CN203702374U - Improved structure of pressure reducer of gas-fueled vehicle - Google Patents

Improved structure of pressure reducer of gas-fueled vehicle Download PDF

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Publication number
CN203702374U
CN203702374U CN201420037192.9U CN201420037192U CN203702374U CN 203702374 U CN203702374 U CN 203702374U CN 201420037192 U CN201420037192 U CN 201420037192U CN 203702374 U CN203702374 U CN 203702374U
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China
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gas
level
improved
link
pressure
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CN201420037192.9U
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Chinese (zh)
Inventor
陈志法
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Ningbo anlite Machinery Co., Ltd.
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FENGHUA ANLITE MACHINERY Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/30Use of alternative fuels, e.g. biofuels

Abstract

The utility model discloses an improved structure of a pressure reducer of a gas-fueled vehicle. The improved structure of the pressure reducer of the gas-fueled vehicle comprises a shell provided with a first-level pressure reducing chamber and a second-level pressure reducing chamber. A first-level pressure reducing assembly is arranged in the first-level pressure reducing chamber and a second-level pressure reducing assembly is arranged in the second-level pressure reducing chamber. The shell is provided with a low-pressure port communicated with the second-level pressure reducing chamber and a high-pressure gas inlet assembly communicated with the first-level pressure reducing chamber. The high-pressure gas inlet assembly comprises a prism sleeve, a steel ball, a sealing plug, a connecting piece, a filter element, an end cover and a gas inlet connector. A blind hole is formed in the inner side of the connecting piece. The filter element is arranged at the outer side of the connecting piece. The prism sleeve can be arranged in the blind hole in a sliding mode. The gas inlet connector is fixedly connected with the connecting piece through the end cover. According to the improved structure of the pressure reducer of the gas-fueled vehicle, the structure of the high-pressure gas inlet assembly is improved, the flexibility of the movement of the prism sleeve is improved, and then the operation performance of the whole natural gas pressure reducer is improved.

