CN202883510U

CN202883510U - Spherical diaphragm accumulator

Info

Publication number: CN202883510U
Application number: CN 201220593605
Authority: CN
Inventors: 王凯; 王可
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-11-07
Filing date: 2012-11-07
Publication date: 2013-04-17
Anticipated expiration: 2022-11-07

Abstract

The utility model discloses a spherical diaphragm accumulator. Compared with the prior art, the spherical diaphragm accumulator overcomes the defects that rubber capsules are low in pressure resistance and easy to age and be damaged. The spherical diaphragm accumulator comprises a spherical shell (4), a gas-charging connector (1) positioned at the upper end of the spherical diaphragm accumulator and a hydraulic connector (6) positioned at the lower end of the spherical diaphragm accumulator. A resilient diaphragm (5) is arranged in the inner chamber of the spherical shell (4). The end of the hydraulic connector (6) is provided with outside threads (7). The bottom edge of the hydraulic connector (6) is integrated with the bottom end of the spherical shell (4) through welding materials (9). A step (3) staggered on the inner wall and the outer wall of the spherical shell is positioned in the longitudinal middle of the spherical shell (4). The resilient diaphragm (5) is fixed on the step (3) of the inner wall of the spherical shell (4) through a ring-shaped steel liner (2) and a stop block (8) is arranged insertedly at the centre of the resilient diaphragm (5). Compared with the prior art, the spherical diaphragm accumulator has the advantages that a higher pressure resistance is achieved, fatigue cracks are not easy to appear during use and the service life of the spherical diaphragm accumulator can be prolonged effectively.

Description

A kind of spherical diaphragm accumulator

Technical field

The utility model relates to a kind of being connected in the hydraulic system, mainly plays the diaphragm accumulator product manufacturing technology of auxiliary energy-storage, noise reduction and pooling feature, especially refers to housing and the elastic diaphragm assembly structure technology of accumulator.

Background technique

Accumulator is a kind of at the inner auxiliary device that plays accumulation of energy, noise reduction and pooling feature of hydraulic system, and product category is various, mainly comprises diaphragm type, piston type and spring etc.According to physics principle, be incompressible in the fluid reality, so can not the pressure store energy.Hydro pneumatic accumulator is to utilize the compressibility of gas to store fluid.Diaphragm accumulator is based on this principle, adopts nitrogen as compressible medium.Diaphragm accumulator is grouped into by the gentle body of liquid part, and barrier film is as the gas seal separator.Liquid part communicates with oil hydraulic circuit, thus pressure when raising gas compressed, fluid is inhaled into diaphragm accumulator.During pressure drop, gas expansion, thereby fluid ramming system loop.Generally speaking, spheroid is made with the accumulator housing as much as possible in order to save alloyed steel housing raw material by manufacturing firm, so that under the identical prerequisite of finished product thickness, is equal to the made vome of shell maximum of steel of consumption.This type of comparatively typical product such as State Intellectual Property Office are called the utility model patent technology of " spherical accumulator of jointless quality " in the name of notice of authorization on December 5th, 2007, it comprises " spherical shell and rubber capsule, described spherical shell two ends connect respectively inflatable interface and liquid in-out interface ... describedly connect the T-shaped nut that borehole jack connects the tool central through bore; Described T-shaped nut afterbody is stuck in the spherical shell inwall, and it stretches out in the described neck that connects the hole and establishes gland nut.Liquid in-out interface one end of described spherical shell also can be made cylindrical neck portion through the spheroid reducing; The cylindrical neck portion internal surface is provided with the internal thread that is connected with hydraulic circuit for the liquid in-out interface ".Because what this product arranged in spherical shell is rubber capsule, rubber capsule is filled in whole inner walls after the inflation; After being applied to hydraulic system, be subjected to significantly to shrink again behind the hydraulic impulse, therefore rubber capsule frequently is in and significantly expands and shrinks in the environment, there is withstand voltage low, deficiency that the life-span is short in easily aging breakage.

The model utility content

The technical problems to be solved in the utility model is to be filled in whole inner walls after overcoming the rubber capsule inflation that has the like product existence now, frequently be in during work and significantly expand and contraction state, thereby there are easily aging damaged, withstand voltage low and defective and deficiency that the life-span is short, provide a kind of spherical diaphragm accumulator product to society, to improve the withstand voltage properties of product, increase the service life.

