CN107537830B - Hydraulic pipeline oil flushing system and use method thereof - Google Patents

Abstract

The invention relates to the field of pipeline cleaning of hydraulic systems, in particular to a hydraulic pipeline oil flushing system; it includes washing unit, characterized by: the system also comprises a control chip, a main oil inlet pipeline, a main oil return pipeline, a main oil inlet valve, a main oil return valve, a main flow meter, an oil product on-line detector, a main automatic control valve, a branch flow meter and a branch automatic control valve; the hydraulic system pipeline is connected into a main oil return pipeline and a main oil inlet pipeline through a valve table collecting pipe, the other ends of the main oil inlet pipeline and the main oil return pipeline are respectively connected with a flushing device, a branch flowmeter and a branch automatic control valve are connected in series on the valve table collecting pipe of the hydraulic system pipeline, and an oil online detector is connected in series on the main oil return valve; the flushing device, the oil product on-line detector, the main automatic control valve, the branch automatic control valve and the branch flowmeter are connected with a control chip of the central control module through data lines. The system can accurately and efficiently flush all pipelines of the hydraulic system.

Description

Hydraulic pipeline oil flushing system and use method thereof

Technical Field

The invention relates to the field of pipeline cleaning of hydraulic systems, in particular to a hydraulic pipeline oil flushing system and a using method thereof.

Background

The hydraulic system is an important device of large-scale equipment and production lines, and particularly the hydraulic system in the metallurgical industry has the characteristics of more hydraulic stations, more systems and large scale of a single system. Therefore, the requirements on the flushing precision and the flushing efficiency of each pipeline of the hydraulic system are high.

The existing hydraulic pipeline oil flushing technology is mainly carried out by depending on the experience of operators, and has the following defects: 1) the number of flushing valve table headers contained in a single flushing loop is estimated by experience, and the estimation is too conservative, so that the capacity of a flushing pump cannot be fully exerted, electric energy is wasted, and the flushing time is prolonged; excessive estimation is carried out, the pipelines of the manifold of part of the valve table cannot reach the turbulent flow state required by flushing, the flushing quality is poor, and the flushing time is prolonged; 2) the washing oil detection interval is large, and the detection time and the switching time are carried out by experience, so that the washing time is too long, and the washing efficiency is low.

Disclosure of Invention

The invention aims to provide a method for accurately and efficiently flushing each pipeline of a hydraulic system.

In order to achieve the above object, the present invention is realized by:

a hydraulic pipeline oil flushing system; the device comprises a flushing device for flushing a pipeline of a hydraulic system, and further comprises a central control module with a control chip, a main oil inlet pipeline, a main oil return pipeline, a main oil inlet valve, a main oil return valve, a main flow meter, an oil product on-line detector, a main automatic control valve, a branch flow meter and a branch automatic control valve; the hydraulic system pipeline is connected into a main oil return pipeline and a main oil inlet pipeline through a valve table header, the other ends of the main oil inlet pipeline and the main oil return pipeline are respectively connected with a flushing device, a branch flowmeter and a branch automatic control valve are connected in series on the valve table header of the hydraulic system pipeline, the main oil inlet valve and the main oil return valve are respectively connected in series on the main oil inlet pipeline and the main oil return pipeline, a main flowmeter is connected in series on the main oil inlet pipeline, and the main automatic control valve is arranged at the tail ends of the main oil inlet pipeline and the main oil return pipeline and is communicated with two ports; the oil product on-line detector is connected in series with the main oil return valve; the flushing device, the oil product on-line detector, the main automatic control valve, the branch automatic control valve and the branch flowmeter are connected with a control chip of the central control module through data lines.

The hydraulic pipeline oil flushing system is characterized in that a main oil inlet pipeline and a main oil return pipeline are connected with a plurality of hydraulic system pipelines, a branch flowmeter and a branch automatic control valve are connected in series at the joint ends of a valve table header of each hydraulic system pipeline, the main oil inlet pipeline and the main oil return pipeline, and the branch flowmeter and the branch automatic control valve are connected with a control chip of a central control module through data lines.

The use method of the hydraulic pipeline oil flushing system,

step 1, when starting to flush, closing a branch automatic control valve, and opening a main oil inlet valve, a main oil return valve and a main automatic control valve;

step 2, starting a flushing device, performing oil flushing on a main oil inlet pipeline and a main oil return pipeline, feeding measured flow information back to a control chip of a central control module by a main flowmeter, and judging whether the flushing of the main oil inlet pipeline and the main oil return pipeline is in a turbulent flow state or not by the central control module according to preset pipe diameter information; the central control module controls the output flow of the oil flushing device, and ensures that the flow during flushing enables the oil in the main oil inlet pipeline and the main oil return pipeline to be in a turbulent state, namely the flushing requirement is met;

step 3, the oil online detector detects oil in the main oil return pipeline in real time and feeds back a detection result to the central control module, when the cleanliness of the oil in the main oil return pipeline reaches a preset first-stage flushing requirement, the central control module closes the main automatic control valve, adjusts the output flow of the flushing device to the maximum, and opens valve table headers and corresponding branch automatic control valves of the hydraulic systems connected in parallel on the main oil inlet pipeline and the main oil return pipeline one by one from near to far;

step 4, when the flow signals fed back by the corresponding branch flow meters in front of the valve station headers of the hydraulic system are judged by the control chip of the central control module and then can meet the turbulence requirement, continuously opening the new valve station headers of the hydraulic system until the last opened valve station header can not meet the turbulence requirement, closing the automatic control valves of the valve station headers which can not meet the turbulence requirement by the central control module, and forming a first flushing loop by all the valve station headers which can meet the turbulence requirement for flushing by turbulent oil;

step 5, when the signal fed back by the oil product on-line detector indicates that the oil product in the first flushing loop meets the first-stage flushing requirement, the central control module closes a branch automatic control valve of a valve table header contained in the first flushing loop,

step 6, reselecting a second flushing loop and flushing until the flushing of the pipelines behind all valve station headers reaches the flushing target of the first stage;

step 7, repeating the above processes to enable the whole pipeline system to reach the second stage flushing target;

and 8, repeating the processes until the requirement of final washing cleanliness is met, and finishing washing.

According to the hydraulic pipeline flushing device and the use method thereof, the automatic division of the flushing loop can be realized by introducing the flowmeter, the online detector, the automatic control valve and the control console, so that the turbulent flushing of pipelines behind all valve station headers in a single loop is ensured, and the flushing effect is ensured; the automatic monitoring is realized to the process of washing, detects and the return circuit switches automatically, shortens the flushing time, improves and washes efficiency.

Drawings

Fig. 1 is a schematic connection diagram of the hydraulic pipeline oil flushing system.

Detailed Description

The invention is further illustrated by the following specific examples.

As shown in fig. 1, a hydraulic pipeline oil flushing system; the device comprises a flushing device 1 for flushing a hydraulic system pipeline, and further comprises a central control module 2 with a control chip, a main oil inlet pipeline 3, a main oil return pipeline 4, a main oil inlet valve 5, a main oil return valve 6, a main flowmeter 7, an oil online detector 8, a main automatic control valve 9, a branch flowmeter 10 and a branch automatic control valve 11; a hydraulic system pipeline is connected into a main oil return pipeline 4 and a main oil inlet pipeline 3 through a valve table header 12, the other ends of the main oil inlet pipeline 3 and the main oil return pipeline 4 are respectively connected with a flushing device 1, a branch flowmeter 10 and a branch automatic control valve 9 are connected in series on the valve table header 12 of the hydraulic system pipeline, a main oil inlet valve 5 and a main oil return valve 6 are respectively connected in series on the main oil inlet pipeline 3 and the main oil return pipeline 4, a main flowmeter 7 is connected in series on the main oil inlet pipeline 3, and the main automatic control valve 9 is arranged at the tail ends of the main oil inlet pipeline 3 and the main oil return pipeline 4 and is communicated with two ports; the oil product on-line detector 8 is connected in series with the main oil return valve 6; the flushing device 1, the oil product on-line detector 8, the main automatic control valve 9, the branch automatic control valve 11 and the branch flowmeter 10 are connected with a control chip of the central control module 2 through data lines.

In the hydraulic pipeline oil flushing system, a main oil inlet pipeline 3 and a main oil return pipeline 4 are connected with a plurality of hydraulic system pipelines, a branch flowmeter 10 and a branch automatic control valve 11 are connected in series at the inlet ends of a valve table header 12, a main oil inlet pipeline 5 and a main oil return pipeline 6 of each hydraulic system pipeline, and the branch flowmeter 10 and the branch automatic control valve 11 are connected with a control chip of a central control module 2 through data lines.

The use method of the hydraulic pipeline oil flushing system,

step 1, when starting to flush, closing a branch automatic control valve, and opening a main oil inlet valve, a main oil return valve and a main automatic control valve;

step 2, starting a flushing device, performing oil flushing on a main oil inlet pipeline and a main oil return pipeline, feeding measured flow information back to a control chip of a central control module by a main flowmeter, and judging whether the flushing of the main oil inlet pipeline and the main oil return pipeline is in a turbulent flow state or not by the central control module according to preset pipe diameter information; the central control module controls the output flow of the oil flushing device, and ensures that the flow during flushing enables the oil in the main oil inlet pipeline and the main oil return pipeline to be in a turbulent state, namely the flushing requirement is met;

step 3, the oil online detector detects oil in the main oil return pipeline in real time and feeds back a detection result to the central control module, when the cleanliness of the oil in the main oil return pipeline reaches a preset first-stage flushing requirement, the central control module closes the main automatic control valve, adjusts the output flow of the flushing device to the maximum, and opens valve table headers and corresponding branch automatic control valves of the hydraulic systems connected in parallel on the main oil inlet pipeline and the main oil return pipeline one by one from near to far;

step 4, when the flow signals fed back by the corresponding branch flow meters in front of the valve station headers of the hydraulic system are judged by the control chip of the central control module and then can meet the turbulence requirement, continuously opening the new valve station headers of the hydraulic system until the last opened valve station header can not meet the turbulence requirement, closing the automatic control valves of the valve station headers which can not meet the turbulence requirement by the central control module, and forming a first flushing loop by all the valve station headers which can meet the turbulence requirement for flushing by turbulent oil;

step 5, when the signal fed back by the oil product on-line detector indicates that the oil product in the first flushing loop meets the first-stage flushing requirement, the central control module closes a branch automatic control valve of a valve table header contained in the first flushing loop,

step 6, reselecting a second flushing loop and flushing until the flushing of the pipelines behind all valve station headers reaches the flushing target of the first stage;

step 7, repeating the above processes to enable the whole pipeline system to reach the second stage flushing target;

and 8, repeating the processes until the requirement of final washing cleanliness is met, and finishing washing.

According to the hydraulic pipeline flushing device and the use method thereof, the automatic division of the flushing loop can be realized by introducing the flowmeter, the online detector, the automatic control valve and the control console, so that the turbulent flushing of pipelines behind all valve station headers in a single loop is ensured, and the flushing effect is ensured; the automatic monitoring is realized to the process of washing, detects and the return circuit switches automatically, shortens the flushing time, improves and washes efficiency.

Claims (1)

1. The use method of the hydraulic pipeline oil flushing system comprises a flushing device for flushing a pipeline of a hydraulic system, and further comprises a central control module with a control chip, a main oil inlet pipeline, a main oil return pipeline, a main oil inlet valve, a main oil return valve, a main flow meter, an oil product online detector, a main automatic control valve, a branch flow meter and a branch automatic control valve; the hydraulic system pipeline is connected into a main oil return pipeline and a main oil inlet pipeline through a valve table header, the other ends of the main oil inlet pipeline and the main oil return pipeline are respectively connected with a flushing device, a branch flowmeter and a branch automatic control valve are connected on the valve table header of the hydraulic system pipeline in series, the main oil inlet valve and the main oil return valve are respectively connected on the main oil inlet pipeline and the main oil return pipeline in series, a main flowmeter is connected on the main oil inlet pipeline in series, and the main automatic control valve is arranged at the tail ends of the main oil inlet pipeline and the main oil return pipeline and communicates two ports; the oil product on-line detector is connected in series with the main oil return valve; the flushing device, the oil product on-line detector, the main automatic control valve, the branch automatic control valve and the branch flowmeter are connected with a control chip of the central control module through data lines; wherein, total oil inlet pipeline, total oil return pipeline and a plurality of hydraulic system tube coupling, the incoming end at the valve platform collector of each hydraulic system pipeline and total oil inlet pipeline, total oil return pipeline establishes ties branch road flowmeter and branch road automatic control valve, branch road flowmeter and branch road automatic control valve pass through the data line with central control module's control chip and are connected characterized by: the using method comprises

Step 1, when starting to flush, closing a branch automatic control valve, and opening a main oil inlet valve, a main oil return valve and a main automatic control valve;

step 2, starting a flushing device, performing oil flushing on a main oil inlet pipeline and a main oil return pipeline, feeding measured flow information back to a control chip of a central control module by a main flowmeter, and judging whether the flushing of the main oil inlet pipeline and the main oil return pipeline is in a turbulent flow state or not by the central control module according to preset pipe diameter information; the central control module controls the output flow of the flushing device, and ensures that the flow during flushing enables the oil in the main oil inlet pipeline and the main oil return pipeline to be in a turbulent state, namely the flushing requirement is met;

step 3, the oil online detector detects oil in the main oil return pipeline in real time and feeds back a detection result to the central control module, when the cleanliness of the oil in the main oil return pipeline meets a preset first-stage flushing requirement, the central control module closes the main automatic control valve, adjusts the output flow of the flushing device to the maximum, and opens valve table headers and corresponding branch automatic control valves of hydraulic system pipelines connected in parallel to the main oil inlet pipeline and the main oil return pipeline one by one from near to far;

step 4, when the flow signals fed back by corresponding branch flow meters in front of the valve station headers of the hydraulic system pipelines are judged by the control chip of the central control module and then can meet the turbulence requirement, continuously opening new valve station headers of the hydraulic system pipelines until the last opened valve station header can not meet the turbulence requirement, automatically closing the control valves of the branches of the valve station headers which can not meet the turbulence requirement by the central control module, and forming a first flushing loop by all the valve station headers which can meet the turbulence requirement to perform turbulence oil flushing;

step 5, when the signal fed back by the oil product on-line detector indicates that the oil product in the first flushing loop meets the first-stage flushing requirement, the central control module closes a branch automatic control valve of a valve table header contained in the first flushing loop,

step 6, reselecting a second flushing loop and flushing until the flushing of the hydraulic system pipelines behind all valve station headers reaches the first-stage flushing target;

step 7, repeating the above processes, and enabling the whole hydraulic system pipeline to reach the second stage flushing target;

and 8, repeating the processes until the requirement of final washing cleanliness is met, and finishing washing.

Images