CN216620871U - Turbine moving blade measuring tool - Google Patents
Turbine moving blade measuring tool Download PDFInfo
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- CN216620871U CN216620871U CN202121931863.2U CN202121931863U CN216620871U CN 216620871 U CN216620871 U CN 216620871U CN 202121931863 U CN202121931863 U CN 202121931863U CN 216620871 U CN216620871 U CN 216620871U
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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
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Abstract
The present invention provides a turbine moving blade measuring tool for measuring the dimension of a root of a turbine moving blade, the turbine moving blade measuring tool including: the positioning block, the jacking block and the micrometer measuring head are arranged on the inner wall of the casing; a sliding groove is formed in the positioning block, and a through hole is formed in the bottom of the sliding groove; a micrometer screw of the micrometer measuring head penetrates through the through hole and extends into the chute, and a fixed sleeve of the micrometer measuring head is connected with the positioning block; the jacking block is positioned in the chute and connected with the micrometer screw; when the blade root of the turbine moving blade slides into the sliding groove from one end of the sliding groove and the micrometric screw moves into the sliding groove to the position where the jacking block is contacted with the blade root, the blade root is clamped between the jacking block and the groove wall of the sliding groove, and the scale of the micrometer measuring head is the distance between the first position and the second position on the blade root along the axial direction of the micrometric screw. The method and the device can improve the efficiency of measuring the size of the blade root of the turbine moving blade.
Description
Technical Field
The application relates to the technical field of gas turbines, in particular to a turbine moving blade measuring tool.
Background
Turbine blades, which are important components of gas turbines, have dovetail-shaped blade roots that are embedded in a turbine shaft to connect the turbine blades to the turbine shaft. For turbine moving blades produced in different batches, there may be a certain difference in the size of the turbine moving blades, the blade root being a part of the turbine moving blades, and there may also be a certain difference in the size of the blade roots of different turbine moving blades. In order to enable the root of the turbine moving blade to be smoothly inserted into the turbine shaft to achieve the connection of the turbine moving blade and the turbine shaft, it is necessary to measure the size of the root of the turbine moving blade to determine whether the size of the root meets the assembly requirement.
At present, three-Coordinate Measuring Machines (CMMs) are commonly used to measure the root dimensions of turbine moving blades.
Since the turbine moving blades are mass-produced and the size of the root of each turbine moving blade needs to be measured, but the size measuring speed of the three-coordinate measuring machine is low, the size of the root of each turbine moving blade needs to be measured by the three-coordinate measuring machine, and a long time is required for measuring the size of the root of each turbine moving blade, so that the efficiency of measuring the size of the root of the turbine moving blade is low.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a turbine moving blade measurement tool that solves the above problems, and that can improve the efficiency of measuring the dimensions of the root of the turbine moving blade.
According to a first aspect of embodiments of the present application, there is provided a turbine moving blade measuring tool for measuring a dimension of a blade root of a turbine moving blade, the turbine moving blade measuring tool including: the positioning block, the jacking block and the micrometer measuring head are arranged on the inner wall of the casing;
a sliding groove is formed in the positioning block, and a through hole is formed in the bottom of the sliding groove;
a micrometer screw of the micrometer measuring head penetrates through the through hole and extends into the sliding groove, and a fixed sleeve of the micrometer measuring head is connected with the positioning block;
the jacking block is positioned in the sliding groove and connected with the micrometer screw;
when the blade root of the turbine moving blade slides into the sliding groove from one end of the sliding groove, and the micrometer screw rod moves into the sliding groove to the position where the jacking block is contacted with the blade root, the blade root is clamped between the jacking block and the groove wall of the sliding groove, the indication number of the micrometer measuring head is the distance between a first position and a second position on the blade root along the axial direction of the micrometer screw rod, the first position is the position on the blade root, which is contacted with the groove wall of the sliding groove, and the second position is the position on the blade root, which is contacted with the jacking block.
