CN104452944B - A kind of gas-liquid two-phase raising section of vacuum drainage pipeline - Google Patents
A kind of gas-liquid two-phase raising section of vacuum drainage pipeline Download PDFInfo
- Publication number
- CN104452944B CN104452944B CN201410724834.7A CN201410724834A CN104452944B CN 104452944 B CN104452944 B CN 104452944B CN 201410724834 A CN201410724834 A CN 201410724834A CN 104452944 B CN104452944 B CN 104452944B
- Authority
- CN
- China
- Prior art keywords
- section
- export
- port
- ascent stage
- arrival end
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 19
- 239000002245 particle Substances 0.000 claims abstract description 18
- 238000011084 recovery Methods 0.000 claims abstract description 14
- 239000010865 sewage Substances 0.000 claims description 27
- 239000007787 solid Substances 0.000 claims description 8
- 239000012071 phase Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000005514 two-phase flow Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
Landscapes
- 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 present invention relates to a kind of gas-liquid two-phase raising section of vacuum drainage pipeline, comprising: the deformation section with arrival end and the port of export; There is the ascent stage of arrival end and the port of export; There is the recovery section of arrival end and the port of export; Wherein, the port of export of deformation section is connected with the arrival end of ascent stage, and the port of export of ascent stage is connected with the entrance recovering section; The described ascent stage, the shape of arbitrary ascent stage section perpendicular to ascent stage center line was identical in order to tilt upward setting, and the particle diameter that the vacuum valve being not less than the vacuum drainage pipeline be connected with the described deformation section port of export from the particle diameter that the ascent stage passes through passes through; The girth of ascent stage square be greater than 4 times of pis with area ratio.This programme, by changing deformation section and the structure recovering section, achieves the high-efficient dirt exhausting of more than 200mm vacuum drainage pipeline.
Description
Technical field
The present invention relates to vacuum drainage field, specifically, relate to a kind of gas-liquid two-phase raising section of vacuum drainage pipeline.
Background technology
Low-pressure drainage system is a kind of drainage system utilizing the suction gradient in vacuum drainage pipeline to carry out sewage collecting and conveying.Different from gravity drainage or pressure drainage, the conveying of vacuum drainage pipeline to sewage needs to rely on ducted air (gas phase) to the rolling action of sewage (liquid phase), and the sewage of unit volume often needs the air of 2 ~ 12 times of volumes.Most of energy consumption of low-pressure drainage system is also for being used for carrying the air purge system of sewage by these.
" zigzag " longitudinal section is the common paving mode of vacuum drainage pipeline.Zigzag vacuum drainage pipeline is made up of with downward-sloping " descending branch " of certain slope (such as 0.2%) and acclivitous " raising section " subsequently several.Each raising section is made up of two 45 ° of elbows and a straight short tube.Compare descending branch, the flowing of raising section sewage relies on the air of flowing fast to the rolling action of sewage completely, is the important factor in order of vacuum drainage pipeline transfer efficiency.
Raising section sewage and gas flow and there is multiple flow pattern, wherein the highest with slug flow (slug flow) transfer efficiency to sewage.But because the sign degree of surface tension under different pipe diameter of liquid (sewage) is different.Under pipe with small pipe diameter (as 50mm), slug flow is more easily formed (extreme case is as capillarity), and transfer efficiency is higher.Along with caliber increases, slug flow becomes and is not easy to be formed, and transfer efficiency reduces.As caliber comparatively large (as 300mm), gas tends to the annular flow forming " be liquid, centre is gas " through (and non-portable) sewage around.Research in recent years about biphase gas and liquid flow shows: the gas liquid two-phase flow in major path is different from regular channels.When the hydraulic diameter of passage exceedes certain value, due to Taylor instability, in two-phase flow process, taylor bubble cannot stable existence, there will not be slug flow in flow pattern.Meanwhile, scholars also proposed the critical dimension method of discrimination distinguishing major path and regular channels.Wherein, judge whether that the hydraulic diameter of the critical dimension and passage that can form slug flow exists relation.It is important to note that when other conditions such as flow media are constant, when the hydraulic diameter of passage increases, slug flow becomes and is not easily formed, otherwise is more easily formed.
In fact, consider based on factors such as efficiency, the caliber of conventional vacuum drainage pipe is generally not more than 300mm, otherwise transfer efficiency can be significantly less than the situation of comparatively pipe with small pipe diameter (being less than 200mm).But consider for the pressure loss, certain diameter vacuum drainage pipeline can carry the flow of sewage to be limited.Such as, China specification CECS316-2012 specifies that the service population of the vacuum drainage pipeline of DN250 caliber is 3000 people to the maximum.And in practical application, in order to carry the sewage of more large discharge, existing method is with many vacuum drainage pipelines, this needs more multitube material, wider pipe trench, ultimately increases construction investment and maintenance cost.
Therefore, how designing a kind of brand-new drain pipeline structure, improve the sewage conduct conveying capacity that caliber is greater than 200mm, is the problem that those skilled in the art's letter need solve.
Summary of the invention
The object of the invention is, for overcoming above-mentioned the deficiencies in the prior art, to provide a kind of gas-liquid two-phase raising section of vacuum drainage pipeline.Two raising sections provided by the present invention, by changing deformation section and the structure recovering section, achieve the high-efficient dirt exhausting of more than 200mm vacuum drainage pipeline.
In order to reach above-mentioned purpose, the present invention adopts following technical scheme:
A gas-liquid two-phase raising section for vacuum drainage pipeline, comprising:
There is the deformation section of arrival end and the port of export;
There is the ascent stage of arrival end and the port of export;
There is the recovery section of arrival end and the port of export;
Wherein, the port of export of deformation section is connected with the arrival end of ascent stage, and the port of export of ascent stage is connected with the entrance recovering section;
The described ascent stage is for tilting upward setting, the shape of arbitrary ascent stage section perpendicular to ascent stage center line is identical, and the particle diameter of entrained solid particle in the sewage that passes through of the vacuum valve that the sewage passed through from the ascent stage, the particle diameter of entrained solid particle is not less than the vacuum drainage pipeline be connected with described deformation section arrival end; Ascent stage perimeter value square be greater than 4 times of pis with the ratio of area value.
Preferably, the sectional area of described deformation section from arrival end to the port of export is identical.
Preferably, the sectional area of described recovery section from arrival end to the port of export is identical.
Preferably, the arrival end of described deformation section is identical with the cross section of the port of export recovering section.
Preferably, the port of export of described deformation section is identical with the cross section of the arrival end recovering section.
Preferably, the bottom of the described recovery section port of export is lower than the bottom 0.6*d of arrival end recovering section, and d is and recovers the diameter of the vacuum drainage pipeline that section is communicated with.
The invention has the beneficial effects as follows:
1, make the two-phase slug flow of sewage and gas more easily be formed, the transfer efficiency of the vacuum drainage pipeline of comparatively Large Diameter Pipeline (as 200mm ~ 300mm) can be improved.
2, the hydraulics that the two-phase slug flow forming sewage and gas is formed, expands the caliber scope of application of existing vacuum drainage pipeline, makes the transfer efficiency of the vacuum drainage pipeline of more Large Diameter Pipeline (being greater than 300mm) similar to compared with pipe with small pipe diameter.
3, the present invention and existing vacuum drainage pipeline completely compatible, can be connected with existing pipeline easily.
Accompanying drawing illustrates:
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only section Example of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is structural representation of the present invention;
Fig. 2 is application state figure of the present invention;
Fig. 3 is the structural representation of one embodiment of the present of invention;
Fig. 4 is the schematic diagram of flow section A and G in one embodiment of the present of invention;
Fig. 5 is the schematic diagram of flow section B and F in one embodiment of the present of invention;
Fig. 6 is the schematic diagram of flow section C, D and E in one embodiment of the present of invention.
In figure, 1. deformation section, 2. ascent stage, 3. recover section, 4. vacuum drainage pipeline.
Detailed description of the invention:
Embodiment 1: a kind of gas-liquid two-phase raising section of vacuum drainage pipeline, comprising:
There is the deformation section 1 of arrival end and the port of export;
There is the ascent stage 2 of arrival end and the port of export;
There is the recovery section 3 of arrival end and the port of export;
Wherein, the port of export of deformation section 1 is connected with the arrival end of ascent stage 2, and the port of export of ascent stage 2 is connected with the entrance recovering section 3;
The described ascent stage 2 is for tilting upward setting, the shape of arbitrary ascent stage section perpendicular to ascent stage 2 center line is identical, and the particle diameter of entrained solid particle in the sewage that passes through of the vacuum valve that the sewage passed through from the ascent stage 2, the particle diameter of entrained solid particle is not less than the vacuum drainage pipeline 4 be connected with described deformation section 1 arrival end, to ensure that the dirt of the system of entering can not block; Ascent stage 2 perimeter value square be greater than 4 times of pis (i.e. ascent stage 2 wetted perimeter perimeter value square be greater than 4 times of pis with the ratio of wet cross-sectional value) with the ratio of area value.
