A kind of interlayer cavity type hydraulic bag and accumulator with the bag

Abstract

The invention discloses a sandwich cavity type hydraulic bladder and an accumulator with the bladder, comprising a bladder body, a bladder tube, a sandwich cavity, a central cavity, and a sealer. The rubber hose, the interlayer cavity is a columnar cavity with a ring-shaped cross section surrounded by the interlayer between the inner capsule tube and the outer capsule tube; the central cavity is the cavity surrounded by the inner capsule tube, located in the center of the capsule body and sandwiched Surrounded by the lumen, the sealing device locks the opening at the end of the sealing bladder tube. The sandwich cavity hydraulic bladder can generate radially inward compressive force on the object placed in its central cavity, which is evenly distributed on the annular surface at 360°. The accumulator using this hydraulic bladder can significantly reduce the pressure of the shell and other pressure parts. The pressure burden, improve its reliability and durability. The flexible body accumulator with interlayer cavity hydraulic bladder as the main body can be used as a flexible tension spring to replace metal tension springs and elastic ropes in mechanical devices. Its tension and length expansion range can be adjusted online through hydraulic pressure and air pressure.

Description

technical field [0001] The invention relates to a hydraulic bladder and an accumulator with the bladder, in particular to a sandwich-cavity hydraulic bladder and the accumulator with the bladder, belonging to the technical field of fluid pressure energy applications. Background technique [0002] The hydraulic bladder is a hydraulic device with a flexible cavity structure. The bladder wall surrounding the cavity is usually made of elastic rubber material composite fiber reinforced layer, so that the bladder has a large amount of expansion and contraction deformation, and at the same time can withstand The internal and external pressure difference generated by the internal fluid, usually the volume ratio is more than twice, and the minimum burst pressure is not less than 10MPa. It is different from the hydraulic hose used to convey the medium and transmit the pressure. The hydraulic bladder is mainly used as an actuator in the hydraulic system, and the conversion of pressure ...

AI Technical Summary

Problems solved by technology

[0007] There are at least two problems in the above two types of hydraulic bladders: one is that it can only generate expansion force or pulling force externally, and a single hydraulic bladder cannot directly generate compressive force on external objects, which is determined by its single-chamber structure; When the fluid pressure in the capsule is very high, the huge tension generated by the radial expansion of the end of the capsule tube will expand the edge of the metal sleeve that locks the capsule opening, causing it to undergo trumpet-shaped plastic deformation

"It is well known to those skilled in the art that in conventional bladder accumulators, the liquid is stored in the space outside the air chamber capsule in the shell, and the pressure of the liquid acts directly on the shell and other pressurized devices. When the pressure fluctuation with high peak value often occurs in the hydraulic circuit, it will accelerate the fatigue of the pressurized components, reduce their life and even directly fail

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