CN206190473U - Gas attenuating device - Google Patents

Abstract

The utility model discloses a gas attenuating device, mainly by horizontal tank, the import pipe, the outlet pipe, the rectification orifice plate becomes with the energy buffering nest of tubes, horizontal tank's both ends are located respectively to import pipe and outlet pipe, the middle part of horizontal tank inner chamber is located to the rectification orifice plate, horizontal tank inner chamber between import pipe and the rectification orifice plate forms the front buffer chamber, horizontal tank inner chamber between rectification orifice plate and the outlet pipe forms rearmounted cushion chamber, two energy buffering pipe is located on the horizontal tank outer wall that the front buffer chamber corresponds symmetrically and is linked together with the front buffer chamber. The utility model discloses the impact air flow of the full frequency channel that can decay, the installation condition easily satisfies, inside no big resistance member, it is little to overflow the pressure drop, and application range is wider, and application effect is good.

Description

Gas attenuating device

Technical field

The utility model belongs to reciprocating compressor outlet pipeline cushion technique field, and in particular to a kind of gas declines Subtract device.

Background technology

Gas that the intermittence of reciprocating compressor working cycles is caused and thus caused compressor upstream and downstream Equipment pipe vibration easily causes the serious accidents such as device damage, the fatigue rupture of pipe fitting, the decline of compressor life-span, on reciprocal The correlative study of formula compressor outlet gas decay is significant.

The decay gas of early stage is mainly by setting surge tank to realize, is developed on the basis of surge tank Attenuating more preferable gas attenuator, gas attenuator is substantially internal to be provided with filter element Surge tank, on the one hand, air-flow different in flow rate makes high flow rate by the shunting action of filter element from for gas flowing angle Gas is unbalanced so as to balance gas flow rates by expansion buffer effect；On the other hand from for filtering angle, in the duct Do not only have low frequency wave in the pressure harmonic wave propagated, also there are high frequency waves, the circular hole on tube wall has suppression to low frequency pressure waves Effect, cushion space is inhibited to high frequency pressure waves, the pressure harmonic wave propagated in complete twin conduit by both combinations Inhibitory action.Orifice plate on pipeline to the conversion of traveling wave by carrying out to pressure fluctuation standing wave.Chinese patent air-flow arteries and veins Dynamic vibration suppressor (201010546888.0) discloses a kind of air-flow arteries and veins for reciprocating compressor outlet in pipeline Dynamic vibration suppressor；A kind of I-type impact air flow attenuator of Chinese patent (201310390226.0) discloses a kind of I types impact gas Stream attenuator, including air-flow buffer chamber, air inlet pipe and escaping pipe etc..

Existing gas attenuator structure is excessively dull, and the means of air pulse of decaying are more single, to impact air-flow Decayed simultaneously, caused the excessive pressure drop of pipe-line system, caused unnecessary pressure energy loss.

Utility model content

For the means for solving the attenuator decay air pulse of prior art presence are single, system pressure drop is excessive etc. technology Problem, the utility model provides a kind of gas attenuating device.

The gas attenuating device that the utility model is provided is main by horizontal tank body, inlet tube, outlet, rectification orifice plate With two energy snubber pipes composition, inlet tube and outlet are respectively arranged on the two ends of horizontal tank body, inlet tube axis, outlet axle Line and horizontal tank body axis three overlap and are located along the same line, and rectification orifice plate enters located at the middle part of horizontal tank inner chamber Horizontal tank inner chamber between mouth pipe and rectification orifice plate forms front buffer chamber, the horizontal tank body between rectification orifice plate and outlet Inner chamber forms back buffer chamber, two energy snubber pipes symmetrically on the corresponding horizontal tank wall in front buffer chamber and with Front buffer chamber is connected, and two axis of energy snubber pipe overlap and vertical with horizontal tank body axis.

