CN115745077B - Spiral gravity oil-water separator structure - Google Patents
Spiral gravity oil-water separator structure Download PDFInfo
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- CN115745077B CN115745077B CN202211514031.XA CN202211514031A CN115745077B CN 115745077 B CN115745077 B CN 115745077B CN 202211514031 A CN202211514031 A CN 202211514031A CN 115745077 B CN115745077 B CN 115745077B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 65
- 230000005484 gravity Effects 0.000 title claims abstract description 30
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 230000002265 prevention Effects 0.000 claims abstract description 10
- 108091006146 Channels Proteins 0.000 claims description 62
- 235000019198 oils Nutrition 0.000 claims description 56
- 239000007788 liquid Substances 0.000 claims description 7
- 235000019476 oil-water mixture Nutrition 0.000 claims description 7
- 230000008676 import Effects 0.000 claims description 4
- 102000010637 Aquaporins Human genes 0.000 claims description 3
- 108010063290 Aquaporins Proteins 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims 1
- 238000002156 mixing Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- XURIQWBLYMJSLS-UHFFFAOYSA-N 1,4,7,10-tetrazacyclododecan-2-one Chemical compound O=C1CNCCNCCNCCN1 XURIQWBLYMJSLS-UHFFFAOYSA-N 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
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- Removal Of Floating Material (AREA)
Abstract
The invention aims to provide a spiral gravity oil-water separator structure which comprises a box body, wherein an inlet channel is formed in the box body, an oil collecting disc, an oil baffle plate and a water collecting disc are arranged in the box body, an oil discharge outlet and a drain pipe are arranged outside the box body, a cyclone plate, a spiral separation channel and a bottom arc cone are also arranged in the box body, the cyclone plate is fixedly arranged on the inner wall surface of the inlet channel, the spiral separation channel is arranged on the outer side of the inlet channel, and the bottom arc cone is arranged at the bottom of the box body. According to the invention, the swirl plate is added in the inlet pipeline, and the arc cone is arranged at the bottom of the inlet to reduce mixing and secondary flow in the channel and enhance the gravity effect; the backflow prevention plate is added in the spiral channel, backflow of an outlet of the spiral channel is reduced, non-uniformity of an outlet face is reduced, and strong backflow is avoided to bring oil drops into water from an oil-water interface to a certain extent. Compared with the prior art, the method can effectively reduce the mixing in the channel and improve the separation efficiency.
Description
Technical Field
The invention relates to an oil-water separator, in particular to a gravity oil-water separator.
Background
The problem of pollution of ships to marine environments is becoming increasingly prominent due to the annual increase in marine transportation and the increase in the total tonnage of the ship, and in marine pollution caused by ships, the pollution of oil-containing sewage of ships is particularly prominent. The oily sewage of the ship is directly discharged into the sea without treatment, and serious pollution is caused. However, some of the vessels are equipped with oil-water separators according to the international regulations, but the oil-water separators are not used in the discharge process, but are directly discharged into the sea through bypass pipelines, and the main domestic ports have vessel oil-sewage receiving facilities with sufficient capacity, but are rather unwilling to receive and treat vessel oil-containing sewage. The main reason for this is that most ships and harbours have low efficiency and long oil-water separation time. Therefore, the existing oil-water separator is optimized, so that the ship oil sewage treatment technology and the port receiving efficiency are improved, and the pollution of the ship oil sewage to the marine environment can be effectively prevented.
The gravity oil-water separator is a device for separating oil from water, and the principle is mainly to separate the oil according to the density difference of the water and the oil. Under the action of gravity, because of the different densities of oil and water, single oil particles float upwards and separate under the action of the density difference, so that an oil phase and a water phase with a certain proportion are formed. When the gravity method is used for separating the oily sewage, the separation efficiency of oil drops in the oily sewage is directly proportional to the floating speed and the floating area of the oil drops, inversely proportional to the treatment capacity of the separation equipment, and irrelevant to the height of the oil-water separation equipment and the floating time of the oil drops, which is the well-known shallow pool theory. Serious vortex and backmixing phenomenon commonly exist in the existing spiral gravity oil-water separator, and oil drops separated by the vortex are lifted up again to enter water due to backmixing caused by the vortex, mixed with the water and discharged together with the water, so that the separation effect of the oil-water separator is reduced. In addition, in order to reduce the floating height of oil drops, the floating area of the oil drops is enlarged, so that the oil-water separator has a complex structure and a large volume. But has simple and light structure and is difficult to achieve good separation effect.
Disclosure of Invention
The invention aims to provide a spiral gravity oil-water separator structure capable of effectively improving oil-water separation effect and stability.
The purpose of the invention is realized in the following way:
The invention relates to a spiral gravity oil-water separator structure, which comprises a box body, wherein the box body is provided with an inlet channel, an oil collecting disc, an oil baffle plate and a water collecting disc are arranged in the box body, an oil discharge outlet and a drain pipe are arranged outside the box body, and the spiral gravity oil-water separator structure is characterized in that: still be provided with whirl board, spiral separation passageway, bottom arc cone in the box, the whirl board setting is fixed on the internal face of import passageway, and spiral separation passageway sets up in the outside of import passageway, and bottom arc cone sets up the bottom at the box.
The invention may further include:
1. The spiral through separation channel comprises sub-channels, each sub-channel comprises a backflow prevention plate and two guide plates, and the lower ends of the backflow prevention plates are fixed on the outer sides of the inlet channels.
2. The whole reverse flow preventing plate is of an inverted cone structure, the upper end of the reverse flow preventing plate is flush with the upper end of the spiral channel, and the ratio of the inner diameter of the inlet channel to the diameter of the upper end of the inverted cone to the height of the inverted cone is 3:15:11.
3. The center axis of the bottom arc cone coincides with the center axis of the inlet channel, the bottom radius of the bottom arc cone coincides with the outer diameter of the inlet channel, the top is a semicircle, the side wall is arc-shaped, and the ratio of the diameter of the semicircle to the height of the bottom arc cone to the diameter of the side wall of the bottom arc cone to the diameter of the bottom arc cone is 1:9:18:16.
4. The swirl plate comprises swirl units which are uniformly distributed in the inlet channel, each swirl unit rotates by 45 degrees, and the ratio of the width of the swirl unit, the radius of the inlet channel and the length of the swirl unit is 1:2:8.
5. The oil-water mixture enters an inlet channel, water separated from oil in the spiral channel is blocked by an oil baffle plate and flows downwards, the liquid level rises along with the increase of the water, and finally enters a water collecting disc and is discharged through a drain pipe; when the oil is discharged, the drain pipe is closed, water is injected into the box body, the liquid level rises to the oil collecting disc, and the oil is discharged from the oil flowing port after entering the oil collecting disc.
The invention has the advantages that: according to the invention, the swirl plate is added in the inlet pipeline, and the arc cone is arranged at the bottom of the inlet to reduce mixing and secondary flow in the channel and enhance the gravity effect; the backflow prevention plate is added in the spiral channel, backflow of an outlet of the spiral channel is reduced, non-uniformity of an outlet face is reduced, and strong backflow is avoided to bring oil drops into water from an oil-water interface to a certain extent. Compared with the prior art, the method can effectively reduce the mixing in the channel and improve the separation efficiency.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a top view of the present invention with the cover plate removed;
FIG. 3 is a cross-sectional view of section A-A of FIG. 2;
FIG. 4 is a schematic view of the structure within the spiral channel and the inlet channel;
FIG. 5 is an enlarged schematic view of the position B in FIG. 4;
FIG. 6 is a schematic view of the structure of the cyclone plate in the inlet channel.
Detailed Description
The invention is described in more detail below, by way of example, with reference to the accompanying drawings:
Referring to fig. 1 to 6, the structure of the spiral gravity oil-water separator of the present invention comprises a tank body 4, an inlet channel 5, a cover plate 6, an oil collecting disc 7, an oil baffle 8, a drain pipe 9 and a spiral separation channel 10. Wherein the inlet channel 5 comprises a cyclone plate 2, the bottom of the box body 4 comprises an arc cone 3, the oil collecting disc 7 comprises an oil discharging outlet 13, the oil baffle 8 comprises a water collecting disc 11, and the spiral separation channel 10 comprises a backflow preventing plate 1 and a guide plate 12.
