阅读说明：本技术 基于压力控制的润滑系统清洗方法 (Lubricating system cleaning method based on pressure control ) 是由 由龙 王波 李亚宁 王春莹 郭元慧 于 2021-07-02 设计创作，主要内容包括：本发明涉及润滑系统清洗领域,具体是基于压力控制的润滑系统清洗方法,润滑系统工作时,控制单元根据相邻两次工作时压力传感器输出的压力数值变化量与设定数值进行比对；控制单元判断所述压力变化量数值是否达到设定值,若未达到设定值,则润滑系统继续运行；若达到设定值,则启动清洗操作,控制单元记录润滑系统本次压力最大值与清洗后润滑系统压力值。本发明是根据润滑系统的管路压力变化情况进行清洗设备的启停,从而可以早期预警采取清洗措施,彻底解除堵塞风险,可以有效预防系统堵塞并清除堵塞风险,有利于其稳定运行,更好的为设备提供润滑服务。本发明的方法控制简单,容易实现。(The invention relates to the field of lubricating system cleaning, in particular to a lubricating system cleaning method based on pressure control.A control unit compares the pressure value variable quantity output by a pressure sensor with a set value when a lubricating system works for two adjacent times; the control unit judges whether the pressure change quantity value reaches a set value or not, and if not, the lubricating system continues to operate; if the pressure value reaches the set value, the cleaning operation is started, and the control unit records the maximum pressure value of the lubricating system at the time and the pressure value of the lubricating system after cleaning. The invention starts and stops the cleaning equipment according to the pipeline pressure change condition of the lubricating system, thereby early warning and taking cleaning measures, thoroughly eliminating the blocking risk, effectively preventing the system from blocking and clearing the blocking risk, being beneficial to the stable operation of the system and better providing the lubricating service for the equipment. The method of the invention is simple to control and easy to realize.)

1. A pressure control-based lubricating system cleaning method is characterized in that a cleaning system is used for cleaning a lubricating system, the cleaning system is provided with a cleaning pump, a plurality of pressure sensors, a control unit and a connecting pipeline, the cleaning pump pumps cleaning liquid into the lubricating system through the connecting pipeline, the pressure sensors measure the pressure of pipelines at a lubricating grease pumping outlet of the lubricating pump of the lubricating system and at each lubricating grease outlet of a distributor, and the lubricating system cleaning method is characterized in that:

when the lubricating system works, the control unit compares the pressure value variable quantity output by the pressure sensor during two adjacent working with a set value;

the control unit judges whether the pressure change quantity value reaches a set value or not, and if not, the lubricating system continues to operate;

if the pressure value reaches the set value, the cleaning operation is started, and the control unit records the maximum pressure value of the lubricating system at the time and the pressure value of the lubricating system after cleaning.

2. The pressure control based lubrication system cleaning method of claim 1, wherein: the cleaning starting operation comprises the steps that the control unit calculates the pressure value change measured by the pressure sensor, the cleaning system is started, and the cleaning system is stopped after the pipeline pressure of the lubricating system is reduced to a set value.

3. The pressure control based lubrication system cleaning method of claim 1, wherein: the starting cleaning operation comprises the steps that the control unit monitors the pressure value measured by the pressure sensor, and the control unit calculates the pressure difference value when the lubricating system runs twice adjacent to each other, the running time of the cleaning system and the running time difference value of the cleaning equipment of the two adjacent times.

4. The pressure control based lubrication system cleaning method of claim 1, wherein: the control unit calculates according to the difference of the running time of the two adjacent cleaning systems and the pressure difference of the lubricating system and the correlation function of the grease denaturation performance curve and provides pressure change data of the lubricating system;

the control unit judges whether the pressure change value of the lubricating system reaches an early warning set value of grease denaturation of the lubricating system, and if the pressure change value does not reach the set value, the lubricating system continues to operate; if the preset value is reached, an early warning operation is sent out.

Technical Field

The invention relates to the field of lubricating system cleaning, in particular to a lubricating system cleaning method based on pressure control.

Background

In the prior art, the cleaning of the lubricating system is performed after the system is exploded or blocked, so that the lubricating system cannot work, even the whole system is replaced, and the loss is large.

For example, in the lubrication system of a wind turbine, the grease lubrication device is automatically switched on to inject a lubricant supplement when a fixed time interval is reached. When a fault alarm of the lubricating system occurs, the lubricating system stops working, and the lubrication of the fan bearing is directly influenced. Because of the operation mode and maintenance requirements of the fan, maintenance personnel cannot immediately perform system maintenance, and a fan bearing has to operate at the risk of insufficient lubrication, so that potential risks and faults are caused, and the stable operation of the fan is influenced.

