CN102374846A - Closed type displacement sensor calibrating device - Google Patents
Closed type displacement sensor calibrating device Download PDFInfo
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- CN102374846A CN102374846A CN2011102827706A CN201110282770A CN102374846A CN 102374846 A CN102374846 A CN 102374846A CN 2011102827706 A CN2011102827706 A CN 2011102827706A CN 201110282770 A CN201110282770 A CN 201110282770A CN 102374846 A CN102374846 A CN 102374846A
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Abstract
The invention discloses a closed type displacement sensor calibrating device, which comprises a power electric machine connected with a movable shaft, the movable shaft is supported by an angular contact bearing pack, the movable shaft is equipped with a analyte movable ring, both the analyte movable ring and the pick-up probe are sealed in the sealing cavity provided with a medium inlet and a medium outlet, the end cover of the sealing cavity is connected with a differential head and a probe protective sleeve, the sensor bracket moves in a straight line by arranging one bearing between the differential head measuring rod and the sensor bracket, the pick-up probe and the sensor bracket are relatively fixed, the probe protective sleeve is connected with the pick-up probe, and the tail of the pick-up probe is connected with a sensor post treatment and result display part. The closed type displacement sensor calibrating device provided by the invention has the characteristics of calibrating optical fibre displacement sensors and other displacement sensors in liquid and gas fluid media under static and rotational conditions, so that the calibration environment of the sensor is approximate to the operating ambient of the sensor and then the resolution of the sensor is obtained under the condition of most approximate to the operating ambient.
Description
Technical field
The present invention relates to the transducer calibration technical field, particularly a kind of closed displacement transducer caliberating device.
Background technology
Optical fibre displacement sensor is a kind of novel displacement measurement sensor that is in period of expansion; Carry out displacement measurement according to the reflection of light principle; Has the measuring accuracy height; Probe diameter is little, the material behavior of testee is relied on advantages such as little, and traditional relatively condenser type and electric vortex type displacement sensor etc. has application prospect widely.Mostly the demarcation of at present known optical fibre displacement sensor is to adopt the axial displacement static check device of commercialization or claim the displacement static checking instrument, and it is little that this type of installs general volume, in light weight, easy to carry, both can use in the laboratory and also can take on-the-spot the use to.But; Because medium is influential for reflection of light; And then can have influence on the resolution of sensor, and the displacement calibrating testing table of existing productization can only be demarcated in air dielectric, and there is certain difficulty in the demarcation in water and other liquid; So be necessary to design a kind of enclosed, can carry out the experimental provision that optical fibre displacement sensor is demarcated to the different medium application conditions.
Summary of the invention
For overcoming the shortcoming of above-mentioned prior art; The purpose of this invention is to provide a kind of closed displacement transducer caliberating device; Have in the fluid media (medium) of liquid, gas, under static and the condition of rotating, the characteristics that optical fibre displacement sensor and other displacement transducers are demarcated; Make the demarcation environment of sensor approach its environment for use, obtain sensor the most near the resolution under the environment for use.
In order to achieve the above object, the technical scheme of the present invention's employing is:
A kind of closed displacement transducer caliberating device comprises power motor 3, and power motor 3 is fixed on the worktable 1 through motor base 2; The output shaft of power motor 3 is connected through the left end of motor coupling part 4 and moving axis 8, and moving axis 8 is supported by ball bearing group 7, and moving axis 8 right-hand members are equipped with measured object rotating ring 27; Measured object rotating ring 27 is realized being connected with interior shrunk-on ring 26 interference fit of rotating ring, and shrunk-on ring 26 is connected with locating sleeve 29 in the rotating ring, and locating sleeve 29 is connected with moving axis 8; Measured object rotating ring 27 all is sealed in the seal chamber 11 with sensor probe 17 and sensor stand 18 thereof, and seal chamber 11 is fixed on the worktable 1 through annular seal space base 25, and seal chamber 11 left sides are by 6 sealings of moving axis end cap; The right side is sealed by annular seal space end cap 14; Be provided with in the seal chamber 11 gland 10 with ball bearing group 7 carry out axial location and and seal chamber between isolation, seal chamber 11 tops are provided with medium inlet 12, media outlet 30 is offered in the bottom; Annular seal space end cap 14 circumferentially is connected with differential head 22; Annular seal space end cap 14 circumferentially is connected with probe protective sleeve 16, and differential head 22 is provided with set nut 24 and location fixing sleeve 20, and the measuring staff of differential head 22 is connected with location fixing sleeve 20; Location fixing sleeve 20 is provided with deep groove ball bearing 19 and supports; Deep groove ball bearing 19 outer rings are connected with sensor stand 18, and an end of sensor probe 17 is contained on the sensor stand 18, and sensor probe 17 passes annular seal space end cap 14 and is installed in the probe protective sleeve 16; Sensor probe 17 afterbodys connect sensor aftertreatment and display part 21 as a result, adopt clearance fit between sensor stand 18 and the annular seal space end cap 14.
Trip bolt is directly adopted in described motor coupling part 4, also can use shaft coupling.
Described ball bearing group 7 is made up of two angular contact balls or deep groove ball bearing.
Described seal chamber 11 adopts integral sealing chamber or closed annular seal space.
Adopt interference fit to be connected or to connect between the measuring staff of described differential head 22 and the location fixing sleeve 20 with glue.
The present invention can be in fluid media (medium)s such as liquid, gas, the transducer calibration under static and rotation condition.For realizing this purpose; The present invention adopts power motor 3 that measured object rotating ring 27 can be rotated under different rotating speeds; Adopt seal chamber 11 to make the demarcation environment can be liquid or gas medium, through differential head 22, control displacement input quantity; Utilize sensor probe 17 and sensor aftertreatment and the output quantity of display part 21 as a result, can obtain the calibration curve of sensor.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is an accurate control displacement part-structure synoptic diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Referring to Fig. 1 and Fig. 2, a kind of closed displacement transducer caliberating device comprises power motor 3; Power motor 3 is fixed on the worktable 1 through motor base 2, and the output shaft of power motor 3 is connected through the left end of motor coupling part 4 and moving axis 8, drives moving axis 8 and rotates; Moving axis 8 is supported by a pair of angular contact bearing group 7, and moving axis 8 right-hand members are equipped with measured object rotating ring 27, and measured object rotating ring 27 is realized being connected through interference fit with the interior shrunk-on ring 26 of rotating ring; Realized location and installation for measured object rotating ring 27, shrunk-on ring 26 adopts trundle 28 to be connected with locating sleeve 29 in the rotating ring, and locating sleeve 29 is connected with moving axis 8 employing flat keys makes measured object rotating ring 27 realize rotating; Measured object rotating ring 27 all is sealed in the seal chamber 11 with sensor probe 17 and sensor stand 18, and seal chamber 11 is fixed on the worktable 1 as supplemental support through annular seal space base 25, and seal chamber 11 left sides are by moving axis end cap 6 and 5 sealings of first lip envelope; The right side is sealed through an O type circle 13 by annular seal space end cap 14; Be provided with in the seal chamber 11 gland 10 and second lip envelope 9 with angular contact bearing group 7 carry out axial location and and seal chamber between isolation, be used to prevent the oil leak of bearing and isolate that seal chamber 11 tops are provided with medium inlet 12 with the annular seal space media implementation; Media outlet 30 is offered in the bottom; Be used to and inject in the annular seal space and the discharge medium, annular seal space end cap 14 circumferentially is connected through the 2nd O type circle 23 with differential head 22, and annular seal space end cap 14 circumferentially is connected through the 3rd O type circle 15 with probe protective sleeve 16; Prevent the dielectric leakage in the annular seal space through O type circle; Make the demarcation environment of caliberating device can be fluid media (medium)s such as gas, liquid, differential head 22 is provided with set nut 24 and location fixing sleeve 20, and the measuring staff of differential head 22 is connected with location fixing sleeve 20; Set nut 24 is used for differential head 22 is fixed on annular seal space end cap 14; Location fixing sleeve 20 is provided with deep groove ball bearing 19 and supports, and deep groove ball bearing 19 outer rings are connected with sensor stand 18, are used for the helical motion of differential head 22 is converted into the rectilinear motion of sensor stand 18; One end of sensor probe 17 is contained on the sensor stand 18; Sensor probe 17 passes annular seal space end cap 14 and is installed in the probe protective sleeve 16, and sensor stand 18 is connected with probe protective sleeve 16 through the glue envelope, and probe protective sleeve 16 is connected with sensor probe 17 through the glue envelope; Thereby drive sensor probe 17 moving linearlies; Sensor probe 17 afterbodys connect sensor aftertreatment and display part 21 as a result, and the result who records is shown and exports, and adopt clearance fit between sensor stand 18 and the annular seal space end cap 14; Guarantee moving of sensor stand 18, for sensor probe 17 provides known displacement input quantity relative to straight line.
