CN203809748U - Membrane ejecting rod and elastic membrane sliding device of vehicle natural gas pressure reducing valve - Google Patents
Membrane ejecting rod and elastic membrane sliding device of vehicle natural gas pressure reducing valve Download PDFInfo
- Publication number
- CN203809748U CN203809748U CN201420181726.5U CN201420181726U CN203809748U CN 203809748 U CN203809748 U CN 203809748U CN 201420181726 U CN201420181726 U CN 201420181726U CN 203809748 U CN203809748 U CN 203809748U
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- China
- Prior art keywords
- membrane
- ejecting rod
- elastic membrane
- flexible sheet
- sliding device
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Abstract
A membrane ejecting rod and elastic membrane sliding device of a natural gas pressure reducing valve used for a vehicle comprises a membrane ejecting rod, an upper elastic membrane, an upper spring gasket and a lower spring gasket, and further comprises an isolation circular ring disc. The membrane ejecting rod and elastic membrane sliding device is characterized in that the height of the upper step end face of a circular shaft on the upper portion of the middle section of the membrane ejecting rod is decreased, and the height decreasing amount meets the following conditions that when the pressure reducing valve does not work, the upper elastic membrane is in a full flat state, the upper surface of the isolation circular ring disc is in a circular groove shape, the lower surface of the isolation circular ring disc is in a downward-protruding boss shape, and the inner diameter of the circular groove in the upper surface of the isolation circular ring disc is larger than the outer diameter of a central circular boss of the lower spring gasket. The membrane ejecting rod and elastic membrane sliding device has the advantage that the upper elastic membrane is flat in the initial state and has no pre-tension. Meanwhile, by taking the flat state as the reference, the vertical amplitude is uniform, the high amplitude and the large tension do not exist, and the service life is prolonged.
Description
Technical field:
The utility model relates to valve mechanism, particularly a kind of teleblem bar of natural gas pressure release valve for vehicle, flexible sheet slide device.
Background technique:
CNG (compressed natural gas) so expects as a kind of gas, mixes more evenly with air, burns more abundant, and the harmful matter such as CO, HC of discharge still less; After combustion of natural gas, there is no carbon deposit, can reduce engine scuffing, maintaining expense is low; Natural gas engine repacking is simple, particularly uses the duel fuel engine of gasoline engine refitting, high because of cost performance, uses extensively; Therefore new-energy automobile uses compressed natural gas CNG to be applicable to current environmental requirement as fuel at present.
The rock gas CNG gas of steel cylinder compression 20MPa must be implemented decompression before entering Motor Engine Cylinder burning in reduction valve.Current decompression valve arrangement is made up of upper shell, middle shell, lower shell body, flexible sheet, teleblem structure, buffer air chamber, suction port, air outlet, water temperature heat conduction structure and runner valve.Upper shell and middle shell by upper flexible sheet clamp in centre, a teleblem bar top screw column is clamped to upper and lower compression spring on upper flexible sheet upper and lower end face through upper flexible sheet central hole, the regulator bolts at upper shell top is oppressed a Compress Spring on the upper spring pad of upper flexible sheet upper-end surface by a step cover, the pressure regulating cavity that makes to form between upper shell and flexible sheet isolation, upper shell is also provided with the negative tube being communicated with cylinder.Middle shell inner circle middle part is a circle ring disk of disjunctor extension inwardly, and in circle ring disk, along a upwards protruding cap shape lid of disjunctor extension of upper surface, taking circle ring disk as boundary, its underpart forms secondary air cavity, teleblem bar middle part Spielpassung is through cap shape lid central hole, in upwards disjunctor three the uniform vertical vertical rib plate that extend of the cap shape lid upper surface of cap shape lid central hole periphery, three vertical vertical rib plate inner side surfaces axially slide orbit determination with moving cooperation to teleblem bar of teleblem bar cylindrical, on the shaft shoulder of teleblem bar bottom, be sheathed with rubber ring, the moving engage sleeves in teleblem bar underpart is in bottom central hole, bottom cylindrical and the sealing of circle ring disk lower surface central stepped bore are fixing, when teleblem bar slides up and down, gap on its shaft shoulder between rubber ring and cap shape lid central hole lower surface is air current flow passage, air-flow enters step path axle cylindrical and the cap shape lid central hole gap that teleblem bar middle part arranges thus, thereby enter secondary air cavity, import engine cylinder by the air outlet arranging on secondary air cavity wall again.
