CN205135733U - Be applied to novel whole high -and medium -voltage inner casing of overcritical steam turbine - Google Patents
Be applied to novel whole high -and medium -voltage inner casing of overcritical steam turbine Download PDFInfo
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- CN205135733U CN205135733U CN201521003340.6U CN201521003340U CN205135733U CN 205135733 U CN205135733 U CN 205135733U CN 201521003340 U CN201521003340 U CN 201521003340U CN 205135733 U CN205135733 U CN 205135733U
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Abstract
The utility model provides a be applied to novel whole high -and medium -voltage inner casing of overcritical steam turbine, relates to steam turbine high -and medium -voltage inner casing structure. There is the fit -up gap for the high -and medium -voltage part of solving current overcritical turbine unit in it because of between each fitting surface, leads to the through -flow inefficiency of high -and medium -voltage, unit heat rate to increase, and the low problem of assembly efficiency. The utility model discloses a no. 1 baffle cover of high -and medium -voltage inner casing, high -pressure baffle cover and middling pressure is as an organic whole, and the blade direct mount of high -voltage compartment is on the high -and medium -voltage inner casing. High -pressure admission mouth, middling pressure steam inlet, no. 0 high pressure feed water heater steam extraction port, no. 1 high pressure feed water heater steam extraction port, high -and medium -voltage steam admission side balancing hole and septalium piece as an organic whole. The utility model discloses an overall structure improves the efficiency of the high -and medium -voltage part of unit, reduces leakage loss, reduces the heat rate of whole unit, improves the benefit of power plant, can reduce high -and medium -voltage's assembly portion cover, the manufacturability is good, assembles simple labour saving and time saving, shortens the on -the -spot installation cycle. The utility model is suitable for an overcritical steam turbine.
Description
Technical field
The utility model belongs to steam turbine high pressure inner casing construction applications.
Background technique
The high pressure part of existing supercritical unit has a lot of assembling portions cover, and portion's cover and portion exist mating face between overlap, have fit up gap between mating face, and when making unit operation, Steam loss increases, and the efficiency of reduction unit, adds unit hear rate.And owing to overlapping more in the portion of assembling, the inefficiency of general assembly, the complex structure of unit, unit processing and installation are wasted time and energy, and increase cost.
Model utility content
The utility model is that high pressure part in order to solve existing supercritical steam turbine units is because existing fit up gap between each mating face, the efficiency causing high pressure through-flow is low, unit hear rate increases, and the problem that efficiency of assembling is low, the utility model provides a kind of novel overall high pressure inner casing being applied to supercritical pressure turbine.
A kind of novel overall high pressure inner casing being applied to supercritical pressure turbine described in the utility model, comprise high pressure inner casing 1, high pressure blade ring 5 and middle pressure No. 1 diaphragm housing ring 7, described high pressure inner casing 1, high pressure blade ring 5 and middle pressure No. 1 diaphragm housing ring 7 is integrated part, and the blade of high-pressure section is directly installed on high pressure inner casing 1.
High-pressure admission mouth, in compress into steam ports, No. 0 high-pressure heater extraction opening 2, No. 1 high-pressure heater extraction opening 3, high pressure steam admission side equalizing orifice and septalium are integrated part.
The utility model compared with prior art has following effect: 1. the overall structure of the utility model high pressure inner casing improves the efficiency of the high pressure part of unit, reduces leakage losses, reduces the hear rate of whole unit, improves the benefit of power plant.2. can reduce department of assembly's cover of high pressure, good manufacturability, general assembly is simply time saving and energy saving, shortens the in-site installation cycle.3. the utility model high pressure inner casing compact structure, Safety performance is high, and reliability is high, can ensure unit safety operation, be applicable to supercritical pressure turbine.
