Coaxiality measuring tool applied to gas turbine generator set
By designing a coaxiality measuring tool for gas turbine generator sets, the problem of difficulty in measuring the coaxiality of the gas turbine output shaft and the generator input shaft was solved, thereby improving installation efficiency and unit performance.
Patent Information
- Application Number
- CN202520224147.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-12-19
- Estimated Expiration
- 2035-02-13
AI Technical Summary
Existing measuring instruments cannot directly measure the coaxiality of the gas turbine output shaft and the generator input shaft, resulting in a time-consuming installation process and difficulty in controlling the coaxiality accurately, which affects unit vibration and power generation efficiency.
A coaxiality measuring tool was designed, comprising an upper clamping ring for the gas turbine output shaft, a lower clamping ring for the output shaft, an upper clamping ring for the generator input shaft, a lower clamping ring for the input shaft, a dial indicator fixing guide shaft, a fastening nut, a fixing guide shaft washer, a dial indicator fixing bushing, and a wing nut. The coaxiality of the two shafts can be measured by combining these components.
It enables effective measurement of the coaxiality of the two shafts, improves installation efficiency, reduces unit vibration, extends service life, and reduces maintenance costs.
Smart Images
Figure CN223691680U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a coaxality measuring tool, especially a coaxality measuring tool applied to a gas turbine generator set. BACKGROUND
[0002] In the field of gas turbine generator set, the installation of the generator and the gas turbine is a key problem, one of which is the coaxality measurement of the output shaft of the gas turbine and the input shaft of the generator; in the installation process, effective, efficient and accurate measurement can save a lot of time for product forming; in the use process of the gas turbine generator set, the accurate coaxality control of the output shaft of the gas turbine and the input shaft of the generator can effectively reduce the vibration of the unit, improve the power generation efficiency, prolong the service life and reduce the maintenance cost.
[0003] The structure of a measured product of a gas turbine generator set is shown in Figure 1 The output shaft (1) of the gas turbine and the input shaft (2) of the generator are measured and checked for coaxality during the installation process to ensure the use performance of the product after installation, but the existing measuring tools cannot directly measure the coaxality due to the distance between the two shafts and the large diameter of the two shafts, so it is urgent to solve this problem. SUMMARY
[0004] In view of the problems existing in the installation process, the utility model provides a coaxality measuring tool, which can solve the above problems.
[0005] To achieve the above purpose, the technical scheme of the utility model is as follows: a coaxality measuring tool for measuring the coaxality of two rotating shafts, the structure of which is shown in Figure 2 The coaxality measuring tool comprises a gas turbine output shaft clamping upper ring (101), a gas turbine output shaft clamping lower ring (102), a generator input shaft clamping upper ring (201), a generator input shaft clamping lower ring (202), a dial gauge fixed guide shaft (3), a dial gauge fixed guide shaft fastening nut (4), a dial gauge fixed guide shaft gasket (5), a dial gauge fixed shaft sleeve (6), a dial gauge (7) and a butterfly nut (8).
[0006] The gas turbine output shaft clamping upper ring (101) and the gas turbine output shaft clamping lower ring (102) clamp the gas turbine output shaft (1) by bolts; the gas turbine output shaft clamping upper ring (101) is provided with a two-surface vertical guide piece on the top for the contact of the dial gauge (7), so as to measure the coaxiality of the gas turbine output shaft (1) and the generator input shaft (2) subsequently; the generator input shaft clamping upper ring (201) and the generator input shaft clamping lower ring (202) clamp the generator input shaft (2) by bolts; the dial gauge fixed guide shaft fastening nut (4) and the dial gauge fixed guide shaft washer (5) fix the dial gauge fixed guide shaft (3) on the generator input shaft clamping upper ring (201); the dial gauge fixed shaft sleeve (6) and the wing nut (8) fix the dial gauge (7) on the dial gauge fixed guide shaft (3), at this time, the dial gauge probe is attached to the two surfaces of the two-surface vertical guide piece on the top of the gas turbine output shaft clamping upper ring (101), but the dial gauge reading is 0. Advantageous effects
[0007] 1. The coaxiality of two shafts with a distance or too large diameter is measured.
[0008] 2. The coaxiality data of two shafts are read out dynamically and repeatedly by rotating one end shaft, the positions of two shafts are adjusted subsequently during installation, the detection of quality inspection personnel is facilitated during quality inspection, and the work efficiency is greatly improved. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 is the structure diagram of a measured product of a certain gas turbine generator set.
[0010] Figure 2 is the axial view of the utility model.
[0011] Figure 3 is the front view of the utility model.
[0012] Figure 4 is the top view of the utility model. DETAILED DESCRIPTION
[0013] As Figure 2 The gas turbine output shaft clamping upper ring (101) and the gas turbine output shaft clamping lower ring (102) clamp the gas turbine output shaft (1) by bolts as shown in Figure 1 The gas turbine output shaft clamping upper ring (101) is provided with a two-surface vertical guide piece on the top for the contact of the dial gauge (7), so as to measure the coaxiality of the gas turbine output shaft (1) and the generator input shaft (2) subsequently.
[0014] Further, as Figure 2The generator input shaft clamping upper ring (201) and the generator input shaft clamping lower ring (202) are used to clamp the generator input shaft (2) by means of bolts Figure 1 The dial gauge guide shaft (3) is fixed on the generator input shaft clamping upper ring (201) by using the dial gauge guide shaft fastening nut (4) and the dial gauge guide shaft washer (5) and a dial gauge.
[0015] Further: as Figure 3 And as Figure 4 The dial gauge (7) is fixed on the dial gauge guide shaft (3) by using the dial gauge fixing sleeve (6) and the wing nut (8), at this time the dial gauge probe is in contact with the two vertical guides on the top of the gas turbine output shaft clamping upper ring (101), but the dial gauge reading is 0.
[0016] Further: as Figure 1 The generator input shaft (2) is rotated by 45°, 90°, 135°, 180°, 225°, 270° and 315° in the same direction respectively, and the dial gauge reading is read out and recorded each time for process or quality inspection.
Claims
1. A coaxiality measuring tool for use in gas turbine generator sets, characterized in that: it is used for... The application relates to a coaxiality measuring device for two rotating shafts, which comprises a gas turbine output shaft clamping upper ring (101), a gas turbine output shaft clamping lower ring (102), a generator input shaft clamping upper ring (201), a generator input shaft clamping lower ring (202), a dial gauge fixed guide shaft (3), a dial gauge fixed guide shaft fastening nut (4), a dial gauge fixed guide shaft gasket (5), a dial gauge fixed shaft sleeve (6), a dial gauge (7) and a butterfly nut (8). The gas turbine output shaft clamping upper ring (101) and the gas turbine output shaft clamping lower ring (102) are used for clamping a gas turbine output shaft (1) through bolts; the top of the gas turbine output shaft clamping upper ring (101) is provided with a two-surface vertical guide for contacting the dial gauge (7); the generator input shaft clamping upper ring (201) and the generator input shaft clamping lower ring (202) are used for clamping a generator input shaft (2) through bolts; the dial gauge fixed guide shaft fastening nut (4) and the dial gauge fixed guide shaft gasket (5) are used for fixing the dial gauge fixed guide shaft (3) on the generator input shaft clamping upper ring (201); the dial gauge fixed shaft sleeve (6) and the butterfly nut (8) are used for fixing the dial gauge (7) on the dial gauge fixed guide shaft (3); at this time, the dial gauge measuring head is attached to the two surfaces of the two-surface vertical guide on the top of the gas turbine output shaft clamping upper ring (101), but the dial gauge reading is 0.