CN105149042A - Method for reducing failure frequency of roller press of cement mill - Google Patents
Method for reducing failure frequency of roller press of cement mill Download PDFInfo
- Publication number
- CN105149042A CN105149042A CN201510383830.1A CN201510383830A CN105149042A CN 105149042 A CN105149042 A CN 105149042A CN 201510383830 A CN201510383830 A CN 201510383830A CN 105149042 A CN105149042 A CN 105149042A
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- motor
- roller press
- dust
- contactor
- electric
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- 239000004568 cement Substances 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 239000000428 dust Substances 0.000 claims description 22
- 238000007689 inspection Methods 0.000 claims description 7
- 230000000737 periodic effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 230000009467 reduction Effects 0.000 claims description 3
- 230000032683 aging Effects 0.000 abstract description 10
- 230000008901 benefit Effects 0.000 abstract description 7
- 230000007547 defect Effects 0.000 abstract description 3
- 230000036541 health Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000009191 jumping Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Landscapes
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a method for reducing the failure frequency of a roller press of a cement mill. The method comprises the steps that firstly, an oil station motor contactor and an oil station motor thermal relay are allocated and maintained regularly; and secondly, a wind shield and a radiating device are added to a control cabinet and regularly maintained and dedusted. According to the method for reducing the failure frequency of the roller press of the cement mill, the defects of proneness to ageing, the high failure rate, large cleaning difficulty and the like of elements in the prior art can be overcome, and the advantages that the elements are not prone to ageing, low in failure rate and small in cleaning difficulty are achieved.
Description
Technical field
The present invention relates to cement processing technique field, particularly, relate to a kind of method reducing the cement grinding roller press fault frequency.
Background technology
The fault frequency is higher in recent years for my company 3# production line cement grinding roller press, and investigation finds that the petrol station of mainly roll squeezer breaks down, and causes roll squeezer error protection stop jumping and causes cement grinding mill safety interlocking stop jumping, stops the normal production of cement.In order to accomodation of activities effectively, we have carried out the statistics of the cement grinding roller press fault frequency according in January, 2014 to June electrical service record, see the following form:
Table 1: roll squeezer fault frequency statistics table
。
In order to better analysis of failure, find the main cause causing roll squeezer fault, we add up having caused several reasons of roll squeezer fault to carry out and depict fault arrangement according to statistical form.
Table 2: roll squeezer fault statistics table
。
The petrol station fault frequency 39 times, accounts for institute out of order 76.5%, therefore can determine to cause the high main cause of the cement grinding roller press fault frequency be: roll squeezer petrol station fault; Cause the principal element of controller failure to be: component aging and switch board dust many.
Realizing in process of the present invention, inventor finds at least to exist in prior art components and parts easily aging, the defect such as fault rate is high and clean difficulty is large.
Summary of the invention
The object of the invention is to, for the problems referred to above, propose a kind of method reducing the cement grinding roller press fault frequency, to realize components and parts not easily aging, failure rate is low and the little advantage of clean difficulty.
For achieving the above object, the technical solution used in the present invention is: a kind of method reducing the cement grinding roller press fault frequency, comprising:
(1) allocate petrol station motor contactor and petrol station motor heat relay, and periodic inspection;
(2) increase hurricane globe and heat abstractor to switch board, periodic inspection also clears up dust.
Further, step (1) in, allotment petrol station motor contactor and the operation of petrol station motor heat relay, specifically comprise:
The situation many according to on-the-spot ash, the contactor selected, be the LC1-D09 series of Schneider, the configuration design of this contactor is enclosed, can to a certain degree prevent dust from entering;
And/or,
The effect of motor heat relay is protection motor overload, when motor overload, current of electric can increase above Rated motor electric current, electrothermal relay is serially connected in electric motor loop, when current of electric becomes large, according to formula Q=I*I*R, caloric value Q greatly increases with electric current I, bimetal leaf in electrothermal relay makes contact disconnect because of temperature distortion, according to the break-make of contact, PLC judges whether motor transships; New electrothermal relay has been changed according to the parameter specification of former electrothermal relay.
Further, step (1) in, the operation of described cleaning dust, specifically comprises:
With electronic dust blower, the dust in switch board is cleaned out, ensure the normal work of electric device.
The method of the reduction cement grinding roller press fault frequency of various embodiments of the present invention, owing to comprising: (1) allocate petrol station motor contactor and petrol station motor heat relay, and periodic inspection; (2) increase hurricane globe and heat abstractor to switch board, periodic inspection also clears up dust; Thus easily aging, fault rate is high and clean difficulty the is large defect of components and parts in prior art can be overcome, to realize components and parts not easily aging, failure rate is low and the little advantage of clean difficulty.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from description, or understand by implementing the present invention.
Below by embodiment, technical scheme of the present invention is described in further detail.
Detailed description of the invention
Below 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, provide a kind of method reducing the cement grinding roller press fault frequency.
Determine desired value: roll squeezer petrol station fault accounts for 76.5% of total failare type, as long as this fault solved, the number of stoppages can be reduced to (8.5 times/month) × (100 ﹪-76.5 ﹪)=2 time/month, therefore, we are decided to be 2 times/month desired value is feasible.
Strategy table in technical solution of the present invention:
。
Countermeasure in technical solution of the present invention is implemented:
Implement one: change petrol station motor contactor.
Contacts of contactor is originally seriously aging, contact has been oxidized seriously through use for many years, contact oxidizing blackening, contact resistance becomes much larger, when contact resistance becomes large, the voltage signal sending PLC to will diminish, when the little least limit voltage to PLC of voltage signal, the contact that PLC meeting false judgment has closed disconnects, and this causes roll squeezer fault stop jumping with regard to causing PLC to send wrong fault message.So we change aging contactor: former contactor is the LC1-E09 collection of contact device of Schneider, and the configuration design of this contactor is open, and dust can be easy to enter into inside contact mechanism and go.The situation that we are many according to on-the-spot ash, selects another contactor, and be the LC1-D09 series of Schneider, the configuration design of this contactor is enclosed, can to a certain degree prevent dust from entering.
Implement two: change petrol station motor heat relay.
The effect of motor heat relay is protection motor overload; when motor overload; current of electric can increase above Rated motor electric current; electrothermal relay is serially connected in electric motor loop; when current of electric becomes large, according to formula Q=I*I*R, caloric value Q greatly increases with electric current I; bimetal leaf in electrothermal relay makes contact disconnect because of temperature distortion, according to the break-make of contact, PLC judges whether motor transships.The aging PLC of causing of contact can not accurately judge overload fault.So we have changed new electrothermal relay according to the parameter specification of former electrothermal relay.
Implement three: cleaning dust.
Cement production process can produce dust, and accumulation can have dust gradually in switch board, general dust is non-conductor, falls in switch and can cause poor contact of contacts, and then causing trouble occurs.For this reason, we arrangement personnel have carried out once clearing up to switch board, with electronic dust blower, the dust in cabinet are cleaned out, and ensure the normal work of electric device.
Implement four: formulate new maintenance regulation and prevent collection ash in cabinet.
Electric substation's administration of health rule originally only focuses on ground health in electric substation, and do not relate to the hygienic state in switch board, generally, the health in switch board only just can arrange personnel to blow ash once annual stopping between kiln turn(a)round.In order to solve the impact of dust on equipment, our revised " electric substation's administration of health regulation ", includes in the hygienic state in switch board in regular maintenance, prevents dust on the impact of electrical equipment.
Effect inspection in technical solution of the present invention:
1. result examination: in late July, 2014, we complete the improvement of roll squeezer petrol station.In consolidation, we add up according to the roll squeezer ruuning situation of the record of electrician's night shift room to year January in August, 2014 to 2015, and the fault frequency is as shown in the table:
。
Known according to above statistics, after transformation, the roll squeezer number of stoppages have decreased to 0.5 time/month by original 8.5 times/month, lower than predetermined target value 2 times/month, achieves our target.
2. economic benefit: (1) reduces the loss that roll squeezer fault causes grinding machine to be shut down: on average need process 1.6 hours after each petrol station fault occurs, the average annual power generating ratio time is: (8.5-0.5) secondary/moon × 12 months × 1.6 hours/time × 2 grind=307.2 hours.The unit-hour output of every platform cement grinding mill is 90T/h, and the average profit of cement per ton is 5 yuan, and benefit is: 307.2 × 90 × 5=138240 unit
(2) Master Cost is transformed: 65 yuan, total cost=contactor × 8+electrothermal relay 85 yuan × 8=1200 yuan.
So the direct economic benefit transforming latter a year is about 138240-1200=137040 unit.
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 (3)
1. reduce a method for the cement grinding roller press fault frequency, it is characterized in that, comprising:
(1) allocate petrol station motor contactor and petrol station motor heat relay, and periodic inspection;
(2) increase hurricane globe and heat abstractor to switch board, periodic inspection also clears up dust.
2. the method for the reduction cement grinding roller press fault frequency according to claim 1, is characterized in that, step (1) in, allotment petrol station motor contactor and the operation of petrol station motor heat relay, specifically comprise:
The situation many according to on-the-spot ash, the contactor selected, be the LC1-D09 series of Schneider, the configuration design of this contactor is enclosed, can to a certain degree prevent dust from entering;
And/or,
The effect of motor heat relay is protection motor overload, when motor overload, current of electric can increase above Rated motor electric current, electrothermal relay is serially connected in electric motor loop, when current of electric becomes large, according to formula Q=I*I*R, caloric value Q greatly increases with electric current I, bimetal leaf in electrothermal relay makes contact disconnect because of temperature distortion, according to the break-make of contact, PLC judges whether motor transships; New electrothermal relay has been changed according to the parameter specification of former electrothermal relay.
3. the method for the reduction cement grinding roller press fault frequency according to claim 1 and 2, is characterized in that, step (1) in, the operation of described cleaning dust, specifically comprises:
With electronic dust blower, the dust in switch board is cleaned out, ensure the normal work of electric device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510383830.1A CN105149042B (en) | 2015-07-03 | 2015-07-03 | A kind of method for reducing the cement grinding roller press failure frequency |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510383830.1A CN105149042B (en) | 2015-07-03 | 2015-07-03 | A kind of method for reducing the cement grinding roller press failure frequency |
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| CN105149042A true CN105149042A (en) | 2015-12-16 |
| CN105149042B CN105149042B (en) | 2017-12-19 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867289A (en) * | 2016-04-07 | 2016-08-17 | 高必红 | Analysis processing method of stocker internal contracting brake fault |
| CN107562034A (en) * | 2017-07-14 | 2018-01-09 | 宝沃汽车（中国）有限公司 | Fault handling method and processing system on line |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2149174Y (en) * | 1992-10-28 | 1993-12-15 | 陶宏伟 | Nozzle for dust suction |
| CN101656166A (en) * | 2008-08-19 | 2010-02-24 | 林李杰 | Modular vacuum contactor |
| CN202586112U (en) * | 2012-05-04 | 2012-12-05 | 上海产联电气科技有限公司 | Air-cooled control cabinet for transformer |
| CN202721084U (en) * | 2012-08-23 | 2013-02-06 | 九川集团有限公司 | AC contactor with protective cover |
| CN103247478A (en) * | 2013-04-17 | 2013-08-14 | 田春 | A contact fully enclosed contactor |
| CN103341396A (en) * | 2013-07-28 | 2013-10-09 | 洛阳理工学院 | Dual temperature measurement and control protective device for main bearing of cement mill |
| CN204259345U (en) * | 2014-12-09 | 2015-04-08 | 安徽合力股份有限公司 | A kind of electric machine controller assembly apparatus of the electri forklift with tooth-like heat radiation |
-
2015
- 2015-07-03 CN CN201510383830.1A patent/CN105149042B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2149174Y (en) * | 1992-10-28 | 1993-12-15 | 陶宏伟 | Nozzle for dust suction |
| CN101656166A (en) * | 2008-08-19 | 2010-02-24 | 林李杰 | Modular vacuum contactor |
| CN202586112U (en) * | 2012-05-04 | 2012-12-05 | 上海产联电气科技有限公司 | Air-cooled control cabinet for transformer |
| CN202721084U (en) * | 2012-08-23 | 2013-02-06 | 九川集团有限公司 | AC contactor with protective cover |
| CN103247478A (en) * | 2013-04-17 | 2013-08-14 | 田春 | A contact fully enclosed contactor |
| CN103341396A (en) * | 2013-07-28 | 2013-10-09 | 洛阳理工学院 | Dual temperature measurement and control protective device for main bearing of cement mill |
| CN204259345U (en) * | 2014-12-09 | 2015-04-08 | 安徽合力股份有限公司 | A kind of electric machine controller assembly apparatus of the electri forklift with tooth-like heat radiation |
Non-Patent Citations (3)
| Title |
|---|
| 奚占新: "磨煤机油站掉闸原因分析及改造措施", 《河北电力技术》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105867289A (en) * | 2016-04-07 | 2016-08-17 | 高必红 | Analysis processing method of stocker internal contracting brake fault |
| CN107562034A (en) * | 2017-07-14 | 2018-01-09 | 宝沃汽车（中国）有限公司 | Fault handling method and processing system on line |
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| Publication number | Publication date |
|---|---|
| CN105149042B (en) | 2017-12-19 |
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Address after: No. 62 Liutai Road, Liunan District, Liuzhou City, Guangxi Zhuang Autonomous Region 545007 Patentee after: Guangxi Liuzhou Yufeng Cement Co.,Ltd. Country or region after: China Address before: No. 62 Liutai Road, Liunan District, Liuzhou City, Guangxi Zhuang Autonomous Region 545007 Patentee before: GUANGXI YUFENG CEMENT STOCK Co.,Ltd. Country or region before: China |
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