CN102350402A - Control system of centrifugal oil purification device - Google Patents
Control system of centrifugal oil purification device Download PDFInfo
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- CN102350402A CN102350402A CN2011101480731A CN201110148073A CN102350402A CN 102350402 A CN102350402 A CN 102350402A CN 2011101480731 A CN2011101480731 A CN 2011101480731A CN 201110148073 A CN201110148073 A CN 201110148073A CN 102350402 A CN102350402 A CN 102350402A
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Abstract
The invention provides a control system of a centrifugal oil purification device, comprising an oil supply pump, a heater, a bypass valve and a centrifugal machine which are sequentially connected in series to a main oil line. The control system of the centrifugal oil purification device consists of an intelligent control module, a motor phase-sequence control module, a heating control module and an air exchanging and heat radiating module; control circuits of the oil supply pump, the heater, the bypass valve and the centrifugal machine are controlled by the intelligent control module; the intelligent control module is connected in series with one communication port to realize remote control; the oil supply pump and the centrifugal machine are controlled by a motor of the motor phase-sequence control module to steer correctly; the temperature of the heater is controlled precisely through the heating control module; and the control system is also connected in series with the air exchanging and heat radiating module. The control system of the centrifugal oil purification device has the remarkable advantages that: 1. the degree of automatic control is high, and remote control and state monitoring can be realized; 2. the oil supply pump and the centrifugal machine are kept to steer correctly; 3. the temperature control precision is high; and 4. the control system is good in ventilation and heat radiating effects and is safe and reliable.
Description
Technical field
This invention relates to a kind of control system, particularly the control system of centrifugal reconditioner.
Background technology
Centrifugal reconditioner is to spread to China from the middle and later periods nineties from developed countries, year existing application widely surplus in the of nearly ten, and particularly power industry is applied on the filtration treatment of power plant to steam turbine main fuel tank lubricating oil.The control system is the important component part of centrifugal reconditioner, and it is to guarantee centrifugal function under the nominal operation state, the key of the long-term highly effective and safe reliability service of centrifugal reconditioner.
Oil feed pump, centrifuge, heater, bypass valve etc. are key equipments in system, and they should be by rational flow sequence operation, detection, feedback, control.
Centrifugal reconditioner operation control flow should be: start the oil feed pump operation; When pump discharge oil pressure and heater outlet oil flow reaches specified the requirement; Can enough start the electric heater heating power supply; Oil-feed is heated; Can start simultaneously the centrifuge operation; After the bowl rotating speed is normal; Switch board instrument board reflection starting current drops to normal running current; Add water seal water this moment; Overflow water seal water at the centrifuge delivery port; Illustrate that water seal forms, stop the filled with water water shutoff, this stage centrifuge is at by-path running status; When oily temperature is heated to rated temperature, can start centrifuge oil-feed magnetic valve, closed the bypass magnetic valve simultaneously; Withdraw from bypass, the separating treatment of solid particle and water is carried out in the centrifuge oil-feed to oil; Solid particle is split on the outer wall of rotary drum, and water is separated to discharge casing endlessly.Continuing operation like this handles the online oil strain that constantly carries out.Oily phenomenon when centrifuge separates fault, occurs running, be higher than on the discharge outlet container in limited time when running oil mass, liquid-level switch action centrifuge bypass operation is no longer run oil and is reported to the police; When the low warning of pump discharge pressure, or when low warning of heater outlet oil flow, illustrate that oil-feed is not smooth; Pipeline pump intake filter screen possibly stop up; The heater case possibly not store full oil yet, and the pipeline valve is fault such as standard-sized sheet not, can not start the workflows such as operation and heater heating of centrifuge this moment; Heater failure is described when low alarm temperature or fails to start heater that can not start the operation and the centrifuge oil-feed of centrifuge simultaneously, centrifuge treating is in bypass condition.During the temperature controller temperature control, temperature is low when starting does not first report to the police, and after being heated to specified thermostat temperature, if temperature hangs down again, the not enough or heating system device fault of heater failure or temperature controller fault precision is described.
