CN103628560A - Flow cutoff control device with memory function and flow cutoff control method thereof - Google Patents

Flow cutoff control device with memory function and flow cutoff control method thereof Download PDF

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Publication number
CN103628560A
CN103628560A CN201310631514.2A CN201310631514A CN103628560A CN 103628560 A CN103628560 A CN 103628560A CN 201310631514 A CN201310631514 A CN 201310631514A CN 103628560 A CN103628560 A CN 103628560A
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plc
signal
water
water quality
damming
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CN103628560B (en
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高俊敏
姜文超
吕念南
樊晓晨
黄世彪
张连强
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Chongqing University
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Chongqing University
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Abstract

The invention relates to a flow cutoff control device with a memory function and a flow cutoff control method thereof. The flow cutoff control device is used for carrying out automatic precise control based on a PLC (Programmable Logic Controller) system and consists of an intelligent control box, a driving device, an electric gate and a water level gauge, wherein an input terminal of the intelligent control box is connected with the water level gauge, an output terminal of the intelligent control box is connected with the driving device, the driving device is connected with the electric gate so as to drive the opening/closing of the electric gate, and the water level gauge, a flowmeter and an online water quality detector can be used separately or in a cooperated manner and are mounted according to specific regional implementation circumstances. When a signal is detected by the water level gauge, the signal is fed back to the intelligent control box, a command signal is sent out after the signal is subjected to conversion, analysis and calculation in the intelligent control box, the run/stop of the driving device is automatically controlled by the PLC system of the intelligent control box according to the feedback signal, and then, the electric gate is driven to open/close by the driving device, so that the size of cutoff flow can be controlled accurately, thus, the pollution to environment is reduced, and rainwater, which reaches use standards after flow cutoff, can be subjected to resource utilization.

Description

A kind of dam control device and control method with memory function
Technical field
The invention belongs to urban drainage system, environmental protection technical field, be specifically related to a kind of based on PLC system and there is the control device that dams of memory function.
Background technology
Along with the development of urbanization, the precontamination problem that town rain runoff causes becomes increasingly conspicuous.At present, for cities and towns initial rainfall runoff, be all generally by building catchpit and intercepting sewer is dammed into sewage conduct, and be transported to Wastewater Treatment Plant and process.Therefore, catchpit is the key facility that initial rainfall runoff pollution is controlled.In practice, existing catchpit is to the control of primary rainwater closure amount or adopt overflow weir to control by water level, adopt the mechanical devices such as float valve to carry out semi-natural control, all can not realize the amount of damming of initial rainfall runoff is accurately controlled, particularly can not accurately control according to the degree of contamination of initial rainfall runoff, this not only may cause intercepting sewer and soil pipe caliber to increase and sewage load increases, thereby cause unnecessary economic input, and may cause initial rainfall runoff pollution to be effectively controlled.
Summary of the invention
In order to make catchpit realize the initial rainfall runoff amount of damming, accurately control, particularly can realize according to initial rainfall runoff pollution degree (as concentration of suspension etc.) and accurately controlling, the present invention proposes a kind of based on PLC system and there is the control mode of damming of memory function.
The technical solution adopted in the present invention is:
The control device that dams with memory function, is comprised of intelligent control box, drive unit, motor operated valve, water-level gauge, flow meter and/or online water quality testing meter.Described water-level gauge is arranged on peak level line position in catchpit, detects the water level signal in catchpit; Described shutoff valve is arranged in the interior intercepting sewer of catchpit, closes or open intercepting sewer; Described flow meter and/or online water quality testing meter are arranged on the waterline that sets in advance with upper/lower positions.Described intelligent control box adopts PLC system, and its input connects the signal output part of water-level gauge (or online water quality testing meter), and its output is connected with drive unit, and drive unit is connected with shutoff valve, to drive the keying of motor operated valve.When signal feedback is to intelligent control box, when water-level gauge flow meter and/or online water quality testing meter detect signal, in intelligent control box, by PLC system, undertaken sending command signal after the calculating of signal transformation assay, the operation of accessory drive with stop, and then pass through the keying of drive unit driving electric valve, thereby can accurately control the size of the amount of damming.
The present invention further provides the method that adopts the above control device that dams with memory function to dam and control, comprise the following steps:
(1) by water-level gauge, flow meter or/and online water quality testing meter water level in catchpit, flow detected or/and water quality signal, the PLC system by signal feedback to intelligent control box;
(2) by PLC system, carry out signal processing, process is as follows:
A, when water level arrives the predefined waterline of system or flow and reaches the predefined flow of system, the time t that PLC system is self registering while reaching 1, with last time rainfall record meet for the last time that the predefined waterline of system requires or time t during default traffic requirement 2contrast, calculate arid number of days t d, i.e. t d=t 1-t 2, and with the predefined arid number of days T of PLC system d establishescontrast.
If B1 is the arid number of days t that this time system-computed goes out dbe less than predefined arid number of days T d establishesbe t d< T d if, or online water quality testing meter detected value S surveydo not reach system water quality setting value S ifbe S survey< S if, PLC system is sent command signal, and accessory drive is realized the shutoff valve of catchpit and is closed.
If B2 calculates arid number of days t dreach the arid number of days T of setting d establishesbe t d>=T d establishestime, or online water quality testing meter detects water quality S surveyreach system water quality settings S ifbe S survey>=S iftime, PLC system accessory drive is realized the shutoff valve of catchpit and is opened.
B21, along with rainwater is by the continuous discharge of intercepting sewer, the water quality value detection signal S that PLC system constantly produces online water quality testing meter surveywith predefined system water quality setting value S ifcontrast, as water quality value detected value S surveyjust be reduced to default value S ifbe below S survey< S iftime, PLC system is sent command signal, and accessory drive is realized the shutoff valve of catchpit and is closed.
Or, B22, along with rainwater is by the continuous discharge of intercepting sewer, when PLC system is judged the time t that dams ior the amount of damming Q ireach the predefined time T of damming i establishesor the amount of damming Q i establishesbe t i>=T i establishesor Q i>=Q i establishestime, PLC system is sent the shutoff valve that instruction accessory drive carries out catchpit and is closed.
Or, if rainfall runoff time or the flow of whole rainfall of B23 are less than predefined time or the amount of damming of damming of system, before also reaching predefined dam time or the amount of damming, PLC system just not can't detect rainwater signal or flow signal, PLC system is sent instruction by the signal feeding back by water-level gauge, and accessory drive is realized the shutoff valve of catchpit and closed.
If when C water-level gauge detects the peak level height that in catchpit, water level arrival is set, PLC system is sent instruction, by drive unit, open shutoff valve to maximum or send distant early warning signal.
Adopt the inventive method, for the catchpit in traditional separated drainage system, also between the rainwater water inlet pipe in well and the storm drain road of overflow or jump, be provided with overflow weir control valve, PLC system, when shutoff valve cuts out, controlling water kick weir control valve to open; When water level reaches peak level height, PLC system will control shutoff valve and overflow weir control valve is opened simultaneously.
Rain sewage two-layer compound manhole for " rainwater, sewage two-layer compound manhole " in (ZL200910104453.8), the unlatching size of cutoff hole maybe needs the water quality of damming to arrange according to the concrete amount of damming.When water level surpasses manhole maximum stage, intelligent control box can be sent distant early warning signal.When can't detect rainwater signal (or flow signal), the instruction that motor operated valve can send according to intelligent control box is transformed into predetermined state.
The advantage that this control device that dams is compared with the existing control mode of damming with method is: can with particular locality initial rainfall runoff over time feature be associated, according to the degree of contamination of initial rainfall runoff, realize the accurate control to the amount of damming, the realization amount of damming and the organic unity of polluting control, thus realize the economic and practical of initial rainfall runoff pollution control and the best combination of environment friendly.
Accompanying drawing explanation
Fig. 1 is that the present invention is for the structural representation of the jump well (catchpit) of existing traditional separate flow system initial rainfall footpath current control.
Fig. 2 is the present invention for " rainwater, sewage two-layer compound manhole " (ZL200910104453.8) structural representation of two-layer compound manhole (parallel mono-layer tube).
Fig. 3 is the present invention for " rainwater, sewage two-layer compound manhole " (ZL200910104453.8) structural representation of two-layer compound manhole (bimetallic tube).
