SU657685A1 - Ship diesel-generator cooling system with cooling liquid heat utilization - Google Patents

Description

one

The invention relates to shipbuilding, in particular to the design of cooling systems for a ship diesel generator with heat recovery of a cooling fluid.

A well-known cooling system for a ship diesel generator with heat recovery of the coolant, mainly for a diesel generator of a floating drilling rig, comprising cooling cooler, watermaker, cooler and thermostatic equipment, including a mode controller, a generator load sensor and thermostatic valves 1, included in the system.

The drawbacks of the system are the low efficiency of its operation, the complexity of smoothing out the diesel engine geyrator and the poor performance of the silicon and cyclic load.

The purpose of the invention is to increase the efficiency of the entire system and by smoothing out and operating the dnzel generator, improving the work of the optical system during cyclic loading.

For this, a heater is equipped with electrical and heating elements electrically connected by a power cable through a mode controller with a generator, and the generator load sensor is made with

A control cable connected to the mode control.

FIG. Figure 1 shows schematically the described cooling system; in fig. 2- daily load chart of the diesel generator of the drilling platform.

The cooling system contains a circulator pump 1, which is hydraulically connected by pipeline 2 to the overhead space of the engine 3 of the internal combustion of the diesel generator and preheater 4, which, in turn, is connected by pipeline 5 to the installation unit 6.

The installation of G by pipe 7 with thermoregulation and valve 8 is connected to the refrigerator 9, which, in turn, is connected by pipe 10 to a temperature controlled valve 11 with a foreign engine 3 of the valve.

The pipeline 2 is also connected to bypassing the preheater 4 and the desalination plant 6 by means of a pipe 12, directly through the heater 8 with a refrigerator 9.

The refrigerator 9 is connected in parallel with the pipeline 13.

Claims (1)

The engine of viutrei of its combustion 3 is kinematically connected with the generator 14, on which the load sensor 15 is mounted, connected by a power cable 16 through a distributor shield 17 and a regulator 18 modes with electric heating elements 19 of the heater 4 and a pickling cable 20 - with a regulator 18 modes . FIG. 2 shows the daily schedule of the engine 3 internal combustion with a diesel generator generator 14. Time is plotted along the abscissa, power is plotted along the ordinate. I-I - the maximum engine load; II-II is the load, the level of which is ensured by the operation of the desalination plant 6 without a preheater 4; III-III - the load at which the operation of the desalination unit 6 with the heater is sustained; IV-IV - load, the minimum permissible for the engine; V-V - the actual idle engine load. The system works as follows. When the internal combustion engine and the generator 14 operate at loads exceeding mode II-II, the circulation pump 1 drives the coolant through the inoperative heater 4 to the desalination plant 6 and then, depending on the coolant temperature, either through the internal combustion engine 3 or through refrigerating1 9. This process is regulated by valve P. When operating at partial loads, below mode II-II, the signal from sensor 15 supplied to the regulator 18 modes via cable 16 from generator 14 through switchboard 17 is heated Revolver 4 is energized. The number of heater elements to be switched on 4 depends on the generator load 14. When the water overcooling in the circuit is possible, the valve 8 bypasses the coolant, desalination plant 6, through the pipeline 12. Due to the use of the heater with electrical heating elements when it releases heat to the coolant AQ engine also increases heat generation on AQ due to the additional load on the generator. “At the same time, a constant additional load of the engine to a value higher than regime IV-IV increases the service life of the engine through improvement. combustion of fuel, reduction of engine intake and pipelines connected to it, which are especially dangerous under off-design conditions, i.e., below mode IV-IV. As a result of smoothing the pulsation operation when the preheater is turned on,. following the engine load and maintaining the optimum mode from III-III to I-I, the quality of the distillate is improved, the breakdowns of pump 1 are eliminated and. the deregulation of the automation system of the desalination plant ensures the required amount of desalinated water. In addition, when using the most advanced designs of gas turbine engines with a certain inertia in transient regimes with a small frequency (up to 40 s), the introduction of the proposed invention improves fuel combustion, reduces pollution of the biosphere and reduces sparking, which is especially dangerous for installations conducting reconnaissance oil and gas .. Claims of the invention The cooling system of the ship's dnzel generator with heat recovery cooling fluid, mainly for diesel generator installation, containing in series a heater, heater, cooler and thermostatic equipment in the cooling system, including a mode controller, a generator load sensor and thermostatic valves, which, in order to increase system efficiency by smoothing the pulsation operation of the dzel generator, to improve the operation of the desalination plant under cyclic loading, the heater is equipped with electrical heating elements electrically connected by a power cable through p A modulator of modes with a generator, and a generator loading sensor are made with a control cable connected to a mode controller. Sources of information taken into account during the examination 1. Seliverstov V. M. Utilization of heat in ship diesel installations. L., “Shipbuilding, 1973, p. 140-155, 5 2 ig.1 72 w