CN102878415A - Improved fan oil station electrical control system - Google Patents
Improved fan oil station electrical control system Download PDFInfo
- Publication number
- CN102878415A CN102878415A CN2012103877660A CN201210387766A CN102878415A CN 102878415 A CN102878415 A CN 102878415A CN 2012103877660 A CN2012103877660 A CN 2012103877660A CN 201210387766 A CN201210387766 A CN 201210387766A CN 102878415 A CN102878415 A CN 102878415A
- Authority
- CN
- China
- Prior art keywords
- petrol station
- power supply
- pump machine
- station pump
- control loop
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Control Of Multiple Motors (AREA)
Abstract
The invention particularly discloses an improved fan oil station electrical control system, which comprises a main loop and a secondary loop, wherein the main loop comprises a primary power supply circuit of an oil station pump; the secondary loop comprises a control loop of the oil station pump and an instrument-controlling instrument control loop; primary power supplies of the oil station pump in the main loop respectively supply power directly; phase-sequence relays are introduced to direct power supply ends of the primary power supplies of the oil station pump; second power supplies in the oil station pump control circuit in the secondary loop are respectively introduced by C-phase power supplies of the first power supply; and a two-position relay and a DCS (Distributed Control System) control point are arranged in the oil station pump control loop of the secondary loop.
Description
Technical field
The present invention relates to a kind of improved blower fan petrol station electric control system.
Background technique
Small-sized Lubricating-oil Station is mainly used in metallurgy, in the thin Oil Lubricating System of the machinery such as generating, and to retarder, induced draught fan, gas fan, the friction such as driving motor bearing position feed lubricant oil is the important component part of subsidiary engine equipment.Small-sized Lubricating-oil Station mainly is comprised of fuel tank, oil pump device, filter, column tube oil cooler, electric control cubicle, instrument panel, pipeline, valve etc., and the electric control system of the electric control cubicle heart of Lubricating-oil Station especially, power source, therefore, the quality of electric control system directly affects safety and stability and the effect of whole Lubricating-oil Station.The main existent defect of existing market general small-size Lubricating-oil Station electric control system:
1. major loop hidden danger
The existing market general small-size Lubricating-oil Station overwhelming majority once all design configurations dual power supply form to guarantee power supply reliability.Its double-power source is supplied with two motors and heater after switching circuit switches.At least through two-stage contact action connection, the switching controls loop that has also increases the input that the air sac type time relay guarantees standby power supply to power-switching control circuit.But the basic principle of control loop is to utilize the least possible components and parts to reach desirable effectiveness.Its switching circuit starts through multistage contact, must increase the hidden danger of loop breakpoint, and the air bag of air sac type relay is subjected to the impact of ambient temperature larger, and for example the time changes, and the phenomenon such as does not return.Therefore, if break down in the switching controls loop, even secondary power supply for subsequent use is normal, also will cause the whole pump machine of petrol station decompression, and then cause blower fan tripping operation, compressor emergency shutdown accident.
2. secondary circuit imperfection
Existing market general small-size Lubricating-oil Station control instrument instrument control secondary circuit merges with petrol station pump machine control secondary circuit, shares miniature transformer transformation output AC 220V power supply control in the electric control cubicle.Control instrument instrument component is installed on the petrol station body, be connected through cable with electric control cubicle, control instrument instrument component and mechanical pipeline one, running environment is complicated than electric control cubicle, if breaking down, control instrument instrument control loop will cause whole secondary circuit system dead electricity, same, although the pump machine control loop probability that breaks down is less in the electric control cubicle, but one has fault, also will cause whole secondary circuit system dead electricity.Moreover, if miniature transformer breaks down, also will cause whole secondary circuit system dead electricity.
3, the supervision of petrol station pump electromechanical source disappearance
In the new power plant construction, the MCC combined type screen cabinet is widely applied at present.MCC drawer type power supply components and parts are concentrated, and occupy little space.But all power plant all occurred bad connection in utilization, caused motor primary power source phase shortage phenomenon.As everyone knows, the motor power phase shortage, pressure drop reduces, electric current is less during empty load of motor, can not cause than macrolesion motor, when load is larger, will inevitably cause that the motor feels hot because electric current increases suddenly, even present best F level electrical machine insulation, the time that motor can turn round is also limited, must cause motor to damage.
4, without the decompression self-starting function
Described before combining, the whole pump machine of petrol station decompression will cause the blower fan tripping operation, the compressor emergency shutdown accident.Therefore, quick self-starting seems particularly important after the Lubricating-oil Station decompression, and makes a general survey of present Lubricating-oil Station data, and the Lubricating-oil Station of domestic each enterprise's production application not yet finds to have the Lubricating-oil Station electric control system of decompression self-starting function.
5, interlock hidden danger
Interlocking starts after multistage contact is connected between the pump machine, and hidden danger is more.The bad connection of arbitrary interlock circuit contact or its starting relay poor starting damage etc. all will cause whole interlock circuit to lose efficacy, and during fault, cause stand by pump in time to drop into, and consequence is the blower fan tripping operation, and then unit is non-stops.
6, DCS is far controlled function and DCS alarm point imperfection
The DCS control far away of the small-sized Lubricating-oil Station of a present domestic part only is directed to and starts the loop, and the two pumps machine in standing can't be controlled respectively, and three phases six of Datang Huang Island Power Generation Corporation Ltd. strong wind machine oil station also possesses this defective.Alarm point is not on the spot all introduced DCS, makes operations staff's complex operation and supervision have the blind area, and electric control cubicle could check whole alarm points extremely on the spot.
Summary of the invention
The shortcoming that exists for solving prior art the invention provides a kind of improved blower fan petrol station electric control system.
The technical solution used in the present invention is as follows:
A kind of improved blower fan petrol station electric control system, comprise major loop and secondary circuit, described major loop comprises power supply circuits of petrol station pump machine, described secondary circuit comprises petrol station pump machine control loop and control instrument instrument control loop, described power supply circuits are directly powered by power supply, introduce the phase sequence supervisory relay at the feeder ear of described power supply circuits; Described petrol station pump machine control loop is powered respectively with control instrument instrument control loop, also is provided with two-position relay and DCS system control point in petrol station pump machine control loop.
Described petrol station pump machine comprises petrol station pump machine I and petrol station pump machine II, the power supply of power supply circuits of described petrol station pump machine I is attracted by boiler MCC end, the power supply boiler security personnel MCC end of power supply circuits of described petrol station pump machine II attracts, be respectively equipped with power supply at the power supply leading-in end of power supply circuits of described petrol station pump machine I and petrol station pump machine II and input empty opening apparatus, be respectively equipped with power supply at the power output end of power supply circuits of petrol station pump machine I and petrol station pump machine II and export empty opening apparatus.
Described petrol station pump machine control loop comprises the control loop of petrol station pump machine I and the control loop of petrol station pump machine II, and the control loop power supply of described petrol station pump machine I is introduced by the C phase power supply of boiler MCC end power supply; The control loop power supply of described petrol station pump machine II is introduced by the C phase power supply of boiler security personnel MCC end power supply.
The power supply of described control instrument instrument control loop comprises major and minor power supply, is introduced by power supply circuits of petrol station pump machine I and power supply circuits of petrol station pump machine II respectively.
Be respectively equipped with power supply at the leading-in end of described major and minor power supply and input empty opening apparatus, be respectively equipped with a contactless contactor in the control circuit of major and minor power supply, the coil of the contactless contactor of main power circuit is located in the secondary power supply circuit, and the coil of the contactless contactor of secondary power supply circuit is located in the main power circuit.
Described petrol station pump machine control loop be provided with a distant place on the spot throw over switch and local operation button.
Described control instrument instrument control loop the inside is provided with the power monitoring relay, its normally-closed contact access DCS system, and its normally opened contact is introduced the control loop of petrol station pump machine.
The normally-closed contact of described phase sequence supervisory relay is introduced the warning circuit of DCS system.
The main contact of described two-position relay links to each other with the DCS system control point of petrol station pump machine control loop, and auxiliary contact indicate the loop to link to each other with Contactor Starting loop, the startup indication loop of petrol station pump machine control loop with stopping respectively.
Control loop the inside in described petrol station pump machine I is provided with the interlock switch I, and the auxiliary contact of interlock switch I are located in the control loop of petrol station pump machine II; Control loop the inside in described petrol station pump machine II is provided with the interlock switch II, and the auxiliary contact of interlock switch II are located in the control loop of petrol station pump machine I.
