Author(s)

Qiaodan Luo, Bojian Li

Corresponding Author

Qiaodan Luo

ABSTRACT

This paper studies the pressure control problem of high-pressure oil pipes, and establishes a one-way valve control model based on the difference equation. First, the function relationship between elastic modulus and pressure in the data is obtained by fitting. The relationship between the pressure and the flow rate into the high-pressure oil pipe, and the time at which the check valve opens in a cycle (100ms) is set to t, the time at which the injector is opened is the initial time, and the time interval is 0.01ms. A differential equation model was established, with the minimum fluctuation of the pressure in the high-pressure tubing as the objective function, and solved using a cyclic traversal algorithm. When the pressure in the tubing was stabilized at about 100 MPa, the check valve opened at 1.77 ms and closed at 4.47 ms.

KEYWORDS

Difference equation; check valve control; high pressure tubing