CN204112357U - Be applicable to the heavy excavation anti-corrosion foundation of saline soil area UHV transmission line - Google Patents
Be applicable to the heavy excavation anti-corrosion foundation of saline soil area UHV transmission line Download PDFInfo
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- CN204112357U CN204112357U CN201320891918.0U CN201320891918U CN204112357U CN 204112357 U CN204112357 U CN 204112357U CN 201320891918 U CN201320891918 U CN 201320891918U CN 204112357 U CN204112357 U CN 204112357U
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- transmission line
- concrete
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- 238000005260 corrosion Methods 0.000 title claims abstract description 51
- 230000005540 biological transmission Effects 0.000 title claims abstract description 37
- 239000002689 soil Substances 0.000 title claims abstract description 34
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 title claims abstract description 27
- 239000011780 sodium chloride Substances 0.000 title claims abstract description 27
- 238000009412 basement excavation Methods 0.000 title claims abstract description 20
- 239000003973 paint Substances 0.000 claims abstract description 54
- 230000007797 corrosion Effects 0.000 claims abstract description 26
- 238000000576 coating method Methods 0.000 claims abstract description 23
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- 230000002401 inhibitory effect Effects 0.000 claims abstract description 14
- 230000037452 priming Effects 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 230000003260 anti-sepsis Effects 0.000 claims description 5
- 238000010276 construction Methods 0.000 abstract description 7
- 230000002421 anti-septic effect Effects 0.000 abstract description 3
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 21
- 239000004568 cement Substances 0.000 description 19
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 16
- 239000010410 layer Substances 0.000 description 12
- 238000005530 etching Methods 0.000 description 8
- 230000005611 electricity Effects 0.000 description 7
- 150000003839 salts Chemical class 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000011398 Portland cement Substances 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000011835 investigation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 241000370738 Chlorion Species 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 229910021653 sulphate ion Inorganic materials 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 125000001309 chloro group Chemical class Cl* 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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Abstract
The utility model provides a kind of heavy excavation anti-corrosion foundation being applicable to saline soil area UHV transmission line, and this basis comprises: the bed course that concrete is made; Be arranged at the basic body that the steel concrete on bed course is made; Be painted at least two-layer priming paint paint film on bed course end face and basic body surface and the corrosion-inhibiting coating of at least three aspect paint paint films formation, wherein, described corrosion-inhibiting coating gross thickness >=200 μm.Basis of the present utility model has good durability and antiseptic property, is applicable to saline soil area UHV transmission line shaft tower construction.
Description
Technical field
The utility model relates to basic technology field used for transmission line, specifically about a kind of electric power line pole tower heavy excavation anti-corrosion foundation being applicable to saline soil area, the durability on this basis comparatively conventional foundation significantly improves, and basis can be made normally to work in design life.
Background technology
The safety and reliability of transmission line tower foundation is vital for the safe operation of transmission line of electricity.And in saline soil area, transmission line tower foundation concrete easily occurs to be corroded, there is crack, peel off gradually and lose the phenomenon of supporting capacity.
Salinized soil is the soil that salt content is larger, is the general name of solonchak and alkaline earth and various salinization, alkali-affected soil, has that burn into is molten to fall into and the characteristic such as salt is swollen.In saline soil area, cause the corrosivity Slope protection of base concrete a lot, according to the feature of salinized soil, mainly owing to exceeding the sulfate of certain content and villaumite in soil to the corrosion failure of steel concrete.The failure mechanism of sulfate mainly contains two classes: the ambient water 1, containing certain sulfate, under the siphonage of concrete capillary tube, be inhaled in concrete bodies, concrete exposes in an atmosphere, evaporate transmission moisture, separate out concentrated for salinity, residue in concrete surface and inside, present white mark, bloom, concrete is made to suffer the expansion force produced during sulphate crystal, cause concrete to destroy from top layer, concrete strength is reduced, finally may cause destroying completely; 2, when containing sulfate in ambient water (underground water and surface water), as sodium sulphate (Na
2sO
4), calcium sulfate (CaSO
4), magnesium sulfate (MgSO
4) etc., the alkaline solid-state free lime matter in the sodium sulphate in water and Portland cement stone and drated calcium aluminate generation chemical reaction, generate gypsum and calcium sulphoaluminate, produces volume expansion, concrete produced and destroys.The failure mechanism main process of villaumite is: villaumite by extraneous medium penetrate into steel concrete inside → rebar surface chlorion cause macro cell corrosion generation → corrosion product expand the tensile stress produced in concrete in tensile stress → concrete cause cracking to peel off.Because saline soil area transmission line foundation is embedded in underground, the soil higher with salt content or water contact throughout the year, and sulfate ion and chlorion slowly can invade basic internal, make concrete generation corrosion failure, until lose bearing capacity, serious threat is to the safe operation of whole circuit.
