CN220772088U - Special measuring tool for diameter of rotary drum groove of gas turbine - Google Patents
Special measuring tool for diameter of rotary drum groove of gas turbine Download PDFInfo
- Publication number
- CN220772088U CN220772088U CN202321969055.4U CN202321969055U CN220772088U CN 220772088 U CN220772088 U CN 220772088U CN 202321969055 U CN202321969055 U CN 202321969055U CN 220772088 U CN220772088 U CN 220772088U
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- 230000001960 triggered effect Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 238000003908 quality control method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The utility model provides a special measuring tool for the diameter of a rotary drum groove of a gas turbine, which comprises a measuring tool main body; one side of the measuring tool main body is fixed with a measuring rod through a fixing nut; the dial indicator is fixed on the meter frame through fastening screws; the measuring tool main body is provided with a lever and is fixed through a pin shaft; a movable measuring head is arranged below the lever; a bracket is arranged on the measuring tool main body through a bolt; a through hole is formed above the support, one end of the support is fixed by a screw plug, and the other end of the support is provided with a top sleeve. The utility model can realize the quality control of the diameter size of the rotary drum groove of the gas turbine in the rotary drum turning and subsequent checking processes, can measure the size by using a measuring tool before processing to the drawing size, and can adjust the turning quantity by reading a dial indicator, thereby ensuring the dimensional accuracy in the manufacturing process, preventing the subsequent problems of air pressure leakage and the like.
Description
Technical Field
The utility model belongs to the field of gas turbine inspection, and particularly relates to a special measuring tool for the diameter of a rotary drum groove of a gas turbine.
Background
The groove at the 0-stage disk end of the rotary drum of the low-pressure compressor of the gas turbine is matched with the gas seal ring in the assembly stage, and the gas seal teeth on the gas seal ring are attached to the supporting cover on the casing, so that a closed cavity is formed inside the rotor, the air pressure inside the rotor is kept, the energy loss is reduced, the diameter precision of the groove is higher, and the precision of the groove has a larger influence on the air pressure state of the subsequent low-pressure compressor during working. The groove at the 0-level disk end of the rotary drum belongs to a recessed annular groove, and a conventional outside micrometer cannot measure the groove due to interference, and can only measure the groove after turning is completed by a three-coordinate measuring machine, so that the dimension of the groove is difficult to effectively measure in the machining and manufacturing process.
Disclosure of Invention
The utility model aims to provide a special measuring tool for detecting the diameter of a rotary drum groove of a gas turbine.
A special measuring tool for the diameter of a rotary drum groove of a gas turbine comprises a measuring tool main body; one side of the measuring tool main body is fixed with a measuring rod through a fixing nut; the dial indicator is fixed on the meter frame through fastening screws; the measuring tool main body is provided with a lever and is fixed through a pin shaft; a movable measuring head is arranged below the lever; a bracket is arranged on the measuring tool main body through a bolt; a through hole is formed above the support, one end of the support is fixed by a screw plug, and the other end of the support is provided with a top sleeve.
Further, a spring is arranged in the top sleeve, so that when the spring is in a free state, the top sleeve and the lever keep a certain distance, and when the measured diameter is too small, the limiting function of the top sleeve is triggered.
The utility model has the beneficial effects that: the utility model can realize the quality control of the diameter size of the rotary drum groove of the gas turbine in the rotary drum turning and subsequent checking processes, and can measure the size by using the measuring tool before processing to the drawing size, the turning quantity is adjusted by the dial indicator reading, the dimensional accuracy in the manufacturing process is ensured, the subsequent problems of air pressure leakage and the like are prevented, and the cost of the special measuring tool is about 0.4 ten thousand yuan. The accurate inspection of the parts is realized with the minimum cost, and the economy and the practicability are considerable.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a three-dimensional view of the present utility model;
fig. 3 is a schematic diagram of a drum groove.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
1. As shown in fig. 1-3, a special measuring tool for the diameter of a rotary drum groove of a gas turbine is characterized by comprising a measuring tool main body 3; one side of the measuring tool main body 3 is fixed with a measuring rod 2 through a fixing nut 1; the meter body 3 is provided with a meter frame 5, and the dial indicator 4 is penetrated on the meter frame 5 and fixed by a fastening screw 6; the measuring tool main body 3 is provided with a lever 11 which is fixed through a pin shaft 10; a movable measuring head 12 is arranged below the lever 11; the measuring tool main body 3 is provided with a bracket 7 through a bolt 9; a through hole is arranged above the support 7, one end of the support is fixed by a screw plug, and the other end of the support is provided with a top sleeve.
The spring is placed in the top sleeve, so that when the spring is in a free state, the top sleeve 8 keeps a certain distance from the lever 11, and when the measured diameter is too small, the limiting function of the top sleeve is triggered.
Before measurement, the dial indicator 4 head is fully contacted with the lever 11 by using a special measuring tool for calibrating the gauge or the combined gauge block, the dial of the dial indicator 4 is rotated to be at a zero position, and the numerical value is recorded.
The distance between the measuring rod 2 and the movable measuring head 12 is the theoretical dimension of measurement, the lever 11 can be displaced to the dial indicator side by about 10mm and the top sleeve side by about 6mm, and the measuring range can be met; when the movable measuring head 12 displaces for 1mm of travel, the upper and lower distances are consistent according to the lever principle, so that the displacement of the movable measuring head 12 is 1mm as well, the precision can reach 0.01mm, and the precision tolerance requirement of the measured part is met.
After the calibration is completed, the measuring value can be obtained by adjusting the movable measuring head 12 to find the diameter position of the groove of the rotary drum and reading the dial indicator.
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 modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (2)
1. The special measuring tool for the diameter of the rotary drum groove of the gas turbine is characterized by comprising a measuring tool main body (3); one side of the measuring tool main body (3) is fixed with a measuring rod (2) through a fixing nut (1); the dial indicator (4) is penetrated on the meter frame (5) and fixed by a fastening screw (6); the measuring tool main body (3) is provided with a lever (11) and is fixed through a pin shaft (10); a movable measuring head (12) is arranged below the lever (11); a bracket (7) is arranged on the measuring tool main body (3) through a bolt (9); a through hole is formed in the upper portion of the support (7), one end of the support is fixed through a screw plug, and a top sleeve is arranged at the other end of the support.
2. The special measuring tool for the diameter of the rotary drum groove of the gas turbine according to claim 1, wherein a spring is placed in the top sleeve, so that when the spring is in a free state, the top sleeve (8) keeps a certain distance from the lever (11), and when the measured diameter is too small, the limiting function of the top sleeve is triggered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321969055.4U CN220772088U (en) | 2023-07-25 | 2023-07-25 | Special measuring tool for diameter of rotary drum groove of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321969055.4U CN220772088U (en) | 2023-07-25 | 2023-07-25 | Special measuring tool for diameter of rotary drum groove of gas turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220772088U true CN220772088U (en) | 2024-04-12 |
Family
ID=90616420
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321969055.4U Active CN220772088U (en) | 2023-07-25 | 2023-07-25 | Special measuring tool for diameter of rotary drum groove of gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220772088U (en) |
-
2023
- 2023-07-25 CN CN202321969055.4U patent/CN220772088U/en active Active
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