CN117602317A - Radiation inspection device - Google Patents

Radiation inspection device Download PDF

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Publication number
CN117602317A
CN117602317A CN202311810426.9A CN202311810426A CN117602317A CN 117602317 A CN117602317 A CN 117602317A CN 202311810426 A CN202311810426 A CN 202311810426A CN 117602317 A CN117602317 A CN 117602317A
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CN
China
Prior art keywords
shielding
conveying
radiation
detection
shielding part
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CN202311810426.9A
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Chinese (zh)
Inventor
武文赟
陈刚
李晓刚
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Nuctech Co Ltd
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Nuctech Co Ltd
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Publication date
Application filed by Nuctech Co Ltd filed Critical Nuctech Co Ltd
Priority to CN202311810426.9A priority Critical patent/CN117602317A/en
Publication of CN117602317A publication Critical patent/CN117602317A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V5/00—Prospecting or detecting by the use of ionising radiation, e.g. of natural or induced radioactivity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
    • B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers

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  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Geophysics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Abstract

The present disclosure provides a radiation inspection apparatus comprising: a radiation scanning device; a conveying device; a plurality of first shielding portions, at least a portion of which is movably disposed with respect to the conveying device so as to be close to the conveying device or far from the conveying device; a plurality of second shielding portions, at least a portion of which is movably disposed with respect to the conveying device so as to be close to the conveying device or far from the conveying device; a plurality of first detection devices, wherein the upstream side of each first shielding part is correspondingly provided with one first detection device, and the first detection devices are far away from the conveying device in response to detection signals of articles passing through the corresponding first detection devices on the upstream side of the first detection devices; and a plurality of second detecting devices, wherein one second detecting device is correspondingly arranged on the upstream side of each second shielding part, and the second shielding part is far away from the conveying device in response to the detection signal of the article passing through the corresponding second detecting device on the upstream side. The technical scheme of the present disclosure can make the light object smoothly pass through the detection area of the radiation inspection device.

Description

Radiation inspection device
Technical Field
The present disclosure relates to the field of radiation inspection technology, and in particular, to a radiation inspection apparatus.
Background
In security inspection equipment such as an X-ray machine, lead door curtains are generally arranged on two sides of an inspection channel so as to prevent rays in the channel from leaking out of the security inspection equipment, thereby preventing personal damage to security inspection personnel, passengers and the like.
Under the drive of the conveying device, the article to be detected pushes the lead door curtain at the inlet to enter the detection area, and after detection, the lead door curtain at the outlet is pushed away from the detection area. Because the lead door curtain is heavy, some objects to be detected with lighter mass are difficult to directly jack the lead door curtain to enter the detection area. The light article to be inspected needs to be placed in the tray first and then is inspected, and this kind of mode complex operation needs to increase manual consumption, and needs to consider the problem that the tray circulation was used, even if the tray has been used, still has the risk that can't push up the lead door curtain and get into the detection area.
Disclosure of Invention
It is an object of the present disclosure to provide a radiation inspection device to enable light items to pass smoothly through a detection zone.
The present disclosure provides a radiation inspection apparatus comprising:
a radiation scanning device;
a conveying device configured to drive the article through the radiation scanning device for radiation inspection;
a plurality of first shielding portions arranged on an upstream side of an entrance of the radiation scanning apparatus in a conveying direction of the conveying apparatus and configured to shield radiation, at least a portion of the first shielding portions being movably disposed with respect to the conveying apparatus so as to be close to the conveying apparatus to shield radiation of the radiation scanning apparatus or away from the conveying apparatus to avoid articles on the conveying apparatus;
a plurality of second shielding portions arranged on a downstream side of an outlet of the radiation scanning apparatus in a conveying direction of the conveying apparatus and configured to shield radiation, at least a portion of the second shielding portions being movably disposed with respect to the conveying apparatus so as to shield radiation of the radiation scanning apparatus near the conveying apparatus or to avoid articles on the conveying apparatus away from the conveying apparatus;
a plurality of first detection devices configured to detect whether or not an article passes through the position, wherein one first detection device is correspondingly arranged on the upstream side of each first shielding part, and the first detection devices are far away from the conveying device in response to a detection signal that the article passes through the corresponding first detection device on the upstream side of the first detection devices; and
and the second detection devices are configured to detect whether articles pass through the positions, one second detection device is correspondingly arranged on the upstream side of each second shielding part, and the second detection devices are far away from the conveying device in response to detection signals of articles passing through the corresponding second detection devices on the upstream side of the second shielding parts.