Fig. 4 is the present invention for " rainwater, sewage two-layer compound manhole " (ZL200910104453.8) structural representation of two-layer compound manhole (intersecting mono-layer tube).
Fig. 5 is device workflow schematic diagram of the present invention.
In figure, 1 is well lid, and 2 is catchpit, and 3 is water-level gauge or flow meter, 4 is online water quality monitor, and 5 is intelligent control box (adopting PLC system), and 6 is drive unit, 71 is shutoff valve, and 72 is overflow weir control valve, and 8 is upstream rain pipe, 9 is downstream rain pipe, 10 is intercepting sewer, and 11 is upstream soil pipe, and 12 is downstream soil pipe, 13 is intercepter plate, and 14 is cutoff hole.
The specific embodiment
Embodiment mono-:
Originally dam control device for the form of the jump well (catchpit) of existing traditional separate flow system initial rainfall footpath current control with reference to Fig. 1 and Fig. 5, control device is comprised of water-level gauge or flow meter 3, online water quality testing meter 4, intelligent control box 5, drive unit 6 and shutoff valve 71 and overflow weir control valve 72, wherein water-level gauge or flow meter 3, line water quality testing meter 4 are arranged in catchpit 2, and intelligent control box 5 and drive unit 6 are arranged on well lid 1.
Water-level gauge or flow meter 3 and line water quality testing meter 4 can be used separately or be used in conjunction with, and according to concrete regional performance, install.Workflow is: water-level gauge or flow meter 3, online water quality testing meter 4 are transferred to intelligent control box 5 after signal being detected, numerical value by intelligent control box 5 inner analysis computings and setting contrasts and automatically records this numerical value, the automatic open and close of realizing shutoff valve 7 by PLC system accessory drive 6, reaches the object of the accurate control amount of damming with this.
Concrete control method is as follows:
In rainfall, increase with rate of water added, when water level arrives predefined waterline a or flow and reaches default flow (designated water level or flow as required), water-level gauge (or flow meter) 3 produces water level signal or flow signal, be transferred to intelligent control box 5, t of self registering this time of intelligent control box 1with last time rainfall record meet for the last time that designated water level line a requires or time t during default traffic requirement 2compare analysis, automatically calculate arid number of days t d(be t d=t 1-t 2), and with intelligent control box in predefined arid number of days contrast, if analysis meter is calculated arid number of days t d(as 2 days) are less than predefined arid number of days T d establishes(as 3 days) are t d< T d establishesor online water quality testing meter detected value S surveydo not reach system water quality setting value S ifbe S survey< S if(system water quality settings can arrange according to concrete regional environmental requirement standard), PLC system by intelligent control box 5 is sent command signal, and by PLC system automatically controlled actuating device 6, realize a section dirty pipe shutoff valve 71 and close, overflow weir control valve 72 is opened, and rainwater directly flows out by downstream storm sewer 9; When analysis meter is calculated arid number of days t d(as 4 days) reach the arid number of days T of setting d establishes(as 3 days) are t d>=T d establishesor online water quality testing meter detects water quality S surveyreach system water quality settings S ifbe S survey>=S iftime, by the PLC system automatically controlled actuating device 6 of intelligent control box 5, realizing shutoff valve 71 opens, overflow weir control valve 72 is closed, rainwater discharges by intercepting sewer 10, simultaneously online water quality testing meter 4(is as SS water quality testing meter) detect online Rainwater Quality, because rainwater has scouring effect, along with rainwater is by the continuous discharge of intercepting sewer, Rainwater Quality improves gradually, as water quality value S surveyjust be reduced to system settings S if(as according to one-level B standard configuration water quality value) is following is S survey< S iftime, online water quality testing meter 4 produces water quality signal, and input intelligent control box 5 is carried out transformation assay and is calculated S survey, and with predefined system water quality settings S ifbe analyzed, send command signal, realize shutoff valve 71 close by PLC system automatically controlled actuating device 6, overflow weir control valve 72 is opened, and residue rainwater flows out by downstream storm sewer 9; Or when analysis meter is calculated arid number of days t d(as 4 days) reach the arid number of days T of setting d establishes(as 3 days) are t d>=T d establishestime, by water-level gauge 3(or flow meter 3) water yield detected and flow into start, transmit a signal to intelligent control box 5, by intelligent control box 5, carry out transformation assay signal, send command signal, realize shutoff valve 71 open by PLC system automatically controlled actuating device 6, overflow weir control valve 72 is closed, rainwater discharges by intercepting sewer 10, as the time t that dams ior the amount of damming Q ireach respectively the predefined time T of damming i ifor the amount of damming Q i establishesbe t i>=T i establishesor Q i>=Q i establishestime, intelligent control box 5 is sent instruction and is closed by PLC system automatically controlled actuating device 6 realization section dirty valves 71, and overflow weir control valve 72 is opened, and residue rainwater is by 9 outflows of downstream storm sewer.If rainfall runoff time or the flow of whole rainfall are less than predefined time or the amount of damming of damming of system, before also reaching predefined dam time or the amount of damming, PLC system just not can't detect rainwater signal or flow signal, the signal that intelligent control box 5 is fed back by water-level gauge 3 sends instruction and by PLC system automatically controlled actuating device 6, realizes shutoff valve 71 and close, and overflow weir control valve 72 is opened.
When if in catchpit, water level arrives maximum water level b, the water level signal of feeding back by the water-level gauge 3 of receiving in intelligent control box 5 is sent instruction automatically, by drive unit 6, automatically opened two valves or sent distant early warning signal, staff carries out scene investigation.
Embodiment bis-:
Originally dam control device for " rainwater, the sewage two-layer compound manhole " of parallel individual layer tubular type (ZL200910104453.8) structure of two-layer compound manhole with reference to Fig. 2 and Fig. 5, by water-level gauge 3(or flow meter), online water quality testing meter 4, intelligent control box 5, drive unit 6 and shutoff valve 71 form, wherein water-level gauge 3(or flow meter) and online water quality testing meter 4 can use separately or be used in conjunction with, according to concrete regional performance, install.Its workflow is with embodiment one.
In rainfall, increase with rate of water added, when water level arrival presets waterline a or default flow (designated water level or flow as required), water-level gauge (or flow meter) 3 produces water level signal or flow signal, be transferred to intelligent control box 5, t of self registering this time of intelligent control box 1the last satisfied time t that presets waterline a requirement or default traffic requirement with rainfall last time record 2compare analysis, automatically calculate arid number of days t d(be t d=t 1-t 2), and with intelligent control box in predefined arid number of days contrast, if analysis meter is calculated arid number of days t d(as 2 days) are less than predefined arid number of days T d establishes(as 3 days) are t d< T d establishesor online water quality testing meter detected value S surveydo not reach system water quality setting value S ifbe S survey< S if(system water quality settings can arrange according to concrete regional environmental requirement standard), by sending command signal in intelligent control box 5, and by PLC system automatically controlled actuating device 6, realize shutoff valve 71 and close, rainwater directly flows out by manhole downstream, upper strata storm sewer 9; When analysis meter is calculated arid number of days t d(as 4 days) reach the arid number of days T of setting d establishes(as 3 days) are t d>=T d establishesor online water quality testing meter detects water quality S surveyreach system water quality settings S ifbe S survey>=S iftime, by the PLC system automatically controlled actuating device 6 of intelligent control box 5, realizing shutoff valve 71 opens, unlatching size cuts uninterrupted as required or Rainwater Quality is controlled, the rainwater that need dam enters lower floor's manhole by the cutoff hole 14 arranging on intercepter plate 13 and discharges by downstream soil pipe 12, simultaneously online water quality testing meter 4(is as SS water quality testing meter) detect online Rainwater Quality, because rainwater has scouring effect, along with rainwater is by the continuous discharge of intercepting sewer, Rainwater Quality improves gradually, as water quality value S surveyjust be reduced to system settings S if(as according to one-level B standard configuration water quality value) is following is S survey< S iftime, online water quality testing meter 4 produces water quality signal, and input intelligent control box 5 is carried out transformation assay and is calculated S survey, and with predefined system water quality settings S ifbe analyzed, send command signal, realize shutoff valve 71 close by PLC system automatically controlled actuating device 6, residue rainwater flows out by manhole downstream, upper strata storm sewer 9; Or when analysis meter is calculated arid number of days t d(as 4 days) reach the arid number of days T of setting d establishes(as 3 days) are t d>=T d establishestime, by water-level gauge (or flow meter) 3, the water yield detected and flow into beginning, transmit a signal to intelligent control box 5, by intelligent control box 5, carry out transformation assay signal, send command signal, by PLC system automatically controlled actuating device 6, realize shutoff valve 71 and open, rainwater enters lower floor's manhole by cutoff hole 14 and discharges by downstream soil pipe 12, as the time t that dams ior the amount of damming Q ireach respectively the predefined time T of damming i establishesor the amount of damming Q i establishesbe t i>=T i establishesor Q i>=Q i iftime, intelligent control box 5 is sent instruction and by PLC system automatically controlled actuating device 6, is realized shutoff valve 71 and close, and residue rainwater flows out by the downstream storm sewer 9 of upper strata manhole.If rainfall runoff time or the flow of whole rainfall are less than predefined time or the amount of damming of damming of system, before also reaching predefined dam time or the amount of damming, PLC system just not can't detect rainwater signal or flow signal, and the signal that intelligent control box 5 is fed back by water-level gauge 3 sends instruction and by PLC system automatically controlled actuating device 6, realizes shutoff valve 71 and close.
When if in catchpit, water level arrives maximum water level b, the water level signal of feeding back by the water-level gauge 3 of receiving in intelligent control box 5 is sent instruction automatically, by drive unit 6, automatically opened shutoff valve 71 to maximum or sent distant early warning signal, staff carries out scene investigation.
Embodiment tri-:
Originally dam control device for " rainwater, the sewage two-layer compound manhole " of double-tube type (ZL200910104453.8) structure ginseng Fig. 3 and Fig. 5 of two-layer compound manhole, by water-level gauge 3(or flow meter), online water quality testing meter 4, intelligent control box 5, drive unit 6 and shutoff valve 71 form, wherein water-level gauge 3(or flow meter) and online water quality testing meter 4 can use separately or be used in conjunction with, according to concrete regional performance, install.Its workflow is with embodiment one.
In rainfall, increase with rate of water added, when water level arrives predefined waterline a or default flow (designated water level or flow as required), water-level gauge (or flow meter) 3 produces water level signal or flow signal, be transferred to intelligent control box 5, t of self registering this time of intelligent control box 1time t with the predefined waterline a requirement of meeting for the last time of rainfall last time record or default traffic requirement 2compare analysis, automatically calculate arid number of days t d(be t d=t 1-t 2), and with intelligent control box in predefined arid number of days T d establishescontrast, if analysis meter is calculated arid number of days t d(as 2 days) are less than predefined arid number of days T d establishes(as 3 days) are t d< T d establishesor online water quality testing meter detected value S surveydo not reach system water quality setting value S ifbe S survey< S if(system water quality settings can arrange according to concrete regional environmental requirement standard), by sending command signal in intelligent control box 5, and by PLC system automatically controlled actuating device 6, realize shutoff valve 71 and close, rainwater directly flows out by double-skin duct upper strata, manhole downstream, upper strata storm sewer 9; When analysis meter is calculated arid number of days t d(as 4 days) reach the arid number of days T of setting d establishes(as 3 days) are t d>=T d establishesor online water quality testing meter detects water quality S surveyreach system water quality settings S ifbe S survey>=S iftime, by the PLC system automatically controlled actuating device 6 of intelligent control box 5, realizing shutoff valve 71 opens, unlatching size cuts uninterrupted as required or Rainwater Quality is controlled, the rainwater that need dam enters lower floor's manhole by the cutoff hole 14 arranging on intercepter plate 13 and discharges by downstream double-skin duct lower floor soil pipe 12, simultaneously online water quality testing meter 4(is as SS water quality testing meter) detect online Rainwater Quality, because rainwater has scouring effect, along with rainwater is by the continuous discharge of intercepting sewer, Rainwater Quality improves gradually, as water quality value S surveyjust be reduced to system settings S if(as according to one-level B standard configuration water quality value) is following is S survey< S iftime, online water quality testing meter 4 produces water quality signal, and input intelligent control box 5 is carried out transformation assay and is calculated S survey, and with predefined system water quality settings S ifbe analyzed, send command signal, realize shutoff valve 71 close by PLC system automatically controlled actuating device 6, residue rainwater flows out by double-skin duct upper strata, manhole downstream, upper strata storm sewer 9; Or when analysis meter is calculated arid number of days t d(as 4 days) reach the arid number of days T of setting d establishes(as 3 days) are t d>=T d establishestime, by water-level gauge 3(or flow meter 3) water yield detected and flow into start, transmit a signal to intelligent control box 5, by intelligent control box 5, carry out transformation assay signal, send command signal, by PLC system automatically controlled actuating device 6, realize shutoff valve 71 and open, rainwater enters lower floor's manhole by cutoff hole 14 and discharges by downstream double-skin duct lower floor soil pipe 12, as the time t that dams ior the amount of damming Q ireach respectively the predefined time T of damming i establishesor the amount of damming Q i establishesbe t i>=T i establishesor Q i>=Q i establishestime, intelligent control box 5 is sent instruction and by PLC system automatically controlled actuating device 6, is realized shutoff valve 71 and close, and residue rainwater flows out by double-skin duct upper strata, the downstream storm sewer 9 of upper strata manhole.If rainfall runoff time or the flow of whole rainfall are less than predefined time or the amount of damming of damming of system, before also reaching predefined dam time or the amount of damming, PLC system just not can't detect rainwater signal or flow signal, and the signal that intelligent control box 5 is fed back by water-level gauge 3 sends instruction and by PLC system automatically controlled actuating device 6, realizes shutoff valve 71 and close.
When if in catchpit, water level arrives maximum water level b, the water level signal of feeding back by the water-level gauge 3 of receiving in intelligent control box 5 is sent instruction automatically, by drive unit 6, automatically opened shutoff valve 71 to maximum or sent distant early warning signal, staff carries out scene investigation.
Embodiment tetra-:
Originally dam control device for " rainwater, the sewage two-layer compound manhole " that intersect individual layer tubular type (ZL200910104453.8) structure of two-layer compound manhole referring to Fig. 4 and Fig. 5, by water-level gauge 3(or flow meter), online water quality testing meter 4, intelligent control box 5, drive unit 6 and shutoff valve 71 form, wherein water-level gauge 3(or flow meter) and online water quality testing meter 4 can use separately or be used in conjunction with, according to concrete regional performance, install.Its workflow is with embodiment one.
In rainfall, increase with rate of water added, when water level arrives predefined waterline a or default flow (designated water level or flow as required), water-level gauge (or flow meter) 3 produces water level signal or flow signal, be transferred to intelligent control box 5, t of self registering this time of intelligent control box 1time t with the predefined waterline a requirement of meeting for the last time of rainfall last time record or default traffic requirement 2compare analysis, automatically calculate arid number of days t d(be t d=t 1-t 2), and with intelligent control box in predefined arid number of days T d establishescontrast, if analysis meter is calculated arid number of days t d(as 2 days) are less than predefined arid number of days T d establishes(as 3 days) are t d< T d establishesor online water quality testing meter detected value S surveydo not reach system water quality setting value S ifbe S survey< S if(system water quality settings can arrange according to concrete regional environmental requirement standard), by sending command signal in intelligent control box 5, and by PLC system automatically controlled actuating device 6, realize shutoff valve 71 and close, rainwater directly flows out by manhole downstream, upper strata storm sewer 9; When analysis meter is calculated arid number of days t d(as 4 days) reach the arid number of days T of setting d establishes(as 3 days) are t d>=T d establishesor online water quality testing meter detects water quality S surveyreach system water quality settings S ifbe S survey>=S iftime, by the PLC system automatically controlled actuating device 6 of intelligent control box 5, realizing shutoff valve 71 opens, unlatching size cuts uninterrupted as required or Rainwater Quality is controlled, the rainwater that need dam enters lower floor's manhole by the cutoff hole 14 arranging on intercepter plate 13 and discharges by downstream soil pipe 12, simultaneously online water quality testing meter 4(is as SS water quality testing meter) detect online Rainwater Quality, because rainwater has scouring effect, along with rainwater is by the continuous discharge of intercepting sewer, Rainwater Quality improves gradually, as water quality value S surveyjust be reduced to system settings S if(as according to one-level B standard configuration water quality value) is following is S survey< S iftime, online water quality testing meter 4 produces water quality signal, and input intelligent control box 5 is carried out transformation assay and is calculated S survey, and with predefined system water quality settings S ifbe analyzed, send command signal, realize shutoff valve 71 close by PLC system automatically controlled actuating device 6, residue rainwater flows out by manhole downstream, upper strata storm sewer 9; Or when analysis meter is calculated arid number of days t d(as 4 days) reach the arid number of days T of setting d establishes(as 3 days) are t d>=T d establishestime, by water-level gauge 3(or flow meter 3) water yield detected and flow into start, transmit a signal to intelligent control box 5, by intelligent control box 5, carry out transformation assay signal, send command signal, by PLC system automatically controlled actuating device 6, realize shutoff valve 71 and open, rainwater enters lower floor's manhole by cutoff hole 14 and discharges by downstream soil pipe 12, as the time t that dams ior the amount of damming Q ireach respectively the predefined time T of damming i establishesor the amount of damming Q i establishesbe t i>=T i establishesor Q i>=Q i establishestime, intelligent control box 5 is sent instruction and by PLC system automatically controlled actuating device 6, is realized shutoff valve 71 and close, and residue rainwater flows out by the downstream storm sewer 9 of upper strata manhole.If rainfall runoff time or the flow of whole rainfall are less than predefined time or the amount of damming of damming of system, before also reaching predefined dam time or the amount of damming, PLC system just not can't detect rainwater signal or flow signal, and the signal that intelligent control box 5 is fed back by water-level gauge 3 sends instruction and by PLC system automatically controlled actuating device 6, realizes shutoff valve 71 and close.
When if in catchpit, water level arrives maximum water level b, the water level signal of feeding back by the water-level gauge 3 of receiving in intelligent control box 5 is sent instruction automatically, by drive unit 6, automatically opened shutoff valve 71 to maximum or sent distant early warning signal, staff carries out scene investigation.

Claims (8)

1. the control device that dams with memory function, is characterized in that: it comprises intelligent control box, drive unit, shutoff valve, water-level gauge, and described water-level gauge is arranged on peak level line position in catchpit, detects the water level signal in catchpit; Described shutoff valve is arranged in the interior intercepting sewer of catchpit, closes or open intercepting sewer; Described intelligent control box adopts PLC system, and its input connects the signal output part of water-level gauge, and its output is connected with drive unit, and drive unit is connected with shutoff valve, to drive the keying of shutoff valve; During water level signal in water-level gauge detects catchpit, PLC system by signal feedback to intelligent control box, after carrying out signal conversion and calculate in PLC system, send command signal, the operation of automatically controlled actuating device with stop, and then by drive unit, drive the keying of shutoff valve, thereby accurately control the size of the amount of damming.
2. the control device that dams with memory function according to claim 1, it is characterized in that: in described catchpit, be also provided with flow meter and/or online water quality testing meter, they are arranged on the waterline that sets in advance with upper/lower positions, and their signal end is all connected with the input of intelligent control box.
3. the control device that dams with memory function according to claim 2, it is characterized in that: for catchpit or the jump well of traditional separated drainage system, also between the rainwater water inlet pipe in well and the storm drain road of overflow or jump, be provided with overflow weir control valve, it is also connected with drive unit, by PLC system, is controlled.
4. the method that the control device that dams with memory function described in employing claim 1,2 or 3 dams and controls, is characterized in that comprising the following steps:
(1) by water-level gauge, flow meter or/and online water quality testing meter water level in catchpit, flow detected or/and water quality signal, the PLC system by signal feedback to intelligent control box;
(2) by PLC system, carry out signal processing, process is as follows:
A, when water level arrives the predefined waterline of system or flow and reaches the predefined flow of system, the time t that PLC system is self registering while reaching 1, with last time rainfall record meet for the last time that the predefined waterline of system requires or time t during default traffic requirement 2contrast, calculate arid number of days t d, i.e. t d=t 1-t 2, and with the predefined arid number of days T of PLC system d establishescontrast;
If B1 is the arid number of days t that this time system-computed goes out dbe less than predefined arid number of days T d establishesbe t d< T d if, or online water quality testing meter detected value S surveydo not reach system water quality setting value S ifbe S survey< S if, PLC system is sent command signal, and accessory drive is realized the shutoff valve of catchpit and is closed;
If B2 calculates arid number of days t dreach the arid number of days T of setting d establishesbe t d>=T d establishestime, or online water quality testing meter detects water quality S surveyreach system water quality settings S ifbe S survey>=S iftime, PLC system accessory drive is realized the shutoff valve of catchpit and is opened;
B21, along with rainwater is by the continuous discharge of intercepting sewer, the water quality value detection signal S that PLC system constantly produces online water quality testing meter surveywith predefined system water quality setting value S ifcontrast, as water quality value detected value S surveyjust be reduced to default value S ifbe below S survey< S iftime, PLC system is sent command signal, and accessory drive is realized the shutoff valve of catchpit and is closed;
Or, B22, along with rainwater is by the continuous discharge of intercepting sewer, when PLC system is judged the time t that dams ior the amount of damming Q ireach the predefined time T of damming i establishesor the amount of damming Q i establishesbe t i>=T i establishesor Q i>=Q i establishestime, PLC system is sent the shutoff valve that instruction accessory drive carries out catchpit and is closed;
Or, if rainfall runoff time or the flow of whole rainfall of B23 are less than predefined time or the amount of damming of damming of system, before also reaching predefined dam time or the amount of damming, PLC system just not can't detect rainwater signal or flow signal, PLC system is sent instruction by the signal feeding back by water-level gauge, and accessory drive is realized the shutoff valve of catchpit and closed;
If when C water-level gauge detects the peak level height that in catchpit, water level arrival is set, PLC system is sent instruction, by drive unit, open shutoff valve to maximum or send distant early warning signal.
5. the control method of damming according to claim 3, is characterized in that: for catchpit or the jump well of traditional separated drainage system, PLC system, when shutoff valve cuts out, controlling water kick valve to open; When water level reaches peak level height, PLC system will control shutoff valve and overflow weir control valve is opened simultaneously.
6. the control method of damming according to claim 3, is characterized in that: the unlatching size of the cutoff hole of rain sewage two-layer compound manhole maybe needs the water quality of damming to arrange according to the concrete amount of damming.
7. the control method of damming with memory function according to claim 3, is characterized in that: when water level surpasses manhole maximum stage, intelligent control box can be sent distant early warning signal.
8. the control method of damming with memory function according to claim 3, is characterized in that: when can't detect rainwater signal or flow signal, the instruction that motor operated valve can send according to PLC system is transformed into predetermined state.
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CN104278736A (en) * 2014-11-04 2015-01-14 常熟市浩通水利工程有限公司 Rainwater-sewage splitting device
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CN107859137A (en) * 2017-10-30 2018-03-30 武汉圣禹排水系统有限公司 A kind of method for controlling the sewage that each section is cut in dirty pipe in drainage system to import facility of regulating and storing during rainfall
CN107869177A (en) * 2017-10-30 2018-04-03 武汉圣禹排水系统有限公司 A kind of method for controlling the sewage that each section is cut in dirty pipe in drainage system to import trunk sewer and facility of regulating and storing during rainfall
CN107859137B (en) * 2017-10-30 2021-01-26 武汉圣禹排水系统有限公司 Method for controlling sewage in drainage system to be converged into storage facility during rainfall
CN107620372A (en) * 2017-10-30 2018-01-23 武汉圣禹排水系统有限公司 A kind of method for controlling the sewage that each shunting facility is cut in dirty pipe in drainage system to import trunk sewer during rainfall
CN107675770B (en) * 2017-10-30 2021-01-26 武汉圣禹排水系统有限公司 Method for controlling sewage in drainage system to be converged into sewage main pipe during rainfall
CN107869177B (en) * 2017-10-30 2020-07-24 武汉圣禹排水系统有限公司 Method for controlling sewage in sewage intercepting pipes of each area in drainage system to sink
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CN108385809A (en) * 2018-03-21 2018-08-10 扬州蓝翔机电工程有限公司 A kind of intelligent control method for cutting dirty system

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