CN111298509B - Multistage cylinder oil-water separator - Google Patents
Multistage cylinder oil-water separator Download PDFInfo
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- CN111298509B CN111298509B CN202010092594.9A CN202010092594A CN111298509B CN 111298509 B CN111298509 B CN 111298509B CN 202010092594 A CN202010092594 A CN 202010092594A CN 111298509 B CN111298509 B CN 111298509B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/003—Filters in combination with devices for the removal of liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0217—Separation of non-miscible liquids by centrifugal force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/08—Vortex chamber constructions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/24—Multiple arrangement thereof
- B04C5/28—Multiple arrangement thereof for parallel flow
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/06—Dewatering or demulsification of hydrocarbon oils with mechanical means, e.g. by filtration
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cyclones (AREA)
Abstract
A multi-stage cylinder type oil-water separation device. The pipe fitting comprises a first-stage pipe diameter, a second-stage pipe diameter, a third-stage pipe diameter, a conical joint, a first-stage cover plate type spiral flow passage, a second-stage bracket type spiral flow passage, a third-stage bracket type spiral flow passage and the like; the pipe diameters and cover plate type spiral flow passages of all levels are used for carrying out multi-level separation on the mixed liquid and collecting the oil phase; the water phase moves towards the side wall and is collected by the three-stage drain hole discharging device, and the oil phase is collected by the three-stage oil phase outlet discharging device, so that the multi-stage high-precision separation of the oil-water mixed phase is completed. The oil-water separation device forms multi-stage annular cylinder type oil-water cyclone separation, can realize oil-water multi-stage separation in a pipeline or other connectable devices, respectively collects two phases of oil and water, realizes high-precision real-time separation of the two phases of oil and water, and has no pollution to the environment. The separation efficiency is high.
Description
Technical Field
The invention relates to an oil-water two-phase flow separation device applied to the fields of petroleum and petrochemical industry, environmental protection and chemical industry and the like.
Background
The oil fields in China mostly adopt a water injection development mode, and the stratified water injection has remarkable effects on economic and effective development, continuous high and stable yield, improvement of water drive recovery ratio and the like. With the development of the petroleum industry, the dominant oil fields in China all enter a high water-cut exploitation period, even the water content of some oil wells reaches 98 percent, and the oil wells lose exploitation value and are in a waste well state. But the import rate of crude oil in China exceeds 70 percent, so the method has important significance for oil-water separation of the produced crude oil. At present, the gravity settling method is mainly used for separating the produced liquid. The principle is that the gravity difference exists between the oil phase and the water phase of the partial area, the oil phase with lighter weight floats on the upper layer of the mixed phase through long-time standing and sedimentation by means of gravity, and the water phase with heavier weight is settled on the lower layer of the mixed phase. However, the gravity settling method has the defects of large occupied area of equipment, low separation speed, low separation precision and the like. Therefore, aiming at the existing problems, part of experts and scholars propose to convert the axial speed of the mixed phase into the tangential speed, and the density difference existing between different media is utilized to enable the mixed liquid to generate the centrifugal force which is several tens times of the gravity acceleration, thereby realizing the separation of oil phase and water phase.
Disclosure of Invention
In order to solve the technical problems mentioned in the background technology, the invention provides a multistage oil-water separation device, which can realize oil-water separation in pipelines and various connectable equipment, can realize oil-water separation under different working conditions, improves the oil-water separation efficiency and precision, and has the advantages of high efficiency, small size, high speed and the like.
The technical scheme of the invention is as follows: this kind of multistage cylinder oil water separator, including one-level pipe diameter, second grade pipe diameter and tertiary pipe diameter, its unique is characterized in that:
the upper end of the first-stage pipe diameter is a mixed phase inlet, and the bottom end of the first-stage pipe diameter is a first-stage water phase outlet; the upper end of the first-grade pipe diameter is connected with a conical barrel joint through threads; a primary cover plate type spiral flow passage is fixed at the upper end of the primary pipe diameter inner cavity; a primary thread is arranged on the outer side of the side wall at the top end of the primary pipe diameter; an inflatable necking device is arranged at an inlet at the top end of the primary pipe diameter, and the inflatable necking device is inflated by an inflation inlet so as to reduce the inlet of the primary pipe diameter and achieve the purpose of reducing the liquid inlet quantity of the device; welding a primary positive hook on the outer wall of the primary pipe diameter and arranging a primary drain hole, wherein the primary positive hook is used for realizing the fixation and the assembly with an external device, and the primary drain hole is used for draining water after primary separation out of the separation device; a primary negative hook is welded on the inner wall of the primary pipe diameter and used for realizing the assembly and fixation of the secondary pipe diameter; a sundry filtering hole is formed in the cover plate at the top of the primary cover plate type spiral flow passage to prevent sundries in a mixed phase from entering the separation device; the cover plate external threads and the cover plate internal threads are arranged on the cover plate of the primary cover plate type spiral flow passage and are used for realizing the connection of the primary cover plate type spiral flow passage with the primary pipe diameter and the conical barrel joint; the internal thread of the cover plate is matched with the first-level thread on the top end of the first-level pipe diameter, and the first-level cover plate type spiral flow passage is fixed on the top end of the first-level pipe diameter.