Description

A kind of gas-fueled vehicles decompressor structure-improved
Technical field
The utility model relates to gas-fueled vehicles decompressor technical field, especially relates to a kind of gas-fueled vehicles decompressor structure-improved.
Background technique
The engineering completion of transferring natural gas from the west to the east along with " the longest natural gas line in the world " under national support, gas-fueled vehicles and gasoline automobile relatively fuel cost save 50%, exhaust emissions reduces 70%, have the double dominant of economic environmental protection concurrently, make domestic gas combustion automobile industry present the situation of explosive growth in recent years.
Gas-fueled vehicles decompressor is a vitals of gas-fueled vehicles, its quality will directly have influence on the power performance of automobile, it mainly plays decompression and voltage stabilizing in gas-fueled vehicles, therefore, by utilizing decompressor, the compressed natural gas pressure of 20MPa left and right can be dropped to 0.8-2.5KPa and enter mixer, to be mixed into cylinder with air, because CNG gas pressure in gas cylinder is along with fuel fills and use continuous variation, keep more stable air fuel ratio control, also require no matter how pressure of the inside of a bottle changes, it is basicly stable that pressure reducing regulator also should guarantee to enter the gaseous-pressure of mixer, thereby realize the effect of decompression and voltage stabilizing.The principle of CNG reduction valve decompression is throttling, when gas flow is crossed the gap between core and valve seat, pressure reduces, reach the object of decompression, the principle of CNG reduction valve voltage stabilizing is equilibrium of forces, because the stroke of spring is set, reach balance, the pressure of room of outlet must be followed spring force balance, in the time of inlet pressure and flow variation, utilize the pressure balance of spring force and room of outlet to keep outlet pressure substantially constant, this is an equilibrium process, be not to complete moment, because spring, moving core etc. has certain quality, in movement, there is friction with some other parts such as valve bodies.
The high pressure admission assembly of existing CNG decompressor is that the flip sleeve of employing activity promotes the connecting rod action being connected with first diaphragm, and this flip sleeve also will play the effect of sealed high pressure inlet hole simultaneously, the long-term outer wall that uses its flip sleeve can form larger slip resistance because of rock gas impurities accumulation, make the sensitivity of flip sleeve to the keying of high pressure admission hole and the impetus to connecting rod, cause decompression and the voltage regulation performance of whole CNG decompressor to decline, and existing CNG decompressor also exists charge flow rate less, make the larger problem of pressure drop from gas cylinder to one-level underpressure chamber.
Model utility content
The deficiency existing for above-mentioned prior art, the purpose of this utility model is to provide a kind of gas-fueled vehicles decompressor structure-improved, improves the mobile sensitivity of prism cover, and then promotes the service behaviour of whole rock gas decompressor.
To achieve these goals, the technological scheme that the utility model adopts is:
A kind of gas-fueled vehicles decompressor structure-improved, comprise the housing that is provided with one-level underpressure chamber and second depressurized chamber, in one-level underpressure chamber, be equiped with one-level pressure relief assembly, the indoor second depressurized assembly that is equiped with of second depressurized, described one-level pressure relief assembly comprises connecting rod, first diaphragm and one-level spring, described second depressurized assembly comprises needle, secondary diaphragm and two-level spring, housing is provided with the low-voltage interface being communicated with second depressurized chamber and the high pressure admission assembly being communicated with one-level underpressure chamber, described high pressure admission assembly comprises prism cover, steel ball, seal plug, link, filter core, end cap and air input joint, link is fixedly connected with housing, the inboard of link is provided with blind hole, the outside of link is provided with filter core, the inside of link is offered and is communicated with its inside and outside through hole of both sides, prism cover is installed in described blind hole slidably, the both sides of prism cover are respectively equipped with mounting groove, steel ball is installed in the inboard mounting groove of prism cover, seal plug is installed in the outside mounting groove of prism cover, air input joint is fixedly connected with link by end cap.
Wherein, described prism cover is hexagonal cover.Described seal plug is provided with lead angle.Described filter core comprises metal net mask and wool felt, and wool felt is installed in metal net mask.
Adopt after technique scheme, the advantage that compared to the prior art the utility model had is:
These gas-fueled vehicles decompressor is improved mainly for high pressure admission assembly, face between flip sleeve in prior art and link is contacted to the line being improved between prism cover and link to be contacted, reduce area of contact, avoid using for a long time the force of sliding friction between prism cover and link to increase, improve the mobile sensitivity of prism cover, and then promote the service behaviour of whole rock gas decompressor.The outside of link is provided with filter core, high-pressure gas enters into link interior bone after filter element filtering, the both sides of prism cover are respectively equipped with mounting groove, steel ball is installed in the inboard mounting groove of prism cover, seal plug is installed in the outside mounting groove of prism cover, the pressure that seal plug is subject to high-pressure gas drives the blind hole inwards side shifting of prism cover along link front end, make to be positioned at prism and overlap inboard steel ball promotion connecting rod action, and then one-level pressure relief assembly running, when the pressure in one-level underpressure chamber excessive, first diaphragm drives connecting rod and steel ball to offset, and then promotion prism cover moves laterally along the blind hole of link front end, seal plug is sealed through hole, reduce high-pressure gas and enter flow.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated:
Fig. 1 is structural representation of the present utility model.
In figure, 1: housing; 2: one-level underpressure chamber; 3: second depressurized chamber; 4: air-flow path; 5: high pressure admission assembly; 6: prism cover; 7: steel ball; 8: seal plug; 9: link; 10: filter core; 11: end cap; 12: air input joint.
Embodiment
The following stated is only preferred embodiment of the present utility model, does not therefore limit protection domain of the present utility model.
Embodiment, as shown in Figure 1.
A kind of gas-fueled vehicles decompressor structure-improved, comprise the housing 1 that is provided with one-level underpressure chamber 2 and second depressurized chamber 3, in one-level underpressure chamber 2, be equiped with one-level pressure relief assembly, in second depressurized chamber 3, be equiped with second depressurized assembly, one-level pressure relief assembly comprises connecting rod, first diaphragm and one-level spring, second depressurized assembly comprises needle, secondary diaphragm and two-level spring, and housing 1 is provided with the low-voltage interface being communicated with second depressurized chamber 3 and the high pressure admission assembly 5 being communicated with one-level underpressure chamber 2.
Between one-level underpressure chamber 2 and second depressurized chamber 3, be provided with air-flow path 4, housing 1 is provided with the electromagnetic pilot valve assembly opening and closing for controlling this air-flow path 4, air-flow path 4 is provided with needle seat, the bottom of needle can be installed in this needle seat up or down, needle moves up and down in needle seat can be from regulating the gas flow of one-level underpressure chamber 2 to second depressurized chamber 3, the top of needle is fixedly connected with secondary diaphragm, and the upper end of secondary diaphragm is provided with two-level spring.Wherein two-level spring comprises loaded spring and the pressure compensation spring that is sheathed on this loaded spring inside, can extend the working life of two-level spring.
The lower end of first diaphragm is provided with one-level spring, and the upper end of first diaphragm is flexibly connected with connecting rod, and first diaphragm moves up and down and can rotate by drivening rod.
High pressure admission assembly 5 comprises prism cover 6, steel ball 7, seal plug 8, link 9, filter core 10, end cap 11 and air input joint 12, link 9 is fixedly connected with housing 1 screw thread, the inboard of link 9 is provided with blind hole and (it should be noted that, inboard is the left side of accompanying drawing 1, correspondingly outside is the right side of accompanying drawing 1), end cap 11 is fixedly connected with link 9 screw threads, the outside of link 9 is provided with filter core 10, the inside of link 9 is offered and is communicated with its inside and outside through hole of both sides, prism cover 6 is installed in described blind hole slidably, the both sides of prism cover 6 are respectively equipped with mounting groove, steel ball 7 is installed in the inboard mounting groove of prism cover 6, seal plug 8 is installed in the outside mounting groove of prism cover 6, the pressure that seal plug 8 is subject to high-pressure gas drives the prism cover 6 blind hole side shiftings inwards along link 9 front ends, make to be positioned at the steel ball 7 that prism overlaps 6 inboards and promote connecting rod action, and then one-level pressure relief assembly running, when the pressure in one-level underpressure chamber 2 excessive, first diaphragm drives connecting rod and steel ball 7 to offset, and then promotion prism cover 6 moves laterally along the blind hole of link 9 front ends, seal plug 8 is sealed through hole, reduce high-pressure gas and enter flow.
Further, prism cover 6 is hexagonal cover, and air input joint 12 is fixedly connected with link 9 by end cap 11.Hexagonal cover can guarantee the coaxality contacting with blind hole, and between the hole wall of the blind hole of prism cover 6 and link 9 front ends for line contacts, can reduce area of contact, avoid using for a long time the force of sliding friction between prism cover 6 and link 9 to increase, improve 6 sensitivity of moving of prism cover, and then promote the service behaviour of whole rock gas decompressor.Between the hole wall of the blind hole of prism cover 6 and link 9 front ends, there is the gap for high-pressure gas circulation, can enter for high-pressure gas.
Further, filter core 10 comprises metal net mask and wool felt, and wool felt is installed in metal net mask, and the impurity in high-pressure gas enters in these gas-fueled vehicles decompressor after filter core 10 filters again.Seal plug 8 is provided with lead angle, on the hole wall of blind hole, offers vent, being centered close on the tangent line that seal plug 8 and link 9 interior bone offset of this vent, and the lead angle of seal plug 8 can strengthen high-pressure gas with coordinating of vent and enter flow.
The above is only preferred embodiments of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.

