CN110661111A - Deep well type direct current earthing pole's exhaust system - Google Patents
Deep well type direct current earthing pole's exhaust system Download PDFInfo
- Publication number
- CN110661111A CN110661111A CN201910895301.8A CN201910895301A CN110661111A CN 110661111 A CN110661111 A CN 110661111A CN 201910895301 A CN201910895301 A CN 201910895301A CN 110661111 A CN110661111 A CN 110661111A
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- CN
- China
- Prior art keywords
- deep well
- exhaust
- direct current
- type direct
- grounding electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000002245 particle Substances 0.000 claims abstract description 32
- 239000000571 coke Substances 0.000 claims abstract description 25
- 239000004746 geotextile Substances 0.000 claims abstract description 17
- 238000010276 construction Methods 0.000 abstract 1
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
- H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Manufacturing Of Electrical Connectors (AREA)
- Electrostatic Separation (AREA)
Abstract
The invention discloses an exhaust system of a deep well type direct current grounding electrode, wherein a filling system is positioned in a deep well; the filling system comprises: an exhaust pipe, coke particles and geotextiles; the exhaust pipe is fixed on the outer side of a deep well type direct current grounding electrode extending to the underground; the length of the exhaust pipe is greater than the total depth of the deep well; exhaust holes are distributed on the pipe wall of the exhaust pipe; the coke particles are filled between the well wall of the deep well and the deep well type direct current grounding electrode; the geotextile is coated on the outer side of the exhaust hole. The construction method of the exhaust system of the deep well type direct current grounding electrode can effectively fill the deep well flow dispersing section, effectively exhaust gas and prolong the service life of the exhaust system.
Description
Technical Field
The invention relates to the technical field of direct current transmission, in particular to an exhaust system of a deep well type direct current grounding electrode.
Background
The particle size and the proportion of coke particles are key technologies in the engineering filling process of the deep well type direct current grounding electrode. The coke is used as a main filling material for a gap between the underground feed rod and the wall of the deep well and is an important component of the grounding electrode. In actual work, the feed conductor has an ion conduction condition in a flow scattering process, in the ion conduction process, an action system of coke and water is accompanied with the generation of gas, and if the gas cannot be smoothly discharged out of a downhole feed system, the gas is attached to the feed system in the form of bubbles; with the increasing of the gas quantity, the grounding resistance is increased correspondingly, and finally the grounding electrode is failed.
Therefore, an exhaust system of a deep well type direct current grounding electrode is needed, and the service life of the exhaust system is prolonged.
Disclosure of Invention
The embodiment of the invention provides an exhaust system of a deep well type direct current grounding electrode, which can effectively fill a deep well flow dispersing section and prolong the service life of the exhaust system while effectively exhausting.
The embodiment I of the invention provides an exhaust system of a deep well type direct current grounding electrode, wherein a filling system is positioned in a deep well; the filling system comprises: an exhaust pipe, coke particles and geotextiles;
the exhaust pipe is fixed on the outer side of a deep well type direct current grounding electrode extending to the underground; the length of the exhaust pipe is greater than the total depth of the deep well; exhaust holes are distributed on the pipe wall of the exhaust pipe;
the coke particles are filled between the well wall of the deep well and the deep well type direct current grounding electrode;
the geotextile is coated on the outer side of the exhaust hole.
As an improvement of the scheme, the total depth of the well body of the deep well is not less than 1000m, and the well diameter is not less than 340 mm.
As an improvement of the scheme, the exhaust port of the exhaust pipe extends out of the wellhead of the deep well, and the extending distance is not less than 0.5 m;
as an improvement of the scheme, the particle size of the coke particles is 0.125mm-0.180 mm.
