CN201747106U - Tower used for power network transmission line - Google Patents
Tower used for power network transmission line Download PDFInfo
- Publication number
- CN201747106U CN201747106U CN2010201261256U CN201020126125U CN201747106U CN 201747106 U CN201747106 U CN 201747106U CN 2010201261256 U CN2010201261256 U CN 2010201261256U CN 201020126125 U CN201020126125 U CN 201020126125U CN 201747106 U CN201747106 U CN 201747106U
- Authority
- CN
- China
- Prior art keywords
- transmission line
- shaft tower
- power transmission
- arm
- tower
- 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.)
- Expired - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 38
- 239000000725 suspension Substances 0.000 claims abstract description 26
- 239000003365 glass fiber Substances 0.000 claims abstract description 10
- 229920005989 resin Polymers 0.000 claims abstract description 9
- 239000011347 resin Substances 0.000 claims abstract description 9
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000007769 metal material Substances 0.000 claims abstract description 6
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 16
- 239000010931 gold Substances 0.000 claims description 16
- 229910052737 gold Inorganic materials 0.000 claims description 16
- 229920001971 elastomer Polymers 0.000 claims description 10
- KHDSWONFYIAAPE-UHFFFAOYSA-N silicon sulfide Chemical compound S=[Si]=S KHDSWONFYIAAPE-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 238000001746 injection moulding Methods 0.000 claims description 2
- 229920005749 polyurethane resin Polymers 0.000 claims description 2
- 229920001567 vinyl ester resin Polymers 0.000 claims description 2
- 238000004073 vulcanization Methods 0.000 claims description 2
- 239000012212 insulator Substances 0.000 abstract description 8
- 239000002131 composite material Substances 0.000 abstract description 3
- 239000004945 silicone rubber Substances 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 10
- 239000003822 epoxy resin Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 229920000647 polyepoxide Polymers 0.000 description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000004567 concrete Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229920000297 Rayon Polymers 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 2
- 229910021502 aluminium hydroxide Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 230000017105 transposition Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000883966 Astrophytum capricorne Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 244000273618 Sphenoclea zeylanica Species 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
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- 150000001875 compounds Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 210000003141 lower extremity Anatomy 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- -1 polysiloxane Polymers 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Insulators (AREA)
Abstract
The utility model relates to a tower used for a power network transmission line, which comprises a main rod and at least one crossarm, wherein the crossarm is arranged on the main rod; and the main rod is made of metal material. The crossarm comprises a hollow insulating rod and an umbrella skirt arranged on the outer side of the insulating rod. The umbrella skirt is made of vulcanizing silicone rubber. One end of the insulating rod is connected with the main rod, and the other end of the insulating rod is connected with a suspension hardware fitting. The suspension hardware fitting extends in the axial direction of the crossarm and is used for setting the transmission line. The insulating rod is made of glass fiber yarns which are immersed in resin material. The tower used for the power network transmission line adopts the crossarm made of composite material as a support piece of the transmission line, and an insulating umbrella body is arranged on the outer side of the crossarm, so that the tower used for the power network transmission line can suspend the transmission line on the crossarm directly, the application of an insulator string is eliminated, the total height of the tower can be reduced, and the cost of the tower is lowered and the weight of the tower is further lightened.
Description
Technical field
The present invention relates to the electric force pole tower that uses in a kind of transmission line of electricity, particularly a kind of grid power transmission line shaft tower.
Background technology
Tower structure is the important extraordinary braced structures thing of a class in the infrastructure such as transmission of electricity, communication, railway, municipal administration, and the structure of its shaft tower, material etc. can directly influence safety, economy and the reliability of circuit.Using comparatively widely both at home and abroad in the overhead transmission line, shaft tower mainly contains several classes such as wooden stick, concrete frame or prestressed concrete bar, concrete filled steel tube bar, steel pipe pole and iron tower.Wherein iron tower is a pole tower forms commonly used in the extra high voltage network of countries in the world.Generally, use concrete frame in 35KV～110KV circuit, also there is the use concrete frame Plain and knob preferably at the transportation of newly-built 330KV and following circuit and execution conditions at present.Steel pipe pole and concrete filled steel tube bar are in recent years urban distribution network construction and use morely in transforming, and in 220KV and above circuit, adopt the lattice iron tower more.