The inlet tube is divided into front and rear two sections, and leading portion is equal pipe, positioned at horizontal tank external body, is equipped with isometrical inside pipe wall Inlet throttle orifice plate；Back segment is expansion tube, positioned at horizontal tank interior, uniformly air admission hole is provided with expanding tube wall.Inlet tube The inlet throttle orifice plate of leading portion enters conversion of the moving standing wave to traveling wave to gas pressure, by the pressure fluctuation amplitude drop in pipeline To small value, weaken the intensity of gas, the area of passage of inlet throttle orifice plate is determined by correlation computations；Inlet tube back segment mistake Expansion tube mainly acts on steadily flowing using expanding, it is to avoid to flow the excess impact of the gas in increase team's front buffer chamber, expand Air admission hole on the pipe of footpath as passage from high velocity fluid flow to preposition cushion chamber while decay low frequency harmonic wave, on expansion tube Air admission hole be evenly distributed circular hole.

The outlet is a straight tube, is divided into front and rear two sections, and leading portion is located at horizontal tank interior, is uniformly opened on leading portion tube wall There is steam vent, steam vent is circular hole；Back segment is located at horizontal tank external body, and back segment inside pipe wall is provided with outlet throttling orifice plate.Outlet Steam vent in the outlet-pipe inlet and tube wall of pipe leading portion enters the passage of outlet for back buffer chamber interior air-flow, and outlet enters Mouthful " short circuit " stream with back buffer chamber fraction enter the passage of outlet, through the outlet throttling of outlet back segment setting The effect of orifice plate, realizes cutting down the purpose of turbulent intensity by standing wave to the conversion of traveling wave for the last time.

The centre of the rectification orifice plate is provided with short circuit hole, and remaining position is uniformly provided with rectification hole, and rectification hole is circular hole. The aperture of short circuit hole is not less than the bore of inlet tube leading portion, and short circuit hole is mainly used as short-circuit flow (i.e. from after inlet tube entrance The relatively low fluid of the air-flow flowed immediately rearward without air admission hole, generally flow velocity) and by the portion of front buffer chamber buffering Gas is divided to enter the passage in back buffer chamber.Rectification orifice plate typically sets 2~3, and plate spacing is unsuitable excessive.

The energy snubber pipe is main by tubular barrel of the one end with pipe end flange, blind flange, spring pedestal, double helix bullet Spring and constituted by platen, spring pedestal is welded in side of the blind flange towards pipe end flange, spring pedestal and welded respectively by platen It is connected to the two ends of spring and the axis with spring is vertical, spring is with the pipe end flange phase of the blind flange of its one end and tubular barrel Flange connection is cooperatively formed, spring is welded with and is stretched into inside tubular barrel by the other end of platen, stretched with spring by platen Moved along tubular barrel axis；Tubular barrel is mutually welded with its one end away from pipe end flange with the outer wall of horizontal tank body.It is pressurized Disk is in the form of annular discs, and certain gap is left so that ensure will not in energy separator tube by between platen diameter and pipe dress cylinder inboard wall There is the risk of build-up of pressure；Should be met by platen thickness and receive to ensure enough rigidity without hair when gas pulses power is impacted Change shape；Double-helix spring is the energy storage component of core, positioned at spring pedestal and by between platen, the spiral coil of double-helix spring Number answers coordinate design with pitch has enough buffer distances, the rigidity of double-helix spring to meet double-helix spring in deformation Value should calculate determination so that spring has enough buffer capacities according to compressor capacity size, should not be excessive.

General principle of the present utility model is from staying first by inlet tube inlet throttle orifice plate by the pressure fluctuation of air-flow Ripple is converted to traveling wave, eliminates the resonance condition of gas, and the gas amplitude that will be propagated in pipeline reduces to small value；Then gas Stream gently enters gas attenuating device by the expansion tube (above having air admission hole) of inlet tube, and part high velocity air is from air admission hole Overflowing into front buffer chamber in advance carries out expansion buffer, and flow velocity is reduced and as pressure gas higher, remaining mesolow gas Body portion enters front buffer chamber through expansion tube outlet, and another part flows to back buffer chamber due to the effect of " short circuit " stream；It is preposition Cushion chamber installs energy snubber pipe, is declined for storing periodicity that energy, periods of low pressure release energy repeatedly in high pressure phase Subtract gas；High pressure draught in front buffer chamber after the current stabilization effect of rectification orifice plate by entering back buffer chamber；By The further cushioning effect in back buffer chamber, the air-flow in back buffer chamber is by outlet-pipe inlet and steam vent through outlet On outlet throttling orifice plate decay again after flow out pulsation damping device.

The utility model combines various pulsation decay such as perforate inlet/outlet pipe, restricting orifice, spring energy-storage, rectification orifice plate Means, the impact air-flow of the full frequency band that can decay；Mounting condition is content with very little, and without big resistance element, excessively stream pressure drop is small, makes for inside Wider with scope, application effect is good.

Brief description of the drawings

Fig. 1 is the structural representation of the utility model gas attenuating device；

Fig. 2 is the structural representation of inlet tube in Fig. 1；

Fig. 3 is the structural representation of Fig. 1 middle outlet pipes；

Fig. 4 is the structural representation of rectification orifice plate in Fig. 1；

Fig. 5 is the structural representation of energy snubber pipe in Fig. 1.

In figure：The horizontal tank bodies of 1-, 2- inlet tubes, 3- outlets, 4- rectification orifice plates, 5- energy snubber pipes, 6- front buffers Chamber, 7- back buffers chamber, 8- equal pipes, 9- expansion tubes, 10- inlet throttle orifice plates, 11- air admission holes, 12- suction flanges, 13- expands Footpath pipe outlet, 14- outlet-pipe inlets, 15- steam vents, 16- outlet throttling orifice plates, 17- outlet(discharge) flanges, 18- short circuit holes, 19- is whole Discharge orifice, 20- tubular barrels, 21- receives platen, 22- double-helix springs, 23- spring pedestals, 24- pipe end flanges, 25- blind flanges.

Specific embodiment

The utility model is described further below in conjunction with the accompanying drawings.

As shown in figure 1, the gas attenuating device that provides of the utility model it is main by horizontal tank body 1, inlet tube 2, go out Mouthful pipe 3, rectification orifice plate 4 and two energy snubber pipes 5 are constituted, and inlet tube 2 and outlet 3 are respectively arranged on the two ends of horizontal tank body 1, Rectification orifice plate 4 is formed located at the middle part of horizontal tank inner chamber, the horizontal tank inner chamber between inlet tube 2 and rectification orifice plate 4 Front buffer chamber 6, the horizontal tank inner chamber between rectification orifice plate 4 and outlet 3 forms back buffer chamber 7, two energy snubbers Pipe 5 is symmetrically connected on the corresponding horizontal tank wall in front buffer chamber 6 and with front buffer chamber 6.The axle of inlet tube 2 The axis three of line, the axis of outlet 3 and horizontal tank body 1 overlaps and is located along the same line, two axis of energy snubber pipe 5 Overlap and vertical with the axis of horizontal tank body 1.

As shown in Fig. 2 inlet tube is divided into front and rear two sections, leading portion is equal pipe 8, positioned at the outside of horizontal tank body 1 (see Fig. 1), Inlet throttle orifice plate 10 is housed on the inwall of equal pipe 8；Back segment is expansion tube 9, positioned at the inside of horizontal tank body 1 (see Fig. 1), expansion tube Uniform on 9 tube walls to be provided with air admission hole 11, air admission hole 11 is circular hole.Inlet tube left end is provided with suction flange 12, and inlet tube right-hand member is Expansion tube outlet 13.

As shown in figure 3, outlet is a straight tube, it is divided into front and rear two sections, leading portion is located at the inside of horizontal tank body 1 (see Fig. 1), preceding Steam vent 15 is uniformly provided with Duan Guanbi, steam vent 15 is circular hole；Back segment is located at the outside of horizontal tank body 1 (see Fig. 1), in back segment pipe Wall is provided with outlet throttling orifice plate 16.The left end of outlet is outlet-pipe inlet 14, and outlet right-hand member is provided with outlet(discharge) flange 17.

Inlet throttle orifice plate 10 and outlet throttling orifice plate 16 are the circular baffle plate of centre perforate.

As shown in figure 4, the centre of rectification orifice plate is provided with short circuit hole 18, remaining position is uniformly provided with rectification hole 19, whole Discharge orifice 19 is circular hole, and it is 3 that rectification orifice plate 18 sets quantity.

As shown in figure 5, energy snubber the pipe main tubular barrel 20 with pipe end flange 24, blind flange 25, spring by one end Base 23, double-helix spring 22 and constituted by platen 21, spring pedestal 23 is welded in blind flange 25 towards the one of pipe end flange 24 Side, spring pedestal 23 and is respectively welded in the two ends of double-helix spring 22 and axis with double-helix spring 22 hangs down by platen 21 Directly, double-helix spring 22 is engaged with the blind flange 25 of its one end and the pipe end flange 24 of tubular barrel 20 and to form flange and be connected, Double-helix spring 22 is welded with and is stretched into inside tubular barrel 20 by the other end of platen 23, by platen 21 with double-helix spring 22 It is flexible to be moved along the axis of tubular barrel 20；Tubular barrel 20 is with it away from one end of pipe end flange 24 and the outer wall of horizontal tank body 1 Mutually welding is (see Fig. 1).

Claims (5)

1. a kind of gas attenuating device, it is characterised in that：It is main by horizontal tank body, inlet tube, outlet, rectification orifice plate and Two energy snubber pipe compositions, inlet tube and outlet are respectively arranged on the two ends of horizontal tank body, inlet tube axis, outlet axis Overlapped with horizontal tank body axis three and be located along the same line, rectification orifice plate is located at the middle part of horizontal tank inner chamber, import Horizontal tank inner chamber between pipe and rectification orifice plate forms front buffer chamber, in the horizontal tank body between rectification orifice plate and outlet Chamber forms back buffer chamber, two energy snubber pipes symmetrically on the corresponding horizontal tank wall in front buffer chamber and with it is preceding Put cushion chamber to be connected, two axis of energy snubber pipe overlap and vertical with horizontal tank body axis.

2. device according to claim 1, it is characterised in that：The inlet tube is divided into front and rear two sections, and leading portion is equal pipe, Inlet throttle orifice plate is housed in horizontal tank external body, isometrical inside pipe wall；Back segment is expansion tube, positioned at horizontal tank interior, Uniformly air admission hole is provided with expanding tube wall.

3. device according to claim 1, it is characterised in that：The outlet is a straight tube, is divided into front and rear two sections, leading portion Positioned at horizontal tank interior, steam vent uniformly is provided with leading portion tube wall, steam vent is circular hole；Back segment is located at horizontal tank external body, Inside pipe wall is provided with outlet throttling orifice plate.

4. device according to claim 1, it is characterised in that：The centre of the rectification orifice plate is provided with short circuit hole, its Remaining part position is uniformly provided with rectification hole, and rectification hole is circular hole.

5. device according to claim 1, it is characterised in that：The energy snubber pipe is mainly by one end with pipe end flange Tubular barrel, blind flange, spring pedestal, double-helix spring and constituted by platen, spring pedestal is welded in blind flange towards pipe end The side of flange, spring pedestal and is respectively welded that axis in the two ends of spring and with spring is vertical by platen, and spring is with it The blind flange of one end is engaged with the pipe end flange of tubular barrel and to form flange and be connected, and spring is welded with to be stretched by the other end of platen Enter inside tubular barrel, stretched with spring by platen and moved along tubular barrel axis；Tubular barrel is with it away from pipe end flange One end mutually welded with the outer wall of horizontal tank body.