CN102337881B - Assembly method of inertial measurement component in continuous inclinometer - Google Patents
Assembly method of inertial measurement component in continuous inclinometer Download PDFInfo
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- CN102337881B CN102337881B CN201110266830.5A CN201110266830A CN102337881B CN 102337881 B CN102337881 B CN 102337881B CN 201110266830 A CN201110266830 A CN 201110266830A CN 102337881 B CN102337881 B CN 102337881B
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Abstract
The invention belongs to the field of oil logging, and relates to an assembly method of an inertial measurement component in a continuous inclinometer of a key structural component of a logging instrument. In the structure, two flexible gyroscopes, three accelerometers, one rotary transformer and one direct-current torque motor are reasonably combined together, part of the flexible gyroscopes and the accelerometers are arranged on a sensor fixedly-coupling framework, part of the gyroscopes and the accelerometers are arranged on a sensor rotating framework, the load of a rotating mechanism is reduced, and the control stability is improved; the interference of vibration and temperature fields between gyroscope sensors is isolated, and the stability of sensor signals is improved; and the size of the whole instrument is reduced until the diameter is 42mm, the structure reaches the highest level in China, and special outside diameter requirements of oil instrumentation are satisfied.
Description
Technical field
The invention belongs to oil well logging field, relate to the assemble method of inertial measurement cluster in a kind of continuous inclinometer of logger key structure assembly.
Background technology
Gyrolevel is a kind of orientation inclinometer device of extensive use in current oil well logging field.This kind of instrument is the inertial measurement system based on inertial navigation technology, is a kind of any external equipment that do not rely on, complete autonomous measuring apparatus in real time and fast, and not disturbed by external magnetic field.As shown in Figure 2, the mounting method that existing inclinometer is conventional is that Z-direction accelerometer 20, X-direction accelerometer 21, Y-direction accelerometer 22 and Z-direction flexible gyroscope 23, XY are all installed on inertial measurement cluster sensor transposition framework 28 to flexible gyroscope 24; Inertial measurement cluster sensor transposition framework 28 two ends are carried out precision with rotary transformer 19 with direct current torque motor 25 by rotary transformer turning cylinder 29 respectively with motor rotation axis 26 and are connected; Finally, in its external mounting, transposition supporting outside framework 27, forms complete inertial measurement cluster.Although this kind of method be simple in structure, be easy to assembling,, can cause indexing mechanism load excessive, anti shock and vibration ability during continuous measurement; Vibration between gyrosensor and thermal field are disturbed and are difficult to isolation, and sensor signal stability is influenced; The outside dimension of whole instrument is subject to sensor shape limitation to be difficult to do little, can not finely meet well measurement applied environment.
Summary of the invention
The object of the invention is: propose a kind of rigidity of structure good, sensor signal is stable, and dwindles a kind of assemble method for continuous inclinometer inertial measurement cluster of whole instrument appearance and size.
Technical solution of the present invention is:
(a) Z-direction flexible gyroscope is installed on the installed surface that inertial measurement cluster sensor connects firmly framework, Z-direction accelerometer is installed on another installed surface that inertial measurement cluster sensor connects firmly framework, verticality between two installed surfaces is less than 0.02mm, the axiality that the gyroaxis of Z-direction flexible gyroscope and inertial measurement cluster sensor connect firmly gimbal axis is less than Φ 0.05mm, to meet inclinometer to each between centers orthogonality requirement of inertial measurement cluster sensor;
(b) X, Y-direction accelerometer and XY are installed on three installed surfaces of inertial measurement cluster sensor transposition framework to flexible gyroscope quadrature, verticality between three installed surfaces of inertial measurement cluster sensor is less than 0.02mm, XY is less than 0.02mm to the verticality of flexible gyroscope installed surface and inertial measurement cluster sensor transposition gimbal axis, to meet the orthogonality requirement of inclinometer to each between centers of inertial measurement cluster sensor;
(c) one end of inertial measurement cluster sensor transposition framework joins by rotary transformer turning cylinder and rotary transformer, the axiality of rotary transformer turning cylinder and inertial measurement cluster sensor transposition framework is less than Φ 0.02mm, the other end of inertial measurement cluster sensor transposition framework is by motor rotation axis and direct current torque motor, the axiality of motor rotation axis and inertial measurement cluster sensor transposition framework is less than Φ 0.02mm, inertial measurement cluster sensor transposition framework is placed in transposition supporting outside framework, rotary transformer by inertial measurement cluster sensor transposition framework two ends is connected with transposition supporting outside framework with direct current torque motor.
