CN207499921U - A kind of inner cover shell structure that can reduce heat convection - Google Patents
A kind of inner cover shell structure that can reduce heat convection Download PDFInfo
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- CN207499921U CN207499921U CN201721680688.8U CN201721680688U CN207499921U CN 207499921 U CN207499921 U CN 207499921U CN 201721680688 U CN201721680688 U CN 201721680688U CN 207499921 U CN207499921 U CN 207499921U
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- skeleton
- angle steel
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- plate
- coverboard
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Abstract
The utility model belongs to steam turbine equipment technical field, and in particular to a kind of inner cover shell structure that can reduce heat convection, the structure are included by the skeleton of angle steel welding, steel plate, coverboard, support angle steel, half ring flat-plate and screw；Skeleton is supported with cylinder by the support angle steel of welding, and steel plate and coverboard are welded on skeleton；Steel plate and coverboard are connect by half ring flat-plate and screw with skeleton；Angle steel, steel plate and screw are standard component.Using outside cylinder intermediate space in double-deck cylinder, according to thermal requirements scene to inner casing install housing, have many advantages, such as that dismounting is convenient, do not influence the repair of steam turbine inner casing, convenient for optimizing and revising for product, improve turbine efficiency.In application, using the gap of inner casing and outside cylinder, field measurement skeleton and distance between cylinders from, interception support angle steel is supported, and side is welded with cylinder welding opposite side with skeleton, and inner casing forepart is wrapped up, increase convective heat transfer resistance, reducing heat convection reduces radiation loss.
Description
Technical field：
The utility model belongs to steam turbine equipment technical field, and in particular to a kind of inner can that can reduce heat convection
Structure.
Background technology：
Cylinder structure is more complicated, and in general, structure size, geometry, flow distribution of each unit etc. will
Influence the heat exchange relation of cylinder.Double shell structure used by marine turbing at present, between the interior outer shell of this structure
In the chamber formed, there is complicated steam flowing.For the steam based on axial flow, Forced Convection Heat Transfer is outside inner casing
The main heat transfer mode of wall.The flowing will play cooling effect, and cylinder fatigue strength can be influenced by dealing with improperly, increase heat dissipation damage
It loses.
Utility model content：
In place of the utility model makes up and improve above-mentioned the deficiencies in the prior art, a kind of reduction heat convection is provided
Inner cover shell structure, in order to solve in the prior art marine turbing bilayer cylinder reduce thermal stress while inner casing radiation loss it is big
The problem of.It is reasonable in design, it is securely and reliably, of low cost, it is easy to promote and use on a large scale.
The technical solution adopted in the utility model is：A kind of inner cover shell structure that can reduce heat convection, the structure packet
It includes by the skeleton of angle steel welding, steel plate, coverboard, support angle steel, half ring flat-plate and screw；The branch that the skeleton passes through welding with cylinder
Support angle steel is supported, and the steel plate and coverboard are welded on skeleton.
Further, the steel plate and coverboard are connect by half ring flat-plate and screw with skeleton.
Further, the angle steel, steel plate and screw are standard component.
The beneficial effects of the utility model：A kind of inner cover shell structure for reducing heat convection is provided, utilizes double-deck cylinder
Interior outside cylinder intermediate space, according to thermal requirements scene to inner casing install housing, have dismount it is convenient, do not influence in steam turbine
The advantages that cylinder repairs convenient for optimizing and revising for product, improves turbine efficiency.It is reasonable in design, efficiency is improved, it is at low cost
It is honest and clean, it is easy to promote and use on a large scale.
Description of the drawings：
Fig. 1 is the structure diagram of the utility model；
The position view of angle steel in the utility model of Fig. 2
Fig. 3 is the mounting structure schematic diagram of the utility model light plate and coverboard；
Fig. 4 is the mounting structure schematic diagram of support angle steel in the utility model；
Fig. 5 is the mounting structure schematic diagram of half ring flat-plate in the utility model；
Fig. 6 is the mounting structure schematic diagram of screw in the utility model；
Specific embodiment：
With reference to each figure, a kind of inner cover shell structure that can reduce heat convection, the structure includes the skeleton by 2 welding of angle steel
1st, steel plate 3, coverboard 4, support angle steel 5, half ring flat-plate 6 and screw 7；The skeleton 1 is carried out with cylinder by the support angle steel 5 of welding
Support, the steel plate 3 and coverboard 4 are welded on skeleton 1；The steel plate 3 and coverboard 4 pass through half ring flat-plate 6 and screw 7 and skeleton 1
Connection；The angle steel 2, steel plate 3 and screw 7 are standard component.In application, using the gap of inner casing and outside cylinder, field measurement
Skeleton 1 is with distance between cylinders from interception support angle steel 5 is supported, and side is welded with cylinder welding opposite side with skeleton 1, by
Cylinder forepart wraps up, and increases convective heat transfer resistance, and reducing heat convection reduces radiation loss.
Claims (3)
1. a kind of inner cover shell structure that can reduce heat convection, it is characterised in that：The structure is included by angle steel（2）The bone of welding
Frame（1）, steel plate（3）, coverboard（4）, support angle steel（5）, half ring flat-plate（6）And screw（7）；The skeleton（1）Pass through weldering with cylinder
The support angle steel connect（5）It is supported, the steel plate（3）And coverboard（4）It is welded in skeleton（1）On.
2. a kind of inner cover shell structure that can reduce heat convection according to claim 1, it is characterised in that：The steel plate
（3）And coverboard（4）Pass through half ring flat-plate（6）And screw（7）With skeleton（1）Connection.
3. a kind of inner cover shell structure that can reduce heat convection according to claim 1, it is characterised in that：The angle steel
（2）, steel plate（3）And screw（7）For standard component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721680688.8U CN207499921U (en) | 2017-12-06 | 2017-12-06 | A kind of inner cover shell structure that can reduce heat convection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721680688.8U CN207499921U (en) | 2017-12-06 | 2017-12-06 | A kind of inner cover shell structure that can reduce heat convection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207499921U true CN207499921U (en) | 2018-06-15 |
Family
ID=62508327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721680688.8U Active CN207499921U (en) | 2017-12-06 | 2017-12-06 | A kind of inner cover shell structure that can reduce heat convection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207499921U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795343A (en) * | 2017-12-06 | 2018-03-13 | 中国船舶重工集团公司第七0三研究所 | A kind of inner cover shell structure that can reduce heat convection |
-
2017
- 2017-12-06 CN CN201721680688.8U patent/CN207499921U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107795343A (en) * | 2017-12-06 | 2018-03-13 | 中国船舶重工集团公司第七0三研究所 | A kind of inner cover shell structure that can reduce heat convection |
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