CN202971019U - Measuring device for adjusting water turbine paddle - Google Patents
Measuring device for adjusting water turbine paddle Download PDFInfo
- Publication number
- CN202971019U CN202971019U CN2012207243937U CN201220724393U CN202971019U CN 202971019 U CN202971019 U CN 202971019U CN 2012207243937 U CN2012207243937 U CN 2012207243937U CN 201220724393 U CN201220724393 U CN 201220724393U CN 202971019 U CN202971019 U CN 202971019U
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- blade
- pipe clamp
- rotating shaft
- gauge line
- measuring device
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 238000005259 measurement Methods 0.000 abstract description 17
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000006073 displacement reaction Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 238000012937 correction Methods 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000000429 assembly Methods 0.000 description 1
- 238000007630 basic procedure Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Hydraulic Turbines (AREA)
Abstract
本实用新型公开了一种用于水轮机桨叶调整的测量装置，包括软管、计量管和一对用于连接计量管与所述桨叶的夹具，各桨叶夹具上可转动的装设一件计量管，两件计量管竖直设置且底端通过软管连通，所述计量管和软管中装有计量用液体。该用于水轮机桨叶调整的测量装置具有结构简单、操作方便，可以实现在水轮机检修现场进行准确测量的优点。
The utility model discloses a measuring device for adjusting blades of a water turbine, which comprises a hose, a metering tube and a pair of clamps for connecting the metering tube and the blades, and a rotatable blade is installed on each blade clamp. The two metering tubes are vertically arranged and the bottom ends are connected through a flexible pipe, and the metering tube and the flexible pipe are equipped with metering liquid. The measuring device for adjusting blades of the water turbine has the advantages of simple structure, convenient operation and accurate measurement at the maintenance site of the water turbine.
Description
Technical field
The blade that the utility model relates in the tubular turbine installation and repairing is measured, and relates in particular to the measuring device of adjusting for hydraulic turbine blades.
Background technique
Along with the develop rapidly of power industry, the demand of the power equipments such as water turbine is constantly increased the quality requirement increasingly stringent.Turbine blade is as the vital part in water turbine, blade rotating angle directly has influence on the working life of hydraulic performance, generating efficiency, run stability and this water wheels unit of whole water wheels unit, this just the hydraulic turbine blades outer corner measurement be subject to the reason that people pay close attention to adjusting.
At present, the device fabrication producer of water turbine usually all can be before delivery, the tubular turbine runner is carried out preassembly, and meet the requirement of design drawing in preassembly after, corresponding driving parts to each blade performs key words sorting and position mark, split that to be transported to the installation of water wheels unit on-the-spot, the mark that performs during then according to preassembly re-assemblies again.This mode has reduced the job site and has carried out the difficulty that the water wheels unit is installed.But this also easily causes the corner size of each blade of water turbine unequal, and difference is larger.For example, when the corner design value of each blade is 27.5 ° ± 0.5 °, No. 1 the blade corner is 27.9 °, No. 4 the blade corner is 27 °, both deviations reach 0.9 °, and after date when one section of hydraulic turbine operation finds that this blade corner deviation is also when causing one of not high factor of water turbine working efficiency, just need to revise the corner of blade, make the corner of each blade even.Yet, owing to can't at the scene the corner of hydraulic turbine blades being measured accurately at present, whole runner depot repair can only be adjusted, cause fault power time prolongation, maintenance expenses significantly to rise.
The model utility content
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, provides a kind of simple in structure, easy to operate, can realize the measuring device that is used for the hydraulic turbine blades adjustment that carries out accurately measuring at the water turbine Overhaul site.
For solving the problems of the technologies described above, the utility model by the following technical solutions:
A kind of measuring device for the hydraulic turbine blades adjustment, comprise flexible pipe, gauge line and be connected for the fixture that connects gauge line and described blade, gauge line of rotating installing on each blade fixture, two gauge lines vertically arrange and the bottom by soft pipe connection, metering liquid is housed in described gauge line and flexible pipe.
Described fixture comprises the blade retaining member, and described blade retaining member is provided with the blade containing groove, is equiped with the blade that stretches in described blade containing groove on described blade retaining member and locates fastening piece.
Described fixture also comprises the gauge line retaining member, described gauge line retaining member comprises rotating shaft, weight and pipe clamp, described rotating shaft is horizontally disposed with and rotating being installed on the blade retaining member, described weight and pipe clamp are divided into rotating shaft two ends, described gauge line is held in pipe clamp, and the gauge line that described weight orders about in pipe clamp by rotating shaft keeps vertical.
The end that described rotating shaft is connected with weight is installed with radially swing arm, and described weight is articulated in radially swing arm.
The end that described rotating shaft is connected with pipe clamp is provided with the pipe clamp position adjustment hole, and described pipe clamp is provided with the position regulating lever, and described position regulating lever is inserted in the pipe clamp position adjustment hole, and described rotating shaft also is provided with the lock screw to described position regulating lever location.
Compared with prior art, the utility model has the advantage of:
Measuring device for the hydraulic turbine blades adjustment of the present utility model, simple in structure, easy to operate, can realize at the water turbine Overhaul site, hydraulic turbine blades accurately being measured, can satisfy the measurement requirement that hydraulic turbine blades is adjusted, between blade, the difference of actual rotational angle provides technical support in order to dwindle.
Description of drawings
Fig. 1 is the flow chart that hydraulic turbine blades is adjusted method of measurement.
Fig. 2 is the plan structure schematic diagram of hydraulic turbine blades.
Fig. 3 is the cutaway view Amplified image that in Fig. 2, blade is measured section C-C place.
Fig. 4 is the main TV structure schematic diagram of hydraulic turbine blades measuring device of the present utility model.
Fig. 5 is that the E of Fig. 4 is to partial enlarged drawing.
Fig. 6 is that the F of Fig. 4 is to partial enlarged drawing.
Fig. 7 is the structural representation of hydraulic turbine blades measuring device of the present utility model under measuring state.
In figure, each label represents:
1, gauge line; 2, fixture; 3, flexible pipe; 21, blade retaining member; 22, blade containing groove; 23, blade location fastening piece; 24, rotating shaft; 25, weight; 26, pipe clamp; 27, radially swing arm; 28, pipe clamp position adjustment hole; 29, position regulating lever; 30, lock screw.
Embodiment
Fig. 4 to Fig. 7 shows a kind of measuring device for the hydraulic turbine blades adjustment of the present utility model, this measuring device comprises flexible pipe 3, gauge line 1 and is connected for connecting the fixture 2 of gauge line 1 with blade, gauge line 1 of rotating installing on each blade fixture 2, two gauge lines 1 vertically arrange and the bottom is communicated with by flexible pipe 3, and metering liquid is housed in gauge line 1 and flexible pipe 3.During use, first a pair of fixture 2 is located in respectively blade water inlet limit and the blade outlet edge of tested blade, and two gauge lines 1 are aimed at respectively with the measuring point of mark, the data that read two gauge lines 1 can be calculated the depth displacement of two measuring points, be blade for corner to the length of side, the horizontal equivalent of measuring two gauge lines 1 can obtain the horizontal equivalent of two measuring points, and namely blade is long for the adjacent side of corner.This blade measuring device, simple in structure, easy to operate, can satisfy the measurement requirement that hydraulic turbine blades is adjusted, between blade, the difference of actual rotational angle provides technical support in order to dwindle.
In the present embodiment, fixture 2 comprises blade retaining member 21, and blade retaining member 21 is provided with the flute profile of the blade containing groove 22 of 22, two fixtures 2 of blade containing groove and makes according to the shape of blade water inlet limit and blade outlet edge respectively, makes fixture 2 more stable with being connected of blade; Be equiped with the blade location fastening piece 23 that stretches in blade containing groove 22 on blade retaining member 21, blade location fastening piece 23 generally is made as three, with tightening each blade location fastening piece 23 after blade containing groove 22 and blade socket, fixture 2 is fixedly connected with blade.
In the present embodiment, fixture 2 also comprises the gauge line retaining member, the gauge line retaining member comprises rotating shaft 24, weight 25 and pipe clamp 26, rotating shaft 24 is horizontally disposed with and rotating being installed on blade retaining member 21, weight 25 and pipe clamp 26 are divided into rotating shaft 24 two ends, gauge line 1 is held in pipe clamp 26, the end that rotating shaft 24 is connected with weight 25 is installed with radially swing arm 27, weight 25 is articulated in radially swing arm 27, the gauge line 1 that weight 25 orders about in pipe clamp 26 by rotating shaft 24 keeps vertical, the measurement that can guarantee like this depth displacement is accurate, provides convenience for measuring operation.
In the present embodiment, the end that rotating shaft 24 is connected with pipe clamp 26 is provided with pipe clamp position adjustment hole 28, pipe clamp 26 is provided with position regulating lever 29, position regulating lever 29 is inserted in pipe clamp position adjustment hole 28, rotating shaft 24 also is provided with the lock screw 30 to position regulating lever 29 location, unclamps the distance that lock screw 30 can be adjusted gauge line 1 and measuring point, makes gauge line 1 as far as possible near fixing with lock screw 30 again after measuring point, it is easy to operate, and reading is also more accurate.
When measuring blade measuring point depth displacement with the measuring device of the present embodiment, carry out according to the following steps:
A) two gauge lines 1 are drawn close, the zero reference alignment of two gauge lines 1, relatively zero reference and the intraluminal fluid face of two gauge lines 1, require the intraluminal fluid face to align with the zero reference of gauge line 1;
B) at the other mounting fixture 2 of the measuring point of tested blade, movable metering pipe 1 makes gauge line 1 as far as possible near measuring point, and makes the zero reference horizontal alighnment measuring point of gauge line 1, then fixing gauge line 1;
C) read respectively the zero reference of two gauge lines 1 and difference y1, the y2 of intraluminal fluid face position, depth displacement is y1-y2, for convenience of calculation, also can count | y1|+|y2|.
When measuring two blade measuring point horizontal equivalents with the measuring device of the present embodiment, after two gauge lines 1 can being close to measuring point, the horizontal equivalent both take the inboard tube wall between two gauge lines 1 as reference measurement, also can measure the horizontal equivalent of weight 25 cusps on two fixtures 2, deduct again the diameter of a gauge line 1 with the result that records, can obtain two blade measuring point horizontal equivalents.
Measuring device for the hydraulic turbine blades adjustment of the present utility model can be used for following hydraulic turbine blades and adjust method of measurement, and the blade of water turbine is measured for corner.
A kind of hydraulic turbine blades is adjusted method of measurement, and as shown in Figure 2, this water turbine has five blades, is designated as respectively the 1-5 blade, the method basic procedure as shown in Figure 1, it specifically comprises the following steps:
1) mark measuring point on each blade: selected blade is measured section, blade water inlet limit and blade outlet edge at this measurement section perform respectively the measuring point mark, the 1-5 blade is carried out the measuring point mark one by one, require the measurement cross section place of each blade identical, the measuring point mark position is identical;
As shown in Figures 2 and 3, the present embodiment adopts following standard when selected blade is measured section and mark measuring point on the 1-5 blade: take the blade section at distance blade inner edge L length place as measuring section, during the mark measuring point take the blade inner edge as benchmark, the hydraulic turbine radially measures length L and is labeled as into water limit measuring point A to blade outer rim direction at blade water inlet edge, at the blade outlet edge, along the hydraulic turbine, radially to blade outer rim direction, measure length L and be labeled as outlet edge measuring point B, into and out of the close blade outer rim of the point position of waterside
In the present embodiment, rotary wheel of water turbine diameter L1=5460mm, water turbine hub diameter L2=2240mm, L '=200mm, as calculated, L=1410mm.
2) measure the blade of each blade of calculating for corner
Take the line of each blade two measuring points and cross angle between the horizontal line of a measuring point as blade for corner
Forms right-angled triangle by the line of two measuring points, the vertical line crossing the horizontal line of a measuring point and cross another measuring point, measures any two length of sides of described right-angled triangle, with the described blade of inverse trigonometrical function calculating for corner
Size;
The long S of hypotenuse of the present embodiment measurement right-angled triangle and blade are for corner
To length of side h, hypotenuse length is the crow flight distance of two measuring points, can directly measure, be the depth displacement of two measuring points to the length of side, can adopt the depth displacement measuring tool to measure, then calculate blade for corner with following formula
Size,
1-5 blade the length of side is counted respectively: h
1, h
2, h
3, h
4, h
5
Hypotenuse is long to be counted respectively: S
1, S
2, S
3, S
4, S
5
Blade is counted respectively for corner:
Measured data and the calculated data of the present embodiment see Table 1.
Table 1: hydraulic turbine blades is for the outer corner measurement computational chart, length unit (mm); Angular unit (°)
In other embodiments, also can according to the difference of point position, select the length of side that more easily guarantees measurement accuracy is measured.For example, when being not easy to directly measure two measuring point crow flight distance, but horizontal equivalent and the depth displacement of State selective measurements two measuring points, namely blade is for corner
The long M of adjacent side and to length of side h,
3) set blade for corner
The adjustment aim value
Calculate each blade for corner
With the adjustment aim value
Difference
The present embodiment take blade that the normal water wheel unit actual measurement in the operation of same hydroelectric power plant is obtained for the corner value as the adjustment aim value
The model of this water wheels unit is identical with measured adjustment unit, and after can guaranteeing like this blade of water turbine is adjusted, its ability to work and normal water wheel unit are more approaching; Certainly, there is no normal water wheel unit when measuring, can be also the adjustment aim value for the mean value of corner with all blades
The blade of 1-5 blade is for corner and adjustment aim value
Difference count respectively:
4) corner that calculates each blade is adjusted pad correction value Δ δ: first calculate conversion coefficient k,
Each blade is installed respectively additional the corner adjustment pad that thickness is δ, then record the blade of this blade after installing the adjustment pad of δ thickness additional for corner
Conversion coefficient
Conversion coefficient k with each blade is multiplied by blade for the difference of corner again
Calculate the corner of each blade and adjust pad correction value Δ δ, namely
The corner of 1-5 blade is adjusted the pad correction value and is counted respectively:
5) calculate new spacer thickness D: first measure the thickness d of the former pad of each blade, then according to the correction value Δ δ that adjusts pad, to its correction, i.e. new spacer thickness D=d+ Δ δ;
The former spacer thickness of 1-5 blade is counted respectively: d
1, d
2, d
3, d
4, d
5
New spacer thickness D counts respectively:
D
1=d
1＋Δδ
1
D
2=d
2＋Δδ
2
D
3=d
3＋Δδ
3
D
4=d
4＋Δδ
5
D
5=d
5＋Δδ
5
6) for ease of processing, the new spacer thickness data rounding that step 5) is obtained, and according to the numerical value processing and fabricating pad after rounding, then replace original old pad with the new adjustment pad of making.
The present embodiment is adjusted to the complete shut-down position with each blade when carrying out step 1), convenient operation carries out the measuring point mark like this, and guarantees that more easily the measuring point mark position is accurate; Carry out step 2) time, each blade is adjusted to fully open position, the blade corner that hydraulic turbine blades is under the standard-sized sheet working state is measured and adjusted, when the water wheels unit was moved under low water head, stability and working efficiency were optimized.
In Fig. 3, angle α is the actual rotational angle of blade, is difficult to diagonal angle α and measures accurately in practical operation.Hydraulic turbine blades of the present utility model is adjusted method of measurement, blade water inlet limit and blade outlet edge at each blade of water turbine mark measuring point, take the line of two measuring points and cross angle between the horizontal line of a measuring point as blade for corner, its size be measured and be calculated to this blade can at the water power plant Overhaul site for corner, and the blade of each blade for the difference between corner can the true corner of each blade of actual response difference.Therefore, as the basis, hydraulic turbine blades is adjusted for corner take the measured blade of the utility model, dwindled between blade blade and for the difference of corner, can realize dwindling the difference of actual rotational angle between blade.
Although the utility model discloses as above with preferred embodiment, yet is not to limit the utility model.Any those of ordinary skill in the art, in the situation that do not break away from the technical solutions of the utility model scope, all can utilize the technology contents of above-mentioned announcement to make many possible changes and modification to technical solutions of the utility model, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solutions of the utility model, all should drop in the scope of technical solutions of the utility model protection any simple modification made for any of the above embodiments, equivalent variations and modification according to the utility model technical spirit.
Claims (5)
1. one kind is used for the measuring device that hydraulic turbine blades is adjusted, it is characterized in that: comprise flexible pipe (3), gauge line (1) and be connected for connecting the fixture (2) of gauge line (1) with described blade, the upper gauge line of rotating installing (1) of each blade fixture (2), two gauge lines (1) vertically arrange and the bottom is communicated with by flexible pipe (3), and metering liquid is housed in described gauge line (1) and flexible pipe (3).
2. the measuring device of adjusting for hydraulic turbine blades according to claim 1, it is characterized in that: described fixture (2) comprises blade retaining member (21), described blade retaining member (21) is provided with blade containing groove (22), is equiped with the blade that stretches in described blade containing groove (22) on described blade retaining member (21) and locates fastening piece (23).
3. the measuring device of adjusting for hydraulic turbine blades according to claim 2, it is characterized in that: described fixture (2) also comprises the gauge line retaining member, described gauge line retaining member comprises rotating shaft (24), weight (25) and pipe clamp (26), described rotating shaft (24) is horizontally disposed with and rotating being installed on blade retaining member (21), described weight (25) and pipe clamp (26) are divided into rotating shaft (24) two ends, described gauge line (1) is held in pipe clamp (26), the gauge line (1) that described weight (25) orders about in pipe clamp (26) by rotating shaft (24) keeps vertical.
4. the measuring device of adjusting for hydraulic turbine blades according to claim 3, it is characterized in that: the end that described rotating shaft (24) is connected with weight (25) is installed with radially swing arm (27), and described weight (25) is articulated in radially swing arm (27).
5. according to claim 3 or 4 described measuring devices of adjusting for hydraulic turbine blades, it is characterized in that: the end that described rotating shaft (24) is connected with pipe clamp (26) is provided with pipe clamp position adjustment hole (28), described pipe clamp (26) is provided with position regulating lever (29), described position regulating lever (29) is inserted in pipe clamp position adjustment hole (28), and described rotating shaft (24) also is provided with the lock screw (30) to described position regulating lever (29) location.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207243937U CN202971019U (en) | 2012-12-25 | 2012-12-25 | Measuring device for adjusting water turbine paddle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207243937U CN202971019U (en) | 2012-12-25 | 2012-12-25 | Measuring device for adjusting water turbine paddle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202971019U true CN202971019U (en) | 2013-06-05 |
Family
ID=48512104
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207243937U Expired - Fee Related CN202971019U (en) | 2012-12-25 | 2012-12-25 | Measuring device for adjusting water turbine paddle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202971019U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016237A (en) * | 2012-12-25 | 2013-04-03 | 长沙理工大学 | Water turbine peddle adjustment and measurement method and peddle measurement device for method |
| CN107966128A (en) * | 2017-12-03 | 2018-04-27 | 中国直升机设计研究所 | A kind of unmanned plane composite material blade torsional angle detection device |
-
2012
- 2012-12-25 CN CN2012207243937U patent/CN202971019U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016237A (en) * | 2012-12-25 | 2013-04-03 | 长沙理工大学 | Water turbine peddle adjustment and measurement method and peddle measurement device for method |
| CN107966128A (en) * | 2017-12-03 | 2018-04-27 | 中国直升机设计研究所 | A kind of unmanned plane composite material blade torsional angle detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151225 |
|
| EXPY | Termination of patent right or utility model |