CN104505605B - Reduce pipeline yard grounding resistance and extend the device and method of ground connection body life time - Google Patents
Reduce pipeline yard grounding resistance and extend the device and method of ground connection body life time Download PDFInfo
- Publication number
- CN104505605B CN104505605B CN201410692861.0A CN201410692861A CN104505605B CN 104505605 B CN104505605 B CN 104505605B CN 201410692861 A CN201410692861 A CN 201410692861A CN 104505605 B CN104505605 B CN 104505605B
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- Prior art keywords
- friction reducer
- metallic channel
- channel box
- lightning protection
- horizontal grounding
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- 238000000034 method Methods 0.000 title description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 44
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 43
- 238000010276 construction Methods 0.000 claims abstract description 13
- 229910000831 Steel Inorganic materials 0.000 claims description 25
- 239000010959 steel Substances 0.000 claims description 25
- 239000002689 soil Substances 0.000 claims description 20
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 18
- 229910052725 zinc Inorganic materials 0.000 claims description 18
- 239000011701 zinc Substances 0.000 claims description 18
- 238000003466 welding Methods 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- 239000004020 conductor Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 5
- 238000005246 galvanizing Methods 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 230000006378 damage Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000004891 communication Methods 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 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
Abstract
The invention discloses a kind of device for reducing pipeline yard grounding resistance and extending ground connection body life time, belong to oil-gas pipeline yard grounding technology field.Described device includes metallic channel box, friction reducer and horizontal grounding objects；Metallic channel box is the square structure being made up of metal side plate, metal top plate and metal base plate；Horizontal grounding objects are arranged in metallic channel box；Friction reducer is filled in around horizontal grounding objects, and friction reducer and horizontal grounding objects are enclosed in metallic channel box jointly；Hole is provided with metal top plate and metal side plate；Horizontal grounding objects are connected by hole with external ground lead.Present invention also offers the construction method of said apparatus.The present invention is by the way that horizontal grounding objects and friction reducer are enclosed in metallic channel box, improve security, the reliability and stability of oil-gas pipeline yard earthed system, the service life of the earthed system of oil-gas pipeline yard is extended, reduces the operating cost of oil-gas pipeline yard and destruction and pollution to environment.
Description
Technical field
The present invention relates to oil-gas pipeline yard grounding technology field, more particularly to it is a kind of reduce pipeline yard grounding resistance and
Extend the device and method of ground connection body life time.
Background technology
For the earthed system of oil-gas pipeline yard, conventional engineering is more using Hot-dip zinc-coated flat steel sheet as horizontal grounding objects, heat
Zinc-coated angle steel is as Grounding Grids.In high soil resistivity, sand-gravel geology or dry area, this earthed system is set
Meter scheme usually requires to increase the length of horizontal grounding objects, and the quantity of increase Grounding Grids.In landform and yard face area
, it is necessary to meet grounding resistance requirement by increasing the method for friction reducer in the case that domain is limited.
In high soil resistivity, sand-gravel geology or dry area, if oil-gas pipeline yard is connect using increase level
The length of ground body, and the method for the quantity of increase Grounding Grids, it is necessary to oil-gas pipeline station during meeting grounding resistance requirement
There is the requirement that enough regions meet earthed system floor space field.Earthed system area increases, the soil electricity of different earth points
There is difference in resistance rate, electric, the Instrumentation And Communication equipment for causing different zones to be grounded have potential difference.When earthed system is released thunder
When electric current or oil-gas pipeline yard power failure electric current, the electric, failure of Instrumentation And Communication equipment and damage will certainly be caused.
