CN110780328A

CN110780328A - Automatic L-edge densimeter

Info

Publication number: CN110780328A
Application number: CN201911069497.1A
Authority: CN
Inventors: 康海英; 陶苗苗; 罗中艳; 郑维明; 范德军; 邵少雄; 张彤; 刘联伟
Original assignee: China Institute of Atomic of Energy
Current assignee: China Institute of Atomic of Energy
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-02-11

Abstract

The invention belongs to the technical field of spent fuel post-treatment, and particularly relates to an automatic L-edge densimeter, which comprises a robot (2), a camera (3), a PTN (5) and an L-edge densimeter (1), wherein the robot, the camera (3), the PTN (5) and the L-edge densimeter are remotely controlled by an upper computer (8) and are arranged in a glove box (4); the PTN (5) is used for conveying the rabbit running bottle filled with the sample, the robot (2) is used for grabbing and moving the rabbit running bottle, the camera (3) is used for recognizing the sample information on the rabbit running bottle, and the L-edge densimeter (1) is used for measuring the sample in the rabbit running bottle. The invention does not need manual sampling, does not generate radioactive waste, does not need pretreatment of samples, can directly measure, does not need personnel operation, saves manpower and material resources, can automatically complete measurement, does not need personnel on duty, greatly lightens the labor intensity and the dosage of workers, and greatly improves the working efficiency. The method also has the advantages of short analysis period, high efficiency, high speed and sample recycling.

Description

Automatic L-edge densimeter

Technical Field

The invention belongs to the technical field of spent fuel post-treatment, and particularly relates to an automatic L-edge densimeter.

Background

Spent fuel, also known as irradiated nuclear fuel, is spent nuclear fuel that has been subjected to irradiation, typically produced by a nuclear reactor in a nuclear power plant. The spent fuel post-treatment is the most critical link in the later stage of nuclear fuel cycle, and is the most extensive treatment mode for the spent fuel discharged from the nuclear reactor at present. Spent fuel reprocessing plants typically employ a PUREX (PUREX) process that includes primarily a uranium and plutonium co-decontamination cycle, a uranium decontamination cycle, and a plutonium decontamination cycle.

The L-edge densimeter is a commonly used analytical instrument for uranium purification and plutonium purification process points in the post-processing, and is used for analyzing the uranium plutonium concentration by using an off-line and on-line L-edge densimeter in an Arramos laboratory and a savanay river post-processing plant at the end of the last 70 th century. The L-edge densimeter is developed by the Chinese atomic energy science research institute in 2008, is developed into an off-line type L-edge densimeter, is applied to a post-processing radiochemical building, a Qinghua university and a Zhonghesi0 four Limited company by the Chinese atomic energy science research institute, and has a good application effect. The uranium purification and plutonium purification processes have multiple analysis points and a large number of samples. Off-line analysis requires a large amount of manual labor, a large amount of waste is generated in sampling measurement, and unnecessary irradiation to people is caused by missending a sample with strong radioactivity.

Disclosure of Invention

The invention discloses an L-edge densimeter analysis method based on earlier development, aiming at combining a pneumatic sample conveying technology, an automatic technology and a uranium/plutonium analysis technology to develop an automatic L-edge densimeter system, realizing automatic acquisition of sample information, automatic receiving and sending of a rabbit running bottle filled with a sample and automatic measurement of the sample, and finally realizing unattended full-automatic analysis, greatly reducing the labor intensity and the dosage of workers, and greatly improving the working efficiency and the personnel safety

In order to achieve the purposes, the invention adopts the technical scheme that the automatic L-edge densimeter comprises an L-edge densimeter, a robot, a camera and a PTN, wherein the L-edge densimeter, the robot, the camera and the PTN are arranged in a glove box and are remotely controlled by an upper computer; the PTN is used for being equipped with the conveying of running the rabbit bottle of sample, the robot is used for the snatching and removing of running the rabbit bottle, the camera is used for discerning run the sample information on the rabbit bottle, L limit densimeter is used for to the sample in running the rabbit bottle measures.

