CN-117657782-B - Powder conveying device and radioactive powder treatment system

Abstract

The invention discloses a powder conveying device and a radioactive powder treatment system, which are used for effectively controlling radioactive powder in the conveying device in the conveying process and meeting the requirements of factory cleaning and personnel radiation protection. The powder delivery device includes a vacuum assembly and a storage assembly. The vacuum component comprises a vacuum feeder (6), a vacuum generator (12) and a negative pressure generator (4). The feed inlet of the vacuum feeder (6) is used for sucking powder. The vacuum generator (12) is arranged in the vacuum feeder (6) and is close to a feed inlet of the vacuum feeder (6). The negative pressure generator (4) is communicated with the vacuum feeding machine (6) and is used for maintaining the negative pressure environment of the vacuum assembly. The storage component comprises a storage tank (7), wherein the storage tank (7) is arranged below the vacuum feeding machine (6) and is communicated with the vacuum feeding machine (6) and used for storing powder entering the vacuum feeding machine (6) and conveying the stored powder outwards.

Inventors

• MA JING
• LI QICHAO
• XU KAI
• LU JINCHENG
• HOU LIUDONG
• WANG DONG
• JI LEIMING
• XING YUNTONG
• QIN YONGQUAN
• YANG SHUO

Assignees

• 中国核电工程有限公司

Dates

Publication Date

20260505

Application Date

20231110

Claims (11)

1. 1. A powder delivery device for delivering a powder having radioactivity loaded in a product tank (2), characterized by comprising a vacuum assembly and a storage assembly; the vacuum assembly includes: a vacuum feeder (6) with a feed inlet for sucking powder; a vacuum generator (12) disposed within the vacuum loader (6) and adjacent to a feed inlet of the vacuum loader (6) for producing a vacuum at the feed inlet of the vacuum loader (6) to draw in the powder, and, A negative pressure generator (4) communicated with the vacuum feeding machine (6) for maintaining the negative pressure environment of the vacuum assembly, and Product bucket emptys glove box (3) between product bucket (2) and vacuum material loading machine (6), product bucket emptys glove box (3) include: a case (21); A handling assembly (22) arranged on the case (21); A driving assembly (23) fixed inside the case (21) and electrically connected to the operating assembly (22), and, A suction gun (24) which is fixed on the driving assembly (23) and is positioned in the box body (21), one end of the suction gun is communicated with a feed inlet of the vacuum feeding machine (6) through a telescopic hose, and the other end of the suction gun extends out of the box body (21) and then extends into the product barrel (2); Wherein the driving component (23) is used for driving the suction gun (24) to move under the control of the control component (22); The storage assembly comprises a storage tank (7), wherein the storage tank (7) is arranged below the vacuum feeding machine (6) and is communicated with the vacuum feeding machine (6) and used for storing powder entering the vacuum feeding machine (6) and conveying the stored powder outwards.
2. 2. Powder delivery device according to claim 1, characterized in that the vacuum generator (12) is a jet vacuum generator, the air inlet of which communicates with a compressed air duct through the outer wall of the vacuum feeder (6).
3. 3. A powder delivery device according to claim 2, characterized in that the powder delivery device further comprises a control assembly comprising a controller (13) and a first control valve (14); The first control valve (14) is arranged on the jet type vacuum generator, and the first control valve (14) is electrically connected with the controller (13); The controller (13) is used for controlling the first control valve (14) to open the jet type vacuum generator under the condition of receiving a first operation signal for sucking powder from a feed inlet of the vacuum feeder (6).
4. 4. A powder delivery device according to claim 3, characterized in that the outlet of the reservoir (7) is in communication with a dissolution tank (10); The control assembly further comprises a pneumatic valve (9) arranged on a first pipeline between the storage tank (7) and the dissolution tank (10), and the pneumatic valve (9) is electrically connected with the controller (13); The controller (13) is used for controlling the pneumatic valve (9) to open the first pipeline under the condition of receiving a second operation signal for conveying powder through the first pipeline.
5. 5. The powder delivery device according to claim 4, characterized in that the storage assembly further comprises a metering tank (8) arranged below the storage tank (7), the metering tank (8) being in communication with the storage tank (7), a discharge pipe of the metering tank (8) extending into the dissolution tank (10); The pneumatic valve (9) is arranged on the discharging pipe of the metering tank (8).
6. 6. A powder delivery device according to claim 3, characterized in that the vacuum assembly further comprises a filter (15) arranged in the vacuum feeder (6), the filter (15) being adapted to filter the gas flowing to the negative pressure generator (4).
7. 7. The powder conveying device according to claim 6, characterized in that the vacuum assembly further comprises a blowback gas reservoir (16) provided on the vacuum feeder (6), the outlet of the blowback gas reservoir (16) being directed towards the filter (15); The control assembly further comprises a second control valve (17) arranged on the air outlet of the back-flushing air storage tank (16), and the second control valve (17) is electrically connected with the controller (13); The controller (13) is used for controlling the second control valve (17) to open the air outlet of the blowback air storage tank (16) under the condition that a third operation signal for blowback of the filter (15) is received.
8. 8. A powder delivery device according to claim 3, characterized in that the control assembly further comprises a vibrator (18) provided on the vacuum feeder (6), the vibrator (18) being electrically connected to the controller (13); The controller (13) is used for controlling the vibrator (18) to vibrate under the condition of receiving a fourth operation signal for conveying the powder in the vacuum feeder (6) downwards.
9. 9. A powder delivery device according to claim 3, characterized in that the control assembly further comprises a third control valve (19) arranged on the second line between the vacuum feeder (6) and the storage tank (7), the third control valve (19) being electrically connected to the controller (13); The controller (13) is configured to control the third control valve (19) to open the second pipeline in case of receiving a fifth operation signal for conveying powder through the second pipeline.
10. 10. A powder delivery device according to claim 3, characterized in that powder is loaded in a product tank (2), the feed opening of the vacuum feeder (6) extending into the product tank (2) through a pipe; the bottom of the product barrel (2) is provided with a weighing device (20) with a remote transmission function, and the weighing device (20) is electrically connected with the controller (13); The controller (13) is used for controlling the weighing device (20) to start under the condition that a sixth operation signal for acquiring the weight of the powder in the product barrel (2) is received, so as to weigh the weight of the powder in the product barrel (2).
11. 11. A radioactive powder treatment system, comprising: a product barrel (2), wherein radioactive powder is placed in the product barrel (2); The powder conveying device according to any one of claims 1 to 10; a transport member (1) for transporting the product tub (2) to a feed opening of the vacuum feeder (6), and, And the dissolving tank (10) is internally provided with a pump wheel, and the dissolving tank (10) is used for dissolving powder under the stirring of the pump wheel.

