CN210826067U - Liquid component is joined in marriage to electric dehydrator entry - Google Patents
Liquid component is joined in marriage to electric dehydrator entry Download PDFInfo
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- CN210826067U CN210826067U CN201921082285.2U CN201921082285U CN210826067U CN 210826067 U CN210826067 U CN 210826067U CN 201921082285 U CN201921082285 U CN 201921082285U CN 210826067 U CN210826067 U CN 210826067U
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Abstract
An inlet liquid distribution component of an electric dehydrator comprises a main flow guide pipe, wherein the main flow guide pipe is communicated with a first-stage diversion pipe; the first-stage diversion pipe is communicated with the second-stage diversion pipe through a plurality of branches with different pipe diameters, and the second-stage diversion pipe is communicated with the distribution pipe through a plurality of branches; and a plurality of pipe flow outlets with different pipe intervals are arranged on the distribution pipe. The utility model discloses can make each pipe flow export evenly cloth liquid, reduce impact and the disturbance of inflow liquid to liquid among the separator, improve electric dehydration efficiency.
Description
Technical Field
The utility model relates to an entry liquid distribution component for crude oil electric dehydrator, especially an entry liquid distribution component of cloth liquid between polar plate, more specifically it is the liquid distribution component that enables crude oil evenly to get into between the polar plate that says so. Relates to the technical field of multi-phase flow. The device is suitable for liquid distribution of low-water-content crude oil between the entering polar plates.
Background
At present, the traditional electric dehydrator adopts an axially arranged inlet liquid distribution component, the whole liquid distribution component is positioned below an electrode and is parallel to the electrode, and the upper part of a distributor is provided with distribution holes which are uniformly distributed and have consistent sizes. Liquid is distributed through a liquid distribution component which is horizontally arranged in the axial direction, so that the liquid is uniformly distributed in the horizontal direction, then flows upwards and vertically to enter electrodes, oil-water separation is carried out by utilizing a high-intensity electric field, the separated crude oil enters an oil outlet at the upper part, and sewage enters a water outlet at the lower part. However, in the practical application process, the incoming liquid flows vertically upwards to mix with water at the lower part, so that impact is caused on an oil-water interface in the electric dehydrator, the oil-water interface generates large fluctuation, the distributor cannot ensure uniform liquid distribution in the horizontal direction, and in addition, the distributor is arranged at a lower position, so that the settling time of water drops is reduced, the oil-water separation efficiency is low, and the distribution of the crude oil containing water is not uniform enough. In actual production, the separator volume is great, and the export distribution on the distributing pipe is even and the size is unanimous, can lead to being close to the export flow in distributing pipe center great, and unable maximum efficiency utilizes the separator internal volume, easily causes the wasting of resources, especially when the great velocity of flow is very fast, makes export cloth liquid inhomogeneous very easily, produces the disturbance in the inside of separator, causes fluidic sputter and stirring, and these all can influence the electric dehydration effect, are unfavorable for the separation of liquid.
According to the inlet distributor of the liquid separation device, the liquid distribution component at the inlet has different apertures, so that the flow velocity of the outlet is different, the pipe diameters are kept consistent, the flow of the outlet is different due to the influence of friction resistance, the aim of uniformly distributing liquid cannot be achieved, and the liquid distribution at the bottom causes the mixing of oil and water, so that the oil-water interface is disturbed, and the separation efficiency is reduced. The disclosed novel oil inlet distributor for electric desalting and electric dewatering cannot guarantee the uniformity of flow and flow rate of each outlet and cannot achieve the purpose of uniform liquid distribution.
In view of the above, there is a need for an inlet distribution member for uniform distribution of liquid between plates so that at high flow rates and high flow rates, the crude oil containing water can be distributed uniformly between the plates and the separator volume can be utilized to the maximum. The equipment design is more reasonable, uses more high-efficiently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can maximize utilize the volume, and also can keep the inside steady of separator device when the entrance velocity of flow is fast or flow is big, even liquid distribution between the polar plate, the liquid component is joined in marriage to the efficient entry of water oil separating.
