Turbine working blade crown top surface and air inlet and exhaust side surface integrated measuring tool
By designing the integrated measuring tool for turbine working blades, the measurement of the top surface, intake and exhaust sides of the blade crown is achieved by clamping in one go, which solves the error accumulation problem caused by multiple measuring tools. , improves the accuracy and consistency of measurements.
Patent Information
- Application Number
- CN202420943807.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-06
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2034-05-06
AI Technical Summary
In the prior art, the method of measuring the crown top surface and inlet and exhaust sides of the low-pressure turbine working blade requires multiple sets of special measuring tools, resulting in many clamping times and cumbersome manufacturing costs, and inconsistent measurement and positioning reference systems and manufacturing. Errors lead to the accumulation of system errors, affecting the stability and accuracy of measurements.
Design an integrated measuring tool for the crown top surface and inlet and exhaust side sides of the turbine working blade blade, including bottom plate, support, tenon and tooth chuck, leaf basin positioning block, metering parts and measuring devices, through the guide plate and guide Components such as sliders, watch seats and watch brackets can complete all dimension inspections in one clamping, reduce manufacturing quantity and time, and avoid inconsistencies in the reference positioning system and manufacturing errors.
The complete detection of all sizes of the blades in one clamping is achieved, reducing manufacturing costs and time, improving measurement accuracy, avoiding the accumulation of clamping errors, and ensuring the consistency of the blade size.
Smart Images
Figure CN222124164U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a measuring tool, in particular to an integrated measuring tool for the top surface of a blade crown and the side surfaces of an inlet and exhaust gas. Background Art
[0002] At present, the measurement method for measuring the top surface of the blade crown and the side surfaces of the inlet and exhaust edges of the low-pressure turbine working blade is to design three sets of special measuring tools for detection: the first set of measuring tools uses the tenon teeth and the back positioning points of the blade body to locate and detect the top surface of the blade crown; the second set of measuring tools uses the tenon teeth and the leading edge positioning points of the blade body to locate and measure the exhaust edge size of the blade crown; the third set of measuring tools uses the tenon teeth and the side surfaces of the blade crown exhaust edge as positioning to measure the inlet edge size of the blade crown.
[0003] The above measurement method has the problems of many clamping times for the blades, which is cumbersome, a large number of measuring tools that need to be designed and manufactured, a long design and manufacturing cycle, and high manufacturing costs. There are also accumulations of system errors caused by inconsistent measurement and positioning reference systems and manufacturing errors of multiple sets of measuring tools. There is also accumulation of clamping errors caused by multiple clamping measurements of the blades, insufficient relative consistency of various blade dimensions under the same state, and great measurement instability. Utility Model Content
[0004] The utility model provides an integrated measuring tool for the crown top surface and the inlet and exhaust side surfaces of a turbine working blade, which can avoid the accumulation of clamping errors caused by multiple clamping measurements and ensure the relative consistency of blade dimensions in the same state.
[0005] The technical solution of the utility model is as follows:
[0006] An integrated measuring tool for the top surface of a turbine blade crown and the side surfaces of the inlet and exhaust edges comprises a base plate, a support, a tenon chuck, a blade basin positioning block, a counter piece and a measuring device, wherein the support and the tenon chuck are arranged on the base plate, and the tenon chuck is located in front of the support; the blade basin positioning block and the counter piece are arranged on the front side of the support, and the measuring device is arranged at the upper end of the support.
[0007] Furthermore, the integrated measuring tool for the top surface of the turbine blade crown and the inlet and exhaust side surfaces, the measuring device includes a guide slide, a guide slide, a gauge seat one, a gauge bracket one, a gauge seat two and a gauge bracket two, the guide slide and the guide slide are arranged at the upper end of the bracket, the guide slide is arranged on the front side of the guide slide; the upper end surface of the guide slide is set as a reference surface, and the upper end of the guide slide is provided with a reference groove; the gauge bracket one is installed on the gauge seat one, and the gauge bracket two is installed on the gauge seat two; the gauge seat one moves along the guide slide or the reference groove with the reference surface as a reference to detect the top surface of the turbine blade crown; the gauge seat two moves along the guide slide to detect the inlet and exhaust side surfaces of the turbine blade crown.
[0008] Furthermore, the integrated measuring tool for the top surface of the crown of the turbine working blade and the side surfaces of the inlet and exhaust sides is provided with a crown top inlet side facing point, a crown top exhaust side facing point, a crown top inlet side comb tooth facing point and a crown top exhaust side comb tooth facing point.
[0009] Furthermore, the bottom plate of the integrated measuring tool for the top surface of the turbine blade crown and the side surfaces of the inlet and exhaust edges is provided with a reference process ball for establishing a reference for the integrated measuring tool.
[0010] Furthermore, in the integrated measuring tool for the top surface of the turbine blade crown and the side surfaces of the inlet and exhaust edges, a baffle is provided on the side end of the tenon chuck.
[0011] The beneficial effects of the utility model are as follows: the utility model can complete the full size detection of the top surface of the blade crown, the exhaust side surface of the blade crown, and the intake side surface of the blade crown through one clamping, thereby reducing the number of special measuring tools manufactured, reducing the manufacturing research and development cost and cycle, and shortening the measurement and detection time; avoiding the accumulation of system errors caused by inconsistent measurement reference positioning systems and manufacturing errors of multiple sets of measuring tools, thereby improving the measurement accuracy; avoiding the accumulation of clamping errors caused by multiple clamping measurements, and ensuring the relative consistency of various blade dimensions in the same state. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 A three-dimensional diagram of the integrated measuring tool for the top surface of the turbine blade crown and the side surfaces of the inlet and exhaust edges;
[0013] Figure 2 The front view of the integrated measuring tool for the top surface of the turbine blade crown and the side surfaces of the inlet and exhaust edges;
[0014] Figure 3 It is the right view of the integrated measuring tool for the top surface of the turbine blade crown and the side surfaces of the inlet and exhaust edges;
[0015] Figure 4 It is a top view of the integrated measuring tool for the top surface of the turbine blade crown and the side surfaces of the inlet and exhaust edges;
[0016] Figure 5 It is a schematic diagram of turbine working blades;
[0017] Figure 6 This is a top view of the turbine blade shroud;
[0018] Figure 7 for Figure 6 TT section view. DETAILED DESCRIPTION
[0019] like Figure 1-7As shown, an integrated measuring tool for the top surface of the blade crown and the side surfaces of the inlet and exhaust edges of a turbine working blade comprises a base plate 1, a support 2, a tenon chuck 3, a blade basin positioning block 4, a counter piece 5 and a measuring device, wherein the support 2 and the tenon chuck 3 are arranged on the base plate 1, the tenon chuck 3 is located in front of the support 2, and a baffle 7 is provided at the side end of the tenon chuck 3; the blade basin positioning block 4 and the counter piece 5 are arranged on the front side of the support 2, and the measuring device is arranged at the upper end of the support 2. The measuring device comprises a guide slide 9, a guide slide 8, a gauge seat 10, a gauge support 11, a gauge seat 2 12 and a gauge support 2 13. The guide slide 9 and the guide slide 8 are arranged at the upper end of the support 2, and the guide slide 9 is arranged at the front side of the guide slide 8; the upper end surface of the guide slide 8 is set as a reference surface 14, and the upper end of the guide slide 8 is provided with a reference groove 15; the gauge support 11 is installed on the gauge seat 10, and the gauge support 2 13 is installed on the gauge seat 2 12; the gauge seat 10 moves along the guide slide 9 or the reference groove 15 with the reference surface 14 as a reference to detect the top surface of the turbine working blade crown 22; the gauge seat 2 12 moves along the guide slide 9 to detect the inlet and exhaust side surfaces of the turbine working blade crown 22. The counter member 5 is provided with a crown top inlet side facing gauge point 18, a crown top exhaust side facing gauge point 19, a crown top inlet side comb tooth facing gauge point 16 and a crown top exhaust side comb tooth facing gauge point 17. The base plate 1 is provided with a reference process ball 6 for integrating the measuring tool to establish a reference.
