CN109139302A - CNG gas machine high pressure filter - Google Patents
CNG gas machine high pressure filter Download PDFInfo
- Publication number
- CN109139302A CN109139302A CN201811334376.0A CN201811334376A CN109139302A CN 109139302 A CN109139302 A CN 109139302A CN 201811334376 A CN201811334376 A CN 201811334376A CN 109139302 A CN109139302 A CN 109139302A
- Authority
- CN
- China
- Prior art keywords
- high pressure
- pressure filter
- relief valve
- jointing
- gas
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0203—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels characterised by the type of gaseous fuel
- F02M21/0215—Mixtures of gaseous fuels; Natural gas; Biogas; Mine gas; Landfill gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0227—Means to treat or clean gaseous fuels or fuel systems, e.g. removal of tar, cracking, reforming or enriching
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/023—Valves; Pressure or flow regulators in the fuel supply or return system
- F02M21/0242—Shut-off valves; Check valves; Safety valves; Pressure relief valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M21/00—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form
- F02M21/02—Apparatus for supplying engines with non-liquid fuels, e.g. gaseous fuels stored in liquid form for gaseous fuels
- F02M21/0218—Details on the gaseous fuel supply system, e.g. tanks, valves, pipes, pumps, rails, injectors or mixers
- F02M21/0293—Safety devices; Fail-safe measures
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention discloses a kind of CNG gas machine high pressure filters.The CNG gas machine high pressure filter includes: high pressure filter, is arranged in after gas cylinder, the primary filter as gas source；And relief valve, it is arranged on the high pressure filter, it include: relief valve air outlet adapter, compression spring, piston and jointing, one end of the jointing is connected to the tank inner chamber of high pressure filter, the other end has internal screw thread, one end periphery of the relief valve air outlet adapter has the bolted joint being adapted to the other end internal screw thread of jointing, and the relief valve air outlet adapter has plunger shaft, and one end of the plunger shaft is communicated to the end surface that is spirally connected of jointing by air flue；The piston is laid in plunger shaft, and one end compresses air flue, and the other end is abutted with compression spring.The CNG gas machine high pressure filter can effectively avoid high pressure gas to the damage of high pressure filter by adding decompression function, eliminate this security risk of engine.
Description
Technical field
The present invention relates to engine arts, especially with regard to a kind of CNG gas machine high pressure filter.
Background technique
CNG is the abbreviation of compressed natural gas (Compressed Natural Gas), is that natural gas is pressurizeed and stored up with gaseous state
It deposits in a reservoir, since during pressurization, greasy dirt, particle water, the impurity particle in gas source and equipment are more, can be entrained in
In natural gas, so being often used high pressure filter on natural gas CNG engine at present, in order to which primary filter compresses day
Impurity in right gas, clean air source simultaneously protect downstream part.
The arrangement of current CNG engine, usually high pressure filter are arranged in after gas cylinder, the primary mistake as gas source
Filter, Fig. 1 is the schematic diagram of gas circuit arrangement of parts of the current CNG engine from gas cylinder end to engine end, and help understands high pressure
Effect and arrangement of the filter in CNG engine.CNG storage pressure is generally (3~22) MPa, comes out from gas cylinder natural
Gas enters in high pressure filter, and high pressure filter maximum working pressure (MWP) currently on the market is usually (20~25) MPa, this
, it is intended that being more than this pressure, high pressure filter cannot guarantee to work normally even tank body and breakage occurs.It subjects
The tank body of 200 times of atmospheric pressure, it may be said that it is the dangerous high-pressure bottle of tool, and high pressure filter product institute in the market
The tank body used is very different, and whether the manufacturer of tank body has production high-pressure bottle qualification, and there is no one in industry at present
A unified standard.This results in the vehicle using high pressure filter, and there is some potential safety problemss.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of simple and reasonable CNG gas machine high pressure filter, the CNG gases
Machine high pressure filter can effectively avoid high pressure gas to the damage of high pressure filter, eliminate hair by adding decompression function
This security risk of motivation.
To achieve the above object, the present invention provides a kind of CNG gas machine high pressure filters, comprising: high pressure filter,
It is arranged in after gas cylinder, the primary filter as gas source；And relief valve, it is arranged on the high pressure filter, comprising: let out
Pressure valve air outlet adapter, compression spring, piston and jointing, one end of the jointing and the tank inner chamber of high pressure filter
Connection, the other end have internal screw thread, and one end periphery of the relief valve air outlet adapter has and spiral shell in the other end of jointing
The bolted joint of line adaptation, the relief valve air outlet adapter have plunger shaft, and one end of the plunger shaft is communicated to by air flue
The end surface that is spirally connected of connector；The piston is laid in plunger shaft, and one end compresses air flue, and the other end is supported with compression spring
It connects.
In a preferred embodiment, jointing is angle coupling.
In a preferred embodiment, the other end of jointing has conical internal thread.
In a preferred embodiment, the bolted joint of relief valve air outlet adapter is taper bolted joint.
In a preferred embodiment, have the backstop of radially evagination convex above the bolted joint of relief valve air outlet adapter
Edge.
Compared with prior art, CNG gas machine high pressure filter according to the present invention has the following beneficial effects: the CNG
Gas machine high pressure filter can effectively avoid damage of the high pressure gas to high pressure filter by adding decompression function, eliminate
This security risk of engine.
Detailed description of the invention
Fig. 1 is the low-pressure structure schematic diagram of CNG gas machine high pressure filter according to an embodiment of the present invention.
Fig. 2 is the high voltage structures schematic diagram of CNG gas machine high pressure filter according to an embodiment of the present invention.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As depicted in figs. 1 and 2, the specific structure of CNG gas machine high pressure filter according to the preferred embodiment of the present invention
The relief valve for including: high pressure filter 1 and being arranged on the high pressure filter, wherein relief valve includes: that relief valve outlet connects again
First 2, compression spring 3, piston 4 and jointing 5.When relief valve reaches vent pressure, relief valve is opened, the gas in filter
It is discharged into outside tank body, can effectively protect high pressure filter when gas circuit, which is abnormal, leads to hypertonia, high pressure gas is to high pressure
The damage of filter eliminates this security risk of engine.
Specifically, high pressure filter 1 is arranged in after gas cylinder, the primary filter as gas source.Natural gas pressurization and with
Gaseous state stores in a reservoir, since during pressurization, greasy dirt, particle water, the impurity particle in gas source and equipment are more, meeting
It is entrained in natural gas, so being often used high pressure filter on natural gas CNG engine, in order to primary filter compression
Impurity in natural gas, clean air source simultaneously protect downstream part.
Relief valve is arranged on the high pressure filter, and when reaching vent pressure, relief valve is opened, and the gas in filter is released
It is put into outside tank body, relief valve includes: relief valve air outlet adapter 2, compression spring 3, piston 4 and jointing 5.Wherein, connection connects
First 5 one end is connected to the tank inner chamber of high pressure filter 1, for natural gas to be imported relief valve.The other end of jointing 5
With internal screw thread, for connecting relief valve air outlet adapter 2.One end periphery of relief valve air outlet adapter 2 has and jointing 5
The bolted joint of other end internal screw thread adaptation, relief valve air outlet adapter 2 have plunger shaft, and one end of the plunger shaft is connected to by air flue
To the end surface that is spirally connected of jointing 5；Piston 4 is laid in plunger shaft, and one end compresses air flue, the other end and compression spring 3
It abuts, when high pressure filter pressure is lower, when being insufficient to allow compression spring deformation occurs, spring compression piston seals relief valve
Tiny air flue in air outlet adapter, works normally high pressure filter.When the pressure in high pressure filter gas tank reaches certain value
When, pressure is passed on the seal face of piston by the tiny air flue in relief valve air outlet adapter, when pressure is sufficiently large, pressure
Deformation occurs for spring, and piston overpowers gravity is raised, and the air flue of relief valve forms open circuit, and the high pressure gas in gas cylinder passes through this channel
Drain tank is external, to achieve the purpose that pressure release.
Preferably, jointing 5 is angle coupling.
The other end of jointing 5 has conical internal thread, and the bolted joint of relief valve air outlet adapter 2 is taper bolted joint.
Preferably, there is the stop lug of radially evagination above the bolted joint of relief valve air outlet adapter 2.
Fig. 1 show that high pressure filter pressure is lower, when the pressure reduction in high pressure filter gas tank is to certain value, pressure
Power spring return function, pushes piston seal air flue, and the air flue of relief valve forms closed circuit, high pressure filter normal work.
Fig. 2 is shown when the pressure in high pressure filter gas tank reaches certain value, and pressure passes through relief valve air outlet adapter
Interior tiny air flue is passed on the seal face of piston, and when pressure is sufficiently large, deformation occurs for compression spring, piston overpowers gravity
It is raised, the air flue of relief valve forms open circuit, and the high pressure gas in gas cylinder is external by this channel drain tank, to reach pressure release
Purpose can be avoided and be produced in upstream storage pressure exception or the failure of downstream part switching function with effective protection high pressure filter
When raw pressure accumulation, high pressure gas is endangered caused by filter.
In addition, passing through the elasticity modulus for changing spring, so that it may the cracking pressure of high pressure filter is controlled, to realize
Under different gas circuit demand pressures, high pressure filter is protected.
To sum up, which effectively can avoid high pressure gas to high pressure by adding decompression function
The damage of filter eliminates this security risk of engine.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (5)
1. a kind of CNG gas machine high pressure filter characterized by comprising
High pressure filter is arranged in after gas cylinder, the primary filter as gas source；And
Relief valve is arranged on the high pressure filter, comprising: relief valve air outlet adapter, compression spring, piston and connection connect
Head, one end of the jointing are connected to the tank inner chamber of high pressure filter, and the other end has internal screw thread, and the relief valve goes out
One end periphery of gas connector has the bolted joint being adapted to the other end internal screw thread of jointing, the relief valve air outlet adapter tool
There is plunger shaft, one end of the plunger shaft is communicated to the end surface that is spirally connected of jointing by air flue；The piston is laid in work
Fill in intracavitary, one end compresses air flue, and the other end abuts with compression spring.
2. CNG gas machine high pressure filter as described in claim 1, which is characterized in that the jointing is angle coupling.
3. CNG gas machine high pressure filter as described in claim 1, which is characterized in that the other end of the jointing has
There is conical internal thread.
4. CNG gas machine high pressure filter as claimed in claim 3, which is characterized in that the spiral shell of the relief valve air outlet adapter
Connector is taper bolted joint.
5. CNG gas machine high pressure filter as described in claim 1, which is characterized in that the spiral shell of the relief valve air outlet adapter
There is the stop lug of radially evagination above connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811334376.0A CN109139302A (en) | 2018-11-09 | 2018-11-09 | CNG gas machine high pressure filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811334376.0A CN109139302A (en) | 2018-11-09 | 2018-11-09 | CNG gas machine high pressure filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109139302A true CN109139302A (en) | 2019-01-04 |
Family
ID=64808070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811334376.0A Pending CN109139302A (en) | 2018-11-09 | 2018-11-09 | CNG gas machine high pressure filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109139302A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5474104A (en) * | 1995-01-17 | 1995-12-12 | Superior Valve Company | Refueling check valve for compressed natural gas powered vehicles |
| EP0777168A2 (en) * | 1995-11-06 | 1997-06-04 | Itt Manufacturing Enterprises, Inc. | A CNG regulator |
| CN201236991Y (en) * | 2008-07-16 | 2009-05-13 | 宁波星箭航天机械厂 | High-pressure reducing valve |
| CN201992148U (en) * | 2011-03-16 | 2011-09-28 | 丹阳市飞轮气体阀门有限公司 | Natural gas cylinder valve flow-limiting device for vehicles |
| CN105937638A (en) * | 2016-06-16 | 2016-09-14 | 成都迅航机电有限公司 | Air reducing valve with air filtering device |
| CN206347163U (en) * | 2016-12-29 | 2017-07-21 | 浙江科力车辆控制系统有限公司 | Spring loaded safety valve |
| CN106988932A (en) * | 2017-06-02 | 2017-07-28 | 广西玉柴机器股份有限公司 | The gas supply system of CNG natural gas engines |
-
2018
- 2018-11-09 CN CN201811334376.0A patent/CN109139302A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5474104A (en) * | 1995-01-17 | 1995-12-12 | Superior Valve Company | Refueling check valve for compressed natural gas powered vehicles |
| EP0777168A2 (en) * | 1995-11-06 | 1997-06-04 | Itt Manufacturing Enterprises, Inc. | A CNG regulator |
| CN201236991Y (en) * | 2008-07-16 | 2009-05-13 | 宁波星箭航天机械厂 | High-pressure reducing valve |
| CN201992148U (en) * | 2011-03-16 | 2011-09-28 | 丹阳市飞轮气体阀门有限公司 | Natural gas cylinder valve flow-limiting device for vehicles |
| CN105937638A (en) * | 2016-06-16 | 2016-09-14 | 成都迅航机电有限公司 | Air reducing valve with air filtering device |
| CN206347163U (en) * | 2016-12-29 | 2017-07-21 | 浙江科力车辆控制系统有限公司 | Spring loaded safety valve |
| CN106988932A (en) * | 2017-06-02 | 2017-07-28 | 广西玉柴机器股份有限公司 | The gas supply system of CNG natural gas engines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190104 |