CN2281523Y - NOn-contact linearity gauge - Google Patents
NOn-contact linearity gauge Download PDFInfo
- Publication number
- CN2281523Y CN2281523Y CN 96210842 CN96210842U CN2281523Y CN 2281523 Y CN2281523 Y CN 2281523Y CN 96210842 CN96210842 CN 96210842 CN 96210842 U CN96210842 U CN 96210842U CN 2281523 Y CN2281523 Y CN 2281523Y
- Authority
- CN
- China
- Prior art keywords
- sensor
- measuring
- linearity
- current vortex
- straightness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model relates to a non-contact linearity gauge which is used for measuring the linearity of an inner diameter of a motor stator in the manufacture of the motor of an oil submersible electric pump, and can also be used for measuring the linearity of the inner diameters of the long and thin holes of various minor diameters. The linearity gauge is composed of a measuring rod, a measuring amplifier and a display instrument. The measuring rod adopts an electric whorl type non-contact displacement sensor, and the no-touch of the measurement sensor and the oil submersible electric pump can be realized in the measuring process. The derived area of the sensor is greater than the thickness of a silicon steel sheet, and thus the measuring accuracy is not influenced by the lamination accuracy of the silicon steel sheet.
Description
The utility model is a kind of surveying instrument that is used for the submersible electric pump motor at the linearity of manufacture process motor stator internal diameter, also can be used for measuring the internal diameter linearity of the elongated hole of various minor diameters.
In the manufacture process of the submersible electric pump motor that is used for the oil field, the linearity of diameter of stator bore is the important parameter that influences product quality, so the measurement of diameter of stator bore linearity is particularly important.Present measurement means is that pneumatic Instrument for Straightness or these two kinds of instruments of differential transformer Instrument for Straightness all are to adopt contact type measurement, be difficult for adjusting, when being used for submersible electric pump motor stator inner diameter measurement, owing to be subjected to the influence of silicon steel sheet to cause read untrue, and because the contact measurement contact is easy to wear.
The purpose of this utility model provide a kind of in measuring process survey sensor do not contact measuring accuracy height, good stability, the long-time contactless Instrument for Straightness of not having wearing and tearing of using with submersible electric pump motor stator internal diameter.
Contactless Instrument for Straightness described in the utility model is to realize as follows: it is made up of sounding rod, measuring amplifier and Displaying Meter, in sounding rod, adopt the electric vortex type non-contact displacement sensor, realized that in measuring process survey sensor does not contact with submersible electric pump motor stator internal diameter, and the induction area of sensor is much larger than silicon steel sheet thickness, so measuring accuracy is not influenced by silicon steel sheet lamination precision.
Accompanying drawing is the synoptic diagram of sounding rod: [9] are the mobile jib of sounding rod among the figure, in order to current vortex sensor [3] and locating sleeve [10] to be installed, connecting link [1] is connected the measurement point of sounding rod being sent to motor stator internal diameter with a stock at the high order end of sounding rod when measuring.[2] adjust screw for sensor, [4] are the sensor retainer spring, by adjusting sensor screw [2], according to the diameter range extruding of measured object or the radial position of releasing spring [4] change sensor, leave a minim gap between sensor [3] and the measured object.
In the both sides of sensor [3] a pair of protection piece [5] is housed also.Lead [7] is connected sensor [3] with the transmitter [8] that provides the sensor excitation electric current with output demodulation and micrometric displacement voltage signal.About two symmetric positions be a pair of symmetrical locating sleeve [10], two locating sleeves form straight line as two strong points measuring between two strong points, the reference data when measuring.[11] for guaranteeing the jump ring of locating sleeve in axial location.Accessory power outlet [12] is delivered to Displaying Meter with the voltage signal of transmitter output.
