CN202597808U

CN202597808U - Charging valve

Info

Publication number: CN202597808U
Application number: CN2012202246125U
Authority: CN
Inventors: 张海平
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-18
Filing date: 2012-05-18
Publication date: 2012-12-12
Anticipated expiration: 2022-05-18

Abstract

The utility model discloses a charging valve, comprising a shell, wherein the shell is internally provided with a cavity, the shell is provided with a first pipe joint and a second pipe joint which are connected with a gas holder and a gas supply pipeline of an engine, the cavity is communicated with lumens of the first pipe joint and the second pipe joint, the cavity is internally provided with a check valve, an exhaust end of the check valve is arranged in the cavity, and a gas inlet end of the check valve is connected with a charging channel arranged on the shell. After the structure is adopted, when a charging gun head charges gas into the gas holder by virtue of the charging valve, the charging channel is internally provided with the check valve, fuel gas only can flow uniaxially in the charging channel, the fuel gas can be supplemented into the gas holder only requiring that a pressure gas source in the charging gun conducts the check valve during charging, and after charging is completed, the charging gun is taken down, thus the whole operation is simple, convenient and rapid.

Description

A kind of gas charging valve

Technical field

The utility model relates to vehicle air supply system field, is specifically related to a kind of gas charging valve that is used for vehicle postcombustion gas.

Background technique

Vehicle-mounted natural gas supply system comprises gas holder, and gas holder is that motor provides fuel gas through delivery line, and conveyance conduit is provided with gas charging valve, thinks gas holder postcombustion gas.Traditional gas charging valve is as shown in Figure 1, is a stop valve, comprises the air supply channel of offering in the valve body that is used to connect gas holder outlet conduit and engine charge pipeline; The side of air supply channel is provided with gas fill port, and gas fill port is connected with air supply channel, and both connections place are provided with the plug that gas fill port is stopped up; Unscrew plug through spanner during inflation; Charger just can be to postcombustion gas in the gas holder, restart completion after, the plug of screwing gets final product.This charging valve, though can realize replenishing of fuel gas, all need be during each charge operation to the plug operation that unscrews and screw, its whole operation process is loaded down with trivial details, its complicated operation, and plug long-term with the wearing and tearing of gas tube road junction after, easy gas leakage.

Summary of the invention

The purpose of the utility model provides a kind of charging valve, and the motor vehicle fuel gas inflated is simple to operate, quick and convenient.

For realizing above-mentioned purpose, the utility model has adopted following technological scheme: a kind of gas charging valve is characterized in that: comprise housing; Be provided with cavity in the housing; First and second pipe joint that setting is connected with the supply air line of gas holder and motor on the housing, said cavity is communicated with the tube chamber of first and second pipe joint, in the said cavity one-way valve is set; The exhaust end of one-way valve is positioned at cavity, and the air inlet end of one-way valve is connected with the gas fill port that housing is offered.

The beneficial effect of the utility model is: after adopting said structure, when the charge gun head is inflated in gas holder through gas charging valve, owing to be provided with one-way valve in the gas fill port; Fuel gas can only be in gas fill port one-way flow; Only need during inflation pressure gas source conducting one-way valve in the charge gun just can be in gas holder postcombustion gas, after the inflated, take off charge gun and get final product; Whole operation is simple, and is fast convenient.

Description of drawings

Fig. 1 is the prior art constructions schematic representation;

The structural representation of Fig. 2 the utility model;

Fig. 3 is the structural representation of one-way valve.

Embodiment

The purpose of the utility model provide a kind of can be fast to vehicle postcombustion gas, and gas charging valve fast simple to operate, its scheme of taking does; As shown in Figure 1, a kind of gas charging valve comprises housing 10; Be provided with cavity 10 ' in the housing 10; First and

second pipe joint

11,12 that setting is connected with the supply air line of gas holder and motor on the housing 10, said cavity 10 ' is communicated with the tube chamber of first and

second pipe joint

11,12, and one-way valve 20 is set in the said cavity 10 '; The exhaust end of one-way valve 20 is positioned at cavity 10 ', and the air inlet end of one-way valve 20 is connected with the gas fill port 13 that housing 10 is offered.During practical operation,, make one-way valve 20 be in unidirectional on state because fuel gas source has the certain pressure effect; Assurance is inflated in gas holder, and inflation is cancelled fuel gas source after finishing; One-way valve 20 recovers initial reverse blocking state, guarantees that fuel gas does not leak.Thereby make that the complement operation of fuel gas is simple more, convenient.

