CN103037673B - Fixed-type shield frame for improving power frequency electric (magnetic) field around overhead transmission line - Google Patents
Fixed-type shield frame for improving power frequency electric (magnetic) field around overhead transmission line Download PDFInfo
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- CN103037673B CN103037673B CN201210532943.XA CN201210532943A CN103037673B CN 103037673 B CN103037673 B CN 103037673B CN 201210532943 A CN201210532943 A CN 201210532943A CN 103037673 B CN103037673 B CN 103037673B
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- gauze screen
- vertical rod
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- fence
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 20
- 230000005672 electromagnetic field Effects 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 7
- 238000010276 construction Methods 0.000 description 2
- 230000005670 electromagnetic radiation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
Provided is a fixed-type shield frame for improving a power frequency electric (magnetic) field around a overhead transmission line. The fixed-type shield frame for improving the power frequency electric (magnetic) field around the overhead transmission line includes shielding net vertical rods (3). The two shielding net vertical rods (3) distributed along the transmission line (6). Two shielding net horizontal rods (4) which are respectively arranged at the upper portion and lower portion are fixed horizontally between the adjacent two shielding net vertical rods (3). A rectangular frame is formed by the shielding net vertical rods (3) and the shielding net horizontal rods (4). Shielding net fixed holes suitable for fixing a shielding net are respectively arranged on the shielding net vertical rods (3) and the shielding net horizontal rods (4) in a uniform mode. An end-to-end electromagnetic shielding frame is formed by fence horizontal rods and the shielding net horizontal rods, and the shielding net horizontal rods are fixed by the shielding net vertical rods. The rectangular frame formed by the shielding net vertical rods and the shielding net horizontal rods enables the installation of the shielding net convenient, and the rectangular frame has the advantages of being strong in structure and good in stability. Besides, the rectangular frame is suitable for installing an integral-type shielding net or one weaved by horizontal shielding wires and vertical shielding wires. The shielding effect of a shielding frame on the electromagnetic field is good, and has a wide range of application.
Description
Technical field
The present invention relates to a kind of shielded rack, particularly relate to one and improve overhead transmission line periphery power frequency electromagnetic field fixed shielding frame, belong to electromagnetic protection technical field.
Background technology
Overhead transmission line can produce the electromagnetic field of some strength in running, and electromagnetic radiation exceedes after after certain value and can have a negative impact to the productive life of people.For improving the power frequency electromagnet field intensity of the building of overhead transmission line periphery, make it the requirement meeting " 4kV/m residential block power frequency electric field evaluation criterion " in HJ/T 24-1998 " 500kV superhigh pressure transmission and transformation engineering electromagnetic radiation environment effect appraise technical specification ".Existing electromagnetic-field-shielded shelf structure is simple, not firmly, undesirable to the shield effectiveness of electromagnetism.
As Chinese utility model patent notification number: CN202405667U, publication date: the utility model patent on August 29th, 2012 discloses the box transformer station of a kind of electromagnetic shielding, comprise box type substation door, the framework embedded when box type substation door closure state, elastic conducting material, this elastic conducting material is arranged on periphery inside box type substation door and corresponding with the position of framework, elastic conducting material during box type substation door closure state contacts with framework, the periphery of box type substation door arranges a circle metallic plate one, metallic plate one and box type substation door conductive contact, the surrounding of framework arranges metallic plate two, metallic plate one during box type substation door closure state is contacted with metallic plate two by elastic conducting material.But this electromagnetic screen adopts metallic plate to make, and cost is higher, is not suitable for extensive installation, uses and receives certain restriction.
Summary of the invention
The object of the invention is for existing electromagnetic-field-shielded shelf structure simple, firm not, the defect not good to the shield effectiveness of electromagnetism and deficiency, there is provided a kind of easy for installation, sound construction, the demand of different length and height can be met, the improvement overhead transmission line periphery power frequency electromagnetic field fixed shielding frame good to the shield effectiveness of electromagnetism.