In order to achieve the purpose, the utility model adopts the technical proposal that:
an inlet liquid distribution component of an electric dehydrator comprises a main flow guide pipe, wherein the main flow guide pipe is communicated with a first-stage diversion pipe; the first-stage diversion pipe is communicated with the second-stage diversion pipe through a plurality of branches with different pipe diameters, and the second-stage diversion pipe is communicated with the distribution pipe through a plurality of branches; and a plurality of pipe flow outlets with different pipe intervals are arranged on the distribution pipe.
The first-stage diversion pipe is provided with three branch pipes; the branched pipes positioned in the middle of the first-stage branched flow guide pipe (2) are small in pipe diameter, the pipe diameters of the branched pipes positioned at two ends are larger than that of the branched pipes positioned in the middle, and the branched flow guide pipe is composed of a straight pipe section and a reducing pipe; the reducing pipe is communicated with the second-level branch flow guiding pipe after reducing along the radial outlet direction.
The joint of the distribution pipe and the secondary flow guide pipe is positioned at the midpoint of the length of the distribution pipe.
The distribution pipe divides two-layer setting from top to bottom, is upper distribution pipe and lower floor's distribution pipe respectively, and the pipe diameter of upper distribution pipe and lower floor's distribution pipe is different.
The distribution pipe is characterized in that a plurality of pipe flow outlets arranged on the distribution pipe are symmetrically distributed on two sides of the distribution pipe by taking the center of the distribution pipe as a symmetry axis, the distance between the pipe flow outlets on each side is non-uniformly distributed, the distance between the pipe flow outlets close to the center of the distribution pipe is large, and the distance between the pipe flow outlets far away from the center of the distribution pipe is small.
The utility model has the advantages of it is following:
(1) the pipe diameters of the first-stage diversion pipes are different in size, friction resistance difference caused by different lengths of the first-stage diversion pipes is balanced, flow in the first-stage diversion pipes is basically consistent, and liquid distribution is more uniform.
(2) The common electric separator adopts a three-layer electrode plate form to form two strong electric fields, and the inlet liquid distribution component is arranged aiming at two field intensities formed by the three-layer electrode plate. The oil-water mixture is divided into a plurality of strands by the special distributor and directly enters two strong electric fields instead of entering a water phase according to a traditional method, so that liquid distribution between the polar plates is more uniform, the difference of friction resistance is balanced due to the difference of pipe diameters of the upper distribution pipe and the lower distribution pipe, and the flow rate and the flow speed in the distribution pipes are close to the same value.
(3) Because the distribution pipe 4 is of an upper-layer structure and a lower-layer structure, the inlet liquid distribution component directly enters two strong electric fields, the integral position of the oil inlet distributor is higher, the sedimentation height of a water phase is increased, the retention time of water drops is prolonged, the reduction of the oil content of drainage is facilitated, and the oil-water separation efficiency is improved. Meanwhile, oil directly enters the polar plates, so that mixing with bottom water can be reduced, and the water content of incoming liquid is prevented from rising.
(4) In the liquid distribution pipe, due to the influence of friction resistance, the outlet close to the center has larger flow velocity and wide spraying surface, and the outlet far away from the center has smaller flow velocity and small spraying surface. Therefore, the outlet of the distribution pipe is non-uniformly arranged, the outlet distance close to the center is large, the outlet distance far away from the center is small, the distribution can ensure that oil at the outlet is not interfered with each other, the distribution is uniform, the volume between the polar plates can be utilized to the maximum extent, and the separation efficiency is improved.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a top view of fig. 1.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in fig. 1-3, an inlet liquid distribution component of an electric dehydrator comprises a main flow guide pipe 1, wherein the main flow guide pipe 1 is communicated with a first-stage branch flow guide pipe 2; the first-stage branched flow guide pipe 2 is communicated with a second-stage branched flow guide pipe 3 through a plurality of branches with different pipe diameters, and the second-stage branched flow guide pipe 3 is communicated with a distribution pipe 4 through a plurality of branches; the distribution pipe 4 is provided with a plurality of pipe flow outlets 5.
The first-stage branch draft tube 2 is provided with three branch tubes; the branched pipes positioned in the middle of the first-stage branched flow guide pipe 2 are small in pipe diameter, the pipe diameters of the branched pipes positioned at two ends are larger than that of the branched pipes positioned in the middle, and the branched flow guide pipe consists of a straight pipe section 6 and a reducing pipe 7; the reducing pipe 7 is communicated with the second-level diversion pipe 3 after reducing the diameter of the pipe in the direction of the outlet.
