Patent Grant
10784008
The present application claims a priority of the Chinese Application No. 201711008514.1, filed on Oct. 25, 2017, the entire of which is incorporated here by reference.
The present disclosure relates to a field of radiation detecting technology, particularly to a shield cover for a radiation source machine and a security inspection apparatus.
A radiation source machine is mainly used for irradiating an object under detection by a beam of rays generated by a ray tube, so that the rays hit a detector after absorption by the object under detection. The detector converts the rays into a signal, and the signal is amplified and processed to be displayed on a display screen, which can assist an inspector to distinguish different substances simply and quickly.
During the use of the radiation source machine, as a radiation surface for emitting the rays of the ray tube is large, the detector cannot receive all of the rays, and thus there are radiation rays which fails to be used for acting on the object under detection. Due to a large radiation of X-rays, if the X-rays that cannot be received by the detector or are not used is not shielded after emitted, unnecessary damage to the human body will occur.
Embodiments of the present disclosure provide a shield cover for a radiation source machine and a security inspection apparatus, which can effectively shield useless rays generated by the radiation source machine, thereby avoiding damage to the human body without damaging the radiation source machine itself.
An aspect of an embodiment of the present disclosure provides a shield cover for a radiation source machine, comprising: a frame body provided with a receiving chamber for receiving the radiation source machine, an end opening and an ray exit through which rays are emitted out from the radiation source machine; an end cover disposed at the end opening of the frame body and provided with a sealed chamber communicating with the receiving chamber; and a connecting member disposed between the end cover and the frame body and provided with an opening for communicating the sealed chamber of the end cover with the receiving chamber of the frame body, and the end cover being movably connected to the frame body by the connecting member such that a distance of the end cover from the end opening of the frame body is adjustable.
According to one embodiment of the present disclosure, the connecting member comprises a first connecting member and a second connecting member, a side of the first connecting member is fixedly connected to the end cover and the other side of the first connecting member is movably connected to the frame body, and a side of the second connecting member is fixedly connected to the end cover and the other side of the second connecting member is movably connected to the frame body, wherein the first connecting member and the second connecting member are arranged to mate with each other to form the opening.
According to one embodiment of the present disclosure, the first connecting member and the frame body are respectively provided with a first hole and a second hole corresponding with each other, wherein at least one of the first hole and the second hole is formed into a strip-shaped hole, and a first connector is disposed within the first hole and the second hole to movably connect the first connecting member to the frame body, and the second connecting member and the frame body are respectively provided with a third hole and a fourth hole corresponding with each other, wherein at least one of the third hole and the fourth hole is formed into a strip-shaped hole, and a second connector is disposed within the third hole and the fourth hole to movably connect the second connecting member to the frame body.
According to one embodiment of the present disclosure, the connecting member is provided with an enclosing member surrounding the opening and extending into the receiving chamber, and an outer wall surface of the enclosing member and an inner wall surface of the receiving chamber are kept overlapping with each other with a gap remained therebetween.
According to one embodiment of the present disclosure, the frame body, the end cover, and the enclosing member are provided with anti-radiation plates on their respective wall surfaces.
According to one embodiment of the present disclosure, the anti-radiation plates are provided on respective inner wall surfaces of the frame body, the end cover and the enclosing member, and two adjacent ends of two adjacent anti-radiation plates are in an overlapping connection with each other.
According to one embodiment of the present disclosure, one of the two adjacent ends is formed with a stepped portion, and the other of the two adjacent ends is formed to mate with the stepped portion such that the two adjacent ends are in the overlapping connection with each other.
According to one embodiment of the present disclosure, the frame body is formed into a separated structure and includes a top cover and a bottom cover in connection with each other.
According to one embodiment of the present disclosure, the end cover is provided with an auxiliary positioning member, an end of which is formed to extend into the sealed chamber so as to be capable of abutting the radiation source machine and limiting a horizontal play of the radiation source machine.