As an improvement of the scheme, the specification of the geotextile is 200g/m2。
Compared with the prior art, the exhaust system of the deep well type direct current grounding electrode provided by the embodiment of the invention has the following beneficial effects:
the coke particles are filled between the well wall of the deep well and the deep well type direct current grounding electrode, so that the contact area of the feed rod and the stratum can be increased, the current dispersion efficiency is accelerated, and the corrosion rate of the feed rod is reduced; the particle size range of coke particles is 80-120 meshes (the particle size is 0.125mm-0.180mm), the contact area of the feed rod and the stratum can be effectively ensured, and the diffusion efficiency is ensured; when the geotextile with the thickness of 200g/m2 is adopted, the coke particles with the thickness of 0.1-0.2mm can penetrate through the geotextile and enter the exhaust pipe, the amount of the coke particles is less than 10g/h, the geotextile has good filtering effect, and the exhaust system can be ensured to effectively exhaust; therefore, the exhaust blockage caused by bottom coke particles is prevented while the exhaust is effectively carried out, and the service life of the exhaust system is further prolonged.
Drawings
Fig. 1 is a schematic structural diagram of an exhaust system of a deep-well type dc ground electrode according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, which is a schematic structural diagram of an exhaust system of a deep-well type dc ground electrode according to an embodiment of the present invention, a filling system is located in a deep well; the filling system comprises: an exhaust pipe 1, coke particles 2 and geotextiles 3;
the exhaust pipe 1 is fixed on the outer side of a deep well type direct current grounding electrode 4 extending underground; the length of the exhaust pipe 1 is larger than the total depth of the deep well; exhaust holes are distributed on the pipe wall of the exhaust pipe 1;
the coke particles 2 are filled between the well wall of the deep well and the deep well type direct current grounding electrode 4;
the geotextile 3 is coated on the outer side of the vent hole.
Furthermore, the total depth of the well body of the deep well is not less than 1000m, and the well diameter is not less than 340 mm.
Further, an exhaust port of the exhaust pipe 1 extends out of a well mouth of the deep well, and the extending distance is not less than 0.5 m;
further, the particle size of the coke particles 2 ranges from 0.125mm to 0.180 mm. That is, the particle diameter of the coke particles 2 is 0.180mm or less and 0.125mm or more.
Further, the specification of the geotextile 3 is 200g/m2。
Compared with the prior art, the exhaust system of the deep well type direct current grounding electrode provided by the embodiment of the invention has the following beneficial effects:
the coke particles are filled between the well wall of the deep well and the deep well type direct current grounding electrode, so that the contact area of the feed rod and the stratum can be increased, the current dispersion efficiency is accelerated, and the corrosion rate of the feed rod is reduced; the particle size range of coke particles is 80-120 meshes (the particle size is 0.125mm-0.180mm), the contact area of the feed rod and the stratum can be effectively ensured, and the diffusion efficiency is ensured; when the geotextile with the thickness of 200g/m2 is adopted, the coke particles with the thickness of 0.1-0.2mm can penetrate through the geotextile and enter the exhaust pipe, the amount of the coke particles is less than 10g/h, the geotextile has good filtering effect, and the exhaust system can be ensured to effectively exhaust; therefore, the exhaust blockage caused by bottom coke particles is prevented while the exhaust is effectively carried out, and the service life of the exhaust system is further prolonged.
It should be noted that the above-described device embodiments are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. In addition, in the drawings of the embodiment of the apparatus provided by the present invention, the connection relationship between the modules indicates that there is a communication connection between them, and may be specifically implemented as one or more communication buses or signal lines. One of ordinary skill in the art can understand and implement it without inventive effort.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (5)
1. The exhaust system of the deep well type direct current grounding electrode is characterized in that the filling system is positioned in a deep well; the filling system comprises: an exhaust pipe, coke particles and geotextiles;
the exhaust pipe is fixed on the outer side of a deep well type direct current grounding electrode extending to the underground; the length of the exhaust pipe is greater than the total depth of the deep well; exhaust holes are distributed on the pipe wall of the exhaust pipe;
the coke particles are filled between the well wall of the deep well and the deep well type direct current grounding electrode;
the geotextile is coated on the outer side of the exhaust hole.
2. The exhaust system of a deep well type direct current grounding electrode according to claim 1, wherein the total depth of the well body of said deep well is not less than 1000m, and the well diameter is not less than 340 mm.