Wherein the height of the branch pipe is 1000 mm. The pipe diameter of the middle branch pipe is 250-350 mm, can select 250 mm, 300mm, 350 mm etc., the pipe diameter of the straight pipe section 6 of the branch pipe of both ends is 650-750 mm, can select 650 mm, 680mm, 750mm etc., begin to taper to 250-350 mm near 1/2 height of branch pipe, namely 500mm, can select 250 mm, 300mm, 350 mm etc., form reducing pipe 7, and meet with two grades of honeycomb ducts 3.
The diameters of the branches are different, so that the friction resistance difference caused by different lengths is balanced, the flow in each branch of the first-level branch flow guide pipe is basically consistent, and the liquid distribution is more uniform.
The connection position of the distribution pipe 4 and the secondary draft tube 3 is positioned at the midpoint of the length of the distribution pipe 4. So that the friction resistance of the fluid flowing to the two sides of the distribution pipe 4 through the branch connection part is the same, and the flow velocity of the fluid flowing out of the small holes is more uniform and stable.
Aiming at the design of the three-layer electrode plate electric dehydrator commonly used at present, the distribution pipe 4 is divided into an upper layer distribution pipe 4-a and a lower layer distribution pipe 4-b, and the pipe diameters of the upper layer distribution pipe 4-a and the lower layer distribution pipe 4-b are different. The pipe diameter of the upper distribution pipe 4-a is 350-380 mm, and can be 350 mm, 360mm, 370 mm, 380 mm and the like, and the pipe diameter of the lower distribution pipe (4-b) is 280-320 mm, and can be 280 mm, 290 mm, 300mm, 310 mm, 320 mm and the like.
The plurality of pipe flow outlets 5 arranged on the side surface of the distribution pipe 4 are symmetrically distributed on both sides by taking the center of the distribution pipe 4 as a symmetry axis, and the distance between the pipe flow outlets 5 on each side is non-uniformly distributed, wherein the distance between the pipe flow outlets 5 close to the center of the distribution pipe 4 is large, and the distance between the pipe flow outlets 5 far away from the center of the distribution pipe 4 is small.
In the liquid distribution pipe, due to the influence of friction resistance, the outlet flow rate close to the center of the distribution pipe 4 is larger, the spraying surface is wide, the outlet flow rate far away from the center is smaller, and the spraying surface is small. Therefore, the distribution pipe outflow ports 5 are arranged non-uniformly, the outlet distance close to the center is large, the outlet distance far away from the center is small, oil materials at the outlets can be enabled to be not interfered with each other due to the distribution, the distribution is uniform, the volume between the polar plates can be utilized to the maximum extent, and the separation efficiency is improved. The distribution pipe 4 is 3m long, small holes are symmetrically distributed on two sides, and uneven hole intervals are adopted for uniform liquid distribution. 50 holes were not evenly distributed on each side. Wherein the first small hole close to the center is 90mm away from the center, and the distance between the rear holes is 80mm, 70mm, 60mm and 50mm in sequence. The smaller the speed of the small hole farther from the center due to the influence of the friction resistance, the remaining hole pitch was uniformly set to 25 mm.
The cross-sectional areas of the pipe flow outlets 5 are uniformly and circularly shaped, and compared with a square outlet, the small circular holes have no edge corner friction, the friction is small, and the fluid flow is more stable and uniform.
The common electric dehydrator adopts a three-layer electrode plate form to form two strong electric fields, and the utility model discloses two field intensity settings to three-layer electrode plate formation. The oil-water mixture is divided into a plurality of strands by the special distributor and directly enters two strong electric fields instead of entering a water phase according to a traditional method, so that liquid distribution between the polar plates is more uniform, the difference of friction resistance is balanced due to the difference of pipe diameters of the upper distribution pipe and the lower distribution pipe, and the flow rate and the flow speed in the distribution pipes are close to the same value. Because the inlet liquid distribution component directly enters the two strong electric fields, the whole position of the oil inlet distributor is higher, the sedimentation height of the water phase is increased, the retention time of water drops is prolonged, the reduction of the oil content of the drained water is facilitated, and the oil-water separation efficiency is improved. Meanwhile, oil directly enters the polar plates, so that mixing with bottom water can be reduced, and the water content of incoming liquid is prevented from rising.
