CN201345617Y - Coaxial downhole type high-voltage DC power supply - Google Patents
Coaxial downhole type high-voltage DC power supply Download PDFInfo
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- CN201345617Y CN201345617Y CNU2008202285636U CN200820228563U CN201345617Y CN 201345617 Y CN201345617 Y CN 201345617Y CN U2008202285636 U CNU2008202285636 U CN U2008202285636U CN 200820228563 U CN200820228563 U CN 200820228563U CN 201345617 Y CN201345617 Y CN 201345617Y
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Abstract
The utility model discloses a coaxial downhole type high-voltage DC power supply, which mainly solves the existing problems of low power efficiency, low water pressure resistance and low working environment temperature. The power supply comprises main parts and a shell structure; and a transformer core (4), a silicon stack rectifier bridge (6), a high-voltage electrode (9) and a thermal expansion cavity (1) in the main parts are fixedly connected as a whole by insulative supporting pieces (2), (5), (7) and (8), and are sealed in an outer cylinder (14) which is filled with high-temperature resistant silicon oil media (16). Three sintering sealing plugs (15) are arranged on the shell of the bridle (13) in the shell structure, and silicon grease (11) is filled in the cavity body. The inner electrode and the outer electrode of the sintering sealing plugs are respectively connected with the primary leading wire and the external cable of an intermediate-frequency booster transformer, and the external cable is connected with the outer cylinder (14) by the bridle (13). The utility model can realize the outputs of 4KW power efficiency and 30KV high voltage, and ensure the normal underwater operation at the pressure of 50 MPa and temperature of 150 DEG C.
Description
Technical field
The utility model belongs to electronic applications, and particularly a kind of DC high-voltage power supply is used for oil well and is the quick store electrical energy of underground equipment, improves the oil well production increasing amount.
Background technology
Along with the development of oil field industry, the performance of petroleum drilling and mining device has been proposed more and more higher requirement, the high specific energy energy storage capacitor in the DC high-voltage power supply of down-hole practicality and down-hole is exactly one of critical component that improves the petroleum drilling and mining technology.The function that high-voltage DC power supply is realized is instrument, the power devices that needs high voltage source for the down-hole, perhaps is the high specific energy energy storage capacitor charging in down-hole.Realize in the device of discharge in water in the down-hole,, must improve the electric current of discharge, and improve the inductance that discharging current must improve energy storage capacity and reduce discharge loop in order to improve shock wave peak pressure.Improve energy storage capacity and need more energy storage capacitor and more powerful high-voltage DC power supply, land energy storage type electrical pulse device has adopted energy storage on a large amount of capacitors in ground exactly, by high-tension cable discharging current is delivered to the down-hole, cause equipment huge, complicated, what more be difficult to accept is that powerful discharging current causes 95% electric energy consumption to be dispersed in the conducting cable, cause the accelerated ageing of cable, greatly shortened the life-span of cable.After having adopted the down-hole energy storage technology,, adopted the capacitor of larger capacity owing to be subjected to the restriction of insulation technology.And charging voltage can not significantly improve.After the operating voltage of energy storage capacitor improves, the unique obstacle that improves discharging current is exactly the high-voltage DC power supply that requirement has enough power, that is to say, the high-voltage DC power supply that charges for energy storage capacitor not only requires to improve voltage, and requirement has certain power, move under certain repetition rate with implement device, operating voltage is low, power is little, the tolerance defective that water pressure is low and operating ambient temperature is low and present down-hole high pressure DC power supply all exists, and influences the energy storage effect.
The utility model content
The purpose of this utility model is to overcome the defective of prior art, provide a kind of operating voltage the high and high-power coaxial formula high-voltage DC power supply of going into the well, to realize that the output high pressure can satisfy the requirement of energy storage capacitor operating voltage, power output can guarantee the operating frequency requirement of complete equipment per minute 3～6 times, and the tolerance water pressure can reach the operate as normal at 50MPa.
