CN112758121A - There is not oily wind regime device and vehicle - Google Patents
There is not oily wind regime device and vehicle Download PDFInfo
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- CN112758121A CN112758121A CN202110069051.XA CN202110069051A CN112758121A CN 112758121 A CN112758121 A CN 112758121A CN 202110069051 A CN202110069051 A CN 202110069051A CN 112758121 A CN112758121 A CN 112758121A
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- air compressor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D27/00—Heating, cooling, ventilating, or air-conditioning
- B61D27/0018—Air-conditioning means, i.e. combining at least two of the following ways of treating or supplying air, namely heating, cooling or ventilating
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Abstract
The invention relates to the technical field of air supply, and provides an oil-free air source device and a vehicle, wherein the oil-free air source device comprises: the air inlet end of the oil-free vortex air compressor is connected with a first filter; the cooling mechanism is connected with the air outlet end of the oil-free vortex air compressor; the gas-liquid separator is connected with the cooling mechanism; the dryer is connected with the gas-liquid separator; a second filter connected to the dryer. The invention avoids the fault of lubricating oil emulsification in the oil compressor, and has the characteristics of cleanness, no oil, low vibration and low noise, and high reliability.
Description
Technical Field
The invention relates to the technical field of air supply, in particular to an oil-free air source device and a vehicle.
Background
The wind source device of urban rail vehicle is an important device for providing clean and dry compressed air for vehicle air brake system and auxiliary wind equipment, and mainly comprises an air compressor, an air dryer and other accessories. At present, the wind source device for the urban rail transit vehicles at home and abroad mainly adopts an oil piston type or a screw type, lubricating oil needs to be filled and replaced periodically, and if the operation is improper or a unit leaks oil, the environment is greatly polluted; meanwhile, due to frequent start and stop of the unit, severe environment and other reasons, the fault of emulsification after mixing and stirring lubricating oil and condensed water often occurs, which brings great inconvenience to users; some oil-free air source devices in the form of oil-free pistons are widely applied to small auxiliary air source systems such as auxiliary pantograph devices of metro vehicles, but are limited by the defects of large noise and vibration, and the reasons that the reliability and the service life are still to be improved, and the like, and are not always applied to main air source systems.
Disclosure of Invention
The invention provides an oil-free wind source device and a vehicle, avoids the fault of lubricating oil emulsification of an oil compressor, has the characteristics of cleanness, no oil, low vibration and low noise, and has high reliability.
The invention provides an oil-free wind source device, comprising: the air inlet end of the oil-free vortex air compressor is connected with a first filter; the cooling mechanism is connected with the air outlet end of the oil-free vortex air compressor; the gas-liquid separator is connected with the cooling mechanism; the dryer is connected with the gas-liquid separator; a second filter connected to the dryer.
According to the oil-free air source device provided by the invention, the cooling mechanism comprises a cooler, an air channel, a cooling fan and a driving device, the cooler is respectively connected with the air outlet end of the oil-free vortex air compressor and the gas-liquid separator, two ends of the air channel are respectively connected with the oil-free vortex air compressor and the cooler, the cooling fan is arranged on the air channel, and the driving device is connected with the cooling fan.
According to the oil-free air source device provided by the invention, the air outlet end of the oil-free vortex air compressor is provided with the temperature detector, and the temperature detector is used for controlling the cooling air volume of the cooling fan based on the temperature of the air outlet end of the oil-free vortex air compressor.
According to the oil-free wind source device provided by the invention, the cooler is connected with the gas-liquid separator through the shockproof hose.
The oil-free air source device further comprises an external air source interface which is used for being connected with an external air source, the external air source and the cooler are connected with the gas-liquid separator in parallel through a three-way valve, a one-way valve is arranged between the shockproof hose and the three-way valve, and an air inlet valve is arranged between the external air source and the three-way valve.
According to the oil-free air source device provided by the invention, the air outlet of the second filter is connected with a test pipeline, and a pressure switch is arranged in the test pipeline and used for controlling the oil-free vortex air compressor based on the pressure of the air outlet of the second filter.
According to the oil-free wind source device provided by the invention, the third filter is arranged between the gas-liquid separator and the dryer.
