Locomotive diesel starting system

FIELD: engines and pumps.

SUBSTANCE: proposed system comprises storage battery, device to disconnected the latter from onboard circuit, electric starter, starting contactor terminals, capacitive power accumulator made up of capacitors interconnected in series or in parallel. Charge circuit of said power accumulator comprises current-limiting resistor and diode to shunt said resistor. System includes also additional contactor with closing contacts to connect storage battery with said capacitive power accumulator prior to starting locomotive diesel engine, contactor with closing contacts, transducers of accumulator charge current and voltage, controlled rectifier of accumulator charge, unit to generate and indicate charge voltage, and pulse-phase control unit. Said accumulator is connected to controlled rectifier output via contactor with closing contacts. Rectifier power input is connected to charge generator output. Voltage transducer is connected parallel with power accumulator. Outputs of current and voltage transducers are connected with voltage generation unit input and indication unit input. Output of voltage generation unit is connected to pulse-phase control unit with its output connected to control input of controlled rectifier. Capacitive power accumulator is charged automatically without interference of engine crew after starting of locomotive diesel. Charge indication unit allows visual control over charge current and voltage.

EFFECT: higher reliability and longer life, automated charging.

1 dwg

 

The invention relates to the starting of the engines of locomotives and other vehicles electric motors, combined with traction generators, and relates to electric circuits adapted to start the engine, and can be used for the modernization of the main and shunting locomotives of all series.

Known starting system diesel locomotive with a battery of capacitors ultra high capacity, containing the charge circuit of the capacitor with a resistor and a thyristor control electrode which is connected to the closing contact of the regular button "start diesel locomotive (application WO 93/18300, CL F02N 11/08, publ. 1993).

The main disadvantage of the system is the possibility of inadvertent opening of the thyristor from electromagnetic interference or accidental pressing on the button "start diesel, resulting in the voltage on the capacitive energy storage, charging, while the diesel from the charging generator becomes higher than the nominal. This reduces the service life of the capacitors and can cause their failure.

Known starting system diesel locomotive contains a rechargeable battery the battery is disconnected from the electrical system of the locomotive, traction alternator, standard pad contacts through which the voltage at which abuse is supplied to the traction alternator, capacitive energy storage in the charge circuit that includes a thyristor and a current-limiting resistor, a diode, a shunt circuit charge during the flow of the discharge current of the capacitive energy store, a contact element to turn on the thyristor, contact switch supply circuit capacitive energy storage and discharge resistor connected to the capacitive storage device and the contact element to turn on the thyristor made in the form of a separate switch on the same panel with charge indicator and switch power circuit of the energy storage devices, and the panel is made with possibility of installation in high voltage chamber of a diesel locomotive (patent RU №2189324 C1, CL F02N 11/08, 2002).

The main disadvantage of the system is the probability that the enabled state of charge circuit capacitive energy storage after starting the diesel engine, and you can manually disable this circuit) and, as a consequence, the possibility of unauthorized opening of the thyristor with the subsequent charge of the drive to the high voltage produced by the charging generator. Accordingly, this leads to reduced resource capacitive energy storage and may cause its failure.

Known starting system diesel locomotive adopted for the prototype, containing the battery, the device QCD is Uchenie the battery from the electrical system of the locomotive, the starter, which is used as a starter-generator or traction alternator, starter contactors, through the contacts which the voltage when start goes to the starter, the capacitive energy storage device made in the form of parallel or parallel-series connected capacitor with a double electric layer, a charge circuit that includes a current-limiting resistor, and diode, shunt current-limiting resistor when current flows discharge of the energy storage device, and is provided with an additional contactor contact closure, the first of which is included in the charge circuit of capacitive energy storage, and control relay, the winding of which is connected to the capacitive energy storage device through the contact of the starting contactor while the additional winding of the contactor is connected to the electrical system of the locomotive through the serially connected normally closed contacts of the control relay, and additionally introduced the first switch with NC contact and the second switch make contact, in parallel to which is included a second normally open contact of an additional contactor. Parallel current-limiting resistor connected to the light indicator of the presence of charging current capacitive energy storage, and parallel to the winding of additional contactor - luminous and is dicator included the state of charge circuit (patent RU №2253079 C1, CL F02N 11/04, 2006).