[0020] The blade basin positioning block 4, the baffle 7, the crown top inlet side facing table point 18, the crown top exhaust side facing table point 19, the crown top inlet side comb tooth facing table point 16 and the crown top exhaust side comb tooth facing table point 17 are all prepared according to the theoretical values specified in the design. The reference surface 14 is designed to be parallel to the crown top inlet side comb tooth 31, and the reference groove 15 is designed to be parallel to the crown top exhaust side comb tooth 32.
[0021] The working process is as follows: the tenon 21 of the turbine working blade is installed in the tenon chuck 3 and positioned by the baffle 7; the blade body of the turbine working blade is positioned by the blade basin positioning block 4;
[0022] When measuring the crown top exhaust side surface 34, install the dial indicator in the gauge bracket 2 13 on the gauge base 2 12, align the dial indicator to zero on the gauge point 19 on the crown top exhaust side surface, then slide along the guide slide 9 to measure the crown top exhaust side surface 34 and read the readings and record the gauge value a; thereafter, align the dial indicator to zero on the crown top intake side surface facing the gauge point 18, then slide along the guide slide 9 to measure the crown top intake side surface 33 and read the readings and record the gauge value b; the gauge value a is the actual size value of the crown top exhaust side surface, and the actual size value of the crown top intake side surface is a+b.
[0023] When measuring the crown top air intake side comb teeth 31, install the dial indicator in the dial bracket 11 on the dial base 10, align the dial indicator to zero on the crown top air intake side comb teeth alignment point 16, then slide along the guide slide 9 on the reference surface 14 to measure the crown top air intake side comb teeth 31 and read the dial value c.
[0024] When measuring the crown top exhaust side comb teeth 32, the dial indicator is zeroed on the crown top exhaust side comb teeth alignment point 17, and then the dial indicator is slid in the reference groove 15 to measure the crown top exhaust side comb teeth 32 and read the table value d.
[0025] The table values c and d are the actual values of the crown top intake side comb teeth 31 and the crown top exhaust side comb teeth 32 respectively.
Claims
1. An integrated measuring tool for the top surface of the blade crown and the side surfaces of the inlet and exhaust sides of a turbine blade, characterized in that: It includes a base plate, a support, a tenon chuck, a blade basin positioning block, a counter piece and a measuring device, wherein the support and the tenon chuck are arranged on the base plate, and the tenon chuck is located in front of the support; the blade basin positioning block and the counter piece are arranged on the front side of the support, and the measuring device is arranged at the upper end of the support.
2. The integrated measuring tool for the top surface of the turbine blade crown and the side surfaces of the inlet and exhaust edges according to claim 1, characterized in that: The measuring device includes a guide slide, a guide slide, a gauge seat 1, a gauge bracket 1, a gauge seat 2 and a gauge bracket 2, the guide slide and the guide slide are arranged at the upper end of the bracket, and the guide slide is arranged on the front side of the guide slide; the upper end surface of the guide slide is set as a reference surface, and the upper end of the guide slide is provided with a reference groove; the gauge bracket 1 is installed on the gauge seat 1, and the gauge bracket 2 is installed on the gauge seat 2; the gauge seat 1 takes the reference surface as a reference and moves along the guide slide or the reference groove to detect the top surface of the turbine working blade crown; the gauge seat 2 moves along the guide slide to detect the side surfaces of the turbine working blade crown inlet and exhaust sides.
3. The integrated measuring tool for the top surface of the turbine blade crown and the side surfaces of the inlet and exhaust edges according to claim 1, characterized in that: The alignment member is provided with a crown top air inlet side alignment point, a crown top exhaust side alignment point, a crown top air inlet side comb tooth alignment point and a crown top exhaust side comb tooth alignment point.
4. The integrated measuring tool for the top surface of the turbine blade crown and the side surfaces of the inlet and exhaust edges according to claim 1, characterized in that: The bottom plate is provided with a reference process ball for integrating the measuring tool to establish a reference.
5. The integrated measuring tool for the top surface of the turbine blade crown and the side surfaces of the inlet and exhaust edges according to claim 1, characterized in that: A baffle is provided at the side end of the tenon tooth chuck.