The upper end of the secondary pipe diameter is provided with a secondary mixed phase inlet and a secondary bracket type spiral flow passage; 8 first-stage and second-stage fixed foot frames are welded on the outer wall of the first-stage and second-stage fixed ring; the first-stage fixing foot rest is hooked with the first-stage negative hook on the inner wall of the first-stage pipe diameter, so that the second-stage pipe diameter is fixed at the axis position of the first-stage pipe diameter; the top end of the secondary pipe diameter is provided with a secondary thread for lengthening the secondary pipe diameter under the special working condition requirement; a second-stage positive hook is welded on the outer wall of the second-stage pipe diameter and used for fixing the second-stage pipe diameter at the axial center of the first-stage pipe diameter; a second-stage negative hook is welded on the inner wall of the second-stage pipe diameter and used for fixing the third-stage pipe diameter at the axial center position of the second-stage pipe diameter; a second-stage drain hole is formed at the bottom of the second-stage pipe diameter and used for draining water after second-stage separation out of the device; the second-stage positive hook on the outer wall of the second-stage pipe diameter is used for being hooked with the second-stage fixing ring, and the second-stage fixing ring is hooked with the first-stage negative hook through the second-stage fixing foot rest, so that the second-stage pipe diameter is fixed at the axial center position of the first-stage pipe diameter, and the oil phase can enter the second-stage pipe diameter to realize secondary separation of an oil-water mixed phase; the secondary support type spiral flow passage is fixed at the top end of the secondary pipe diameter through a fixing frame welded at the top end; the middle column section part of the second-stage bracket type spiral flow channel is provided with a second-stage flow guide cavity and a second-stage flow guide hole, and the second-stage flow guide cavity and the second-stage flow guide hole are used for preventing liquid from splashing and ensuring that mixed liquid enters the flow channel when the mixed liquid impacts the second-stage bracket type spiral flow channel.
The upper end of the third-stage pipe diameter is provided with a third-stage mixed phase inlet and a third-stage bracket type spiral flow passage; the third-stage pipe diameter is hooked with a second-stage and third-stage fixing rings through a third-stage positive hook welded on the outer wall of the third-stage pipe diameter, and then the second-stage and third-stage fixing rings are hooked with a second-stage negative hook to ensure that the third-stage pipe diameter is fixed at the axial center position of the second-stage pipe diameter, so that a mixed phase enters the third-stage pipe diameter; the mixed liquid after the second-stage cyclone separation enters a third-stage pipe diameter from a third-stage mixed phase inlet and a third-stage flow guide cavity; the mixed liquid in the third-stage diversion cavity and the mixed phase in the mixed phase inlet enter the third-stage support type spiral flow passage together; under the action of cyclone separation, the water phase moves to the side wall of the third-stage pipe diameter and is finally discharged out of the device through a third-stage drain hole and collected, and the oil phase is gathered towards the axial center of the third-stage pipe diameter and is finally discharged out of the device through a third-stage oil phase outlet; the outlet end of the third-stage oil phase is welded with a bottom flange.
The second-stage fixing ring fixes the second-stage pipe diameter at the axial center position of the first-stage pipe diameter; the two-stage and three-stage fixing rings fix the three-stage pipe diameter at the axial center position of the second-stage pipe diameter.
A connecting flange and a conical barrel joint internal thread are respectively arranged at the conical top end and the conical bottom end of the conical barrel joint; the inner thread of the conical barrel joint is matched with the outer thread of the cover plate, and the conical barrel joint is fixedly connected with the primary cover plate type spiral flow passage; the connecting flange is used for being connected with a flange in an actual working condition, so that a mixed phase enters the separation device from a mixed phase inlet.
The oil-water mixed phase after the primary cyclone separation enters the secondary pipe diameter from the secondary mixed phase inlet and the secondary flow guide cavity; the mixed phase flowing in from the second-stage flow guide cavity flows into the flow channel of the second-stage support type spiral flow channel together with the mixed phase flowing in from the mixed phase inlet after flowing out from the second-stage flow guide hole; finally, the mixture enters a third-stage pipe diameter fixed by a second-stage and third-stage fixed ring to be separated at the next stage.
