CN212963176U - Steam turbine cylinder expansion displacement sensor calibration device - Google Patents
Steam turbine cylinder expansion displacement sensor calibration device Download PDFInfo
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- CN212963176U CN212963176U CN202021422059.7U CN202021422059U CN212963176U CN 212963176 U CN212963176 U CN 212963176U CN 202021422059 U CN202021422059 U CN 202021422059U CN 212963176 U CN212963176 U CN 212963176U
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Abstract
The utility model belongs to the technical field of steam turbine state is kept watch on, concretely relates to steam turbine jar displacement sensor calibration equipment that expands. The two cushion blocks are respectively fixed at one end of the bottom plate, the mounting plate is fixed on the two cushion blocks, the right support plate is fixed at the other end of the bottom plate, and the left support plate is fixed on the bottom plate and is parallel to the right support plate; the measuring chute and the guide chute are fixed between the left support plate and the right support plate in parallel, the hand wheel is fixed at one end of the screw rod, the screw rod is fixed on the right support plate, the other end of the screw rod is fixed on the slide block, the screw rod penetrates through the cover plate, and the cover plate is fixed on the right support plate; the sliding block is arranged between the measuring chute and the guide chute, and the sliding block can be moved between the measuring chute and the guide chute by rotating the hand wheel; one end of the optical axis penetrates through the left support plate and is fixed on the sliding block, and the other end of the optical axis is fixed with the transition sleeve. The problems that the operation of an original calibration mode is complex and the precision cannot meet the requirement are effectively solved, and the working efficiency is improved extremely high.
Description
Technical Field
The utility model belongs to the technical field of steam turbine state is kept watch on, concretely relates to steam turbine jar displacement sensor calibration equipment that expands.
Background
The steam turbine cylinder expansion displacement measuring instrument participates in the protection tripping of the steam turbine, and the sensor has the characteristics of high resolution, small hysteresis and compact structure in the whole measuring range, and senses the change of the distance by moving a ferromagnetic core in the sensor. The structure is particularly related to the protection of the steam turbine, and each overhaul period needs to be sent to a professional institution for verification.
At present, the method commonly adopted for checking the steam turbine cylinder expansion displacement sensor in China is realized by a vernier caliper and an auxiliary fixing device. The method has the following defects: 1) the measurement is carried out in a mode that the vernier caliper is fixed with the ferromagnetic core and is moved, and the measurement is not accurate. Because the precision requirement of the instrument is 2% of the measuring range, the error caused by the method is large, and the accurate calibration of the sensor cannot be ensured; 2) due to the fact that the magnetic core is moved, the linearity of the movement cannot be guaranteed in the checking process; 3) the tight connection between the caliper and the iron core cannot be ensured; 4) the checking time and the checking workload are large.
In view of the above circumstances, a special steam turbine cylinder expansion displacement sensor calibration device needs to be developed.
Disclosure of Invention
The existing steam turbine cylinder expansion displacement measurement sensor has a plurality of problems in calibration, firstly, the calibration precision cannot be guaranteed, and the error is large; meanwhile, the checking steps are complex, the checking time and the checking workload are large, and the checking can not be carried out on site. Based on this, the utility model aims to provide a steam turbine jar displacement sensor calibration equipment that expands, the motion that expands through the simulation jar comes test probe measuring accuracy, and fundamentally eliminates the linear big problem of measuring error who does not cause well of unit operation in-process probe.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a steam turbine cylinder expansion displacement sensor calibration device comprises a bottom plate, a left support plate, a right support plate, a cover plate, a measuring chute, a guide chute, a cushion block, a slide block, a screw, a hand wheel, an optical axis, a mounting plate and a transition sleeve; the two cushion blocks are respectively fixed at one end of the bottom plate, the mounting plate is fixed on the two cushion blocks, the right support plate is fixed at the other end of the bottom plate, and the left support plate is fixed on the bottom plate and is parallel to the right support plate; the measuring chute and the guide chute are fixed between the left support plate and the right support plate in parallel, the hand wheel is fixed at one end of the screw rod, the screw rod is fixed on the right support plate, the other end of the screw rod is fixed on the slide block, the screw rod penetrates through the cover plate, and the cover plate is fixed on the right support plate; the sliding block is arranged between the measuring chute and the guide chute, and the sliding block can be moved between the measuring chute and the guide chute by rotating the hand wheel; one end of the optical axis penetrates through the left support plate and is fixed on the sliding block, and the other end of the optical axis is fixed with the transition sleeve.
The two cushion blocks are respectively fixed at one end of the bottom plate through screws.
The mounting plate is fixed on the two cushion blocks through screws.
The right support plate is fixed at the other end of the bottom plate through a screw.
And a measuring scale is arranged on the measuring chute.
The cover plate is fixed on the right support plate through screws.
One end of the optical axis penetrates through the left support plate and is fixed on the sliding block through a screw.
The transition sleeve is provided with a screw hole, and the movable ferromagnetic core of the sensor is fixed in the screw hole.
The utility model discloses the beneficial effect who gains does:
the utility model discloses can verify static characteristic, linear characteristic and the corresponding fastener characteristic of sensor. The problems that the operation of an original calibration mode is complex and the precision cannot meet the requirement are effectively solved, and the working efficiency is improved extremely high.