Description

Powder conveying device and radioactive powder treatment system Technical Field The invention particularly relates to a powder conveying device and a radioactive powder treatment system. Background The products or materials used in nuclear facilities are typically present in powder form, which is generally radioactive and fine in particles. In the processes of powder generation, conveying, temporary storage, transferring and the like, each link needs to avoid radioactive powder from overflowing into a factory building to form radioactive aerosol, the irradiation dose of contact staff in each link is reduced as much as possible, and the requirements of cleaning and personnel radiation protection in the factory building are met. Therefore, there is a need for a powder delivery means for controlling the radioactive powder within the delivery device during delivery. Disclosure of Invention The invention aims to solve the technical problems of the prior art, and provides a powder conveying device and a radioactive powder treatment system, which are used for effectively controlling radioactive powder in the conveying device in the conveying process and meeting the requirements of factory cleaning and personnel radiation protection. In a first aspect, an embodiment of the present invention provides a powder delivery device comprising a vacuum assembly and a storage assembly. The vacuum assembly comprises a vacuum feeding machine, a vacuum generator and a negative pressure generator. The feed inlet of the vacuum feeder is used for sucking powder. The vacuum generator is arranged in the vacuum feeding machine and is close to the feeding port of the vacuum feeding machine, and is used for manufacturing vacuum at the feeding port of the vacuum feeding machine so as to suck powder. The negative pressure generator is communicated with the vacuum feeding machine and used for maintaining the negative pressure environment of the vacuum assembly. The storage assembly comprises a storage tank, wherein the storage tank is arranged below the vacuum feeding machine and is communicated with the vacuum feeding machine, and the storage tank is used for storing powder entering the vacuum feeding machine and conveying the stored powder outwards. According to the powder conveying device provided by the embodiment of the invention, through the vacuum manufactured by the vacuum generator, the feeding port of the vacuum feeder can suck powder from the product barrel through the pipeline extending into the product barrel, so that the powder conveying is realized. The air inlet of the negative pressure generator is communicated with the inside of the vacuum generator, so that the vacuum component can be kept in a negative pressure state, powder can be limited in the vacuum component, the powder is prevented from leaking into a factory building in the conveying process, and the requirements of factory building cleaning and personnel radiation protection can be met. The storage tank can temporarily store the powder inhaled by the vacuum generator, so that the influence of excessive powder in the vacuum generator on the powder inhalation capacity of the vacuum generator is avoided. In some embodiments, the vacuum generator is a jet vacuum generator, and an air inlet of the jet vacuum generator is communicated with a compressed air pipeline through an outer wall of the vacuum feeder. In some embodiments, the powder delivery device further comprises a control assembly comprising a controller and a first control valve. The first control valve is arranged on the jet type vacuum generator and is electrically connected with the controller. The controller is used for controlling the first control valve to open or close the jet type vacuum generator under the condition that a first operation signal for sucking powder from a feed inlet of the vacuum feeding machine is received. In some embodiments, the outlet of the storage tank is in communication with a dissolution tank. The control assembly further includes a pneumatic valve disposed on the first line between the storage tank and the dissolution tank, the pneumatic valve being electrically connected to the controller. The controller is used for controlling the pneumatic valve to open or close the first pipeline under the condition that a second operation signal for conveying powder through the first pipeline is received. In some embodiments, the storage assembly further comprises a metering tank disposed below the storage tank, the metering tank in communication with the storage tank, and a discharge tube of the metering tank extending into the dissolution tank. The pneumatic valve is arranged on the discharging pipe of the metering tank. In some embodiments, the vacuum assembly further comprises a filter disposed within the vacuum loader for filtering gas flowing to the negative pressure generator. In some embodiments, the vacuum assembly further comprises a blowback gas reservoir disposed on the