Technological method for circularly flushing hydraulic pipeline

Abstract

The invention discloses a technological method for circularly flushing a hydraulic pipeline, comprising the following steps that a body working pump of a system is removed, and an externally-connected flushing pump is respectively connected with an oil outlet of an oil tank and an oil inlet pipe of a flushing pipeline through temporary pipelines; an oil return pipe of the flushing pipeline and an oil return opening of the oil tank are connected together through temporary pipelines; and a filter is arranged on the temporary pipeline connected with the oil return opening of the oil tank; a bypass valve group comprises a first valve and a second valve, the first valve is arranged at an inlet of the oil inlet pipe, and the second valve is arranged between an outlet of the first valve and an inlet of the filter; an outlet valve of the oil tank, the first valve and the second valve are opened to check connection points of the flushing pipeline and the temporary pipelines; and the second valve is opened, the externally-connected flushing pump is started to enable oil to circularly flow in the flushing pipeline and the oil tank, and the first valve in the bypass valve group is regulated until the flushing pipeline is completely flushed to be qualified. The technological method is low in flushing oil consumption, energy-saving, environment-friendly, convenient to transport, simple in operation and low in cost.

Description

technical field [0001] The invention relates to the technical field of process pipelines, in particular to a process method for circularly flushing hydraulic pipelines. Background technique [0002] Hydraulic systems are widely used in social production. System flushing during installation is a key process for the safe and normal use of hydraulic systems. In order to quickly meet the requirements for flushing cleanliness, the common method is: first clean the oil tank of the pipeline system and the station in the station. Disconnect other system equipment from the pipeline, and then use special flushing pump station system equipment (including pumps, motors, fuel tanks, pipelines in the station, control system, etc.) and temporary pipelines to connect the pipelines that need to be flushed, and then start the flushing station. Start pipe flushing. [0003] Due to the high investment cost, large volume, heavy weight, and fixed volume of the fuel tank, this kind of integral fl...

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Problems solved by technology

[0003] Due to the high investment cost, large volume, heavy weight, and fixed volume of the fuel tank, this kind of overall flushing pump station has some shortcomings that cannot be solved, such as:

[0004] 1. High one-time investment cost and high maintenance cost

[0005] 2. It is inconvenient to transport, hoist and store, and requires the cooperation of large cranes and larger sites

[0006] 3. If the volume of the oil tank is fixed, it will appear that no matter the size of the system, the amount of oil required for the oil tank of the flushing pump station must be added. If the overall flushing pump of the small hydraulic system is too large, the flushing oil will be much more than that required by the main pump station, resulting in flushing oil If it is a large-scale hydraulic or thin oil lubrication system, the oil tank is too small, and you need to pay attention to refueling at all times, which will also cause waste and inconvenience

[0007] 4. Once the overall flushing oil station is finalized, its working capacity range will be determined, and its adaptability to various pipelines is not strong

[0008] 5. The volume of the overall flushing pump station is larger than that of the body hydraulic station. Generally, it cannot be placed in the hydraulic station. It needs to be placed in a separate designated place. The distance from the flushing station to the official pipeline will be longer, the temporary pipeline will be longer, and more materials will be wasted. , is also detrimental to the flushing progress

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