CN221032777U - Shroud blade assembly control device - Google Patents
Shroud blade assembly control device Download PDFInfo
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- CN221032777U CN221032777U CN202323185708.2U CN202323185708U CN221032777U CN 221032777 U CN221032777 U CN 221032777U CN 202323185708 U CN202323185708 U CN 202323185708U CN 221032777 U CN221032777 U CN 221032777U
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- shroud
- blade
- seat frame
- control device
- assembly control
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- 238000005259 measurement Methods 0.000 claims description 13
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000008439 repair process Effects 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 6
- 230000006978 adaptation Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model relates to the technical field of turbine blade measuring devices, and provides an assembly control device for a shroud blade, wherein the assembly control device comprises a reference fixing device close to a blade root and a shroud measuring device close to a shroud; the datum fixing device comprises a seat frame and a measuring plate hinged with the seat frame; the shroud ring measuring device is connected with the measuring plate by adopting a plurality of sections of connecting rods with universal joints. The utility model can control the assembling parameters of the blade root and the shroud of the turbine blade in a combined way, and disassemble and repair the blade which does not meet the design requirement after being installed.
Description
Technical Field
The utility model relates to the technical field of turbine blade measuring devices, in particular to an assembly control device for shroud blades.
Background
The technical scheme is that the turbine blade with the shroud comprises a blade main body, wherein the blade main body comprises the shroud, a blade body and a blade root which are integrally formed from top to bottom, two sides of the shroud are continuously bent twice, so that two sides of the shroud are Z-shaped, certain blades which are circumferentially arranged adopt a Z-shaped shroud structure, the leakage loss of the turbine during operation can be reduced, the top blade shape of the circumferentially arranged blades is met, the shroud is extruded more tightly under the action of centrifugal force, and the grouping vibration reduction effect of the blades is improved. The problem in prior art is that this kind of blade profile blade height is high, and require interference fit between two adjacent blade shroud contact surfaces, and the shroud contact surface is not on the coplanar from the installation angle observation with the blade root contact surface, leads to the interference measurement degree of difficulty increase of shroud contact surface, and current radial line model is because the blade root contact surface and the shroud contact surface of Z style of calligraphy shroud blade of unable laminating simultaneously of contact surface of measuring plate, and the blade root wheel groove of rotor is the inclined plane with the contact surface of seat frame, makes the unable accurate control of lodging condition of blade, therefore need to develop a device that can control Z style of calligraphy shroud blade assembly.
Disclosure of Invention
The utility model provides a shroud blade assembly control device, which aims to solve the problems that in the prior art, the height of a blade-shaped blade is high, interference fit is required between two adjacent blade shroud contact surfaces, the shroud contact surfaces and blade root contact surfaces are not on the same plane as viewed from an installation angle, so that the interference measurement difficulty of the shroud contact surfaces is increased, the blade root contact surfaces and shroud contact surfaces of Z-shaped shroud blades cannot be simultaneously attached to the contact surfaces of measuring plates, and the contact surfaces of blade root wheel grooves of a rotor and a seat frame are inclined surfaces, so that the lodging condition of the blade cannot be accurately controlled; the datum fixing device comprises a seat frame and a measuring plate hinged with the seat frame; the shroud ring measuring device is connected with the measuring plate by adopting a plurality of sections of connecting rods with universal joints.
Preferably, a pin hole is arranged on one side of the seat frame close to the blade, and an arc-shaped groove is arranged above the pin hole.
Preferably, the main body of the measuring plate is in an inverted trapezoid shape, a fixing pin matched with the pin hole of the seat frame is arranged on the measuring plate, and a positioning pin matched with the arc-shaped groove of the seat frame is arranged on the measuring plate.
Preferably, the measuring plate is provided with a butterfly nut sleeved outside a fixing pin matched with the pin hole of the seat frame, and the measuring plate is provided with a butterfly nut sleeved outside a positioning pin matched with the arc-shaped groove of the seat frame.
Preferably, the shroud measuring device is fixed above the measuring plate by adopting an auxiliary inserting block, a groove matched with the thickness of the measuring plate is formed in the bottom of the auxiliary inserting block, and a fixing hole is formed in the side face of the groove of the auxiliary inserting block. The method is favorable for connecting the reference fixing device where the measuring plate is positioned with the shroud measuring device, so that the assembly parameter control of the blade root and the shroud of the turbine blade is formed, and the blade which does not meet the design requirement after the installation is disassembled and polished.
Preferably, a plurality of sections of connecting rods with universal joints are fixed above the auxiliary inserting blocks, and the universal joints of the connecting rods are provided with compression blocks.
Preferably, the bottom of the seat frame is provided with a plurality of support rods, the support rods are perpendicular to the length direction of the seat frame, and the support rods are provided with fixing holes and are fixed with the seat frame. The support rods can be interchangeably adapted and replaced according to the difference of the heights of two shoulders of the blade root wheel groove of the turbine where the blade root of the turbine blade is located.
The blade root contact surface and the shroud contact surface of the Z-shaped shroud blade cannot be simultaneously bonded by the contact surface of the measuring plate, the contact surface of the blade root wheel groove of the rotor and the contact surface of the seat frame are inclined, so that the lodging condition of the blade cannot be accurately controlled, and the blade root contact surface measuring device has the following beneficial effects that the interchangeable adaptation and replacement can be realized according to the two shoulder height contact surfaces of the blade root wheel groove of the turbine blade; the measuring plate rotates to the front contact surface to be attached to the blade root contact surface of the first standard blade by taking the cylindrical locating pin as an axis, then the gauge head of the dial indicator is adjusted to be perpendicular to the contact surface with the shroud, after the gauge head is stressed, the dial indicator reading is fixed within the interference requirement distance, and each blade can be dragged along the blade root wheel groove to be coupled with the newly-installed blade.
Drawings
FIG. 1 is a schematic view of a shroud vane assembly control apparatus;
FIG. 2 is a front view of a shroud vane assembly control apparatus.
Legend description: a seat frame 1; a front support bar 2; a rear support bar 3; a column head screw 4; a cylindrical positioning pin 5; a cylindrical fixing pin 6; a spacer 7; a wing nut 8; a measuring plate 9; an auxiliary plug 10; a set screw 11; a connecting bolt 12; a dial indicator frame bar 13; an upper gimbal compression block 14; a lower gimbal compression block 15; screwing the nut 16; screwing down the nut 17; an upper gimbal adjustment shaft 18; a lower universal joint adjustment shaft 19; a dial gauge 20; a shroud 21; a rotor 22; blade root groove 23.
Detailed Description
For the purpose of embodiments of the present utility model; the technical scheme and the advantages are more clear, and the technical scheme in the embodiment of the utility model is clear by combining the drawings in the embodiment of the utility model; is fully described.
Example 1
Referring to fig. 1 and 2, the assembly control device for the shroud blade comprises a seat frame 1, a front support rod 2, a rear support rod 3, a column head screw 4, a cylindrical positioning pin 5, a cylindrical fixing pin 6, a gasket 7, a butterfly nut 8, a measuring plate 9, an auxiliary insert block 10, a set screw 11, a connecting bolt 12, a dial indicator frame rod 13, an upper universal joint compressing block 14, a lower universal joint compressing block 15, an upper tightening nut 16, a lower tightening nut 17, an upper universal joint adjusting shaft 18, a lower universal joint adjusting shaft 19, a dial indicator 20, a shroud 21, a rotor 22 and a blade root wheel groove 23.
The seat frame 1 is provided with a pin hole near one side of the blade, and an arc groove is arranged above the pin hole. The main body of the measuring plate 9 is in an inverted trapezoid shape, the measuring plate 9 is provided with a cylindrical positioning pin 6 matched with the pin hole of the seat frame 1, and the measuring plate 9 is provided with a cylindrical positioning pin 5 matched with the arc-shaped groove of the seat frame 1. The measuring plate 9 is provided with a butterfly nut 8 and a gasket 7 sleeved outside the cylindrical locating pin 6 matched with the pin hole of the seat frame 1, and the measuring plate 9 is provided with a butterfly nut 8 and a gasket 7 sleeved outside the cylindrical locating pin 5 matched with the arc-shaped groove of the seat frame 1.
Through above-mentioned setting, the preceding contact surface of measuring board 9 can laminate the blade root part of blade, can realize the adaptation of different grade type measuring board 9 and change according to the blade root of blade and the contact angle difference of measuring board 9, and measuring board 9 uses the fixed pin as the axle, and cooperation arc groove rotates the blade root department to the blade. After the measuring plate 9 rotates in place, the fixing pin is screwed and positioned by adopting the butterfly nut 8, and after the cylindrical locating pin 5 in the arc-shaped groove rotates in place, the fixing pin is screwed and positioned by adopting the butterfly nut 8, so that the relative positions of the measuring plate 9 and the seat frame 1 are fixed.