Concrete is operating as; Described housing 10 totally is one " ten " font; Also be provided with the fixed hole 15 that is used for fixing the charge gun head on it; Described fixed hole 15 is connected with gas fill port 13, and the pipe range direction of said first and

second pipe joint

11,12 is consistent, and said fixed hole 15 is vertical with the pipe range direction of first and second pipe joint 11,12.The two ends that said first and

second pipe joint

11,12 is a body 10a constitute; The through hole of offering on the sidewall of said body 10a middle part constitutes described gas fill port 13; Said one-way valve 20 is fixed in the through hole; The side of said body 10a also is provided with the connecting tube 14 that is connected with its connection; The tube chamber of said body 10a and connecting tube 14 constitutes cavity 10 ', and said connecting tube 14 outer ends are provided with the end cap 30 that is sealed and matched with it, are provided with the obstruction unit that one-way valve 20 exhaust ends are stopped up in the said cavity 10 '.Can realize quickly and easily gas holder being carried out charge operation through such scheme.

Because gas charging valve is after long-term the use, the impaired of part possibly appear in one-way valve 20, and causes gas leakage; Vehicle is in case leak gas; Untimely takes measures, and will cause serious accident, so the novel further scheme of this reality does; Described obstruction unit comprises the plug with the corresponding layout of one-way valve 20 exhaust ends, and described end cap 30 is provided with regulates the controlling mechanism that plug moves relative to one-way valve 20 exhaust ends.Through exhaust end a plug is set at one-way valve 20; When finding gas leakage again, use controlling mechanism to regulate the exhaust end obstruction of plug, thereby prevent gas leakage one-way valve 20; Guarantee the normal operation of vehicle; After treating that the interior fuel gas of gas holder uses up, with changing one-way valve 20, prevent to cause unnecessary accident again because of the damage of gas charging valve.

More concrete is operating as; Like Fig. 2, shown in 3; Said body 10a madial wall is provided with boss 17 in cavity 10 '; The internal diameter of the diameter of said boss 17 and connecting tube 14 matches, and the exhaust end of described one-way valve 20 passes boss 17 middle parts and extends in the connecting tube 14, and described connecting tube 14 is connected with first and

second pipe joint

11,12 through the attachment hole of offering on the boss 17.Because the aperture, inside of the body 10a of formation gas charging valve body is less; And the length of one-way valve 20 is bigger with its diameter; Therefore extend in cavity 10 ' at body 10a and be provided with boss 17; Be used for the influence that is provided with of fixing and avoid one-way valve 20, guarantee the normal air feed of body 10a first and

second pipe joint

11,12 conductions to one-way valve 20.Boss 17 is connected as a single entity with connecting tube 14 during practical implementation, and the through hole of offering on through hole that the middle part of boss 17 is offered and the body 10a sidewall constitutes the fixedly step-like fixed hole of one-way valve 20.

Because the pressure of the fuel gas in steam line 11 is very big; The inner sealability of therefore whole gas charging valve seems particularly important; Therefore the further scheme of the utility model is: described plug comprises the sprue 31 and the fixing shackle member 32 of sprue 31; Described shackle member 32 is provided with first Sealing 301 with the end cap 30 madial wall places of fitting; Described controlling mechanism is one to constitute threaded stem 33 formations that bolt and nuts cooperate with end cap 30, and flat segments is arranged at the middle part of said threaded stem 33, and the through hole inner circle wall that said end cap 30 middle parts are offered is provided with second Sealing 302 that matches with flat segments; The threaded stem 33 that constitutes controlling mechanism is structure as a whole with shackle member 32, and described threaded stem 33 overlaps with the shaft core direction of one-way valve 20.Said valve body 21 profiles totally are a step axle shape, and said body 10a and valve body 21 periphery table tops 21 ' cooperation place are provided with the 3rd Sealing 16.In normal operation; Shackle member 32 fits with the interior edge face of end cap 30; Just can form the top seal of the gas charging valve under the normal working at first Sealing 301 that is provided with connecting tube 14 outer ends and shackle member 32 corresponding positions on the end cap 30, body 10a goes up the lower seal with the 3rd Sealing 16 formation gas charging valves of valve body 21 periphery table top places setting simultaneously.After one-way valve 20 damages, shackle member 32 and sprue 21 downward modulations, 20 outlets are stopped up to one-way valve, and 302 pairs of gas charging valve tops of second Sealing this moment seal, and guarantee the Security that fuel gas is carried.

