A steam turbine diaphragm size measuring device

Abstract

This utility model relates to the field of turbine diaphragm measurement technology and discloses a turbine diaphragm size measuring device, including a worktable, with a measuring component slidably connected to the inner wall of the slide groove. This turbine diaphragm size measuring device, through the sliding cooperation between the slider and the slide groove, can drive the fixed frame to move left and right for adjustment, thereby adjusting the left and right position. Furthermore, by using a stepper motor to drive a horizontal lead screw to precisely displace the moving block, the measurement position can be adjusted forward and backward. Combined with the telescopic rod to adjust the height of the measuring jaws, it can achieve automated continuous measurement of the diaphragm body, replacing the traditional manual single-point measurement mode. Measurement data can be transmitted in real time to the measurement display mechanism for recording and analysis, not only reducing subjective errors caused by manual operation but also significantly improving measurement efficiency. Multiple parameter detection can be completed with only one positioning, effectively solving the problems of error-prone manual recording and time-consuming full-parameter detection.

Description

Technical Field

[0001] This utility model relates to the field of turbine diaphragm measurement technology, specifically a turbine diaphragm size measuring device. Background Technology

[0002] As a key component of the steam turbine's flow path, the dimensional accuracy of the diaphragm directly affects steam flow efficiency, unit operational stability, and energy conversion efficiency. During turbine manufacturing, installation, and maintenance, precise measurements of multiple parameters, including the diaphragm's radial dimensions, axial clearance, aperture, and flatness, are necessary to ensure compliance with design standards.

[0003] In the turbine manufacturing process, accurate measurement of diaphragm dimensions is the cornerstone of ensuring product quality meets stringent design standards. The complexity of the manufacturing process dictates the diversity and high precision requirements of diaphragm dimensions. From the thickness, length, and width of the diaphragm to key parameters such as aperture and throat width of the steam passage, dimensional errors in any aspect can be amplified during turbine operation, affecting overall turbine performance. For example, if the diaphragm aperture deviates from the design value, it will cause poor fit between the rotor blades and the diaphragm, leading to additional friction and energy loss.

[0004] Existing measurement methods mostly use manual handheld measuring tools for single-point measurement. The equipment is low-cost and readily available, making it suitable for scenarios with limited budgets. It is flexible and convenient to operate, and can adapt to the measurement needs of complex structures and confined spaces. It has low environmental requirements and can be used normally in on-site working conditions such as dust and temperature fluctuations. It facilitates instant reading and verification, and can quickly verify the accuracy of data. It is simple to maintain, has a low technical threshold, and can be operated by ordinary personnel after simple training.

[0005] While the existing technologies described above offer flexible and portable measurement methods that can adapt to various complex and confined spaces, are easy to maintain, have a low barrier to entry, and are relatively easy for staff to learn, manual handheld measuring instruments for single-point measurements are inefficient and require multiple positioning adjustments to complete full-parameter testing. Furthermore, manual operation is prone to subjective errors, making it difficult to ensure the consistency of measurement benchmarks. Additionally, the lack of automated data recording and analysis functions means that measurement results must be manually recorded and organized, which can easily lead to data errors and omissions, significantly reducing work efficiency. Therefore, we need a turbine diaphragm dimension measuring device. Utility Model Content

[0006] The purpose of this invention is to provide a turbine diaphragm size measuring device to solve the problems mentioned in the background art, which are: low efficiency of manual handheld measuring tools for single-point measurement, requiring multiple positioning adjustments to complete full parameter detection; subjective errors easily introduced by manual operation, making it difficult to ensure the consistency of measurement benchmarks; and lack of automated data recording and analysis functions, requiring manual recording and organization of measurement results, which is prone to data errors and omissions, greatly reducing work efficiency. Therefore, we need a turbine diaphragm size measuring device.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A turbine diaphragm size measuring device includes a worktable, a groove is provided on the top of the worktable, and a measuring component is slidably connected to the inner wall of the groove. A positioning component is installed on the top of the worktable.

[0009] The measuring component includes a slider, a fixed frame is fixedly connected to the top of the slider, and a stepper motor is installed on one side of the fixed frame. The output end of the stepper motor is detachably connected to a horizontal lead screw through a coupling, and a moving block is threadedly connected to the outer wall of the horizontal lead screw. A telescopic rod is provided at the bottom of the moving block, and a measuring gripper is installed at the bottom of the telescopic rod. A balance bar is provided inside the fixed frame.

[0010] The positioning component includes a servo motor. The output end of the servo motor is detachably connected to a support frame via a coupling. A fixing block is fixedly connected to one side of the support frame. A gripping disc is provided on one side of the fixing block. A threaded rod is fixedly connected to one side of the gripping disc. A clamping plate is provided at one end of the threaded rod.

[0011] Preferably, a measuring display mechanism is installed on the top of the workbench, and a partition body is provided inside the positioning component.

[0012] Preferably, the number of sliders is two sets, with two sliders in each set slidably connected in two slide grooves, and the fixing frame can move left and right along the length of the worktable through the cooperation of the sliders and slide grooves.

[0013] Preferably, the output coupling of the stepper motor is coaxially connected to one end of the horizontal lead screw. The horizontal lead screw is horizontally installed inside the fixed frame, and the axis of the horizontal lead screw is parallel to the width direction of the worktable. One end of the horizontal lead screw passes through the interior of the moving block and is threaded into it. The moving block can reciprocate back and forth along the horizontal lead screw under the drive of the stepper motor.

[0014] Preferably, the measuring gripper forms a lifting structure with the moving block via a telescopic rod, and the telescopic rod is vertically installed between the moving block and the measuring gripper. The outer wall of the telescopic rod is provided with scale markings for displaying the telescopic amount.

[0015] Preferably, the servo motor is installed in a groove on the top of the workbench, and the output end of the servo motor coincides with the central axis of the support frame, which can drive the support frame to rotate. The number of fixing blocks is two, and the two fixing blocks are symmetrically arranged about the central axis of the support frame.

[0016] Preferably, the gripper is fixed by a threaded rod and a clamping plate, and the shape and size of the external thread of the threaded rod match the shape and size of the internal thread of the fixing block. The top of the fixing block is provided with a groove, and the clamping plate can move horizontally along the inside of the fixing block.

[0017] Compared with the prior art, the beneficial effects of this utility model are: this steam turbine diaphragm size measuring device,

[0018] First, this utility model uses the sliding of a slider and a sliding groove to drive the fixed frame to move left and right, thereby adjusting the left and right position. By using a stepper motor to drive a horizontal lead screw to move the moving block precisely, the measurement position can be adjusted forward and backward. With the help of a telescopic rod to adjust the height of the measuring jaws, it can realize automated continuous measurement of the partition body, replacing the traditional manual single-point measurement mode. The measurement data can be transmitted to the measurement display mechanism in real time for recording and analysis. This not only reduces the subjective error caused by manual operation, but also greatly improves the measurement efficiency. Multiple parameter detection can be completed with only one positioning, effectively solving the problems of easy error in manual recording and time-consuming full parameter detection.

[0019] Secondly, this utility model uses a servo motor to drive the support frame to rotate, which can drive the fixed blocks on both sides to rotate. Combined with the symmetrical clamping design of the threaded rods inside the fixed blocks on both sides pushing the clamping plate, it can ensure that the partition remains stable with the central axis as the reference during the measurement process. This allows the partition clamped and positioned inside the fixed blocks on both sides of the support frame to rotate and change position, which facilitates continuous measurement and improves work efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0022] Figure 3 This is a schematic diagram of the stepper motor and measuring gripper structure of this utility model;

[0023] Figure 4 This is a schematic diagram of the servo motor and clamping plate structure of this utility model.

[0024] In the diagram: 1. Worktable; 2. Slide rail; 3. Measuring component; 301. Slider; 302. Fixing frame; 303. Stepper motor; 304. Horizontal lead screw; 305. Moving block; 306. Telescopic rod; 307. Measuring gripper; 308. Balance bar; 4. Measuring display mechanism; 5. Positioning component; 501. Servo motor; 502. Support frame; 503. Fixing block; 504. Handle; 505. Threaded rod; 506. Clamping plate; 6. Partition body. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 A turbine diaphragm size measuring device includes a workbench 1, a slide groove 2 is provided on the top of the workbench 1, and a measuring component 3 is slidably connected to the inner wall of the slide groove 2. A positioning component 5 is installed on the top of the workbench 1.

[0027] The measuring component 3 includes a slider 301, a fixed frame 302 is fixedly connected to the top of the slider 301, and a stepper motor 303 is installed on one side of the fixed frame 302. The output end of the stepper motor 303 is detachably connected to a horizontal lead screw 304 through a coupling. A moving block 305 is threadedly connected to the outer wall of the horizontal lead screw 304. A telescopic rod 306 is provided at the bottom of the moving block 305, and a measuring gripper 307 is installed at the bottom of the telescopic rod 306. A balance bar 308 is provided inside the fixed frame 302.

[0028] The positioning component 5 includes a servo motor 501. The output end of the servo motor 501 is detachably connected to a support frame 502 via a coupling. A fixing block 503 is fixedly connected to one side of the support frame 502. A gripping plate 504 is provided on one side of the fixing block 503. A threaded rod 505 is fixedly connected to one side of the gripping plate 504. A clamping plate 506 is provided at one end of the threaded rod 505.

[0029] Through the above technical solution, the sliding of the slider 301 and the sliding groove 2 can drive the fixed frame 302 to move left and right, thereby adjusting the left and right position. The stepper motor 303 drives the horizontal lead screw 304 to move the moving block 305 precisely, which can adjust the measurement position back and forth. With the help of the telescopic rod 306 to adjust the height of the measuring jaw 307, the automated continuous measurement of the partition body 6 can be realized, replacing the traditional manual single-point measurement mode. The measurement data can be transmitted to the measurement display mechanism 4 in real time for recording and analysis. This not only reduces the subjective error caused by manual operation, but also greatly improves the measurement efficiency. Multiple parameter detection can be completed with only one positioning, effectively solving the problems of easy error in manual recording and long time consumption for full parameter detection.

[0030] Specifically, a measuring display mechanism 4 is installed on the top of the workbench 1, and a partition body 6 is installed inside the positioning component 5.

[0031] Through the above technical solution, the measurement and display mechanism 4 can receive and display the partition size data collected by the measurement component 3 in real time, realize the visualization of data and automated recording, and at the same time, the partition body 6 is stably clamped by the positioning component 5 as the measurement object, providing a clear target carrier for the measurement work.

[0032] Specifically, there are two sets of sliders 301, with two sliders 301 in each set slidably connected in two slide grooves 2, and the fixed frame 302 can move left and right along the length of the worktable 1 through the cooperation of the sliders 301 and the slide grooves 2.

[0033] Through the above technical solution, the cooperation between the two sets of sliders 301 and the slide groove 2 provides stable guiding support for the fixed frame 302, ensuring that the fixed frame 302 remains stable during left and right movements, thereby driving the measuring component 3 to accurately adjust the measuring position in the length direction of the worktable 1, adapting to the measurement needs of partitions of different sizes.

[0034] Specifically, the output coupling of the stepper motor 303 is coaxially connected to one end of the horizontal lead screw 304. The horizontal lead screw 304 is horizontally installed inside the fixed frame 302, and the axis of the horizontal lead screw 304 is parallel to the width direction of the worktable 1. One end of the horizontal lead screw 304 passes through the interior of the moving block 305 and is threaded with it. The moving block 305 can reciprocate along the horizontal lead screw 304 under the drive of the stepper motor 303.

[0035] Through the above technical solution, the rotational motion of the stepper motor 303 is transmitted to the horizontal lead screw 304 via the coupling. The rotational motion is converted into the linear motion of the moving block 305 by the threaded engagement between the horizontal lead screw 304 and the moving block 305, thereby realizing the precise displacement adjustment of the measuring component 3 in the width direction of the worktable 1 and ensuring the accuracy of the measurement position.

[0036] Specifically, the measuring gripper 307 forms a lifting structure with the moving block 305 via the telescopic rod 306, and the telescopic rod 306 is vertically installed between the moving block 305 and the measuring gripper 307. The outer wall of the telescopic rod 306 is provided with scale markings for displaying the amount of extension.

[0037] Through the above technical solution, the telescopic movement of the telescopic rod 306 can drive the measuring gripper 307 to achieve vertical height adjustment, so that it can contact the measuring points at different height positions of the partition body 6. The scale markings on the outer wall make it easy for operators to intuitively understand the telescopic amount and assist in accurately controlling the height position of the measuring gripper 307.

[0038] Specifically, the servo motor 501 is installed in the groove opened on the top of the worktable 1, and the output end of the servo motor 501 coincides with the central axis of the support frame 502, which can drive the support frame 502 to rotate. There are two fixing blocks 503, and the two fixing blocks 503 are symmetrically arranged about the central axis of the support frame 502.

[0039] Through the above technical solution, when the servo motor 501 drives the support frame 502 to rotate, since its output end coincides with the central axis of the support frame 502, it can ensure that the support frame 502 rotates smoothly, and drive the fixed block 503 to achieve circumferential angle adjustment. The two symmetrically arranged fixed blocks 503 can provide clamping and positioning for the two partition bodies 6 at one time, ensuring the continuity of the measurement work.

[0040] Specifically, the grip 504 forms a fixed structure with the clamping plate 506 through the threaded rod 505, and the shape and size of the external thread of the threaded rod 505 match the shape and size of the internal thread of the fixing block 503. The top of the fixing block 503 is provided with a groove, and the clamping plate 506 can move horizontally along the inside of the fixing block 503.

[0041] Through the above technical solution, rotating the grip 504 can drive the threaded rod 505 to rotate within the fixed block 503. The threaded engagement pushes the clamping plate 506 to move horizontally along the groove inside the fixed block 503, thereby achieving the clamping and loosening of the partition body 6 of different sizes, thus enabling the partition body 6 to be measured stably.

