CN207673511U - A kind of diaphragm type active flow pulsation damping device for large reciprocating compressor - Google Patents

Abstract

The utility model belongs to compressor field, and discloses a kind of diaphragm type active flow pulsation damping device for large reciprocating compressor, including surge tank, Signal acquiring and processing device, pulsation active attenuation device and control device；Active attenuation device of pulsing includes piston cylinder, driving device, primary diaphragm, secondary diaphragm, pumping installations and communicating pipe, control device controls the final drive secondary diaphragm vibration of piston movement, generation and pipeline pressure pulsation opposite in phase pressure fluctuation waveform, to weaken the gas that surge tank admission line enters in surge tank cylinder；It part between primary diaphragm and secondary diaphragm of primary diaphragm, cylinder body, secondary diaphragm and collectively forms Helmholtz resonator structure communicating pipe also and can weaken the gas that surge tank admission line enters in surge tank cylinder.The utility model is remarkably improved the effect that declines of reciprocating compressor gas, can greatly reduce the buffer tank volume being arranged in pipeline, reduces raw materials consumption and processing.

Description

A kind of diaphragm type active flow pulsation damping device for large reciprocating compressor

Technical field

The utility model belongs to compressor field, more particularly, to a kind of device of active attenuation gas.

Background technology

Reciprocating compressor, for improving gas pressure and the common apparatus of conveying, being widely used in chemical industry, stone as a kind of The industries such as oil and natural gas, and since reciprocating compressor compression pressure range is wide, it is especially wide in high pressure field application It is general.Reciprocating compressor is a kind of reciprocating volume compressor, and piston moves back and forth under the drive of crank connecting link, simultaneously Air valve is turned on and off under the conditions of certain pressure, leads to intermittent suction and discharge, so that there is pressure in suction air pipe With the cyclic swing of speed, i.e. gas.Excessive gas easily causes pipe vibration, and pipe vibration is easy to make pipeline Attachment, meter life substantially reduce, and violent pipe vibration may be such that pipe connection portion position ruptures, and may cause to let out The safety accidents such as dew.

Commonly gas damped system has active attenuation and passive decaying, decays the most commonly used is passive, such as orifice plate, Vessel buffers etc., these passive type gas attenuating devices are commonly available to a degree of gas decaying.And actively The gas in calculation for pipelines system of compressor can be greatly reduced according to the coherent wave principle of opposite in phase in decaying, for high pressure Field is frequently run onto the case where unadjustable or processing difficulties.Such as a kind of active attenuation screw rod is disclosed in 106382231 A of CN Formula compressor airflow palsating equipment processes duct on exhaust bearing block, has reached the purpose of active attenuation pulsation, the duct one Denier processing is just unadjustable.It is proposed that a kind of pipeline noise reduction system and method, the system pass through in 106469551 A of patent CN It obtains the sound-source signal in pipeline and passes to controller and corresponding inhibition signal is generated according to source of students signal and actively dropped with reaching The purpose made an uproar, the system can be passed to that can generate the inhibition signal being adapted with original signal according to collected signal Passing control device makes driving device generate adaptable ripple frequency at any time.But due to practical attenuation process middle arteries of pulsing Dynamic fluid is often in high pressure conditions, so common pulsation excitation apparatus is difficult to find arteries and veins high pressure, the diaphragm of long lifespan, therefore It is difficult to apply in reciprocating compressor working line or the test pipeline of high pressure.

Utility model content

For the disadvantages described above or Improvement requirement of the prior art, the utility model provides a kind of for large-scale reciprocating compression The diaphragm type active flow pulsation damping device of machine, may be implemented reciprocating compressor gas active attenuation and can be used for height It presses in working media.

