Device for measuring stirring loss caused by high-speed rotating element of axial plunger pump/motor

An axial piston pump and high-speed rotation technology, which is applied in the field of hydraulic components, can solve the problems of difficult testing and other problems, and achieve the effects of low processing and testing costs, simple and reliable structure, and long life

Active Publication Date: 2015-12-30
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of difficulty in testing the agitation loss of the high-speed rotating part

Method used

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  • Device for measuring stirring loss caused by high-speed rotating element of axial plunger pump/motor
  • Device for measuring stirring loss caused by high-speed rotating element of axial plunger pump/motor
  • Device for measuring stirring loss caused by high-speed rotating element of axial plunger pump/motor

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Embodiment Construction

[0019] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0020] Such as Figure 1-4 As shown, the present invention includes an analog pump / motor, a first shaft coupling 23, a torque speed sensor 24, a second shaft coupling 27, a variable frequency motor 28, a data acquisition card and an industrial computer; wherein, the analog pump / motor passes through the first The shaft coupling 23 is connected with the torque speed sensor 24; the variable frequency motor 28 is connected with the torque speed sensor 24 through the second shaft coupling 27, and the torque speed sensor 24 is connected with the industrial computer through the data acquisition card; the first shaft coupling 23 is covered with a first Cylindrical support 22, one end of the first cylindrical support 22 is fixedly connected with the front end cover 8, and the other end is fixedly connected with the shell of one e...

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Abstract

The invention discloses a device for measuring stirring loss caused by a high-speed rotating element of an axial plunger pump/motor. The device mainly comprises a main shaft, a cylinder, a torque rotation speed sensor, screws, plungers, a swash plate, a variable rod, a variable piston, a compression spring, a front end cap, a rear end cap, a casing and the like. According to the device for measuring the stirring loss, almost all factors influencing the stirring loss in the pump/motor are taken into consideration, interference of other power loss sources in the pump/motor to measurement of the stirring loss is eliminated through application of proper enlargement of a fit clearance, fastening of a mounting structure and grease lubrication of a bearing, dynamic balance of the rotating element is realized through the designed screw structure, and the stirring loss is measured according to a torque difference measured when a casing is full of oil or devoid of oil under the same work condition. The device is simple and reliable in overall structure, parts are convenient to replace, and the machining and detection costs are low.

Description

technical field [0001] The invention relates to the technical field of hydraulic components, in particular to a test device for agitation loss of a high-speed rotating part of an axial piston pump / motor. Background technique [0002] Axial piston pump / motor is one of the most important power / executive components in the discipline of fluid transmission and control, and has been widely and deeply used in various industries. Since the inside of the pump / motor casing is filled with hydraulic oil with a certain viscosity, the high-speed oil stirring movement of the rotating parts inside the casing causes power losses such as viscous friction loss and local eddy current loss, collectively referred to as " Stirring loss". Stirring loss has an important influence on the efficiency of the axial piston pump / motor, especially when the pump / motor works at a high speed, such as the aviation pump used in the aerospace field, the speed is basically on the order of tens of thousands of rev...

Claims

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Application Information

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IPC IPC(8): F04B51/00F15B19/00
Inventor 徐兵胡敏李莹张军辉岳艺明
Owner ZHEJIANG UNIV
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