CN208996961U - Helical-lobe compressor and its gas attenuating device - Google Patents
Helical-lobe compressor and its gas attenuating device Download PDFInfo
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- CN208996961U CN208996961U CN201821526399.7U CN201821526399U CN208996961U CN 208996961 U CN208996961 U CN 208996961U CN 201821526399 U CN201821526399 U CN 201821526399U CN 208996961 U CN208996961 U CN 208996961U
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- intubation
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- lobe compressor
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Abstract
The utility model provides a kind of helical-lobe compressor and its gas attenuating device, and gas attenuating device includes air inlet pipe, shell, intubation and exhaust pipe, and the cavity inside gas attenuating device is divided into sprue and collateral branch's runner two parts by intubation.Sprue air-flow is fed directly to exhaust pipe from air inlet pipe, and then biasing of collateral branch's runner air-flow after air inlet pipe inflow by intubation is also flowed into exhaust pipe, the air-flow in sprue and collateral branch's runner is discharged after finally converging in exhaust pipe from exhaust pipe.According to the operating condition of helical-lobe compressor, determine the length difference of sprue and collateral branch's runner, so that sprue and collateral branch's runner interior air-flow is pulsed and generates 180 ° of phase differences in exhaust pipe, mutually decay counteracting because of opposite in phase, the gas of decaying helical-lobe compressor, reduces the vibration noise of helical-lobe compressor.The utility model structure is simple, and spatial volume is small, and the pressure loss is small, and practical application is strong, and effect of vibration and noise reduction is good.
Description
Technical field
The utility model belongs to fluid machinery noise reduction technology field, is related to helical-lobe compressor gas decaying dress
It sets.
Background technique
Helical-lobe compressor is widely used in stone as a kind of common apparatus for improving gas pressure and conveying gas
The industrial circles such as oil, natural gas, chemical industry, metallurgy.Helical-lobe compressor is a kind of rotary type displacement compressor, motor driven yin, yang
Rotor intermeshing forms the volume variation of working chamber, realize the periodic air-breathing of helical-lobe compressor, compression, exhaust work
Process generates gas along with the cyclic fluctuation of gas pressure and flow in discharge chamber body.Helical-lobe compressor is worked
Gas in journey can not only reduce the volumetric efficiency of helical-lobe compressor, increase the power consumption of helical-lobe compressor, but also
Meeting induced vibration noise influences equipment acoustic noise even Pipeline Fatigue Life.
Patent US2006/0243520A1 discloses a kind of helical-lobe compressor acoustic attenuation device, applies in helical-lobe compressor
On exhaust pipe, anti-formula silencer is designed to using exhaust pipe and a biggish closed cavity, reaches the mesh for reducing aerodynamic noise
's.But the program not only results in pressure at expulsion loss increase, increases compressor overall power, and increase compressor air-discharging
The volume of section causes compressor three-dimensional dimension to increase, cost increase.With the development of helical-lobe compressor technology and technique, compression
Body product miniaturization has become mainstream, smaller and smaller, huge without the space installation volume noise elimination of exhaust cavity space
Therefore device has the demand for the helical-lobe compressor gas attenuating device that the pressure loss is low, three-dimensional dimension is small and day all
Increase.
Summary of the invention
The utility model aims to solve the problem that the gas problem of helical-lobe compressor, provides a kind of helical-lobe compressor and its gas
Pulsation damping device is flowed, the helical-lobe compressor gas attenuating device pressure loss is low, three-dimensional dimension is small, and can decay screw rod pressure
The exhaust airstream of contracting machine is pulsed, and can be used for helical-lobe compressor exhaust system.
In order to achieve the above objectives, the utility model uses following technical scheme:
A kind of helical-lobe compressor gas attenuating device, the gas attenuating device include air inlet pipe, shell, intubation
And exhaust pipe, the radially successively nested setting from outside to inside of the shell, intubation and exhaust pipe, and it is spaced between each other,
One end of air inlet pipe is arranged on one end of shell, and one end of intubation and exhaust pipe is opposite with one end of the air inlet pipe, and inserts
Pipe and exhaust pipe and one end of the air inlet pipe are spaced, and the other end of exhaust pipe stretches out the other end of shell, be intubated and into
The opposite one end of tracheae is provided with the end plate with intubation axial aperture, and exhaust pipe one end opposite with air inlet pipe is arranged at the end
On plate, exhaust pipe is connected by intubation axial aperture with shell and air inlet pipe, and the other end closing of intubation is (for example, by solid
It is scheduled on the exhaust pipe extension end of shell and closes), it is provided on exhaust pipe positioned at the intracorporal exhaust pipe radial aperture of shell, intubation
On be provided with positioned at the intracorporal intubation radial aperture of shell.
Preferably, the quantity of the intubation axial aperture is one or more, and the shape of aperture is round, rectangle or ellipse
Shape.
Preferably, the quantity of the intubation radial aperture is one or more；The quantity of exhaust pipe radial aperture be 1 or
It is multiple.
Preferably, the shape of the intubation radial aperture and exhaust pipe radial aperture is round, rectangle or ellipse.
Preferably, space in shell (cavity runner) is divided into sprue and collateral branch's runner by the intubation；Sprue is certainly
Air inlet pipe successively through shell, intubation axial aperture to exhaust pipe airflow channel, make air-flow directly from air inlet pipe flow into exhaust pipe；
Collateral branch's runner is from shell and the interval region of intubation successively through being intubated interval region and the row of radial aperture, intubation and exhaust pipe
Tracheae radial aperture makes biasing of the air-flow after air inlet pipe inflow by intubation enter back into exhaust to the airflow channel of exhaust pipe
The length difference of pipe, collateral branch's runner and sprue is 1/2 wavelength length corresponding to helical-lobe compressor air motion frequency to be decayed
Odd-multiple.
Preferably, it is described intubation radial aperture position of opening be located at intubation two end faces between (close to or not close to
End face)；The position of opening of exhaust pipe radial aperture be located between two end faces of exhaust pipe (close to or not close to end face, for example,
Close to the end face for being located at intubation axial aperture side).So as to easily adjust the quantity (one or more) of collateral branch's runner with
And the length (may be the same or different) of collateral branch's runner.
Application of the above-mentioned helical-lobe compressor gas attenuating device in helical-lobe compressor noise reduction, the gas decline
Subtract device to be installed on the grate flow channel of helical-lobe compressor, installation number be 1 (exclusives use) or multiple (connect or simultaneously
Connection uses).
Above-mentioned helical-lobe compressor gas attenuating device as equipment or pipeline exhaust silencer (by air inlet pipe, shell,
Intubation and exhaust pipe constitute) application.
A kind of helical-lobe compressor, including gas attenuating device, the gas attenuating device include air inlet pipe, shell
Body, intubation and exhaust pipe, shell, intubation and exhaust pipe are radially successively nested from outside to inside, and spaced between each other, into
One end of tracheae is arranged on one end of shell, and the other end of air inlet pipe is connected with the exhaust bearing block of the helical-lobe compressor,
One end of intubation and exhaust pipe is opposite with air inlet pipe, and the other end of exhaust pipe stretches out shell and stretches to the helical-lobe compressor
It is vented in oil content barrel, is intubated one end opposite with air inlet pipe and is provided with the end plate with intubation axial aperture, exhaust pipe and air inlet
Manage opposite one end to be arranged on the end plate, and be connected by being intubated axial aperture with shell and air inlet pipe, intubation it is another
End seal is closed, and is respectively arranged on exhaust pipe and intubation positioned at the intracorporal exhaust pipe radial aperture of shell and intubation radial aperture.
