CN202381782U - Liquefied petroleum gas (LPG) pressure reducing valve for vehicle - Google Patents
Liquefied petroleum gas (LPG) pressure reducing valve for vehicle Download PDFInfo
- Publication number
- CN202381782U CN202381782U CN2011205760239U CN201120576023U CN202381782U CN 202381782 U CN202381782 U CN 202381782U CN 2011205760239 U CN2011205760239 U CN 2011205760239U CN 201120576023 U CN201120576023 U CN 201120576023U CN 202381782 U CN202381782 U CN 202381782U
- Authority
- CN
- China
- Prior art keywords
- valve seat
- valve
- shell
- tubular body
- central
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Safety Valves (AREA)
Abstract
The utility model discloses a liquefied petroleum gas (LPG) pressure reducing valve for a vehicle, relating to a valve structure. A valve seat of a runner valve is a central connected extending body of a middle shell; a connecting part between the middle of the valve seat and the middle shell is a ring disc; the lower part of the ring disc is a tubular body; a lower lug boss is arranged at the lower end face of an inner cavity of the tubular body in a connected extending manner; a conical body on the upper part of the ring disc is provided with a plurality of inclined holes for communicating a ring disc central hole with a springback cavity; and the inner wall of the tubular body on the lower part of the ring disc is provided with a plurality of longitudinal grooves; a valve element is of a stepped shaft shape; a compression spring supporting against a lower shell is sleeved in a central blind hole on the lower shaft body of the stepped shaft; and the lower shaft body of the stepped shaft is sleeved in the inner circle of the tubular body of the valve seat in a movable fit manner; and a rubber ring is sleeved on a shaft shoulder in the middle of the stepped shaft, the upper end face of the rubber ring and the lower end face of the lower lug boss of the valve seat are contacted in a elastic jointed manner, and after the upper shaft body of the stepped shaft penetrates through the ring disc central hole of the valve seat and the central hole of the conical body on the upper part of the valve seat, the upper end face of the upper shaft body of the stepped shaft is elastically jointed with the lower surface of a top film bolt in a supporting manner. According to the utility model, due to a connected member, a seal ring is omitted and the phenomena of ageing, air leakage and misalignment due to poor sealing are avoided.
Description
Technical field
The utility model relates to valve mechanism, particularly a kind of liquefied petroleum gas for car reduction valve.
Background technique
Because the China's oil reserves are limited,, be the direction of Economic Development so develop, develop new-energy automobile again for environmental requirement.Substitute in the fuel automobile process at exploitation gasoline replacing, diesel oil etc., the most real countermeasure is no more than exploitation liquefied petroleum gas LPG automobile.Various performance tests show that with long-term use experience LPG is a kind of very desirable automotive fuel, and its lower calorific value is 44ML/KG, and are slightly higher than gasoline, far above gaseous fuel; The theoretic mixture ratio of various component perfect combustions is between 14.8-15.7; The octane value of various components (motor method) is between 81.0-99.5, if fiery temperature is higher than gasoline; Critical temperature high (404.8K), and critical pressure low (3.75MPA); Normal temperature be cooled under pressurization or the normal pressure down suitably not too low temperature for ease of storing and the liquid of transportation.Automobile uses LPG and can rationally utilize the LPG source of the gas to open up new approach for the application of gaseous fuel.
LPG liquid must be implemented gasification and decompression before getting into cylinder in reduction valve.The current decompression valve arrangement is made up of upper shell, middle shell, lower shell body, flexible sheet, liquid entering hole, air outlet, intake-outlet and runner valve.Upper shell and middle shell with the flexible sheet clamp in the centre; Compression spring was clamped on the flexible sheet upper and lower end face about a teleblem bolt passed flexible sheet central hole general; The regulator bolts at upper shell top is oppressed a pressure spring on the upper spring pad of flexible sheet upper-end surface through a step cover, makes and forms the pressure regulating cavity of isolating between upper shell and flexible sheet; Pressure spring is installed between middle shell top imperial palace annulus and the flexible sheet forms a resilience chamber, middle shell top imperial palace annulus is provided with the runner hole, and and the cylindrical wall between form a gas backstreaming chamber, refluxing chamber is provided with the air outlet; After middle shell and lower casing consideration platform are fixing, form a circulation water cavity between annulus outer wall and the cylindrical wall in the middle shell bottom is little, with the lower flow channel chamber, the lower shell body intake-outlet is communicated with the circulation water cavity, and the suction port of lower shell body is communicated with lower flow channel chamber, middle shell bottom.
The runner valve is made up of valve seat, spool, valve rod.The circle ring disk bottom disjunctor that valve seat top the has some radial holes tubular body that extends, and be fixed on the internal thread of annulus in the middle shell middle part after with a seal ring pressing through the tubular body upper external thread.Spool is a step axle shape; Step axle upper cylinder is enclosed within the interior circle of valve seat tubular body movingly; And the cylindrical body cylindrical is provided with some roads gap slot, and step axle bottom withstands on the lower shell body through a pressure spring, is sheathed with a rubber ring in the round recessed that step axle top is provided with.Valve rod is two-way step axle shape; The stem lower portion axostylus axostyle is linked in the spool central blind hole after passing the rubber ring central hole; Valve rod top axis body withstands on the teleblem bolt of flexible sheet after passing valve seat top circle ring disk central hole, and valve rod middle part axis body is in the step hole of valve seat middle and lower part and with the step hole cylindrical and maintains the gap.
