Laser centralizer for x-ray emitter

 

The invention relates to non-destructive testing using x-ray radiation and can be used to control materials and products radiation method in various engineering industries. The centralizer includes a housing located therein a laser with two-sided output radiation, two of the reflector, means for indicating the focal length in the form of a pointer with a scale attached to the body of the centralizer, the two cylindrical lenses mounted on the axis of the laser radiation across each output beam, the first between one of the end faces of the laser oscillator and the first reflector, the second between the second end of the laser emitter and the second reflector, two beam splitter mounted on the optical axis of the laser, the first of which is located between the laser and the first cylindrical lens and the second between the first reflector and the first cylindrical lens, a rectangular prism of total internal reflection, located outside the optical axis of the laser at the position at which it hypotenusal face parallel to this axis, and optical interfacing the first and second splitters, and a third cylindrical lens with optical properties identical to the first and second cylinder the dummy it flat divergent light beam orthogonal to the plane of the beam, formed by the first cylindrical lens and the optical axis formed by the intersection of the flat beam coaxial to the axis of the x-ray beam. The increase of operational parameters of the device. 1 Il.

The invention relates to non-destructive testing using x-ray emitter and can be used to control materials and products radiation method in various engineering industries.

Known laser centralizer for x-ray emitter containing body located therein a laser with two-sided output radiation, the optical axis of which is parallel to the longitudinal axis of the x-ray emitter, two reflector, the first of which was installed at the intersection of the optical axis of the laser with the axis of the x-ray beam, the second set on the optical axis of the emitter output of the laser outside the projection on it of the output window of the x-ray emitter with the possibility of rotation around the axis perpendicular to the plane defined by the optical axis of the output laser radiation with the axis of the x-ray beam, and means for indicating the focal length in the form of a pointer with a scale, fixed n is oberek each output beam with the possibility of rotation around the axis of the laser beam, the first is between one of the end faces of the laser oscillator and the first reflector, the second between the second end of the laser emitter and the second reflector, and their focus is selected from the formula:

f=h/tg,

where h is the radius of the laser beam;

- the angle of radiation of the x-ray beam [1].

The object image formed two glowing parallel strips, one of which is stationary, and the second moves the object to match with the image of the stationary strip, and at this point on the scale is read the distance to the object. When turning one of the cylindrical lenses at 90° image strips on the object are orthogonal, and their intersection point on the object coincides with the axis of the x-ray beam.

The disadvantage of this device is the separation in time of the operation of the pointing axis of the x-ray beam to the area of monitoring and measuring the distance to the object, as well as the complexity of the design of the device through the use of mechanisms of rotation of the cylindrical lenses. In addition, when the change of the distance to the object, the cross formed by the intersection of orthogonal strips, becomes asymmetric, which further worsens exploitatio atora two additional beam splitter, one of which is installed on the optical axis of the laser between the laser and the first cylindrical lens, and the second on the axis of the laser between the first reflector and the first cylindrical lens, a rectangular prism of total internal reflection, installed off-axis laser beam and optically connecting the laser beams passing through the first and second splitters, and a third cylindrical lens between the second identical to the first two lenses clamp the beam splitter and prism and installed in the position in which the plane formed by its flat diverging beam orthogonal to the first cylindrical lens and forms a crossing with him on the surface of the object luminous cross, the center of which coincides with the point of intersection of the object and the axis of the x-ray beam.

The invention is illustrated by the drawing, which shows a General diagram of the device and view the field of view when measuring the distance to the object.

Laser centralizer contains the x-ray radiator 1, to which is attached the housing 2 located therein by laser 3 with bilateral output radiation, the optical axis of the output radiation which is parallel to the longitudinal axis of the x-ray emitter, two reflector 4 and 5, the first (4) of koto emitter (falling on the controlled surface (6) can be rotated around an axis, perpendicular to the plane defined by the optical axis 8 of the output radiation of the laser with the axis 7 of the x-ray beam in the angle range 25-65°, and the second (5) mounted to rotate around an axis parallel to the axis of rotation of the first reflector on the optical axis 9 of the output radiation outside the projection on it of the output window of the x-ray emitter, means for indicating the focal length as a pointer 10 scale 11, fixed to the body 2 of the centralizer associated with the second reflector 5, and a means of interrupting the beam from the second reflector 5 made in the form of hinged shutters, installed before or after the second reflector.

