CN104533770A - Protection method for effectively preventing damage to air compressor - Google Patents
Protection method for effectively preventing damage to air compressor Download PDFInfo
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- CN104533770A CN104533770A CN201410687114.8A CN201410687114A CN104533770A CN 104533770 A CN104533770 A CN 104533770A CN 201410687114 A CN201410687114 A CN 201410687114A CN 104533770 A CN104533770 A CN 104533770A
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- air compressor
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Abstract
The invention discloses a protection method for effectively preventing the damage to an air compressor. An oil and gas barrel of the air compressor is connected with a pressure senor; the pressure sensor is connected with a single chip microcomputer which is provided with a fault alarm limit value and a high pressure downtime limit value; the range of the fault alarm limit value is 0.15 to 0.20 MPa and a fault of an air inlet valve is displayed on the single chip microcomputer and a unit does not shut down when the limit value is achieved; the range of the high pressure downtime limit value is 0.23 to 0.28 MPa and results that the internal pressure is too high and the air inlet valve needs to be maintained are displayed on the single chip microcomputer and meanwhile a shutdown instruction is sent to a motor of the air compressor when the limit value is achieved. According to the protection method for effectively preventing the damage to the air compressor, the start and stop of the air compressor is controlled by the change speed and range of the temperature and the pressure and accordingly the damage to the air compressor can be effectively prevented.
Description
Technical field
Patent of the present invention relates to a kind of guard method that can effectively prevent air compressor from damaging, and belongs to floating seedlings assistant tool.
Background technique
Air compressor is the device mechanical energy of motor being converted to gas pressure energy, is compressed-air actuated pressure generator, is all widely used in every field.The Starting mode of general air compressor adopts star triangle start mode mostly.Suction valve is closed condition to use the air compressor of this Starting mode to require.As suction valve fault is not closed, cause unit starting under load, starting time is elongated, and inrush current meeting compared with normal situation is large.The misoperation of current air compressor controller program for preventing current detecting from causing unit in the process started, so generally take the method shielding over-current and-load detection, thus escapes inrush current.This way makes the starting time of unit long, likely causes air compressor electric components to burn, even causes power circuit breaker tripping fault.
Meanwhile, air compressor can produce amount of heat in the process run.When air compressor host generation exception or compressor oil starvation, the gas temperature of discharging from air compressor host can raise rapidly, finally burns main frame.For protection air compressor normally runs; the method of existing protected host is the temperature of monitoring air compressor host relief opening; when temperature reaches warning or shuts down setting value, unit meeting automatic alarm also urgent autostop, to protect air compressor host (abbreviation overtemperature prote).One of defect of this method is: only temperature reach very high-temperature time just work, and some component of air compressor have likely caused injury to a certain degree; Two of defect is: all require higher to the precision of monitoring temperature instrument and reliability.
Summary of the invention
The technical problem to be solved in the present invention is, provide a kind of pace of change by temperature, pressure and scope to control air compressor start and stop, the guard method that can effectively prevent air compressor from damaging, can overcome the deficiencies in the prior art.
Technological scheme of the present invention is: the guard method that can effectively prevent air compressor from damaging is Bonding pressure sensor in the barrel of oil and gas of air compressor, and pressure transducer is connected with single-chip microcomputer, by arranging malfunction alarm limit value and high pressure shutdown limit value on single-chip microcomputer, the scope of malfunction alarm limit value is 0.15MPa-0.20MPa, after arriving limit value, single-chip microcomputer shows " suction valve fault ", and unit is not shut down; The scope that high pressure shuts down limit value is 0.23MPa-0.28MPa, and single-chip microcomputer display after arriving limit value " inside presses through height, maintenance suction valve ", and sends halt instruction to the motor of air compressor simultaneously.
The above-mentioned guard method that can effectively prevent air compressor from damaging is; by single-chip microcomputer calculating pressure speedup value; and pressure speedup limit value is set; the scope of pressure speedup limit value is 0.10-0.15MPa/5s, and single-chip microcomputer display " system pressure raises too fast " also sends halt instruction to the motor of air compressor simultaneously.