In accordance with some embodiments of the present disclosure,
the downstream side of at least one first shielding part is correspondingly provided with one first detection device, and the first detection device corresponding to the downstream side of the first shielding part is close to the conveying device in response to a detection signal that an object passes through by one first detection device so as to close an inlet of the ray scanning device; and/or
The downstream side of at least one second shielding part is correspondingly provided with one second detection device, and the second shielding part is close to the conveying device in response to a detection signal that the corresponding second detection device passes through an article on the downstream side of the second shielding part, so that the outlet of the ray scanning device is closed.
In accordance with some embodiments of the present disclosure,
the downstream side of each first shielding part is correspondingly provided with one first detection device, and the first detection device is close to the conveying device in response to a detection signal that the corresponding first detection device passes through an article; and/or
One second detection device is correspondingly arranged on the downstream side of each second shielding part, and the second shielding parts are close to the conveying device in response to detection signals of articles passing through the corresponding second detection devices on the downstream side of each second shielding part.
In accordance with some embodiments of the present disclosure,
each first shielding part is correspondingly provided with two first detection devices, the two first detection devices are respectively positioned at the upstream side and the downstream side of the corresponding first shielding part, each first shielding part is far away from the conveying device in response to a detection signal that the corresponding first detection device at the upstream side has articles to pass through, and is close to the conveying device in response to a detection signal that the corresponding first detection device at the downstream side has articles to pass through; and/or
Each second shielding part is correspondingly provided with two second detection devices, the two second detection devices are respectively positioned at the upstream side and the downstream side of the corresponding second shielding part, each second shielding part is far away from the conveying device in response to a detection signal that the corresponding second detection device at the upstream side has articles to pass through, and is close to the conveying device in response to a detection signal that the corresponding second detection device at the downstream side has articles to pass through.
In accordance with some embodiments of the present disclosure,
of the adjacent two first shielding parts, a downstream side of one of the first shielding parts and an upstream side of the other first shielding part correspond to the same first detection device; and/or
Of the adjacent two second shielding portions, a downstream side of one of the second shielding portions and an upstream side of the other second shielding portion correspond to the same second detecting device.
In accordance with some embodiments of the present disclosure,
in the adjacent two first shielding parts, the downstream side of one first shielding part and the upstream side of the other first shielding part respectively correspond to two different first detection devices; and/or
In the adjacent two second shielding parts, the downstream side of one second shielding part and the upstream side of the other second shielding part respectively correspond to two different second detection devices.
According to some embodiments of the disclosure, two of the first shields and two of the second shields are included.
In accordance with some embodiments of the present disclosure,
each first shielding part is close to the conveying device after a corresponding first detection device on the upstream side of the first shielding part generates a detection signal for passing an article for a first preset time so as to close an inlet of the ray scanning device; and/or
And after each second shielding part generates a detection signal for passing through the article for a second preset time on one corresponding second detection device on the upstream side of the second shielding part, the second shielding part is close to the conveying device so as to close the outlet of the ray scanning device.
In accordance with some embodiments of the present disclosure,
each first shielding part comprises a plurality of first lead door curtains which are arranged side by side perpendicular to the conveying direction of the conveying device, and the bottom edges of the first lead door curtains are arranged in a lifting manner relative to the conveying device so as to be close to or far away from the conveying device; and/or
Each second shielding part comprises a plurality of second lead door curtains which are arranged side by side perpendicular to the conveying direction of the conveying device, and the bottom edges of the second lead door curtains are arranged in a lifting mode relative to the conveying device so as to be close to or far away from the conveying device.
