CN213402454U - Standby power supply control system of direct current lubricating pump - Google Patents
Standby power supply control system of direct current lubricating pump Download PDFInfo
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- CN213402454U CN213402454U CN202022356978.5U CN202022356978U CN213402454U CN 213402454 U CN213402454 U CN 213402454U CN 202022356978 U CN202022356978 U CN 202022356978U CN 213402454 U CN213402454 U CN 213402454U
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Abstract
The utility model relates to a DC lubricating pump standby power supply control system, which belongs to the technical field of standby power supply control systems; the technical problem to be solved is as follows: the improvement of the hardware structure of the standby power supply control system of the direct-current lubricating pump is provided; the technical scheme for solving the technical problems is as follows: the direct-current power supply comprises a direct-current screen, a first standby power supply and a second standby power supply, wherein a battery outlet end of the direct-current screen is connected with a direct-current contactor KM1 in series and then is respectively connected with a direct-current contactor KM2 and a first load 4; the battery outlet end of the first standby power supply is connected with a direct current contactor KM3 in series and then is respectively connected with a direct current contactor KM4 and a second load; the battery outlet end of the second standby power supply is connected with the direct current contactor KM5 in series and then is respectively connected with the direct current contactor KM6 and a third load; the outlet end of the direct current contactor KM2 is connected with the outlet end of the direct current contactor KM4 in parallel through a lead and then is connected with the outlet end of the direct current contactor KM 6; the utility model discloses be applied to the power and each other be equipped with the use.
Description
Technical Field
The utility model relates to a DC lubricating pump stand-by power supply control system belongs to DC lubricating pump stand-by power supply control system technical field.
Background
In the waste heat power station, the direct current screen provides reliable direct current power supplies for control signals, relay protection, automatic devices, breaker tripping and closing operation loops and the like under normal conditions, and provides direct current power supplies for emergency lighting, alternating current uninterrupted power supplies and the like under the condition of an alternating current power supply disappearance accident; the alternating current system provides a reliable power supply for power utilization of a daily station in the transformer substation, air cooling of the transformer, operation of an oil pump and on-load voltage regulation, and the reliability of the alternating current and direct current system plays a crucial role in the safe operation of the whole transformer substation and is the guarantee of the safe operation. After the waste heat power station loses power, the direct current lubrication pump can not be started normally, and therefore major accidents such as the bearing bush is pulled due to the fact that no lubricating oil exists under the high-speed condition of the on-site generator are caused.
Therefore, a standby power control system of the direct current lubrication pump is needed to be provided, which can provide a standby power supply for the direct current screen to prevent the direct current lubrication pump from being abnormally started after the waste heat power station loses power.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an overcome not enough that exists among the prior art, the technical problem that will solve is: the improvement of the hardware structure of the standby power supply control system of the direct current lubricating pump is provided.
In order to solve the technical problem, the utility model discloses a technical scheme be: the direct-current lubricating pump standby power supply control system comprises a direct-current screen, a first standby power supply and a second standby power supply, wherein batteries are arranged in the direct-current screen, the first standby power supply and the second standby power supply, a battery outlet end of the direct-current screen is connected with an inlet wire end of a direct-current contactor KM1 through a lead, and an outlet wire end of a direct-current contactor KM1 is connected with an inlet wire end of the direct-current contactor KM2 and a power supply end of a first load 4 through leads;
the battery outlet end of the first standby power supply is connected with the inlet end of the direct current contactor KM3 through a lead, and the outlet end of the direct current contactor KM3 is connected with the inlet end of the direct current contactor KM4 and the power supply end of the second load through leads;
the battery outlet end of the second standby power supply is connected with the inlet end of the direct current contactor KM5 through a lead, and the outlet end of the direct current contactor KM5 is connected with the inlet end of the direct current contactor KM6 and the power supply end of the third load through leads;
the outlet end of the direct current contactor KM2 is connected with the outlet end of the direct current contactor KM4 in parallel through a lead and then is connected with the outlet end of the direct current contactor KM 6;
the first standby power supply is used for supplying power to a first load through the direct current contactor KM3, the direct current contactor KM4 and the direct current contactor KM2 when the direct current screen fails;
the direct current screen is used for supplying power to a second load through the direct current contactor KM1, the direct current contactor KM2 and the direct current contactor KM4 and supplying power to a second standby power supply through the direct current contactor KM1, the direct current contactor KM2 and the direct current contactor KM6 when the first standby power supply fails.