The cyclone plate 2 is positioned at the inner side of the inlet channel 5 of the spiral gravity oil-water separator and is fixed on the inner wall surface of the inlet channel 5.
The swirl plate 2 is composed of eight small units, each identical small unit is uniformly distributed in the inlet channel 5, each rotation is 45 degrees, and the ratio of the width of the swirl plate, the radius of the inlet channel and the length of the swirl plate is 1:2:8, the proportion and all the dimension values can be slightly adjusted according to the actual situation.
The arc cone 3 is arranged at the bottom of the spiral gravity oil-water separator box 4, and the central axis of the cone coincides with the central axis of the inlet channel 5.
The radius of the bottom of the arc-shaped cone 3 is consistent with the outer diameter of the inlet channel, the top is a semicircle, the side wall is arc-shaped, and the size ratio of the diameter of the semicircle, the height of the cone, the diameter of the side wall surface of the cone and the diameter of the bottom surface of the cone is 1:9:18:16, the ratio and all size values can be adjusted slightly according to the actual situation.
The spiral through separation channel 10 is composed of 8 sub-channels, each comprising one backflow prevention plate 1 and two flow guide plates 12.
The lower end of the backflow prevention plate 1 is fixed on the outer side of the inlet channel 5 of the spiral gravity oil-water separator, namely, on one side of the spiral channel 10.
The whole reverse flow preventing plate 1 is of an inverted cone structure, the upper end of the reverse flow preventing plate is flush with the upper end of the spiral channel, and the ratio of the inner diameter of the inlet channel 5 to the diameter of the upper end of the cone to the height of the cone is 3:15: the ratio and all size values can be adjusted slightly according to the actual situation.
Fig. 1 is a schematic view of the structure of the present invention, wherein water flows out of the drain pipe 9 after the oil-water mixture enters from the inlet channel 5 and is separated, and the oil is discharged from the oil discharge outlet 13.
Fig. 2 is a top view of the invention with the cover plate 6 removed, showing in detail the relative positions of the swirl plate 2, the bottom arc cone 3 and the anti-backflow plate 1 in the spiral gravity oil-water separator, the three structures being concentrated near the inlet channel 5. The cyclone plate 2 is arranged on the inner wall surface of an inlet channel 5 of the spiral gravity oil-water separator, the arc-shaped cone 3 at the bottom and the cyclone plate 2 are positioned at the same vertical position, the cyclone plate is arranged on a bottom box 4, and the backflow preventing plate 1 is arranged on the outer wall surface of the inlet channel 5.
FIG. 3 is a cross-sectional view of FIG. 2, in which the oil-water mixture flows in from the inlet pipe, through the swirl plate 2, the rotation in the inlet pipe is more sufficient, the swirl plate 2 can effectively reduce the speed of the oil-water mixture impacting the bottom due to gravity, then impacting the bottom arc cone 3, the arc cone 3 can solve the reflux problem, and the stagnation area generated by the impact of the fluid on the bottom wall is avoided, thus enhancing the gravity effect, and the oil-water mixture is separated for the first time mainly by gravity. Then enter the spiral channel 10, the spiral channel 10 plays a role in centrifugation, meanwhile, the small guide plates 12 in the spiral channel 10 have the functions of guiding and reducing mixing, the mixture is separated for the second time, the flowing fluid flows towards the outer wall of the inlet pipe and flows back, the backflow prevention plate 1 can effectively reduce backflow of the outlet of the spiral channel 10, unevenness of the outlet surface is reduced, secondary mixing between oil and water is reduced, and strong backflow is avoided to carry oil drops back into water from an oil-water interface to a certain extent.
The liquid level of the research equipment is lower than the top end of the oil baffle plate 8 at ordinary times, an oil-water mixture enters the center of the flow channel of the equipment from the water inlet at the upper part through the sundry filtering device, enters the box body 4 through the flow channel, water after oil-water separation in the spiral channel 10 is blocked by the oil baffle plate 8 and flows downwards, the liquid level gradually rises along with the increase of the water, and finally enters the water collecting disc 11 to be discharged through the drain pipe 9. The oil gathers on the upper surface, and along with the increase of working time, the water outlet channel is closed, water is injected into the box body 4, the liquid level rises to the oil collecting disc 7, and the oil is discharged from the oil flowing port 13 after entering the oil collecting disc 7.
