CN201461404U - Screw compressor for locomotive - Google Patents
Screw compressor for locomotive Download PDFInfo
- Publication number
- CN201461404U CN201461404U CN2009200783970U CN200920078397U CN201461404U CN 201461404 U CN201461404 U CN 201461404U CN 2009200783970 U CN2009200783970 U CN 2009200783970U CN 200920078397 U CN200920078397 U CN 200920078397U CN 201461404 U CN201461404 U CN 201461404U
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- switch
- air
- lubricant oil
- control
- locomotive
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Abstract
The utility model discloses a screw compressor for a locomotive. The screw compressor comprises a main machine, a compressed air radiator, a radiating blower, a lubricant backflow adjusting and controlling through hole and a lubricant backflow injector; a protection device comprises an air pressure adjusting and controlling switch, an anti-counterrotation switch, a lubricating oil pressure relief switch, a temperature control switch and a safety valve; the compressed air radiator is connected with the air pressure adjusting and controlling switch; the radiating blower is positioned between the lubricant backflow injector and the compressed air radiator; the anti-counterrotation prevention switch is connected at the air inlet of the main machine; the lubricating oil pressure relief switch is connected between the lubricant backflow adjusting and controlling through hole and the lubricant backflow injector; the temperature control switch is connected at the exhaust port of the main machine; the main machineis connected with an air reservoir; and the air reservoir is connected with the safety valve. The screw compressor for the locomotive can manage, monitor and ensure the normal operation of an air compressor, prevent the compressor from being damaged, and achieve the utmost efficiency.
Description
Technical field
The utility model relates to a kind of compressor, particularly a kind of locomotive helical-lobe compressor.
Background technique
The locomotive helical-lobe compressor is a kind of machinery that track train uses that is exclusively used in.Locomotive uses helical-lobe compressor with respect to general helical-lobe compressor, except itself satisfying the use wind supply quantity, need also to consider that compressor is to operate under steam the track train, require compressor under different conditions and environment, to operate, can manage, monitor and guarantee the normal operation of air compressor.But existing locomotive all can't manage, monitors and guarantee the normal operation of air compressor with helical-lobe compressor.
The model utility content
The technical problems to be solved in the utility model is in order to overcome the defective of prior art, a kind of locomotive helical-lobe compressor to be provided, and it sets up the normal operation that air compressor was managed, monitors and guaranteed to protective gear, and it is the most high-effect to avoid compressor to be undermined performance.
The present invention solves above-mentioned technical problem by following technical proposals: a kind of locomotive helical-lobe compressor; it is characterized in that; it comprises main frame; the pressurized air radiator; the heat transmission blower; lubricant oil backflow regulation and control through hole and lubricant oil backflow injection syringe; protective gear comprises the air pressure regulating switch; prevent the reverse rotation switch; lubricant oil safety oil pressure switch; temp control switch and safety valve; the pressurized air radiator connects the air pressure regulating switch; the heat transmission blower is between lubricant oil backflow injection syringe and pressurized air radiator; prevent the reverse rotation switch in the connection of the suction port place of main frame; lubricant oil refluxes and connects lubricant oil safety oil pressure switch between regulation and control through hole and the lubricant oil backflow injection syringe; exhaust ports at main frame connects a temp control switch; main frame is connected with air reservoir, and air reservoir is connected with safety valve.
Preferably, described lubricant oil backflow regulation and control through hole is connected with a lubricating oil filter, and lubricating oil filter is connected with a temperature control diverter valve.
Preferably, described locomotive also comprises fine filter, safety check and fine filtering loop regulation and control through hole with helical-lobe compressor, and fine filter, safety check and fine filtering loop regulation and control through hole are linked in sequence.
Positive progressive effect of the present utility model is: the utility model locomotive with helical-lobe compressor by setting up protective gear; under satisfied use wind supply quantity prerequisite own, guarantee to drive vitals such as motor and compressor the longest cycle in working life is arranged; protective gear is being managed the startup and shutdown signal under different situations simultaneously; protective gear is to have higher flexibility and adaptability by software control, and compressor can be operated under different conditions and environment.
Description of drawings
Fig. 1 is the utility model one embodiment's a structural representation.
Embodiment
Lift a preferred embodiment below, and come the clearer the utility model that intactly illustrates in conjunction with the accompanying drawings.
Setting up protective gear is exactly the important symbol of locomotive with helical-lobe compressor; locomotive is in order to manage, monitor and guarantee the normal operation of air compressor with the protective gear of helical-lobe compressor; it is the most high-effect to avoid compressor to be undermined performance; air compressor is provided with triple protection, and this is the important component part of compressor control.
As shown in Figure 1, the utility model locomotive comprises air filter 11 with helical-lobe compressor, air intake valve 12, main frame 13, exhaust solenoid valve 14, air reservoir 15, lubricant oil backflow regulation and control through hole 16, separator-filter 17, barometric minimum monitoring valve 18, lubricating oil filter 19, lubricant oil backflow injection syringe 20, temperature control diverter valve 21, lubricant oil radiator 22, safety check 23, fine filtering loop regulation and control through hole 24, air pressure regulating switch 25, heat transmission blower 26, pressurized air radiator 27, prevent reverse rotation switch 28, lubricant oil safety oil pressure switch 29, temp control switch 30, safety valve 31, fine filter 32, pollution displaying device 33, step-down regulation and control through hole 34 and lubricant oil reflux line 35.Lubricant oil backflow regulation and control through hole 16 is connected with lubricating oil filter 19, and lubricating oil filter 19 is connected with temperature control diverter valve 21.Fine filter 32, safety check 23 and fine filtering loop regulation and control through hole 24 are linked in sequence.
Wherein protective gear comprise air pressure regulating switch 25, prevent reverse rotation switch 28, lubricant oil safety oil pressure switch 29, temp control switch 30 and safety valve 31.Pressurized air radiator 27 connects air pressure regulating switch 25, heat transmission blower 26 is between lubricant oil backflow injection syringe 20 and pressurized air radiator 27, prevent reverse rotation switch 28 in the connection of the suction port place of main frame 13, lubricant oil refluxes and connects lubricant oil safety oil pressure switch 29 between regulation and control through hole 16 and the lubricant oil backflow injection syringe 20, exhaust ports at main frame 13 connects a temp control switch 30, main frame 13 is connected with air reservoir 15, and air reservoir 15 is connected with safety valve 31.
Drive motor is to drive air compressor work with flexible connector, and when air compressor moved, air was opened air intake valve 12 through air filter 11, enters main frame 13 then.At one time, exhaust solenoid valve 14 is closed, and discharges outward thereby stop air.Compression back air increases the air pressure in the air reservoir 15, at one time in, air pressure drives lubricant oil and returns air compressor by the lubricant oil regulation and control through hole 16 that refluxes through lubricant oil backflow injection syringe 20.The pressurized air that mixes with lubricant oil filters back and lubricating oil separation through separator-filter 17.The function of barometric minimum monitoring valve 18 is to reach 4～5bar at air pressure (bar is a pressure unit, 1bar=0.1MPa) stops air output to have enough pressure-driven lubricant oil to reflux to guarantee air reservoir 15 before.
Inject in the air reservoir 15 after utilizing air after centrifugal force will compress and lubricant oil initial gross separation, the lubricant oil after the separation utilizes the air pressure in the air reservoir 15 to return in the air compressor and recycle through reflux regulation and control through hole 16 and lubricant oil backflow injection syringes 20 of lubricating oil filter 19, lubricant oil.Under the situation of low oily temperature (air compressor initial start stage), temperature control diverter valve 21 can will cut out towards the loop of lubricant oil radiator lubricant oil is directly returned in the air compressor through lubricating oil filter 19, lubricant oil backflow regulation and control through hole 16 and lubricant oil backflow injection syringe 20.When needing cooling when the rising of oil temperature, temperature control diverter valve 21 can cut out direct loop and will open towards the loop of lubricant oil radiator 22, and lubricant oil is just returned in the air compressor through lubricating oil filter 19, lubricant oil backflow regulation and control through hole 16 and lubricant oil backflow injection syringe 20 after the radiator cooling.Still the lubricant oil that contains certain deal after initial gross separation in the pressurized air is exported then so will remove remaining lubricant oil with separator-filter 17.In order to ensure there being enough air pressure to reflux for lubricant oil, on compressed-air actuated output pipeline, be provided with barometric minimum monitoring valve 18, just allow pressurized air safety check output in barometric minimum monitoring valve 18 when air pressure rises to 4.5～5bar, the lubricant oil of separating out through separator-filter 17 is then regulated and control through hole 24 through the built-in fine filter 32 of injection syringe, safety check 23 and fine filtering loop and is returned air compressor and recycle.