For achieving the above object, the high-voltage DC power supply that the utility model provides, comprise transformer, rectification circuit and shell structure, it is characterized in that, transformer adopting intermediate frequency step-up transformer, rectification circuit adopts the silicon stack rectifier bridge, and shell structure comprises outer cylinder body and head harness, the iron core of this intermediate frequency step-up transformer and line bag, silicon stack rectifier bridge and high-field electrode are fixed into an integral body by insulated support, are sealed in the high temperature resistant silicone oil in the outer cylinder body.
The iron core employing length-width ratio of described intermediate frequency step-up transformer is 6 times an Idiotype rectangle iron core, and the primary and secondary line holds on same iron core column.The line bag of this intermediate frequency step-up transformer supports by first insulated support and second insulated support at iron core two ends, the silicon stack rectifier bridge is connected by second insulated support, the 3rd insulated support and the 4th insulated support, high-field electrode is installed on the 4th insulated support, this first insulated support is a terraced structure, is with the thermal expansion chamber above.
Described urceolus body lumen wall adopts and can improve its intensity through heat treatment and reach high-strength seamless steel pipe container more than the anti-static pressure 50MPa, and the thermal expansion chamber is placed on the top of single-unit container.
The housing of described head harness is provided with three sintering sealing plugs, be marked with silicone grease in the cavity, the interior survey electrode of these three sintering sealing plugs is connected with earth connection with the elementary lead-in wire of intermediate frequency step-up transformer, lateral electrode is connected with the external cable heart yearn, and the crust of external cable is connected with outer cylinder body by head harness.
Resistant to elevated temperatures fluorubber is adopted in described thermal expansion chamber, size greater than silicone oil 150 ℃ the time because the volume that thermal expansion increased.
Operation principle of the present utility model is: the external cable of ground power supply through going into the well provides frequency for the intermediate frequency step-up transformer is elementary be the above voltage of intermediate frequency of 200V of 1000Hz, this intermediate frequency step-up transformer is exported to bridge rectifier through 150 times after boosting, the high-pressure side of bridge rectifier is output as energy storage capacitor charging, the low-pressure end of bridge rectifier receive with energy storage capacitor shell altogether on.
DC power supply ratio under the utility model and the existing well has following advantage:
1. owing to adopt the intermediate frequency step-up transformer, thereby can be under identical power output, reduce the volume of transformer core greatly, thereby reduce the volume of transformer and improve power output, can in diameter 102mm and length 1200mm cylinder, realize the power output of 4kW.
2. owing to adopt the solid insulation strutting piece to connect transformer and rectification circuit, and it is immersed in solid and liquid composite insulation structure in the silicone oil, has greatly improved insulation property, make the output voltage of power supply can bring up to 30kV.
3. owing to adopt high temperature insulating material and thermal expansion chamber integrated structure, improved the working temperature to 150 ℃ of power supply.
4. owing to adopt sintering sealing plug and silicone grease double sealing structure, and adopt the high-strength seamless steel pipe container to make shell, guaranteed the water sealing property under the 50MPa hydrostatic pressing.
Test shows, the utility model is operate as normal under 50MPa pressure and the 150 ℃ of temperature under water, and the energy storage capacitor of support performance voltage 30kV and capacity 10 μ F is realized the frequency that discharges and recharges of per minute 3～6 times.
Description of drawings
Fig. 1 is a main structure chart of the present utility model;
Fig. 2 is shell structure figure of the present utility model;
Fig. 3 is an electrical connection graph of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is done and to be described in further detail.
With reference to Fig. 1 and Fig. 3, main part of the present utility model comprises: intermediate frequency step-up transformer, rectification circuit, thermal expansion chamber, four insulated supports and high-field electrode.Transformer adopting intermediate frequency step-up transformer 23 wherein, the length-width ratio of its iron core 4 is 6 times an Idiotype rectangle iron core, and the primary and secondary line holds on same iron core column, and interlayer adopts the high NOMEX insulating paper of dielectric strength; Transformer line bag 3 is made up of primary coil and secondary coil, and primary and secondary coil winding is on same iron core column, to improve magnetic coupling efficient and transformer efficiency; Rectification circuit adopts the rectifier bridge of being made up of four high voltage silicon stacks 6, and secondary lead C, the D of intermediate frequency step-up transformer transformer are connected on the corresponding points of four high voltage silicon stacks.This intermediate frequency step-up transformer 23 and silicon stack rectifier bridge 6 are connected by insulated support, promptly first insulated support 2 and second insulated support 5 block intermediate frequency step-up transformer iron core 4, to support transformer line bag 3, second insulated support 5, the 3rd insulated support 7 and the 4th insulated support 8 block four high voltage silicon stacks of silicon stack rectifier bridge 6, high-field electrode 9 is installed on the 4th insulated support 8, this first insulated support 2 is a terraced structure, be with thermal expansion chamber 1 above, these parts are done as a whole, be sealed in the shell body 14 and be immersed in the high temperature resistant silicone oil 16 of liquid insulating medium, by solid and liquid composite insulation structure, to improve dielectric strength in the down-hole confined space.This shell body 14 adopts high-strength seamless steel pipe, under the condition that guarantees volume, can improve its intensity and reach more than the anti-static pressure 50MPa.The material of this expansion chamber 1 adopts resistant to elevated temperatures fluorubber manufacturing, its size during greater than 150 ℃ silicone oil because the volume that thermal expansion increases.
With reference to Fig. 2 and Fig. 3, shell structure of the present utility model partly comprises: outer cylinder body 14, head harness 13, high-tension insulator 17, high pressure extraction pole 18 and high pressure end socket 19.Be marked with insulation silicone oil 16 in this outer cylinder body 14.This head harness housing is provided with three sintering sealing plugs 15, is marked with silicone grease 11 in the cavity, and by sealing screw 12 sealings, to guarantee the water sealing property under the 50MPa hydrostatic pressing.This high pressure extraction pole 18 is fixed on the high-tension insulator 17, and high-tension insulator 17 is fixed on the high pressure end socket 19, and high pressure end socket 19 is fixed on the outer cylinder body 14.High-voltage DC power supply main body shown in Figure 1 places outer cylinder body 14 from the right side, high-field electrode 9 presses closer the inwall that high pressure extraction pole 18, the first insulated supports 2, second insulated support 5, the 3rd insulated support 7 and the 4th insulated support 8 tightly are stuck in outer cylinder body 14.The elementary lead-in wire 20,21 of intermediate frequency step-up transformer 23 and earth connection 22 are welded on the interior survey electrode of three sintering sealing plugs 15, the external cable heart yearn is introduced by the port in head harness 13 left sides, be welded on the sintering sealing plug lateral electrode, and fixing by cable hold-down screw 10.This outer cylinder body 14 is connected with the external cable crust by head harness 13, and the diameter of outer cylinder body is controlled in the 102mm, and length is controlled in the 1200mm, adopts 35CrMo materials processing to become the thick chamber wall of 5mm, to bear the hydraulic pressure of 50MPa.
Intermediate frequency step-up transformer of the present utility model can obtain 150 times no-load voltage ratio under 6 times of length-width ratios, and has the power of 4kW; Adopt high-temperature material to make support insulators, and under silicone oil compound inslation condition, can export the 30kV high pressure; After having adopted the thermal expansion chamber, can under 150 ℃ of conditions, work.Actual measurement shows, the utility model is at ground 600V voltage, and through after the cable transmission of going into the well, can be the charging of 10 μ F energy storage capacitors, makes complete equipment keep the operating frequency of per minute 3～6 times.
Above-mentioned execution mode only is a preferred embodiment of the present utility model, does not constitute any restriction of the present utility model, and any improvement under the utility model scheme all belongs to the row of protection of the present utility model.
Claims (9)
1. high-voltage DC power supply that is used for underground work, comprise transformer, rectification circuit and shell structure, it is characterized in that, transformer adopting intermediate frequency step-up transformer (23), rectification circuit adopts silicon stack rectifier bridge (6), shell structure comprises outer cylinder body (14) and head harness (13), iron core of this intermediate frequency step-up transformer (4) and line bag (3), silicon stack rectifier bridge (6) and high-field electrode (9) are fixed into an integral body by insulated support, are sealed in the high temperature resistant silicone oil (16) in the outer cylinder body (14).
2. high-voltage DC power supply according to claim 1, iron core (4) the employing length-width ratio that it is characterized in that intermediate frequency step-up transformer (23) is 6 times an Idiotype rectangle iron core, primary and secondary line bag (3) is wound on the same iron core column.
3. high-voltage DC power supply according to claim 1 and 2, it is characterized in that, the line bag (3) of intermediate frequency step-up transformer (23) supports by first insulated support (2) and second insulated support (5) at iron core (4) two ends, silicon stack rectifier bridge (6) is connected by second insulated support (5), the 3rd insulated support (7) and the 4th insulated support (8), and high-field electrode (9) is installed on the 4th insulated support (8).
4. high-voltage DC power supply according to claim 3 is characterized in that first insulated support (2) is a terraced structure, is with thermal expansion chamber (1) above.
5. high-voltage DC power supply according to claim 1 is characterized in that, the chamber wall of outer cylinder body (14) adopts and can improve its intensity through heat treatment and reach high-strength seamless steel pipe container more than the anti-static pressure 50MPa.
6. high-voltage DC power supply according to claim 1 is characterized in that the housing of head harness is provided with three sintering sealing plugs (15), is marked with silicone grease (11) in the cavity.
7. high-voltage DC power supply according to claim 6 is characterized in that, the interior survey electrode of three sintering sealing plugs (15) is connected with earth connection with the elementary lead-in wire of intermediate frequency step-up transformer, and lateral electrode is connected with the external cable heart yearn.
8. according to claim 6 or 7 described high-voltage DC power supplies, it is characterized in that the external cable crust is connected with outer cylinder body (14) by head harness (13).
9. high-voltage DC power supply according to claim 4 is characterized in that, thermal expansion chamber (1) adopts resistant to elevated temperatures fluorubber, size greater than silicone oil 150 ℃ the time because the volume that thermal expansion increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202285636U CN201345617Y (en) | 2008-12-31 | 2008-12-31 | Coaxial downhole type high-voltage DC power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202285636U CN201345617Y (en) | 2008-12-31 | 2008-12-31 | Coaxial downhole type high-voltage DC power supply |
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| Publication Number | Publication Date |
|---|---|
| CN201345617Y true CN201345617Y (en) | 2009-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202285636U Expired - Fee Related CN201345617Y (en) | 2008-12-31 | 2008-12-31 | Coaxial downhole type high-voltage DC power supply |
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| Country | Link |
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| CN (1) | CN201345617Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106663924A (en) * | 2014-07-16 | 2017-05-10 | Abb瑞士股份有限公司 | Valve Unit For Hvdc Power Converter Insulated By Solid Material And Gas |
-
2008
- 2008-12-31 CN CNU2008202285636U patent/CN201345617Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106663924A (en) * | 2014-07-16 | 2017-05-10 | Abb瑞士股份有限公司 | Valve Unit For Hvdc Power Converter Insulated By Solid Material And Gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XI'AN GUANTONG ENERGY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: LV XIAOLIN Effective date: 20110412 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710065 S308, INNOVATION BUILDING, NO. 25, GAOXIN ROAD 1, XI'AN CITY, SHAANXI PROVINCE TO: 710075 NO. 1-8-10801, WANGZUO MODERN CITY, TANGYAN ROAD, HIGH-TECH. ZONE, XI'AN CITY, SHAANXI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110412 Address after: 710075 Shaanxi high tech Zone in Xi'an City, Tang Yan Mong block modern city 1-8-10801 No. Patentee after: Xi'an Guangtong Energy Technology Co., Ltd. Address before: 710065 innovation building, 25 hi tech 1 road, Shaanxi, Xi'an S308 Patentee before: Lv Xiaolin |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091111 Termination date: 20171231 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |