CN204478875U - mixed hydrogen oil heat exchanger - Google Patents
mixed hydrogen oil heat exchanger Download PDFInfo
- Publication number
- CN204478875U CN204478875U CN201520085851.0U CN201520085851U CN204478875U CN 204478875 U CN204478875 U CN 204478875U CN 201520085851 U CN201520085851 U CN 201520085851U CN 204478875 U CN204478875 U CN 204478875U
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- CN
- China
- Prior art keywords
- cone
- tube sheet
- sealing
- flange
- strobilus masculinus
- 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.)
- Expired - Fee Related
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Abstract
Mixed hydrogen oil heat exchanger, it comprises bobbin carriage, housing, tube sheet, the counterface of channel flange and shell flange set sealing cone respectively and the incline direction of sealing cone as ecto-entad.Assembling annular groove is established respectively at the counterface inward flange of channel flange and shell flange.Annular male cone (strobilus masculinus) is established respectively at outer edge in the both ends of the surface of tube sheet, and male cone (strobilus masculinus) tilts from inside to outside, tube sheet both ends of the surface arrange closure gasket groove near described male cone (strobilus masculinus) inward flange side, establish internal layer sealing ring in described closure gasket groove, and make the radial width of described closure gasket groove consistent with the spacing between described assembling annular groove and described sealing cone neighboring edge.After assembling, the male cone (strobilus masculinus) of described tube sheet coordinates with described sealing cone and arrange outer sealing ring between the mating surface of the two.To the design of bobbin carriage and shell flange end face and tube plate structure, improve sealing effectiveness and sealing stability, extend the frequency that sealing place is changed, reduce costs, avoid and cause environmental pollution because of leakage.
Description
Technical field
The utility model relates to the cold exchange device in oil, chemical field, is a kind of mixed hydrogen oil heat exchanger specifically.
Background technology
Hydrocracking technology is one of main technique of heavy oil deep processing.Under current Oil Refining Industry sulfur-bearing and the increase of high-sulfur heavy crude supply, the ratio of intermediate oil in oil product demand rise and product quality requires increasingly strict situation, the raw material range that hydrocracking technology is processed because of it is wide, the good product quality, wide in variety produced, liquid yield is high, the features such as production chains is large, make it become in petroleum refining industry and produce high grade light-end products, particularly the important technology of the clean intermediate fraction oil of production environment close friend.
In hydrocracking unit, product and mixed hydrogen oil heat exchanger are in high temperature, high pressure conditions.The heat exchanger used in actual production is all the heat exchanger of U-shaped tubular type substantially.U-shaped pipe heat exchanger is different from fixed tube sheet type and floating head type, only has one piece of tube sheet, and without floating head, tube bank also can be extracted out, every root heat exchanger tube is all made U-shaped, two ends and is all fixed on the tube sheet of the same side, every root pipe can free-extension, being also to eliminate thermal stress, being bolted on together between tube sheet and housing.This heat exchanger structure is simple, cost is low, tube bank can in housing free-extension, without thermal (temperature difference) stress, also can will tube bank extract out cleaning and also save one piece of tube sheet.But in use; because so the sealing between tube sheet and shell side is not very good under being in high temperature, high pressure conditions; often can produce leakage and cause environmental pollution; need for this reason regularly continuous to the position that is tightly connected carry out cleaning change, not only affect production efficiency but also production cost can be made significantly to increase.
For product in certain oil plant 800,000 tons of hydrocracking units and mixed hydrogen oil heat exchanger applying working condition.As following table:
The medium that tube side is walked is containing H
2the product of S, shell side medium is hydrogeneous miscella.
Its corrosion type is: hydrogen sulfide corrosion, primarily of H
2s, NH
3chemical combination generates ammonium compounds precipitation blocking pipeline and is formed.The corrosion reaction process produced:
2Fe+2H
2S+O
2→2FeS+2H
20
4Fe+6H
2S+3O
2→2Fe
2S
3+6H
2O
H
2S+2O
2→H
2SO
4
H
2S+FeS→FeS+H
2
S+Fe→FeS
RSH+Fe → FeS+ unsaturated hydrocarbons.The device anticorrosion means that product and mixed hydrogen oil heat exchanger are taked at the beginning of going into operation are coating antiseptics, and after going into operation three months, heat exchanger often occurs to leak perforation.Therefore need to change in advance.The same production efficiency and add cost of affecting.
Utility model content
The purpose of this utility model is to provide a kind of mixed hydrogen oil heat exchanger, and the structure of its position that is tightly connected by improvement tube sheet and shell side, is improve sealing effectiveness, reduce the replacing frequency of seal, enhance productivity, reduce costs.
The technical scheme in the invention for solving the technical problem is: a kind of mixed hydrogen oil heat exchanger, it comprises bobbin carriage, housing, tube sheet, point journey plate, U-tube, deflection plate, channel flange is established in bobbin carriage one end, and shell one end establishes shell flange, and tube sheet is installed between channel flange and shell flange.Sealing cone is set respectively and the incline direction of described sealing cone is ecto-entad at the counterface medium position of described channel flange and shell flange.In the inside edge of the counterface of described channel flange and shell flange, assembling annular groove is set respectively.The sealing cone be oppositely arranged and assembling annular groove, in the both ends of the surface of described tube sheet, annular male cone (strobilus masculinus) is set respectively at outer edge, and described male cone (strobilus masculinus) tilts from inside to outside, tube sheet both ends of the surface arrange closure gasket groove near described male cone (strobilus masculinus) inward flange side, establish internal layer sealing ring in described closure gasket groove, and make the radial width of described closure gasket groove consistent with the spacing between described assembling annular groove and described sealing cone neighboring edge.After assembling, the male cone (strobilus masculinus) of described tube sheet coordinates with described sealing cone and arrange outer sealing ring between the mating surface of the two.
Further, at the medium position of described sealing cone dovetail groove is set and described outer sealing ring is arranged in this dovetail groove.After assembling, the outer side of male cone (strobilus masculinus) of described tube sheet contacts with described outer sealing ring and coordinates.
Further, on the inside and outside wall of described U-tube, all plating is equipped with nickel-phosphorus alloy coating.U-tube tube bank is upper adopt inside and outside plating nickel-phosphorus alloy coating carry out anticorrosion after, its pot life length obviously extends, and obtains good economic benefit.
The beneficial effects of the utility model are: to the design of bobbin carriage and shell flange end face and tube plate structure, improve sealing effectiveness and sealing stability, extend the frequency that sealing place is changed, reduce costs, avoid and cause environmental pollution because of leakage.After inside and outside plating nickel-phosphorus alloy coating is adopted to U-tube, improve the corrosion resistance of tube chamber, extend tube chamber and to be corroded the time span penetrated, overcome the problem that current U-tube is frequently revealed because of corrosion, the economic benefit simultaneously obtained.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model;
Fig. 2 is the partial enlargement structural representation at A place in Fig. 1;
Fig. 3 is the cross-sectional view of bobbin carriage in the utility model;
Fig. 4 is the right TV structure schematic diagram of bobbin carriage in the utility model;
Fig. 5 is the part section structural representation of the utility model middle shell;
Fig. 6 is the left TV structure schematic diagram of the utility model middle shell;
Fig. 7 is the cross-sectional view of tube sheet in the utility model;
Fig. 8 is the side-looking structural representation of tube sheet in the utility model;
Fig. 9 is the cross section structure schematic diagram of U-tube in the utility model;
In figure: 1 bobbin carriage, 11 channel flanges, 111 sealing cones, 112 assembling annular grooves, 2 housings, 21 shell flanges, 211 sealing cones, 212 assembling annular grooves, 3 tube sheets, 31 male cone (strobilus masculinus)s, 32 closure gasket grooves, 4 points of journey plates, 5U type pipe, 51 nickel-phosphorus alloy coatings, 6 deflection plates, 7 outer sealing rings, 8 internal layer sealing rings.
Detailed description of the invention
For convenience of explanation, understand technology contents of the present utility model, below in conjunction with accompanying drawing, the utility model is described in further detail.
As shown in Figure 1, a kind of mixed hydrogen oil heat exchanger, it comprises bobbin carriage 1, housing 2, tube sheet 3, point journey plate 4, U-tube 5, deflection plate 6, channel flange 11 is established in described bobbin carriage 1 one end, shell flange 21 is established in described housing 2 one end, and described tube sheet 3 is installed between described channel flange 11 and described shell flange 21.
As shown in Figures 1 to 6, at the counterface medium position of described channel flange 11 and shell flange 21, sealing cone 111,211 is set respectively and the incline direction of described sealing cone 111,211 is ecto-entad.Assembling annular groove 112,212 is set respectively in the inside edge of the counterface of described channel flange 11 and shell flange 21.