(d) inertial measurement cluster sensor connects firmly framework and transposition supporting outside framework and fits together by abutting joint face, and inertial measurement cluster sensor connects firmly the axiality that gimbal axis and transposition support outside framework axle and is less than Φ 0.02mm.Described inertial measurement cluster sensor connects firmly one end that framework and transposition supporting outside framework is equipped with rotary transformer and assembles.
Advantage and beneficial effect that the present invention has are, this structure is reasonably combined and installed together 2 flexible gyroscopes, 3 accelerometers, 1 rotary transformer and 1 direct current torque motor, by flexible gyroscope and accelerometer, part is installed on sensor and connects firmly framework, part is installed on sensor transposition framework, reduce indexing mechanism load, improved control stability; Disturb the vibration and the thermal field that have isolated between gyrosensor, has improved the stability of sensor signal; The appearance and size of having dwindled whole instrument reaches Φ 42mm, reaches domestic highest level, has met the special outside dimension requirement of oil instrument.
Accompanying drawing explanation
Fig. 1 is inertial measurement cluster structure of the present invention and confined state schematic diagram;
Fig. 2 is the existing structure of inertial measurement cluster and confined state schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is elaborated.The present invention includes 2 flexible gyroscopes, 3 accelerometers, 1 rotary transformer, 1 direct current torque motor and 3 mechanical frameworks.By rotary transformer, direct current torque motor, inertial measurement cluster sensor transposition framework and transposition supporting outside framework, form and stablize indexing mechanism; In inertial measurement cluster sensor transposition framework, X, Y-direction accelerometer and XY are installed to flexible gyroscope, meet the structure technology requirement of automatically north seeking; Z-direction flexible gyroscope and Z-direction accelerometer are installed in inertial measurement cluster sensor connects firmly framework, are formed and connect firmly framework; Connect firmly after framework accurately docks with stable indexing mechanism and realize complete inertial measurement cluster structure, meet the structure technology requirement of continuous measurement.Its mounting method is,
(1) Z-direction flexible gyroscope 1 is installed on the Z-direction gyro installation face 2 that inertial measurement cluster sensor connects firmly framework 18, Z-direction accelerometer 3 is installed on the Z-direction accelerometer installed surface 4 that inertial measurement cluster sensor connects firmly framework 18, verticality between two installed surfaces is less than 0.02mm, the axiality that the gyroaxis of Z-direction flexible gyroscope 1 and inertial measurement cluster sensor connect firmly gimbal axis is less than Φ 0.05mm, to meet inclinometer to each between centers orthogonality requirement of inertial measurement cluster sensor;
(2) X-direction accelerometer 6 is installed on the X-direction accelerometer installed surface 15 of inertial measurement cluster sensor transposition framework 14, Y-direction accelerometer 7 is installed on the Y-direction accelerometer installed surface 12 of inertial measurement cluster sensor transposition framework 14, the XY that XY is installed on to inertial measurement cluster sensor transposition framework 14 to flexible gyroscope 8 is on flexible gyroscope installed surface 11, verticality between three installed surfaces of inertial measurement cluster sensor is less than 0.02mm, XY is less than 0.02mm to flexible gyroscope installed surface 11 and the verticality of inertial measurement cluster sensor transposition gimbal axis, to meet the orthogonality requirement of inclinometer to each between centers of inertial measurement cluster sensor,
(3) one end of inertial measurement cluster sensor transposition framework 14 joins by rotary transformer turning cylinder 16 and rotary transformer 5, rotary transformer turning cylinder 16 is less than Φ 0.02mm with the axiality of inertial measurement cluster sensor transposition gimbal axis, the other end of inertial measurement cluster sensor transposition framework 14 is connected with direct current torque motor 9 by motor rotation axis 10, and motor rotation axis 10 is less than Φ 0.02mm with the axiality of inertial measurement cluster sensor transposition gimbal axis; The high requirement of axiality is conducive to reduce relevant with g error and two-position of demarcating of gyro and seeks northern error, thereby improves Instrument measuring precision; Inertial measurement cluster sensor transposition framework 14 is placed in transposition supporting outside framework 13, and the rotary transformer 5 by inertial measurement cluster sensor transposition framework 14 two ends is connected with direct current torque motor 9 and transposition supporting outside framework 13; Whole indexing mechanism has reduced the weight of Z-direction flexible gyroscope, Z-direction accelerometer and part frame, has improved the shock resistance of instrument continuous measurement, the ability of vibration.