In a first possible implementation manner, with reference to the first aspect, the turbine moving blade measurement tool further includes: a standard block;
the standard block is of a columnar structure, and the sectional shape and the sectional dimension of the standard block on the section perpendicular to the axis of the standard block are the same as the standard sectional shape and the standard sectional dimension of the blade root on the section perpendicular to the axis of the blade root;
when the standard block slides into the sliding groove from one end of the sliding groove, the axis of the standard block is parallel to the axis of the sliding groove;
when the standard block slides into the sliding groove from one end of the sliding groove and the micrometer screw rod moves into the sliding groove to the position where the jacking block is contacted with the standard block, the standard block is clamped between the jacking block and the groove wall of the sliding groove, the number of the micrometer measuring head is equal to the standard distance between the first position and the second position along the axial direction of the micrometer screw rod after the blade root slides into the sliding groove.
In a second possible implementation manner, with reference to the first aspect, the sliding groove is a through groove disposed on the positioning block; when the blade root slides into the sliding groove, the blade root slides into the sliding groove from any one of two ends of the sliding groove.
In a third possible implementation manner, with reference to the first aspect, the turbine moving blade measurement tool further includes: a limiting plate;
the sliding groove is a through groove arranged on the positioning block;
the limiting plate is connected with the positioning block and seals the first end of the chute;
when the blade root slides into the sliding groove, the blade root slides into the sliding groove from the second end of the sliding groove, and one end of the blade root is in contact with the limiting plate.
In a fourth possible implementation manner, with reference to the first aspect, in a cross section perpendicular to the sliding groove, at least a part of a cross sectional shape and a cross sectional dimension of the sliding groove are the same as a standard cross sectional shape and a standard cross sectional dimension of the blade root in a cross section perpendicular to an axis of the blade root.
In a fifth possible implementation manner, with reference to the first aspect, the tightening block is a cake-shaped structure, and the diameter of the tightening block is greater than that of the micrometer screw; one end face of the jacking block is connected with the micrometer screw rod, and the axis of the jacking block coincides with the axis of the micrometer screw rod.
In a sixth possible implementation manner, with reference to the first aspect or any possible implementation manner of the first aspect, the fixing sleeve is connected to the positioning block through a buckle, and the tightening block is connected to the micrometer screw through a thread.
According to the technical scheme, the micrometric screw penetrates through the through hole in the bottom of the sliding groove, the fixing sleeve is connected with the positioning block, after the blade root of the turbine moving blade slides into the sliding groove, the micrometric screw is driven to move towards the inside of the sliding groove through the micro cylinder of the micrometer measuring head, and the jacking block moves towards the direction close to the blade root under the driving of the micrometric screw until the jacking block is contacted with the blade root, so that the blade root is clamped between the jacking block and the groove wall of the sliding groove. The purpose of measuring the size of the blade root is to measure the distance between a first position and a second position on the blade root in the target direction, when the blade root is clamped between the jacking block and the groove wall of the sliding groove, the target direction is the same as the axis direction of the micrometer screw, the first position is in contact with the groove wall of the sliding groove, and the second position is in contact with the jacking block. Therefore, after the blade root of the turbine moving blade slides into the sliding groove, the jacking block is driven by the micrometer head to move to contact with the blade root, the required measuring size can be read from the micrometer measuring head, and therefore the size measurement of the blade root can be completed only in a short time, and the efficiency of size measurement of the blade root of the turbine moving blade can be improved.
Drawings
FIG. 1 is a schematic view of a turbine blade measurement tool provided in accordance with an embodiment of the present application;
FIG. 2 is a schematic view of a positioning block according to an embodiment of the present disclosure;
FIG. 3 is a schematic illustration of a root of a turbine moving blade provided in accordance with an embodiment of the present application;
FIG. 4 is a schematic view of a turbine blade measurement tool provided in accordance with an embodiment of the present application;
FIG. 5 is a schematic view of a turbine moving blade measurement tool provided in the fourth embodiment of the present application.
List of reference numerals:
1: and (3) positioning block 2: and (3) a jacking block: micrometer measuring head
4: and standard block 5: limiting plate 11: sliding chute
12: through hole 31: micrometer screw 32: fixing sleeve
A: first position B: second position τ: target direction
100: blade root
Detailed Description
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
As described above, in the process of producing turbine moving blades, after a finished product of the turbine moving blades is machined, it is necessary to measure the dimensions of the turbine moving blades to determine whether the dimensions of the turbine moving blades satisfy the tolerance requirements, and the dimensions of the turbine moving blades need to be measured not only for the blade roots of the turbine moving blades but also for other portions of the turbine moving blades. At present, the dimension of the blade root of the turbine moving blade is detected by a three-coordinate detector, but the speed of the three-coordinate detector for measuring the dimension is low, so that long time is consumed for the continuous measurement of the blade root of each turbine moving blade, the number of the three-coordinate detector is limited, the dimension of other parts of the turbine moving blade is required to be measured by the three-coordinate detector, and the three-coordinate detector cannot be used for measuring the dimension of the blade root constantly. Therefore, the root of the turbine moving blade is measured by the three-coordinate measuring machine, so that the efficiency of measuring the root of the turbine moving blade is low.
In the embodiment of the application, turbine moving blade measuring tool includes the locating piece, tight piece in top and micrometer gauge head, the fixed sleeve of micrometer gauge head is connected with the locating piece, the micrometer screw rod of micrometer gauge head is connected with tight piece in top, after the blade root of turbine moving blade slided in the spout on the locating piece, micrometer screw rod drive tight piece in top of micrometer moved to the direction that is close to the blade root, with the blade root centre gripping between the cell wall of spout and tight piece in top, make blade root and micrometer have fixed relative position, the first position on the blade root contacts with the cell wall of spout this moment, second position on the blade root contacts with tight piece in top, through the zero point position of adjustment micrometer, just can measure the distance between first position and the second position on the blade root through the micrometer. Therefore, the blade root of the turbine moving blade slides into the sliding groove in the positioning block, the size of the blade root can be measured through the micrometer, the size measurement of the blade root can be completed only in a short time, and therefore the efficiency of size measurement of the blade root of the turbine moving blade can be improved.
The turbine moving blade measuring tool provided by the embodiment of the present application will be described in detail below with reference to the accompanying drawings.
Example one
Fig. 1 is a schematic view of a turbine moving blade measuring tool provided in an embodiment of the present application, and fig. 2 is a schematic view of a positioning block provided in an embodiment of the present application, and as shown in fig. 1 and 2, the turbine moving blade measuring tool includes: the device comprises a positioning block 1, a jacking block 2 and a micrometer measuring head 3;
a chute 11 is arranged on the positioning block 1, and a through hole 12 is arranged at the bottom of the chute 11;
a micrometer screw 31 of the micrometer measuring head 3 penetrates through the through hole 12 and extends into the chute 11, and a fixed sleeve 32 of the micrometer measuring head 3 is connected with the positioning block 1;
the jacking block 2 is positioned in the chute 11, and the jacking block 2 is connected with the micrometer screw 31;
when the blade root 100 of the turbine moving blade slides into the sliding groove 11 from one end of the sliding groove 11, and the micrometer screw 31 moves into the sliding groove 11 to the position where the tightening block 2 contacts with the blade root 100, the blade root 100 is clamped between the tightening block 2 and the groove wall of the sliding groove 11, the scale measuring head 3 is indicated by the distance between the first position and the second position on the blade root 100 along the axial direction of the micrometer screw 31, the first position is the position on the blade root 100 contacting with the groove wall of the sliding groove 11, and the second position is the position on the blade root 100 contacting with the tightening block 2.
In the embodiment of the application, the micrometer screw 31 passes through the through hole 12 at the bottom of the sliding chute 11, the fixing sleeve 32 is connected with the positioning block 1, after the blade root 100 of the turbine moving blade slides into the sliding chute 11, the micrometer screw 31 is driven by the micro-cylinder of the micrometer measuring head 3 to move towards the inside of the sliding chute 11, and the puller block 2 moves towards the direction close to the blade root 100 under the driving of the micrometer screw 31 until the puller block 2 contacts with the blade root 100, so as to clamp the blade root 100 between the puller block 2 and the chute wall of the sliding chute 11. The purpose of measuring the size of the blade root 100 is to measure the distance between the first position and the second position on the blade root 100 in the target direction, when the blade root 100 is clamped between the tightening block 2 and the groove wall of the chute 11, the target direction is the same as the axial direction of the micrometer screw 31, the first position is in contact with the groove wall of the chute 11, and the second position is in contact with the tightening block 2, so that the indication number of the micrometer measuring head 3 can be the distance between the first position and the second position on the blade root 100 in the target direction by adjusting the zero position of the micrometer measuring head 3, and the size measurement of the blade root 100 is realized. Therefore, after the blade root 100 of the turbine moving blade slides into the sliding groove 11, the micrometer measuring head 3 drives the jacking block 2 to move to be in contact with the blade root 100, the required measurement size can be read from the micrometer measuring head 3, the size measurement of the blade root 100 can be completed only in a short time, and therefore the efficiency of size measurement of the blade root 100 of the turbine moving blade can be improved.
FIG. 3 is a schematic view of a blade root 100 of a turbine moving blade according to an embodiment of the present application, where as shown in FIG. 3, the direction τ is a target direction, and the blade root 100 is dimensioned to measure a distance L between a first position A and a second position B in the target direction. With reference to fig. 1, when the blade root 100 slides into the sliding slot 11 and the blade root 100 is clamped between the tightening block 2 and the slot wall of the sliding slot 11, the first position a contacts with the slot wall of the sliding slot 11, and the second position B contacts with the tightening block 2, so that by adjusting the zero point position of the micrometer measuring head 3, when the tightening block 2 moves to the third position in the sliding slot 11, the indication of the micrometer measuring head 3 is zero, wherein along the axial direction of the micrometer screw 31, the distance between the third position and the fourth position on the slot wall of the sliding slot 11, which contacts with the first position a, is equal to zero, so that the distance between the first position and the second position on the blade root 100 in the target direction can be measured by the micrometer measuring head 3.
It will be understood that, with reference to the positioning block 1 in fig. 2 and the blade root 100 in fig. 3, the cross-sectional shape and the cross-sectional dimension of the sliding slot 11 in the cross-section perpendicular to the sliding slot 11 match the standard cross-sectional shape and the standard cross-sectional dimension of the blade root 100 in the cross-section perpendicular to the axis of the blade root 100, so as to ensure, on the one hand, that the blade root 100 can slide into the sliding slot 11 and slide in the sliding slot 11, and, on the other hand, that after the blade root 100 has slid into the sliding slot 11, the first position a on the blade root 100 can be brought into contact with the fourth position on the wall of the sliding slot 11, thereby ensuring the accuracy of the dimensional measurement of the blade root of the turbine moving blade.
Example two
FIG. 4 is a schematic view of a turbine moving blade measurement tool provided in the second embodiment of the present application. In addition to the turbine moving blade measuring tool shown in fig. 1, as shown in fig. 4, the turbine moving blade measuring tool further includes: a standard block 4;
the standard block 4 is of a columnar structure, and the sectional shape and the sectional dimension of the standard block 4 on the section perpendicular to the axis of the standard block 4 are the same as those of the blade root 100 on the section perpendicular to the axis of the blade root 100;
when the standard block 4 slides into the sliding groove 11 from one end of the sliding groove 11, the axis of the standard block 4 is parallel to the axis of the sliding groove 11;
when the standard block 4 slides into the sliding groove 11 from one end of the sliding groove 11, and the micrometer screw 31 moves into the sliding groove 11 to a position where the tightening block 2 contacts with the standard block 4, the standard block 4 is clamped between the tightening block 2 and a groove wall of the sliding groove 11, and the indication number of the micrometer measuring head 3 is equal to the standard distance between the first position and the second position of the blade root 100 after sliding into the sliding groove 11 along the axial direction of the micrometer screw 31.
In the exemplary embodiment, the standard block 4 has the same cross-sectional shape and boundary dimensions as the standard cross-sectional shape and standard cross-sectional dimensions of the blade root 100 in a cross-section perpendicular to the respective axes, i.e. the blade root 100 of the turbine rotor blade is of cylindrical construction, whereas the standard block 4 is a section of the blade root 100 having the standard shape and standard dimensions. In order to ensure that the blade root 100 of the turbine moving blade can be smoothly embedded into the turbine shaft, the size of the blade root 100 of the turbine moving blade has higher precision requirement, in order to ensure that the size of the blade root 100 can be accurately measured, the micrometer measuring head 3 is calibrated through the standard block 4, the indication number of the micrometer measuring head 3 can be ensured to accurately indicate the distance between the first position and the second position on the blade root 100 in the target direction, and therefore the accuracy of size measurement of the blade root of the turbine moving blade is ensured.
Before measuring the dimension of the blade root of a batch of turbine moving blades, firstly, the standard block 4 is slid into the chute 11 from one end of the chute 11, then the micrometer screw 31 is driven by the micro-cylinder of the micrometer measuring head 3 to move into the chute 11, so that the micrometer screw 31 drives the puller block 2 to move towards the direction close to the standard block 4 until the puller block 2 is contacted with the standard block 4, and the standard block 4 is clamped between the groove wall of the chute 11 and the puller block 2. At this moment, the scale of the micrometer measuring head 3 should be equal to the standard distance between the first position and the second position on the blade root 100 in the target direction, if the scale of the micrometer measuring head 3 is not equal to the standard distance, the micrometer measuring head 3 is calibrated, the scale of the micrometer measuring head 3 is equal to the standard distance, after the calibration of the micrometer measuring head 3 is completed, the standard block 4 can be slid out from the chute 11, and then the blade root 100 of the turbine moving blade to be measured is slid into the chute 11, so that the dimension of the blade root 100 of the turbine moving blade is measured.
In a possible implementation mode, the standard block 4 can be processed according to a blade root tooth profile median graph of the turbine moving blade, the dimensional precision of the standard block 4 is ensured, the size of the bottom surface (the surface contacted with the jacking block 2) of the standard block 4 is designed according to a theoretical value of +/-0.005 mm, the micrometer measuring head 3 can be accurately calibrated through the standard block 4, and the accuracy of dimensional measurement on the blade root of the turbine moving blade is further ensured.
In one possible embodiment, in the gas turbine, the blade root of the turbine moving blade is inserted into the wheel groove on the wheel shaft, so that the turbine moving blade is connected with the wheel shaft, and therefore the size of the blade root of the turbine moving blade is matched with that of the wheel groove, so that the sliding groove 11 on the positioning block 1 can be machined according to the design drawing of the wheel groove. Specifically, because the blade root of the turbine moving blade is of a dovetail structure, the sliding groove 11 is internally provided with a tooth form matched with the blade root, the tooth form of the sliding groove 11 can be processed by adopting a wheel groove diagram matched with a median diagram of a blade root profile, corresponding correction can be carried out if necessary, the blade root of the turbine moving blade can be ensured to slide into the sliding groove 11, and the first position on the blade root can be contacted with the fourth position on the groove wall of the sliding groove 11, so that the accuracy of size measurement of the blade root of the turbine moving blade is ensured.
EXAMPLE III
As shown in fig. 2, the sliding slot 11 is a through slot disposed on the positioning block 1, and in conjunction with fig. 1, when the blade root 100 slides into the sliding slot 11, the blade root 100 can slide into the sliding slot 11 from either of two ends of the sliding slot 11.
In the embodiment of the present application, the sliding groove 11 is a through groove disposed on the positioning block 1, that is, both ends of the sliding groove 11 are open, when the blade root 100 is subjected to size measurement, the blade root 100 can slide into the sliding groove 11 from any one of the two ends of the sliding groove 11, after the blade root 100 is subjected to size measurement, the blade root 100 can also slide out of the sliding groove 11 from any one of the two ends of the sliding groove 11, so that when the blade root 100 is subjected to size measurement, a user can conveniently slide the blade root 100 into and out of the sliding groove 11, and the use experience of the user during the size measurement of the blade root of the turbine moving blade is improved.
Example four
FIG. 5 is a schematic view of a turbine moving blade measurement tool provided in the fourth embodiment of the present application. In addition to the turbine moving blade measuring tool shown in fig. 1, as shown in fig. 5, the turbine moving blade measuring tool further includes: a limiting plate 5;
the sliding chute 11 is a through groove arranged on the positioning block 1;
the limiting plate 5 is connected with the positioning block 1, and the limiting plate 5 seals the first end of the chute 11;
when the blade root 100 slides into the sliding slot 11, the blade root 100 slides into the sliding slot 11 from the second end of the sliding slot 11, and after the blade root 100 slides into the sliding slot 11, one end of the blade root 100 contacts the limit plate 5.
In the embodiment of the present application, the limiting plate 5 is disposed on the positioning block 1, the limiting plate 5 seals the first end of the sliding slot 11, and when the blade root 100 is measured, the blade root 100 slides into the sliding slot 11 from the second end of the sliding slot 11, so that one end of the blade root 100 contacts with the limiting plate 5. According to the position of the first position on the blade root 100, the length of the sliding groove 11 along the axial direction of the sliding groove is designed, so that when the blade root 100 slides into the sliding groove 11 and one end of the blade root 100 is in contact with the limiting plate 5, the first position on the blade root 100 is in contact with the fourth position on the groove wall of the sliding groove 11, the blade root 100 can be conveniently positioned when the size of the blade root 100 is measured, and the use experience of a user in the process of measuring the size of the blade root of the turbine moving blade is further improved.
It should be understood that, when measuring the size of the blade root 100 of the turbine moving blade, it is generally necessary to measure the sizes of both ends of the blade root 100, when measuring the size of the first end of the blade root 100, slide the first end of the blade root 100 from the second end of the sliding slot 11 into the sliding slot 11, contact the first end of the blade root 100 with the limiting plate 5, slide the blade root 100 out of the sliding slot 11 after measuring the size of the first end of the blade root 100, then slide the second end of the blade root 100 from the second end of the sliding slot 11 into the sliding slot 11, contact the second end of the blade root 100 with the limiting plate 5, and slide the blade root 100 out of the sliding slot 11 after measuring the size of the second end of the blade root 100.
As the blade root of the turbine moving blade is of a columnar structure, in order to detect whether the size of the blade root of the turbine moving blade meets the assembly requirement or not, the sizes of two ends of the blade root are respectively measured along the axial direction of the blade root, namely, the first end of the blade root comprises a first position and a second position, the second end of the blade root also comprises the second position and the second position, the connecting line of the first position of the first end of the blade root and the first position of the second end of the blade root is parallel to the axial line of the blade root, and the connecting line of the second position of the first end of the blade root and the second position of the second end of the blade root is parallel to the axial line of the blade root.
EXAMPLE five
Like the positioning block 1 in fig. 2 and the blade root 100 in fig. 3, the cross-sectional shape and the cross-sectional dimension of the sliding slot 11 in the cross-section perpendicular to the sliding slot 11 are the same as the standard cross-sectional shape and the standard cross-sectional dimension of the blade root 100 in the cross-section perpendicular to the axis of the blade root 100, so that on one hand, the blade root 100 can slide into the sliding slot 11 and slide in the sliding slot 11, and on the other hand, after the blade root 100 slides into the sliding slot 11, the first position a on the blade root 100 can contact with the fourth position on the wall of the sliding slot 11, thereby ensuring the accuracy of the dimension measurement of the blade root of the turbine moving blade.
EXAMPLE six
As shown in fig. 4, the tightening block 2 is a round cake-shaped structure, the diameter of the tightening block 2 is larger than that of the micrometer screw 31, one end face of the tightening block 2 is connected with the micrometer screw 31, and the axis of the tightening block 2 coincides with the axis of the micrometer screw 31.
In the embodiment of the present application, when measuring the dimension of the blade root of the turbine moving blade, the micrometer screw 31 drives the tightening block 2 to move in the direction close to the blade root 100 until the tightening block 2 contacts the blade root 100, and the blade root 100 is clamped between the tightening block 2 and the slot wall of the sliding slot 11. The axis of the jacking block 2 coincides with the axis of the micrometer screw 31, so that the micrometer screw 31 can apply force to the jacking block 2 in a balanced manner, the jacking block 2 can be ensured to be in good contact with the blade root 100, the second position on the blade root 100 is contacted with the jacking block 2, the first position on the blade root 100 is contacted with the fourth position on the wall of the chute 11, and the accuracy of size measurement of the blade root 100 is ensured.
The diameter of the jacking block 2 is larger than that of the micrometer screw 31, so that the contact area between the jacking block 2 and the blade root 100 can be increased, the jacking block 2 can more effectively jack the blade root 100, and the blade root 100 is clamped in front of the slot walls of the jacking block 2 and the sliding slot 11, so that the accuracy of size measurement of the blade root of the turbine moving blade is ensured.
The jacking block 2 is of a round cake-shaped structure, and the jacking block 2 has fewer edges and corners, so that when the blade root 100 slides into the sliding groove 11, the risk of collision between the blade root 100 and the jacking block 2 can be reduced, the damage to the turbine moving blade caused by measurement of the blade root is avoided, and the safety of size measurement of the blade root of the turbine moving blade is improved.
In a possible implementation manner, as shown in fig. 1 or fig. 5, the fixing sleeve 32 is connected with the positioning block 1 through a snap fit, and the tightening block 2 is connected with the micrometer screw 31 through a thread.
In the embodiment of the application, the tightening block 2 is in threaded connection with the micrometer screw 31, so that the tightening block 2 is stably connected with the micrometer screw 31, the relative position of the tightening block 2 and the micrometer screw 31 is guaranteed not to change, and the accuracy of a measurement result obtained when the dimension of the blade root is measured is further guaranteed. In addition, the micrometer screw 31 penetrates through the through hole 12 and extends into the sliding groove 11, and the jacking block 2 and the micrometer screw 31 are connected through threads, so that the turbine moving blade measuring tool provided by the embodiment of the application can be assembled more conveniently.
In this application embodiment, fixed sleeve 32 passes through the buckle with locating piece 1 and is connected, is convenient for pull down micrometer gauge head 3 from locating piece 1 to when micrometer gauge head 3 breaks down, conveniently pull down micrometer gauge head 3 and maintain, and conveniently be connected micrometer gauge head 3 with locating piece 1 after the maintenance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other similar elements in a process, method, article, or apparatus that comprises the element.
Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only for the purpose of illustrating the technical solutions of the present invention, and not for the purpose of limiting the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (7)
1. A turbine moving blade measuring tool for measuring a dimension of a blade root of a turbine moving blade, characterized by comprising: the device comprises a positioning block (1), a jacking block (2) and a micrometer measuring head (3);
a sliding groove (11) is formed in the positioning block (1), and a through hole (12) is formed in the bottom of the sliding groove (11);
a micrometer screw (31) of the micrometer measuring head (3) penetrates through the through hole (12) and extends into the sliding groove (11), and a fixed sleeve (32) of the micrometer measuring head (3) is connected with the positioning block (1);
the jacking block (2) is positioned in the sliding groove (11), and the jacking block (2) is connected with the micrometer screw (31).
2. The turbine moving blade measuring tool as claimed in claim 1, further comprising: a standard block (4);
the standard block (4) is of a columnar structure, and the sectional shape and the sectional dimension of the standard block (4) on the section perpendicular to the axis of the standard block (4) are the same as the standard sectional shape and the standard sectional dimension of the blade root (100) on the section perpendicular to the axis of the blade root (100).
3. The turbine moving blade measuring tool according to claim 1,
the sliding groove (11) is a through groove arranged on the positioning block (1).
4. The turbine moving blade measuring tool of claim 1, wherein the turbine moving blade measuring tool further comprises: a limiting plate (5);
the sliding groove (11) is a through groove arranged on the positioning block (1);
the limiting plate (5) is connected with the positioning block (1), and the limiting plate (5) seals the first end of the sliding groove (11).
5. The turbine moving blade measuring tool according to claim 1,
in a cross section perpendicular to the runner (11), at least a part of the cross-sectional shape and the cross-sectional dimensions of the runner (11) are the same as the standard cross-sectional shape and the standard cross-sectional dimensions of the blade root (100) in a cross section perpendicular to the axis of the blade root (100).
6. The turbine moving blade measuring tool according to claim 1,
the jacking block (2) is of a round cake-shaped structure, and the diameter of the jacking block (2) is larger than that of the micrometer screw (31);
one end face of the jacking block (2) is connected with the micrometer screw (31), and the axis of the jacking block (2) coincides with the axis of the micrometer screw (31).
7. The turbine moving blade measuring tool according to any one of claims 1 to 6,
the fixed sleeve (32) is connected with the positioning block (1) through a buckle;
the jacking block (2) is connected with the micrometer screw (31) through threads.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121931863.2U CN216620871U (en) | 2021-08-17 | 2021-08-17 | Turbine moving blade measuring tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121931863.2U CN216620871U (en) | 2021-08-17 | 2021-08-17 | Turbine moving blade measuring tool |
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| CN216620871U true CN216620871U (en) | 2022-05-27 |
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| CN (1) | CN216620871U (en) |
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Address after: 214203 No. 25 Huixing North Road, Yixing Economic and Technological Development Zone, Wuxi City, Jiangsu Province Patentee after: Siemens Energy Gas Turbine Components (Jiangsu) Co.,Ltd. Address before: 214203 No. 25 Huixing North Road, Yixing Economic and Technological Development Zone, Wuxi City, Jiangsu Province Patentee before: Siemens Gas Turbine Components (Jiangsu) Co.,Ltd. |
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