CN112096591A - Automatic water level control method for accurate interception of integrated drainage pump station group - Google Patents
Automatic water level control method for accurate interception of integrated drainage pump station group Download PDFInfo
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- CN112096591A CN112096591A CN202011006137.XA CN202011006137A CN112096591A CN 112096591 A CN112096591 A CN 112096591A CN 202011006137 A CN202011006137 A CN 202011006137A CN 112096591 A CN112096591 A CN 112096591A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 249
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000010865 sewage Substances 0.000 claims abstract description 67
- 239000007788 liquid Substances 0.000 claims description 18
- 230000003068 static effect Effects 0.000 claims description 13
- 238000013461 design Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 5
- 230000010354 integration Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000003993 interaction Effects 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/02—Pumping installations or systems having reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Life Sciences & Earth Sciences (AREA)
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- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses a water level automatic control method for accurate interception of an integrated drainage pump station group, which adopts an automatic water level control system for accurate interception of the integrated drainage pump station group for regulation and control, wherein the automatic water level control system for accurate interception of the integrated drainage pump station group comprises but is not limited to: the system comprises an intercepting well, a first pump station group, a second pump station group, a grid well, a CSO (common control station), a PLC (programmable logic controller) control station and a sewage treatment plant; wherein, the tank body of the first pump station group is internally provided with n water pumps lifted to the municipal sewage pipe, which are called as water pumps A, and the tank body of the second pump station group is internally provided with n water pumps lifted to the CSO regulation pool, which are called as water pumps B. The water level control method can accurately intercept water, namely sewage is accurately intercepted to the municipal sewage pipe in dry seasons, part of mixed sewage is accurately intercepted to the municipal sewage pipe in rainy seasons, and the rest of mixed sewage overflows to the CSO regulation pool and can also adapt to reasonable promotion of the change of water amount.
Description
Technical Field
The invention relates to the field of municipal drainage, in particular to a water level automatic control method for accurate interception of an integrated drainage pump station group, which is particularly suitable for interception and CSO regulation of a combined drainage pipe network.
Background
Along with the construction of urban municipal infrastructure, the reconstruction of urban underground drainage pipelines is being carried out in a fierce manner in recent years, at present, one of the main serious problems of urban underground drainage pipeline networks is that drainage systems of most old urban areas still keep a confluence system, in order to solve the problem of sewage direct drainage, under the condition that no complete rainwater and sewage diversion is carried out upstream, the common technical means is terminal closure, the engineering technology of dry closure is simpler, the closure in rainy season is relatively more complex, the overflow pollution is controlled to the maximum degree, the closure multiple required in the rainy closure season is larger, and therefore, the problem of how to solve the closure mixed sewage outlet is the key. At present, the more application is that the mixed sewage that dams sets up two ways, and partly dams to municipal sewage pipe, and remaining overflow to CSO regulation pond, CSO regulation pond adopt the mode of off-peak emptying to get into municipal sewage pipe, finally to sewage treatment plant.
To the damming of confluence system drainage pipe network, most of them are arranged at the end of the pipe network, the buried depth of the damming pipeline is generally large, and the difficulties that the pipeline can not be inclined street in elevation and the current situation, the buried depth of the CSO regulation pool is too large and dangerous, and no pipeline is laid on the route and construction surface, etc. are faced, therefore, the commonly adopted technical means is the mode of lifting by adopting an integrated pump station, because the damming multiple is large, the damming amount is large, and a single pump station can not meet the requirements on scale, so the mode of lifting by adopting an integrated pump station group is commonly adopted.
Although the shut-off outlet is realized by lifting the integrated pump station group, two major problems still exist: how to realize accurate interception. If the flow intercepted to the municipal sewage pipe is large, the overflow to the CSO regulation and storage tank is small, the burden of the municipal sewage pipe and a sewage treatment plant is increased undoubtedly, the working state of overload operation is caused, and the waste is caused by the low utilization rate of the CSO regulation and storage tank; if the flow shunted to the municipal sewage pipe is small and the overflow to the CSO regulating reservoir is large, the volume of the CSO regulating reservoir is insufficient to cause overflow, and the interception flow is not controlled to achieve the expected effect. Secondly, how to adapt to the change of water quantity by the lifting mode of the water pump. Because no matter in dry season or rainy season, the flow all changes in real time, if adopt the operation mode that traditional many water pumps opened simultaneously, closed simultaneously, because the pump drainage flow that the water pump opened simultaneously is very big, the water level descends fast, and the water pump opens and stops will be very frequent, the life of the water pump that shortens greatly.
