CN113090498A - Oil-free piston type wind source device for urban rail vehicle - Google Patents
Oil-free piston type wind source device for urban rail vehicle Download PDFInfo
- Publication number
- CN113090498A CN113090498A CN202110305358.5A CN202110305358A CN113090498A CN 113090498 A CN113090498 A CN 113090498A CN 202110305358 A CN202110305358 A CN 202110305358A CN 113090498 A CN113090498 A CN 113090498A
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- oil
- air
- free piston
- piston type
- compressor
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims description 11
- 238000013016 damping Methods 0.000 claims description 6
- 229910000838 Al alloy Inorganic materials 0.000 claims description 5
- 230000030279 gene silencing Effects 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims 1
- 230000008929 regeneration Effects 0.000 claims 1
- 238000011069 regeneration method Methods 0.000 claims 1
- 239000010687 lubricating oil Substances 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 8
- 239000003921 oil Substances 0.000 abstract description 5
- 238000004945 emulsification Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 1
- 239000006096 absorbing agent Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/066—Cooling by ventilation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/005—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders with two cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B27/0404—Details, component parts specially adapted for such pumps
- F04B27/0423—Cylinders
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0044—Pulsation and noise damping means with vibration damping supports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/0027—Pulsation and noise damping means
- F04B39/0083—Pulsation and noise damping means using blow off silencers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/02—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/122—Cylinder block
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/16—Filtration; Moisture separation
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention discloses an oil-free piston type air source device for an urban rail vehicle, which comprises an air source frame, a motor, an oil-free piston type air compressor, a cooler, a double-tower type dryer, a steam-water separator, an air filter, a precision filter and a buffer tank, wherein the motor, the oil-free piston type air compressor, the cooler, the double-tower type dryer, the steam-water separator, the air filter and the precision filter are fixedly arranged in the air source frame; and a compressed air outlet of the oil-free piston type air compressor is sequentially connected with the cooler, the double-tower dryer and the precision filter. The invention adopts the design of a modularized centralized structure, so that the volume of the oil-free piston type wind source device is more compact; meanwhile, the invention saves the consumption of lubricating oil and filter material in the use and maintenance of the wind source device, reduces the maintenance cost of the unit, and overcomes the defects of the lubricating oil emulsification of the oil compressor, the large noise, the heavy weight and the high maintenance cost of the unit of the wind source device in the prior art.
Description
Technical Field
The invention relates to an oil-free piston type wind source device for an urban rail vehicle, and belongs to the technical field of vehicle wind source equipment.
Background
The wind source device is a compressed air generating unit specially designed for railway vehicles, and is mainly used for providing compressed air for an air spring system.
The air source device in the prior art generally adopts an oil injection screw type air compressor, a tiny oil sliding vane type air compressor or an oil piston type air compressor, has serious lubricating oil emulsification problem, serious environmental pollution, high noise, heavy weight and large volume, and can not meet the requirements of urban rail vehicles.
Disclosure of Invention
The invention aims to solve the technical problems that an oil-free piston type air source device for an urban rail vehicle is provided, and the technical problems that lubricating oil of an oil compressor of the air source device in the prior art is emulsified, a unit is high in noise, heavy in weight, high in maintenance cost and the like are solved.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
an oil-free piston type air source device for an urban rail vehicle comprises an air source frame, a motor, an oil-free piston type air compressor, a cooler, a double-tower dryer, a steam-water separator, an air filter, a precision filter and a buffer box, wherein the motor, the oil-free piston type air compressor, the cooler, the double-tower dryer, the steam-water separator, the air filter and the precision filter are fixedly arranged in the air source frame;
and a compressed air outlet of the oil-free piston type air compressor is sequentially connected with the cooler, the double-tower dryer and the precision filter.
As a further improvement of the invention, the oil-free piston type air compressor comprises a compressor main machine and cooling fans, wherein the cooling fans are positioned on two sides of the compressor main machine and used for reducing the temperature of a cylinder body of the compressor main machine.
As a further improvement of the invention, the motor is connected with the compressor main body to provide the driving force of the compressor main body.
As a further development of the invention, the coolers are air coolers, which are located on both sides of the cooling fan.
As a further improvement of the invention, the compressor main engine is fixedly connected to the wind source frame through the main engine hanging bracket and the damping device and is positioned below the wind source frame.
As a further improvement of the invention, the damping device adopts four rubber vibration isolators which are respectively and fixedly arranged at four angular points at the top of the wind source frame, and four corners of the host machine hanging bracket are respectively arranged at four angular points of the wind source frame with the rubber vibration isolators.
As a further improvement of the invention, the wind power generation device further comprises an electric control box which is fixedly arranged on the wind source frame and positioned on the front side of the buffer box;
the electric cabinet is connected with the motor through a cable so as to control and supply power to the motor.
As a further improvement of the invention, an air outlet of the air filter is connected with an air inlet of the compressor main machine and used for providing clean air for the compressor main machine, an air inlet silencing pipe is installed at an air inlet of the air filter, and the air filter is fixedly arranged at two sides of the electric cabinet.
As a further improvement of the invention, the twin-tower dryer is a twin-tower type heatless regenerative dryer, and the pressure dew point is more stable and reliable.
As a further improvement of the invention, the motor shell of the motor, the cylinder barrel of the oil-free piston type compressor, the electric control box, the buffer box and the air cooler are all made of aluminum alloy.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
the invention is suitable for urban rail vehicles,
the problem of lubricating oil emulsification is solved by adopting an oil-free piston type air compressor without lubricating oil;
the sound absorption material is arranged in the box body structure, so that the noise of the oil-free piston type wind source device is reduced to the sound pressure level below 70dB (A) at the position of 1 m;
the cylinder barrel, the motor shell and the box body of the main machine of the compressor are made of aluminum alloy, so that the oil-free piston type wind source device is lighter in weight;
the volume of the oil-free piston type wind source device is more compact by adopting a modularized centralized structural design;
meanwhile, the invention saves the consumption of lubricating oil and filter material in the use and maintenance of the wind source device and reduces the maintenance cost of the unit.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of an axial structure of the present invention;
FIG. 2 is a schematic view of another axial structure according to the present invention;
FIG. 3 is a schematic sectional view of an oil-free piston type compressor according to the present invention;
fig. 4 is a schematic view of a half-sectional structure of an oil-free piston compressor of the present invention.
Wherein:
1 air source frame, 2 host computer gallows, 3 rubber shock absorbers, 4 electric cabinets, 5 air cleaner, 6 hush pipe that admits air, 7 oil-free piston air compressor machines, 8 cooling fan, 9 catch water, 10 twin-tower desicators, 11 motors, 12 precision filter, 13 air cooler, 14 baffle-boxes.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. 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 application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
As shown in the figures 1-4 of the drawings,
the urban rail vehicle of this embodiment is with no oily piston wind regime device includes: the air source device comprises an air source frame 1, a main machine hanger 2, a rubber shock absorber 3, an electric cabinet 4, an air filter 5, an air inlet silencing pipe 6, an oil-free piston type air compressor 7, a cooling fan 8, an air-water separator 9, a double-tower dryer 10, a motor 11, a precision filter 12, an air cooler 13 and a buffer tank 14;
the oil-free piston type compressor 7 can be a two-stage oil-free piston type compressor with the patent number of CN110219793A, and mainly comprises a cylinder body, an air inlet valve, a piston, a connecting rod, a crankshaft and a gas-water separator;
the two cooling fans 8 are arranged on two sides of the oil-free piston type compressor 7 and used for reducing the temperature of a main engine cylinder of the compressor and the temperature of the air cooler 14;
specifically, the motor 11 is connected to the compressor main body to provide a driving force for the compressor main body.
In particular, the coolers are air coolers 13, which are located on both sides of the cooling fan 8.
Specifically, the compressor main unit is fixedly connected to the air source frame through the main unit hanger 2 and the damping device, and is located below the air source frame 1.