In current domestic transmission line tower foundation design, special regulation is not made to saline soil area basic engineering.Design of Foundation of Transmission Lines was mainly according to transmission line of electricity industry standard " aerial power transmission line basic engineering technical stipulation " (DL/T 5219-2005) (hereinafter referred to as " technical stipulation ") this design's standard in the past, and the basic engineering of saline soil area is not explicitly pointed out in the body of the email, required by just having in the provision explanation of its appendix C .2 bar, that is: can perform with reference to relevant regulations in petroleum pipeline industry standard " saline soil area norm of construction " (SY/T 0317-97) (hereinafter referred to as " rule built by salt ") for the anticorrosion of basis in the transmission line of electricity of saline soil area, its comprehensive anticorrosive measure is in table 1.
The anticorrosion integrated treatment measure of table 1
There is following technical problem or weak point in above-mentioned anti-corrosion measure:
1) coagulation strength grade increases gradually along with the increase of cement consumption and the reduction of water/binder ratio, and concrete compactness also increases thereupon, and corrosion resistance also strengthens gradually.The integrated treatment measure of table 1 does not have the lower strength grade of concrete that will adopt of clear and definite different corrosion class to be how many, designer when design basis, not easily with reference to value;
2) cement is inherently containing certain salinity, the cement salt content that kind is different is also different, the cement itself exceeding certain salt content just has corrosivity to reinforcing bar, table 1 pair cement type regulation comparatively wide in range (deep-etching does not then have clear and definite cement type), indefinite;
In addition, according to the regulation of " saline soil area norm of construction " 5.5.4 bar, the cement type of middle deep-etching area concrete should adopt middle and high sulfate resisting cement, and according to the regulation of " Sulfate resistance portland cement " (GB748-2005), calcium oxide content lower (basicity is low) in middle sulfate resisting cement and high sulfate resisting cement, this makes to be mixed with concrete density difference, although can resist SO
4 2-erosion, but at Cl
1-can corrosion of steel bar be caused under etching condition, thus be only applicable to the engineering of single sulphate corrosion environment, and not be suitable for the engineering simultaneously existed under sulfate and chlorine salt corrosion environment; Therefore, in the standards such as " concrete for marine works structural anticorrosion erosion technical specification " JTJ275, all not recommending sulfate resisting cement, high sulfate resisting cement in employing, having indicated in GB50046-2008 when removing containing ion SO in medium yet
4 2-time outward also containing other corrosive ions, the decay resistance of Sulfate resistance portland cement, except truly having use experience, still should be determined through overtesting; In addition, sulfate resisting cement early strength is low, is also not suitable for prefabricated units;
3) in table 1, the treatment measures under deep-etching have done scope restriction to minimum cement dosage, more difficult realization in the operation of practice of construction concrete batching;
4) pitch class coating is shorter for effective service life, and fits with concrete and do not have resinae closely knit;
5) the coating scope of protecting outward is indefinite, and coating layer thickness is indefinite;
6) heavy excavation sole plate is stressed comparatively complicated, easily occurs crack, is thus more vulnerable to erosion, must arrange bed course, and the integrated treatment of table 1 is arranged for basic grade, the thickness whether arranging bed course and blinding concrete of heavy excavation, does not all specify.
Based on above-mentioned present situation, the safety in operation and the reliability that improve saline soil area transmission line tower foundation are significant.
Utility model content
Main purpose of the present utility model is the weak point not being suitable for saline soil area according to existing transmission line tower foundation, sum up every profession and trade design code, and in conjunction with the particularity of work transmission line own and heavy excavation basis own characteristic, release a kind of saline soil area anti-corrosion foundation of novelty, the durability on this basis comparatively conventional foundation significantly improves, be applicable to saline soil area, normally work in design life.
