CN204041124U - Steam turbine blade screw rod in last years of a century locking mechanism - Google Patents
Steam turbine blade screw rod in last years of a century locking mechanism Download PDFInfo
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- CN204041124U CN204041124U CN201420531092.1U CN201420531092U CN204041124U CN 204041124 U CN204041124 U CN 204041124U CN 201420531092 U CN201420531092 U CN 201420531092U CN 204041124 U CN204041124 U CN 204041124U
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- blade root
- moving vane
- century
- screw rod
- last years
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Abstract
The utility model discloses a kind of steam turbine blade screw rod in last years of a century locking mechanism, comprise rotor, moving vane, final blage, last years of a century screw rod, steel ball and pad gap bar.It is characterized in that, on described rotor, circumference has T-shaped blade root slot, has blade load breach at blade root slot special position, and moving vane embeds rotor by gap slot and can circumferentially slide, adjacent two moving vane close installation of loading.After the installation of whole circle moving vane, load final blage at gap slot place and use the screw rod junction of the edges of two sheets of paper to squeeze between rotor and last years of a century, whole circle blade is fixed.The utility model has the features such as structure is simple, easy for installation, good fixing effect, is conducive to the safe operation of steam turbine, is applicable to industrial steam turbine moving vane at different levels and installs and uses.
Description
Technical field
The utility model relates to a kind of locking mechanism of industrial turbine movable blade, is applicable to moving vane at different levels and installs and uses.
Background technique
Industrial steam turbine is the power equipment of rotor mechanical energy by the thermal energy of flowing medium, and its core component is rotor, and rotor is made up of rotor body and the moving vane be arranged on body.Moving vane is that requirement assurance device is long-term, the critical component of safety, Effec-tive Function, the running environment very severe of moving vane, and air-flow nonuniformity is very large, and excitation force is comparatively large, so very high to the designing requirement of moving vane locking mechanism.Current domestic and international more employing fir-tree root, this leaf and root structure is complicated, mating face is more, in order to ensure that each pair of tooth contact is good, higher to requirement on machining accuracy, complex process, and the labour cost of moving vane assembling and maintain and replace is high, and work difficulty is large.In addition because the number of teeth is more, and be subject to size restrictions, knuckle cannot do greatly, easily causes stress to concentrate, and when running environment is severe, blade root knuckle place easily cracks, and causes blade to rupture from blade root, affects the safe operation of device.
Summary of the invention
Steam turbine blade for prior art installs the deficiency that locking mechanism exists, the purpose of this utility model is the locking mechanism being to provide a kind of Industrial Steam Turbine Rotors Aided moving vane, be convenient to carry out blade assembling and examine and replace, locking effect is good, reduces work difficulty and labour cost.
For achieving the above object, the utility model adopts following technological scheme.
A kind of steam turbine blade screw rod in last years of a century locking mechanism, comprise rotor and final blage, it is characterized in that described rotor outer circumference has annular T-shaped blade root slot, several moving vane is fixedly installed at T-shaped blade root slot, T-shaped blade root for coordinating with T-shaped blade root slot bottom moving vane, T-shaped blade root slot is provided with at least one installation gap, this installation gap can make the blade root of moving vane pass through and enter T-shaped blade root slot, installation gap position correspondence installs final blage, and final blage is fixed by fastening piece and installation gap; And the blade root of described moving vane and final blage is wedge-shaped structure, its left and right attachment face is inclined-plane and the circle centre position that can extend to rotor intersects, and is close installation between arbitrary neighborhood two blades.The feature of this structure utilizes the cooperating structure of T-slot and T-shaped blade root to fix moving vane, and what utilize installation gap is arranged so that moving vane can easily enter in T-slot, finally utilizes final blage to seal breach, completes vaned fixed installation.
In order to improve the stability of blades installation, eliminating the gap between blade and rotor, being provided with between the bottom of described moving vane and the bottom of final blage and T-shaped blade root slot and padding gap bar.
In order to improve the stability that rotor motion is, the blade root of described final blage is provided with lightening hole, and is fixed by the junction of the edges of two sheets of paper screw rod in last years of a century be arranged between rotor and final blage, and in last years of a century, the bottom of screw rod is provided with steel ball.
The utility model steam turbine blade screw rod in last years of a century locking mechanism, overcomes the deficiencies in the prior art, and when assembling or maintenance, blade is more easy to assemble, locking effect good, be more conducive to the safe operation of steam turbine.
Accompanying drawing explanation
Fig. 1 is the sectional view at the installation gap place of the utility model moving vane locking mechanism.
Fig. 2 is the plan view of the utility model moving vane locking mechanism.
Fig. 3 is the utility model moving vane structural representation.
Fig. 4 is the utility model final blage structural representation.
Fig. 5 is the schematic diagram of the utility model blade root wedge-shaped structure.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
With reference to accompanying drawing, wherein, 1, final blage, 2, rotor, 3, last years of a century screw rod, 4, pad gap bar, 5, steel ball, 6, moving vane, 7, wedge shape.
As Figure 1-5, rotor 2 circumferencial direction described in the utility model is processed with the T-shaped blade root slot of whole circle, and the installation gap of a moving vane 6 is had at special position, moving vane 6 adopts T-shaped blade root, its size coordinates with the blade root slot on rotor 2, pad gap bar 4 is inserted bottom moving vane 6, to eliminate the radial clearance of moving vane 6 and rotor 2 blade root slot, moving vane 6 is by after only inserting gap slot, circumference slides into and fits tightly between two, after whole circle moving vane 6 installs, only leave installation gap and install for final blage 1.
As shown in Figure 5, described moving vane 6 and the left and right attachment face of final blage 1 are all processed into inclined-plane by radial ray, left and right attachment face extends to circle centre position and intersects, every blade and blade root is all wedge shape 7, after all moving vanes 6 at the same level install, squeeze into final blage 1 in the gap slot position vacated, utilize the wedge shape interference swelling of blade root, make whole circle blade realize circumferential and axial and fix.
As shown in Figure 1, after described final blage 1 loads the whole circle blade of gap slot swelling, with the axial seam place of rotor 2, at final blage about 1 junction of the edges of two sheets of paper, screw rod 3 in last years of a century is installed, and bottom screw, puts into steel ball 5,3 to tighten in order to detect last years of a century screw rods, finally be screwed into screw rod 3 in last years of a century, because screw rod 3 length in last years of a century is greater than beaten screw hole depth, tighten the part that rear excision screw rod in last years of a century 3 exposes rotor 2, and turnery processing flushes to rotor 2.
In sum, be preferred embodiment of the present utility model, all changes done according to technical solutions of the utility model, when the function produced does not exceed the scope of technical solutions of the utility model, all belong to protection domain of the present utility model.
Claims (3)
1. steam turbine blade screw rod in a last years of a century locking mechanism, comprise rotor and final blage, it is characterized in that described rotor outer circumference has annular T-shaped blade root slot, several moving vane is fixedly installed at T-shaped blade root slot, T-shaped blade root for coordinating with T-shaped blade root slot bottom moving vane, T-shaped blade root slot is provided with at least one installation gap, this installation gap can make the blade root of moving vane pass through and enter T-shaped blade root slot, installation gap position correspondence installs final blage, and final blage is fixed by fastening piece and installation gap; And the blade root of described moving vane and final blage is wedge-shaped structure, its left and right attachment face is inclined-plane and the circle centre position that can extend to rotor intersects, and is close installation between arbitrary neighborhood two blades.
2. a kind of steam turbine blade screw rod in last years of a century locking mechanism according to claim 1, is characterized in that being provided with between the bottom of described moving vane and final blage and the bottom of T-shaped blade root slot padding gap bar.
3. a kind of steam turbine blade screw rod in last years of a century locking mechanism according to claim 1 and 2, it is characterized in that the blade root of described final blage is provided with lightening hole, and fixed by the junction of the edges of two sheets of paper screw rod in last years of a century be arranged between rotor and final blage, in last years of a century, the bottom of screw rod is provided with steel ball.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531092.1U CN204041124U (en) | 2014-09-17 | 2014-09-17 | Steam turbine blade screw rod in last years of a century locking mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420531092.1U CN204041124U (en) | 2014-09-17 | 2014-09-17 | Steam turbine blade screw rod in last years of a century locking mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204041124U true CN204041124U (en) | 2014-12-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201420531092.1U Active CN204041124U (en) | 2014-09-17 | 2014-09-17 | Steam turbine blade screw rod in last years of a century locking mechanism |
Country Status (1)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089317A (en) * | 2016-06-08 | 2016-11-09 | 哈尔滨汽轮机厂有限责任公司 | Turbine rotor profile of tooth blade root locking piece in last years of a century assembly method |
| CN107322060A (en) * | 2017-07-19 | 2017-11-07 | 哈尔滨汽轮机厂有限责任公司 | A kind of threaded rotor last years fore shaft processing method |
| CN109931112A (en) * | 2019-04-28 | 2019-06-25 | 杭州汽轮机股份有限公司 | A kind of free blade construction of steam turbine and its assembly method |
| CN110145372A (en) * | 2019-05-25 | 2019-08-20 | 立德动力设备(浙江)有限公司 | A kind of turbine rotor fork-shaped blade installation structure and its installation method |
| CN113931701A (en) * | 2021-09-30 | 2022-01-14 | 中国长江动力集团有限公司 | Last blade fixing method and fixing structure |
-
2014
- 2014-09-17 CN CN201420531092.1U patent/CN204041124U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106089317A (en) * | 2016-06-08 | 2016-11-09 | 哈尔滨汽轮机厂有限责任公司 | Turbine rotor profile of tooth blade root locking piece in last years of a century assembly method |
| CN106089317B (en) * | 2016-06-08 | 2017-06-23 | 哈尔滨汽轮机厂有限责任公司 | Turbine rotor tooth form blade root last years locking piece assembly method |
| CN107322060A (en) * | 2017-07-19 | 2017-11-07 | 哈尔滨汽轮机厂有限责任公司 | A kind of threaded rotor last years fore shaft processing method |
| CN107322060B (en) * | 2017-07-19 | 2019-02-26 | 哈尔滨汽轮机厂有限责任公司 | A kind of threaded rotor last years fore shaft processing method |
| CN109931112A (en) * | 2019-04-28 | 2019-06-25 | 杭州汽轮机股份有限公司 | A kind of free blade construction of steam turbine and its assembly method |
| CN110145372A (en) * | 2019-05-25 | 2019-08-20 | 立德动力设备(浙江)有限公司 | A kind of turbine rotor fork-shaped blade installation structure and its installation method |
| CN110145372B (en) * | 2019-05-25 | 2021-08-10 | 立德动力设备(浙江)有限公司 | Steam turbine rotor forked blade mounting structure and mounting method thereof |
| CN113931701A (en) * | 2021-09-30 | 2022-01-14 | 中国长江动力集团有限公司 | Last blade fixing method and fixing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 310022 Building 1, No. 608, Kangxin Road, Linping District, Hangzhou, Zhejiang Patentee after: Hangzhou Turbine Power Group Co.,Ltd. Address before: No. 357, Shiqiao Road, Jianggan District, Hangzhou, Zhejiang 310022 Patentee before: HANGZHOU STEAM TURBINE Co.,Ltd. |