More concrete; As shown in Figure 3; Described one-way valve 20 comprise with body 10a on the through hole the offered valve body 21 that matches and be connected; The vestibule diameter that said valve body 21 inside offer step-like vestibule and one-way valve 20 exhaust ends is bigger, and the big section of said valve body 21 interior bore diameters is provided with tapered spool 22 and tapered spool 22 tapered and is positioned near one-way valve 20 air inlet ends, and the said one-way valve 20 exhaust end places that are positioned at are provided with the valve gap 23 that matches with valve body 21; Described valve gap 23 middle parts offer air outlet hole, between described tapered spool 22 and the valve gap 23 spring 24 are set.In a word, the charge operation of the utility model when vehicle is inflated is simple, quick and convenient.

Claims

1. gas charging valve; It is characterized in that: comprise housing (10); Housing is provided with cavity (10 ') in (10); Housing (10) is gone up first and second pipe joint (11,12) that setting is connected with the supply air line of gas holder and motor, and said cavity (10 ') is communicated with the tube chamber of first and second pipe joint (11,12), and one-way valve (20) is set in the said cavity (10 '); The exhaust end of one-way valve (20) is positioned at cavity (10 '), and the air inlet end of one-way valve (20) is connected with the gas fill port (13) that housing (10) is offered.

2. gas charging valve as claimed in claim 1; It is characterized in that: said first and second pipe joint (11,12) is that the two ends of a body (10a) constitute; The through hole of offering on the sidewall of said body (10a) middle part constitutes described gas fill port (13); Said one-way valve (20) is fixed in the through hole; The side of said body (10a) also is provided with the connecting tube (14) that is connected with its connection; The tube chamber of said body (10a) and connecting tube (14) constitutes cavity (10 '), and said connecting tube (14) outer end is provided with the end cap (30) that is sealed and matched with it, is provided with the obstruction unit that one-way valve (20) exhaust end is stopped up in the said cavity (10 ').

3. gas charging valve as claimed in claim 2; It is characterized in that: described obstruction unit comprises the plug with the corresponding layout of one-way valve (20) exhaust end, and described end cap (30) is provided with regulates the controlling mechanism that plug moves relative to one-way valve (20) exhaust end.

4. gas charging valve as claimed in claim 2; It is characterized in that: described one-way valve (20) comprise with body (10a) on the through hole the offered valve body (21) that matches and be connected; The vestibule diameter that said valve body (21) inside offers step-like vestibule and one-way valve (20) exhaust end is bigger; The big section of said valve body (21) interior bore diameter is provided with tapered spool (22) and tapered spool (22) tapered and is positioned near one-way valve (20) air inlet end; Said one-way valve (20) the exhaust end place that is positioned at is provided with the valve gap (23) that matches with valve body (21); Described valve gap (23) middle part offers air outlet hole, between described tapered spool (22) and the valve gap (23) spring (24) is set.

5. gas charging valve as claimed in claim 3; It is characterized in that: described plug comprises the sprue (31) and the fixing shackle member (32) of sprue (31); Described shackle member (32) is provided with first Sealing (301) with end cap (30) the madial wall place of fitting; Described controlling mechanism is one to constitute threaded stem (33) formation that bolt and nut cooperates with end cap (30); Flat segments is arranged at the middle part of said threaded stem (33); The through hole inner circle wall that said end cap (30) middle part is offered is provided with second Sealing (302) that matches with flat segments, and the threaded stem (33) that constitutes controlling mechanism is structure as a whole with shackle member (32), and described threaded stem (33) overlaps with the shaft core direction of one-way valve (20).

6. gas charging valve as claimed in claim 4 is characterized in that: said valve body (21) profile totally is a step axle shape, and said body (10a) is provided with the 3rd Sealing (16) with valve body (21) periphery table tops (21 ') cooperation place.

7. gas charging valve as claimed in claim 1; It is characterized in that: described housing (10) totally is one " ten " font; Also be provided with the fixed hole (15) that is used for fixing the charge gun head on it; Described fixed hole (15) is connected with gas fill port (13), and the pipe range direction of said first and second pipe joint (11,12) is consistent, and said fixed hole (15) is vertical with the pipe range direction of first and second pipe joint (11,12).