CN1787720A - Lightning protection anti electrostatic grounding device for crude oil floating top pot floating dish - Google Patents
Lightning protection anti electrostatic grounding device for crude oil floating top pot floating dish Download PDFInfo
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- CN1787720A CN1787720A CN 200510045127 CN200510045127A CN1787720A CN 1787720 A CN1787720 A CN 1787720A CN 200510045127 CN200510045127 CN 200510045127 CN 200510045127 A CN200510045127 A CN 200510045127A CN 1787720 A CN1787720 A CN 1787720A
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Abstract
An earth device of anti-lightning and anti-static includes an installation base, a stainless steel shell, a stainless steel shaft and a turning spring plate of the shaft characterizing in including a wide copper twisted belt, one end of which is fixed on the shaft, the other passes through the open-end of the bottom of the shell and are wrapped by copper wire noses and the bottom of the installation base is set with screws, which is used in anti-lightning and anti-static of a crude oil floating tray of a floating roof tank advantaged that the length of the copper twisted belt from the wall to the tray can be kept at the shortest.
Description
Technical field
The present invention relates to a kind of lightning protection anti electrostatic grounding device and the application in the crude oil floating top pot floating dish lightning protection anti electrostatic thereof.
Background technology
Large-scale crude oil basin is generally floating roof tank, and its floating plate swims in above the crude oil during use.At present, leak from the edge of floating plate in order to prevent crude oil oil vapour, usually with its sealing, this sealing is finished by non-conductive material, generally is acrylonitrile-butadiene rubber, and this material can make electric insulation between floating plate and the tank skin, makes floating plate become isolated conductor.Because crude oil resistivity is higher, crude oil all can produce a large amount of electrostatic charges when thunder and lightning generation and the quick tinning of crude oil, these electric charges will little by little be transferred on the conductor that gravitation is arranged that has an opposite charges, to collect the crude oil electrostatic charge owing to be subjected to the tank skin earth potential to influence floating plate, the induced voltage of this electrostatic charge can reach up to a hundred kilovolts, air breakdown voltage is about 500kV/m, standard floating plate and tank skin gap are about 250mm, because encapsulant is aging and process deviation, floating plate and tank skin gap can dwindle, electrostatic charge induced voltage between the two can form the spill over of igniting property when being about 100kV, in case encapsulant ageing oil vapour overflows, can cause fire incident.
National standard " Code for design of petroleum depots " (GB 50074-2002) and " oil and petroleum installations thunder and lightning safety standard " (GB 15599-95) all have clearly regulation to floating plate lightning protection, anti-static grounding: " floating top oil tank or covered floating roof tank should not installed lightning rod, but should make of 2 leads and be electrically connected floating top and tank body.Floating top oil tank connects lead and should select for use cross section to be not less than 25mm
2The multiple twisted wire of soft copper.For covered floating roof tank, steel floating plate oil tank connects lead and should select for use cross section to be not less than 16mm
2The multiple twisted wire of soft copper; Aluminium matter floating plate oil tank connects lead and should select for use diameter to be not less than the stainless steel steel wire rope of 1.8mm ".Enterprise's crude oil basin floating plate lightning protection, anti-static grounding are generally adopted two 25mm at present
2The multiple twisted wire of soft copper by tank wall top section by being connected with floating plate greater than the high length of jar, the multiple twisted wire of soft copper is scattered on the floating plate when floating plate raises with liquid level, because crude oil vapor sulfur-bearing and exposing to wind and rain very easily corrodes the multiple twisted wire of this soft copper, thereby has potential safety hazard.
At present, a kind of groove tank car handling goods is arranged with electrostatic grounding roll coil of strip box, it is made up of mount pad, disc type cassette housing, rotating shaft and the conductive metal band that twines on it, and this device is used for groove tank car handling goods.
Summary of the invention
The purpose of this invention is to provide a kind of lightning protection anti electrostatic grounding device and the application in the crude oil floating top pot floating dish lightning protection anti electrostatic thereof, it can make the folding and unfolding of wide copper braid over braid, can satisfy the demand of prior art.
A kind of lightning protection anti electrostatic grounding device, comprise mount pad, Stainless Steel Shell, stainless steel rotating shaft, rotating shaft main spring sheet, it is characterized in that having a wide copper braid over braid, its end is fixed in the stainless steel rotating shaft, the other end passes the opening of lower housing portion, and by its termination of copper cash nose parcel, screw is arranged at the bottom of mount pad.
The application of said apparatus in the crude oil floating top pot floating dish lightning protection anti electrostatic.