According to one embodiment of the present disclosure, the auxiliary positioning member is formed as a rod threadedly connected to the end cover.
The shield cover for a radiation source machine according to the embodiments of the present disclosure includes the frame body, the end cover body and the connecting member. The receiving chamber, the end opening and the ray exit are provided on the frame body. The end cover is movably connected at the end opening of the frame body by the connecting member. The radiation source machine is received in the receiving chamber of the frame body, with two ends extending into the corresponding sealed chambers of the end cover through the opening of the connecting member. The rays emitted by the radiation source machine can emit out only through the ray exit on the frame body to detect the object under detection, and the remaining rays are shielded by the shield cover for a radiation source machine to avoid the human body from being damaged. Meanwhile, by changing a relative position of the end cover to the frame body, a distance of the end cover from the end opening can be changed, so that the inner end surface of the end cover can just lie against the end surface of the radiation source machine, to limit a position of the radiation source machine, meeting a detection requirement for an object under detection without damaging the radiation source machine itself.
Another aspect of an embodiment of the present disclosure provides a security inspection apparatus, comprising: the shield cover for a radiation source machine as described above; a radiation source machine disposed in the receiving chamber; a U-shaped arm provided on an outside of the frame body and connected to the radiation source machine to make the radiation source machine in a suspended state in the receiving chamber.
According to an embodiment of the present disclosure, the U-shaped arm is engaged with the frame body with the frame body received in an U-shaped opening of the U-shaped arm, and the frame body is provided with a fixing seat at a position corresponding to the U-shaped arm, through which the U-shaped arm is connected to the frame body, wherein an adjusting pad is provided between a bottom of the U-shaped arm and the fixing seat
Features, advantages, and technical effects of exemplary embodiments of the present disclosure will be described below with reference to the accompanying drawings:
Wherein:
1—Shield cover for radiation source machine;
10—Frame body; 11—Top cover; 12—Bottom cover; 13—Receiving chamber; 14—End opening; 15—Ray exit; 16—Reinforced beam;
121—Main shielding body; 121a—Bottom plate; 121b—Side plate; 121c—Upper opening; 121d—Side opening;
122—Auxiliary shielding body; 123—Second hole; 124—Fourth hole;
20—End cover; 21—End plate; 22—Annular side plate; 23—Sealed chamber; 24—Through hole; 25—Auxiliary positioning member; 26—Reinforced rib;
30—Connecting member; 31—First connecting member; 32—Second connecting member; 33—Enclosing member; 34—Opening;
311—First mounting plate; 312—First connecting tab; 313—First hole; 314—Connector; 315—Positioning pin;
321—Second mounting plate; 322—Second connecting tab; 323—Third hole; 324—Connector;
40—Anti-radiation plate; 41—Stepped portion
2—U-shaped arm; 3—Connecting component; 4—Fixing seat;
410—Frame body connecting end; 420—U-shaped arm connecting end; 421—U-shaped groove; 422—Adjusting pad.
Features and exemplary embodiments of various aspects of the present disclosure will be described in detail below. In the following detailed description, numerous specific details are set forth to provide a thorough understanding of the present disclosure. It will be apparent to the person skilled in the art, however, that the present disclosure may be practiced without some of these details. The following description of embodiments is merely for providing a better understanding of the invention by providing examples of the present disclosure. In the drawings and the following description, at least some of known structures and techniques are not shown in order to avoid unnecessary obscuring of the present disclosure. For clarity, dimensions of some of structures may be exaggerated. Features, structures, or characteristics described below may be combined in any suitable manner in one or more embodiments. Further, terms “first”, “second”, “third”, etc. are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.
Words indicating orientation appearing in the following description are all directions shown in the drawings, and are not intended to limit the specific structure of the shied cover for a radiation source machine of the present disclosure. In the description of the present disclosure, it should be noted that terms “installation” and “connection” are to be understood broadly, and may be, for example, a fixed connection or a detachable connection, or an integral connection; they can be a direct or indirect connection. The specific meaning of the above terms in the present disclosure can be understood by the person skilled in the art depending on specific cases.