Space in shell is divided into sprue and collateral branch's runner by the intubation；Sprue is from air inlet pipe through shell, intubation
Axial aperture to exhaust pipe airflow channel；Collateral branch's runner is to be intubated radial aperture from shell and the interval region of intubation, inserted
Airflow channel of the interval region and exhaust pipe radial aperture of pipe and exhaust pipe to exhaust pipe, the length of collateral branch's runner and sprue
Difference is the odd-multiple of 1/2 wavelength length corresponding to helical-lobe compressor air motion frequency to be decayed.
The position of opening of the intubation radial aperture is located between two end faces of intubation；The aperture of exhaust pipe radial aperture
Position is located between two end faces of exhaust pipe.
The beneficial effects of the utility model are embodied in:
The utility model proposes helical-lobe compressor gas device in using exhaust pipe, intubation be successively embedded in shell
And the mode of intubation, exhaust pipe radial aperture is opened up, it can be based on sound wave interference principle, reach the mesh of decaying gas
, solve the problems, such as the vibrating noise that the pulsation of helical-lobe compressor exhaust airstream induces.The gas attenuating device has space
Small in size, the features such as pressure loss is few, structure is simple, not only manufactures the strong operability of installation, but also has vibration and noise reducing effect
Fruit.
Further, the utility model proposes helical-lobe compressor gas attenuating device, devise collateral branch's runner and
Two runners of sprue, can by optimize collateral branch's runner and sprue length difference, change collateral branch's runner interior air-flow pulsation with
The time difference of sprue gas, make the half period of the two time difference gas to be decayed, i.e. the two phase difference is
180 degree, so that the gas in two runners be made to cancel out each other because of opposite in phase, helical-lobe compressor is arranged to improve
The inhibitory effect and effect of vibration and noise reduction of gas gas.
Detailed description of the invention
Fig. 1 is the principles of the present invention figure；Wherein: (a) each runner interior air-flow pulsation before decaying；(b) decay final vacuum
The pulsation of pipe interior air-flow；
Fig. 2 is the structural schematic diagram of helical-lobe compressor gas attenuating device in the utility model embodiment；
Fig. 3 is the runner schematic diagram of helical-lobe compressor gas attenuating device shown in Fig. 2；
Fig. 4 is the three-dimensional structure (a) and plane (b) schematic diagram using the helical-lobe compressor example of the utility model；
In figure: 1. gas attenuating devices, 2. air inlet pipe, 3. exhaust pipes, 4. shells, 5. intubations, 6. intubation radial directions are opened
Hole, 7. exhaust pipe radial apertures, 8. intubation axial apertures, the pulsation of 10. air inlet pipe inlet air flows, sprue gas in 11. exhaust pipes
Collateral branch's runner gas, 13. exhaust outlet gases, 21. exhaust bearing blocks, 22. rows in stream pulsation, 12. exhaust pipes
Gas oil content barrel, 23. oil strainer porous plates.
Specific embodiment
The utility model is described in further details with reference to the accompanying drawings and examples.
The gas phenomenon of helical-lobe compressor exhaust is determined by its working principle, is difficult in helical-lobe compressor yin-yang
Eliminating gas flow pulsation in rotor engagement process.Therefore, decay gas in helical-lobe compressor exhaust process, controls air-flow arteries and veins
The dynamic helical-lobe compressor noise and vibration induced is to solve the problems, such as the optimal selection of helical-lobe compressor vibration noise, therefore this is practical
The gas attenuating device 1 of novel proposition is directly installed on the grate flow channel of helical-lobe compressor, helical-lobe compressor of decaying
Gas improves the vibration noise of helical-lobe compressor.
The utility model proposes gas attenuating device 1 consider the periodically special of helical-lobe compressor gas comprehensively
Property, fully consider equipment installation space problem, the basic principle based on sound wave interference, 1 working principle of gas attenuating device
As shown in Figure 1, the gas of two-way opposite in phase is overlapped mutually counteracting, the air-flow for the helical-lobe compressor that can decay to greatest extent
Pulsation.
Referring to fig. 2, Fig. 3 and Fig. 4, the utility model proposes gas attenuating device 1 mainly by air inlet pipe 2, shell
4, intubation 5 and exhaust pipe 3 form, 1 one end of gas attenuating device (referring specifically to 2 entrance of air inlet pipe) the connecting screw compressor
It is vented bearing block 21, the other end (referring specifically to close to 4 end of shell of 3 outlet side of exhaust pipe) is fixed on oil strainer porous plate 23
On, the outlet of exhaust pipe 3 stretches in exhaust oil content barrel 22 across oil strainer porous plate 23.Intubation 5, which decays gas, to be filled
The cavity runner for setting 1 inside (referring specifically in shell 4) is divided into sprue and collateral branch's runner two parts.Sprue makes air-flow from air inlet
2 entrance of pipe flows into, and enters exhaust pipe 3 through intubation axial aperture 8, and exported and flowed out by exhaust pipe 3；Collateral branch's runner make air-flow from into
2 entrance of tracheae flows into, and exhaust pipe 3, the interior two-way air-flow in collateral branch's runner of sprue are flowed into after the bias of intubation 5
It exports and is discharged from exhaust pipe 3 after converging in exhaust pipe 3.Helical-lobe compressor discharge has certain pressure fluctuation (i.e. gas)
Gas, gas attenuating device 1 is entered after being vented bearing block 21, is declined with the gas of gas by gas
After the decaying for subtracting device 1, it is discharged into exhaust oil content barrel 22.
Air-flow is after the air inlet pipe 2 for entering gas attenuating device 1, since sprue length is shorter, and collateral branch's runner
Longer, the gas with certain gas (i.e. pressure oscillation), it is (such as close that a part by sprue first reaches exhaust pipe
It is intubated in the exhaust pipe end of axial aperture side), another part delays arrival exhaust pipe, the gas in collateral branch's runner by collateral branch's runner
For body when reaching exhaust pipe, gas can lag behind the gas reached through sprue in phase, that is, there is certain phase
Potential difference, when the gas 180 degree phase of the gas of collateral branch's runner lag sprue, in sprue and collateral branch's runner
Gas mutually decays after converging in exhaust pipe 3 because of opposite in phase counteracting in two-way air-flow, to reach active attenuation
The purpose of gas.Therefore it according to the operating condition of helical-lobe compressor, determines the length difference of sprue and collateral branch's runner, makes two
The pulsation of runner interior air-flow generates 180 degree phase difference, so that the gas for helical-lobe compressor of decaying, reduces helical-lobe compressor
Vibration noise.
Because sound wave transmitting is specific periodically, when the pulsation lag sprue interior air-flow pulsation of collateral branch's runner interior air-flow
When 180 degree of odd-multiple phases, the gas of two-way can also be made to cancel out each other because of opposite in phase, to reach attenuating gas
Flow the purpose of pulsation.Therefore, gas attenuating device 1 can be with the fundamental frequency of effective attenuation gas and its odd number frequency multiplication.
In conclusion one collateral branch's runner of design, it can be with the fundamental frequency of effective attenuation gas and its odd number frequency multiplication (example
Such as, 1 frequency multiplication, 3 frequencys multiplication, 5 frequencys multiplication ...).For 2 frequencys multiplication and its odd number frequency multiplication of the helical-lobe compressor gas that decays simultaneously
(for example, 2 frequencys multiplication, 6 frequencys multiplication, 10 frequencys multiplication ...) can increase the quantity of collateral branch's runner (for example, opening by increasing intubation radial direction
The quantity in hole 6 and the quantity of exhaust pipe radial aperture 7, the quantity of Lai Zengjia collateral branch runner), and change collateral branch's runner and sprue
Length difference (for example, by adjusting intubation radial aperture 6 position and exhaust pipe radial aperture 7 position, come change collateral branch stream
The length difference in road and sprue), come 2 frequencys multiplication and its odd number frequency multiplication of the gas that decays.Therefore pass through the quantity of collateral branch's runner
With the optimization of length, the air-flow of helical-lobe compressor fundamental frequency and its odd number frequency multiplication and 2 frequencys multiplication and its odd number frequency multiplication can be eliminated simultaneously
Pulsation.