The aforesaid guard method that can effectively prevent air compressor from damaging is; the outlet port of the air compressor host of air compressor is provided with temperature transducer; and temperature transducer is connected with single-chip microcomputer; by single-chip microcomputer accounting temperature speedup value; and set temperature speedup limit value, the scope of temperature speedup limit value is 5-10 DEG C/5s, when temperature is more than 50 DEG C; microprocessor detect reaches limit value to temperature speedup simultaneously, then the motor to air compressor sends halt instruction.
Compared with the prior art, the proposition of technical solution of the present invention obtained in claimant's long campaigns air compressor PRODUCTION TRAITS process, and it changes and has broken the salvo of conventional air compressor, and its effect is mainly reflected in following three aspects:
1, the stoppage protection that unit starting overlong time is taked is realized by the size of detection system pressure.Its principle be air compressor unit energising start time, if suction valve fault is not closed, enter main frame air quantity will compared with normal situation many, cause the system pressure compared with normal situation of unit high.Under this principle, relevant equipment arranges malfunction alarm limit value and high pressure shutdown limit value, and pressure reaches malfunction alarm limit value group on opportunity display " suction valve fault ", and unit is not shut down; When system pressure exceedes stop value (0.23MPa ~ 0.28MPa), unit display " inside pressing through height ", " maintenance suction valve ", compressor emergency shutdown.
2, the stoppage protection that unit starting overlong time is taked is realized by the speed of detection system pressure ramp-up rate.Its principle be air compressor unit energising start time, if suction valve fault is not closed, air by suction valve enter main frame compression, enter main frame air quantity will compared with normal situation many, cause the system pressure ramp-up rate compared with normal situation of unit fast.When the ramp-up rate Overpressure of a safety valve of system pressure raises permitted value, unit display " system pressure raises too fast ", compressor emergency shutdown.
3, at air compressor host relief opening installing temperature transducer, temperature transducer with can monitor assigned temperature value and be connected with the supervisory device of warming velocity, after such air compressor startup optimization, the main exhaust mouth temperature of controller detection air compressor.When supervisory device detects that main exhaust mouth temperature reaches more than 50 DEG C; and the speed that temperature raises is when reaching limit value; send the failure warning of relative alarm " temperature rise is too fast "; and make unit emergency shutdown; can combine with overtemperature prote like this; opening when air compressor host exhaust port temperatures reaches 50 DEG C just can starting protection function, thus well can avoid the damage of high temperature nuclear reactor air compressor, and the required precision of this structure to temperature transducer is lower.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is pressure limit testing process block diagram;
Fig. 3 position pressure speedup value testing process block diagram;
Fig. 4 position temperature limit testing process block diagram.
Embodiment
Embodiment 1, and as shown in Figure 1, the guard method that can effectively prevent air compressor from damaging in the present invention has following three, and three can be used alone and also can comprehensively jointly use below:
One is, Bonding pressure sensor in the barrel of oil and gas of air compressor, and pressure transducer is connected with single-chip microcomputer, by arranging malfunction alarm limit value and high pressure shutdown limit value on single-chip microcomputer, the scope of malfunction alarm limit value is 0.15MPa-0.20MPa, after force value reaches 0.15MPa-0.20MPa, single-chip microcomputer display " suction valve fault ", unit is not shut down; The scope that high pressure shuts down limit value is 0.23MPa-0.28MPa, and single-chip microcomputer display after force value reach " inside presses through height, maintenance suction valve ", and sends halt instruction to the motor of air compressor simultaneously, and flow chart is as Fig. 2.
It two is; Bonding pressure sensor in the barrel of oil and gas of air compressor; and pressure transducer is connected with single-chip microcomputer; by single-chip microcomputer calculating pressure speedup value, and on single-chip microcomputer, arrange pressure speedup limit value, the scope of pressure speedup limit value is for being 0.10 ~ 0.15MPa/5s; after microprocessor detect is up to standard to speedup; display " system pressure raises too fast ", and send halt instruction to the motor of air compressor simultaneously, flow chart is as Fig. 3.
It three is; the outlet port of the air compressor host of air compressor is provided with temperature transducer; and temperature transducer is connected with single-chip microcomputer; by single-chip microcomputer accounting temperature speedup value, and set temperature speedup limit value, the scope of temperature speedup limit value is 5 ~ 10 DEG C/5s; when temperature is more than 50 DEG C; microprocessor detect reaches limit value to temperature speedup simultaneously, then the motor to air compressor sends halt instruction, and flow chart is as Fig. 4.
Claims (3)
1. the guard method that can effectively prevent air compressor from damaging, it is characterized in that: the method is Bonding pressure sensor in the barrel of oil and gas of air compressor, and pressure transducer is connected with single-chip microcomputer, by arranging malfunction alarm limit value and high pressure shutdown limit value on single-chip microcomputer, the scope of malfunction alarm limit value is 0.15MPa-0.20MPa, after arriving limit value, single-chip microcomputer shows " suction valve fault ", and unit is not shut down; The scope that high pressure shuts down limit value is 0.23MPa-0.28MPa, and single-chip microcomputer display after arriving limit value " inside presses through height, maintenance suction valve ", and sends halt instruction to the motor of air compressor simultaneously.
2. the guard method that can effectively prevent air compressor from damaging according to claim 1; it is characterized in that: by single-chip microcomputer calculating pressure speedup value; and pressure speedup limit value is set; the scope of pressure speedup limit value is 0.10-0.15MPa/5s; single-chip microcomputer display " system pressure raises too fast ", and send halt instruction to the motor of air compressor simultaneously.
3. the guard method that can effectively prevent air compressor from damaging according to claim 1 and 2; it is characterized in that: the outlet port of the air compressor host of air compressor is provided with temperature transducer; and temperature transducer is connected with single-chip microcomputer; by single-chip microcomputer accounting temperature speedup value; and set temperature speedup limit value; the scope of temperature speedup limit value is 5-10 DEG C/5s; when temperature is more than 50 DEG C; microprocessor detect reaches limit value to temperature speedup simultaneously, then the motor to air compressor sends halt instruction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410687114.8A CN104533770B (en) | 2014-11-26 | 2014-11-26 | A kind of guard method that can effectively prevent air compressor from damaging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410687114.8A CN104533770B (en) | 2014-11-26 | 2014-11-26 | A kind of guard method that can effectively prevent air compressor from damaging |
Publications (2)
| Publication Number | Publication Date |
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| CN104533770A true CN104533770A (en) | 2015-04-22 |
| CN104533770B CN104533770B (en) | 2016-06-08 |
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| CN201410687114.8A Expired - Fee Related CN104533770B (en) | 2014-11-26 | 2014-11-26 | A kind of guard method that can effectively prevent air compressor from damaging |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105003437A (en) * | 2015-08-17 | 2015-10-28 | 安徽安凯汽车股份有限公司 | Control system and method for preventing emulsification of lubricating oil of inflation pump for pure electric bus |
| CN106247712A (en) * | 2016-07-29 | 2016-12-21 | 珠海格力电器股份有限公司 | It is applied to temperature-detecting device and the detection method thereof of cooler compressor |
| CN109083832A (en) * | 2018-07-16 | 2018-12-25 | 滁州天陆泓机械有限公司 | Compressor assembly and its control method |
| CN110329235A (en) * | 2019-07-09 | 2019-10-15 | 浙江吉利控股集团有限公司 | A kind of method, apparatus and system monitoring vehicle mounted electric air compressor |
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| CN106247712A (en) * | 2016-07-29 | 2016-12-21 | 珠海格力电器股份有限公司 | It is applied to temperature-detecting device and the detection method thereof of cooler compressor |
| CN109083832A (en) * | 2018-07-16 | 2018-12-25 | 滁州天陆泓机械有限公司 | Compressor assembly and its control method |
| CN110329235A (en) * | 2019-07-09 | 2019-10-15 | 浙江吉利控股集团有限公司 | A kind of method, apparatus and system monitoring vehicle mounted electric air compressor |
| CN110329235B (en) * | 2019-07-09 | 2021-05-14 | 浙江吉利控股集团有限公司 | Method, device and system for monitoring vehicle-mounted electric air compressor |
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| CN104533770B (en) | 2016-06-08 |
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Granted publication date: 20160608 Termination date: 20191126 |