CN204511894U - Exhaust airstream pulsation damping device and screw compressor system thereof - Google Patents
Exhaust airstream pulsation damping device and screw compressor system thereof Download PDFInfo
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- CN204511894U CN204511894U CN201520135715.8U CN201520135715U CN204511894U CN 204511894 U CN204511894 U CN 204511894U CN 201520135715 U CN201520135715 U CN 201520135715U CN 204511894 U CN204511894 U CN 204511894U
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Abstract
A kind of exhaust airstream pulsation damping device and screw compressor system thereof, belong to compressor vibration and noise reducing device technical field.Comprise cylindrical shell, one end of cylindrical shell has air flow inlet, the other end is closed, inside is buffer cavity, and the chamber wall of cylindrical shell sidepiece is also offered flow outlet, and the charge air flow direction of air flow inlet is arranged in mutually vertical with the airflow direction of giving vent to anger of flow outlet.Screw compressor system comprises gas-oil separating cylinder, exhaust minimum pressure valve, helical-lobe compressor, air inlet adjustment valve, permagnetic synchronous motor and exhaust airstream pulsation damping device.Advantage: make air-flow carry out gas amplitude attenuation and the substantially horizontal attenuate low frequency gas amplitude of whole frequency range in the vertical direction when helical-lobe compressor discharges the buffer cavity of airflow passes gas attenuating device, thus exhaust noise and the vibration amplitude of helical-lobe compressor unit can be reduced, there is structure simple, making and installation is convenient, workable, the advantage that effect of vibration and noise reduction is good.
Description
Technical field
The utility model belongs to compressor vibration and noise reducing device technical field, is specifically related to a kind of exhaust airstream pulsation damping device of helical-lobe compressor, and relates to the screw compressor system including this exhaust airstream pulsation damping device.
Background technique
Helical-lobe compressor is a kind of novel rotary type displacement compressor, has that structure is simple, reliability is high and the advantage of a series of uniqueness such as convenient operating maintenance, has been widely used in the industrial field such as refrigeration air-conditioner and aerodynamic force, oil, chemical industry.Helical-lobe compressor by engaging each other for a pair, the rotor of the yin, yang spiral-shaped teeth of contrary rotation direction forms, along with the rotary motion of rotor in body, compressor operating volume constantly changes due to the intrusion of tooth or disengagement, thus the volume between periodic variation rotor often pair of teeth groove, the object of air-breathing, compression and exhaust is reached with this.The operation process of helical-lobe compressor is from breathing process, and then gas is discharged by relief opening after being compressed.
But, helical-lobe compressor does not arrange outlet valve, often there will be gas phenomenon in the course of the work, main manifestations is: in exhaust process, the flow area of exhaust cavity constantly changes, due to different at the gas flow not flowing through vent ports in the same time, thus inevitably produce gas phenomenon; When design conditions and actual conditions inconsistent time, in the moment that active chamber is communicated with exhaust cavity, to there will be etc. and hold compression or swelling, gas flow now also can cause gas phenomenon.
The pulsation of helical-lobe compressor exhaust airstream is the principal element causing vibration & noise, and when the permagnetic synchronous motor frequency conversion drive helical-lobe compressor of compressor assembly, exhaust also exists the phenomenon of gas.Therefore, the necessary gas amplitude taken effective measures when reducing helical-lobe compressor exhaust.
Summary of the invention
Top priority of the present utility model to provide a kind of structure simple, the convenient exhaust airstream pulsation damping device manufacturing and install, it overcomes the problem that the pulsation of existing helical-lobe compressor exhaust airstream causes vibration and noise, when guaranteeing helical-lobe compressor power frequency and variable frequency work, the amplitude of compressor air-discharging gas is all smaller.
Another task of the present utility model to provide a kind of screw compressor system, and it can ensure comprehensive embodiment of technique effect described in exhaust airstream pulsation damping device.
For completing top priority, technological scheme provided by the utility model is: a kind of exhaust airstream pulsation damping device, it comprises a cylindrical shell, one end of described cylindrical shell has the buffer cavity that opening is air flow inlet, the other end is closed, inside is hollow, the chamber wall of described cylindrical shell sidepiece also offers a flow outlet for communicating with buffer cavity, and the charge air flow direction of described air flow inlet is arranged in mutually vertical with the airflow direction of giving vent to anger of described flow outlet.
In a specific embodiment of the present utility model, described gas attenuating device also comprises a pipeline, and described pipeline and described cylindrical shell integral production or split production, this pipeline is connected with the flow outlet on cylindrical shell.
In another specific embodiment of the present utility model, the shape of cross section of described buffer cavity is the one in polygonal, circle or ellipse.
For completing another task, technological scheme provided by the utility model is: a kind of screw compressor system, comprise gas-oil separating cylinder, the exhaust minimum pressure valve be located on gas-oil separating cylinder, helical-lobe compressor, permagnetic synchronous motor and the air inlet adjustment valve that is located on helical-lobe compressor, it is characterized in that: also comprise exhaust airstream pulsation damping device recited above, the air flow inlet of the cylindrical shell of this exhaust airstream pulsation damping device is connected with the relief opening of described helical-lobe compressor by pipeline, pipeline is then connected with described gas-oil separating cylinder by hard tube connector.
The utility model is due to after employing said structure, the beneficial effect had: when helical-lobe compressor discharges the buffer cavity of airflow passes gas attenuating device, air-flow is made to carry out gas amplitude attenuation and the substantially horizontal attenuate low frequency gas amplitude of whole frequency range in the vertical direction, thus exhaust noise and the vibration amplitude of helical-lobe compressor unit can be reduced, there is structure simple, making and installation is convenient, workable, the advantage that effect of vibration and noise reduction is good.
Accompanying drawing explanation
Fig. 1 is the three-dimensional structure diagram of an embodiment of exhaust airstream pulsation damping device described in the utility model.
Fig. 2 is the plan view of Fig. 1 embodiment.
Fig. 3 is the plan view of Fig. 1 embodiment.
Fig. 4 is the plane structure chart of screw compressor system described in the utility model.
In figure: 1. cylindrical shell, 11. buffer cavitys, 12. air flow inlets, 13. flow outlets; 2. pipeline; 3. hard tube connector; 4. gas-oil separating cylinder; 5. be vented minimum pressure valve; 6. air inlet adjustment valve; 7. helical-lobe compressor; 8. permagnetic synchronous motor.
Embodiment
Technical spirit of the present utility model and beneficial effect can be fully understood in order to make the public; claimant will describe in detail embodiment of the present utility model below by reference to the accompanying drawings; but claimant is not the restriction to technological scheme to the description of embodiment, any changing in the form rather than substance according to the utility model design all should be considered as protection domain of the present utility model.
The gas phenomenon of helical-lobe compressor exhaust is determined by its working principle, is difficult in the inner eliminating gas flow pulsation phenomenon of compressor.Therefore, in the pipe vibration that causes of source eliminating gas flow pulsation and the noise problem of helical-lobe compressor exhaust, its effect is best, therefore helical-lobe compressor exhaust airstream pulsation damping device described in the utility model is arranged on the relief opening of helical-lobe compressor.
Refer to Fig. 1, Fig. 2 and Fig. 3, the utility model relates to a kind of exhaust airstream pulsation damping device, it comprises cylindrical shell 1 and pipeline 2, one end of described cylindrical shell 1 has the buffer cavity 11 that opening is air flow inlet 12, the other end is closed, inside is hollow, the chamber wall of described cylindrical shell 1 sidepiece also offers a flow outlet 13 for communicating with buffer cavity 11, and the charge air flow direction of described air flow inlet 12 is arranged in mutually vertical with the airflow direction of giving vent to anger of described flow outlet 13.Described pipeline 2 and described cylindrical shell 1 integral production or split production, this pipeline 2 is connected with the flow outlet 13 on cylindrical shell 1, and the air-flow flowed out from flow outlet 13 leads in compressor assembly by it.The shape of cross section of described buffer cavity 11 is the one in polygonal, circle or ellipse.
Refer to Fig. 4, the utility model also relates to a kind of screw compressor system, comprise gas-oil separating cylinder 4, the exhaust minimum pressure valve 5 be located on gas-oil separating cylinder 4, helical-lobe compressor 7, the air inlet adjustment valve 6 be located on helical-lobe compressor 7, permagnetic synchronous motor 8 and exhaust airstream pulsation damping device, exhaust airstream pulsation damping device comprises described cylindrical shell 1 above and pipeline 2, the air flow inlet 12 of described cylindrical shell 1 is connected by the relief opening of pipeline with described helical-lobe compressor 7, and described pipeline 2 is connected with described gas-oil separating cylinder 4 by hard tube connector 3.
Working principle of the present utility model is described below in conjunction with Fig. 1 to Fig. 4:
The discharge air-flow of helical-lobe compressor 7 enters in buffer cavity 11 by the air flow inlet 12 of exhaust airstream pulsation damping device, shock again through the end that cylindrical shell 1 is closed and change direction, from in flow outlet 13 flowing into pipeline 2 on the chamber wall of cylindrical shell 1 sidepiece, and then enter in the gas-oil separating cylinder 4 of compressor assembly by hard tube connector 3, said process makes the discharge air-flow of helical-lobe compressor carry out gas amplitude attenuation and the substantially horizontal attenuate low frequency gas amplitude of whole frequency range in the vertical direction, thus exhaust noise and the vibration amplitude of helical-lobe compressor unit can be reduced.
Claims (4)
1.
a kind of exhaust airstream pulsation damping device, it is characterized in that comprising a cylindrical shell (1), one end of described cylindrical shell (1) has the buffer cavity (11) that opening is air flow inlet (12), the other end is closed, inside is hollow, the chamber wall of described cylindrical shell (1) sidepiece also offers a flow outlet (13) for communicating with buffer cavity (11), and the charge air flow direction of described air flow inlet (12) is arranged in mutually vertical with the airflow direction of giving vent to anger of described flow outlet (13).
2.
exhaust airstream pulsation damping device according to claim 1, it is characterized in that described gas attenuating device also comprises a pipeline (2), described pipeline (2) and described cylindrical shell (1) integral production or split production, this pipeline (2) is connected with the flow outlet (13) on cylindrical shell (1).
3.
exhaust airstream pulsation damping device according to claim 1, is characterized in that the shape of cross section of described buffer cavity (11) is the one in polygonal, circle or ellipse.
4.
a kind of screw compressor system, comprise gas-oil separating cylinder (4), be located at the exhaust minimum pressure valve (5) on gas-oil separating cylinder (4), helical-lobe compressor (7), permagnetic synchronous motor (8) and the air inlet adjustment valve (6) be located on helical-lobe compressor (7), it is characterized in that: also comprise the exhaust airstream pulsation damping device above in 1 to 3 described in arbitrary claim, the air flow inlet (12) of the cylindrical shell (1) of this exhaust airstream pulsation damping device is connected by the relief opening of pipeline with described helical-lobe compressor (7), pipeline (2) is then connected with described gas-oil separating cylinder (4) by hard tube connector (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520135715.8U CN204511894U (en) | 2015-03-10 | 2015-03-10 | Exhaust airstream pulsation damping device and screw compressor system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520135715.8U CN204511894U (en) | 2015-03-10 | 2015-03-10 | Exhaust airstream pulsation damping device and screw compressor system thereof |
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| CN204511894U true CN204511894U (en) | 2015-07-29 |
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| CN201520135715.8U Active CN204511894U (en) | 2015-03-10 | 2015-03-10 | Exhaust airstream pulsation damping device and screw compressor system thereof |
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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 |
| CN106401965A (en) * | 2016-06-24 | 2017-02-15 | 珠海格力电器股份有限公司 | Exhaust bearing seat and screw compressor |
| CN106640664A (en) * | 2017-01-13 | 2017-05-10 | 上海振世能源科技有限公司 | Screw air compressor loading and unloading solenoid valve group connecting device |
-
2015
- 2015-03-10 CN CN201520135715.8U patent/CN204511894U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401965A (en) * | 2016-06-24 | 2017-02-15 | 珠海格力电器股份有限公司 | Exhaust bearing seat and screw compressor |
| 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 |
| CN106640664A (en) * | 2017-01-13 | 2017-05-10 | 上海振世能源科技有限公司 | Screw air compressor loading and unloading solenoid valve group connecting device |
| CN106640664B (en) * | 2017-01-13 | 2019-10-29 | 上海振世能源科技有限公司 | Screw-rod air compressor adds unloading solenoid valve block attachment device |
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