Portable gas ultrasonic flow meter calibrating device
A technology of ultrasonic flowmeter and verification device, which is applied to measurement device, liquid/fluid solid measurement, testing/calibration device, etc., can solve the problems of short verification period and safety hazard of verification method, and achieves prolonging the real-flow verification period and avoiding The effect of measuring disputes and resolving frequent disassembly and inspection of gas ultrasonic flowmeters
Inactive Publication Date: 2017-05-31
PETROCHINA CO LTD +2
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to overcome the problem in the background technology that the existing verification method has a short verification period and needs frequent disassembly and assembly to bring great safety hazards, and to provide a portable gas ultrasonic flowmeter verification device, the portable gas ultrasonic flow meter The meter verification device can judge the measurement performance of the gas ultrasonic flowmeter in the running state, and can realize the inspection of the ultrasonic flowmeter by the sound velocity method at a lower cost, which is convenient and safe
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[0010] The present invention will be further described below in conjunction with accompanying drawing:
[0011] attached figure 1 As shown, the portable gas ultrasonic flowmeter verification device includes an explosion-proof box 1, a DC power supply 2 and a flow computer 3 are housed in the explosion-proof box 1; the DC power supply 2 is connected to a charger 4 and a power switch 5 respectively; the flow rate The computer 3 is respectively connected to the temperature transmitter 6 and the pressure transmitter 7 through joints, the flow computer 3 is connected to the notebook computer 8 through a network cable, and connected to the ultrasonic flowmeter 9 through the RS485 joint; the flow computer 3 is connected to the power switch 5 through a wire, so The connecting wire of the flow computer 3 is connected with a power surge protector 10; the above-mentioned explosion-proof box 1 is a portable explosion-proof box 1.
[0012] The hardware system of the verification device is...
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The invention relates to a portable gas ultrasonic flow meter calibrating device, and mainly aims to solve the problem of high potential safety hazards caused by frequent disassembly and assembly due to short calibrating period of an existing calibrating method. The portable gas ultrasonic flow meter calibrating device is characterized in that a direct-current power supply (2) and a flow computer (3) are mounted in an explosion-proof box (1), the direct-current power supply (2) is respectively connected with a charger (4) and a power supply switch (5), and the flow computer (3) is respectively connected with a temperature transmitter (6) and a pressure transmitter (7) through connectors, connected with a portable computer (8) through a network cable, connected with an ultrasonic flow meter (9) through a connector and connected with the power supply switch (5) through a wire. The portable gas ultrasonic flow meter calibrating device can judge metering performance of the gas ultrasonic flow meter under the running state, verification of sound velocity method of the ultrasonic flow meter can be achieved by the aid of low cost, and the calibrating device is convenient and safe.
Description
technical field [0001] The invention relates to a verification device in the measurement field of ground facilities and gathering and transportation pipelines in the natural gas development process, in particular to a portable gas ultrasonic flowmeter verification device used in a natural gas metering station. Background technique [0002] At present, the verification method of gas ultrasonic flowmeter mainly adopts real flow verification, and the verification period generally does not exceed 2 years. The verification period is short, the cost is high, and frequent disassembly and installation and long-distance transportation will cause certain safety hazards. In particular, individual stations do not have backup flowmeters, and long-term queues for actual flow verification will seriously affect production and operation. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the problem in the background technology th...
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IPC IPC(8): G01F25/00
CPCG01F25/15
Inventor 肖迪房福生孙宝权赵成海
Owner PETROCHINA CO LTD