Described DCS system is Distributed Control System.
The invention has the beneficial effects as follows: by rectification, the electric control system of whole Lubricating-oil Station is obtaining very big lifting aspect Security, stability and the effect, possessed following advantage:
1, major loop hidden danger: because having simplified the switching controls loop, cancelled the air sac type time relay, the probability that switching circuit is broken down reduces.Supply with an ac power supply of motor rotation and supply with through the pump electromechanical device control loop of redesign, avoided making the stall of motor decompression because of primary power supply switching circuit fault.
2, secondary circuit hidden danger: two pumps is independent separately in the pump machine control loop electric control cubicle, mutually simplifies without impact and loop, is convenient to maintenance test.To control the control of instrument instrument circuit and the isolation of pump machine control loop, avoid with the comprehensive interference that forms of front loop and the drawback of loop complex maintenance difficulty.
3, the supervision of primary power source disappearance hidden danger: the phase sequence supervisory relay of creationary newly-increased reliable performance effectively monitors the motor damage of having avoided phase shortage to cause.
4, without decompression self-starting function hidden danger: set up two-position relay in the newly-designed petrol station pump machine control loop, state characteristic when utilizing its outage back contact to keep former startup, self-starting after the assurance decompression.Effectively improve safe and stable equipment operation.
5, interlock hidden danger: interlock circuit simplifies but function is constant, makes it the safety and stability Reliability Enhancement.
6, function and the road Perfect in shape and function of DCS system alarm circuit are far controlled in the DCS system, and petrol station pump machine can be controlled respectively by the DCS system in central station of floating dock, reduce operations staff's misoperation.All on the spot alarm points are introduced the DCS microcomputer show, make the operations staff monitor convenient convenience.
Description of drawings
Fig. 1 main circuit diagram 1 of the present invention;
Fig. 2 secondary circuit partial circuit of the present invention figure;
Partial circuit figure in Fig. 3 DCS of the present invention system;
Partial circuit figure in Fig. 4 DCS of the present invention system;
The control circuit of Fig. 5 petrol station pump machine I;
The control circuit of Fig. 6 petrol station pump machine II;
Embodiment
In the components and parts circuit shown in Fig. 1,2,3,4,5,6, electrical action principle and the effect of important configuration original paper:
1. configuration element:
1.1QF1, QF2: power supply is inputted empty opening apparatus, receives from upper level MCC cabinet and exchanges primary power source.QF1 links to each other with petrol station pump machine I power supply, and QF2 links to each other with petrol station pump machine II power supply;
1.2 QF3, QF4: power supply is inputted empty opening apparatus, the power supply of the control instrument instrument power switching circuit of its expression is inputted empty opening apparatus.
1.3FU1, FU2: power supply is exported empty opening apparatus; FU1 exports empty opening apparatus as petrol station pump machine I power supply, and FU2 exports empty opening apparatus as petrol station pump machine II power supply.Disconnect the empty opening apparatus of FU1, FU2 when also having an important function to be exactly the motor control loop fault, can carry out the transmission inspection to secondary circuit separately;
1.4FU3, FU4: power supply is inputted empty opening apparatus; The empty opening apparatus of input side of electric control cubicle miniature transformer BT, BT damages when preventing fault;
1.5:FU5: power supply is exported empty opening apparatus; The empty opening apparatus of electric control cubicle miniature transformer BT secondary outlet side;
1.6:BT: transformer; The electric control cubicle miniature transformer is once inputted AC380V, secondary output AV220V;
1.7:1C, 2C: contactless contactor; The contactless contactor of 1C petrol station pump machine I, the contactless contactor of 2C petrol station pump machine II;
1.8:KM1, KM2: contactless contactor; They are respectively AC380V ac power supply switching circuit contactless contactors;
1.9:KM5: contactless contactor; Electric heater ac power supply circuit contactless contactor;
1.10:JJ: the power monitoring relay; It is control instrument instrument control loop power monitoring relay.Its break contact access DCS system, monitor warning as control instrument instrument control loop power supply dead electricity, its normally opened contact 1, normally opened contact 2 are introduced in electric control cubicle petrol station pump machine I, the petrol station pump machine II control interlock circuit, disconnect " low fuel pressure " interlock circuit during as control instrument instrument control loop power supply dead electricity.
