CN201221993Y - Apparatus for measuring static torque of steam turbine rotor vane - Google Patents
Apparatus for measuring static torque of steam turbine rotor vane Download PDFInfo
- Publication number
- CN201221993Y CN201221993Y CNU2008200869197U CN200820086919U CN201221993Y CN 201221993 Y CN201221993 Y CN 201221993Y CN U2008200869197 U CNU2008200869197 U CN U2008200869197U CN 200820086919 U CN200820086919 U CN 200820086919U CN 201221993 Y CN201221993 Y CN 201221993Y
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- China
- Prior art keywords
- blade
- turbine rotor
- measurement mechanism
- torque measurement
- root
- Prior art date
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- Expired - Lifetime
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- 230000003068 static Effects 0.000 title abstract 2
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 238000005259 measurement Methods 0.000 claims description 24
- 238000010276 construction Methods 0.000 claims description 8
- 238000009434 installation Methods 0.000 abstract description 2
- 238000004904 shortening Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004326 stimulated echo acquisition mode for imaging Methods 0.000 description 1
Abstract
The utility model discloses a static torque measuring device for rotor blades of steam turbines, which mainly comprises a frame, a fixing bracket, a blade root electronic scale, a blade-root rack supporting rod, a blade-tip rack supporting rod, a blade tip electronic scale and a movable bracket. The blade root electronic scale is disposed on the fixing bracket, the blade-root rack supporting rod is disposed on the blade root electronic scale, a front datum plane and a rear datum plane are arranged in the front of the blade-root rack supporting rod, a left datum plane and a right datum plane are arranged on the lateral face of the blade-root rack supporting rod, the blade tip electronic scale is arranged on the movable bracket, the blade-tip rack supporting rod is arranged on the blade tip electronic scale, the movable bracket engaged with a screw pair is arranged on a linear guide rail and a clamping T-shaped groove, and the movable bracket moves horizontally on the linear guide rail and the clamping T-shaped groove under the transmission of the screw pair. The utility model has the advantages of high precision, simple operation and low cost, particularly the provided measuring device is compact in design, small in volume and convenient in operation, and the blades can be finely arranged before installation, thereby shortening the experiment time on a dynamic balancing machine.
Description
Technical field
The utility model relates to a kind of locked rotor torque of turbine rotor blade and measures and the equally distributed technology of factored moment particularly a kind of locked rotor torque measurement mechanism of turbine rotor blade.
Background technology
At present, the locked rotor torque of internal vapor turbine industry before spinner blade is installed measured the general quality of using the separate unit electronic scales to measure every blade, carries out symmetry according to the quality difference then and installs.This metering system makes that dynamic balance test of rotor efficient is low and counterweight is difficult.Yet buy external moment measuring equipment, cost an arm and a leg, complicated operation.
The utility model content
The purpose of this utility model is the locked rotor torque measurement mechanism that a kind of measuring accuracy height, simple to operate, turbine rotor blade that cost is low are provided for the deficiency that solves above-mentioned technology.
In order to achieve the above object, the locked rotor torque measurement mechanism of a kind of turbine rotor blade that the utility model is designed: mainly comprise frame, analog bracket, blade root electronic scales, blade root frame support rails, leaf ceiling hold support bar, leaf top electronic scales and movable support bracket, the blade root electronic scales is located on the analog bracket, the blade root frame support rails is set on the blade root electronic scales, before the blade root frame support rails, is provided with the front and back reference field, is provided with left and right sides reference field in blade root frame support rails side; Leaf top electronic scales is located on the movable support bracket, leaf top electronic scales is provided with leaf ceiling hold support bar, movable support bracket cooperates with lead screw pair, and is located on linear guides and the clamping T type groove, in the horizontal shift on linear guides and clamping T type groove of movable support bracket under the transmission of lead screw pair.Its advantage is the bearing accuracy height, and is easy for installation, and reliable clamping is simple to operate.Be provided with spacing shelves in linear rail end, with the shift position of restriction mobile pallet.The other position of movable support bracket on frame is provided with the ball bar digital display device, and the ball bar digital display device comprises ball bar digital display meter, crawler belt and ball bar, measures length of blade by the ball bar digital display device.Because ball bar is lower to environmental requirement, fault is few, and the precision height need not often be safeguarded.
Be to guarantee measurement precision, be provided with shockproof parallels, select shockproof parallels for use, both played anti-vibration protected effect, also can regulate this machine level simultaneously at the footing of frame.In addition, electronic scales itself also has aseismatic design preferably.Blade root electronic scales digital display meter, ball bar digital display meter, leaf top electronic scales digital display meter are located on the dial framework, and dial framework is fixed on the frame.
During enforcement, frame can adopt weldment, constitutes cabinet type structure, and this compact conformation is both artistic and practical.Described linear guides can be the linear cylindrical guide that the pole supporting construction constitutes.Be that linear guides selects for use friction force little, safeguard simple linear cylindrical guide.Be the pole supporting construction on the frock, realize the line contact, reduced measuring error.
The vertical direction of leaf ceiling hold support bar need be finely tuned level, is screw thread transmission, reverse nut lock structure, this structure reliable transmission, and easy to operate, self-locking performance is good.
Press the locked rotor torque of the locked rotor torque measurement mechanism MEASUREMENT OF STEAM turbine wheel blade of the resulting a kind of turbine rotor blade of the utility model, the measuring accuracy height, simple to operate, cost is low, particularly the measurement mechanism that is provided is compact to design, volume is little, easy to operate, finish the arrange work of blade before installing preferably, shorten the test period of rotor on the high-speed balancing machine.
Description of drawings
Fig. 1 is the stressed synoptic diagram of the moment of blade;
Fig. 2 is the plan structure synoptic diagram of Fig. 1;
Fig. 3 is the moment Force Calculation synoptic diagram of blade;
Fig. 4 is the torque measuring device embodiment general structure synoptic diagram of blade.
Wherein: shockproof parallels 1; Frame 2; Spacing shelves 3; Analog bracket 4; Blade root electronic scales 5; Front and back reference field 6; Left and right sides reference field 7; Blade root frame support rails 8; Leaf ceiling hold support bar 9; Blade root electronic scales digital display meter 10; Ball bar digital display meter 11; Leaf top electronic scales digital display meter 12; Dial framework 13; Crawler belt 14; Ball bar 15; Linear guides 16; Lead screw pair 17; Clamp T type groove 18; Leaf top electronic scales 19; Movable support bracket 20; Blade 21; Ball bar digital display device 22; Grip nut 23.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings below by embodiment.
Embodiment:
As shown in Figure 4, the locked rotor torque measurement mechanism of a kind of turbine rotor blade that present embodiment provides, mainly comprise frame 2, analog bracket 4, blade root electronic scales 5, blade root frame support rails 8, leaf ceiling hold support bar 9, leaf top electronic scales 19 and movable support bracket 20, blade root electronic scales 5 is located on the analog bracket 4, and blade root frame support rails 8 is set on blade root electronic scales 5, is provided with front and back reference field 6 before blade root frame support rails 8, is provided with left and right sides reference field 7 in blade root frame support rails 8 sides; Leaf top electronic scales 19 is located on the movable support bracket 20, leaf top electronic scales 19 is provided with leaf ceiling hold support bar 9, movable support bracket 20 cooperates with lead screw pair 17, and be located on linear guides 16 and the clamping T type groove 18, in the horizontal shift on linear guides 16 and clamping T type groove 18 of movable support bracket 20 under the transmission of lead screw pair 17.
Be provided with spacing shelves 3 in linear guides 16 ends, with the shift position of restriction mobile pallet 20.Movable support bracket 20 other positions on frame 2 are provided with ball bar digital display device 22, and ball bar digital display device 22 comprises ball bar digital display meter 11, crawler belt 14 and ball bar 15, measures length of blade by ball bar digital display device 22.
Be to guarantee measurement precision, be provided with shockproof parallels 1 at the footing of frame 2, blade root electronic scales digital display meter 10, ball bar digital display meter 11, leaf top electronic scales digital display meter 12 are located on the dial framework 13, and dial framework 13 is fixed on the frame 2.
Frame 2 adopts weldment, constitutes cabinet type structure.Described linear guides 16 is linear cylindrical guides that the pole supporting construction constitutes, and promptly linear guides 16 selects for use friction force little, safeguards simple linear cylindrical guide.Be the pole supporting construction on the frock, realize the line contact, reduced measuring error.
During measurement, the locked rotor torque measurement mechanism of a kind of turbine rotor blade that provides by the utility model, the operator gently is placed into blade 21 to be measured on blade root frame support rails 8 and the leaf ceiling hold support bar 9 earlier, regulates leaf ceiling hold support bar 9 height, and the radiant rays of visual blade 21 is near level.Touch blade 21 then by reference field 6 before and after good, visual blade root end face and reference field develop, and gently move blade 21 at last by good left and right sides reference field 7.After treating that each electronic scales video data is stable, the record reading.After finishing 21 measurements of this batch blade, unclamp grip nut 23, mobile bracket 20 carries out next group and measures.
Fig. 1, Fig. 2 and shown in Figure 3, the locked rotor torque measurement mechanism of a kind of turbine rotor blade that present embodiment is designed, the blade root and the leaf of twisted blade are pushed up as two strong points, weigh up the weight that two strong points are born with high-precision electronic scales, again in conjunction with the distance between two strong points, utilize formula to calculate the moment of this blade, its concrete computing formula is as described below: suppose that center of gravity is G, according to centrifugal force formula: F=m * r * ω
2=G * r * ω
2/ g=(the ω of G1 * r1+G2 * r2)
2/ g; R1=R root+a wherein; R2=R root+a+L; A is the distance of blade root frock fulcrum to reference field, provides during the design frock; L is the distance between the two frock fulcrums, i.e. the distance of ball bar measurement; Derive thus: F
i=(G
i1 * r
i1+G
i2 * r
i2) ω
2/ g, angle is θ
iThe time, in order to reach balance, to that is to say following formula is set up:
Calculate best blade arrangement thus.
Claims (9)
1, a kind of locked rotor torque measurement mechanism of turbine rotor blade, mainly comprise frame (2), analog bracket (4), blade root electronic scales (5), blade root frame support rails (8), leaf ceiling hold support bar (9), leaf top electronic scales (19) and movable support bracket (20), it is characterized in that blade root electronic scales (5) is located on the analog bracket (4), blade root frame support rails (8) is set on blade root electronic scales (5), blade root frame support rails (8) preceding be provided with before and after reference field (6), be provided with left and right sides reference field (7) in blade root frame support rails (8) side; Leaf top electronic scales (19) is located on the movable support bracket (20), leaf top electronic scales (19) is provided with leaf ceiling hold support bar (9), movable support bracket (20) cooperates with lead screw pair (17), and be located on linear guides (16) and the clamping T type groove (18), movable support bracket under the transmission of lead screw pair (17) (20) is at linear guides (16) and clamp upward horizontal shift of T type groove (18).
2, the locked rotor torque measurement mechanism of a kind of turbine rotor blade according to claim 1 is characterized in that being provided with in linear guides (16) end spacing shelves (3).
3, the locked rotor torque measurement mechanism of a kind of turbine rotor blade according to claim 1 and 2, it is characterized in that the other position of movable support bracket (20) on frame (2) is provided with ball bar digital display device (22), ball bar digital display device (22) comprises ball bar digital display meter (11), crawler belt (14) and ball bar (15).
4, the locked rotor torque measurement mechanism of a kind of turbine rotor blade according to claim 1 and 2 is characterized in that being provided with shockproof parallels (1) at the footing of frame (2).
5, the locked rotor torque measurement mechanism of a kind of turbine rotor blade according to claim 3 is characterized in that being provided with shockproof parallels (1) at the footing of frame (2).
6, the locked rotor torque measurement mechanism of a kind of turbine rotor blade according to claim 1 and 2 is characterized in that described linear guides (16) is the linear cylindrical guide that the pole supporting construction constitutes.
7, the locked rotor torque measurement mechanism of a kind of turbine rotor blade according to claim 3 is characterized in that described linear guides (16) is the linear cylindrical guide that the pole supporting construction constitutes.
8, the locked rotor torque measurement mechanism of a kind of turbine rotor blade according to claim 4 is characterized in that described linear guides (16) is the linear cylindrical guide that the pole supporting construction constitutes.
9, the locked rotor torque measurement mechanism of a kind of turbine rotor blade according to claim 5 is characterized in that described linear guides (16) is the linear cylindrical guide that the pole supporting construction constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200869197U CN201221993Y (en) | 2008-05-05 | 2008-05-05 | Apparatus for measuring static torque of steam turbine rotor vane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200869197U CN201221993Y (en) | 2008-05-05 | 2008-05-05 | Apparatus for measuring static torque of steam turbine rotor vane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201221993Y true CN201221993Y (en) | 2009-04-15 |
Family
ID=40575499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200869197U Expired - Lifetime CN201221993Y (en) | 2008-05-05 | 2008-05-05 | Apparatus for measuring static torque of steam turbine rotor vane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201221993Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101271032B (en) * | 2008-05-05 | 2010-07-14 | 杭州汽轮机股份有限公司 | Measuring method and device for locked rotor torque of turbine rotor blade |
| CN102628723A (en) * | 2012-04-19 | 2012-08-08 | 江苏大学 | Fowl egg mass center detecting method |
| CN102901664A (en) * | 2012-09-28 | 2013-01-30 | 浙江华电器材检测研究所 | Stepping-in type mechanical performance universal testing machine |
-
2008
- 2008-05-05 CN CNU2008200869197U patent/CN201221993Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101271032B (en) * | 2008-05-05 | 2010-07-14 | 杭州汽轮机股份有限公司 | Measuring method and device for locked rotor torque of turbine rotor blade |
| CN102628723A (en) * | 2012-04-19 | 2012-08-08 | 江苏大学 | Fowl egg mass center detecting method |
| CN102628723B (en) * | 2012-04-19 | 2015-09-02 | 江苏大学 | A kind of birds, beasts and eggs center of mass determination method |
| CN102901664A (en) * | 2012-09-28 | 2013-01-30 | 浙江华电器材检测研究所 | Stepping-in type mechanical performance universal testing machine |
| CN102901664B (en) * | 2012-09-28 | 2014-12-03 | 浙江华电器材检测研究所 | Stepping-in type mechanical performance universal testing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090415 Effective date of abandoning: 20080505 |