Advantage of the present invention is to make tank skin keep minimum value to the length of the copper braid over braid of floating plate, can avoid in the prior art because of the copper litz wire twisted wire is scattered in the corrosion that produces on the floating plate, but the wide copper braid over braid of folding and unfolding.
Description of drawings
Accompanying drawing 1 is an apparatus structure schematic diagram of the present invention.
Accompanying drawing 2 is an apparatus structure schematic top plan view of the present invention.
Accompanying drawing 3 is its user mode reference diagram.
Embodiment
Lightning protection anti electrostatic grounding device of the present invention has mount pad 1, Stainless Steel Shell 2 and 6, stainless steel rotating shaft 3, copper cash nose 8, rotating shaft main spring sheet 4, it is characterized in that having a wide copper braid over braid 5, its end is fixed in the stainless steel rotating shaft 3, the other end passes the opening of Stainless Steel Shell 2 bottoms, and connecting a copper cash nose 8 its terminations of parcel, four screws 7 are arranged at the bottom of mount pad 1.During use, this copper cash nose 8 is connected on the floating top pot floating dish 9, stainless steel rotating shaft 3 is installed in Stainless Steel Shell 2,6 centers, main spring sheet 4 one ends are fixed in the stainless steel rotating shaft 3, the other end is fixed on the Stainless Steel Shell 2, makes copper cash nose 8 to the Stainless Steel Shell 2,6 that is connected with wide copper braid over braid 5 form an electric path.
Be connected as a single entity by CARBURIZING FURNACE FOR STAINLESS FASTENER between the Stainless Steel Shell 2 and 6 described in the lightning protection anti electrostatic grounding device of the present invention.Disk housing 2 lower openings are convenient to wide copper braid over braid 5 backrush and are pulled out.
Wide copper braid over braid 5 one ends described in the lightning protection anti electrostatic grounding device of the present invention are connected on the floating top pot floating dish 9 by copper cash nose 8 its terminations of parcel, it can move up and down with floating top pot floating dish 9, stainless steel rotating shaft 3 is under the effect of stainless steel main spring sheet 4, and wide copper braid over braid 5 rollings are in stainless steel rotating shaft 3 or pull out.The top that screw 7 and the mounting bracket 11 of this device by mount pad 1 is installed in crude oil floating roof tank tank skin 10.
The present invention utilizes a wide and thick copper braid over braid 5 tightly to be attached on the axle 3, and shortest path, wide copper braid over braid 5 and constant tension force are combined, and makes the tank skin 10 of crude oil floating roof tank keep minimum value to copper braid over braid 5 length of floating plate 9.Adopting wide copper braid over braid 5 is in order to reduce " kelvin effect ", and conveniently on spool 3, screw, between the floating plate 9 of jar and tank skin 10, obtain one 1 Ω or littler impedance, the crude oil electrostatic charge rapid release the earth that floating plate 9 is collected, thereby use device of the present invention can reach the lightning protection anti electrostatic purpose.
Claims (2)
1, a kind of lightning protection anti electrostatic grounding device, comprise mount pad (1), Stainless Steel Shell (2) and (6), stainless steel rotating shaft (3), rotating shaft main spring sheet (4), it is characterized in that having a wide copper braid over braid (5), its end is fixed in the stainless steel rotating shaft (3), the other end passes the opening of housing (2) bottom, and wrapping up its termination by copper cash nose (8), screw (7) is arranged at the bottom of mount pad (1).
2, claim 1 states the application of device in the crude oil floating top pot floating dish lightning protection anti electrostatic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100451276A CN100415066C (en) | 2005-11-11 | 2005-11-11 | Lightning protection anti electrostatic grounding device for crude oil floating top pot floating dish |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100451276A CN100415066C (en) | 2005-11-11 | 2005-11-11 | Lightning protection anti electrostatic grounding device for crude oil floating top pot floating dish |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1787720A true CN1787720A (en) | 2006-06-14 |
| CN100415066C CN100415066C (en) | 2008-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100451276A Active CN100415066C (en) | 2005-11-11 | 2005-11-11 | Lightning protection anti electrostatic grounding device for crude oil floating top pot floating dish |
Country Status (1)
| Country | Link |
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| CN (1) | CN100415066C (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102832609A (en) * | 2012-08-27 | 2012-12-19 | 新兴重工集团有限公司 | Static conduction device |
| CN102946682A (en) * | 2012-10-30 | 2013-02-27 | 西安信唯信息科技有限公司 | Static electricity eliminating method for floating element of telescopic hatch container |
| CN102991895A (en) * | 2012-10-30 | 2013-03-27 | 西安信唯信息科技有限公司 | Retractable hatch container and floating element equipotential connection system |
| CN103738614A (en) * | 2013-12-30 | 2014-04-23 | 克雷特(大连)科技有限公司 | Floating roof metal storage tank lightning protection grounding device |
| CN104691982A (en) * | 2015-03-06 | 2015-06-10 | 翟占江 | Intrinsic safety type floating roof tank anti-thunder anti-static connector |
| CN104859980A (en) * | 2014-02-20 | 2015-08-26 | 株式会社日立制作所 | Floater Grounding Device |
| CN104875985A (en) * | 2015-04-13 | 2015-09-02 | 江苏飞锦达科技有限公司 | Equipotential connecting device and floater |
| CN105217177A (en) * | 2015-10-08 | 2016-01-06 | 魏琪 | A kind of telescopic floating roof tank earth system |
| CN103988586B (en) * | 2011-10-21 | 2016-11-16 | 雷宁玛斯特公司 | Electrostatic dissipation drainage means and the support of the bypass conductor for the caping tank that floats |
| CN108609315A (en) * | 2016-12-09 | 2018-10-02 | 中国石油化工股份有限公司 | The method for avoiding floating roof tank lightning stroke spark discharge |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1535780A1 (en) * | 1986-11-27 | 1990-01-15 | Центральная Научно-Исследовательская Лаборатория По Борьбе С Потерями Нефти И Нефтепродуктов Госкомнефтепродукта Рсфср | Pontoon of synthetic materials for reducing loss by evaporation during storage of readily inflammable liquid in reservoir |
| CN2225121Y (en) * | 1994-12-09 | 1996-04-17 | 崔恩贵 | Winding style electrostatic guide |
| CN2442972Y (en) * | 2000-08-28 | 2001-08-15 | 王明文 | Electrostatic ground band coiling box for loading and unloading goods of tank car |
| JP3656109B2 (en) * | 2001-02-07 | 2005-06-08 | 学校法人東京電機大学 | Method and apparatus for preventing discharge ignition and explosion of electrically insulating combustible liquid in container |
| CN2573428Y (en) * | 2002-10-14 | 2003-09-17 | 孙元 | Secondary arc eliminating 'on' device for floating-roof tank |
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2005
- 2005-11-11 CN CNB2005100451276A patent/CN100415066C/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103988586B (en) * | 2011-10-21 | 2016-11-16 | 雷宁玛斯特公司 | Electrostatic dissipation drainage means and the support of the bypass conductor for the caping tank that floats |
| CN102832609A (en) * | 2012-08-27 | 2012-12-19 | 新兴重工集团有限公司 | Static conduction device |
| CN102832609B (en) * | 2012-08-27 | 2014-09-17 | 新兴重工集团有限公司 | Static conduction device |
| CN102946682A (en) * | 2012-10-30 | 2013-02-27 | 西安信唯信息科技有限公司 | Static electricity eliminating method for floating element of telescopic hatch container |
| CN102991895A (en) * | 2012-10-30 | 2013-03-27 | 西安信唯信息科技有限公司 | Retractable hatch container and floating element equipotential connection system |
| CN102991895B (en) * | 2012-10-30 | 2017-05-24 | 河北珠峰仪器仪表设备有限公司 | Retractable hatch container and floating element equipotential connection system |
| CN103738614A (en) * | 2013-12-30 | 2014-04-23 | 克雷特(大连)科技有限公司 | Floating roof metal storage tank lightning protection grounding device |
| CN104859980A (en) * | 2014-02-20 | 2015-08-26 | 株式会社日立制作所 | Floater Grounding Device |
| CN104691982A (en) * | 2015-03-06 | 2015-06-10 | 翟占江 | Intrinsic safety type floating roof tank anti-thunder anti-static connector |
| CN104875985A (en) * | 2015-04-13 | 2015-09-02 | 江苏飞锦达科技有限公司 | Equipotential connecting device and floater |
| CN105217177A (en) * | 2015-10-08 | 2016-01-06 | 魏琪 | A kind of telescopic floating roof tank earth system |
| CN105217177B (en) * | 2015-10-08 | 2018-02-06 | 魏旗 | A kind of telescopic floating roof tank earthing or grounding means |
| CN108609315A (en) * | 2016-12-09 | 2018-10-02 | 中国石油化工股份有限公司 | The method for avoiding floating roof tank lightning stroke spark discharge |
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| Publication number | Publication date |
|---|---|
| CN100415066C (en) | 2008-08-27 |
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