Running surface wrap and inhomogeneity detector

FIELD: physics.

SUBSTANCE: running surface wrap and inhomogeneity detector includes sensor designed as fibre-optic measuring probe with radiating and receiving light guides and electronic module. Fibre-optic measuring probe represents two beams of radiating and receiving light guides by randomised optical scheme covered with the third beam of receiving light guides thus ensuring coaxial optical scheme, with working beam ends lying in one plane. Working beam ends are movable and fixed relative to the controlled surface. Additionally receiving light guides of beams are connected through optoelectronic converters to the adder with output connected to the indicator, while radiating light guides of beam are connected to pulse generator.

EFFECT: higher detection accuracy of various wraps and inhomogeneities of controlled surface.

4 dwg

 

The invention relates to the field of measurement technology, in particular for monitoring irregularities and inhomogeneities moving surface, and can be used to control the beating of a rotating shaft or rotor.

A device for measuring the error surfaces in the form of a fiber-optic probe containing the emitting and receiving optical fibers grouped in a bunch on the mosaic scheme (patent No. 1778521 on CL G01B 11/30 from 30.11.1992,).

The disadvantage of this device is the relatively low sensitivity of the probe, and, as a consequence, reducing the accuracy of the control error of the moving surface.

The closest technical solution, the set of essential features for a device to control the error of the moving surface containing the sensor, made in the form of fiber-optic probe with emitting and receiving optical fibers grouped in a randomized (mosaic) scheme, and an electronic control unit (Avilov I.S. Contactless control end play of a magnetic disk. // Machines and tools, 1988, No. 3).

The disadvantage of this device is the relatively low accuracy of the measurement error of the moving surface, and the inability to control the beating of the axis of the rotating shaft according to CNAME types of irregularities (heterogeneity patterns, waviness, eccentricity, cut, wear, and others).

Task to be solved by the claimed invention is directed, is to improve the accuracy of control for different types of irregularities and inhomogeneities of the surface.

The problem is solved due to the fact that the device for monitoring irregularities and inhomogeneities moving surface containing the sensor, made in the form of fiber-optic probe with emitting and receiving optical fibers, and an electronic unit, a fiber optic probe is made in the form of two beams emitting and receiving optical fibers in a randomized optical circuit covered by the third beam receiving optical fibers, forming a coaxial optical system with the working ends of the beams lying in the same plane, and the working ends of the beams are made can be moved and fixed relative to the test surface, while the receiving fiber bundles via opto transducers connected to the adder, the output of which is connected to the indicator and emitting optical fiber bundle connected to the pulse generator.

Figure 1 shows the General view of the device for monitoring irregularities and inhomogeneities moving surface.

Figure 2 - cross section A-a in figure 1.

Figure 3 - cross section B-B in figure 1.

<> Figure 4 shows the block diagram of the device for controlling the error of the moving surface.

The device includes a sensor, in the form of beam 1 and beam 2 emitting 3 and step 4 of optical fibers grouped in a randomized (mosaic) optical circuit (figure 3). The beam 5 is covered by the beam receiving optical fibers 6, forming a coaxial optical system with the working ends 7 and 8 lie in the same plane. The working ends of the beams 5 and 6 are located in the sleeve 9 can be moved and fixed relative to the test surface 10.

The device operates as follows.

To the surface of the fiber-optic probe is installed at a certain distance "h" from the surface. The choice of this distance is selected depending on what kind of irregularities requires control.

When rotating or moving surface for radiating the light fed to the optical signal generated by the pulse generator 11, which is reflected from the test surface, illuminates the receiving ends of the optical fibers 2 and 6. The area exposed surfaces increase with increasing distance "h" to the test surface. Reflected from the surface of the signals through the optoelectronic transducers 12 are received at the adder 13 and further indica is PR 14, showing error value moving surface.

When eccentricity, waviness, wear, eccentricity, cut etc. are defined for each type of surface condition of the transfer function of the fiber-optic probe, which represents the dependence of the output signal "U" from "h", and the execution of a probe in the form of two beams emitting and receiving optical fibers, covered by the third beam receiving optical fibers, allows the change of the distance of the working ends of the beams to the measured surface to improve the control accuracy due to the use of plots of the transfer function is close to linear, with a wide range of varieties of state-controlled surfaces.

Device for monitoring irregularities and inhomogeneities moving surface containing the sensor, made in the form of fiber-optic probe with emitting and receiving optical fibers, and an electronic unit, wherein the fiber optic probe is made in the form of two beams emitting and receiving optical fibers in a randomized optical circuit covered by the third beam receiving optical fibers, forming a coaxial optical system with the working ends of the beams lying in the same plane, and the working ends of the beams made with the aromasine and fixation relative to the test surface, the adoptive light beams through optoelectronic converters connected to the adder, the output of which is connected to the indicator and emitting optical fiber bundle connected to the pulse generator.



 

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