When the earthed system area of oil-gas pipeline yard is restricted, if using the length of increase horizontal grounding objects,
And the method for the quantity of increase Grounding Grids cannot meet the requirement of grounding resistance, it is necessary to by increasing around grounding body
Add the method for friction reducer to meet grounding resistance requirement.In increase friction reducer reduction at initial stage grounding resistance positive effect, but with
The extension of usage time, because friction reducer solidifies and desertifies, and friction reducer is washed away by rainwater, is lost in caused by precipitation, therefore
The effect of reduction grounding resistance can be made gradually to fail, cause grounding resistance to increase therewith, grounding resistance can not meet oil-gas pipeline
The grounding requirement of yard, so when earthed system releases lightning current or oil-gas pipeline yard power failure electric current, it will cause to connect
The time lengthening of ground system release lightning current or power failure electric current, the rise of earthed system voltage, causes electric, Instrumentation And Communication
The failure of equipment and damage, influence the safe operation of oil-gas pipeline yard.In addition, with the loss of friction reducer, metallic ground body
In soil, the corrosion of metallic ground body is greatly accelerated, causes the destruction and fracture of metallic ground body, this can be to oil gas
The safe operation of pipeline yard brings huge hidden danger, and the operating cost of increase oil-gas pipeline station yard modification；Meanwhile loss
Friction reducer can produce pollution to area surroundings and underground water and destroy.
The content of the invention
In order to solve the oil-gas pipeline yard ground connection that existing high soil resistivity, sand-gravel geology or dry area use
Security, reliability and stability are poor existing for system, and friction reducer easily solidifies, is lost in, and metallic ground body is perishable etc. asks
Topic, it is described the invention provides a kind of construction method for the device for reducing pipeline yard grounding resistance and extending ground connection body life time
Device includes metallic channel box, friction reducer and horizontal grounding objects；The metallic channel box is by metal side plate, metal top plate and metal bottom
The square structure that plate is formed；The horizontal grounding objects are arranged in the metallic channel box；The friction reducer is filled in the level
Around grounding body, and the friction reducer and horizontal grounding objects are enclosed in the metallic channel box jointly；The metal top plate
With hole is provided with metal side plate；The horizontal grounding objects are connected by the hole with external ground lead；The friction reducer
The moisture of soil is absorbed by the hole；Electric conductor in the friction reducer by the hole to permeating in surrounding soil, big
Occur dendritic ennation in ground, produce dendritic effects；Hole position in the metal side plate is in the top of the metal side plate；
Building steel column is connected with one end of the first lightning protection downlead using welding manner, first lightning protection downlead
The other end is connected with disconnecting clamp case；The disconnecting clamp case is fixedly mounted on the building steel column；First lightning protection
Downlead is enclosed in the first PVC sleeve pipes；One end of second lightning protection downlead is connected with the disconnecting clamp case, the other end and underground
The horizontal grounding objects in the metallic channel box are connected using welding manner；Second lightning protection downlead is from underground on the ground
Section is enclosed in the 2nd PVC sleeve pipes；One end of electric instrument equipment ground lead-out wire is connected with electric instrument equipment, and the other end connects with the level
Ground body is connected using welding manner.
First lightning protection downlead and the second lightning protection downlead are Hot-dip zinc-coated flat steel sheet.
The electric instrument equipment ground lead-out wire is Hot-dip zinc-coated flat steel sheet.
Horizontal range between first lightning protection downlead, the second lightning protection downlead and electric instrument equipment ground lead-out wire is equal
More than 15m.
The horizontal grounding objects are Hot-dip zinc-coated flat steel sheet.
The square structure is rectangle structure.
The rectangle structure is square.
The friction reducer is the physics friction reducer being made up of bentonite, curing agent, lubricant and additional gelling thing.
The device and method provided by the invention for reducing pipeline yard grounding resistance and extending ground connection body life time, by by water
Flat grounding body and friction reducer are enclosed in metallic channel box, so as to ensure the safe operation of oil-gas pipeline yard earthed system, are had
Security, the reliability and stability of oil-gas pipeline yard earthed system are improved to effect, while also extend oil-gas pipeline station
The service life of the earthed system of field, reduces the operating cost of oil-gas pipeline yard and destruction and pollution to environment, especially
It is right suitable for all earthed systems positioned at high soil resistivity, sand-gravel geology or dry regional oil-gas pipeline yard
In long oil/gas pipe line engineering, oil-gas field surface engineering, the earthed system of oil depot engineering suffer from wide application space and compared with
Good economic benefit.