When air consumption descends, pressure will increase, when pressure reaches the capping of air pressure regulating switch, motor will be cut off out of service because of power supply, air pressure in the air reservoir 15 then can be by exhaust solenoid valve 14 dischargings. and the setting that falls to air pressure regulating switch 25 when air pressure is prescribed a time limit down, pressure switch can be recovered motor power supply and air compressor also restarts. because machine run, the oil of air compressor inside is because pressure, if control diverter valve 21. oily temperature too low (this phenomenon only can take place when machine just starts) from the gas holder to the temperature, at this moment directly to lubricating oil filter 19, lubricant oil backflow injection syringe 20 from there to main oil sprayer, allow an amount of oil to pass through through lubricant oil backflow regulation and control through hole 16, this is the proper operation of air compressor. on the other hand, if oil is warm when higher, temperature control valve (TCV) is delivered to lubricant oil radiator 22 to oil, and all utilizes heat transmission blower 26 cold wind is blown over lubricant oil radiator 22 and pressurized air radiator 27 and to cool off to lubricant oil backflow injection syringe 20. air of main oil sprayer and lubricant oil therefrom.
For locomotive is carried out overtemperature and overpressure protection with helical-lobe compressor, the oily temperature upper limit is set in 110 ℃ ± 5 ℃, and upper pressure limit then is set in 15bar.Exhaust ports at main frame 13 connects a temp control switch 30, overtemperature is then by a pair of normally-closed contact control that is serially connected on running control loop, the temperature inductor, when oil temperature surpass set on when being limited to 110 ℃, normally-closed contact can separate, on the running control loop, become to open circuit and equipment running on stopping, normally-closed contact just can be replied closure when oily temperature drops to 90 ℃, and system can be operated once again.For fear of superpressure, attachment security valve 31 on air reservoir 15, when pressure exceeded the upper pressure limit 15bar of setting, safety valve 31 can be opened automatically pressure is discharged.
Locomotive is carried out the protection of oil starvation or oil pressure deficiency with helical-lobe compressor, and the oil pressure lower limit set is at 2.5bar.Except lubrication, another critical function of lubricant oil is the space between the seal compression screw rod, make the screw rod can be effectively with air compression, the running of lubricant oil is promoted by the air pressure difference between compression screw rod import and the outlet, be because leakage of oil or other are former thereby cause that pressure reduction descends, the running low on fuel all can affect to gas compression usefulness, or serious can causing the compression screw rod is for want of lubricated and damage.If at short notice, the pressure reduction that promotes lubricant oil can not reach the following of setting prescribes a time limit, and must stop the running of air compressor.In order to protect the compression screw rod, between lubricant oil backflow regulation and control through hole 16 and lubricant oil backflow injection syringe 20, connect lubricant oil safety oil pressure switch 29, and the pressure reduction lower limit of lubricant oil safety oil pressure switch 29 is 2.5bar.The initial stage that is starting, fail reach minimum following in limited time in 6 seconds with interior if promote the pressure reduction of lubricant oil, or in operation process, because leakage of oil or other are former thereby cause that pressure reduction drops to and be lower than down in limited time, a pair of normally-closed contact on the pressure inductor will separate, cut off the running control loop, the halt system running.
Locomotive is carried out counter-rotation and undesired pressure decline protection with helical-lobe compressor, be limited to 0.9bar on the setting pressure of pressure protect sensor.First or during the starting device of guarantee back, might be because the three phase supply phase sequence drive the motor backward rotation to causing, connect at the suction port place of main frame 13 and to prevent that reverse rotation switch 28 from damaging because of backward rotation to prevent air compressor and drive motor.When air compressor ran well, the air pressure of air intlet should be negative pressure, if but the air compressor backward rotation, then the air pressure at air intlet place can transfer malleation to by negative pressure, prevents that reverse rotation switch 28 is activated and stops compressor operation.
In order to protect compressor and to drive motor; pressurized air radiator 27 connects air pressure regulating switch 25; when the air pressure at air intlet place reaches or is higher than on the setting pressure of pressure protect sensor in limited time; air pressure regulating switch 25 is serially connected in a pair of normally-closed contact that rotates on the control loop and just can disconnects; cut off and rotate the control loop; stop the running of air compressor, can not be subjected to permanent damage to guarantee compressing screw rod and to drive motor.Pressure discharging after the shutdown is specific as follows: the vent valves air compressor on the air compressor is provided with discharge solenoid valve 14; when air compressor shuts down; discharging can be opened automatically with solenoid valve 14; air in the pressurized air loop is discharged outward by step-down regulation and control through hole 34; before the air pressure in not discharging air reservoir 15; prevent that reverse rotation switch 28 from can stop air compressor to start; motor can be started under the ideal condition of zero load; Peak current when therefore no matter being electric motor starting and time can reduce to minimum, and motor also can be extended down to the longest working life.Discharge solenoid valve can be activated and shut automatically when air compressor starts, the normal state when returning to running.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these mode of executions.Therefore, protection scope of the present invention is limited by appended claims.
Claims (3)
1. locomotive helical-lobe compressor; it is characterized in that; it comprises main frame; the pressurized air radiator; the heat transmission blower; lubricant oil backflow regulation and control through hole and lubricant oil backflow injection syringe; protective gear comprises the air pressure regulating switch; prevent the reverse rotation switch; lubricant oil safety oil pressure switch; temp control switch and safety valve; the pressurized air radiator connects the air pressure regulating switch; the heat transmission blower is between lubricant oil backflow injection syringe and pressurized air radiator; prevent the reverse rotation switch in the connection of the suction port place of main frame; lubricant oil refluxes and connects lubricant oil safety oil pressure switch between regulation and control through hole and the lubricant oil backflow injection syringe; exhaust ports at main frame connects a temp control switch; main frame is connected with air reservoir, and air reservoir is connected with safety valve.
2. locomotive helical-lobe compressor as claimed in claim 1 is characterized in that, described lubricant oil backflow regulation and control through hole is connected with a lubricating oil filter, and lubricating oil filter is connected with a temperature control diverter valve.
3. locomotive helical-lobe compressor as claimed in claim 1, it is characterized in that, described locomotive also comprises fine filter, safety check and fine filtering loop regulation and control through hole with helical-lobe compressor, and fine filter, safety check and fine filtering loop regulation and control through hole are linked in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200783970U CN201461404U (en) | 2009-07-17 | 2009-07-17 | Screw compressor for locomotive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200783970U CN201461404U (en) | 2009-07-17 | 2009-07-17 | Screw compressor for locomotive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201461404U true CN201461404U (en) | 2010-05-12 |
Family
ID=42388758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200783970U Expired - Fee Related CN201461404U (en) | 2009-07-17 | 2009-07-17 | Screw compressor for locomotive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201461404U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927010A (en) * | 2012-11-19 | 2013-02-13 | 南车株洲电力机车有限公司 | Screw compressor and control device and method of screw compressor |
| US11499767B2 (en) | 2018-04-09 | 2022-11-15 | Carrier Corporation | Reverse rotation prevention in centrifugal compressor |
-
2009
- 2009-07-17 CN CN2009200783970U patent/CN201461404U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927010A (en) * | 2012-11-19 | 2013-02-13 | 南车株洲电力机车有限公司 | Screw compressor and control device and method of screw compressor |
| CN102927010B (en) * | 2012-11-19 | 2016-01-13 | 南车株洲电力机车有限公司 | A kind of helical-lobe compressor and control gear thereof and controlling method |
| US11499767B2 (en) | 2018-04-09 | 2022-11-15 | Carrier Corporation | Reverse rotation prevention in centrifugal compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20170717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |