dyLT-LJ Liquid Flow Meter Calibration Training Platform
Release time：2024-06-10 10:00viewed：times
1. Project Overview
Flow is an important parameter in production and scientific experiments. Whether it is industrial production or scientific experiments, flow measurement is required to calculate the production capacity of the process or equipment and the proportion of the flow of each part, so as to analyze the process or Equipment evaluation. At present, instruments for measuring flow can be roughly divided into three categories, namely velocity method, volume method and mass flow method.
Although various flow meters are flow calibrated and have a flow scale established before leaving the factory, when used in laboratories or production, operating conditions such as working medium, pressure, temperature, etc. are often different from the conditions during original calibration. In order to use the flow meter accurately, on-site calibration work is required before use.
This test bench m*nly uses the weighing method to calibrate and verify orifice flowmeters, electromagnetic flowmeters, turbine flowmeters, and vortex flowmeters. Use a high-precision collector to collect data and transmit it to the computer through the serial port; use C#2005 and SQL to build a software platform to complete real-time data reading, data calculation and data storage, historical data query and real-time curve drawing, and realize flow meter calibration. .
2. Technical parameters
Flow range: 1~10m3/h
Pressure: 1.6MPa
Medium: water
Instrument measurement accuracy: 0.5 level
Power supply: 440V 16A
output signal: 4~20mA
3. System composition
The experimental system consists of a waterway system, an electronic weighing unit, It is composed of data acquisition system, computer measurement control system and calibrated flow meter.
4. Working principle
(1) Open the m*n valve 2, turn on the circulating water pump 1, and adjust the height of the overflow valve 3 so that the high water tank 4 is at a cert*n level. water level, adjust proportional valve 7 to ensure stable flow in the waterway system.
(2) Open the water inlet valve 16 and the water outlet valve 15 of the weighing cylinder 18, and confirm that water flows out of the water outlet valve;
(3) Open the dr*n valve 14, and close the water inlet valve 16 of the weighing cylinder at the same time, so that the water in the water tank is dr*ned. Close the water outlet valve 15. At this time, a closed-loop circulation system is formed except for the weighing cylinder;
(4) Close the dr*n valves 14 and 15, and open the water tank inlet valve 16 at the same time. At this time, the system forms a loop;
(5) On the computer Operation, start testing, specific software operations are described in the software part;
(6) After the experiment is over, first turn off the water pump and dr*n out the liquid in the weighing cylinder;
(7) Adjust the height of the overflow valve 3 and the regulating valve 7 to adjust the loop flow , repeat the above operations.
The temperature, pressure, flow, weight and other state parameters of the experimental system are obt*ned by corresponding sensors or measuring instruments. The processing of experimental data is calculated and displayed by special software on the host computer, which can display real-time data and real-time curves.
5. The virtual simulation software for electrical installation of building buildings and smart buildings is based on unity3d design. Users can choose different interactive interface sizes according to computer configuration. Choose six image quality levels. The model in the software can be rotated 360°, enlarged, reduced, and translated. There are assistant prompts during the use of the software, and the content is as follows: A. Wet alarm system 1. System overview: Overview of wet alarm system 2. Equipment awareness: equipped with the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), and exercises (Built-in 6 multiple-choice questions, prompts for correct and incorrect choices), schematic diagram (can be entered into the device from the schematic diagram). Equipment includes: nozzle, water flow indicator, signal butterfly valve, exhaust valve, fire alarm control, high pipe pressure gauge, high water tank, Wia control cabinet, pressure stabilizing tank, flow switch, terminal water testing device, dr*nage facilities, water pump connection alarms, hydraulic alarms, delayers, wet alarms, butterfly valves, check valves, fire pumps, safety pressure regulators, and fire pools. 3. Principle display: Show the working principle of the wet alarm system, three-dimensional animation demonstration, the three-dimensional model is translucent, and the internal water flow can be seen. Equipped with a practice module (built-in 4 multiple-choice questions, with prompts for correct and incorrect choices) 4. Design layout: There are multiple-choice questions and calculation questions, each question is scored, and the correct answer and score will be displayed after submission B. Gas fire extinguishing system 1. System overview: Overview of gas fire extinguishing system 2. Equipment awareness: equipped with the best viewing angle, equipment det*ls (displaying the introduction or parameters of the equipment), exercises (built-in 8 multiple-choice questions, with prompts for correct and incorrect choices), Schematic diagram (access to the device from the schematic diagram). Equipment includes: nozzle, HFC-227 storage bottle, bottle head valve, heptafluoropropane one-way valve, high-pressure hose, gas one-way valve, safety valve, weighing alarm, electromagnetic starter, selection valve, smoke alarm, fire Alarm controller. 3. Principle display: Show the working principle of the gas fire extinguishing system, three-dimensional animation demonstration, the three-dimensional model is translucent, and the internal gas can be seen. Equipped with a practice module (built-in 3 multiple-choice questions, with prompts for both correct and incorrect choices) 4. Design and layout: There are 6 multiple-choice questions, each question is scored, and the correct answer and score will be displayed after submission. C. Escape drill: adopted Teaching is conducted in the form of fun games. Escape from the burning room within a limited time. If you make a wrong choice, you will directly enter the score interface.
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