The invention has the following beneficial effects: the invention mainly comprises a first-stage pipe diameter, a second-stage pipe diameter, a third-stage pipe diameter, a conical joint, a first-stage cover plate type spiral flow passage, a second-stage bracket type spiral flow passage, a third-stage bracket type spiral flow passage and the like. One-level pipe diameter and one-level apron formula spiral flow channel mainly carry out the one-level separation to mixed liquid, and second grade pipe diameter and second grade posture spiral flow channel carry out the second grade separation to mixed liquid, and tertiary pipe diameter and tertiary posture spiral flow channel mainly carry out tertiary separation to the misce bene phase to collect the oil phase. The invention relates to a multi-stage oil-water cyclone separation principle, which comprises the following steps: the mixed phase enters the conical barrel joint cavity from the mixed phase inlet, and enters the primary pipe diameter under the filtering action of the impurity filtering holes. The water phase is dispersed to the side wall of the first-stage pipe diameter by the cyclone separation effect of the first-stage cover plate type spiral flow channel and is collected by a first-stage water phase outlet and a first-stage drain hole discharging device, and the oil phase and a small amount of water phase enter a second-stage pipe diameter fixed by a second-stage fixed ring. The mixed liquid entering the second-stage pipe diameter enters a flow channel of a second-stage bracket type spiral flow channel from a second-stage mixed phase inlet and a second-stage flow guide cavity, under the cyclone separation action of the second-stage bracket type spiral flow channel, the water phase is dispersed towards the side wall of the second-stage pipe diameter and is collected by a second-stage water phase outlet and a second-stage drain hole discharging device, and the oil phase and a very small amount of water phase enter a third-stage pipe diameter fixed by a second-stage and third-stage fixing ring. Similarly, the water phase moves to the side wall and is collected by a three-stage drain hole discharging device under the cyclone separation action of the three-stage support type spiral flow passage. And the oil phase is collected by a three-stage oil phase outlet discharging device. And finally, completing the multi-stage high-precision separation of the oil-water mixed phase.
In conclusion, the device is based on the cyclone separation theory, provides the multistage oil-water separation device, is used for realizing oil-water separation in pipelines and various connectable devices, can realize oil-water separation under different working conditions, improves the oil-water separation efficiency and precision, and has the advantages of high efficiency, small size, high speed and the like.
Description of the drawings:
fig. 1 is an abstract attached drawing.
Fig. 2 is an axial sectional view of the separation device.
Fig. 3 is an exploded view of the present separation device.
FIG. 4 is a view showing an internal structure of the separation apparatus.
FIG. 5 is an external view of the first-stage pipe diameter of the separation device.
FIG. 6 is a sectional view of the first-stage pipe diameter of the separation device.
Fig. 7 is an appearance view of the primary cover plate type spiral flow passage of the separation device.
Fig. 8 is an appearance view of the cone-barrel joint of the separating device.
FIG. 9 is an external view of a two-stage retaining ring of the separation device.
FIG. 10 is an assembly diagram of the inner structure of the primary pipe diameter of the separation device.
FIG. 11 is an axial sectional view of the secondary pipe diameter of the separation device.
FIG. 12 is an assembly appearance diagram of the primary pipe diameter and the secondary pipe diameter of the separating device.
FIG. 13 is an axial sectional view of the separation device for the assembly of the primary pipe diameter and the secondary pipe diameter.
FIG. 14 is an axial sectional view of the second stage pipe diameter and the second stage fixing ring of the separating device.
Fig. 15 is an appearance view of the two-stage support type spiral flow passage of the separation device.
Fig. 16 is an axial sectional view of the inner structure assembly of the secondary pipe diameter of the separating device.
FIG. 17 is an external view of the second-stage diameter and third-stage diameter of the separating device.
FIG. 18 is an axial sectional view of the second-stage pipe diameter and the third-stage pipe diameter of the separating device.
Fig. 19 is an axial sectional view of the inner structure assembly of the three-stage pipe diameter of the separating device.
In the figure, 1-first-stage pipe diameter, 101-mixed phase inlet, 102-first-stage water phase outlet, 103-first-stage cover plate type spiral flow channel, 104-second-stage fixing ring, 105-first-stage screw thread, 106-inflation inlet, 107-inflation necking device, 108-first-stage positive hook and 109-first-stage negative hook; 110-first level drain hole; 111-sundry filtering holes, 112-cover plate external threads and 113-cover plate internal threads; 114-a second-level fixed foot stand; 2-second-stage pipe diameter, 201-second-stage mixed phase inlet, 202-second-stage water phase outlet, 203-second-stage bracket type spiral flow channel and 204-second-third-stage fixing ring; 205-secondary screw thread, 206-secondary positive hook, 207-secondary negative hook, and 208-secondary drain hole; 209-fixing frame, 210-second-level flow guide cavity, 211-second-level flow guide hole; 3-three-stage pipe diameter, 301-three-stage mixed phase inlet, 302-three-stage oil phase outlet and 303-three-stage support type spiral flow channel; 304-tertiary positive hook; 305-three-stage drainage holes; 306-third-level diversion cavities, 307-third-level diversion holes and 308-bottom flanges; 4-cone barrel joint; 401-connecting flange, 402-conical barrel joint internal thread.
The specific implementation mode is as follows:
the invention will be further described with reference to the accompanying drawings in which:
fig. 1 is an attached drawing of an abstract, the overall appearance of the multistage annular cylinder type oil-water high-precision cyclone separation device is in a rocket type, and specifically, the multistage annular cylinder type oil-water high-precision cyclone separation device is provided with a first-stage pipe diameter 1, the upper end of the first-stage pipe diameter 1 is a mixed phase inlet 101, the bottom end of the first-stage pipe diameter 1 is a first-stage water phase outlet 102, a second-stage water phase outlet 202 and a third-stage oil phase outlet 302, and a cone barrel connector 4 is connected to the upper end of the first-stage pipe diameter 1 through threads, so that the device can be connected with pipe diameters or other devices.
