CN111487263A - Detector box and security inspection equipment - Google Patents

Detector box and security inspection equipment Download PDF

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Publication number
CN111487263A
CN111487263A CN201910079381.XA CN201910079381A CN111487263A CN 111487263 A CN111487263 A CN 111487263A CN 201910079381 A CN201910079381 A CN 201910079381A CN 111487263 A CN111487263 A CN 111487263A
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CN
China
Prior art keywords
substrate
mounting
detector
collimator
detector box
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Pending
Application number
CN201910079381.XA
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Chinese (zh)
Inventor
周志阳
邹一梅
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Tianjin Kaishi Machinery Technology Co ltd
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Tianjin Kaishi Machinery Technology Co ltd
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Priority to CN201910079381.XA priority Critical patent/CN111487263A/en
Publication of CN111487263A publication Critical patent/CN111487263A/en
Pending legal-status Critical Current

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    • 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
    • G01N23/046—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 using tomography, e.g. computed tomography [CT]
    • 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
    • G01V5/20—Detecting prohibited goods, e.g. weapons, explosives, hazardous substances, contraband or smuggled objects
    • G01V5/22—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays
    • G01V5/226—Active interrogation, i.e. by irradiating objects or goods using external radiation sources, e.g. using gamma rays or cosmic rays using tomography

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Pulmonology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Theoretical Computer Science (AREA)
  • Engineering & Computer Science (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Measurement Of Radiation (AREA)

Abstract

The invention discloses a detector box and security inspection equipment, and belongs to the technical field of security inspection, wherein the detector box comprises an integrally formed main body part, the main body part comprises a substrate, a support body and an installation body, the substrate comprises a first substrate and a second substrate which are arranged in parallel at intervals, and an accommodating space is formed between the first substrate and the second substrate; the support body is connected with the first substrate and the second substrate; the mounting body is arranged in the accommodating space and connected with the substrate, the mounting body is at least provided with a layer of mounting surface, the mounting surface is a plane and extends in an arc shape, the collimator is connected with the mounting surface, and the detector is connected with the collimator, so that the size of the mounting body is reduced, and the weight and the space occupation are reduced. The security inspection equipment comprises the detector box. The main part integrated into one piece, stability is high, and all installation faces all are accomplished with same benchmark processing, and the machining precision is high, guarantees the accuracy of testing result, and can not take place the aversion phenomenon at rotatory in-process.

