CN102878911B - Folium equivalent weight measuring device - Google Patents
Folium equivalent weight measuring device Download PDFInfo
- Publication number
- CN102878911B CN102878911B CN201210421650.4A CN201210421650A CN102878911B CN 102878911 B CN102878911 B CN 102878911B CN 201210421650 A CN201210421650 A CN 201210421650A CN 102878911 B CN102878911 B CN 102878911B
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- blade
- moving
- fixed
- measuring
- equivalent weight
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- 238000000034 method Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000000691 measurement method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention provides a folium equivalent weight measuring device which comprises a bottom board, a fixing device which is fixed on the bottom board, a shifting unit which is installed on the bottom board, is movable and is arranged opposite to the fixing device and a support which is fixedly arranged between the fixing device and the shifting unit and is used for installing a folium; the fixing device comprises a fixed measuring board which is fixedly installed on the bottom plate and two fixed dial indicators which are fixedly arranged on the fixed measuring board, wherein the tips of the two fixed dial indicators prop against a first end face of the folium; and the shifting unit comprises a movable measuring board which can be movably installed on the bottom board and two movable dial indicators which can be fixedly installed on the movable measuring board, wherein the tips of the two movable dial indicators prop against a second end face of the folium. Additionally, the invention further provides a method for measuring the folium equivalent weight. The method comprises the folium equivalent weight measuring device and comprises the following steps: step 1, setting the dial indicators to zero; step 2, clamping the folium to be measured; and step 3, reading and judging whether the equivalent weight folium is qualified or not.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to a blade equivalent weight measuring device. In addition, the invention also relates to a measuring method comprising the blade equivalent weight measuring device.
Background
The blade equivalent refers to the deviation between a measured value and a theoretical value of two end surfaces of a designated position of a middle blade body of a first-stage working blade to be processed, and specifically refers to a torsion value between the blade body and positioning surfaces for mounting a blade tenon and a tail part, so as to ensure that an angle between the blade body and the positioning surfaces for mounting the blade is within a design allowable range. At present, the equivalent weight of the blade is detected to be qualified, inductive measurement is mainly adopted, and the cost is quite high through computer reading.
Disclosure of Invention
The invention aims to provide a blade equivalent weight measuring device and a measuring method thereof, and aims to solve the technical problems that the conventional method for detecting blade equivalent weight adopts inductance measurement and is high in price.
In order to achieve the above object, according to one aspect of the present invention, there is provided a blade equivalent weight measuring device, where the blade includes a blade back and a blade basin, and a positioning point is further provided on the blade, the blade equivalent weight measuring device includes: the blade mounting device comprises a base plate, a fixing device fixedly arranged on the base plate, a moving device which is arranged on the base plate in a movable manner and is opposite to the fixing device, and a support which is fixedly arranged between the fixing device and the moving device and is used for mounting a blade; the fixing device comprises a fixed measuring table fixedly arranged on the bottom plate and two fixed dial indicators fixedly arranged on the fixed measuring table, wherein the tips of the two fixed dial indicators abut against the first end surfaces of the blades; the moving device comprises a moving measuring platform movably arranged on the bottom plate and two moving dial indicators fixedly arranged on the moving measuring platform, and the tips of the two moving dial indicators abut against the second end surface of the blade.
Further, the moving device comprises a positioning pin support arranged at the side end of the movable measuring table, and a positioning pin is arranged on the positioning pin support and can be used for pushing against the positioning point of the blade.
Furthermore, a first mounting hole is formed in the fixed measuring table, and a meter tip of the fixed dial indicator is inserted into the first mounting hole; and a second mounting hole is formed in the movable measuring table, and the tip of the movable dial indicator is inserted into the second mounting hole.
Further, the fixing device comprises a first set screw for locking the pointer tip for fixing the dial indicator, and the moving device further comprises a second set screw for locking the pointer tip for moving the dial indicator.
Furthermore, the tip of one fixed dial indicator and the corresponding tip of the movable dial indicator are abutted against the blade back of the blade, and the tip of the other fixed dial indicator and the corresponding tip of the movable dial indicator are abutted against the blade basin of the blade.
Furthermore, the fixing device further comprises a cushion block arranged on the fixed measuring table, the upper end of the cushion block inclines towards the support, the end face, where the support faces the fixing device, of the support is parallel to the inclined face of the cushion block, and a gap for installing the blade is arranged between the support and the cushion block.
Furthermore, a guide rail is arranged on the bottom plate, and the movable measuring table slides on the bottom plate along the guide rail.
According to another aspect of the present invention, there is also provided a blade equivalent measuring method, which includes the above blade equivalent measuring device, and includes the following steps: firstly, zeroing a dial indicator; secondly, clamping the blade to be detected; reading out the readings of the fixed dial indicator and the movable dial indicator respectively, taking the algebraic sum of the reading of any fixed dial indicator and the reading of the movable dial indicator corresponding to the fixed dial indicator as a, and taking the algebraic sum of the reading of the other fixed dial indicator and the reading of the movable dial indicator corresponding to the fixed dial indicator as b; if | a | b | + | b | ≦ 0.08, the equivalent weight of the blade to be measured is qualified; and if the | a | b + | b | is more than 0.08, the equivalent of the blade to be measured is unqualified.
Further, zeroing the dial indicator specifically comprises the following steps: firstly, clamping a standard blade; secondly, aligning the pointers of all the dial indicators to the zero scale mark; and finally, screwing a first set screw for fixing the dial indicator, and screwing a second set screw for moving the dial indicator.
The invention has the following beneficial effects:
the fixed dial indicator of the blade equivalent weight measuring device provided by the invention is abutted against the first end surface of the blade to be measured, and the movable dial indicator is abutted against the corresponding position of the second end surface of the blade to be measured. The measuring method using the blade equivalent weight measuring device judges whether the blade to be measured is qualified or not by comparing the measured difference value of the standard blade and the blade to be measured, and the method is simple and reliable.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of a blade equivalence measuring device according to a preferred embodiment of the present invention; and
FIG. 2 is a flow chart of a blade equivalence measurement method in accordance with a preferred embodiment of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
Referring to fig. 1, a preferred embodiment of the present invention provides a blade equivalent weight measuring device for measuring an equivalent weight of a blade, where the blade includes a blade back and a blade basin, and the blade is further provided with a positioning point for positioning and mounting the blade, including: the blade mounting device comprises a base plate 10, a fixing device 20 fixedly arranged on the base plate 10, a moving device 30 which is movably arranged on the base plate 10 and is arranged opposite to the fixing device 20, and a support 40 which is fixedly arranged between the fixing device 20 and the moving device 30 and is used for mounting a blade; the fixing device 20 comprises a fixed measuring table 21 fixedly mounted on the bottom plate 10 and two fixed dial indicators 22 fixedly mounted on the fixed measuring table 21, wherein the tips of the two fixed dial indicators 22 abut against the first end surfaces of the blades; the moving device 30 comprises a moving measuring table 31 movably mounted on the base plate 10 and two moving dial indicators 32 fixedly mounted on the moving measuring table 31, wherein tips of the two moving dial indicators 32 abut against the second end surface of the blade. The blade equivalent weight measuring device can accurately measure the equivalent weight of the blade, and has the advantages of simple structure, convenience in use and low cost.
The base plate 10 is provided with a guide rail, the fixing device 20 is fixedly installed at one end of the guide rail, the moving device 30 is movably installed at the other end of the guide rail, and the moving measuring table 31 slides along the guide rail.
The fixing device 20 comprises a fixed measuring table 21 fixedly installed on the bottom plate 10 and two transverse fixed dial indicators 22 fixedly installed on the fixed measuring table 21, the two fixed dial indicators 22 are installed side by side, two first installation holes are formed in the fixed measuring table 21, and the tips of the two fixed dial indicators 22 are respectively inserted into the corresponding first installation holes; the gauge head faces the outer end of the whole blade equivalent measuring device, the gauge tips face the middle of the fixing device 20 and the moving device 30, and the gauge tips of the two fixed dial indicators 22 respectively prop against the blade back and the blade basin of the first end surface of the blade. The fixing device 20 is also provided with a first set screw 24 for locking and fixing the tip of the dial indicator 22. The fixing device 20 further includes a pad 23 provided on the fixed measuring table 21, and an upper end of the pad 23 is inclined toward the support 40. The end surface of the support 40 facing the fixing device 20 is parallel to the inclined surface of the cushion block 23, and a gap for installing the blade is reserved between the support 40 and the cushion block 23.
