CN204212245U - A kind of low-pressure drainage system collected for municipal wastewater - Google Patents

A kind of low-pressure drainage system collected for municipal wastewater Download PDF

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Publication number
CN204212245U
CN204212245U CN201320727698.8U CN201320727698U CN204212245U CN 204212245 U CN204212245 U CN 204212245U CN 201320727698 U CN201320727698 U CN 201320727698U CN 204212245 U CN204212245 U CN 204212245U
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CN
China
Prior art keywords
vacuum
collecting unit
water collecting
hydraulic cylinder
liquid level
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Expired - Fee Related
Application number
CN201320727698.8U
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Chinese (zh)
Inventor
范彬
杨文元
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Jiangsu Cunzhen Water Technology Services Co ltd
Research Center for Eco Environmental Sciences of CAS
Original Assignee
Jiangsu Cunzhen Water Technology Services Co ltd
Research Center for Eco Environmental Sciences of CAS
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Priority to CN201320727698.8U priority Critical patent/CN204212245U/en
Application granted granted Critical
Publication of CN204212245U publication Critical patent/CN204212245U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

A kind of low-pressure drainage system collected for municipal wastewater, comprise vacuum water collecting unit, vacuum pipe system, Vacuum Pumps Station and control system, to be entered the header tank in vacuum water collecting unit by flow by gravity from the sewage of each draining unit, vacuum pipe system is entered by the vacuum valve be arranged on header tank, then the air hydraulic cylinder in Vacuum Pumps Station is entered, air hydraulic cylinder top connects vacuum pump, to be bled by vacuum pump the air on air hydraulic cylinder top, connect drainage pump bottom air hydraulic cylinder, by drainage pump, the sewage entered in air hydraulic cylinder is discharged.The vacuum pipe tip connecting vacuum water collecting unit at vacuum pipe system arranges evacuated tube and controls the tonifying Qi of evacuated tube, to be reduced in the demand that vacuum pipe network tip maintains higher vacuum, thus to cancel or the demand of large-scale vacuum energy storage device and the demand of cancellation or reduction vacuum water tank sinking installation are set in reduction system.Control system comprises the vacuum water collecting unit PLC control cabinet and Vacuum Pumps Station PLC control cabinet and central control console that arrange nearby, each vacuum water collecting unit PLC control cabinet is connected with central control console by communication line with Vacuum Pumps Station PLC, and central control console is connected with internet.Three kinds of modes that relative importance value reduces successively are comprised to the control of low-pressure drainage system, i.e. on-site manual control, central control console Non-follow control and PLC programme-control, manipulation personnel can carry out data communication with central control console and the operation of remote control low-pressure drainage system.