The key technical indexes of the present utility model:
1. supply voltage～220V ± 10%
2. fuse 200mA
3. measurement range ± 0.5mm ± 0.25mm
4. resolution ± 0.01mm
5. measuring accuracy ± 2%FS
6. temperature range sensor-10～+ 150 ℃
0～55 ℃ of instrument
7. temperature drift 1%C
Contactless Instrument for Straightness described in the utility model is sent into inner chamber with sounding rod from an end of motor stator when measuring, by locating sleeve as supporting anchor point, at this moment sensor is apart from about the about 0.5mm of submersible electric machine with oil diameter of stator bore wall, send the high frequency alternating electromagnetic field of about f=1MHz during instrument work by current vortex sensor, produce the alternation current vortex on the inner diameter wall surface, this current vortex reacts on radio-frequency current by sensor again.Obviously, current vortex and counteractive size thereof are relevant to the distance size of submersible electric pump motor stator inner diameter wall with sensor.When this gap was constant, the output signal of transmitter was constant, when this gap changes, the output signal of transmitter and gap be varied to direct ratio, and linear within the specific limits.
When measuring, sounding rod measurement point in motor stator is located (measurement point refers to the motor stator inner diameter location of sensor correspondence), make mark with mark at the motor housing of measurement point, the rotary electric machine stator is read to measure number (maximal value-minimum value) and is counted and note, and uses in order to data processing.Measuring number (maximal value-minimum value) * 0.01/2000 is the linearity of motor stator internal diameter in sounding rod locating sleeve scope.
Contactless Instrument for Straightness described in the utility model is owing to realized that survey sensor does not contact with the internal diameter of measured object in measuring process, and measuring accuracy height, good stability, the long-time use do not have wearing and tearing.When measuring submersible electric pump motor stator internal diameter, because the induction area of sensor is much larger than silicon steel sheet thickness, so measuring accuracy is not subjected to the influence of silicon steel sheet lamination precision.This measuring instrument can also be used to measuring the internal diameter linearity of the elongated hole of various minor diameters except that the linearity that can survey the submersible electric pump motor stator.
Claims (2)
1. one kind by sounding rod; measuring amplifier; the contactless Instrument for Straightness that Displaying Meter is formed is characterized in that on the mobile jib [9] at sounding rod current vortex sensor [3] and a pair of locating sleeve [10] being installed; the axial location of locating sleeve is determined by jump ring [11]; leave a minim gap between current vortex sensor [3] and the measured object; there is a pair of protection piece [5] both sides of sensor [3]; pad [6] is in order to the axial location of fixation of sensor; lead [7] is connected current vortex sensor [3] with transmitter [8]; accessory power outlet [12] is delivered to Displaying Meter with the voltage signal of transmitter output, and connecting link [1] joins with outer attached stock.
2. the described contactless Instrument for Straightness of claim 1 is characterized in that pushing or having loosened the position that spring [4] changes sensor [3] by sensor dog screw [2].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96210842 CN2281523Y (en) | 1996-05-08 | 1996-05-08 | NOn-contact linearity gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96210842 CN2281523Y (en) | 1996-05-08 | 1996-05-08 | NOn-contact linearity gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2281523Y true CN2281523Y (en) | 1998-05-13 |
Family
ID=33893974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96210842 Expired - Fee Related CN2281523Y (en) | 1996-05-08 | 1996-05-08 | NOn-contact linearity gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2281523Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000932A (en) * | 2012-11-29 | 2013-03-27 | 上海空间电源研究所 | Adjusting method and device of assembly flatness of rectangular storage battery |
| CN110320035A (en) * | 2019-08-09 | 2019-10-11 | 东北大学秦皇岛分校 | A kind of linear bearing linearity measurer based on pressure change |
| CN110375689A (en) * | 2019-08-05 | 2019-10-25 | 北京海格立斯智能装备技术有限公司 | A kind of mining site automation equipment Compressible position sensor protector |
-
1996
- 1996-05-08 CN CN 96210842 patent/CN2281523Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000932A (en) * | 2012-11-29 | 2013-03-27 | 上海空间电源研究所 | Adjusting method and device of assembly flatness of rectangular storage battery |
| CN103000932B (en) * | 2012-11-29 | 2015-01-28 | 上海空间电源研究所 | Adjusting method and device of assembly flatness of rectangular storage battery |
| CN110375689A (en) * | 2019-08-05 | 2019-10-25 | 北京海格立斯智能装备技术有限公司 | A kind of mining site automation equipment Compressible position sensor protector |
| CN110320035A (en) * | 2019-08-09 | 2019-10-11 | 东北大学秦皇岛分校 | A kind of linear bearing linearity measurer based on pressure change |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |