CN1672800A - Hydraulic variable loading system for roller-plate coal mill - Google Patents
Hydraulic variable loading system for roller-plate coal mill Download PDFInfo
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- CN1672800A CN1672800A CNA2005100463273A CN200510046327A CN1672800A CN 1672800 A CN1672800 A CN 1672800A CN A2005100463273 A CNA2005100463273 A CN A2005100463273A CN 200510046327 A CN200510046327 A CN 200510046327A CN 1672800 A CN1672800 A CN 1672800A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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Abstract
The hydraulic variable loading system for roller-plate coal mill in power station, cement mill, etc. consists of filter, motor, two-gang pump, high pressure bi-directional filter, pressure speed variator, energy accumulator, two-position four-way solenoid valve, hydraulic cylinder, proportional overflow valve, etc. The motor drives the two-gang pump to provide the hydraulic kinetic energy, and under the control in the central control room via the pressure speed variator, proportional overflow valve and the hydraulic variable loading system, the work pressure is applied to the hydraulic cylinder cavity. The system of the present invention is novel, safe and reliable, and makes the coal mill operate stably at low load.
Description
Technical field:
The present invention relates to the hydraulic variable loading system of roller-plate coal mill equipment in power station, the cement field of combustion technology.
Background technology:
At present, roller-plate coal mill has been widely used in the industries such as home and abroad station, metallurgy, chemical industry, cement in the coal burning system equipment, domestic in recent years roller-plate coal mill is constantly improved, but also there are many problems, coal pulverizer can not safe operation under the underload situation, easily produce vibration, damages coal pulverizer body and coal-grinding parts.Coal pulverizer is in unsettled running status all the time, waste energy, influence the service life of reductor Michell bearing, gear, grinding roller and internal bearings, millstone sheet, coal pulverizer can not the random groups load variations be adjusted the pressure of milling of coal pulverizer automatically in running.Change difficulty behind the grinding machine parts wear, maintenance inconvenience, the time is long, and the equipment producer of making can not normally run, and economic loss is very big.Therefore, develop a kind of hydraulic variable loading system for roller-plate coal mill is new problem anxious to be solved always.
Summary of the invention:
The object of the present invention is achieved like this: whole system is by filter, liquid level gauge, thermometer, dual flow filter, two-position two-way solenoid valve, cooler, motor, double pump, choke valve, overflow valve, check valve, the high-voltage bidirectional filter, flow speed control valve, pressure transmission device, pressure gauge, accumulator, the two-position four-way hand-operated direction valve, the two-position four-way solenoid directional control valve, the bi-bit bi-pass solenoid directional control valve, hydraulic jack, proportional pressure control valve is formed, motor drags double pump hydraulic pressure kinetic energy is provided, set operating pressure value 11.5MPa through check valve by overflow valve, operating pressure oil is through choke valve, the high-voltage bidirectional filter, check valve, by pressure transmission device, proportional pressure control valve and hydraulic variable loading system switch board, pass through central control room, according to the roller-plate coal mill operating load, be scaled corresponding loading hydraulic pressure numerical signal and deliver to the hydraulic variable loading system switch board, the operating pressure that control hydraulic oil needs, through the two-position four-way hand-operated direction valve, the two-position four-way solenoid directional control valve, the bi-bit bi-pass solenoid directional control valve, the overflow valve Long-distance Control, through choke valve the hydraulic jack epicoele is loaded operating pressure, make roller-plate coal mill realize that hydraulic pressure becomes loading, thereby the roller-plate coal mill power of milling is complementary, has reduced roller-plate coal mill operating load power consumption; Double pump, choke valve, overflow valve provide and load the hydraulic jack rise, dual flow filter, cooler, two-position two-way solenoid valve, choke valve are that hydraulic oil is cleaned and cools off, choke valve, accumulator, overflow valve, flow speed control valve are to hydraulic oil voltage stabilizing work, and accumulator, overflow valve are to make hydraulic jack to operating oil pressure unloading and pressurize; Flow speed control valve, throttling are speed control loops, liquid level gauge, thermometer, check valve, pressure gauge are to be used for liquid level warning, show operating oil pressure and temperature, choke valve was regulated when being used for system oil and returning, choke valve is used to regulate the pressure of pressure gauge, choke valve, choke valve, choke valve are used for system oil pressure to be regulated, process filter oil sump tank when oil returns.Main points of the present invention are its structure and operation principle.Its operation principle is, it often is operation under positive pressure that roller-plate coal mill is in operation, in the coal pulverizer cylindrical shell pressure of wind powder mixture be higher than atmospheric, if the abrasive disk seat sound contact position of lower frame and coal pulverizer has wind powder mixture to leak, although taked a lot of sealing means, but sealing device damages frequent, influencing coal pulverizer normally moves, adopt the present invention to provide power by seal fan, be higher than more than the pressure 2000MPa of wind powder mixture in the coal pulverizer cylindrical shell at the built-in gas pressure that erects of sealing ring cavity, reveal in atmosphere thereby hinder the interior wind powder mixture of new coal pulverizer, improve the environment of equipment.Hydraulic variable loading system for roller-plate coal mill is in roller-plate coal mill hydraulic loaded mode on device structure, according to the roller-plate coal mill operating load, by central control room the roller-plate coal mill operating load is scaled corresponding loading hydraulic pressure strength values signal and delivers to the hydraulic variable loading system switch board, provide kinetic energy by the hydraulic variable loading system Hydraulic Station, by roller-plate coal mill hydraulic loaded apparatus, roller-plate coal mill operating load and the coal pulverizer power of milling are complementary, reduced roller-plate coal mill operating load power consumption, for equipment producer saves a large amount of electric energy, having improved equipment simultaneously mills service life of part, economize on the use of funds, reduce the time between overhauls(TBO).During underload coal pulverizer can safe operation under the underload situation, prevent vibration, protection coal pulverizer body and coal-grinding parts.Coal pulverizer is in stable running status all the time, and energy-saving effect is fairly obvious.Can prolong the mission of reductor Michell bearing, gear, grinding roller and internal bearings, millstone sheet.Coal pulverizer is in running, but the random groups load variations is adjusted the pressure of milling of coal pulverizer automatically.Hydraulic variable loading system for roller-plate coal mill compared with prior art; has novel science; the design uniqueness; low cost of manufacture; production efficiency improves; safe and reliable to operation; life-span is long; coal pulverizer is the energy safe operation under the underload situation; prevent vibration; protection coal pulverizer body and coal-grinding parts; coal pulverizer is in stable running status all the time; energy-saving effect is fairly obvious; can prolong the reductor Michell bearing; gear; grinding roller and internal bearings; the mission of millstone sheet; but coal pulverizer random groups load variations in running is adjusted the advantages such as the pressure of milling of coal pulverizer automatically, will be widely used in the power station; in the cement burning industry.
Description of drawings:
The present invention is described in detail below in conjunction with drawings and Examples:
Fig. 1 is a hydraulic work system schematic diagram of the present invention.
The specific embodiment:
Whole system is by filter 1, liquid level gauge 2, thermometer 3, dual flow filter 4, two-position two-way solenoid valve 5, cooler 6, motor 7, double pump 8, choke valve 9, overflow valve 10, choke valve 11, check valve 12, overflow valve 13, choke valve 14, high-voltage bidirectional filter 15, check valve 16, flow speed control valve 17, check valve 18, pressure transmission device 19, choke valve 20, pressure gauge 21, choke valve 22, accumulator 23, overflow valve 24, choke valve 25, two-position four-way hand-operated direction valve 26, choke valve 27, two-position four-way solenoid directional control valve 28, bi-bit bi-pass solenoid directional control valve 29, accumulator 30, overflow valve 31, hydraulic jack 32, flow speed control valve 33, choke valve 34, overflow valve 35, choke valve 36, choke valve 37, choke valve 38, proportional pressure control valve 39 is formed, motor 7 drags double pump 8 hydraulic pressure kinetic energy is provided, set operating pressure value 11.5MPa through check valve 12 by overflow valve 13, operating pressure oil is through choke valve 14, high-voltage bidirectional filter 15, check valve 16, by pressure transmission device 19, proportional pressure control valve 39 and hydraulic variable loading system switch board, pass through central control room, according to the roller-plate coal mill operating load, be scaled corresponding loading hydraulic pressure numerical signal and deliver to the hydraulic variable loading system switch board, the operating pressure that control hydraulic oil needs, through two-position four-way hand-operated direction valve 26, two-position four-way solenoid directional control valve 28, bi-bit bi-pass solenoid directional control valve 29, overflow valve 35 Long-distance Control, load operating pressure through 25 pairs of hydraulic jack 32 epicoeles of choke valve, make roller-plate coal mill realize that hydraulic pressure becomes loading, thereby the roller-plate coal mill power of milling is complementary, has reduced roller-plate coal mill operating load power consumption; Double pump 8, choke valve 9, overflow valve 10 provide and load hydraulic jack 32 rises, dual flow filter 4, cooler 6, two-position two-way solenoid valve 5, choke valve 37 are that hydraulic oil is cleaned and cools off, choke valve 22, accumulator 23, overflow valve 24, flow speed control valve 17 are to hydraulic oil voltage stabilizing work, and accumulator 30, overflow valve 31 are to make 32 pairs of operating oil pressure unloadings of hydraulic jack and pressurize; Flow speed control valve 33, choke valve 34 are speed control loops, liquid level gauge 2, thermometer 3, check valve 18, pressure gauge 21 are to be used for liquid level warning, show operating oil pressure and temperature, choke valve 27 was regulated when being used for system oil and returning, choke valve 20 is used to regulate the pressure of pressure gauge 21, choke valve 11, choke valve 36, choke valve 38 are used for system oil pressure to be regulated, process filter oil sump tank when oil returns.
Claims (1)
1, a kind of hydraulic variable loading system for roller-plate coal mill, whole system is by filter, liquid level gauge, thermometer, dual flow filter, two-position two-way solenoid valve, cooler, motor, double pump, choke valve, overflow valve, check valve, the high-voltage bidirectional filter, flow speed control valve, pressure transmission device, pressure gauge, accumulator, the two-position four-way hand-operated direction valve, the two-position four-way solenoid directional control valve, the bi-bit bi-pass solenoid directional control valve, hydraulic jack, proportional pressure control valve is formed, it is characterized in that: motor drags double pump hydraulic pressure kinetic energy is provided, set operating pressure value 11.5MPa through check valve by overflow valve, operating pressure oil is through choke valve, the high-voltage bidirectional filter, check valve, by pressure transmission device, proportional pressure control valve and hydraulic variable loading system switch board, pass through central control room, according to the roller-plate coal mill operating load, be scaled corresponding loading hydraulic pressure numerical signal and deliver to the hydraulic variable loading system switch board, the operating pressure that control hydraulic oil needs, through the two-position four-way hand-operated direction valve, the two-position four-way solenoid directional control valve, the bi-bit bi-pass solenoid directional control valve, the overflow valve Long-distance Control, through choke valve the hydraulic jack epicoele is loaded operating pressure, make roller-plate coal mill realize that hydraulic pressure becomes loading, thereby the roller-plate coal mill power of milling is complementary, has reduced roller-plate coal mill operating load power consumption; Double pump, choke valve, overflow valve provide and load the hydraulic jack rise, dual flow filter, cooler, two-position two-way solenoid valve, choke valve are that hydraulic oil is cleaned and cools off, choke valve, accumulator, overflow valve, flow speed control valve are to hydraulic oil voltage stabilizing work, and accumulator, overflow valve are to make hydraulic jack to operating oil pressure unloading and pressurize; Flow speed control valve, throttling are speed control loops, liquid level gauge, thermometer, check valve, pressure gauge are to be used for liquid level warning, show operating oil pressure and temperature, choke valve was regulated when being used for system oil and returning, choke valve is used to regulate the pressure of pressure gauge, choke valve, choke valve, choke valve are used for system oil pressure to be regulated, process filter oil sump tank when oil returns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100463273A CN1307002C (en) | 2005-04-28 | 2005-04-28 | Hydraulic variable loading system for roller-plate coal mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100463273A CN1307002C (en) | 2005-04-28 | 2005-04-28 | Hydraulic variable loading system for roller-plate coal mill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1672800A true CN1672800A (en) | 2005-09-28 |
| CN1307002C CN1307002C (en) | 2007-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100463273A Expired - Fee Related CN1307002C (en) | 2005-04-28 | 2005-04-28 | Hydraulic variable loading system for roller-plate coal mill |
Country Status (1)
| Country | Link |
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| CN (1) | CN1307002C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100446862C (en) * | 2006-12-28 | 2008-12-31 | 长春发电设备有限责任公司 | Middle speed coal grinding machine |
| CN102112232A (en) * | 2008-08-07 | 2011-06-29 | 坡利西斯股份公司 | Roller mill and method for size reduction of ground material |
| CN102348509A (en) * | 2009-03-19 | 2012-02-08 | 勒舍有限公司 | Hydraulic array for roller mills |
| CN102397814A (en) * | 2011-11-14 | 2012-04-04 | 上海电气液压气动有限公司 | Safety guarantee mechanism in coal mill lubricating and cooling system |
| CN104747542A (en) * | 2015-03-21 | 2015-07-01 | 中国航天科工集团第六研究院四十一所 | Launch canister demolding power device |
| CN106246622A (en) * | 2016-08-22 | 2016-12-21 | 王恩峰 | Variable frequency hydraulic variable loading system |
| CN106762902A (en) * | 2016-12-20 | 2017-05-31 | 河北大唐国际唐山热电有限责任公司 | A kind of coal pulverizer oil supply system frequency conversion loading system |
| CN108105390A (en) * | 2017-12-25 | 2018-06-01 | 辽宁三三工业有限公司 | A kind of new complete-section tunnel boring machine is main to drive sealing system and its construction method |
| CN108514926A (en) * | 2018-04-04 | 2018-09-11 | 沈阳东北电力调节技术有限公司 | A kind of roller-plate Vertical Mill from pressurization fall roller operating mode to grinding operating mode differentiation conversion method |
| CN110966273A (en) * | 2019-12-25 | 2020-04-07 | 江苏指南润滑液压科技有限公司 | Intelligent coal vertical mill single-pump bidirectional loading hydraulic system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4002299A (en) * | 1975-09-29 | 1977-01-11 | Combustion Engineering, Inc. | Hydraulically loaded pulverizer journal |
| CN2041977U (en) * | 1988-07-22 | 1989-08-02 | 沈阳重型机器厂 | Hydraulic adjusting and safety mechanism of roller crusher |
| JPH0523607A (en) * | 1991-07-24 | 1993-02-02 | Onoda Cement Co Ltd | Hydraulic circuit in pressure device of roller mill |
| JP2751980B2 (en) * | 1992-05-22 | 1998-05-18 | 宇部興産株式会社 | Vertical crusher |
| CN1086462A (en) * | 1993-06-16 | 1994-05-11 | 向学雷 | Breaking machine with roller and disk |
-
2005
- 2005-04-28 CN CNB2005100463273A patent/CN1307002C/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100446862C (en) * | 2006-12-28 | 2008-12-31 | 长春发电设备有限责任公司 | Middle speed coal grinding machine |
| CN102112232A (en) * | 2008-08-07 | 2011-06-29 | 坡利西斯股份公司 | Roller mill and method for size reduction of ground material |
| CN102112232B (en) * | 2008-08-07 | 2013-07-17 | 坡利西斯股份公司 | Roller mill and method for size reduction of ground material |
| CN102348509A (en) * | 2009-03-19 | 2012-02-08 | 勒舍有限公司 | Hydraulic array for roller mills |
| CN102348509B (en) * | 2009-03-19 | 2014-07-02 | 勒舍有限公司 | Hydraulic array for roller mills |
| CN102397814A (en) * | 2011-11-14 | 2012-04-04 | 上海电气液压气动有限公司 | Safety guarantee mechanism in coal mill lubricating and cooling system |
| CN104747542A (en) * | 2015-03-21 | 2015-07-01 | 中国航天科工集团第六研究院四十一所 | Launch canister demolding power device |
| CN104747542B (en) * | 2015-03-21 | 2017-03-01 | 中国航天科工集团第六研究院四十一所 | A kind of launching tube demoulding power set |
| CN106246622A (en) * | 2016-08-22 | 2016-12-21 | 王恩峰 | Variable frequency hydraulic variable loading system |
| CN106762902A (en) * | 2016-12-20 | 2017-05-31 | 河北大唐国际唐山热电有限责任公司 | A kind of coal pulverizer oil supply system frequency conversion loading system |
| CN108105390A (en) * | 2017-12-25 | 2018-06-01 | 辽宁三三工业有限公司 | A kind of new complete-section tunnel boring machine is main to drive sealing system and its construction method |
| CN108514926A (en) * | 2018-04-04 | 2018-09-11 | 沈阳东北电力调节技术有限公司 | A kind of roller-plate Vertical Mill from pressurization fall roller operating mode to grinding operating mode differentiation conversion method |
| CN110966273A (en) * | 2019-12-25 | 2020-04-07 | 江苏指南润滑液压科技有限公司 | Intelligent coal vertical mill single-pump bidirectional loading hydraulic system |
| CN110966273B (en) * | 2019-12-25 | 2021-07-09 | 江苏指南润滑液压科技有限公司 | Intelligent coal vertical mill single-pump bidirectional loading hydraulic system |
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| Publication number | Publication date |
|---|---|
| CN1307002C (en) | 2007-03-28 |
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Granted publication date: 20070328 Termination date: 20170428 |
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| CF01 | Termination of patent right due to non-payment of annual fee |