CN110681235A - Integrated compressed air post-processing device for rail transit vehicle - Google Patents
Integrated compressed air post-processing device for rail transit vehicle Download PDFInfo
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- CN110681235A CN110681235A CN201911118529.2A CN201911118529A CN110681235A CN 110681235 A CN110681235 A CN 110681235A CN 201911118529 A CN201911118529 A CN 201911118529A CN 110681235 A CN110681235 A CN 110681235A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/24—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by centrifugal force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H11/00—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types
- B61H11/06—Applications or arrangements of braking or retarding apparatus not otherwise provided for; Combinations of apparatus of different kinds or types of hydrostatic, hydrodynamic, or aerodynamic brakes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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- Chemical Kinetics & Catalysis (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses an integrated compressed air post-treatment device for a rail transit vehicle, which comprises a hoisting frame, wherein the hoisting frame is integrated with a front oil-water separator, a double-tower dryer, a rear dust removal filter and a blow-down valve, the double-tower dryer is electrically connected with the vehicle through an electric connector, the front oil-water separator is connected with the double-tower dryer through a first air pipe, the double-tower dryer is connected with the rear dust removal filter through a second air pipe, the bottom of the front oil-water separator is provided with a blow-down port, and the blow-down port and the rear dust removal filter are respectively provided with the blow-down valve. The invention can effectively purify oil and solid particles in the compressed air, dry the compressed air and output clean and dry compressed air, has compact structure, can be applied to the rear ends of compressors of different models, is convenient to install, disassemble and maintain, can continuously operate for a long time and has strong environmental adaptability.
Description
Technical Field
The invention relates to the technical field of rail vehicle braking, in particular to an integrated compressed air post-processing device for a rail transit vehicle.
Background
The brake system of the rail transit vehicle needs to use clean and dry compressed air, and the cleanness and the dryness of the compressed air influence the functions, the reliability and the service life of pneumatic components and equipment, and are directly related to the operation safety and the operation and maintenance cost of the vehicle. At present, the domestic rail transit vehicles generally adopt an oil lubrication compressor, saturated wet air generated by the compressor has large oil content and a large amount of solid particles, and cannot be directly used for rear-end pneumatic equipment, so that the compressed air needs to be treated, and clean and dry compressed air is output for the rear-end pneumatic equipment to use.
Compressed air of the existing rail transit vehicle is generally dried by three modes of a membrane dryer, a single-tower dryer and a double-tower dryer.
The membrane dryer needs a three-stage filtering device of a front oil-water separator, a precision filter and a super-precision filter, and the mode has many connecting pipelines and is complex to install. The drying effect of the membrane dryer is general, and the dew point of the dried compressed air pressure can only reach the 3-grade requirement specified by ISO 8573: 2010. In the field of rail transit, a compressor is frequently started and stopped, the working environment is severe, and the membrane type dryer often has leakage faults due to the damage of a silk membrane.
The single-tower dryer is adopted, a back-blowing air cylinder is required, the structure is complex, and the installation is unchanged. The single-tower dryer has limited processing capacity, can only realize back flushing regeneration when the compressor is stopped, and cannot adapt to the working condition of long-time continuous work.
When a double-tower dryer is directly adopted, a large amount of liquid water and oil are easy to enter an adsorption tower of the double-tower dryer, the service life of the adsorbent is directly influenced, and the air quality of the compressed air is obviously reduced in the later stage of the repair process. The double-tower dryer for the rail transit generally adopts a molecular sieve as an adsorbent, and the molecular sieve is impacted by frequent airflow due to frequent start and stop of a compressor, so that tiny powder particles are easily generated, the powder particles directly enter rear-end pneumatic equipment without being processed, the action performance and the service life of the pneumatic equipment are adversely affected, and the safe operation of rail transit vehicles is affected.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the integrated compressed air post-treatment device for the rail transit vehicle, which can effectively purify oil and solid particles in compressed air, dry the compressed air, output clean and dry compressed air, has a compact structure, can be applied to the rear ends of compressors of different models, is convenient to install, disassemble and maintain, can run uninterruptedly for a long time, and has strong environmental adaptability.
The purpose of the invention is realized by the following technical scheme.
The utility model provides a track is integrated form compressed air aftertreatment device for transportation vehicles, includes the hoist and mount frame, the hoist and mount frame integration has leading oil water separator, two tower desicators, rearmounted dust removal filter, blowoff valve, two tower desicators pass through electric connector and vehicle realization electric connection, leading oil water separator is connected with two tower desicators through first trachea, two tower desicators are connected with rearmounted dust removal filter through the second trachea, leading oil water separator bottom is provided with the drain, all be provided with the blowoff valve on drain department and the rearmounted dust removal filter.
The double-tower dryer comprises a reversing pneumatic valve, a left reversing electromagnetic valve, a right reversing electromagnetic valve, a reversing pilot valve, a left adsorption tower and a right adsorption tower, the preposed oil-water separator is connected with a reversing pneumatic valve, the left adsorption tower and the right adsorption tower are respectively connected with a gas path of the reversing pneumatic valve, the left reversing solenoid valve and the right reversing solenoid valve respectively control the pistons at the left side and the right side of the reversing pneumatic valve, the left reversing electromagnetic valve and the right reversing electromagnetic valve are respectively connected with the reversing pilot valve, the left adsorption tower is respectively connected with the reversing pilot valve and the dryer outlet test socket through a left adsorption tower check valve, the right adsorption tower is respectively connected with the reversing pilot valve and the dryer outlet test socket through a right adsorption tower check valve, the dryer outlet test socket is connected with a rear dust removal filter, and a regeneration throttling bolt is arranged between the left adsorption tower and the right adsorption tower.
The reversing pneumatic valve is connected with a silencer.
The blow-down valve is a manual blow-down valve and/or an electromagnetic blow-down valve.
The electromagnetic blow-down valve is electrically connected with the vehicle through an electric connector.
And a heater is arranged at the sewage draining port.
There are four through-holes at hoist and mount frame top, the through-hole realizes hoist and mount through bolt and vehicle or compressor gallows and is connected.
Compared with the prior art, the invention has the advantages that: the integrated and integrated compressed air post-treatment device is formed by integrating a front oil-water separator, a drain valve, a heater, a double-tower dryer and a rear dust removal filter through a hoisting frame. The air purifier is installed at the rear end of the compressor, can effectively purify oil and solid particles in compressed air, dries the compressed air, and outputs clean and dry compressed air for pneumatic equipment of a rear-end vehicle to use.
The compressed air post-processing device integrates the front oil-water separator, the double-tower dryer and the rear dust removal filter through the hoisting frame, is compact in structure, can be applied to the rear ends of compressors of different models for compressed air post-processing, has a flow range of 0-1200L/min, realizes hoisting through four hoisting holes, realizes electrical connection through an electric connector, and is convenient to install, disassemble and maintain.
The compressed air post-processing device mainly functions to process compressed air generated by a compressor of the rail transit vehicle. After the compressed air generated by the compressor is treated by the device, the solid particle content, the water content and the oil content of the compressed air can reach the 2-2-2 grade requirements specified by ISO 8573-1: 2010.
The compressed air post-treatment device can run uninterruptedly for a long time. Can realize 6 years of maintenance-free, and meets the longest advanced repair journey requirement of the current domestic rail transit vehicles.
The device has strong environmental adaptability and can be normally used at the environmental temperature of minus 40 ℃ to 50 ℃.
Drawings
FIG. 1 is a top view of the present invention.
Fig. 2 is an axial view of the present invention.
Fig. 3 is an axial view of the present invention.
Fig. 4 is a schematic diagram of the gas circuit of the present invention.
In the figure: 1-hoisting a frame; 2-preposition oil-water separator; 3-double-tower dryer; 4-post dust-removing filter; 5-manual blowoff valve 6-electromagnetic blowoff valve; 7-a heater; 8-a second trachea; 9-a first air pipe; 10-a silencer; 11-a reversing pneumatic valve; 12-a left reversing solenoid valve; 13-right reversing electromagnetic valve; 14-a commutating pilot valve; 15-regeneration throttle bolt; 16-a left adsorption column; 17-right adsorption column; 18-left adsorption column check valve; 19-right adsorption column check valve; 20-dryer outlet test socket; 21-a compressed air inlet; 22-compressed air outlet; 23-an electrical connector; 24-back flushing; 25-a sewage draining outlet.
Detailed Description
The invention is described in detail below with reference to the drawings and specific examples.
As shown in fig. 1-3, an integrated compressed air post-processing device for rail transit vehicle, includes hoist and mount frame 1, hoist and mount frame 1 is integrated to have leading oil water separator 2, two tower desicators 3, rearmounted dust removal filter 4, blowoff valve, two tower desicators 3 realize electric connection with the vehicle through electric connector 23, and installation and dismantlement are convenient, leading oil water separator 2 is connected with two tower desicators 3 through first trachea 9, two tower desicators 3 are connected with rearmounted dust removal filter 4 through second trachea 8, leading oil water separator 2 bottom is provided with drain 25, drain 25 department and rearmounted dust removal filter 4 all are provided with the blowoff valve.
