Two-stage corrugated pipe type pressure vessel capable of displaying volume

Abstract

The invention belongs to the field of hydraulic pressure, and relates to a two-stage corrugated pipe type pressure vessel capable of displaying volume. The pressure vessel comprises an outer cylinder (1), a convex seal head (2), a concave end cover (3), a primary corrugated pipe (4), a secondary corrugated pipe (5), a primary convex cover (6), a secondary convex cover (7), a connecting seat (8), a connecting flange (9), an indicating device (10), an oil inlet / outlet (11) and an inflation valve (12). The pressure vessel is suitable for the fields of pressure accumulators, pressurizing oil tanks and the like needing volume compensation and pressure stabilization, has the characteristics of small volume, high volume utilization rate, large expansion and contraction amount, strong volume compensation capability and good oil supply, and is low in manufacturing cost, high in material utilization rate, less in welding seam quantity and good in reliability. Meanwhile, a measuring range of an indicating device is shortened by adopting a primary corrugated pipe and a secondary corrugated pipe, and the overall size is shortened.

Description

technical field [0001] The invention belongs to the field of hydraulic pressure, and relates to a volume-displaying two-stage bellows type pressure vessel. Background technique [0002] Common pressure vessels use a metal piston to separate the liquid chamber and the gas chamber. The piston must be designed with sufficient thickness to set up multiple sets of sealing structures to isolate the gas and liquid. There is a large friction force during the movement of the piston, and the response of filling and discharging oil is slow. The product Increased weight and low volume utilization. In addition, commonly used pressure vessels do not have an indicator structure, which cannot directly display the volume of oil in the pressure vessel, nor can it monitor and control the oil volume signal in real time. Contents of the invention [0003] The object of the present invention is to design a two-stage bellows type pressure vessel capable of displaying the volume, which is suitab...

AI Technical Summary

Problems solved by technology

[0002] Common pressure vessels use a metal piston to separate the liquid chamber and the gas chamber. The piston must be designed with sufficient thickness to set up multiple sets of sealing structures to isolate the gas and liquid. There is a large friction force during the movement of the piston, and the response of filling and discharging oil is slow. The product Increased weight and low volume utilization

In addition, commonly used pressure vessels do not have an indicating structure, which cannot directly display the volume of oil in the pressure vessel, nor can it monitor and control the oil volume signal in real time

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