The sectional area of described deformation section 1 from arrival end to the port of export is identical.
The sectional area of described recovery section 3 from arrival end to the port of export is identical.
The arrival end of described deformation section 1 is identical with the cross section of the port of export recovering section.
The port of export of described deformation section 1 is identical with the cross section of the arrival end recovering section.
The bottom of described recovery section 3 port of export is lower than the bottom 0.6*d of arrival end recovering section 3, and d is and recovers the diameter of the vacuum drainage pipeline 4 that section 3 is communicated with.
In this programme, the sectional area of the flow section of described deformation section 1 does not reduce, and shape changes gradually, makes: the wetted perimeter of flow section increases gradually, hydraulic diameter reduces gradually.In the exit of described deformation section 1, the shape of flow section be finally changed to the shape identical with the entrance of described ascent stage 2 (this shape can by oval, avette, oval hole shape or other interior smooth, by the particle diameter of entrained solid particle in sewage be not less than connection low-pressure drainage system vacuum valve by the particle diameter of entrained solid particle in sewage, girth square be greater than the shape of 4 times of pis with area ratio).
The entrance of described recovery section 3 is be of similar shape with the outlet of described ascent stage 2.On drainage flow direction, the sectional area of the flow section of described recovery section 3 does not reduce, and shape changes gradually, makes: the wetted perimeter of flow section reduces gradually, hydraulic diameter increases gradually.In the exit of described recovery section 3, the shape of flow section and the circle of downstream vacuum drainage pipe formed objects.
Operating principle of the present invention is: at described deformation section 1, by the change of flow section shape on flow direction, increase the wetted perimeter of flow section, reduce the hydraulic diameter of flow section, form the hydraulics of the two-phase slug flow formation being beneficial to sewage and gas, reach and improve the object of gas to the raising efficiency of sewage in the described ascent stage 2.
As shown in Figure 2: for adopting the zigzag vacuum drainage pipeline schematic diagram of raising section of the present invention.The present invention and existing vacuum drainage pipeline completely compatible, can be connected with existing pipeline easily.
As shown in Figure 3: be the longitudinal plane structure schematic diagram of one embodiment of the present of invention, for pipe diameter, (be designated as d) is the vacuum drainage pipeline of 250mm.The inwall in deformation section ABC cross section is level and smooth curved surface, its entrance and upstream vacuum drainage pipe tangent, outlet is tangent with the entrance of ascent stage.The upper and lower wall of longitudinal section of deformation section ABC is smoothed curve, and radius of curvature is not less than d.The inwall recovering section EFG is also level and smooth curved surface, and its outlet is tangent with downstream vacuum drainage pipe 4, and outlet is tangent with the outlet of ascent stage 1.Preferably be chosen as, the upper and lower wall recovering section EFG longitudinal section is smoothed curve, and radius of curvature is not less than d.
Preferably being chosen as, recovering the bottom of section 3 end lower than recovering the bottom 0.6*d of section 3 origin or beginning to prevent sewage backflow.
As the schematic diagram that Fig. 4 is flow section A and G part in the present embodiment, flow section is circular, and diameter is 250mm, and sectional area is 0.049m
2, wetted perimeter is 0.785m, and hydraulic diameter is 250mm.
Fig. 5 is the schematic diagram of flow section B and F in the present embodiment, and flow section is oval, and sectional area is 0.049m
2, wetted perimeter is 0.834m, and hydraulic diameter is 235mm (hydraulic diameter=4* section area/wetted perimeter length).
Fig. 6 is the schematic diagram of flow section C, D and E in the present embodiment, and flow section is oval, and sectional area is 0.049m
2, wetted perimeter is 1.072m, and hydraulic diameter is 183mm.This means, based on existing gas-liquid two-phase theory, although the diameter of the vacuum drainage pipeline be connected with described raising section is 250mm, form the ability aspect of slug flow from biphase gas and liquid flow, described raising section and diameter are that the pipeline of 183mm is similar to, and area of passage does not reduce.
After have employed said structure, this programme, by changing deformation section and the structure recovering section, achieves the high-efficient dirt exhausting of more than 200mm vacuum drainage pipeline.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a gas-liquid two-phase raising section for vacuum drainage pipeline, is characterized in that, comprising:
There is the deformation section of arrival end and the port of export;
There is the ascent stage of arrival end and the port of export;
There is the recovery section of arrival end and the port of export;
Wherein, the port of export of deformation section is connected with the arrival end of ascent stage, and the port of export of ascent stage is connected with the entrance recovering section;
The described ascent stage is for tilting upward setting, the shape of arbitrary ascent stage section perpendicular to ascent stage center line is identical, and the particle diameter of entrained solid particle in the sewage that passes through of the vacuum valve that the sewage passed through from the ascent stage, the particle diameter of entrained solid particle is not less than the vacuum drainage pipeline be connected with described deformation section arrival end; Ascent stage perimeter value square be greater than 4 times of pis with the ratio of area value;
The sectional area of the flow section of described deformation section does not reduce, and shape changes gradually, makes: the wetted perimeter of flow section increases gradually, hydraulic diameter reduces gradually;
The sectional area of the flow section of described recovery section does not reduce, and shape changes gradually, makes: the wetted perimeter of flow section reduces gradually, hydraulic diameter increases gradually.
2. the gas-liquid two-phase raising section of vacuum drainage pipeline according to claim 1, is characterized in that, the sectional area of described deformation section from arrival end to the port of export is identical.
3. the gas-liquid two-phase raising section of vacuum drainage pipeline according to claim 2, is characterized in that, the sectional area of described recovery section from arrival end to the port of export is identical.
4. the gas-liquid two-phase raising section of vacuum drainage pipeline according to claim 2, is characterized in that, the arrival end of described deformation section is identical with the cross section of the port of export recovering section.
5. the gas-liquid two-phase raising section of vacuum drainage pipeline according to claim 3, is characterized in that, the port of export of described deformation section is identical with the cross section of the arrival end recovering section.
6. the gas-liquid two-phase raising section of the vacuum drainage pipeline according to any one of claim 1-5, is characterized in that, the bottom of the described recovery section port of export is lower than the bottom 0.6*d of arrival end recovering section, and d is and recovers the diameter of the vacuum drainage pipeline that section is communicated with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410724834.7A CN104452944B (en) | 2014-12-02 | 2014-12-02 | A kind of gas-liquid two-phase raising section of vacuum drainage pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410724834.7A CN104452944B (en) | 2014-12-02 | 2014-12-02 | A kind of gas-liquid two-phase raising section of vacuum drainage pipeline |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104452944A CN104452944A (en) | 2015-03-25 |
| CN104452944B true CN104452944B (en) | 2016-03-16 |
Family
ID=52899637
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410724834.7A Active CN104452944B (en) | 2014-12-02 | 2014-12-02 | A kind of gas-liquid two-phase raising section of vacuum drainage pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104452944B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109733419A (en) * | 2019-02-15 | 2019-05-10 | 吕行 | A kind of sealing system that vacuum pipe traffic is out of the station |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2017188B (en) * | 1978-03-20 | 1983-01-19 | Burton Mech Contractors | Vacuum sewage system |
| EP0444646A2 (en) * | 1990-02-28 | 1991-09-04 | Ebara Corporation | Laying structure for vacuum sewer pipe of vacuum sewage collecting system |
| EP0701030A1 (en) * | 1994-09-03 | 1996-03-13 | Roediger Anlagenbau GmbH | Vacuum drainage system |
| JPH08319662A (en) * | 1995-05-25 | 1996-12-03 | Sekisui Chem Co Ltd | Water block preventive structure of vacuum type sewarage |
| CN101549694A (en) * | 2008-03-31 | 2009-10-07 | 谢建新 | Transport system and producing method of sub-vacuum duct |
| CN101942860A (en) * | 2010-10-22 | 2011-01-12 | 山东华腾环保科技有限公司 | Sewage collecting and discharging device |
| CN202273312U (en) * | 2011-10-07 | 2012-06-13 | 山东华腾环保科技有限公司 | Vacuum drainage system for draining rainwater of urban underpass road |
-
2014
- 2014-12-02 CN CN201410724834.7A patent/CN104452944B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2017188B (en) * | 1978-03-20 | 1983-01-19 | Burton Mech Contractors | Vacuum sewage system |
| EP0444646A2 (en) * | 1990-02-28 | 1991-09-04 | Ebara Corporation | Laying structure for vacuum sewer pipe of vacuum sewage collecting system |
| EP0701030A1 (en) * | 1994-09-03 | 1996-03-13 | Roediger Anlagenbau GmbH | Vacuum drainage system |
| JPH08319662A (en) * | 1995-05-25 | 1996-12-03 | Sekisui Chem Co Ltd | Water block preventive structure of vacuum type sewarage |
| CN101549694A (en) * | 2008-03-31 | 2009-10-07 | 谢建新 | Transport system and producing method of sub-vacuum duct |
| CN101942860A (en) * | 2010-10-22 | 2011-01-12 | 山东华腾环保科技有限公司 | Sewage collecting and discharging device |
| CN202273312U (en) * | 2011-10-07 | 2012-06-13 | 山东华腾环保科技有限公司 | Vacuum drainage system for draining rainwater of urban underpass road |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104452944A (en) | 2015-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104452944B (en) | A kind of gas-liquid two-phase raising section of vacuum drainage pipeline | |
| CN203281085U (en) | Water treatment sedimentation equipment | |
| CN200993301Y (en) | Steam filter | |
| CN117646649A (en) | Positive and negative pressure combined drainage device and method for double-layer casing pipe of gas extraction drilling hole | |
| CN105926733A (en) | Telescopic sewer pipeline filter | |
| CN103542159A (en) | Air evacuation valve | |
| CN204779025U (en) | A anaerobism device for waste water treatment | |
| CN204385857U (en) | A kind of gas-liquid two-phase raising section of vacuum drainage pipeline | |
| CN105672349A (en) | Cascade siphon device and cascade siphon method for preventing air accumulation in siphon tubes with low water head difference | |
| CN210662311U (en) | Pressure reducing device of dissolved acetylene pressure vessel | |
| CN204114448U (en) | Water inlet increaser structure | |
| CN108130948B (en) | Pressure flow water inlet runner system suitable for deep underground drainage lifting pump station | |
| CN106957084A (en) | From excessive type graphene oil-contained waste water treatment device | |
| CN107619125B (en) | Hydraulic regulation and control circulating water deoxygenation and scale removal integrated equipment and method | |
| CN104863252B (en) | A kind of Archimedian screw grizzly bar bottom rectifying method and integrated pump station thereof | |
| CN215195544U (en) | High-efficient sedimentation tank pipe chute | |
| CN211486659U (en) | Advection precipitation water-collecting device | |
| CN104315295B (en) | Water Inlet Expanding Pipe Structure and Pumping Station Rectification Method | |
| CN211204521U (en) | Different attitude building materials condensation divides liquid board | |
| CN210278368U (en) | Dense jar | |
| CN207553457U (en) | A kind of dewatering in siphon type standpipe | |
| CN104254378A (en) | Wastewater treatment plant | |
| CN207813649U (en) | One kind being used for gas pumping automatic water drainage device | |
| CN223076551U (en) | Rhombic vortex water pipe | |
| US20130315668A1 (en) | Building drainage system pipes with improved performance at low flow |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 250101 Century Avenue, Ji'nan high tech Zone, Shandong, No. 3666 Patentee after: SHANDONG CRRC HUATENG ENVIRONMENT Co.,Ltd. Address before: Room 250101 A401 of Shandong province science and Technology Park of Ji'nan high tech Zone Shun Road No. 750 University Patentee before: Shandong Huateng Environmental Protection Automation Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230216 Address after: 215557 Zhengwen Road, Yushan High-tech Industrial Park, Changshu, Suzhou, Jiangsu Province Patentee after: Jiangsu CRRC Huateng Environmental Protection Technology Co.,Ltd. Address before: 250101 No. 3666 Century Avenue, Jinan High-tech Zone, Shandong Province Patentee before: SHANDONG CRRC HUATENG ENVIRONMENT Co.,Ltd. |