An energy-saving circuit and control method for a hydraulic support column
A support column and circuit technology, which is applied in the directions of support/support, earth-moving drilling, mining equipment, etc., can solve problems such as large energy consumption, and achieve the effects of reducing pressure loss along the way, reducing costs, and simplifying system circuits.
Active Publication Date: 2017-10-20
JINGDE COUNTY HANHAI NEBULA INTELLIGENTIZE TECH RES & DEV CO LTD
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Problems solved by technology
At present, the hydraulic circuit of the hydraulic support used at home and abroad cannot realize the recovery and utilization of this part of energy, resulting in a lot of energy consumption
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[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.
[0018] Assuming that there are 200 double-column hydraulic supports in the fully mechanized mining face, all hydraulic supports are divided into 20 groups, and each group contains 20 hydraulic support columns, such as figure 1 As shown, it includes 20 column circuit groups, and each column circuit group has the same structure. Now take the first column circuit group as an example, including 20 column circuits with the same structure 6 (1) 、6 (2) ,...,6 (20) Respectively with the low-pressure liquid return circuit 2, the main liquid supply circuit 3, and the energy recovery unit 5 (1) 、5 (2) ,...,5 (20) It communicates with the energy storage liquid path 7, and the energy storage liquid path 7 communicates with the accumulator 8 and the main liquid supply path 3 through the continuous supercharger 4, respectively, and the main liquid supply...
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The invention provides a hydraulic support stand column energy-saving circuit and a control method, and belongs to the technical field of hydraulic supports. The hydraulic support stand column energy-saving circuit is characterized in that the energy-saving circuit is provided with an energy storage fluid circuit; the energy storage fluid circuit is connected with an energy accumulator; pressure energy in a stand column hydraulic cylinder rodless cavity enters the energy accumulator of the energy storage fluid circuit through a second hydraulic control one-way valve and a two-position four-way valve; pressure energy in the storage accumulator enters a main fluid supply circuit through a continuous supercharger. On a fully mechanized mining face, a hydraulic support is at a pole-lowering phase, the pressure energy in the rodless cavity of a stand column hydraulic cylinder is released into the storage accumulator of the energy storage fluid circuit to be stored, enters the main fluid supply circuit through the continuous supercharger and is used for lifting and falling actions of a stand column, and energy recovery is achieved. The hydraulic support stand column energy-saving circuit and the control method have the advantages that recycling and reusing of the pressure energy in the hydraulic support stand column rodless cavity can be achieved, and the energy utilization rate is improved.
Description
technical field [0001] The invention belongs to the technical field of hydraulic supports, and in particular relates to an energy-saving circuit and a control method for hydraulic support columns. Background technique [0002] Energy saving is an important development direction of the fully mechanized mining face support hydraulic system. According to the support requirements of the hydraulic support, the pressure of the rodless chamber in the initial support stage of the column must reach more than 25MPa, and in the bearing stage, the pressure of the rodless chamber will be close to the safe pressure of 40MPa. Therefore, at the initial stage of moving the frame and lowering the column, the pressure energy stored in the rodless chamber of the column cylinder needs to be released in a short time, which will cause hydraulic shock to the circuit; and this part of the energy is not used, which reduces the energy utilization rate. Generally, there are about 100 to 200 hydraulic ...
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IPC IPC(8): E21D15/44
CPCE21D15/44
Inventor 仉志强李永堂刘志奇金坤善
Owner JINGDE COUNTY HANHAI NEBULA INTELLIGENTIZE TECH RES & DEV CO LTD