For reaching above-mentioned purpose, this case utility model designer gropes research experiment by a large amount of, deep research and theory analysis are done, according to safe and reliable, the design principles of economical rationality, follow new edition " Code for design of concrete structures " (GB50010-2010) and " durability design specification " (GB50476-2008) requirement for concrete durability, and in conjunction with transmission line of electricity own characteristic, investigate strength grade of concrete, water-cement ratio, cement consumption, cement type, anticorrosive paint kind, may affect basic operation performance such as execution conditions, a kind of transmission line tower foundation of the good antiseptic property of tool of novelty is proposed.
Particularly, the utility model provides a kind of heavy excavation anti-corrosion foundation being applicable to saline soil area UHV transmission line, and this basis comprises:
The bed course that concrete is made;
Be arranged at the basic body that the steel concrete on bed course is made;
Be painted at least two-layer priming paint paint film on bed course end face and basic body surface and the corrosion-inhibiting coating of at least three aspect paint paint films formation, wherein, described corrosion-inhibiting coating gross thickness >=200 μm.
According to specific embodiments of the present utility model, of the present utility modelly be applicable in the heavy excavation anti-corrosion foundation of saline soil area UHV transmission line, described corrosion-inhibiting coating comprises at least two-layer priming paint paint film and at least three aspect paint paint films, every layer of film thickness 40-50 μm.This basis is applicable to middle corrosion class area.
According to specific embodiments of the present utility model, of the present utility modelly be applicable in the heavy excavation anti-corrosion foundation of saline soil area UHV transmission line, described corrosion-inhibiting coating comprises at least two-layer priming paint paint film and at least five aspect paint paint films, every layer of film thickness 40-50 μm, corrosion-inhibiting coating gross thickness >=300 μm.This basis is applicable to deep-etching grade area.
According to specific embodiments of the present utility model, be of the present utility modelly applicable in the heavy excavation anti-corrosion foundation of saline soil area UHV transmission line, described cushion thickness is at least 100mm, and based on bed course width, main body base plate extends to few 100mm to outer.
In the utility model, the material preparing bed course and basic body is the prior art in affiliated field.The material also commercially available acquisition of described corrosion-inhibiting coating, preferably, described priming paint is HCPE anti-corrosion primer, and described finish paint is HCPE antisepsis finishing paint.
The heavy excavation anti-corrosion foundation being applicable to saline soil area UHV transmission line of the present utility model in the preparation, can be carried out in accordance with the following methods:
Heavy excavation foundation ditch, prepares concrete cushion; This concrete cushion is after placement, maintenance and drying, and within the scope of surperficial longitude and latitude flatness requirement 2m, drop is less than 2mm;
Concrete cushion is prepared concrete foundation main body, and this concrete foundation main body is after placement, maintenance and drying, and within the scope of surperficial longitude and latitude flatness requirement 2m, drop is less than 2mm;
At concrete cushion end face and at least two-layer HCPE anti-corrosion primer of basic body external coating and at least 3 layers of HCPE antisepsis finishing paint, every layer of film thickness 40 ~ 50 μm; In this step, control substrate temperature and be 0 DEG C ~ 50 DEG C and at least higher than air dew point temperature 3 DEG C, coating self-temperature higher than 15 DEG C, construction environment temperature not higher than 35 DEG C, envionmental humidity less than 75%;
After being painted with last aspect paint, after paint film bone dry, be backfilling and compacted foundation ditch.
More specifically, for weak corrosion class area, the concrete minimum intensity grade of basic body is C30; The concrete minimum intensity grade of bed course is C20; For middle corrosion class area, the concrete minimum intensity grade of basic body is C35; The concrete minimum intensity grade of bed course is C25; For deep-etching grade area, the concrete minimum intensity grade of basic body is C40; The concrete minimum intensity grade of bed course is C25; Further, the cement in blinding concrete and the cement in basic body concrete are same kind.
According to specific embodiments of the present utility model, the transmission line tower foundation technical measures of the good antiseptic property of tool of the present utility model is in table 2.1.
