CN-122006343-A - Intelligent control method for hydraulic support backwashing filter and electronic equipment

CN122006343ACN 122006343 ACN122006343 ACN 122006343ACN-122006343-A

Abstract

The invention relates to the technical field of intelligent control of hydraulic supports of fully-mechanized coal mining working surfaces of coal mines, in particular to an intelligent control method of a backwash filter of a hydraulic support and electronic equipment; the method comprises the steps of receiving a backwash trigger instruction from at least one of a timing mode, a differential pressure mode or a manual mode in a safe operation period, executing safety check on any received backwash trigger instruction, wherein the safety check comprises the steps of detecting whether personnel exist in a target hydraulic support and a preset adjacent area of the target hydraulic support and detecting whether the target hydraulic support is in an active operation state, dynamically determining backwash duration according to the type of the backwash trigger instruction if the safety check is passed, controlling a backwash filter of the target hydraulic support to execute backwash operation, and suspending the backwash trigger instruction and waiting until safety conditions are met if the safety check is not passed.

Inventors

LI XIANGBO
REN WEI
GAO SIWEI
WANG TAO
Geng Yanzhao
KU YONGLIANG
WANG TONGCHENG
LI MINGZHONG
WANG WEI
XUE WENXIN
QIN TAO
CUI YAO
XIA JIE
LI ZAIFENG

Assignees

北京天玛智控科技股份有限公司
北京煤科天玛自动化科技有限公司

Dates

Publication Date: 20260512
Application Date: 20251231

Claims (10)

1. An intelligent control method for a backwash filter of a hydraulic support is characterized by comprising the following steps: acquiring position information of the coal mining machine on a working surface, and judging whether the current safe operation period for allowing back flushing is in a safe operation period or not based on the position information; receiving a backwash trigger instruction from at least one of a timed mode, a differential pressure mode or a manual mode during the safe operation period; Executing safety verification on any received backwash trigger instruction, wherein the safety verification comprises detecting whether personnel exist in a target hydraulic support and a preset adjacent area of the target hydraulic support and detecting whether the target hydraulic support is in an active working state; If the safety verification is passed, dynamically determining the backwashing time length according to the type of the backwashing triggering instruction, and controlling a backwashing filter of the target hydraulic support to execute backwashing operation; and if the safety check is not passed, suspending the back flushing trigger instruction and waiting until the safety condition is met.
2. The intelligent control method of a hydraulic support backwash filter according to claim 1, wherein in the timing mode, the generation of the backwash trigger instruction includes: Monitoring whether a preset reference period is reached or not based on a system clock; when the reference period is reached, detecting the current pressure difference value of a backwashing filter of the target hydraulic support; If the current differential pressure value is smaller than a preset differential pressure threshold value, canceling the timing back flushing and prolonging the next reference period; And if the current pressure difference value is greater than or equal to the pressure difference threshold value, generating the back flushing trigger instruction, and dynamically calculating the back flushing time length according to the difference value between the current pressure difference value and the pressure difference threshold value.
3. The intelligent control method of a hydraulic support backwash filter according to claim 1, wherein in the differential pressure mode, the generation of the backwash trigger instruction includes: monitoring the differential pressure value of a backwashing filter of the target hydraulic support in real time; When the pressure difference value is continuously larger than a preset pressure difference threshold value, generating the back flushing trigger instruction, and dynamically calculating the back flushing time length according to the degree that the pressure difference value exceeds the pressure difference threshold value.
4. The intelligent control method of a hydraulic support backwash filter according to claim 1, wherein in the manual mode, the generation of the backwash trigger instruction includes: Receiving a manual back flushing request sent by an operator aiming at an adjacent frame hydraulic support; And forbidding to receive a manual back flushing request for the hydraulic support of the frame where the operator is.
5. The intelligent control method for the backwashing filter of the hydraulic support according to claim 1, wherein the safe operation period is a period during which the coal cutter is located in a starting triangular coal operation area or an ending triangular coal operation area of a working surface to perform operation.
6. The intelligent control method of the hydraulic support backwash filter according to claim 1, wherein when backwash trigger instructions in a plurality of different modes are received simultaneously, the method further comprises arbitrating the backwash trigger instructions and determining a backwash trigger instruction to be executed according to a preset priority rule.
7. The intelligent control method for the backwashing filter of the hydraulic support according to claim 6, wherein the preset priority rule is that the priority of a differential pressure mode trigger instruction is higher than that of a manual mode trigger instruction, and the priority of the manual mode trigger instruction is higher than that of a timing mode trigger instruction.
8. The intelligent control method for a back flushing filter of a hydraulic support according to any one of claims 1 to 7, further comprising sending back flushing operation prompt information to a monitoring center before controlling the back flushing filter of the target hydraulic support to perform back flushing operation.
9. The intelligent control method of a hydraulic support backwash filter according to any one of claims 1 to 7 wherein the active operating state comprises at least one of lifting columns, lowering columns and moving frames.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and running on the processor, characterized in that the processor implements the intelligent control method of the hydraulic support backwash filter according to any one of claims 1 to 9 when executing the computer program.

Description

Intelligent control method for hydraulic support backwashing filter and electronic equipment Technical Field The invention relates to the technical field of intelligent control of hydraulic supports of fully mechanized coal mining face, in particular to an intelligent control method of a backwash filter of a hydraulic support and electronic equipment. Background In a hydraulic support system of a fully mechanized coal mining face, emulsion is used as a key working medium for transmitting power and lubricating, and the cleanliness of the emulsion directly influences the reliability and the service life of hydraulic elements. In order to ensure the cleanliness of the emulsion, the back flushing filter is widely applied to a liquid supply loop of a hydraulic support. The filter generally comprises a valve body, a filter element assembly, a pilot control valve (such as an electromagnetic pilot valve), a liquid inlet, a liquid outlet, a drain outlet and other flow channel structures, wherein the core function of the filter is to intercept impurities through the filter element, and the impurities are flushed away and discharged by reverse liquid flow after the filter element is blocked, so that the filter element is automatically regenerated. Currently, the control of the activation of the backflushing filter is mostly triggered by a preset rule or a single sensing signal, such as a timing activation based on a fixed time period, an automatic response according to an inlet-outlet pressure difference threshold value, or a command directly initiated by manual operation. However, these control methods generally have the problems of insufficient perception of the actual working conditions of the system, lack of a safety verification mechanism, easy ineffective flushing or response lag and the like. Particularly in complex and changeable underground operation environments, if back flushing operation is performed when equipment is in a key action stage or personnel approaches to an area, instantaneous pressure loss of a hydraulic system can be caused, and potential safety hazards are brought. Therefore, the prior art is difficult to consider the timeliness, effectiveness and operation safety of back flushing. Disclosure of Invention The invention provides an intelligent control method and electronic equipment for a back flushing filter of a hydraulic support, which are used for solving the defects that in the prior art, back flushing operation lacks a working condition sensing and safety checking mechanism, is easy to blindly execute in unsafe time periods or dangerous working conditions, and causes system pressure loss, equipment misoperation or personnel safety risk, and realizing the safety, timeliness and intelligent cooperative control of a back flushing process. The invention provides an intelligent control method of a back flushing filter of a hydraulic support, which comprises the steps of obtaining position information of a coal mining machine on a working surface, judging whether the current back flushing operation period is a safe operation period allowing back flushing or not based on the position information, receiving at least one back flushing trigger instruction from a timing mode, a pressure difference mode or a manual mode in the safe operation period, executing safety check on any received back flushing trigger instruction, wherein the safety check comprises the steps of detecting whether personnel exist in a target hydraulic support and a preset adjacent area thereof and detecting whether the target hydraulic support is in an active operation state, dynamically determining back flushing time according to the type of the back flushing trigger instruction if the safety check is passed, controlling the back flushing filter of the target hydraulic support to execute back flushing operation, and suspending the back flushing trigger instruction and waiting until safety conditions are met if the safety check is not passed. According to one embodiment of the invention, in the timing mode, the generation of the back flush trigger instruction comprises the steps of monitoring whether a preset reference period is reached or not based on a system clock, detecting the current pressure difference value of a back flush filter of the target hydraulic support when the preset reference period is reached, canceling the timing back flush and prolonging the next reference period if the current pressure difference value is smaller than a preset pressure difference threshold value, and generating the back flush trigger instruction if the current pressure difference value is larger than or equal to the pressure difference threshold value, and dynamically calculating the back flush time according to the difference value of the current pressure difference value and the pressure difference threshold value. According to one embodiment of the invention, in the differential pressure mode, the generation of the back flush trigger