The moving device 30 comprises a moving measuring table 31 movably mounted on the bottom plate 10 and two transverse moving dial indicators 32 fixedly mounted on the moving measuring table 31, the two moving dial indicators 32 are mounted side by side, two second mounting holes are formed in the moving measuring table 31, and the tips of the two moving dial indicators 32 are respectively inserted into the corresponding second mounting holes; the gauge head faces the outer end of the whole blade equivalent measuring device, the gauge tips face the middle of the fixing device 20 and the moving device 30, and the gauge tips of the two movable dial indicators 32 respectively prop against the blade back and the blade basin of the second end face of the blade. It should be noted that the tip of the movable dial indicator 32 is pressed against the corresponding position of the second end face at the position of the first end face against which the tip of any one of the fixed dial indicators 22 is pressed. The moving device 30 is provided with a second set screw 34 for locking the tip of the moving dial indicator 32. The moving device 30 further comprises a positioning pin support 33 installed at the side end of the moving measurement table 31, and a positioning pin is installed on the positioning pin support 33 and can be operated to abut against a positioning point on the blade, so that the blade can be positioned more accurately.
Referring to fig. 2, a preferred embodiment of the present invention provides a measurement method using the blade equivalent measuring device, which specifically includes the following steps:
step S1: zeroing the dial indicator;
and step S11, clamping a standard blade on the blade equivalent weight measuring device, namely, two end faces of the standard blade respectively prop against between the support 40 and the cushion block 23, and the positioning pin props against a positioning point arranged on the standard blade so as to position and clamp the standard blade. The tips of the two fixed dial indicators 22 respectively abut against the blade back and the blade basin of the first end surface of the standard blade, and the tips of the two movable dial indicators 32 respectively abut against the corresponding blade back and the corresponding blade basin of the second end surface of the standard blade.
Step S12, the two fixed dial indicators 22 and the two movable dial indicators 32 are respectively zeroed;
in step S13, the first set screw 24 of the fixed dial indicator 22 and the second set screw 34 of the mobile dial indicator 32 are tightened.
Step S2: clamping a blade to be detected;
and after the step S1 is completed, the standard blade is taken down, and the blade to be measured is clamped in the same manner as the standard blade. The installation position of the blade to be measured is the same as that of the standard blade so as to ensure the accuracy of measurement.
Step S3: reading the readings of all dial indicators and judging whether the equivalent weight of the blade is qualified.
Specifically, reading numbers of the fixed dial indicator 22 and the movable dial indicator 32 are respectively read, the algebraic sum of the reading number of any one fixed dial indicator 22 and the reading number of the corresponding movable dial indicator 32 is taken as a, and the algebraic sum of the reading number of the other fixed dial indicator 22 and the reading number of the corresponding movable dial indicator 32 is taken as b; the algebraic sum of the reading of the fixed dial indicator 22 of the blade back of the first end face of which the tip abuts against the blade and the reading of the movable dial indicator 32 of the blade back of the second end face of which the tip abuts against the blade is a; the algebraic sum of the reading of the fixed dial indicator 22 of the blade basin with the tip abutting against the first end face of the blade and the reading of the movable dial indicator 32 of the blade basin with the tip abutting against the second end face of the blade is b.
If the absolute value a plus absolute value b is less than or equal to 0.08, the equivalent weight of the blade to be measured is qualified; if the absolute value of a plus b is more than 0.08, the equivalent weight of the blade to be measured is unqualified.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the fixed dial indicator of the blade equivalent weight measuring device provided by the invention is abutted against the first end surface of the blade to be measured, and the movable dial indicator is abutted against the corresponding position of the second end surface of the blade to be measured. The measuring method using the blade equivalent weight measuring device judges whether the blade to be measured is qualified or not by comparing the measured difference value of the standard blade and the blade to be measured, and the method is simple and reliable.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a blade equivalent weight measuring device, blade include back of the leaf and leaf basin, still be equipped with the setpoint on the blade, its characterized in that, blade equivalent weight measuring device includes: the blade mounting device comprises a base plate (10), a fixing device (20) fixedly mounted on the base plate (10), a moving device (30) which is mounted on the base plate (10) in a movable mode and is arranged opposite to the fixing device (20), and a support (40) which is fixedly mounted between the fixing device (20) and the moving device (30) and used for mounting the blade; wherein,
the fixing device (20) comprises a fixed measuring table (21) fixedly mounted on the bottom plate (10) and two fixed dial indicators (22) fixedly mounted on the fixed measuring table (21), and tips of the two fixed dial indicators (22) are abutted to the first end face of the blade;
the moving device (30) comprises a moving measuring platform (31) movably mounted on the bottom plate (10) and two moving dial indicators (32) fixedly mounted on the moving measuring platform (31), and tips of the two moving dial indicators (32) are abutted to the second end face of the blade;
the fixing device (20) further comprises a cushion block (23) arranged on the fixed measuring table (21), the upper end of the cushion block (23) inclines towards the support (40), the end face, where the support (40) faces, of the fixing device (20) is located is parallel to the inclined face of the cushion block (23), and a gap for installing the blade is formed between the support (40) and the cushion block (23).
