In the electromechanical equipment of special equipment, the hydraulic system is a very important system.
In elevators, there are various hydraulic components in hydraulic elevators. In hoisting machinery, hydraulic systems are often found in hydraulic brakes, hydraulic outriggers of mobile cranes, and various hydraulic arms.
In the hydraulic system, there are a variety of valves that are responsible for various system protection functions, such as common relief valves, balance valves, rupture valves, check valves, reversing valves, and so on.
Today, I will briefly introduce the relief valve.
1. What is a relief valve? gb/t 7588.Terms and Definitions in 2020-6 (p. 6).
A valve that restricts the pressure of the system from not exceeding a set value by means of overflowing fluid.
Main uses: 1) Voltage regulation and regulation 2) Voltage limiting.
Second, the schematic diagram
3. Explain the principle of the relief valve
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Fourth, the past examination questions(2023 Anhui closed-book question) is shown in the figure below, and the symbol represents ( ).
a.Check valve bShut-off valve cRelief valve dRupture valve answer: c (2023 Guangxi test paper) The one that belongs to the relief valve in the serial number in the following figure is ( ).
a.2 b.4 c.3 d.6 Answer: D Disclaimer: **Internet, compiled and published by the special inspection soldiers. The text of this article,**The copyright belongs to the original author,Thank you for the hard work of the original author,If it involves copyright issues,Please contact me to delete it as soon as possible! -end-