CN206175222U - Helical -lobe compressor gas device of initiatively attenuateing - Google Patents
Helical -lobe compressor gas device of initiatively attenuateing Download PDFInfo
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- CN206175222U CN206175222U CN201621187048.9U CN201621187048U CN206175222U CN 206175222 U CN206175222 U CN 206175222U CN 201621187048 U CN201621187048 U CN 201621187048U CN 206175222 U CN206175222 U CN 206175222U
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- lobe compressor
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Abstract
The utility model discloses a helical -lobe compressor gas device of initiatively attenuateing. It is the gas decay flange of compriseing exhaust drill way runner and other branch fluid channel, and gas decay flange one end is connected with helical -lobe compressor exhaust flange, and the other end is connected with the exhaust bearing frame, divides into two the tunnel with the helical -lobe compressor exhaust, flows into from exhaust drill way runner entry all the way, flows out from exhaust drill way runner export, and another way flows into from other branch fluid channel entry, follow other branch fluid channel and export the outflow, then two tunnel gases merge into again of the same kind, in the bearing frame runner that exhausts. According to helical -lobe compressor's operating condition, confirm the exhaust drill way runner of gas decay flange and other branch fluid channel's length difference, make two tunnel gases at 180 degrees phase differences of the exhaust fashionable production of bearing frame runner internal exchange, from initiatively decay helical -lobe compressor's gas, reduction helical -lobe compressor's vibration noise of source. The utility model discloses the maneuverability of simple structure, manufacturing installation is strong, and damping and denoising effect is good.
Description
Technical field
The utility model belongs to fluid machinery noise reduction technology field, is related to a kind of active attenuation helical-lobe compressor air-flow
Palsating equipment.
Background technology
Helical-lobe compressor as it is a kind of for improve gas pressure and conveying gas common apparatus, oil, natural gas,
The fields such as chemical industry, metallurgy are widely applied.Helical-lobe compressor is a kind of rotary type displacement compressor, and yin, yang rotor is mutual
Engagement, synchronous rotary forms the volume change of working chamber, so as to realize the course of work of air-breathing, compression, exhaust.Screw compression
Machine is periodically inhaled, is vented the cyclic fluctuation that can cause gas pressure and flow in discharge chamber body, i.e. gas.Gas
The volumetric efficiency of helical-lobe compressor can be not only reduced, increases the power consumption of helical-lobe compressor, but also exhaust cavity can be excited
Vibration induction aerodynamic noise.
Prior art have developed various different gas attenuating devices, such as Helmholtz's gas damping chamber and many
Orifice plate gas damping chamber etc..But these attenuating device structure volumes are larger, install and use and are restricted, and are generally applicable to
The vibration and noise reducing of pipe-line system, it is impossible to the gas of helical-lobe compressor of decaying from source, reduces the vibration of helical-lobe compressor
Noise.
Utility model content
In order to overcome the vibration of existing helical-lobe compressor exhaust airstream pulsation induction and the problem of noise, screw compression is reduced
The gas amplitude of machine, the utility model provides a kind of active attenuation helical-lobe compressor gas device.
The utility model solves the technical scheme that its technical problem adopted：
A kind of active attenuation helical-lobe compressor gas device, the active attenuation helical-lobe compressor gas device
Including the gas decay flange being arranged between helical-lobe compressor body exhaust flange and exhaust bearing block flange, the gas
The runner of stream pulsation decay flange is made up of collateral branch's runner and vent ports runner, the gas of collateral branch's runner and vent ports
The gas of runner produces 180 degree phase difference, and then active attenuation helical-lobe compressor when being vented and converging in bearing block runner
Gas amplitude, reduce gas induction helical-lobe compressor gas extraction system and pipe-line system vibration noise level.
It is further：The quantity of gas decay flange is one or more, when declining including multiple gases
When subtraction is blue, each gas decay flange is arranged in series.
It is further：The quantity of collateral branch's runner of the gas decay flange is one or more.
It is further：The length of collateral branch's runner is helical-lobe compressor with the length difference of the length of vent ports runner
The odd-multiple of 1/2 wavelength length corresponding to air motion frequency to be decayed.
It is further：The quantity of the fluid intake of collateral branch's runner is one or more, and fluid issuing quantity is 1
Or it is multiple.
It is further：Collateral branch's runner is shaped as grooved, circular or oval.
Active attenuation helical-lobe compressor gas device of the present utility model is a kind of connecting screw rod compressor air-discharging method
The blue gas decay flange with exhaust bearing block flange.Gas decays flange runner by vent ports runner and collateral branch
Runner two parts are constituted.The exhaust of helical-lobe compressor is divided into into two-way, all the way by way of vent ports runner, another road Jing collateral branch
Runner, final two-way helical-lobe compressor exhaust airstream pulsation converges in exhaust bearing block runner.It is critical that optimization collateral branch stream
The cross sectional shape in road, adjusts the length difference of collateral branch's flow channel length and vent ports flow channel length, makes two-way gas in exhaust
180 degree phase difference is produced when converging in bearing block runner, mutually decay counteracting because of opposite in phase, the active attenuation spiral shell from source
The gas of bar compressor, reduces the vibration noise of helical-lobe compressor.
The utility model considers the periodic characteristic of helical-lobe compressor gas comprehensively, takes into full account installation space
Problem, has merged the mentality of designing of active damping noise reduction, and based on the general principle of sound wave interference, its operation principle is as shown in Figure 1.
Vent ports flow channel length is shorter, first reaches in exhaust shaft bearing runner, and collateral branch's runner is longer, and exhaust bearing block stream is reached afterwards
Road.When the gas 180 degree phase place of the delayed vent ports runner of the gas of collateral branch's runner, the gas of two-way because
Opposite in phase and cancel out each other, so as to reach the purpose of active attenuation gas.Because sound wave transmission has periodically,
When the gas phase place 180 degree odd-multiple of the delayed vent ports runner of the gas of collateral branch's runner, two-way can be also made
Gas is cancelled out each other because of opposite in phase, so as to reach the purpose of active attenuation gas.
The gas fundamental frequency of helical-lobe compressor can be calculated by formula (1)：
Wherein, f1For the gas fundamental frequency of helical-lobe compressor, m is the helical-lobe compressor male rotor number of teeth, with screw compression
Type line is relevant；N is the rotating speed of helical-lobe compressor.
The gas fundamental frequency of helical-lobe compressor and its frequency multiplication can be calculated by formula (2)：
fN=N*f1, N=1,2,3...... (2)
Collateral branch's runner can be calculated with vent ports flow channel length difference L by formula (3)：
Wherein, L is the length difference of collateral branch's flow channel length and vent ports flow channel length, and Δ t is collateral branch's runner gas
With the time difference of vent ports runner gas.
WhenI.e. collateral branch's runner gas delayed phase vent ports runner gas phase place 180 degree when,
Two-way gas is cancelled out each other because of opposite in phase, can be with active attenuation gas fundamental frequency f1。
When L determines, because sound wave transmission has periodically：
From (3) and (4),
As M=1, f=f1；
As M=2, f=f3；
As M=3, f=f5；
…………
Therefore, not only can active attenuation screw rod after collateral branch's flow channel length and the length difference optimization of vent ports flow channel length
Compressor airflow fundamental ripple frequency, can also eliminate the odd number frequency multiplication of gas fundamental frequency.
In the same manner, whenWhen, active attenuation gas device not only can active attenuation gas 2
Frequency multiplication, can also eliminate the odd number frequency multiplication of the frequency multiplication of gas 2.The two is combined together, can be with effective attenuation screw compression
The gas of machine, reduces the vibration noise of helical-lobe compressor.
The beneficial effects of the utility model are：
The utility model is intended to solve the problems, such as the gas of compressor from source, it is proposed that a kind of active attenuation air-flow
Palsating equipment, based on sound wave interference principle, is made up of vent ports runner and collateral branch's runner two-way runner, by optimizing collateral branch's stream
Road length changes collateral branch's runner gas and vent ports runner gas with the length difference of vent ports flow channel length
Time difference, make the half period that the two time difference is gas to be disappeared, i.e., the two phase difference is 180 degree, makes two runners
Interior gas is cancelled out each other, and reaches the purpose of active attenuation gas.Active attenuation screw compression of the present utility model
Machine gas apparatus structure is simple, manufacture the workable of installation, and effect of vibration and noise reduction is good.
Description of the drawings
Fig. 1 is schematic diagram of the present utility model.
Fig. 2 is three dimensional structure diagram of the present utility model.
Fig. 3 is the profile of Fig. 2 embodiments.
Fig. 4 is the tomograph of helical-lobe compressor gas extraction system described in the utility model.
Fig. 5 is the simulation result of helical-lobe compressor gas extraction system described in the utility model.
Reference is in figure：1 gas decay flange, 2 rotor bearing location holes, 3 gases decay flange spiral shell
Keyhole, 4 vent ports flow channel entry points, 5 vent ports flow channel entry points, 6 collateral branch's flow channel entry points, 7 collateral branch's runner exits, 8 collateral branch stream
Road, 9 vent ports runners, 10 helical-lobe compressor body exhaust flanges, 11 exhaust bearing block flanges, 12 helical-lobe compressor bodies,
13 exhaust bearing blocks.
Specific embodiment
The utility model is further illustrated with reference to the accompanying drawings and detailed description.
The gas phenomenon of helical-lobe compressor exhaust is determined by its operation principle, it is difficult in helical-lobe compressor engagement
During eliminating gas flow pulsation.Therefore, decay gas on the source of helical-lobe compressor exhaust, control gas induction
Helical-lobe compressor noise and vibration problem, be the optimal selection for solving the problems, such as helical-lobe compressor vibration noise, therefore this practicality is new
Active attenuation helical-lobe compressor gas device described in type is directly installed in the vent ports of helical-lobe compressor, maximum limit
The gas of the decay helical-lobe compressor of degree, improves the vibration noise of helical-lobe compressor.
The utility model considers the periodic characteristic of helical-lobe compressor gas comprehensively, takes into full account installation space
Problem, has merged the mentality of designing of active damping noise reduction, based on the general principle of sound wave interference, its operation principle as shown in figure 1,
The gas of two-way opposite in phase is overlapped mutually, the gas of helical-lobe compressor of decaying to greatest extent.
Vent ports flow channel length is shorter, first reaches in exhaust shaft bearing runner, and collateral branch's runner is longer, and exhaust shaft is reached afterwards
Bearing runner.When the gas 180 degree phase place of the delayed vent ports runner of the gas of collateral branch's runner, the air-flow of two-way
Pulsation is cancelled out each other because of opposite in phase, so as to reach the purpose of active attenuation gas.Because sound wave transmits the concrete cycle
Property, so when the gas 180 degree odd-multiple phase place of the delayed vent ports runner of the gas of collateral branch's runner, also can have
The gas for making two-way is cancelled out each other because of opposite in phase, so as to reach the purpose of active attenuation gas, gas
Attenuating is as shown in figure 5, from fig. 5, it can be seen that the active attenuation helical-lobe compressor gas device can be with effective attenuation
The fundamental frequency and its odd number frequency multiplication of gas.
Fig. 2, Fig. 3 and Fig. 4 are referred to, the utility model is related to a kind of active attenuation helical-lobe compressor gas device,
Its one end connecting screw rod compressor block exhaust flange 10, other end connection exhaust bearing block flange 11, arranges helical-lobe compressor
Gas is drained in exhaust bearing block runner through active attenuation helical-lobe compressor gas device.The active attenuation screw rod pressure
The runner of contracting machine gas device 1 is made up of collateral branch's runner 8 and the two parts of vent ports runner 9, makes the row of helical-lobe compressor
A gas part is flowed into from vent ports flow channel entry point 4, is flowed out from vent ports runner exit 5, drains into exhaust bearing block runner
It is interior；The exhaust another part for making helical-lobe compressor is flowed into from collateral branch's flow channel entry point 6, is flowed out from collateral branch's runner exit 7, also drainage row
In gas bearing block.Because there is path length difference in vent ports runner and collateral branch's runner, then certainly exist the time difference, be when the time difference
When half period (i.e. the phase difference difference 180 degree) of air motion frequency of decaying, due to opposite in phase, when being overlapped mutually each other
Offset, mutually decay gas amplitude.For multiple air motion frequencies of decaying, active attenuation helical-lobe compressor gas can be made
Stream palsating equipment is used in series, as shown in Figure 4, it is also possible to open up multiple in active attenuation helical-lobe compressor gas device
Collateral branch's runner.
Operation principle of the present utility model is described with reference to Fig. 1 to Fig. 5：
The exhaust of helical-lobe compressor body drains into exhaust bearing block through active attenuation helical-lobe compressor gas device
In runner.In active attenuation helical-lobe compressor gas device, helical-lobe compressor exhaust be divided into two parts, a part from
Vent ports runner flow is in exhaust bearing block runner；Another part is from collateral branch's runner also drainage exhaust bearing block.Due to
There is path length difference in vent ports runner, then the time difference is certainly existed, when vent ports flow channel length and collateral branch with collateral branch's runner
Path length difference between flow channel length is when half period (i.e. the phase difference difference 180 degree) of air motion frequency of decaying, due to phase
Position when being overlapped mutually conversely, cancel each other out, mutually decay gas amplitude, so as to reduce helical-lobe compressor gas extraction system
And the purpose of pipe-line system vibration noise.
Particular embodiments described above, has carried out entering one to the purpose of this utility model, technical scheme and beneficial effect
Step is described in detail, be should be understood that and be the foregoing is only specific embodiment of the utility model, is not limited to this
Utility model, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvements done etc. all should be wrapped
It is contained within protection domain of the present utility model.
Claims (6)
1. a kind of active attenuation helical-lobe compressor gas device, it is characterised in that the active attenuation helical-lobe compressor gas
Stream palsating equipment includes the air-flow being arranged between helical-lobe compressor body exhaust flange (10) and exhaust bearing block flange (11)
Pulsation decay flange (1), the runner of gas decay flange (1) is by collateral branch's runner (8) and vent ports runner (9) group
Into the gas of collateral branch's runner (8) is produced with the gas of vent ports runner (9) when being vented and converging in bearing block runner
Raw 180 degree phase difference, and then the gas amplitude of active attenuation helical-lobe compressor, reduce the screw compression of gas induction
The vibration noise level of machine gas extraction system and pipe-line system.
2. active attenuation helical-lobe compressor gas device according to claim 1, it is characterised in that the air-flow arteries and veins
The quantity of dynamic decay flange (1) is one or more, and when including multiple gases decay flange (1), each gas declines
Subtraction orchid (1) is arranged in series.
3. active attenuation helical-lobe compressor gas device according to claim 1, it is characterised in that the air-flow arteries and veins
The quantity of collateral branch's runner (8) of dynamic decay flange (1) is one or more.
4. active attenuation helical-lobe compressor gas device according to claim 1, it is characterised in that collateral branch's stream
The length in road (8) is right with the length difference of the length of vent ports runner (9) air motion frequency to be decayed for helical-lobe compressor
Answer the odd-multiple of 1/2 wavelength length.
5. active attenuation helical-lobe compressor gas device as claimed in any of claims 1 to 4, its feature exists
In the quantity of collateral branch's flow channel entry point (6) is one or more, and collateral branch's runner exit (7) quantity is one or more.
6. active attenuation helical-lobe compressor gas device as claimed in any of claims 1 to 4, its feature exists
Grooved, circular or oval is shaped as in, collateral branch's runner (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621187048.9U CN206175222U (en) | 2016-11-04 | 2016-11-04 | Helical -lobe compressor gas device of initiatively attenuateing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621187048.9U CN206175222U (en) | 2016-11-04 | 2016-11-04 | Helical -lobe compressor gas device of initiatively attenuateing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206175222U true CN206175222U (en) | 2017-05-17 |
Family
ID=58681175
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621187048.9U Withdrawn - After Issue CN206175222U (en) | 2016-11-04 | 2016-11-04 | Helical -lobe compressor gas device of initiatively attenuateing |
Country Status (1)
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| CN (1) | CN206175222U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382231A (en) * | 2016-11-04 | 2017-02-08 | 西安交通大学苏州研究院 | Active screw compressor gas pulsation attenuating device |
| TWI719769B (en) * | 2019-09-11 | 2021-02-21 | 中國商復盛實業（上海）有限公司 | Exhaust bearing housing and compressor |
-
2016
- 2016-11-04 CN CN201621187048.9U patent/CN206175222U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106382231A (en) * | 2016-11-04 | 2017-02-08 | 西安交通大学苏州研究院 | Active screw compressor gas pulsation attenuating device |
| CN106382231B (en) * | 2016-11-04 | 2023-10-20 | 西安交通大学苏州研究院 | Active attenuation screw compressor air flow pulsation device |
| TWI719769B (en) * | 2019-09-11 | 2021-02-21 | 中國商復盛實業（上海）有限公司 | Exhaust bearing housing and compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170517 Effective date of abandoning: 20231020 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170517 Effective date of abandoning: 20231020 |