As Fig. 1, Fig. 2, Fig. 7, shown in Fig. 8, the sealing cone 111 be oppositely arranged, 211 and assembling annular groove 112, 212, in the both ends of the surface of described tube sheet 3, annular male cone (strobilus masculinus) 31 is set respectively at outer edge, and described male cone (strobilus masculinus) 31 tilts from inside to outside, tube sheet 3 both ends of the surface arrange closure gasket groove 32 near described male cone (strobilus masculinus) 31 inward flange side, internal layer sealing ring 8 is established in described closure gasket groove 32, and make the radial width of described closure gasket groove 32 and described assembling annular groove 112, 212 and described sealing cone 111, spacing between 211 neighboring edges is consistent, i.e. described assembling annular groove 112, 212 and described sealing cone 111, the annular boss formed between 211 extends in the closure gasket groove 32 of described tube sheet 3 after mounting, with internal layer sealing ring 8 pressing arranged in groove, medium is made to be not easy linearly directly to contact with internal layer sealing ring 8, be conducive to the service life of guaranteeing internal layer sealing ring 8.After assembling, the male cone (strobilus masculinus) 31 of described tube sheet 3 coordinates with described sealing cone 111,211 and between the mating surface of the two, arranges outer sealing ring 7.
Adopt inside and outside double-layer sealing structure and the conical surface sealing structure in dependence outside, fitting surface can be made to become tortuous, so not only fit-up gap reduces, sealing surface pressing better effects if, and the difficulty that increase medium contacts with outer sealing ring 7, extend the impaired time span of sealing, reduce and change the frequency.Further, at the medium position of described sealing cone 111,211 dovetail groove is set and described outer sealing ring 7 is arranged in this dovetail groove.After assembling, the outer side of male cone (strobilus masculinus) 31 of described tube sheet 3 contacts with described outer sealing ring 7 and coordinates.During such assembling, male cone (strobilus masculinus) 31 forms extruding to outer sealing ring 7, enhances to coordinate tight type between male cone (strobilus masculinus) 31 with sealing cone 111,211, by the compacting of outer sealing ring 7, improves sealing effectiveness.
As shown in Figure 9, on the inside and outside wall of described U-tube 5, all plating is equipped with nickel-phosphorus alloy coating 51.U-tube 5 restrain upper adopt inside and outside plating nickel-phosphorus alloy coating carry out anticorrosion after, its pot life length obviously extends, and obtains good economic benefit.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and modification, these improve and modification also should be considered as protection domain of the present utility model.
Except the technical characteristic described in description, be the known technology of those skilled in the art.
Claims (3)
1. a mixed hydrogen oil heat exchanger, it comprises bobbin carriage, housing, tube sheet, point journey plate, U-tube, deflection plate, and channel flange is established in bobbin carriage one end, and shell one end establishes shell flange, and tube sheet is installed between channel flange and shell flange, it is characterized in that:
At the counterface medium position of described channel flange and shell flange, sealing cone is set respectively and the incline direction of described sealing cone is ecto-entad;
In the inside edge of described channel flange and shell flange counterface, assembling annular groove is set respectively; Accordingly,
In the both ends of the surface of described tube sheet, annular male cone (strobilus masculinus) is set respectively at outer edge, and described male cone (strobilus masculinus) tilts from inside to outside;
Described tube sheet both ends of the surface arrange closure gasket groove near described male cone (strobilus masculinus) inward flange side, establishes internal layer sealing ring in described closure gasket groove, and make the radial width of described closure gasket groove consistent with the spacing between described assembling annular groove and described sealing cone neighboring edge;
After assembling, the male cone (strobilus masculinus) of described tube sheet coordinates with described sealing cone and arrange outer sealing ring between the mating surface of the two.
2. mixed hydrogen oil heat exchanger according to claim 1, is characterized in that: arrange dovetail groove and described outer sealing ring is arranged in this dovetail groove at the medium position of described sealing cone; After assembling, the outer side of male cone (strobilus masculinus) of described tube sheet contacts with described outer sealing ring and coordinates.
3. mixed hydrogen oil heat exchanger according to claim 1 and 2, is characterized in that: on the inside and outside wall of described U-tube, all plating is equipped with nickel-phosphorus alloy coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520085851.0U CN204478875U (en) | 2015-02-06 | 2015-02-06 | mixed hydrogen oil heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520085851.0U CN204478875U (en) | 2015-02-06 | 2015-02-06 | mixed hydrogen oil heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204478875U true CN204478875U (en) | 2015-07-15 |
Family
ID=53634661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520085851.0U Expired - Fee Related CN204478875U (en) | 2015-02-06 | 2015-02-06 | mixed hydrogen oil heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204478875U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595254A (en) * | 2019-09-24 | 2019-12-20 | 大冶威普换热器有限公司 | Leakage-proof device for tubular heat exchanger |
-
2015
- 2015-02-06 CN CN201520085851.0U patent/CN204478875U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110595254A (en) * | 2019-09-24 | 2019-12-20 | 大冶威普换热器有限公司 | Leakage-proof device for tubular heat exchanger |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20190206 |