VG-3XMagnetic pump performance comprehensive testing system

1、 Equipment usage environment conditions and application objects:

1. Installation location: Indoor

2. Altitude not exceeding 1000 meters

3. Environmental temperature -25 ℃~+40 ℃

4. Humidity not exceeding 95% (at+25 ℃)

5. Pollution level II

6. Equipment power supply: AC220V, 50HZ (system power supply) AC380V, 50HZ (main circuit power supply)

7. Application object: Single and three-phase water pumps below 20KW.

2、 The water pump test bench has the following parameters and requirements:

This system is a specialized system for water pump performance testing, suitable for various types of testing pumps; The system mainly consists of a main control cabinet, flow sensors, pressure sensors, instruments, etc. It can detect various data such as voltage, current, power, flow rate, speed, pressure, and head of the water pump motor; And it can draw H-Q curve, P-Q curve, η - Q curve, and (NPSH) r-Q curve based on the data collected from the testing project.

This system complies with: international standard ISO9906-2000/national standards GB3216-2005, GB12785-2002, GB6245-2006, GB9064, mechanical industry standards JB8092-96, JB5118-2001, JB8091-98, JB6434-92

3、 Experimental equipment:

The system includes a test bench equipment with a maximum test pressure of 1MPa for an open bench. The main cabinet of each station contains current and voltage display heads for the water pump, intelligent speed and flow testers, pressure and head testers, and three-phase electrical parameter testers.

nOpen platform:

The water circulation system in this station equipment is an open station, with a test power of:

0.55-20KW——40A

The main cabinet can control the entire equipment, with emergency stop buttons for the entire system, start/stop buttons for the main pump, power switching knobs, current switching knobs for each power level, flow switching knobs, pressure switching knobs, and control buttons for different electric valves. Each button also has corresponding indicator lights.

The electric valve control buttons are DN25/50/80/100 electric valve control buttons. This equipment includes a main cabinet, instruments, standard pipelines, and water tank valves.

4、 System schematic diagram:

Figure 1

5、 Instrument Introduction:

1. Intelligent Speed and Flow Measurement Instrument (SFT-A):

Two windows display simultaneous measurement of motor speed and pump flow rate. Window 1 has a speed measurement display function, while Window 2, in conjunction with flow sensors equipped with frequency outputs such as turbines, electromagnetic flow, etc., measures flow frequency differences, liter/second flow rates, ton/hour flow rates, and converted rated speed flow rates.

Instrument measurement accuracy ± 0.1%

2. Intelligent Pressure Head Tester (P-H):

The instrument is equipped with a 4-20mA output pressure transformer, which can measure and display the pressure of both the inlet and outlet channels. The unit can be switched between Mpa, kPa, kgf, and M (meters of water column) for display.

Instrument measurement accuracy ± 0.1%

3. Three phase electrical parameter tester (GDW3001A):

Measurement range: voltage (500V), current (40A), power, power factor, frequency

Function: Three window conversion display, latch, communication, voltage current ratio setting

Instrument measurement accuracy ± 0.5%

1. Pump testing types: submersible pump testing, pump performance testing, pump turbidity testing, submersible pump testing, positive displacement pump testing, well submersible pump testing, positive displacement pump turbidity testing.

2. Testing method:

Measuring unit efficiency using electrical measurement method

Measurement of pump efficiency using the actual measurement method

Calculate efficiency from motor curve

3. Rich parameter setting functions:

1) Product design parameters: including design point flow rate, design point head, design point efficiency, large flow point flow rate, large flow point head, large flow point efficiency, small flow point flow rate, small flow point head, small flow point efficiency, ideal point flow rate, full pressure of positive displacement pump, rated speed, speed transmission ratio, and setting of steam turbidity margin parameters.

2) State parameter settings: including inlet pipe diameter, outlet pipe diameter, inlet gauge difference, outlet gauge difference, atmospheric pressure, room temperature, pump stage, and sampling frequency parameter settings.

3) Test method setting:

Selection of flow sensors: (electromagnetic flowmeter, eddy current flowmeter, orifice plate differential press), range, turbine coefficient, orifice plate coefficient.

Selection of pressure sensors: (positive and negative gauges for differential pressure gauges, differential pressure sensors, outlet pressure sensors, positive and negative gauges for outlet pressure gauges, positive and negative gauges for differential pressure gauges), inlet pressure range, outlet pressure range.

Power testing methods: (electrical measurement method, torque method), (single-phase motor, three-phase motor), current rate, motor curve, sensor calibration temperature.

Speed testing method: (automatic measurement, manual measurement)

4. Humanized testing interface: including key functions such as parameter screen display, stop, sampling, insertion sampling, resampling, deletion, calculation, data display, motor power calculation, and data processing.

5. Data processing interface: Basic information settings include manufacturing unit, report number, test time, pump model, pump number, room temperature, water temperature, atmospheric pressure, gauge difference, inlet pipe diameter, outlet pipe diameter, pressure range, current rate, rated power, rated speed, flowmeter coefficient, etc.

6. Error analysis function of the test bench: including average value, percentage error (%), random error (%), systematic error (%), and total error (%).

7. Enter the "Curve Fitting" function

Curve types: performance curve, turbidity curve, two curves.

Discrimination types: cross line discrimination, non discrimination, etc.

Level: (Level 1, Level 2, Custom, Level B, Level C).

Open the data and import the data to be fitted.

Open the data file and search by product number, product model, and testing date separately.

8. Perform curve fitting on the exported data and draw pump performance curves (H-Q, H-Q, P-Q) or cavitation curves (NASH-Q).

9. Print curve reports, accuracy analysis reports, and print English curves.

10. Draw current curves and compare graphs.