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Self-controlled pressure-sustaining oil transmission pump set

An automatic control and oil delivery pump technology, which is applied in pump control, machine/engine, mechanical equipment, etc. It can solve the problem that the oil supply cannot be prepared according to the needs, the demand for lubricating oil of diesel engines cannot be met, and the influence of pipelines and power supply networks and other issues, to achieve the effect of saving investment costs, saving maintenance costs, reducing noise and vibration

Active Publication Date: 2007-08-08
HUDONG HEAVY MACHINERY
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

But because the lubricating oil has a certain viscosity, and the viscosity changes with the change of temperature, adjusting the pressure value of the lubricating oil by adjusting the bypass valve at the outlet of the pump is far from meeting the demand of the diesel engine for the lubricating oil
If ordinary pressure pumps are used to transport oil, the amount of oil supplied cannot be adjusted according to the needs, resulting in waste of oil and power, and the service life of the pump is also shortened. Simultaneous start and stop of multiple high-power pump sets will also cause damage to the pipeline. Negative impact on roads and power supply network

Method used

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  • Self-controlled pressure-sustaining oil transmission pump set

Examples

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Embodiment 1

[0028] This embodiment is an automatically controllable constant-pressure oil delivery pump set composed of three screw pumps of the same type. The oil delivery pump set is used for the test run of the high-power marine diesel engine on the test stand to realize the automatic supply of lubricating oil required by the diesel engine.

[0029] The automatically controllable constant-pressure oil delivery pump set is composed of three screw pumps 2 of the same model running in parallel to form a screw pump set, which can realize continuous adjustment of the three screw pumps 2 and save energy. In this embodiment, the motor that drives the screw pump 2 adopts the form of "two fixed and one variable", that is, only one screw pump 2 is equipped with a variable frequency motor 11 and a frequency converter 9 for speed regulation operation, and there are two other screw pumps 2 that are still controlled by Ordinary motor 3 is driven by constant speed operation in order to realize automa...

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Abstract

The invention relates to an automatic-control constant-pressure oil pump, which transmits the lubricant of oil box via the oil pump to the lubricant outlet tube, into the diesel engine. One oil pump is driven by one frequency-variable motor, and other oil pumps are driven by general motors. The frequency-variable motor is connected to one frequency changer. The general motors are connected to the soft starter. The lubricant outlet tube contains a pressure sensor connected with one digit adjuster. The digit adjuster is communicated with the frequency changer. The frequency changer, soft starter and the digit adjuster are connected into one port of programmable controller. The frequency changer, soft starter, digit adjuster and the programmable controller are parallel connected with the power source. The invention can realize automatic controlled constant-pressure oil feeding, with low cost.

Description

technical field [0001] The invention relates to an oil delivery pump, in particular to an automatically controllable constant-pressure oil delivery pump set used on a test bench of a high-power marine diesel engine. Background technique [0002] In shipbuilding or other heavy machinery industries, high-power diesel engines are often involved, and the lubricating oil systems of these high-power diesel engines generally use screw pumps or gear pumps to deliver lubricating oil. Since the capacity of a single pump is small, it is generally a complete set The number of pumps included is generally 2-5. [0003] In the existing technology, in the supply of lubricating oil for high-power diesel engines, the motor is often started directly (or star-delta step-down starting), and the pressure adjustment during lubricating oil delivery is realized by a bypass valve. The bypass valve is opened on the oil delivery pipe. Manually or electrically actuate the bypass valve to adjust the pre...

Claims

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Application Information

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IPC IPC(8): F04C14/00
Inventor 黄丹清陈培贞
Owner HUDONG HEAVY MACHINERY
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