2. Blade equivalence measuring device according to claim 1, wherein the moving device (30) comprises a positioning pin support (33) mounted at a side end of the moving measuring table (31), the positioning pin support (33) having a positioning pin mounted thereon, the positioning pin being operable to abut against a positioning point of the blade.
3. The blade equivalent weight measuring device according to claim 2, characterized in that a first mounting hole is arranged on the fixed measuring table (21), and the tip of the fixed dial indicator (22) is inserted into the first mounting hole; and a second mounting hole is formed in the movable measuring table (31), and the tip of the movable dial indicator (32) is inserted into the second mounting hole.
4. A blade equivalence measuring device according to claim 3, wherein the fixing means (20) comprises a first set screw (24) locking the tip of the fixed dial indicator (22), and the moving means further comprises a second set screw (34) locking the tip of the moving dial indicator (32).
5. Blade equivalence measuring device according to claim 1, characterized in that the tip of one of the fixed percentage tables (22) and the corresponding tip of the moving percentage table (32) are against the blade back of the blade, and the tip of the other fixed percentage table (22) and the corresponding tip of the moving percentage table (32) are against the blade bowl of the blade.
6. Blade equivalent weight measuring device according to claim 1, characterized in that the base plate (10) is provided with guide rails along which the mobile measuring station (31) slides on the base plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421650.4A CN102878911B (en) | 2012-10-29 | 2012-10-29 | Folium equivalent weight measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421650.4A CN102878911B (en) | 2012-10-29 | 2012-10-29 | Folium equivalent weight measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102878911A CN102878911A (en) | 2013-01-16 |
| CN102878911B true CN102878911B (en) | 2015-02-11 |
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ID=47480335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210421650.4A Expired - Fee Related CN102878911B (en) | 2012-10-29 | 2012-10-29 | Folium equivalent weight measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102878911B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162588B (en) * | 2013-02-25 | 2015-06-17 | 哈尔滨汽轮机厂有限责任公司 | Steam turbine blade blank detection device with pouring square box |
| CN105444647B (en) * | 2015-12-27 | 2019-01-04 | 无锡透平叶片有限公司 | The device measured for turbine blade shroud and boss pitch |
| CN107283002A (en) * | 2017-08-15 | 2017-10-24 | 四川建安工业有限责任公司 | Bore hypoid gear mill teeth positioning measurer and mill teeth method |
| CN108981525A (en) * | 2018-05-30 | 2018-12-11 | 中国航发动力股份有限公司 | A kind of measuring system of engine guide vane front and rear edge position |
| CN109357582B (en) * | 2018-11-13 | 2021-02-09 | 株洲航发动科南方燃气轮机有限公司 | Blade equivalent measuring tool and blade equivalent measuring method |
| CN110243253B (en) * | 2019-06-24 | 2021-06-15 | 中国航发动力股份有限公司 | Measuring tool for detecting engine blade |
| CN111678405B (en) * | 2020-04-30 | 2021-11-02 | 中国航发南方工业有限公司 | Blade tenon size and angle measuring device |
| CN112179238A (en) * | 2020-09-29 | 2021-01-05 | 中国航发动力股份有限公司 | Device and method for measuring end face position of blade body of rectifying blade |
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| CN201532169U (en) * | 2009-11-20 | 2010-07-21 | 株洲南方燃气轮机成套制造安装有限公司 | Measuring device for guide vane of gas turbine |
| CN201907047U (en) * | 2010-11-01 | 2011-07-27 | 株洲南方燃气轮机成套制造安装有限公司 | Clamp for turbine blade and grinding machine comprising same |
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| US5265356A (en) * | 1992-10-14 | 1993-11-30 | Winter Kent L | Snowplow and hydraulic system for same |
| US5824897A (en) * | 1996-08-15 | 1998-10-20 | Avion, Inc. | Blade static balancing fixture |
| CN101377305A (en) * | 2007-08-28 | 2009-03-04 | 通用电气公司 | Premixer with radially staged flow passages and method for mixing air and gas in a gas turbine |
| CN201532169U (en) * | 2009-11-20 | 2010-07-21 | 株洲南方燃气轮机成套制造安装有限公司 | Measuring device for guide vane of gas turbine |
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| CN102878911A (en) | 2013-01-16 |
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Granted publication date: 20150211 Termination date: 20211029 |