Low-pulsation series capsule type buffer

Abstract

The invention relates to a low-pulsation series capsule type buffer. The low-pulsation series capsule type buffer can be connected to an outlet pipeline of a hydrostatic test pump when a pressure test is conducted on a loop system. The buffer comprises a shell, a valve body, a capsule and a fungus type valve, wherein one end of the shell is sealed, the valve body is arranged at the other end of the shell, the valve body is communicated with the outline pipeline of the hydrostatic test pump, the capsule is arranged in the shell, a valve rod of the fungus type valve is arranged in the valve body, a valve cap is located in the shell, a partition board is connected to the lower end of the valve rod of the fungus type valve, the interior of the valve body is separated by the partition board in the water flow direction of the outlet pipeline, and a damping hole is formed in the partition board; fluid comes up against the partition board after entering the valve body, a small part of the fluid directly flows out from the damping hole, and the other most part of the fluid rushes to the capsule along a gap between one side of the fungus type valve and the valve body under the blockage of the partition board, then flows back into the valve body along a gap between the other side of the fungus type valve and the valve body after a part of energy is absorbed by the capsule, and finally flows out. Compared with the prior art, the low-pulsation series capsule type buffer has the advantages that the pressure stabilizing effect and the damping effect are good, and the structure is simple.

Description

technical field [0001] The invention relates to a buffer, in particular to a low-pulsation series capsule buffer. Background technique [0002] The buffer has a wide range of uses in the hydraulic system of fluid machinery. It has good pressure response, no noise and air leakage, large capacity, high pressure, wide temperature range, and can play a damping role in the inlet and outlet channels. And the capacity of the airbag to absorb the pressure pulsation with a large capacity, so that the pressure pulsation rate can reach the expected expected value. [0003] The hydraulic test pump is used to provide a pressure source for the loop system during the pressure test. Because there is a high requirement for the pressure pulsation rate of the pressure test medium, the outlet pipeline of the hydraulic test pump must be equipped with high pressure stabilization performance. The outlet buffer, but usually the outlet pressure pulsation rate of the three-piston pump is between 8 a...

AI Technical Summary

Problems solved by technology

The pulsation attenuation of the parallel buffer is more than ±5-8% (according to the test data of Fenghua Hydraulic Parts Factory), so the effect of the parallel buffer to stabilize the voltage and eliminate vibration is not high, so it is not advisable

Images