CN203881952U - Inspection radiation field calibrator - Google Patents
Inspection radiation field calibrator Download PDFInfo
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- CN203881952U CN203881952U CN201420181370.5U CN201420181370U CN203881952U CN 203881952 U CN203881952 U CN 203881952U CN 201420181370 U CN201420181370 U CN 201420181370U CN 203881952 U CN203881952 U CN 203881952U
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- lower connecting
- positioning
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- radiation field
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Abstract
The utility model belongs to the field of tools for calibrating an inspection radiation field of a directional X-ray detection system, and particularly relates to an inspection radiation filed calibrator. The inspection radiation field calibrator comprises an upper horizontal plate, a lower connecting part and a vertical supporting plate, wherein the lower connecting part is composed of a lower connecting plate and a connecting end which is connected with an emission window of an X-ray tube head, the connecting end is fixed below the lower connecting plate, the upper horizontal plate and the lower connecting plate are parallel to each other and connected through the vertical supporting plate, the upper horizontal plate is provided with a positioning through hole I, the lower connecting part is provided with a positioning through hole II, the positioning through hole I and the positioning through hole II are identical in central axis, and the upper horizontal plate is further provided with a horizontal bubble. The calibrator provided by the utility model can ensure the X-ray tube head to be horizontal, ensure a flat panel detector to be horizontal and enable the center of an X-ray beam to be aligned to the center of the flat panel detector, avoids influences imposed on inspection results by deviation of a radiation field, has the advantages of simple operation, high calibration speed, high precision and low cost, and is convenient for large-scale popularization and application.
Description
Technical field
The utility model relates to a kind of check radiation field calibrating device, belongs to the truing tool field of directed x-ray detection system check radiation field.
Background technology
Domestic manufacture welded steel pipe producer carries and conventionally adopts directed x-ray detection system with the radioscopy of spiral seam submerged-arc welding pipe oil gas.Changing tube head X, change steel pipe specification, make regular check on, find that mechanism has when abnormal, must carry out adjustment to directed x-ray detection system check radiation field, object is to guarantee tube head X level, detector level, alignment detector center, X-ray beam center, avoids the undetected and erroneous judgement to assay of shortcoming in checkout procedure.Correctly the adjustment to ray detection system check radiation field, is the prerequisite of normal inspection.Directed x-ray detection system check radiation field (hereinafter to be referred as radiation field): use directed X-ray production apparatus, planar anode target and tube axis direction are the inclination angle of 20 °, angle of coverage scope is not less than 40 °, and the beam of launching in effective radiation angular range from tube head X launch window forms check ray field.At present, most of personnel come determination check radiation field whether to be adjusted to tram by working experience, but owing to there is no professional truing tool, usually can have certain error, bring departing from of radiation field, thereby affect final assay.
Utility model content
According to above deficiency of the prior art, the technical problems to be solved in the utility model is: a kind of rational in infrastructure, cost is low, simple to operate, calibration speed is fast and degree of accuracy is high check radiation field calibrating device is provided.
Check radiation field calibrating device described in the utility model, comprise leveling board, lower connecting portion and vertical back up pad, lower connecting portion is comprised of with the link being connected with X-ray tube head launch window lower connecting plate, link is fixed on lower connecting plate below, upper leveling board is parallel to each other and is connected by vertical back up pad with lower connecting plate is upper and lower, positioning through hole one is set on upper leveling board, on lower connecting portion, positioning through hole two is set, positioning through hole one is identical with the central axis of positioning through hole two, on upper leveling board, spirit bubble is also installed.
Principle of work and process:
During calibration, first the link of calibrating device bottom is vertically inserted in X-ray tube head launch window, the spirit bubble on it on leveling board can be calibrated X-ray tube head levelness (calibrating device own wt is not enough to change tube head levelness), then adopt the dull and stereotyped detection system of U.S. Varian DR, by flat panel detector be placed in calibrating device directly over, flat panel detector specification 130 * 130mm, Pixel Dimensions is 0.127mm, X-ray tube parameter is: large focal spot 3.0mm, little focus 0.4mm, the plane of flat panel detector and X-ray tube plate target are the inclination angle of 20 °, angle of coverage scope is not less than 40 °, matching current voltage carries out adjustment, by calibrating device positioning through hole one, the quiescent imaging situation of positioning through hole two, flat panel detector is carried out to inching, focal length is 410mm, positioning through hole one is 325mm to radiogenic distance, if radiation field has the situation of departing from, positioning through hole one after calibration, positioning through hole two imagings are decentraction, and can be partial to display window (being the image in a liquid crystal display) side, if it is concentric to calibrate latter two circle imaging, and be positioned at display window (being the image in liquid crystal display) center, flat panel detector level and X-ray beam are aimed at flat panel detector center, and radiation field adjustment is correct, thereby avoids radiation field to depart from the impact on assay.Whole calibration process is simple to operate, calibration speed is fast and degree of accuracy is high, is convenient to large-scale promotion application.
