CN105149042B - A kind of method for reducing the cement grinding roller press failure frequency - Google Patents
A kind of method for reducing the cement grinding roller press failure frequency Download PDFInfo
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- CN105149042B CN105149042B CN201510383830.1A CN201510383830A CN105149042B CN 105149042 B CN105149042 B CN 105149042B CN 201510383830 A CN201510383830 A CN 201510383830A CN 105149042 B CN105149042 B CN 105149042B
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- motor
- electrothermal relay
- dust
- petrol station
- contactor
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- 239000004568 cement Substances 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000428 dust Substances 0.000 claims abstract description 23
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 238000007689 inspection Methods 0.000 claims abstract description 9
- 230000000737 periodic effect Effects 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 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 5
- 230000009191 jumping Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000006467 substitution reaction Methods 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
- 238000007664 blowing Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000005611 electricity 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
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
Landscapes
- Crushing And Grinding (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention discloses a kind of method for reducing the cement grinding roller press failure frequency, including：(1) petrol station motor contactor and petrol station motor electrothermal relay, and periodic inspection are allocated；(2) increase hurricane globe to switch board and heat abstractor, periodic inspection simultaneously clear up dust.The method of the present invention for reducing the cement grinding roller press failure frequency, the defects of component is easy to aging, fault rate is high and cleaning difficulty is big can be overcome in the prior art, to realize the advantages of component is non-aging, fault rate is low and cleaning difficulty is small.
Description
Technical field
The present invention relates to cement processing technique field, in particular it relates to a kind of cement grinding roller press failure frequency that reduces
Method.
Background technology
The failure frequency is higher in recent years for my company 3# production line cement grinding rollers press, and investigation finds the oil of mainly roll squeezer
Station is broken down, and is caused roll squeezer error protection stop jumping and is caused cement grinding mill safety interlocking stop jumping, terminates the normal production of cement.
For effectively accomodation of activities, we have carried out cement grinding roller press failure frequency according in January, 2014 to June electrical service record
Secondary statistics, see the table below：
Table 1：Roll squeezer failure frequency statistics table
。
In order to preferably analyze failure, the main reason for causing roll squeezer failure is found, we are causing roll squeezer failure
Several reasons carried out statistics and according to statistical form depict failure arrangement.
Table 2：Roll squeezer fault statistics table
。
The petrol station failure frequency 39 times, institute faulty 76.5% is accounted for, thus may determine that causing cement grinding roller press failure frequency
The main reason for secondary high is：Roll squeezer petrol station failure；Causing the principal element of controller failure is：Component aging and switch board
Dust is more.
During the present invention is realized, inventor has found at least to exist in the prior art that component is easy to aging, fault rate
The defects of high and cleaning difficulty is big.
The content of the invention
It is an object of the present invention in view of the above-mentioned problems, propose it is a kind of reduce the cement grinding roller press failure frequency method,
To realize the advantages of component is non-aging, fault rate is low and cleaning difficulty is small.
To achieve the above object, the technical solution adopted by the present invention is：A kind of reduction cement grinding roller press failure frequency
Method, including：
(1) petrol station motor contactor and petrol station motor electrothermal relay, and periodic inspection are allocated；
(2) increase hurricane globe to switch board and heat abstractor, periodic inspection simultaneously clear up dust.
Further, step (1) in, allocate the operation of petrol station motor contactor and petrol station motor electrothermal relay, specific bag
Include：
The contactor of selection, it is that the LC1-D09 of Schneider is serial according to the situation more than live ash, the profile of the contactor
Design is enclosed, a certain degree of can prevent dust from entering；
And/or
The effect of motor electrothermal relay is protection motor overload, and when motor overload, current of electric can increase above motor
Rated current, electrothermal relay are serially connected in electric motor loop, when current of electric becomes it is big when, according to formula Q=I*I*R, caloric value Q with
Electric current I is significantly greatly increased, and because temperature distortion disconnects contact, PLC judges the bimetal leaf in electrothermal relay according to the break-make of contact
Whether motor overloads；New electrothermal relay has been changed according to the parameter specification of former electrothermal relay.
Further, step (1) in, it is described cleaning dust operation, specifically include：
The dust in switch board is cleaned out with electronic dust blower, ensures the normal work of electric device.
Various embodiments of the present invention reduction the cement grinding roller press failure frequency method, due to including：(1) petrol station electricity is allocated
Machine contactor and petrol station motor electrothermal relay, and periodic inspection；(2) hurricane globe and heat abstractor, periodic inspection are increased to switch board
And clear up dust；So as to overcome in the prior art the defects of component is easy to aging, fault rate is high and cleaning difficulty is big, with reality
The advantages of existing component is non-aging, fault rate is low and cleaning difficulty is small.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
Obtain it is clear that or being understood by implementing the present invention.
Below by embodiment, technical scheme is described in further detail.
Embodiment
The preferred embodiments of the present invention are illustrated below, it will be appreciated that preferred embodiment described herein is only used
In the description and interpretation present invention, it is not intended to limit the present invention.
According to embodiments of the present invention, there is provided a kind of method for reducing the cement grinding roller press failure frequency.