In accordance with some embodiments of the present disclosure,
the first detection device comprises a first opposite-emission type photoelectric sensor, and the emitting end and the receiving end of the first opposite-emission type photoelectric sensor are arranged at intervals side by side along the conveying direction perpendicular to the conveying device; and/or
The second detection device comprises a second correlation photoelectric sensor, and the transmitting end and the receiving end of the second correlation photoelectric sensor are arranged at intervals side by side along the conveying direction perpendicular to the conveying device.
According to some embodiments of the present disclosure, the radiation inspection device is configured such that at any one time during which the radiation scanning device performs a radiation inspection of an article, at least a portion of at least one of the first shielding portions is proximate to the conveying device to shield radiation of the radiation scanning device, and at least a portion of at least one of the second shielding portions is proximate to the conveying device to shield radiation of the radiation scanning device.
In the radiation inspection device provided by the embodiment of the disclosure, as an article moves on a conveying device, when a first detection device corresponding to the upstream side of any first shielding part detects that the article passes through the position, the position where the article is about to pass through the first shielding part is indicated, and at the moment, the first shielding part can be far away from the conveying device to avoid the article; when the second detection device corresponding to the upstream side of any second shielding part detects that the object passes through the position, the position where the object passes through the second shielding part is indicated, and at the moment, the second shielding part can be far away from the conveying device to avoid the object. Therefore, when the light-weight object moves along the conveying direction of the conveying device, the light-weight object cannot be blocked by the first shielding part 3 and the second shielding part, and can smoothly pass through the detection area of the radiation inspection equipment without using a tray.
Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments of the disclosure, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and do not constitute an undue limitation on the disclosure. In the drawings:
fig. 1 is a schematic structural view of a radiation inspection device according to some embodiments of the present disclosure.
Fig. 2 is a schematic structural view of a radiation inspection device according to other embodiments of the present disclosure.
Fig. 3 is a schematic structural view of a radiation inspection device of further embodiments of the present disclosure.
In fig. 1 to 3, each reference numeral represents:
1. a radiation scanning device; 2. a conveying device; 3. a first shielding part; 4. a second shielding part; 5. a first detection device; 6. and a second detection device.
Detailed Description
The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses. All other embodiments, which can be made by one of ordinary skill in the art without inventive effort, based on the embodiments in this disclosure are intended to be within the scope of this disclosure.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present disclosure, it should be understood that the use of terms such as "first," "second," etc. for defining components is merely for convenience in distinguishing corresponding components, and the terms are not meant to be construed as limiting the scope of the present disclosure unless otherwise indicated.
In the description of the present disclosure, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present disclosure and to simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be configured and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present disclosure; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Referring to fig. 1 to 3, some embodiments of the present disclosure provide a radiation inspection apparatus including a radiation scanning device 1, a conveying device 2, a plurality of first shielding parts 3, a plurality of second shielding parts 4, a plurality of first detecting devices 5, and a plurality of second detecting devices 6.
The conveyor 2 is configured to carry articles through the radiation scanning device 1 for radiation inspection.
The plurality of first shielding portions 3 are arranged on the upstream side of the entrance of the radiation scanning apparatus 1 in the conveying direction of the conveying apparatus 2 and configured to shield radiation, and at least a part of the first shielding portions 3 are movably disposed with respect to the conveying apparatus 2 to be close to the conveying apparatus 2 to shield radiation of the radiation scanning apparatus 1 or to be away from the conveying apparatus 2 to avoid articles on the conveying apparatus 2.
The plurality of second shielding portions 4 are arranged on the downstream side of the outlet of the radiation scanning apparatus 1 in the conveying direction of the conveying apparatus 2 and configured to shield radiation, and at least a part of the second shielding portions 4 are movably disposed with respect to the conveying apparatus 2 to shield radiation of the radiation scanning apparatus 1 near the conveying apparatus 2 or to avoid articles on the conveying apparatus 2 away from the conveying apparatus 2.