Above-mentioned electric force pole tower all comprises mobile jib and is arranged on cross-arm on the mobile jib, because no matter be wooden stick or concrete frame or steel pipe pole, iron tower etc., its cross-arm all is in order to bear the weight of power line, all to adopt metal material to make.Therefore, further in order to prevent the cross-arm conducting that power line and metal material are made some beyond thought transmission of electricity accidents take place, iron tower particularly, after power line and cross-arm conducting took place, the earth that electric energy directly can be led caused power wastage.Therefore, can add insulator string at the free end of cross-arm usually.Because power line can or be crossed over building through residential block, non-resident district, therefore, electric force pole tower also must be provided with different height according to the difference in geographical position, particularly exhales the size that claims height again.Shaft tower exhales title highly to be meant the vertical distance of the lower edge edge line of cross-arm under the shaft tower to ground, is designated as H usually.Exhaling of Gan Ta claims it highly is the base altitude of shaft tower, and it plays an important role to safety, the economy of shaft tower.Exhale and claim the calculating formula of height to be:
H＝λ+f
max+h
x+Δh
Wherein, λ is the length of insulator string;
f
MaxIt is the maximum sag of lead;
h
xBe that lead is to ground and by the safe distance of leap thing;
Δ h is a construction nargin.
Under certain tower structure, geographical position, span, electric pressure and weather and electric condition, f
Max, h
x, Δ h is certain, therefore, in fact the length lambda of insulator string has determined exhaling of shaft tower to claim height.Therefore can expect that the use of eliminating suspension insulator can reduce total height of shaft tower, and then the cost of reduction shaft tower and weight etc.
Summary of the invention
In view of this, be necessary to provide a kind of and can eliminate the grid power transmission line shaft tower that insulator string uses.
A kind of grid power transmission line shaft tower, it comprises mobile jib and at least one cross-arm that is arranged on this mobile jib, described mobile jib is made by metal material.The full skirt that described cross-arm comprises a hollow insulating bar and is arranged at this insulating bar outside.Described full skirt is made by sulphurated siliastic.One end of this insulating bar is connected with mobile jib, and the other end is connected with one and hangs gold utensil.This suspension gold utensil extends axially along this cross-arm, and described suspension gold utensil is used to be provided with power line.Described insulating bar is immersed in the resin material by glass fiber yarn and makes.
Further, described cross-arm two ends respectively are provided with a flange, and one in two flanges is used for connecting described cross-arm and mobile jib, and another is used for being provided with described suspension gold utensil.
Further, an end of described suspension gold utensil is arranged on the described insulating bar, and the other end is provided with a suppending hole, and this suppending hole is used to be provided with power line or connects gold utensil.
Further, described sheath and full skirt are one-body molded.
Compared with prior art, grid power transmission line of the present invention uses the support member of the cross-arm of composite material manufacturing as power line with shaft tower, and the arranged outside of cross-arm has the insulated umbrella body, make the grid power transmission line can directly be suspended on power line on the cross-arm with shaft tower, eliminate the use of insulator string, thereby can reduce total height of shaft tower, and then reduce the cost and the weight of shaft tower.
Description of drawings
Fig. 1 is the structural representation of grid power transmission line provided by the invention with shaft tower.
Fig. 2 partly cuts open structural representation for the grid power transmission line among Fig. 1 with the used cross-arm of compound inslation tower.
The specific embodiment
For the present invention being done further explanation, lift a preferred embodiment and conjunction with figs. and be described in detail as follows:
See also Fig. 1 and Fig. 2, it is the structural representation of grid power transmission line provided by the present invention with shaft tower 100.This grid power transmission line comprises a mobile jib 10 with shaft tower 100, and at least one is arranged at the cross-arm 11 on this mobile jib 10.
