CN108675392B - Be used for abluent high efficiency oil slick suction device of oil storage tank efflux - Google Patents
Be used for abluent high efficiency oil slick suction device of oil storage tank efflux Download PDFInfo
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- CN108675392B CN108675392B CN201810287575.4A CN201810287575A CN108675392B CN 108675392 B CN108675392 B CN 108675392B CN 201810287575 A CN201810287575 A CN 201810287575A CN 108675392 B CN108675392 B CN 108675392B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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Abstract
The invention relates to a high-efficiency floating oil suction device for jet cleaning of an oil storage tank. The oil storage device comprises a suction elbow and an annular water-blocking and oil-dredging weir, wherein a suction port of the suction elbow is arranged towards the bottom of an oil storage container, a distance for forming a fluid channel is reserved between the suction port and the bottom of the oil storage container, and the water-blocking and oil-dredging weir is arranged on the outer side of the suction port in a surrounding manner; the water-blocking oil-dredging weir is driven by the driving mechanism to move upwards so as to realize that the water-blocking oil-dredging weir is in a lifting state relative to the bottom of the oil storage container or the water-blocking oil-dredging weir is driven by the driving mechanism to move downwards so as to realize that the water-blocking oil-dredging weir is in a bottom falling state relative to the bottom of the oil storage container. The invention realizes the prior pumping of the upper liquid level, namely the floating oil layer, in the oil storage container through the bottom falling action of the water-blocking and oil-dredging weir, thereby efficiently pumping the floating oil.
Description
Technical Field
The invention belongs to the field of jet cleaning, and particularly relates to a high-efficiency floating oil pumping device for jet cleaning of an oil storage tank.
Background
The most common storage facility for crude oil reserves is the large storage tank, 5 km before 20053The following tanks are mainly, and then 10 ten thousand meters3The above is the main point. Due to the composition and properties of crude oil, the formation of tank bottom sludge is inevitable and is very large (typically 2.5% of the tank volume). Such a large amount of sludge deposits cannot be utilized, which wastes energy and reduces the effective storage capacity, and because the storage tank has a necessary 6-year inspection period, sludge must be removed and the tank wall must be cleaned in due period for inspection and inspection. How to clean and recover the oil sludge is always a difficult engineering problem. The traditional manual cleaning method is eliminated, various mechanical automatic cleaning processes appear in succession, and the jet cleaning process becomes the mainstream of development. The main two cleaning links of the jet cleaning process are oil cleaning and hot water cleaning. During the hot water cleaning stage, the residual oil washed from the tank wall will form a collection at the tank bottom and float on the surface of the oily sewage due to its density being less than that of water, and it is a big problem how to pump out the floating oil with high efficiency. The original suction device is only provided with a flat suction bent pipe, and the position of the pipe orifice away from the bottom of the tank body is manually adjusted during installation, so that time and labor are wasted. And during the pumping operation, because the oil floats on the water surface, most of the liquid pumped out from the pipe orifice is water, only a small amount of floating oil exists, and a large amount of floating oil still remains in the tank and is difficult to pump out.
Disclosure of Invention
In order to solve the technical problem, the invention provides a high-efficiency floating oil pumping device for jet cleaning of an oil storage tank.
In order to realize the purpose of the invention, the invention adopts the following technical scheme:
a high-efficiency floating oil suction device for jet cleaning of an oil storage tank comprises a suction elbow and an annular water-blocking and oil-dredging weir, wherein a suction opening of the suction elbow is arranged towards the bottom of an oil storage container, a space for forming a fluid channel is reserved between the suction opening and the bottom of the oil storage container, and a gap of the water-blocking and oil-dredging weir is enclosed outside the suction opening; the water-blocking oil-dredging weir is driven by the driving mechanism to move upwards so as to realize that the water-blocking oil-dredging weir is in a lifting state relative to the bottom of the oil storage container or moves downwards so as to realize that the water-blocking oil-dredging weir is in a bottom falling state relative to the bottom of the oil storage container.