3. The deep well type direct current grounding electrode exhaust system according to claim 2, wherein the exhaust port of the exhaust pipe extends out of the mouth of the deep well by a distance of not less than 0.5 m.
4. The deep well type direct current grounding electrode exhaust system according to claim 3, wherein the coke particles have a particle size of 0.125mm to 0.180 mm.
5. The deep well type direct current grounding electrode exhaust system according to claim 4, wherein the geotextile has a specification of 200g/m2。
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895301.8A CN110661111A (en) | 2019-09-20 | 2019-09-20 | Deep well type direct current earthing pole's exhaust system |
| PCT/CN2020/103934 WO2021052001A1 (en) | 2019-09-20 | 2020-07-24 | Exhaust system for deep well-type direct current grounding electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910895301.8A CN110661111A (en) | 2019-09-20 | 2019-09-20 | Deep well type direct current earthing pole's exhaust system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110661111A true CN110661111A (en) | 2020-01-07 |
Family
ID=69037555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910895301.8A Pending CN110661111A (en) | 2019-09-20 | 2019-09-20 | Deep well type direct current earthing pole's exhaust system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110661111A (en) |
| WO (1) | WO2021052001A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021052001A1 (en) * | 2019-09-20 | 2021-03-25 | 南方电网科学研究院有限责任公司 | Exhaust system for deep well-type direct current grounding electrode |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2406346Y (en) * | 1999-12-30 | 2000-11-15 | 武烈 | Dc. transmission combined earth pole for deep well |
| CN2571005Y (en) * | 2002-09-27 | 2003-09-03 | 华东电力试验研究院 | AC grounding device |
| US20130228357A1 (en) * | 2010-10-09 | 2013-09-05 | R U Grounded Energy Inc. | Electrical ground fault protection device |
| CN109546365A (en) * | 2018-10-29 | 2019-03-29 | 中国能源建设集团广东省电力设计研究院有限公司 | The well head of deep-well type earthing pole |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5026508A (en) * | 1990-05-11 | 1991-06-25 | Cathodic Engineering Equipment Co., Inc. | Ground electrode backfill composition, anode bed |
| CN106813803A (en) * | 2017-01-22 | 2017-06-09 | 中国能源建设集团广东省电力设计研究院有限公司 | DC transmission deep well type earthing pole temperature measuring equipment, temperature online monitoring system and its monitoring method |
| CN110600902A (en) * | 2019-08-30 | 2019-12-20 | 南方电网科学研究院有限责任公司 | Exhaust system of deep well type earthing pole |
| CN210897656U (en) * | 2019-08-30 | 2020-06-30 | 南方电网科学研究院有限责任公司 | Vertical exhaust device of deep well type grounding electrode |
| CN110661111A (en) * | 2019-09-20 | 2020-01-07 | 南方电网科学研究院有限责任公司 | Deep well type direct current earthing pole's exhaust system |
-
2019
- 2019-09-20 CN CN201910895301.8A patent/CN110661111A/en active Pending
-
2020
- 2020-07-24 WO PCT/CN2020/103934 patent/WO2021052001A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2406346Y (en) * | 1999-12-30 | 2000-11-15 | 武烈 | Dc. transmission combined earth pole for deep well |
| CN2571005Y (en) * | 2002-09-27 | 2003-09-03 | 华东电力试验研究院 | AC grounding device |
| US20130228357A1 (en) * | 2010-10-09 | 2013-09-05 | R U Grounded Energy Inc. | Electrical ground fault protection device |
| CN109546365A (en) * | 2018-10-29 | 2019-03-29 | 中国能源建设集团广东省电力设计研究院有限公司 | The well head of deep-well type earthing pole |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021052001A1 (en) * | 2019-09-20 | 2021-03-25 | 南方电网科学研究院有限责任公司 | Exhaust system for deep well-type direct current grounding electrode |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021052001A1 (en) | 2021-03-25 |
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| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20200107 |