The lubricating system of the fan is a mechanism which can give transient alarm, has no process detection, cannot give early warning, quickly relieves and even clears faults on the basis of the running condition of the distributor indicating rod.

At present, the maintenance of the lubricating system usually adopts a direct replacement method, which has high cost, takes long time and has great influence on the operation of equipment.

In summary, there is a gap in the prior art lubrication system cleaning scheme, and a solution is urgently needed.

Disclosure of Invention

The invention aims to solve the technical problem that no lubricating system cleaning method exists at present, and provides a lubricating system cleaning method based on pressure control to solve the problem that the lubricating system cannot be cleaned in the prior art.

The invention relates to a pressure control-based lubricating system cleaning method, which uses a cleaning system to clean a lubricating system, wherein the cleaning system is provided with a cleaning pump, a plurality of pressure sensors, a control unit and a connecting pipeline, the cleaning pump pumps cleaning liquid into the lubricating system through the connecting pipeline, the pressure sensors measure the pressure of pipelines at a lubricating grease pumping outlet of the lubricating pump of the lubricating system and each lubricating grease outlet of a distributor, and the cleaning method of the lubricating system comprises the following steps:

when the lubricating system works, the control unit compares the pressure value variable quantity output by the pressure sensor during two adjacent working with a set value;

the control unit judges whether the pressure change quantity value reaches a set value or not, and if not, the lubricating system continues to operate;

if the pressure value reaches the set value, the cleaning operation is started, and the control unit records the maximum pressure value of the lubricating system at the time and the pressure value of the lubricating system after cleaning.

Further, the operation of starting the cleaning includes that the control unit calculates the change of the pressure value measured by the pressure sensor, the cleaning system is started, and the cleaning system is stopped after the pipeline pressure of the lubrication system is reduced to a set value.

Further, the starting of the cleaning operation includes that the control unit monitors a pressure value measured by the pressure sensor, and calculates a pressure difference value when the lubricating system runs twice adjacent to each other, a running time of the cleaning system and a running time difference value between the two adjacent cleaning devices.

Further, the control unit calculates according to the difference between the running time of the two adjacent cleaning systems and the pressure difference of the lubricating system and the correlation function of the grease denaturation performance curve, and provides pressure change data of the lubricating system;

the control unit judges whether the pressure change value of the lubricating system reaches an early warning set value of grease denaturation of the lubricating system, and if the pressure change value does not reach the set value, the lubricating system continues to operate; if the preset value is reached, an early warning operation is sent out.

The invention has the advantages that the cleaning device is controlled according to the pipeline pressure of the lubricating system, namely the cleaning device is started and stopped according to the pipeline pressure change condition of the lubricating system, the faster the pressure change value of the lubricating system is, the larger the blockage risk of the lubricating system is, and the cleaning device needs to operate and clean the pipeline of the lubricating system and the lubricating grease distribution device, and vice versa. The invention judges according to the pressure change value of the pipeline, thereby early warning and taking cleaning measures, thoroughly eliminating the blocking risk, effectively preventing the system from blocking and eliminating the blocking risk, being beneficial to the stable operation of the system and better providing lubrication service for equipment. The method of the invention is simple to control and easy to realize.

Drawings

FIG. 1 is a schematic flow chart of the present invention.

Detailed Description

As shown in fig. 1, a method for cleaning a lubrication system based on pressure control uses a cleaning system to clean the lubrication system, the cleaning system is provided with a cleaning pump, a plurality of pressure sensors, a control unit and a connecting pipeline, the cleaning pump pumps cleaning liquid into the lubrication system through the connecting pipeline, the pressure sensors measure the pressure of a lubricating grease pumping outlet of the lubrication pump of the lubrication system and the pressure of each lubricating grease outlet pipeline of a distributor, and a one-way valve is arranged between the lubrication system and the cleaning system to ensure that the cleaning liquid can only flow in the distributor of the lubrication system and can not enter the lubrication system pipelines. The cleaning method of the lubricating system comprises the following steps:

when the lubricating system works, the control unit compares the pressure value variable quantity output by the pressure sensor during two adjacent working with a set value;

the control unit judges whether the pressure change quantity value reaches a set value or not, and if not, the lubricating system continues to operate;

if the pressure value reaches the set value, the cleaning operation is started, and the control unit records the maximum pressure value of the lubricating system at the time and the pressure value of the lubricating system after cleaning.

The cleaning starting operation comprises the steps that the control unit calculates the pressure value change measured by the pressure sensor, the cleaning system is started, and the cleaning system is stopped after the pipeline pressure of the lubricating system is reduced to a set value.

The starting cleaning operation comprises the steps that the control unit monitors the pressure value measured by the pressure sensor, and the control unit calculates the pressure difference value when the lubricating system runs twice adjacent to each other, the running time of the cleaning system and the running time difference value of the cleaning equipment of the two adjacent times.

The control unit calculates according to the difference of the running time of the two adjacent cleaning systems and the pressure difference of the lubricating system and the correlation function of the grease denaturation performance curve and provides pressure change data of the lubricating system;

the control unit judges whether the pressure change value of the lubricating system reaches an early warning set value of grease denaturation of the lubricating system, and if the pressure change value does not reach the set value, the lubricating system continues to operate; if the preset value is reached, an early warning operation is sent out.

The method comprises the following steps:

the lubricating system runs, the control unit reads the numerical value of the pressure sensor and calculates the pressure difference value obtained by two adjacent measurements;

the control unit judges whether the pressure difference value reaches a set value or not;

if the pressure difference value does not reach the set value, the cleaning system enters a standby state, and the lubricating system normally operates;

if the pressure difference value exceeds a set value, the cleaning system enters an operating state, a cleaning pump is started, cleaning liquid is pumped into the connecting pipeline, and the lubricating system starts to clean;

stopping the cleaning pump after the operation time of the cleaning system reaches the set time;

the lubricating system operates, the lubricating grease is replenished for two times, and the pressure difference value in the grease replenishing process for two times is calculated;

and if the set value is reached, the lubricating system normally runs after the cleaning is finished.

The blockage of the lubricating system cannot be early-warned and timely treated in advance, but the blockage of the lubricating system happens occasionally, so that adverse effects are caused to the operation of the bearing, the stable operation of equipment is directly influenced, and the response cannot be carried out according to the difference of the operation state of the lubricating system. The cleaning equipment is controlled according to the pipeline pressure of the lubricating system, namely the cleaning equipment is started and stopped according to the pipeline pressure change condition of the lubricating system, the faster the pressure change value of the lubricating system is, the higher the blockage risk of the lubricating system is, and the cleaning equipment needs to operate and clean the pipeline of the lubricating system and the lubricating grease distribution device, and vice versa. The invention judges whether the system needs to be cleaned or not according to the maximum value of the pipeline pressure of the lubricating system, but according to the pressure change value of the pipeline, thereby early warning and taking cleaning measures can be carried out, and the blockage risk can be thoroughly eliminated. The maximum value of the pipeline is adopted as the basis for cleaning, the pipeline is often found to be blocked and burst, and the significance of the blockage alarm of the lubricating system is lost. Therefore, the control method for cleaning the system by adopting the pipeline pressure change value of the lubricating system can effectively prevent the system from being blocked and remove the blocking risk, is beneficial to the stable operation of the system and better provides the lubricating service for the equipment.

The cleaning time of the lubricating system completely depends on the pressure change value of a system pipeline, when the pressure change value is lower than a set value, the cleaning equipment is in a rest state, and the lubricating system continuously works according to the technical requirement; when the pressure change value is higher than the set value, the cleaning equipment calculates the operation time of the cleaning equipment according to the function of the pressure change value and the blockage risk coefficient of the lubricating system, and then cleaning work is carried out in the rest time of the lubricating system. After the cleaning is finished, the lubricating system is started, the pipeline pressure is monitored and compared with the standard pipeline pressure, and the pipeline pressure is confirmed to reach the standard pressure value. If the standard value is not reached, the cleaning equipment is started again. If the standard pressure value is not reached again, an alarm state is entered, and a maintenance program is entered. The method of the invention is simple to control and easy to realize.

The invention is automatically completed by a set program in the control unit, and in the program circulation process, as the cleaning system is started according to the pressure difference value of the pipeline of the lubricating system, the reaction speed is high, and the cleaning system is not related to the running time parameter of the lubricating system, the misoperation and the risk of pipeline explosion caused by the measurement extreme value can be effectively avoided. The cleaning time is determined by establishing a standard functional relationship with the performance parameters of the cleaning solution according to the lubricating grease properties of the bearing lubrication system, working environment parameters, system operation frequency, pipeline length, pipeline diameter and the like. For example, according to the annual lubricating grease consumption of the bearing, the equipment starting and stopping times and the working mode, the annual total cleaning times can be obtained, and then the comparison is carried out according to the annual total cleaning times, so that the working performance of the lubricating system and the viscosity change of the lubricating grease can be reflected from the side face, and the multi-angle monitoring of the working condition and the lubricating effect evaluation of the lubricating system is facilitated.