CN101608613B - Zero-disturbance switching method of pipeline transportation standby pump - Google Patents
Zero-disturbance switching method of pipeline transportation standby pump Download PDFInfo
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- CN101608613B CN101608613B CN2009101318561A CN200910131856A CN101608613B CN 101608613 B CN101608613 B CN 101608613B CN 2009101318561 A CN2009101318561 A CN 2009101318561A CN 200910131856 A CN200910131856 A CN 200910131856A CN 101608613 B CN101608613 B CN 101608613B
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- pump
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- replaced
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
- F04D15/029—Stopping of pumps, or operating valves, on occurrence of unwanted conditions for pumps operating in parallel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/64—Mounting; Assembling; Disassembling of axial pumps
- F04D29/648—Mounting; Assembling; Disassembling of axial pumps especially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a zero-disturbance switching method of a pipeline transportation standby pump; when a pump to be replaced is in main mode, the method comprises the following steps of: (1) pre-starting the backup pump and reducing the speed of the pump in normal operation by about 30%; (2) opening an inlet/outlet valve of the standby pump and ensuring that a sewage valve is in closed state; (3) setting the mode of the standby pump as the main mode; (4) starting the standby pump; (5) stopping the replaced pump and closing the inlet/outlet valve of the replaced pump when the speed of the standby pump achieves 30%; (6) increasing the speed of the standby pump to be normal; and (7) troubleshooting the replaced pump. The use of the method can safely switch the standby pump when the troubleshooting is carried out on the main pump and stop the pump to be troubleshot; and when a single-stage pump station stops a certain main pump, the operation does not affect the normal operation of other stations.
Description
Technical field
The invention belongs to high pressure length apart from the ore slurry pipeline transportation art, the no disturbance that particularly relates to multi stage pumping station fault pump and stand by pump is switched.
Background technique
Ore pulp carries high pressure long-distance pipe system mainly to be made up of main pump, feeding pump, stirring chest, thickner, underflow pump and high and low pressure valve and high pressure resistant pipeline.
Ore pulp carries the high pressure long-distance pipe in running, and the strange good pump of capital equipment may break down in running or will carry out scheduled overhaul, and come into operation stand by pump this moment, wishes not shut down in handoff procedure.
Summary of the invention
In order to guarantee the safe operation of pipeline, reduce the pipeline outage rate, the invention provides a kind of zero-disturbance switching method of pipeline transportation standby pump, wherein being replaced pump is main pattern, comprises the steps:
(1), the pretrigger stand by pump, the pump speed of normal process pump is dropped to about 30%;
(2), the terminal valve of stand by pump is opened, guarantee that blowdown valve is a closed condition;
(3), the pattern of stand by pump is set to main pattern;
(4), start stand by pump;
(5), when the pump speed of stand by pump reaches 30%, stop being replaced pump, close and be replaced the pump terminal valve;
(6), the stand by pump pump speed is risen to normally;
(7), overhaul being replaced pump.
Preceding in described step (5), the other process pump that will be in less important pattern changes main pattern into, prevents from when stopping being replaced pump that this process pump is followed to be replaced pump and to shut down.
The invention also discloses and being replaced pump is stand by pump undisturbed switching method under less important or the single-mode, comprises the steps:
(1), the pretrigger stand by pump, the pump speed of normal process pump is dropped to about 30%;
(2), the terminal valve of stand by pump is opened, guarantee that blowdown valve is a closed condition;
(3), the pattern with stand by pump is made as less important or single-mode;
(4), stop being replaced pump;
(5), start stand by pump;
(6), when the pump speed of stand by pump reaches 30%, during stabilization of speed, the pump speed that improves normal process pump is to normal;
(7), overhaul being replaced pump.
Adopt method of the present invention, can safe cut-in stand-by pump when main pump overhauls, stop the pump that will overhaul; When stopping certain main pump, the single-stage pumping plant do not influence the normal operation at other stations.
Description of drawings
Fig. 1: the many pumps of pipeline of the present invention switch schematic representation.
Embodiment
Below in conjunction with accompanying drawing the present invention is specifically described.
