CN108048128B - External electrostatic coalescer of transformer - Google Patents
External electrostatic coalescer of transformer Download PDFInfo
- Publication number
- CN108048128B CN108048128B CN201810031910.4A CN201810031910A CN108048128B CN 108048128 B CN108048128 B CN 108048128B CN 201810031910 A CN201810031910 A CN 201810031910A CN 108048128 B CN108048128 B CN 108048128B
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- CN
- China
- Prior art keywords
- voltage
- electrode assembly
- voltage electrode
- junction box
- metal frame
- Prior art date
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- 239000002184 metal Substances 0.000 claims abstract description 49
- 230000018044 dehydration Effects 0.000 claims abstract description 9
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 claims abstract description 4
- 239000010779 crude oil Substances 0.000 claims description 22
- 239000003822 epoxy resin Substances 0.000 claims description 5
- 229920000647 polyepoxide Polymers 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 3
- 238000010168 coupling process Methods 0.000 claims 3
- 238000005859 coupling reaction Methods 0.000 claims 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 22
- 239000002245 particle Substances 0.000 abstract description 13
- 230000005684 electric field Effects 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 10
- 208000005156 Dehydration Diseases 0.000 description 7
- 239000007788 liquid Substances 0.000 description 7
- 239000003921 oil Substances 0.000 description 6
- 239000000839 emulsion Substances 0.000 description 5
- 238000004062 sedimentation Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- 238000004581 coalescence Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004720 dielectrophoresis Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- C10G33/02—Dewatering or demulsification of hydrocarbon oils with electrical or magnetic means
Abstract
The application provides an external electrostatic coalescer of a transformer, which comprises a high-voltage electrode assembly, a metal hose, a first metal frame support, a fixing nut, a high-voltage junction box, an insulating connecting piece, a low-voltage electrode assembly and a second metal frame support, wherein the high-voltage electrode assembly and the low-voltage electrode assembly are composed of a plurality of electrode tubes which are linearly arranged, and adjacent electrodes are respectively connected with high voltage and ground; the high-voltage electrode assembly is firstly connected with an insulating connecting piece, the insulating connecting piece is connected with a metal hose, and the metal hose is connected with the high-voltage junction box; the high-voltage junction box is connected with an external transformer through a high-voltage cable, and the external transformer is positioned at the top of the electric dehydration zone and outside the three-phase separator; the low-voltage electrode assembly is welded with the second metal frame support and grounded. The electrostatic coalescer has a simple structure, is convenient to maintain, forms a non-uniform electric field between electrodes, increases the coalescing effect of water particles, and improves the dewatering efficiency.
Description
Technical Field
The application relates to the technical field of crude oil dehydration equipment, in particular to an external electrostatic coalescer of a transformer.
Background
Oil and gas gathering and transportation are important links of crude oil production, wherein dehydration treatment of crude oil is a key step. At present, a three-phase separator and an electric dehydrator are mainly adopted for dehydration of produced liquid, and along with the exploitation of land oil fields, the water content of the produced liquid gradually rises in the middle and later stages, and the phenomenon that the water content in oil at an oil outlet of the three-phase separator does not reach the standard often occurs.
The basic principle of the electric dehydrator in the prior art is that crude oil enters the electric dehydrator from bottom to top, water particles therein are coalesced and have increased particle size under the action of an electric field, and when gravity is greater than the force of the electric field, the crude oil is settled downwards, and water is discharged from the bottom of the dehydrator. The scheme shortens the sedimentation time and improves the separation efficiency, but when the fluid state in the conventional electric dehydrator is laminar, and the water content in crude oil is low, the water particles are relatively large in distance, and effective coalescence can be completed only after a long time, so that the sedimentation time is long, and the equipment is huge in volume; when the water content in crude oil is high, the water particle spacing is small, the phenomenon of crossing an electric field is easy to occur, the produced liquid contains a large amount of water along with the development of an oil field to enter a high water content stage, the exposed electrode in the produced liquid is easy to corrode, the phenomenon of short circuit is easy to occur, and the equipment is unstable to operate; the electrodes used for the downstream sides of the electric dehydrator and the three-phase separator are all metal plates, a uniform electric field is formed between the electrodes, dehydration of low-water crude oil is not facilitated, the electrodes of the coalescent device and the coalescent module adopt tubular electrodes, but fluid flows radially along the electrodes, coalesced water particles collide with the electrodes and are easy to rupture again.