Fig. 2 is a sectional view of the axial structural plane of the separation device. A multi-stage annular cylinder type oil-water high-precision cyclone separation device mainly structurally comprises a first-stage pipe diameter 1, a second-stage pipe diameter 2 and a third-stage pipe diameter 3. Wherein, the upper end of the first-stage pipe diameter 1 is fixed with a first-stage cover plate type spiral flow passage 103, the upper end of the second-stage pipe diameter 2 is a second-stage mixed phase inlet 201 and a second-stage bracket type spiral flow passage 203, and the upper end of the third-stage pipe diameter 3 is a third-stage mixed phase inlet 301 and a third-stage bracket type spiral flow passage 303.
Fig. 3 is an exploded view of the present separation apparatus, wherein a secondary retainer ring 104 secures the secondary pipe diameter 2 at the axial center of the primary pipe diameter 1. The second-third fixing ring 204 fixes the third-stage pipe diameter 3 at the axial center position of the second-stage pipe diameter 2.
FIG. 4 is a view showing an internal structure of the present separator.
FIG. 5 is an external view of the first class pipe diameter. In order to facilitate the fixed connection of the primary pipe diameter 1 and the primary cover plate type spiral flow passage 103, a primary thread 105 is arranged on the outer side of the side wall of the top end of the primary pipe diameter 1. Meanwhile, in order to control the liquid inlet amount, an inflatable necking device 107 is arranged at the inlet at the top end of the primary pipe diameter 1. If the liquid inlet amount of the device is reduced, the inflatable necking device 107 is inflated through the inflation inlet 106, so that the inlet of the first-stage pipe diameter 1 is reduced, and the purpose of reducing the liquid inlet amount of the device is achieved. A primary positive hook 108 is welded on the outer wall of the primary pipe diameter 1, a primary water discharging hole 110 is formed in the outer wall, the primary positive hook 108 is fixed and assembled with other devices, and the primary water discharging hole 110 discharges water after primary separation out of the device. Meanwhile, a first-level negative hook 109 is welded on the inner wall of the first-level pipe diameter 1, and the assembly and fixing effects on the second-level pipe diameter 2 are achieved. As shown in fig. 6.
Fig. 7 is an external view of the primary shroud-type spiral flow passage 103. The sundries filtering hole 111 is formed in the cover plate at the top of the primary cover plate type spiral flow channel 103, so that sundries in a mixed phase are prevented from entering the device, and the separation efficiency of the multistage annular cylinder type oil-water high-precision cyclone separation device is prevented from being influenced. In order to facilitate the connection of the first-stage cover plate type spiral flow passage 103 with the first-stage pipe diameter 1 and the cone barrel joint 4, a cover plate external thread 112 and a cover plate internal thread 113 are arranged on a cover plate of the first-stage cover plate type spiral flow passage 103. The cover plate internal thread 113 is matched with the first-stage thread 105 at the top end of the first-stage pipe diameter 1 to fix the first-stage cover plate type spiral flow passage 103 at the top end of the first-stage pipe diameter 1.
Fig. 8 is an external view of the cone-barrel joint 4. The cone top section and the cone bottom end of the cone barrel joint 4 are respectively provided with a connecting flange 401 and a cone barrel joint internal thread 402. The cone-barrel joint internal thread 402 is matched with the cover plate external thread 112 to fix the cone-barrel joint and the first-stage cover plate type spiral flow passage 103. The connecting flange 401 can be connected with a flange in actual working conditions, so that a mixed phase enters the multistage annular cylinder type oil-water high-precision cyclone separation device from the mixed phase inlet 101.
Fig. 9 is an external view of a secondary retaining ring 104. On the outer wall of the secondary fixing ring 104, 8 secondary fixing foot rests 114 are welded. The second-stage fixing foot rest 114 is hooked with the first-stage negative hook 109 on the inner wall of the first-stage pipe diameter 1, so as to fix the second-stage pipe diameter 2 at the axis position of the first-stage pipe diameter 1. FIG. 10 is a view of the fit-up relationship in the primary pipe diameter.
As can be seen from fig. 10, the oil-water mixture enters the inner cavity of the conical barrel joint 4 through the mixed phase inlet 101, then the mixed phase enters the primary cover plate type spiral flow channel 103 under the filtering action of the impurity filtering hole 111, under the cyclone separation action of the primary cover plate type spiral flow channel 103, the oil phase and a small amount of water are collected towards the axial center of the primary pipe diameter 1, and most of the water is dispersed towards the side wall of the primary pipe diameter 1. The oil phase and a small amount of water phase enter the second-stage pipe diameter 2 fixed by the second-stage fixing ring 104, and most of the water is discharged out of the device through the first-stage water outlet 110 and the first-stage water phase outlet 102 and collected.
Fig. 11 is a sectional view of the secondary pipe diameter 2. Set up second grade screw thread 205 at second grade pipe diameter 2 top, can lengthen second grade pipe diameter 2 under the special operating mode demand. The outer wall of the second-stage pipe diameter 2 is welded with a second-stage positive hook 206 to fix the second-stage pipe diameter 2 at the axial center of the first-stage pipe diameter 1. The inner wall of the second-stage pipe diameter 2 is welded with a second-stage negative hook 207, and the third-stage pipe diameter 3 is fixed at the axial center of the second-stage pipe diameter 2. And a second-stage water discharging hole 208 is arranged at the bottom of the second-stage pipe diameter 2 and used for discharging water after second-stage separation.
FIG. 12 is an assembly view of the first and second pipe diameters.
Fig. 13 is a view of a secondary tube diameter assembly. The second-stage positive hook 206 on the outer wall of the second-stage pipe diameter 2 is hooked with the second-stage fixing ring 104, and the second-stage fixing ring 104 is hooked with the first-stage negative hook 109 through the second-stage fixing foot rest 114, so that the second-stage pipe diameter 2 is fixed at the axial center position of the first-stage pipe diameter, and the oil phase is further ensured to enter the second-stage pipe diameter 2 to realize secondary separation of an oil-water mixed phase.
FIG. 14 is a view showing the relationship between the second-stage pipe diameter and the second-stage fixing ring.
Fig. 15 is an overall external view of the secondary support-type spiral flow path 203. The secondary support type spiral flow passage 203 is fixed at the top end of the secondary pipe diameter 2 through a fixing frame 209 welded at the top end. In the middle column section part of second grade support formula spiral flow channel 203, be provided with second grade water conservancy diversion chamber 210 and second grade water conservancy diversion hole 211 to liquid splashes and guarantees when can prevent to mix liquid impact second grade support formula spiral flow channel 203 that mixed liquid can accurately get into in the runner simultaneously.
Fig. 16 is a view showing the fitting relationship in the secondary pipe diameter 2. The oil-water mixed phase after the first-stage cyclone separation enters the second-stage pipe diameter 2 from the second-stage mixed phase inlet 201 and the second-stage flow guide cavity 210. The mixed phase flowing in from the secondary flow guide cavity 210 flows out from the secondary flow guide hole 211 and then flows into the flow channel of the secondary support type spiral flow channel 203 together with the mixed phase flowing in from the mixed phase inlet. Under the action of cyclone separation, oil is gathered towards the axial center of the second-level pipe diameter 2 and finally enters the third-level pipe diameter 3 fixed by the second-level and third-level fixing rings 204 to be subjected to next-level separation. The water phase disperses towards the side wall of the second-stage pipe diameter 2 and is collected by a second-stage water drainage hole 208 and a second-stage water phase outlet 202 discharging device.
Fig. 17 is an assembly appearance view of a secondary pipe diameter and a tertiary pipe diameter.
FIG. 18 is an assembled cross-sectional view of a secondary pipe diameter and a tertiary pipe diameter. The third-level pipe diameter 3 is hooked with the second-level and third-level fixing rings 204 through the third-level positive hooks 304 welded on the outer wall of the third-level pipe diameter 3, and then the second-level and third-level fixing rings 204 are hooked with the second-level negative hooks 207, so that the third-level pipe diameter 3 is fixed in the axial center position of the second-level pipe diameter 2, and the mixed phase enters the third-level pipe diameter 3.
FIG. 19 is a three-stage pipe diameter internal structure view. As shown in fig. 17, the mixed liquid after the second-stage cyclone separation enters the third-stage pipe diameter 3 through the third-stage mixed phase inlet 301 and the third-stage diversion cavity 306. The mixed liquid in the third-stage diversion cavity 306 and the mixed phase in the mixed phase inlet 301 enter the third-stage support type spiral flow passage 303 together. Through the cyclone separation, the water phase moves to the side wall of the third-stage pipe diameter 3 and is finally discharged out of the device through the third-stage water discharge hole 305 and collected, and the oil phase is collected to the axial center of the third-stage pipe diameter 3 and is finally discharged out of the device through the third-stage oil phase outlet 302. The outlet end of the third-stage oil phase outlet 302 is welded with a bottom flange 308 which can be connected with the pipe diameters of other collecting devices, so that the oil phase is collected.