Claims (4)

1. a gas-fueled vehicles decompressor structure-improved, comprise the housing (1) that is provided with one-level underpressure chamber (2) and second depressurized chamber (3), one-level underpressure chamber is equiped with one-level pressure relief assembly in (2), second depressurized chamber is equiped with second depressurized assembly in (3), described one-level pressure relief assembly comprises connecting rod, first diaphragm and one-level spring, described second depressurized assembly comprises needle, secondary diaphragm and two-level spring, housing (1) is provided with the low-voltage interface being communicated with second depressurized chamber (3) and the high pressure admission assembly (5) being communicated with one-level underpressure chamber (2), it is characterized in that: described high pressure admission assembly (5) comprises prism cover (6), steel ball (7), seal plug (8), link (9), filter core (10), end cap (11) and air input joint (12), link (9) is fixedly connected with housing (1), the inboard of link (9) is provided with blind hole, the outside of link (9) is provided with filter core (10), the inside of link (9) is offered and is communicated with its inside and outside through hole of both sides, prism cover (6) is installed in described blind hole slidably, the both sides of prism cover (6) are respectively equipped with mounting groove, steel ball (7) is installed in the inboard mounting groove of prism cover (6), seal plug (8) is installed in the outside mounting groove of prism cover (6), air input joint (12) is fixedly connected with link (9) by end cap (11).
2. gas-fueled vehicles decompressor structure-improved according to claim 1, is characterized in that: described prism cover (6) is hexagonal cover.
3. gas-fueled vehicles decompressor structure-improved according to claim 1, is characterized in that: described seal plug (8) is provided with lead angle.
4. gas-fueled vehicles decompressor structure-improved according to claim 1, is characterized in that: described filter core (10) comprises metal net mask and wool felt, and wool felt is installed in metal net mask.
CN201420037192.9U 2014-01-20 2014-01-20 Improved structure of pressure reducer of gas-fueled vehicle Active CN203702374U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106014697A (en) * 2016-07-13 2016-10-12 成都安程通科技有限公司 Two-stage pressure reducing type natural gas 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
CN106050481A (en) * 2016-07-13 2016-10-26 成都安程通科技有限公司 Natural gas reducing valve for natural gas automobile

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106014697A (en) * 2016-07-13 2016-10-12 成都安程通科技有限公司 Two-stage pressure reducing type natural gas 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
CN106050481A (en) * 2016-07-13 2016-10-26 成都安程通科技有限公司 Natural gas reducing valve for natural gas automobile

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GR01 Patent grant
C14 Grant of patent or utility model
CP03 Change of name, title or address

Address after: Yongan road Xikou Town Industrial Park Fenghua District Zhejiang city of Ningbo province No. 7 315500

Patentee after: Ningbo anlite Machinery Co., Ltd.

Address before: 315500 Yongan road Zhejiang city Fenghua province Xikou Industrial Park No. 7

Patentee before: FENGHUA ANLITE MACHINERY CO., LTD.

CP03 Change of name, title or address