According to the oil-free wind source device provided by the invention, the gas-liquid separator and the third filter are provided with a sewage discharge electromagnetic valve.
According to the oil-free wind source device provided by the invention, the oil-free vortex air compressor and the cooling mechanism are arranged on the hanger through the shock absorber, and the hanger is also provided with the control box.
The invention also provides a vehicle which comprises a vehicle control system and the oil-free wind source device, wherein the vehicle control system is connected with the control box and used for controlling the power supply of the control box based on the temperature of the air outlet end of the oil-free vortex air compressor, so that the start and stop of the oil-free vortex air compressor and the cooling mechanism are controlled.
The oil-free wind source device and the vehicle provided by the invention have the advantages of small vibration, low noise, low energy consumption, high volumetric efficiency and the like by adopting the oil-free vortex air compressor, the vibration and the noise of equipment are fundamentally reduced, meanwhile, the whole device adopts an oil-free design, no lubricating oil exists in the links from air suction to air outlet, the fault of lubricating oil emulsification of the oil compressor is avoided, the reliability of the whole device is improved, and the quality grade of air supplied by the whole device is improved by the treatment of multi-stage filtration, cooling, gas-liquid separation, drying and the like.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an oil-free wind source device provided by the invention;
FIG. 2 is a rear view of FIG. 1;
FIG. 3 is a schematic diagram of the piping structure of the external air source interface provided by the present invention;
FIG. 4 is a control block diagram of the oil-free wind source device provided by the present invention;
reference numerals:
1: a first filter; 2: an oil-free scroll air compressor; 3: an air duct;
4: a cooling fan; 5: a cooler; 6: a shock-proof hose;
7: a one-way valve; 8: an intake valve; 9: a quick coupling;
10: a three-way valve; 11: a gas-liquid separator; 12: a third filter;
13: a dryer; 14: a second filter; 15: a pressure switch;
16: a pressure test point; 17: a control box; 18: an air outlet of the second filter;
19: a hanger; 20: and an air inlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In embodiments of the invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The oil-free wind source apparatus and the vehicle of the present invention will be described with reference to fig. 1 to 4.
According to the embodiment of the present invention, as shown in fig. 1 and 2, the oil-free wind source device of the present invention mainly comprises: the oil-free scroll air compressor comprises an oil-free scroll air compressor 2, a first filter 1, a cooling mechanism, a gas-liquid separator 11, a dryer 13 and a second filter 14. The first filter 1 is connected with the air inlet end of the oil-free scroll air compressor 2 and is used for filtering air and introducing the filtered air into the oil-free scroll air compressor 2 for compression; the cooling mechanism is connected with the air outlet end of the oil-free vortex air compressor 2 and is used for cooling the compressed air; the gas-liquid separator 11 is connected with the cooling mechanism and is used for separating liquid water in the cooled compressed air; the dryer 13 is connected with the gas-liquid separator 11 and is used for further drying the separated compressed air to remove water; the second filter 14 is connected to the dryer 13, and since the compressed air is easy to mix with dust after being dried, the dust in the compressed air can be removed by the second filter 14 and then sent to the air outlet 18 of the second filter, so as to provide stable and pure compressed air for downstream equipment and pipelines.
According to the embodiment of the invention, the oil-free vortex air compressor is adopted, so that the fault of lubricating oil emulsification of the oil compressor is avoided, the oil-free vortex air compressor has the advantages of small vibration, low noise, low energy consumption, high volumetric efficiency and the like, the reliability of the whole device is improved, and the quality grade of air supplied by the whole device is improved through two-stage filtration, cooling, gas-liquid separation, drying and the like.
As shown in fig. 1, a third filter 12 is further disposed between the gas-liquid separator 11 and the dryer 13, and is used for further filtering impurities in the compressed air after gas-liquid separation, so as to improve the purification effect.
The specific type of the filter of the present invention is not particularly limited as long as it can respectively perform the corresponding functions described above, and for example, the first filter 1 may be an air filter, the second filter 14 may be a dust removal filter, and the third filter 12 may be a precision filter.
Preferably, the gas-liquid separator 11 and the third filter 12 are respectively provided with a blowdown electromagnetic valve, so that water, impurities and the like in the cavity are periodically removed, the filtering efficiency is maintained, automatic control is realized, and manual operation is not needed.
In addition, the gas-liquid separator 11 and the third filter 12 are integrally assembled by flange shorting, as shown in fig. 2 and 3, and the cooler 5 is connected to the gas-liquid separator 11 by the vibration-proof hose 6, thereby preventing vibration from being transmitted to the gas-liquid separator 11 and the third filter 12, which affects separation and filtering performance.
As shown in fig. 3, an assembly line structure of an external air source port is shown, an external air source (not shown) is connected to a first air inlet end of a three-way valve 10 through a quick coupling 9, specifically, the external air source port can be understood as a port of the quick coupling 9, a cooler 5 is connected to a second air inlet end of the three-way valve 10 through a shockproof hose 6, and an air outlet end of the three-way valve 10 is connected to a gas-liquid separator 11, so that compressed air generated from the oil-free scroll air compressor 2 and the external air source are connected in parallel to enter the gas-liquid separator 11 through the three-way valve 10. Meanwhile, in order to prevent air from an external air source from flowing to the cooler 5, a one-way valve 7 is arranged between the shockproof hose 6 and the three-way valve 10, and an air inlet valve 8 is arranged between the three-way valve 10 and the quick connector 9, so that an air path is communicated when the external air source needs to be accessed.
According to the embodiment of the invention, the external air source can be connected under the condition that the compressor cannot be started, and pure compressed air can still be output after the external air source is subjected to gas-liquid separation, primary filtration, drying and secondary filtration.
Because more and more air source systems adopt the coaxial design of a cooling fan and a compressor, namely, one motor is adopted to drive the cooling fan and the compressor at the same time, but the oil-free compressor has higher cooling requirement on the cooling system because of no cooling of lubricating oil, and the set cooling air volume is higher in consideration of high-temperature environment. Because the rotating speed of the cooling fan can not be adjusted, the cooling air volume is still kept unchanged in a low-temperature environment, and the energy consumption is increased.
Therefore, in order to solve the technical problems, the cooling mechanism adopts an independently controlled cooling system, the oil-free scroll air compressor and the cooling fan are respectively provided with corresponding driving devices for driving, and the air volume of the cooling fan can be independently adjusted.
As shown in fig. 2, the cooling mechanism includes a cooler 5, an air duct 3, a cooling fan 4 and a driving device, the cooler 5 is respectively connected to the air outlet end of the oil-free scroll air compressor 2 and the gas-liquid separator 11, and the two ends of the air duct 3 are respectively connected to the oil-free scroll air compressor 2 and the cooler 5, specifically: the two ends of the air duct 3 are respectively covered on the machine head of the oil-free scroll air compressor 2 and the cooler 5, the air duct 3 positioned at the machine head of the oil-free scroll air compressor 2 is provided with an air inlet 20, and the cooler 5 is provided with an air outlet formed by fins to form a circulating air duct; the cooling fan 4 is fixed on the air duct 3, the driving device is connected with the cooling fan 4, the cooling fan 4 sucks air through the two air inlets 20, and the surfaces of the oil-free scroll air compressor 2 and the cooler 5 are swept, and then heat is discharged through the air outlet.
In this embodiment of the present invention, the driving device is preferably a variable frequency motor, which facilitates to adjust the rotation speed of the cooling fan, thereby changing the cooling air volume.
As a further improvement, the outlet end of the oil-free scroll air compressor 2 is provided with a temperature detector for detecting the outlet temperature of the oil-free scroll air compressor 2 in real time, and the specific type of the temperature detector is not particularly limited, and may be, for example, a temperature detector, a temperature sensor, and the like, and the temperature sensor is preferred in this embodiment of the present invention. The cooling air quantity can be automatically adjusted according to the air outlet temperature of the oil-free vortex air compressor 2, so that the cooling efficiency is improved, and the cooling energy consumption is reduced.
In some specific examples, when the air outlet temperature of the oil-free scroll air compressor 2 is in a high-temperature state, the rotating speed of the cooling fan 4 is increased to increase the cooling air volume, and correspondingly, when the air outlet temperature is in a low-temperature state, the cooling air volume is reduced, so that the problem that the cooling air volume of a common cooling system is high when the temperature is lower and the high temperature is kept is solved, and the overall energy consumption is reduced. Therefore, the invention can automatically adjust the cooling air quantity according to the cooling requirements of the oil-free air source device in different environments, and has the advantages of energy saving and environmental protection while ensuring sufficient cooling.
As shown in fig. 2, the air outlet of the second filter 14 is connected with a testing pipeline, a pressure switch 15 is arranged in the testing pipeline, and pressure detection is performed on a pressure testing point 16 in the testing pipeline, so that the air outlet pressure of the second filter is used for controlling the start and stop of the oil-free vortex air compressor 2, and the method specifically comprises the following steps: when the pipeline pressure at the air outlet 18 of the second filter is lower than a set value a, controlling the oil-free scroll air compressor 2 to start; and when the pipeline pressure at the air outlet 18 of the second filter is higher than a set value b, controlling the oil-free scroll air compressor 2 to stop working.
As shown in fig. 1 and 2, the oil-free wind source device of the present invention is provided with a hanger 19, a control box 17 is further provided on the hanger 19 for controlling the operation of the whole device, and all the above components are integrally mounted on the hanger 19 to be a separate wind source device and then integrally mounted on the vehicle.
The hanger 19 is of a welded integrated structure, and the oil-free vortex air compressor 2 and the cooling mechanism are both mounted on the hanger 19 through elastic shock absorbers, so that the vibration of moving parts to the vehicle is reduced; other components such as the dryer 13 and the control box 17 are directly fixed to the hanger 19 by bolts.
The specific type of the elastic damper is not particularly limited, and may be, for example, a wire rope damper, a rubber damper, or the like.
As shown in fig. 2, the control box 17, the dryer 13, the pressure switch 15, the pressure test point 16 and other components requiring maintenance test are integrated on the left half side of the air duct 3, which facilitates maintenance in the operation process.
As shown in fig. 4, the present invention further provides a vehicle, which comprises a vehicle control system and the above-mentioned device without an air source, wherein the vehicle control system is connected with the control box.
The control box mainly comprises electrical components such as a PLC control unit, a three-phase alternating current contactor, a relay control unit, a frequency converter, a power supply and the like. Wherein, the PLC control unit links to each other with vehicle control system and thermodetector respectively, and three-phase ac contactor links to each other with PLC control unit and oil-free vortex air compressor respectively, and the relay control unit links to each other with three-phase ac contactor, pressure switch and blowdown solenoid valve respectively, and the converter links to each other with PLC control unit and inverter motor respectively, and inverter motor and cooling blower link to each other.
Can be according to the end temperature adjustment cooling air volume of giving vent to anger of no oily vortex air compressor through thermodetector and converter, it is specific: the temperature detector transmits the temperature of compressed air at the air outlet end to the PLC control unit in real time, the PLC control unit transmits a rotating speed signal of the cooling fan to the frequency converter after processing the temperature and the required cooling air quantity, and the frequency converter controls the rotating speed of the variable frequency motor and further controls the rotating speed of the cooling fan, so that the cooling air quantity of the cooling fan is adjusted.
The PLC control unit can also collect and analyze the temperature signal transmitted by the temperature detector, when the temperature is higher than a certain limited temperature and is not reduced below the limited temperature in a short time, the PLC control unit sends a high-temperature alarm signal of the compressor to the vehicle control system, the vehicle control system cuts off the power supply of the control box according to the high-temperature alarm signal, namely, the power supply of the whole oil-free air source device is cut off, and the oil-free scroll air compressor and the cooling mechanism are controlled to stop working, so that the oil-free scroll air compressor is protected.
Through control pressure switch, action such as the start-up of steerable three-phase ac contactor, the independent completion does not have oily vortex air compressor, stops, satisfies vehicle total wind pressure and uses wind demand, specifically includes: when the pressure of the test pipeline is lower than a set value a, the pressure switch transmits a switching value signal to the relay control unit, and the relay control unit controls the oil-free scroll air compressor to start by controlling the three-phase alternating current contactor to be closed; when the pressure of the test pipeline is higher than a set value b, the pressure switch transmits a switching value signal to the relay control unit, and the relay control unit controls the oil-free scroll air compressor to stop working by controlling the three-phase alternating current contactor to be switched off. The embodiment of the invention ensures that the pressure of the air outlet of the second filter is in a stable set value range, and can provide stable and pure compressed air for downstream equipment.
The relay control unit can also control the sewage discharge electromagnetic valve to independently complete the timing sewage discharge function of the sewage discharge electromagnetic valve.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An oil-free wind source device, comprising:
the air inlet end of the oil-free vortex air compressor is connected with a first filter;
the cooling mechanism is connected with the air outlet end of the oil-free vortex air compressor;
the gas-liquid separator is connected with the cooling mechanism;
the dryer is connected with the gas-liquid separator;
a second filter connected to the dryer.
2. An oil-free wind source device according to claim 1, wherein the cooling mechanism comprises a cooler, a wind channel, a cooling fan and a driving device, the cooler is respectively connected with the air outlet end of the oil-free vortex air compressor and the gas-liquid separator, two ends of the wind channel are respectively connected with the oil-free vortex air compressor and the cooler, the cooling fan is arranged on the wind channel, and the driving device is connected with the cooling fan.
3. An oil-free wind source device according to claim 2, wherein the air outlet end of the oil-free scroll air compressor is provided with a temperature detector for controlling the cooling wind volume of the cooling fan based on the temperature of the air outlet end of the oil-free scroll air compressor.
4. An oil-free wind source apparatus as claimed in claim 2, wherein the cooler is connected to the gas-liquid separator by a shock-proof hose.
5. An oil-free wind source device as claimed in claim 4, further comprising an external air source interface for connecting an external air source, wherein the external air source and the cooler are connected in parallel with the gas-liquid separator through a three-way valve, a one-way valve is arranged between the anti-vibration hose and the three-way valve, and an air inlet valve is arranged between the external air source and the three-way valve.
6. An oil-free wind source device according to claim 1, wherein the air outlet of the second filter is connected with a test pipeline, and a pressure switch is arranged in the test pipeline and used for controlling the oil-free scroll air compressor based on the pressure of the air outlet of the second filter.
7. An oil-free wind source device according to claim 1, wherein a third filter is provided between the gas-liquid separator and the dryer.
8. An oil-free wind source apparatus as claimed in claim 7, wherein the gas-liquid separator and the third filter are provided with a blowdown solenoid valve.
9. An oil-free wind source apparatus as claimed in any one of claims 1 to 8, wherein the oil-free scroll air compressor and the cooling mechanism are mounted via a damper to a pylon on which a control box is also provided.
10. A vehicle, characterized by comprising a vehicle control system and the oil-free wind source device of claim 9, wherein the vehicle control system is connected with the control box and used for controlling the power supply of the control box based on the temperature of the air outlet end of the oil-free scroll air compressor, so as to control the start and stop of the oil-free scroll air compressor and the cooling mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110069051.XA CN112758121A (en) | 2021-01-19 | 2021-01-19 | There is not oily wind regime device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110069051.XA CN112758121A (en) | 2021-01-19 | 2021-01-19 | There is not oily wind regime device and vehicle |
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| CN112758121A true CN112758121A (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110069051.XA Pending CN112758121A (en) | 2021-01-19 | 2021-01-19 | There is not oily wind regime device and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116292298A (en) * | 2023-05-11 | 2023-06-23 | 福建省泉州市力达机械有限公司 | Low-noise energy-saving oil-free screw blower |
-
2021
- 2021-01-19 CN CN202110069051.XA patent/CN112758121A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116292298A (en) * | 2023-05-11 | 2023-06-23 | 福建省泉州市力达机械有限公司 | Low-noise energy-saving oil-free screw blower |
| CN116292298B (en) * | 2023-05-11 | 2023-08-15 | 福建省泉州市力达机械有限公司 | Low-noise energy-saving oil-free screw blower |
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