According to the further technical scheme, when the water-blocking and oil-repelling weir is in a bottom-falling state, the upper weir mouth of the water-blocking and oil-repelling weir is slightly lower than the floating oil layer in the oil storage container, the upper weir mouth of the water-blocking and oil-repelling weir is higher than the suction port, and the height difference between the upper weir mouth of the water-blocking and oil-repelling weir and the suction port is greater than 20 mm.
According to a further technical scheme, the inner diameter of the water-blocking and oil-repelling weir is D1The inner diameter of the suction opening is D2And the relation between the water-blocking and oil-dredging weir and the suction port meets the following requirements: 1.25. D2≤D1≤4·D2。
According to a further technical scheme, the edge of the suction port is provided with a support leg which extends to the bottom of the oil storage container and is used for supporting the suction elbow.
According to a further technical scheme, the driving mechanism comprises a pneumatic telescopic cylinder, a lever and a vertically arranged connecting rod, one end of the lever is connected with the pneumatic telescopic cylinder, the other end of the lever is hinged to the connecting rod, the pneumatic telescopic cylinder drives the lever to rotate around a fulcrum to achieve that the lever drives the water and oil blocking weir to move upwards or downwards along the axial direction of the suction elbow.
A further technical scheme, be equipped with the manhole door plant on the oil storage container, be equipped with the confession on the manhole door plant the first mounting hole that the lever runs through and the confession the second mounting hole that the suction return bend runs through, first mounting hole is equipped with the installation ear that is used for installing the lever axle on one side, the lever axle constitutes the rotation of lever supports, the lever axle overcoat is equipped with sealed leather cup.
According to a further technical scheme, the outer wall surface of the suction elbow is provided with a mounting ring fixedly connected with the water-blocking and oil-repelling weir, the mounting ring is coaxially arranged with the suction elbow and the water-blocking and oil-repelling weir, and the connecting rod is hinged to the mounting ring.
The invention has the beneficial effects that:
(1) the invention realizes the prior suction of the upper liquid level, namely the floating oil layer, by the bottom falling action of the water-blocking and oil-dredging weir, thereby efficiently sucking the floating oil.
In the same oil cleaning stage, when the liquid in the oil storage container is not obviously layered, the water-blocking and oil-repelling weir is lifted, and the liquid in the oil storage container is directly pumped out from the suction port, so that the efficiency is ensured.
In the hot water cleaning stage, the oil and water are layered due to different specific gravity, the oil floats on the water surface, the water-blocking and oil-dredging weir falls to the bottom of an oil storage container (oil storage tank), and then the oily sewage flows into the weir through the weir port and is pumped out of the tank through the pumping port. Because the water on the lower layer in the oil storage tank is blocked by the water-blocking and oleophobic weir, the flow of the oily water layer on the liquid surface is obviously accelerated, and the surface flow condition of the oily water contained in the tank is greatly better than that of the water-blocking and oleophobic weir when lifted. The oil floating on the water surface flows to the vicinity of the suction port along with the flow of the liquid surface. When the floating oil is pumped out along with the oily sewage in the weir, the floating oil is pumped out of the tank, so that the efficiency of floating oil pumping is greatly improved.
(2) Another core point of the present invention is: and the inner diameters and the heights of the water-blocking and oil-dredging weir and the suction port are selected, and the calculation is carried out according to the suction requirement to complete the matching. When the water-blocking oil-dredging weir is in a bottom falling state, the height of the water-blocking oil-dredging weir is slightly lower than that of the floating oil layer, so that the floating oil layer can smoothly enter the water-blocking oil-dredging weir through an upper weir port of the water-blocking oil-dredging weir and then downwards enter the suction elbow through a suction port. The water-blocking oil-repellentThe relation between the size of the weir and the size of the suction opening satisfies that: 1.25. D2≤D1≤4·D2Thus, efficient suction of the floating oil layer is ensured and the sucked floating oil contains less water.