The technological scheme that its technical problem that solves the utility model adopts is: spherical diaphragm accumulator, and comprise spherical shell and be located at respectively up and down inflatable interface and the hydraulic interface at two ends, described spherical shell inner chamber is provided with elastic diaphragm; Described hydraulic interface port is established outside thread, and one is made by wlding and described spherical shell lower end in described hydraulic interface base; Be provided with the step of housing inside and outside wall dislocation at the longitudinal middle part of described spherical shell; Described elastic diaphragm is fixed in the described step of described spherical shell inwall by annular steel lining; The center of described elastic diaphragm is embedded with limiting stopper.

The spherical diaphragm accumulator product of the utility model is in gas replenishment process, along with nitrogen pressure rises, the elastic diaphragm shape maintains is constant, because the air pressure of part is directly born by the spherical shell inwall more than annular steel lining, therefore with respect to all-in-one-piece rubber capsule infrastructure product, the pressure resistance of this product is higher; After being subjected to hydraulic impulse, limiting stopper follows closely on the elastic diaphragm and moves, and the elastic deformation amount is much smaller with respect to all-in-one-piece rubber capsule, in use is difficult for producing fatigue crack, can effectively prolong the working life of accumulator.

Description of drawings

Fig. 1 is the utility model product structure schematic diagram.

Embodiment

As shown in Figure 1, the spherical diaphragm accumulator of the utility model comprises spherical shell 4 and is located at respectively up and down inflatable interface 1 and the hydraulic interface 6 at two ends that described spherical shell 4 inner chambers are provided with elastic diaphragm 5; At described spherical shell 4 inner chambers, form air chamber 10 between described inflatable interface 1 and the described elastic diaphragm 5, form liquid chamber 11 between described elastic diaphragm 5 and the described hydraulic interface 6; Described hydraulic interface 6 ports are established outside thread 7, and one is made by wlding 9 and described spherical shell 4 lower ends in the base; Through rolling finishing, form the step 3 of housing inside and outside wall dislocation at the longitudinal middle part of described spherical shell 4; Described elastic diaphragm 5 is fixed in the described step 3 of described spherical shell 4 inwalls by an annular steel lining 2; The center of described elastic diaphragm 5 is embedded with limiting stopper 8.

The below continues by reference to the accompanying drawings, the working principle of summary the utility model product.As shown in Figure 1, high pressure nitrogen is filled with the air chamber 10 of spherical shell 4 inner chambers by inflatable interface 1, and the backward lower expansion of elastic diaphragm 5 compressive deformations is until limiting stopper 8 is hampered by hydraulic interface 6 bottom surfaces; In this process, along with nitrogen pressure rises, elastic diaphragm 5 shape maintains are constant, owing to directly born by spherical shell 4 inwalls at the air pressure of annular steel lining part more than 2, therefore with respect to all-in-one-piece rubber capsule infrastructure product, the pressure resistance of this product is higher; After being subjected to hydraulic impulse, limiting stopper 8 follows closely on the elastic diaphragm 5 and moves, and the elastic deformation amount is much smaller with respect to all-in-one-piece rubber capsule, in use is difficult for producing fatigue crack, can effectively prolong the working life of accumulator.

Claims

1. a spherical diaphragm accumulator comprises spherical shell (4) and is located at respectively up and down inflatable interface (1) and the hydraulic interface (6) at two ends, and described spherical shell (4) inner chamber is provided with elastic diaphragm (5); Described hydraulic interface (6) port is established outside thread (7), and one is made by wlding (9) and described spherical shell (4) lower end in described hydraulic interface (6) base; It is characterized in that: the step (3) that is provided with the dislocation of housing inside and outside wall at the longitudinal middle part of described spherical shell (4); Described elastic diaphragm (5) is fixed in the described step (3) of described spherical shell (4) inwall by annular steel lining (2).

2. spherical diaphragm accumulator as claimed in claim 1, it is characterized in that: the center of described elastic diaphragm (5) is embedded with limiting stopper (8).