Telescopic hatch container and float element equipotential connection welding system
Technical field
The present invention relates to a kind of equipotential connection connection mechanism, particularly telescopic hatch container and float element equipotential connection welding system are used for the hatch container and are connected with the equipotential of float element, the effect that can play lightning protection anti electrostatic, avoid fire to occur.
Background technology
Hatch container among the present invention refers to that mainly these liquid dielectrics are generally volatile for the uncovered storage tank of steel welding that stores such as crude oil, diesel oil, gasoline, benzene and some chemical-liquid-mediums, and float element is in order to prevent these liquid dielectric evaporations.
Owing to having certain gap between hatch container and the float element, be provided with during this time sealant tape between the gap, the friction of they and hatch wall of container can produce static, and these static need actv. to derive, and is connected with equipotential between the float element to guarantee the hatch container.
Regulation according to SH3046 " petrochemical complex vertical cylinder steel welding tank design standard ": " when the soft seal of adopting non-metallic material to make, adopt at least two sectional areas to be not less than 16mm
2The multiple twisted wire of soft copper connects floating roof and tank skin." by being connected with floating roof greater than the high length of tank, when the floating roof liquid level raises soft copper again twisted wire be scattered on the floating roof, owing to exposing to wind and rain and the impact of environment makes this soft copper answer twisted wire very easily to corrode, thereby have potential safety hazard.Because the soft copper conductor length is longer, therefore no matter float element is in any position, its resistance is all larger, leads electrostatic interaction thereby lost to a great extent.
At thunderstorm weather, between the aerial charged cloud, between charged cloud and the peripheral facilities, all have discharging condition between charged cloud and the ground, these discharges can cause the acute variation of electric field around the hatch container.In order to reach the balance of electric field, induced charge on the float element in the hatch container can be released according to certain rules, and existing 2 of connecting hatch container and float element weave the moment that flex leads are difficult to satisfy induced charge and release, and will form transient potential between hatch container and the float element poor.The caulking gum that arranges between hatch container and the float element in addition also can cause the electric insulating between float element and the hatch container, metal object on the while sealant tape, all there is discharging condition such as conducting strip, tie bolt, metal sealing plate etc., in case difference of potential and spacing between they and the hatch container reach discharging condition, will the discharge generation spark, become the ignition source of accident.
Summary of the invention
The purpose of this invention is to provide a kind of safety is good, reliability is high telescopic hatch container and float element equipotential connection welding system, with lightning protection anti electrostatic, avoid the generation of fire.
The object of the present invention is achieved like this, telescopic hatch container and float element equipotential connection welding system, it is characterized in that: comprising: supporting seat, rotating shaft, static let-off gear(stand), the multiple twisted wire of wide copper, revolution wind spring, housing, housing is divided into inner and outer shell, inner and outer shell forms A cavity and B cavity, inner and outer shell is take rotating shaft coaxial distribution as the axle center, the revolution wind spring is wrapped in the rotating shaft, the two ends of revolution wind spring are fixed with rotating shaft and inner housing respectively, and the number of turns changes with the rotating shaft rotation in the B cavity to make the revolution wind spring; The multiple twisted wire of wide copper is wrapped in the A cavity of inner housing periphery, one end of the multiple twisted wire of wide copper is fixed in the rotating shaft, and the other end passes the opening of A cavity, is connected with float element by the static let-off gear(stand) again, housing is connected with supporting seat, and supporting seat is fixed by mount pad and telescopic hatch container upper end.
Described static let-off gear(stand) is to fix two copper axles at the static guiding ejecting plate to consist of, the multiple twisted wire of wide copper passes two copper axles, the static guiding ejecting plate is fixed on the housing, and then is electrically connected with tank body, the static charge on the float element can be passed to tank body by the multiple twisted wire of wide copper.
On the described supporting seat latching device is arranged, latching device and housing are dynamically connected, and latching device is for locking shell when mounted, stops the housing automatic rotary, make the multiple twisted wire of the wide copper that pulls out can automatic drawing back.
Described hull outside is enclosed with rainproof cover, can prevent wind and weather by actv., and surrounding environment is to the erosion of the multiple twisted wire of wide copper.
Advantage of the present invention is 1) the multiple twisted wire of wide copper is fixed on the housing, and housing is fixed on the hatch container by mount pad, thereby makes the multiple twisted wire of wide copper and hatch container become a loop.2) the multiple twisted wire of wide copper passes the static let-off gear(stand), and the static let-off gear(stand) is fixed on the housing, and housing is fixed on the hatch container by mount pad, thereby makes the multiple twisted wire of wide copper and hatch container form another loop.Can better the static charge on the float element be passed to the hatch container by the multiple twisted wire of wide copper, and then pass to the earth.This dual mode makes in the A chamber the multiple twisted wire line of wide copper form one with the hatch container dynamically to be connected, to keep good equipotential connection, thereby sets up good equipotential connection actv. lightning protection anti electrostatic.Avoid the generation of fire.
Description of drawings
The present invention will be further described below in conjunction with the embodiment accompanying drawing:
Accompanying drawing 1 is embodiment of the invention structural representation;
Accompanying drawing 2 is the downward section-drawings of Fig. 1 line of centers;
Accompanying drawing 3 is that the present invention uses state reference map.
Among the figure, 1, mount pad; 2, supporting seat; 3, latching device; 4, copper sheathing; 5, rotating shaft; 6, static let-off gear(stand); 7, the multiple twisted wire of wide copper; 8, revolution wind spring; 9, housing; 10, rainproof cover; 11, float element; 12, tank body.