To achieve the above object, according to the utility model, a kind of diaphragm type master for large reciprocating compressor is provided It takes offence and flows pulsation damping device, which is characterized in that including surge tank, Signal acquiring and processing device, pulsation active attenuation device And control device, wherein

Admission line and discharge duct are installed on the surge tank, and are provided with diaphragm peace on the side wall of the surge tank Dress opening；

The Signal acquiring and processing device is mounted on the surge tank admission line；

The pulsation active attenuation device include piston cylinder, driving device, primary diaphragm, secondary diaphragm, pumping installations and Communicating pipe, the piston cylinder include the cylinder body on the side wall of the surge tank cylinder and the work in the cylinder body Plug, the driving device are connect with the piston and the control device respectively, for driving the piston to reciprocatingly move, The primary diaphragm is mounted in the cylinder body, and the secondary diaphragm is mounted at the diaphragm construction opening, first film Piece is between the piston and the secondary diaphragm, and there are space A, primary diaphragms and between primary diaphragm and piston There are space Bs, the pumping installations to be connect with the cylinder body between two diaphragms, described for fluid media (medium) is pumped into space A It is installed on secondary diaphragm the communicating pipe, the communicating pipe connection surge tank inner barrel and space B.

Preferably, the fluid media (medium) is oil or water.

Preferably, the communicating pipe is the telescoping tube of adjustable in length.

Preferably, the cylinder body is provided with fluid outlet in the position corresponding to the space A.

In general, it can obtain down the above technical solutions conceived by the present invention are compared with the prior art, Row advantageous effect：

1) the utility model mainly generates antiphase pulsation source, implementation process be signal pickup assembly acquisition buffer tank into The fluctuating signal of mouthful pipeline, in conjunction with fluctuating signal collection point position and surge tank the distance between and pulsation excitation apparatus live It fills in be moved to pulse and is transmitted to the corresponding phase difference of time calculating analysis generation of two diaphragms needs, and control the driving device driving Piston is with certain frequency setting in motion, pulsation phase when excitaton source of pulsing when steady operation reaches surge tank and pipeline gas The opposite in phase for flowing pulsating waveform, to achieve the purpose that pulsation decaying.

2) it is arranged between cavity and surge tank using the cavity between two diaphragms and is allowed to and vibrating diaphragm a communicating pipe Cavity forms a Helmholtz resonator, simultaneously because communicating pipe external and internal pressure is the pressure inside surge tank, therefore pressure-bearing It is small, it is adjustable to adapt to different reciprocating compressor running speeds that pipe range can be set.

3) the utility model can dramatically increase the effect that declines of reciprocating compressor gas, for large reciprocating pressure Contracting machine pipeline and corresponding test system pipeline especially high-pressure work pipeline can greatly reduce be arranged in pipeline it is slow Tank volume is rushed, raw materials consumption and processing are reduced.Gas reduction can improve to a certain extent in another aspect pipeline The measuring accuracy and service life of instrument and meter.What is more important Large-scale High-Pressure reciprocating compressor pipeline interior air-flow pulsation drop It is low to significantly reduce Management of Pipeline Mechanical Equipment vibration, that is, reduce conduit fittings and loosen the possibility for connecting fracture with pipeline, this is right It is significant in production safety.

Description of the drawings

Fig. 1 is the schematic front view of the utility model；

Fig. 2 is the schematic diagram of the part-structure of pulsation active attenuation device in the utility model；

Fig. 3 is the schematic top plan view of the utility model.

Specific implementation mode

In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain The utility model is not used to limit the utility model.In addition, institute in the various embodiments of the present invention described below The technical characteristic being related to can be combined with each other as long as they do not conflict with each other.

Referring to Fig.1~Fig. 3, a kind of diaphragm type active flow pulsation damping device for large reciprocating compressor, including Surge tank, Signal acquiring and processing device, pulsation active attenuation device and control device, wherein

Admission line 1 and discharge duct 14 are installed on the surge tank, and film is provided on the side wall of the surge tank Piece construction opening；The surge tank skirt 12 and set that surge tank includes surge tank pedestal 13, is arranged on the surge tank pedestal 13 The surge tank cylinder 11 on the surge tank skirt 12 is set, admission line 1 and discharge duct 14 are arranged at the surge tank On the side wall of cylinder 11；

The Signal acquiring and processing device be mounted on the surge tank admission line 1 on, for obtain surge tank into The pulsating waveform that air-flow in feed channel 1 generates；

The pulsation active attenuation device includes piston cylinder, driving device 5, primary diaphragm 7, secondary diaphragm 3, pumping installations With communicating pipe 2, the piston cylinder include mounted on the surge tank cylinder 11 side wall on cylinder body and be mounted on the cylinder body Interior piston 6, the driving device 5 are connect with the piston 6 and the control device respectively, for driving the piston 6 It reciprocatingly moves, the primary diaphragm 7 is mounted in the cylinder body, and the secondary diaphragm 3 is mounted on the diaphragm construction opening Place, the primary diaphragm 7 exist between the piston 6 and the secondary diaphragm 3 between primary diaphragm 7 and piston 6 Space A, there are space Bs, the pumping installations to be connect with the cylinder body between primary diaphragm 7 and secondary diaphragm 3, for will flow Body medium is pumped into space A, is installed on the secondary diaphragm 3 communicating pipe 2, and the communicating pipe 2 is connected in surge tank cylinder 11 Portion and space B；The pumping installations includes plunger pump 9 and the fluid injection conduit 10 that is connected on plunger pump 9, is provided on cylinder body Fluid inlet 8, such fluid injection conduit 10 can inject fluid media (medium) at the space A in cylinder body.

The control device is moved based on the pulsating waveform that compressed gas in surge tank admission line 1 generates to control piston 6 It is dynamic, to make primary diaphragm 7 generate vibration, and then secondary diaphragm 3 is driven to vibrate, with weaken surge tank admission line 1 enter it is slow The pulsation that the air-flow rushed in canister body 11 generates；

In addition, part, secondary diaphragm 3 and the company of the primary diaphragm 7, cylinder body between primary diaphragm 7 and secondary diaphragm 3 Siphunculus 2 collectively forms Helmholtz resonator structure, the Helmholtz resonator structure can also weaken surge tank admission line 1 into Enter the pulsation that the air-flow in surge tank cylinder 11 generates.

Further, the pulsating waveform phase that the vibration of the secondary diaphragm 3 generates enters surge tank with surge tank admission line 1 The pulsating waveform phase of air-flow in cylinder 11 differs 180 °.

Further, the fluid media (medium) is oil or water.

Further, the communicating pipe 2 is the telescoping tube of adjustable in length.

Further, the cylinder body is provided with fluid outlet 4 in the position corresponding to the space A, for according to space B Interior gas pressure carrys out the Fluid pressure in adjustment space A.

The utility model is that one kind being used for large reciprocating compressor pipe-line system gas active attenuation device, mainly It is to generate antiphase pulsation source and Helmholtz resonator to inhibit principle.Implementation process is signal pickup assembly acquisition buffer tank The fluctuating signal of inlet pipeline, in conjunction with fluctuating signal collection point position and surge tank the distance between and pulsation excitation apparatus Piston 6 is moved to pulsation and is transmitted to the corresponding phase difference of time calculating analysis generation of two diaphragms needs, and controls the driving device 5 Drive piston 6 with certain frequency setting in motion.Pulse when steady operation pulsation phase of excitaton source when reaching surge tank with The phase of chimneying pulsating waveform differs 180 °, to achieve the purpose that pulsation decaying.Pulsation damping device is utilized in two diaphragms Between cavity and cavity and surge tank between communicating pipe 2 constitute a Helmholtz resonator can play reduction and the last of the twelve Earthly Branches The same or similar pulsation of Mu Huozi acoustic resonator resonant frequencies.

In order to realize that the utility model can be used in large reciprocating compressor high-pressure work pipeline, it is therefore desirable to setting with The adaptable excitation apparatus for stablizing adjustable pulsation of its high-pressure working medium, as shown in Figure 1, control device can control driving Device 5 is according to the pulsating wave of the fluctuating signal same frequency arrived with signal acquisition, and 7 side of primary diaphragm is the low oil of compressibility, separately Side is working media identical with buffer tank pressure, according to the collected pressure of signal pickup assembly by plunger pump 9 to note The oil for entering relevant pressure, after oil pressure is met the requirements, 6 setting in motion of piston drives the pressure of the generation respective phase of secondary diaphragm 3 Pulsation.

If the insertion of Fig. 1 Helmholtz resonators is mounted in pressure fluctuation excitation apparatus, independent peace on the one hand can be reduced The inconvenience brought is filled, on the other hand the pressure in surge tank can be introduced into the cavity between two diaphragms, pulsation excitation dress is made It sets relatively easy.Further, since there may be variable parameter operations for compressor set, therefore here can be by the pipe range of communicating pipe 2 It is set as adjustable, to adapt to the different running speed of reciprocating compressor.

Work as compressor shutdown, when pipe-line system pressure continuously decreases, stops the work of pulsation excitation apparatus, and pass through fluid Outlet 4 reduces oily lateral pressure.

The pressure of 3 both sides of the secondary diaphragm pressure difference that quite therefore diaphragm is born is small, and service life is long, since piston 6 compresses The medium of machine compression is oil, and the pressure of foundation of oil is improved by plunger pump 9, can reach quite high pressure, therefore the air-flow arteries and veins Dynamic active attenuation device can be used for Large-scale High-Pressure reciprocating compressor working line.Simultaneously because the adjustable range of oil pressure is wide, Therefore the application operating mode of the utility model is wide.

The driving frequency of the utility model is that the signal acquired according to signal pickup assembly works, therefore working frequency Can be identical and the stimulating frequency of device can be adjusted according to the signal of monitoring with the compressor ripple frequency excited, Greatly strengthen the adaptability of the utility model.

The utility model constitutes the last of the twelve Earthly Branches nurse setting communicating pipe 2 between the cavity and surge tank that two diaphragms of main part are formed Hereby acoustic resonator suddenly, it is more convenient for Helmholtz resonator and pulsation excitation apparatus compared to installing simultaneously, simultaneously because even The length adjustability taken over, also increases the applicability of Helmholtz resonator attenuating pulsation.

Actively pulsation decaying and Helmholtz resonator can be reached by the utility model jointly to decay gas, because This gas attenuating is good.Buffer tank volume can be greatly reduced, raw material are saved, reduces the work such as corresponding welding Amount, while pressure fluctuation reduces the measuring accuracy and service life that can improve the instrument and meter being arranged in pipeline, reduces pipeline Vibration reduces pipeline fittings and loosens, and the possibility of pipeline connection fracture is conducive to keep the safety in production.

As it will be easily appreciated by one skilled in the art that the above is only the preferred embodiment of the utility model only, not To limit the utility model, any modification made within the spirit and principle of the present invention, equivalent replacement and change Into etc., it should be included within the scope of protection of this utility model.

Claims (4)

1. a kind of diaphragm type active flow pulsation damping device for large reciprocating compressor, which is characterized in that including buffering Tank, Signal acquiring and processing device, pulsation active attenuation device and control device, wherein

Admission line and discharge duct are installed on the surge tank, and is provided with diaphragm installation on the side wall of the surge tank and opens Mouthful；

The Signal acquiring and processing device is mounted on the surge tank admission line；

The pulsation active attenuation device includes piston cylinder, driving device, primary diaphragm, secondary diaphragm, pumping installations and is connected to Pipe, the piston cylinder include mounted on the surge tank cylinder side wall on cylinder body and the piston in the cylinder body, The driving device is connect with the piston and the control device respectively, for driving the piston to reciprocatingly move, institute Primary diaphragm is stated in the cylinder body, the secondary diaphragm is mounted at the diaphragm construction opening, the primary diaphragm Between the piston and the secondary diaphragm, and there are space A, primary diaphragms and second between primary diaphragm and piston There are space Bs, the pumping installations to be connect with the cylinder body between diaphragm, for fluid media (medium) is pumped into space A, described It is installed on two diaphragms the communicating pipe, the communicating pipe connection surge tank inner barrel and space B.

2. a kind of diaphragm type active flow pulsation damping device for large reciprocating compressor according to claim 1, It is characterized in that, the fluid media (medium) is oil or water.

3. a kind of diaphragm type active flow pulsation damping device for large reciprocating compressor according to claim 1, It is characterized in that, the communicating pipe is the telescoping tube of adjustable in length.

4. a kind of diaphragm type active flow pulsation damping device for large reciprocating compressor according to claim 1, It is characterized in that, the cylinder body is provided with fluid outlet in the position corresponding to the space A.