Working principle of the utility model is:
The gas attenuating device 1 of the utility model is a kind of to reach inhibition for the helical-lobe compressor gas that decays
Vibrational excitation caused by gas and the vibration and noise reducing device for reducing the aerodynamic noise that air-flow induces.Helical-lobe compressor body row
Gas enters helical-lobe compressor gas attenuating device 1 by exhaust bearing block 21.In gas attenuating device 1, spiral shell
Bar compressor air-discharging is divided into two parts, and a part drains into exhaust pipe 3 from sprue；Another part also draws from collateral branch's runner
It flows in exhaust pipe 3.Since there are path length differences with collateral branch's runner for sprue, then the time difference is certainly existed, when sprue length
Path length difference between collateral branch's flow channel length be when half period (i.e. phase difference differs 180 degree) for air motion frequency of decaying,
It due to opposite in phase, cancels each other out when being overlapped mutually, mutually decay gas amplitude, so that reaching reduces helical-lobe compressor row
The purpose of gas system and pipe-line system vibration noise.
In short, can decay screw compression the utility model proposes a kind of helical-lobe compressor gas attenuating device
The gas amplitude of machine reduces the vibration noise water of helical-lobe compressor exhaust system and pipe-line system that gas induces
Standard, effect of vibration and noise reduction are good.And structure is simple, spatial volume is small, and the pressure loss is small, manufactures the strong operability of installation.
Claims (9)
1. a kind of helical-lobe compressor gas attenuating device, it is characterised in that: the gas attenuating device includes air inlet pipe
(2), shell (4), intubation (5) and exhaust pipe (3), the shell (4), intubation (5) and exhaust pipe (3) radially from outside to inside according to
Secondary nesting, and it is spaced between each other, one end of air inlet pipe (2) is arranged on one end of shell (4), is intubated (5) and is vented
Relatively, the other end of exhaust pipe (3) stretches out shell (4) for the one end and air inlet pipe (2) for managing (3), is intubated (5) and air inlet pipe (2) phase
Pair one end be provided with intubation axial aperture (8) end plate, exhaust pipe (3) and air inlet pipe (2) it is opposite one end setting exists
On the end plate, and it is connected by being intubated axial aperture (8) with shell (4) and air inlet pipe (2), the other end closing of intubation (5),
The exhaust pipe radial aperture (7) and intubation radial aperture being respectively arranged on exhaust pipe (3) and intubation (5) in shell (4)
(6)。
2. helical-lobe compressor gas attenuating device according to claim 1, it is characterised in that: the intubation is axially opened
The quantity in hole (8) is one or more, and the shape of the aperture is round, rectangle or ellipse.
3. helical-lobe compressor gas attenuating device according to claim 1, it is characterised in that: the intubation is radially opened
The quantity in hole (6) is one or more；The quantity of exhaust pipe radial aperture (7) is one or more.
4. helical-lobe compressor gas attenuating device according to claim 1, it is characterised in that: the intubation is radially opened
The shape of hole (6) and exhaust pipe radial aperture (7) is round, rectangle or ellipse.
5. helical-lobe compressor gas attenuating device according to claim 1, it is characterised in that: the intubation is radially opened
The position of opening in hole (6) is located between two end faces of intubation (5)；The position of opening of exhaust pipe radial aperture (7) is located at exhaust
Between two end faces for managing (3).
