A water tightness detection device and its hydraulic system
A technology of hydraulic system and detection device, which is applied in the direction of using liquid/vacuum for liquid tightness measurement, fluid pressure actuation device, servo motor, etc. The effect of reliability
Active Publication Date: 2020-01-31
WUHAN MARINE MACHINERY PLANT
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Problems solved by technology
[0004] However, in the water tightness test process of the important parts of the existing controllable pitch propeller, it takes a lot of manpower to time the parts of the controllable pitch propeller and record the pressure value. Low
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0026] figure 1 It is a schematic structural diagram of a water tightness detection device provided by an embodiment of the present invention, figure 2 yes figure 1 rear view of the combined figure 1 and figure 2 , The water tightness detection device includes a frame 1 , a control unit 2 , an output pipeline 3 and a hydraulic system 4 . The control unit 2 , the output pipeline 3 and the hydraulic system 4 are all fixedly arranged on the frame 1 .
[0027] Such as figure 1 As shown, the hydraulic system 4 includes a water tank 41 fixed on the frame 1, a first hydraulic pump 42, a switch module 43 and a first two-position two-way reversing valve 44, and the input end of the first hydraulic pump 42 communicates with the water tank...
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The invention discloses a watertightness detection device and a hydraulic system thereof, and belongs to the field of marine equipment. According to the process, a water path between a first hydraulicpump and a detection part is controlled through a switch module, when the switch module connects the water path between the first hydraulic pump and the detection part, the first hydraulic pump conveys water to the detection part, and after the pressure in the detection part reaches designated pressure, the switch module disconnects the water path between a water tank and the detection part. At the moment, the detection part begins to be subject to timing, and after pressure maintaining of the detection part is carried out for the designated time, a first two-position two-way reversing valveis opened, the detection part is subject to pressure relief, and water in the part partly flows back to the water tank. In the process, the hydraulic system achieves automatic water filling and pressure relief of the detection part, the pressure in the detection part is automatically recorded, the detection process can be completely carried out through a program, manual participation is not needed, and part watertightness detection efficiency and detection result reliability are improved.
Description
technical field [0001] The invention relates to the field of marine equipment, in particular to a water tightness detection device and a hydraulic system thereof. Background technique [0002] The controllable pitch propeller is the part of the ship's propulsion device that provides power to the ship's motion by turning in the water. Since the controllable pitch propeller is used directly in water, before the controllable pitch propeller is actually installed on the ship, it is necessary to conduct a water tightness test on its important parts to ensure that the controllable pitch propeller can operate normally in water. [0003] The important parts of the existing controllable pitch propellers need to carry out the sealing test according to the requirements. In the pipeline interface of water filling and water discharge, the water pipe installed with the pressure gauge is connected with the pipeline interface, and the water pipe is connected with the pump and a shut-off va...
Claims
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IPC IPC(8): F15B11/00G01M3/02
CPCF15B11/00G01M3/02
Inventor 张向文李沨华霖高兵薛小星
Owner WUHAN MARINE MACHINERY PLANT