CN104495284A - Method for reducing grinding belt fault - Google Patents

Abstract

The invention discloses a method for reducing the grinding belt fault. The method comprises the following steps: a, shaping an iron sheet to be designed on the belt roller site, processing and mounting a new induction iron sheet, and ensuring that the effective induction time is above a standard valve, namely 0.2 second; b, additionally arranging an isolation circuit on a DCS (Distributed Control System) cabinet and protecting an FM136 input module terminal; c, selecting sensors with alarm setup functions in the control cabinet and on the site, changing a signal transmission mode of the sensor, reducing the damage of an FM136 module and the sensors. According to the method for reducing the grinding belt fault, disclosed by the invention, the defects of short effective induction time, low reliability, too high flash frequency and the like in the prior art can be overcome so as to realize the advantages of long effective induction time, high reliability and low flash frequency.

Description

A kind of method reduced into mill belt failure

Technical field

The present invention relates to cement processing technique field, particularly, relate to a kind of method reduced into mill belt failure.

Background technology

Since slag vertical-mill is gone into operation, 1009 to enter to grind the average monthly number of stoppages of belt be 2.7 times.1009 belts are that the dry slag of being led by 1048 electric T-shaped valves is sent into enter to grind belt in slag vertical-mill.Its delivered length is 10.2 meters, above has the fender guards such as tachogenerator, and it is the visual plant of ore deposit grinding system, and its shutdown of breaking down will cause slag vertical-mill stop jumping.

In order to accomodation of activities effectively, determine movable expected value, we enter to grind the survey of belt failure outage record as following table in January, 2012 to June 1009 in 2012:

Note: floor time refers to that entering to grind belt shutdown every month 1009 causes ore deposit to grind stop jumping to the time sum of resuming production; Average each downtime=973/16=60.8 minute, be about 1 hour.

According to electrical service record on duty, we carry out classification analysis in January, 2012-2012 belt failure in year June 1009 and add up as follows:

As follows to upper table Data Summary:

Group has formulated essential factor demonstration plan table and table is verified according to plan:

Belt motor power is less than normal:

Above when belt runs, material is too much, binder:

Induction iron plate actual induction length is too short:

Choice of Sensors is uneven

Sensor flash rate is too fast

Sensor control lines road is without insulation blocking loop

Without monitor operation

Group member, by adopting the method such as field investigation, checking, measurement to the confirmation one by one of above 7 factors, finally determines that to affect 1009 major causes entering to grind belt failure high as follows: the sensor actual induction time is too short; Sensor control lines road is without insulation blocking loop; Sensor flash rate is too fast.

Realizing in process of the present invention, contriver finds at least to exist in prior art the defect such as effective sensitive time is short, reliability is low and flash rate is too fast.

Summary of the invention

The object of the invention is to, for the problems referred to above, propose a kind of method reduced into mill belt failure, to realize the advantage that the actual induction time is long, reliability is high and flash rate is low.

For achieving the above object, the technical solution used in the present invention is: a kind of method reduced into mill belt failure, comprising:

A, on-the-spot at belt roller, to the iron plate sizing that will design, processing new induction iron plate is also installed, and guarantees that the actual induction time is on standard value 0.2s;

B, at DCS cashier's office in a shop, increases isolated loop, protection FM136 load module terminal;

C, at control housing and scene, select the sensor of alarm settings, change the signal load mode of sensor, reduce FM136 module and sensor degradation.

Further, change the operation of the signal load mode of sensor in step c, specifically comprise:

Choosing a model is that 3RG4024-3AG01-PF has the induction sensor of alarm control and control module C12-1-F-4A, and control module is for setting high and low rotating speed value and time delay how many seconds output alarms to control center;

In new sensor loop, there is SDF end just action after reporting to the police, transmit a high level signal to control center;

According to the service condition at scene, control module C12-1-F-4A slow speed of revolution threshold value is set to 200rpm, and high rotation speed threshold values is set to 1400rpm, for lower rotating speed keeps the scene intact the stop jumping that the slipping of the belt occurred, the fault that gets stuck cause.

The minimizing of various embodiments of the present invention enters to grind the method for belt failure, owing to comprising: a, on-the-spot at belt roller, and to the iron plate sizing that will design, processing new induction iron plate is also installed, and guarantees that the actual induction time is on standard value 0.2s; B, at DCS cashier's office in a shop, increases isolated loop, protection FM136 load module terminal; C, at control housing and scene, select the sensor of alarm settings, change the signal load mode of sensor, reduce FM136 module and sensor degradation; Thus the defect that in prior art, the actual induction time is short, reliability is low and flash rate is too fast can be overcome, to realize the advantage that the actual induction time is long, reliability is high and flash rate is low.

Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from specification sheets, or understand by implementing the present invention.

Below by drawings and Examples, technical scheme of the present invention is described in further detail.

Accompanying drawing explanation

Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, together with embodiments of the present invention for explaining the present invention, is not construed as limiting the invention.In the accompanying drawings:

Fig. 1 is technical solution of the present invention Program figure.

Detailed description of the invention

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.

According to the embodiment of the present invention, as shown in Figure 1, provide a kind of method reduced into mill belt failure, comprising:

A, on-the-spot at belt roller, to the iron plate sizing that will design, processing new induction iron plate is also installed, and guarantees that the actual induction time is on standard value 0.2s;

B, at DCS cashier's office in a shop, increases isolated loop, protection FM136 load module terminal;

C, at control housing and scene, select the sensor of alarm settings, change the signal load mode of sensor, reduce FM136 module and sensor degradation; Change the operation of the signal load mode of sensor in step c, specifically comprise:

Choosing a model is that 3RG4024-3AG01-PF has the induction sensor of alarm control and control module C12-1-F-4A, and control module is for setting high and low rotating speed value and time delay how many seconds output alarms to control center;

In new sensor loop, there is SDF end just action after reporting to the police, transmit a high level signal to control center;

According to the service condition at scene, control module C12-1-F-4A slow speed of revolution threshold value is set to 200rpm, and high rotation speed threshold values is set to 1400rpm, for lower rotating speed keeps the scene intact the stop jumping that the slipping of the belt occurred, the fault that gets stuck cause.

In the inventive solutions, need to reduce slag milling 1009 and enter to grind belt failure number, 1009 enter to grind the visual plant of belt as slag vertical-mill, and fault rate is low as far as possible, and monthly the number of stoppages should not more than 1 time.

technical solution of the present invention sets the goal really:

(1) target is determined:

According to the specific environment at scene and the service condition of belt, we enter to grind belt failure calibration by 1009 be original 20%, namely monthly 1009 enters to grind belt failure number of times and be: 16 times/6 months * 0.2=2.7*0.2=0.54 time.

(2) expected value definition base:

Speed sensor fault rate accounting is 81%, and this group has the ability this fault to solve, and just can reach expectation target value after success.Each control path is clear, and Reconstruction in field condition is convenient.Department head pays much attention to, and provides strong technical support and material guarantee.

gameeing of technical solution of the present invention:

For 3 principal elements determined above, group member takes full advantage of collective wisdom, and has formulated corresponding countermeasure and measure:

the concrete performance of technical solution of the present invention:group implements one by one according to strategy table, and particular case is as follows:

Implement one: redesign installation one piece and newly respond to iron plate

On July 4th, 2012, group member actively carried out the inspection of the scene of a crime to July 6, the on-the-spot iron plate sizing to designing, and processed one piece and newly respond to iron plate.

Implement two: design an isolating exterior electric power loop in circuit

This group determines to adopt intermediate relay to carry out isolating exterior power supply, and intermediate relay loop input cost is low, and transformation is convenient.We select a model to be MY2NJ Omron relay, and a special purpose relay base and a long signal wire (SW) of 2 meters can realize.

Implement three: redesign a loop, update routine

This group, by analyzing the loop of substation, thinks that carrying out replacing to DCS template spends cost too high, has change external circuit input mode only and be only an effective method.We choose a model is that 3RG4024-3AG01-PF has the induction sensor of alarm control and control module C12-1-F-4A, and control module can be used to setting high and low rotating speed value and time delay how many seconds output alarms to control center.

Original sensor loop is that the low and high level at scene is fed back to middle control as sampling input, and new sensor loop is then have rear SDF end just action of reporting to the police, and transmits a high level signal to control center.

Change rear program see Fig. 1.It is no longer a tachometer signal that outside line has changed rear M1009_SD signal, but individual alerting signal, because external device has delay function, therefore do not need delay procedure.According to the service condition at scene, control module C12-1-F-4A slow speed of revolution threshold value is set to 200rpm, and high rotation speed threshold values is set to 1400rpm, is mainly lower rotating speed and keeps the scene intact the stop jumping that the slipping of the belt occurred, the fault such as to get stuck cause.

the effect inspection of technical solution of the present invention:

Through the unremitting effort of group member, 1009 belt failure rates significantly reduce, see we to 2012.12 ~ 2013.02 month the number of stoppages statistics.

In technical solution of the present invention, the maintenance intervals of slag mill equipment can be increased after technological transformation, also can reduce FM136 module and sensor degradation, and improve the operation factor of slag mill, lower the input of energy consumption particularly power consumption, this invisible economic benefit is more much higher than the cost of direct surplus.

Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. reduce the method into mill belt failure, it is characterized in that, comprising:

A, on-the-spot at belt roller, to the iron plate sizing that will design, processing new induction iron plate is also installed, and guarantees that the actual induction time is on standard value 0.2s;

B, at DCS cashier's office in a shop, increases isolated loop, protection FM136 load module terminal;

C, at control housing and scene, select the sensor of alarm settings, change the signal load mode of sensor, reduce FM136 module and sensor degradation.

2. the method reduced into mill belt failure according to claim 1, is characterized in that, changes the operation of the signal load mode of sensor, specifically comprise in step c:

Choosing a model is that 3RG4024-3AG01-PF has the induction sensor of alarm control and control module C12-1-F-4A, and control module is for setting high and low rotating speed value and time delay how many seconds output alarms to control center;

In new sensor loop, there is SDF end just action after reporting to the police, transmit a high level signal to control center;

According to the service condition at scene, control module C12-1-F-4A slow speed of revolution threshold value is set to 200rpm, and high rotation speed threshold values is set to 1400rpm, for lower rotating speed keeps the scene intact the stop jumping that the slipping of the belt occurred, the fault that gets stuck cause.