6. helical-lobe compressor gas attenuating device according to claim 1, it is characterised in that: the intubation (5) will
Shell (4) interior space is divided into sprue and collateral branch's runner；Sprue is from air inlet pipe (2) through shell (4), intubation axial aperture
(8) to the airflow channel of exhaust pipe (3)；Collateral branch's runner is from the interval region of shell (4) and intubation (5) through being intubated radial aperture
(6), airflow channel of the interval region and exhaust pipe radial aperture (7) of intubation (5) and exhaust pipe (3) to exhaust pipe (3), collateral branch
The length difference of runner and sprue is the odd-multiple of 1/2 wavelength length corresponding to helical-lobe compressor air motion frequency to be decayed.
7. a kind of helical-lobe compressor, it is characterised in that: including gas attenuating device (1), the gas attenuating device
It (1) include air inlet pipe (2), shell (4), intubation (5) and exhaust pipe (3), shell (4), intubation (5) and exhaust pipe (3) are radially
Successively nested from outside to inside and spaced between each other, one end of air inlet pipe (2) is arranged on one end of shell (4), air inlet
Pipe (2) the other end be connected with the exhaust bearing block (21) of the helical-lobe compressor, intubation (5) and exhaust pipe (3) one end and
Relatively, the other end of exhaust pipe (3) stretches out shell (4) and stretches to the exhaust oil content barrel of the helical-lobe compressor air inlet pipe (2)
(22) in, intubation (5) and air inlet pipe (2) opposite one end are provided with the end plate with intubation axial aperture (8), exhaust pipe (3)
One end opposite with air inlet pipe (2) is arranged on the end plate, and passes through intubation axial aperture (8) and shell (4) and air inlet pipe (2)
It is connected, the other end of intubation (5) is closed, and is respectively arranged with the exhaust in shell (4) in exhaust pipe (3) and intubation (5)
Pipe radial aperture (7) and intubation radial aperture (6).
8. helical-lobe compressor according to claim 7, it is characterised in that: shell (4) interior space is divided by the intubation (5)
Sprue and collateral branch's runner；Sprue is the gas from air inlet pipe (2) through shell (4), intubation axial aperture (8) to exhaust pipe (3)
Circulation road；Collateral branch's runner is from the interval region of shell (4) and intubation (5) through intubation radial aperture (6), intubation (5) and exhaust
Manage the airflow channel of the interval region and exhaust pipe radial aperture (7) of (3) to exhaust pipe (3), the length of collateral branch's runner and sprue
Degree difference is the odd-multiple of 1/2 wavelength length corresponding to helical-lobe compressor air motion frequency to be decayed.
9. helical-lobe compressor according to claim 7, it is characterised in that: the position of opening of intubation radial aperture (6)
Between two end faces of intubation (5)；The position of opening of exhaust pipe radial aperture (7) is located at two end faces of exhaust pipe (3)
Between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821526399.7U CN208996961U (en) | 2018-09-17 | 2018-09-17 | Helical-lobe compressor and its gas attenuating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821526399.7U CN208996961U (en) | 2018-09-17 | 2018-09-17 | Helical-lobe compressor and its gas attenuating device |
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| CN208996961U true CN208996961U (en) | 2019-06-18 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980049A (en) * | 2018-09-17 | 2018-12-11 | 西安交通大学 | A kind of helical-lobe compressor gas attenuating device |
| WO2022037126A1 (en) * | 2020-08-19 | 2022-02-24 | 珠海格力电器股份有限公司 | Gas flow pulsation damping device, and screw compressor having same |
-
2018
- 2018-09-17 CN CN201821526399.7U patent/CN208996961U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108980049A (en) * | 2018-09-17 | 2018-12-11 | 西安交通大学 | A kind of helical-lobe compressor gas attenuating device |
| CN108980049B (en) * | 2018-09-17 | 2023-09-26 | 西安交通大学 | Air flow pulsation attenuation device of screw compressor |
| WO2022037126A1 (en) * | 2020-08-19 | 2022-02-24 | 珠海格力电器股份有限公司 | Gas flow pulsation damping device, and screw compressor having same |
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