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CN-224216596-U - Detection channel for security inspection CT and composite board structure thereof

CN224216596UCN 224216596 UCN224216596 UCN 224216596UCN-224216596-U

Abstract

The utility model relates to the technical field of detection channels, in particular to a detection channel for security inspection CT and a composite board structure thereof, wherein the detection channel for security inspection CT comprises a channel main body which is in a channel shape as a whole, two ends of the channel main body are used for being connected with a basic channel, the basic channel is communicated with a cavity of the channel main body and allows an object to be detected to pass through, the channel main body consists of a channel composite board, the edge of the channel main body is connected with the basic channel through a connecting board and a fastener, the channel composite board comprises a PMI foam layer, the outer side of the PMI foam layer is coated with a carbon fiber layer, the carbon fiber layer on the inner side of the channel main body is coated with an aramid fiber layer, the PMI foam layer is used as a core layer, the rigidity of the channel composite board can be improved, meanwhile, compared with carbon fibers, rays can better penetrate the detection channel, the carbon fiber layer is coated on the surface of the PMI foam layer, the surface wear resistance of the channel composite board can be enhanced, and the service life is prolonged.

Inventors

  • WANG YUJIA
  • CHEN JUNHAO
  • SUN JIANKANG
  • XIAO JIN

Assignees

  • 上海物影科技有限公司
  • 上海朱光亚战略科技研究院

Dates

Publication Date
20260508
Application Date
20250509

Claims (8)

  1. 1. The detection channel for security inspection CT comprises a channel main body (1) which is in a channel shape integrally, wherein two ends of the channel main body (1) are connected with a base channel (2), the base channel (2) is communicated with a cavity of the channel main body (1) to allow an object to be detected to pass through, and the detection channel is characterized in that the channel main body (1) consists of a channel composite board (101), and the edge of the channel main body (1) is connected with the base channel (2) through a connecting plate (3) and a fastener; The channel composite board (101) comprises a PMI foam layer (1001), a carbon fiber layer (1002) is coated on the outer side of the PMI foam layer (1001), and an aramid fiber layer (1003) is coated on the carbon fiber layer (1002) positioned on the inner side of the channel main body (1).
  2. 2. The detection channel for security inspection CT as claimed in claim 1, characterized in that the channel body (1) is a unitary structure consisting of a channel composite plate (101).
  3. 3. The detection channel for security inspection CT according to claim 1, wherein the channel main body (1) is composed of four channel composite boards (101), the channel composite boards (101) with corresponding surfaces have the same size, and are symmetrically distributed two by two, and are spliced into a "mouth-shaped" channel.
  4. 4. The detection channel for security inspection CT as claimed in claim 1, wherein the channel body (1) is composed of four identical L-shaped channel composite plates (101), the channel composite plates (101) are symmetrically distributed and spliced into a "mouth-shaped" channel.
  5. 5. A composite board structure, characterized in that, be applied to the detection channel that is used for the security inspection CT according to any one of claims 2-4, channel main part (1) is made by the channel composite board (101) that uses this composite board structure, channel composite board (101) include PMI foam layer (1001), the outside cladding of PMI foam layer (1001) has carbon fiber layer (1002), is located carbon fiber layer (1002) of channel main part (1) inboard and is covered with aramid fiber layer (1003).
  6. 6. The composite board structure according to claim 5, wherein the PMI foam layer (1001) has a thickness of 3-7mm, the carbon fiber layer has a thickness of 0.1-0.5mm, and the aramid fiber layer has a thickness of 0.1-0.5mm.
  7. 7. The composite board structure according to claim 5, wherein the channel composite board (101) is flat, the edges of two sides of the channel composite board (101) are provided with composite board step through holes (102), the inner walls of the composite board step through holes (102) are provided with reinforcing blocks (1005), and a glue layer (1004) is arranged between the reinforcing blocks (1005) and the inner walls of the composite board step through holes (102).
  8. 8. The composite board structure according to claim 7, wherein the transverse section of the channel composite board (101) is in a convex shape, a boss (103) is arranged on the inner side of the channel composite board (101), a composite board columnar through hole (104) is formed at the edge of the step part of the channel composite board (101), and a glue layer (1004) is arranged on the inner wall of the composite board stepped through hole (102).

Description

Detection channel for security inspection CT and composite board structure thereof Technical Field The utility model relates to the technical field of detection channels, in particular to a detection channel for security inspection CT and a composite board structure thereof. Background For a security inspection CT machine, a detection channel is one of the most important components, a conveying space is provided for an object to be detected, the detection channel comprises a base channel and a channel assembly, two ends of the channel assembly are open, and two ends of the channel assembly are connected with the base channel, so that a penetrating channel is formed. The basic channel is used for absorbing rays emitted by the ray source or scattered by the detected object, so that the rays are prevented from leaking out of the channel. The channel component enables rays emitted by the ray source to penetrate through one side of the channel component, pass through the detected object, penetrate out from the other side of the channel component, and then are absorbed by the detector, so that CT imaging is achieved. The structural strength of the channel component and the transmissivity of the rays directly influence the movement stability of the object to be detected and the detection effect of the rays on the object to be detected. The common material selection and connection mode of the channel component in the prior art is that the CT detection channel is made of carbon fiber composite board material (multi-layer carbon fiber and ring resin are combined), and the total thickness of the carbon fiber needed to be used is large to ensure enough rigidity, so that the ray penetration rate is relatively poor. Therefore, a CT detection channel that can ensure rigidity and is suitable in volume and can realize high transmittance needs to be developed. Disclosure of utility model The utility model aims to solve the defects in the prior art and provides a detection channel for security inspection CT. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The detection channel for the security inspection CT comprises a channel main body which is in a channel shape as a whole, wherein two ends of the channel main body are connected with a basic channel, the basic channel is communicated with a cavity of the channel main body and allows an object to be detected to pass through, the channel main body consists of a channel composite board, and the edge of the channel main body is connected with the basic channel through a connecting plate and a fastener; The channel composite board comprises a PMI foam layer, wherein the outer side of the PMI foam layer is coated with a carbon fiber layer, and the carbon fiber layer positioned on the inner side of the channel main body is coated with an aramid fiber layer. Preferably, the channel body is a unitary structure composed of a channel composite plate. Preferably, the channel main body is composed of four channel composite boards, the channel composite boards with corresponding surfaces have the same size, are symmetrically distributed between every two, and are spliced into a 'mouth-shaped' channel. Preferably, the channel main body is composed of four identical L-shaped channel composite plates, the channel composite plates are distributed in pairs and spliced into a 'kou' -shaped channel. Preferably, a composite board structure is applied to the detection channel for security inspection CT, the channel main body is made of the channel composite board applying the composite board structure, the channel composite board comprises a PMI foam layer, the outer side of the PMI foam layer is coated with a carbon fiber layer, the carbon fiber layer positioned at the inner side of the channel main body is coated with an aramid fiber layer, Preferably, the thickness of the PMI foam layer is 3-7mm, the thickness of the carbon fiber layer is 0.1-0.5mm, and the thickness of the aramid fiber layer is 0.1-0.5mm. Preferably, the channel composite board is in a flat plate shape, the edge of two sides of the channel composite board is provided with a composite board step through hole, the inner wall of the composite board step through hole is provided with a reinforcing block, and a glue layer is arranged between the reinforcing block and the inner wall of the composite board step through hole. Preferably, the transverse section of the channel composite board is in a convex shape, a boss is arranged on the inner side of the channel composite board, a composite board columnar through hole is formed in the edge of the step part of the channel composite board, and a glue layer is arranged on the inner wall of the composite board stepped through hole. The beneficial effects of the utility model are as follows: 1. According to the detection channel provided by the utility model, the PMI foam layer is adopted as the core layer, so that the rigidity of t