A system and method for remote online calibration of metering pumps
A metering pump, long-distance technology, applied in the direction of pump testing, liquid displacement machinery, machine/engine, etc., can solve the problems that the calibration liquid cannot be returned, cross-contamination, dose exposure of process operators, etc.
Active Publication Date: 2019-01-08
THE 404 CO LTD CHINA NAT NUCLEAR
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Problems solved by technology
Because no remote calibration equipment was designed at the initial stage of design, when the metering pump needs to be calibrated, the operator must enter the equipment room and perform manual calibration, which will expose the process operator to unnecessary doses of radiation and easily cause problems such as cross-contamination, and this This calibration method prevents the generated calibration liquid from being returned to the storage tank and can only be treated as waste liquid.
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[0022] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.
[0023] like figure 1 As shown, a system for remotely calibrating metering pumps on-line includes a metering pump calibration tank 7, an air blowing measurement device 1, a metering pump 11, and a solenoid valve 5, wherein the air blowing measurement device 1 connects the upper pipe 2 of the air blowing instrument with the The top of the storage tank 4 is connected, and the gas blowing measurement device 1 is connected to the metering pump calibration tank 7 installed on the side of the storage tank 4 through the lower tube 3 of the gas blowing meter, and the lower tube 3 of the gas blowing meter is inserted into the metering pump calibration tank 7 close to the bottom position , where the metering pump calibration tank 7 is a long cylindrical structure with a wall thickness of Φ90 mm and a wall thickness of 6 mm, and the top of the me...
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The invention relates to the technical field of spent fuel aftertreatment, in particular to a system and method for remotely calibrating a metering pump online. A gas blowing measuring device in the system is communicated with the top of a storage tank through a gas blowing instrument upper pipe, the gas blowing measuring device is communicated with a metering pump calibrating tank through a gas blowing instrument lower pipe, the metering pump calibrating tank is arranged on the side face of the storage tank, and the gas blowing instrument lower pipe is inserted to the position, close to the bottom of the metering pump calibrating tank; a storage tank outlet pipe on the lower portion of the storage tank is communicated with a hole in the lower portion of the metering pump calibrating tank through an electromagnetic valve, a hole is formed in the bottom of the metering pump calibrating tank and connected with an inlet pipe of the metering pump, and a metering pump outlet pipe of the metering pump is connected with a mixing clarifying tank. By means of the system and method, on the premise that originally designed technical indexes of storage tank liquid level measurement are kept, remote calibration of the metering pump can be successfully achieved, and the problems that a calibration solution cannot return to the system, operators are radiated in the calibration process and cross contamination is caused are solved.
Description
technical field [0001] The invention belongs to the technical field of spent fuel reprocessing, and in particular relates to a system and method for remote online calibration of metering pumps. Background technique [0002] The organic phase metering pump for the uranium purification cycle of the spent fuel reprocessing production line is placed in the equipment room. The main function of the metering pump is to send the organic phase in the storage tank to the mixing and settling tank according to the designed flow rate. In order to ensure the stable operation of the mixing and settling tank, it is necessary to calibrate the flow rate of the metering pump every 12 hours to determine whether the flow rate of the metering pump is within the set range required by the process. Because no remote calibration equipment was designed at the initial stage of design, when the metering pump needs to be calibrated, the operator must enter the equipment room and perform manual calibratio...
Claims
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IPC IPC(8): F04B51/00
CPCF04B51/00
Inventor 张世超汪南杰陈勤石秀高朱长兵刘琴翟会兵陈建霞杨秀华李静康翠英陈丽凤
Owner THE 404 CO LTD CHINA NAT NUCLEAR