Multipurpose pVTt method gas flow standard detection system

[0047] Example 1

[0048] A multi-purpose pVTt gas flow standard detection system provided in this embodiment can be used under two working conditions of positive pressure and negative pressure, sharing a set of pipelines, data acquisition, transmission, processing and control systems, and can be used independently. Or carry out testing work at the same time, and can verify (calibrate) high-precision gas flowmeters (such as 0.2-level gas waist wheel flowmeters, Coriolis mass flowmeters, gas turbine flowmeters, etc.). The device includes a standard container set 100, a clamp meter system 200, a flow regulating system, an air supply system 300, a control system and a piping system 400. Specifically, the above components are connected open-loop or closed-loop through the pipeline system 400 to form pipeline passages, wherein the standard container group 100 adopts the existing overall skid-mounted structure, and the skid-mounted structure refers to the integration of functional comp

[0053] Example 2

[0054] In this embodiment, in order to improve the efficiency of detection and adapt to the detection of different specifications, the difference between this embodiment and the first embodiment is that the specification also includes that the specification of the verification platform is 0.1m respectively. 3 Standard container table, 3m 3 Standard container table and 34m 3 Standard container table position; corresponding to 0.1m respectively 3 , 3m 3 and 34m 3 Standard container, 100 standard container groups of different specifications constitute a standard container group, of which 3m 3 , 34m 3 Standard container adopts water jacket type constant temperature device, 0.1m 3 The standard container adopts a water bath type constant temperature device, and the three can carry out the detection operation at the same time or independently. refer to Figures 8 to 10 in, of which Figure 9 , 10 for Figure 8 The enlarged schematic diagram of the E and F m

[0065] Example 3

[0066] Referring to the above embodiment, the adjustable opening pneumatic valve in the multi-purpose pVTt method gas flow standard detection system of the present invention, which is shown as CV101 or CV102 in the figure, is used for the flow control of the positive pressure pipeline, and the existing pneumatic adjustment The valve takes the compressed gas as the power source, the cylinder as the actuator, and drives the valve with the help of valve positioner, converter, solenoid valve, position retaining valve, gas storage tank, gas filter and other accessories. It can realize switching value or proportional adjustment to adjust various process parameters of pipeline medium: flow, pressure, temperature, liquid level and so on. It should be noted that in this embodiment, the pneumatic piston actuator adopts compressed air as the power source, that is, the air source generated by the air source system 300 is communicated with the pneumatic regulating valve thr