For achieving the above object, technical solution of the present invention is: improve overhead transmission line periphery power frequency electromagnetic field fixed shielding frame, comprise gauze screen vertical rod, described gauze screen vertical rod is two, and along power transmission line move towards distribution, between two adjacent gauze screen vertical rods, level is fixed with upper and lower two gauze screen cross bars, gauze screen vertical rod and gauze screen cross bar form rectangular frame, gauze screen vertical rod and gauze screen cross bar evenly offer respectively the fixing hole of fixed mask net, the sidewall of every root gauze screen vertical rod is fixed with one end level of fence cross bar respectively, the rectangular frame plane being perpendicular that fence cross bar and gauze screen vertical rod and gauze screen cross bar are formed, the other end of fence cross bar is vertically fixed on fence vertical rod, fence vertical rod is two, also fence cross bar is fixed with between on two adjacent rhizosphere hurdle vertical rods, fence cross bar, fence vertical rod, gauze screen vertical rod and gauze screen cross bar form a rectangular frame jointly.
Described fence cross bar, fence vertical rod, gauze screen vertical rod and gauze screen cross bar all adopt the good metal of magnetic property to make.
Described fixing hole is provided with the binding post of fixed mask net.
The invention has the beneficial effects as follows:
1. the present invention forms an end to end electromagnetic shielding framework by fence cross bar and gauze screen cross bar, gauze screen cross bar is fixed by gauze screen vertical rod, the framework of gauze screen vertical rod and gauze screen cross bar composition can easily install gauze screen, sound construction, good stability.
2. structure of the present invention is simple, and can install integrated shielding net or be interweaved the gauze screen formed by horizontal and vertical shielding conductor, to the shield effectiveness of electromagnetism well, long service life, the scope of application is extensive for shielded rack.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is using state figure of the present invention.
In figure: fence cross bar 1, fence vertical rod 2, gauze screen vertical rod 3, gauze screen cross bar 4, fixing hole 5, power transmission line 6, roof 7.
Embodiment
Illustrate that the present invention is described in further detail with embodiment below in conjunction with accompanying drawing.
See Fig. 1, Fig. 2, of the present inventionly improve overhead transmission line periphery power frequency electromagnetic field fixed shielding frame, comprise gauze screen vertical rod 3, gauze screen vertical rod 3 is fixed on roof 7, described gauze screen vertical rod 3 is two, and along power transmission line 6 move towards distribution, between two adjacent gauze screen vertical rods 3, level is fixed with upper and lower two gauze screen cross bars 4, gauze screen vertical rod 3 and gauze screen cross bar 4 form rectangular frame, gauze screen vertical rod 3 and gauze screen cross bar 4 evenly offer respectively the fixing hole 5 of fixed mask net, the sidewall of every root gauze screen vertical rod 3 is fixed with one end level of fence cross bar 1 respectively, the rectangular frame plane being perpendicular that fence cross bar 1 is formed with gauze screen vertical rod 3 and gauze screen cross bar 4, the other end of fence cross bar 1 is vertically fixed on fence vertical rod 2, fence vertical rod 2 is two, also fence cross bar 1 is fixed with between on two adjacent rhizosphere hurdle vertical rods 2, fence cross bar 1, fence vertical rod 2, gauze screen vertical rod 3 and gauze screen cross bar 4 form a rectangular frame jointly.
Described fence cross bar 1, fence vertical rod 2, gauze screen vertical rod 3 and gauze screen cross bar 4 all adopt the good metal of magnetic property to make.
Described fixing hole 5 is provided with the binding post of fixed mask net.
Fence vertical rod 2 and two gauze screen vertical rods 3 of more than two are vertically fixed on roof 7 respectively, and two gauze screen vertical rods 3 move towards distribution along power transmission line 6.Between two adjacent gauze screen vertical rods 3, level is fixed with upper and lower two gauze screen cross bars 4, and the framework that gauze screen vertical rod 3 and gauze screen cross bar 4 form is used for fixing gauze screen.Gauze screen is integrated shielding net or is interweaved the gauze screen formed by horizontal and vertical shielding conductor, gauze screen vertical rod 3 and gauze screen cross bar 4 evenly offer the fixing hole 5 of fixed mask net, fixing hole 5 is provided with the binding post of fixed mask net, the horizontal and vertical shielding conductor of composition gauze screen is fixed on binding post, also the gauze screen of tape frame directly can be bolted on fixing hole 5.