The specific embodiment
As depicted in figs. 1 and 2, telescopic hatch container and float element equipotential connection welding system comprise: supporting seat 2, rotating shaft 5, static let-off gear(stand) 6, the multiple twisted wire 7 of wide copper, revolution wind spring 8, housing 9, housing 9 is divided into inner and outer shell, inner and outer shell forms A cavity and B cavity, inner and outer shell is take rotating shaft 5 coaxial distribution as the axle center, revolution wind spring 8 is wrapped in the rotating shaft 5, respectively there is a copper sheathing 4 at rotating shaft 5 two ends, the two ends of revolution wind spring 8 are fixed with rotating shaft 5 and inner housing respectively, and revolution wind spring 8 is rotated and number of turns variation with rotating shaft 5 in the B cavity; The multiple twisted wire 7 of wide copper is wrapped in the A cavity of inner housing periphery, and an end of the multiple twisted wire 7 of wide copper is fixed in the rotating shaft 5, and the other end passes the opening of A cavity, is connected with bolt with float element by static let-off gear(stand) 6 again, and conductive paste is smeared at the place of being connected and fixed.Housing 9 is connected with supporting seat 2, and supporting seat 2 is fixed by mount pad 1 and telescopic hatch container upper end.Mount pad 1 is screwed the top at tank body, and conductive paste is smeared by bearing.
Static let-off gear(stand) 6 is provided with two-way static let-off gear(stand), static let-off gear(stand) 6 is to fix two copper axles at the static guiding ejecting plate, allow the multiple twisted wire 7 of wide copper pass two fixed copper axles, the static guiding ejecting plate is fixed on the housing 9, and then be electrically connected with tank body 12, the static charge on the float element can be passed to tank body 12 by the multiple twisted wire 7 of wide copper.
At supporting seat 2 latching device 3 is arranged, latching device 3 is dynamically connected with housing 9, and latching device 3 is for locking shell 9 when mounted, stops housing 9 automatic rotaries, makes the multiple twisted wire 7 of the wide copper that pulls out can automatic drawing back.
Housing 9 outsides are enclosed with rainproof cover 10, can prevent wind and weather by actv., and surrounding environment is to the erosion of the multiple twisted wire of wide copper.
As shown in Figure 3, fix respectively the multiple twisted wire 7 of wide copper and revolution wind spring 8 by A cavity and B cavity, the multiple twisted wire 7 of wide copper be connected wind spring 8 and be connected simultaneously with rotating shaft 5, multiple twisted wire 7 other ends of wide copper are connected with float element, thereby set up electrical connection path good between float element and the hatch container, no matter be rising or the decline of float element, under the effect of revolution wind spring 8, all can make multiple twisted wire 7 automatic deploying and retractings of wide copper and keep tension; When float element descends, the elongation that thereupon descends of the multiple twisted wire 7 of wide copper, and the B chamber that makes the A chamber that is wound with the multiple twisted wire 7 of wide copper and be wound with revolution wind spring 8 rotates around rotating shaft 5 synchronously, this turns round revolution wind spring 8 energy accumulations in wind spring B chamber; When float element rises, the multiple twisted wire 7 of wide copper rises thereupon, turn round wind spring 8 and release energy this moment, be wound with the A chamber of the multiple twisted wire 7 of wide copper and be wound with the B chamber of turning round wind spring 8 and roll recovery around rotating shaft 5 contrarotations and with the multiple twisted wire 7 of wide copper, all the time make the multiple length of twisted wire 7 from the hatch container to float element of wide copper the shortest, the static charge that float element 11 is collected discharges fast to the earth, connects the actv. lightning protection anti electrostatic thereby set up good equipotential.Avoid the generation of fire.
The present invention has an opposition owing to turning round wind spring 8 when mounted, if spur the multiple twisted wire of wide copper, revolution wind spring 8 has a screen resilience in order to tighten up the multiple twisted wire of wide copper.Fixedly the time, the wide copper of need to holding is answered twisted wire to the multiple twisted wire of wide copper with float element, not so wide copper answer twisted wire will automatic retraction A chamber.Latching device 3 is exactly to have played the effect that stops the multiple twisted wire automatic retraction of wide copper.The multiple twisted wire of wide copper is moved on the float element, pull the handle locking housing 9 of latching device, stop housing 9 to rotate, make the multiple twisted wire 7 of the wide copper that pulls out can automatic drawing back, after fixing the multiple twisted wire of wide copper, the handle of rotary locking device makes latching device 3 break away from housing 9, thereby housing 9 is rotated freely.
Static let-off gear(stand) 6 is provided with two-way static let-off gear(stand), and its effect is: 1) the multiple twisted wire 7 of wide copper is fixed on the housing 9, and housing 9 is fixed on the hatch container by mount pad 1, thereby makes the multiple twisted wire of wide copper and hatch container become a loop.2) the multiple twisted wire 7 of wide copper passes static let-off gear(stand) 6, and static let-off gear(stand) 6 is fixed on the housing 9, and housing 9 is fixed on the hatch container by mount pad 1, thereby makes the multiple twisted wire of wide copper and hatch container form another loop.Can better the static charge on the float element be passed to the hatch container by the multiple twisted wire 7 of wide copper, and then pass to the earth.This dual mode makes in the A chamber the multiple twisted wire line 7 of wide copper form one with the hatch container dynamically to be connected, to keep good equipotential connection.