The utility model discloses a use: the water-containing crude oil flows in through the main flow guide pipe 1, then the crude oil is divided into three parts to enter the branches of the first-class branch flow guide pipe 2 with different pipe diameters, and the middle pipe is small in length, the pipes on two sides are large in length, and the flow cannot be uniformly distributed under the influence of friction resistance along the way, so that the flow and the flow velocity in the first-class branch flow guide pipe are uniform and consistent due to the fact that the middle pipe is small in diameter and the pipe diameters on two sides are gradually reduced from large to small. The incoming liquid continuously flows, then is divided into six parts at the lower side close to the electrode plate, enters each branch of the secondary branch flow guide pipe 3, then flows upwards, and finally enters 2 distribution pipes 4-a and 4-b between the electrode plate layers. After being uniformly distributed, the liquid uniformly flows out from the pipe flow outlet 5 and enters a high-strength electric field between the polar plates to carry out subsequent electric dehydration work.
Claims (6)
1. An electric dehydrator inlet liquid distribution component comprises a main flow guide pipe (1), and is characterized in that: the main flow guide pipe (1) is communicated with a first-level diversion pipe (2); the first-stage branched flow guide pipe (2) is communicated with the second-stage branched flow guide pipe (3) through a plurality of branches with different pipe diameters, and the second-stage branched flow guide pipe (3) is communicated with the distribution pipe (4) through a plurality of branches; and a plurality of pipe flow outlets (5) with different pipe intervals are arranged on the distribution pipe (4).
2. The electric dehydrator inlet fluid distribution element of claim 1, wherein: the first-stage diversion pipe (2) is provided with three branch pipes; the branched pipes positioned in the middle of the first-stage branched flow guide pipe (2) are small in pipe diameter, the pipe diameters of the branched pipes positioned at two ends are larger than that of the branched pipe positioned in the middle, and the branched flow guide pipe is composed of a straight pipe section (6) and a reducing pipe (7); the reducing pipe (7) is communicated with the second-level diversion pipe (3) after the pipe diameter is reduced towards the outlet direction.
3. An electric dehydrator inlet liquid distributing member as claimed in claim 1 or 2, wherein: the joint of the distribution pipe (4) and the secondary guide pipe (3) is positioned at the midpoint of the length of the distribution pipe (4).
4. The electric dehydrator inlet liquid distribution member of claim 3, wherein: the distribution pipe (4) is arranged in an upper layer and a lower layer, which are respectively an upper layer distribution pipe (4-a) and a lower layer distribution pipe (4-b), and the pipe diameters of the upper layer distribution pipe (4-a) and the lower layer distribution pipe (4-b) are different.
5. The electric dehydrator inlet liquid distribution member of claim 4, wherein: the distribution pipe is characterized in that a plurality of pipe flow outlets (5) arranged on the distribution pipe (4) are symmetrically distributed on two sides of the distribution pipe by taking the center of the distribution pipe (4) as a symmetry axis, and the distances among the pipe flow outlets (5) on each side are non-uniformly distributed, wherein the distances among the pipe flow outlets (5) close to the center of the distribution pipe (4) are large, and the distances among the pipe flow outlets (5) far away from the center of the distribution pipe (4) are small.
6. The electric dehydrator inlet liquid distribution member of claim 5, wherein: the cross-sectional area of a number of said pipe flow outlets (5) is circular.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082285.2U CN210826067U (en) | 2019-07-11 | 2019-07-11 | Liquid component is joined in marriage to electric dehydrator entry |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921082285.2U CN210826067U (en) | 2019-07-11 | 2019-07-11 | Liquid component is joined in marriage to electric dehydrator entry |
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| CN210826067U true CN210826067U (en) | 2020-06-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110317633A (en) * | 2019-07-11 | 2019-10-11 | 甘肃蓝科石化高新装备股份有限公司 | A kind of electric dehydrator entrance matches liquid component |
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2019
- 2019-07-11 CN CN201921082285.2U patent/CN210826067U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110317633A (en) * | 2019-07-11 | 2019-10-11 | 甘肃蓝科石化高新装备股份有限公司 | A kind of electric dehydrator entrance matches liquid component |
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