CN205545989U - But disconnect electrothermal tube and tube sheet structure - Google Patents
But disconnect electrothermal tube and tube sheet structure Download PDFInfo
- Publication number
- CN205545989U CN205545989U CN201620347762.3U CN201620347762U CN205545989U CN 205545989 U CN205545989 U CN 205545989U CN 201620347762 U CN201620347762 U CN 201620347762U CN 205545989 U CN205545989 U CN 205545989U
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- tube
- screwed pipe
- electrothermal tube
- pipe
- screwed
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- Expired - Fee Related
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Abstract
The utility model relates to a the chemical industry's electric heater specifically is but disconnect electrothermal tube and tube sheet structure, solves current electrothermal tube and tube sheet structure and hangs down straightness and do not guarantee, do not dismantle the problem inconvenient, that the gas tightness is difficult to the assurance of changing, scheme well when overhauing: open the screw hole on the tube sheet, downthehole twisting there is the screwed pipe, and spiral shell tube and tube plate is fixed, worn the electrothermal tube in the screwed pipe, fixed sleeving on the electrothermal tube, it has the one -level step to open on the sleeve pipe, and the big terminal surface of step supports in the screwed pipe up end, is equipped with seal ring between sleeve pipe and screwed pipe, has worn gland nut on the sleeve pipe, gland nut and screwed pipe external diameter threaded connection, the step face of gland nut clamp sleeve. The advantage: 1, the straightness that hangs down easily guarantees, 2, the part machining precision requires lowly, low in production cost, 3, the gas tightness guarantees easily that just the leakproofness is better, 4, easily dismantle during the maintenance and change, 5, the manufacturability is good, and the product percent of pass is high.
Description
Technical field
This utility model relates to the electric heater of chemical industry, specially being disconnected electrothermal tube and tube plate structure.
Background technology
Commonly using electric heater in chemical industry at present, its core component is electrothermal tube and tube sheet.Existing electric heater includes tube sheet, have connecting hole on described tube sheet, be installed with the electrothermal tube of external diameter and connecting hole apertures in described connecting hole, outside described electrothermal tube, be cased with sleeve pipe, described casing inner diameter and electrothermal tube major diameter fit, described sleeve pipe is welded and fixed with tube sheet, electrothermal tube respectively.Electrothermal tube one end is stretched into below tube sheet through connecting hole, and electrothermal tube coordinates with connecting hole, it is ensured that air-tightness, stretches into the submergence in use of the electrothermal tube below tube sheet simultaneously and heats in a liquid.Sleeve pipe is welded and fixed with tube sheet, electrothermal tube respectively, and electrothermal tube is risen fixation.Sleeve pipe has higher requirements with the perpendicularity of tube sheet simultaneously, need to ensure to have between the electrothermal tube on tube sheet uniform spacing, to ensure the uniform heating to liquid.And sleeve pipe also plays guarantee tube sheet and adds bubble-tight effect between heat pipe.This kind of attachment structure has the disadvantages that 1, set tube to tube sheet welding ensures that perpendicularity difficulty is bigger；2, for ensureing the air-tightness connected, higher to each component processing required precision；3, between parts, employing is welded and fixed, and maintenance replacing is wasted time and energy；4, manufacturability is bad, and conforming product rate is low, repair rate is high.
Summary of the invention
The problem that dismounting and change inconvenience when this utility model solves existing electrothermal tube and the bad guarantee of tube plate structure perpendicularity, maintenance, air-tightness are difficult to ensure that, it is provided that a kind of being disconnected electrothermal tube and tube plate structure.
This utility model is achieved through the following technical solutions: electrothermal tube and tube plate structure, including tube sheet, described tube sheet has screwed hole, is screwed with screwed pipe in described screwed hole, and described screwed pipe is also fixed with Tube-sheet Welding；It is installed with electrothermal tube in described screwed pipe, it is welded with sleeve pipe on described electrothermal tube, one-level step is had on described sleeve pipe, the large end face of described step is supported in the upper surface of screwed pipe, and between sleeve pipe and screwed pipe, it being provided with seal washer, the big footpath of described sleeve pipe is less than screwed pipe external diameter, and described sleeve pipe is also installed with clamp nut, described clamp nut is connected with screwed pipe outer-diameter threads, the step surface of described clamp nut clamp sleeve.Air-tightness between tube sheet and sleeve pipe is threaded connection guarantee, then the two is welded and fixed, it is ensured that be connected firmly, the most threaded perpendicularity being easier to both guarantees.Between electrothermal tube and tube sheet, air-tightness is ensured by seal washer, reduces the requirement on machining accuracy of each parts.Soldering sleeve on electrothermal tube, collar supports, on screwed pipe, then with clamp nut clamp sleeve and seal washer, is simultaneously connected with electrothermal tube and tube sheet, each parts of dismounting and change of being more convenient for during maintenance.