Disclosure of Invention
The application aims to provide an external electrostatic coalescer of a transformer, which has a simple structure and is convenient to maintain, a non-uniform electric field is formed between electrodes, the coalescing effect of water particles is improved, and the dewatering efficiency is improved.
The object of the application is achieved by:
an external electrostatic coalescer of transformer, electrostatic coalescer includes high-voltage electrode assembly, metal collapsible tube, first metal frame support, fixation nut, high-voltage junction box, insulating connecting piece, voltage electrode assembly and second metal frame support, and wherein each part relation of connection is:
the high-voltage electrode assembly and the high-voltage electrode assembly are composed of a plurality of electrode tubes which are in linear arrangement, and adjacent electrodes are respectively connected with high voltage and ground;
the high-voltage electrode assembly is firstly connected with an insulating connecting piece, the insulating connecting piece is connected with a metal hose, and the metal hose is connected with the high-voltage junction box;
the high-voltage junction box is connected with an external transformer through a high-voltage cable, and the external transformer is positioned at the top of the electric dehydration zone and outside the three-phase separator;
the low-voltage electrode assembly is welded with the second metal frame support and grounded.
According to the technical scheme provided by the application, the electrostatic coalescer is simple in structure and convenient to maintain, a non-uniform electric field is formed between the electrodes, the coalescing effect of water particles is improved, and the dewatering efficiency is improved.
Drawings
The advantages of the external electrostatic coalescer of a transformer according to the application can be better understood by means of the accompanying drawings, without constituting a limitation of the external electrostatic coalescer of a transformer according to the application.
Fig. 1 is a schematic structural diagram of an external electrostatic coalescer of a transformer according to an embodiment of the application;
FIG. 2 is a schematic diagram of an insulation connecting piece according to an embodiment of the present application;
FIG. 3 is a schematic view of a high voltage electrode assembly according to an embodiment of the present application;
FIG. 4 is a schematic diagram of the connection of the insulating connector, the high voltage electrode and the junction box according to the embodiment of the present application;
FIG. 5 is a schematic diagram of a high voltage junction box according to an embodiment of the present application;
FIG. 6 is a schematic illustration of an electrostatic coalescer assembly according to an embodiment of the application;
fig. 7 is a schematic diagram of another arrangement of electrode tubes according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to fall within the scope of the application.
An embodiment of the present application will be described in further detail below with reference to the accompanying drawings, and as shown in fig. 1, a schematic structural diagram of an external electrostatic coalescer of a transformer provided by the embodiment of the present application is shown, where the electrostatic coalescer includes a high-voltage electrode assembly 1, a metal hose 2, a first metal frame support 3, a fixing nut 4, a high-voltage junction box 5, an insulating connecting piece 6, a high-voltage electrode assembly 7, and a second metal frame support 8, where connection relationships of the parts are:
the high-voltage electrode assembly 1 and the high-voltage electrode assembly 7 are composed of a plurality of electrode tubes and are in linear arrangement, and adjacent electrodes are respectively connected with high voltage and ground;
the high-voltage electrode assembly 1 is firstly connected with an insulating connecting piece 6, the insulating connecting piece 6 is connected with a metal hose 2, and the metal hose 2 is connected with the high-voltage junction box 5;
the high-voltage junction box 5 is connected with an external transformer through a high-voltage cable, and the external transformer is positioned at the top of the electric dehydration zone and outside the three-phase separator;
the low-voltage electrode assembly 7 is welded with the second metal frame support 8 and is grounded.
In specific implementation, the two metal frame supports 3 and 8 all adopt a 'king' structure, so that crude oil can flow along the axial direction of the electrode, and electrode mounting holes which are arranged linearly are arranged on the two metal frame supports 3 and 8 and are used for fixing the electrode tube.
Fig. 2 is a schematic structural view of an insulating connector according to an embodiment of the present application, fig. 3 is a schematic structural view of a high-voltage electrode assembly according to an embodiment of the present application, and fig. 2 and 3 are combined: the insulating connecting piece 6 is a rotary piece as a whole and hollow inside, and mainly comprises a connecting part with the high-voltage electrode assembly 1, a connecting part with the metal hose 2 and a connecting part with the first metal frame support 3, wherein:
the connecting part of the high-voltage electrode assembly 1 adopts a cylindrical groove, so as to play a role in radial and axial fixation;
the connecting part with the metal hose 2 is provided with internal threads, so that the connection with the quick connector of the metal hose 2 is facilitated;
the connection part with the first metal frame support 3 is provided with a boss for axial fixation and an external thread for connection with the fixing nut 4.
The high-voltage electrode assembly 1 is insulated by epoxy resin 10, and the high-voltage wire 9 and the high-voltage electrode assembly 1 are welded together and led out from the inside of the insulating connecting piece 6.
Fig. 4 is a schematic diagram of connection between an insulating connector, a high-voltage electrode and a junction box according to an embodiment of the present application, and referring to fig. 1 and 4: the insulating connecting piece 6 is fixed with the first metal frame support 3 through the fixing nut 4. The high-voltage wire 9 is welded to the high-voltage electrode assembly 1, then passes through the insulating connection 6 and then through the metal hose 2 to the high-voltage junction box 5.
Fig. 5 is a schematic structural diagram of a high-voltage junction box according to an embodiment of the present application, where the high-voltage junction box 5 includes a first quick connector 22, a junction box fixing frame 23, and a second quick connector 24, and the first quick connector is as follows:
the first quick connector 22 is connected with the high-voltage electrode assembly 1 through a metal hose 2, and the second quick connector 24 is connected with an external transformer through a high-voltage cable;
the branch box fixing frames 23 comprise two branch box fixing frames which are respectively welded at two ends of the high-voltage branch box 5.
In a specific implementation, the high-voltage junction box 5 is in a cuboid structure, and a plurality of first quick connectors 22 are arranged on the right side surface and correspond to the connectors of the high-voltage electrode assembly 1; a second quick connector 24 is arranged on the left side surface and is used for being connected with an external transformer; an L-shaped junction box fixing frame 23 is welded on the left side surface and the right side surface and is used for fixing the high-voltage junction box 5; the high-voltage joint inside the high-voltage junction box 5 is insulated and sealed by epoxy resin.
The following describes the installation and use process of the electrostatic coalescer according to the embodiment of the application in detail by way of specific example, and fig. 6 is a schematic diagram of the installation mode of the electrostatic coalescer according to the embodiment of the application, mainly comprising the electrostatic coalescer 19, the external transformer 11, the external power supply 21 and the three-phase separator 14, wherein:
the external transformer 11 and the external power supply 21 are arranged at the top of the outer side of a sedimentation zone of the three-phase separator 14, the electrostatic coalescer 19 is connected with a high-voltage junction box, the electrostatic coalescer 19 is arranged at the left side of a weir plate 17 at the downstream side of the three-phase separator 14, the shell of the three-phase separator 14 is grounded 15, the oil-gas-water mixed liquid enters from an inlet 12 of the three-phase separator 14, gas-liquid separation is realized through an inlet baffle 13, then the mixed liquid passes through a rectification zone and reaches the sedimentation zone, water particles with large particle sizes in the crude oil emulsion are downwards settled and are discharged from a water outlet 16, and oil-water separation is realized.