1.11XV1, XV2: the phase sequence supervisory relay, be installed on electric control cubicle, whether the monitoring motor primary power source defective, the protection Oil pump electrical machinery;
1.12FR1, FR2: the thermocouple protector, its break contact is connected to the control loop of petrol station pump machine, prevents petrol station pump machine I, petrol station pump machine II overload, the protection motor.The warning circuit of normally opened contact access DCS system sends warning during overload;
1.13 1ST: control instrument thermal switch;
1.14 SP0, SP1, SP2: liquid level pressure switch;
1.15 SL1, SL2: control instrument pressure switch;
1.16 KA6, KA7, KA9, KA10, KA10, KA11, KA12, KA13: pressure switch expansion relay; Be installed in the electric control cubicle;
1.17 1CK, 2CK: the throw over switch of a distant place/on the spot; They are installed on petrol station pump machine I, petrol station pump machine II control loop in the electric control cubicle;
1.18 1KK, 2KK: interlock switch; They are installed on the petrol station pump machine I in the electric control cubicle, the control loop interlock switch of petrol station pump machine II;
1.19 1SWJ, 2SWJ: two-position relay is used for the self-starting of motor decompression.
1.20 M1, M2: petrol station pump machine I, petrol station pump machine II.
1.21 115,116: normally opened contact; A1, the contactor of A2:1C contactless contactor;
1.22 1ZK, 2ZK represent respectively switch; The 1HA switch knob; The 2HA switch knob; H1, H2 tutorial light;
The electrical action principle
2.1 the major and minor electrical source exchange of the power supply loop of control instrument instrument control loop
Power turn-on is inputted empty opening apparatus QF1, QF2, and power turn-on is inputted empty opening apparatus QF3, utilizes the coil KM1 of the normally closed connection contactless contactor of contactless contactor KM2 KM1, makes its excitation, and primary power supply tutorial light H1 is bright on the electric control cubicle, and primary power supply is sent into; If mains power failure connects the coil KM1 loss of excitation of tentaculum K switch M1, its break contact returns, and instantaneous starting connects the coil KM2 of tentaculum K switch M2, makes its excitation, sends into secondary power supply; Vice versa.
2.2 electric heater start and stop in the control instrument instrument control loop
Power turn-on is inputted empty opening apparatus FU3, when the control instrument thermal switch 1ST of oil temperature pressure reaches " oil temperature is low " CLV ceiling limit value, pressure switch expansion relay K A6 action, control instrument pressure switch SL1 does not reach limit value, pressure switch expansion relay K A12 is failure to actuate, in electric control cubicle electric heater start-stop button SA2 is put co-bit, contactless contactor KM5 excitation, electric heater starts.Start-stop button SA2 puts and jumps the position, the electric heater tripping operation.The electric heater starting state, if when oily temperature controlling instrument thermal switch 1ST reaches " oil temperature is high " CLV ceiling limit value, pressure switch expansion relay K A7 action, electric heater tripping operation.Control instrument pressure switch SL1 reaches the low limit value of liquid level, liquid level low-pressure switch expansion relay K A12 action, electric heater tripping operation.
2.3 the control loop of petrol station pump machine
1) normal start and stop
1ZK closes a switch; a distant place/throw over switch 1CK places with regard to position on the spot; interlock switch 1KK places rest position; by switch knob 1HA on the electric control cubicle door; two-position relay 1SWJ closing coil excitation, two-position relay 1SWJ action, its normally opened contact 115,116 closures; the contactor excitation actuating of contactless contactor 1C during by thermocouple protector FR1 normally closed, petrol station pump machine I M1 gets electric operation.By trip button 1TA on the electric control cubicle door, the breaking coil excitation of two-position relay 1SWJ, the 1SWJ action, its normally opened contact 115,116 disconnects, and makes the contactor A1 of contactless contactor 1C, A2 excitation loss of excitation, the stall of petrol station pump machine I M1 dead electricity.A distant place/throw over switch 1CK places remote location on the spot, the combined floodgate of DCS system, the same on the spot state of trip operation program.
