CN210867269U - Automatic switching device for main and standby power supplies of lubricating system in long-distance large-pipe-diameter water transfer system - Google Patents
Automatic switching device for main and standby power supplies of lubricating system in long-distance large-pipe-diameter water transfer system Download PDFInfo
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- CN210867269U CN210867269U CN201921700250.0U CN201921700250U CN210867269U CN 210867269 U CN210867269 U CN 210867269U CN 201921700250 U CN201921700250 U CN 201921700250U CN 210867269 U CN210867269 U CN 210867269U
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Abstract
The utility model discloses a lubricating system activestandby power supply automatic switching control equipment in long distance large-diameter water transfer system, including main power supply, stand-by power supply, relay and first ac contactor, the relay is connected with first ac contactor electricity, and the relay is connected with the main power supply, and first ac contactor is connected with stand-by power supply, and when the main power supply outage, first contactor switches over the electrical apparatus power supply of external load, has effectively solved when the main power supply appears and has cut off the power supply, automatic switch over to stand-by power supply; the main power supply is automatically recovered after the main power supply is recovered, so that the work of a main and standby lubricating system of the pipeline water delivery and transfer system is improved, the service life of a main pump is prolonged, and the economic benefit of water delivery and transfer is improved.
Description
Technical Field
The utility model relates to a large-scale pipeline water delivery engineering control field specifically is lubricating system activestandby power automatic switching control equipment in long distance large-diameter water transfer system.
Background
The long-distance large-diameter pipeline transportation business is not popular in China, and is popular among more resource owners due to the advantages of energy conservation, environmental protection, low loss, balance and stability and the like. The pipeline transportation cost is lower than the road transportation cost, the requirement of continuous production of modern factories can be met, and the service life of the pipeline is 30 years, so the economic benefit is considerable.
The pipeline transportation is an energy-saving emission-reducing and environment-friendly project actively popularized by the state at present, meets the national sustainable development requirement, and is a project supported by the national industrial policy. Pipeline transportation expense reduces than highway transportation expense by a wide margin, except pipeline transportation system's self operation cost expense, does not produce other expenses, and pipeline transportation system implements pipeline transportation system automated control through monitored control system, adopts the pipe-line transportation, improves enterprise economic benefits, reduces the important measure of expense cost, consequently, the utility model discloses have the prospect of unlimited amount.
In a water conveying and transferring system, a main pump of a pump station is particularly important, but the main pump is damaged due to sudden power supply failure of a lubricating system (a thin oil station) of the main pump, so that production and economic losses are affected, and the automatic power supply switching of the thin oil station has important significance. For guaranteeing the real-time operation of thin oil station, should take necessary measure, the utility model discloses to the problem that exists more than, can effectively solve the thin oil station owner of complicated topography long distance conduit and be equipped with power supply automatic switch-over problem, make the high-efficient economic operation of pipeline water delivery and transfer system safety and stability.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a be applied to lubricating system (thin oil station) of main pump among long distance big pipe diameter pipeline water delivery and transfer system because power failure suddenly, activestandby power supply automatic switch-over method, it is especially important to aim at main pump lubricating system's security among long distance big pipe diameter high-lift water delivery and transfer system, nevertheless because of the emergence of power supply trouble, therefore has important meaning for the lubricated safe handling of main pump that has pressure water delivery and transfer pipeline. For guaranteeing pipeline water delivery system's security, should take necessary measure, the utility model discloses to the problem that exists more than, lubricating system (thin oil station) of the main pump in water delivery and transfer system is owing to have a power failure suddenly, activestandby power supply automatic switch-over method, can effectively solve the activestandby lubrication problem of complicated topography long distance water delivery pipeline, has effectively protected the main pump, has improved pipeline transportation's work efficiency and economic benefits.
The scheme is realized as follows:
lubricating system activestandby power supply automatic switching control equipment in long distance big pipe diameter water transfer system, including main power supply, stand-by power supply, relay and first ac contactor, the relay is connected with first ac contactor electricity, and the relay is connected with the main power supply, and first ac contactor is connected with stand-by power supply, and when the main power supply outage, first contactor switches over the electrical apparatus power supply of external load.
Preferably, terminals of control coils a1 and a2 of the relay are respectively connected with a phase line a and a phase line B of a main power supply, a normally closed contact of the relay is connected with a phase line a of a standby power supply, the other end of the normally closed contact of the relay is connected with a terminal a1 of a first alternating current contactor, and a terminal a2 of the first alternating current contactor is connected with the phase line B of the standby power supply.