The positive and negative electrodes of the battery outlet end of the direct current panel are respectively provided with a fuse FU1 and a fuse FU2, the positive and negative electrodes of the battery outlet end of the first standby power supply are respectively provided with a fuse FU3 and a fuse FU4, and the positive and negative electrodes of the battery outlet end of the second standby power supply are respectively provided with a fuse FU5 and a fuse FU 6;
the battery appearance ends of the direct-current screen, the first standby power supply and the second standby power supply are respectively provided with a voltage relay KV1, a voltage relay KV2 and a voltage relay KV3, an intermediate relay KA1 and an intermediate relay KA2 are also arranged on the battery appearance end of the direct-current screen, an intermediate relay KA3 and an intermediate relay KA4 are also arranged on the battery appearance end of the first standby power supply, and an intermediate relay KA5 is also arranged on the battery appearance end of the second standby power supply;
the coil of the direct current contactor KM1 is KM1.1, the normally open contacts are KM1.2 and KM1.5, the normally closed contacts are KM1.3 and KM1.4, the coil of the direct current contactor KM2 is KM2.1, the coil of the direct current contactor KM3 is KM3.1, the normally open contacts are KM3.2 and KM3.5, the normally closed contacts are KM3.3 and KM3.4, the coil of the direct current contactor KM4 is KM4.1, the coil of the direct current contactor KM5 is KM5.1, the normally open contacts are KM5.2 and KM5.5, the normally closed contacts are KM5.3 and KM5.4, and the coil of the direct current contactor KM6 is KM 6.1;
the coil of the voltage relay KV1 is KV1.1, the normally open contact is KV1.2, the coil of the voltage relay KV2 is KV2.1, the normally open contact is KV2.2, the coil of the voltage relay KV3 is KV3.1, and the normally open contact is KV 3.2;
the coil of the intermediate relay KA1 is KA1.1, normally closed contacts are KA1.3 and KA1.4, the coil of the intermediate relay KA2 is KA2.1, normally closed contacts are KA2.3 and KA2.4, the coil of the intermediate relay KA3 is KA3.1, normally closed contacts are KA3.3 and KA3.4, the coil of the intermediate relay KA4 is KA4.1, normally closed contacts are KA4.3 and KA4.4, the coil of the intermediate relay KA5 is KA5.1, and normally closed contacts are KA 5.3;
the positive electrode of a battery outlet end of the direct current screen 1 is connected in series with a fuse FU1 and then is connected in parallel with one end of a button SB1 and one end of a button SB4 through a lead, the other end of the button SB4 is connected in series with a normally open contact KV1.2 and then is connected in parallel with the other end of a button SB1, one end of a coil KV1.1, one end of a coil KM1.1, one end of a coil KA2.1 and one end of an indicator lamp HL1, the other end of the coil KV1.1, the other end of the coil KM1.1, the other end of the coil KA2.1 and the other end of the indicator lamp HL1 are connected in parallel through leads and then are connected with one end of a fuse FU2, and the other end of the fuse FU2 is connected with the negative electrode of;
the positive electrode of the battery outlet end of the first standby power supply 2 is connected in series with a fuse FU3 and then is connected in parallel with one end of a button SB2 and one end of a button SB5 through a lead, the other end of the button SB5 is connected in series with a normally open contact KV2.2 and then is connected in parallel with the other end of a button SB2, one end of a coil KV2.1, one end of a coil KM3.1, one end of a coil KA4.1 and one end of an indicator lamp HL3, the other end of the coil KV2.1, the other end of the coil KM3.1, the other end of the coil KA4.1 and the other end of the indicator lamp HL3 are connected in parallel through leads and then are connected with one end of the fuse FU4, and the other end of the fuse FU4 is connected with the negative electrode of;
the battery leading-out terminal positive pole of second standby power supply concatenates fuse FU5 after parallelly connected through wire and button SB 3's one end, button SB 6's one end, the one end of coil KM5.1, the one end of coil KA5.1, pilot lamp HL5 connect in parallel behind the other end series normally open contact KV3.2 of button SB6 with the other end of button SB3, the other end of coil KA5.1, the other end of coil KM5.1, the other end of coil KA5.1, the other end of pilot lamp HL5 pass through the wire and connect the back and link to each other with fuse FU 6's one end, fuse FU 6's the other end passes through the wire and links to each other with the battery leading-out terminal negative pole of second standby power supply.
The wire outlet ends of the fuse FU1 of the direct current screen 1, the fuse FU3 of the first standby power supply 2 and the fuse FU5 of the second standby power supply 3 are respectively connected with the wire inlet end of a main breaker QF through wires, the first wire outlet end of the main breaker QF is connected with one end of a normally open contact KM1.2 through a wire, and the other end of the normally open contact KM1.2 is connected in parallel with one end of a normally closed contact KM3.3 and one end of a normally closed contact KM5.3 through wires;
a second wire outlet end of the main breaker QF is connected with a normally closed contact KM1.3 in series through a lead and then is connected with one end of a normally open contact KM 3.2;
a third outlet end of the main breaker QF is connected with a normally open contact KM5.2 and a normally closed contact KA3.3 in series through a lead and then is connected with one end of the normally closed contact KA 1.3;
the other end of the normally closed contact KM3.3 is respectively connected in parallel with the other end of the normally closed contact KM5.3, the other end of the normally open contact KM3.2, the other end of the normally closed contact KA1.3, one end of the normally closed contact KA2.3, one end of the normally closed contact KA4.3, one end of the normally closed contact KA5.3, one end of the normally closed contact KA4.4, one end of the coil KM2.1 and one end of the indicator lamp HL2 through leads;
the other end of the normally closed contact KA2.3 is connected in parallel with the other end of the normally closed contact KA4.3, one end of the coil KM4.1 and one end of the indicator lamp HL4 through a lead;
the other end of the normally closed contact KA4.4 is connected with one end of the normally closed contact KA2.4 through a lead, and the other end of the normally closed contact KA2.4 is connected with the other end of the normally closed contact KA5.3, one end of the coil KM6.1 and one end of the indicator lamp HL6 in parallel through leads;
the other end of the coil KM2.1 is respectively connected in parallel with the other end of the indicator lamp HL2, the other end of the coil KM4.1, the other end of the indicator lamp HL4, the other end of the coil KM6.1, the other end of the indicator lamp HL6, one end of the normally closed contact KM3.4, one end of the normally closed contact KM5.4, one end of the normally closed contact KM1.4 and one end of the normally open contact KM5.5 through leads;
the other end of the normally closed contact KM3.4 is connected with the other end of the normally closed contact KM5.4 through a wire, is connected in parallel with the normally open contact KM1.5, and then is connected to an outlet end of a fuse FU2 of the direct current screen;
the other end of the normally closed contact KM1.4 is connected in series with a normally open contact KM3.5 and then is connected to an outlet end of a fuse FU4 of the first standby power supply;
the other end of the normally open contact KM5.5 is connected in series with a normally closed contact KA3.4 and a normally closed contact KA1.4 and then is connected to an outlet end of a fuse FU6 of the second standby power supply.
