CN211556976U - Lubricating oil system with dual power supply switching control loop - Google Patents
Lubricating oil system with dual power supply switching control loop Download PDFInfo
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- CN211556976U CN211556976U CN202020483371.0U CN202020483371U CN211556976U CN 211556976 U CN211556976 U CN 211556976U CN 202020483371 U CN202020483371 U CN 202020483371U CN 211556976 U CN211556976 U CN 211556976U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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Abstract
The utility model discloses a lubricating oil system with dual power supply switching control circuit, which relates to the technical field of lubricating systems and aims to solve the technical problem that the lubricating oil can not be supplied due to power failure in the lubricating process of the existing lubricating pump station, so that the oil supply pressure is too low, and the main machine equipment to be lubricated is damaged; a main power supply detection device for outputting a power supply signal is coupled in the main power supply, and a main control loop controlled by the main power supply detection device is coupled in the main power supply; the standby power supply is coupled with a standby control loop which is controlled by the main control loop so as to connect the standby power supply loop into the oil pump power supply loop or disconnect the standby power supply loop from the oil pump power supply loop. The effects of automatically detecting the fault of the power supply circuit and automatically switching the standby power supply are achieved.
Description
Technical Field
The utility model belongs to the technical field of lubricating system's technique and specifically relates to a lubricating oil system with dual supply switching control circuit is related to.
Background
The steam turbine is also called as a steam turbine engine, and is a rotary steam power device.A high-temperature high-pressure steam passes through a fixed nozzle to become an accelerated airflow and then is sprayed onto blades, so that a rotor provided with blade rows rotates, and simultaneously, the rotor does work outwards. Steam turbines are the main equipment of modern thermal power plants, and are also used in the metallurgical industry, chemical industry and ship power plants. In the working process of the steam turbine, components such as a sliding bearing, a gear transmission case, a speed regulator and the like on a main shaft of the steam turbine are required to be continuously lubricated so as to ensure the safe and stable operation of the steam turbine.
The prior Chinese patent with the publication number of CN206738913U discloses a lubricating oil station, which comprises a station body, an oil storage tank, a heat preservation oil tank and an oil return tank, wherein the oil storage tank is arranged in the station body, the oil return tank is arranged on the other side in the station body, the horizontal position of the oil return tank is higher than the oil storage tank, the heat preservation oil tank is arranged above the oil storage tank and the oil return tank, an oil suction pump I is arranged above the oil storage tank and is connected with a filter through a pipeline, a one-way valve is arranged above the filter, a cooler is arranged above the one-way valve, the pipeline is arranged in the heat preservation oil tank, a pressure sensor and a safety valve are arranged on a pipeline II, a pressure display meter is arranged above the pressure sensor, an oil return port is connected above one side of the oil. The utility model discloses automatic constant temperature lubricating oil automated control best lubrication temperature effectively protects equipment spare part, saves artifical time of heating and increases availability factor.
However, in the process of lubrication, the conventional lubrication pump station often fails to supply lubricating oil due to power failure, so that the oil supply pressure is too low, and the host equipment to be lubricated is damaged, so that improvement is needed.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a lubricating oil system with dual power supply switching control circuit, it has the advantage of automated inspection supply circuit trouble and automatic switch-over stand-by power supply.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a lubricating oil system with a dual-power switching control loop comprises an oil pump power supply loop, wherein a main power supply is coupled with the oil pump power supply loop, and a standby power supply is connected with a connection point of the oil pump power supply loop and the main power supply; a main power supply detection device for detecting the power supply state of the main power supply and outputting a power supply signal is coupled in the main power supply, and a main control loop which is controlled by the power supply signal to control the main power supply to be disconnected from the oil pump power supply loop and output a main control signal is coupled in the main power supply; the standby power supply is coupled with a standby control loop which is controlled by a main control signal so as to connect the standby power supply loop into the oil pump power supply loop or disconnect the standby power supply loop from the oil pump power supply loop.
