Selection method of high water content hydraulic fluid for hydraulic support based on liquid water
A high-water-containing hydraulic fluid and hydraulic support technology, which is applied in the petroleum industry, lubricating compositions, etc., can solve the problem of not being able to cover the water used for liquid distribution
Active Publication Date: 2017-05-17
ZHENGZHOU COAL MINING MACHINERY GRP +1
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Problems solved by technology
The dosing water used in the two test methods of MT76 and ISO4404-1 cannot cover the dosing water used in the actual application of coal mines
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[0017] Taking Mine A as an example, Mine A intends to filter the underground water of the coal mine and use it as liquid water for high water content hydraulic fluid. The selection method of high water content hydraulic fluid includes the following steps:
[0018] The first step is to test the water hardness of the water used for liquid preparation, and select the type of high-water hydraulic fluid to be used according to the hardness: after testing, the water hardness and main ion content are shown in the table below
[0019] .
[0020] The water hardness is 360 mg / L. According to the MT76 standard, a high-water hydraulic fluid stock solution corresponding to hardness level 10 (that is, 500 mg / L) should be selected. At the same time, the water quality SO 4 2- The content exceeds the standard and does not meet the requirements of MT 76 for the water quality of the dosing solution. According to the water quality of the mine, the concentrated solution with the model number ...
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Abstract
The present invention discloses a selection method of a hydraulic support high-water-content hydraulic liquid based on liquid preparing water. The selection method comprises: testing the water hardness of liquid preparing water to be used, selecting the raw liquid type of high-water-content hydraulic liquid to be used, preparing standard liquid preparing water according to the MT76 standard requirement, preparing a high-water-content hydraulic liquid a with the standard concentration, testing the Zeta potential polarization curve of the cylinder material in the a to obtain a pitting potential Ea, adopting actual coal mine liquid preparing water to preparing a high-water-content hydraulic liquid b according to a concentration to be used, testing the Zeta potential polarization curve of the cylinder material in the b to obtain a pitting potential Eb, comparing Ea and Eb, using the concentration to be used if Eb is more than or equal to Ea, and if Eb is less than Ea, increasing the concentration of the high-water-content hydraulic liquid to be used until Eb is more than or equal to Ea so as to determine the concentration of the high-water-content hydraulic liquid as the minimum use concentration. With the selection method, the concentration of the high-water-content hydraulic liquid can be conveniently and rapidly selected.
Description
technical field [0001] The invention relates to hydraulic fluid for hydraulic supports, in particular to a method for selecting high-water-containing hydraulic fluid for hydraulic supports based on liquid distribution water. Background technique [0002] Hydraulic support is an important component of coal mine fully mechanized mining machinery. Columns and jacks are important parts of hydraulic supports, and the functions of columns and jacks are realized through high-water hydraulic fluid as their transmission medium. "MT76-2011 Hydraulic Support Emulsified Oil, Concentrated Oil and Its High Water-Containing Hydraulic Fluid" (replacing MT 76-2002) regulates various performance requirements of high water-containing hydraulic fluid. Since the water content of the dosing liquid accounts for more than 90% of the high water content hydraulic fluid, the corrosion resistance of the high water content hydraulic fluid depends largely on the concentration used and the water quality ...
Claims
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IPC IPC(8): C10M177/00C10N40/08
Inventor 程相榜孟贺超李福永张自强刘桂花
Owner ZHENGZHOU COAL MINING MACHINERY GRP