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Main oil-passage no-pressure warning device of hydraulic system

A technology of hydraulic system and alarm device, which is applied in the direction of fluid pressure actuation device, fluid pressure actuation system safety, mechanical equipment, etc., and can solve the problem that there is no main oil circuit failure alarm, etc.

Active Publication Date: 2013-01-30
WUXI DONGZHOU MARINE EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Among them, the power failure of the steering gear control system is only provided with an alarm for low control oil pressure in the oil return circuit, but not a pressure loss alarm for the main oil circuit and a pump failure alarm. This is a major defect.

Method used

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  • Main oil-passage no-pressure warning device of hydraulic system

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Embodiment Construction

[0024] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0025] As shown in the figure: the pressure loss alarm device includes fuel tank 1, oil temperature sensor 2, liquid level control relay 3, motor pump unit 4, oil return filter 5, high pressure gauge 6, main oil circuit overflow valve 7, oil return circuit Relief valve 8, oil return circuit pressure relay 9, electro-hydraulic reversing valve 10, low pressure gauge 11, first main oil circuit pressure relay 12, integrated valve block 13, steering gear special valve 14, first hydraulic pump group 15 , steering mechanism 16, reserve oil tank 17, second hydraulic pump group 18, second main oil circuit pressure relay 19, etc.

[0026] The present invention comprises steering mechanism 16 and the hydraulic pump group that is connected with steering mechanism 16 by pipeline, and described hydraulic pump group comprises the first hydraulic pump group 15 and the second h...

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Abstract

The invention relates to a main oil-passage no-pressure warning device of a hydraulic system, comprising a steering mechanism and a hydraulic pump group, wherein the hydraulic pump group comprises a first hydraulic pump group and a second hydraulic pump group. The main oil-passage no-pressure warning device is characterized in that: the first hydraulic pump group comprises an electric pump group,an oil box and an integrated valve block, wherein the integrated valve block is formed by installing a high-pressure manometer, a main oil-passage overflow valve, an oil-return passage overflow valve, an oil-return passage pressure relay, an electro-hydraulic reversing valve, a low-pressure manometer, a main oil-passage pressure relay and a special valve of a steering engine on an iron block, wherein an oil outlet of the oil box is connected with an oil suction hole of the electric pump group, an oil outlet of the electric pump group is connected with the electro-hydraulic reversing valve arranged on the integrated valve block to form a main oil passage, an oil return hole of the oil box is connected with the electro-hydraulic reversing valve to form an oil return loop after being connected with an oil-return filter, and the electro-hydraulic reversing valve is connected with the special valve of the steering engine. The main oil-passage no-pressure warning device of the hydraulic system monitors the pressure of the main oil passage of the hydraulic system and can know the oil-pressure condition of the main oil passage in time.

Description

technical field [0001] The invention relates to a pressure loss alarm device for a main oil circuit of a hydraulic system, in particular to a pressure loss alarm device for a main oil circuit of a hydraulic system used for a hydraulic steering gear. Background technique [0002] The hydraulic steering gear is the main control and executive mechanism in the safe driving of the ship. It is composed of a hydraulic steering mechanism, a hydraulic power unit, and pipeline accessories (including various valves). In the steering control system, the hydraulic steering gear system is controlled according to the captain's instructions to control the ship's heading. Since the hydraulic steering gear system is composed of motors, pumps and various hydraulic components, in the whole system, if any hydraulic component fails, the pipe fittings are broken, the fuel tank is empty, etc., the hydraulic oil cannot run into the cylinder of the actuator. At this time, the steering gear cannot tu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B20/00
Inventor 宋勇荣华建春
Owner WUXI DONGZHOU MARINE EQUIP CO LTD
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