CN215865022U - Calibrating device for electrical out-of-roundness measuring instrument - Google Patents

Calibrating device for electrical out-of-roundness measuring instrument Download PDF

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Publication number
CN215865022U
CN215865022U CN202121687750.2U CN202121687750U CN215865022U CN 215865022 U CN215865022 U CN 215865022U CN 202121687750 U CN202121687750 U CN 202121687750U CN 215865022 U CN215865022 U CN 215865022U
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calibration
probe
clamping plate
dial indicator
ruler frame
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CN202121687750.2U
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Chinese (zh)
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史敏
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Xian Shaangu Power Co Ltd
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Xian Shaangu Power Co Ltd
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Abstract

The utility model provides a calibrating device for an electrical out-of-roundness measuring instrument, which solves the problem that the accuracy of the measuring result of the existing electrical out-of-roundness measuring instrument cannot be judged; the calibration dial indicator is a digital display dial indicator and comprises an ruler frame and a calibration probe, the ruler frame is arranged on the supporting base, and the calibration probe is arranged on the ruler frame; the clamping plate is arranged on the ruler frame, a mounting hole is formed in the clamping plate, a measuring probe of the electrical out-of-roundness measuring instrument is arranged in the mounting hole, and the calibration probe and the measuring probe are arranged oppositely and used for calibrating the measuring probe. The calibration device can be used for the periodic calibration of the electrical out-of-roundness measuring instrument, and whether the measurement requirement is met or not is judged according to the calibration precision, so that the measurement precision and the measurement management system requirement are ensured, and meanwhile, the effective operation of a measurement management system is ensured.