Fig. 1 shows the capital equipment of each pumping plant in the system, comprises slag stock pump 1 and three main pumps, and the import and export of every main pump all have valve, and wherein import is the cutter valve, exports to be ball valve; In common three main pumps one as stand by pump, in addition two operations.For convenience, three main pumps are divided into stand by pump 2, normal process pump 3 and fault pump 4 among the present invention.In normal operation, normal process pump 3 and fault pump 4 be in operation, and fault pump 4 problem occurred at run duration, it need be shut down, and use stand by pump 2, but not allow whole system stop again.
Ore pulp is carried in the high pressure long-distance pipe system, a pumping plant can be in independently excited cavity, also can be in even molding formula, and for three pumps of same pumping plant, it can be arranged to main, less important, single these several different patterns and control with other pumping plant.Between main pattern and the less important pattern is related, during variation on the pump generation speed of main pattern, same velocity variations also can take place in the pump of less important pattern thereupon, and single-mode neither can be subjected to influence main and less important mode pump, itself also can not influence pump main and less important pattern.
(1), carry out the pumping plant of cut-in stand-by pump and other station when being independent operation mode when need:
1, the fault pump is main pattern:
(1), pretrigger stand by pump 2, reduce about the pump speed to 30% of normal process pump 3;
(2), the terminal valve of stand by pump 2 is opened (guaranteeing that blowdown valve is a closed condition);
(3), the pattern with stand by pump 2 is made as main pattern;
(4), start stand by pump 2;
(5), reach about 30% when the pump speed of stand by pump, during stabilization of speed, (if normal process pump 3 is less important pattern, need to change its pattern into main pattern earlier, prevent that this pump is followed fault pump 4 and shut down when stopping the fault pump), stop fault pump 4, closing fault pump 4 terminal valves;
(6), two process pumps, 2,3 pump speeds are risen to normally;
(7), fault pump 4 faults are overhauled.
2, the fault pump is less important or single-mode:
(1), pretrigger stand by pump 2, reduce about pump speed to 30%;
(2), the terminal valve of stand by pump 2 is opened (guaranteeing that blowdown valve is a closed condition);
(3), the pattern with stand by pump 2 is made as less important or single-mode;
(4), stop fault pump 4;
(5), start stand by pump 2;
(6), when the pump speed of stand by pump 2 reaches about 30%, during stabilization of speed, the pump speed that improves two process pumps 2,3 is to normal;
(7), fault pump 4 faults are overhauled.
(2), the switching of stand by pump when multipole pumping plant is even beaten
1, the fault pump is main pattern:
(1), pretrigger stand by pump 2, reduce about pumping plant pump speeds to 30% at different levels, can do suitable adjustment (reducing pumping plant pump speeds at different levels should manually carry out under the control) according to actual pressure pumping plant pump speeds at different levels;
(2), the terminal valve of stand by pump 2 is opened (guaranteeing that blowdown valve is a closed condition);
(3), the pattern with stand by pump 2 is made as main pattern;
(4), start stand by pump 2, after stand by pump 2 starts, note pumping plant inlet and outlet pressures at different levels situation of change (as switch be higher level's pumping plant, need pump speed according to the variation rising subordinate pumping plant of inlet pressure; As switch for subordinate's pumping plant, after stand by pump 2 starts, should be according to the pump speed of the inlet pressure rising higher level pumping plant that switches pumping plant; As to switch pumping plant be intermediate pump station, then needs to promote according to the pump speed that inlet pressure changes its upper and lower level pumping plant), reach a state of equilibrium up to completely;
(5), the pump speed when stand by pump 2 reaches 30%, during stabilization of speed, if (normal process pump 3 is less important pattern, need to change its pattern into main pattern earlier, prevent that this pump 3 is followed the fault pump and shut down when stopping fault pump 4), stop fault pump 4, (reducing pumping plant pump speeds at different levels to all fronts balance), closing fault pump 4 terminal valves according to pumping plants at different levels actual entry pressure;
(6) pump speed is promoted to normally completely;
(7), fault pump 4 faults are overhauled.
2, fault pump 4 is less important or single-mode:
(1), pretrigger stand by pump 2, reduce pumping plant pump speeds to 30% at different levels, can do suitable adjustment (reducing pump speed pumping plants at different levels should manually carry out under the control) according to actual pressure pumping plant pump speeds at different levels;
(2), the terminal valve of stand by pump 2 is opened (guaranteeing that blowdown valve is a closed condition);
(3), the pattern with stand by pump 2 is made as less important or single-mode;
(4), stop fault pump 4, when stopping fault pump 4, start stand by pump 2 according to the variation of fault pump 4 actual number of strokes (as the startup of the strange good pump of process pump, stop all to have a ramp type process) in good time, the inlet pressure of level pumping plant is in a state stably before and after can making like this, note the variation of each pumping plant inlet pressure in this process, and pump speed is made corresponding adjustment;
(5), after stand by pump 2 starts normal, fault pump 4 and stops, closing fault pump 4 terminal valves are promoted to each station pump speed normally;
(6), the fault failure of pump is overhauled.
Claims (8)
1. zero-disturbance switching method of pipeline transportation standby pump, wherein being replaced pump is main pattern, it is characterized in that comprising the steps:
(1), the pretrigger stand by pump, the pump speed of normal process pump is dropped to about 30%;
(2), the terminal valve of stand by pump is opened, guarantee that blowdown valve is a closed condition;
(3), the pattern of stand by pump is set to main pattern;
(4), start stand by pump;
(5), when the pump speed of stand by pump reaches 30%, stop being replaced pump, close and be replaced the pump terminal valve;
(6), the stand by pump pump speed is risen to normally;
(7), overhaul being replaced pump.
2. zero-disturbance switching method of pipeline transportation standby pump according to claim 1; it is characterized in that: preceding in described step (5); the other process pump that will be in less important pattern changes main pattern into, prevents from when stopping being replaced pump that this process pump is followed to be replaced pump and to shut down.
3. zero-disturbance switching method of pipeline transportation standby pump according to claim 1 and 2 is characterized in that: reduce pump speed by manual control.
4. according to the zero-disturbance switching method of pipeline transportation standby pump of claim 3, it is characterized in that, when pumping plant is in company's molding formula, in step (1), reduce about pumping plant pump speeds to 30% at different levels.
5. zero-disturbance switching method of pipeline transportation standby pump according to claim 4 is characterized in that, when pumping plant is in when connecting the molding formula, in step (4) according to the raise pump speed of corresponding pumping plant of the variation of inlet pressure.
6. zero-disturbance switching method of pipeline transportation standby pump according to claim 5 is characterized in that, when switch when higher level's pumping plant, according to the pump speed of the variation rising subordinate pumping plant of inlet pressure; When switch for the subordinate pumping plant time, according to the pump speed of the inlet pressure rising higher level pumping plant that switches pumping plant; When the pumping plant that switches was intermediate pump station, the pump speed that changes its upper and lower level pumping plant according to inlet pressure promoted.
7. zero-disturbance switching method of pipeline transportation standby pump, wherein being replaced pump is less important or single-mode, it is characterized in that comprising the steps:
(1), the pretrigger stand by pump, the pump speed of normal process pump is dropped to about 30%;
(2), the terminal valve of stand by pump is opened, guarantee that blowdown valve is a closed condition;
(3), the pattern with stand by pump is made as less important or single-mode;
(4), stop being replaced pump;
(5), start stand by pump;
(6), when the pump speed of stand by pump reaches 30%, during stabilization of speed, the pump speed that improves normal process pump is to normal;
(7), overhaul being replaced pump.
8. zero-disturbance switching method of pipeline transportation standby pump according to claim 7 is characterized in that: reduce pump speed by manual control.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101318561A CN101608613B (en) | 2009-04-09 | 2009-04-09 | Zero-disturbance switching method of pipeline transportation standby pump |
| PCT/CN2010/000093 WO2010115338A1 (en) | 2009-04-09 | 2010-01-21 | Zero-disturbance switching method for pipeline transportation standby pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101318561A CN101608613B (en) | 2009-04-09 | 2009-04-09 | Zero-disturbance switching method of pipeline transportation standby pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101608613A CN101608613A (en) | 2009-12-23 |
| CN101608613B true CN101608613B (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101318561A Active CN101608613B (en) | 2009-04-09 | 2009-04-09 | Zero-disturbance switching method of pipeline transportation standby pump |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101608613B (en) |
| WO (1) | WO2010115338A1 (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608613B (en) * | 2009-04-09 | 2011-06-29 | 云南大红山管道有限公司 | Zero-disturbance switching method of pipeline transportation standby pump |
| CN101806300B (en) * | 2010-04-26 | 2013-04-17 | 云南大红山管道有限公司 | Underflow pump blowoff valve device and switching method thereof |
| CN102873040B (en) * | 2012-09-18 | 2014-09-03 | 云南大红山管道有限公司 | Method for flushing main pump in pipeline transportation process of pulp |
| CN109854955B (en) * | 2018-12-06 | 2021-06-18 | 浙江浙能天然气运行有限公司 | Intelligent regulation control method for provincial level natural gas transmission station |
| CN109794465A (en) * | 2019-02-25 | 2019-05-24 | 昆山奥兰克泵业制造有限公司 | Formula mechanical pump cleaning system is not shut down online |
| CN110529417B (en) * | 2019-08-15 | 2020-07-14 | 西安陕鼓动力股份有限公司 | Automatic online cutting machine operation method of multi-machine parallel centrifugal compressor unit |
| CN110848573B (en) * | 2019-11-14 | 2021-06-18 | 云南大红山管道有限公司 | Double-line intercommunicated stirring tank of pipeline conveying pump station and control method thereof |
| CN111706786B (en) * | 2020-05-06 | 2021-12-14 | 西安长庆科技工程有限责任公司 | Crude oil switching integrated control device and control method |
| CN112228328B (en) * | 2020-10-20 | 2022-09-20 | 中煤科工集团重庆研究院有限公司 | Hot standby switching method for double extraction pumps |
| CN113237211A (en) * | 2021-01-27 | 2021-08-10 | 朱雪斌 | Intelligent air supply method and system for cooling and heating unit |
| CN113719457A (en) * | 2021-11-03 | 2021-11-30 | 华能（天津）煤气化发电有限公司 | Method for quickly switching multistage centrifugal cryogenic liquid pump of air separation device |
| CN114151734A (en) * | 2021-11-30 | 2022-03-08 | 诸暨市天然气有限公司 | Remote management method for natural gas transportation pipeline |
| CN114151778B (en) * | 2021-12-03 | 2024-03-01 | 无锡华光环保能源集团股份有限公司 | Boiler structure without stopping furnace during overhaul and furnace stopping switching method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4179242A (en) * | 1978-04-26 | 1979-12-18 | Hitachi, Ltd. | Method and apparatus for liquid supply |
| JPS572487A (en) * | 1980-06-06 | 1982-01-07 | Yaskawa Electric Mfg Co Ltd | Automatic shift operating procedure for pump |
| SU937781A1 (en) * | 1980-07-07 | 1982-06-23 | Винницкий Проектно-Конструкторский Технологический Институт | Apparatus for automatic control of pumping station |
| CN2109466U (en) * | 1992-01-07 | 1992-07-08 | 王猛 | Automatic working device for spare pump |
| JP2006153023A (en) * | 2006-01-30 | 2006-06-15 | Hitachi Industrial Equipment Systems Co Ltd | Liquid supply device for waterline |
| CN201218185Y (en) * | 2008-05-09 | 2009-04-08 | 济南重工股份有限公司 | Low pressure pump switching circuit for high/low-pressure lubricating station |
| CN101608613B (en) * | 2009-04-09 | 2011-06-29 | 云南大红山管道有限公司 | Zero-disturbance switching method of pipeline transportation standby pump |
-
2009
- 2009-04-09 CN CN2009101318561A patent/CN101608613B/en active Active
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2010
- 2010-01-21 WO PCT/CN2010/000093 patent/WO2010115338A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN101608613A (en) | 2009-12-23 |
| WO2010115338A1 (en) | 2010-10-14 |
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