2) dead electricity self-starting
If petrol station pump machine I M1 the low dead electricity of transience voltage occurs at running position, two-position relay 1SWJ still keeps its state when the closing position, normally opened contact 115,116 closures.When the voltage recovery, the instantaneous contactor A1 that makes contactless contactor 1C, the A2 excitation guarantees that motor runs well.
3) interlock circuit
The operation of petrol station pump machine I; interlock switch 1KK places and removes the position; interlock switch 2KK places interlocking position; 3,4 of interlock switch 2KK connects; cause petrol station pump machine I M1 tripping operation if thermocouple protector FR1 overload action or other faults occur, the contactor loss of excitation of contactless contactor 1C returns, its contactless contactor 1C break contact return closure; the instantaneous 2SWJ excitation actuating that makes, starting contactor switch 2C contactor make petrol station pump machine II interlocked startup for subsequent use.
If the low fuel pressure of petrol station pump machine I M1 emerged in operation, liquid level pressure switch SP1 reaches the low fuel pressure limit value and returns, and pressure switch expansion relay K A10 ' loss of excitation returns, and the normally closed point of pressure switch expansion relay K A10 ' is connected instantaneous starting petrol station pump for subsequent use machine II M2.When liquid level pressure switch SP0 reaches the action of oil pressure normal limit, pressure switch expansion relay K A9 excitation actuating, by 1,2 contacts of interlock switch 2KK and the former work petrol station of the normally opened contact tripping pump machine I M1 of contactless contactor 2C, make oil pressure remain at normally-pressured neighbor.
Rectification is made latter two petrol station pump machine primary power source and is attracted respectively by boiler MCC section, boiler security personnel MCC section, petrol station pump machine I M1 is directly powered by boiler MCC section, petrol station pump machine II M2 is directly powered by boiler security personnel MCC section, and cancellation is through the primary power source drawback that power supply causes after switching.Switching circuit control loop cancellation air sac type relay and medium tache contact are directly started by the switching contactor auxiliary contact and connect.
Rectification is made rear control instrument instrument control loop and is powered after the transformer transformation to the electric control cubicle behind the major-minor electrical source exchange.The power supply of two pump petrol stations of petrol station two pumps machine pump machine is introduced by introducing separately MCC section C phase power supply, sets up the small size air opening apparatus, to pump machine control loop redesign distribution, set up on the spot distant place throw over switch, the local operation button is realized on the spot push-botton operation, and distant place DCS operates respectively.Control instrument instrument control loop and two petrol station pump machine control loops are independent separately, are independent of each other.
In the pump machine control loop of redesign, increases two-position relay newly after rectifying and improving, state characteristic when utilizing its outage back contact to keep former startup, self-starting after the assurance decompression.
Rectification is made the electric hard interlocking in rear loop and is directly started by the contactor contact.The oil pressure interlocking is directly by control instrument low fuel pressure contact expansion relay tip interlocked startup.When low fuel pressure, the stand by pump that directly links is when oil pressure is high, by the interlock circuit former working pump that trips.
Lay newly-increased control cables, newly-increased DCS control point is controlled separately electric control cubicle two pumps machine.All on the spot alarm point is introduced the DCS microcomputer show, the operations staff is operated and monitor convenient convenience.
Claims (10)
1. improved blower fan petrol station electric control system, comprise major loop and secondary circuit, described major loop comprises power supply circuits of petrol station pump machine, described secondary circuit comprises petrol station pump machine control loop and control instrument instrument control loop, it is characterized in that: described power supply circuits are directly powered by power supply, introduce the phase sequence supervisory relay at the feeder ear of described power supply circuits; Described petrol station pump machine control loop is powered respectively with control instrument instrument control loop, also is provided with two-position relay and DCS system control point in petrol station pump machine control loop.
2. a kind of improved blower fan petrol station electric control system as claimed in claim 1, it is characterized in that: described petrol station pump machine comprises petrol station pump machine I and petrol station pump machine II, the power supply of power supply circuits of described petrol station pump machine I is attracted by boiler MCC end, the power supply boiler security personnel MCC end of power supply circuits of described petrol station pump machine II attracts, be respectively equipped with power supply at the power supply leading-in end of power supply circuits of described petrol station pump machine I and petrol station pump machine II and input empty opening apparatus, be respectively equipped with power supply at the power output end of power supply circuits of petrol station pump machine I and petrol station pump machine II and export empty opening apparatus.
3. a kind of improved blower fan petrol station electric control system as claimed in claim 2, it is characterized in that: described petrol station pump machine control loop comprises the control loop of petrol station pump machine I and the control loop of petrol station pump machine II, and the control loop power supply of described petrol station pump machine I is introduced by the C phase power supply of boiler MCC end power supply; The control loop power supply of described petrol station pump machine II is introduced by the C phase power supply of boiler security personnel MCC end power supply.
4. a kind of improved blower fan petrol station electric control system as claimed in claim 1, it is characterized in that: the power supply of described control instrument instrument control loop comprises major and minor power supply, is introduced by power supply circuits of petrol station pump machine I and power supply circuits of petrol station pump machine II respectively.
5. a kind of improved blower fan petrol station electric control system as claimed in claim 4, it is characterized in that: be respectively equipped with power supply at the leading-in end of described major and minor power supply and input empty opening apparatus, be respectively equipped with a contactless contactor in the control circuit of major and minor power supply, the coil of the contactless contactor of main power circuit is located in the secondary power supply circuit, and the coil of the contactless contactor of secondary power supply circuit is located in the main power circuit.
6. a kind of improved blower fan petrol station electric control system as claimed in claim 1 is characterized in that: described petrol station pump machine control loop be provided with a distant place on the spot throw over switch and local operation button.
7. a kind of improved blower fan petrol station electric control system as claimed in claim 1, it is characterized in that: described control instrument instrument control loop the inside is provided with the power monitoring relay, its normally-closed contact access DCS system, its normally opened contact is introduced the control loop of petrol station pump machine.
8. a kind of improved blower fan petrol station electric control system as claimed in claim 1 is characterized in that: the warning circuit of the normally-closed contact introducing DCS system of described phase sequence supervisory relay.
9. a kind of improved blower fan petrol station electric control system as claimed in claim 1, it is characterized in that: the main contact of described two-position relay links to each other with the DCS system control point of petrol station pump machine control loop, and auxiliary contact indicate the loop to link to each other with Contactor Starting loop, the startup indication loop of petrol station pump machine control loop with stopping respectively.
10. a kind of improved blower fan petrol station electric control system as claimed in claim 2 is characterized in that: the control loop the inside in described petrol station pump machine I is provided with the interlock switch I, and the auxiliary contact of interlock switch I are located in the control loop of petrol station pump machine II; Control loop the inside in described petrol station pump machine II is provided with the interlock switch II, and the auxiliary contact of interlock switch II are located in the control loop of petrol station pump machine I.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210387766.0A CN102878415B (en) | 2012-10-11 | 2012-10-11 | Improved fan oil station electrical control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210387766.0A CN102878415B (en) | 2012-10-11 | 2012-10-11 | Improved fan oil station electrical control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102878415A true CN102878415A (en) | 2013-01-16 |
| CN102878415B CN102878415B (en) | 2014-11-26 |
Family
ID=47479857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210387766.0A Active CN102878415B (en) | 2012-10-11 | 2012-10-11 | Improved fan oil station electrical control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102878415B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333124A (en) * | 2014-11-25 | 2015-02-04 | 济南重工股份有限公司 | Double-power-supply automatic switching circuit of high-low pressure thin-oil station |
| CN106877319A (en) * | 2017-04-05 | 2017-06-20 | 韩守相 | A kind of fan oil station power connection structure |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783199A (en) * | 1970-06-24 | 1974-01-01 | Lanier Electronic Lab Inc | Switching apparatus for selectively interconnecting oiltation machines and stations |
