CN201903655U - Positioning and measuring bracket for high-purity germanium detector - Google Patents

Abstract

The utility model belongs to the technical field of gamma quantitative inspection, and particularly relates to a positioning and measuring bracket for a high-purity germanium detector. The bracket comprises a thin film source fixer 1, a transverse guide rail 2, a measuring vertical rod 3, a detector base 4, a longitudinal guide rail 5 and a cart 6, wherein the detector base 4 comprises three arc sheet-shaped structures; the detector base 4 and the longitudinal guide rail 5 are oppositely fixed on the cart 6; a base of the measuring vertical rod 3 is mounted on the longitudinal guide rail 5; the measuring vertical rod 3 is vertical to the longitudinal guide rail 5; the transverse guide rail 2 is mounted at the center shaft position of two parallel upright posts of the measuring vertical rod 3; and the thin film fixer 1 penetrates through the two parallel rods of the transverse guide rail 2. The bracket is mounted in a way completely independent from a probe of the detector, so that the bracket cannot damage the probe in the use process; and a radiative source can be measured at any point in a three-dimensional space, so that the measuring range is widened and the measuring accuracy can be ensured.

Description

High-purity germanium detector positioning measurement bracket

technical field

The utility model belongs to the technical field of gamma quantitative measurement, in particular to a high-purity germanium detector positioning measurement bracket.

Background technique

In the research and development of quantitative measurement technology for high-purity germanium detectors, the combination of simulation calculation and positioning measurement is the key technical approach to establish the mathematical calculation model of high-purity germanium detectors. The existing detector positioning measurement equipment is a seven-point positioning measurement bracket, which is directly installed on the probe part of the detector. By detecting standard radioactive point sources fixed at seven typical positions, a high Computational model of a pure germanium detector. This positioning measurement method is undoubtedly effective, but the probe of the high-purity germanium detector is a key component and a precision instrument of the entire detector. If the positioning bracket is directly installed on the probe, it is likely to have damage to the probe during use. damage, and high-purity germanium detectors are expensive.

Utility model content

(1) Purpose of utility model

The utility model provides a high-purity germanium detector positioning and measuring support capable of multi-directional positioning and measurement, and the support does not need to be installed on the probe.

(2) Technical solutions

The utility model provides a high-purity germanium detector positioning and measuring bracket, which includes the following parts: a film source fixer, a horizontal guide rail, a measuring pole, a detector base, a longitudinal guide rail, a cart and a slider, wherein the detector The base is composed of 3 arc-shaped sheet structures, the longitudinal guide rail is two parallel tracks, the measuring pole is composed of two parallel columns, the detector base and the longitudinal guide rail are fixed on the cart, and the base of the measuring pole is installed on the longitudinal guide rail Above, the measuring pole is perpendicular to the longitudinal guide rail, and a slider is installed at the central axis of the two parallel columns of the measuring pole; one end of the transverse guide rail is connected to the slider shaft; the film source holder passes through the two parallel bars of the transverse guide rail. A high-purity germanium detector lifting platform is installed under the detector base, and the lifting platform is composed of a lifting bracket, a lifting platform, a hand wheel and a track. Among the 8 ends of the rod, the two ends of a and b are connected to the shafts of the fixing parts on the trolley; The two sliding parts are connected by shafts, the two ends of g and h are connected with the shafts of the two sliding parts on the lower surface track of the lifting platform, and the intersection point of the two metal rods is the shaft connection; the positional relationship between the trolley track and the lower surface track of the lifting platform is Four parallel sides on the cuboid; the hand wheel is installed between the two guide rails on the lower surface of the lifting platform to control the lifting and lowering of the lifting platform. The horizontal guide rail, the measuring pole and the longitudinal guide rail are all provided with scales.

(3) Effect of utility model

The high-purity germanium detector positioning and measuring bracket provided by the utility model, because the bracket is completely independent of the detector probe installation, will not damage the probe during use, and the bracket composed of multiple guide rails makes the radiation source It can be measured at any point in the three-dimensional space, and through the size record, repeatable measurement can be realized. While expanding the measurement range, the measurement accuracy is also guaranteed.

Description of drawings

Figure 1 Stereoscopic view of high-purity germanium detector positioning measurement bracket

1 film source holder, 2 horizontal guide rail, 3 measuring pole, 4 detector base, 5 longitudinal guide rail, 6 trolley, slider 12;

Figure 2 The right view of the high-purity germanium detector positioning measurement bracket

2 horizontal guide rails, 3 measuring poles, 4 detector bases, 5 longitudinal guide rails, 6 carts, 12 sliders;

Figure 3 Top view of high-purity germanium detector positioning measurement bracket

1 film source holder, 2 horizontal guide rail, 3 measuring pole, 4 detector base, 5 longitudinal guide rail, 6 trolley, slider 12;

Figure 4 Stereoscopic view of high-purity germanium detector lifting platform

7 lifting bracket, 8 lifting platform, 9 hand wheel, 10 track, a, b, c, d, e, f, g, h lifting bracket end, wherein, a and b, c and d, e and f, g and h is symmetrical in pairs, and d and h are omitted in the figure;

Figure 5 Right view of high-purity germanium detector lifting platform

7 lifting bracket, 8 lifting platform, 9 hand wheel, 10 track;

Figure 6 Rear view of the high-purity germanium detector lifting platform

7 lifting brackets, 8 lifting platforms, 10 tracks.

Detailed ways

Below in conjunction with embodiment the utility model is further elaborated.

Example 1

As shown in Figures 1, 2 and 3, the high-purity germanium detector positioning and measuring bracket provided by the utility model includes the following parts: film source holder 1, horizontal guide rail 2, measuring pole 3, detector base 4, longitudinal guide rail 5. The trolley 6 and the slider 12, wherein the detector base 4 is composed of three arc-shaped sheet structures, the longitudinal guide rail 5 is two parallel tracks, the measuring pole 3 is composed of two parallel columns, the detector base 4 and The longitudinal guide rail 5 is fixed on the cart 6, the base of the measuring pole 3 is installed on the longitudinal guide rail 5, the measuring pole 3 is perpendicular to the longitudinal guide rail 5, and can move back and forth on the longitudinal guide rail 5; A slider 12 is installed at the central axis of the parallel column, and one end of the horizontal guide rail 2 is connected to the slider 12. The horizontal guide rail 2 can rotate 360 degrees with the slider 12 as the center of the circle, or it can measure the position of the central axis of the vertical rod 3 Move up and down, when moving up and down, the shaft connection between the transverse guide rail 2 and the slide block 12 is blocked by the stop shaft; Above-mentioned transverse guide rail 2, measuring pole 3, longitudinal guide rail 5 are all provided with scale.

When using the high-purity germanium detector to position the measurement bracket, the high-purity germanium detector is placed on the detector base 4, and the nut on the detector base 4 is tightened to fix the detector; the radioactive point source to be measured is placed on the film In the source holder 1, adjust the position of the film source holder 1 on the transverse guide rail 2 and fix the film source holder 1, adjust the position of the transverse guide rail 2 on the measuring pole 3 and fix the transverse guide rail 2, and adjust the measuring pole 3 Position on the longitudinal guide rail 5 and fix the measuring pole 3, record the dimensions on the transverse guide rail 2, the measuring pole 3, and the longitudinal guide rail 5, and realize the measurement and repeated measurement of any point in the three-dimensional space. The bracket is set independently, not in direct contact with the probe of the detector, and will not damage the probe during use. While expanding the measurement range, the measurement accuracy is also guaranteed.

Example 2

A high-purity germanium detector positioning measurement bracket, the same as embodiment 1, the difference is that the detector base 4 is fixed on the high-purity germanium detector lifting platform, as shown in Figures 4, 5 and 6: the lifting platform is lifted by Support 7, lifting platform 8, hand wheel 9, track 10, and track 11 are made up of, and wherein, lifting support 7 is made up of 4 metal rods two by two intersect, and the end a of metal rod, b two ends and the fixing on cart 6 The two ends of c and d are connected with the shaft of the fixed part on the lower surface of the lifting platform 8, the two ends of e and f are connected with the two sliding parts on the track 10, and the two ends of g and h are connected with the two ends of the track 11. Two sliding parts are connected by shafts, wherein, a and b, c and d, e and f, g and h are symmetrical in pairs, and d and h are omitted in the figure; the track 10 is fixed on the trolley 6; the track 11 is fixed on the lifting platform 8 lower surface, the positional relationship between track 11 and track 10 is four parallel sides on the cuboid; drop. A lifting platform is added to easily adjust the height of the high-purity germanium detector to obtain the best measurement position.

Claims (3)

1. High-purity germanium detector positioning measurement bracket, which includes the following components: film source holder (1), horizontal guide rail (2), measuring pole (3), detector base (4), longitudinal guide rail (5) , a trolley (6) and a slide block (12), wherein the detector base (4) is composed of 3 arc-shaped sheet structures, the longitudinal guide rail (5) is two parallel tracks, and the measuring pole (3) is composed of two Composed of parallel columns, the detector base (4) and longitudinal guide rail (5) are fixed on the trolley (6), the base of the measuring pole (3) is installed on the longitudinal guide rail (5), and the measuring pole (3) is perpendicular to Longitudinal guide rail (5), slide block (12) is installed on two parallel column center axis positions of measuring pole (3); One end of transverse guide rail (2) is connected with slide block (12) axle; Film source fixer (1 ) through the two parallel bars of the transverse rail (2). 2. the high-purity germanium detector positioning and measuring support according to claim 1, is characterized in that: a high-purity germanium detector lifting platform is installed under the described detector base (4), and the lifting platform is formed by a lifting bracket (7 ), a lifting platform (8), a hand wheel (9), a track (10), and a track (11), wherein the lifting bracket (7) is made up of 4 metal rods intersecting two by two, and 8 of the 4 metal rods Among the ends, the two ends of a and b are connected with the shafts of the fixed parts on the cart (6), the two ends of c and d are connected with the shafts of the fixed parts on the lower surface of the lifting platform (8), and the two ends of e and f are connected with the shafts of the rails (10 ) on the shafts of the two sliding parts, g and h two ends are connected to the shafts of the two sliding parts on the track (11), and the intersection of the two metal rods is the shaft connection; the track (10) is fixed on the cart (6 ); the track (11) is fixed on the lower surface of the lifting platform (8), and the positions of the track (11) and the track (10) are four parallel sides on the cuboid; the hand wheel (9) is installed under the lifting platform (8) surface, between the two rails of the track (11). 3. The high-purity germanium detector positioning bracket according to claim 1, characterized in that: said transverse guide rail (2), measuring pole (3), and longitudinal guide rail (5) are all provided with scales.

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