Determine desired value：Roll squeezer petrol station failure accounts for the 76.5% of total failare type, as long as this failure is solved, failure
Number can be reduced to（8.5 times/month）×（100 ﹪ -76.5 ﹪）=2 times/month, therefore, we desired value be set to 2 times/month be can
Capable.
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 aging originally is serious, and contact is oxidized serious through use for many years, contact oxidizing blackening
, contact resistance change is much larger, and when contact resistance becomes big, being sent into PLC voltage signal will diminish, and be arrived when voltage signal is small
During PLC least limit voltage, the closed contact of PLC meetings false judgment is to disconnect, and this results in PLC and sends mistake
Fault message causes roll squeezer failure stop jumping.Then we are changed the contactor to aging：Former contactor is Schneider
LC1-E09 collection of contact devices, the configuration design of the contactor is open, and dust can readily enter contact mechanism
The inside is gone.We are according to the situation more than live ash, are the LC1-D09 series of Schneider from another contactor, the contact
The configuration design of device is enclosed, can prevent dust from entering with a certain degree of.
Implement two：Change petrol station motor electrothermal relay.
The effect of motor electrothermal relay is protection motor overload, and when motor overload, current of electric can increase above motor
Rated current, electrothermal relay are serially connected in electric motor loop, when current of electric becomes it is big when, according to formula Q=I*I*R, caloric value Q with
Electric current I is significantly greatly increased, and because temperature distortion disconnects contact, PLC judges the bimetal leaf in electrothermal relay according to the break-make of contact
Whether motor overloads.The aging of contact causes PLC can not accurately judge overload fault.Then we are according to former electrothermal relay
Parameter specification has changed new electrothermal relay.
Implement three：Clear up dust.
Cement production process can produce dust, gradually accumulation can have dust in switch board, general dust is non-conductor, is fallen
Poor contact of contacts can be caused by entering in switch, and then cause failure.Therefore, we arrange personnel to carry out one to switch board
Secondary cleaning, the dust in cabinet is cleaned out with electronic dust blower, ensures the normal work of electric device.
Implement four：Formulating new maintenance regulation prevents collection ash in cabinet.
Electric substation's administration of health rule originally only focuses on ground health in electric substation, without reference to the health in switch board
State, generally, in switch board health only annually stop kiln maintenance during can just arrange personnel's soot blowing one
It is secondary.In order to solve influence of the dust to equipment, our reviseds《Electric substation's administration of health regulation》, defending in switch board
Raw state is included in regular maintenance, prevents influence of the dust to 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
In August, 2014 to the roll squeezer running situation in January, 2015 is counted according to the record of electrician's night shift room, the failure frequency
It is as shown in the table：
。
According to more than statistics understand, after transformation the roll squeezer number of stoppages by 8.5 original times/month have decreased to 0.5 time/
Month, less than time/month of predetermined target value 2, realize our target.
2. economic benefit：（1）Reduce the loss that roll squeezer failure causes grinding machine to be shut down：Each petrol station failure is average after occurring
Need processing 1.6 hours, it is average annual to reduce downtime and be：（8.5-0.5）Secondary/the moon × 12 month × 1.6 hour/time × 2 mills=
307.2 hour.The unit-hour output of every 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 yuan
（2）Transform Master Cost：65 yuan of total cost=contactor × 85 yuan of 8+electrothermal relay × 8=1200 yuan.
So the direct economic benefit for transforming latter year is about 138240-1200=137040 yuan.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., it should be included in the present invention's
Within protection domain.
Claims (1)
- A kind of 1. method for reducing the cement grinding roller press failure frequency, it is characterised in that including：(1) petrol station motor contactor and petrol station motor electrothermal relay, and periodic inspection are allocated；(2) increase hurricane globe to switch board and heat abstractor, periodic inspection simultaneously clear up dust,Step (1) in, allocate petrol station motor contactor operation, specifically include：The contactor of selection, it is that the LC1-D09 of Schneider is serial according to the situation more than live ash, the configuration design of the contactor It is enclosed, a certain degree of can prevents dust from entering；The operation of petrol station motor electrothermal relay is allocated, is specifically included：The effect of motor electrothermal relay is protection motor overload, and when motor overload, current of electric can increase above Rated motor Electric current, electrothermal relay are serially connected in electric motor loop, and when current of electric change is big, according to formula Q=I*I*R, caloric value Q is with electric current I is significantly greatly increased, and for the bimetal leaf in electrothermal relay because temperature distortion disconnects contact, PLC judges motor according to the break-make of contact Whether overload；The electrothermal relay more renewed according to the parameter specification of former electrothermal relay,In step (2), the operation of the cleaning dust, specifically include：The dust in switch board is cleaned out with electronic dust blower, ensures the normal work of electric device.
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| Application Number | Priority Date | Filing Date | Title |
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| 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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| 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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| CN105149042B true CN105149042B (en) | 2017-12-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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|---|---|---|---|---|
| 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 |
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| 热继电器在电机过载保护中的应用;翁朝晨等;《医药工程设计》;20070228;第28卷(第01期);第62-65页 * |
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| CN105149042A (en) | 2015-12-16 |
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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 |