CN103052308A - Fixed shielding net for improving peripheral power frequency electric (magnetic) field of overhead transmission line - Google Patents
Fixed shielding net for improving peripheral power frequency electric (magnetic) field of overhead transmission line Download PDFInfo
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- CN103052308A CN103052308A CN2012105329459A CN201210532945A CN103052308A CN 103052308 A CN103052308 A CN 103052308A CN 2012105329459 A CN2012105329459 A CN 2012105329459A CN 201210532945 A CN201210532945 A CN 201210532945A CN 103052308 A CN103052308 A CN 103052308A
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- fixed lever
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- horizontal fixed
- gauze screen
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Abstract
The invention relates to a fixed shielding net for improving a peripheral power frequency electric (magnetic) field of an overhead transmission line. The fixed shielding net comprises vertical fixing rods (1) and horizontal fixing rods (2), wherein the vertical fixing rods (1), upper horizontal fixing rods (2) and lower horizontal fixing rods (3) are respectively and equidistantly provided with through holes, the through holes are provided with connection fixing assemblies (7), the two connection fixing assemblies (7) with the equal height on each vertical fixing rod (1) are respectively and fixedly arranged on two ends of each shielding net transverse line (5), and the connection fixing assemblies (7) on each upper horizontal fixing rod (2) are fixedly arranged on one end of each shielding net longitudinal line (6). The fixed shielding net disclosed by the invention has the advantages of simple structure and convenience in installation and fixation; and the shielding net transverse lines and the shielding net longitudinal lines (6) are mutually interlaced to form an electromagnetic shielding net so that an electromagnetic shielding effect is good, the shielding effect can reach the national standard and the application range is wide.
Description
Technical field
The present invention relates to a kind of gauze screen, relate in particular to a kind of overhead transmission line periphery power frequency electricity (magnetic) field of improving and use the fixed shielding net, belong to the electromagnetic protection technical field.
Background technology
Overhead transmission line can produce the electromagnetic field of some strength in running, electromagnetic radiation can have a negative impact to people's productive life after behind the certain value.Power frequency electromagnet field intensity for the building that improves the overhead transmission line periphery makes it to satisfy the requirement of " 4kV/m residential block power frequency electric field evaluation criterion " among the HJ/T 24-1998 " 500kV superhigh pressure transmission and transformation engineering electromagnetic radiation environment affects the assessment technique standard ".Existing gauze screen is simple in structure, installs and fixes inconvenience, can not select as required the density of gauze screen, and effectiveness is not good.
Such as Chinese invention patent notification number: CN102056469A, open day: the patent of invention on May 11st, 2011 disclosed the gauze screen draw off gear, it is by main shaft, drive sprocket, shaft stool, the guide rail holder, gauze screen forms, be provided with guide rail by the both sides at gauze screen, upper end at guide rail is provided with main shaft, end at main shaft is provided with drive sprocket, one end of main shaft is fixed on the guide rail by shaft stool, main shaft be provided with gauze screen, gauze screen is provided with several slide blocks on the both sides of net, slide block can in the guide rail that the both sides of gauze screen arrange, slide up and down.But this device volume is larger, can only carry out folding and unfolding to gauze screen, can not effectively shield electromagnetism, uses inconvenient.
Summary of the invention
The objective of the invention is to install and fix inconvenience for existing gauze screen, can not select as required the density of gauze screen, the defective that effectiveness is not good and deficiency, provide a kind of simple in structure, easy for installation, can select as required the density of gauze screen, effectiveness is good improves overhead transmission line periphery power frequency electricity (magnetic) field fixed shielding net.
For achieving the above object, technical solution of the present invention is: improve overhead transmission line periphery power frequency electricity (magnetic) field fixed shielding net, comprise vertical fixed lever and horizontal fixed lever, vertical fixed lever and upper horizontal fixed lever consist of door type or two vertical fixed levers and upper horizontal fixed lever and the lower horizontal fixed lever formation rectangle that joins end to end, described vertical fixed lever, the equally spaced through hole that offers respectively on upper horizontal fixed lever and the lower horizontal fixed lever, connection fixture is installed on the through hole, two connection fixtures of equal height fix with the two ends of gauze screen x wire respectively on the vertical fixed lever, upper horizontal fixed lever equal intervals offer through hole, connection fixture is installed on the through hole, one end of gauze screen vertical line and the connection fixture on the upper horizontal fixed lever fix, the other end of gauze screen vertical line fix corresponding to the connection fixture on the lower horizontal fixed lever or directly with perpendicular the fixing of gauze screen x wire that is positioned at bottom.
The bottom of described vertical fixed lever is installed on the hold-down support.
The centre of described connection fixture is provided with through hole, offers screwed hole on the sidewall of connection fixture, and clamping screw is installed in the screwed hole.
Described gauze screen x wire and gauze screen vertical line all adopt the annealed copper wire with good magnetic property.
Described vertical fixed lever, upper horizontal fixed lever and lower horizontal fixed lever adopt the good metal of magnetic property to make.
The invention has the beneficial effects as follows:
1. the present invention is fixed with upper horizontal fixed lever and lower horizontal fixed lever between vertical fixed lever, and the equally spaced connection fixture that is fixed with respectively on vertical fixed lever, upper horizontal fixed lever and lower horizontal fixed lever, be fixedly connected with gauze screen x wire and gauze screen vertical line by connection fixture, gauze screen x wire and gauze screen vertical line are intertwined to form the electromagnetic shielding net.
2. the present invention is simple in structure, installs and fixes easily, and good to the shield effectiveness of electromagnetism, shield effectiveness can be up to state standards, and the scope of application is wide.
Description of drawings
Fig. 1 is the first structural representation of the present invention.
Fig. 2 is the second structural representation of the present invention.
Among the figure: vertical fixed lever 1, upper horizontal fixed lever 2, lower horizontal fixed lever 3, hold-down support 4, gauze screen x wire 5, gauze screen vertical line 6, connection fixture 7, power transmission line 8, house owed by a citizen 9.
Embodiment
The present invention is described in further detail below in conjunction with description of drawings and embodiment.
Referring to Fig. 1, Fig. 2, overhead transmission line periphery power frequency electricity (magnetic) the field fixed shielding net that improves of the present invention, comprise vertical fixed lever 1 and horizontal fixed lever 2, vertical fixed lever 1 and upper horizontal fixed lever 2 consist of door types or two vertical fixed levers 1 and upper horizontal fixed lever 2 and the lower horizontal fixed lever 3 formation rectangle that joins end to end, described vertical fixed lever 1, the equally spaced through hole that offers respectively on upper horizontal fixed lever 2 and the lower horizontal fixed lever 3, connection fixture 7 is installed on the through hole, two connection fixtures 7 of equal height fix with the two ends of gauze screen x wire 5 respectively on the vertical fixed lever 1, upper horizontal fixed lever 2 equal intervals offer through hole, connection fixture 7 is installed on the through hole, one end of gauze screen vertical line 6 and the connection fixture 7 on the upper horizontal fixed lever 2 fix, and the other end of gauze screen vertical line 6 is perpendicular fixing corresponding to the connection fixture 7 gauze screen x wires 5 fixing or direct and that be positioned at bottom on the lower horizontal fixed lever 3.
The bottom of described vertical fixed lever 1 is installed on the hold-down support 3.
The centre of described connection fixture 7 is provided with through hole, offers screwed hole on the sidewall of connection fixture 7, and clamping screw is installed in the screwed hole.
Described gauze screen x wire 5 and gauze screen vertical line 6 all adopt the annealed copper wire with good magnetic property.
Described vertical fixed lever 1, upper horizontal fixed lever 2 and lower horizontal fixed lever 3 adopt the good metal of magnetic property to make.
Vertical fixed lever 1 is two, the bottom of vertical fixed lever 1 is installed in respectively on the hold-down support 3, be mounted with upper horizontal fixed lever 2 between the vertical fixed lever 1 and consist of door type framework, perhaps be mounted with upper horizontal fixed lever 2 and lower horizontal fixed lever 3 between the vertical fixed lever 1, form rectangular frame.Vertical fixed lever 1, upper horizontal fixed lever 2 and lower horizontal fixed lever 3 adopt the good metal of magnetic property to make, and can play the effect of preferably support and magnetic conduction.
The equally spaced through hole that offers respectively on vertical fixed lever 1, upper horizontal fixed lever 2 and the lower horizontal fixed lever 3 is equipped with connection fixture 7 on the through hole.The centre of connection fixture 7 is provided with through hole, offers screwed hole on the sidewall of connection fixture 7, and clamping screw is installed in the screwed hole, and connection fixture 7 is used for fixed mask net x wire 5 and gauze screen vertical line 6.Gauze screen x wire 5 and gauze screen vertical line 6 all adopt the annealed copper wire with good magnetic property.
When adopting door type framework, two connection fixtures 7 of equal height fix with the two ends of gauze screen x wire 5 respectively on the vertical fixed lever 1, one end of gauze screen vertical line 6 and the connection fixture 7 on the upper horizontal fixed lever 2 fix, the other end of gauze screen vertical line 6 is fixing corresponding to the connection fixture 7 on the lower horizontal fixed lever 3, and gauze screen x wire 5 and gauze screen vertical line 6 are at the horizontal and vertical electromagnetic shielding net that has been intertwined to form like this.
When adopting rectangular frame, two connection fixtures 7 of equal height fix with the two ends of gauze screen x wire 5 respectively on the vertical fixed lever 1, one end of gauze screen vertical line 6 and the connection fixture 7 on the upper horizontal fixed lever 2 fix, the other end of gauze screen vertical line 6 is perpendicular fixing with the gauze screen x wire 5 that is positioned at bottom, same gauze screen x wire 5 and gauze screen vertical line 6 are at the horizontal and vertical electromagnetic shielding net that has been intertwined to form, also gauze screen x wire 5 and gauze screen vertical line 6 can be fixed on first on the framework, then with this frame installation at vertical fixed lever 1, on upper horizontal fixed lever 2 and the lower horizontal fixed lever 3.
Claims (5)
1. improve overhead transmission line periphery power frequency electricity (magnetic) field fixed shielding net, comprise vertical fixed lever (1) and horizontal fixed lever (2), vertical fixed lever (1) and upper horizontal fixed lever (2) consist of door type or two vertical fixed levers (1) and upper horizontal fixed lever (2) and lower horizontal fixed lever (3) the formation rectangle that joins end to end, it is characterized in that: described vertical fixed lever (1), the equally spaced through hole that offers respectively on upper horizontal fixed lever (2) and the lower horizontal fixed lever (3), connection fixture (7) is installed on the through hole, two connection fixtures (7) of the upper equal height of vertical fixed lever (1) fix with the two ends of gauze screen x wire (5) respectively, upper horizontal fixed lever (2) equal intervals offer through hole, connection fixture (7) is installed on the through hole, connection fixture (7) on one end of gauze screen vertical line (6) and the upper horizontal fixed lever (2) fixes, and the other end of gauze screen vertical line (6) gauze screen x wire (5) fixing or direct corresponding to the connection fixture (7) on the lower horizontal fixed lever (3) and that be positioned at bottom is perpendicular fixing.
2. the fixed shielding net is used in overhead transmission line periphery power frequency electricity (magnetic) field of improving according to claim 1, and it is characterized in that: the bottom of described vertical fixed lever (1) is installed on the hold-down support (3).
3. overhead transmission line periphery power frequency electricity (magnetic) the field fixed shielding net that improves according to claim 1, it is characterized in that: the centre of described connection fixture (7) is provided with through hole, offer screwed hole on the sidewall of connection fixture (7), clamping screw is installed in the screwed hole.
4. the fixed shielding net is used in overhead transmission line periphery power frequency electricity (magnetic) field of improving according to claim 1, and it is characterized in that: described gauze screen x wire (5) and gauze screen vertical line (6) all adopt the annealed copper wire with good magnetic property.
5. the fixed shielding net is used in overhead transmission line periphery power frequency electricity (magnetic) field of improving according to claim 1, and it is characterized in that: described vertical fixed lever (1), upper horizontal fixed lever (2) and lower horizontal fixed lever (3) adopt the good metal of magnetic property to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532945.9A CN103052308B (en) | 2012-12-12 | 2012-12-12 | Improve overhead transmission line periphery power frequency electromagnetic field fixed shielding net |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210532945.9A CN103052308B (en) | 2012-12-12 | 2012-12-12 | Improve overhead transmission line periphery power frequency electromagnetic field fixed shielding net |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103052308A true CN103052308A (en) | 2013-04-17 |
| CN103052308B CN103052308B (en) | 2015-09-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210532945.9A Active CN103052308B (en) | 2012-12-12 | 2012-12-12 | Improve overhead transmission line periphery power frequency electromagnetic field fixed shielding net |
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| Country | Link |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02302098A (en) * | 1989-05-17 | 1990-12-14 | Fukuvi Chem Ind Co Ltd | See-through electromagnetic wave shielding material |
| CN2346919Y (en) * | 1998-10-24 | 1999-11-03 | 王玺 | Cloth fire-proofing shutter |
| CN201191741Y (en) * | 2008-04-22 | 2009-02-04 | 上海市电力公司 | Three phase conductive wire insulation fixing rack |
| CN102056469A (en) * | 2009-10-29 | 2011-05-11 | 范茂荣 | Retraction device for shielding net |
-
2012
- 2012-12-12 CN CN201210532945.9A patent/CN103052308B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02302098A (en) * | 1989-05-17 | 1990-12-14 | Fukuvi Chem Ind Co Ltd | See-through electromagnetic wave shielding material |
| CN2346919Y (en) * | 1998-10-24 | 1999-11-03 | 王玺 | Cloth fire-proofing shutter |
| CN201191741Y (en) * | 2008-04-22 | 2009-02-04 | 上海市电力公司 | Three phase conductive wire insulation fixing rack |
| CN102056469A (en) * | 2009-10-29 | 2011-05-11 | 范茂荣 | Retraction device for shielding net |
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| Publication number | Publication date |
|---|---|
| CN103052308B (en) | 2015-09-23 |
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Effective date of registration: 20161009 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 |