The plurality of first detecting devices 5 are configured to detect whether or not an article passes through the position, one first detecting device 5 is correspondingly disposed on the upstream side of each first shielding portion 3, and the first shielding portion is far away from the conveying device 2 in response to a detection signal that the article passes through the corresponding first detecting device 5 on the upstream side.
The plurality of second detecting devices 6 are configured to detect whether or not an article passes through the position, one second detecting device 6 is correspondingly arranged on the upstream side of each second shielding part 4, and the second shielding part is far away from the conveying device 2 in response to a detection signal that the article passes through the corresponding second detecting device 6 on the upstream side.
The manner in which the first shielding portion 3 and the second shielding portion 4 are moved closer to or farther from the conveying device 2 is not limited, and may be moved closer to or farther from the conveying device 2 by translation or rotation, for example.
Alternatively, each of the first shielding portions 3 includes a plurality of first lead curtains arranged side by side perpendicular to the conveying direction of the conveying device 2, and the bottom edges of the plurality of first lead curtains are arranged liftably with respect to the conveying device 2 so as to be close to or apart from the conveying device 2. Alternatively, each of the second shielding portions 4 includes a plurality of second lead curtains arranged side by side perpendicular to the conveying direction of the conveying device 2, and bottom edges of the plurality of second lead curtains are arranged liftably with respect to the conveying device 2 so as to be close to or apart from the conveying device 2.
Alternatively, the radiation inspection apparatus includes a lift drive mechanism drivingly connected to the first lead door curtain and the second lead door curtain, the lift drive mechanism opening or closing the entrance side or the exit side of the radiation scanning device 1 by raising or lowering the bottom edge of the first lead door curtain or the second lead door curtain, the raising and lowering actions corresponding to the actions of the first shielding portion 3 or the second shielding portion 4 away from and toward the conveying device 2, respectively.
The first detection means 5 and the second detection means 6 may employ an opposite-type photoelectric sensor or a reflective-type photoelectric sensor, for example, an infrared photoelectric sensor.
Alternatively, referring to fig. 1 to 3, the first detecting device 5 includes a first correlation type photoelectric sensor, and the transmitting end and the receiving end of the first correlation type photoelectric sensor are disposed at a side-by-side interval in a direction perpendicular to the conveying direction of the conveying device 2. Alternatively, referring to fig. 1 to 3, the second detecting device 6 includes a second correlation type photoelectric sensor, and the transmitting end and the receiving end of the second correlation type photoelectric sensor are disposed at a side-by-side interval in a direction perpendicular to the conveying direction of the conveying device 2.
In the description of the present disclosure, the descriptions of "upstream" and "downstream" are all referred to the conveying direction of the conveying device 2.
In the radiation inspection device provided by the embodiment of the present disclosure, as an article moves on the conveying device 2, when the first detection device 5 corresponding to the upstream side of any one of the first shielding portions 3 detects that the article passes through the position where the article is about to pass through the first shielding portion 3, the first shielding portion 3 may be far away from the conveying device to avoid the article; when the second detection device 6 corresponding to the upstream side of any second shielding part 4 detects that the object passes through the position where the object passes through the second shielding part 4, the second shielding part 4 can be far away from the conveying device to avoid the object. Therefore, when the light-weight object moves along the conveying direction of the conveying device 2, the light-weight object cannot be blocked by the first shielding part 3 and the second shielding part 4, and can smoothly pass through the detection area of the radiation inspection equipment without using a tray.
Different embodiments of the radiation inspection device of the present disclosure are further described below in connection with fig. 1-3.
In some embodiments, a first detecting device 5 is disposed on the downstream side of at least one first shielding portion 3, and the first shielding portion is close to the conveying device 2 in response to a detection signal that an article passes through the first detecting device 5 on the downstream side of the first shielding portion, so as to close the entrance of the radiation scanning device 1.
In the above embodiment, as the articles move on the conveying device 2, when the first detecting device 5 corresponding to the downstream side of any first shielding part 3 detects that the articles pass through the position where the first shielding part 3 is located, the first shielding part 3 can approach the conveying device to shield the rays of the ray scanning device 1, so that the rays can be prevented from leaking out of the radiation inspection device, and the safety risk is reduced.
In some embodiments, a second detecting device 6 is disposed on the downstream side of at least one second shielding portion 4, and the second shielding portion is close to the conveying device 2 in response to a detection signal that an article passes through the second detecting device 6 on the downstream side of the second shielding portion, so as to close the outlet of the radiation scanning device 1.
The effect produced by the correspondence relationship and the positional relationship of the second shielding portion 4 and the second detecting means 6 in the above-described embodiment can be referred to the above description about the first shielding portion 3 and the first detecting means 5.
In some embodiments, referring to fig. 3, the downstream side of each first shielding portion 3 is provided with one first detecting device 5, and approaches the conveying device 2 in response to a detection signal that an article passes through the corresponding one of the first detecting devices 5 on the downstream side thereof.
In the above embodiment, the downstream side of each first shielding portion 3 is correspondingly provided with one first detecting device 5, and when an article moves to the downstream side of each first shielding portion 3, the first detecting device 5 can be triggered to make the first shielding portion 3 close to the conveying device 2, so that the effect of shielding rays can be further improved.
In some embodiments, a second detecting device 6 is disposed on the downstream side of each second shielding portion 4, and the second shielding portion is close to the conveying device 2 in response to a detection signal that the article passes through the corresponding second detecting device 6 on the downstream side.
The effect produced by the correspondence relationship and the positional relationship of the second shielding portion 4 and the second detecting means 6 in the above-described embodiment can be referred to the above description about the first shielding portion 3 and the first detecting means 5.
In some embodiments, referring to fig. 2 and 3, each first shielding part 3 is correspondingly provided with two first detection devices 5, the two first detection devices 5 are respectively located on the upstream side and the downstream side of the corresponding first shielding part 3, each first shielding part 3 is far away from the conveying device 2 in response to the detection signal of the article passing through the corresponding one of the first detection devices 5 on the upstream side of the first shielding part 3, and is close to the conveying device 2 in response to the detection signal of the article passing through the corresponding one of the first detection devices 5 on the downstream side of the first shielding part 3.
In the above embodiment, the upstream side and the downstream side of each first shielding portion 3 are respectively provided with the first detection device 5, and the actions of the first shielding portions 3 approaching or departing from the conveying device 2 are triggered along with the position change of the article, so that the effects of avoiding the article and shielding rays can be considered in the moving process of the article.
In some embodiments, referring to fig. 2 and 3, each second shielding portion 4 is correspondingly provided with two second detecting devices 6, the two second detecting devices 6 are respectively located on the upstream side and the downstream side of the corresponding second shielding portion 4, and each second shielding portion 4 is far away from the conveying device 2 in response to the detection signal of the article passing through the corresponding one of the second detecting devices 6 on the upstream side thereof, and is close to the conveying device 2 in response to the detection signal of the article passing through the corresponding one of the second detecting devices 6 on the downstream side thereof.
The effect produced by the correspondence relationship and the positional relationship of the second shielding portion 4 and the second detecting means 6 in the above-described embodiment can be referred to the above description about the first shielding portion 3 and the first detecting means 5.
In some embodiments, referring to fig. 2, in two adjacent first shielding parts 3, the downstream side of one first shielding part 3 and the upstream side of the other first shielding part 3 correspond to the same first detection device 5.
In the above embodiment, one first detecting device 5 is provided between two adjacent first shielding portions 3 in the conveying direction, when an object passes through the first detecting device 5, one first shielding portion 3 located upstream is close to the conveying device 2, and one first shielding portion 3 located downstream is away from the conveying device 2. The number of the first detecting devices 5 arranged in this way is relatively small, so that the complexity of the device structure can be reduced, and the occupied space of the device along the conveying direction can be reduced.
In some embodiments, referring to fig. 2, in two adjacent second shielding portions 4, the downstream side of one second shielding portion 4 and the upstream side of the other second shielding portion 4 correspond to the same second detection device 6.
The effect produced by the correspondence relationship and the positional relationship of the second shielding portion 4 and the second detecting means 6 in the above-described embodiment can be referred to the above description about the first shielding portion 3 and the first detecting means 5.
In some embodiments, referring to fig. 3, in two adjacent first shielding parts 3, the downstream side of one first shielding part 3 and the upstream side of the other first shielding part 3 correspond to two different first detection devices 5, respectively.
In the above embodiment, two different first detecting devices 5 are disposed between two adjacent first shielding portions 3 along the conveying direction, when an object passes through a first detecting device 5, one first shielding portion 3 located upstream approaches the conveying device 2, and when the object continues to move, passes through a second first detecting device 5, one first shielding portion 3 located downstream is away from the conveying device 2. That is, the movement of the upstream one of the first shielding portions 3 toward the conveyor 2 is preceded and the movement of the downstream one of the first shielding portions 3 away from the conveyor 2 is followed with a time interval therebetween, which is advantageous in reducing the radiation leakage as much as possible.
Alternatively, of the adjacent two first shielding portions 3, one first shielding portion 3 located upstream is brought close to the conveying device in response to a detection signal of the passage of the article by one first detecting device 5 corresponding to the downstream side of itself, and one first shielding portion 3 located upstream is moved to the limit position closest to the conveying device 2 before the passage of the article is detected by one first detecting device 5 corresponding to the upstream side of one first shielding portion 3 located downstream.
In some embodiments, referring to fig. 3, in two adjacent second shielding portions 4, the downstream side of one second shielding portion 4 and the upstream side of the other second shielding portion 4 correspond to two different second detection devices 6, respectively.
In the above-described embodiment, the effect produced by the correspondence relationship and the positional relationship of the second shielding portion 4 and the second detecting device 6 can be referred to the above description about the first shielding portion 3 and the first detecting device 5.
In some embodiments, referring to fig. 1 to 3, the radiation inspection device comprises two first shields 3 and two second shields 4.
In the above embodiment, the two first shielding portions 3 or the two second shielding portions 4 may alternately be far away from or near to the conveying device 2, which gives consideration to the effects of avoiding articles and shielding rays, and the radiation inspection device occupies a small space along the conveying direction of the conveying device 2.
In the above embodiments, the radiation inspection device triggers the first detection device 5 or the second detection device 6 through the movement of the article, and controls the first shielding part 3 or the second shielding part 4 to approach the conveying device 2, thereby playing a role of shielding rays.
Of course, the radiation inspection device may not control the first shielding portion 3 or the second shielding portion 4 to approach the conveying device 2 in the above manner, but obtain the time required for the article to pass through the first shielding portion 3 or the second shielding portion 4 according to the speed, the distance and other parameters of the article conveyed by the conveying device 2, where the time is taken as a preset time period, and after the first shielding portion 3 or the second shielding portion 4 is far away from the conveying device 2, that is, the action of avoiding the article is performed, the first shielding portion 3 or the second shielding portion 4 approaches the conveying device 2 after the preset time period, so as to ensure the effect of shielding rays.
In some embodiments, after each first shielding portion 3 generates a detection signal for passing through an article for a first preset time in a corresponding first detection device 5 on the upstream side thereof, the first shielding portion approaches the conveying device 2 to close the entrance of the radiation scanning device 1.
In some embodiments, each second shielding portion 4 is close to the conveying device 2 after a second preset time after a corresponding second detecting device 6 on the upstream side generates a detecting signal for passing the article, so as to close the outlet of the radiation scanning device 1.
In some embodiments, the radiation inspection device is configured such that at any instant in the process of the radiation scanning device 1 performing a radiation inspection on an article, at least a portion of the at least one first shielding 3 is proximate to the conveyor 2 to shield radiation of the radiation scanning device 1 and at least a portion of the at least one second shielding 4 is proximate to the conveyor 2 to shield radiation of the radiation scanning device 1.
In the above embodiment, when an object enters the radiation scanning apparatus 1, at least one of the first shielding portion 3 and the second shielding portion 4 may close the entrance side or the exit side of the radiation scanning apparatus 1 by approaching the conveying apparatus 2, thereby reducing the risk of radiation leakage during the radiation inspection of the object by the radiation scanning apparatus 1.
Finally, it should be noted that: the above embodiments are merely for illustrating the technical solution of the present disclosure and are not limiting thereof; although the present disclosure has been described in detail with reference to preferred embodiments, those of ordinary skill in the art will appreciate that: modifications may be made to the specific embodiments of the disclosure or equivalents may be substituted for part of the technical features that are intended to be included within the scope of the claims of the disclosure.

Claims (11)

1. A radiation inspection device, comprising:
a radiation scanning device (1);
a conveyor (2) configured to drive the articles through the radiation scanning device (1) for radiation inspection;
a plurality of first shielding portions (3) arranged on an upstream side of an entrance of the radiation scanning apparatus (1) in a conveying direction of the conveying apparatus (2) and configured to shield radiation, at least a portion of the first shielding portions (3) being movably disposed with respect to the conveying apparatus (2) so as to be close to the conveying apparatus (2) to shield radiation of the radiation scanning apparatus (1) or away from the conveying apparatus (2) to avoid articles on the conveying apparatus (2);
a plurality of second shielding portions (4) arranged on a downstream side of an outlet of the radiation scanning apparatus (1) in a conveying direction of the conveying apparatus (2) and configured to shield radiation, at least a portion of the second shielding portions (4) being movably disposed with respect to the conveying apparatus (2) so as to shield radiation of the radiation scanning apparatus (1) near the conveying apparatus (2) or to avoid articles on the conveying apparatus (2) away from the conveying apparatus (2);
a plurality of first detection devices (5) configured to detect whether or not an article passes through the position, wherein one first detection device (5) is correspondingly arranged on the upstream side of each first shielding part (3), and the first detection device is far away from the conveying device (2) in response to a detection signal of the article passing through the corresponding first detection device (5) on the upstream side; and
and a plurality of second detection devices (6) configured to detect whether an article passes through the position, wherein one second detection device (6) is correspondingly arranged on the upstream side of each second shielding part (4), and the second detection devices are far away from the conveying device (2) in response to a detection signal of the article passing through the corresponding second detection device (6) on the upstream side.
2. The radiation inspection device of claim 1, wherein the radiation inspection device comprises a radiation detector,
at least one of the first shielding parts (3) is provided with a corresponding first detection device (5) on the downstream side, and the first shielding part is close to the conveying device (2) in response to a detection signal of passing of an article by the corresponding first detection device (5) on the downstream side of the first shielding part so as to close an inlet of the ray scanning device (1); and/or
At least one second shielding part (4) is provided with a second detection device (6) correspondingly on the downstream side, and the second shielding part is close to the conveying device (2) in response to a detection signal of passing of an article by the second detection device (6) corresponding to the downstream side of the second shielding part, so as to close an outlet of the ray scanning device (1).
3. The radiation inspection device of claim 2, wherein the radiation inspection device,
the downstream side of each first shielding part (3) is correspondingly provided with one first detection device (5), and the first shielding part is close to the conveying device (2) in response to a detection signal of passing of an article by the corresponding first detection device (5) on the downstream side; and/or
One second detection device (6) is correspondingly arranged on the downstream side of each second shielding part (4), and the second shielding parts are close to the conveying device (2) in response to a detection signal of passing of an article by the corresponding second detection device (6) on the downstream side.
4. A radiation inspection device according to claim 3, wherein,
each first shielding part (3) is correspondingly provided with two first detection devices (5), the two first detection devices (5) are respectively positioned at the upstream side and the downstream side of the corresponding first shielding part (3), each first shielding part (3) is far away from the conveying device (2) in response to a detection signal of passing of an article by one first detection device (5) corresponding to the upstream side of the first shielding part, and is close to the conveying device (2) in response to a detection signal of passing of an article by one first detection device (5) corresponding to the downstream side of the first shielding part; and/or
Each second shielding part (4) is correspondingly provided with two second detection devices (6), the two second detection devices (6) are respectively positioned at the upstream side and the downstream side of the corresponding second shielding part (4), each second shielding part (4) is far away from the conveying device (2) in response to a detection signal of passing of an article corresponding to one second detection device (6) at the upstream side of the second shielding part, and is close to the conveying device (2) in response to a detection signal of passing of an article corresponding to one second detection device (6) at the downstream side of the second shielding part.
5. The radiation inspection device of claim 4, wherein the radiation inspection device comprises,
of the adjacent two first shielding portions (3), a downstream side of one of the first shielding portions (3) and an upstream side of the other first shielding portion (3) correspond to the same first detecting device (5); and/or
Of the adjacent two second shielding portions (4), a downstream side of one of the second shielding portions (4) and an upstream side of the other second shielding portion (4) correspond to the same second detection device (6).
6. The radiation inspection device of claim 4, wherein the radiation inspection device comprises,
of the adjacent two first shielding parts (3), a downstream side of one of the first shielding parts (3) and an upstream side of the other first shielding part (3) correspond to two different first detection devices (5), respectively; and/or
Of the adjacent two second shielding portions (4), a downstream side of one of the second shielding portions (4) and an upstream side of the other second shielding portion (4) correspond to two different second detecting devices (6), respectively.
7. The radiation inspection device according to claim 4, characterized by comprising two of said first shielding portions (3) and two of said second shielding portions (4).
8. The radiation inspection device of claim 1, wherein the radiation inspection device comprises a radiation detector,
each first shielding part (3) is close to the conveying device (2) after a corresponding first detection device (5) on the upstream side of the first shielding part generates a detection signal for passing an article for a first preset time so as to close an inlet of the ray scanning device (1); and/or
Each second shielding part (4) is close to the conveying device (2) after a second preset time of a detection signal for passing through an article is generated by one corresponding second detection device (6) on the upstream side of the second shielding part, so that the outlet of the ray scanning device (1) is closed.
9. The radiation inspection device defined in any one of claims 1-8,
each first shielding part (3) comprises a plurality of first lead door curtains which are arranged side by side perpendicular to the conveying direction of the conveying device (2), and the bottom edges of the plurality of first lead door curtains are arranged in a lifting manner relative to the conveying device (2) so as to be close to or far away from the conveying device (2); and/or
Each second shielding part (4) comprises a plurality of second lead door curtains which are arranged side by side perpendicular to the conveying direction of the conveying device (2), and the bottom edges of the second lead door curtains are arranged in a lifting mode relative to the conveying device (2) so as to be close to or far away from the conveying device (2).
10. The radiation inspection device defined in any one of claims 1-8,
the first detection device (5) comprises a first opposite-emission type photoelectric sensor, and the emitting end and the receiving end of the first opposite-emission type photoelectric sensor are arranged at intervals side by side along the conveying direction perpendicular to the conveying device (2); and/or
The second detection device (6) comprises a second correlation photoelectric sensor, and the transmitting end and the receiving end of the second correlation photoelectric sensor are arranged at intervals side by side along the conveying direction perpendicular to the conveying device (2).
11. The radiation inspection device according to any one of claims 1 to 8, characterized in that the radiation inspection means are configured such that at any instant of the process of the radiation scanning means (1) performing a radiation inspection of an article, at least a part of at least one of the first shielding portions (3) is close to the conveying means (2) for shielding radiation of the radiation scanning means (1), and at least a part of at least one of the second shielding portions (4) is close to the conveying means (2) for shielding radiation of the radiation scanning means (1).
CN202311810426.9A 2023-12-26 2023-12-26 Radiation inspection device Pending CN117602317A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311810426.9A CN117602317A (en) 2023-12-26 2023-12-26 Radiation inspection device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311810426.9A CN117602317A (en) 2023-12-26 2023-12-26 Radiation inspection device

Publications (1)

Publication Number Publication Date
CN117602317A true CN117602317A (en) 2024-02-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311810426.9A Pending CN117602317A (en) 2023-12-26 2023-12-26 Radiation inspection device

Country Status (1)

Country Link
CN (1) CN117602317A (en)

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