Abstract:According to the fact that the pipeline pressure could not be accurately measured because of the pressure fluctuation in the fluid transmission pipelines in a certain type of fluid machinery parts test, regarded as pressure buffer device, a certain type of inflation peltry type oil pressure reservoir was fixed to the testing equipment. The optimum pneumatic pressure for leading to the minimum pressure fluctuation in the testing pipelines was obtained by experiment. Then the pressure fluctuation in the fluid transmission pipelines was eliminated, and the detection precision of pressure during product test was increased.