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一、概述各种液压系统的元件和管道在研制和生产过程中都要作强度和气密性试验,有的还要作爆破和残余变形试验。这些试验对压力源有一定的要求,即压力上升要缓慢、均匀、易于控制。多年的实践试验证明,对于小容腔来说,手摇压力泵是最合适的压力源。一般的手摇压力泵在结构上存在一个很大的缺点,即手摇的力矩不能充分利用,被试件的压力腔在充液和开始上压时,须要大的流量和小的压力,随着压力上升,流量要
First, an overview of various components of the hydraulic system and piping in the development and production process for strength and tightness test, and some also for blasting and residual deformation test. These tests on the pressure source have certain requirements, that is, the pressure rise to be slow, uniform, easy to control. Years of practical tests have shown that hand pressure pumps are the most suitable pressure source for smaller chambers. The general manual pressure pump in the structure there is a big drawback, that is, hand torque can not make full use of the pressure chamber was the specimen in the filling and start the pressure, the need for large flow and pressure, with With pressure, traffic to