Trip bolt is directly adopted in described motor coupling part 4, also can use shaft coupling.
Described angular contact ball bearing group 7 is made up of two angular contact balls or deep groove ball bearing.
Described seal chamber 11 adopts integral sealing chamber or closed annular seal space.
Adopt interference fit to be connected or to connect between the measuring staff of described differential head 22 and the location fixing sleeve 20 with glue.
Principle of work of the present invention is:
At first sensor probe 17 being close together with the end face of measured object rotating ring 27 contacts fully, as the leading zero's of demarcating; Power supply opening with sensor probe 17; Wait for a period of time, treat that sensor pops one's head in behind 17 light sources and sensor display part 21 numerical stabilities, from opening entry sensor probe 17 output numerical value at zero point; Every afterwards turn differential head 22 1 lattice; The end face of measured object rotating ring 27 increases by 10 μ m with respect to the axial spacing of sensor probe 17, treat display part 21 numerical stabilities of sensor after, numerical value measured in record.For guaranteeing result's confidence level, under same room temperature environment, continuous several times is demarcated, the nominal data that promptly obtains after several groups of data that record are averaged; Then nominal data is handled the resolution of the Fibre Optical Sensor that obtains demarcating and family curve.
The present invention provides a kind of closed displacement transducer caliberating device to be used for optical fibre displacement sensor is demarcated; Having can be in fluid media (medium) such as liquid, gas; Under the condition of static and rotation; To the characteristics that optical fibre displacement sensor is demarcated, make the demarcation environment of sensor approach its environment for use, obtain sensor near the resolution under the environment for use; Also can be used for other displacement transducers, particularly the working sensor principle receives the demarcation of the displacement transducer of conductive medium influence.
Claims (5)
1. a closed displacement transducer caliberating device comprises power motor (3), and power motor (3) is fixed on the worktable (1) through motor base (2); The output shaft of power motor (3) is connected through the left end of motor coupling part (4) and moving axis (8), it is characterized in that: moving axis (8) is supported by pair of ball bearing pack (7), and moving axis (8) right-hand member is equipped with measured object rotating ring (27); Measured object rotating ring (27) is realized being connected with interior shrunk-on ring (26) interference fit of rotating ring; Shrunk-on ring (26) is connected with locating sleeve (29) in the rotating ring, and locating sleeve (29) is connected with moving axis (8), and measured object rotating ring (27) all is sealed in the seal chamber (11) with sensor probe (17) and sensor stand (18); Seal chamber (11) is fixed on the worktable (1) through annular seal space base (25); Seal chamber (11) left side is by moving axis end cap (6) sealing, and the right side is sealed by annular seal space end cap (14), be provided with in the seal chamber (11) gland (10) with ball bearing group (7) carry out axial location and and seal chamber between isolation; Seal chamber (11) top is provided with medium inlet (12); Media outlet (30) is offered in the bottom, and annular seal space end cap (14) circumferentially is connected with differential head (22), and annular seal space end cap (14) circumferentially is connected with probe protective sleeve (16); Differential head (22) is provided with set nut (24) and location fixing sleeve (20); The measuring staff of differential head (22) is connected with location fixing sleeve (20), and location fixing sleeve (20) is provided with deep groove ball bearing (19) and supports, and deep groove ball bearing (19) outer ring is connected with sensor stand (18); One end of sensor probe (17) is contained on the sensor stand (18); Sensor probe (17) passes annular seal space end cap (14) and is installed in probe protective sleeve (16), and sensor probe (17) afterbody connects sensor aftertreatment and display part (21) as a result, adopts clearance fit between sensor stand (18) and the annular seal space end cap (14).
2. a kind of closed displacement transducer caliberating device according to claim 1, it is characterized in that: trip bolt is directly adopted in described motor coupling part (4), or uses shaft coupling.
3. a kind of closed displacement transducer caliberating device according to claim 1, it is characterized in that: described ball bearing group (7) is made up of two angular contact balls or deep groove ball bearing.
4. a kind of closed displacement transducer caliberating device according to claim 1 is characterized in that: described seal chamber (11) adopts integral sealing chamber or closed annular seal space.
5. a kind of closed displacement transducer caliberating device according to claim 1 is characterized in that: adopt interference fit to be connected or to connect with glue between the measuring staff of described differential head (22) and location fixing sleeve (20).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110282770 CN102374846B (en) | 2011-09-21 | 2011-09-21 | Closed type displacement sensor calibrating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110282770 CN102374846B (en) | 2011-09-21 | 2011-09-21 | Closed type displacement sensor calibrating device |
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| CN102374846A true CN102374846A (en) | 2012-03-14 |
| CN102374846B CN102374846B (en) | 2013-06-12 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944177A (en) * | 2012-11-15 | 2013-02-27 | 西安交通大学 | Method for calibrating and replacing laser or displacement sensor in long-term measurement system |
| CN103697819A (en) * | 2013-12-12 | 2014-04-02 | 中国科学院长春光学精密机械与物理研究所 | Calibration device of micro-displacement sensor |
| CN103697818A (en) * | 2013-12-12 | 2014-04-02 | 中国科学院长春光学精密机械与物理研究所 | Single-degree-of-freedom flexible fine adjustment mechanism-based micro-displacement sensor calibration device |
| CN104048610A (en) * | 2014-06-26 | 2014-09-17 | 中国地震局地质研究所 | Method and system for field application and calibration of reflection fiber optic displacement sensor |
| CN105737741A (en) * | 2016-02-25 | 2016-07-06 | 上海大学 | Integrated interference type micro-displacement optical fiber sensor, calibration device thereof and calibration method thereof |
| CN107356188A (en) * | 2017-06-27 | 2017-11-17 | 北京航空航天大学 | A kind of displacement transducer marking apparatus |
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| US4872354A (en) * | 1987-07-30 | 1989-10-10 | The United States Of America As Represented By The Secretary Of The Air Force | Hollow shaft measurement device |
| CN1825083A (en) * | 2006-03-27 | 2006-08-30 | 南京化工职业技术学院 | Multi-parameter controllable high-rotating speed mechanical sealing performance tester |
| CN201622172U (en) * | 2010-03-01 | 2010-11-03 | 洛阳轴研科技股份有限公司 | Detector used for detecting rotation or separation of outer ring of spherical plain bearing in assorted casing |
-
2011
- 2011-09-21 CN CN 201110282770 patent/CN102374846B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4872354A (en) * | 1987-07-30 | 1989-10-10 | The United States Of America As Represented By The Secretary Of The Air Force | Hollow shaft measurement device |
| CN1825083A (en) * | 2006-03-27 | 2006-08-30 | 南京化工职业技术学院 | Multi-parameter controllable high-rotating speed mechanical sealing performance tester |
| CN201622172U (en) * | 2010-03-01 | 2010-11-03 | 洛阳轴研科技股份有限公司 | Detector used for detecting rotation or separation of outer ring of spherical plain bearing in assorted casing |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944177A (en) * | 2012-11-15 | 2013-02-27 | 西安交通大学 | Method for calibrating and replacing laser or displacement sensor in long-term measurement system |
| CN103697819A (en) * | 2013-12-12 | 2014-04-02 | 中国科学院长春光学精密机械与物理研究所 | Calibration device of micro-displacement sensor |
| CN103697818A (en) * | 2013-12-12 | 2014-04-02 | 中国科学院长春光学精密机械与物理研究所 | Single-degree-of-freedom flexible fine adjustment mechanism-based micro-displacement sensor calibration device |
| CN103697818B (en) * | 2013-12-12 | 2016-07-27 | 中国科学院长春光学精密机械与物理研究所 | Calibration device of micro-displacement sensor based on single-freedom and flexible fine motion guiding mechanism |
| CN103697819B (en) * | 2013-12-12 | 2016-08-17 | 中国科学院长春光学精密机械与物理研究所 | A kind of calibration device of micro-displacement sensor |
| CN104048610A (en) * | 2014-06-26 | 2014-09-17 | 中国地震局地质研究所 | Method and system for field application and calibration of reflection fiber optic displacement sensor |
| CN105737741A (en) * | 2016-02-25 | 2016-07-06 | 上海大学 | Integrated interference type micro-displacement optical fiber sensor, calibration device thereof and calibration method thereof |
| CN105737741B (en) * | 2016-02-25 | 2018-08-07 | 上海大学 | Integrated interference-type micro-displacement fibre optical sensor and its caliberating device and scaling method |
| CN107356188A (en) * | 2017-06-27 | 2017-11-17 | 北京航空航天大学 | A kind of displacement transducer marking apparatus |
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| CN102374846B (en) | 2013-06-12 |
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Application publication date: 20120314 Assignee: DALIAN HONGZE PUMPS LTD. Assignor: TSINGHUA University Contract record no.: X2023210000036 Denomination of invention: A closed displacement sensor calibration device Granted publication date: 20130612 License type: Common License Record date: 20230518 |