CN206343366U - A kind of pulse electro discharge electrode for de-plugging of well - Google Patents
A kind of pulse electro discharge electrode for de-plugging of well Download PDFInfo
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- CN206343366U CN206343366U CN201621435779.0U CN201621435779U CN206343366U CN 206343366 U CN206343366 U CN 206343366U CN 201621435779 U CN201621435779 U CN 201621435779U CN 206343366 U CN206343366 U CN 206343366U
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- electrode
- end cover
- insulated end
- shock wave
- utility
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Abstract
The utility model discloses a kind of pulse electro discharge electrode for de-plugging of well.According to electrohydraulic effect, capacitor storage electric energy is sparked by sparking electrode in a liquid is converted into shock wave energy, and shock wave can effectively release the blocking of surrounding well-case perforating, and whole sparking electrode is shaped as cylinder.Its structure includes：High-field electrode, low-field electrode, upper insulated end cover, lower insulated end cover.High-field electrode and low-field electrode symmetrical configuration, two electrode one end are cylinder, and the other end is hemisphere, and hemisphere surface is provided with some raised small columns.Electrode is connected through a screw thread with insulated end cover, and insulated end cover is bolted up and down, wherein lower insulated end cover is the face of cylinder of hollow out, so that shock wave is transferred out.The utility model adds energy conversion efficiency by the electrode shape that rationally designs, effectively reflected shock wave, sets raised small column to improve electrode life and discharge stability.
Description
Technical field
The utility model is related to a kind of power and mechanical energy conversion equipment, and more particularly to high-voltage pulse liquid electric discharge field is by electricity
The discharging structure of mechanical energy can be converted into.
Background technology
1955, especially the existing heavy current pulse liquid electric discharge of golden hair can produce huge machinery effect to former Soviet Union engineer
Should, and it is named as electrohydraulic effect（《Electrohydraulic effect》, Science Press, 1962）.Electrohydraulic effect has very in industrial circle
Big application prospect, realizes that electrohydraulic effect needs heavy current pulse generating means.The device can be used for plug removal in oil and water well, shale
Gas anatonosis, pulse drilling technique, catalase, eliminating sludge in pipe etc. are based on the field of " electrohydraulic effect " principle（《Pulse current skill
Art》, publishing house of Xi'an Communications University, 2008）.And sparking electrode is one of heavy current pulse generating means critical component, it will store up
The electric energy deposited is converted into shock wave by sparking in a liquid.The structure design of energy converter determines energy conversion effect
Rate, electrode life, discharge stability.
Structure and size, electrode gap distance of energy converter etc. all directly influence the parameter for producing shock wave, due to
It is that de-plugging is carried out to the perforation on the radial direction borehole wall, shock wave should try one's best and act on radial direction.Chinese patent（Application number：
85103629）Devise a kind of bell-shaped coaxial discharge electrode, 15 kilovolts of operating voltage.Chinese patent（Application number：
200820029050.2）Sparking electrode is point-plate shape formula, wherein point is cylindrical electrode, operating voltage is up to 30 kilovolts.China
Patent（Application number：201620323228.9）Devise a kind of electricity fire including two groups of sparking electrodes and two or more bearing bracket
Flower focus emission electrode head.Above-mentioned application belongs in arc discharge, appeal patent, and electric discharge is all concentrated on one point, and sparking electrode burns
Erosion is very fast, and influence of the electrode shape to energy ecology, axial impact wave energy are not fully taken into account during design electrode structure
It is wasted.
The content of the invention
In order to solve electrode material ablation problem, electrode life and energy ecology, the utility model are improved
Propose a kind of pulse electro discharge electrode for de-plugging of well.With a high-field electrode and a low-field electrode.This practicality
It is new can be in high voltage grade（Below 30kV）, high current grade（20kA）Lower steady operation.Discharge channel is in height
Piezoelectricity extremely on different salient points between be randomly formed, solve electric discharge concentrate the problem of, extend electrode life.The half of electrode
Bulbous configuration and the hollow processing of lower insulated end cover can make the utility model have higher energy conversion efficiency, make as many as possible
Energy act in perforation in the radial direction.
The utility model solves the technical scheme that its technical problem used：
The utility model includes four parts：High-field electrode, low-field electrode, upper insulated end cover, lower insulated end cover.Four
Part uses coaxial configuration, and high-field electrode is connected as one by screw thread with upper insulated end cover, and low-field electrode is by screw thread with
Insulated end cover is connected as one, and two insulated end covers are bolted.High-field electrode and low-field electrode are made of copper-tungsten.
Upper insulated end cover and lower insulated end cover use epoxy material.
The electricity being stored in impulse capacitor is quickly discharged in a liquid by discharge switch, sparking electrode, by liquid
Body transient evaporation formation vacuum chamber, huge shock wave is produced to surrounding, to release oil well perforation blocking.Electrode, which is not only played, to be turned
The effect of electric energy is changed, after discharging, shock wave is more discharged into radially vertical borehole wall direction to greatest extent, to improve energy
Measure utilization rate.Electrode shape is designed to dome-type by the utility model, can preferably reflect away shock wave, shock wave
Radial component can be transferred directly on the borehole wall, and axial component can reflex to radial direction by dome electrode, fully improved
Energy Efficient rate.Because the electric discharge of a pair of high-low pressure dome-type electrodes is concentrated in the apex of two spheres, wear to electrodes
Speed is larger, therefore, on surface there is provided some projections, raised summit and sphere summit in same plane, these it is raised and
Sphere summit is discharged at random, increases considerably electrode life, and does not influence the propagation of shock wave, when the abrasion of some salient point is tight
During weight, the discharge probability of the salient point will decline, and add discharge stability.And electrode gap can be adjusted, to produce not
With the energy of intensity, the actually required energy of de-plugging of well is adapted to.
The beneficial effects of the utility model are：1. dome-type electrode shape, is conducive to shock reflection to the vertical borehole wall
Direction, and lower insulated end cover hollow processing, can increase substantially effective utility of laser power；2. electrode surface sets raised
Small copper post, is conducive to scattered discharge position, it is to avoid electric discharge only occurs in the summit position of two halves ball motor, and extension electrode uses the longevity
Life, moreover it is possible to the discharge position that automatic rejection has been damaged.3. electrode gap can be adjusted freely, the energy of varying strength can be produced,
Adapt to actual.4. the utility model is simple in construction, cost is relatively low, using stable.
Brief description of the drawings
Fig. 1 is the utility model pulse electro discharge electrode structure schematic diagram, in figure：1 bolts and nuts, insulated end cover on 2,
3 high-field electrodes, 4 times insulated end covers, 5 low-field electrodes, 6 raised copper posts.
Fig. 2 is the utility model dome-type electrode stereogram, in figure：5 low-field electrodes, 6 raised copper posts, 7 hemisphere summits
Tangent plane.Raised copper post and hemisphere summit is contour.
Fig. 3 is utility model works scene photo, 8 vehicular high-power HVDC generating means, 9 energy-storage capacitors, 10
Three electrode switch, 11 sparking electrodes, 12 trigger pulses.
Fig. 4 is utility model works schematic diagram, 8 high-voltage direct current sources, 13 coaxial sheath transmission cables, 9 energy storage electricity
Container, 10 3 electrode switch, 12 trigger pulses, 11 sparking electrodes.
Embodiment
Below in conjunction with the accompanying drawings and embodiment describes content of the present utility model in detail.
As shown in Figure 1：The utility model includes high-field electrode 3, low-field electrode 5, upper insulated end cover 2, lower insulated end cover 4.
Four parts use coaxial configuration, and high-field electrode 3 is connected as one with upper insulated end cover 2 by screw thread, can realized by screw thread
Electrode is moved up and down.Low-field electrode 5 is connected as one by screw thread with lower insulated end cover 4, and two insulated end covers are connected by bolt
Connect.High-field electrode 3 and low-field electrode 5 are using high temperature resistant, corrosion resistant metal material, and such as copper-tungsten is made.Upper insulated end cover 2
Insulating materials, such as epoxy material are used with lower insulated end cover 4.
Fig. 2 is low-field electrode structural representation of the present utility model, and the low-field electrode 5 is with raised dome-type electricity
Pole, electrode one end is cylinder, and the other end is hemisphere, and there are some raised cylinders 6, raised summit and half in hemisphere surface
The tangent plane 7 that top dome is selected is overlapped, raised cylinder 6 and electrode simultaneous manufacturing.Two electrode align centers are installed, and gap can be with reality
Border service condition regulation.
Fig. 3 is working site figure of the present utility model, and vehicular high-power high voltage direct current flow generating apparatus 8 is placed in engineering truck
It is interior, delivered the power at downhole perforation region, sparked conducting by sparking electrode 11 by 3km or so coaxial cables,
About 20kA or so heavy current is produced in oil water mixture, region of discharge moment forms vacuum chamber, put by the utility model
Electrode 11 reaches that de-plugging of well is acted on to borehole wall launching shock ripple.Treat after the completion of the segment perforated zone de-plugging, rise is discharged
The position in well of electrode 11, de-plugging is repeated to next section of perforated zone, until the success of whole mouth de-plugging of well.
Fig. 4 is utility model works schematic diagram.High-voltage DC power supply 8 charges to energy-storage capacitor 9, electricity to be charged
When pressure reaches predeterminated voltage, trigger pulse 12 turns on three electrode switch 10, and sparking electrode 11 discharges, and produces heat, light, power
Etc. the energy of form.By the special electrode shape of the utility model, most of energy is radially launched, to penetrating
Hole carries out de-plugging effect.
The utility model can be applied to because perforation is blocked and is occurred in the oil well that oil production declines, can also be direct or suitable
When transformation is used for the neck that shale gas anatonosis, pulse drilling technique, catalase, eliminating sludge in pipe etc. are based on " electrohydraulic effect " principle
Domain.
It by the electrode structure of the present embodiment, can make after arc discharge, more shock wave energies are applied to the borehole wall, extend
Electrode life, the discharge position that automatic rejection has been damaged can produce the energy of varying strength, adapt to actual demand.This
Utility model is simple in construction, and cost is relatively low, using stable.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model
Protection domain within.
Claims (2)
1. a kind of pulse electro discharge electrode for de-plugging of well, by high-field electrode, low-field electrode, upper insulated end cover, lower insulation
End cap is constituted, it is characterised in that：The electrode is that, with raised dome-type electrode, electrode one end is cylinder, and the other end is
There are some raised cylinders on hemisphere, hemisphere surface, and two electrode align centers are installed, and gap can be entered by rotation electrode
Row regulation；The insulated end cover is divided into insulated end cover and lower insulated end cover, and the two is bolted, and lower insulated end cover is outer
There is the hollow cylinder of hollow out on surface.
2. a kind of pulse electro discharge electrode for de-plugging of well according to claim 1, it is characterised in that：The high pressure
Electrode is made up with low-field electrode of metal material, and upper insulated end cover and lower insulated end cover are made up of insulating materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621435779.0U CN206343366U (en) | 2016-12-26 | 2016-12-26 | A kind of pulse electro discharge electrode for de-plugging of well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621435779.0U CN206343366U (en) | 2016-12-26 | 2016-12-26 | A kind of pulse electro discharge electrode for de-plugging of well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206343366U true CN206343366U (en) | 2017-07-21 |
Family
ID=59317374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621435779.0U Expired - Fee Related CN206343366U (en) | 2016-12-26 | 2016-12-26 | A kind of pulse electro discharge electrode for de-plugging of well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206343366U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106540871A (en) * | 2016-12-26 | 2017-03-29 | 哈尔滨理工大学 | A kind of pulse electro discharge electrode for de-plugging of well |
| CN108289364A (en) * | 2018-01-05 | 2018-07-17 | 安徽理工大学 | A kind of dielectric barrier discharge plasma auxiliary combustion equipment of water circulation cooling |
| CN108594152A (en) * | 2018-07-19 | 2018-09-28 | 北京丹华正齐电力技术有限公司 | A kind of two-way controllable arc generator |
-
2016
- 2016-12-26 CN CN201621435779.0U patent/CN206343366U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106540871A (en) * | 2016-12-26 | 2017-03-29 | 哈尔滨理工大学 | A kind of pulse electro discharge electrode for de-plugging of well |
| CN108289364A (en) * | 2018-01-05 | 2018-07-17 | 安徽理工大学 | A kind of dielectric barrier discharge plasma auxiliary combustion equipment of water circulation cooling |
| CN108594152A (en) * | 2018-07-19 | 2018-09-28 | 北京丹华正齐电力技术有限公司 | A kind of two-way controllable arc generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170721 Termination date: 20171226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |