CN202756027U - Blade tip seal modification device - Google Patents
Blade tip seal modification device Download PDFInfo
- Publication number
- CN202756027U CN202756027U CN201220440266.4U CN201220440266U CN202756027U CN 202756027 U CN202756027 U CN 202756027U CN 201220440266 U CN201220440266 U CN 201220440266U CN 202756027 U CN202756027 U CN 202756027U
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- Prior art keywords
- mentioned
- boring
- blade tip
- hanger
- tip seal
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- Expired - Lifetime
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- 230000004048 modification Effects 0.000 title abstract 6
- 238000012986 modification Methods 0.000 title abstract 6
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 14
- 239000000725 suspension Substances 0.000 claims description 22
- 238000002407 reforming Methods 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000001915 proofreading effect Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 5
- 238000005755 formation reaction Methods 0.000 description 4
- 210000004907 gland Anatomy 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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Abstract
The utility model discloses a blade tip seal modification device which comprises a speed reducer for driving, two groups of support groups using as supporting points, a boring shaft driven by the speed reducer, a knife rest arranged on the boring shaft, a boring cutter installed on the knife rest and a dial indicator arranged at the end of the boring shaft and used for correcting concentric center. Each support group is provided with two supporting members, a hanging beam is fixedly connected between the two supporting members of the same group, a hanging assembly is installed on the hanging beam, the hanging assembly comprises a hanging frame which is sleeved on the hanging beam and can move on the hanging beam and a sliding member in sliding connection with the hanging frame, and the sliding member is provided with a bearing sleeve which can be closed and opened. The blade tip seal modification device has the advantages of facilitating structural adjustment, being capable of adapting to various application occasions, high in modification accuracy and simple to operate, giving consideration to economical efficiency and safety, shortening modification period, and reducing labor intensity and modification cost.
Description
Technical field
The utility model relates to a kind of reforming equipment of steam turbine, is specifically related to a kind of equipment that the steam turbine blade tip seal is transformed that is applied to.
Background technique
Steam turbine has stator and rotor two large divisions.Rotor high-speed rotation when work, stator is fixed, so must keep certain gap between rotor and the stator, does not make the phase mutual friction.When vapor stream was crossed each level work of steam turbine, pressure, temperature descended step by step, existed pressure reduction in the dividing plate both sides, also existed pressure reduction before and after the moving vane.Steam flows through the acting from the passage of stator, movable vane except the overwhelming majority, and sub-fraction can flow through from various gaps and not do work, and becomes a kind of loss, has reduced the efficient of unit.
Rotor also must pass cylinder, is supported on the bearing, also must leave the gap herein.For the front end of high pressure cylinder two ends and intermediate cylinder, the vapor pressure in the cylinder will have steam to spill herein greater than external atmospheric pressure, reduce unit efficiency, and cause the part condensate loss., pass in the gap of cylinder at main shaft because the vapor pressure in the cylinder is lower than extraneous atmospheric pressure at the two ends of the exhaust end of intermediate pressure cylinder and low pressure (LP) cylinder, will have air to bleed in the cylinder.Because air can not condense, thereby has reduced degree of vacuum, reduced steam acting ability in vapour condenser.
In order to reduce the gas leakage in the above-mentioned gap everywhere, guarantee again the normal safe operation of steam turbine, the spy is provided with various packings.These packings can be divided into flow passage component packing, diaphragm gland and shaft end gland seal three major types, wherein the flow passage component packing, comprise diaphragm gland and shroud packing, the shroud packing is arranged between the flange of vane tip and dividing plate outer rim, the normal employing inlayed chip or the flat tooth packing of sheet type, and labyrinth strip directly is embedded on the flange.Have also on shroud directly that car goes out gland sealing gear, corresponding stationary part is packed with the labyrinth ring that make the soft metal.
Leakage loss is the important component part of steam turbine internal losses.With regard to steam turbine, leakage loss normally internal losses 1/40 reduce the internal efficiency that leakage loss can increase substantially steam turbine, the flow passage component of steam turbine has had many improvement under the promotion of computational fluid mechanics, performance has increased significantly, and reduces leakage loss and more becomes the important measures that improve turbine efficiency.Studies show that further movable vane leaf top leakage loss is very large on the unit performance impact.In the turbine high-pressure level, leakage loss accounts for about 1/4 of grade total losses, and movable vane leaf top leakage loss accounts for about 1/5.It is also larger than profile loss or the secondary flow loss of stator blade or movable vane, and the latter only accounts for about 1/7.And because the packing diameter at this place is larger, the gap is leaked the vapour area and has just been increased a lot, and then cause efficient low as long as increase a little.Be Effective Raise unit high-pressure cylinder efficient, therefore be necessary in the overhaul process, this part resistance vapour sheet to be changed.Most Power Plant are in the overhaul process, transporting high pressure holding ring back main engine factory transforms, this mode has considerable influence to the maintenance duration of unit, in case the manufactory aspect is not opened owing to the in-plant equipment adjustment, to affect unit and return as scheduled dress, again inlaying resistance vapour sheet in manufactory processes pre-allowance and should not guarantee, can not adjust in case pre-allowance is large, and then affect correctional effect, freight out and home has also increased the repowering cost in addition, does not still have a kind of special device that can transform blade tip seal at the steam-turbine plant scene now.
The model utility content
For solving the deficiencies in the prior art, the purpose of this utility model is to provide a kind of can arrange the on-the-spot special-purpose reforming equipment that blade tip seal is processed at steam turbine.
In order to realize above-mentioned target, the utility model adopts following technological scheme:
The blade tip seal reforming equipment, comprise: the speed reducer that is used for driving, it is characterized in that, also comprise: be used for as the strong point two pack support groups, the boring axle that is driven by above-mentioned speed reducer, be arranged on knife rest on the above-mentioned boring axle, be installed in boring cutter on the above-mentioned knife rest, be arranged on above-mentioned boring shaft end be used for proofreading and correct concentric dial gauge; Above-mentioned support group is provided with two supporting members, be fixedly connected with the suspension crossbeam between above-mentioned two supporting members on the same group, above-mentioned suspension crossbeam is equipped with suspension assembly, above-mentioned suspension assembly comprises: be socketed on the above-mentioned suspension crossbeam and the hanger that can move and the slider that is slidingly connected with above-mentioned hanger formation thereon, above-mentioned slider is provided with the bearing housing that can close and open, and the two ends of above-mentioned boring axle are installed in respectively in the different bearing housings and are rotationally connected with above-mentioned slider formation.
Particularly, above-mentioned hanger both sides are provided be used to the cutting ferrule of fixing its position, and above-mentioned hanger cutting ferrule is socketed on the above-mentioned suspension crossbeam.Above-mentioned boring axle two ends are socketed with for spacing boring axle cutting ferrule.
Particularly, the numerical digit of above-mentioned dial gauge is 2, is separately positioned on above-mentioned knife rest both sides near the position of boring shaft end; Above-mentioned boring axle two ends are provided with for the fixing cutting ferrule of dial gauge position.
Particularly, above-mentioned speed reducer is arranged on the outside of above-mentioned boring axle one end, and the output shaft of speed reducer and boring axle consist of transmission.
Particularly, above-mentioned suspension assembly is provided be used to the lock bolt that locks above-mentioned hanger and latch.
Usefulness of the present utility model is: structure is convenient to adjust, and can adapt to various application occasions, and it is high to transform precision, has taken into account Economy and Security; Simple to operate, shorten the transformation cycle; Reduce labor intensity and reforming cost.
Description of drawings
Fig. 1 is the structural representation of a preferred embodiment of the present utility model.
The implication of reference character among the figure:
1-boring axle, the 2-knife rest, the 3-fixed flange, the 4-supporting member, 5-hangs crossbeam, 6-hanger, 7-slider, 701-bearing housing, 8-hanger cutting ferrule, 9-boring axle cutting ferrule.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done concrete introduction.
With reference to shown in Figure 1, blade tip seal reforming equipment of the present utility model mainly comprises: two pack support groups, boring axle 1, knife rest 2, boring cutter (not shown), dial gauge (not shown) etc.
Wherein, two pack support groups are mainly used in realizing why equipment of the present utility model the building of concrete transformation place, is divided into two groups, is because when building, and need to make boring axle 1 pass packing, and two pack support groups consist of it in the both sides of packing respectively and support.Particularly, the support group is provided with two supporting members 4 in order to realize the support to boring axle 1 in each support group, is provided with to hang crossbeam 5 between supporting member 4.
As preferred version, with reference to shown in Figure 1, supporting member 4 can be made of multi-sheets, wherein four blocks of sheet material consists of the housing of rectangles, and is larger as the plate face of the sheet material of base plate, fixes to make things convenient for itself and corresponding column, internal welding at housing is connected to two sheet materials that tilt to intersect, hang crossbeam 5 and adopt cylindrical body, adopt welding or other modes to be fixed on the top of the sheet material that tilts to intersect at the two ends that hang crossbeam 5, the wedge area between the two boards material is the end of stationary cylinder well.Here need to prove, the column of supporting member 4 belows can specifically arrange according to concrete application, the peripheral device structure that belongs to the utility model equipment, because when transforming for different packings, it is different hanging crossbeam 5 required antenna heights.
Hang crossbeam 5 in order to realize the suspension to boring axle 1, and can among a small circle, adjust the position of boring axle 1, at suspension crossbeam 5 suspension assembly is installed, particularly, suspension assembly is total is divided into two-part, first portion is hanger 6, it is mainly realized and hangs the effective of crossbeam 5 and be connected, need to prove, hanger 6 only is socket or hangs on the suspension crossbeam 5 that it can move along hanging crossbeam 5, is in order to adjust the position of boring axle 1 like this, in order to lock hanger 6 in the position that hangs on the crossbeam 5, be provided with two hanger cutting ferrules 8 in the both sides of hanger 6, this hanger cutting ferrule 8 is socketed in and hangs on the crossbeam 5, when setting the position of hanger 6, locking hanger cutting ferrule 8 makes it consist of spacing to hanger 6.As preferably, hanger 6 can adopt with supporting member 4 similar plate constructions overlap joints and form; Hanger cutting ferrule 8 has two semicircular ring to consist of, position in their docking is provided with screw, if need locking, namely with corresponding screw bolt and nut locking, need to prove, the internal diameter of the domain that consists of when their should be not more than the external diameter that hangs crossbeam 5, certainly be outside the cylinder during other forms when hanging crossbeam 5, accordingly hanger cutting ferrule 8 also should do adaptive, this those skilled in the art, be apparent, therefore do not given unnecessary details at this.
Another part of suspension assembly is slider 7, slider 7 is slidingly connected with hanger 6 formations, that is to say that slider 7 and hanger 6 can relative slidings, because when normally arranging, we think that hanging crossbeam 5 is levels, we can be by adjusting hanger 6 position thereon, adjust the horizontal position of boring axle 1, so in order to adjust the vertical position of boring axle 1, we are provided with slider 7, and itself and hanger 6 consist of being slidingly connected of vertical direction, and this being slidingly connected is can be blocked, this concrete structure that is slidingly connected can be realized by various ways, as preferably, hanger 6 forms the groove slide rails, and slider 7 is formed with the slide block that can embed the groove slide rail, as for locking, can have screw at the groove slide rail of hanger 6, then utilize and pass this screw lock bolt realization, when needing locking, screw lock bolt and make it to contact with slider 7, realize locking thereby force slider 7 to be adjacent to hanger 6.
From upper we can find out, the position of slider 7 level and vertically both direction can both adjust, be rotationally connected so boring axle 1 consists of with slider 7, can realize the suspension of boring axle 1.Therefore, slider 7 is provided with bearing housing 701, boring axle 1 two ends are installed in respectively in the bearing housing 701 of both sides, so, has namely realized the suspension that boring axle 1 can trim locations.
Need to prove that bearing housing 701 can close or open on demand, so conveniently setting up and adjusting when construction as preferably, is provided with for spacing boring axle cutting ferrule 9 at the two ends of boring axle 1.This boring axle cutting ferrule 9 is used for arranging the dial gauge of both sides.Concrete structure and the hanger cutting ferrule 8 of boring axle cutting ferrule 9 are similar.
For fixing speed reducer, one the outside is provided with one and is used for the fixedly fixed flange 3 of speed reducer in two hangers 6, and speed reducer can be fixed by fixed flange 3, the output shaft of speed reducer and the 1 formation transmission of boring axle, can drive boring axle 1 and rotate, thereby drive boring cutter.
For the control that realizes machining accuracy and to the work such as centering leveling of boring axle 1, as preferably, the numerical digit of dial gauge is 2, is separately positioned on knife rest 2 both sides near the position of boring axle 1 end, contrasts simultaneously two dial gauges and can effectively adjust the 1 realization correction of boring axle with one heart.
More than show and described basic principle of the present utility model, major character and advantage.The technician of the industry should understand, and above-described embodiment does not limit the utility model in any form, and all employings are equal to replaces or technological scheme that the mode of equivalent transformation obtains, all drops in the protection domain of the present utility model.
Claims (6)
1. blade tip seal reforming equipment, comprise: the speed reducer that is used for driving, it is characterized in that, also comprise: be used for as the strong point two pack support groups, the boring axle that is driven by above-mentioned speed reducer, be arranged on knife rest on the above-mentioned boring axle, be installed in boring cutter on the above-mentioned knife rest, be arranged on above-mentioned boring shaft end be used for proofreading and correct concentric dial gauge; Above-mentioned support group is provided with two supporting members, be fixedly connected with the suspension crossbeam between above-mentioned two supporting members on the same group, above-mentioned suspension crossbeam is equipped with suspension assembly, above-mentioned suspension assembly comprises: be socketed on the above-mentioned suspension crossbeam and the hanger that can move and the slider that is slidingly connected with above-mentioned hanger formation thereon, above-mentioned slider is provided with the bearing housing that can lock and open, and the two ends of above-mentioned boring axle are installed in respectively in the different bearing housings and are rotationally connected with above-mentioned slider formation.
2. blade tip seal reforming equipment according to claim 1 is characterized in that, above-mentioned hanger both sides are provided be used to the hanger cutting ferrule of fixing its position, and above-mentioned hanger cutting ferrule is socketed on the above-mentioned suspension crossbeam.
3. blade tip seal reforming equipment according to claim 1 is characterized in that, above-mentioned boring axle two ends are socketed with for spacing boring axle cutting ferrule.
4. blade tip seal reforming equipment according to claim 1 is characterized in that, above-mentioned speed reducer is arranged on the outside of above-mentioned boring axle one end, and the pivot of speed reducer and boring axle consist of transmission.
5. blade tip seal reforming equipment according to claim 1 is characterized in that, above-mentioned suspension assembly is provided be used to the lock bolt that locks above-mentioned hanger and latch.
6. blade tip seal reforming equipment according to claim 1 is characterized in that, the numerical digit of above-mentioned dial gauge is 2, is separately positioned on above-mentioned knife rest both sides near the position of boring shaft end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220440266.4U CN202756027U (en) | 2012-08-31 | 2012-08-31 | Blade tip seal modification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220440266.4U CN202756027U (en) | 2012-08-31 | 2012-08-31 | Blade tip seal modification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202756027U true CN202756027U (en) | 2013-02-27 |
Family
ID=47735214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220440266.4U Expired - Lifetime CN202756027U (en) | 2012-08-31 | 2012-08-31 | Blade tip seal modification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202756027U (en) |
-
2012
- 2012-08-31 CN CN201220440266.4U patent/CN202756027U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: JIANGSU TURBINE SEAL HIGH-TECHNOLOGY CO., LTD. Free format text: FORMER NAME: JIANGSU TURBINE SEAL HIGH-TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 210046, Nanjing District, Jiangsu City, Qixia Province, Gan home, 108 East, Nanjing Golden Port (state) Science Park 6 Patentee after: JIANGSU TURBINE SEAL HIGH-TECHNOLOGY Co.,Ltd. Address before: 210046, Nanjing District, Jiangsu City, Qixia Province, Gan home, 108 East, Nanjing Golden Port (state) Science Park 6 Patentee before: JIANGSU TURBINE SEAL HIGH-TECHNOLOGY Co.,Ltd. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Blade tip seal modification device Effective date of registration: 20141120 Granted publication date: 20130227 Pledgee: Bank of Beijing Limited by Share Ltd. Nanjing branch Pledgor: JIANGSU TURBINE SEAL HIGH-TECHNOLOGY Co.,Ltd. Registration number: 2014320000016 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Shen Xiannian Inventor after: Zuo Fei Inventor after: Guo Linyong Inventor after: Xu Xiuqin Inventor before: Shen Xiannian Inventor before: Guo Linyong Inventor before: Xu Xiuqin |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: SHEN XIANNIAN GUO LINYONG XU XIUQIN TO: SHEN XIANNIAN ZUO FEI GUO LINYONG XU XIUQIN |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20170622 Granted publication date: 20130227 Pledgee: Bank of Beijing Limited by Share Ltd. Nanjing branch Pledgor: JIANGSU TURBINE SEAL HIGH-TECHNOLOGY Co.,Ltd. Registration number: 2014320000016 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170724 Address after: 116600 No. 723, block B, Taihua Hotel, Dalian Free Trade Zone, Liaoning Patentee after: Dalian Free Trade Zone Huahong Industrial Technology Co.,Ltd. Address before: 210046, Nanjing District, Jiangsu City, Qixia Province, Gan home, 108 East, Nanjing Golden Port (state) Science Park 6 Patentee before: JIANGSU TURBINE SEAL HIGH-TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130227 |