In combination with fig. 4 and 5, the structure of the cyclone plate 2 of the invention is positioned in the inlet pipeline of the spiral gravity oil-water separator, 8 cyclone plates 2 are uniformly distributed in the inlet pipeline, and the arc cone 3 is positioned at the bottom of the inlet pipeline. The swirl plate 2 is fixedly connected to the inner wall of the inlet channel 5, and the backflow prevention plate 1 is arranged on the outer wall surface of the inlet channel and distributed in each spiral channel 10.
FIG. 6 shows in detail the structure of the swirling plate of the present invention and its relative position in the inlet duct
Compared with the prior art, the invention has the advantages that:
First, the addition of small swirl plates 2 in the inlet duct can control centrifugal force while enhancing swirl flow to effectively mitigate secondary flow in the spiral channel 10. Secondly, the addition of the small cone 3 at the bottom can reduce the mixing caused by the impact of the bottom of the inlet channel and enhance the gravity effect. Without the addition of small swirl plates 2 to the inlet duct, the enhanced gravitational action of the bottom arcuate cone 3 would cause higher velocity fluid to impinge on the side walls of the spiral channel 10, causing a strong secondary flow. Finally, the backflow-simulating plate 12 added in the spiral channel 10 reduces backflow at the outlet of the spiral channel 10 and reduces unevenness at the outlet surface, which reduces secondary mixing between oil and water, and avoids strong backflow to bring oil drops into water from the oil-water interface to a certain extent, and the backflow-preventing plate 1 can reduce backflow area and unevenness at the outlet of the spiral channel 10. Compared with the prior art, the invention reduces blending and enhances separation effect.
Claims (6)
1. The utility model provides a spiral gravity oil water separator structure, includes the box, and the box sets up inlet channel, sets up oil collecting tray, oil baffle, water collecting tray in the box, and the box outside sets up oil extraction export and drain pipe, characterized by: still be provided with whirl board, spiral separation passageway, bottom arc cone in the box, the whirl board setting is fixed on the internal face of import passageway, and spiral separation passageway sets up in the outside of import passageway, and bottom arc cone sets up the bottom at the box.
2. The spiral gravity oil-water separator structure according to claim 1, characterized in that: the spiral through separation channel comprises sub-channels, each sub-channel comprises a backflow prevention plate and two guide plates, and the lower ends of the backflow prevention plates are fixed on the outer sides of the inlet channels.
3. The spiral gravity oil-water separator structure according to claim 2, characterized in that: the whole reverse flow preventing plate is of an inverted cone structure, the upper end of the reverse flow preventing plate is flush with the upper end of the spiral channel, and the ratio of the inner diameter of the inlet channel to the diameter of the upper end of the inverted cone to the height of the inverted cone is 3:15:11.
4. The spiral gravity oil-water separator structure according to claim 1, characterized in that: the center axis of the bottom arc cone coincides with the center axis of the inlet channel, the bottom radius of the bottom arc cone coincides with the outer diameter of the inlet channel, the top is a semicircle, the side wall is arc-shaped, and the ratio of the diameter of the semicircle to the height of the bottom arc cone to the diameter of the side wall of the bottom arc cone to the diameter of the bottom arc cone is 1:9:18:16.
5. The spiral gravity oil-water separator structure according to claim 1, characterized in that: the swirl plate comprises swirl units which are uniformly distributed in the inlet channel, each swirl unit rotates by 45 degrees, and the ratio of the width of the swirl unit, the radius of the inlet channel and the length of the swirl unit is 1:2:8.