[0042] Working Principle: When using this turbine diaphragm size measuring device, firstly, the diaphragm body 6 to be measured is manually placed in the groove of the fixing block 503. The grip 504 is rotated, and through the threaded engagement of the threaded rod 505 with the fixing block 503, the clamping plate 506 is moved horizontally until it tightly clamps the diaphragm body 6, completing the fixed positioning. Next, through the engagement of the slider 301 with the slide groove 2, the fixing frame 302 is pushed to move left and right along the length of the worktable 1, adjusting the measuring component 3 to a suitable left or right position. Then, the stepper motor 303 is started, and its output rotational motion is transmitted to the horizontal lead screw 304 via a coupling. When the horizontal lead screw 304 rotates, it drives the moving block 305 to reciprocate along the horizontal lead screw 304, thereby driving the measuring... The measuring jaw 307 moves precisely in the width direction of the worktable 1. At the same time, by adjusting the extension and retraction of the telescopic rod 306, the height of the measuring jaw 307 is changed so that it is aligned with the partition body 6. When the measuring jaw 307 reaches the designated measurement position, the thickness of the partition body 6 can be measured. The measurement data is transmitted to the measurement display mechanism 4 in real time, visualized on the touch screen, and automatically recorded. After the measurement is completed, the servo motor 501 is started, and its output end drives the support frame 502 to rotate and change the position of the two fixed blocks 503. This allows another partition body 6 to be measured to be moved to the measurement position, so that continuous measurement can be performed. This completes all the work. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit defined by the appended claims and their equivalents.

Claims

1. A turbine diaphragm sizing device comprising a worktable (1), characterised in that: The top of the workbench (1) is provided with a slide groove (2), and the inner wall of the slide groove (2) is slidably connected with a measuring component (3). The top of the workbench (1) is equipped with a positioning component (5). The measuring component (3) includes a slider (301), a fixed frame (302) is fixedly connected to the top of the slider (301), and a stepper motor (303) is installed on one side of the fixed frame (302). The output end of the stepper motor (303) is detachably connected to a horizontal lead screw (304) through a coupling, and a moving block (305) is threadedly connected to the outer wall of the horizontal lead screw (304). A telescopic rod (306) is provided at the bottom of the moving block (305), and a measuring gripper (307) is installed at the bottom of the telescopic rod (306). A balance bar (308) is provided inside the fixed frame (302). The positioning component (5) includes a servo motor (501), the output end of which is detachably connected to a support frame (502) via a coupling, and a fixing block (503) is fixedly connected to one side of the support frame (502). A grip plate (504) is provided on one side of the fixing block (503), and a threaded rod (505) is fixedly connected to one side of the grip plate (504). A clamping plate (506) is provided at one end of the threaded rod (505).

2. A turbine diaphragm sizing device according to claim 1, wherein: The top of the workbench (1) is equipped with a measurement display mechanism (4), and the interior of the positioning component (5) is provided with a partition body (6).

3. A turbine diaphragm sizing device according to claim 1, wherein: The number of sliders (301) is two sets, with two sliders (301) in each set slidingly connected in two grooves (2), and the fixed frame (302) can move left and right along the length of the worktable (1) through the cooperation of the sliders (301) and the grooves (2).

4. A turbine diaphragm sizing device according to claim 1, wherein: The output coupling of the stepper motor (303) is coaxially connected to one end of the horizontal lead screw (304). The horizontal lead screw (304) is horizontally installed inside the fixed frame (302), and the axis of the horizontal lead screw (304) is parallel to the width direction of the worktable (1). One end of the horizontal lead screw (304) passes through the interior of the moving block (305) and is threadedly engaged with it. The moving block (305) can reciprocate along the horizontal lead screw (304) under the drive of the stepper motor (303).

5. The turbine diaphragm size measuring device according to claim 1, characterized in that: The measuring gripper (307) forms a lifting structure with the moving block (305) via the telescopic rod (306), and the telescopic rod (306) is vertically installed between the moving block (305) and the measuring gripper (307). The outer wall of the telescopic rod (306) is provided with scale markings for displaying the amount of extension.

6. The turbine diaphragm size measuring device according to claim 1, characterized in that: The servo motor (501) is installed in a groove on the top of the workbench (1), and the output end of the servo motor (501) coincides with the central axis of the support frame (502), which can drive the support frame (502) to rotate. There are two fixing blocks (503), and the two fixing blocks (503) are symmetrically arranged about the central axis of the support frame (502).

7. The turbine diaphragm size measuring device according to claim 1, characterized in that: The grip (504) forms a fixed structure with the clamping plate (506) through the threaded rod (505), and the shape and size of the external thread of the threaded rod (505) match the shape and size of the internal thread of the fixing block (503). The top of the fixing block (503) is provided with a groove, and the clamping plate (506) can move horizontally along the inside of the fixing block (503).

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