The beneficial effect that the utility model compared with prior art had is:
This check radiation field calibrating device reasonable in design, by this calibrating device, can guarantee X-ray tube head level, flat panel detector level, make X-ray beam center aim at flat panel detector center, avoid radiation field to depart from the impact on assay, have advantages of simple to operate, calibration speed is fast, degree of accuracy is high, cost is low, is convenient to large-scale promotion application.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is stereographic map of the present utility model.
In figure: 1, upper leveling board; 2, positioning through hole one; 3, spirit bubble; 4, vertical back up pad; 5, lower connecting plate; 6, link; 7, positioning through hole two.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described further:
As shown in Figure 1, 2, this check radiation field calibrating device comprises leveling board 1, lower connecting portion and vertical back up pad 4, lower connecting portion is comprised of with the link 6 being connected with X-ray tube head launch window lower connecting plate 5, link 6 is fixed on lower connecting plate 5 belows, upper leveling board 1 is parallel to each other and is connected by vertical back up pad 4 with lower connecting plate 5 is upper and lower, on upper leveling board 1, positioning through hole 1 is set, on lower connecting portion, positioning through hole 27 is set, positioning through hole 1 is identical with the central axis of positioning through hole 27, on upper leveling board 1, spirit bubble 3 is also installed.
Principle of work and process:
During calibration, first the link of calibrating device bottom 6 is vertically inserted in X-ray tube head launch window, the spirit bubble 3 on it on leveling board 1 can be calibrated X-ray tube head levelness (calibrating device own wt is not enough to change tube head levelness), then adopt the dull and stereotyped detection system of U.S. Varian DR, by flat panel detector be placed in calibrating device directly over, flat panel detector specification 130 * 130mm, Pixel Dimensions is 0.127mm, X-ray tube parameter is: large focal spot 3.0mm, little focus 0.4mm, the plane of flat panel detector and X-ray tube plate target are the inclination angle of 20 °, angle of coverage scope is not less than 40 °, matching current voltage carries out adjustment, by calibrating device positioning through hole 1, the quiescent imaging situation of positioning through hole 27, flat panel detector is carried out to inching, focal length is 410mm, positioning through hole 1 is 325mm to radiogenic distance, if radiation field has the situation of departing from, positioning through hole 1 after calibration, positioning through hole 27 imagings are decentraction, and can be partial to display window (being the image in a liquid crystal display) side, if it is concentric to calibrate latter two circle imaging, and be positioned at display window (being the image in liquid crystal display) center, flat panel detector level and X-ray beam are aimed at flat panel detector center, and radiation field adjustment is correct, thereby avoids radiation field to depart from the impact on assay.Whole calibration process is simple to operate, calibration speed is fast and degree of accuracy is high, is convenient to large-scale promotion application.
Claims (1)
1. check radiation field calibrating device for one kind, it is characterized in that: comprise leveling board (1), lower connecting portion and vertically back up pad (4), lower connecting portion is comprised of with the link (6) being connected with X-ray tube head launch window lower connecting plate (5), link (6) is fixed on lower connecting plate (5) below, on upper leveling board (1) and lower connecting plate (5), under be parallel to each other and connect by vertical back up pad (4), positioning through hole one (2) is set on upper leveling board (1), positioning through hole two (7) is set on lower connecting portion, positioning through hole one (2) is identical with the central axis of positioning through hole two (7), spirit bubble (3) is also installed on upper leveling board (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181370.5U CN203881952U (en) | 2014-04-15 | 2014-04-15 | Inspection radiation field calibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181370.5U CN203881952U (en) | 2014-04-15 | 2014-04-15 | Inspection radiation field calibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203881952U true CN203881952U (en) | 2014-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181370.5U Expired - Fee Related CN203881952U (en) | 2014-04-15 | 2014-04-15 | Inspection radiation field calibrator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203881952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956658A (en) * | 2017-05-27 | 2018-12-07 | 上海西门子医疗器械有限公司 | The method of x-ray system and the deflection current of calibration X-ray tube |
-
2014
- 2014-04-15 CN CN201420181370.5U patent/CN203881952U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956658A (en) * | 2017-05-27 | 2018-12-07 | 上海西门子医疗器械有限公司 | The method of x-ray system and the deflection current of calibration X-ray tube |
| CN108956658B (en) * | 2017-05-27 | 2021-10-22 | 上海西门子医疗器械有限公司 | X-ray system and method for calibrating deflection current of X-ray tube |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20180415 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |