Supercharging device and method suitable for underground coal mine single hydraulic prop
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A single hydraulic prop and pressurization device technology, which is used in props/supports, mining equipment, earth-moving drilling, etc. The effect of working with live equipment and ensuring safe use
Inactive Publication Date: 2019-05-03
胡连太
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[0003] Aiming at the defects in the prior art, the present invention provides a pressurization device and a pressurization method suitable for single hydraulic props in underground coal mines, so as to solve the problem that local sporadic support sites in underground mines are remote and do not have the ability to use emulsion pump stations for powerful The problem of pressurized single hydraulic prop booster
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Embodiment 1
[0047] Such as Figure 1 to Figure 3 As shown, this embodiment provides a booster device suitable for a single hydraulic prop in an underground coal mine, which includes a first oil cylinder 10, a second oil cylinder 20, a first control valve 30, a second control valve 40, and a liquid storage container 50. Water inlet pipe 60, water return pipe 70, high-pressure cut-off valve A81, high-pressure cut-off valve B82, high-pressure cut-off valve C83 and multiple one-way valves.
[0048] Such as figure 2 As shown, the first oil cylinder 10 includes an upper cylinder A11, a lower cylinder A12 and a piston rod A13, the inner diameter of the lower cylinder A12 cavity is smaller than the inner diameter of the upper cylinder A11 cavity, and the inner diameter of the piston rod A13 The two ends are slidably connected to the cavity of the upper cylinder A11 and the cavity of the lower cylinder A12, and the two ends of the piston rod A13 respectively separate the upper cylinder A11 and t...
Embodiment 2
[0067] This embodiment provides a method of using a booster device suitable for single hydraulic props in underground coal mines based on embodiment 1, which specifically includes the following steps:
[0068] S10, install and detect the secondary booster device;
[0069] S11. Connect the water inlet end of the water inlet pipe 60 to the downhole static pressure water pipe, connect the water outlet end of the water inlet pipe 60 to the single hydraulic prop 100, and connect the water outlet end of the return pipe 70 to the downhole drain pipe or drainage ditch;
[0070] S12, open the high-pressure cut-off valve A81, the high-pressure cut-off valve B82 and the high-pressure cut-off valve C83, and confirm that the static pressure water enters the solution cavity of the first control valve 30 and the second control valve 40;
[0071] In step S12, it can be determined whether the water inlet pipe 60 reaches 2.5MPa through the pressure gauge A91;
[0072] S20, injecting the emulsi...
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Abstract
The invention discloses a supercharging device and method suitable for an underground coal mine single hydraulic prop. The supercharging device comprises a first oil cylinder, a second oil cylinder, afirst operation and control valve, a second operation and control valve, a liquid storage container, a water inlet pipe, a water return pipe, a plurality of high-pressure stop valves and a pluralityof non-return valves; and the first operation and control valve controls the first oil cylinder, and the second operation and control valve controls the second oil cylinder. The supercharging device and method suitable for the underground coal mine single hydraulic prop are based on static-pressure water pipes arranged at excavation points of an underground coal mine, the water pressure of 2.5MPain the static water pipes is adopted as initial pressure, a ratio of an inner diameter section of an upper cylinder body B of the second oil cylinder to an inner diameter section of a lower cylinder body B of the second cylinder body is used, when static water of 2.5 MPa pushes the upper end of a piston rod B, force at the upper end of the piston rod B is transmitted to the lower end of the pistonrod B, the lower end of the piston rod B generates pressure of 15MPa towards emulsion-containing static water, the emulsion-containing static water further acts on the single hydraulic prop, the pressure of the single hydraulic prop can achieve 13-15MPa, and the purpose of supercharging molding is achieved.
Description
technical field [0001] The invention belongs to the technical field of pressurization of hydraulic props in underground coal mines, and in particular relates to a booster device and a boosting method suitable for single hydraulic props in underground coal mines. Background technique [0002] In underground coal mine repairing roadway sporadic operation projects or other places where support operations are required underground, single hydraulic props are usually used to support the roof and shed beams. The support of single hydraulic props requires a certain support pressure, and 2.5MPa is generally used underground. The static pressure water is used as the initial stamping of the single hydraulic prop, but the initial support pressure of 2.5MPa often cannot meet the support requirements, and pressure supplementation is required. In the prior art, the emulsion pump station is usually used to provide strong pressure supplement to the single hydraulic prop, but for the sporadic...
Claims
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Application Information
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