Description

A kind of low-pressure drainage system collected for municipal wastewater
Technical field
The invention belongs to municipal drainage technical field, be specifically related to a kind of systems technology utilizing vacuum drainage technology to collect community wastewater and discharge.
Background technology
Vacuum drainage is the important supplement of gravity drainage technology, the municipal wastewater in gravity drainage blind area can be carried out collecting and discharging by low-pressure drainage system.Vacuum drainage technological system for heavy civil draining needs to arrange large-scale vacuum power accumulating tank usually, and by reducing the Installation Elevation of terminal water tank, ensure there is enough large relative vacuum degree to realize normal vacuum drainage at pipe network tip, vacuum power accumulating tank usually and terminal water tank merge into vacuum tank.Traditional vacuum water discharge technology vacuum power accumulating tank (or vacuum tank) is bulky, and when adopting sunk type to install, difficulty of construction is high, is unfavorable for the applications reducining the construction costs or receive in space restriction.
Summary of the invention
The present invention proposes a kind of novel low-pressure drainage system device, by reducing the requirement of pipe network tip vacuum, cancelling or reducing the requirement arranging large-scale vacuum energy storage canister, and terminal sewage collecting tank also need not sink to installing.
The technical solution of the utility model is, a kind of low-pressure drainage system for municipal drainage, comprising: the integrated pumping plant of vacuum water collecting unit, vacuum pipe system, vacuum and control system.
Vacuum water collecting unit comprises header tank 101, header tank 101 generally adopts buried installation, close on each draining unit to be conducted oneself with dignity discharged sewage by waterpower for collecting, at the water inlet of header tank 101, grid 102 is set to tackle the foreign material in sewage, three float switches 103 are established in header tank 101, indicate 30% liquid level in header tank 101 respectively, 60% liquid level and 90% liquid level, at the delivery port of header tank 101, vacuum valve 104 is installed, open vacuum valve 104, sewage in header tank 101 enters vacuum tube 2 by vacuum valve 104, cover net 105 is established to enter vacuum valve 104 to stop the foreign material that may exist in header tank at the water inlet of vacuum valve 104, near the position of vacuum valve 104, evacuated tube 106 is installed at vacuum pipe 2 and connects air, evacuated tube 106 is installed normally closed Unidirectional solenoid valve 107, vacuum tube 2 can be entered by opening Unidirectional solenoid valve 107 air, but the water in vacuum tube 2 or gas all can not enter air.
Vacuum pipe system is connected with the vacuum valve 104 of each water collecting unit, for by the sewage transport in header tank 101 to Vacuum Pumps Station, vacuum pipe system is according to related standards criterion settings.
Vacuum Pumps Station is by air hydraulic cylinder 301, vacuum pump 302, drainage pump 303 forms, air pumping out type vacuum pump selected by vacuum pump 302, large lift foul water pump selected by drainage pump 303, air hydraulic cylinder 301 is connected with the terminal exit of vacuum pipe system by the connector 304 being arranged on middle part, be connected with the air inlet port of vacuum pump 302 by the connector 305 being arranged on top, be connected with the water inlet of drainage pump 303 by the connector 306 being arranged on bottom, pressure transmitter and fluid level transmitter are set in air hydraulic cylinder 301, gather pressure signal in air hydraulic cylinder 301 and liquid level signal respectively and be sent to control system.In air hydraulic cylinder 301, establish warning liquid level 307 from top to bottom, draining starts liquid level 308, and draining stops liquid level 309.Arranging warning liquid level 307 is in order to anti-sealing enters vacuum pump 302, preferred liquid level 307 is 60-80cm with the vertical distance of connector 305, arrange draining startup liquid level 308 to start to control drainage pump 303, preferred liquid level 308 is 10-30cm with the distance of liquid level 307, arranging draining stops liquid level 309 stop controlling drainage pump 303 and prevent drainage pump 303 from finding time, and preferred liquid level 309 is 5-15cm with the vertical distance of connector 306.Retain at the foreign material arranged in filter 310 pairs of sewage along the cross section of air hydraulic cylinder respectively up and down of connector 304, prevent large foreign material from entering drainage pump and vacuum pump.
Control system comprises water collecting unit switch board, Vacuum Pumps Station switch board and central control console, water collecting unit switch board closes on water collecting unit and arranges, Vacuum Pumps Station switch board closes on Vacuum Pumps Station and arranges, the mode that water collecting unit switch board and Vacuum Pumps Station switch board all adopt PLC to control, the operation of domination set water unit and Vacuum Pumps Station respectively, and carry out data communication with central control console.Central control console is for collecting, processing and store the operation information from the whole low-pressure drainage system comprising water collecting unit switch board and Vacuum Pumps Station switch board, control the operation of whole drainage system, send alarm signal by on-the-spot or remote mode to operating personnel and accept the manipulation that operating personnel are implemented by on-the-spot or remote mode.Following three kinds of modes are comprised to the control of vacuum water collecting unit and Vacuum Pumps Station:
(1) on-site manual mode: operating personnel realize the start stop operation to equipment by the button on water collecting unit switch board or Vacuum Pumps Station switch board;
(2) remote manual mode: operating personnel send instruction by central control console to the PLC of water collecting unit switch board or Vacuum Pumps Station switch board, manipulation site plant;
(3) PLC program controlled mode: the PLC respectively by switch board water collecting unit switch board or Vacuum Pumps Station switch board controls according to the operation of program to water collecting unit or Vacuum Pumps Station of setting.
The selection key that the selection of three kinds of control modes is controlled by on-site manual control/Program-controled Conversion Switch and the central control console remote manual of water collecting unit switch board and pumping plant switch board/automatically controlled has come, and wherein on-site manual controls to have highest priority.
It is as follows to the PLC programme-control of water collecting unit: when 60% liquid-level switch of float switch 103 touches, open vacuum valve 104, until close vacuum valve 104 when 30% liquid-level switch of float switch 103 touches, after vacuum valve 104 is opened at interval of a period of time of short duration opens solenoid valve 107 once, the preferred interval time is 107 times of 5-10 minute opens solenoid valve is 5-10 second, when 90% liquid-level switch of float switch 103 touches, send alarm signal.
It is as follows to the PLC programme-control of Vacuum Pumps Station: when the pressure in air hydraulic cylinder 301 is higher than pressure upper limit, start vacuum pump 302, preferred upper limit pressure is that relative vacuum degree-40 is to-50kPa, when the pressure in air hydraulic cylinder 301 is lower than threshold pression, stop vacuum pump 302, preferred lower limit pressure is that relative vacuum degree-60 is to-70kPa, when the liquid level in air hydraulic cylinder 301 arrives 307, report to the police and stop vacuum pump 302, drainage pump 303 is started when the liquid level in air hydraulic cylinder 301 arrives liquid level 308, when the liquid level in air hydraulic cylinder 301 arrives liquid level 309, stop drainage pump 303.
Accompanying drawing explanation
Fig. 1 water collecting unit installs graph of a relation
Fig. 2 Vacuum Pumps Station installs graph of a relation
The PLC control system figure of Fig. 3 embodiment vacuum water collecting unit switch board
The PLC control system figure of Fig. 4 embodiment Vacuum Pumps Station switch board
Fig. 5 embodiment central control console network topological diagram
Embodiment
Certain vacuum drainage engineering design sewage quantity is 300 tons/day, design sewage peak flow is 7L/ second, design gas-water ratio 3:1,11 vacuum water collecting unit are set in system, header tank elevation is 43.40m, lowest elevation is 4.90m, establishes pump house at elevation 5.80m place, installs Vacuum Pumps Station and central control console in pump house.
1. vacuum water collecting unit.Vacuum water collecting tank 101 volume is 3m 3, vacuum valve 105 is wherein motor-driven ball valve.
2. vacuum pipe system.Be made up of arm (DE75), main (DE110) and supervisor (DE160), pipeline overall length 1500 meters, wherein vacuum water collecting unit to the vacuum pipe length of Vacuum Pumps Station of distalmost end is 610 meters.
3. Vacuum Pumps Station.Air hydraulic cylinder 301 tank body height 1.5 meters, diameter 1.2 meters, warning liquid level 307 is 70cm apart from the vertical distance of connector 305, and drainage pump starts liquid level 308 with warning liquid level 307 at a distance of 20cm, and drainage pump stops liquid level 309 to be 10cm with the vertical distance of connector 306.Two water-ring vacuum pumps selected by vacuum pump 302, every platform rated power 2.35kW, rated discharge amount 80m 3/ h, the using and the reserved.Drainage pump 303 selects two lifts to be the foul water pump of 32 meters, every platform rated power 5.50kW, specified displacement 50m 3/ h.
4. control system.PLC in each water collecting unit switch board is connected with central control console by optical fiber, and its PLC control system figure as shown in Figure 3; The PLC of Vacuum Pumps Station switch board is connected with central control console by data wire, and its PLC control system figure as shown in Figure 4; As shown in Figure 5, central control console is connected with remote terminal by internet central control console network topological diagram, and operating personnel can send remote control instruction by remote terminal to central control console.It is as follows to the programme-control of water collecting unit: when 60% liquid-level switch of float switch 103 touches, open vacuum valve 104, until close vacuum valve 104 when 30% liquid-level switch of float switch 103 touches, between every after vacuum valve 104 is opened, 107 times of 10 minutes opens solenoid valve are 10 seconds, when 90% liquid-level switch of float switch 103 touches, send alarm signal.It is as follows to the programme-control of Vacuum Pumps Station: when the pressure in air hydraulic cylinder 301 is higher than relative vacuum degree-45kPa, start vacuum pump 302, when the pressure in air hydraulic cylinder 301 is lower than relative vacuum degree-65kPa, stop vacuum pump 302, when the pressure in air hydraulic cylinder 301 is higher than relative vacuum degree-35kPa, reports to the police and start appendage vacuum pump.Start drainage pump 303 when the liquid level in air hydraulic cylinder 301 arrives liquid level 308, when the liquid level in air hydraulic cylinder 301 arrives liquid level 309, stop drainage pump 303, when the liquid level in air hydraulic cylinder 301 arrives 307, report to the police, start redundant sump pump and stop vacuum pump 302.
The present embodiment cost is adopt conventional articulated gravity formula draining cost 1/4, is adopt conventional vacuum freeze mode vacuum drainage cost 2/3.Actual motion was more than 1 year for the present embodiment, and system stability fault-free, ton water power consumption is lower than 0.7 degree.Because vacuum pipe whole process is airtight, reveal without foul smell, sewage.Without extensive excavation in project implementing process.

Claims (3)

1. the low-pressure drainage system collected for municipal wastewater, feature is: on the vacuum pipe near water collecting unit, arrange evacuated tube (106) connect air, said evacuated tube (106) arranges Unidirectional solenoid valve (107), and Unidirectional solenoid valve (107) is connected with control system by data circuit; Vacuum Pumps Station forms primarily of air hydraulic cylinder (301), vacuum pump (302) and drainage pump (303) three part.
2. low-pressure drainage system as claimed in claim 1, feature is: air pumping out type vacuum pump selected by vacuum pump (302), large lift foul water pump selected by drainage pump (303), in air hydraulic cylinder (301), pressure transmitter and fluid level transmitter are set, draining warning liquid level (307) is established from top to bottom in air hydraulic cylinder (301), draining starts liquid level (308), draining stops liquid level (309), draining warning liquid level (307) is 60-80cm with the vertical distance of connector (305), it is 10-30cm that draining starts liquid level (308) with the distance of draining warning liquid level (307), draining stops liquid level (309) to be 5-15cm with the vertical distance of connector (306), respectively filter (310) is set along the cross section of air hydraulic cylinder up and down the foreign material in sewage is retained at connector (304), prevent large foreign material from entering drainage pump and vacuum pump.
3. low-pressure drainage system as claimed in claim 1, feature is: control system comprises water collecting unit switch board, pumping plant switch board and central control console; Water collecting unit switch board, pumping plant switch board with between central control console, between water collecting unit switch board and water collecting unit, pumping plant switch board is with between Vacuum Pumps Station, be connected with data circuit respectively between central control console with internet.
CN201320727698.8U 2013-11-18 2013-11-18 A kind of low-pressure drainage system collected for municipal wastewater Expired - Fee Related CN204212245U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320727698.8U CN204212245U (en) 2013-11-18 2013-11-18 A kind of low-pressure drainage system collected for municipal wastewater

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Application Number Priority Date Filing Date Title
CN201320727698.8U CN204212245U (en) 2013-11-18 2013-11-18 A kind of low-pressure drainage system collected for municipal wastewater

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CN204212245U true CN204212245U (en) 2015-03-18

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107447837A (en) * 2017-08-11 2017-12-08 湖南真创环保科技有限公司 With the quick low-pressure drainage system and water discharge method for opening passive vacuum blowoff valve
CN107938824A (en) * 2017-12-19 2018-04-20 湖南真创环保科技有限公司 A kind of remote vacuum high speed water discharge method
CN107989150A (en) * 2017-12-19 2018-05-04 湖南真创环保科技有限公司 A kind of remote vacuum high speed drainage system

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107447837A (en) * 2017-08-11 2017-12-08 湖南真创环保科技有限公司 With the quick low-pressure drainage system and water discharge method for opening passive vacuum blowoff valve
CN107938824A (en) * 2017-12-19 2018-04-20 湖南真创环保科技有限公司 A kind of remote vacuum high speed water discharge method
CN107989150A (en) * 2017-12-19 2018-05-04 湖南真创环保科技有限公司 A kind of remote vacuum high speed drainage system

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150318

Termination date: 20181118

CF01 Termination of patent right due to non-payment of annual fee