(3) The support legs on the edge of the suction opening form a support for the suction elbow on the one hand and also facilitate the positioning and installation of the suction elbow relative to the bottom of the oil storage tank on the other hand. When the suction elbow is installed, the support legs directly touch the bottom of the oil storage container, and the support legs enable a channel for fluid to pass through to be formed between the suction opening of the suction elbow and the bottom of the oil storage container, namely floating oil enters the suction elbow through the space between the suction opening and the bottom of the oil storage container and is pumped away.
(4) The invention can realize the automatic action outside the tank, because the cleaning operation environment of the oil storage tank is an inflammable and explosive place and is often accompanied with toxic volatile gas, the construction needs to be closed, the working state of the device in the tank can be changed only by external operation, and the device is not suitable for electric control. Therefore, the invention skillfully realizes the automatic control of the state of the device in the tank by additionally arranging a pneumatic device, namely a pneumatic telescopic cylinder and utilizing the lever principle. The water-blocking and oil-dredging weir is lifted by a driving device consisting of a pneumatic telescopic cylinder, a lever and a connecting rod, so that the realization of high-efficiency floating oil suction and automatic control are completed.
(5) The connecting modes of the lever and the connecting rod and the mounting ring are hinged, and the inner diameter of the water-blocking and oil-dredging weir is in clearance fit with the outer diameter of the suction bent pipe, so that the water-blocking and oil-dredging weir can move up and down outside the tank by operating the lever, a certain coaxiality of the water-blocking and oil-dredging weir and the suction bent pipe is ensured, and the water-blocking and oil-dredging weir can stably fall to the bottom when descending.
(6) The manhole door plate is arranged on a manhole of an oil storage tank, and the suction bent pipe and the lever respectively penetrate through the manhole door plate, so that the control of the water-blocking and oil-draining weir outside the tank is realized.
Drawings
FIG. 1 is a schematic diagram of the invention.
FIG. 2 is a schematic view of the water-and oil-repellent weir in a raised state.
FIG. 3 is a schematic view of a water-blocking and oil-repelling weir in a bottom-falling state.
Fig. 4 is a schematic diagram of the dimension fit of the water-blocking and oil-repelling weir and the suction elbow.
The designations in the drawings have the following meanings:
1-pneumatic telescopic cylinder 2-lever 3-lever shaft 4-manhole door plate 5-connecting rod
6-suction elbow 61-suction port 62-support leg 7-water-blocking oil-dredging weir 8-mounting ring
9-bottom 10-water layer 11-floating oil layer of oil storage container
H1Height H of upper weir crest of water-and oil-repellent weir from liquid level2Height of the water-and oil-repellent weir
H3-the difference in height between the upper weir crest of the water-and oil-repellent weir and the suction mouth
Detailed Description
The technical scheme of the invention is more specifically explained by combining the following embodiments:
as shown in fig. 1: the oil storage device comprises a suction elbow 6 and an annular water and oil blocking weir 7, wherein a suction port 61 of the suction elbow 6 is arranged towards the bottom of an oil storage container, a distance for forming a fluid channel is reserved between the suction port 61 and the bottom of the oil storage container, and a gap of the water and oil blocking weir 7 is arranged outside the suction port 61 in an enclosing manner; the water-blocking and oil-draining weir 7 is driven by the driving mechanism to move upwards so as to realize that the water-blocking and oil-draining weir 7 is in a lifting state relative to the bottom of the oil storage container, or the water-blocking and oil-draining weir 7 is driven by the driving mechanism to move downwards so as to realize that the water-blocking and oil-draining weir 7 is in a bottom falling state relative to the bottom of the oil storage container.
The invention realizes the prior suction of the upper liquid level, namely the floating oil layer, by the lifting and bottom falling actions of the water-blocking and oil-dredging weir 7, thereby efficiently sucking the floating oil.