Brief description of the drawings
Fig. 1 is the floor map of device provided in an embodiment of the present invention；
Fig. 2 is the schematic perspective view of metallic channel box provided in an embodiment of the present invention；
Fig. 3 is the structural representation of metal top plate provided in an embodiment of the present invention；
Fig. 4 is the structural representation of metal side plate provided in an embodiment of the present invention；
Fig. 5 is the structural representation of metal base plate provided in an embodiment of the present invention；
Fig. 6 is the typical case example schematic of device provided in an embodiment of the present invention；
Fig. 7 is the construction method principle schematic of device provided in an embodiment of the present invention；
Fig. 8 is that the horizontal range of lightning protection downlead of the embodiment of the present invention and electric instrument equipment ground lead-out wire requires schematic diagram.
Embodiment
With reference to the accompanying drawings and examples, technical solution of the present invention is further described.
Referring to Fig. 1 to Fig. 5, reduce pipeline yard grounding resistance the embodiments of the invention provide one kind and extend the grounding body longevity
The device of life, including metallic channel box 1, friction reducer 2 and horizontal grounding objects 3.Wherein, metallic channel box 1 is by metal side plate 11, metal
The square structure that top plate 12 and metal base plate 13 are formed；Horizontal grounding objects 3 are arranged in the metallic channel box 1；Friction reducer 2 fills
Around horizontal grounding objects 3, and friction reducer 2 and horizontal grounding objects 3 are enclosed in metallic channel box 1 jointly；Metal top plate 12
Hole is provided with metal side plate 11；Horizontal grounding objects 3 are connected by hole with external ground lead.
In specific production practices, the material of metal side plate 11, metal top plate 12 and metal base plate 13 uses galvanizing
Steel plate, metal side plate 11, metal top plate 12 and metal base plate 13 are mutually permanently connected by welding realization, so as to ensure metallic channel
Box 1 has reliable fastness, while also to carry out antirust and preservative treatment to metallic channel box, to extend making for metallic channel box
Use the life-span.The thickness of hot-dip galvanizing sheet steel used in metallic channel box 1 and size should calculate according to grounding resistance to be determined；According to design
The technical requirements of scheme, the square structure of metallic channel box 1 can be set as rectangle or square structure.Horizontal grounding objects 3 can
Using Hot-dip zinc-coated flat steel sheet, Hot-dip zinc-coated flat steel sheet (mainly includes lightning protection downlead and electric instrument equipment ground is drawn with external ground lead
Line) welding.
As shown in Figure 3 and Figure 4, the hole 111 on the hole 121 and metal side plate 11 in metal top plate 12 is distributed in uniform,
And hole 111 is located at the top of metal side plate 11.Under normal circumstances, the providing holes in two relative metal side plates 11 is only selected
111；The size in hole 121 and hole 111 should determine according to the usage amount of friction reducer 2.It should be noted that the present embodiment is not specific
The arrangement mode in hole is limited, as long as the weldering of lightning protection downlead and electric instrument equipment ground lead-out wire and horizontal grounding objects can be facilitated
Connect, the hole of various distribution forms can realize the embodiment of the present invention.
Fig. 6 and Fig. 7 shows that the device of the embodiment of the present invention increases defeated work in the second west to east gas pipeline project wheel south-Turfan service main
Construction method in journey：Metallic channel box 1 is imbedded in ground below 21 by backfill 23, the size of metallic channel box 1 for 400 ×
400mm, the thickness of the hot-dip galvanizing sheet steel used in metallic channel box 1 is 2mm, and the thickness of zinc coat is more than 70 μm；Horizontal grounding objects 3 are adopted
With -50 × 5mm Hot-dip zinc-coated flat steel sheet, the thickness of zinc coat is more than 70 μm, and Hot-dip zinc-coated flat steel sheet should be imbedded in below frozen soil layer, buried
Depth is -1.3m；The hole on hole and metal top plate in metal side plate is Φ 10mm hole, and all holes are evenly distributed, metal
The most lower edge in the hole on side plate is not more than 50mm apart from side plate upper edge；Friction reducer 2 be by bentonite, curing agent, lubricant and
The physics friction reducer of additional gelling thing composition, it is ensured that electric conductor in physics friction reducer by the hole on metallic channel box suitably to
Permeated in surrounding soil, while prevent physics friction reducer to be lost in again.One end of building steel column 9 and lightning protection downlead 8, which uses, puts
Thermal weld mode is connected, and the other end of lightning protection downlead 8 is connected with disconnecting clamp case 6；Disconnecting clamp case 6 is fixedly mounted on building
On thing steel column 9；Lightning protection downlead 8 is enclosed in PVC sleeve pipes 7；One end of lightning protection downlead 4 is connected with disconnecting clamp case 6, the other end
It is connected with the horizontal grounding objects 3 (Hot-dip zinc-coated flat steel sheet) in underground metalliferous groove box 1 using exothermic weld mode, and does anti-corrosion and antirust
Processing；Lightning protection downlead 4 is enclosed in PVC sleeve pipes 5 from underground to ground epimere；One end of electric instrument equipment ground lead-out wire 22 and electric instrument
Equipment 10 is connected, and the other end is connected with the horizontal grounding objects 3 (Hot-dip zinc-coated flat steel sheet) in underground metalliferous groove box 1 using exothermic weld mode
Connect, and do anti-corrosion and antirust treatment.In the present embodiment, lightning protection downlead 4, lightning protection downlead 8 and electric instrument equipment ground are drawn
Line 22 uses -50 × 5mm Hot-dip zinc-coated flat steel sheet, and the thickness of zinc coat is more than 70 μm；PVC sleeve pipes 7 and PVC sleeve pipes 5 use
Φ 70 sleeve pipe.In order to prevent the interference between different earthed systems, lightning protection downlead 4, lightning protection downlead 8 and electric instrument should be set
Horizontal range between equipment ground lead-out wire 22 is all higher than 15m, as shown in Figure 8.
By the application of examples detailed above, significantly reduce in high soil resistivity, sand-gravel geology or dry regional
The grounding resistance of oil-gas pipeline yard, and the service life of horizontal grounding objects is extended, greatly save oil-gas pipeline station
The expense of field grounding reconstruction, while a large amount of losses of friction reducer are prevented, reduce to dirty caused by area surroundings and underground water
Dye and destruction.The present embodiment can make the construction of oil-gas pipeline yard earthed system from now on more they tend to standardization, modularization, improve
Security, reliability, the stability of oil-gas pipeline yard earthed system, reduce working procedure and material, facilitate operation maintenance,
Investment and the operating expenses of equipment are reduced, is particularly suitable for use in all positioned at high soil resistivity, sand-gravel geology or dry
The earthed system of the oil-gas pipeline yard in area, connect for long oil/gas pipe line engineering, oil-gas field surface engineering, oil depot engineering
Ground system suffers from wide application space and preferable economic benefit.
After the embodiment of the present invention is applied to the earthed system of oil-gas pipeline yard, following advantage can be achieved：
1) after earthed system uses metallic channel box, friction reducer is wraps closely about the week of horizontal grounding objects by metallic channel box
Enclose, and be closely connected with soil horizon, form a larger-diameter electric conductor, significantly reduce grounding resistance, reduce
The length of horizontal grounding objects, reduce due to horizontal grounding objects it is long caused by electrically, the ground connection electricity of Instrumentation And Communication equipment
Potential difference, improve the safety and reliability of yard earthed system.
2) friction reducer is arranged in metallic channel box, has effectively played the water retaining function of friction reducer, by metal top plate and
Hole in metal side plate absorbs the moisture of soil, it is therefore prevented that friction reducer is washed out or is lost in by rainwater, reduces friction reducer to area
Pollution caused by environment and underground water and destruction.Meanwhile the electric conductor in friction reducer passes through in metal top plate and metal side plate
Suitably to permeating in surrounding soil, there is dendritic ennation in the earth in hole, produces dendritic effects, its internal layer with it is horizontal
Grounding body is closely coupled, and its outer layer and soil are closely coupled, so as to greatly reduce connecing for horizontal grounding objects and soil
Get an electric shock and hinder.
3) friction reducer is arranged in metallic channel box, while preventing friction reducer to be lost in, has played to maximum efficiency drop resistance
The anti-corrosion function of agent so that horizontal grounding objects (Hot-dip zinc-coated flat steel sheet) are with the isolation of corrosive soil, extending horizontal grounding
The service life of body, reduce the cost of oil-gas pipeline yard operation.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail
Describe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., it should be included in the guarantor of the present invention
Within the scope of shield.
Claims (8)
- A kind of 1. construction method for the device for reducing pipeline yard grounding resistance and extending ground connection body life time, it is characterised in that institute Stating device includes metallic channel box, friction reducer and horizontal grounding objects；The metallic channel box is by metal side plate, metal top plate and metal The square structure that bottom plate is formed；The horizontal grounding objects are arranged in the metallic channel box；The friction reducer is filled in the water Around flat grounding body, and the friction reducer and horizontal grounding objects are enclosed in the metallic channel box jointly；The metal roof Hole is provided with plate and metal side plate；The horizontal grounding objects are connected by the hole with external ground lead；The drop resistance Agent absorbs the moisture of soil by the hole；Electric conductor in the friction reducer by the hole to permeating in surrounding soil, Occur dendritic ennation in the earth, produce dendritic effects；Hole position in the metal side plate is in the upper of the metal side plate Portion；Building steel column is connected with one end of the first lightning protection downlead using welding manner, first lightning protection downlead it is another End is connected with disconnecting clamp case；The disconnecting clamp case is fixedly mounted on the building steel column；Under first lightning protection is drawn Line is enclosed in the first PVC sleeve pipes；One end of second lightning protection downlead is connected with the disconnecting clamp case, described in the other end and underground The horizontal grounding objects in metallic channel box are connected using welding manner；Second lightning protection downlead is from underground to ground epimere set In the 2nd PVC sleeve pipes；One end of electric instrument equipment ground lead-out wire is connected with electric instrument equipment, the other end and the horizontal grounding objects Connected using welding manner.
- 2. construction method as claimed in claim 1, it is characterised in that first lightning protection downlead and the second lightning protection downlead It is Hot-dip zinc-coated flat steel sheet.
- 3. construction method as claimed in claim 1, it is characterised in that the electric instrument equipment ground lead-out wire is that galvanizing is flat Steel.
- 4. construction method as claimed in claim 1, it is characterised in that first lightning protection downlead, the second lightning protection downlead Horizontal range between electric instrument equipment ground lead-out wire is all higher than 15m.
- 5. construction method as claimed in claim 1, it is characterised in that the horizontal grounding objects are Hot-dip zinc-coated flat steel sheet.
- 6. construction method as claimed in claim 1, it is characterised in that the square structure is rectangle structure.
- 7. construction method as claimed in claim 6, it is characterised in that the rectangle structure is square.
- 8. construction method as claimed in claim 1, it is characterised in that the friction reducer is by bentonite, curing agent, lubricant With the physics friction reducer of additional gelling thing composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692861.0A CN104505605B (en) | 2014-11-26 | 2014-11-26 | Reduce pipeline yard grounding resistance and extend the device and method of ground connection body life time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410692861.0A CN104505605B (en) | 2014-11-26 | 2014-11-26 | Reduce pipeline yard grounding resistance and extend the device and method of ground connection body life time |
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| Publication Number | Publication Date |
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| CN104505605A CN104505605A (en) | 2015-04-08 |
| CN104505605B true CN104505605B (en) | 2018-03-20 |
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| CN201410692861.0A Active CN104505605B (en) | 2014-11-26 | 2014-11-26 | Reduce pipeline yard grounding resistance and extend the device and method of ground connection body life time |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104426A (en) * | 2017-06-02 | 2017-08-29 | 中国水利水电第五工程局有限公司 | WR and hydropower construction earthing protecting method |
| CN112485473B (en) * | 2020-11-03 | 2023-12-01 | 浙江省建工集团有限责任公司 | Modular lightning-proof grounding test point device |
| CN112395750B (en) * | 2020-11-06 | 2022-09-09 | 长沙理工大学 | Method for reducing power frequency step voltage of urban power transmission steel pipe tower grounding device |
| CN113285250A (en) * | 2021-05-17 | 2021-08-20 | 东莞市长益光电有限公司 | Conductive grounding device and using method |
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| CN1805218A (en) * | 2005-01-13 | 2006-07-19 | 李新利 | Quick-mounted earthing pole containing resistance-reducing agent |
| CN201590494U (en) * | 2009-07-24 | 2010-09-22 | 成都市精电化工厂 | Novel direct buried bore grounding electrode |
| CN202076426U (en) * | 2011-06-28 | 2011-12-14 | 内蒙古电力勘测设计院 | Grounding device of tower |
| CN102610935A (en) * | 2012-03-31 | 2012-07-25 | 云南省昆明农业气象试验站 | Soil non-excavation grounding resistance reduction method |
| CN204271278U (en) * | 2014-11-26 | 2015-04-15 | 中国石油天然气集团公司 | Reduce the device in pipeline station field earth resistance and prolongation earth electrode life-span |
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2014
- 2014-11-26 CN CN201410692861.0A patent/CN104505605B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1805218A (en) * | 2005-01-13 | 2006-07-19 | 李新利 | Quick-mounted earthing pole containing resistance-reducing agent |
| CN201590494U (en) * | 2009-07-24 | 2010-09-22 | 成都市精电化工厂 | Novel direct buried bore grounding electrode |
| CN202076426U (en) * | 2011-06-28 | 2011-12-14 | 内蒙古电力勘测设计院 | Grounding device of tower |
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| CN104505605A (en) | 2015-04-08 |
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Effective date of registration: 20151026 Address after: Langfang City, Hebei Province, 065000 Heping Road, Guangyang District No. 146 Applicant after: CHINA PETROLEUM PIPELINE ENGINEERING Corp. Address before: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Applicant before: China National Petroleum Corp. Applicant before: CHINA PETROLEUM PIPELINE BUREAU Applicant before: CHINA PETROLEUM PIPELINE ENGINEERING Corp. |
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Effective date of registration: 20160206 Address after: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Applicant after: China National Petroleum Corp. Applicant after: CHINA PETROLEUM PIPELINE BUREAU Applicant after: CHINA PETROLEUM PIPELINE ENGINEERING Corp. Address before: Langfang City, Hebei Province, 065000 Heping Road, Guangyang District No. 146 Applicant before: CHINA PETROLEUM PIPELINE ENGINEERING Corp. |
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Effective date of registration: 20171211 Address after: 100007 Dongcheng District, Dongzhimen, China, North Street, No. 9 Oil Mansion, No. Applicant after: China National Petroleum Corp. Applicant after: China Petroleum Pipeline Engineering Co.,Ltd. Applicant after: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. Address before: 100007 Beijing, Dongzhimen, North Street, No. 9, No. Applicant before: China National Petroleum Corp. Applicant before: CHINA PETROLEUM PIPELINE BUREAU Applicant before: CHINA PETROLEUM PIPELINE ENGINEERING Corp. |
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Address after: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: China Petroleum Pipeline Engineering Co.,Ltd. Patentee after: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. Address before: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee before: China National Petroleum Corp. Patentee before: China Petroleum Pipeline Engineering Co.,Ltd. Patentee before: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. |
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Effective date of registration: 20211119 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: China Petroleum Pipeline Engineering Co.,Ltd. Patentee after: CHINA PETROLEUM PIPELINE ENGINEERING Corp. Address before: 100007 Oil Mansion, 9 North Avenue, Dongcheng District, Beijing, Dongzhimen Patentee before: CHINA NATIONAL PETROLEUM Corp. Patentee before: China Petroleum Pipeline Engineering Co.,Ltd. Patentee before: DESIGN BRANCH OF CHINA PETROLEUM PIPELINE ENGINEERING Corp. |