The main disadvantage of the system is the probability that the enabled state of charge circuit capacitive energy storage after starting the diesel early pressing the "start diesel (a visual control of the process of the termination charge capacitive energy storage with subsequent wait 30 to 60 seconds), followed by the charge of the drive to the high voltage produced by the charging generator. Accordingly, this leads to reduced resource capacitive energy storage and may cause its failure.

The technical result of the invention is to increase the reliability and life of the system run on diesel, as well as the improvement of conditions of service of the locomotive due to the full automation of the process of charging the capacitive energy store.

This technical result is achieved by the fact that the starting system diesel locomotive contains a rechargeable battery the battery is disconnected from the electrical system of the locomotive, electric starter, which is used as a traction alternator, the contacts of the starting contactor through which the voltage when start goes to the starter, the capacitive energy storage device made in the form of parallel or parallel-series connected capacitors, the charge circuit that includes a current-limiting resistor, and the diode, shunt current-limiting resistor when current flows discharge capacitive energy storage, additional contactor from closing the contacts that connect the battery to the capacitive energy storage before starting the diesel locomotive is equipped with a contactor contact closure, current sensors and voltage capacitive energy storage, controlled rectifier charge capacitive energy storage unit set the voltage and indication of charging of capacitive energy storage unit pulse-phase control, with capacitive energy storage using contactor contact closure connected through the current sensor to the output of the rectifier, the power input of which is connected to the output of the charging generator, in parallel to a capacitive energy store connected to the sensor voltage, the output of the current sensor and the sensor output voltage is connected to the input of block set voltage and to the input of the display unit, the output unit jobs voltage is connected to the unit pulse-phase control, the output of which is connected with the control input of the controlled rectifier.

The drawing shows a diagram of the starting system diesel locomotive.

The system contains a battery 1, the device 2 disconnect the battery 1 from b is revoy network (BS) of the locomotive (not shown), the starter 3, which is used as a traction alternator, the contacts of the starting contactor 4, through which the voltage when start goes to the starter 3, the capacitive energy storage device 5, made in the form of parallel or parallel-series connected capacitors, the charge circuit that includes a current-limiting resistor 6 and the diode 7, the shunt current-limiting resistor 6, when the flow of discharge current capacitive energy storage 5, an additional contactor 8 contact closure that connect the battery 1 to the capacitive energy storage device 5 before starting the diesel locomotive. Capacitive energy storage device 5 through the contactor 9 contact closure connected through the current sensor 10 of the capacitive charge of the energy accumulator 5 to the output of the rectifier 11 charging the capacitive energy accumulator 5, the power input of which is connected to the output of the charging generator 12, in parallel to a capacitive energy storage device 5 is connected to the voltage detector 13 charge capacitive energy storage 5. The output of the current sensor 10 and the sensor output voltage 13 is connected to the input unit 14 set the charge voltage of the capacitive energy accumulator 5 and the input unit 15 indicating charge capacitive energy storage 5. The output unit 14 set the voltage of the charge capacitor storage e is ergie 5 is connected to the input unit 16 pulse-phase control, the output of which is connected with the control input of the controlled rectifier 11.

The proposed starting system diesel locomotive works as follows.

The battery 1 is connected to the electrical system of the locomotive through the device 2. Next, press the push-button "start diesel (not shown)through which closes the circuit to the auxiliary power contactor 8, the contacts of which, hinging connect the battery 1 to the capacitive energy storage device 5, is the charge of the capacitive energy storage device 5 through the current limiting resistor 6 to the voltage of the battery 1, which is limited to the time of work produced pump (not shown). Upon completion of the work produced pump closed contacts of the starting contactor 4, through which the combined voltage of the power source in the form of parallel connected batteries 1 and capacitive energy storage 5 through the diode 7 is supplied to the starter 3.

After starting the diesel engine, the contacts of the starting contactor 4 and the additional contacts of the contactor 8 is open, disabling capacitive energy storage device 5 from 3 starter and battery 1, and the closed contacts of contactor 9, thereby connecting the capacitive energy storage device 5 through the current sensor 10 to the output from the monitor rectifier 11 charge capacitive energy storage 5.

From the output of the voltage detector 13, is connected in parallel to a capacitive energy storage device 5, a signal proportional to the voltage of the capacitive energy storage device 5, is fed to the input unit 14 set the charge voltage of the capacitive energy accumulator 5, in block 14, the signal proportional to the voltage of the capacitive energy storage device 5, is compared with a predetermined maximum setpoint voltage capacitive energy storage 5, the result of the comparison is fed to the input block 16 pulse-phase control, amplify and output unit 16 pulse-phase control serves to control inputs of the rectifier 11, carry out photoimpulse management of this controlled rectifier begins to charge capacitive the energy accumulator 5. From the output of the current sensor 10, the signals proportional to the current charge of capacitive energy storage device 5, is fed to the input unit 14 set the charge voltage of the capacitive energy accumulator 5, in block 14 set the charge voltage of the capacitive energy store 5 compares a signal proportional to the charging current of the capacitive energy accumulator 5, with predetermined minimum and maximum rated charge current of capacitive energy storage device 5, the result of the comparison set the setpoint voltage capacitive energy storage 5, the setpoint voltage of the charge container of the local energy accumulator 5 limit predetermined maximum setpoint voltage capacitive energy storage 5, compare the setpoint voltage capacitive energy storage 5 with a signal proportional to the voltage of the capacitive energy accumulator 5, the sensor output voltage 13 signal proportional to the result of comparison is fed to the input unit 16 pulse-phase control, amplify and output unit 16 pulse-phase control serves to control inputs of the rectifier 11, carry out photoimpulse management of this controlled rectifier, by adjusting the current and the charging voltage of the capacitive energy store 5.

At lower output current sensor 10 signal proportional to the charging current of the capacitive energy store 5 below a pre-selected minimum setpoint current charge capacitive energy storage 5, block 14 set the charge voltage of the capacitive energy store 5 stops to submit the reference signals to the input unit 16 pulse-phase control, thereby stopping the charge of the capacitive energy storage 5.

The output signal of the voltage detector 13 and the current sensor 10 is fed to the input unit 15 indicating charge capacitive energy storage 5.

Features of the invention provide a charge capacitive energy storage in automatic mode (without the intervention of locomotive crews) after starting the diesel locomotive, create the most comfortable conditions charge the capacitive energy storage and provide reliability, protection capacitive energy storage from exposure to high voltage charging generator that allows you to increase the period of operation of capacitive energy storage. The display unit charge capacitive energy storage allows you to visually monitor the current and the charging voltage of the capacitive energy store.

Proposed starting system diesel locomotive was tested on full-scale stand and experienced locomotive TEM 18 locomotive and has shown positive results.

Proposed starting system diesel locomotive can be used for the modernization of the main and shunting locomotives of all series.

Starting system diesel locomotive contains a rechargeable battery the battery is disconnected from the electrical system of the locomotive, electric starter, which is used as a traction alternator, the contacts of the starting contactor through which the voltage when start goes to the starter, the capacitive energy storage device made in the form of parallel or parallel-series connected capacitors, the charge circuit that includes a current-limiting resistor, and diode, shunt current-limiting resistor when current flows discharge capacitive energy storage, additional contactor from closing the contacts that connect battery is ing the battery to a capacitive energy storage before starting the diesel locomotive, characterized in that the system is equipped with a contactor contact closure, current sensors and voltage capacitive energy storage, controlled rectifier charge capacitive energy storage unit set the voltage and indication of charging of capacitive energy storage unit pulse-phase control, with capacitive energy storage using contactor contact closure connected through the current sensor to the output of the rectifier, the power input of which is connected to the output of the charging generator, in parallel to a capacitive energy store connected to the sensor voltage, the output of the current sensor and the sensor output voltage is connected to the input of block set voltage and to the input of the display unit, the output block jobs voltage is connected to the unit pulse-phase control, the output of which is connected with the control input of the controlled rectifier.



 

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