CN203637745U

CN203637745U - Anti-static discharge structure for gasoline filter of automobile

Info

Publication number: CN203637745U
Application number: CN201320712582.7U
Authority: CN
Inventors: 刘新亮
Original assignee: Shanghai Volkswagen Automotive Co Ltd
Current assignee: SAIC Volkswagen Automotive Co Ltd
Priority date: 2013-11-12
Filing date: 2013-11-12
Publication date: 2014-06-11
Anticipated expiration: 2023-11-12

Abstract

The utility model provides an anti-static discharge structure for a gasoline filter of an automobile. The structure comprises a metallic conductor forming electric contact with the gasoline filter and the metallic automobile body of the automobile. By adopting the structure, the problem of a large amount of electrostatic charge generated by high-speed fierce friction between the fuel and conveying pipelines in the fuel conveying process is solved, a means for effectively preventing partial electrostatic discharge accumulation and large potential difference generation is provided, and the occurrence of spontaneous combustion of automobiles is avoided.

Description

Car gasoline filter anti-static discharge structure

Technical field

The utility model relates to a kind of car gasoline filter anti-static discharge structure.

Background technology

At present, when self-burning of vehicle accident, there is report, conventionally industry thinks that causing the major cause of self-burning of vehicle accident is electric leakage, and when engine operation, the temperature of high-tension coil is very high, make the insulating barrier of high-voltage ignition conductive wire softening, aging, rhegma, igniting high-tension current easily punctures insulating barrier, easily produces high-tension current electric leakage, causes electric leakage place temperature and constantly raises, ignite driving engine, carburettor etc. leak gasoline, cause ignition.But some do not exist electric leakage problem automobile that incidents of spontaneous combustion also can occur, for this kind of situation, industry does not also work out reason place wherein at present.

Utility model content

The purpose of this utility model is to provide a kind of car gasoline filter anti-static discharge structure, for another major reason of the automobile generation incidents of spontaneous combustion of finding, be that the violent fricative a large amount of static charges of high speed between fuel delivery process IFO intermediate fuel oil and transfer line are gathered in the problem on the metal device of transfer line, the means of taking effectively to prevent the accumulation of partial electrostatic lotus and forming large electric potential difference, avoid the generation of self-burning of vehicle accident.

For addressing the above problem, the utility model provides a kind of car gasoline filter anti-static discharge structure, comprises respectively and forms with gasoline intercepter and the metal body of automobile the metallic conductor electrically contacting.

Further, in said structure, described metallic conductor is metallic conduction band.

Further, in said structure, described metallic conductor is metallic conduction shell fragment.

Further, in said structure, described metallic conduction shell fragment is V-shape, wherein, the two ends of the metallic conduction shell fragment of V-shape and described gasoline intercepter form and electrically contact, and the middle part of V-shape metallic conduction shell fragment is connected and forms with described metal body by a shell fragment fix screw and electrically contacts.

Compared with prior art, the utility model is for another major reason of the automobile generation incidents of spontaneous combustion of finding, be that the violent fricative a large amount of static charges of high speed between fuel delivery process IFO intermediate fuel oil and transfer line are gathered in the problem on the metal device of transfer line, by forming with gasoline intercepter and the metal body of automobile the metallic conductor electrically contacting respectively, allow gasoline intercepter and metal body become equipotentiality body, can form the means that effectively prevent the accumulation of partial electrostatic lotus and form large electric potential difference, avoid the generation of self-burning of vehicle accident.

Accompanying drawing explanation

Fig. 1 is the car gasoline filter anti-static discharge structure figure of the employing metallic conduction band of the utility model one embodiment;

Fig. 2 is the car gasoline filter anti-static discharge structure figure of the employing metallic conduction shell fragment of the utility model one embodiment;

Wherein, 1-metal body, 2-fuel tank, 3-petrol feed pump, oil pipe before 4-fil, 5-fil fixing hoop, 6-gasoline intercepter, oil pipe after 7-fil, insulative water-proof protective layer at the bottom of 8-car, 9-driving engine, 10-metallic conduction band, 11-metallic conduction shell fragment, 12-shell fragment fix screw, 13-fil fixing hoop screw.