(4) inertial measurement cluster sensor connects firmly framework 18 and fits together by abutting joint face 17 with transposition supporting outside framework 13, and inertial measurement cluster sensor connects firmly the axiality that gimbal axis and transposition support outside framework axle and is less than Φ 0.02mm; The high requirement of axiality is conducive to reduce the initial error angle of whole instrument, thereby provides more accurate, reliable attitude parameter for oil well trajectory measurement.
Claims (2)
1. for an assemble method for continuous inclinometer inertial measurement cluster, it is characterized in that,
(a) Z-direction flexible gyroscope (1) is installed on the Z-direction gyro installation face (2) that inertial measurement cluster sensor connects firmly framework (18), Z-direction accelerometer (3) is installed on the Z-direction accelerometer installed surface (4) that inertial measurement cluster sensor connects firmly framework (18), verticality between two installed surfaces is less than 0.02mm, and the axiality that the gyroaxis of Z-direction flexible gyroscope (1) and inertial measurement cluster sensor connect firmly gimbal axis is less than Φ 0.05mm;
(b) X-direction accelerometer (6) is installed on the X-direction accelerometer installed surface (15) of inertial measurement cluster sensor transposition framework (14), Y-direction accelerometer (7) is installed on the Y-direction accelerometer installed surface (12) of inertial measurement cluster sensor transposition framework (14), XY is installed on to XY from inertial measurement cluster sensor transposition framework (14) to flexible gyroscope (8) is on flexible gyroscope installed surface (11), verticality between three installed surfaces of inertial measurement cluster sensor is less than 0.02mm, XY is less than 0.02mm to flexible gyroscope installed surface (11) and the verticality of inertial measurement cluster sensor transposition gimbal axis,
(c) one end of inertial measurement cluster sensor transposition framework (14) joins by rotary transformer turning cylinder (16) and rotary transformer (5), rotary transformer turning cylinder (16) is less than Φ 0.02mm with the axiality of inertial measurement cluster sensor transposition gimbal axis, the other end of inertial measurement cluster sensor transposition framework (14) is connected with direct current torque motor (9) by motor rotation axis (10), motor rotation axis (10) is less than Φ 0.02mm with the axiality of inertial measurement cluster sensor transposition gimbal axis, inertial measurement cluster sensor transposition framework (14) is placed in transposition supporting outside framework (13), rotary transformer (5) by inertial measurement cluster sensor transposition framework (14) two ends is connected with transposition supporting outside framework (13) with direct current torque motor (9).
(d) inertial measurement cluster sensor connects firmly framework (18) and transposition supporting outside framework (13) and fits together by abutting joint face (17), and inertial measurement cluster sensor connects firmly gimbal axis and transposition and supports the axiality of outside framework axle and be less than Φ 0.02mm.
2. a kind of assemble method for continuous inclinometer inertial measurement cluster according to claim 1, is characterized in that, described inertial measurement cluster sensor connects firmly one end that framework and transposition supporting outside framework is equipped with rotary transformer and assembles.
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| CN1743643A (en) * | 2005-10-09 | 2006-03-08 | 北京航空航天大学 | Mechanical frame for optical-fiber gyro inclinometer for oil well |
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| CN101634221A (en) * | 2008-07-23 | 2010-01-27 | 航天科工惯性技术有限公司 | Method for extracting angular rate by accelerometers and clinometer adopting same |
| CN101876244A (en) * | 2010-06-03 | 2010-11-03 | 西安思坦仪器股份有限公司 | Inertia measuring unit and continuous inclinometer for dynamically tuned gyroscope |
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- 2011-09-01 CN CN201110266830.5A patent/CN102337881B/en active Active
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| US4192077A (en) * | 1978-07-17 | 1980-03-11 | Applied Technologies Associates | Survey apparatus and method employing rate-of-turn and free gyroscopes |
| US5330364A (en) * | 1992-01-31 | 1994-07-19 | Amoco Corporation | Electrical connector for well surveying tool |
| CN2570734Y (en) * | 2002-09-28 | 2003-09-03 | 大庆油田有限责任公司 | Frame gyroscope and flexible gyroscope combination measuring azimuth finder |
| CN1743643A (en) * | 2005-10-09 | 2006-03-08 | 北京航空航天大学 | Mechanical frame for optical-fiber gyro inclinometer for oil well |
| CN1908368A (en) * | 2006-08-23 | 2007-02-07 | 北京航空航天大学 | Declinator used inertia measurement set integration device |
| CN101265804A (en) * | 2008-05-06 | 2008-09-17 | 上海神开石油化工装备股份有限公司 | Well drilling high precision gradient meter sensor perpendicular installation error compensation process |
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