82. How does the test pipeline in the hydraulic oil system enable the standby pump to start automatically without shutting down the system?

2021-11-30View Original

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82. How does the test pipeline in the hydraulic oil system enable the standby pump to start automatically without shutting down the system?

Reply #22021-11-30

The test pipeline consists of a orifice plate and a needle valve; the pressure measurement point is located between the orifice plate and the needle valve. When the needle valve opens, the pressure at the measurement point drops, which triggers the pressure relay. Due to the flow-limiting effect of the orifice plate, the pressure in the main oil circuit does not decrease, thereby enabling the standby pump to start automatically without shutting down the system

Reply #32021-12-01

The test pipeline consists of a orifice plate and a needle valve; the pressure measurement point is located between the orifice plate and the needle valve. When the needle valve opens, the pressure at the measurement point drops, which triggers the pressure relay. Due to the flow-limiting effect of the orifice plate, the pressure in the main oil circuit does not decrease, thereby enabling the standby pump to start automatically without shutting down the system

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