It can be known from fig. 1 to fig. 19 that the overall appearance of the multi-stage annular cylinder type oil-water high-precision cyclone separation device is rocket-shaped, and specifically has a first-stage pipe diameter 1, wherein the upper end of the first-stage pipe diameter 1 is a mixed phase inlet 101, the bottom end is a first-stage water phase outlet 102, a second-stage water phase outlet 202 and a third-stage oil phase outlet 302, and the upper end of the first-stage pipe diameter 1 is connected with a cone barrel connector 4 through threads, so that the device can be connected with pipe diameters or other devices. A multi-stage annular cylinder type oil-water high-precision cyclone separation device mainly structurally comprises a first-stage pipe diameter 1, a second-stage pipe diameter 2 and a third-stage pipe diameter 3. Wherein one-level apron formula spiral runner 103 is fixed with on one-level pipe diameter, and second grade pipe diameter 2 upper end is second grade misce bene entry 201 and second grade posture spiral runner 203, and third grade pipe diameter 3 upper end is third grade misce bene entry 301 and third grade posture spiral runner 303. Wherein, the second-stage fixing ring 104 fixes the second-stage pipe diameter 2 at the axial center position of the first-stage pipe diameter 1. The second-third fixing ring 204 fixes the third-stage pipe diameter 3 at the axial center position of the second-stage pipe diameter 2. In order to facilitate the fixed connection of the primary pipe diameter 1 and the primary cover plate type spiral flow passage 103, a primary thread 105 is arranged on the outer side of the side wall of the top end of the primary pipe diameter 1. Meanwhile, in order to control the liquid inlet amount, an inflatable necking device 107 is arranged at the inlet at the top end of the primary pipe diameter 1. If the liquid inlet amount of the device is reduced, the inflatable necking device 107 is inflated through the inflation inlet 106, so that the inlet of the first-stage pipe diameter 1 is reduced, and the purpose of reducing the liquid inlet amount of the device is achieved. A primary positive hook 108 is welded on the outer wall of the primary pipe diameter 1, a primary water discharging hole 110 is formed in the outer wall, the primary positive hook 108 is fixed and assembled with other devices, and the primary water discharging hole 110 discharges water after primary separation out of the device. Meanwhile, a first-level negative hook 109 is welded on the inner wall of the first-level pipe diameter 1, and the assembly and fixing effects on the second-level pipe diameter 2 are achieved. The sundries filtering hole 111 is formed in the cover plate at the top of the primary cover plate type spiral flow channel 103, so that sundries in a mixed phase are prevented from entering the device, and the separation efficiency of the multistage annular cylinder type oil-water high-precision cyclone separation device is prevented from being influenced. In order to facilitate the connection of the first-stage cover plate type spiral flow passage 103 with the first-stage pipe diameter 1 and the cone barrel joint 4, a cover plate external thread 112 and a cover plate internal thread 113 are arranged on a cover plate of the first-stage cover plate type spiral flow passage 103. The cover plate internal thread 113 is matched with the first-stage thread 105 at the top end of the first-stage pipe diameter 1 to fix the first-stage cover plate type spiral flow passage 103 at the top end of the pipe diameter 1. The cone top section and the cone bottom end of the cone barrel joint 4 are respectively provided with a connecting flange 401 and a cone barrel joint internal thread 402. The cone-barrel joint internal thread 402 is matched with the cover plate external thread 112 to fix the cone-barrel joint and the first-stage cover plate type spiral flow passage 103. The connecting flange 401 can be connected with a flange in actual working conditions, so that a mixed phase enters the multistage annular cylinder type oil-water high-precision cyclone separation device from the mixed phase inlet 101. On the outer wall of the secondary fixing ring 104, 8 secondary fixing foot rests 114 are welded. The second-stage fixing foot rest 114 is hooked with the first-stage negative hook 109 on the inner wall of the first-stage pipe diameter 1, so as to fix the second-stage pipe diameter 2 at the axis position of the first-stage pipe diameter 1. The oil-water mixed liquid enters the inner cavity of the conical barrel joint 4 through the mixed phase inlet 101, then the mixed phase enters the primary cover plate type spiral flow channel 103 under the filtering action of the impurity filtering hole 111, under the rotational flow separation action of the primary cover plate type spiral flow channel 103, the oil phase and a small amount of water are gathered towards the axial center of the primary pipe diameter 1, and most of the water is dispersed towards the side wall of the primary pipe diameter 1. The oil phase and a small amount of water phase enter the second-stage pipe diameter 2 fixed by the second-stage fixing ring 104, and most of the water is discharged out of the device through the first-stage water outlet 110 and the first-stage water phase outlet 102 and collected. Set up second grade screw thread 205 at second grade pipe diameter 2 top, can lengthen second grade pipe diameter 2 under the special operating mode demand. The outer wall of the second-stage pipe diameter 2 is welded with a second-stage positive hook 206 to fix the second-stage pipe diameter 2 at the axial center of the first-stage pipe diameter 1. The inner wall of the second-stage pipe diameter 2 is welded with a second-stage negative hook 207207, and the third-stage pipe diameter 3 is fixed at the axial center of the second-stage pipe diameter 2. And a second-stage water discharging hole 208 is arranged at the bottom of the second-stage pipe diameter 2 and used for discharging water after second-stage separation. The second-stage positive hook 206 on the outer wall of the second-stage pipe diameter 2 is hooked with the first-stage second-stage fixing ring 104 in the radial direction, and the first-stage second-stage fixing ring 104 is hooked with the first-stage negative hook 109 through the first-stage second-stage fixing foot rest 114, so that the second-stage pipe diameter 2 is fixed at the axial center position of the first-stage pipe diameter, and the oil phase is further guaranteed to enter the second-stage pipe diameter 2 to achieve secondary separation of an oil-water mixed phase. The secondary support type spiral flow passage 203 is fixed at the top end of the secondary pipe diameter 2 through a fixing frame 209 welded at the top end. In the middle column section part of second grade support formula spiral flow channel 203, be provided with second grade water conservancy diversion chamber 210 and second grade water conservancy diversion hole 211 to liquid splashes and guarantees when can prevent to mix liquid impact second grade support formula spiral flow channel 203 that mixed liquid can accurately get into in the runner simultaneously. The oil-water mixed phase after the first-stage cyclone separation enters the second-stage pipe diameter 2 from the second-stage mixed phase inlet 201 and the second-stage flow guide cavity 210. The mixed phase flowing in from the secondary flow guide cavity 210 flows out from the secondary flow guide hole 211 and then flows into the flow channel of the secondary support type spiral flow channel 203 together with the mixed phase flowing in from the mixed phase inlet. Under the action of cyclone separation, oil is gathered towards the axial center of the second-level pipe diameter 2 and finally enters the third-level pipe diameter 3 fixed by the second-level and third-level fixing rings 204 to be subjected to next-level separation. The water phase disperses towards the side wall of the second-stage pipe diameter 2 and is collected by a second-stage water drainage hole 208 and a second-stage water phase outlet 202 discharging device. The third-level pipe diameter 3 is hooked with the second-level and third-level fixing rings 204 through the third-level positive hooks 304 welded on the outer wall of the third-level pipe diameter 3, and then the second-level and third-level fixing rings 204 are hooked with the second-level negative hooks 207, so that the third-level pipe diameter 3 is fixed in the axial center position of the second-level pipe diameter 2, and the mixed phase enters the third-level pipe diameter 3. The mixed liquid after the second-stage cyclone separation enters the third-stage pipe diameter 3 from the third-stage mixed phase inlet 301 and the third-stage diversion cavity 306. The mixed liquid in the third-stage diversion cavity 306 and the mixed phase in the mixed phase inlet 301 enter the third-stage support type spiral flow passage 303 together. Through the cyclone separation, the water phase moves to the side wall of the third-stage pipe diameter 3 and is finally discharged out of the device through the third-stage water discharge hole 305 and collected, and the oil phase is collected to the axial center of the third-stage pipe diameter 3 and is finally discharged out of the device through the third-stage oil phase outlet 302. The outlet end of the third-stage oil phase outlet 302 is welded with a bottom flange 308 which can be connected with the pipe diameters of other collecting devices, so that the oil phase is collected.
The principle of the cyclone separation of the invention is as follows: the mixed phase enters the cavity of the conical barrel joint 4 from the mixed phase inlet 101, and enters the primary pipe diameter 1 under the filtering action of the impurity filtering holes 111. By the cyclone separation of the first cover plate type spiral flow channel 103, the water phase is dispersed to the side wall of the first pipe diameter 1 and collected by the first water phase outlet 102 and the first water outlet 110, and the oil phase and a small amount of water phase enter the second pipe diameter 2 fixed by the second fixing ring 104. The mixed liquid entering the second-stage pipe diameter 2 enters the flow channel of the second-stage support type spiral flow channel 203 from the second-stage mixed phase inlet 201 and the second-stage flow guide cavity 210, under the cyclone separation effect of the second-stage support type spiral flow channel 203, the water phase is dispersed towards the side wall of the second-stage pipe diameter 2 and collected by the second-stage water phase outlet 202 and the second-stage drain hole 208 discharging device, and the oil phase and a very small amount of water phase enter the third-stage pipe diameter 3 fixed by the second-stage and third-stage fixing rings 204. Similarly, the water phase moves toward the sidewall and is collected by the discharge from the tertiary drainage holes 305 by the cyclonic separation action of the tertiary support helical flow path 303. And the oil phase is collected by the discharge from the tertiary oil phase outlet 302. And finally, completing the multi-stage high-precision separation of the oil-water mixed phase.
Claims (1)
1. The utility model provides a multistage cylinder water oil separating device, includes one-level pipe diameter (1), second grade pipe diameter (2) and tertiary pipe diameter (3), its characterized in that:
the upper end of the first-stage pipe diameter (1) is provided with a mixed phase inlet (101), and the bottom end is provided with a first-stage water phase outlet (102); the upper end of the first-stage pipe diameter (1) is connected with a conical barrel joint (4) through threads; a primary cover plate type spiral flow passage (103) is fixed at the upper end of the inner cavity of the primary pipe diameter (1); a primary thread (105) is arranged on the outer side of the side wall at the top end of the primary pipe diameter (1); an inflatable necking device (107) is arranged at an inlet at the top end of the primary pipe diameter (1), and the inflatable necking device (107) is inflated through an inflation inlet (106) so as to reduce the inlet of the primary pipe diameter (1) and achieve the purpose of reducing the liquid inlet amount of the device; a primary positive hook (108) is welded on the outer wall of the primary pipe diameter (1) and a primary drain hole (110) is arranged, the primary positive hook (108) is used for realizing the fixation and assembly with an external device, and the primary drain hole (110) is used for draining water after primary separation out of the separation device; the inner wall of the first-stage pipe diameter (1) is welded with a first-stage negative hook (109) for realizing the assembly and fixation of the second-stage pipe diameter (2); a sundry filtering hole (111) is arranged at the cover plate at the top of the primary cover plate type spiral flow passage (103) to prevent sundries in a mixed phase from entering the separation device; a cover plate external thread (112) and a cover plate internal thread (113) are arranged on a cover plate of the primary cover plate type spiral flow channel (103) and are used for realizing the connection of the primary cover plate type spiral flow channel (103) with the primary pipe diameter (1) and the conical barrel joint (4); the cover plate internal thread (113) is matched with the primary thread (105) at the top end of the primary pipe diameter (1), and the primary cover plate type spiral flow channel (103) is fixed at the top end of the primary pipe diameter (1);
the upper end of the secondary pipe diameter (2) is provided with a secondary mixed phase inlet (201) and a secondary bracket type spiral flow passage (203); 8 second-stage fixed foot stands (114) are welded on the outer wall of the second-stage fixed ring (104); a second-stage fixed foot rest (114) is hooked with a first-stage negative hook (109) on the inner wall of the first-stage pipe diameter (1), so that the second-stage pipe diameter (2) is fixed at the axis position of the first-stage pipe diameter (1); a secondary thread (205) is arranged at the top end of the secondary pipe diameter (2) and used for lengthening the secondary pipe diameter (2) under the requirement of special working conditions; a secondary positive hook (206) is welded on the outer wall of the secondary pipe diameter (2) and used for fixing the secondary pipe diameter (2) at the axial center position of the primary pipe diameter (1); a second-stage negative hook (207) is welded on the inner wall of the second-stage pipe diameter (2) and is used for fixing the third-stage pipe diameter (3) at the axial center position of the second-stage pipe diameter (2); a secondary water discharge hole (208) is arranged at the bottom of the secondary pipe diameter (2) and is used for discharging water after secondary separation out of the device; the secondary positive hook (206) on the outer wall of the secondary pipe diameter (2) is used for being hooked with the secondary fixing ring (104), the secondary fixing ring (104) is hooked with the primary negative hook (109) through the secondary fixing foot rest (114), and therefore the secondary pipe diameter (2) is fixed at the axial center of the primary pipe diameter, and oil phase can enter the secondary pipe diameter (2) to achieve secondary separation of an oil-water mixed phase; the secondary support type spiral flow passage (203) is fixed at the top end of the secondary pipe diameter (2) through a fixing frame (209) welded at the top end; a secondary flow guide cavity (210) and a secondary flow guide hole (211) are arranged at the middle column section part of the secondary support type spiral flow channel (203) and are used for preventing liquid from splashing when the mixed liquid impacts the secondary support type spiral flow channel (203) and ensuring that the mixed liquid enters the flow channel;
the upper end of the third-stage pipe diameter (3) is provided with a third-stage mixed phase inlet (301) and a third-stage bracket type spiral flow passage (303); the three-stage pipe diameter (3) is hooked with a second-third fixing ring (204) through a third-stage positive hook (304) welded on the outer wall of the three-stage pipe diameter (3), and then the second-third fixing ring (204) is hooked with a second-stage negative hook (207) to ensure that the three-stage pipe diameter (3) is fixed at the axial center of the second-stage pipe diameter (2), so that a mixed phase enters the three-stage pipe diameter (3); the mixed liquid after the second-stage cyclone separation enters the third-stage pipe diameter (3) from the third-stage mixed phase inlet (301) and the third-stage flow guide cavity (306); the mixed liquid in the third-stage flow guide cavity (306) and the mixed phase in the mixed phase inlet (301) enter the third-stage support type spiral flow passage (303) together; through the cyclone separation effect, the water phase moves to the side wall of the three-stage pipe diameter (3) and is finally discharged out of the device through a three-stage water discharge hole (305) and collected, and the oil phase is gathered to the axial center of the three-stage pipe diameter (3) and is finally discharged out of the device through a three-stage oil phase outlet (302); the outlet end of the third-stage oil phase outlet (302) is welded with a bottom flange (308);
a secondary pipe diameter (2) is fixed at the axial center position of a primary pipe diameter (1) by a secondary fixing ring (104); the second-third fixed ring (204) fixes the third-stage pipe diameter (3) at the axial center position of the second-stage pipe diameter (2);
a connecting flange (401) and a conical barrel joint internal thread (402) are respectively arranged at the conical top end and the conical bottom end of the conical barrel joint (4); the conical barrel joint internal thread (402) is matched with the cover plate external thread (112) to fixedly connect the conical barrel joint (4) with the primary cover plate type spiral flow channel (103); the connecting flange (401) is used for being connected with a flange in an actual working condition, so that a mixed phase enters the separation device from the mixed phase inlet (101);
the oil-water mixed phase after the primary cyclone separation enters the secondary pipe diameter (2) from a secondary mixed phase inlet (201) and a secondary flow guide cavity (210); the mixed phase flowing in from the secondary guide cavity (210) flows out from the secondary guide hole (211) and then flows into the flow channel of the secondary support type spiral flow channel (203) together with the mixed phase flowing in from the mixed phase inlet; finally, the mixture enters a three-stage pipe diameter (3) fixed by a two-stage and three-stage fixing ring (204) to be subjected to next-stage separation.
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CN112480958A (en) * | 2020-11-05 | 2021-03-12 | 中国石油大学(华东) | Axial-flow type oil-water separation device and method |
CN112588460B (en) * | 2020-11-26 | 2022-05-31 | 东北石油大学 | Spiral shearing viscosity reduction cyclone separation device |
CN112588461A (en) * | 2020-11-26 | 2021-04-02 | 东北石油大学 | Multi-stage cluster cyclone separation device for oil-water separation |
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