Dry flow test method and test device

Abstract

The invention discloses a dry flow test method and a test device which includes hydraulic oil test medium and a product master body. The dry flow test method is characterized in that the hydraulic oil test medium does not contact with a test product. The dry flow test method includes the following steps of: 1, inserting the lower end of a transparent tube into the hydraulic oil test medium; 2, sealing and connecting the upper end of the transparent tube with a fluid suction port of the product master body, and calibrating the rising height of the liquid level of the hydraulic oil test medium in the transparent tube when the product master body is under the working conditions of rated rotating speed and rated oil suction time; 3, removing the product master body, and sealing and connecting the upper end of the transparent tube with the fluid suction port the test product, measuring the oil suction time at which the liquid level of the hydraulic oil test medium in the transparent tube rises to the calibrated height when the test product is under the working state of rated rotating speed, and comparing the measured oil suction time with the calibrated oil suction time. If the measured oil suction time is shorter than or equal to the calibrated oil suction time, the test product is qualified. The dry flow test method is simple and accurate, high in repeatability precision, low in cost and short in test period and does not affect the cleanliness of the product.

Description

technical field [0001] The invention belongs to the technical field of mechanical engineering, and relates to a flow dry test method and a test device, which are especially suitable for delivery detection of flow of oil pumps and the like. Background technique [0002] The traditional oil pump flow detection method usually uses special hydraulic oil as the test medium. Under the conditions of calibration test oil temperature, viscosity, speed, and test pressure, the volumetric flow rate of the oil pump is detected through a flow meter. This kind of test method needs to drain the oil after the test. After the test, the product often retains a lot of hydraulic oil test medium, which will pollute the product to a certain extent. It brings inconvenience to storage, transportation, and user assembly and use; this test method has a long test period, slow beat, large medium consumption, and high test cost. Contents of the invention [0003] The invention discloses a flow dry tes...

AI Technical Summary

Problems solved by technology

[0003] The invention discloses a flow dry test method and a test device to solve the problems in the prior art that the product stays in the hydraulic oil test medium after the test, pollutes the station equipment and the production environment, and the product cleanliness index is difficult to reach the standard, which is inconvenient for storage, transportation, and maintenance. And user assembly, long test period, large media consumption, high test cost, etc.

Images