By adopting the technical scheme, when the main power supply fails or breaks down, the normally open contact of the main power supply detection device is disconnected to control the main control loop to lose power so as to control the main power supply to be disconnected from the oil pump power supply loop and control the standby power supply to be connected into the oil pump power supply loop; the main power supply can be switched back after being recovered, so that the power supply of the oil pump is ensured; further, the continuous output of the oil pump is ensured, and the insufficient oil supply caused by the power failure of the oil pump is reduced; on the other hand, a plurality of intermediate relays and alternating-current contactors in the main control loop and the standby control loop prolong the switching time, so that the standby power supply is switched on after the main power supply is completely disconnected, and the damage caused by the overload of the oil pump is reduced.
The utility model discloses further set up to: the standby control loop comprises a standby display unit for displaying the working state of the standby power supply.
Through adopting above-mentioned technical scheme, reserve display element shows reserve power supply's operating condition to can remind operating personnel in time to overhaul when reserve power supply trouble.
The utility model discloses further set up to: the main control loop comprises a main display unit for displaying the working state of the main control loop.
Through adopting above-mentioned technical scheme, main display element can show whether main control circuit works to can judge that oil pump power supply circuit supplies power by which power.
The utility model discloses further set up to: and the standby power supply is coupled with a standby power supply detection device which is used for detecting the power supply state of the standby power supply and outputting a standby power supply signal.
Through adopting above-mentioned technical scheme, the setting of reserve power supply detection device is convenient for detect the operating condition of reserve power supply and transmit for the DCS system to can report to the police when reserve power supply trouble, remind operating personnel in time to overhaul.
The utility model discloses further set up to: and the oil pump power supply loop is coupled with an oil pump power supply detection device which is used for detecting the power supply state of the oil pump and giving an alarm when the oil pump is under-voltage.
Through adopting above-mentioned technical scheme, oil pump power supply detection device can detect the input voltage of oil pump to in time remind operating personnel to overhaul the trouble when the oil pump is under-voltage.
The utility model discloses further set up to: the main power supply and the standby power supply are two different buses of a power plant or the standby power supply is a UPS power supply.
Through adopting above-mentioned technical scheme, main power supply and reserve power supply adopt two different generating lines of power plant or the setting that reserve power supply adopted the UPS power makes main power supply and reserve power supply can independent work to reduce the probability that the problem appears simultaneously.
The utility model discloses further set up to: the main power supply detection device, the standby power supply detection device and the oil pump power supply detection device are all control relays.
Through adopting above-mentioned technical scheme, the setting of control relay is convenient for inspect the voltage to trigger switch when being less than the default, thereby provide sensitive reaction, guaranteed the steady operation of oil pump.
To sum up, the beneficial effects of the utility model are that:
1. the main power supply, the standby power supply, the main power supply detection device, the main control loop and the standby control loop are matched, so that the effect of conveniently switching to the standby power supply to supply power to the oil pump when the main power supply fails to work so as to ensure the operation of the oil pump is achieved;
2. the technology that the standby display unit is matched with the standby power supply detection device is adopted, so that the effects of conveniently detecting the working state of the standby power supply and alarming when the standby power supply is abnormal are achieved.
Drawings
FIG. 1 is a circuit diagram of an oil pump power supply circuit in an embodiment;
FIG. 2 is a circuit diagram of a lubricating oil system with a dual power switching control loop in an embodiment.
In the figure: 1. an oil pump power supply loop; 11. an oil pump power supply detection device; 2. a main power supply; 21. a main power supply detection device; 22. a main control loop; 221. a main display unit; 3. a standby power supply; 31. a standby control loop; 311. a standby display unit; 32. spare power supply detection device.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
a lubricating oil system with a dual power supply switching control loop refers to FIG. 1, and comprises an oil pump power supply loop 1, wherein the oil pump power supply loop 1 is coupled with an oil pump power supply detection device 11 for detecting the power supply state of an oil pump and giving an alarm under undervoltage, the oil pump power supply detection device 11 is a voltage type control relay, and the type of the voltage type control relay is a WDS335T three-phase voltage monitoring relay; the oil pump power supply detection device 11 is connected to the DCS system, and the DCS system is provided with an alarm device, so that automatic alarm can be given when the oil pump is under-pressure.
Referring to fig. 1 and 2, a main power supply 2 is coupled to an oil pump power supply loop 1, and a standby power supply 3 is connected to a connection point of the oil pump power supply loop 1 and the main power supply 2; the backup power supply 3 may be two power plant lines of a bus different from the main power supply 2, or may be a UPS power supply, and the present embodiment is preferably two power plant lines of a bus different from the main power supply 2.
A backup power supply detection device 32 for detecting a power supply state of the backup power supply 3 and outputting a backup power supply signal is coupled to the backup power supply 3, and the backup power supply detection device 32 is also a voltage-type control relay, whose type is a WDS335T three-phase voltage monitoring relay. The backup power supply detection device 32 is also connected to the DCS system and gives an alarm when the backup power supply 3 fails.
A main power supply detection device 21 for detecting a power supply state of the main power supply 2 and outputting a main power supply signal is coupled to the main power supply 2, and the main power supply detection device 21 is a voltage-type control relay whose type is a WDS335T three-phase voltage monitoring relay. A main control loop 22 which is controlled by a power supply signal to control the main power supply 2 to be disconnected from the oil pump power supply loop 1 and output a main control signal is coupled in the main power supply 2; the normally open contact of the main power supply detection device 21 is connected in series in the main control loop 22, the backup power supply 3 is coupled with a backup control loop 31 controlled by a main control signal to switch the backup power supply loop into the oil pump power supply loop 1 or to switch the backup power supply loop out of the oil pump power supply loop 1, and the normally open contact of the backup power supply detection device 32 is connected in series in the backup control loop 31. The normally open contact of the main power supply detection device 21 is connected in series in the main control loop 22, and when the main power supply detection device 21 detects that a fault occurs in the main power supply 2, the normally open contact is disconnected, so that the main control loop 22 is disconnected from the oil pump power supply loop 1 when power is lost.
The main control loop 22 comprises a first intermediate relay 1K1, a second intermediate relay 1K2 and a first alternating current contactor 1KM01, a coil of the first intermediate relay 1K1 is connected in series between a zero line and a live line of an alternating current power grid, two ends of the coil of the first intermediate relay 1K1 are connected in parallel with a main display unit 221 for displaying the working state of the main power supply 2, and the main display unit 221 is a red indicator lamp.
The second intermediate relay 1K2 is connected in parallel at two ends of the coil of the first intermediate relay 1K1, one end of a normally open contact 1K1-1 of the first intermediate relay 1K1 is connected with the connection point of the first intermediate relay 1K1 and the live wire, and the other end is connected with the coil of the second intermediate relay 1K 2; a coil of the first alternating current contactor 1KM01 is connected in parallel to two ends of a coil of the second intermediate relay 1K2, one end of a normally open contact 1K2-1 of the second intermediate relay 1K2 is connected to a connection point of the second intermediate relay 1K2 and the second alternating current contactor 1KM02, and the other end of the normally open contact is connected to a coil of the first alternating current contactor 1KM 01; the two ends of the coil of the first alternating current contactor 1KM01 are connected in parallel with a first indicator bulb, and the normally open contact 1KM01-1 of the first alternating current contactor 1KM01 is used for controlling whether the main power supply 2 is communicated with the oil pump power supply loop 1.
The standby control loop 31 comprises a third intermediate relay 1K3, a fourth intermediate relay 1K4 and a second alternating current contactor 1KM02, a coil of the third intermediate relay 1K3 is connected in series between a zero line and a live line of an alternating current power grid, two ends of a coil of the third intermediate relay 1K3 are connected in parallel with a standby display unit 311 for displaying the working state of the standby power supply 3, and the standby display unit 311 is also a red indicator lamp.
A coil of the fourth intermediate relay 1K4 is connected in parallel to two ends of a coil of the third intermediate relay 1K3, one end of a normally closed contact 1K1-2 of the first intermediate relay 1K1 is connected to a connection point of the third intermediate relay 1K3 and a live wire, and the other end of the normally closed contact is connected to a normally open contact of the third intermediate relay 1K 3; the other end of the normally open contact of the third intermediate relay 1K3 is connected to the normally closed contact 1K2-2 of the second intermediate relay 1K2, the other end of the normally closed contact 1K2-2 of the second intermediate relay 1K2 is connected to the normally closed contact 1KM01-2 of the first ac contactor 1KM01, and the other end of the normally closed contact 1KM01-2 of the first ac contactor 1KM01 is connected to the coil of the fourth intermediate relay 1K 4.
One end of a normally open contact 1K4-1 of the fourth intermediate relay 1K4 is connected with the connection point of the fourth intermediate relay 1K4 and the first alternating current contactor 1KM01, and the other end is connected with a coil of the first alternating current contactor 1KM 01; the first normally closed contact 1K4-2 and the second normally closed contact 1K4-3 of the fourth intermediate relay 1K4 are connected in series to the main control circuit 22 at both ends of the coil of the second intermediate relay 1K2, respectively.
The coil of the second alternating current contactor 1KM02 is connected in parallel to two ends of the coil of the fourth intermediate relay 1K4, two ends of the coil of the second alternating current contactor 1KM02 are connected in parallel to a second indicating bulb, a normally open contact 1KM02-1 of the second alternating current contactor 1KM02 is used for controlling whether the standby power supply 3 is communicated with the oil pump power supply loop 1, and a normally closed contact 1KM02-2 of the second alternating current contactor 1KM02 is connected in series between the normally open contact 1K1-1 of the first intermediate relay 1K1 and the normally closed contact 1K4-3 of the fourth intermediate relay 1K4 in the main control loop 22.
When the main control circuit 22 works, the normally closed contact 1K1-2 of the first intermediate relay 1K1, the normally closed contact 1K2-2 of the second intermediate relay 1K2 and the normally closed contact 1KM01-2 of the first alternating current contactor 1KM01 are all adsorbed and disconnected, the standby control circuit 31 is controlled to lose power, and the standby power supply 3 is disconnected from the oil pump power supply circuit 1; when the standby control circuit 31 works, the first normally closed contact 1K4-2 and the second normally closed contact 1K4-3 of the fourth intermediate relay 1K4 are respectively adsorbed and disconnected, so that the main control circuit 22 loses power and the main control circuit 22 is disconnected from the oil pump power supply circuit 1.
The working principle is as follows:
when the main power supply detection device 21 detects that the main power supply 2 is under-voltage, the normally open contact of the main power supply detection device 21 is disconnected; at the moment, the first intermediate relay 1K1 is de-energized, the normally open contact of the first intermediate relay is opened, so that the second intermediate relay 1K2 is de-energized, meanwhile, the normally closed contact 1K1-2 of the first intermediate relay 1K1 is closed, the main indicating unit is extinguished, and an operator can know the normally closed contact. The second intermediate relay 1K2 is powered off to cause the normally open contact 1K2-1 of the second intermediate relay 1K2 to open while the normally closed contact 1K2-2 of the second intermediate relay 1K2 is closed so that the first ac contactor 1KM01 is powered off, and the first ac contactor 1KM01 is powered off to cause the normally open contact 1KM01-1 of the first ac contactor 1KM01 to open so that the main power supply 2 is disconnected from the oil pump power supply circuit 1 while the normally closed contact 1KM01-2 of the first ac contactor 1KM01 is closed. Since the normally closed contact 1K1-2 of the first intermediate relay 1K1 is closed, the third intermediate relay 1K3 is always connected to the circuit, the normally open contact of the third intermediate relay 1K3 is closed, the standby display unit 311 is turned on, and the standby control circuit 31 operates. And because the normally closed contact 1K2-2 of the second intermediate relay 1K2 is closed, the normally closed contact 1KM01-2 of the first ac contactor 1KM01 is closed, and the standby power supply 3 is normal, the fourth intermediate relay 1K4 is powered on to cause the normally open contact 1K4-1 of the fourth intermediate relay 1K4 to be closed to cause the second ac contactor 1KM02 to be powered on, and simultaneously, the first normally closed contact 1K4-2 and the second normally closed contact 1K4-3 of the fourth intermediate relay 1K4 are opened. The second alternating current contactor 1KM02 is electrified to enable the normally open contact 1KM02-1 of the second alternating current contactor 1KM02 to be closed, so that the standby power supply 3 is connected into the oil pump power supply loop 1, and meanwhile, the normally closed contact 1KM02-2 of the second alternating current contactor 1KM02 is disconnected, and the main control loop 22 is guaranteed to be disconnected.
When the main power supply detection device 21 detects that the main power supply 2 returns to normal, the normally open contact of the main power supply detection device 21 is closed; at the moment, the first intermediate relay 1K1 is electrified, the normally open contact of the first intermediate relay is closed, so that the second intermediate relay 1K2 is electrified, meanwhile, the normally closed contact 1K1-2 of the first intermediate relay 1K1 is disconnected, the main indicating unit is lightened, and an operator can know the situation. Because the normally closed contact 1K1-2 of the first intermediate relay 1K1 is opened, the standby control circuit 31 loses power, the fourth intermediate relay 1K4 and the second alternating current contactor 1KM02 lose power, so that the normally open contact 1KM02-1 of the second alternating current contactor 1KM02 is opened, the standby power supply 3 is disconnected from the oil pump power supply circuit 1, meanwhile, the normally closed contact 1KM02-2 of the second alternating current contactor 1KM02 is closed, and the first normally closed contact 1K4-2 and the second normally closed contact 1K4-3 of the fourth intermediate relay 1K4 are both closed, and the main control circuit 22 is ensured to be conducted. At the moment, the second intermediate relay 1K2 is powered on to cause the normally open contact 1K2-1 of the second intermediate relay 1K2 to be closed, meanwhile, the normally closed contact 1K2-2 of the second intermediate relay 1K2 is disconnected, so that the first alternating current contactor 1KM01 is powered on, the normally open contact 1KM01-1 powered off by the first alternating current contactor 1KM01 is powered on to cause the normally open contact 1KM01-1 powered off by the first alternating current contactor 1KM01 to be closed, the main power supply source 2 is recovered, meanwhile, the normally closed contact 1KM01-2 of the first alternating current contactor 1KM01 is disconnected, and the standby control circuit 31 is guaranteed to be disconnected.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (7)
1. The utility model provides a lubricating oil system with dual supply switching control circuit, includes oil pump supply circuit (1), its characterized in that: the oil pump power supply loop (1) is coupled with a main power supply (2), and a connection point of the oil pump power supply loop (1) and the main power supply (2) is connected with a standby power supply (3); a main power supply detection device (21) for detecting the power supply state of the main power supply (2) and outputting a power supply signal is coupled in the main power supply (2), and a main control loop (22) which is controlled by the power supply signal to control the main power supply (2) to be disconnected from the oil pump power supply loop (1) and output a main control signal is coupled in the main power supply (2); the standby power supply (3) is coupled with a standby control loop (31) which is controlled by a main control signal to switch the standby power supply loop into the oil pump power supply loop (1) or switch the standby power supply loop out of the oil pump power supply loop (1).
2. The lubricating oil system with the dual power supply switching control loop according to claim 1, wherein: the standby control loop (31) comprises a standby display unit (311) for displaying the working state of the standby power supply (3).
3. The lubricating oil system with the dual power supply switching control loop according to claim 1, wherein: the main control loop (22) comprises a main display unit (221) for displaying the working state of the main control loop (22).
4. The lubricating oil system with the dual power supply switching control loop according to claim 1, wherein: and a standby power supply detection device (32) for detecting the power supply state of the standby power supply (3) and outputting a standby power supply signal is coupled to the standby power supply (3).
5. The lubrication oil system with dual power switching control loop of claim 4, wherein: and the oil pump power supply detection device (11) for detecting the oil pump power supply state and giving an alarm when the oil pump power supply state is undervoltage is coupled to the oil pump power supply loop (1).
6. The lubricating oil system with the dual power supply switching control loop according to claim 1, wherein: the main power supply (2) and the standby power supply (3) are two different buses of a power plant or the standby power supply (3) is a UPS power supply.
7. The lubrication oil system with dual power switching control loop of claim 5, wherein: the main power supply detection device (21), the standby power supply detection device (32) and the oil pump power supply detection device (11) are all control relays.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020483371.0U CN211556976U (en) | 2020-04-03 | 2020-04-03 | Lubricating oil system with dual power supply switching control loop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020483371.0U CN211556976U (en) | 2020-04-03 | 2020-04-03 | Lubricating oil system with dual power supply switching control loop |
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| Publication Number | Publication Date |
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| CN211556976U true CN211556976U (en) | 2020-09-22 |
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| CN202020483371.0U Active CN211556976U (en) | 2020-04-03 | 2020-04-03 | Lubricating oil system with dual power supply switching control loop |
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| CN (1) | CN211556976U (en) |
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