated.These embodiments be interpreted as being merely to illustrate the present invention and
It is not intended to limit the scope of the invention.After the content of the invention recorded has been read, those skilled in the art can be with
The present invention is made various changes or modifications, these equivalence changes and modification equally fall into the model that claims of the present invention is limited
Enclose.
Embodiment 1：
As shown in figure 1, a kind of double tube plate heat exchanger leak stopping maintaining structure, including first tube sheet 1 of heat exchanger one end and
Two tube sheets 2, tube bank 3 is installed between the two, the second tube sheet 2 is close to heat exchanger shell middle part, it is characterised in that：Tube bank 3
Support tube 4 is inside installed, pull bar 5 is installed in support tube, is provided with packing layer 6 in the tube bank 3 at the second tube sheet 2, pull bar 5 leans on the
End at two tube sheets 2 compresses packing layer 6；Internal thread is provided with the support tube 4, the outside of pull bar 5 is provided with external screw thread, interior spiral shell
Line is engaged with external screw thread.
Further, the length of the support tube 4 is equal to the distance between the first tube sheet 1 and the second tube sheet 2, pull bar 5
Length is than the long 30-50mm of the distance between the first tube sheet 1 and the second tube sheet 2.
Further, the interlude of the support tube 4 is stainless steel tube 41, and the both ends of stainless steel tube are close to the first tube sheet 1
With the first sleeve 42 and second sleeve 43 are connected at the second tube sheet 2；Internal thread is provided with first sleeve 42, pull bar 5 leans on
The end of first tube sheet 1 is provided with external screw thread.
Further, first sleeve 42 and the external diameter of second sleeve 43 are more than the external diameter of stainless steel tube 41, less than pipe
The internal diameter of beam 3；First sleeve 42 and the internal diameter of second sleeve 43 are more than the external diameter of pull bar 5.
Further, first sleeve 42 and the external diameter of second sleeve 43 are more than the external diameter 0.5mm of stainless steel tube 41, small
In the internal diameter 0.5mm of tube bank 3；First sleeve 42 and the internal diameter of second sleeve 43 are more than the external diameter 0.5mm of pull bar 5.
Further, it is square end face that the pull bar 5 is machined with section by the end of the first tube sheet 1.
Further, described filler layer is tetrafluoro flaggy, and spacer layer is additionally provided between support tube 4 and packing layer 6.
Using described structure to double tube plate heat exchanger leak stopping method for maintaining, it is characterised in that concretely comprise the following steps：
First according to the distance between the first tube sheet and the second tube sheet and the size processing pull rod and support tube of tube bank, then make
Make packing layer, packing layer and pull bar and support tube are set with place, then weld the one end of support tube by the first tube sheet with tube bank
Connect, last rotating tension bar, by pull bar and support tube between screw thread coordinate caused by the strength of screw thread pair compress and press
Tight packing layer, complete leak stopping maintenance.
Further, after compressing packing layer, pull bar is cut into concordant with the first tube sheet, and be welded and fixed.
Embodiment 2：
1st, after the tube bank of double tube plate heat exchanger device is cracked, the tube sheet of heat exchanger one end two is made clear by drawing first
The distance between；The length for being further added by 30-50mm is L.Because various heat exchange device tube bank specification is different, leak stopping maintenance rod can only
Processed by restraining internal diameter, now by taking internal diameter Ф 20mm tube bank as an example.Processing external diameter is Ф 19.5mm, and thickness is 15mm circle
Two, post, it is one of among processing M12 screw thread, obtain the first sleeve, processing Ф 12mm through holes among another, obtain the
Two sleeves；Take one section of Ф 18mm stainless steel tubes, length L-30mm；The first sleeve and second sleeve of processing are respectively welded at
Stainless steel tube both ends, support tube complete；Process a diameter of Ф 11.5mm, length L+60mm.And there are M12 screw threads one end
Pull bar, also can be directly from meeting the screw mandrel of size, and the cube for having the end face by the first tube sheet to process 8 ╳ 8 is easy to draw
Bar rotates, and pull bar completes.
2nd, packing layer is made using tetrafluoro plate, while it is Ф 11.5mm to prepare internal diameter, external diameter is that Ф 20mm pad is some.
3rd, each parts of processing are combined, the thickness of tetrafluoro plate packing layer is about 30mm.
4th, in the heat exchanger tube that the device to combine press-in needs repairing, support tube is concordant with the first tube sheet end face, and
Outer ring is all welded.
5th, rotating rod, packing layer is extruded, the mesh of closure is reached using the deformation filling heat exchange pipeline of pad and spice layer
, heat exchanger tube is separated in the position of the second tube sheet, the medium among such shell would not by tube bank enter two tube sheets it
Between cavity.
6th, the unnecessary pull bar of stretching is cut away, and welded permanent locking to carry out.
Claims (9)
1. a kind of double tube plate heat exchanger leak stopping maintaining structure, include first tube sheet of heat exchanger one end（1）With the second tube sheet（2）,
Tube bank is installed between the two（3）, the second tube sheet（2）Close to heat exchanger shell middle part, it is characterised in that：Tube bank（3）It is interior
Support tube is installed（4）, pull bar is installed in support tube（5）, the second tube sheet（2）The tube bank at place（3）It is interior to be provided with packing layer（6）,
Pull bar（5）By the second tube sheet（2）The end at place compresses packing layer（6）；The support tube（4）It is interior to be provided with internal thread, pull bar（5）'s
Outside is provided with external screw thread, and internal thread is engaged with external screw thread.
2. structure according to claim 1, it is characterised in that：The support tube（4）Length be equal to the first tube sheet（1）With
Second tube sheet（2）The distance between, pull bar（5）Length than the first tube sheet（1）With the second tube sheet（2）The distance between long 30-
50mm。
3. structure according to claim 1, it is characterised in that：The support tube（4）Interlude be stainless steel tube（41）,
The both ends of stainless steel tube are close to the first tube sheet（1）One end be connected with the first sleeve（42）, close to the second tube sheet（2）One end connect
It is connected to second sleeve（43）；First sleeve（42）It is interior to be provided with internal thread, pull bar（5）By the first tube sheet（1）End is provided with external screw thread.
4. structure according to claim 3, it is characterised in that：First sleeve（42）And second sleeve（43）External diameter
More than stainless steel tube（41）External diameter, less than tube bank（3）Internal diameter；First sleeve（42）And second sleeve（43）Internal diameter be more than
Pull bar（5）External diameter.
5. structure according to claim 4, it is characterised in that：First sleeve（42）And second sleeve（43）External diameter
More than stainless steel tube（41）External diameter 0.5mm, less than tube bank（3）Internal diameter 0.5mm；First sleeve（42）And second sleeve（43）
Internal diameter be more than pull bar（5）External diameter 0.5mm.
6. structure according to claim 1, it is characterised in that：The pull bar（5）By the first tube sheet（1）End be machined with
Section is square end face.
7. structure according to claim 1, it is characterised in that：Described filler layer is tetrafluoro flaggy, support tube（4）With filler
Layer（6）Between be additionally provided with spacer layer.
8. using the structure described in claim 1-7 any one to double tube plate heat exchanger leak stopping method for maintaining, it is characterised in that
Concretely comprise the following steps：
First according to the distance between the first tube sheet and the second tube sheet and the size processing pull rod and support tube of tube bank, then make and fill out
The bed of material, packing layer and pull bar and support tube are set with place, then welded the one end of support tube by the first tube sheet with tube bank, most
Rotating tension bar afterwards, packing layer is compressed and compressed by strength caused by the screw thread cooperation between pull bar and support tube, is completed stifled
Leakage maintenance.
9. according to the method for claim 8, it is characterised in that：After compressing packing layer, pull bar is cut into and the first tube sheet
Concordantly, and it is welded and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610577273.1A CN106112382B (en) | 2016-07-21 | 2016-07-21 | A kind of double tube plate heat exchanger leak stopping maintaining structure and method for maintaining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610577273.1A CN106112382B (en) | 2016-07-21 | 2016-07-21 | A kind of double tube plate heat exchanger leak stopping maintaining structure and method for maintaining |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106112382A CN106112382A (en) | 2016-11-16 |
| CN106112382B true CN106112382B (en) | 2017-12-08 |
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ID=57289287
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610577273.1A Active CN106112382B (en) | 2016-07-21 | 2016-07-21 | A kind of double tube plate heat exchanger leak stopping maintaining structure and method for maintaining |
Country Status (1)
| Country | Link |
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| CN (1) | CN106112382B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0343242A1 (en) * | 1987-03-11 | 1989-11-29 | NAUCHNO-ISSLEDOVATELSKY INSTITUT TEKHNOLOGII AVTOMOBILNOI PROMYSHLENNOSTI (NIITavtoprom) | Method of restoration of worn side surfaces of bushing-type parts |
| CN200943800Y (en) * | 2006-09-04 | 2007-09-05 | 刘兴山 | Plugging tool for tube bundle leakage |
| CN101204770B (en) * | 2007-01-15 | 2011-07-27 | 北京安科管道工程科技有限公司 | Pressure structure clamp and fiber compound material combined reinforcement technology |
| CN101368659A (en) * | 2007-08-16 | 2009-02-18 | 中冶宝钢技术服务有限公司 | Method for mending circulating pipe |
| CN202071050U (en) * | 2011-04-29 | 2011-12-14 | 沈阳石蜡化工有限公司 | Tube bundle plugging tool of air cooler |
| CN104075071A (en) * | 2014-07-01 | 2014-10-01 | 大连福佳·大化石油化工有限公司 | Air cooler tapping leakage stopper |
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2016
- 2016-07-21 CN CN201610577273.1A patent/CN106112382B/en active Active
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| CN106112382A (en) | 2016-11-16 |
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