In the same oil cleaning stage, when the liquid in the oil storage container is not obviously layered, the water-blocking oil-dredging weir 7 is lifted (as shown in figure 2), and the liquid in the oil storage container is directly pumped out from the suction port, so that the efficiency is ensured.
In the hot water cleaning stage, the oil and water are layered due to different specific gravity, the oil floats on the water surface, at this time, the water-blocking and oil-dredging weir falls to the bottom of the oil storage container (oil storage tank) (as shown in fig. 3), and the oily sewage flows into the weir through the upper weir port and is pumped out of the tank through the pumping port 61. Because the water at the lower layer in the oil storage tank is blocked by the water-blocking and oil-dredging weir 7, the flow of the oily water layer on the liquid surface is obviously accelerated, and the surface flow condition of the oily water contained in the tank is greatly better than that of the water-blocking and oil-dredging weir 7 when lifted. The oil floating on the water surface flows toward the vicinity of the suction port 61 as the surface of the liquid flows. When the floating oil passes through the water-blocking oil-dredging weir 7, the floating oil floats on the water surface due to the low density of the floating oil and preferentially flows into the water-blocking oil-dredging weir 7 to form small-scale floating oil aggregation, and the floating oil is sucked out of the tank along with the pumping of the oily sewage in the weir, so that the efficiency of floating oil suction is greatly improved.
As shown in fig. 4: when the water-blocking oil-dredging weir 7 is in a bottom-falling state, the upper weir crest of the water-blocking oil-dredging weir 7 is slightly lower than the floating oil layer in the oil storage container, the upper weir crest of the water-blocking oil-dredging weir 7 is higher than the suction opening 61, and the height difference H between the upper weir crest of the water-blocking oil-dredging weir 7 and the suction opening 613Greater than 20 mm. Therefore, the floating oil layer can smoothly enter the water-blocking oil-dredging weir from the upper weir port of the water-blocking oil-dredging weir 7 and then enter the suction elbow 6 from the suction port 61.
The inner diameter of the water-blocking oil-dredging weir 7 is D1The inner diameter of the suction port 61 is D2The relation between the water-blocking and oil-dredging weir 7 and the suction port 61 meets the following requirements: 1.25. D2≤D1≤4·D2Thus, efficient suction of the floating oil layer is ensured and the sucked floating oil contains less water.
The suction port 61 is provided at its edge with a leg 62 extending toward the bottom of the reservoir and supporting the suction elbow 6. The feet 62 at the edge of the suction opening 61 according to the invention on the one hand form a support for the suction manifold 6 and on the other hand facilitate the positioning of the suction manifold 6 relative to the tank bottom. When the suction elbow 6 is installed, the support leg 62 directly touches the bottom of the oil reservoir, and the support leg 62 allows a passage for fluid to pass between the suction opening of the suction elbow 6 and the bottom of the oil reservoir, i.e. oil slick is drawn through the gap between the suction opening 61 and the bottom of the oil reservoir into the suction elbow 6.
The driving mechanism comprises a pneumatic telescopic cylinder 1, a lever 2 and a vertically arranged connecting rod 5, one end of the lever 2 is connected with the pneumatic telescopic cylinder 1, the other end of the lever 2 is hinged to the connecting rod 5, the pneumatic telescopic cylinder 1 drives the lever 2 to rotate around a fulcrum to realize that the lever 2 drives the water-blocking and oil-dredging weir 7 to move upwards or downwards along the axial direction of the suction elbow pipe 6 through the connecting rod 5. The invention can realize the automatic action outside the tank, because the cleaning operation environment of the oil storage tank is an inflammable and explosive place and is often accompanied with toxic volatile gas, the construction needs to be closed, the working state of the device in the tank can be changed only by external operation, and the device is not suitable for electric control. Therefore, the invention skillfully realizes the automatic control of the state of the device in the tank by additionally arranging a pneumatic device, namely the pneumatic telescopic cylinder 1 and utilizing the lever principle. Namely, the water-blocking and oil-dredging weir 7 is lifted by a driving device consisting of the pneumatic telescopic cylinder 1, the lever 2 and the connecting rod 5, so that the realization of high-efficiency floating oil suction and automatic control thereof are completed.
The outer wall surface of the suction elbow 6 is provided with a mounting ring fixedly connected with the water-blocking and oil-dredging weir 7, the mounting ring is coaxially arranged with the suction elbow 6 and the water-blocking and oil-dredging weir 7, and the connecting rod 5 is hinged with the mounting ring. The connecting modes of the lever 2 and the connecting rod 5 and the mounting ring 8 are hinged, and the inner diameter of the water-blocking and oil-dredging weir 7 is in clearance fit with the outer diameter of the suction bent pipe 6, so that the water-blocking and oil-dredging weir 7 can move up and down outside a tank by operating the lever 2, a certain coaxiality of the water-blocking and oil-dredging weir 7 and the suction bent pipe 6 is ensured, and the water-blocking and oil-dredging weir 7 can stably fall to the bottom when descending.
Be equipped with manhole door plant 4 on the oil storage container, be equipped with the confession on the manhole door plant 4 first mounting hole and the confession that lever 2 runs through the second mounting hole that suction return bend 6 runs through, first mounting hole is equipped with the installation ear that is used for installing lever shaft 3 on one side, lever shaft 3 constitutes lever 2's rotation is supported, 3 overcoat of lever shaft is equipped with sealed leather cup. The manhole door plate 4 is arranged on a manhole of an oil storage tank, the suction bent pipe 6 and the lever 2 respectively penetrate through the manhole door plate 4, and therefore the control of the water-blocking and oil-dredging weir 7 outside the tank is achieved through the pneumatic telescopic cylinder 1.
Claims (6)
1. The utility model provides a be used for abluent high efficiency oil slick suction device of oil storage tank efflux which characterized in that: the oil storage tank comprises a suction elbow (6) and an annular water and oil blocking weir (7), wherein a suction port (61) of the suction elbow (6) is arranged towards the bottom of the oil storage tank, a distance for forming a fluid channel is reserved between the suction port (61) and the bottom of the oil storage tank, and the water and oil blocking weir (7) is arranged outside the suction port (61) in a surrounding mode in a clearance mode; the water-blocking oil-dredging weir (7) is driven by a driving mechanism to move upwards so as to enable the water-blocking oil-dredging weir (7) to be in a lifting state relative to the bottom of the oil storage tank or move downwards so as to enable the water-blocking oil-dredging weir (7) to be in a bottom falling state relative to the bottom of the oil storage tank;
when the water-blocking oil-dredging weir (7) is in a bottom-falling state, the upper weir crest of the water-blocking oil-dredging weir (7) is slightly lower than the floating oil layer in the oil storage tank, the upper weir crest of the water-blocking oil-dredging weir (7) is higher than the suction opening (61), and the height difference between the upper weir crest of the water-blocking oil-dredging weir (7) and the suction opening (61) is greater than 20 mm.
2. A high efficiency float pumping apparatus for jet cleaning of storage tanks as claimed in claim 1 wherein: the inner diameter of the water-blocking and oil-draining weir (7) is D1The inner diameter of the suction port (61) is D2The relation between the water-blocking and oil-dredging weir (7) and the suction port (61) meets the following requirements: 1.25. D2≤D1≤4·D2。
3. A high efficiency float pumping apparatus for jet cleaning of storage tanks as claimed in claim 1 wherein: the edge of the suction opening (61) is provided with a support leg (62) which extends towards the bottom of the oil storage tank and is used for supporting the suction elbow (6).
4. A high efficiency float pumping apparatus for jet cleaning of storage tanks as claimed in claim 1 wherein: actuating mechanism includes pneumatic telescoping cylinder (1), lever (2) and vertical connecting rod (5) of arranging, lever (2) one end is connected with pneumatic telescoping cylinder (1), lever (2) other end with connecting rod (5) are articulated, pneumatic telescoping cylinder (1) drive lever (2) rotate around the fulcrum in order to realize lever (2) drive through connecting rod (5) block water and dredge oily weir (7) along suction return bend (6) axial rebound or move down.
5. The high efficiency float pumping apparatus for jet cleaning of storage tanks of claim 4 wherein: be equipped with manhole door plant (4) on the oil storage tank, be equipped with the confession on manhole door plant (4) first mounting hole and confession that lever (2) run through the second mounting hole that suction return bend (6) run through, first mounting hole is equipped with the installation ear that is used for installing lever axle (3) on one side, lever axle (3) constitute the rotation of lever (2) is supported, lever axle (3) overcoat is equipped with sealed leather cup.
6. The high efficiency float pumping apparatus for jet cleaning of storage tanks of claim 4 wherein: the outer wall surface of the suction bent pipe (6) is provided with a mounting ring (8) fixedly connected with the water-blocking and oil-dredging weir (7), the mounting ring is coaxially arranged with the suction bent pipe (6) and the water-blocking and oil-dredging weir (7), and the connecting rod (5) is hinged to the mounting ring (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810287575.4A CN108675392B (en) | 2018-04-03 | 2018-04-03 | Be used for abluent high efficiency oil slick suction device of oil storage tank efflux |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810287575.4A CN108675392B (en) | 2018-04-03 | 2018-04-03 | Be used for abluent high efficiency oil slick suction device of oil storage tank efflux |
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| Publication Number | Publication Date |
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| CN108675392A CN108675392A (en) | 2018-10-19 |
| CN108675392B true CN108675392B (en) | 2020-07-07 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5303725A (en) * | 1993-02-18 | 1994-04-19 | Kleer-Flo Company | Machine part cleaning apparatus |
| US6021792A (en) * | 1997-09-11 | 2000-02-08 | Petter; Matthew J. | Modular cleaning facility |
| CN101432054A (en) * | 2006-04-27 | 2009-05-13 | 塞梅科公司 | Passive grease trap using separator technology |
| CN102644262A (en) * | 2011-02-17 | 2012-08-22 | 青岛光明环保技术有限公司 | Buoy-type weir oil recovery device |
| CN202730732U (en) * | 2012-08-06 | 2013-02-13 | 清华大学 | Shipborne offshore spilled oil recovering and cleaning equipment |
| CN104153743A (en) * | 2014-06-05 | 2014-11-19 | 敫铁拴 | Oil well cleaning device with sump oil and sewage recycling function |
| CN206955705U (en) * | 2017-04-27 | 2018-02-02 | 中国石油天然气集团公司 | Oil slick aspirator in a kind of oil tank |
-
2018
- 2018-04-03 CN CN201810287575.4A patent/CN108675392B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5303725A (en) * | 1993-02-18 | 1994-04-19 | Kleer-Flo Company | Machine part cleaning apparatus |
| US6021792A (en) * | 1997-09-11 | 2000-02-08 | Petter; Matthew J. | Modular cleaning facility |
| CN101432054A (en) * | 2006-04-27 | 2009-05-13 | 塞梅科公司 | Passive grease trap using separator technology |
| CN102644262A (en) * | 2011-02-17 | 2012-08-22 | 青岛光明环保技术有限公司 | Buoy-type weir oil recovery device |
| CN202730732U (en) * | 2012-08-06 | 2013-02-13 | 清华大学 | Shipborne offshore spilled oil recovering and cleaning equipment |
| CN104153743A (en) * | 2014-06-05 | 2014-11-19 | 敫铁拴 | Oil well cleaning device with sump oil and sewage recycling function |
| CN206955705U (en) * | 2017-04-27 | 2018-02-02 | 中国石油天然气集团公司 | Oil slick aspirator in a kind of oil tank |
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| CN108675392A (en) | 2018-10-19 |
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