For a better understanding of the present disclosure, a shield cover for a radiation source machine 1 according to embodiments of the present disclosure will be described in detail below with reference to
As shown in
Specifically, as shown in
As shown in
As shown in
As shown in
In the embodiment, the frame body 10 includes two end openings 14. Therefore, one end cover 20 is provided at each end opening 14, and the end cover 20 is movably connected to the frame body 10 by the connecting member 30.
In an optional embodiment, as shown in
Specifically, as shown in
As shown in
Therefore, during use of the shield cover for a radiation source machine of the embodiments of the present disclosure, the radiation source machine is received in the receiving chamber 13 of the frame body 10, with two ends extending into corresponding sealed chambers 23 of the end covers 20 through the openings of the connecting members 30. The rays emitted from the radiation source machine can only be emitted out through the ray exit 15 on the top cover 11 to scan the object under detection, and the remaining rays will be shielded by the shield cover for a radiation source machine 1. Thus, the shield cover of the present disclosure can be effectively shield the useless rays generated by the radiation source machine, avoiding the human body from being damaged.
Further, by changing a relative position of the connecting member 30 to the frame body 10 and thereby changing a relative position of the end cover 20 to the frame body 10, a distance of the end cover 20 from the end opening 14 can be changed such that an inner end surface of the end cover 20 can just lie against an end surface of the radiation source machine. Thus, a position of the radiation source machine and thus a horizontal play of the radiation source machine can be limited, to meet a requirement on the detection of the object under detection.
In order to better limit the horizontal play of the radiation source machine, as shown in
It can be understood that the frame body 10 is not limited to the form in which the top cover 11 is connected with the bottom cover 12, and may also be in a form in which several covers are connected, for example, in a form in which one bottom cover 12 is connected with two top covers 11, as long as that a requirement of receiving the radiation source machine and effectively shielding the radiation source machine can be satisfied without damaging the radiation source machine itself.
Further, the bottom cover 12 is not limited to consisting of the main shielding body 121 and the auxiliary shielding body 122 mated with each other. In the case that the space is sufficiently large, it is possible for the bottom cover 12 to merely include a single main shielding body 121, and to place the radiation source machine and all the components, such as the high voltage controller, of the radiation source machine within the main shielding body 121 for shielding, without the need of providing the auxiliary shielding body 122.
Meanwhile, the first hole 313 is not limited to a strip-shaped hole. In an embodiment, the second hole 123 may be designed as a strip-shaped hole, or both of the first hole 313 and the second hole 123 may be designed as strip-shaped holes. The third hole 323 is not limited to a strip-shaped hole. In an embodiment, the fourth hole 124 may be designed as a strip-shaped hole, or both of the third hole 323 and the fourth hole 124 may be designed as strip-shaped holes. These embodiment are all possible, as long as that the first connecting member 31 is movably connected to the top cover 11 of the frame body 10 and the second connecting member 32 is movably connected to the bottom cover 12 of the frame body 10 so that the end cover 20 can move relative to the frame body 10 to adjust the distance of the end cover 20 from the end opening 14.
Since the connecting member 30 needs to be moved relative to the frame body 10 to adjust the distance of the end cover 20 from the end opening 14, as an optional embodiment, as shown in
In the shield cover for a radiation source machine 1 of the embodiment of the present disclosure, the frame body 10, the end cover 20 and the connecting member 30 all can be made of a radiation-proof material, to meet shielding requirements for the rays of the radiation source machine.
As a preferred embodiment, the frame body 10, the end cover 20 and the connecting member 30 may be made of a metal material or the like, and each of the frame body 10, the end cover 20 and the enclosing member 33 is provided with an anti-radiation plate, such as a lead plate on the respective wall surface, which can also meet an anti-radiation requirement for the rays of the radiation source machine, and meanwhile can ensure strength of the shield cover for a radiation source machine 1 with a lower cost.
As a preferred embodiment, the anti-radiation plate is provided on an inner wall surface of each of the frame body 10, the end cover 20 and the enclosing member 33. As strength of the anti-radiation plate, such as the lead plate, is not high, and a surface of the plate cannot be ensured to be completely flat, when adjacent ends of two adjacent anti-radiation plates are directly engaged with each other, it is impossible to ensure a complete closure and there is a gap therebetween. As shown in
Since the adjacent ends of the two adjacent anti-radiation plates 40 are in the overlapping connection with each other, even if there is a gap between the adjacent ends, the rays cannot emit out directly and leak from the gap, further improving a shielding effect of the shield cover for a radiation source machine 1. In this embodiment, the two adjacent anti-radiation plates 40 on the bottom cover 12 are only described as an example, and the overlapping connection between the adjacent ends of two adjacent anti-radiation plates 40 is not limited to the bottom cover 12. For the shield cover for a radiation source machine 1, it is possible for the anti-radiation plates 40 provided on all the members, for example, the top cover 11, the end cover 20, and the enclosing member 33, etc., to connect adjacent ends by the overlapping manner according to an anti-radiation requirement, to improve the shielding effect of the shield cover for a radiation source machine 1.
During use of the shield cover for a radiation source machine 1 provided by the embodiment of the present disclosure, the radiation source machine is placed in the receiving chamber 13, and the top cover 11, the bottom cover 12 and the end cover 20 of the frame body 10 are connected by the connecting member 30. A distance of the end cover 20 from the end opening 14 is changed by changing a relative position of the connecting member 30 to the frame body 10. After the relative position is adjusted and determined, the connector 314 in the first hole 313 and the second hole 123 and the connector 324 in the third hole 323 and the fourth hole 124 are tightened to lock the relative position of the end cover 20 to the frame body 10, so that the inner end surface of the end cover 20 and the end surface of the radiation source machine just lie against each other and the position of the radiation source machine is limited. A positioning pin 315 can be punched on the spot to ensure a repeated positioning accuracy when re-installing. Meanwhile, the auxiliary positioning member 25 on the end cover 20 is adjusted to abut the end face of the radiation source machine to better limit the horizontal play of the radiation source machine. The shield cover for a radiation source machine 1 provided by the embodiments of the present disclosure can effectively shield the useless rays generated by the radiation source machine to prevent the human body from being damaged, without damaging the radiation source machine itself, and is easy to spread and use.
As shown in
Specifically, connecting holes are correspondingly provided on the outer wall of the frame body 10 and the U-shaped arm 2. A connecting component 3 is connected to the radiation source machine through the corresponding connecting holes on the U-shaped arm 2 and the frame body 10, so that the radiation source machine is in the suspended state in the receiving chamber 13. Preferably, the suspended state means that side wall surfaces of the radiation source machine are not in contact with wall surfaces of the receiving chamber 13.
In an optional embodiment, as shown in
In the security inspection apparatus provided by the embodiments of the present disclosure, the rays emitted by the radiation source machine can only emit out through the ray exit 15 on the frame body 10 to scan the object under detection, and the remaining rays will be shielded by the shield cover for a radiation source machine 1. The useless rays generated by the radiation source machine can effectively shielded to avoid the human body from being damaged. By changing the relative position of the connecting member 30 to the frame body 10, the distance of the end cover 20 from the end opening 14 can be changed, such that the inner end surface of the end cover 20 can just lie against the end surface of the radiation source machine, to limit the horizontal position of the radiation source machine, meeting a detecting requirement for the object under detection. Moreover, the radiation source machine is in a suspended state in the receiving chamber 13, which does not cause damage to the radiation source machine itself and a force requirement for the radiation source machine is satisfied.
Although the present disclosure has been described with reference to the preferred embodiments thereof, various modifications may be made thereto and components may be replaced with equivalents without departing from the scope of the present disclosure. In particular, technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present disclosure is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.
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