6. The spiral gravity oil-water separator structure according to claim 1, characterized in that: the oil-water mixture enters an inlet channel, water separated from oil in the spiral channel is blocked by an oil baffle plate and flows downwards, the liquid level rises along with the increase of the water, and finally enters a water collecting disc and is discharged through a drain pipe; when the oil is discharged, the drain pipe is closed, water is injected into the box body, the liquid level rises to the oil collecting disc, and the oil is discharged from the oil flowing port after entering the oil collecting disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211514031.XA CN115745077B (en) | 2022-11-29 | 2022-11-29 | Spiral gravity oil-water separator structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211514031.XA CN115745077B (en) | 2022-11-29 | 2022-11-29 | Spiral gravity oil-water separator structure |
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| CN115745077A CN115745077A (en) | 2023-03-07 |
| CN115745077B true CN115745077B (en) | 2024-04-19 |
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| CN202211514031.XA Active CN115745077B (en) | 2022-11-29 | 2022-11-29 | Spiral gravity oil-water separator structure |
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|---|---|---|---|---|
| US6171356B1 (en) * | 1998-04-28 | 2001-01-09 | Frank Twerdun | Cyclonic vacuum generator apparatus and method |
| CN103566627A (en) * | 2013-10-30 | 2014-02-12 | 森松(江苏)海油工程装备有限公司 | Oil-water separating device |
| CN203440115U (en) * | 2013-06-27 | 2014-02-19 | 张力钧 | High-efficiency rotational flow air flotation device |
| CN105536297A (en) * | 2016-02-26 | 2016-05-04 | 北京石油化工学院 | Tubular oil-water cyclone separation equipment |
| CN106865673A (en) * | 2017-04-13 | 2017-06-20 | 中国石油大学(华东) | A kind of swirl flow air supporting oil-contained waste water treatment device |
| CN109622251A (en) * | 2019-01-31 | 2019-04-16 | 北京迪威尔石油天然气技术开发有限公司 | A kind of pipe separator |
| CN209085731U (en) * | 2018-12-29 | 2019-07-09 | 新乡航空工业(集团)有限公司 | The high-precision weighing case with separator for meter proof |
| CN210915421U (en) * | 2019-09-06 | 2020-07-03 | 新奥科技发展有限公司 | Dust oil-water separator |
| CN112058508A (en) * | 2020-09-30 | 2020-12-11 | 哈尔滨恒通排水设备制造股份有限公司 | Spiral multi-runner assembly, oil-water separator with spiral multi-runners and implementation method of oil-water separator |
| CN112125420A (en) * | 2020-09-18 | 2020-12-25 | 延长油田股份有限公司 | A novel oil-water separator for oil field water treatment |
-
2022
- 2022-11-29 CN CN202211514031.XA patent/CN115745077B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6171356B1 (en) * | 1998-04-28 | 2001-01-09 | Frank Twerdun | Cyclonic vacuum generator apparatus and method |
| CN203440115U (en) * | 2013-06-27 | 2014-02-19 | 张力钧 | High-efficiency rotational flow air flotation device |
| CN103566627A (en) * | 2013-10-30 | 2014-02-12 | 森松(江苏)海油工程装备有限公司 | Oil-water separating device |
| CN105536297A (en) * | 2016-02-26 | 2016-05-04 | 北京石油化工学院 | Tubular oil-water cyclone separation equipment |
| CN106865673A (en) * | 2017-04-13 | 2017-06-20 | 中国石油大学(华东) | A kind of swirl flow air supporting oil-contained waste water treatment device |
| CN209085731U (en) * | 2018-12-29 | 2019-07-09 | 新乡航空工业(集团)有限公司 | The high-precision weighing case with separator for meter proof |
| CN109622251A (en) * | 2019-01-31 | 2019-04-16 | 北京迪威尔石油天然气技术开发有限公司 | A kind of pipe separator |
| CN210915421U (en) * | 2019-09-06 | 2020-07-03 | 新奥科技发展有限公司 | Dust oil-water separator |
| CN112125420A (en) * | 2020-09-18 | 2020-12-25 | 延长油田股份有限公司 | A novel oil-water separator for oil field water treatment |
| CN112058508A (en) * | 2020-09-30 | 2020-12-11 | 哈尔滨恒通排水设备制造股份有限公司 | Spiral multi-runner assembly, oil-water separator with spiral multi-runners and implementation method of oil-water separator |
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| CN115745077A (en) | 2023-03-07 |
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