Accompanying drawing explanation
Fig. 1 is a kind of internal structure schematic diagram being applied to the novel overall high pressure inner casing of supercritical pressure turbine described in mode of execution;
Fig. 2 is a kind of external structure schematic diagram being applied to the novel overall high pressure inner casing of supercritical pressure turbine described in mode of execution;
Fig. 3 is the structural representation of the high pressure inner casing in background technique, and in figure, 4 represent High-and-medium Pressure Outer Casing, and 6 represent high-pressure nozzle box, pressure No. 2 diaphragm housing rings in 8 expressions, 9 represent main steam leads, and 10 represent main steam imports, 11 represent reheated steam import, and 12 represent high pressure steam admission side gimbal.
Embodiment
Embodiment one: present embodiment is described see Fig. 1 to Fig. 3, a kind of novel overall high pressure inner casing being applied to supercritical pressure turbine described in present embodiment, comprise high pressure inner casing 1, high pressure blade ring 5 and middle pressure No. 1 diaphragm housing ring 7, described high pressure inner casing 1, high pressure blade ring 5 and middle pressure No. 1 diaphragm housing ring 7 is integrated part, and the blade of high-pressure section is directly installed on high pressure inner casing 1.
High pressure inner casing is cast inblock structure, and the blade of flow passage component is directly fixed on high pressure inner casing, and reduce department of assembly's cover, structure is simple, and machining is time saving and energy saving with installation, and set structure is simple.Decrease the assembling between portion's cover, Site for Unit assembling cycle obviously shortens.Decrease the leakage vapour that portion's inner room produces because there is fit up gap, Steam loss reduces, and improves the efficiency of high pressure part, reduces the hear rate of unit, improves Economy.
Embodiment two: present embodiment is to a kind of further restriction being applied to the novel overall high pressure inner casing of supercritical pressure turbine described in embodiment one, in present embodiment, high-pressure admission mouth, in compress into steam ports, No. 0 high-pressure heater extraction opening 2, No. 1 high-pressure heater extraction opening 3, high pressure steam admission side equalizing orifice and septalium are integrated part.
Present embodiment can reduce Steam loss further, improves the efficiency of high pressure part, reduces the hear rate of unit, improves Economy.
Claims (2)
1. one kind is applied to the novel overall high pressure inner casing of supercritical pressure turbine, comprise high pressure inner casing (1), high pressure blade ring (5) and middle pressure No. 1 diaphragm housing ring (7), it is characterized in that, described high pressure inner casing (1), high pressure blade ring (5) and middle pressure No. 1 diaphragm housing ring (7) are integrated part, and the blade of high-pressure section is directly installed on high pressure inner casing (1).
2. a kind of novel overall high pressure inner casing being applied to supercritical pressure turbine according to claim 1, it is characterized in that, high-pressure admission mouth, in compress into steam ports, No. 0 high-pressure heater extraction opening (2), No. 1 high-pressure heater extraction opening (3), high pressure steam admission side equalizing orifice and septalium are integrated part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521003340.6U CN205135733U (en) | 2015-12-04 | 2015-12-04 | Be applied to novel whole high -and medium -voltage inner casing of overcritical steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521003340.6U CN205135733U (en) | 2015-12-04 | 2015-12-04 | Be applied to novel whole high -and medium -voltage inner casing of overcritical steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205135733U true CN205135733U (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201521003340.6U Active CN205135733U (en) | 2015-12-04 | 2015-12-04 | Be applied to novel whole high -and medium -voltage inner casing of overcritical steam turbine |
Country Status (1)
| Country | Link |
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| CN (1) | CN205135733U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370329A (en) * | 2015-12-04 | 2016-03-02 | 哈尔滨汽轮机厂有限责任公司 | Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine |
-
2015
- 2015-12-04 CN CN201521003340.6U patent/CN205135733U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105370329A (en) * | 2015-12-04 | 2016-03-02 | 哈尔滨汽轮机厂有限责任公司 | Novel integrated high-medium-pressure internal cylinder applied to supercritical steam turbine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |