CN113530740A - Device and method for accurately measuring chord distance of stator positioning rib of hydroelectric generating set - Google Patents
Device and method for accurately measuring chord distance of stator positioning rib of hydroelectric generating set Download PDFInfo
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- CN113530740A CN113530740A CN202110614652.4A CN202110614652A CN113530740A CN 113530740 A CN113530740 A CN 113530740A CN 202110614652 A CN202110614652 A CN 202110614652A CN 113530740 A CN113530740 A CN 113530740A
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- 238000000034 method Methods 0.000 title claims description 19
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 210000003205 muscle Anatomy 0.000 claims 1
- 238000007689 inspection Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Length-Measuring Instruments Using Mechanical Means (AREA)
Abstract
The invention discloses a precise measuring device for the chord distance of a stator positioning rib of a hydroelectric generating set, which comprises a main scale, wherein a measuring scale is arranged on the main scale in a sliding fit manner, a measuring track is fixedly arranged at the back of the measuring scale through a plurality of fixing bolts, and the measuring track is in a sliding fit manner outside the main scale; the front end face of the measuring track is fixedly provided with a graduated scale plate through a plurality of fixing bolts, the measuring track is sleeved on the main scale in a limiting mode, and the graduated scale plate is matched with a scale value line machined on the main scale and displays a measured value. The measuring device improves the measurement precision and efficiency of the chord distance of the positioning rib, and can greatly improve the measurement range of the chord distance of the positioning rib.
Description
Technical Field
The invention belongs to the technical field of measurement of hydraulic generators, and particularly relates to a soft foundation structure for reinforcing a concrete panel rock-fill dam and a construction method.
Background
The precision of the chord distance of the stator positioning rib in the mounting process of the hydroelectric generating set is very high, no special tool for accurately measuring the chord distance of the positioning rib exists at present, the existing measuring method adopts a chord distance sample plate with a single standard numerical value for comparison, and whether the chord distance of the positioning rib is consistent with the chord distance sample plate or not is checked. The prior art has the following defects: in the measuring process, due to the fact that personal strength and hand feeling differences exist, a large error exists, and whether the error is consistent with the standard numerical value of the chord distance inspection sample plate or not cannot be accurately judged; whether the chord distance of the current positioning rib is close to the standard numerical value of the chord distance inspection sample plate or not can only be checked, whether the chord distance is larger or smaller than the standard numerical value can only be judged, the specific deviation of the chord distance numerical value of the positioning rib cannot be accurately measured, and the specific numerical value of the chord distance of the positioning rib cannot be measured; in the measuring process, the optimal measuring point can be accurately found by repeated measurement, the measuring efficiency is low, and time and labor are wasted.
Taking the chord distance inspection of 150MW units of the Guzhou dam power station as an example, one unit has 132 positioning ribs, and every 2 positioning ribs need to measure the chord distance of 4 sections, so that 528 groups of positioning rib chord distance numerical values are obtained. In the prior art, a chord distance inspection sample plate with a single standard numerical value is adopted for comparison, whether the chord distance numerical value is larger or smaller can be simply judged according to a comparison result, but specific deviation numerical values have no quantitative data, so that the conventional chord distance measurement technology can only be used for comparison reference and has no practical accurate adjustment guiding significance.
Disclosure of Invention
The invention aims to provide a device and a method for accurately measuring the chord distance of a stator positioning rib of a hydroelectric generating set, the measuring device improves the measurement accuracy and efficiency of the chord distance of the positioning rib, and can greatly improve the measurement range of the chord distance of the positioning rib.
In order to achieve the technical features, the invention is realized as follows: the accurate measuring device for the chord distance of the stator positioning ribs of the hydroelectric generating set comprises a main scale, wherein a measuring scale is arranged on the main scale in a sliding fit manner, a measuring track is fixedly arranged on the back of the measuring scale through a plurality of fixing bolts, and the measuring track is in a sliding fit manner outside the main scale; the front end face of the measuring track is fixedly provided with a graduated scale plate through a plurality of fixing bolts, the measuring track is sleeved on the main scale in a limiting mode, and the graduated scale plate is matched with a scale value line machined on the main scale and displays a measured value.
One end of the main ruler is provided with a first end plate, a first measuring hook head is processed on the inner side wall of the top end of the first end plate, a front groove is processed on the front end face of the main ruler, a first sliding groove is processed on the back end face of the main ruler, and the first sliding groove is matched with the measuring ruler and can be guaranteed to slide in the first sliding groove; the scale value lines are arranged inside the front groove.
A second sliding groove is processed in the middle of the measuring track, the second sliding groove is in sliding fit with the main scale, a plurality of first bolt holes are processed at the positions of the second sliding groove, bolts penetrate through the first bolt holes and are fixedly connected with the measuring scale, second bolt holes are processed in four vertex angle positions of the front face of the measuring track, the second bolt holes are matched with the fixing bolts, and the scale plate is fixed on the front face of the measuring track; and a third bolt hole is processed at the bottom end of the second sliding groove.
And a locking bolt is arranged on the third bolt hole in a matched manner, the measuring track is fixed on the main scale, and a manual push block is fixed at the bottom end of the measuring track.
The measuring scale comprises a main sliding plate, the main sliding plate and a first sliding groove of the main scale form sliding fit, a second end plate is arranged at the end of the main sliding plate, and a second measuring hook head is machined on one side of the top end of the second end plate; and a plurality of fourth bolt holes are processed on the main sliding plate, and the fourth bolt holes are matched with the first bolt holes of the measuring track and are fixedly connected through bolts.
An observation window is processed in the center of the scale plate, and fifth bolt holes are processed in four corners of the scale plate and matched with second bolt holes in four corners of the top of the measuring track through bolts; the lower side edge of the observation window is provided with a graduated scale, and the graduated scale is matched with the scale value lines on the main scale and displays scales.
The locking bolt comprises a screwing stud which is fixed at the top end of the screwing handle, and the screwing stud is matched with a third bolt hole of the measuring track.
The method for measuring the chord distance of the positioning ribs of the stator of the hydroelectric generating set by the accurate measuring device comprises the following steps:
the method comprises the following steps: after all parts are assembled, aligning the 0 scale mark of the main scale with the 0 scale mark of the graduated scale, and recording the reading L1 in the initial state;
step two: a first measuring hook head of the main ruler is in contact with an included angle of the outer contour of the positioning rib on one side, the measuring track slides to the positioning rib on the other side, and a second measuring hook head of the measuring ruler is in contact with an included angle of the outer contour of the positioning rib on the other side;
step three: fastening a locking bolt to lock the measuring track, and reading the numerical value D of the graduated scale in the state;
step four: the chord length value L2 of the positioning rib is the sum of the chord length value L1 and the scale value D in the initial state, i.e., L2= L1+ D.
In the third step, the reading process of the value D is as follows: the scale mark 0 of the main scale is aligned with the scale mark 0 of the graduated scale in an initial state, the total length of the graduated scale is 49mm according to the scale of the main scale, 50 small lattices are provided correspondingly to the graduated scale, the numerical value of each small lattice of the graduated scale is 0.98mm, the numerical value of each small lattice of the main scale is 1mm, and each small lattice of the main scale is 0.02mm larger than the numerical value of each small lattice of the graduated scale; when the Nth cell of the graduated scale is aligned with the graduation line of the main scale, the decimal reading on the graduated scale is Nx 0.02 mm; the scale value D reads the integer value portion of the main scale plus the decimal value portion of the scale.
The invention has the following beneficial effects:
1. the invention can completely replace the existing measurement and inspection technology, can realize the quantitative measurement of the chord distance of the positioning rib, and has practical guiding significance for the adjustment of the chord distance of the positioning rib on site.
2. The measurement precision of the chord distance of the positioning rib can reach 0.02mm, and the accurate measurement of the chord distance of the positioning rib can be realized.
3. The included angle of the main scale and the measuring scale is matched according to the overall dimension of the positioning rib, the measurement can be successful at one time, and the measurement efficiency of the chord distance of the positioning rib can be improved by more than 2 times.
4. The measuring range of the invention far exceeds the requirement of measuring deviation of the chord distance of the positioning rib, and the invention can be universally used for measuring the positioning ribs of different types.
5. The method is simple and convenient to operate, can monitor in real time in the process of adjusting the chord distance of the positioning rib, and accurately realizes the adjustment of the chord distance of the positioning rib.
6. Negative scale marks can be added, so that negative deviation from the initial value of the chord distance of the positioning rib can be rapidly calculated; and secondly, the scale marks can be added to the whole body of the main ruler, so that the measurement range of the chord distance size of the positioning ribs can be greatly enlarged.
Drawings
Fig. 1 is a front view of the overall structure of the present invention.
Fig. 2 is a three-dimensional view of the overall structure of the present invention.
Fig. 3 is an overall exploded view of the present invention.
Figure 4 is a three-dimensional view of the main scale of the present invention.
Fig. 5 is a three-dimensional view of a survey trajectory of the present invention.
Fig. 6 is a three-dimensional view of a measuring ruler according to the invention.
Fig. 7 is a three-dimensional view of the dial plate of the present invention.
Fig. 8 is a three-dimensional view of a lockbolt of the present invention.
In the figure: the scale comprises a main scale 1, a manual push block 2, a scale plate 3, a fixing bolt 4, a measuring scale 5, a locking bolt 6, a scale interval line 7 and a measuring track 8;
a first end plate 101, a first measuring hook head 102, a front groove 103, a first sliding groove 104;
a fifth bolt hole 301, an observation window 302 and a graduated scale 303;
a main sliding plate 501, a fourth bolt hole 502, a second end plate 503 and a second measuring hook head 504;
a screwing handle 601 and a screwing stud 602;
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
as shown in fig. 1-8, the accurate measuring device for the chord distance of the stator positioning rib of the hydroelectric generating set comprises a main ruler 1, wherein a measuring scale 5 is installed on the main ruler 1 through sliding fit, a measuring track 8 is fixedly installed on the back of the measuring scale 5 through a plurality of fixing bolts, and the measuring track 8 is in sliding fit with the outer part of the main ruler 1; the front end face of the measuring track 8 is fixedly provided with a graduated scale plate 3 through a plurality of fixing bolts 4, the measuring track 8 is sleeved on the main scale 1 in a limiting mode, and the graduated scale plate 3 is matched with a scale value line 7 machined on the main scale 1 and displays a measured value.
Further, one end of the main scale 1 is provided with a first end plate 101, a first measuring hook 102 is machined on the inner side wall of the top end of the first end plate 101, a front groove 103 is machined on the front end face of the main scale 1, a first sliding groove 104 is machined on the back end face of the main scale 1, and the first sliding groove 104 is matched with the measuring scale 5 and can slide in the first sliding groove 104; the scale value lines 7 are arranged inside the front groove 103.
Further, a second chute 802 is processed in the middle of the measuring track 8, the second chute 802 and the main scale 1 form a sliding fit, a plurality of first bolt holes 804 are processed at the positions of the second chute 802, bolts are installed in the first bolt holes 804 in a penetrating manner and fixedly connected with the measuring scale 5, second bolt holes 801 are processed in four vertex angle positions of the front face of the measuring track 8, the second bolt holes 801 are matched with the fixing bolts 4, and the scale plate 3 is fixed on the front face of the measuring track 8; a third bolt hole 803 is machined at the bottom end of the second chute 802.
Further, a locking bolt 6 is fittingly installed on the third bolt hole 803, and a measuring rail 8 is fixed on the main scale 1, and a manual push block 2 is fixed at the bottom end of the measuring rail 8.
Further, the measuring scale 5 comprises a main sliding plate 501, the main sliding plate 501 and the first sliding groove 104 of the main scale 1 form a sliding fit, a second end plate 503 is arranged at an end of the main sliding plate 501, and a second measuring hook 504 is processed at one side of the top end of the second end plate 503; a plurality of fourth bolt holes 502 are machined in the main sliding plate 501, and the fourth bolt holes 502 are matched with the first bolt holes 804 of the measuring track 8 and fixedly connected through bolts.
Furthermore, an observation window 302 is processed in the center of the scale plate 3, fifth bolt holes 301 are processed in four corners of the scale plate 3, and the fifth bolt holes 301 are matched with second bolt holes 801 in four corners of the top of the measuring track 8 through bolts; the lower side edge of the observation window 302 is provided with a graduated scale 303, and the graduated scale 303 is matched with the scale value line 7 on the main scale 1 and displays scales.
Further, the locking bolt 6 comprises a screwing stud 602, the screwing stud 602 is fixed at the top end of the screwing handle 601, and the screwing stud 602 is matched with the third bolt hole 803 of the measuring track 8.
Example 2:
the method for measuring the chord distance of the positioning ribs of the stator of the hydroelectric generating set by the accurate measuring device comprises the following steps:
the method comprises the following steps: after all parts are assembled, aligning the 0 scale mark of the main scale 1 with the 0 scale mark of the graduated scale 303, and recording the reading L1 in the initial state;
step two: the first measuring hook head 102 of the main ruler 1 is in contact with the included angle of the outer contour of the positioning rib at one side, the measuring track 8 slides to the positioning rib at the other side, and the second measuring hook head 504 of the measuring ruler 5 is in contact with the included angle of the outer contour of the positioning rib at the other side;
step three: fastening the locking bolt 6 to lock the measuring track 8, and reading the numerical value D of the graduated scale 303 in the state;
step four: the chord length value L2 of the positioning rib is the sum of the chord length value L1 and the scale value D in the initial state, i.e., L2= L1+ D.
In the third step, the reading process of the value D is as follows: in an initial state, the scale mark 0 of the main scale 1 is aligned with the scale mark 0 of the graduated scale 303, the total length of the graduated scale 303 is 49mm according to the scale of the main scale 1, and the corresponding graduated scales have 50 cells, so that the numerical value of each cell of the graduated scale 303 is 0.98mm, the numerical value of each cell of the main scale 1 is 1mm, and each cell of the main scale 1 is 0.02mm larger than the numerical value of each cell of the graduated scale 303; when the Nth cell of the graduated scale is aligned with the graduation line of the main scale, the decimal reading on the graduated scale is Nx 0.02 mm; the scale value D reads the integer value portion of the main scale plus the decimal value portion of the scale.
Claims (9)
1. Hydroelectric set stator location muscle chord length precision measurement device, its characterized in that: the measuring device comprises a main scale (1), wherein a measuring scale (5) is arranged on the main scale (1) in a sliding fit manner, a measuring track (8) is fixedly arranged on the back of the measuring scale (5) through a plurality of fixing bolts, and the measuring track (8) is in a sliding fit manner outside the main scale (1); the front end face of the measuring track (8) is fixedly provided with a graduated scale plate (3) through a plurality of fixing bolts (4), the measuring track (8) is sleeved on the main scale (1) in a limiting mode, and the graduated scale plate (3) is matched with a scale value line (7) machined on the main scale (1) and displays a measured value.
2. The hydroelectric generating set stator positioning rib chord distance accurate measurement device according to claim 1, characterized in that: one end of the main ruler (1) is provided with a first end plate (101), a first measuring hook head (102) is machined on the inner side wall of the top end of the first end plate (101), a front groove (103) is machined on the front end face of the main ruler (1), a first sliding groove (104) is machined on the back end face of the main ruler (1), and the first sliding groove (104) is matched with the measuring ruler (5) and can slide in the first sliding groove (104); the scale value line (7) is arranged inside the front groove (103).
3. The hydroelectric generating set stator positioning rib chord distance accurate measurement device according to claim 1, characterized in that: a second sliding groove (802) is processed in the middle of the measuring track (8), the second sliding groove (802) and the main scale (1) form sliding fit, a plurality of first bolt holes (804) are processed at the position of the second sliding groove (802), bolts penetrate through the first bolt holes (804) and are fixedly connected with the measuring scale (5), second bolt holes (801) are processed in four vertex angle positions of the front face of the measuring track (8), the second bolt holes (801) are matched with the fixing bolts (4), and the scale plate (3) is fixed on the front face of the measuring track (8); and a third bolt hole (803) is machined at the bottom end of the second sliding chute (802).
4. The hydroelectric generating set stator positioning rib chord distance accurate measurement device according to claim 3, characterized in that: and a locking bolt (6) is installed on the third bolt hole (803) in a matched mode, a measuring track (8) is fixed on the main scale (1), and a manual push block (2) is fixed at the bottom end of the measuring track (8).
5. The hydroelectric generating set stator positioning rib chord distance accurate measurement device according to claim 1, characterized in that: the measuring scale (5) comprises a main sliding plate (501), the main sliding plate (501) is in sliding fit with a first sliding groove (104) of the main scale (1), a second end plate (503) is arranged at the end of the main sliding plate (501), and a second measuring hook head (504) is machined on one side of the top end of the second end plate (503); a plurality of fourth bolt holes (502) are machined in the main sliding plate (501), and the fourth bolt holes (502) are matched with the first bolt holes (804) of the measuring track (8) and fixedly connected through bolts.
6. The hydroelectric generating set stator positioning rib chord distance accurate measurement device according to claim 1, characterized in that: an observation window (302) is machined in the center of the scale plate (3), fifth bolt holes (301) are machined in four corners of the scale plate (3), and the fifth bolt holes (301) are matched with second bolt holes (801) in four corners of the top of the measuring track (8) through bolts; the lower side edge of the observation window (302) is provided with a graduated scale (303), and the graduated scale (303) is matched with a scale value line (7) on the main scale (1) and displays scales.
7. The hydroelectric generating set stator positioning rib chord distance accurate measurement device according to claim 4, characterized in that: the locking bolt (6) comprises a screwing stud (602), the screwing stud (602) is fixed to the top end of the screwing handle (601), and the screwing stud (602) is matched with a third bolt hole (803) of the measuring track (8).
8. The method for measuring the chord distance of the stator positioning rib of the hydroelectric generating set by adopting the accurate measuring device of any one of claims 1 to 7 is characterized by comprising the following steps:
the method comprises the following steps: after all parts are assembled, aligning the 0 scale mark of the main scale (1) with the 0 scale mark of the graduated scale (303), and recording the reading L1 in the initial state;
step two: a first measuring hook head (102) of the main ruler (1) is in contact with an included angle of the outer contour of the positioning rib at one side, a measuring track (8) slides towards the positioning rib at the other side, and a second measuring hook head (504) of the measuring ruler (5) is in contact with an included angle of the outer contour of the positioning rib at the other side;
step three: fastening a locking bolt (6) to lock the measuring track (8), and reading the numerical value D of the graduated scale (303) in the state;
step four: the chord length value L2 of the positioning rib is the sum of the chord length value L1 and the scale value D in the initial state, i.e., L2= L1+ D.
9. The method for measuring the chord distance of the stator positioning rib of the hydroelectric generating set by using the accurate measuring device according to claim 8, wherein in the third step, the reading process of the numerical value D is as follows: in an initial state, the 0 scale mark of the main scale (1) is aligned with the 0 scale mark of the graduated scale (303), the total length of the graduated scale (303) is 49mm according to the graduation of the main scale (1), the corresponding graduated scale has 50 cells, the numerical value of each cell of the graduated scale (303) is 0.98mm, the numerical value of each cell of the main scale (1) is 1mm, and the numerical value of each cell of the main scale (1) is 0.02mm larger than that of each cell of the graduated scale (303); when the Nth cell of the graduated scale is aligned with the graduation line of the main scale, the decimal reading on the graduated scale is Nx 0.02 mm; the scale value D reads the integer value portion of the main scale plus the decimal value portion of the scale.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110614652.4A CN113530740A (en) | 2021-06-02 | 2021-06-02 | Device and method for accurately measuring chord distance of stator positioning rib of hydroelectric generating set |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110614652.4A CN113530740A (en) | 2021-06-02 | 2021-06-02 | Device and method for accurately measuring chord distance of stator positioning rib of hydroelectric generating set |
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| CN209197628U (en) * | 2018-12-17 | 2019-08-02 | 贵州黎阳国际制造有限公司 | A kind of measuring device for measuring with distance between relative relief surface |
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Application publication date: 20211022 |