The measure of table 2.1 novel anticorrosion basic technology
The HCPE Chinese that the utility model adopts is HCPE, and being the anticorrosive paint that a kind of efficient durability is strong, is the existing goods in affiliated field, requires that its basic mechanical design feature should be not less than requirement every in table 2.2 in the utility model.
The requirement of table 2.2 basic mechanical design feature
Note: the basic mechanical design feature of unit in charge of construction (personnel) when buying HCPE anticorrosive paint can with reference on table, but simultaneously HCPE need have product quality certificate and meet outgoing quality level, and meets national coherent detection standard and regulation.
For brushing thickness and the brushing number of channels of HCPE anticorrosive paint, in this basic technology measure, have also been made clear stipulaties, in table 2.3.
Table 2.3 film thickness table
The beneficial effects of the utility model:
1) the utility model follows new edition " Code for design of concrete structures " (GB50010-2010) and " durability design specification " (GB50476-2008) requirement for concrete durability completely, and in conjunction with transmission line of electricity own characteristic, provide a kind of anti-corrosion foundation;
2) adopt HCPE anticorrosive paint in the utility model, this type of coating is longer compared with effective service life of pitch class coating, and fits comparatively tight with concrete, effectively can protect base concrete, stop the intrusion of extraneous corrosive medium;
3) add base concrete bed course, make sole plate obtain more effective protection;
4) interior safeguard procedures can significantly improve concrete compactness, outer protection effectively can stop the intrusion of outside etching medium, the aseptic technic of this combination of inner and outside, concrete durability can be strengthened conscientiously, line tower foundation is normally worked within design period, guarantees the security of operation of whole piece transmission line of electricity.
Basis of the present utility model can be applicable to UHV transmission line, and (UHV transmission line refers to that electric pressure is at the transmission line of electricity exchanging 1000kV or direct current ± more than 800kV, comparatively common engineering is high for the important coefficient of this type of line design, requires more strict).
The technical solution of the utility model is implemented safe, economical; All kinds of technical data is clear and definite; Inside and outside protection combines; Laminating work transmission line feature.
Accompanying drawing explanation
Fig. 1 is the structural representation of heavy excavation anti-corrosion foundation of the present utility model.
Detailed description of the invention
Describe the enforcement of technical solutions of the utility model and the beneficial effect that has in detail below by way of specific embodiments, but can not regard as to of the present utility model can any restriction of practical range.
Embodiment 1
Shown in Figure 1, the heavy excavation anti-corrosion foundation (1670# basis) in the present embodiment comprising: the bed course 12 that concrete is made; Be arranged at the basic body 10 that the steel concrete on bed course is made; Be painted on the corrosion-inhibiting coating 11 comprising priming paint paint film 111 and finish paint paint film 112 on bed course end face and basic body surface.Each concrete and priming paint, topcoat material are commercially available.
Bed course 12 is C35 grade concrete, and basic body 10 is C40 grade concrete; The thickness 100mm of concrete cushion, based on bed course width, main body base plate is to outer 100mm.
Concrete cushion and concrete foundation main body are made and through placing, after maintenance and drying, concrete cushion end face and basic body external coating 2 layers of HCPE anti-corrosion primer 111 and 5 layers of HCPE antisepsis finishing paint 112 (only illustrating 3 aspect paints in Fig. 1), every layer of film thickness 40 ~ 50 μm; The dry film total thickness of described priming paint and finish paint about 300 μm.In brushing anti-corrosion primer and antisepsis finishing paint coating process, ground (bed course and basic body) temperature is 0 DEG C ~ 50 DEG C and at least higher than air dew point temperature 3 DEG C, coating self-temperature higher than 15 DEG C, construction environment temperature not higher than 35 DEG C, envionmental humidity less than 75%.After being painted with last aspect paint, after paint film bone dry, be backfilling and compacted foundation ditch.
Technical solutions of the utility model are successful Application in the Ha Minan-Zhengzhou ± 800kV extra high voltage direct current transmission line engineering of operation of being completed, and for the 1670# of this project the 8th bid section basis, specific embodiment is briefly described below:
1670# basis is positioned at the saline soil area of Hexi Corridor In Gansu, according to the criterion of " Code for investigation of geotechnical engineering (version in 2009) " (GB50021-2001), the foundation soil on this basis has deep-etching to base concrete, need to carry out preservative treatment to this basis, improve the durability on basis, reach the service life of design.
The 2 groups of concrete sample stakes buried underground in same place for 2002, do not take safeguard procedures for one group, and other one group is the above-mentioned heavy excavation benchmark that have employed the anti-corrosion measure of the utility model design concept of the present embodiment.The investigation result display of 2013: do not take the concrete sample of safeguard procedures to be corroded, adopt the concrete sample of the utility model design concept then to stand intact.
From above investigation and scientific achievement, do not take the intensity of the concrete of anti-corrosion measure in strong corrosive medium after 10-20 to reduce 20%-90%, the requirement that design uses the year time limit can not be met completely.
Claims (4)
1. be applicable to a heavy excavation anti-corrosion foundation for saline soil area UHV transmission line, it is characterized in that, this basis comprises:
The bed course that concrete is made;
Be arranged at the basic body that the steel concrete on bed course is made;
Be painted on the corrosion-inhibiting coating on bed course end face and basic body surface, corrosion-inhibiting coating is made up of priming paint paint film and finish paint paint film, and priming paint paint film is at least two-layer, finish paint paint film at least three layers, wherein, and described corrosion-inhibiting coating gross thickness >=200 μm;
Wherein, described cushion thickness is at least 100mm, and based on bed course width, main body base plate extends to few 100mm to outer.
2. the heavy excavation anti-corrosion foundation being applicable to saline soil area UHV transmission line according to claim 1, is characterized in that, every layer of film thickness 40-50 μm.
3. the heavy excavation anti-corrosion foundation being applicable to saline soil area UHV transmission line according to claim 1, it is characterized in that, described corrosion-inhibiting coating comprises at least two-layer priming paint paint film and at least five aspect paint paint films, every layer of film thickness 40-50 μm, corrosion-inhibiting coating gross thickness >=300 μm.
4. the heavy excavation anti-corrosion foundation being applicable to saline soil area UHV transmission line according to claim 1, is characterized in that, described priming paint is HCPE anti-corrosion primer, and described finish paint is HCPE antisepsis finishing paint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891918.0U CN204112357U (en) | 2013-12-31 | 2013-12-31 | Be applicable to the heavy excavation anti-corrosion foundation of saline soil area UHV transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320891918.0U CN204112357U (en) | 2013-12-31 | 2013-12-31 | Be applicable to the heavy excavation anti-corrosion foundation of saline soil area UHV transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204112357U true CN204112357U (en) | 2015-01-21 |
Family
ID=52329685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320891918.0U Expired - Lifetime CN204112357U (en) | 2013-12-31 | 2013-12-31 | Be applicable to the heavy excavation anti-corrosion foundation of saline soil area UHV transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204112357U (en) |
-
2013
- 2013-12-31 CN CN201320891918.0U patent/CN204112357U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
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Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: CHINA POWER ENGINEERING CONSULTING (Group) Corp. Patentee after: ELECTRIC POWER PLANNING & ENGINEERING INSTITUTE Patentee after: NORTHWEST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Patentee after: NORTHEAST ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Patentee after: EAST CHINA ELECTRIC POWER DESIGN INSTITUTE CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Patentee after: CENTRAL SOUTHERN CHINA ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee after: Southwest Electric Power Design Institute CO., Ltd. of China Power Engineering Consulting Group Patentee after: NORTH CHINA POWER ENGINEERING CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee before: ELECTRIC POWER PLANNING & ENGINEERING INSTITUTE Patentee before: NORTHWEST ELECTRIC POWER DESIGN INST. OF CHINA POWER ENGINEERING CONSULTING Group Patentee before: NORTHEAST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Patentee before: CHINA POWER ENGINEERING CONSULTING Group CORPORATION EAST CHINA ELECTRIC POWER DESIGN INSTITUTE Patentee before: CENTRAL SOUTHERN CHINA ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee before: SOUTHWEST ELECTRIC POWER DESIGN INSTITUTE OF CHINA POWER ENGINEERING CONSULTING Group Corp. Patentee before: NORTH CHINA POWER ENGINEERING CO., LTD. OF CHINA POWER ENGINEERING CONSULTING Group |
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| CX01 | Expiry of patent term |
Granted publication date: 20150121 |
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| CX01 | Expiry of patent term |