Preferably, the automatic switching device further comprises a second alternating current contactor, terminals of the relay control coils A1 and A2 are respectively connected with the phase line A and the line N of the main wiring, a terminal of a control coil A1 of the first alternating current contactor is connected with a normally open contact of the relay, and the other terminal of the normally open contact of the relay, which is connected with the terminal of the first alternating current contactor control coil A1, is connected with the phase line A of the standby power supply; the control coil A2 terminal of first ac contactor is connected with the N line of main power supply, the A1 terminal of second ac contactor control coil is connected with the normally closed contact of relay, the other end terminal that the normally closed contact of relay corresponds is connected with stand-by power supply's A looks line, the A2 terminal of second ac relay is connected with the N line of main power supply.
Preferably, melting point devices are arranged at the ports A1 and A2 of the first alternating current contactor, the second alternating current contactor and the relay, and the rated current of each melting point device is 10A.
The utility model provides a method for realizing the automatic switching device of the main power supply and the standby power supply of a lubricating system in a long-distance large-diameter water transfer system, which comprises the following steps,
1. the binding posts of control coils A1 and A2 of the relay are respectively connected with phase A and phase B of a main power supply, the normally closed contact of the relay is connected with phase A of a standby power supply,
2. and connecting the other end of the normally closed contact of the relay with an A1 binding post of the first alternating current contactor, and connecting an A2 binding post of the first alternating current contactor with a B phase wire of the standby power supply.
The utility model provides a realization method of an automatic switching device for a main power supply and a standby power supply of a lubricating system in a long-distance large-diameter water transfer system, which comprises the following steps,
1. connecting binding posts of relay control coils A1 and A2 with a phase line A and an N line of a main wiring respectively, and connecting a binding post A1 of a control coil of a first alternating current contactor with a normally open contact of a relay;
2. connecting the other binding post of the normally open contact of the relay connected with the binding post of the control coil A1 of the first alternating current contactor with the phase line A of the standby power supply; the control coil a2 terminal of the first ac contactor is connected to the N line of the main power supply.
3. And (3) connecting the A1 wiring terminal of the control coil of the second alternating current contactor with the normally closed contact of the relay, connecting the wiring terminal at the other end corresponding to the normally closed contact of the relay with the A phase line of the standby power supply, and connecting the A2 wiring terminal of the second alternating current contactor with the N line of the main power supply.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the problem that when the main power supply is powered off, the standby power supply is automatically switched is effectively solved.
2. And automatically recovering the main power supply after the main power supply is recovered.
3. The main and standby lubricating systems of the pipeline water conveying and transferring system are improved to work, the service life of the main pump is prolonged, and the economic benefits of water conveying and transferring are improved.
Drawings
Fig. 1 is a schematic view of a connection structure of embodiment 1 of the present invention;
fig. 2 is a schematic view of a connection structure of embodiment 2 of the present invention;
fig. 3 is a schematic diagram of a circuit connection structure according to embodiment 2 of the present invention;
the labels in the figure are: 1. a main power supply; 2. a standby power supply; 3. a relay; 4. a first AC contactor; 5. a1 terminal; 6. a2 terminal; 7. a normally open contact; 8. normally closed contact, 9, second ac contactor.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the designated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature.
Example 1
As shown in fig. 1, lubricating system activestandby power supply automatic switching control equipment in long distance large-diameter water transfer system, including main power supply 1, stand-by power supply 2, relay 3 and first ac contactor 4, relay 3 is connected with first ac contactor 4 electricity, and relay 3 is connected with main power supply 1, and first ac contactor 4 is connected with stand-by power supply 2, and when main power supply 1 outage, first contactor switches over the electrical apparatus power supply of external load, guarantees that external load's electrical apparatus can continue work when main power supply 1 outage.
The terminal of the control coil A1 of relay 3, A2 is connected with A looks, the B phase line of main power supply 1 respectively, the normally closed contact 8 of relay 3 is connected with stand-by power supply 2's A, the other end of the normally closed contact 8 of relay 3 is connected with the A1 terminal 5 of first ac contactor 4, the A2 terminal 6 of first ac contactor 4 is connected with stand-by power supply 2's B phase line.
At the moment, the relay 3 is electrified, the relay 3 normally works, the normally closed contact 8 of the relay 3 is disconnected, the first alternating current contactor 4 cannot work, if the relay 3 is powered off, the normally closed contact 8 of the relay 3 is connected, the control coil of the first alternating current contactor 4 is connected, the first alternating current contactor 4 works, and power supply of an external electric appliance is guaranteed; when the power supply of the relay 3 is recovered, the coil loop of the relay 3 is immediately electrified, the relay 3 immediately works, and the control loop of the first alternating current contact is cut off by the normally closed contact 8 of the relay 3, so that the work is immediately stopped. The outlet wires of the relay 3 and the first alternating current contactor 4 are correspondingly converged into a unified A, B, C three-phase wire for the lower end motor at A, B, C three phases.
The A1 and A2 terminals 6 are both at different ends of the control coil on the relay 3 or the contactor.
Example 2
In another scheme, the automatic switching device further comprises a second alternating current contactor 9, the terminals of the control coils A1 and A2 of the relay 3 are respectively connected with the phase line A and the phase line N of the main wiring, the terminal A1 of the control coil A1 of the first alternating current contactor 4 is connected with the normally open contact 7 of the relay 3, and the other terminal of the normally open contact 7 of the relay 3 connected with the terminal A1 of the control coil A1 of the first alternating current contactor 4 is connected with the phase line A of the backup power supply 2; the control coil a2 terminal 6 of the first ac contactor 4 is connected to the N line of the main power supply 1.
Further, a1 terminal 5 of a control coil of the second alternating current contactor 9 is connected with a normally closed contact 8 of the relay 3, a terminal at the other end corresponding to the normally closed contact 8 of the relay 3 is connected with an a phase line of the standby power supply 2, and an a2 terminal 6 of the second alternating current contactor 3 is connected with an N line of the main power supply 1.
When the main power supply 1 is powered, the relay 3 normally works, the coil of the first alternating current contactor 4 is connected, the main power supply 1 is connected, and the coil control loop of the second alternating current contactor 9 is disconnected. When the main power supply 1 is powered off, the relay 3 stops operating, the coil of the second ac relay 3 is turned on, the backup power supply 2 is turned on, and the coil control circuit of the first ac relay 3 is turned off. The outgoing lines of the first alternating current contactor 4 and the second alternating current contactor 9 are correspondingly converged into a unified A, B, C three-phase electric wire for the lower end motor at A, B, C three phases.
Through the arrangement, a main pump lubricating system in a long-distance large-pipe-diameter high-lift water delivery and transfer system can automatically switch power supplies quickly and efficiently due to the occurrence of power supply faults, so that the main pump is effectively protected, and the working efficiency and the economic benefit of pipeline conveying are improved.
In order to make the circuit safer, melting point devices are arranged on the ports A1 and A2 of the first alternating current contactor 4, the second alternating current contactor 9 and the relay 3, and the rated current of each melting point device is 10A.
The utility model provides a lubricating system activestandby power supply automatic switching control equipment's implementation method among long distance large-diameter water transfer system:
1. the terminals of control coils A1 and A2 of the relay 3 are respectively connected with phase A and phase B of the main power supply 1, the normally closed contact 8 of the relay 3 is connected with phase A of the standby power supply 2,
2. the other end of the normally closed contact 8 of the relay 3 is connected to the a1 terminal 5 of the first ac contactor 4, and the a2 terminal 6 of the first ac contactor 4 is connected to the B phase line of the backup power supply 2.
At the moment, the relay 3 is electrified, the relay 3 normally works, the normally closed contact 8 of the relay 3 is disconnected, the first alternating current contactor 4 cannot work, if the relay 3 is powered off, the normally closed contact 8 of the relay 3 is connected, the control coil of the first alternating current contactor 4 is connected, the first alternating current contactor 4 works, and power supply of an external electric appliance is guaranteed; when the power supply of the relay 3 is recovered, the coil loop of the relay 3 is immediately electrified, the relay 3 immediately works, and the control loop of the first alternating current contact is cut off by the normally closed contact 8 of the relay 3, so that the work is immediately stopped. The outlet wires of the relay 3 and the first alternating current contactor 4 are correspondingly converged into a unified A, B, C three-phase wire for the lower end motor at A, B, C three phases.
The utility model provides a lubricating system activestandby power supply automatic switching control equipment's implementation method among another kind of long distance large-diameter water transfer system:
1. connecting binding posts of control coils A1 and A2 of the relay 3 with a phase line A and an N line of a main wiring respectively, and connecting a binding post 5 of a control coil A1 of the first alternating current contactor 4 with a normally open contact 7 of the relay 3;
2. connecting the other terminal of the normally open contact 7 of the relay 3 connected with the terminal 5 of the control coil A1 of the first alternating current contactor 4 with the phase A of the standby power supply 2; the control coil a2 terminal 6 of the first ac contactor 4 is connected to the N line of the main power supply 1.
3. A1 terminal 5 of a control coil of a second alternating current contactor 9 is connected with a normally closed contact 8 of a relay 3, the terminal at the other end corresponding to the normally closed contact 8 of the relay 3 is connected with an A phase line of a standby power supply 2, and an A2 terminal 6 of the second alternating current relay 3 is connected with an N line of a main power supply 1.
When the main power supply 1 is powered, the relay 3 normally works, the coil of the first alternating current contactor 4 is connected, the main power supply 1 is connected, and the coil control loop of the second alternating current contactor 9 is disconnected. When the main power supply 1 is powered off, the relay 3 stops operating, the coil of the second ac relay 3 is turned on, the backup power supply 2 is turned on, and the coil control circuit of the first ac relay 3 is turned off. The outgoing lines of the first alternating current contactor 4 and the second alternating current contactor 9 are correspondingly converged into a unified A, B, C three-phase electric wire for the lower end motor at A, B, C three phases.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (4)
1. Lubricating system activestandby power automatic switching control equipment in long distance large-diameter water transfer system which characterized in that: including main power supply, stand-by power supply, relay and first ac contactor, the relay is connected with first ac contactor electricity, and the relay is connected with the main power supply, and first ac contactor is connected with stand-by power supply, and when the main power supply outage, first contactor switches the electrical apparatus power supply of external load.
2. The automatic switching device for the main and standby power supplies of the lubricating system in the long-distance large-pipe-diameter water transfer system according to claim 1, characterized in that: the terminal of the control coil A1, A2 of relay is connected with the A looks, the B phase line of main power supply respectively, the normally closed contact of relay is connected with stand-by power supply's A, the other end of relay normally closed contact and first ac contactor's A1 terminal connection, first ac contactor's A2 terminal is connected with stand-by power supply's B phase line.
3. The automatic switching device for the main and standby power supplies of the lubricating system in the long-distance large-pipe-diameter water transfer system according to claim 2, characterized in that: the automatic switching device further comprises a second alternating current contactor, the binding posts of the relay control coils A1 and A2 are respectively connected with the phase line A and the line N of the main wiring, the binding post of the control coil A1 of the first alternating current contactor is connected with the normally open contact of the relay, and the other binding post of the normally open contact of the relay, which is connected with the binding post of the control coil A1 of the first alternating current contactor, is connected with the phase line A of the standby power supply; the control coil A2 terminal of first ac contactor is connected with the N line of main power supply, the A1 terminal of second ac contactor control coil is connected with the normally closed contact of relay, the other end terminal that the normally closed contact of relay corresponds is connected with stand-by power supply's A looks line, the A2 terminal of second ac relay is connected with the N line of main power supply.
4. The automatic switching device for the main and standby power supplies of the lubricating system in the long-distance large-pipe-diameter water transfer system according to claim 1, characterized in that: melting point devices are arranged on ports A1 and A2 of the first alternating current contactor, the second alternating current contactor and the relay, and the rated current of each melting point device is 10A.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921700250.0U CN210867269U (en) | 2019-10-11 | 2019-10-11 | Automatic switching device for main and standby power supplies of lubricating system in long-distance large-pipe-diameter water transfer system |
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| CN201921700250.0U CN210867269U (en) | 2019-10-11 | 2019-10-11 | Automatic switching device for main and standby power supplies of lubricating system in long-distance large-pipe-diameter water transfer system |
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|---|---|---|---|---|
| CN110601352A (en) * | 2019-10-11 | 2019-12-20 | 云南大红山管道有限公司 | Automatic switching device for main and standby power supplies of lubricating system in long-distance large-pipe-diameter water regulating system and implementation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110601352A (en) * | 2019-10-11 | 2019-12-20 | 云南大红山管道有限公司 | Automatic switching device for main and standby power supplies of lubricating system in long-distance large-pipe-diameter water regulating system and implementation method |
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