Description

Detector box and security inspection equipment
Technical Field
The invention relates to the technical field of security inspection, in particular to a detector box and security inspection equipment.
Background
Computed Tomography (CT) imaging devices are widely used in the fields of medical diagnosis, baggage security inspection, and the like. The X-ray detector comprises a detection area for a patient or an object to pass through, wherein an X-ray generating device (a ray source for short) and a plurality of X-ray receiving devices (namely detector modules) are arranged in the detection area.
Referring to fig. 1, according to the CT imaging principle, it is required that the radiation source 101 and all the detector modules 102 maintain a precise positional relationship, and a plurality of the detector modules 102 are distributed on a segment of an arc centered on the radiation source 101. In order to reduce interference of scattered rays to the detector module 102 caused by scattered rays when X-rays penetrate through an object, a collimator 103 is generally disposed above the detector module 102, where the collimator 103 corresponds to the detector module 102 in position, and the collimator 103 is configured to split a ray beam emitted from the radiation source 101 into a plurality of fan-shaped ray beams. The detector box 104 is used to carry the collimator 103 and the detector module 102 and provide them with high precision in mounting positioning.
The existing detector box 104 is mostly of a split structure, and all the components are fastened through bolts. Alternatively, the detector box 104 is fabricated by welding. Since the CT is operated, the radiation source 101 and the detector box 104 need to rotate together at high speed to scan the detection region, and the rotation direction is indicated by the arrow in fig. 1. The detector box 104 with the split structure has poor precision, is not easy to ensure accurate alignment of the radiation source 101 and the detector module 102, and is easy to shift in the rotation process, so that the detection result is inaccurate. The welded detector box 104 is heavy, the weld is prone to cracking during high-speed rotation, stability is poor, installation accuracy is difficult to guarantee, and imaging quality is poor.
Disclosure of Invention
The invention aims to provide a detector box and security inspection equipment, and aims to solve the technical problem of poor imaging quality caused by low installation precision of the detector box in the prior art.
As the conception, the technical scheme adopted by the invention is as follows:
the invention has the beneficial effects that:
a sonde box comprising an integrally formed body portion, the body portion comprising:
the substrate comprises a first substrate and a second substrate which are arranged in parallel at intervals, and an accommodating space is formed between the first substrate and the second substrate;
a support connecting the first substrate and the second substrate;
the mounting body is positioned in the accommodating space and connected with the substrate, the mounting body is at least provided with a layer of mounting surface, the mounting surface is a plane and extends in an arc shape, the collimator is connected with the mounting surface, and the detector is connected with the collimator.
The collimator is arranged on the detector, the connecting plate is located on one side, far away from the collimator, of the detector, and the connecting plate is connected with the mounting body and abutted to the detector.
Wherein, one side of the connecting plate close to the detector is provided with a bulge which is abutted against the detector.
The collimator is connected with the mounting body through screws, and the connecting plate is connected with the mounting body through screws.
The connecting plate and the mounting body are provided with positioning pins therebetween, and the positioning pins are sequentially connected with the mounting body, the collimator, the detector and the connecting plate.
The mounting body is provided with a plurality of layers of mounting surfaces which are arranged at intervals along the radial direction, and the plurality of layers of mounting surfaces are not shielded in the radial direction.
Wherein, the installation body includes first mounting panel and the second mounting panel that parallel interval set up, first mounting panel with first base connection, the second mounting panel with the second base connection, the lateral surface of first mounting panel with the lateral surface of second mounting panel forms the installation face, the both ends of collimater are connected respectively first mounting panel with the second mounting panel.
And a notch is arranged on the outer side of the first substrate, and an avoiding space is formed between the notch and the second substrate.
The surface of one side, far away from the first substrate, of the second substrate is a positioning surface, and a plurality of mounting holes are formed in the positioning surface.
The positioning surface is a step surface and comprises at least two planes which are arranged in parallel at intervals, and each plane is provided with the mounting hole.
The support bodies are two and two support bodies are respectively arranged at two ends of the substrate, and the support bodies are of hollow structures.
Wherein a plurality of reinforcing plates are arranged between the first substrate and the second substrate.
A security device comprising a detector box as described above.
According to the detector box provided by the invention, the first substrate and the second substrate are arranged in parallel at intervals, so that an accommodating space is formed between the first substrate and the second substrate, the support body plays a role in supporting and increasing the strength, the mounting surface of the mounting body is used for mounting the collimator, the detector is connected with the collimator, the size of the mounting body is reduced, the weight and the space occupation are reduced, the mounting surface is a plane and extends in an arc shape, and the circle center of the arc shape is the position for mounting the ray source; all the detectors and the collimators corresponding to the ray sources are installed on the main body part through integrally molding the main body part, and all the installation surfaces are processed on the same reference, so that higher processing precision can be ensured, and the accuracy of a detection result is further ensured; and because main part integrated into one piece, stability is high, can not take place the aversion phenomenon at rotatory in-process, further guarantees the accuracy of testing result.
Drawings
FIG. 1 is a schematic diagram of CT imaging;
FIG. 2 is a schematic diagram of a detector box according to an embodiment of the present invention;
FIG. 3 is a side view of a detector box provided by an embodiment of the present invention;
FIG. 4 is a partial schematic view of FIG. 3
FIG. 5 is a schematic view of an orientation of a detector box according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of another orientation of a detector box according to an embodiment of the present invention;
FIG. 7 is a first partial schematic structural diagram of a detector box according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a partial structure of a detector box according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another detector box provided in the embodiment of the present invention.
In fig. 1:
101. a radiation source; 102. a detector module; 103. a collimator; 104. a detector box;
in fig. 2-9:
10. a collimator; 20. a detector;
1. a main body portion; 2. a connecting plate; 3. positioning pins;
11. a first substrate;
12. a second substrate; 121. a lug; 122. a positioning pin hole; 123. a main body mounting hole;
13. a support body; 131. a hollow interior cavity;
14. a mounting surface; 141. a first mounting plate; 142. a second mounting plate.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
Referring to fig. 2 to 8, an embodiment of the present invention provides a detector box for being mounted on a device having a CT imaging system, such as a medical device and a security device, and capable of carrying a detector 20 and a collimator 10 disposed corresponding to the detector 20.
The detector box comprises an integrally formed main body part 1, the main body part 1 comprises a substrate, a support body 13 and an installation body, the substrate comprises a first substrate 11 and a second substrate 12 which are arranged in parallel at intervals, an accommodating space is formed between the first substrate 11 and the second substrate 12, the support body 13 is connected with the first substrate 11 and the second substrate 12, the effects of supporting and increasing strength are achieved, the installation body is arranged in the accommodating space and connected with the substrates, the installation body at least comprises a layer of installation surface 14, the installation surface 14 is a plane and extends in a circular arc shape, the collimator 10 is connected with the installation surface 14, the detector 20 is connected with the collimator 10, and the circle center of the circular arc shape is the position for installing the ray source.
The collimator 10 is connected with the mounting surface 14, and the detector 20 is connected with the collimator 10, so that the size of a mounting body is reduced, and the weight and the space occupation are reduced; by integrally forming the main body part 1, all the detectors 20 and the collimators 10 corresponding to the ray sources are installed on the main body part 1, and all the installation surfaces 14 are processed by the same reference, so that higher processing precision can be ensured, and the accuracy of a detection result is further ensured; and because main part 1 integrated into one piece, stability is high, can not take place the aversion phenomenon in rotatory process, further guarantees the accuracy of testing result.
In this embodiment, there are two supporting bodies 13, and the two supporting bodies 13 are respectively disposed at two ends of the first substrate 11. One end of the support 13 is connected to the first substrate 11, and the other end is connected to the second substrate 12. In the use process, the main body part 1 rotates at a high speed and can be subjected to a large centrifugal force, and the two supporting bodies 13 are arranged to ensure the stress balance.
The support body 13 is of a hollow structure, so that the weight is reduced, meanwhile, the sufficient bending-resistant section coefficient can be ensured, the structural rigidity is ensured, the mass is reduced, the centrifugal force is reduced, the deformation is reduced, the detection precision is ensured, and the service life is prolonged.
In the present embodiment, the cross-sectional shape of the hollow cavity 131 of the support body 13 is a polygon. Of course, the cross-sectional shape of the hollow cavity 131 of the support body 13 can be set to be circular, elliptical, triangular or irregular combined by straight lines and curved lines according to practical situations, and is not limited herein. To facilitate the casting process, the two ends of the hollow cavity 131 of the supporting body 13 respectively penetrate through the first substrate 11 and the second substrate 12.
In order to ensure the stability of the installation of the detector 20 and the collimator 10, a connecting plate 2 is arranged on one side of the detector 20 away from the collimator 10, and the connecting plate 2 is connected with the installation body and abutted against the detector 20, so that the displacement of the detector 20 in the rotation process is avoided.
One side of the connecting plate 2 close to the detector 20 is provided with a bulge, and the bulge is abutted against the detector 20, so that the deformation of the detector 20 caused by centrifugal force in the rotating process is reduced.
The collimator 10 is connected with the mounting body through screws, and the connecting plate 2 is connected with the mounting body through screws, so that the mounting and dismounting are facilitated. In order to ensure the accuracy of screw installation, a positioning pin 3 is arranged between the connecting plate 2 and the installation body, and the positioning pin 3 is sequentially connected with the installation body, the collimator 10, the detector 20 and the connecting plate 2.
In addition, the mounting body may have a plurality of layers of radially spaced mounting surfaces 14, each mounting surface 14 having a collimator 10 and a detector 20 disposed thereon, as desired. In order to ensure that the radiation of the radiation source can strike all the mounting surfaces 14, the multiple mounting surfaces 14 are not shielded in the radial direction.
The mounting body includes first mounting panel 141 and second mounting panel 142 that parallel interval set up, and first mounting panel 141 is connected with first base plate 11, and second mounting panel 142 is connected with second base plate 12, and the lateral surface of first mounting panel 141 and the lateral surface of second mounting panel 142 form installation face 14. The collimator 10 is just opposite to the space between the first mounting plate 141 and the second mounting plate 142, so that the collimator is aligned to the ray source, and two ends of the collimator 10 are respectively connected with the first mounting plate 141 and the second mounting plate 142, so that the mounting stability is ensured, and the high-speed rotation is prevented from loosening. The detector 20 is located outside the collimator 10, that is, the radiation source irradiates the detector 20 through the collimator 10, the detector 20 is installed on the collimator 10, and two ends of the connecting plate 2 are respectively connected with the first mounting plate 141 and the second mounting plate 142, so as to ensure the stability of installation.
The first mounting plate 141 has a first surface, and the second mounting plate 142 has a second surface overlapping the first surface, the first surface and the second surface forming the mounting surface 14. Both ends of the collimator 10 are connected to the first and second faces, respectively.
In the present embodiment, the main body 1 is integrally cast from an aluminum alloy. After casting, the casting is clamped, the mounting surface 14 is formed by machining, clamping is only needed once, all the mounting surfaces 14 are machined according to the same standard, and machining precision is guaranteed.
The first substrate 11 and the second substrate 12 are both arc-shaped plates, and the concave surfaces of the arc-shaped plates face the ray source. The first substrate 11 has a first inner surface, the second substrate 12 has a second inner surface, the first inner surface and the second inner surface are overlapped, and the first inner surface and the second inner surface are both arc surfaces.
The first substrate 11 has a first outer surface and the second substrate 12 has a second outer surface. A notch (not shown) may be formed on the outer side of the first substrate 11, and an escape space is formed between the notch and the second substrate 12. The notch is arranged so that the first outer surface is offset from the second outer surface, i.e. the first outer surface is not coincident with the second outer surface. The notch is arranged, so that the weight is reduced, a avoidance space is provided for machining the mounting surface 14, and the machinability is improved. On the other hand, the first base plate 11 is small in size, the bending moment of the first base plate 11 with respect to the support 13 is reduced, and the deformation is reduced, while the second base plate 12 is large in size, and the strength of the main body 1 is increased. Further, in order to secure structural strength, a plurality of reinforcing ribs may be provided on a surface of the first substrate 11 away from the second substrate 12 at the time of casting, the plurality of reinforcing ribs being arranged in a staggered manner to increase the strength of the first substrate 11.
The notch may be an arcuate notch. The notch is arranged in the middle of the first substrate 11 and is symmetrical relative to the axis of the first substrate 11, so that the symmetry of the first substrate 11 is ensured, and uneven stress in the rotating process is prevented.
A plurality of reinforcing plates (not shown) may be disposed between the first substrate 11 and the second substrate 12. One end of the reinforcing plate is connected to the first substrate 11, and the other end of the reinforcing plate is connected to the second substrate 12. The reinforcing plate is arranged in the accommodating space between the first substrate 11 and the second substrate 12 and located outside the mounting body, and the reinforcing plate plays a role in supporting and increasing strength.
The reinforcing plate is connected with the first base plate 11 and the second base plate 12 through bolts. The first substrate 11 is provided with a first mounting hole for mounting the reinforcing plate, and the second substrate 12 is provided with a second mounting hole corresponding to the reinforcing plate. In order to reduce the processing strength, the second substrate 12 is provided with a boss, the second mounting hole is formed in the boss, and during processing, only the processing precision of the surface of the boss needs to be ensured.
In addition, the main body portion 1 may further include a third substrate, which is located on a side of the second substrate 12 away from the first substrate 11 and is parallel to the second substrate 12 at an interval. A detector 20 and a collimator 10 may also be mounted between the third substrate and the second substrate 12.
When the detector box is used, the detector box needs to be installed and fixed, therefore, a plurality of installation holes are formed in the second substrate 12, one side surface, far away from the first substrate 11, of the second substrate 12 is a positioning surface, the installation holes are formed in the positioning surface, all installation holes are machined by taking the positioning surface as a reference, and machining precision is guaranteed.
In order to reduce the size of the second substrate 12, a plurality of lugs 121 may be disposed on the second substrate 12, and each lug 121 is provided with a mounting hole.
The mounting holes are divided into a positioning pin hole 122 and a main body mounting hole 123 and are used for positioning and fastening when the detector box is mounted. The mounting surface 14 is machined on the casting, and the first mounting hole, the second mounting hole, the positioning pin hole 122 and the main body mounting hole 123 are machined on the casting on the same standard, so that the machining precision is guaranteed.
Referring to fig. 9, the positioning surface on the second substrate 12 may be a stepped surface, and includes at least two planes disposed in parallel at an interval, and each plane is provided with a mounting hole. The positioning pin holes 122 can be arranged on one plane, and the main body mounting holes 123 are arranged on the other plane, so that stress points of the detector box are changed from one plane to two planes in the using process, the plane stress is changed into space stress, and the deformation under the centrifugal force can be better limited.
The embodiment of the invention also provides security inspection equipment which comprises the detector box. The detector box can carry the detector 20 and the collimator 10 and is mounted on a security inspection device. Because the first substrate 11 and the second substrate 12 are both arc-shaped plates, the ray source is located at the center of the arc-shaped plates, and a detection area for objects to pass through is formed between the ray source and the detector box.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but rather is susceptible to various changes and modifications without departing from the spirit and scope of the invention, which changes and modifications are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (13)

1. A sonde case comprising an integrally formed body portion (1), the body portion (1) comprising:
the substrate comprises a first substrate (11) and a second substrate (12) which are arranged in parallel at intervals, and an accommodating space is formed between the first substrate (11) and the second substrate (12);
a support (13) connecting the first substrate (11) and the second substrate (12);
the mounting body is located in the accommodating space and connected with the substrate, the mounting body is at least provided with a layer of mounting surface (14), the mounting surface (14) is a plane and extends in an arc shape, the collimator (10) is connected with the mounting surface (14), and the detector (20) is connected with the collimator (10).
2. A detector box according to claim 1, characterized by further comprising a connection plate (2), the connection plate (2) being located on a side of the detector (20) remote from the collimator (10), the connection plate (2) being connected to the mounting body and abutting the detector (20).
3. The detector box according to claim 2, characterized in that the side of the connection plate (2) close to the detector (20) is provided with a projection, which abuts the detector (20).
4. A detector box according to claim 2, characterized in that the collimator (10) is screwed to the mounting body, and the connection plate (2) is screwed to the mounting body.
5. The detector box according to claim 4, characterized in that a positioning pin (3) is arranged between the connection plate (2) and the mounting body, the positioning pin (3) connecting the mounting body, the collimator (10), the detector (20) and the connection plate (2) in sequence.
6. A detector box according to any one of claims 1-5, characterized in that the mounting body has a plurality of layers of the mounting surfaces (14) arranged at radial intervals, the layers of the mounting surfaces (14) being radially unobstructed.
7. The detector box according to any one of claims 1 to 5, characterized in that the mounting body comprises a first mounting plate (141) and a second mounting plate (142) which are arranged in parallel and spaced apart, the first mounting plate (141) is connected with the first substrate (11), the second mounting plate (142) is connected with the second substrate (12), the outer side surface of the first mounting plate (141) and the outer side surface of the second mounting plate (142) form the mounting surface (14), and two ends of the collimator (10) are respectively connected with the first mounting plate (141) and the second mounting plate (142).
8. Detector box according to any one of claims 1-5, characterised in that the first base plate (11) is provided with a recess on its outer side, which recess forms an escape space with the second base plate (12).
9. The detector box according to any one of claims 1-5, characterized in that a surface of the second substrate (12) away from the first substrate (11) is a positioning surface, and the positioning surface is provided with a plurality of mounting holes.
10. The detector box of claim 9, wherein the positioning surface is a stepped surface comprising at least two flat surfaces spaced apart in parallel, each of the flat surfaces having the mounting hole disposed therein.
11. The detector box according to any one of claims 1 to 5, characterized in that the support body (13) has two and two support bodies (13) are respectively arranged at two ends of the substrate (11), and the support bodies (13) are hollow structures.
12. Detector box according to any one of claims 1-5, characterised in that several stiffening plates are arranged between the first base plate (11) and the second base plate (12).
13. A security device comprising a detector box according to any of claims 1 to 12.
CN201910079381.XA 2019-01-28 2019-01-28 Detector box and security inspection equipment Pending CN111487263A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910079381.XA CN111487263A (en) 2019-01-28 2019-01-28 Detector box and security inspection equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910079381.XA CN111487263A (en) 2019-01-28 2019-01-28 Detector box and security inspection equipment

Publications (1)

Publication Number Publication Date
CN111487263A true CN111487263A (en) 2020-08-04

Family

ID=71794171

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910079381.XA Pending CN111487263A (en) 2019-01-28 2019-01-28 Detector box and security inspection equipment

Country Status (1)

Country Link
CN (1) CN111487263A (en)

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