RU2231661C2 - Self-contained electric set - Google Patents

Abstract

FIELD: power engineering.

SUBSTANCE: proposed self-contained electric set has control panel, generator, diesel engine, oil sump connected with diesel engine, fuel feed system, oil tank connected with oil sump as communicating vessels. Oil level in oil tank is limited by its upper wall being at distance L below upper oil level in oil sump where L is distance between upper level of oil, when engine is shut down, and upper level of oil, when engine is operating, and volume V of oil tank required to provided needed time of operation of self-contained electric set without attendance and observation is determined as V=R_blPt-V_os where R_bl is oil burning losses, 1/kW-h; P is power output of self-contained electric set, kW; t is time of operation without attendance and observation, h; V_os is oil volume in oil sump between upper and lower oil levels, l. Upper wall of oil tank is made flat.

EFFECT: increased time of operation without attendance and observation.

2 cl, 1 dwg

Description

The invention relates to electrical engineering, namely to stand-alone power supply systems.

A well-known autonomous power unit containing a control panel, a diesel engine and a generator, as well as a fuel tank, an oil sump connected to a diesel engine, is an analogue (advertising brochure of the Wilson company).

This autonomous power unit has a limited operating time without maintenance and monitoring, which is determined by the capacity of the fuel tank.

A self-contained electric unit containing a control panel, a generator, a diesel engine, an oil sump connected to a diesel engine, a fuel tank, a fuel tank, an electric pump unit, a fuel injection unit (fuel supply system) is known.

This autonomous power unit also has a limited operating time without maintenance and monitoring, which is determined by the time of oil production from the oil sump from the upper oil level in the crankcase to the lower level - the closest analogue [1].

The aim of the invention is to remedy this drawback, i.e. increasing the operating time of the specified autonomous power unit without maintenance and monitoring to the desired value.

This goal is achieved by the fact that in an autonomous power plant containing a control panel, a generator, a diesel engine, an oil sump connected to a diesel engine, a fuel supply system, an oil tank is introduced, connected to the oil sump as communicating vessels, the oil level in the oil tank is limited by its upper wall and is at a distance L below the upper oil level in the oil sump, where L is the distance between the upper oil level with the engine off and the upper oil level with the engine running, and the volume V of the oil tank needed To obtain the required operating time of the autonomous electric plant without maintenance and surveillance, defined as:

V = R _yg · P · tV _km ,

where R _yg - oil consumption for waste, l / kW · h;

P is the power of an autonomous electrical unit, kW;

t is the required time without maintenance and monitoring, h;

V _km is the oil volume in the oil sump between the upper and lower oil levels, l.

In order to reduce the dimensions of the oil tank, the upper wall of the oil tank is made flat.

The drawing shows a structural diagram of an autonomous power unit. Autonomous power unit contains a control panel 1, diesel 2, generator 3, oil sump 4, fuel tank 5, fuel consumable tank 6, electric pump unit 7, fuel injection unit 8, oil tank 9.

Examples of specific performance.

1. Control panel 1. As a control panel, a control panel can be used, as shown, for example, on page 6 [1].

2. Diesel 2. Any engine can be used as a diesel engine, for example, the D65A-P diesel engine, shown on page 6 [1].

3. Generator 3. Any generator can be used as a generator, for example, the generator GS30-50, shown on page 6 [1].

4. Oil sump 4. Oil sump is, as a rule, a structural element of the engine, is a part of the engine lubrication system and can be made, as shown in Fig. 6, p. 16 [2].

5. Fuel tank 5. As a fuel tank, a fuel tank with a capacity of 64 l can be used, see page 6 [1].

6. Consumable fuel tank 6. As a fuel consumable tank, a fuel tank with a capacity of 150 l, shown on pages 6 and 7 [1], can be used.

7. The electric pump unit 7. As the electric pump unit, the electric pump unit shown on page 6 [1] can be used.

8. Fuel injection unit 8. As a fuel injection unit, the fuel injection unit shown on page 6 [1] can be used.

9. The oil tank 9. The oil tank can be made in the form of a welded construction of a rectangular or cylindrical shape with fittings for connecting to the oil casing.

Autonomous power unit operates as follows. At the initial moment of time, the oil level in the oil sump 4 of the diesel engine 2 of the autonomous power unit is at the upper level when the diesel engine 2 of the autonomous power unit is idle or at the upper level when the diesel engine 2 of the autonomous power unit is running. During the operation of diesel 2, the oil level due to its fumes can be reduced to the lower level. A further decrease in the oil level in the oil sump 4 of the diesel engine 2 of the autonomous power unit is unacceptable, since it can lead to failure of the diesel 2 of the autonomous power plant. The operating time without maintenance and monitoring of diesel 2 of an autonomous power unit, and therefore of an autonomous power unit as a whole, will be:

t <V _km / R _yg · P.

In the present invention, when the diesel engine 2 of the autonomous power unit is running, the volume of oil located between the upper and lower oil levels increases due to the introduction of an additional oil tank 9, the oil level in which is limited by its upper wall and is located at a distance L below the upper oil level in the oil sump 4, where L is the distance between the upper oil level when the diesel engine 2 is off and the upper oil level when the diesel engine 2 is running and which is connected to the oil sump 4 of the diesel 2 according to the principle of communicating with ships. In this case, the operating time of an autonomous power unit without supervision and maintenance will be:

t <(V _km + V _dmb ) / R _yg · R,

where V _dmb - the volume of the additional oil tank 9.

Sources of information

1. Electrical units and diesel power plants with a capacity of up to 30 kW. Operation manual ZhShTI.561234.018 RE (prototype).

2. Diesel engines. Operation manual D65-1000001 RE.

Claims (2)

1. An autonomous power unit containing a control panel, a generator, a diesel engine, an oil sump connected to a diesel engine, a fuel supply system, characterized in that an oil tank is introduced into it, connected to the oil sump as communicating vessels, the oil level in the oil tank is limited by its upper wall and is located at a distance L below the upper oil level in the oil sump, where L is the distance between the upper oil level with the engine off and the upper oil level with the engine running, and the volume V of the oil tank needed to receive tions required operating time of the autonomous electric plant without maintenance and surveillance, defined as V = R _yg · P · tV _km , where R _yg - oil consumption for waste, l / kW · h; P is the power of an autonomous electrical unit, kW; t is the required time without maintenance and monitoring, h; V _km is the oil volume in the oil sump between the upper and lower oil levels, l. 2. The stand-alone power plant according to claim 1, characterized in that, in order to reduce the dimensions of the oil tank, the upper wall of the oil tank is made flat.