The control circuit of this kind equipment exists following not enough at present: oil feed pump, centrifuge and electric heater and centrifuge oil-feed/bypass magnetic valve etc. do not have the electrical interlocks of reasonable workflow for opening/stop form respectively; The signal that does not design sensors such as applying pressure, temperature, flow, liquid level feeds back each equipment running status, thereby realizes the chain logic of rational electrical control, makes operating personnel's operating difficulties, and automatic controlling level is low, and service life is short, and operating efficiency is lower.
At present this kind equipment oil feed pump, centrifuge can cause reversing when connecting power supply because of each; Some centrifugal reconditioner moves when using at the scene; There are many units in some power plants; And centrifugal reconditioner is shared; A period of time is at a sump oil strain; Another section period is at No. two sump oil strains, when the power phase that connects does not just cause oil feed pump, centrifuge counter-rotating simultaneously.Even break down, once there is the user bowl to be changeed pine and causes centrifuge bearing and rotating shaft to damage because of counter-rotating, bowl turn up 9510rpm, abnormally dangerous.
Viscosity after oil product is heated descends and constant being convenient to of water viscosity separated; Oil viscosity η descends because of temperature improves, and therefore separating rate Vc strengthens.So, and guarantee that the operation of heater long-term safety is extremely important to oil heating and reliable steady temperature.
The operation of this kind equipment electric heater at present, even pump stops suddenly, the oil in the fuel tank does not flow or does not store full oil, and heater can also work on, and causes oil overheated, even makes oily tired carbonization, and also owing to the heater surfaces load is big, heater was prone to cause thermal damage; The temperature control instrument of Cai Yonging drives heater grouping start and stop temperature control with the employing A.C. contactor simultaneously; Or with temperature controller PID adjusting driving controllable silicon; Move temperature control as noncontacting switch, the thermal inertia in the time of all can not as far as possible reducing constant temperature, contrast thermostat temperature value all has big relatively overtemperature, owes temperature; The constant temperature weak effect influences the centrifuge separative efficiency.
This kind equipment produces big heat because of long-term on-line operation during controllable silicon work at present, has only adopted an axial flow blower to ventilate in the cabinet, because the axial flow blower fault causes high temperature in the cabinet, instrument and controllable silicon damage in use for some time.
Summary of the invention
Goal of the invention: the control system that the purpose of this invention is to provide the centrifugal reconditioner that a kind of automatic controlling level is high, temperature-controlled precision is high, safe and reliable.
Technical scheme: a kind of control system of centrifugal reconditioner; Comprise the oil feed pump, heater, bypass valve and the centrifuge that are serially connected in successively in the working connection; For operating personnel are operated more easily; Realization automation control; Reach longer service life and higher operating efficiency; The control circuit of said oil feed pump, heater, bypass valve and centrifuge is through intelligent control module control; Said intelligent control module has adopted PLC control; According to the signal feedback of system equipment operational process and related sensor, realize automation control.
The object of the invention can also further be realized through following technical measures.
Can also feed back to the DCS system to relevant running status, or pass through the RS485 port of PLC, realize Long-distance Control and condition monitoring.
In order to prevent oil feed pump, centrifuge because possibly cause counter-rotating when connecting power supply again; Adopt motor phase sequence controller PR01 to detect control input power supply and whether satisfy turning to of centrifugal reconditioner oil feed pump drive motors and centrifuge drive motors, guarantee by set direction operation.
In order to improve the centrifuge separative efficiency; And guarantee heater long-term safety operation; Oil is heated and keeps reliable steady temperature is crucial; The control system has adopted intelligent temperature controller TCW to add controllable silicon three-phase phase shift trigger; Feed back to the three-phase phase shift trigger through thermal resistance PT100 temperature signal and control the controllable silicon KS angle of flow; Output is satisfied under this flow, and relatively design temperature and the actual temperature difference institute correspondence heating power of loading comes heated oils, has guaranteed the temperature constant requirement; Simultaneously when starting heating power supply, at first through flow switch or sensor, pressure switch or sensor detect the heater outlet flow, pump discharge pressure must satisfy specified requirement, otherwise will report to the police, could start heater when disappearing after alert and move.
In order to ensure the safety of system, adopted two axial flow blowers of the using and the reserved to ventilate, when in-cabinet temperature is high,, drives the immobilized spindle flow fan and ventilate, and report to the police through being installed in the temperature switch of switch board inside top, it is reliable to guarantee to ventilate.
Beneficial effect: the present invention compared with prior art, its remarkable advantage is: 1, automatic controlling level is high, and can realize Long-distance Control and condition monitoring; 2, can prevent that oil feed pump, centrifuge from causing counter-rotating because connect power supply again; 3, temperature-controlled precision is high; 4, result of ventilating heat dissipation is good safe and reliable.
Description of drawings
Fig. 1 is control principle figure of the present invention
The specific embodiment
Below in conjunction with accompanying drawing the present invention is described further.
As shown in the figure; A kind of control system of centrifugal reconditioner; Comprise the oil feed pump 1 that is serially connected in successively in the working connection; Heater 2; Bypass valve 3 and centrifuge 4; For operating personnel are operated more easily; Realization automation control; Reach longer service life and higher operating efficiency; Said oil feed pump 1; Heater 2; The control circuit of bypass valve 3 and centrifuge 4 receives the control of intelligent control module 5; Thereby realize the chain logic of rational electrical control; Said intelligent control module 5 has adopted PLC control; According to the signal feedback of system equipment operational process and related sensor, realize automation control.Can also feed back to DCS system or the RS485 port 6 through PLC to relevant running status, realize Long-distance Control and condition monitoring.
The object of the invention can also further be realized through following technical measures.
In order to prevent oil feed pump 1, centrifuge 4 because possibly cause counter-rotating when connecting power supply again; The control circuit of said oil feed pump 1 and centrifuge 4 is subjected to 7 controls of motor phase sequence control module; Said motor phase sequence control module 7 employing motor phase sequence controller PR01 detect control input power supply and whether satisfy turning to of centrifugal reconditioner oil feed pump 1 drive motors and centrifuge 4 drive motors, guarantee by set direction operation.
In order to improve centrifuge 4 separative efficiencies; And guarantee heater long-term safety operation; Oil is heated and keeps reliable steady temperature is crucial; The control circuit of heater 2 is subjected to heating control module 8 controls; Said heating control module 8 has adopted intelligent temperature controller TCW to add controllable silicon three-phase phase shift trigger; Feed back to the three-phase phase shift trigger through thermal resistance PT100 temperature signal and control the controllable silicon KS angle of flow; Output is satisfied under this flow; Relatively design temperature and the actual temperature difference institute correspondence heating power of loading comes heated oils, has guaranteed the temperature constant requirement; Simultaneously when starting heating power supply, at first through flow switch or sensor, pressure switch or sensor detect heater 2 rates of discharge, pump discharge pressure must satisfy specified requirement, otherwise will report to the police, could start heater when disappearing after alert and move; Temperature-controlled precision can reach positive and negative 2 ℃.
Safety in order to ensure system; An also parallelly connected ventilation radiating module 9 in The whole control system; Said 9 of moulds of ventilation heat radiation have adopted two axial flow blowers of the using and the reserved to ventilate; When in-cabinet temperature is high; Through the temperature sensor 10 that is installed in the switch board inside top; Drive the immobilized spindle flow fan and ventilate, and report to the police, it is reliable to guarantee to ventilate.
Claims (5)
1. the control system of a centrifugal reconditioner; Comprise the oil feed pump (1), heater (2), bypass valve (3) and the centrifuge (4) that are serially connected in successively in the working connection; It is characterized in that: the control circuit of said oil feed pump (1), heater (2), bypass valve (3) and centrifuge (4) is connected with the intelligent control module (5) of controlling each equipment operation according to the coherent signal and the flow process of feedback, and said intelligent control module (5) has adopted PLC control.
2. the control system of centrifugal reconditioner according to claim 1 is characterized in that: also comprise the port (6) of connecting with intelligent control module (5).
3. the control system of centrifugal reconditioner according to claim 1 is characterized in that: also comprise the motor phase sequence control module (7) that control oil feed pump (1) and centrifuge (4) turn to.
4. the control system of centrifugal reconditioner according to claim 1; It is characterized in that: the heating control module (8) that also comprises control heater (2); Said heating control module (8) has adopted intelligent temperature controller to add controllable silicon three-phase phase shift trigger, controls thyristor operating angle for the three-phase phase shift trigger through the resistance and temperature signal feedback.
5. the control system of centrifugal reconditioner according to claim 1; It is characterized in that: the also parallelly connected ventilation radiating module (9) of said control system; Said ventilation radiating module (9) adopts the two cooling fan structures of the using and the reserved formula, a subsequent use radiator fan series connection temperature sensor (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101480731A CN102350402A (en) | 2011-06-02 | 2011-06-02 | Control system of centrifugal oil purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101480731A CN102350402A (en) | 2011-06-02 | 2011-06-02 | Control system of centrifugal oil purification device |
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| CN102350402A true CN102350402A (en) | 2012-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011101480731A Pending CN102350402A (en) | 2011-06-02 | 2011-06-02 | Control system of centrifugal oil purification device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066562A (en) * | 2012-12-12 | 2013-04-24 | 镇江市科能电力设备有限公司 | Phase sequence protective device for centrifugal machine and motor |
| CN103143455A (en) * | 2012-12-12 | 2013-06-12 | 镇江市科能电力设备有限公司 | Oil leakage protection device for centrifugal machine |
| CN106000662A (en) * | 2016-05-13 | 2016-10-12 | 浙江轻机离心机制造有限公司 | Remote data monitoring system for centrifugal machine |
| CN108620241A (en) * | 2018-03-28 | 2018-10-09 | 安徽科利恩洁油环保设备有限公司 | Full-automatic fluid slagging-off seperator and its control method |
| CN109782979A (en) * | 2019-01-03 | 2019-05-21 | 北京三一智造科技有限公司 | The interactive interface display method and device of rotary drilling rig lubricating system |
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| US3954611A (en) * | 1975-01-29 | 1976-05-04 | Reedy Elvie L | Portable apparatus and method for purifying lubricating oil in various devices |
| WO1999032210A1 (en) * | 1997-12-19 | 1999-07-01 | Alfa Laval Moatti Snc | Assembly for automatic purification of a polluted fluid and implementing method |
| CN201493176U (en) * | 2009-09-03 | 2010-06-02 | 高震宇 | High-fine oil liquid purifying machine |
| CN201565155U (en) * | 2009-12-04 | 2010-09-01 | 江苏爱伊替科技工程有限公司 | Coalescence-separation oil purification system |
| CN201565158U (en) * | 2009-11-27 | 2010-09-01 | 江苏爱伊替科技工程有限公司 | Centrifugal oil purification system |
| CN202263654U (en) * | 2011-06-02 | 2012-06-06 | 江苏巴威工程技术股份有限公司 | Control system of centrifugal oil purifier |
-
2011
- 2011-06-02 CN CN2011101480731A patent/CN102350402A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3954611A (en) * | 1975-01-29 | 1976-05-04 | Reedy Elvie L | Portable apparatus and method for purifying lubricating oil in various devices |
| WO1999032210A1 (en) * | 1997-12-19 | 1999-07-01 | Alfa Laval Moatti Snc | Assembly for automatic purification of a polluted fluid and implementing method |
| CN201493176U (en) * | 2009-09-03 | 2010-06-02 | 高震宇 | High-fine oil liquid purifying machine |
| CN201565158U (en) * | 2009-11-27 | 2010-09-01 | 江苏爱伊替科技工程有限公司 | Centrifugal oil purification system |
| CN201565155U (en) * | 2009-12-04 | 2010-09-01 | 江苏爱伊替科技工程有限公司 | Coalescence-separation oil purification system |
| CN202263654U (en) * | 2011-06-02 | 2012-06-06 | 江苏巴威工程技术股份有限公司 | Control system of centrifugal oil purifier |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103066562A (en) * | 2012-12-12 | 2013-04-24 | 镇江市科能电力设备有限公司 | Phase sequence protective device for centrifugal machine and motor |
| CN103143455A (en) * | 2012-12-12 | 2013-06-12 | 镇江市科能电力设备有限公司 | Oil leakage protection device for centrifugal machine |
| CN106000662A (en) * | 2016-05-13 | 2016-10-12 | 浙江轻机离心机制造有限公司 | Remote data monitoring system for centrifugal machine |
| CN108620241A (en) * | 2018-03-28 | 2018-10-09 | 安徽科利恩洁油环保设备有限公司 | Full-automatic fluid slagging-off seperator and its control method |
| CN109782979A (en) * | 2019-01-03 | 2019-05-21 | 北京三一智造科技有限公司 | The interactive interface display method and device of rotary drilling rig lubricating system |
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Application publication date: 20120215 |