The shield machine air automatic pressure-holding test system is a special equipment designed and developed by our company for the calibration, performance test and evaluation of the shield machine’s air automatic pressure-holding system and key components. Its main functions are as follows:
①Simulate the actual working status of the automatic air pressure holding system of the shield machine, observe the changes of various related parameters, and analyze the law of change.
②Verify the design scheme of the automatic air pressure holding system of the shield machine, and provide data support for the design and development of the system.
③Individual calibration and calibration of each core component.
④ Conduct comparative tests on the core components of the pressure holding system to provide experimental data for system optimization and analysis.
⑤ Carry out the step response of the system (static performance test), and evaluate the static operating characteristics of the system.
⑥ Carry out disturbance test (dynamic performance test) by adding disturbance to the system to evaluate the dynamic performance of the system.
Project | Parameters | Project | Parameters |
Main road path | DN50 | Measurement accuracy of electronic pressure sensor | Level 0.1 |
Main line pressure rating | PN16 | Pressure digital display accuracy | 0.001bar |
Measurement accuracy of pressure gauge | Level 0.25/Level 1.0 | Power supply | 220V AC |
Flowmeter measurement accuracy | Level 0.5 | Programmable controller | S7-200 SMART |
Name | Unit | Attributes |
Warehouse pressure | bar | Detection |
Transmission range | bar | Settings |
Transmitting signal | bar | Detection |
Transmission pressure | bar | Calculation |
Set signal | bar | Detection |
Set pressure | bar | Calculation |
Output signal | bar | Detection |
Intake air flow | nm3/h | Detection |
Exhaust air flow | nm3/h | Detection |
Disturbance flow | nm3/h | Detection |
Disturbance opening | % | Settings |
Actual opening | % | Feedback |
Real-time deviation | bar | Calculation/Analysis |
Settling time | s | Analysis |
pressure peak/valley | bar | Static analysis |
Peak pressure | bar | Dynamic analysis |
pressure valley | bar | Dynamic analysis |