The centralizer has two cylindrical lenses 12 and 13, which are mounted on the optical axis of the laser beam, the first (12) is installed between the end face of the laser and the reflector 4 so that the object 6 is formed a vertical luminescent band, perpendicular to the plane formed by the intersection of the optical axis 7 of the x-ray emitter with the axis 8 of the laser, and the second (13) is installed between the other end face of the laser and the reflector 5 so that the object 6 control formed the second luminous strip.

Lenses 12 and 13 are structurally designed with the possibility of rotation in such a way is that the angular size of the luminous determined the size of the irradiation object 6 x-rays.

The focus should be calculated according to the formula f=h/tgwhere f is the focus of the cylindrical lens; h is the radius of the laser beam;- the angle of radiation of the x-ray beam.

Between the laser 3 and the first cylindrical lens 12 on the axis of the laser is set to the first beam splitter 15, which reflects part of the radiation on the rectangular prism total internal reflection 17, mounted off-axis laser in the position in which it hypothetica face parallel to the optical axis of the laser. Between the first reflector 4 and the first cylindrical lens 12 on the axis of the laser has a second beam splitter 14, and between him and the prism 17 is a third cylindrical lens 16 with optical properties identical to the first and second lenses 12 and 13. The lens 16 is set so that the plane formed by the beam orthogonal to the plane of the same beam formed by the lens 12 and the optical axis is determined by the intersection of these beams, coaxial surface axis of the x-ray beam of the object 6 are observed stationary cross formed by the intersection of the beams formed by the lenses 12 and 16, the center of which coincides with the intersection point of the object axis of the x-ray beam, and pedigreedatabase cross (Fig. 1,b). During the rotation of the reflector 5 at the time of combination of movable and fixed strokes from the scale 11 reads the value of the distance to the object 6.

The device operates as follows. The operator moves the center of the crosshair laser emitter at the center of the control zone, then combines the movable and stationary strokes rotation of the reflector 5 and at the time of their matches reads the value of the distance to the object.

Claims

Laser centralizer for x-ray emitter containing body located therein a laser with two-sided output radiation, the optical axis of which is parallel to the longitudinal axis of the x-ray emitter, two reflector, the first of which was installed at the intersection of the axis of the laser with the axis of the x-ray beam, and the second is associated with the housing and mounted on the optical axis of the output laser radiation outside the projection on it of the output window of the x-ray emitter with the possibility of rotation around the axis perpendicular to the plane defined by the optical axis of the output laser radiation with the axis of the x-ray beam, and means for indicating the focal length in the form of a pointer with a scale, fixed to the body of the centralizer, equipped with two cylindrical, the ends of the laser oscillator and the first reflector, the second is between the second end of the laser emitter and the second reflector, and their focus is selected from a ratio

f=h/tg,

where h is the radius of the laser beam;

- the angle of radiation of the x-ray beam,

the cylindrical lens mounted for rotation around the axis of the laser beam, characterized in that it further provided with two splitters installed on the optical axis of the laser, the first of which is located between the laser and the first cylindrical lens and the second between the first reflector and the first cylindrical lens, a rectangular prism of total internal reflection, located outside the optical axis of the laser at the position at which it hypotenusal face parallel to this axis, and optical interfacing the first and second splitters, and a third cylindrical lens with optical properties identical to the first and second cylindrical lenses, installed between the second beam splitter and prism in the position in which the plane formed by its flat divergent light beam orthogonal to the plane of the beam formed by the first cylindrical lens and the optical axis formed by the intersection of this

 

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