A laser image X-ray relative density testing device

Abstract

The present invention provides a laser image X-ray relative density testing device, comprising a horizontal bracket, a reflector, a laser, a laser height sensor, an X-ray tube and an X-ray detector; an X-ray tube is installed above one end of the horizontal bracket, a laser height sensor is fixed obliquely below the other end, a reflector is installed directly below the X-ray tube, a laser is fixed below the horizontal bracket at the horizontal incident end of the reflector, and an X-ray detector is arranged directly below the X-ray tube; the laser emitted by the laser is reflected by the reflector and coincides with the X-ray emitted by the X-ray tube, and is vertically irradiated onto the detection window of the X-ray detector at the same time, and the laser height sensor is connected to the X-ray detector through a signal line to synchronously collect information. The present invention spatially combines the laser light path and the X-ray light path, and the scanner simultaneously generates height data and transmits energy data at the same position, so as to achieve the purpose of simultaneous detection at the same position.

Description

Technical Field

[0001] The invention mainly relates to the field of scanning devices, and in particular to a laser image X-ray relative density testing device. Background Art

[0002] When performing non-contact relative density testing on a sample, X-rays are often used to penetrate the object to obtain transmission energy data. Laser scanning is used to obtain height data, and then the relative density of the sample is calculated based on the energy data and height data using the Lambert-Beer law.

[0003] Since common sample blocks are irregular in shape and the transmitted energy data and height data are measured separately, it is difficult to ensure that the two measurements are made at the same position of the block, which causes errors in subsequent analysis.

[0004] The Chinese invention patent has been published, application number CN201910667122.9, patent name: a high-precision laser ray synchronous measurement integrated machine, application date: 2019-07-23, the present invention relates to a high-precision laser ray synchronous measurement integrated machine, including an upper aluminum box and a lower aluminum box; an X-ray transmitter is arranged inside the upper aluminum box; an X-ray receiver is arranged inside the lower aluminum box; an upper laser test head is arranged outside the upper aluminum box, and the upper laser test head includes an upper laser source and a first photodetector; a lower laser test head is arranged outside the lower aluminum box, and the lower laser test head includes a lower laser source and a second photodetector; the thickness measuring bracket is processed after welding as a whole; and a control system is arranged on the outside of the thickness measuring bracket. An upper linear motor and a lower linear motor are arranged inside the thickness measuring bracket; the linear motor mounting surface is processed by side milling, and the upper linear motor and the lower linear motor are driven synchronously. The present invention adopts an integrated non-contact synchronous measurement of the film surface density and thickness, and the probe is repeatedly positioned at high speed and precision, and the measurement result is more accurate. Summary of the invention

[0005] In view of the above-mentioned defects of the prior art, the present invention provides a laser image X-ray relative density testing device, comprising a horizontal support 1, a reflector 6, a laser 3, a laser height sensor 2, an X-ray tube 4 and an X-ray detector 8;

[0006] An X-ray tube 4 is installed above one end of the horizontal bracket 1, a laser height sensor 2 is fixed obliquely below the other end, a reflector 6 is installed directly below the X-ray tube 4, a laser 3 is fixed below the horizontal bracket 1 at the horizontal incident end of the reflector 6, and an X-ray detector 8 is arranged directly below the X-ray tube 4;

[0007] The laser emitted by the laser 3 is reflected by the reflector 6 and overlaps with the X-ray emitted by the X-ray tube 4, and is simultaneously irradiated vertically onto the detection window 7 of the X-ray detector 8. The laser height sensor 2 and the X-ray detector 8 are connected via a signal line to synchronously collect information.

[0008] Preferably, an X-ray tube protection box 5 is provided outside the X-ray tube 4 , and a reflector protection box 9 is provided outside the reflector 6 . The reflector protection box 9 is located at the emission end of the laser 3 and is provided with an S light hole 10 .

[0009] Preferably, the spacing between the reflector protection boxes 9 gradually increases from top to bottom, and the reflector 6 is made of single-sided aluminum plating.

[0010] Preferably, a pair of vertical brackets 11 perpendicular to the horizontal bracket 1 are installed between the horizontal bracket 1 and the X-ray detector 8, and a horizontal connecting plate 12 is connected between the pair of vertical brackets 11, and a mounting hole for mounting the X-ray tube 4 is vertically provided in the horizontal connecting plate 12.

[0011] Preferably, the horizontal support 1, the horizontal connecting plate 12 and the vertical support 11 are made of aluminum alloy.

[0012] Preferably, the X-ray tube 4, the laser height sensor 2, the X-ray tube 4, and the reflector 6 are all connected to the horizontal bracket 1 by bolts.

[0013] Preferably, the laser light emitted by the laser 3 serves as a marker for the irradiation position of the X-rays emitted by the X-ray tube 4 .

[0014] The beneficial effects of the present invention are as follows: the laser light path and the X-ray light path are spatially combined, so that the scanner generates height data and transmitted energy data at the same position at the same time, thereby achieving the purpose of simultaneous detection at the same position, and the installation is convenient and the reliability is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 It is the internal structure diagram of the present invention;

[0017] In the figure,

[0018] 1. Horizontal bracket; 2. Laser height sensor; 3. Laser; 4. X-ray tube; 5. X-ray tube protection box; 6. Reflector; 7. Detection window; 8. X-ray detector; 9. Reflector protection box; 10. S light hole; 11. Vertical bracket; 12. Horizontal connecting plate. DETAILED DESCRIPTION

[0019] In order to make the technical solution of the present invention better understood by the technical personnel in the field, and to make the above-mentioned features, purposes and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with the embodiments. The embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0020] like Figure 1-2 As shown, the present invention includes: a horizontal support 1, a reflector 6, a laser 3, a laser height sensor 2, an X-ray tube 4 and an X-ray detector 8;

[0021] An X-ray tube 4 is installed above one end of the horizontal bracket 1, a laser height sensor 2 is fixed obliquely below the other end, a reflector 6 is installed directly below the X-ray tube 4, a laser 3 is fixed below the horizontal bracket 1 at the horizontal incident end of the reflector 6, and an X-ray detector 8 is arranged directly below the X-ray tube 4;

[0022] The laser emitted by the laser 3 is reflected by the reflector 6 and overlaps with the X-ray emitted by the X-ray tube 4, and is simultaneously irradiated vertically onto the detection window 7 of the X-ray detector 8. The laser height sensor 2 and the X-ray detector 8 are connected via a signal line to synchronously collect information.

[0023] In use, the following process steps are included:

[0024] 1. When the detection starts, start the X-ray tube 4 and the X-ray detector 8, start the laser 3 and the laser height sensor 2;

[0025] 2. The laser light emitted by the laser 3 passes through the reflector 6 and coincides with the X-ray light from the X-ray tube 4 passing through the reflector 6, and the sample block passing over the detection window 7 of the X-ray detector 8 is measured;

[0026] 3. At this time, the laser height sensor 2 and the X-ray detector 8 simultaneously receive the height signal and energy signal of the same position of the sample block to complete the signal collection work.

[0027] In this embodiment, preferably, the X-ray tube 4 is externally irradiated with an X-ray tube protection box 5, the reflector 6 is covered with a reflector protection box 9, and the reflector protection box 9 is located at the emission end of the laser 3 and is provided with an S light hole 10.

[0028] The above structure, the X-ray tube protection box 5 and the reflector protection box 9 are both beneficial to protecting the X-ray tube 4 and the reflector 6 body, and are beneficial to the transmission of light and reduce the probability of light leakage.

[0029] In this embodiment, preferably, the spacing between the reflector protection boxes 9 gradually increases from top to bottom, and the reflector 6 is made of single-sided aluminum plating.

[0030] With the above structure, the reflector protection box 9 is designed to expand the range at the bottom so that the laser and X-rays overlap in the detection area. In addition, the aluminum-plated reflector 6 ensures high transmittance of X-rays and high reflectivity of lasers.

[0031] In this embodiment, preferably, a pair of vertical brackets 11 perpendicular to the horizontal bracket 1 are installed between the horizontal bracket 1 and the X-ray detector 8, and a horizontal connecting plate 12 is connected between the pair of vertical brackets 11, and a mounting hole for mounting the X-ray tube 4 is vertically provided in the horizontal connecting plate 12.

[0032] The above structure is arranged, and a vertical bracket 11 is arranged to play a supporting role between the horizontal bracket 1 and the X-ray detector 8 .

[0033] In this embodiment, preferably, the horizontal support 1, the horizontal connecting plate 12 and the vertical support 11 are made of aluminum alloy.

[0034] The above structure, the horizontal support 1, the horizontal connecting plate 12 and the vertical support 11 made of aluminum alloy, can reduce the vibration effect when used in industrial sites.

[0035] In this embodiment, preferably, the X-ray tube 4, the laser height sensor 2, the X-ray tube 4, and the reflector 6 are all connected to the horizontal bracket 1 by bolts.

[0036] With the above structure, the horizontal support 1 is connected to various components by bolts, which is convenient for installation and disassembly and reduces the difficulty of later maintenance.

[0037] In this embodiment, preferably, the laser light emitted by the laser 3 is used as a marker of the irradiation position of the X-rays emitted by the X-ray tube 4 .

[0038] The above embodiments are merely illustrative of the principles and effects of this patent application, and are not intended to limit this patent application. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of this patent application. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the relevant technical field without departing from the spirit and technical ideas disclosed in this patent application should still be covered by the claims of this patent application.

Claims

1. A laser image X-ray relative density testing device, characterized in that: It comprises a horizontal support (1), a reflector (6), a laser (3), a laser height sensor (2), an X-ray tube (4) and an X-ray detector (8); An X-ray tube (4) is mounted above one end of the horizontal support (1), a laser height sensor (2) is fixed obliquely below the other end, a reflector (6) is mounted directly below the X-ray tube (4), a laser (3) is fixed below the horizontal support (1) at the horizontal incident end of the reflector (6), and an X-ray detector (8) is arranged directly below the X-ray tube (4); The laser light emitted by the laser (3) is reflected by a reflector (6) to coincide with the X-ray light emitted by the X-ray tube (4), and is simultaneously vertically irradiated onto a detection window (7) of an X-ray detector (8). The laser height sensor (2) and the X-ray detector (8) are connected via a signal line to synchronously collect information. The X-ray tube (4) is externally irradiated with an X-ray tube protection box (5), the reflector (6) is externally covered with a reflector protection box (9), and the reflector protection box (9) is located at the emission end of the laser (3) and is provided with an S light hole (10); The reflector protection box (9) has a gradually increasing spacing from top to bottom, and the reflector (6) is made of single-sided aluminum plating; A pair of vertical brackets (11) perpendicular to the horizontal bracket (1) are installed between the horizontal bracket (1) and the X-ray detector (8); a horizontal connecting plate (12) is connected between the pair of vertical brackets (11); and a mounting hole for mounting the X-ray tube (4) is vertically provided in the horizontal connecting plate (12); The horizontal support (1), the horizontal connecting plate (12) and the vertical support (11) are made of aluminum alloy; The X-ray tube (4), the laser height sensor (2), the X-ray tube (4), and the reflector (6) are all connected to the horizontal support (1) by bolts; The laser light emitted by the laser (3) serves as an indicator of the irradiation position of the X-rays emitted by the X-ray tube (4).

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