CN204921049U - A guide blade device for steam turbine - Google Patents
A guide blade device for steam turbine Download PDFInfo
- Publication number
- CN204921049U CN204921049U CN201520291164.4U CN201520291164U CN204921049U CN 204921049 U CN204921049 U CN 204921049U CN 201520291164 U CN201520291164 U CN 201520291164U CN 204921049 U CN204921049 U CN 204921049U
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- Prior art keywords
- guide
- rim
- blading
- guide blade
- blade carrier
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Abstract
The utility model relates to a guide blade device for steam turbine (1), be equipped with guide blade ring (3) guide blade (2), that divide into two guide blade ring halfbodies (3a, 3b) and one arrange that this guide blade support is used for holding and divide into guide blade support (4) of two guide blade support halfbodies (4a, 4b) in the steam turbine casing including one guide blade encircles halfbody (3a, 3b). Guide blade ring (3, 3a, 3b) has an inner ring (5, 5a, 5b) and an outer loop (6, 6a, 6b). Guide blade (2) welding is in inner ring (5, 5a, 5b) and between the outer loop (6, 6a, 6b).
Description
Technical field
The utility model relate to a kind of according to independent claims 1 as described in the preamble, for the guide vane apparatus of steam turbine.
Background technique
In order to guide steam with the angle of the best in steam turbine on guide vane, use and have the guiding device of guide vane, described guide vane to be fixed in so-called guide blade carrier and to be arranged in turbine cylinder together with this guide blade carrier.Each guide vane has a kind of root of blade (Schaufelfu β) distinguishingly constructed usually, such as hook base, fir base or hammer base (Hammerfu β).By means of the described base distinguishingly constructed, individual blade can be pushed in a kind of root of blade groove correspondingly constructed in the so-called rim of the guide blading, and be fixed on thus on this rim of the guide blading.Next, the described rim of the guide blading is loaded in guide blade carrier, and is fixed on there.In order to install described guide blade carrier, usually also the rim of the guide blading and guide blade carrier can be divided into two halfbodies.When installation, first the guide blade carrier of below and the rim of the guide blading are arranged in turbine shroud together with guide vane, then turbine rotor is installed, next the first half of guide blade carrier and the first half of turbine shroud is coupled together and install.Very bothersome and expensive owing to manufacturing the individual blade with the root of blade of special tectonic, and individual blade is arranged on the rim of the guide blading special tectonic groove in also expend time in very much, therefore, a kind of rim of the guide blading is suggested in DE19547653C2, the hole with contour shape extended diametrically is configured with in this rim of the guide blading, single guide vane and guide vane base thereof can be inserted in described hole, thus can realize the position that accurately limits.In order to reliably guide vane is fixed on the rim of the guide blading, for each blade uses independent blade locating stud.For this reason, first construct a through hole for each guide vane, this through hole, through the rim of the guide blading and guide vane base, is suitable for inserting retaining ring with axially extending from the side thus.Afterwards locating stud is inserted in described hole, thus ensures guide vane to be reliably fixed on guide blade carrier.But this guide vane apparatus is equally very expensive, because first need for single guide vane constructs the radial accommodating part with contour shape extended on guide blade carrier, they such as must corrode by milling or by line the system of drawing individually.Then each single guide vane must be incorporated into having in the hole of contour shape in the described rim of the guide blading, and be fixed by means of extra pin as mentioned above.
Model utility content
From above-mentioned prior art, therefore task of the present utility model is to provide a kind of guide vane apparatus, and its hinge structure can simple and low price ground manufacture.
Feature by independent claims 1 solves by this task.
The theme of dependent claims is other scheme of the present utility model, and they can realize with separately or be combineding with each other.
According to the guide vane apparatus for steam turbine of the present utility model comprise one be equipped with guide vane, be divided into the rim of the guide blading of two rim of the guide blading halfbodies and be arranged in steamturbine engine housing and be divided into the guide blade carrier of two guide blade carrier halfbodies, described guide blade carrier is for holding rim of the guide blading halfbody, it is characterized in that, the described rim of the guide blading has an inner ring and an outer shroud, and guide vane is solded between described inner ring and outer shroud.Be solded into by described, described guide vane does not just need to have special root of blade.Or rather, described guide vane is only made up of a guide vane plate be solded between the inner ring and outer shroud of the rim of the guide blading substantially.Being solded into by described, the special accommodating part for holding described guide vane can being saved, such as have profile structure groove or distinguishingly profile structure hole.Be easy to directed to carry out when the described rim of the guide blading of manufacture and fix, between the inner ring that guide vane can be clamped in the described rim of the guide blading simply and outer shroud, and correspondingly fixing thus.
So arrange in a kind of scheme of described guide vane apparatus: in described guide blade carrier, construct a kind of bracket groove for holding the described rim of the guide blading.The position of the described rim of the guide blading in guide blade carrier accurately can be determined by this bracket groove.The motion of the described rim of the guide blading can be avoided thus.Described bracket groove can be here a kind of simply, do not carry out the groove of specific profile structure.
So arrange in another kind of scheme of the present utility model: make the bracket groove of the outer shroud of the described rim of the guide blading and described guide blade carrier mutually complementally carry out constructing and being fitted together to mutually.Thus, can ensure essentially noly with gap the rim of the guide blading to be fixed on guide blade carrier.In order to mate in the bracket groove complementally constructed of described guide blade carrier with making rim of the guide blading precise match, after welding process, may need to carry out reprocessing to the described rim of the guide blading.Due to described welding, the described rim of the guide blading may be distorted, thus can not be encased in the bracket groove of described guide blade carrier by the described rim of the guide blading precise match.But a kind of like this reprocessing is less demanding to processing, because just described guide blade carrier can be adjusted to the size of needs by simple cutting measure-such as turning or milling.
Another kind of scheme of the present utility model is so arranged: ensure the not landing from the bracket groove of described guide blade carrier halfbody on mold joint of described rim of the guide blading halfbody.This protective measure such as can realize by means of fixing pin or dowel screw in a straightforward manner.
Accompanying drawing explanation
Next the utility model will be set forth further by means of diagram.Here illustrate:
Fig. 1 shows a kind of radial cross-section according to guide vane apparatus of the present utility model;
Fig. 2 shows the axial cross section of the halfbody of the top being passed in the guide vane apparatus shown in Fig. 1.
Embodiment
The parts that identical or function is identical represent with identical reference character in all diagrams.Accompanying drawing illustrates schematic representations of the present utility model separately, wherein only shows for component very important the utility model.Accompanying drawing does not here forcibly proportionally illustrate.
Fig. 1 show a kind of according to of the present utility model, for the radial cross section of the guide vane apparatus 1 of steam turbine.Described steam turbine does not here display further.Described guide vane apparatus 1 comprise one be equipped with guide vane 2, be divided into two rim of the guide blading halfbody 3a, the rim of the guide blading 3 of 3b.In addition, described guide vane apparatus 1 comprises one and is arranged in and is divided into two guide blade carrier halfbody 4a equally, the guide blade carrier 4 of 4b, for holding described rim of the guide blading halfbody 3a, 3b in steamturbine engine housing.Described rim of the guide blading halfbody 3a, 3b or guide blade carrier halfbody 4a, 4b is close on mold joint 9 in the assembled condition.The rim of the guide blading 3 has inner ring 5 and an outer shroud 6.Described guide vane 2 is welded between inner ring 5 and outer shroud 6.This guide vane 2 is constructed to simply, does not have the guide vane plate of the root of blade of special tectonic here.Therefore this guide vane plate can be made up of a kind of material of simple tension.Described guide vane 2 is embedded between described inner ring 5 and described outer shroud 6, and welds together with inner ring 5 and outer shroud 6 after orientation.The rim of the guide blading 3 is divided into two rim of the guide blading halfbody 3a, 3b not only also can realize before being solded into described guide vane 2 after being solded into.Stop described rim of the guide blading halfbody 3a, 3b landing from the bracket groove 8 of guide blade carrier halfbody 4a, 4b on mold joint 9.For this reason, such as at rim of the guide blading halfbody 3a, 3b and guide blade carrier halfbody 4a, a positioning screwn or locating stud 10 can be set between 4b.
Fig. 2 illustrates guide vane apparatus 1 shown in FIG with axial cross section.Fig. 2 only shows the halfbody of the top of the guide vane apparatus 1 in Fig. 1 here.Three guide vane apparatus are arranged in the axial direction one by one in the example shown.After each guide vane apparatus 1 is disposed in guide vane row not shown further.In the present embodiment, the jet head sets of a kind of three grades is therefore obtained.As can finding out in fig. 2, single rim of the guide blading halfbody 3a, 3b are installed in bracket groove 8, and described bracket groove is built in guide blade carrier 4 or guide blade carrier halfbody 4a, 4b.In order to precise match the rim of the guide blading 3 is fixed in guide blade carrier 4, the outer shroud 6 of the rim of the guide blading 3 and the bracket groove 8 of guide blade carrier 4 are complementally constructed.By the complementary structure of the outer shroud 6 of described bracket groove 8 and the rim of the guide blading 3, the described rim of the guide blading 3 can be ensured accurately to be fixed in described guide blade carrier 4.Described bracket groove 8 does not need the structure with distinguishingly structural configuration for this reason.In order to precise match guide blade carrier 4 and the rim of the guide blading 3 are fitted together, may need, before being encased in described bracket groove 8, aft-loaded airfoil is carried out for the described rim of the guide blading.Due between inner ring 5 that described guide vane 2 is solded into the described rim of the guide blading 3 and outer shroud 6, so the distortion of the described rim of the guide blading 3 may be caused.In addition because welding may cause surface oxidising, described surface oxidising can hinder again the loading carrying out precise match.
Claims (4)
1., for a kind of guide vane apparatus (1) of steam turbine, comprise
One be equipped with guide vane (2), the rim of the guide blading (3) that is divided into two rim of the guide blading halfbodies (3a, 3b) and
One to be arranged in steamturbine engine housing and to be divided into the guide blade carrier (4) of two guide blade carrier halfbodies (4a, 4b), described guide blade carrier for installing described rim of the guide blading halfbody (3a, 3b),
It is characterized in that, the described rim of the guide blading (3,3a, 3b) has an inner ring (5,5a, 5b) and an outer shroud (6,6a, 6b), and described guide vane (2) is solded between described inner ring (5,5a, 5b) and described outer shroud (6,6a, 6b).
2. guide vane apparatus according to claim 1 (1), is characterized in that, in guide blade carrier (4,4a, 4b), structure one is for holding the bracket groove (8) of the rim of the guide blading (3,3a, 3b).
3. guide vane apparatus according to claim 2 (1), is characterized in that, the outer shroud (6,6a, 6b) of the described rim of the guide blading (3,3a, 3b) and the bracket groove (8) of guide blade carrier (4,4a, 4b) are configured to complementary, and are fitted together to mutually.
4. the guide vane apparatus (1) according to any one of the claims, it is characterized in that, at rim of the guide blading halfbody (3a, 3b) with guide blade carrier halfbody (4a, one positioning screwn or locating stud (10) are set 4b), prevent described rim of the guide blading halfbody (3a, 3b) thus on mold joint (9) from landing in the bracket groove (8) of described guide blade carrier halfbody (4a, 4b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520291164.4U CN204921049U (en) | 2015-03-30 | 2015-03-30 | A guide blade device for steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520291164.4U CN204921049U (en) | 2015-03-30 | 2015-03-30 | A guide blade device for steam turbine |
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| Publication Number | Publication Date |
|---|---|
| CN204921049U true CN204921049U (en) | 2015-12-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520291164.4U Active CN204921049U (en) | 2015-03-30 | 2015-03-30 | A guide blade device for steam turbine |
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| Country | Link |
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| CN (1) | CN204921049U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108817815A (en) * | 2015-09-08 | 2018-11-16 | 中国航发常州兰翔机械有限责任公司 | The one stage diverter fixture of gas turbine of aero-engine |
-
2015
- 2015-03-30 CN CN201520291164.4U patent/CN204921049U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108817815A (en) * | 2015-09-08 | 2018-11-16 | 中国航发常州兰翔机械有限责任公司 | The one stage diverter fixture of gas turbine of aero-engine |
| CN109048217A (en) * | 2015-09-08 | 2018-12-21 | 中国航发常州兰翔机械有限责任公司 | One stage diverter of gas turbine of aero-engine |
| CN109079436A (en) * | 2015-09-08 | 2018-12-25 | 中国航发常州兰翔机械有限责任公司 | Blade trailing edge and lesser one stage diverter of gas turbine of ring gap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220414 Address after: Munich, Germany Patentee after: Siemens energy global Corp. Address before: Munich, Germany Patentee before: SIEMENS AG |
|
| TR01 | Transfer of patent right |