The sidewall of gauze screen vertical rod 3 is vertically fixed with on one end of fence cross bar 1, the other end of fence cross bar 1 is vertically fixed on fence vertical rod 2, also be fixed with fence cross bar 1 between two adjacent rhizosphere hurdle vertical rods 2, fence cross bar 1 and gauze screen cross bar 4 form an end to end electromagnetic shielding framework.Fence cross bar 1, fence vertical rod 2, gauze screen vertical rod 3 and gauze screen cross bar 4 all adopt the good metal of magnetic property to make, and have good magnetic property, and Simultaneous Stabilization is firm, long service life.
Claims (3)
1. improve overhead transmission line periphery power frequency electromagnetic field fixed shielding frame, comprise gauze screen vertical rod (3), it is characterized in that: described gauze screen vertical rod (3) is two, and along power transmission line (6) move towards distribution, between two adjacent gauze screen vertical rods (3), level is fixed with upper and lower two gauze screen cross bars (4), gauze screen vertical rod (3) and gauze screen cross bar (4) form rectangular frame, gauze screen vertical rod (3) and gauze screen cross bar (4) evenly offer respectively the fixing hole (5) of fixed mask net, the sidewall of every root gauze screen vertical rod (3) is fixed with one end level of fence cross bar (1) respectively, the rectangular frame plane being perpendicular that fence cross bar (1) is formed with gauze screen vertical rod (3) and gauze screen cross bar (4), the other end of fence cross bar (1) is vertically fixed on fence vertical rod (2), fence vertical rod (2) is two, also fence cross bar (1) is fixed with between two adjacent rhizosphere hurdles vertical rod (2) are upper, fence cross bar (1), fence vertical rod (2), gauze screen vertical rod (3) and gauze screen cross bar (4) form a rectangular frame jointly.
2. according to claim 1ly improve overhead transmission line periphery power frequency electromagnetic field fixed shielding frame, it is characterized in that: described fence cross bar (1), fence vertical rod (2), gauze screen vertical rod (3) and gauze screen cross bar (4) all adopt the good metal of magnetic property to make.
3. according to claim 1ly improve overhead transmission line periphery power frequency electromagnetic field fixed shielding frame, it is characterized in that: the binding post described fixing hole (5) being provided with fixed mask net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532943.XA CN103037673B (en) | 2012-12-12 | 2012-12-12 | Fixed-type shield frame for improving power frequency electric (magnetic) field around overhead transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532943.XA CN103037673B (en) | 2012-12-12 | 2012-12-12 | Fixed-type shield frame for improving power frequency electric (magnetic) field around overhead transmission line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103037673A CN103037673A (en) | 2013-04-10 |
| CN103037673B true CN103037673B (en) | 2015-04-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210532943.XA Active CN103037673B (en) | 2012-12-12 | 2012-12-12 | Fixed-type shield frame for improving power frequency electric (magnetic) field around overhead transmission line |
Country Status (1)
| Country | Link |
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| CN (1) | CN103037673B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349720A (en) * | 2008-08-28 | 2009-01-21 | 重庆电力科学试验研究院 | High pressure overhead power line power frequency electric field shielding analysis method |
| CN202308832U (en) * | 2011-09-26 | 2012-07-04 | 河北电力设备厂 | Net door of net-sticking type box transformer substation |
-
2012
- 2012-12-12 CN CN201210532943.XA patent/CN103037673B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101349720A (en) * | 2008-08-28 | 2009-01-21 | 重庆电力科学试验研究院 | High pressure overhead power line power frequency electric field shielding analysis method |
| CN202308832U (en) * | 2011-09-26 | 2012-07-04 | 河北电力设备厂 | Net door of net-sticking type box transformer substation |
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| Publication number | Publication date |
|---|---|
| CN103037673A (en) | 2013-04-10 |
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Effective date of registration: 20160912 Address after: 430077 No. 47 Xu Dong Road, fruit lake street, Wuchang District, Hubei, Wuhan Patentee after: Econimic Research Institute of Grid State Hubei Power Supply Company Patentee after: Hubei Electric Power Research Institute of Power Company Patentee after: State Grid Corporation of China Address before: 430077, 359 East Main Street, Wuchang District, Hubei, Wuhan Patentee before: Wuhan Central China Power Grid Co., Ltd. Patentee before: Hubei Electric Power Research Institute of Power Company Patentee before: State Grid Corporation of China |