Drawings
FIG. 1 is a block diagram of a steam turbine cylinder expansion displacement sensor verification device;
in the figure: 1. a base plate; 2. a left support plate; 3. a right support plate; 4. a cover plate; 5. a measuring chute; 6. a guide chute; 7. cushion blocks; 8. a slider; 9. a screw; 10. a hand wheel; 11. an optical axis; 12. mounting a plate; 13. and (4) transition sleeve.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the utility model discloses a bottom plate 1, left extension board 2, right extension board 3, apron 4, measurement spout 5, direction spout 6, cushion 7, slider 8, screw rod 9, hand wheel 10, optical axis 11, mounting panel 12, excessive cover 13. The sensor and the sensor moving ferromagnetic core do not belong to the utility model part.
The device comprises two parts, a sensor fixing support and a measuring device. The concrete structure is as follows:
fixing a support: the displacement sensor for fixing the expansion of the steam turbine cylinder is composed of two cushion blocks 7, a mounting plate 12 and a bottom plate 1.
A measuring device: the device comprises a left support plate 2, a right support plate 3, a cover plate 4, a measuring chute 5, a guide chute 6, a sliding block 8, a screw rod 9, a hand wheel 10, an optical axis 11, a mounting plate 12 and a transition sleeve 13.
The connection relationship of each part is as follows:
the two cushion blocks 7 are respectively fixed at one end of the bottom plate 1 through screws.
The mounting plate 12 is fixed on the two cushion blocks 7 through screws for fixing the sensor.
The right support plate 3 is fixed at the other end of the bottom plate 1 through screws, and the left support plate 2 is fixed on the bottom plate 1 and is parallel to the right support plate 3.
The measuring chute 5 and the guide chute 6 are fixed between the left support plate 2 and the right support plate 3 in parallel, wherein the guide chute 6 plays a role in guiding left and right, and the measuring chute 5 is provided with a measuring scale for measuring and guiding.
The hand wheel 10 is fixed at one end of the screw 9, and the screw 9 is fixed on the right support plate 3. The other end of the screw 9 is fixed on the slide block 8. The screw 9 passes through the cover plate 4, and the cover plate 4 is fixed on the right support plate 3 through screws.
The sliding block 8 is arranged between the measuring chute 5 and the guide chute 6, and the sliding block 8 can be moved between the measuring chute 5 and the guide chute 6 by rotating the hand wheel 10.
One end of the optical axis 11 penetrates through the left support plate 2 and is fixed on the sliding block 8 through a screw, and the other end of the optical axis 11 is fixed with the transition sleeve 13.
The transition sleeve 13 is provided with a screw hole M3 in which the moving ferromagnetic core of the sensor is fixed.
In use, the sensor to be verified is secured to the mounting plate 12 and the moving ferromagnetic core of the sensor is secured to the transition sleeve 13. The sensor is powered on, the hand wheel 10 is rotated, the sliding block 8 moves in the measuring chute 5 and the guide chute 6, the optical axis 11 is driven to move, and the ferromagnetic core measured by the sensor moves in the sensor. The sensors can be verified by recording test data at regular intervals (e.g. 5mm) of movement as dictated by the measurement chute 5.
Claims (8)
1. The utility model provides a steam turbine jar displacement sensor calibration equipment that expands which characterized in that: the device comprises a bottom plate, a left support plate, a right support plate, a cover plate, a measuring chute, a guide chute, a cushion block, a slide block, a screw rod, a hand wheel, an optical axis, a mounting plate and a transition sleeve; the two cushion blocks are respectively fixed at one end of the bottom plate, the mounting plate is fixed on the two cushion blocks, the right support plate is fixed at the other end of the bottom plate, and the left support plate is fixed on the bottom plate and is parallel to the right support plate; the measuring chute and the guide chute are fixed between the left support plate and the right support plate in parallel, the hand wheel is fixed at one end of the screw rod, the screw rod is fixed on the right support plate, the other end of the screw rod is fixed on the slide block, the screw rod penetrates through the cover plate, and the cover plate is fixed on the right support plate; the sliding block is arranged between the measuring chute and the guide chute, and the sliding block can be moved between the measuring chute and the guide chute by rotating the hand wheel; one end of the optical axis penetrates through the left support plate and is fixed on the sliding block, and the other end of the optical axis is fixed with the transition sleeve.
2. The steam turbine cylinder expansion displacement sensor verification device of claim 1, wherein: the two cushion blocks are respectively fixed at one end of the bottom plate through screws.
3. The steam turbine cylinder expansion displacement sensor verification device of claim 1, wherein: the mounting plate is fixed on the two cushion blocks through screws.
4. The steam turbine cylinder expansion displacement sensor verification device of claim 1, wherein: the right support plate is fixed at the other end of the bottom plate through a screw.
5. The steam turbine cylinder expansion displacement sensor verification device of claim 1, wherein: and a measuring scale is arranged on the measuring chute.
6. The steam turbine cylinder expansion displacement sensor verification device of claim 1, wherein: the cover plate is fixed on the right support plate through screws.
7. The steam turbine cylinder expansion displacement sensor verification device of claim 1, wherein: one end of the optical axis penetrates through the left support plate and is fixed on the sliding block through a screw.
8. The steam turbine cylinder expansion displacement sensor verification device of claim 1, wherein: the transition sleeve is provided with a screw hole, and the moving ferromagnetic core of the sensor is fixed in the screw hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021422059.7U CN212963176U (en) | 2020-07-17 | 2020-07-17 | Steam turbine cylinder expansion displacement sensor calibration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021422059.7U CN212963176U (en) | 2020-07-17 | 2020-07-17 | Steam turbine cylinder expansion displacement sensor calibration device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212963176U true CN212963176U (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021422059.7U Active CN212963176U (en) | 2020-07-17 | 2020-07-17 | Steam turbine cylinder expansion displacement sensor calibration device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212963176U (en) |
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2020
- 2020-07-17 CN CN202021422059.7U patent/CN212963176U/en active Active
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