Aiming at the two problems, it is necessary to invent a water level control method of an integrated pump station group, which can realize accurate flow distribution and adapt to the change of water quantity.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects of the existing track acquisition technology and analysis method, the invention provides the automatic water level control method for the accurate interception of the integrated drainage pump station group.
In order to solve the technical problems, the invention adopts the technical scheme that:
the utility model provides a water level automatic control method that integration drain pump station group accurately dams, adopts the water level automatic control system that integration drain pump station group accurately dams to regulate and control, and the water level automatic control system that integration drain pump station group accurately dams includes but not limited to: the system comprises an intercepting well, a first pump station group, a second pump station group, a grid well, a CSO (common control station), a PLC (programmable logic controller) control station and a sewage treatment plant; wherein, the tank body of the first pump station group is internally provided with n water pumps lifted to the municipal sewage pipe, which are called as water pumps A, and the tank body of the second pump station group is internally provided with n water pumps lifted to the CSO regulation pool, which are called as water pumps B; the intercepting well is connected with the grid well through an intercepting pipe, the grid well is respectively connected with a water pump A and a water pump B, the water pump A is connected with a sewage treatment plant through a municipal sewage pipe, the water pump B is connected with a CSO regulation pool, and the CSO regulation pool is provided with an emptying pipe and is connected to a municipal sewage pipe through the emptying pipe; the water pump A and the water pump B are respectively connected with a PLC control station; wherein n is a positive integer greater than 1;
the control method specifically comprises the following steps:
(1) when the flow is increased, the water level rises, the water pumps A are preferably started one by one, the total scale of the water pumps A is matched with the design scale, and at the moment, the intercepted mixed sewage is divided according to the design flow and is lifted to a municipal sewage pipe; if the water pump A is completely started, the water level continues to rise, the water pumps B are started one by one, the total scale of the water pumps B is matched with the design scale, and at the moment, the intercepted mixed sewage overflows according to the design flow and is lifted to a CSO regulation and storage tank; meanwhile, the water pump A still works;
(2) when the flow is reduced, the water level is reduced, the water pumps B are closed one by one, the water pumps with long operation time are closed preferentially until all the water pumps B are closed, if the water level continues to be reduced, the water pumps A are closed one by one, and the water pumps with long operation time are closed preferentially until all the water pumps A are closed;
(3) the PLC control station automatically uses the water pumps in turn according to the preset water pump running time, closes the water pumps with long running time and puts in standby water pumps to prevent standby equipment from being idle for a long time;
(4) the PLC control station is arranged on the site of the pump station to automatically control the water pump.
It needs to be further explained that a static pressure type liquid level transmitter is arranged in the tank body of the first pump station group and used for monitoring the real-time liquid level in the tank body of the pump station in real time, and the static pressure type liquid level transmitter is electrically connected with the PLC control station.
It should be further explained that the tank body of the second pump station group is internally provided with a static pressure type liquid level transmitter for monitoring the real-time liquid level in the tank body of the pump station in real time, and the static pressure type liquid level transmitter is electrically connected with the PLC control station.
It needs to be further explained that the PLC control station is connected with a touch screen, and the touch screen monitors the PLC control station and provides a human-computer interaction function;
it should be further explained that the PLC control station is connected to a central control room through a 4G communication module, and the central control room dynamically displays real-time operating conditions of each process flow segment and trend pictures of each process parameter through a high-resolution liquid crystal display, runs measurement and control software, downloads control parameters, and stores historical data and alarm data.
It should be further explained that the automatic water level control system for accurate cut-off of the integrated drainage pump station group can be provided with a plurality of groups of pump station tanks.