This utility model has the advantage that 1, perpendicularity is prone to ensure；2, component processing required precision is low, and production cost is low；3, air-tightness is prone to ensure and better tightness；4, it is readily disassembled replacing during maintenance；5, good manufacturability, conforming product rate is high.
Accompanying drawing explanation
Fig. 1 is this utility model structural representation；
In figure: 1-tube sheet, 2-screwed pipe, 3-electrothermal tube, 4-sleeve pipe, 5-seal washer, 6-clamp nut.
Detailed description of the invention
Electrothermal tube and tube plate structure, including tube sheet 1, described tube sheet 1 has screwed hole, is screwed with screwed pipe 2 in described screwed hole, and described screwed pipe 2 is also welded and fixed with tube sheet 1；It is installed with electrothermal tube 3 in described screwed pipe 2, it is welded with sleeve pipe 4 on described electrothermal tube 3, one-level step is had on described sleeve pipe 4, the large end face of described step is supported in the upper surface of screwed pipe 2, and between sleeve pipe 4 and screwed pipe 2, it being provided with seal washer 5, the big footpath of described sleeve pipe 4 is less than screwed pipe 2 external diameter, and described sleeve pipe 4 is also installed with clamp nut 6, described clamp nut 6 is connected with screwed pipe 2 outer-diameter threads, the step surface of described clamp nut 6 clamp sleeve 4.
When electrothermal tube 3 needs maintenance dismounting, loosening pressed nut 6, electrothermal tube 3 can be extracted out by screwed pipe 2, change seal washer 5, it is ensured that air-tightness, after treating electrothermal tube 3 maintenance simultaneously, electrothermal tube 3 is penetrated in screwed pipe 2, tightens clamp nut 6, complete service work.
Claims (1)
1. electrothermal tube and a tube plate structure, including tube sheet (1), it is characterised in that: having screwed hole on described tube sheet (1), be screwed with screwed pipe (2) in described screwed hole, described screwed pipe (2) is also welded and fixed with tube sheet (1)；Electrothermal tube (3) it is installed with in described screwed pipe (2), sleeve pipe (4) it is welded with on described electrothermal tube (3), described sleeve pipe has one-level step on (4), the large end face of described step is supported in the upper surface of screwed pipe (2), and between sleeve pipe (4) and screwed pipe (2), it is provided with seal washer (5), the big footpath of described sleeve pipe (4) is less than screwed pipe (2) external diameter, clamp nut (6) also it is installed with on described sleeve pipe (4), described clamp nut (6) is connected with screwed pipe (2) outer-diameter threads, the step surface of described clamp nut (6) clamp sleeve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620347762.3U CN205545989U (en) | 2016-04-25 | 2016-04-25 | But disconnect electrothermal tube and tube sheet structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620347762.3U CN205545989U (en) | 2016-04-25 | 2016-04-25 | But disconnect electrothermal tube and tube sheet structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205545989U true CN205545989U (en) | 2016-08-31 |
Family
ID=56796118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620347762.3U Expired - Fee Related CN205545989U (en) | 2016-04-25 | 2016-04-25 | But disconnect electrothermal tube and tube sheet structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205545989U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317885A (en) * | 2018-04-15 | 2018-07-24 | 山西阳煤化工机械（集团）有限公司 | The Hermetical connecting structure of exchanger tubes and tubesheets |
| CN113784469A (en) * | 2021-03-05 | 2021-12-10 | 泰州市泰然装备有限公司 | Spiral outer tube material for high-temperature electrothermal radiation and preparation method |
-
2016
- 2016-04-25 CN CN201620347762.3U patent/CN205545989U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108317885A (en) * | 2018-04-15 | 2018-07-24 | 山西阳煤化工机械（集团）有限公司 | The Hermetical connecting structure of exchanger tubes and tubesheets |
| CN108317885B (en) * | 2018-04-15 | 2024-02-06 | 山西阳煤化工机械（集团）有限公司 | Sealing connection structure of heat exchange tube and tube plate |
| CN113784469A (en) * | 2021-03-05 | 2021-12-10 | 泰州市泰然装备有限公司 | Spiral outer tube material for high-temperature electrothermal radiation and preparation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160831 Termination date: 20180425 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |