CN104652573A - Vacuum drainage system technology and device used for collecting municipal wastewater - Google Patents
Vacuum drainage system technology and device used for collecting municipal wastewater Download PDFInfo
- Publication number
- CN104652573A CN104652573A CN201310576518.5A CN201310576518A CN104652573A CN 104652573 A CN104652573 A CN 104652573A CN 201310576518 A CN201310576518 A CN 201310576518A CN 104652573 A CN104652573 A CN 104652573A
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- vacuum
- valve
- pump
- air
- pipe
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
-
- 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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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sewage (AREA)
Abstract
The invention provides a vacuum drainage system technology and device used for collecting municipal wastewater. An evacuation pipe is arranged at the end of a vacuum pipe network and is installed on the side of a vacuum pipe of a vacuum valve connected with a water collecting tank; a one-way valve capable of being opened and closed is connected with the atmosphere; under the condition that the vacuum valve is opened, when the vacuum degree of the end of the pipe network is over low, a small amount of air is replenished through the evacuation pipe, so that the requirement for the vacuum degree of the end of the vacuum pipe network is reduced; and under the condition that the relative vacuum degree of the end of the vacuum pipe network is smaller than zero, vacuum drainage can be achieved. When an air exhaust vacuum pump is used as a vacuum occurring source, a large vacuum energy storage device does not need to be arranged in a vacuum pump station, and the vacuum pump station does not need to be installed in a sinking manner. When an air-water mixed vacuum pump serves as the vacuum occurring source and a drainage device, overheating caused by long-time evacuation of the vacuum pump can be avoided.
Description
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
It is the important step of municipal drainage and sewerage treatment that community wastewater is collected, and its objective is and is carried out collecting by the sewage that the multiple draining units in community discharge and be delivered to main conduit discharge or undertaken processing rear discharge by sewage treatment facility.Conventional community wastewater collection technique is gravity water discharge technology, and the sewage namely by the deadweight of water, each draining unit being discharged enters to be received water arm and confluxes to receipts water conduit tube to reach the object of collecting community wastewater.There is blind area in the application of gravity drainage technology, is difficult to accomplish the full collection to municipal wastewater.A kind of situation is that partial drainage unit physical features is lower, and sewage can not flow automatically and enter main; Another kind of situation is that gravity drainage caliber is large, buried depth of pipeline large, and some community internal cause geology and the factor such as above ground structure, road do not possess the execution conditions laying gravity drainage pipeline.Employing vacuum drainage technology can realize the sewage collecting in above-mentioned gravity drainage blind area.Vacuum drainage technological system is made up of header tank, vacuum valve, vacuum pipe, vacuum tank, Vacuum Pumps Station and control system etc. usually.Its drainage principle utilizes the vacuum occurring source such as vacuum pump in vacuum pipe system, form negative pressure, when the vacuum valve connecting vacuum pipe and header tank is opened, sewage in header tank enters vacuum pipe and flows to vacuum sewage collection terminal under vacuum draw effect drives, and discharges in low-pressure drainage system eventually through foul water pump etc.The resistance that water transmits in vacuum pipe comprise waterpower deadweight and along the journey resistance of ducting.For ensureing that the sewage entered in header tank can be discharged by vacuum pipe system smoothly, certain residue negative pressure must be remained, usually below-10kPa at the vacuum pipe tip connecting header tank.
According to the difference of vacuum occurring source and drainage pattern thereof, vacuum drainage can be divided into vacuum freeze mode and online vacuum type two kinds of forms.The former must arrange vacuum tank to store vacuum energy between vacuum pump and vacuum pipe, utilize air in vacuum pump aspiration vacuum tank, make to form negative pressure in vacuum tank, and then drive the sewage in the vacuum pipe that is connected with vacuum tank to collect to vacuum tank, then discharged by the sewage in vacuum tank by dredge pump, sewage does not enter vacuum pump in the process again; The latter utilizes the air-water mixture in the direct aspiration vacuum pipeline of special vacuum pump, and is discharged vacuum system, and sewage needs to pass through in vacuum pump in the process.Both respectively have pluses and minuses.The former vacuum pump type selecting is easy, and the matured product that market can for be selected is many, but system complex, latter system is simple, but must adopt special vacuum pump.The two is for ensureing that tip residue negative pressure adopts different strategies respectively.Vacuum freeze mode mainly increases the volume of vacuum power accumulating tank, and usually needs to take sunk type to install to vacuum tank, and therefore pumping plant takes up an area large, and difficulty of construction is high.Online vacuum type mainly by extending suction time, but is cooled the pump housing by sewage wherein because online vacuum pump relies on, and long-time withdrawing air can cause the pump housing overheated.
Summary of the invention
Main purpose of the present invention is the advantage absorbing existing two kinds of vacuum drainage modes, overcomes the shortcoming of the two simultaneously.
Water transmits with discontinuous post type in vacuum pipe, keeps one section of air column between two sections of water columns.The power that every section of water column moves ahead must be provided by the pressure reduction between its front end face and rear end face.When this pressure reduction is not enough to overcome resistance and water column deadweight, namely vacuum drainage can not carry out, and this situation is generally easily occurring at pipe network tip.
Key of the present invention arranges at vacuum pipe tip the evacuated tube connecting air, and control the keying of evacuated tube, increases the pressure reduction of water column front end face and rear end face, tip water column can be moved ahead smoothly by filling into a certain amount of air.
Content of the present invention comprises: evacuated tube and supplementing method for air, integrated pumping plant and method thereof.
Evacuated tube 1 is arranged on the water outlet side 5 that pipe network tip connects the vacuum valve 4 of vacuum water collecting tank 2 and vacuum pipe 3, evacuated tube 1 connects air 7 by the valve 6 of unidirectional a controlled keying, opening valve 6, air can enter vacuum pipe, shut off valve 6, air then can not enter vacuum pipe 3, but no matter whether valve 6 opens and closes, and the gas in vacuum pipe 3 or water all can not overflow in evacuated tube 1.After vacuum valve 4 is opened, if when the relative vacuum of its water outlet side 5 is spent low, opening valve 6, shut off valve 6 after blink, as preferably, valve 6 each opening time is set as 5-15 second.The strategy that a kind of control valve 6 is opened is, detects the vacuum of water outlet side 5 at vacuum valve 4 open period, the opening valve 6 when the relative vacuum degree of vacuum valve 6 water outlet side 5 is greater than setting value, as preferably, and the opening valve 6 when the vacuum of water outlet side 5 is greater than-2kPa.The strategy that another kind of control valve 6 is opened, after vacuum valve 4 is opened, often postpones a setting-up time, and open and close valve 6 once, the preferred settings time is 5-15 minute.
Integrated pumping plant and method have two kinds of modes.The integrated pumping plant 81 of method one selects air pumping out type vacuum pump as vacuum occurring source, is made up of vacuum pump 9, air hydraulic cylinder 10, drainage pump 11.Air hydraulic cylinder 10 is connected with vacuum pipe 3 by the connector 12 be arranged in the middle part of tank body, is connected by the connector 13 arranging tank body top with vacuum pump 9, is connected with the water inlet of drainage pump 11 by the connector 14 being arranged on tank base.Above the liquid level 15 of connector 12 in tank body, preferred connector 12 is 10-20cm with the minimum perpendicular distance of liquid level 15.Connector 13 must keep certain height difference with liquid level 15, and to prevent water from entering vacuum pump, the preferred discrepancy in elevation is not less than 80cm-120cm.Connector 14 and liquid level 15 should keep certain height difference, and to meet the job requirement of drainage pump, the preferred discrepancy in elevation is 10-15cm.Air hydraulic cylinder 10 must meet related standards and the specification of pressure vessel, general stage casing is cylindrical, upper base and goes to the bottom as arc surface shape, when the vertical height meeting connector 12,13,14 and liquid level 15 requires, its volume and member and main geometric are determined according to the water yield wherein intending temporarily storing.Preferably in air hydraulic cylinder 10, between connector 12 and connector 14, filter is set along the cross section of air hydraulic cylinder 10, to tackle the foreign material being entered air hydraulic cylinder 10 by vacuum pipe 3.Relative vacuum degree on detection air hydraulic cylinder 10 liquid level 15 is to determine the keying of vacuum pump, and the control range of preferred relative vacuum degree is-45kPa to-65kPa.Detect the position of the liquid level 15 in air hydraulic cylinder 10, to control the keying of drainage pump 11, start drainage pump 11 when liquid level 15 reaches setting value, the delivery port of the water in air hydraulic cylinder 10 by drainage pump 11 is discharged.The integrated pumping plant 82 of method two selects air water to polyblend formula vacuum pump as vacuum occurring source, be made up of vacuum pump 16 and air hydraulic cylinder 17, air hydraulic cylinder 17 is connected with vacuum pipe 3 by the connector 18 being arranged on top, be connected with the entrance of vacuum pump 16 by the connector 19 being arranged on vacuum tank bottom.Detect the vacuum of air hydraulic cylinder 17 inside to control the keying of vacuum pump, preferred vacuum degree control scope is-45kPa to-65kPa.When vacuum pump 16 is opened, the water in air hydraulic cylinder 17 or gas are discharged by the outlet of vacuum pump 16.Air hydraulic cylinder 17 must meet the standard and specification of general pressure vessel, preferably arranges the foreign material that filter enters air hydraulic cylinder 17 with interception by vacuum tube therein and enters vacuum pump 16.Both can bleed due to vacuum pump 16 and also can draw water, therefore the volume of air hydraulic cylinder 17 specially not required.Owing to reducing the vacuum level requirements to pipe network tip, as adopted Vacuum Pumps Station 81, pumping plant can be installed on the ground.Applying technical method of the present invention, as adopted Vacuum Pumps Station 82, pumping plant 82 can be avoided to generate heat because long-time sky takes out.
For the operation realizing comprising the whole low-pressure drainage system of evacuated tube 1, vacuum valve 4 and integrated pumping plant 81 or 82 controls, usually intrasystem various controlling functions is needed to be integrated in a control system, by the hardware and software feature collection in control system, the various detection signal in management system and operation information, reach the control to each controlled part operation in system, the management of system cloud gray model information and the early warning of the system failure and warning.
Major advantage of the present invention is, vacuum pipe tip need not keep a higher vacuum, therefore also just there is no need to arrange the vacuum power accumulating tank of large volume or powerful vacuum pump, investment reduction, the floor space reducing pumping plant and difficulty of construction.
Accompanying drawing explanation
Fig. 1 is the installation graph of a relation of evacuated tube and header tank, vacuum valve, vacuum pipe etc.
Fig. 2 is the installation graph of a relation of Vacuum Pumps Station 81
Fig. 3 is the installation graph of a relation of Vacuum Pumps Station 82
Embodiment
One scenic spot, city takes up an area about 12.5 hectares, design sewage quantity 300 tons/day.In scenic spot high-land mistake fall, lake every.Scenic spot internal drainage point compares dispersion, and sewage centralized collection difficulty is large, sewage self-flowing cannot be accessed the sewage network in city for many years always, sewage with ditch overflow, to scenic environment and close on river water quality and cause severe contamination.By restrictions such as view requirements, the Vacuum Pumps Station that floor space is large and engineering quantity is large in scenic spot, should not be built.Adopt technology of the present invention:
(1) whole engineering arranges 11 header tanks 2 altogether, and header tank 2 elevation is 43.40m, and lowest elevation is 4.90m.First the sewage of each drainage point enter the header tank 2 arranged nearby by flow by gravity, the volume of each header tank 2 is 3m
3, in header tank 2, establish grid, establish cover net to tackle foreign material at the delivery port of header tank connection vacuum valve 4.The side position 5 connecting vacuum pipe 3 at vacuum valve 4 installs evacuated tube 1, and evacuated tube 1 connects air 7 by Unidirectional solenoid valve 6.
(2) vacuum tube 3 comprises arm (DE75), main (DE110) and supervisor (DE160), and arm connects header tank and main, main connecting branch and supervisor, and supervisor is connected by connector 12 with air hydraulic cylinder 10.According to the position distribution of header tank, in conjunction with the landform in park and view, lay 3 vacuum mains altogether, long 610 meters of wherein the longest main.
(3) arrange a Vacuum Pumps Station 81 at elevation 5.80m place, wherein the volume of air hydraulic cylinder 10 is 2m
3, tank body height is 1.80 meters, and liquid level 15 is up to 0.60 meter.Vacuum tube 3 connects air hydraulic cylinder by connector 12, and connector 12 is 0.80 meter apart from height at the bottom of tank.Connector 13 is established to be connected with the import of vacuum pump 9 at the top of air hydraulic cylinder 10.Connector 14 is established to be connected with the water inlet of drainage pump 11 in the bottom of air hydraulic cylinder 10.Two water-ring vacuum pumps selected by vacuum pump 9, every platform rated power 2.35kW, rated discharge amount 80m
3/ h, the using and the reserved.Drainage pump 11 selects two lifts to be the foul water pump of 32 meters, every platform rated power 5.50kW, specified displacement 50m
3/ h.
(4) when each header tank 2 liquid level arrives 60%, vacuum valve 4 is opened, and sewage enters vacuum tube 3.After vacuum valve unlatching after 10 minutes, open an electromagnetic valve 6, the time is 10 seconds, by evacuated tube 1 to tonifying Qi in vacuum tube 3.When header tank liquid level is reduced to 30%, vacuum valve cuts out.
(5) establish central control console in system, the operation of each header tank, pipeline, valve, air hydraulic cylinder, vacuum pump, drainage pump etc. and fault message are monitored, and remote control can be carried out to each critical piece.
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 0.70 degree.Because vacuum pipe whole process is airtight, reveal without foul smell, sewage.Without extensive excavation in project implementing process, construction period scenic spot need not close.
Claims (5)
1. the low-pressure drainage system technology for municipal wastewater collection and device, feature is: arrange evacuated tube 1 at connection vacuum water collecting tank 2 with the position of the water outlet side 5 of the vacuum valve 4 of vacuum pipe 3, evacuated tube 1 is communicated with air by unidirectional normally close valve 6, at vacuum valve 4 open period, by the keying of control valve 6 to tonifying Qi in vacuum tube to reduce the requirement to vacuum pipe tip vacuum, as long as pipe network tip relative vacuum degree is less than the requirement that 0 can meet vacuum drainage.
2. low-pressure drainage system technology as claimed in claim 1 and device, feature is: can take following tonifying Qi strategy, at vacuum valve 4 open period, when net tip relative vacuum Du ≥ ?2kPa time, of short duration opening valve 6 to vacuum tube 3 tonifying Qi, opening time of preferred valve 6 be 5 ?15 seconds.
3. low-pressure drainage system technology as claimed in claim 1 and device, feature is: can take following tonifying Qi strategy, at vacuum valve 4 open period, at interval of a period of time of short duration opening valve 6 to vacuum tube tonifying Qi, preferred said interval time be 5 ?15 minutes, time of preferred said of short duration opening valve 6 be 5 ?15 seconds.
4. low-pressure drainage system technology as claimed in claim 1 and device, feature is: when the device adopting following said integrated pumping plant 81 as vacuum occurring source and effluent sewerage, integrated pumping plant 81 is by vacuum pump 9, air hydraulic cylinder 10, drainage pump 11 forms, air pumping out type vacuum pump selected by its intermediate pump 9, high-lift foul water pump selected by drainage pump 11, air hydraulic cylinder 10 is when liquid level 15 keeps a safe distance to prevent water from entering vacuum pump 9 with connector 13, its volume is determined according to the sewage quantity temporarily stored, vacuum power accumulating need not be considered, air hydraulic cylinder 10 also need not sink to installing.
5. low-pressure drainage system technology as claimed in claim 1 and device, feature is: when adopt air water polyblend the device of formula vacuum pump as vacuum occurring source and effluent sewerage time can avoid causing vacuum pump overheated because finding time for a long time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310576518.5A CN104652573A (en) | 2013-11-18 | 2013-11-18 | Vacuum drainage system technology and device used for collecting municipal wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310576518.5A CN104652573A (en) | 2013-11-18 | 2013-11-18 | Vacuum drainage system technology and device used for collecting municipal wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104652573A true CN104652573A (en) | 2015-05-27 |
Family
ID=53244160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310576518.5A Pending CN104652573A (en) | 2013-11-18 | 2013-11-18 | Vacuum drainage system technology and device used for collecting municipal wastewater |
Country Status (1)
| Country | Link |
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| CN (1) | CN104652573A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929949A (en) * | 2015-06-04 | 2015-09-23 | 马钢(集团)控股有限公司 | Evacuating device for centrifugal drainage pump and evacuating method |
| CN109469190A (en) * | 2019-01-04 | 2019-03-15 | 四川荣晨建设工程有限公司 | A kind of drainage arrangement collected for municipal wastewater |
| CN110618652A (en) * | 2019-11-07 | 2019-12-27 | 山东中车华腾环保科技有限公司 | Outdoor vacuum drainage system, control system and control method |
| CN113309196A (en) * | 2021-06-08 | 2021-08-27 | 杭州聚川环保科技股份有限公司 | Method and device for improving suction lift of vacuum drainage system |
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| CN1062183A (en) * | 1990-11-19 | 1992-06-24 | 伯顿机械承包公司 | Have the vacuum sewage system of air inlet electric controller with increased lift capabilities |
| JPH09137495A (en) * | 1995-09-12 | 1997-05-27 | Hitachi Metals Ltd | Vacuum sewage-collecting equipment |
| US20020061232A1 (en) * | 2000-08-12 | 2002-05-23 | Michael Zlotos | Apparatus for conveying bulk material |
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| CN101275405A (en) * | 2007-03-26 | 2008-10-01 | 东亚联合控股（集团）有限公司 | Vacuum drainage system |
| CN201865162U (en) * | 2010-10-20 | 2011-06-15 | 山东华腾环保科技有限公司 | Vacuum sewage collection device |
| CN201865186U (en) * | 2010-10-22 | 2011-06-15 | 山东华腾环保科技有限公司 | Sewage collection and drainage device |
| CN202610963U (en) * | 2012-06-11 | 2012-12-19 | 长沙中联重科环卫机械有限公司 | Sewage suction device for sewage suction truck |
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2013
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062183A (en) * | 1990-11-19 | 1992-06-24 | 伯顿机械承包公司 | Have the vacuum sewage system of air inlet electric controller with increased lift capabilities |
| JPH09137495A (en) * | 1995-09-12 | 1997-05-27 | Hitachi Metals Ltd | Vacuum sewage-collecting equipment |
| US20020061232A1 (en) * | 2000-08-12 | 2002-05-23 | Michael Zlotos | Apparatus for conveying bulk material |
| KR100472568B1 (en) * | 2004-09-06 | 2005-03-14 | 그린엔텍 주식회사 | Multi-stage Vacuum Sewer Collection System |
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| CN202610963U (en) * | 2012-06-11 | 2012-12-19 | 长沙中联重科环卫机械有限公司 | Sewage suction device for sewage suction truck |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929949A (en) * | 2015-06-04 | 2015-09-23 | 马钢(集团)控股有限公司 | Evacuating device for centrifugal drainage pump and evacuating method |
| CN109469190A (en) * | 2019-01-04 | 2019-03-15 | 四川荣晨建设工程有限公司 | A kind of drainage arrangement collected for municipal wastewater |
| CN109469190B (en) * | 2019-01-04 | 2020-04-24 | 四川荣晨建设工程有限公司 | A drainage device for municipal administration sewage is collected |
| CN110618652A (en) * | 2019-11-07 | 2019-12-27 | 山东中车华腾环保科技有限公司 | Outdoor vacuum drainage system, control system and control method |
| CN113309196A (en) * | 2021-06-08 | 2021-08-27 | 杭州聚川环保科技股份有限公司 | Method and device for improving suction lift of vacuum drainage system |
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Application publication date: 20150527 |
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