The double-tower dryer 3 comprises a reversing air-operated valve 11, a left reversing electromagnetic valve 12, a right reversing electromagnetic valve 13, a reversing pilot valve 14, a left adsorption tower 16 and a right adsorption tower 17, the preposed oil-water separator 2 is connected with the reversing air-operated valve 11, the left adsorption tower 16 and the right adsorption tower 17 are respectively connected with the reversing air-operated valve 11 through air passages, the left reversing electromagnetic valve 12 and the right reversing electromagnetic valve 13 respectively control pistons at the left and right sides of the reversing air-operated valve 11, the left reversing electromagnetic valve 12 and the right reversing electromagnetic valve 13 are respectively connected with the reversing pilot valve 14, the left adsorption tower 16 is respectively connected with the reversing pilot valve 14 and a dryer outlet test socket 20 through a left adsorption tower check valve 18, the right adsorption tower 17 is respectively connected with the reversing pilot valve 14 and the dryer outlet test socket 20 through a right adsorption tower check valve 19, the dryer outlet test socket 20 is connected with a rear dust removal filter 4, a regeneration throttle bolt 15 is arranged between the left adsorption tower 16 and the right adsorption tower 17.
The reversing air-operated valve 11 is connected with a silencer 10.
The blow-down valve is a manual blow-down valve and/or an electromagnetic blow-down valve.
The electromagnetic blow-down valve 6 is electrically connected with the vehicle through the electric connector 23, and is convenient to install and disassemble.
There are four through-holes at hoist and mount frame 1 top, the through-hole realizes hoist and mount through bolt and vehicle or compressor gallows and is connected.
Compressed air generated by the compressor firstly enters the preposed oil-water separator 2 through a compressed air inlet 21, cyclone is generated in the preposed oil-water separator 2, liquid water and oil are separated to the bottom of the preposed oil-water separator 2 through the centrifugal force, and the liquid water, the oil and partial solid particles are discharged through the electromagnetic blow-down valve 6 after the compressor is stopped. In cold weather, in order to prevent the blockage of the sewage channel caused by the icing of the liquid water, a heater 7 is arranged at the sewage outlet of the preposed oil-water separator 2.
The compressed air then enters the double-tower dryer 3 via the first air line 9 for drying. As shown in fig. 4, the compressed wet air enters the reversing air-operated valve 11, and inflates the left adsorption tower 16 and the right adsorption tower 17 simultaneously, and the control air pressure in the system is preferentially established due to the pressure accumulation non-return function of the minimum pressure valve. In the first half cycle, the left reversing solenoid valve 12 is energized, and when the pressure in the system exceeds the pilot pressure of the reversing pilot valve 14, the left piston of the reversing pneumatic valve 11 is pushed, and the left regeneration port is opened while the left air inlet is closed. At this time, the high-pressure wet air supplied from the compressor is pressurized from the bottom to the top by the switching pneumatic valve 11 to dry and filter the wet air, and at this time, the right adsorption tower 17 is a "drying tower". The regeneration gas is directly communicated with the atmospheric pressure through a regeneration throttle valve 15 and a left adsorption tower 16, and is rapidly expanded in the decompression process. Since the capacity of air to contain water vapor is inversely proportional to the pressure, the expanded air becomes drier due to the pressure change, when the air flow blows the adsorbent layer of the left adsorption tower 16 from top to bottom, water molecules accumulated in the porous chambers of the molecular sieve are gradually taken away to form a wet air flow, and the wet air flow is slowly discharged through the silencer 10 to achieve the purpose of dehumidification ("regeneration"), and at the moment, the left adsorption tower 16 is a regeneration tower. And when the first half period is finished, the control time sequence automatically enters the second half period. At this time, the right direction-changing solenoid valve 13 is energized, and the left direction-changing solenoid valve 12 is de-energized. The original "drying tower" is converted into a "regeneration tower", and the original "regeneration tower" is converted into a "drying tower". Therefore, the upper half period and the lower half period are alternately circulated and repeated, and the uninterrupted normal work of the double-tower dryer 3 can be ensured.
The compressed air is dried by the double-tower dryer 3 and then enters the post-dust-removing filter 4 through the second air pipe 8. In the working process of the double-tower dryer 3, the molecular sieve in the adsorption tower is easy to generate micro solid particles in the frequent pressurizing and pressure releasing processes, and in order to ensure the final air quality, a post-dust removal filter 4 is added to filter the micro solid particles. Finally, clean and dry compressed air is output through the compressed air outlet 22, and the content of solid particles, water and oil can reach the 2-2-2 requirements specified in ISO 8573-1: 2010. The solid particles filtered by the post-positioned dust removal filter 4 are discharged only through the manual blowoff valve 5 in the maintenance process.
Claims (7)
1. The utility model provides a track is integrated form compressed air aftertreatment device for transportation vehicles, includes the hoist and mount frame, its characterized in that the hoist and mount frame integration has leading oil water separator, two tower driers, rearmounted dust removal filter, blowoff valve, two tower driers pass through electric connector and vehicle realization electric connection, leading oil water separator is connected with two tower driers through first trachea, two tower driers are connected with rearmounted dust removal filter through the second trachea, leading oil water separator bottom is provided with the drain, all be provided with the blowoff valve on drain department and the rearmounted dust removal filter.
2. The integrated compressed air post-processing device for the rail transit vehicle as claimed in claim 1, wherein the double-tower dryer comprises a reversing pneumatic valve, a left reversing solenoid valve, a right reversing solenoid valve, a reversing pilot valve, a left adsorption tower and a right adsorption tower, the pre-oil-water separator is connected with the reversing pneumatic valve, the left adsorption tower and the right adsorption tower are respectively connected with a reversing pneumatic valve gas circuit, the left reversing solenoid valve and the right reversing solenoid valve respectively control pistons at the left and right sides of the reversing pneumatic valve, the left reversing solenoid valve and the right reversing solenoid valve are respectively connected with the reversing pilot valve, the left adsorption tower is respectively connected with the reversing pilot valve and a dryer outlet test socket through a left adsorption tower check valve, the right adsorption tower is respectively connected with the reversing pilot valve and the dryer outlet test socket through a right adsorption tower check valve, the dryer outlet test socket is connected with a rear dust removal filter, and a regeneration throttling bolt is arranged between the left adsorption tower and the right adsorption tower.
3. The integrated compressed air post-processing device for the rail transit vehicle as claimed in claim 2, wherein a silencer is connected to the reversing pneumatic valve.
4. The integrated compressed air post-processing device for the rail transit vehicle as claimed in claim 1 or 2, wherein the blow-off valve is a manual blow-off valve and/or an electromagnetic blow-off valve.
5. The integrated compressed air post-processing device for the rail transit vehicle as claimed in claim 4, wherein the electromagnetic blow-down valve is electrically connected with the vehicle through an electric connector.
6. An integrated compressed air after-treatment device for rail transit vehicles according to claim 1 or 2, wherein a heater is provided at the sewage outlet.
7. The integrated compressed air post-processing device for the rail transit vehicle as claimed in claim 1 or 2, wherein the top of the hoisting frame is provided with four through holes, and the through holes are connected with a vehicle or a compressor hanger in a hoisting manner through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911118529.2A CN110681235A (en) | 2019-11-15 | 2019-11-15 | Integrated compressed air post-processing device for rail transit vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911118529.2A CN110681235A (en) | 2019-11-15 | 2019-11-15 | Integrated compressed air post-processing device for rail transit vehicle |
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| Publication Number | Publication Date |
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| CN110681235A true CN110681235A (en) | 2020-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911118529.2A Pending CN110681235A (en) | 2019-11-15 | 2019-11-15 | Integrated compressed air post-processing device for rail transit vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677652A (en) * | 2020-05-07 | 2020-09-18 | 常州机电职业技术学院 | Large-scale new energy locomotive wind regime device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107233774A (en) * | 2017-06-30 | 2017-10-10 | 南京中车浦镇海泰制动设备有限公司 | A kind of track traffic combined gas filter |
| CN207025010U (en) * | 2017-08-07 | 2018-02-23 | 刘友葵 | A kind of compressed-air drier |
| CN208082162U (en) * | 2018-03-20 | 2018-11-13 | 哈尔滨电机厂有限责任公司 | A kind of reproduction adsorption type drying machine that can be linked with air compressor machine |
| CN110090533A (en) * | 2019-04-30 | 2019-08-06 | 南京中车浦镇海泰制动设备有限公司 | A kind of rail traffic heatless regeneration double-tower dryer |
-
2019
- 2019-11-15 CN CN201911118529.2A patent/CN110681235A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107233774A (en) * | 2017-06-30 | 2017-10-10 | 南京中车浦镇海泰制动设备有限公司 | A kind of track traffic combined gas filter |
| CN207025010U (en) * | 2017-08-07 | 2018-02-23 | 刘友葵 | A kind of compressed-air drier |
| CN208082162U (en) * | 2018-03-20 | 2018-11-13 | 哈尔滨电机厂有限责任公司 | A kind of reproduction adsorption type drying machine that can be linked with air compressor machine |
| CN110090533A (en) * | 2019-04-30 | 2019-08-06 | 南京中车浦镇海泰制动设备有限公司 | A kind of rail traffic heatless regeneration double-tower dryer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111677652A (en) * | 2020-05-07 | 2020-09-18 | 常州机电职业技术学院 | Large-scale new energy locomotive wind regime device |
| CN111677652B (en) * | 2020-05-07 | 2021-10-01 | 常州机电职业技术学院 | Large-scale new energy locomotive wind regime device |
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Application publication date: 20200114 |