On cap shape covered body wall, be provided with the inter-stage runner hole of Three way type, an aperture is communicated with one-level air cavity down, an aperture is communicated with cap shape lid inner chamber towards right, the 3rd aperture tubular body by disjunctor is on middle shell outer wall, a solenoid valve is as runner valve, and the shoulder of implementing to be communicated with between Ling Liangge aperture, inter-stage runner hole in the tubular body in its 3rd aperture of valve rod insertion closes, aperture control.On the wall body of the residing middle shell of secondary air cavity, being provided with all separate spaces of ring implements to heat up to secondary air cavity as water temperature heat conduction structure.In middle shell one-level air cavity, be provided with suction port, L shaped lever plate, suction port piston nose face is fixed a steel ball, and steel ball top is attached on the end face of the longitudinal plate of L shaped lever plate.In lower shell body, lay Compress Spring, lower shell body and middle shell by a lower flexible sheet clamp in centre, a bolt screws up in lever cylinder lower surface tapped hole through bottom spring pad central hole, lower flexible sheet central hole, and the opening slot on lever cylinder top and L shaped lever plate transverse plate are implemented hinged.In the time that one-level air cavity air pressure is too large, lower flexible sheet presses down Compress Spring by bottom spring pad, thereby lever cylinder swings the L shaped lever plate inhour of drive deflection compressing steel ball left, suction port piston dwindles until close induction port aperture to right translation.Guarantee in one-level chamber, to there is constant air pressure, when hour reverse operating of air pressure.
Suddenly while acceleration due to automobile, requiring air demand burst to strengthen, there is retardation phenomenon in uprushing of secondary air cavity air demand, and therefore high-grade reduction valve has additional buffer air chamber structure.Buffer air chamber structure is that middle shell upper-end surface inner circle arranges a ring-shaped step groove, the fixing riveted of isolation circle ring disk cylindrical of an opening up cup-shaped is on ring-shaped step groove inner round wall, isolation circle ring disk height is less than ring-shaped step groove deep and is convenient to riveted, isolation circle ring disk upper face center is provided with central circular bosses, and possess spacing formation air chamber with flexible sheet, lower spring pad, teleblem bar elastic packing coordinates through the fixing rubber seal of isolation circle ring disk central hole fit; Buffer air chamber flow passage structure is also L shaped hole pipe of disjunctor extension of isolation circle ring disk lower surface, the mouth of pipe of L shaped hole pipe transverse pipe faces the air outlet inner orifice of middle shell, and possess spacing with inner orifice, so that secondary air cavity air-flow enters air outlet inner orifice while normally giving vent to anger, L shaped hole pipe transverse pipe air-flow can spread in pitch space after giving vent to anger.Another kind of buffer air chamber flow passage structure is to establish runner mouth on middle shell ring-shaped step cell wall, in middle shell, establish runner hole and be communicated with inwall aperture, air outlet, runner gas flow hole vertically enter air outlet vertical with air outlet air-flow converge to exist cross resistance and there is no forward momentum.
Teleblem bar, upper flexible sheet slide device are made up of teleblem bar, upper flexible sheet, upper and lower compression spring.Teleblem bar stage casing is that the little journal axle of top cylinder shaft body lower step, hypomere are that shaft shoulder shape, epimere are the externally threaded Step Shaft in termination.On the hypomere shaft shoulder, square set has seal ring, the underpart of the hypomere shaft shoulder is linked in bottom, epimere is fixed upper flexible sheet clamping locking nut by upper and lower compression spring, and stage casing is divided and do not moved engage sleeves in cap shape lid, isolation circle ring disk central authorities circular bosses central hole; Upper and lower compression spring structure is equally that a circle ring disk is provided with central circular bosses, and another surface is provided with central round recessed and all grooves of ring, and upper and lower compression spring is reverse.
The defect of this structure is: under working state not, the teleblem bar stage casing terrace of appearing on the stage heads on lower spring pad lower surface, flexible sheet central authorities are arched upward, making flexible sheet be subject to central authorities and the pretensioning encircling between week, is to move up and down as benchmark taking central authorities' face that arches upward and descend in working order the amplitude of diaphragm.Much bigger when when up, this warp tension ratio is descending, the amount of deformation of diaphragm is large, fatigue strength greatly, easily aging, affect working life.
Summary of the invention:
The purpose of this utility model is to overcome above-mentioned defect, and a kind of teleblem bar, flexible sheet slide device of natural gas pressure release valve for vehicle is provided.
Scheme of the present utility model is: comprise teleblem bar, upper elastic membrane, upper and lower compression spring, also comprise isolation circle ring disk, it is characterized in that: the end face height of topping bar of top, teleblem bar stage casing cylinder shaft body reduces, height reducing amount meets the following conditions: when reduction valve is under working state not, upper flexible sheet is full horizontal shape; Isolation circle ring disk upper surface is round recessed shape, and its lower surface is lower convex platform shape down, and upper surface round recessed internal diameter is greater than the central circular bosses external diameter of lower spring pad.
The utility model has the advantage of: upper flexible sheet reset condition horizontal, does not have pretensioning.Taking horizontal state as benchmark, upper and lower amplitude is average, does not have high amplitude, hightension phenomenon, improves working life simultaneously.
Brief description of the drawings:
Fig. 1 is prior art structural representation.
Fig. 2 is the utility model structural representation.
Embodiment:
The utility model comprises teleblem bar 1, upper flexible sheet 2, upper and lower compression spring, also comprise isolation circle ring disk 3, it is characterized in that: the end face height of topping bar of teleblem bar 1 top, stage casing cylinder shaft body reduces, height reducing amount meets the following conditions: when reduction valve is under working state not, upper flexible sheet 2 is full horizontal shape, isolation circle ring disk 3 upper surfaces are round recessed shape, and its lower surface is lower convex platform shape down, and upper surface round recessed internal diameter is greater than the central circular bosses external diameter of lower spring pad 4.
Corresponding isolation circle ring disk 3 central authorities are changed into recessed by epirelief, lower spring pad 4 lower convex platforms can not collide with isolation circle ring disk 3 upper surfaces, make buffer air chamber space air capacity constant simultaneously.
Claims (1)
1. the teleblem bar of a natural gas pressure release valve for vehicle, flexible sheet slide device, comprise teleblem bar (1), upper flexible sheet (2), upper and lower compression spring, also comprise isolation circle ring disk (3), it is characterized in that: the end face height of topping bar of teleblem bar (1) top, stage casing cylinder shaft body reduces, height reducing amount meets the following conditions: when reduction valve is under working state not, upper flexible sheet (2) is full horizontal shape, isolation circle ring disk (3) upper surface is round recessed shape, its lower surface is lower convex platform shape down, upper surface round recessed internal diameter is greater than the central circular bosses external diameter of lower spring pad (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181726.5U CN203809748U (en) | 2014-04-08 | 2014-04-08 | Membrane ejecting rod and elastic membrane sliding device of vehicle natural gas pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181726.5U CN203809748U (en) | 2014-04-08 | 2014-04-08 | Membrane ejecting rod and elastic membrane sliding device of vehicle natural gas pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809748U true CN203809748U (en) | 2014-09-03 |
Family
ID=51448498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181726.5U Expired - Fee Related CN203809748U (en) | 2014-04-08 | 2014-04-08 | Membrane ejecting rod and elastic membrane sliding device of vehicle natural gas pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809748U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697854A (en) * | 2016-04-01 | 2016-06-22 | 成都科盛石油科技有限公司 | Pilot device for main pressure reducing valve |
| CN106015650A (en) * | 2016-07-13 | 2016-10-12 | 成都安程通科技有限公司 | Natural gas reducing valve |
-
2014
- 2014-04-08 CN CN201420181726.5U patent/CN203809748U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105697854A (en) * | 2016-04-01 | 2016-06-22 | 成都科盛石油科技有限公司 | Pilot device for main pressure reducing valve |
| CN106015650A (en) * | 2016-07-13 | 2016-10-12 | 成都安程通科技有限公司 | Natural gas reducing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140903 Termination date: 20200408 |
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| CF01 | Termination of patent right due to non-payment of annual fee |