CN108223400A - A kind of pump valve linkage computer control method applied to pressure box culvert water delivery - Google Patents
A kind of pump valve linkage computer control method applied to pressure box culvert water delivery Download PDFInfo
- Publication number
- CN108223400A CN108223400A CN201711485920.7A CN201711485920A CN108223400A CN 108223400 A CN108223400 A CN 108223400A CN 201711485920 A CN201711485920 A CN 201711485920A CN 108223400 A CN108223400 A CN 108223400A
- Authority
- CN
- China
- Prior art keywords
- box culvert
- cleaning door
- control method
- pressure box
- water delivery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000004140 cleaning Methods 0.000 claims abstract description 40
- 238000005086 pumping Methods 0.000 claims description 13
- 239000000498 cooling water Substances 0.000 claims description 5
- 230000003068 static effect Effects 0.000 claims description 5
- 230000005284 excitation Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010338 mechanical breakdown Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000004883 computer application Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- 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
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
- F04D15/0022—Control, e.g. regulation, of pumps, pumping installations or systems by using valves throttling valves or valves varying the pump inlet opening or the outlet opening
-
- 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
-
- 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
- F04D15/0027—Varying behaviour or the very pump
-
- 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
- F04D15/0055—Rotors with adjustable blades
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a kind of pump valve linkage computer control method applied to pressure box culvert water delivery, in start process, fuser motor is closed in the case where unit is without reversion, and cleaning door is opened after motor enters state of drawing water；In stopping process, motor is closed in the case where cleaning door is closed to small guide vane.A kind of pump valve linkage computer control method applied to pressure box culvert water delivery proposed by the present invention, influence when can eliminate long range pressure box culvert water delivery state to Unit Commitment reach the reliable start and stop of unit safety, while can prolong the service life.
Description
Technical field
It links and counts the present invention relates to hydraulic engineering technical field more particularly to a kind of pump valve applied to pressure box culvert water delivery
Calculation machine control method.
Background technology
It is long range pressure box culvert water delivery outside pumping plant water outlet side rapid operation door cut-off device, it is unit, electrical equipment, quick
Cleaning door actuation time and sequence of movement mismate easily lead to unit starting overload or start failure, and when shutdown easily leads to machine
Group reversion or even generation fly ease, transient process state deteriorating.
Invention content
Technical problems based on background technology, the present invention propose a kind of pump valve applied to pressure box culvert water delivery and join
Dynamic computer control method.
A kind of pump valve linkage computer control method applied to pressure box culvert water delivery proposed by the present invention, start process
In, fuser motor is closed in the case where unit is without reversion, and cleaning door is opened after motor enters state of drawing water；Stop
During machine, motor is closed in the case where closing cleaning door and being closed to part.
Preferably, it in start process, is as follows：
S11, when unit remains static, water pump is adjusted to minimum laying angle, and cleaning door is reached first in advance and is opened
Spend threshold value；
S12, it is closed fuser motor；
S13, judge whether motor effectively closes a floodgate；
S14, it is then to open cleaning door completely, blade is adjusted to operation angle；
It is S15, no, then it redirects into accidental shutdown state, closes cleaning door.
Preferably, in step S14, operation angle is the normal operation angle of blade under design conditions.
Preferably, in step S11, cleaning door minimum aperture when the first aperture threshold value is worked normally for unit.
Preferably, it in stopping process, is as follows：
S21, under pumping plant operating states of the units, water pump blade is adjusted to larger laying angle, and work door section is closed
To the second aperture threshold value；
S22, fuser motor is disconnected；
S23, judge the whether effective separating brake of motor；
S24, it is then to completely close cleaning door；
It is S25, no, then phase down cleaning door.
Preferably, the second aperture threshold value is more than the first aperture threshold value.
Preferably, in step S24 after phase down cleaning door mechanical braking is put into when generating unit speed drops to 35%.
Braking, then, time-delay closing unit cooling water and wind turbine, into compressor emergency shutdown state are released when generating unit speed drops to 5%.
A kind of pump valve linkage computer control method applied to pressure box culvert water delivery proposed by the present invention, can eliminate it is long away from
Influence during from pressure box culvert water delivery state to Unit Commitment reaches the reliable start and stop of unit safety, while can prolong the service life.
In the present invention, to middle and low lift, water outlet side is long distance water transfer box culvert pumping plant machine (water pump), electric (motor), liquid
(cleaning door) is accurately controlled, and solves the startup-shutdown program that artificial in such pumping plant or conventional automated program can not be realized
It is required that.
Description of the drawings
Fig. 1 is a kind of pump valve linkage computer control method flow applied to pressure box culvert water delivery proposed by the present invention
Figure.
Specific embodiment
With reference to Fig. 1, a kind of pump valve linkage computer control method applied to pressure box culvert water delivery proposed by the present invention is opened
During machine, fuser motor is closed in the case where unit is without reversion, and work is opened after motor enters state of drawing water
Make door；In stopping process, motor is closed in the case that work door section is closed closing cleaning door to small guide vane.
Specifically, in the present invention, Conveyance Box Culvert buried over long distances is mounted on middle and low lift pumping plant water outlet side cut-off device
Outside, pumping plant cut-off device uses rapid operation door, to meet the needs of governing speed.
The pump valve linkage computer control method applied to pressure box culvert water delivery that present embodiment provides, start process
In, it is as follows：
S11, when unit remains static, water pump blade is adjusted to minimum laying angle, and cleaning door is reached in advance
One aperture threshold value.It in present embodiment, is closed by cleaning door and realizes cutout function, specific cleaning door ground clearance is maximum
When, cleaning door aperture is maximum；When cleaning door lands, cutout is realized.In present embodiment, the first aperture threshold value is cleaning door to ground
Identity distance is from less than or equal to 5cm.
In present embodiment, under unit stationary state：Generating unit speed≤5%, motor outlet breaker open operation, unit work
It is fully closed to make door.In this step, start unit under unit stationary state, unit starting condition includes：Unit is static, and unit is without electricity
Gas, mechanical breakdown, excitation system fault-free simultaneously enter working condition, motor outlet breaker open operation, the release of unit damper brake,
Gas system pressure is normal, and AC and DC operation circuit is normal, and straight-flow system is normal, and accident door is shown in a fully open operation, and pushes up rotor stroke
Involution, technical water supply pump operation are switched, guide vane blade angle is set as minimum laying angle.Specifically, in present embodiment, it is minimum
Laying angle is -6 °.
S12, fuser motor is closed, unit is switched to working condition and is drawn water.
S13, judge whether motor effectively closes a floodgate.This step, by judging that unit closes a floodgate to judge whether unit enters
It draws water state.
S14, it is then to open cleaning door completely, after operating steadily, blade is adjusted to operation angle, to draw water.Fortune
Row angle is -2 °.
In present embodiment, before complete unit enters state of drawing water, pass through step S11, it is ensured that unit does not have substantially
There is Reversion, so as to ensure that unit breaker is closed in the case where unit does not invert, ensure work safety.
It is S15, no, then it redirects into accidental shutdown state, closes cleaning door.
The pump valve linkage computer control method applied to pressure box culvert water delivery that present embodiment provides, stopping process
In, it is as follows：
S21, under pumping plant operating states of the units, water pump blade is adjusted to larger laying angle, and work door section is closed
To the second aperture threshold value.In present embodiment, the second aperture threshold value is more than the first aperture threshold value.
S22, fuser motor is disconnected.In this way, in present embodiment, disconnection motor breaks on the basis of step S21
Road device provides buffer time to the shutdown of unit.
S23, judge the whether effective separating brake of motor.
S24, it is then to completely close cleaning door.In present embodiment, cleaning door is closed under gate-dividing state, it is ensured that machine
Nonreversible or smaller reversion is organized, to ensure stop safe.
S25, no, then phase down cleaning door, prevents electromotor overload.
Specifically, in step S25 after phase down cleaning door, mechanical braking is put into when generating unit speed drops to 35%.
Braking, then, time-delay closing unit cooling water and wind turbine, into compressor emergency shutdown state are released when generating unit speed drops to 5%.
In present embodiment, under unit failure state, open and shut down control, specifically, unit failure state includes：1
Electic protection accident：Trip protection signal, excitation fault signal；2 mechanical protection signals：3 outside dead electricity signals：Protect decompression letter
Number
In present embodiment, often cover unit and include an at least motor.Below in conjunction with a specific embodiment to this
Invention is further explained.
In the present embodiment, by taking a two level water-distribution station as an example, under high hydraulic pressure water delivery state, for unit startup-shutdown is avoided to produce
Raw water hammer impacts box culvert and unit, avoids that unit is caused to invert and fly ease, water outlet side long range box culvert water transfer pumping plant valve closing
Start and stop computer application control method provided by the invention.
The water station is second level lift pumping station, designs the flow 36m that draws water3/ s, 4 sets (3 is standby with 1) of installing, water pump is
1950HLQ13.2-12.8 (1950 be water pump runner diameter) vertical full adjusting mixed-flow pump of type, auxiliary motor TL2200-28/
3250 vertical synchronous motors, rated speed 214.3r/min, single-machine capacity 2200kW, total installation of generating capacity 8800kW.
Water station water outlet control segment length 15.0m, is the buried reinforced concrete box-structure of 4 hole vertical shaft types, equal per pore cross section size
For 6.5m × 4.0m (wide × high), 2 sets of stop gates, the using and the reserved are set per hole.Water outlet is contained after control section before surge shaft
Collect, 4 unit runners are mutually communicated, and the buried pressurized water transmission through being about 6.5km, which is secretly contained, is connected to three or eight canals.Underground, which is secretly contained, adopts
With reinforced concrete box culvert structural shape, an exhaust valve pit is set per 1km along the line, 3km sets an inspection-pit.
Water station water outlet side is adopted for the middle and low lift pumping plant pump valve linkage computer control system of long range pressure box culvert water delivery
It with open fully-distributed system, is made of control centre's system and local control unit etc., the preferential master stage of local control grade.Pump
Bus type Ethernet can be used in communication between stand control central apparatus and its between local control unit.Multifunctional measuring
The equipment such as table, protective device, direct current cabinet, motor excitation screen, temperature polling instrument, scheduling, ultrasonic flowmeter can pass through communication
Supervisor is connected to Ethernet.
LCU (Local Control Unit, local control unit) is responsible for unit and its mating excitation unit, unit
Auxiliary device, the quantity of state (switching value) of unit protective relaying device, the electrical quantity of unit, non electrical quantity (analog quantity) are acquired
And control；It is responsible for outside water level, water level in machine set outlet accident door hydraulic device, whole station oil, gas and water system and pumping plant
It the data acquisition of difference, electrical equipment of stand and anti-flood valve, intake gate etc. and monitors.
The water station computer system control flow
One) be switched on control flow
Under static state, motor outlet breaker open operation, unit cleaning door are fully closed for unit, accident door standard-sized sheet, pre-selection
Pumping operation mode.It checks and meets each starting conditions, unit is without electrical, mechanical breakdown, excitation system working condition fault-free, unit
Damper brake discharges, and gas system pressure is normal, and AC and DC operation circuit and straight-flow system are normal, top rotor travel switch involution, skill
Art water supply pump operation, guide vane blade angle are set as -6 °.Influent side water level is not less than minimum operation water level, input unit cooling
Water, wind turbine simultaneously confirm there is hydraulic pressure in long range box culvert at this time, when opening cleaning door away from ground 5cm, do not have substantially instead in guarantee unit
Fuser motor is closed in the case of turning, enters state of drawing water after confirming the validity combined floodgate, opens rapid operation door, guide vane blade angle
It is set as -2 ° of operation angle.Otherwise it redirects into accidental shutdown state, closes cleaning door.
Two) control flow is shut down
Unit under operation, shut down operating mode or shut down in electrical and mechanical accident, confirmed entrance by pre-selection
Flow is shut down, when closing cleaning door away from ground 5cm, disconnects fuser motor, enters fully closed cleaning door or thing after confirming the validity separating brake
Therefore door sub-process, if not receiving the effective sub-gate signal of fuser motor, stop closing the door, prevent electromotor overload.Generating unit speed
Drop to 35% input mechanical braking.Generating unit speed drops to 5%, releases braking, time-delay closing unit cooling water, wind turbine and true
Recognize, into compressor emergency shutdown state.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of pump valve linkage computer control method applied to pressure box culvert water delivery, it is characterised in that：In start process,
Unit without reversion in the case of be closed fuser motor, and cleaning door is opened after motor enters state of drawing water；It shut down
Cheng Zhong closes motor in the case where cleaning door is closed to part and closed.
2. it is applied to the pump valve linkage computer control method of pressure box culvert water delivery as described in claim 1, which is characterized in that
In start process, it is as follows：
S11, when unit remains static, water pump is adjusted to minimum laying angle, and cleaning door is reached to the first aperture threshold in advance
Value；
S12, it is closed fuser motor；
S13, judge whether motor effectively closes a floodgate；
S14, it is then to open cleaning door completely, blade is adjusted to operation angle；
It is S15, no, then it redirects into accidental shutdown state, closes cleaning door.
3. it is applied to the pump valve linkage computer control method of pressure box culvert water delivery as claimed in claim 2, which is characterized in that
In step S14, operation angle is the normal operation angle of blade under design conditions.
4. it is applied to the pump valve linkage computer control method of pressure box culvert water delivery as claimed in claim 2, which is characterized in that
In step S11, cleaning door minimum aperture when the first aperture threshold value is worked normally for unit.
5. it is applied to the pump valve linkage computer control method of pressure box culvert water delivery as claimed in claim 2, which is characterized in that
In stopping process, it is as follows：
S21, under pumping plant operating states of the units, water pump blade is adjusted to larger laying angle, and work door section is closed to the
Two aperture threshold values；
S22, fuser motor is disconnected；
S23, judge the whether effective separating brake of motor；
S24, it is then to completely close cleaning door；
It is S25, no, then phase down cleaning door.
6. it is applied to the pump valve linkage computer control method of pressure box culvert water delivery as claimed in claim 5, which is characterized in that
Second aperture threshold value is more than the first aperture threshold value.
7. it is applied to the pump valve linkage computer control method of pressure box culvert water delivery as claimed in claim 5, which is characterized in that
After completely closing cleaning door in step S24, mechanical braking is put into when generating unit speed drops to 35%.Drop in generating unit speed
Braking, then, time-delay closing unit cooling water and wind turbine, into compressor emergency shutdown state are released when 5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711485920.7A CN108223400B (en) | 2017-12-30 | 2017-12-30 | A kind of pump valve linkage computer control method applied to pressure box culvert water delivery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711485920.7A CN108223400B (en) | 2017-12-30 | 2017-12-30 | A kind of pump valve linkage computer control method applied to pressure box culvert water delivery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108223400A true CN108223400A (en) | 2018-06-29 |
| CN108223400B CN108223400B (en) | 2019-06-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711485920.7A Active CN108223400B (en) | 2017-12-30 | 2017-12-30 | A kind of pump valve linkage computer control method applied to pressure box culvert water delivery |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242591A (en) * | 2019-07-31 | 2019-09-17 | 甘肃省景泰川电力提灌管理局 | A kind of pump valve interlock method that High head Pumping Station is controlled based on PLC |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205298012U (en) * | 2016-01-07 | 2016-06-08 | 扬州大学 | Novel two -way pump station cutout device |
| CN107514369A (en) * | 2017-09-29 | 2017-12-26 | 浙江融乐环境科技有限公司 | A kind of linkage of water pump and water pump water outlet valve |
-
2017
- 2017-12-30 CN CN201711485920.7A patent/CN108223400B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205298012U (en) * | 2016-01-07 | 2016-06-08 | 扬州大学 | Novel two -way pump station cutout device |
| CN107514369A (en) * | 2017-09-29 | 2017-12-26 | 浙江融乐环境科技有限公司 | A kind of linkage of water pump and water pump water outlet valve |
Non-Patent Citations (3)
| Title |
|---|
| 李庆生等: "新型的大型泵闸控制台", 《上海水力》 * |
| 陈德全等: "金鸡岩泵站泵与泵阀联动控制的开停机流程设计", 《四川水利》 * |
| 黄宝南: "大型泵站快速闸门的程序控制", 《农田水利与小水电》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110242591A (en) * | 2019-07-31 | 2019-09-17 | 甘肃省景泰川电力提灌管理局 | A kind of pump valve interlock method that High head Pumping Station is controlled based on PLC |
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| Publication number | Publication date |
|---|---|
| CN108223400B (en) | 2019-06-11 |
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| CB03 | Change of inventor or designer information |
Inventor after: Bao Shumei Inventor after: Liu Changyi Inventor after: Guo Chang Inventor before: Zhao Yuqiang Inventor before: Gao Shiwang Inventor before: Yu Yong Inventor before: Zhou Jin Inventor before: Lu Xuetao Inventor before: Zhang Peng Inventor before: Wang Genxia Inventor before: Li Na Inventor before: Yang Xiaochun |
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Address after: 230088 No. 185 Haitang Road, Hefei Hi-tech Development Zone, Anhui Province Patentee after: Anhui water resources and Hydropower Survey, design and Research Institute Co.,Ltd. Address before: 230088 No. 185 Haitang Road, hi tech Zone, Anhui, Hefei Patentee before: Anhui Survey and Design Institute of Water Conservancy and Hydropower |
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Address after: No.185, Haitang Road, Hefei hi tech Development Zone, Anhui Province, 230088 Patentee after: Anhui water conservancy and hydropower survey and design research institute Co.,Ltd. Country or region after: China Address before: No.185, Haitang Road, Hefei hi tech Development Zone, Anhui Province, 230088 Patentee before: Anhui water resources and Hydropower Survey, design and Research Institute Co.,Ltd. Country or region before: China |
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