Referring to fig. 1 and 2, a shroud blade assembly control device is shown, and a shroud measuring device is connected to the measuring plate 9 by using two sections of connecting rods with universal joints. The shroud measuring device is fixed above the measuring plate 9 by adopting an auxiliary inserting block 10, a groove matched with the thickness of the measuring plate 9 is formed in the bottom of the auxiliary inserting block 10, and a fixing hole is formed in the side face of the groove of the auxiliary inserting block 10. Two sections of connecting rods with universal joints are fixed above the auxiliary insert block 10, and the universal joints of the connecting rods are provided with compression blocks. The dial indicator 20 is inserted on the dial indicator 20 frame, the dial indicator 20 frame is sleeved on the connecting rod, the connecting rod is fixed on the auxiliary insert block 10, and the auxiliary insert block 10 is fixed on the measuring plate 9. The dial indicator 20 hack lever 13 is used for adjusting the relative position of the dial indicator 20 and the shroud band, and the relative position of the dial indicator 20 on the seat frame 1 is adjusted through the upper universal joint compressing block 14, the lower universal joint compressing block 15, the upper screwing nut 16, the lower screwing nut 17, the upper universal joint adjusting shaft 18 and the lower universal joint adjusting shaft 19, so that the head of the dial indicator is perpendicular to the contact surface of the shroud band.
Through the arrangement, the reference fixing device where the measuring plate 9 is positioned is connected with the shroud measuring device, so that the combined control of the assembly parameters of the blade root and the shroud of the turbine blade is formed, and the blade which does not meet the design requirements after being installed is disassembled and polished. The dial indicator 20 measures the installation parameters of the top shroud of the turbine blade and the measurement plate 9 measures the installation parameters of the bottom blade root of the turbine blade. The dial indicator 20 and the measuring plate 9 are coupled by adopting a connecting rod with a universal joint, so that the radial deviation value of the newly-installed blade and the standard blade is quickly obtained, whether the blade root of the turbine blade is lodged forwards or backwards and whether the interference fit requirement of the design is met between the adjacent shroud bands is comprehensively based on the radial deviation value, and the turbine blade is disassembled and polished according to the design requirement. In the description of the present application, it should be understood that the azimuth or position relationship indicated by azimuth words such as "front, rear, up and down" is based on the azimuth or position relationship shown in the drawings, and is only for convenience in describing the two universal joints of the connecting rod and the direction of the turbine blade deviating from the radial line in the design according to the rotation direction, and therefore, the protection scope of the present application should not be construed as being limited.
Example 2
An assembly control device for a shroud blade comprises a reference fixing device close to a blade root and a shroud measuring device close to a shroud; the reference fixing device comprises a seat frame 1 and a measuring plate 9 hinged with the seat frame 1, wherein a pin hole is formed in one side, close to a blade, of the seat frame 1, an arc-shaped groove is formed above the pin hole, a fixing pin matched with the pin hole of the seat frame 1 is arranged on the measuring plate 9, a cylindrical locating pin 5 matched with the arc-shaped groove of the seat frame 1 is arranged on the measuring plate 9, a butterfly nut 8 is sleeved outside the fixing pin matched with the pin hole of the seat frame 1, and a butterfly nut 8 is sleeved outside the cylindrical locating pin 5 matched with the arc-shaped groove of the seat frame 1 is arranged on the measuring plate 9; the shroud ring measuring device is connected with the measuring plate 9 by adopting two sections of connecting rods with universal joints, and adopts an upper universal joint compressing block 14, a lower universal joint compressing block 15, an upper screwing nut 16, a lower screwing nut 17, an upper universal joint adjusting shaft 18 and a lower universal joint adjusting shaft 19 to adjust the relative positions of a dial indicator 20 on a seat frame 1, so that the gauge head is vertical to the shroud ring contact surface, the two sections of connecting rods with universal joints are fixed above an auxiliary inserting block 10, and the compressing blocks are arranged at the universal joints of the connecting rods. The dial indicator 20 is inserted on the dial indicator 20 frame, the dial indicator 20 frame is sleeved on the connecting rod, the connecting rod is fixed on the auxiliary insert block 10, and the auxiliary insert block 10 is fixed on the measuring plate 9 by adopting the set screw 11.
The bottom of the seat frame 1 is provided with two supporting rods, each supporting rod comprises a front supporting rod 2 and a rear supporting rod 3, the front supporting rods 2 are close to installed turbine blades, the supporting rods are perpendicular to the length direction of the seat frame 1, fixing holes are formed in the supporting rods, and the fixing holes are fixed with the seat frame 1 through column head screws 4.
Through the arrangement, the supporting rods can be used for realizing interchangeability adaptation and replacement according to the difference of the heights of two shoulders of the blade root wheel groove 23 of the steam turbine where the blade root of the steam turbine blade is located, the dial indicator 20 can be freely adjusted by 360 degrees through two universal joints of the connecting rod, the contact surface of the gauge head vertical shroud 21 of the dial indicator 20 is adjusted, the contact surface of the shroud 21 between adjacent blades is called as a shroud contact surface, the interference measurement of the shroud contact surface of the shroud blade is realized through fixing the auxiliary device and the measuring plate 9 together, and the effect of controlling blade assembly is achieved.
According to the working principle of the utility model, after the standard blades of the steam turbine are installed on the wheel groove of the steam turbine, the seat frame 1 or the supporting rod at the bottom of the seat frame 1 is clamped into the wheel groove. The measuring plate 9 of the utility model is rotated to the blade root of the standard blade by taking the cylindrical locating pin 5 as an axis and is attached to the blade root, then the connecting rod above the auxiliary insert block 10 is adjusted, the connecting rod is rotated to enable the gauge head of the dial indicator 20 to be perpendicular to the shroud contact surface of the turbine blade, after the gauge head is stressed, the reading of the dial indicator 20 is fixed within the interference requirement distance, the nut at the universal joint is screwed, the compression block is fixed, and then each blade can be dragged along the blade root wheel groove 23 to be coupled with the newly-installed blade, so as to obtain the radial deviation value of the newly-installed blade and the standard blade, and the radial deviation value integrates whether the blade root of the turbine blade is forward or backward lodged and whether the designed interference fit requirement between the adjacent shroud 21 is met, and the disassembly and the repair are carried out according to the design requirement.
The utility model solves the problems that in the prior art, the height of the blade profile blade is high, interference fit is required between the contact surfaces of the adjacent two blade shroud bands, the contact surfaces of the shroud bands and the blade root contact surfaces are not on the same plane as viewed from the installation angle, so that the interference measurement difficulty of the shroud band contact surfaces is increased, the blade root contact surfaces of the Z-shaped shroud blades and the shroud band contact surfaces cannot be simultaneously attached to the contact surfaces of the measuring plates 9, and the contact surfaces of the blade root wheel grooves 23 of the rotor 22 and the seat frame 1 are inclined surfaces, so that the lodging condition of the blade cannot be accurately controlled; the measuring plate 9 rotates around the cylindrical locating pin 5 as an axis to enable the front contact surface to be attached to the blade root contact surface of the first standard blade, then the gauge head of the dial indicator 20 is adjusted to be perpendicular to the contact surface with the shroud, after the gauge head is stressed, the reading of the dial indicator 20 is fixed within the interference requirement distance, and after that, each blade is installed, the blade can be dragged along the blade root wheel groove 23 to be coupled with the newly installed blade.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modifications may be made without departing from the spirit and principles of the utility model; equivalent substitutions; modifications, etc., are intended to be included within the scope of the present utility model.
Claims (7)
1. An assembly control device for a shroud blade, wherein the assembly control device comprises a reference fixing device close to a blade root and a shroud measuring device close to a shroud;
The datum fixing device comprises a seat frame and a measuring plate hinged with the seat frame;
The shroud ring measuring device is connected with the measuring plate by adopting a plurality of sections of connecting rods with universal joints.
2. The shroud blade assembly control device of claim 1, wherein the mount has a pin hole on a side thereof adjacent the blade, and an arcuate slot is provided above the pin hole.
3. The shroud blade assembly control device of claim 2, wherein the body of the measurement plate is inverted trapezoidal, the measurement plate is provided with a fixed pin which is matched with the pin hole of the seat frame, and the measurement plate is provided with a positioning pin which is matched with the arc-shaped groove of the seat frame.
4. A shroud blade assembly control device according to claim 3, wherein the measurement plate is provided with a wing nut sleeved with a fixing pin which is engaged with the pin hole of the mount, and the measurement plate is provided with a wing nut sleeved with a locating pin which is engaged with the arc-shaped groove of the mount.
5. The shroud blade assembly control device of claim 1, wherein the shroud measurement device is fixed above the measurement plate by an auxiliary insert, a groove matched with the thickness of the measurement plate is formed in the bottom of the auxiliary insert, and a fixing hole is formed in the side face of the groove of the auxiliary insert.
6. The shroud blade assembly control device of claim 5, wherein the plurality of segments of connecting rods with universal joints are fixed above the auxiliary insert blocks, and compression blocks are arranged at the universal joints of the connecting rods.
7. The shroud blade assembly control device according to claim 1 or 2, wherein a plurality of support rods are arranged at the bottom of the seat frame, the support rods are perpendicular to the length direction of the seat frame, and fixing holes are formed in the support rods and are fixed with the seat frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323185708.2U CN221032777U (en) | 2023-11-24 | 2023-11-24 | Shroud blade assembly control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323185708.2U CN221032777U (en) | 2023-11-24 | 2023-11-24 | Shroud blade assembly control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221032777U true CN221032777U (en) | 2024-05-28 |
Family
ID=91180860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323185708.2U Active CN221032777U (en) | 2023-11-24 | 2023-11-24 | Shroud blade assembly control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221032777U (en) |
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2023
- 2023-11-24 CN CN202323185708.2U patent/CN221032777U/en active Active
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