DE1985163U - EMERGENCY GENERATOR. - Google Patents

Description

RA. 113 035 * 24.2.

SIEMENS AKTIENGESEILSCHAFT ■ '".' ■ Erlangen, February 23, 1968

_j , Werner-von-Siemens-Str. 50

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- ',. · Act-. Z .: S 49 980 / 46a Gbm ",

• -. '. "'Registration day: 29-8.1964

. "■. ■ -. Emergency generator. ' ■ ■

The innovation concerns an emergency power generator, that of a diesel engine with exhaust-gas driven © © supercharger *, is powered.

In the case of emergency diesel generators for supplying voltage and frequency " The dependent consumers are "as a rule" non-supercharged diesel engines (so-called naturally aspirated motors) are used, so if there is a sudden increase in load .. no noticeable · decrease: the speed and thus ■. also no frequency-and-. Voltage changes can occur that could have unpleasant consequences for the consumer.

With emergency power generators, esp. with mobile emergency power generators, However, the weight and the space requirement of the system play an important role Role, which is determined in particular by the size of the diesel engine, will. Diesel engines without supercharging are, however, not inconsiderably larger and heavier than diesel engines with the same power Exhaust gas superchargers, in which the turbine air driven by the exhaust gas flow pushes into the charge air line and thus an improvement ■

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the cylinder filling results in an increase in performance brings itself. The application of such exhaust-gas supercharged diesel engines for emergency power generators, however, has not yet been able to prevail, Since such emergency power generators are not required for speed and voltage constancy demanding consumers are suitable. This is due to the fact that diesel engines .with exhaust gas turbocharging have a · ' show a significant drop in speed and thus also a reduction in performance. The larger air volume required at the time can be increased by opening loader cannot be promoted "fast" * enough, since the previous one Low load only a low boost pressure was present. The required higher boost pressure is only created with an increase in the Performance - but connected - with a larger time difference Use of flywheels to avoid noticeable speed reductions if the load increased, JedoGh would have the advantage of the smaller and lighter construction of supercharged diesel engines, and with drivable or otherwise spatially and weight-wise Emergency power generators that have to be kept small are not suitable.

These mowers are in the modern emergency power generator avoided that with the. Charging 1-supply a certain air storage Content and printing via at least one normally, blocked ■■ · ' Connecting line is connected, the blocking element of which is and / or speed-dependent controlled actuators in the case of erratic Load increase temporarily - is opened. "With more cylindrical .. Diesel engines can be beneficial when using the air reservoir the charge air line by several, separately releasable connecting lines: connected is that the air intake of each Opposite cylinders. This measure can make a special

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fast and sufficient filling of the individual cylinders can be achieved, whereby to homogenize the filling of all cylinders, the connecting lines with increasing distance from the charger get a larger cross-section .., * '· ·.

The novelty is. .shown in the drawing. -.

The emergency generator consists of a generator 1 and a driving one Diesel engine 2 with exhaust gas-driven supercharger 3, whose Drive turbine 4 on exhaust manifold 5 and exhaust 6 is connected and mechanically drives an air compressor 7, which conveys air from the outside into "the charge air line 8. With the charge air line the air nozzles 9, 10, 11, 12 are connected, which open into the cylinder spaces. In normal operation, the flowing exhaust gas drives the exhaust gas turbine with the diesel engine running Speed indicates that the air compressor 7 is the one required for the Filling the cylinder with diesel fuel-air mixture via the Charge air line feeds the cylinders. The pressure in the charge air line is measured by a pressure gauge 13. -

However, if the load suddenly increases, the filling will not are more in the correct fuel-air ratio, since the air compressor initially remains the same drive speed, only its so far.? Amount of supplies for the required filling but no longer. is sufficient. This is due to the increased load the speed of the diesel drops, which when reducing ...- the Exhaust gas quantity and the exhaust gas pressure also reduce the

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PLA 64/1559

Speed of the supercharger 4 brings with it, so that a further reduction of the die.seldrehzahl is inevitable due to a reduction in the air charge. Only after a time, the gewis'sen ⁱ diesel is gradually import to the new conditions and achieve its normal speed which is .maßgeblich for the frequency and voltage of the generator. 1 However, such inconsistency is not permissible for sensitive consumers.

To avoid the disadvantage, the air chamber 14, which is normally charged with air during operation via a "reducing valve 15 from starting air bottles not shown in detail to ■ a certain pressure, is opened by opening electromagnetically actuated shut-off devices in connecting lines 16 and 17 with the charge air line and thus These connecting lines are opened by electromagnetic means, for example solenoid valves 18 and 19 "which are controlled by a relay 21 *. The relay itself is dependent on both the frequency of the generator 1 and the regulator 22 for the injection pump 23 influenced by end contacts 24, * which are connected to the control rod 25 of the controller 22 ^ As soon as the load on the generator 1 changes the frequency of its voltage and the controller for the injection pump has responded, the relay is 21 affect the solenoid valves 18 and 19 in the opening sense so. that the air in the air chamber can flow into the diesel engine. This ensures that the diesel is filled for a sufficiently long time. '' ^: · .-, "

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Due to the larger ones that occur as a result of the adequate filling Exhaust gas quantities and higher exhaust gas temperatures and pressures will also the supercharger is driven at a higher speed, so that the air. · compressor-in the end after emptying the container 14 alone, d. is able to deliver the necessary amount of charge air. ' Once this occurs and the controller has returned to its drawn position and the frequency has returned to its nominal value has reached, the relay 21 brings the solenoid valves by dropping in the closing position, so that the container 14 via the reducing valve back to a predetermined. Amount of air being charged ', the pressure of which can be read off by a pressure gauge 20. TJ.TJ-. it can also be sufficient if the relay 21 is operated solely by the controller of the injection pump or solely dependent on the frequency of the generator

is controlled. . ■ ■

-No / Rt

Claims (5)

■ '-. · ■ PLA 64/1559 Protection claims. . ■ 1·.; Emergency power generator powered by a diesel engine with exhaust gas transmission. ' benem supercharger in the Lädeluftleitun'g is driven, thereby characterized in that the charge air line (8) is an air reservoir (14) certain content and pressure is connected via at least one "normally, blocked connection line, whose Locking device (16 and / or 17) by frequency and / or speed decrease. ^ dependently controlled actuators (18 or 19) in the case of erratic Load increase is temporarily opened, ■. 2. emergency power unit according to claim 1, characterized in that the air reservoir (H) with the charge air line (8) through several, 'Separately interlockable connecting lines are connected, the face the air inlets of the individual cylinders. 3.. Emergency power generator according to claim 1 or 2, characterized in that that the connection line increases with increasing distance - Received a larger cross-section from the supercharger in the sense of a same filling. '·.' :. "" -. 4. Emergency generator T, 2 or 3, characterized in that as • Blocking device (16 or J7). An electromagnetic valve is provided, • that is influenced by a frequency _{relay (2I 1} ) and / or the position of the controller (22) of the injection pump (2.3). -6-- ..: .Ζ 'No. / Rt PIA 64/1559 5 .. emergency power generator according to the preceding claims with air-tempered " Diesel engine, characterized in that the air accumulator (14) is constantly with the is connected to the air inlet tank or tanks. -7- ■::. ■; ■ Jfr / Rt.