CN-224231668-U - X-ray static CT (computed tomography) on-line coal quality detection system

Abstract

The application discloses an X-ray static CT (computed tomography) on-line coal quality detection system which comprises an electronic belt scale, a multi-point source optical machine, a multi-layer detector, a data acquisition card and a computer, wherein the electronic belt scale is arranged below a conveyor belt and is used for weighing coal flows on the conveyor belt, the multi-point source optical machine emits X-rays to the coal flows on the conveyor belt, the multi-layer detector receives the X-rays penetrating through the coal flows below the conveyor belt, the data acquisition card is in communication connection with the electronic belt scale, the multi-point source optical machine, the multi-layer detector and the computer and is used for transmitting data of the electronic belt scale, the multi-point source optical machine and the multi-layer detector to the computer, and the computer performs on-line coal quality detection according to the received data.

Inventors

• ZHANG HUI
• YI HONGCHANG
• LI JUNLI
• CHEN ZERUI
• WU ZHEN
• ZENG ZHI
• QIU RUI
• MA HAO

Assignees

• 清华大学

Dates

Publication Date

20260512

Application Date

20250410

Claims (5)

1. 1. An X-ray static CT on-line coal quality detection system is characterized by comprising an electronic belt scale, a multi-point source optical machine, a multi-layer detector, a data acquisition card and a computer, wherein, The electronic belt scale is arranged below the conveyor belt and is used for weighing coal flow on the conveyor belt; The multi-point source optical machine emits X-rays to a coal flow on a conveyor belt, and the multi-layer detector receives the X-rays penetrating through the coal flow below the conveyor belt; The data acquisition card is in communication connection with the electronic belt scale, the multi-point source optical machine, the multi-layer detector and the computer and is used for sending data of the electronic belt scale, the multi-point source optical machine and the multi-layer detector to the computer; And the computer performs on-line coal quality detection according to the received data.
2. 2. The X-ray static CT on-line coal quality detection system of claim 1, wherein the electronic belt scale comprises a load cell that measures the weight of the coal flow on the belt and a speed measuring device that measures the running speed of the conveyor belt.
3. 3. The system according to claim 1, wherein the multi-target X-ray source of the multi-point source optical machine is arranged on a plane perpendicular to the movement direction of the coal flow, the multi-point source optical machine sequentially switches different targets to emit beams, and emits X-rays with specific energy spectrums to the coal flow on the conveyor belt, the directions of the X-rays emitted by the different targets are different, and the scanning range of the multi-target X-ray source covers the cross section of the coal flow.
4. 4. The X-ray static CT on-line coal quality detection system of claim 1, wherein the multi-layer detector is comprised of N rows of detectors, each row of detectors receiving X-rays of a corresponding energy.
5. 5. The X-ray static CT on-line coal quality detection system of claim 1, further comprising: The control module is in communication connection with the electronic belt scale, the multi-point source optical machine, the multi-layer detector and the computer and is used for receiving a control instruction sent by the computer and controlling the electronic belt scale, the multi-point source optical machine and the multi-layer detector.

Description

X-ray static CT (computed tomography) on-line coal quality detection system Technical Field The utility model relates to the technical field of coal quality detection, in particular to an X-ray static CT (computed tomography) on-line coal quality detection system. Background Currently, on-line measurement of ash content and element components of coal mainly depends on the following technologies of (1) a dual-energy gamma ray transmission method, (2) an X-ray transmission method, (3) neutron instantaneous gamma ray activation analysis, (4) an X-ray fluorescence technology and the like. The prior art has the defects that (1) the dual-energy gamma ray transmission method uses a radioactive source, is inconvenient to manage, is greatly influenced by the change of element components in coal, and is only suitable for measuring the coal from a single mine point. (2) The X-ray transmission method adopts a beam of ray transmission coal flow to measure ash, the transmitted coal flow is regarded as uniform medium in a calculation model, and particles with different components are not uniform in the actual coal flow, so that the model can bring errors. (3) The neutron instantaneous gamma ray activation analysis adopts a neutron radiation source, so that the risk is higher, the management is unchanged, the half-life period of the neutron source is short, and the replacement period is short. (4) The X-ray fluorescence technology has low radiation energy and weak penetrating power, and can not analyze coal with large thickness. Disclosure of Invention The present utility model aims to solve at least one of the technical problems in the related art to some extent. Therefore, an object of the present utility model is to provide an online coal quality detection system based on X-ray static CT. The utility model adopts an electronic belt scale to weigh the coal flow on a conveyor belt, adopts a multi-target X-ray source and a multi-layer detector to realize multi-functional static CT scanning of the coal flow, and realizes on-line coal quality detection according to static CT scanning data and weighing data. The whole measuring process is real-time and non-contact, and the material conveying can not be influenced. In order to achieve the above purpose, an embodiment of the utility model provides an X-ray static CT on-line coal quality detection system, which comprises an electronic belt scale, a multi-point source optical machine, a multi-layer detector, a data acquisition card and a computer, wherein, The electronic belt scale is arranged below the conveyor belt and is used for weighing the coal flow on the conveyor belt; The multi-point source optical machine emits X-rays to the coal flow on the conveyor belt, and the multi-layer detector receives the X-rays penetrating through the coal flow below the conveyor belt; The data acquisition card is in communication connection with the electronic belt scale, the multi-point source optical machine, the multi-layer detector and the computer and is used for transmitting data of the electronic belt scale, the multi-point source optical machine and the multi-layer detector to the computer; And the computer performs on-line coal quality detection according to the received data. The X-ray static CT on-line coal quality detection system according to the above embodiment of the present utility model may further have the following additional technical features: Further, in one embodiment of the utility model, the electronic belt scale includes a load cell that measures the weight of the coal flow on the belt and a speed measuring device that measures the running speed of the conveyor belt. Further, in one embodiment of the present utility model, the multi-target X-ray sources of the multi-point source optical machine are arranged on a plane perpendicular to the movement direction of the coal flow, the multi-point source optical machine sequentially switches different targets to emit beams, and the X-rays with specific energy spectrums are emitted to the coal flow on the conveyor belt, the directions of the X-rays emitted by the different targets are different, and the scanning range of the multi-target X-ray sources covers the cross section of the coal flow. Further, in one embodiment of the utility model, the multi-layer detector is comprised of N rows of detectors, each row of detectors receiving X-rays of corresponding energy. Further, in one embodiment of the present utility model, the method further includes: The control module is in communication connection with the electronic belt scale, the multi-point source optical machine, the multi-layer detector and the computer and is used for receiving control instructions sent by the computer and controlling the electronic belt scale, the multi-point source optical machine and the multi-layer detector. Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obv