It should be further noted that the water pumps lifted to the municipal sewage pipes are called water pumps A (n stations), the set operating water levels HA0, HA1, HA2, … … HAn-1 and HAn, the water pumps lifted to the CSO storage tank are called water pumps B (n stations), the set operating water levels HB0, HB1, HB2 and HB3 … … HBn; the operation condition of the water pump is controlled by the water level, and the relationship between the water pump and the water pump is as follows:
compared with the prior art, the invention has the following positive effects:
1. aiming at the current combined drainage pipe network intercepting and transforming mode, the mixed sewage is intercepted to a municipal sewage pipe in dry seasons, the mixed sewage is provided with double outlet paths after the interception in rainy seasons, one part of the mixed sewage is intercepted to the municipal sewage pipe, and the rest of the mixed sewage overflows to a CSO regulation and storage pool;
2. the invention can ensure that the dry season sewage is not directly discharged, and the rainy season can ensure that the intercepted mixed sewage is discharged, and simultaneously the problems of municipal sewage pipes, sewage treatment plants, CSO regulation and storage tanks, capacity and load and the like are considered;
3. the lifting mode adapting to the flow change can effectively reduce the starting and stopping times of the water pump, prolong the service life of the water pump and reduce the later maintenance cost.
Drawings
FIG. 1 is a schematic plan view of combined flow cut-off and CSO regulation;
FIG. 2 is a schematic flow diagram of combined flow closure and CSO regulation;
FIG. 3: the water level of the invention is shown schematically;
FIG. 4: the control system of the invention is shown schematically;
wherein, the reference numbers and names in the figures are: 1. a catch basin; 2. a grid well; 3. a first pump station group; 4. a second set of pump stations; 5. a CSO regulation pool; 6. a municipal sewage pipe; 7. an emptying pipe; 8. a sewage treatment plant; 9. a shutoff pipe; 10. a PLC control station; 11. a central control room; 12. a touch screen; 13. a 4G communication module; 14. a static pressure level transmitter; 15. a water pump; 16. electric multifunctional parameter table.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1-2, an automatic water level control method for accurate interception of an integrated drainage pump station group adopts an automatic water level control system for accurate interception of an integrated drainage pump station group for regulation and control, and the automatic water level control system for accurate interception of an integrated drainage pump station group includes but is not limited to: the system comprises an intercepting well 1, a first pump station group 3, a second pump station group 4, a grid well 2, a CSO regulation pool 5, a PLC control station 10 and a sewage treatment plant 8; wherein, the tank body of the first pump station group 3 is internally provided with n water pumps lifted to the municipal sewage pipe, which are called as water pumps A, and the tank body of the second pump station group 4 is internally provided with n water pumps lifted to the CSO regulation pool 5, which are called as water pumps B; sewage enters an intercepting well 1 through a confluence sewage pipe, the intercepting well 1 is connected with a grid well 2 through an intercepting pipe 9, the grid well 2 is respectively connected with a water pump A and a water pump B, the water pump A is connected with a sewage treatment plant 8 through a municipal sewage pipe 6, the water pump B is connected with a CSO regulation and storage tank 5, the CSO regulation and storage tank 5 is provided with an emptying pipe 7 and is connected to the municipal sewage pipe 6 through the emptying pipe 7; the water pump A and the water pump B are respectively connected with a PLC control station; wherein n is a positive integer greater than 1;
the control method specifically comprises the following steps:
(1) when the flow is increased, the water level rises, the water pumps A are preferably started one by one, the total scale of the water pumps A is matched with the design scale, and at the moment, the intercepted mixed sewage is divided according to the design flow and is lifted to a municipal sewage pipe; if the water pump A is completely started, the water level continues to rise, the water pumps B are started one by one, the total scale of the water pumps B is matched with the design scale, and at the moment, the intercepted mixed sewage overflows according to the design flow and is lifted to a CSO regulation and storage tank; meanwhile, the water pump A still works;
(2) when the flow is reduced, the water level is reduced, the water pumps B are closed one by one, the water pumps with long operation time are closed preferentially until all the water pumps B are closed, if the water level continues to be reduced, the water pumps A are closed one by one, and the water pumps with long operation time are closed preferentially until all the water pumps A are closed;
(3) the PLC control station automatically uses the water pumps in turn according to the preset water pump running time, closes the water pumps with long running time and puts in standby water pumps to prevent standby equipment from being idle for a long time;
(4) the PLC control station is arranged on the site of the pump station to automatically control the water pump.
As shown in fig. 3, the water pumps lifted to the municipal sewage pipes are called water pumps a (n in total), the set operating water levels HA0, HA1, HA2, … … HAn-1, HAn, the water pumps lifted to the CSO storage tanks are called water pumps B (n in total), the set operating water levels HB0, HB1, HB2, HB3 … … HBn; the operation condition of the water pump is controlled by the water level, and the relationship between the water pump and the water pump is as follows:
as shown in fig. 4, a static pressure type liquid level transmitter 14 is arranged in the tank body of the first pump station group 3 to monitor the real-time liquid level in the tank body of the pump station in real time, and the static pressure type liquid level transmitter 14 is electrically connected with the PLC control station 10.
The tank body of the second pump station group 4 is internally provided with a static pressure type liquid level transmitter 14 for monitoring the real-time liquid level in the tank body of the pump station in real time, and the static pressure type liquid level transmitter 14 is electrically connected with the PLC control station 10.
The PLC control station 10 is connected with a touch screen 12, and the touch screen 12 monitors the PLC control station 10 and provides a human-computer interaction function;
the PLC control station 10 is connected with a central control room 11 through a 4G communication module 13, the central control room 11 dynamically displays real-time working conditions of all process flow sections and trend pictures of all process parameters through a high-resolution liquid crystal display, runs measurement and control software, downloads control parameters and stores historical data and alarm data.
The PLC control station 10 is respectively connected with the water pumps 15 in the first pump station group 3 and the first pump station group 4; meanwhile, the communication module in the PLC control station 10 is also connected to the electrical multifunctional parameter table 16 through the Modbus.
The automatic water level control system for the integrated drainage pump station group to accurately cut off water can be provided with a plurality of groups of pump station tanks.
(one) dry season condition
Description of operation of increasing flow in dry season
And after the intercepting mixed sewage is connected to the grid well, the intercepting mixed sewage enters the tank body of the first pump station group, and the tank body of the second pump station group does not enter water.
When the water level in the tank body of the first pump station group rises to HA1, 1 water pump A is randomly started, and at the moment, 1 water pump A works in the tank body of the first pump station group.
When the inflow rate continues to increase and the water level in the tank body of the first pump station group rises to HA2, the other water pump A is started at random, and at the moment, 2 water pumps A work in the tank body of the first pump station group.
…………
By analogy, when the water level in the tank body of the first pump station group rises to HAn-1, the other water pump A is started at random, and at the moment, n-1 water pumps A run in the tank body of the first pump station group.
When the water level in the tank body of the first pump station group rises to HAn, the other water pump A is started at random, and at the moment, n water pumps A run in the tank body of the first pump station group.
Description of reduced flow operation in dry season
When the water level in the tank body of the first pump station group is reduced to HAn-1, randomly turning off 1 water pump A (preferentially turning off the water pump with long operation time), and at the moment, n-1 sewage pumps in the tank body of the first pump station group operate;
…………
when the water level in the tank body of the first pump station group is lowered to HA2, other 1 water pump A (the water pump with long operation time is preferentially closed) is randomly closed, and at the moment, 2 water pumps A in the tank body of the first pump station group operate;
when the water level in the tank body of the first pump station group is lowered to HA1, other 1 water pump A (the water pump with long operation time is preferentially closed) is randomly closed, and at the moment, 1 water pump A in the tank body of the first pump station group operates;
when the water level in the tank body of the first pump station group is lowered to HA1, other 1 water pump A (the water pump with long operation time is preferentially closed) is randomly closed, and at the moment, 1 water pump A in the tank body of the first pump station group operates;
when the water level in the tanks of the first pump station group drops to HA0, the other 1 water pumps a are randomly turned off, and all the water pumps a in the tanks of the first pump station group are turned off at this time.
(II) rainy season conditions
Description of operation of increasing rainfall in rainy season
And after the intercepting mixed sewage is connected to the grid well, the intercepting mixed sewage preferentially enters the tank body of the first pump station group.
When the water level in the tank body of the first pump station group rises to HA1, 1 water pump A is randomly started, and at the moment, 1 water pump A works in the tank body of the first pump station group.
When the inflow rate continues to increase and the water level in the tank body of the first pump station group rises to HA2, the other water pump A is started at random, and at the moment, 2 water pumps A work in the tank body of the first pump station group.
…………
By analogy, when the water level in the tank body of the first pump station group rises to HAn-1, the other water pump A is started at random, and at the moment, n-1 water pumps A run in the tank body of the first pump station group.
When the water level in the tank body of the first pump station group rises to HAn, the other water pump A is started at random, and at the moment, n water pumps A run in the tank body of the first pump station group.
And when the flow rate continues to increase, the intercepted mixed sewage overflows to the tank body of the second pump station group of the pump station.
When the water level in the tank body of the second pump station group of the pump station rises to HB1, 1 water pump B is randomly started, and at the moment, 1 water pump B works in the tank body of the second pump station group of the pump station.
When the inflow water flow continues to increase and the water level in the tank body of the second pump station group of the pump station rises to HA2, the other water pump B is started randomly, and at the moment, 2 water pumps B work in the tank body of the second pump station group of the pump station.
…………
By parity of reasoning, when the water level in the tank body of the second pump station group of the pump station rises to HBn-1, the other water pump B is started randomly, and at the moment, n-1 water pumps B operate in the tank body of the second pump station group of the pump station.
When the water level in the sewage lifting tank body rises to HBn, the other water pump B is started at random, and at the moment, n water pumps B operate in the tank body of the second pump station group of the pump station.
Description of operation of rainfall reduction in rainy season
When the water level in the tank body of the second pump station group of the pump station is lowered to HBn-1, randomly closing 1 water pump B (preferentially closing a water pump with long operation time), and at the moment, operating n-1 sewage pumps in the tank body of the second pump station group of the pump station;
…………
when the water level in the tank body of the second pump station group of the pump station is reduced to HB2, other 1 water pump B (the water pump with long operation time is preferably closed) is randomly closed, and at the moment, 2 water pumps B operate in the tank body of the second pump station group of the pump station;
when the water level in the tank body of the second pump station group of the pump station is reduced to HB1, other 1 water pump B (the water pump with long operation time is preferably closed) is randomly closed, and at the moment, 1 water pump B operates in the tank body of the second pump station group of the pump station;
when the water level in the tank body of the second pump station group of the pump station is reduced to HB1, other 1 water pump B (the water pump with long operation time is preferably closed) is randomly closed, and at the moment, 1 water pump B operates in the tank body of the second pump station group of the pump station;
when the water level in the tank body of the second pump station group of the pump station is lowered to HB0, randomly closing the other 1 water pump B, and closing all the water pumps B in the tank body of the second pump station group of the pump station;
when the water level in the tank body of the first pump station group is reduced to HAn-1, randomly turning off 1 water pump A (preferentially turning off the water pump with long operation time), and at the moment, n-1 sewage pumps in the tank body of the first pump station group operate;
…………
when the water level in the tank body of the first pump station group is lowered to HA2, other 1 water pump A (the water pump with long operation time is preferentially closed) is randomly closed, and at the moment, 2 water pumps A in the tank body of the first pump station group operate;
when the water level in the tank body of the first pump station group is lowered to HA1, other 1 water pump A (the water pump with long operation time is preferentially closed) is randomly closed, and at the moment, 1 water pump A in the tank body of the first pump station group operates;
when the water level in the tank body of the first pump station group is lowered to HA1, other 1 water pump A (the water pump with long operation time is preferentially closed) is randomly closed, and at the moment, 1 water pump A in the tank body of the first pump station group operates;
when the water level in the tanks of the first pump station group drops to HA0, the other 1 water pumps a are randomly turned off, and all the water pumps a in the tanks of the first pump station group are turned off at this time.
The above description is only an example embodiment of the present invention, and it should be noted that, for those skilled in the art, many modifications and variations can be made without departing from the principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.
Claims (4)
1. The automatic water level control method for accurate interception of the integrated drainage pump station group is characterized by comprising the following steps of: adopt the accurate water level automatic control system who dams of integration drain pump station group to regulate and control, the accurate water level automatic control system who dams of integration drain pump station group includes but is not limited to: the system comprises an intercepting well, a first pump station group, a second pump station group, a grid well, a CSO (common control station), a PLC (programmable logic controller) control station and a sewage treatment plant; wherein, the tank body of the first pump station group is internally provided with n water pumps lifted to the municipal sewage pipe, which are called as water pumps A, and the tank body of the second pump station group is internally provided with n water pumps lifted to the CSO regulation pool, which are called as water pumps B; the intercepting well is connected with the grid well through an intercepting pipe, the grid well is respectively connected with a water pump A and a water pump B, the water pump A is connected with a sewage treatment plant through a municipal sewage pipe, the water pump B is connected with a CSO regulation pool, and the CSO regulation pool is provided with an emptying pipe and is connected to a municipal sewage pipe through the emptying pipe; the water pump A and the water pump B are respectively connected with a PLC control station; wherein n is a positive integer greater than 1;
the control method specifically comprises the following steps:
(1) when the flow is increased, the water level rises, the water pumps A are preferably started one by one, the total scale of the water pumps A is matched with the design scale, and at the moment, the intercepted mixed sewage is divided according to the design flow and is lifted to a municipal sewage pipe; if the water pump A is completely started, the water level continues to rise, the water pumps B are started one by one, the total scale of the water pumps B is matched with the design scale, and at the moment, the intercepted mixed sewage overflows according to the design flow and is lifted to a CSO regulation and storage tank; meanwhile, the water pump A still works;
(2) when the flow is reduced, the water level is reduced, the water pumps B are closed one by one, the water pumps with long operation time are closed preferentially until all the water pumps B are closed, if the water level continues to be reduced, the water pumps A are closed one by one, and the water pumps with long operation time are closed preferentially until all the water pumps A are closed;
(3) the PLC control station automatically uses the water pumps in turn according to the preset water pump running time, closes the water pumps with long running time and puts in standby water pumps to prevent standby equipment from being idle for a long time;
(4) the PLC control station is arranged on the site of the pump station to automatically control the water pump.
2. The method of automatically controlling a water level for accurate shut-off of an integrated sump pump station set of claim 1, further comprising: the tank body of the first pump station group is internally provided with a static pressure type liquid level transmitter for monitoring the real-time liquid level in the tank body of the pump station in real time, and the static pressure type liquid level transmitter is electrically connected with the PLC control station.
3. The method of automatically controlling a water level for accurate shut-off of an integrated sump pump station set of claim 1, further comprising: and a static pressure type liquid level transmitter is arranged in the tank body of the second pump station group and used for monitoring the real-time liquid level in the tank body of the pump station in real time, and the static pressure type liquid level transmitter is electrically connected with the PLC control station.
4. The method of automatically controlling a water level for accurate shut-off of an integrated sump pump station set of claim 1, further comprising: the PLC control station is connected with the touch screen, and the touch screen monitors the PLC control station and provides a human-computer interaction function;
the method of automatically controlling a water level for accurate shut-off of an integrated sump pump station set of claim 1, further comprising: the PLC control station is connected with a central control room through a 4G communication module, the central control room dynamically displays real-time working conditions of all process flow sections and trend pictures of all process parameters through a high-resolution liquid crystal display, runs measurement and control software, downloads control parameters and stores historical data and alarm data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011006137.XA CN112096591A (en) | 2020-09-23 | 2020-09-23 | Automatic water level control method for accurate interception of integrated drainage pump station group |
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