The specific embodiment

For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.

As shown in Figure 1, the utility model provides a kind of car gasoline filter anti-static discharge structure, comprises respectively and forms with gasoline intercepter 6 and the metal body 1 of automobile the metallic conductor electrically contacting.Concrete, at present automobile especially before the fil of manned vehicle after oil pipe 4, fil oil pipe 7 and fuel tank 2 generally adopt non-metallic material to make.Thereby vehicle rocks in exercising and causes the friction of fuel oil and fuel tank 2 to produce static charge, the violent friction of high speed between course of conveying IFO intermediate fuel oil and transfer line more can cause producing a large amount of static charges, and these static charges are attached on fuel molecule and in pipeline, flow together.When fuel delivery, above-mentioned static charge is very easily gathered on the metal device of transfer line as gasoline intercepter 6 etc.; If these metal devices are not electrically connected with metal body 1, do not form equipotentiality body, the static charge of a large amount of accumulation will cause occurring static discharge phenomenon between above-mentioned metal parts and vehicle body, forms jumper spark, and this is very unsafe for gasoline-fueled vehicle.Observe from the whole path of fuel delivery, open top in conveying, in fuel tank 2 designs, generally there are comparison effective measures to how to avoid static charge accumulation in use procedure and discharge, for example petrol feed pump 3 uses electric conductor to be connected with metal body 1, make fuel tank and metal body become equipotentiality body, thereby avoided electric charge local accumulation and electric discharge; At the end of fuel delivery, although driving engine 9 cylinder bodies and spraying nipple etc. are also metal pieces, and all there is good being electrically connected with metal body 1, but the static charge pouring in can cause the potential change of driving engine 9 cylinder bodies, to sensitive electrical devices, for example sensor signal causes interference, so be also necessary that the static charge to producing in fuel oil transmission path suppresses; But generally lack enough understanding for how effectively to control static charge accumulation in fuel delivery process and discharge in vehicle design at present.Although be in particular in the making of the local use metallic material of gasoline intercepter 6, do not realize good conductive with metal body 1 and contact, make gasoline intercepter 6 become on the contrary a potential static charge and discharge outlet; If there is a little seepage in the joint of fil two ends and pipeline, very easily lighted by electrostatic spark, form detonation, cause the car accident of burning.Cause gasoline intercepter 6 and metal body 1 cannot keep the reason of excellent electric contact to be: for preventing corrosion, the multiplex plastics clip 5 of gasoline intercepter 6 is fixed on below compartment, below compartment, also applied insulative water-proof protective layer 8 at the bottom of thick car, plastics clip 5 and insulative water-proof protective layer 8 make cannot form excellent electric contact between gasoline intercepter 6 and metal body 1 simultaneously.

There are three kinds of approach can make an entity accumulate static charge: to rub, induct and electric charge transfer.Two kinds of different material entities contacts or after friction, charge accumulated has reached balance.Then they are separated, the quantity of electric charge now retaining on single entity depends on the electric conductivity on material or surface.Surface electrical resistance is larger, just fewer by the electric charge of last contact point neutralization.In this, be τ=RC with the time constant of discharge process, wherein, R is resistance, and C is electric capacity, and very fast when the speed separating, so that its time t<< τ used, the electric charge neutralizing by last contact point just seldom.Formed two utmost points of electric capacity with two entities of the equivalent charges of different polarity, distance is larger, and electric capacity is less, and according to formula U=Q/C, the difference of potential between two entities is larger, and wherein, U is voltage, and Q is electric weight, and C is electric capacity.In some situation, if when difference of potential reaches air breakdown voltage EBD ≈ 30kV/cm, will there is disruptive spark electric discharge.The intuitivism apprehension of electrostatic discharge is exactly the neutralization of positive and negative charge and has at two the flow of charge producing between the carrier of electric potential difference thus.Fuel oil is flow at high speed in oil pipe, produces static charge inevitable, by avoiding charge accumulated and form large electric potential difference just can avoiding the generation of electrostatic discharge.In order to overcome the problem of static charge local accumulation on gasoline intercepter, the utility model by setting up static charge transfering channel with conductive strips or metallic conduction shell fragment between metal vapour oil rectifier and metal body, allow gasoline intercepter and vehicle body become equipotentiality body, vehicle body is shifted to storage pool as static charge, utilize the large surface of vehicle body metal to disperse to store static charge, avoid forming large electric potential difference, thereby avoid the generation of static discharge phenomenon.

Avoid the local accumulation of electric charge and form large electric potential difference, feasible method is electric charge is transferred on larger surface by rational path as early as possible or allow positive and negative charge neutralization.

As shown in Figure 1, described metallic conductor is conductive strips to an implementation.Utilize metallic conduction band 10 between positive and negative charge gathers a little, to set up the passage that electric charge shifts and neutralizes as electric conductor, between gasoline intercepter and vehicle body, set up a charge transferring channel.Avoid local accumulation on the one hand, can allow on the other hand positive and negative charge be neutralized.

As shown in Figure 2, described metallic conductor is metallic conduction shell fragment to another implementation.Preferably, metallic conduction shell fragment 11 is V-shape, wherein, the two ends of the metallic conduction shell fragment 11 of V-shape and described gasoline intercepter 6 forms and electrically contacts, and the middle part of V-shape metallic conduction shell fragment 11 is connected and forms with described metal body by a shell fragment fix screw 12 and electrically contacts.By increasing an elastic conduction shell fragment 11, form and electrically contact with the metal surface of gasoline intercepter 6, elastic conduction shell fragment is fixed on metal body 1 by metallic screw 12, forms like this flow passage of a static charge from gasoline intercepter to metal body.

To sum up, the present embodiment is for another major reason of the automobile generation incidents of spontaneous combustion of finding, be that the violent fricative a large amount of static charges of high speed between fuel delivery process IFO intermediate fuel oil and transfer line are gathered in the problem on the metal device of transfer line, using gasoline intercepter as pipeline static charge catcher, the transfer storage pool of institute's accumulate static charge using metal body as gasoline intercepter, between gasoline intercepter and vehicle body, set up static charge transfering channel with metallic conductor, form and effectively prevent the accumulation of partial electrostatic lotus and form large electric potential difference, avoid the generation of self-burning of vehicle accident.

In this specification sheets, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.For the disclosed system of embodiment, owing to corresponding to the method disclosed in Example, so description is fairly simple, relevant part illustrates referring to method part.

Obviously, those skilled in the art can carry out various changes and modification and not depart from spirit and scope of the present utility model utility model.Like this, if within of the present utility model these are revised and modification belongs to the scope of the utility model claim and equivalent technologies thereof, the utility model is also intended to including these changes and modification.

Claims

1. a car gasoline filter anti-static discharge structure, is characterized in that, comprises respectively and forms with gasoline intercepter and the metal body of automobile the metallic conductor electrically contacting.

2. car gasoline filter anti-static discharge structure as claimed in claim 1, is characterized in that, described metallic conductor is metallic conduction band.

3. car gasoline filter anti-static discharge structure as claimed in claim 1, is characterized in that, described metallic conductor is metallic conduction shell fragment.

4. car gasoline filter anti-static discharge structure as claimed in claim 3, it is characterized in that, described metallic conduction shell fragment is V-shape, wherein, the two ends of the metallic conduction shell fragment of V-shape and described gasoline intercepter form and electrically contact, and the middle part of V-shape metallic conduction shell fragment is connected and forms with described metal body by a shell fragment fix screw and electrically contacts.