The first load is specifically set as a switch control cabinet for controlling the on-off and the closing of a direct-current lubricating pump of the waste heat power station;
the second load is specifically set as a central control background PC end for monitoring the running condition of the waste heat power station, and the first standby power supply supplies power to the central control background PC end through an inverter;
the third load is specifically set to be an IO control cabinet connected with the central control background PC end, and the second standby power supply 3 supplies power to the IO control cabinet through the inverter.
The first standby power supply and the second standby power supply are specifically set as UPS power supplies.
And the batteries in the first standby power supply and the second standby power supply are all set into a plurality of storage batteries connected in series.
The indicator lamp HL1 is used for displaying the normal power supply state of the direct current screen, and the indicator lamp HL2 is used for displaying the fault power supply state of the direct current screen;
the indicator lamp HL3 is used for displaying the normal power supply state of the first standby power supply, and the indicator lamp HL4 is used for displaying the fault power supply state of the first standby power supply;
the indicator lamp HL5 is used for displaying the normal power supply state of the second standby power supply, and the indicator lamp HL6 is used for displaying the fault power supply state of the second standby power supply;
the indicator lamp HL1, the indicator lamp HL2, the indicator lamp HL3, the indicator lamp HL4, the indicator lamp HL5 and the indicator lamp HL6 are all arranged on an operation panel of the direct current screen 1.
The utility model discloses beneficial effect for prior art possesses does: the utility model provides a direct current lubricating pump stand-by power supply control system passes through DC contactor at the battery leading-out terminal of direct current screen and connects first do not use the power respectively, second stand-by power supply, the direct current contactor who sets up through corresponding respectively under the normal condition supplies power for the load, carry out corresponding action to fault voltage through setting up corresponding voltage relay, the power to the direct current lubricating pump when mains failure has been avoided causing the damage, after the big power loss of waste heat power station, can not cause the unable normal start-up of direct current lubricating pump, thereby lead to appearing because of the condition of no lubricating oil with the axle bush strain under the on-the-spot generator high-speed condition, the work efficiency is improved, power failure's economic loss has been reduced.
Drawings
The present invention will be further explained with reference to the accompanying drawings:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic diagram of the circuit structure of the dc screen of the present invention;
fig. 3 is a schematic circuit diagram of the first standby power supply of the present invention;
fig. 4 is a schematic circuit diagram of a second standby power supply of the present invention;
fig. 5 is a schematic diagram of the circuit structure of the dc screen, the first backup power supply, and the second backup power supply of the present invention, which are connected by the auxiliary contact.
In the figure: the power supply system comprises a direct current screen 1, a first standby power supply 2, a second standby power supply 3, a first load 4, a second load 5 and a third load 6.
Detailed Description
As shown in fig. 1 to 5, the standby power control system for a dc lubricating pump of the present invention includes a dc screen 1, and further includes a first standby power supply 2 and a second standby power supply 3, the inside of the dc screen 1, the first standby power supply 2 and the second standby power supply 3 are all provided with batteries, the battery outlet of the dc screen 1 is connected to the inlet of a dc contactor KM1 through a wire, and the outlet of the dc contactor KM1 is connected to the inlet of a dc contactor KM2 and the power supply end of a first load 4 through wires;
the battery outlet end of the first standby power supply 2 is connected with the inlet end of the direct current contactor KM3 through a lead, and the outlet end of the direct current contactor KM3 is connected with the inlet end of the direct current contactor KM4 and the power supply end of the second load 5 through leads;
a battery outlet end of the second standby power supply 3 is connected with an inlet end of the direct current contactor KM5 through a lead, and an outlet end of the direct current contactor KM5 is connected with an inlet end of the direct current contactor KM6 and a power supply end of the third load 6 through leads;
the outlet end of the direct current contactor KM2 is connected with the outlet end of the direct current contactor KM4 in parallel through a lead and then is connected with the outlet end of the direct current contactor KM 6;
the first standby power supply 2 is used for supplying power to the first load 4 through the direct current contactor KM3, the direct current contactor KM4 and the direct current contactor KM2 when the direct current screen 1 fails;
the direct current panel 1 is used for supplying power to the second load 5 through the direct current contactor KM1, the direct current contactor KM2 and the direct current contactor KM4 and supplying power to the second backup power source 3 through the direct current contactor KM1, the direct current contactor KM2 and the direct current contactor KM6 when the first backup power source 2 fails.
The positive and negative electrodes of the battery outlet end of the direct current panel 1 are respectively provided with a fuse FU1 and a fuse FU2, the positive and negative electrodes of the battery outlet end of the first standby power supply 2 are respectively provided with a fuse FU3 and a fuse FU4, and the positive and negative electrodes of the battery outlet end of the second standby power supply 3 are respectively provided with a fuse FU5 and a fuse FU 6;
the battery appearance ends of the direct current screen 1, the first standby power supply 2 and the second standby power supply 3 are respectively provided with a voltage relay KV1, a voltage relay KV2 and a voltage relay KV3, the battery appearance end of the direct current screen 1 is also provided with an intermediate relay KA1 and an intermediate relay KA2, the battery appearance end of the first standby power supply 2 is also provided with an intermediate relay KA3 and an intermediate relay KA4, and the battery appearance end of the second standby power supply 3 is also provided with an intermediate relay KA 5;
the coil of the direct current contactor KM1 is KM1.1, the normally open contacts are KM1.2 and KM1.5, the normally closed contacts are KM1.3 and KM1.4, the coil of the direct current contactor KM2 is KM2.1, the coil of the direct current contactor KM3 is KM3.1, the normally open contacts are KM3.2 and KM3.5, the normally closed contacts are KM3.3 and KM3.4, the coil of the direct current contactor KM4 is KM4.1, the coil of the direct current contactor KM5 is KM5.1, the normally open contacts are KM5.2 and KM5.5, the normally closed contacts are KM5.3 and KM5.4, and the coil of the direct current contactor KM6 is KM 6.1;
the coil of the voltage relay KV1 is KV1.1, the normally open contact is KV1.2, the coil of the voltage relay KV2 is KV2.1, the normally open contact is KV2.2, the coil of the voltage relay KV3 is KV3.1, and the normally open contact is KV 3.2;
the coil of the intermediate relay KA1 is KA1.1, normally closed contacts are KA1.3 and KA1.4, the coil of the intermediate relay KA2 is KA2.1, normally closed contacts are KA2.3 and KA2.4, the coil of the intermediate relay KA3 is KA3.1, normally closed contacts are KA3.3 and KA3.4, the coil of the intermediate relay KA4 is KA4.1, normally closed contacts are KA4.3 and KA4.4, the coil of the intermediate relay KA5 is KA5.1, and normally closed contacts are KA 5.3;
the positive electrode of a battery outlet end of the direct current screen 1 is connected in series with a fuse FU1 and then is connected in parallel with one end of a button SB1 and one end of a button SB4 through a lead, the other end of the button SB4 is connected in series with a normally open contact KV1.2 and then is connected in parallel with the other end of a button SB1, one end of a coil KV1.1, one end of a coil KM1.1, one end of a coil KA2.1 and one end of an indicator lamp HL1, the other end of the coil KV1.1, the other end of the coil KM1.1, the other end of the coil KA2.1 and the other end of the indicator lamp HL1 are connected in parallel through leads and then are connected with one end of the fuse FU2, and the other end of the fuse FU2 is connected with the negative electrode of the;
the positive electrode of the battery outlet end of the first standby power supply 2 is connected in series with a fuse FU3 and then is connected in parallel with one end of a button SB2 and one end of a button SB5 through a lead, the other end of the button SB5 is connected in series with a normally open contact KV2.2 and then is connected in parallel with the other end of a button SB2, one end of a coil KV2.1, one end of a coil KM3.1, one end of a coil KA4.1 and one end of an indicator lamp HL3, the other end of the coil KV2.1, the other end of the coil KM3.1, the other end of the coil KA4.1 and the other end of the indicator lamp HL3 are connected in parallel through leads and then are connected with one end of the fuse FU4, and the other end of the fuse FU4 is connected with the negative electrode of the;
the battery leading-out terminal positive pole of second standby power supply 3 concatenates fuse FU5 after parallelly connected through wire and button SB 3's one end, button SB 6's one end, the one end of coil KM5.1, the one end of coil KA5.1, the one end of pilot lamp HL5 are parallelly connected with the other end of button SB3, the other end of coil KM5.2 after the other end of button SB6 concatenates normally open contact KV3.2, the other end of coil KV3.1, the other end of coil KM5.1, the other end of coil KA5.1, the other end of pilot lamp HL5 pass through the wire and connect the back and link to each other with fuse FU 6's one end, fuse FU 6's the other end passes through the wire and links to each other with second standby power supply 3's battery leading-out terminal.
The wire outlet ends of the fuse FU1 of the direct current screen 1, the fuse FU3 of the first standby power supply 2 and the fuse FU5 of the second standby power supply 3 are respectively connected with the wire inlet end of a main breaker QF through wires, the first wire outlet end of the main breaker QF is connected with one end of a normally open contact KM1.2 through a wire, and the other end of the normally open contact KM1.2 is connected in parallel with one end of a normally closed contact KM3.3 and one end of a normally closed contact KM5.3 through wires;
a second wire outlet end of the main breaker QF is connected with a normally closed contact KM1.3 in series through a lead and then is connected with one end of a normally open contact KM 3.2;
a third outlet end of the main breaker QF is connected with a normally open contact KM5.2 and a normally closed contact KA3.3 in series through a lead and then is connected with one end of the normally closed contact KA 1.3;
the other end of the normally closed contact KM3.3 is respectively connected in parallel with the other end of the normally closed contact KM5.3, the other end of the normally open contact KM3.2, the other end of the normally closed contact KA1.3, one end of the normally closed contact KA2.3, one end of the normally closed contact KA4.3, one end of the normally closed contact KA5.3, one end of the normally closed contact KA4.4, one end of the coil KM2.1 and one end of the indicator lamp HL2 through leads;
the other end of the normally closed contact KA2.3 is connected in parallel with the other end of the normally closed contact KA4.3, one end of the coil KM4.1 and one end of the indicator lamp HL4 through a lead;
the other end of the normally closed contact KA4.4 is connected with one end of the normally closed contact KA2.4 through a lead, and the other end of the normally closed contact KA2.4 is connected with the other end of the normally closed contact KA5.3, one end of the coil KM6.1 and one end of the indicator lamp HL6 in parallel through leads;
the other end of the coil KM2.1 is respectively connected in parallel with the other end of the indicator lamp HL2, the other end of the coil KM4.1, the other end of the indicator lamp HL4, the other end of the coil KM6.1, the other end of the indicator lamp HL6, one end of the normally closed contact KM3.4, one end of the normally closed contact KM5.4, one end of the normally closed contact KM1.4 and one end of the normally open contact KM5.5 through leads;
the other end of the normally closed contact KM3.4 is connected with the other end of the normally closed contact KM5.4 through a wire, is connected in parallel with the normally open contact KM1.5, and then is connected to an outlet end of a fuse FU2 of the direct current screen 1;
the other end of the normally closed contact KM1.4 is connected in series with a normally open contact KM3.5 and then is connected to an outlet end of a fuse FU4 of the first standby power supply 2;
the other end of the normally open contact KM5.5 is connected in series with the normally closed contact KA3.4 and the normally closed contact KA1.4 and then is connected to the wire outlet end of the fuse FU6 of the second standby power supply 3.
The first load 4 is specifically set as a switch control cabinet for controlling the on-off and the closing of a direct-current lubricating pump of the waste heat power station;
the second load 5 is specifically set as a central control background PC end for monitoring the running condition of the waste heat power station, and the first standby power supply 2 supplies power to the central control background PC end through an inverter;
the third load 6 is specifically set as an IO control cabinet connected with a central control background PC end, and the second standby power supply 3 supplies power to the IO control cabinet through an inverter.
The first standby power supply 2 and the second standby power supply 3 are specifically set as UPS power supplies.
The batteries in the first standby power supply 2 and the second standby power supply 3 are all set as a plurality of storage batteries connected in series.
The indicator lamp HL1 is used for displaying the normal power supply state of the direct current screen 1, and the indicator lamp HL2 is used for displaying the fault power supply state of the direct current screen 1;
the indicator lamp HL3 is used for displaying the normal power supply state of the first standby power supply 2, and the indicator lamp HL4 is used for displaying the fault power supply state of the first standby power supply 2;
the indicator lamp HL5 is used for displaying the normal power supply state of the second standby power supply 3, and the indicator lamp HL6 is used for displaying the fault power supply state of the second standby power supply 3;
the indicator lamp HL1, the indicator lamp HL2, the indicator lamp HL3, the indicator lamp HL4, the indicator lamp HL5 and the indicator lamp HL6 are all arranged on an operation panel of the direct current screen 1.
The control method of the standby power supply of the direct current lubricating pump comprises the following steps:
the method comprises the following steps: the button SB1, the button SB2 and the button SB3 are sequentially closed, then the main breaker QF is closed, at the moment, the direct-current screen 1 normally supplies power through the direct-current contactor KM1, the first standby power supply 2 normally supplies power through the direct-current contactor KM3, and the second standby power supply 3 normally supplies power through the direct-current contactor KM 5;
step two: when the voltage relay KV1 detects that the voltage value is lower than the set range, the fault of the direct-current screen 1 is judged, at the moment, the voltage relay KV1 is in power-off action, the direct-current contactor KM1, the intermediate relay KA1 and the intermediate relay KA2 are disconnected, and the first standby power supply 2 supplies power to the first load 4 through the direct-current contactors KM3, KM4 and KM 2;
step three: when the voltage relay KV2 detects that the voltage value is lower than the set range, the first standby power supply 2 is judged to be in fault, at the moment, the voltage relay KV2 is in power-off action, the direct-current contactor KM3, the intermediate relay KA3 and the intermediate relay KA4 are disconnected, and the direct-current screen 1 supplies power to the second load 5 through the direct-current contactor KM1, the direct-current contactor KM2 and the direct-current contactor KM 4;
step four: when the voltage relay KV3 detects that the voltage value is lower than the set range, it is determined that the second backup power supply 3 has a fault, at this time, the voltage relay KV3 loses power and operates, the direct-current contactor KM5 and the intermediate relay KA5 are disconnected, and the direct-current screen 1 supplies power to the third load 6 through the direct-current contactor KM1, the direct-current contactor KM2 and the direct-current contactor KM6.
And in the second step, the voltage detection ranges of the voltage relay KV1, the voltage relay KV2 and the voltage relay KV3 are 190V-210V.
The utility model provides a including three voltage relay KAV1, KV2 and KV3 and six direct current contactor KM1, KM2, KM3, KM4 and KM5 in the direct current lubrication pump stand-by power supply control system, five auxiliary relay KA1, KA2, KA3, KA4, KA5, three voltage relay KAV1, KV2 and KV 3's power is got respectively from direct current screen 1 and first stand-by power supply 2, second stand-by power supply 2's battery is qualified for the next round of competitions.
The utility model discloses under the normal condition, direct current screen 1 supplies power for first load 4 through direct current contactor KM1, and first stand-by power supply 2 supplies power for second load 5 through direct current contactor KM3, and third stand-by power supply 3 supplies power for third load 6 through direct current contactor KM5. The direct current contactors KM2, KM4, KM6 were in a separated state.
The utility model discloses a theory of operation does: under normal conditions, the operation process comprises the steps of firstly disconnecting the total breaker QF, pressing a SB1 button to turn on a voltage relay KV1 (KV 1 normally open contact KV1.2 self protection), closing a coil KM1.1 of a direct current contactor KM1, turning on coils KA1.1 and KA2.1 of intermediate relays KA1 and KA2, turning on an indicator HL1 lamp, pressing an SB2 button to turn on a voltage relay KV2 (KV 2 normally open contact KV2.2 self protection), turning on a coil KM3.1 of the direct current contactor KM3, turning on coils KA3.1 and KA4.1 of intermediate relays KA3 and KA4, turning on an indicator HL3 lamp, pressing a SB3 button to turn on a voltage relay KV3 (KV 3 normally open contact KV3.2 self protection), turning on a coil KM5.1 of a direct current contactor KM5, turning on a coil KA5.1 of the intermediate relay, turning on a lamp HL5 lamp, and then turning on the total breaker and the direct current contactors KM, 6342 and KM2 are in separated states.
The utility model discloses divide into three kinds of circumstances at abnormal operating condition time: 1) when the direct current panel 1 is in fault, when the first standby power supply 2 and the second standby power supply 3 operate normally, the direct current contactor KM1 and the intermediate relays KA1 and KA2 are disconnected due to the power loss action of the voltage relay KV1, and the auxiliary points of the direct current contactor KM1 and the intermediate relays KA1 and KA2 are restored to be normal, for example, in fig. 4, the power passes through the breaker QF from the positive electrode of the first standby power supply 2, then passes through the normally open contact of KM1, and then passes through the normally open contact of the direct current contactor KM3 (closing point at this time due to the attraction of KM 8 686), and then passes through the normally closed contact of KA2, the coil of the direct current contactor KM2 and KM4, and the indicator lamps HL2 and HL4, and then passes through the normally closing point of the direct current contactor KM 4642 and the normally open point of KM3 (attraction of the indicator lamps because of KM3, closing point at this time) to the negative electrode of the first standby power supply 2 to form a loop, when the direct current contactor 2 and KM 585, the attraction of the indicator lamps are lighted, and the indicator lamps HL 4624, the first backup power source 2 supplies power to the dc panel load through the dc contactors KM3, KM4, and KM2.
2) When the storage battery of the first backup power supply 2 has a fault, when the direct current panel 1 and the second backup power supply 3 operate normally, the direct current contactor KM3 and the intermediate relays KA3 and KA4 are disconnected due to the power loss action of the voltage relay KV2, and the auxiliary points of the direct current contactor KM3 and the intermediate relays KA3 and KA4 are restored to be normalized, for example, in fig. 4, electricity passes through the breaker QF from the positive electrode of the direct current panel 1, then passes through the normally open contact of the KM 356 (due to the attraction of KM1, which is a closing point), then passes through the normally closed contact of the direct current contactor KM3, then passes through the normally closed contact of the KA4, passes through the coil of the direct current contactor KM2 and KM4 and the indicator lamps HL2 and HL4, passes through the normally closed point of the direct current contactor KM3 and the normally open point of the KM1 (due to the attraction of the KM1, which is a closing point), and then forms a loop to the negative electrode of the direct current panel 1, when the fault occurs, the direct current contactor HL 63sa 24, KM4, the attraction of the indicator lamps KM4, the indicator lamps KM2, The KM2 and KM4 provide power to UPSA loads.
When the storage battery of the third backup power supply 3 has a fault, when the direct current panel 1 and the first backup power supply 2 operate normally, the direct current contactor KM5 and the intermediate relay KA5 are disconnected due to the power loss action of the voltage relay KV3, and the auxiliary point of the direct current contactor KM5 and the intermediate relay KA5 is restored to be normal, for example, in fig. 4, electricity passes through the breaker QF from the positive electrode of the direct current panel 1, then passes through the normally open contact of the KM1 (closed point at this time due to the attraction of KM 1), then passes through the normally closed contact of the direct current contactor KM5, then the normally closed contact of the KA5, passes through the coil of the direct current contactor KM2 and KM6, and the indicator lamps HL2 and HL6, passes through the normally closed point of the direct current contactor KM5 and the normally open point of the KM1 (closed point at this time due to the attraction of KM 1), then the closed point) forms a loop to the negative electrode of the direct current panel 1, the attraction of the direct current contactor KM2 and the attraction of the HL6, the indicator lamps 2 and the il 6, when the fault current contactor KM1, The KM2 and KM6 supply power to UPSB loads.
3) The utility model discloses specifically in the embodiment each other is for reserve through waste heat power generation one side direct current cabinet and two UPS, direct current screen 1 provides the power for high-pressure 6KV cubical switchboard control and combined floodgate during normal power supply, UPSA provides the power for well accuse backstage computer through the DC-to-ac converter, UPSB provides the power for the IO cabinet through the DC-to-ac converter, after direct current screen 1 charging module and battery trouble, UPSA exports DC220V control power to direct current screen 1 cubical switchboard, the big power loss of power station back has been avoided, the unable normal start of direct current lubricant pump, heavy accident such as the axle bush strain is because of not having lubricating oil under the on-the-spot generator high speed condition.
About the utility model discloses what the concrete structure need explain, the utility model discloses a each part module connection relation each other is definite, realizable, except that the special explanation in the embodiment, its specific connection relation can bring corresponding technological effect to based on do not rely on under the prerequisite of corresponding software program execution, solve the utility model provides a technical problem, the utility model provides a model, the connection mode of parts, module, specific components and parts that appear all belong to the prior art such as the published patent that technical staff can acquire before the application day, published journal paper, or common general knowledge, need not to describe in detail for the technical scheme that the present case provided is clear, complete, realizable, and can be according to this technical means or obtain corresponding entity product.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. DC lubricating pump stand-by power supply control system, including direct current screen (1), its characterized in that: the direct current power supply device is characterized by further comprising a first standby power supply (2) and a second standby power supply (3), batteries are arranged in the direct current screen (1), the first standby power supply (2) and the second standby power supply (3), a battery outlet end of the direct current screen (1) is connected with an inlet end of a direct current contactor KM1 through a lead, and an outlet end of a direct current contactor KM1 is connected with an inlet end of the direct current contactor KM2 and a power supply end of a first load (4) through leads;
the battery outlet end of the first standby power supply (2) is connected with the inlet end of the direct current contactor KM3 through a lead, and the outlet end of the direct current contactor KM3 is respectively connected with the inlet end of the direct current contactor KM4 and the power supply end of the second load (5) through leads;
a battery outlet end of the second standby power supply (3) is connected with an inlet end of a direct current contactor KM5 through a lead, and an outlet end of the direct current contactor KM5 is respectively connected with an inlet end of the direct current contactor KM6 and a power supply end of a third load (6) through leads;
the outlet end of the direct current contactor KM2 is connected with the outlet end of the direct current contactor KM4 in parallel through a lead and then is connected with the outlet end of the direct current contactor KM 6;
the first standby power supply (2) is used for supplying power to a first load (4) through a direct current contactor KM3, a direct current contactor KM4 and a direct current contactor KM2 when the direct current screen (1) fails;
the direct current screen (1) is used for supplying power to a second load (5) through a direct current contactor KM1, a direct current contactor KM2 and a direct current contactor KM4 and supplying power to a second standby power supply (3) through a direct current contactor KM1, a direct current contactor KM2 and a direct current contactor KM6 when the first standby power supply (2) fails.
2. The system of claim 1, wherein: the positive and negative electrodes of the battery outlet end of the direct current screen (1) are respectively provided with a fuse FU1 and a fuse FU2, the positive and negative electrodes of the battery outlet end of the first standby power supply (2) are respectively provided with a fuse FU3 and a fuse FU4, and the positive and negative electrodes of the battery outlet end of the second standby power supply (3) are respectively provided with a fuse FU5 and a fuse FU 6;
the direct current panel (1), the first standby power supply (2) and the second standby power supply (3) are respectively provided with a voltage relay KV1, a voltage relay KV2 and a voltage relay KV3 at battery outlet ends, an intermediate relay KA1 and an intermediate relay KA2 are further arranged on the battery outlet end of the direct current panel (1), an intermediate relay KA3 and an intermediate relay KA4 are further arranged on the battery outlet end of the first standby power supply (2), and an intermediate relay KA5 is further arranged on the battery outlet end of the second standby power supply (3);
the coil of the direct current contactor KM1 is KM1.1, the normally open contacts are KM1.2 and KM1.5, the normally closed contacts are KM1.3 and KM1.4, the coil of the direct current contactor KM2 is KM2.1, the coil of the direct current contactor KM3 is KM3.1, the normally open contacts are KM3.2 and KM3.5, the normally closed contacts are KM3.3 and KM3.4, the coil of the direct current contactor KM4 is KM4.1, the coil of the direct current contactor KM5 is KM5.1, the normally open contacts are KM5.2 and KM5.5, the normally closed contacts are KM5.3 and KM5.4, and the coil of the direct current contactor KM6 is KM 6.1;
the coil of the voltage relay KV1 is KV1.1, the normally open contact is KV1.2, the coil of the voltage relay KV2 is KV2.1, the normally open contact is KV2.2, the coil of the voltage relay KV3 is KV3.1, and the normally open contact is KV 3.2;
the coil of the intermediate relay KA1 is KA1.1, normally closed contacts are KA1.3 and KA1.4, the coil of the intermediate relay KA2 is KA2.1, normally closed contacts are KA2.3 and KA2.4, the coil of the intermediate relay KA3 is KA3.1, normally closed contacts are KA3.3 and KA3.4, the coil of the intermediate relay KA4 is KA4.1, normally closed contacts are KA4.3 and KA4.4, the coil of the intermediate relay KA5 is KA5.1, and normally closed contacts are KA 5.3;
the positive electrode of a battery outlet end of the direct current screen (1) is connected in series with a fuse FU1 and then is connected in parallel with one end of a button SB1 and one end of a button SB4 through a lead, the other end of the button SB4 is connected in series with a normally open contact KV1.2 and then is connected in parallel with the other end of a button SB1, one end of a coil KV1.1, one end of a coil KM1.1, one end of a coil KA2.1 and one end of an indicator lamp HL1, the other end of the coil KV1.1, the other end of the coil KM1.1, the other end of the coil KA2.1 and the other end of the indicator lamp HL1 are connected in parallel through leads and then are connected with one end of the fuse FU2, and the other end of the fuse FU2 is connected with the negative electrode of the battery outlet;
the positive electrode of the battery outlet end of the first standby power supply (2) is connected in series with a fuse FU3 and then is connected in parallel with one end of a button SB2 and one end of a button SB5 through a lead, the other end of the button SB5 is connected in series with a normally open contact KV2.2 and then is connected in parallel with the other end of the button SB2, one end of a coil KV2.1, one end of a coil KM3.1, one end of a coil KA4.1 and one end of an indicator lamp HL3, the other end of the coil KV2.1, the other end of the coil KM3.1, the other end of the coil KA4.1 and the other end of the indicator lamp HL3 are connected in parallel through leads and then are connected with one end of the fuse FU4, and the other end of the fuse FU4 is connected with the negative electrode of the battery outlet;
the battery leading-out terminal positive pole of second stand-by power supply (3) concatenates fuse FU5 after parallelly connected through wire and button SB 3's one end, button SB 6's one end, the other end of button SB6 is parallelly connected with button SB 3's the other end, coil KV 3.1's one end, coil KM 5.1's one end, coil KA 5.1's one end, pilot lamp HL 5's one end behind the other end series connection normally open contact KV3.2, the other end of coil KV3.1, the other end of coil KM5.1, the other end of coil KA5.1, the other end of pilot lamp HL5 pass through the wire and connect the back and link to each other with fuse FU 6's one end, fuse FU 6's the other end passes through the wire and links to each other with the battery leading-out terminal negative pole.
3. The system of claim 2, wherein: the wire outlet ends of a fuse FU1 of the direct current screen (1), a fuse FU3 of the first standby power supply (2) and a fuse FU5 of the second standby power supply (3) are respectively connected with the wire inlet end of a main breaker QF through wires, the first wire outlet end of the main breaker QF is connected with one end of a normally open contact KM1.2 through a wire, and the other end of the normally open contact KM1.2 is connected with one end of a normally closed contact KM3.3 and one end of a normally closed contact KM5.3 in parallel through wires;
a second wire outlet end of the main breaker QF is connected with a normally closed contact KM1.3 in series through a lead and then is connected with one end of a normally open contact KM 3.2;
a third outlet end of the main breaker QF is connected with a normally open contact KM5.2 and a normally closed contact KA3.3 in series through a lead and then is connected with one end of the normally closed contact KA 1.3;
the other end of the normally closed contact KM3.3 is respectively connected in parallel with the other end of the normally closed contact KM5.3, the other end of the normally open contact KM3.2, the other end of the normally closed contact KA1.3, one end of the normally closed contact KA2.3, one end of the normally closed contact KA4.3, one end of the normally closed contact KA5.3, one end of the normally closed contact KA4.4, one end of the coil KM2.1 and one end of the indicator lamp HL2 through leads;
the other end of the normally closed contact KA2.3 is connected in parallel with the other end of the normally closed contact KA4.3, one end of the coil KM4.1 and one end of the indicator lamp HL4 through a lead;
the other end of the normally closed contact KA4.4 is connected with one end of the normally closed contact KA2.4 through a lead, and the other end of the normally closed contact KA2.4 is connected with the other end of the normally closed contact KA5.3, one end of the coil KM6.1 and one end of the indicator lamp HL6 in parallel through leads;
the other end of the coil KM2.1 is respectively connected in parallel with the other end of the indicator lamp HL2, the other end of the coil KM4.1, the other end of the indicator lamp HL4, the other end of the coil KM6.1, the other end of the indicator lamp HL6, one end of the normally closed contact KM3.4, one end of the normally closed contact KM5.4, one end of the normally closed contact KM1.4 and one end of the normally open contact KM5.5 through leads;
the other end of the normally closed contact KM3.4 is connected with the other end of the normally closed contact KM5.4 through a wire, is connected in parallel with the normally open contact KM1.5, and then is connected to an outlet end of a fuse FU2 of the direct current screen (1);
the other end of the normally closed contact KM1.4 is connected in series with a normally open contact KM3.5 and then is connected to an outlet end of a fuse FU4 of the first standby power supply (2);
the other end of the normally open contact KM5.5 is connected in series with a normally closed contact KA3.4 and a normally closed contact KA1.4 and then is connected to an outlet end of a fuse FU6 of the second standby power supply (3).
4. The system of claim 3, wherein: the first load (4) is specifically set as a switch control cabinet for controlling the on-off and the closing of a direct-current lubricating pump of the waste heat power station;
the second load (5) is specifically set as a central control background PC end for monitoring the running condition of the waste heat power station, and the first standby power supply (2) supplies power to the central control background PC end through an inverter;
the third load (6) is specifically set to be an IO control cabinet connected with the central control background PC end, and the second standby power supply (3) supplies power to the IO control cabinet through an inverter.
5. The system of claim 4, wherein: the first standby power supply (2) and the second standby power supply (3) are specifically set as UPS power supplies.
6. The system of claim 5, wherein: the batteries in the first standby power supply (2) and the second standby power supply (3) are all set to be a plurality of storage batteries connected in series.
7. The system of claim 6, wherein: the indicator lamp HL1 is used for displaying the normal power supply state of the direct current screen (1), and the indicator lamp HL2 is used for displaying the fault power supply state of the direct current screen (1);
the indicator lamp HL3 is used for displaying the normal power supply state of the first standby power supply (2), and the indicator lamp HL4 is used for displaying the fault power supply state of the first standby power supply (2);
the indicator lamp HL5 is used for displaying the normal power supply state of the second standby power supply (3), and the indicator lamp HL6 is used for displaying the fault power supply state of the second standby power supply (3);
the indicator lamp HL1, the indicator lamp HL2, the indicator lamp HL3, the indicator lamp HL4, the indicator lamp HL5 and the indicator lamp HL6 are all arranged on an operation panel of the direct current screen (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022356978.5U CN213402454U (en) | 2020-10-21 | 2020-10-21 | Standby power supply control system of direct current lubricating pump |
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|---|---|---|---|
| CN202022356978.5U CN213402454U (en) | 2020-10-21 | 2020-10-21 | Standby power supply control system of direct current lubricating pump |
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| CN213402454U true CN213402454U (en) | 2021-06-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112165094A (en) * | 2020-10-21 | 2021-01-01 | 威顿水泥集团有限责任公司 | Control system and control method for standby power supply of direct-current lubricating pump |
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2020
- 2020-10-21 CN CN202022356978.5U patent/CN213402454U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112165094A (en) * | 2020-10-21 | 2021-01-01 | 威顿水泥集团有限责任公司 | Control system and control method for standby power supply of direct-current lubricating pump |
| CN112165094B (en) * | 2020-10-21 | 2024-07-26 | 威顿水泥集团有限责任公司 | Standby power supply control system and control method for direct-current lubrication pump |
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