Furthermore, the damping device adopts four rubber vibration isolators 3 which are respectively and fixedly installed at four corner points at the top of the wind source frame 1, and four corners of the host hanger 2 are respectively installed at four corner points of the wind source frame 1 with the rubber vibration isolators 3.
Further, the wind power generation device also comprises an electric cabinet 4, wherein the electric cabinet 4 is fixedly arranged on the wind source frame 1 and is positioned on the front side of the buffer box 14;
the electric cabinet 6 is connected with the motor 11 through a cable so as to control and supply power to the motor 11.
Further, an air outlet of the air filter 5 is connected with an air inlet of the compressor main unit and used for providing clean air for the compressor main unit, an air inlet silencing pipe 6 is installed at an air inlet of the air filter 5, and the air filter 7 is fixedly arranged on two sides of the electric cabinet 4.
Further, the twin-tower dryer 10 is a twin-tower type heatless regenerative dryer, and the pressure dew point is more stable and reliable.
Further, the motor housing of the motor 11, the cylinder of the oil-free piston compressor 7, the electric cabinet 4, the buffer tank 14 and the air cooler 13 are all made of aluminum alloy.
The specific working process of the embodiment is as follows: after being filtered and cleaned by the air filter 5, air to be compressed is sucked into a compression cavity of a compressor main machine by an air inlet regulating valve of the oil-free piston type air compressor 7 to be subjected to secondary compression through mutual movement of a crankshaft, a connecting rod and a piston to obtain compressed air, the compressed air enters the air cooler 14 through an air outlet of the compressor main machine to be subjected to forced air cooling, is subjected to steam-water separation by the steam-water separator 13, is dried by the double-tower type dryer 11, and is finally filtered and purified by the precision filter 12, so that the compressed air is used for a braking system and an air spring system of the urban rail vehicle.
The oil-free piston type air compressor is adopted without lubricating oil, so that the problem of lubricating oil emulsification is solved;
the noise of the oil-free piston type wind source device is reduced to below 70dB (A) of sound pressure level at 1m by adopting the air inlet silencing pipe;
the cylinder barrel, the motor shell and the box body of the main engine of the compressor are made of aluminum alloy, so that the oil-free piston type wind source device is lighter in weight.
The modularized centralized structural design is adopted, so that the volume of the oil-free piston type wind source device is more compact.
Meanwhile, the invention saves the consumption of lubricating oil and filter material in the use and maintenance of the wind source device and reduces the maintenance cost of the unit.
Claims (10)
1. The utility model provides an urban rail vehicle is with no oily piston wind regime device which characterized in that: the air source drying system comprises an air source frame (1), a motor (11), an oil-free piston type air compressor (7), a cooler, a double-tower type dryer (10), a steam-water separator (9), an air filter (5), a precision filter (12) and a buffer box (14), wherein the motor (11), the oil-free piston type air compressor, the cooler, the double-tower type dryer, the air-water separator (9), the air filter (5) and the precision filter (12) are fixedly arranged in the air source frame (1), and the buffer;
and a compressed air outlet of the oil-free piston type air compressor (7) is sequentially connected with the cooler, the double-tower dryer (10) and the precision filter (12).
2. An oil-free piston type wind source device for an urban rail vehicle according to claim 1, characterized in that: oil-free piston air compressor machine (7) are including compressor host computer and cooling fan (8), cooling fan (8) are located the both sides of compressor host computer for reduce the temperature of compressor host computer cylinder body.
3. An oil-free piston type wind source device for an urban rail vehicle according to claim 2, characterized in that: the motor (11) is connected with the compressor main machine to provide driving force for the compressor main machine.
4. An oil-free piston type wind source device for an urban rail vehicle according to claim 2, characterized in that: the coolers are air coolers (13) which are located on both sides of the cooling fan (8).
5. An oil-free piston type wind source device for an urban rail vehicle according to claim 2, characterized in that: the compressor main unit is fixedly connected to the air source frame through the main unit hanger (2) and the damping device and is located below the air source frame (1).
6. An oil-free piston type wind source device for an urban rail vehicle according to claim 5, characterized in that: the damping device adopts four rubber vibration isolators (3), and is respectively and fixedly installed at four angular points at the top of the wind source frame (1), and four corners of the host hanger (2) are respectively installed at four angular points of the wind source frame (1) with the rubber vibration isolators (3).
7. An oil-free piston type wind source device for an urban rail vehicle according to claim 4, characterized in that: the wind source structure is characterized by further comprising an electric cabinet (4), wherein the electric cabinet (4) is fixedly arranged on the wind source frame (1) and is positioned on the front side of the buffer box (14);
the electric control box (6) is connected with the motor (11) through a cable so as to control and supply power to the motor (11).
8. An oil-free piston type wind source device for an urban rail vehicle according to claim 2, characterized in that: the air outlet of the air filter (5) is connected with the air inlet of the compressor host machine and used for providing clean air for the compressor host machine, the air inlet of the air filter (5) is provided with an air inlet silencing pipe (6), and the air filter (7) is fixedly arranged on two sides of the electric cabinet (4).
9. An oil-free piston type wind source device for an urban rail vehicle according to claim 2, characterized in that: the twin-tower dryer (10) is a twin-tower type heatless regeneration dryer, and the pressure dew point is more stable and reliable.
10. An oil-free piston type wind source device for an urban rail vehicle according to claim 7, characterized in that: the motor shell of the motor (11), the cylinder barrel of the oil-free piston type compressor (7), the electric cabinet (4), the buffer tank (14) and the air cooler (13) are all made of aluminum alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305358.5A CN113090498A (en) | 2021-03-23 | 2021-03-23 | Oil-free piston type wind source device for urban rail vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110305358.5A CN113090498A (en) | 2021-03-23 | 2021-03-23 | Oil-free piston type wind source device for urban rail vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113090498A true CN113090498A (en) | 2021-07-09 |
Family
ID=76668945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110305358.5A Pending CN113090498A (en) | 2021-03-23 | 2021-03-23 | Oil-free piston type wind source device for urban rail vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113090498A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3150077U (en) * | 2009-01-29 | 2009-04-30 | 三菱重工業株式会社 | Air compressor for railway vehicles |
| CN204267283U (en) * | 2014-04-29 | 2015-04-15 | 东莞雅迪勤压缩机制造有限公司 | One is low safeguards oil-free vortex formula silent air compressor |
| CN105351192A (en) * | 2015-11-25 | 2016-02-24 | 唐山轨道客车有限责任公司 | Wind source device for maglev train |
| CN207311414U (en) * | 2017-08-31 | 2018-05-04 | 瑞立集团瑞安汽车零部件有限公司 | A kind of oil-free air supply system |
| CN207311415U (en) * | 2017-08-31 | 2018-05-04 | 瑞立集团瑞安汽车零部件有限公司 | A kind of novel track air supply system |
-
2021
- 2021-03-23 CN CN202110305358.5A patent/CN113090498A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3150077U (en) * | 2009-01-29 | 2009-04-30 | 三菱重工業株式会社 | Air compressor for railway vehicles |
| CN204267283U (en) * | 2014-04-29 | 2015-04-15 | 东莞雅迪勤压缩机制造有限公司 | One is low safeguards oil-free vortex formula silent air compressor |
| CN105351192A (en) * | 2015-11-25 | 2016-02-24 | 唐山轨道客车有限责任公司 | Wind source device for maglev train |
| CN207311414U (en) * | 2017-08-31 | 2018-05-04 | 瑞立集团瑞安汽车零部件有限公司 | A kind of oil-free air supply system |
| CN207311415U (en) * | 2017-08-31 | 2018-05-04 | 瑞立集团瑞安汽车零部件有限公司 | A kind of novel track air supply system |
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| PB01 | Publication | ||
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Application publication date: 20210709 |