CN212027966U - Standby starting system of diesel generating set - Google Patents
Standby starting system of diesel generating set Download PDFInfo
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- CN212027966U CN212027966U CN201922488468.0U CN201922488468U CN212027966U CN 212027966 U CN212027966 U CN 212027966U CN 201922488468 U CN201922488468 U CN 201922488468U CN 212027966 U CN212027966 U CN 212027966U
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Abstract
The utility model discloses a reserve start-up system of diesel generating set belongs to diesel generating set start control system technical field. The system comprises a generator set control system PLC and a generator G, wherein the generator set control system PLC is connected with the generator G to form a control system voltage measurement loop U and a control system current measurement loop I; the starting device further comprises a starting motor M, a storage battery pack BAT, a starting mode selection changeover switch SA1, a spare manual ignition key ES, a mode contactor coil KM1, a first normally open contact KM2 of the mode contactor, a second normally closed contact KM3 of the mode contactor, a first starting relay coil K1, a first starting relay normally open contact K2, a second starting relay coil S1 and a second starting relay normally open contact S2. By adding the standby starting system on the basis of the original control system, the diesel generator set can immediately recover power supply through manual simple operation after the intelligent control system breaks down, and the normal use of the diesel generator set is ensured.
Description
Technical Field
The utility model relates to a reserve start-up system of diesel generating set belongs to diesel generating set start control system technical field.
Background
Along with the development of the society, in order to ensure that people's life and lives and properties are not influenced by power failure, the requirement on the reliability of power supply is further improved, and when a municipal power grid power failure accident happens, a standby diesel generator set is started to continue to supply power so as to ensure that the production and life of people can be normally carried out.
At present, an electronic intelligent control system is mostly adopted for controlling the starting and the running of a diesel generator set, namely, when power failure occurs, a standby generator is started and run by an intelligent controller and a control loop, and the intelligent control system has the advantages that the control loop integrates intellectualization, digitization and networking technologies, and the defect is that after the intelligent control system breaks down, people need to maintain and check the intelligent control system, in the process, the diesel generator set can not recover power supply at once, so that some adverse effects can be caused to production life, such as standby lighting, standby water supply, heat supply and the like.
Disclosure of Invention
The utility model discloses to the demand that above-mentioned, provide a simple structure, can realize the reserve starting system of quick start diesel generating set power supply behind the former intelligent control system trouble.
The utility model discloses the technical problem that will solve takes following technical scheme to realize:
a standby starting system of a diesel generating set comprises a generating set control system PLC and a generator G, wherein the generating set control system PLC is connected with the generator G to form a control system voltage measurement loop U and a control system current measurement loop I; the starting device also comprises a starting motor M, a storage battery pack BAT, a starting mode selection transfer switch SA1, a standby manual ignition key ES, a mode contactor coil KM1, a first normally open contact KM2 of the mode contactor, a second normally closed contact KM3 of the mode contactor, a first starting relay coil K1, a first starting relay normally open contact K2, a second starting relay coil S1 and a second starting relay normally open contact S2;
the starting mode selection changeover switch SA1 comprises a No. 1 terminal, a No. 2 terminal, a No. 3 terminal and a No. 4 terminal;
the positive terminal of the storage battery BAT is connected to the No. 1 terminal and the No. 3 terminal of the starting mode selection changeover switch SA1 respectively, the negative terminal of the storage battery BAT is connected to the negative electrode of the PLC automatic starting output end of the generator set control system, and the No. 2 terminal of the starting mode selection changeover switch SA1 is connected to the positive electrode of the PLC automatic starting output end of the generator set control system;
a terminal No. 4 of the starting mode selection changeover switch SA1 is connected with a terminal 30 of a spare manual ignition key ES, an AC terminal of the spare manual ignition key ES is connected with a mode contactor coil KM1 in series and then connected with a negative terminal of the starting motor M, and a terminal 50 of the spare manual ignition key ES is connected with a second starting relay coil S1 in series and then also connected with the negative terminal of the starting motor M;
the positive and negative terminals of the starting motor M are respectively connected to the positive and negative terminals of the battery pack BAT, and a second starting relay normally open contact S2 is connected between the positive terminals of the starting motor M and the battery pack BAT;
and one end of the first starting relay coil K1 is connected to a PLC current detection end of the generator set control system, and the other end of the first starting relay coil K1 is connected to a negative electrode end of the storage battery BAT.
When the generator set control system PLC is normal, a No. 1 terminal and a No. 2 terminal of a starting mode selection transfer switch SA1 are communicated, the automatic starting output end of the generator set control system PLC is normal, the negative pole sends a current signal to a storage battery BAT, meanwhile, a first starting relay coil K1 is electrified, a first starting relay normally open contact K2 is closed, a second starting relay coil S1 is electrified, a second starting relay normally open contact S2 is closed, the positive pole and the negative pole of the storage battery BAT are communicated with the positive pole and the negative pole of a starting motor M, the starting motor M is started, and a generator starts to run.
When the PLC of the generator set control system fails, an electric signal cannot be output to a storage battery pack BAT, a first starting relay coil K1 is powered off, a first starting relay normally open contact K2 is kept disconnected, a standby mode is started, a No. 3 terminal of a starting mode selection changeover switch SA1 is communicated with a No. 4 terminal, a standby manual ignition key ES is manually operated, a 30 terminal is communicated with a 50 terminal, meanwhile, a second starting relay coil S1 is powered on, a second starting relay normally open contact S2 is closed, the positive electrode and the negative electrode of the storage battery pack BAT are communicated with the positive electrode and the negative electrode of a starting motor M, and after the starting motor M is started, the standby manual ignition key ES is screwed to an AC end and.
The standby manual ignition key ES is turned to the AC end and is kept, the coil KM1 of the mode contactor is electrified, the first normally closed contact KM3 of the mode contactor is disconnected, and the control system current measurement loop I is disconnected; meanwhile, after the first normally open contact KM2 of the mode contactor is closed, the mode contactor is connected with the current conversion switch SA3 and the alternating current pointer meter A in series, so that a current measuring loop is connected for measuring and indicating the current of the diesel generating set in the standby mode.
As a preferable example, the original control system voltage measurement loop U is connected with a voltage conversion switch SA2, an alternating voltage pointer table V and a frequency pointer table Hz in parallel and used for measuring and indicating the voltage and the frequency of the diesel generating set in the standby mode.
The utility model has the advantages that: on the basis of the original control system, a standby starting system capable of quickly starting the diesel generating set to supply power after the original intelligent control system fails is added, so that the diesel generating set can be immediately restored to supply power after the intelligent control system fails through simple manual operation, and the normal use of the diesel generating set is ensured.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention;
in the figure: the system comprises a generator set control system PLC, a generator G, a starting mode selection changeover switch SA1, a mode voltage changeover switch SA2, a mode current changeover switch SA3, an alternating voltage pointer table V, a frequency pointer table Hz, an alternating current pointer table A, a mode contactor coil KM1, a first normally open contact KM2 of the mode contactor, a second normally closed contact KM3 of the mode contactor, a first starting relay coil K1, a first starting relay normally open contact K2, a second starting relay coil S1, a second starting relay normally open contact S2, an ignition key ES, a starting motor M, a storage battery pack BAT, a control system voltage measurement loop U and a control system current measurement loop I.
Detailed Description
In order to make the technical means, the creation features, the achievement purposes and the functions of the present invention easy to understand and understand, the present invention is further explained by combining the following specific drawings.
As shown in fig. 1, a standby starting system of a diesel generator set comprises a generator set control system PLC and a generator G, wherein the generator set control system PLC is connected with the generator G to form a control system voltage measurement loop U and a control system current measurement loop I; the starting device also comprises a starting motor M, a storage battery pack BAT, a starting mode selection transfer switch SA1, a standby manual ignition key ES, a mode contactor coil KM1, a first normally open contact KM2 of the mode contactor, a second normally closed contact KM3 of the mode contactor, a first starting relay coil K1, a first starting relay normally open contact K2, a second starting relay coil S1 and a second starting relay normally open contact S2;
the starting mode selection change-over switch SA1 comprises a No. 1 terminal, a No. 2 terminal, a No. 3 terminal and a No. 4 terminal, wherein when the No. 1 terminal is communicated with the No. 2 terminal, the generator set is normally started, and when the No. 3 terminal is communicated with the No. 4 terminal, the generator set is emergently started;
the positive terminal of the storage battery BAT is connected to the No. 1 terminal and the No. 3 terminal of the starting mode selection changeover switch SA1 respectively, the negative terminal of the storage battery BAT is connected to the negative electrode of the PLC automatic starting output end of the generator set control system, and the No. 2 terminal of the starting mode selection changeover switch SA1 is connected to the positive electrode of the PLC automatic starting output end of the generator set control system;
a terminal No. 4 of the starting mode selection changeover switch SA1 is connected with a terminal 30 of a spare manual ignition key ES, an AC terminal of the spare manual ignition key ES is connected with a mode contactor coil KM1 in series and then connected with a negative terminal of the starting motor M, and a terminal 50 of the spare manual ignition key ES is connected with a second starting relay coil S1 in series and then also connected with the negative terminal of the starting motor M;
the positive and negative terminals of the starting motor M are respectively connected to the positive and negative terminals of the battery pack BAT, and a second starting relay normally open contact S2 is connected between the positive terminals of the starting motor M and the battery pack BAT;
one end of a first starting relay coil K1 is connected to a current detection end of a PLC of the generator set control system, and the other end of the first starting relay coil K1 is connected to a negative electrode end of a BAT.
The working principle is as follows:
under generating set normal operating, start mode selection change over switch SA 1' S terminal No. 1 communicates with No. 2 terminal, generating set control system PLC automatic start output is just, the negative pole is to storage battery BAT outgoing current signal, first start relay coil K1 is electrified simultaneously, first start relay normally open contact K2 is closed, second start relay coil S1 is electrified, second start relay normally open contact S2 is closed, storage battery BAT positive negative pole and the positive negative pole intercommunication of starter motor M, starter motor M starts, the generator starts the operation.
When the PLC of the generator set control system fails, an electric signal cannot be output to a storage battery pack BAT, a first starting relay coil K1 is powered off, a first starting relay normally open contact K2 is kept disconnected, a standby mode is started, a No. 3 terminal and a No. 4 terminal of a starting mode selection changeover switch SA1 are communicated, a standby manual ignition key ES is manually operated, a terminal 30 is communicated with a terminal 50, meanwhile, a second starting relay coil S1 is powered on, a second starting relay normally open contact S2 is closed, the positive electrode and the negative electrode of the storage battery pack BAT are communicated with the positive electrode and the negative electrode of a starting motor M, the starting motor M is started, and a generator is started to.
Turning a spare manual ignition key ES to an AC end and keeping the spare manual ignition key ES, electrifying a coil KM1 of the mode contactor, disconnecting a first normally closed contact KM3 of the mode contactor, and disconnecting a control system current measurement loop I; meanwhile, after the first normally open contact KM2 of the mode contactor is closed, the mode contactor is connected with a current conversion switch SA3 and an alternating current pointer meter A in series, so that a current measurement loop is connected for measuring and indicating the current of the diesel generator set in the standby mode; the voltage change-over switch SA2, the alternating voltage pointer meter V and the frequency pointer meter Hz are connected in parallel with the original control system voltage measuring circuit and are used for measuring and indicating the voltage and the frequency of the diesel generating set in the standby mode.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. Without departing from the spirit and scope of the present invention, there are also provided various changes and modifications that fall within the scope of the claimed invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A standby starting system of a diesel generating set comprises a generating set control system PLC and a generator G, wherein the generating set control system PLC is connected with the generator G to form a control system voltage measurement loop U and a control system current measurement loop I, and the standby starting system is characterized by further comprising a starting motor M, a storage battery pack BAT, a starting mode selection changeover switch SA1, a standby manual ignition key ES, a mode contactor coil KM1, a mode contactor first normally open contact KM2, a mode contactor second normally closed contact KM3, a first starting relay coil K1, a first starting relay normally open contact K2, a second starting relay coil S1 and a second starting relay normally open contact S2;
the starting mode selection changeover switch SA1 comprises a No. 1 terminal, a No. 2 terminal, a No. 3 terminal and a No. 4 terminal;
the positive terminal of the storage battery BAT is connected to the No. 1 terminal and the No. 3 terminal of the starting mode selection changeover switch SA1 respectively, the negative terminal of the storage battery BAT is connected to the negative electrode of the PLC automatic starting output end of the generator set control system, and the No. 2 terminal of the starting mode selection changeover switch SA1 is connected to the positive electrode of the PLC automatic starting output end of the generator set control system;
a terminal No. 4 of the starting mode selection changeover switch SA1 is connected with a terminal 30 of a spare manual ignition key ES, an AC terminal of the spare manual ignition key ES is connected with a mode contactor coil KM1 in series and then connected with a negative terminal of the starting motor M, and a terminal 50 of the spare manual ignition key ES is connected with a second starting relay coil S1 in series and then also connected with the negative terminal of the starting motor M;
the positive and negative terminals of the starting motor M are respectively connected to the positive and negative terminals of the battery pack BAT, and a second starting relay normally open contact S2 is connected between the positive terminals of the starting motor M and the battery pack BAT;
and one end of the first starting relay coil K1 is connected to a PLC current detection end of the generator set control system, and the other end of the first starting relay coil K1 is connected to a negative electrode end of the storage battery BAT.
2. The standby starting system of a diesel generator set according to claim 1, wherein the voltage measuring circuit U of the control system is connected with a voltage conversion switch SA2, an alternating voltage pointer gauge V and a frequency pointer gauge Hz in parallel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922488468.0U CN212027966U (en) | 2019-12-30 | 2019-12-30 | Standby starting system of diesel generating set |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922488468.0U CN212027966U (en) | 2019-12-30 | 2019-12-30 | Standby starting system of diesel generating set |
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| CN212027966U true CN212027966U (en) | 2020-11-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116846153A (en) * | 2023-07-11 | 2023-10-03 | 深圳市西林电气技术有限公司 | Motor drive control device and control method |
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2019
- 2019-12-30 CN CN201922488468.0U patent/CN212027966U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116846153A (en) * | 2023-07-11 | 2023-10-03 | 深圳市西林电气技术有限公司 | Motor drive control device and control method |
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