Description

Calibrating device for electrical out-of-roundness measuring instrument
Technical Field
The utility model belongs to the field of calibration, and particularly relates to a calibration device of an electrical out-of-roundness measuring instrument, which is a universal tool for measurement and calibration and is mainly used in the field of rotating manufacturing machinery such as turbine machinery, steam turbines, motors and the like.
Background
The electrical out-of-roundness measuring instrument is widely applied to electrical out-of-roundness measurement of rotors of rotating machines, in particular to electrical out-of-roundness measurement of rotors of turbomachines, steam turbines, motors and the like. The electrical out-of-roundness measurement value is an important detection item of the rotor of the rotary machine, and the accuracy of the measurement value is directly related to the reliable and safe operation of the rotary machine product. However, since the electrical out-of-roundness measuring apparatus is a non-standardized measuring apparatus including a transducer, a displacement display instrument, a measuring probe, an extension cable, and the like, the combined electrical out-of-roundness measuring apparatus is used for measuring an electrical out-of-roundness value of a rotor of a rotary machine product. Because the instrument belongs to a non-standardized detection instrument, the accuracy of the measurement result cannot be judged, and the accuracy of the detection result cannot be judged, the instrument does not meet the management requirements of the metering detection equipment and the metering management system, and further cannot carry out normal measurement work.
Disclosure of Invention
The utility model aims to solve the problem that the accuracy of a measuring result of the existing electrical out-of-roundness measuring instrument cannot be judged, and provides a calibrating device for the electrical out-of-roundness measuring instrument. The calibration device can be used for the periodic calibration of the electrical out-of-roundness measuring instrument, and whether the electrical out-of-roundness measuring instrument meets the measurement requirement is judged according to the calibration precision, so that the measurement precision and the measurement management system requirement are ensured, and meanwhile, the effective operation of a measurement management system is ensured.
In order to achieve the above purpose, the utility model adopts the following technical solutions:
a calibration device for an electrical out-of-roundness measuring instrument comprises a supporting base, a clamping plate and a calibration dial indicator; the calibration dial indicator is a digital display dial indicator and comprises an ruler frame and a calibration probe, the ruler frame is arranged on the supporting base, and the calibration probe is arranged on the ruler frame; the clamping plate is arranged on the ruler frame, a mounting hole is formed in the clamping plate, a measuring probe of the electrical out-of-roundness measuring instrument is arranged in the mounting hole, and the calibration probe and the measuring probe are arranged oppositely and used for calibrating the measuring probe.
Further, in order to ensure the stability of the calibration signal, the tail end of the calibration probe is provided with a calibration disc, so that the butt joint area of the calibration probe and the measurement probe is increased.
Furthermore, the supporting base and the clamping plate are made of quenched and tempered 45 steel, and the calibration disc is made of quenched and tempered 35CrMo steel.
Further, in order to prevent the measuring probe from being damaged or deformed by clamping, a mounting sleeve is arranged in the mounting hole in the clamping plate, and an expansion gap is formed in the mounting sleeve.
Furthermore, the ruler frame is of an L-shaped structure and comprises a first supporting plate and a second supporting plate which are connected; the second supporting plate is arranged on the supporting base, and the calibration probe is arranged on the first supporting plate.
Furthermore, be provided with the installation slot on the support base, the second backup pad inserts in the installation slot, realizes supporting the base and being connected of second backup pad, meanwhile, can set up the width of installation slot and the thickness of second backup pad to be the same, and the two passes through fixing bolt to realize the firm installation of calibration amesdial.
Furthermore, in order to realize the adjustment of the position of the measuring probe, a waist-shaped hole can be formed in the second support plate, and the clamping plate is connected with the second support plate through the mounting bolt and the waist-shaped hole, so that the position of the second support plate can be adjusted, and then the position of the measuring probe can be adjusted.
Further, in order to improve the calibration precision, the calibration dial indicator adopts a digital display dial indicator with the resolution of 0.001 mm.
Compared with the prior art, the utility model has the following beneficial effects:
1. the calibration device for the electrical out-of-roundness measuring instrument solves the self-calibration problem of the electrical out-of-roundness measuring instrument of the non-standardized detecting instrument, and judges whether the electrical out-of-roundness measuring instrument meets the measurement requirement or not through the self-calibration precision, so that the measurement precision meets the requirements of related technical standards.
2. The calibration device for the electrical non-circularity tester is convenient to operate, visual in display and high in precision, can be used for periodically calibrating the electrical non-circularity tester, ensures that the measured data is accurate and reliable, and meets the requirements of normal production and technical measurement.
3. The calibration device for the electrical out-of-roundness measuring instrument meets the requirements of a measurement management system, and meanwhile, the effective operation of a measurement management system is ensured.
Drawings
FIG. 1 is a schematic structural diagram of a calibration apparatus for an electrical non-circularity measuring apparatus according to the present invention.
Reference numerals: 1-supporting base, 2-calibrating dial indicator, 3-clamping plate, 21-ruler frame, 22-calibrating probe, 23-calibrating disc, 211-first supporting plate, 212-second supporting plate and 31-installing sleeve.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention and are not intended to limit the scope of the present invention.