What also need to further specify is that above-mentioned grid power transmission line is a kind of umbrella font tower with shaft tower 100.What can expect is, described grid power transmission line can also spill a glass type tower for bird bone type transposition tower, bridge type transposition tower, cat head type tower with shaft tower 100, does a kind of in font tower, goat's horn type tower and door type tower or the like.The tower structure of these types and last font tower something in common are all to comprise the basic elements of character such as mobile jib and cross-arm.In the present embodiment, be example only with umbrella font tower, structure and the function of grid power transmission line with shaft tower 100 is described.
Described mobile jib 10 can be prepared by metal material.In the present embodiment, described mobile jib 10 is made a kind of hollow section by steel.The overall height of described mobile jib 10 equals to exhale title highly to add vertical distance and lightning-arrest support height between power line.What certainly expect is, if this mobile jib 10 is underground fixedly the time by being embedded in, the overall height of mobile jib 10 also will add buries the ground degree of depth.
See also Fig. 2, it is the structural representation of described cross-arm 11.In the umbrella font tower in the present embodiment, have six cross-arms 11, wherein, these six cross-arms 11 are divided into the free end upper position that three pairs of arrangements are arranged on mobile jib 10.The lower limb of overhead nearest a pair of cross-arm 11 is referred to as to exhale to the distance between the ground and claims highly.Each is set according to electric pressure the vertical distance between the cross-arm.Because of the structure of described three pairs of cross-arms is identical with function, existing is that example illustrates its structure and function with cross-arm 11 wherein only.Described cross-arm 11 comprises a hollow insulating bar 111, a sheath 112 that is coated on these hollow insulating bar 111 outsides, be arranged at the full skirt 113 in these insulating bar 111 outsides, a flange 114 that is arranged at described hollow insulating bar 111 1 ends, a flange 115 that is arranged at described hollow insulating bar 111 other ends, and be arranged at described flange 115 free-ended suspension gold utensils 116.
Solid hopkinson bar or hollow stem that described hollow insulating bar 111 can be prepared from for the glass fiber that is soaked into by epoxy resin adhesive liquid.When the diameter of this hollow insulating bar 111 during less than certain value such as 110mm, it can prepare by pultrude process.When the diameter of this hollow insulating bar 111 during greater than a certain value such as 110mm, it can prepare by winding process.Described hollow insulating bar 11 is in forming process, and epoxy resin adhesive liquid and glass fiber form epoxy resin-base, i.e. epoxy resin cured product through a series of physicochemical change.Simultaneously, this epoxy resin cured product forms the boundary layer of structure and superior performance between epoxy resin adhesive liquid and glass fiber, this boundary layer is combined into an integral body to glass fiber and epoxide-resin glue, makes the hollow insulating bar of being made by this epoxy resin and glass fiber 111 have favorable mechanical performance and electric property.
Described sheath 112 and full skirt 113 can be made by high-temperature silicon disulfide rubber, auto-vulcanization silicon rubber or liquid curing silicon rubber.In the present embodiment, described sheath 112 and full skirt 113 are coated on the described hollow insulating bar 111 by the high-temperature silicon disulfide rubber integral injection molding, and wherein sheath 112 is arranged between insulating bar 111 and the full skirt 113.What certainly expect is that described sheath 112 also can be made respectively with full skirt 113, and then combines, as boning by viscose glue.Described sheath 112 is coated on the whole hollow insulating bar 111.High-temperature silicon disulfide rubber is that the polysiloxane (being rubber) of HMW (molecular weight is generally 40～800,000) adds reinforced filling and other various additives, the employing organic peroxide is a vulcanizing agent, and a kind of rubber of becoming of interlinkage at high temperature, this rubber abbreviates silicon rubber as.The reinforced filling of high-temperature silicon disulfide rubber can be white carbon, and it can make the intensity of vulcanizate increase by ten times.Add various additives and mainly be the cost that reduces glue, improve properties of rubber and give the various properties of vulcanizate such as fire-retardant, conduction etc.In the present embodiment, described high-temperature silicon disulfide rubber includes with the lower part to be formed: methyl vinyl silicone rubber, white carbon, aluminium hydroxide, silicone oil and vulcanizing agent etc., and the shared weight ratio of described each component is: methyl vinyl silicone rubber 20%～50%, white carbon 20～60%, aluminium hydroxide 25～50%, silicone oil 2～5%, vulcanizing agent 1%.
Described full skirt 113 is in order to increase creep distance to prevent creepage generation.The umbrella body that a plurality of diameter that comprise described full skirt 113 differ.In the present embodiment, described full skirt 113 can comprise many group umbrella bodies, and each group umbrella body comprises the branch umbrella body that three diameter differ.Each long proportional control of skirt of dividing the umbrella body is in certain scope in each group, helps avoiding under the condition of drenching with rain the adjacent minute bridge network between the umbrella body.Be understandable that described cross-arm can comprise a plurality of full skirts 113, also can only have one.When described cross-arm 11 comprised a plurality of full skirt 113, these a plurality of full skirts 113 can be one-body molded, also can distinguish moulding, is bonded in the outside of sheath 112 then by viscose glue.
Described flange 114,115 can be a standard component, and its structure repeats no more in the present embodiment.Described flange 114 is used for this cross-arm 11 is arranged on described mobile jib 10.Be understandable that, a connector (figure does not show) also is set on the body of rod of mobile jib 10, then flange 114 is passed through welding, riveted joint, perhaps the method for screw connection is connected cross-arm 11 on the mobile jib 10.Described flange 115 is used for being provided with suspension gold utensil 116.
Described suspension gold utensil 116 comprises that one is hung pedestal 161 and a suspension part 162 that is arranged on the side that hangs pedestal 161.Described suspension pedestal 161 is connected with flange 115, and its method of attachment can be welding, riveted joint, perhaps other methods of attachment.In the present embodiment, described suspension machine base is connected with flange 115 by bolt.Described suspension part 162 is arranged on the opposite side with respect to flange 115 that hangs pedestal 161.This suspension part 162 is provided with at least one suppending hole 163, is used to wear power line or the connection gold utensil is set.In the present embodiment, described suspension part 162 is provided with two suppending holes 163.
Be understandable that described grid power transmission line can also comprise that with shaft tower 100 at least one is arranged on the suspension rod (figure does not show) between cross-arm 11 and the mobile jib 10.Described suspension rod is used to increase the intensity of cross-arm 11, makes it avoid by the power line stretch bending or pulls off and cause the transmission of electricity accident.The manufactured materials of described suspension rod is similar to the manufactured materials of described insulating bar 111, also is many glass fiber impregnatedly are prepared from resin, has the performance of insulation.Described resin can be polyurethane resin or vinyl ester resin.
Compared with prior art, grid power transmission line of the present invention uses the support member of the cross-arm of composite material manufacturing as power line with shaft tower, and the arranged outside of cross-arm has sheath and full skirt, make the grid power transmission line can directly be suspended on power line on the cross-arm with shaft tower, can not use insulator string, thereby can reduce total height of shaft tower, and then reduce the cost and the weight of shaft tower.
[0027] in addition, those skilled in the art can also do other variation in the spirit of the present invention, as long as it does not depart from technique effect of the present invention, all should be included in the present invention's scope required for protection.
Claims (9)
1. grid power transmission line shaft tower, it comprises mobile jib and at least one cross-arm that is arranged on this mobile jib, described mobile jib is made by metal material, it is characterized in that: the full skirt that described cross-arm comprises a hollow insulating bar and is arranged at this insulating bar outside, described full skirt is made by sulphurated siliastic, one end of this insulating bar is connected with mobile jib, the other end is connected with one and hangs gold utensil, this suspension gold utensil extending axially along this cross-arm, described suspension gold utensil is used to be provided with power line, and described insulating bar is immersed in the resin material by glass fiber yarn and makes.
2. grid power transmission line shaft tower as claimed in claim 1 is characterized in that: described cross-arm two ends respectively are provided with a flange, and one in two flanges is used for connecting described cross-arm and mobile jib, and another is used for being provided with described suspension gold utensil.
3. grid power transmission line shaft tower as claimed in claim 1 is characterized in that: an end of described suspension gold utensil is arranged on the described insulating bar, and the other end is provided with a suppending hole, and this suppending hole is used to be provided with power line or connects gold utensil.
4. grid power transmission line shaft tower as claimed in claim 1 is characterized in that: described grid power transmission line also comprises at least one suspension rod with shaft tower, and this suspension rod is arranged between described mobile jib and the cross-arm.
5. grid power transmission line shaft tower as claimed in claim 4 is characterized in that: described suspension rod is glass fiber impregnatedly made in resin material by many.
6. grid power transmission line shaft tower as claimed in claim 4 is characterized in that: described resin is polyurethane resin or vinyl ester resin.
7. grid power transmission line shaft tower as claimed in claim 1 is characterized in that: described full skirt is by high-temperature silicon disulfide rubber, auto-vulcanization silicon rubber or liquid curing silicon rubber integral injection molding.
8. grid power transmission line shaft tower as claimed in claim 1 is characterized in that: described cross-arm also comprises a sheath that is arranged between described insulating bar and the full skirt.
9. grid power transmission line shaft tower as claimed in claim 8, it is characterized in that: described sheath and full skirt are one-body molded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201261256U CN201747106U (en) | 2010-01-30 | 2010-01-30 | Tower used for power network transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201261256U CN201747106U (en) | 2010-01-30 | 2010-01-30 | Tower used for power network transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201747106U true CN201747106U (en) | 2011-02-16 |
Family
ID=43581787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201261256U Expired - Lifetime CN201747106U (en) | 2010-01-30 | 2010-01-30 | Tower used for power network transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201747106U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261193A (en) * | 2011-06-10 | 2011-11-30 | 北京玻钢院复合材料有限公司 | Composite cross arm for power transmission line and preparation method thereof |
| CN102852370A (en) * | 2012-10-10 | 2013-01-02 | 北京玻钢院复合材料有限公司 | Composite material combined type cross arm for high-tension transmission line tower pole |
| CN102979347A (en) * | 2012-12-24 | 2013-03-20 | 武汉理工大学 | Connecting structure of composite material tower rod and ladder supporting seat |
| CN106121341A (en) * | 2016-08-09 | 2016-11-16 | 国网上海市电力公司 | A kind of extra high voltage network emergency first-aid repair strain rod tower |
| CN112310916A (en) * | 2020-09-29 | 2021-02-02 | 中国电力科学研究院有限公司 | Insulation beam of a portal frame and portal frame |
-
2010
- 2010-01-30 CN CN2010201261256U patent/CN201747106U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102261193A (en) * | 2011-06-10 | 2011-11-30 | 北京玻钢院复合材料有限公司 | Composite cross arm for power transmission line and preparation method thereof |
| CN102261193B (en) * | 2011-06-10 | 2012-12-12 | 北京玻钢院复合材料有限公司 | Composite cross arm for power transmission line and preparation method thereof |
| CN102852370A (en) * | 2012-10-10 | 2013-01-02 | 北京玻钢院复合材料有限公司 | Composite material combined type cross arm for high-tension transmission line tower pole |
| CN102979347A (en) * | 2012-12-24 | 2013-03-20 | 武汉理工大学 | Connecting structure of composite material tower rod and ladder supporting seat |
| CN102979347B (en) * | 2012-12-24 | 2015-04-08 | 武汉理工大学 | Connecting structure of composite material tower rod and ladder supporting seat |
| CN106121341A (en) * | 2016-08-09 | 2016-11-16 | 国网上海市电力公司 | A kind of extra high voltage network emergency first-aid repair strain rod tower |
| CN112310916A (en) * | 2020-09-29 | 2021-02-02 | 中国电力科学研究院有限公司 | Insulation beam of a portal frame and portal frame |
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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: JIANGSU SHENMA ELECTRIC POWER CO., LTD. Free format text: FORMER OWNER: NANTONG SHENMA POWER ELECTRIC + TECHNOLOGY CO., LTD. Effective date: 20110921 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20110921 Address after: The 226553 Jiangsu Rugao towns such as 4, 8, Yang Group Patentee after: Jiangsu Shenma Electric Power Co., Ltd. Address before: 226553 Jiangsu city of Rugao Province towns such as 4, 8, Yang Group Patentee before: Nantong Shenma Electric Power Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110216 |
|
| CX01 | Expiry of patent term |