The crude oil emulsion after primary separation enters an electrostatic coalescer 19, residual water particles in the crude oil emulsion are coalesced, the particle size is increased and the crude oil emulsion is settled down for separation under the action of a non-uniform electric field formed by an electrode tube, further dehydration of the crude oil emulsion is realized, dehydrated crude oil enters a crude oil coalescence zone after passing through a weir plate 17 and is discharged from an oil outlet 18, and gas separated from the crude oil is discharged from a gas outlet 20.
In addition, in a specific implementation, the electrode tube of the high-voltage electrode assembly 1 may also adopt other arrangement modes, as shown in fig. 7, which is a schematic diagram of other arrangement modes of the electrode tube provided by the embodiment of the present application, where the electrode tube of the high-voltage electrode assembly 1 may adopt a circumferential arrangement, and two metal frame brackets correspondingly adopt a ring shape or a rod shape.
It should be noted that the coalescer of the present application may be used in combination with a plurality or with other coalescers as desired for efficiency.
In summary, the electrostatic coalescer provided by the application has the following advantages:
1) In order to enable crude oil to axially enter and exit the coalescer, the application provides a simple metal frame support structure, crude oil axially flows along an electrode, water particles in the crude oil are coalesced by means of dielectrophoresis force under the action of a non-uniform electric field, and the dewatering efficiency is improved.
2) The internal structure of the electrostatic coalescer is simplified, so that the processing technology is simple, the size of the electrode can be properly changed according to the application range, and the electrostatic coalescer is convenient to install and maintain.
3) The connection mode of the electrode group and the transformer is simplified, and a high-voltage junction box is added between the high-voltage electrode group and the transformer, so that the connection is simple and reliable.
4) The coalescer is arranged in the three-phase separator, the axial direction of the electrode is consistent with the axial direction of the cylinder body of the three-phase separator, the electrode axially enters an alternating current electric field, the action time of the electric field is long, the subsequent sedimentation time is shortened, and the coalescer is suitable for dewatering low-water crude oil.
5) In order to increase the reliability of the coalescer, the high-voltage electrode is insulated around, the high-voltage connector in the high-voltage junction box is also sealed by epoxy resin, and the insulation, heat resistance and corrosion resistance of the epoxy resin are fully utilized, so that the high-voltage electrodes are not affected by each other.
The foregoing is only a preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present application should be included in the scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims (4)
1. The utility model provides an external electrostatic coalescer of transformer, its characterized in that, electrostatic coalescer includes high-voltage electrode subassembly, metal collapsible tube, first metal frame support, fixation nut, high-voltage junction box, insulating connecting piece, high-voltage electrode subassembly and second metal frame support, and wherein each part relation of connection is:
the high-voltage electrode assembly and the high-voltage electrode assembly are composed of a plurality of electrode tubes which are in linear arrangement, and adjacent electrodes are respectively connected with high voltage and ground;
the high-voltage electrode assembly is firstly connected with an insulating connecting piece, the insulating connecting piece is connected with a metal hose, and the metal hose is connected with the high-voltage junction box;
the high-voltage junction box is connected with an external transformer through a high-voltage cable, and the external transformer is positioned at the top of the electric dehydration zone and outside the three-phase separator;
the second metal frame support is welded with the second metal frame support, and is grounded;
the first metal frame support and the second metal frame support are of a Chinese character 'wang' shape structure, crude oil can flow along the axial direction of the electrode conveniently, and electrode mounting holes which are arranged linearly are formed in the two metal frame supports and used for fixing the electrode tube;
the whole of insulating connecting piece is the rotating member, and inside cavity, include with high-voltage electrode assembly's coupling portion, with metal collapsible tube's coupling portion, and with the coupling portion of first metal frame support, wherein:
the connecting part of the high-voltage electrode assembly and the high-voltage electrode assembly adopts a cylindrical groove, so that the radial and axial fixing effects are realized;
the connecting part of the metal hose is provided with an internal thread, so that the metal hose is convenient to connect with a metal hose quick connector;
the connecting part with the first metal frame support is provided with boss and external screw thread, and the boss is used for axial fixity, and the external screw thread is used for being connected with fixation nut.
2. The electrostatic coalescer of claim 1, wherein,
the high-voltage electrode assembly is subjected to epoxy resin insulation treatment, and the high-voltage wire and the high-voltage electrode assembly are welded together and led out through the inside of the insulation connecting piece.
3. The electrostatic coalescer of claim 1, wherein the high pressure junction box comprises a first quick connector, a junction box mount, and a second quick connector, wherein:
the first quick connector is connected with the high-voltage electrode assembly through a metal hose, and the second quick connector is connected with the external transformer through a high-voltage cable;
the junction box fixing frame comprises two junction boxes which are welded at two ends of the high-voltage junction box respectively.
4. The electrostatic coalescer of claim 1, wherein,
the electrode tubes of the high-voltage electrode assembly are circumferentially arranged, and the two metal frame supports are correspondingly annular or rod-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810031910.4A CN108048128B (en) | 2018-01-12 | 2018-01-12 | External electrostatic coalescer of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810031910.4A CN108048128B (en) | 2018-01-12 | 2018-01-12 | External electrostatic coalescer of transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108048128A CN108048128A (en) | 2018-05-18 |
| CN108048128B true CN108048128B (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810031910.4A Active CN108048128B (en) | 2018-01-12 | 2018-01-12 | External electrostatic coalescer of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108048128B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441479A (en) * | 2019-08-14 | 2019-11-12 | 中国石油化工股份有限公司 | Dynamic experimental device and method in a kind of built-in electrostatic coalescer room of container |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB636632A (en) * | 1946-09-28 | 1950-05-03 | Westinghouse Electric Int Co | Improvements in or relating to electrostatic precipitators |
| CN203048887U (en) * | 2012-12-25 | 2013-07-10 | 北京石油化工学院 | Electrostatic coalescence-separation device and electrostatic coalescence-separation system |
| CN203668316U (en) * | 2014-01-22 | 2014-06-25 | 北京迪威尔石油天然气技术开发有限公司 | Electrostatic coalescence module, device and system |
| CN204714758U (en) * | 2015-04-28 | 2015-10-21 | 北京石油化工学院 | A kind of electrostatic coalescence module and triphase separator |
| CN205974407U (en) * | 2016-08-03 | 2017-02-22 | 北京石油化工学院 | Tubular electrostatic coalescence ware |
| CN207998583U (en) * | 2018-01-12 | 2018-10-23 | 北京石油化工学院 | A kind of transformer external electrostatic coalescer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO332147B1 (en) * | 2010-04-28 | 2012-07-09 | Hamworthy Plc | Electrostatic coalescing device |
-
2018
- 2018-01-12 CN CN201810031910.4A patent/CN108048128B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB636632A (en) * | 1946-09-28 | 1950-05-03 | Westinghouse Electric Int Co | Improvements in or relating to electrostatic precipitators |
| CN203048887U (en) * | 2012-12-25 | 2013-07-10 | 北京石油化工学院 | Electrostatic coalescence-separation device and electrostatic coalescence-separation system |
| CN203668316U (en) * | 2014-01-22 | 2014-06-25 | 北京迪威尔石油天然气技术开发有限公司 | Electrostatic coalescence module, device and system |
| CN204714758U (en) * | 2015-04-28 | 2015-10-21 | 北京石油化工学院 | A kind of electrostatic coalescence module and triphase separator |
| CN205974407U (en) * | 2016-08-03 | 2017-02-22 | 北京石油化工学院 | Tubular electrostatic coalescence ware |
| CN207998583U (en) * | 2018-01-12 | 2018-10-23 | 北京石油化工学院 | A kind of transformer external electrostatic coalescer |
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| Publication number | Publication date |
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| CN108048128A (en) | 2018-05-18 |
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