The utility model provides a calibrating device of an electrical out-of-roundness measuring instrument, aiming at the problem that the accuracy of the measuring result of the electrical out-of-roundness measuring instrument is a non-standardized detecting instrument and cannot be judged. The calibration device realizes the measurement and calibration problems of the electrical out-of-roundness measuring instrument in daily use, ensures the stability and adjustability of the detected instrument, and meets the requirements of measurement instrument management, measurement systems and measurement instrument measurement accuracy calibration.
As shown in fig. 1, the calibration device for the electrical non-circularity measuring instrument provided by the utility model comprises a supporting base 1, a clamping plate 3 and a calibration dial indicator 2; the calibration dial gauge 2 comprises a gauge frame 21 and a calibration probe 22, the gauge frame 21 is arranged on the support base 1, the support base 1 ensures the stable installation of the calibration dial gauge 2, and the calibration probe 22 is arranged on the gauge frame 21; the clamping plate 3 is arranged on the ruler frame 21, a mounting hole is formed in the clamping plate, a measuring probe of the electrical out-of-roundness measuring instrument is arranged in the mounting hole, the measuring probe is clamped and taken down through screwing and unscrewing of a fixing bolt, and the calibration probe 22 is arranged opposite to the measuring probe and used for calibrating the measuring probe.
The utility model adopts the modified dial indicator to calibrate the electrical out-of-roundness measuring instrument, when the dial indicator is modified, the ruler frame supporting plate on the side far away from the calibration probe 22 is removed so as to facilitate the installation of the measurement probe of the electrical out-of-roundness measuring instrument, and simultaneously, the calibration disc 23 is added at the tail end of the calibration probe 22, namely, the end part area of the measuring rod of the digital dial indicator is increased (a plane calibration disc with phi 30mm is processed by bonding, the thickness of the calibration disc is 1mm), the butt joint area with the measurement probe is ensured, and the stability of a calibration signal is ensured. The dial indicator can be a digital display dial indicator with the resolution of 0.001mm, and metering verification is carried out regularly (every year) to ensure that the dial indicator is in an effective verification period.
In the embodiment of the utility model, after the calibration dial indicator 2 is modified, the scale frame 21 is in an L-shaped structure, and specifically comprises a first supporting plate 211 and a second supporting plate 212 which are connected; the second support plate 212 is disposed on the support base 1, and the calibration probe 22 is disposed on the first support plate 211. At this time, the support base 1 is provided with an installation clamping groove, and the second support plate 212 is inserted into the installation clamping groove, so that the support base 1 is connected with the second support plate 212. Specifically, the width of the installation clamping groove is the same as the thickness of the second support plate 212, and the installation clamping groove and the second support plate are connected through a fixing bolt and used for realizing stable installation of the calibration dial indicator 2.
In the embodiment of the utility model, the clamping plate 3 can move left and right on the ruler frame 21 to adjust the transverse distance so as to determine the installation distance between the measuring probe and the end surface of the digital dial indicator. Specifically, an adjusting jack screw may be provided on the holding plate 3. When the position of the clamping plate 3 is adjusted, the adjusting jackscrew can be loosened, after the adjustment is finished, the adjusting jackscrew is screwed, the tail end of the adjusting jackscrew abuts against the ruler frame 21, and the clamping plate 3 is fixed; or the position of the clamping plate 3 can be adjusted in the following way, a waist-shaped hole is formed in the second supporting plate 212, the clamping plate 3 is connected with the second supporting plate 212 through the mounting bolt and the waist-shaped hole, and the position of the second supporting plate 212 can be preliminarily adjusted by screwing and unscrewing the mounting bolt. In the calibration process, after the position of the clamping plate 3 is determined, the distance between the measuring probe and the end face of the digital dial indicator can be adjusted (fine adjustment) through a knob of the digital dial indicator.
In the embodiment of the utility model, the supporting base 1 and the clamping plate 3 are both made of hardened and tempered 45 steel, and the calibration disc 23 is made of hardened and tempered 35CrMo steel. And a mounting sleeve 31 is arranged in the mounting hole on the clamping plate 3, and an expansion gap is arranged on the mounting sleeve 31. The measuring probe of the electrical out-of-roundness measuring instrument is arranged on the clamping plate 3 through the copper sleeve (namely the mounting sleeve 31) with the expansion gap, the copper sleeve with the expansion gap mainly has the function of preventing the surface of the measuring probe from being clamped or deformed, at the moment, the upper end of the clamping plate 3 can be provided with a through hole, and a bolt penetrates through the through hole to fasten and connect the two sides of the clamping plate provided with the expansion gap.
When the calibration device of the electrical non-circularity tester is calibrated, a knob of the calibration dial indicator 2 is rotated, a gap between a measuring probe and the end face of the calibration probe 22 is finely adjusted, when the displacement digital display instrument of the electrical non-circularity tester displays-8V, the displacement digital display instrument is a calibration starting position, and the digital dial indicator is zeroed at the position and is used as a calibration base point. And rotating a digital display dial indicator knob of the calibration device left and right at the calibration base point, and calibrating and recording at intervals of 5 micrometers within the range of +/-50 micrometers. The utility model is suitable for testing the electrical out-of-roundness of various rotating machinery rotors, in particular to turbomachines, steam turbines, motors, water turbines and the like, and the detection precision is +/-1 per thousand.

Claims (10)

1. The utility model provides an electric out-of-roundness measuring appearance calibrating device which characterized in that: comprises a supporting base (1), a clamping plate (3) and a calibration dial indicator (2);
the calibration dial indicator (2) is a digital display dial indicator and comprises an ruler frame (21) and a calibration probe (22), the ruler frame (21) is arranged on the support base (1), and the calibration probe (22) is arranged on the ruler frame (21);
the clamping plate (3) is arranged on the ruler frame (21) and provided with a mounting hole, the measuring probe of the electrical out-of-roundness measuring instrument is arranged in the mounting hole, and the calibration probe (22) is arranged opposite to the measuring probe and used for calibrating the measuring probe.
2. The electrical non-circularity meter calibration apparatus according to claim 1, wherein: the tail end of the calibration probe (22) is provided with a calibration disc (23) for increasing the butt joint area with the measuring probe.
3. The electrical non-circularity meter calibration apparatus according to claim 2, wherein: the material of the supporting base (1) and the clamping plate (3) is 45 steel after thermal refining, and the material of the calibration disc (23) is 35CrMo steel after thermal refining.
4. The electrical non-circularity meter calibration apparatus according to claim 1, 2 or 3, wherein: the mounting structure is characterized in that a mounting sleeve (31) is arranged in the mounting hole of the clamping plate (3), an expansion gap is formed in the mounting sleeve (31), and the mounting sleeve (31) is used for preventing the measuring probe from being damaged or deformed by clamping.
5. The electrical non-circularity meter calibration apparatus according to claim 4, wherein: the ruler frame (21) is of an L-shaped structure and comprises a first supporting plate (211) and a second supporting plate (212) which are connected; the second support plate (212) is arranged on the support base (1), and the calibration probe (22) is arranged on the first support plate (211).
6. The electrical non-circularity meter calibration apparatus according to claim 5, wherein: the supporting base (1) is provided with an installation clamping groove, and the second supporting plate (212) is inserted into the installation clamping groove to realize connection of the supporting base (1) and the second supporting plate (212).
7. The electrical non-circularity meter calibration apparatus according to claim 6, wherein: the width of the mounting clamping groove is the same as the thickness of the second supporting plate (212), and the mounting clamping groove and the second supporting plate are connected through a fixing bolt.
8. The electrical non-circularity meter calibration apparatus according to claim 7, wherein: be provided with waist shape hole on second backup pad (212), grip block (3) are connected with second backup pad (212) through construction bolt and waist shape hole to can realize the position adjustment of second backup pad (212).
9. The electrical non-circularity meter calibration apparatus according to claim 8, wherein: the calibration dial indicator (2) adopts a digital display dial indicator with the resolution of 0.001 mm.
10. The electrical non-circularity meter calibration apparatus according to claim 7, wherein: the adjusting jackscrew is arranged on the clamping plate (3), penetrates through the clamping plate, and the tail end of the adjusting jackscrew abuts against the ruler frame (21) and is used for adjusting the position of the clamping plate (3).
CN202121687750.2U 2021-07-23 2021-07-23 Calibrating device for electrical out-of-roundness measuring instrument Active CN215865022U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202121687750.2U CN215865022U (en) 2021-07-23 2021-07-23 Calibrating device for electrical out-of-roundness measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202121687750.2U CN215865022U (en) 2021-07-23 2021-07-23 Calibrating device for electrical out-of-roundness measuring instrument

Publications (1)

Publication Number Publication Date
CN215865022U true CN215865022U (en) 2022-02-18

Family

ID=80331597

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202121687750.2U Active CN215865022U (en) 2021-07-23 2021-07-23 Calibrating device for electrical out-of-roundness measuring instrument

Country Status (1)

Country Link
CN (1) CN215865022U (en)

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