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System and method for monitoring power of hydraulic system

A technology for hydraulic system and power monitoring, which is used in the testing of fluid pressure actuation systems, fluid pressure actuation devices, and mechanical equipment. wide effect

Active Publication Date: 2012-12-26
SANY HEAVY IND CO LTD (CN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention proposes a power monitoring system and method of a hydraulic system to solve the problems of using temperature difference for measurement in the existing power measurement method, which is difficult to implement and has poor measurement accuracy

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  • System and method for monitoring power of hydraulic system
  • System and method for monitoring power of hydraulic system

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Embodiment Construction

[0041] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0042] On the one hand, the present invention proposes a power monitoring system of a hydraulic system. The monitoring device can perform online measurement of the power of a hydraulic system equipped with a hydraulic control valve. The hydraulic system installed with a pilot valve is taken as an example below to describe the monitoring system The preferred embodiment is described in detail.

[0043] see Figure 1 to Figure 5 , figure 1 It is a schematic diagram of the installation position of the pressure acquisition device in the embodiment of the power monitoring system of the hydraulic system; figure 2 It is a cross-sectional view when the spool of the hydraulic control valve is not movin...

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Abstract

The invention discloses a system and a method for monitoring power of a hydraulic system. The system for monitoring the power of the hydraulic system comprises a first pressure acquisition device, a second pressure acquisition device and a controller, wherein the first pressure acquisition device is used for acquiring a first pressure value at a control oil circuit inlet of a hydraulic control valve in the hydraulic system; the second pressure acquisition device is used for acquiring a second pressure value at an execution oil circuit outlet of the hydraulic control valve in the hydraulic system; and the controller is used for receiving the first pressure value acquired by the first pressure acquisition device and the second pressure value acquired by the second pressure acquisition device, determining the flow rate of an execution oil circuit of the hydraulic control valve according to the first pressure value and determining the power of the hydraulic system according to the flow rate and the second pressure value. According to the system and the method, pressure acquisition units are arranged at the control oil circuit inlet and the execution oil circuit outlet respectively, the power of the hydraulic system is determined according to the pressure values acquired by the pressure acquisition units, the measuring accuracy is higher, and the usage range is wider. In addition, sensors required by the system and the method have a single type and are easy to arrange.

Description

technical field [0001] The invention relates to a power monitoring system, in particular to a power monitoring system and method of a hydraulic system. Background technique [0002] At present, the power measurement of the hydraulic system is generally by arranging temperature sensors and pressure sensors in the hydraulic pipeline to obtain the temperature change value and pressure value in the pipeline, and determine the hydraulic power in the pipeline according to the temperature change value and pressure value . Specifically: several temperature sensors are evenly distributed between the center line of the pipeline and the pipe wall, and the temperature change from the center line of the pipeline to the pipe wall is measured to calculate the change of the velocity field in the pipeline, and according to the change of the velocity field Calculate the flow and flow changes in the pipeline, and then combine the pressure in the pipeline measured by the pressure sensor to cal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B19/00
Inventor 朱湘华李庆李丰
Owner SANY HEAVY IND CO LTD (CN)
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