CN2463660Y

CN2463660Y - Pipeline vibration and fluid pressure pulsation attenuator

Info

Publication number: CN2463660Y
Application number: CN 00263449
Authority: CN
Inventors: 王强; 沈荣瀛; 丁炜; 姚本炎; 谢坡岸
Original assignee: Inst No704 General Inst No7 Chinese Co Of Ship Building And Heavy Industrie
Current assignee: Inst No704 General Inst No7 Chinese Co Of Ship Building And Heavy Industrie
Priority date: 2000-12-22
Filing date: 2000-12-22
Publication date: 2001-12-05
Anticipated expiration: 2010-12-22

Abstract

The utility model provides a pipeline vibration and fluid pressure pulse attenuator. The device is provided with two connection tubes, and baffle plates are arranged on the connection tubes. The point of the baffle plate approaching outer margin is provided with a cylindrical elastic body and two connection tubes; two baffle plates and the cylinder elastic body can form a sealing space. The external side of the outer margin of the baffle plate is provided with a rigid shell body. An annular gap for filling elastic bodies is arranged among the baffle plates and the rigid shell body. The annular space formed from the baffle plates, the cylinder elastic body, and the shell body is filled with elastic layers. The pipeline vibration is absorbed by two elastic bodies and is blocked by two elastic bodies in the annular gap. The fluid pressure pulse is absorbed by two elastic bodies to reach the goal that one device has two attenuation functions.

Description

Pipeline vibration and hydrodynamic pressure pulsation dampening

The utility model relates to a kind of with the relevant special measures of fluid performance, particularly a kind of device of subduing pipeline vibration and hydrodynamic pressure pulsation.

In the pipeline of discharge pressure fluid, because pump, dynamic power machine or other members all may pass to pipeline with mechanical vibration, pass to the instrument that is connected with pipeline, equipment more by the road, when vibration is relatively stronger, may cause the irregular operating of associated component, even cause destruction, for this reason, serial connection one elastomer between pipeline of being everlasting is used the influence of eliminating vibration; In the discharge pressure fluid circuit, owing to reasons such as pumpings, hydrodynamic pressure is unbalanced and produce pulsation, cause in the pipeline associated component performance influenced by it and move undesired, even noise and fault appear, in the gas muffling device, utilize the expansion characteristics of gas, can obtain the baffler of better effects, and fluid, because its incompressibility can only be utilized the measure of similar gas baffler, as in pipeline, connecting the accumulator of subduing the hydrodynamic pressure pulsation, promptly between liquid and gas, adopt flexible or rigidity separating device, use the energy of hydrodynamic pressure pulsation in the suction line, but this kind device structure complexity, dimensional weight is also big, and its effect of subduing the hydrodynamic pressure pulsation is also undesirable; Obviously, the simple function of vibration or hydrodynamic pressure pulsation is only subdued in above-mentioned these measures.

The purpose of this utility model is that a kind of pipeline vibration and hydrodynamic pressure pulsation dampening will be provided, and it can be with decay the simultaneously function of pipeline vibration and hydrodynamic pressure pulsation of a device, and simple in structure, in light weight, size is little.

Model utility is achieved in that this dress establishes two adapters respectively, baffled in the adapter, the nearly outer rim of baffle plate place establishes a tubular elastomer, two adapters, two baffle plates and tubular elastomer and forms a seal space, a stiff case is established in the outside of baffle plate outer rim, has an annular gap between baffle plate and stiff case, filling elastomer in the gap, filling elasitic layer in the annulus that baffle plate, tubular elastomer and housing constitute.

The elastomeric setting of the utility model mat tubular, when hydrodynamic pressure pulsation peak action during in this elastomer, the deformation displacement of trace is made in the stressed generation of elastomer to the elasitic layer direction, thereby the trace that forms volume in seal space enlarges, incompressible fluid, with this understanding, its fluctuation pressure peak value descends thereupon, after treating that pressure is returned to calibration value, active force reduces on the elastomer, thereby elastic recovery is utilized the resiliently deformable feature of tubular elastomer and elasitic layer to the original structure state, pipeline fluid pressure pulsation energy is absorbed by elastomer, reach the purpose of dampening fluid pressure pulsation; Simultaneously, the utility model utilizes elastomer in the gap between baffle plate and stiff case, the vibration that one end pipe is connect, must transmit to the other end through housing again by elastomer and elasitic layer from baffle plate, and these elasticity all have the favorable damping feature, thus can completely cut off to a great extent the vibration on pipeline, transmit; Characteristics in sum, the utility model are with a spot of member, and the pipeline vibration of decaying is simultaneously pulsed with hydrodynamic pressure, has overcome the persistent ailment that conventional construction can't be realized.

The concrete structure of model utility is provided by following examples and accompanying drawing thereof.

Fig. 1 is that the utility model pipeline vibration and hydrodynamic pressure attenuator vertical profile are looked schematic representation.

Fig. 2 is that the utility model balance type structure vertical profile is looked schematic representation.

Fig. 3 is that another structure vertical profile of the utility model tubular elastomer is looked schematic representation.

Fig. 4 is that the another structure vertical profile of the utility model tubular elastomer is looked schematic representation.

Fig. 5 be the utility model tubular elastomer again a structure vertical profile look schematic representation.

With reference to Fig. 1, pipeline vibration and hydrodynamic pressure attenuator include two and take over 1,1 ', two baffle plates 2,2 ', one tubular elastomer 3, outer rigid housing 4, elasitic layer 5, wherein:

Two take over 1,1 ', its body 11,11 ' and the body correspondence of the whole delivery line of fluid, and the connection at its two ends can be connected with bolt by flange 12,12 ', also can be by other pipe Placement, two is empty every a segment distance in the middle of taking over 1,1 ';

Two baffle plates 2,2 ' are the disk shape, are located at two respectively and take on 1,1 ' the body 11,11 ', and its means of fixation can be welding, is threaded, and it connects maintenance sealing; Two baffle plates 2,2 ' outer periphery are laid elastomer (21,21 '), and this elastomer can be rubber, plastic cement or other similar materials;

One tubular elastomer 3 can be that straight-tube shape (as Fig. 1), thin-wall corrugated tube (as Fig. 3), two ends are established inward flange 31 (as Fig. 4), two ends are established outward flange 32 shapes such as (as Fig. 5), and tubular elastomer 3 is made by whippy metal-rubber or similar material; Tubular elastomer 3 is sealed at both ends to be connected two baffle plates 2,2 ' nearly outer rim place, it connects mode and can be welding, glueds joint, also can be by screw and pressing plate 22 with its inward flange 31 solid pressures on baffle plate (as Fig. 4), or its outward flange 32 solid pressures are gone up (as Fig. 5) at baffle plate 2,2 ' by screw and pressing plate 22 '.

Above-mentioned two baffle plates 2,2 ', one tubular elastomer 3 and two are taken over 1,1 ' and are formed a seal space 6, when fluid from take over 1 enter after, can be full of sealing space 6, and connect 1 ' output from another pipe, seal space 6 constitutes the part of continuous-flow in the pipeline runner;

One stiff case 4, the main body of fixedly forming a supporting attenuator by center line subdivision two halves place, its internal diameter is slightly larger than baffle plate 2,2 ' external diameter, thus form

baffle plate

2,2 ' and 4 of stiff cases have an annular gap, but in this gap filling elastomer (21,21 '); Stiff case 4 two ends can have inward flange 41 (as Fig. 2), because but inward flange 41 is done any axial deformation displacement through the baffle plate 2,2 ' that a cushion 42 barrier tube connect on 1,1 ', thereby make whole attenuator can be stressed or condition such as be heated still keep the constitutional balance state, pipeline can not produce additional load because of the existence of damping characteristic device;

Posterior limiting 5, can constitute by steel wool, expandable plastic, Elastic plastic-rubber or other similar materials, elasitic layer 5 is filled in the annulus that baffle plate 2,2 ', tubular elastomer 3 and housing 4 constitute, it can accept the distortion from tubular elastomer 3, help absorbing energy, and can keep tubular elastomer 3 function of bringing into normal play from fluid pressure pulses.

During conveyance fluid, it is elastomer 21,21 ' isolated in two

elastomers

3,5 and two gaps through baffle plate 2,2 ' that the vibration of pipeline connects 1,1 ' from pipe, forms the good attenuation function of pipeline vibration; Fluid pressure pulses in the pipeline acts on tubular elastomer 3 in seal space 6, its energy then is that tubular elastomer 3 and elasitic layer 5 absorb; Thereby make attenuator possess the function of subduing pipeline vibration and fluid pressure pulses simultaneously.

Claims

1, a kind of pipeline vibration and hydrodynamic pressure pulsation dampening comprise pipeline, it is characterized in that:

A. device is established two respectively and is taken over (1,1 '), takes over (1,1 ') and goes up baffled (2,2 ');

B. the nearly outer rim place of baffle plate (2,2 ') establishes a tubular elastomer (3), and two take over (1,1 '), two baffle plates (2,2 ') and tubular elastomer (3) forms a seal space (6);

C. a stiff case (4) is established in the outside of baffle plate (2,2 ') outer rim, has an annular gap between baffle plate (2,2 ') and stiff case (4), filling elastomer (21,21 ') in the gap.

D. filling elasitic layer (5) in the annulus that constitutes of baffle plate (2,2 '), tubular elastomer (3) and housing (4).

2, attenuator according to claim 1 is characterized in that tubular elastomer (3) can be straight tube or thin-wall corrugated tube.

3, attenuator according to claim 1 and 2 is characterized in that tubular elastomer (3) can be metal matter or rubber is made.

4, attenuator according to claim 1 is characterized in that housing (4) by two semifixed compositions of midline subdivision, and its two ends can be provided with inward flange (41).

5, attenuator according to claim 1 is characterized in that tubular elastomer (3) two ends establish inward flange (31), and with screw and pressing plate (22) with inward flange (31) solid pressure on baffle plate (2,2 ').

6, attenuator according to claim 1 is characterized in that tubular elastomer (3) two ends establish outward flange (32), with screw and pressing plate (22 ') with outward flange (32) with being pressed on the baffle plate (2,2 ').

7, attenuator according to claim 1 is characterized in that elasitic layer (5) can be steel wool, expandable plastic or Elastic plastic-rubber.

8, attenuator according to claim 1 is characterized in that elastomer (21,21 ') can be rubber or Elastic plastic-rubber.