Further, the PTN is arranged on one side of the glove box, and the L-edge densimeter is arranged on the other side of the glove box.

Further, the camera is positioned above the L-edge densitometer.

Further, the device also comprises a sample replacing rack arranged at the bottom of the glove box, wherein the sample replacing rack is close to the L-edge densimeter.

The PLC is used for receiving instructions sent to the robot, the camera, the PTN and the L-edge densitometer by the upper computer and distributing the instructions to the robot, the camera, the PTN and the L-edge densitometer, and the PLC is also used for receiving feedback information of the instructions from the robot, the camera, the PTN and the L-edge densitometer and sending the feedback information to the upper computer.

Still further, the feedback information includes the sample information obtained by the camera identifying the rabbit running bottle.

Further, the glove box bottom is equipped with the stabilizer blade, the stabilizer blade bottom is equipped with pulley and locking device.

The invention has the beneficial effects that:

1. need not artifical sample, do not produce radioactive waste, save a large amount of materials.

2. The sample does not need to be pretreated, can be directly measured, does not need to be operated by personnel, and saves manpower and material resources.

3. The sample is automatically transported and measured, and the personnel attendance and manual intervention are not needed in a normal state.

4. Greatly reducing the labor intensity of workers and the irradiation dose, and greatly improving the working efficiency.

5. The analysis period is short, and the method is efficient and rapid.

6. The sample can be recycled.

Drawings

FIG. 1 is a schematic illustration of an automatic L-edge densitometer according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a relationship between instruction distribution and feedback information feedback of an automatic L-edge densitometer according to an embodiment of the present invention (DI/DO in the figure means Data Input/Data Output);

in the figure: 1-L edge densitometer, 2-robot, 3-camera, 4-glove box, 5-PTN, 6-sample replacement rack, 7-PLC, 8-host computer. Wherein PTN is an english abbreviation of Pneumatic sample transfer Network (Pneumatic transfer Network).

Detailed Description

The invention is further described below with reference to the figures and examples.

As shown in fig. 1, the automatic L-edge densitometer according to the present invention is composed of components such as an L-edge densitometer 1, a robot 2, a camera 3, a glove box 4, a PTN5, a sample replacing rack 6, a PLC7, and an upper computer 8.

The L-edge densitometer 1, the robot 2, the camera 3, and the PTN5 are provided inside the glove box 4; the PTN5 was disposed on one side of the glove box 4, the L-side densitometer 1 was disposed on the other side of the glove box 4, and the camera 3 was located above the L-side densitometer 1.

PTN5 is used for transfer of a rabbit running bottle containing a sample, robot 2 is used for gripping and moving of the rabbit running bottle, camera 3 is used for recognizing sample information on the rabbit running bottle, and L-edge densitometer 1 is used for measuring the sample in the rabbit running bottle.

A sample replacement rack 6 is provided at the bottom of the glove box 4, and the sample replacement rack 6 is close to the L-edge densitometer 1, and when the PTN5 is out of order, a rabbit bottle can be manually supplied through the sample replacement rack 6 for measurement.

The upper computer 8 and the PLC7 are arranged at the far end outside the glove box 4, and the upper computer 8 controls the robot 2, the camera 3, the PTN5 and the L-edge densimeter 1 to work at the far end through the PLC 7. The PLC7 is configured to receive an instruction sent by the host computer 8 to the robot 2, the camera 3, the PTN5, and the L-edge densitometer 1, and to distribute the instruction to the robot 2, the camera 3, the PTN5, and the L-edge densitometer 1, and the PLC7 is further configured to receive feedback information of the robot 2, the camera 3, the PTN5, and the L-edge densitometer 1 to the instruction, and to send the feedback information to the host computer 8. (the relationship between the instruction distribution and the feedback information is schematically shown in FIG. 2)

The feedback information includes sample information obtained by identifying the rabbit running bottle by the camera 3.

The glove box 4 bottom is equipped with the stabilizer blade, and the stabilizer blade bottom is equipped with pulley and locking device for moving and fixed of automatic L limit densimeter.

Finally, the practical application of the automatic L-edge densitometer provided by the invention is illustrated.

As shown in fig. 2, the apparatus in the glove box 4 is controlled by the upper computer 8, and the PTN5 receives a sample sending instruction sent by the upper computer 8 and simultaneously triggers a start signal of the L-edge densitometer 1, so that the L-edge densitometer 1 enters a state of preparing for measuring a sample.

When the PTN5 receives a sample receiving instruction, the sample (namely a rabbit running bottle filled with the sample) is automatically sent to the PTN5, after the sample arrives, the PTN5 feeds back information to the PLC7, the PTN5 is automatically opened through information exchange, the robot 2 executes the sample receiving instruction, automatically sends the sample to the PTN5 to be taken out and sent to the camera 3 to identify the sample information of the sample, if the identification result is correct (YES), the sample is sent to the L-edge densimeter 1 to be measured, and if the identification result is incorrect (NO), the sample is sent to the PTN5 to be sent back.

The sample measurement is accomplished, the measuring result (and L limit densimeter information) feeds back to host computer 8, host computer 8 receives measuring result (and L limit densimeter information) after, sends out the instruction of sending a kind to robot 2, robot 2 receives and send a kind instruction after, send the sample to PTN5, PTN5 puts the signal that targets in place to host computer 8 feedback after the sample targets in place, host computer 8 receives and targets in place the signal after, give the instruction for PTN5, directly send the sample away.

When the automatic sample feeding fails, the sample replacing rack 6 is adopted for measurement. Sample replacement frame 6 closely cooperates with the sample measurement position space in the glove box 4, runs the rabbit bottle and carries out the position fixed through sample replacement frame 6 and the measuring position when carrying out automatic measure through robot 2 unanimously, runs the rabbit bottle and closely cooperates with sample replacement frame 6, guarantees that the measuring position is fixed.

The device according to the present invention is not limited to the embodiments described in the specific embodiments, and those skilled in the art can derive other embodiments according to the technical solutions of the present invention, and also belong to the technical innovation scope of the present invention.

Claims

1. An automatic L-edge densimeter is characterized by comprising an L-edge densimeter (1), a robot (2), a camera (3) and a PTN (5), wherein the L-edge densimeter is remotely controlled by an upper computer (8) and is arranged in a glove box (4); PTN (5) are used for being equipped with the conveying of running the rabbit bottle of sample, robot (2) are used for the snatching and removing of running the rabbit bottle, camera (3) are used for discerning run the sample information on the rabbit bottle, L limit densimeter (1) are used for to sample in the running the rabbit bottle is measured.

2. The automatic L-edge densitometer of claim 1, wherein: the PTN (5) is arranged on one side of the glove box (4), and the L-edge densimeter (1) is arranged on the other side of the glove box (4).

3. The automatic L-edge densitometer of claim 2, wherein: the camera (3) is positioned above the L-edge densitometer (1).

4. An automatic L-edge densitometer as in claim 3, wherein: the device is characterized by further comprising a sample replacing rack (6) arranged at the bottom of the glove box (4), wherein the sample replacing rack (6) is close to the L-edge densimeter (1).

5. The automatic L-edge densitometer of claim 1, wherein: the robot is characterized by further comprising a PLC (7) arranged outside the glove box (4), wherein the PLC (7) is used for receiving instructions sent by the upper computer (8) to the robot (2), the camera (3), the PTN (5) and the L-edge densimeter (1) and distributing the instructions to the robot (2), the camera (3), the PTN (5) and the L-edge densimeter (1), and the PLC (7) is further used for receiving feedback information of the robot (2), the camera (3), the PTN (5) and the L-edge densimeter (1) to the instructions and sending the feedback information to the upper computer (8).

6. The automatic L-edge densitometer of claim 5, wherein: the feedback information comprises the sample information obtained by identifying the rabbit running bottle by the camera (3).

7. The automatic L-edge densitometer of claim 1, wherein: the glove box (4) bottom is equipped with the stabilizer blade, the stabilizer blade bottom is equipped with pulley and locking device.