When refluxing chamber air pressure hour; Transmit the resilience chamber that low pressure is given top through the runner hole on the middle shell; Then the pressure regulating cavity spring pressed down through valve rod spool was pushed up downwards this moment; Rubber ring on the spool and valve seat circle ring disk lower convex platform disengage, and the LPG flow then gets into refluxing chamber by liquid entering hole, lower flow channel chamber, spool cylindrical gap slot, valve rod middle part axis body and step hole gap, valve seat middle and lower part, valve seat radial hole, resilience chamber, middle shell runner hole and flowed out by the air outlet by circulation water cavity indirect heat exchange, gasification back.Otherwise, push up on flexible sheet when big when getting into refluxing chamber air pressure, close the runner valve.
The defective of this structure is: copper valve seat cost is high, and will process separately.There is very big corrosivity in the seal ring of valve seat pressing because of LPG liquid, requires very high to the seal ring material.Can leak gas behind the ageing of rubber simultaneously, influence pressure distribution and change, it is accurate to cause reduction valve to lose.
Summary of the invention
The purpose of the utility model is to overcome above-mentioned defective, and a kind of liquefied petroleum gas for car reduction valve is provided.
The scheme of the utility model is: structure of relief pressure valve is made up of upper shell, middle shell, lower shell body, flexible sheet, liquid entering hole, air outlet, intake-outlet and runner valve; It is characterized in that: the valve seat of runner valve is middle shell central authorities disjunctor extension bodies; The valve seat middle part is a circle ring disk with middle shell disjunctor position; The circle ring disk bottom is a tubular body, and it is the cone that has central hole that the circle ring disk lower end surface disjunctor extension of said tubular body inner chamber has lower convex platform, circle ring disk top; Cone is provided with the inclined hole that several circle ring disk central holes are communicated with the resilience chamber, and circle ring disk lower tubular body inwall is provided with some longitudinal flutings; Spool is a step axle shape, is sheathed with pressure spring in the axis body central blind hole under the step axle, and this pressure spring lower end surface withstands on the protruding step cylinder of lower shell body upper surface, and axis body is enclosed within the interior circle of valve seat tubular body movingly under the step axle; Be sheathed with rubber ring on the shaft shoulder of step axle middle part; The rubber ring upper-end surface is the elasticity applying with the lower end surface of valve seat lower convex platform and contacts; The rubber ring cylindrical is less than the external circle of step axle lower shaft; After axis body passed valve seat circle ring disk central hole space and passes valve seat upper cone body central hole movingly on the step axle, its upper-end surface elastic top was attached on the teleblem bolt lower surface of flexible sheet.
The advantage of the utility model is: valve seat and middle shell are siamese part, and work simplification and cost reduce, and have save this place's seal ring simultaneously, have avoided poorly sealed, aging gas leakage to lose accurate phenomenon.
Description of drawings
Fig. 1 is the existing technology structural representation.
Fig. 2 is the utility model structural representation.
Embodiment
The utility model structure of relief pressure valve is made up of upper shell 7, middle shell 4, lower shell body, flexible sheet 6, liquid entering hole 2, air outlet 3, intake-outlet 12 and runner valve; It is characterized in that: the valve seat 9 of runner valve is middle shell 4 central disjunctor extension bodies; Valve seat 9 middle parts and middle shell 4 disjunctor positions are circle ring disk; The circle ring disk bottom is a tubular body, and it is the cone that has central hole that the circle ring disk lower end surface disjunctor extension of said tubular body inner chamber has lower convex platform, circle ring disk top; Cone is provided with the inclined hole that several circle ring disk central holes are communicated with the resilience chamber, and circle ring disk lower tubular body inwall is provided with some longitudinal flutings 11; Spool 8 is a step axle shape, is sheathed with pressure spring in the axis body central blind hole under the step axle, and this pressure spring lower end surface withstands on the protruding step cylinder of lower shell body upper surface, and axis body is enclosed within the interior circle of valve seat 9 tubular bodies movingly under the step axle; Be sheathed with rubber ring 10 on the shaft shoulder of step axle middle part; Rubber ring 10 upper-end surfaces are the elasticity applying with the lower end surface of valve seat 9 lower convex platforms and contact; Rubber ring 10 cylindricals are less than the external circle of step axle lower shaft; After axis body passed valve seat 9 circle ring disk central hole spaces and passes valve seat 9 upper cone body central holes movingly on the step axle, its upper-end surface elastic top was attached on the teleblem bolt lower surface of flexible sheet 6.
In runner when circulation,, LPG liquid gets into refluxing chamber 5 by several inclined holes, resilience chamber, middle shell 4 runner holes on axis body gap, the valve seat 9 on gap, valve seat 9 circle ring disk central holes and the spool 8 between liquid entering hole 2, lower flow channel chamber 13, valve seat 9 tubular body longitudinal flutings 11, rubber ring 10 and valve seat 9 lower convex platforms and receives after circulation water cavity 1 indirect heat exchange, the gasification by air outlet 3 outflows.
Valve rod and the spool 8 integrated manufacture simplification that also make.
Claims (1)
1. liquefied petroleum gas for car reduction valve; Form by upper shell (7), middle shell (4), lower shell body, flexible sheet (6), liquid entering hole (2), air outlet (3), intake-outlet (1) (2) and runner valve; It is characterized in that: the valve seat of runner valve (9) is the central disjunctor extension of middle shell (a 4) body; Valve seat (9) middle part is a circle ring disk with middle shell (4) disjunctor position; The circle ring disk bottom is a tubular body, and it is the cone that has central hole that the circle ring disk lower end surface disjunctor extension of said tubular body inner chamber has lower convex platform, circle ring disk top; Cone is provided with the inclined hole that several circle ring disk central holes are communicated with the resilience chamber, and circle ring disk lower tubular body inwall is provided with some longitudinal flutings (11); Spool (8) is a step axle shape, is sheathed with pressure spring in the axis body central blind hole under the step axle, and this pressure spring lower end surface withstands on the protruding step cylinder of lower shell body upper surface, and axis body is enclosed within the interior circle of valve seat (9) tubular body movingly under the step axle; Be sheathed with rubber ring (10) on the shaft shoulder of step axle middle part; Rubber ring (10) upper-end surface is the elasticity applying with the lower end surface of valve seat (9) lower convex platform and contacts; Rubber ring (10) cylindrical is less than the external circle of step axle lower shaft; After axis body passed valve seat (9) circle ring disk central hole space and passes valve seat (9) upper cone body central hole movingly on the step axle, its upper-end surface elastic top was attached on the teleblem bolt lower surface of flexible sheet (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205760239U CN202381782U (en) | 2011-12-26 | 2011-12-26 | Liquefied petroleum gas (LPG) pressure reducing valve for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205760239U CN202381782U (en) | 2011-12-26 | 2011-12-26 | Liquefied petroleum gas (LPG) pressure reducing valve for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202381782U true CN202381782U (en) | 2012-08-15 |
Family
ID=46630285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205760239U Withdrawn - After Issue CN202381782U (en) | 2011-12-26 | 2011-12-26 | Liquefied petroleum gas (LPG) pressure reducing valve for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202381782U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494169A (en) * | 2011-12-26 | 2012-06-13 | 福建华龙化油器有限公司 | Pressure reducing valve for vehicular petroleum liquefied gas |
-
2011
- 2011-12-26 CN CN2011205760239U patent/CN202381782U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494169A (en) * | 2011-12-26 | 2012-06-13 | 福建华龙化油器有限公司 | Pressure reducing valve for vehicular petroleum liquefied gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2071252C (en) | Natural gas cylinder fitting and solenoid valve | |
| CN112178209B (en) | Bellows type ultra-low temperature pneumatic stop valve | |
| CN202381782U (en) | Liquefied petroleum gas (LPG) pressure reducing valve for vehicle | |
| CN102494169B (en) | Pressure reducing valve for vehicular petroleum liquefied gas | |
| CN100520131C (en) | Micro-flow regulating valve | |
| CN105927741A (en) | Pressure reducing valve for high-pressure gas | |
| CN209213106U (en) | A kind of pressure reducer that output performance is stable | |
| CN201170340Y (en) | Non-leakage flat gate valve | |
| CN203809814U (en) | Channel valve and lower shell sealing device used for vehicle liquefied gas pressure reducing valve | |
| CN203529917U (en) | Self-sealed fuelling nozzle having oil vapor recovery and pressure relief functions | |
| CN203686209U (en) | High-pressure balance type forged switching ball valve with self sealing of fillers | |
| CN206708472U (en) | A kind of high pressure hydrogen pressure-reducing valve | |
| CN2913643Y (en) | High-pressure reducing regulator for compressed natural gas | |
| CN202432041U (en) | Liquid feeding runner of vehicular liquefied gas pressure reducing valve | |
| CN202441986U (en) | Top film touch structure of automobile liquefying gas pressure reducing valve | |
| CN206503980U (en) | A kind of vehicle fuel pressure regulator valve | |
| CN103899816B (en) | The runner valve of a kind of motor liquified gas air relief valve and the sealing device of lower house | |
| CN201786509U (en) | Fuel filter integrated with pressure regulating valve | |
| CN209909249U (en) | Low-temperature axial flow type check valve | |
| CN202381766U (en) | Automotive liquefied petroleum gas (LPG) electric control relief valve | |
| CN210372397U (en) | Air supply sealing device for vehicle | |
| CN205118266U (en) | Seal structure of solenoid valve | |
| CN201992105U (en) | Welding type sandwich valve | |
| CN201764040U (en) | Stop check valve | |
| CN201715021U (en) | Liner-type stop valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120815 Effective date of abandoning: 20130522 |
|
| RGAV | Abandon patent right to avoid regrant |