| JPH03148799A (en) * | 1989-11-02 | 1991-06-25 | Tokyo Electric Co Ltd | Power source controller for sales data processor for oil station |
| CN201207583Y (en) * | 2008-04-25 | 2009-03-11 | 济南重工股份有限公司 | Power supply circuit for high-low voltage rare oil station |
| CN201557068U (en) * | 2009-09-15 | 2010-08-18 | 西安陕鼓动力股份有限公司 | Control device of electromotor lift-up oil pump for fan |
| CN202435290U (en) * | 2011-12-16 | 2012-09-12 | 济南重工股份有限公司 | Power supply control circuit for high and low pressure thin oil station of coal mill |
| CN202884446U (en) * | 2012-10-11 | 2013-04-17 | 大唐黄岛发电有限责任公司 | Improved draught fan oil station electrical control system |
-
2012
- 2012-10-11 CN CN201210387766.0A patent/CN102878415B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783199A (en) * | 1970-06-24 | 1974-01-01 | Lanier Electronic Lab Inc | Switching apparatus for selectively interconnecting oiltation machines and stations |
| JPH03148799A (en) * | 1989-11-02 | 1991-06-25 | Tokyo Electric Co Ltd | Power source controller for sales data processor for oil station |
| CN201207583Y (en) * | 2008-04-25 | 2009-03-11 | 济南重工股份有限公司 | Power supply circuit for high-low voltage rare oil station |
| CN201557068U (en) * | 2009-09-15 | 2010-08-18 | 西安陕鼓动力股份有限公司 | Control device of electromotor lift-up oil pump for fan |
| CN202435290U (en) * | 2011-12-16 | 2012-09-12 | 济南重工股份有限公司 | Power supply control circuit for high and low pressure thin oil station of coal mill |
| CN202884446U (en) * | 2012-10-11 | 2013-04-17 | 大唐黄岛发电有限责任公司 | Improved draught fan oil station electrical control system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104333124A (en) * | 2014-11-25 | 2015-02-04 | 济南重工股份有限公司 | Double-power-supply automatic switching circuit of high-low pressure thin-oil station |
| CN104333124B (en) * | 2014-11-25 | 2016-05-25 | 济南重工股份有限公司 | A kind of dual power supply of high-low pressure Lubricating-oil Station is hauled oneself willingly into circuit |
| CN106877319A (en) * | 2017-04-05 | 2017-06-20 | 韩守相 | A kind of fan oil station power connection structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102878415B (en) | 2014-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202435320U (en) | Protection circuit of soft starter | |
| CN104917289A (en) | Automatic switching method for emergency power supply and two-way working power supplies of diesel generator | |
| CN108873832A (en) | A kind of flogic system and device of generator failure intertripping stator cooling water pump | |
| CN110474595A (en) | A kind of air blower main oil pump control switching circuit and booting, method for handover control | |
| CN203310970U (en) | 10-35KV circuit breaker opening and closing operation box | |
| CN203301225U (en) | Control device based on security-section interlocking self-switchover of gas-steam combined unit | |
| CN102878415B (en) | Improved fan oil station electrical control system | |
| CN206195453U (en) | Million units do not have high -pressure stand -by power supply's quick recovering start -up system | |
| CN104715972B (en) | A kind of automatic change-over electric appliance with duplicate | |
| CN202884446U (en) | Improved draught fan oil station electrical control system | |
| CN210536349U (en) | Full-automatic uninterrupted power supply dual-power supply system | |
| CN201557068U (en) | Control device of electromotor lift-up oil pump for fan | |
| CN205901423U (en) | Contactor type dual -power -supply switching device with wrong looks, open -phase protection function | |
| CN203871919U (en) | Fast switching system of power sources | |
| CN201118515Y (en) | Multi-shift control adjustable three phase asynchronous electromotor for oil drawer | |
| CN102868214A (en) | utomatic standby power supply switching box in small water power station | |
| CN204304453U (en) | A kind of interlock protection structure of water-cooling type SVG equipment | |
| CN104631541A (en) | High-power high-voltage motor safe operation protective system of electric hydraulic excavator | |
| CN210577762U (en) | Strong current control detection system of turbine generator | |
| CN110544980A (en) | full-automatic uninterrupted power supply dual-power supply system | |
| CN206259268U (en) | A kind of energy storage control loop of follow-on hydraulic spring grease cup breaker | |
| CN207652133U (en) | The dual power supply automatic switching device of electric spray type generating set and alternating current | |
| CN205960787U (en) | Fan oil station power loop control device | |
| CN210490469U (en) | Power supply loop of oil station for draught fan of unit | |
| CN110571762A (en) | Strong current control detection system of turbine generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |