CN106194505B - A kind of adjustable air-fuel ratio mixer for V-type gas compressor - Google Patents
A kind of adjustable air-fuel ratio mixer for V-type gas compressor Download PDFInfo
- Publication number
- CN106194505B CN106194505B CN201610875704.2A CN201610875704A CN106194505B CN 106194505 B CN106194505 B CN 106194505B CN 201610875704 A CN201610875704 A CN 201610875704A CN 106194505 B CN106194505 B CN 106194505B
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- mixer
- inner core
- current divider
- mixer inner
- case
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Classifications
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- 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
- F02M21/04—Gas-air mixing apparatus
- F02M21/042—Mixer comprising a plurality of bores or flow passages
-
- 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
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- 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)
Abstract
The invention belongs to natural gas in oil and gas fields to adopt defeated gas compressor technical field, and in particular to a kind of mixer that can mechanically adjust air-fuel ratio.A kind of mixer that can mechanically adjust air-fuel ratio proposed has the mixer case of tubular structure（1）；Mixer inner core is provided in the center cavity of mixer case；Mixer inner core is by upper section mixer inner core（2）With lower part mixer inner core（10）It constitutes；Upper section mixer inner core（2）With lower part mixer inner core（10）Between gap constitute blast tube（11）；The lower part mixer inner core（10）Be provided centrally with current divider（3）；Current divider（3）It is fastened on lower part mixer inner core（10）On center；Lower mixer is additionally provided with positioning bolt（5）.The present invention should reduce existing air-fuel ratio regulation system a large amount of regulating member such as gas consumption adjusting valve, pressure regulator valve etc., have the characteristics that adjustment is simple and effective.
Description
Technical field
The invention belongs to natural gas in oil and gas fields to adopt defeated gas compressor technical field, and in particular to one kind can be adjusted mechanically
The mixer of air-fuel ratio.
Background technology
The patent No. 201520000866.2 discloses a kind of shale gas V-type engine compression and adopts defeated machine and system, in the patent
The content is the machinery composition for including power section and compression section；Wherein power section is that a kind of gaseous fuel starts
Machine；The gaseous propellant engine is done work using fuel gas as fuel, drives compression section to the shale gas in exploitation
It is compressed efficiently to convey；Gaseous propellant engine combustion gas control and air-fuel ratio regulation system include mixer, mixing
The effect of device be in certain pressure and certain temperature range clean gaseous fuel and air mixed, make its shape
At for the gaseous mixture of work by combustion, the fuel for acting uniformly is provided for gaseous propellant engine.The gaseous mixture of formation
Middle air and the ratio of combustion gas are known as the point that air-fuel ratio, the size of air-fuel ratio and the uniformity of gaseous mixture will directly affect spark plug
Combustion position in fire and cylinder, and then influence power, efficiency and the discharge of gaseous propellant engine.
Currently used for gaseous propellant engine mixer there are two types of：Venturi-type mixer and diaphragm-type mixer；
But the adjusting air-fuel ratio that both mixers can not all utilize self structure autonomous, venturi mixer and diaphragm-type mixer
Before be required to increase gas flow regulating device such as butterfly valve type gas flow valve and pressure regulator valve etc., what is more important is not in face of
Same air source, when calorific value, gas concentration vary widely, larger change can all occur in the air-fuel ratio regulation ability of these mixers
Change, phenomena such as throttling, out of proportion, Venturi effect reduces occurs.
Invention content
In order to solve the above-mentioned technical problem, the purpose of the present invention is to propose to a kind of mixing that can mechanically adjust air-fuel ratio
Device.
It is adopted the following technical scheme that complete the above-mentioned purpose present invention：
A kind of mixer that can mechanically adjust air-fuel ratio, the mixer have mixer case；The mixing
Device shell is the tubular structure of both ends open；Mixer inner core is provided in the center cavity of the mixer case；Described
Mixer inner core is made of upper section mixer inner core and lower part mixer inner core；The upper section mixer inner core is under
There is gap, and gap between the two constitutes blast tube between section mixer inner core；In the upper section mixer
Core be by the hollow cone stage body of the upper end tapered diameter downwards of mixer case, and the upper end of upper section mixer inner core with mix
Device shell is integrally formed；There is gap between the upper section mixer inner core and mixer case；The lower part
Mixer inner core is hollow cylinder, and has gap between lower part mixer inner core and mixer case；The lower part
The bottom of mixer inner core has the annular convex platform outwardly protruded；There is external screw thread on the periphery of the annular convex platform；Lower part
Divide mixer inner core to be threadedly coupled with the mixer case by the annular convex platform to be integrated, and lower part mixer
Inner core can move up and down in mixer case, change the distance between upper section mixer inner core, logical so as to adjust combustion gas
The size in road；The bottom of lower part mixer inner core center cavity is provided with three floors being uniformly distributed along the circumference；Three ribs
One end of plate is intersected in the center of lower part mixer inner core center cavity bottom；Upper section mixer inner core and mixer case
Between between possessed gap, lower part mixer inner core and mixer case possessed gap collectively form pressure stabilizing cavity；
Space between the upper section mixer inner core and lower part mixer inner core end face is the air duct of mixer；It is described
Lower part mixer inner core is provided centrally with current divider；The current divider is bulb type structure；The current divider is by dividing
Stream device connector is fastened on lower part mixer inner core center；The upper end circular arc portion of the current divider is changing air stream
Line is distributed, and so that it is mixed in combustion gas in emitting shape and is formed mixed uniformly gaseous mixture；The current divider of bulb type structure is by lower part
The center cavity of mixer inner core is divided to be divided into expanding gaseous mixture runner from top to bottom；The mixer is additionally provided with use
With the positioning bolt positioned to the lower part mixer inner core after adjustment；On the wall surface of the lower part mixer inner core
With the location hole matched with the positioning bolt kiss；The location hole is multilayer setting up and down；The mixer shell
There is the connecting hole passed through to the positioning bolt on body；The connecting hole is one layer multiple, by making positioning bolt
Connecting hole on mixer and one layer of multiple location hole cooperation corresponding on lower part mixer inner core wall surface, are realized
In the positioning of different location lower part mixer inner core.
The current divider connector is metal cylinder hollow structure, and outer circle has screw thread, matches with current divider end-face helical
It closes, inner circle has the screw thread coordinated with fastening bolt；The current divider connector passes through fastening bolt and the lower part
Mixer inner core is fixed, to make current divider be fixed with the lower part mixer inner core.
The current divider is from top to bottom followed successively by arc section A, throat B and circular cone contraction section C.
A kind of mixer that can mechanically adjust air-fuel ratio proposed by the present invention has the following effects that using the above scheme：
1）Current divider is only replaced for different air sources and adjusts the position of blender end inner core（Because it connect with current divider
Together, current divider position is equally conditioned）, so that it may to adjust air-fuel ratio；The mixer that air-fuel ratio can mechanically be adjusted subtracts
Existing air-fuel ratio regulation system a large amount of regulating member such as gas consumption adjusting valve, pressure regulator valve etc. is lacked；This can mechanically be adjusted
The mixer of air-fuel ratio is different from other venturi mixers and the same structure of diaphragm-type mixer may be only available for specific gas
The air and combustion gas mixing in source, the mixer that can mechanically adjust air-fuel ratio are being used in rubbish landfill gas, low concentration gas
It only needs to use positioning bolt tune when the difference air source such as gas, high concentration gas gas, oil field gas, shale gas, conventional natural gas
The position of whole blender end inner core, adjustment are simple and effective；
2）Current divider is engineering plastics, if frequently using the screw-thread fit of bolt and current divider end face, can be caused point
The thread damage of device end face is flowed, therefore devises current divider connector, current divider connector is metal cylinder hollow structure, outer circle
For helicitic texture, coordinate with current divider end-face helical, inner circle is all helicitic texture, but is coordinated with fastening bolt；Positioning bolt
For half-thread structure, it is helicitic texture to close on bolt head, can be fixed on mixer case by the helicitic texture, separate
The part of bolt head is smooth rod-like structure, is exactly matched with the aperture on blender end inner core by the smooth rod-like structure
It closes, adjusts the position of blender end inner core；Sealing bolt, sealing ring and mounting gasket are standard component, play the work of connection sealing
With.
Description of the drawings
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the upward view of Fig. 1.
In figure：1, mixer case, 2, upper section mixer inner core, 3, current divider, 4, current divider connector, 5, positioning spiral shell
Bolt, 6, sealing bolt, 7, sealing ring, 8, fastening bolt, 9, mounting gasket, 10, lower part mixer inner core, 11, blast tube,
12, pressure stabilizing cavity, 13, arc section A, 14, throat B, 15, circular cone contraction section C.
Specific implementation mode
The present invention is illustrated with reference to the drawings and specific embodiments.
As shown in Figure 1 and Figure 2, a kind of mixer that can mechanically adjust air-fuel ratio, the mixer have mixer shell
Body 1；The mixer case 1 is manufactured by cast aluminium alloy；The mixer case 1 is the tubular structure of both ends open；Institute
It states and is provided with mixer inner core in the center cavity of mixer case；The mixer inner core is by upper section mixer inner core 2
It is constituted with lower part mixer inner core 10；Have between the upper section mixer inner core 2 and lower part mixer inner core 10
Gap, and gap between the two constitutes blast tube 11；The upper section mixer inner core 2 is by mixer case 1
The hollow cone stage body of upper end tapered diameter downwards, and the upper end of upper section mixer inner core 2 is integrated into mixer case 1
Type；There is gap between the upper section mixer inner core 2 and mixer case 1；The lower part mixer inner core 10
For hollow cylinder, and there is gap between lower part mixer inner core 10 and mixer case 1；In the lower part mixer
The bottom of core 10 has the annular convex platform outwardly protruded；There is external screw thread on the periphery of the annular convex platform；Lower part mixes
Device inner core 10 is threadedly coupled with the mixer case 1 by the annular convex platform and is integrated, and in lower part mixer
Core 10 can move up and down in mixer case 1, change the distance between upper section mixer inner core 2, so as to adjust combustion gas
The size in channel；The bottom of 10 center cavity of lower part mixer inner core is provided with three floors being uniformly distributed along the circumference；Three institutes
The one end for stating floor is intersected in the center of lower part mixer inner core center cavity bottom；Upper section mixer inner core 2 with mix
The possessed common structure in gap between possessed gap, lower part mixer inner core 10 and mixer case 1 between device shell 1
At pressure stabilizing cavity 12；Space between 10 end face of the upper section mixer inner core 2 and lower part mixer inner core is mixer
Air duct；The lower part mixer inner core is provided centrally with current divider 3；The current divider 3 is bulb type structure；
The current divider 3 is fastened on by current divider connector 4 on 10 center of lower part mixer inner core；The upper end of the current divider 3
Circular arc portion makes it be mixed in combustion gas in emitting shape and forms mixed uniformly gaseous mixture to change air flow line distribution；Bulb type
The center cavity of lower part mixer inner core is divided into expanding gaseous mixture runner from top to bottom by the current divider of structure；
The mixer is additionally provided with the positioning bolt 5 to be positioned to the lower part mixer inner core after adjustment；Described
Have on the wall surface of lower part mixer inner core and kisses the location hole matched with the positioning bolt 5；The location hole is upper and lower
The multilayer of setting；There is the connecting hole passed through to the positioning bolt on the mixer case 1；The connecting hole
It is multiple for one layer, by make positioning bolt pass through mixer on connecting hole and with phase on 10 wall surface of lower part mixer inner core
The one layer of multiple location hole cooperation answered, realizes the positioning in different location lower part mixer inner core 10.
The current divider connector 4 is metal cylinder hollow structure, and outer circle has screw thread, matches with current divider end-face helical
It closes, inner circle has the screw thread coordinated with fastening bolt；The current divider connector 4 passes through fastening bolt and the lower part
Mixer inner core 10 is fixed, to make current divider 3 be fixed with the lower part mixer inner core 10.
The current divider 3 is from top to bottom followed successively by arc section A13, larynx by the solid construction of engineering plastics injection molding
Portion B14 and circular cone contraction section C15；The ground of circular cone contraction section C15 is plane, has threaded hole perpendicular to plane machining；Because
Current divider 3 is engineering plastics can cause 3 end face of current divider if frequently using the screw-thread fit of bolt and 3 end face of current divider
Thread damage, therefore devise current divider connector 4, current divider connector 4 is metal cylinder hollow structure, and outer circle is screw thread
Structure coordinates with 3 end-face helical of current divider, and inner circle is all helicitic texture, but coordinates with fastening bolt；Fastening bolt 8 is point
The counterpart of 4 inner circle bolt of device connector is flowed, is plain bolt.Positioning bolt 5 is half-thread structure, and it is spiral shell to close on bolt head
Line structure can be fixed on by the helicitic texture on mixer case 1, and the part far from bolt head is smooth rod-shaped knot
Structure is exactly to be coordinated by the aperture in the smooth rod-like structure and blender end inner core, the position of adjustment blender end inner core 2.
Sealing bolt 6, sealing ring 7 and mounting gasket 9 are standard component, play the role of connection sealing.
The present invention uses preceding assembling process：Current divider 3 and current divider connector 4 are linked together, the group that will be connected
Part is mounted on by fastening bolt 8 and mounting gasket 9 on mixer inner core 2, and component at this time is installed to mixer case 1
On, the unthreaded hole on blender end inner core 2 is cast lug by position according to the attribute of practical air source with some on mixer case 1
Threaded hole alignment, install positioning bolt 5, on mixer case 1 other casting lugs on installation sealing bolt 6 and sealing
Circle 7.
Using the mixer of the present invention that can mechanically adjust air-fuel ratio, met to different gas by method used below
Source, operating mode air-fuel ratio regulation：
The cooperation for adjusting positioning bolt 5 and different 10 location holes of lower part blender end inner core, so as to adjust lower part
The position of blender end inner core 1 changes the size in gas circulation channel；The position of current divider 3 can also be mixed with lower part simultaneously
Device end inner core 1 changes together, to influence relative positions of the throat B in mixer case 1；When " blast tube " becomes larger,
Throat B is gradually to drawing close at " blast tube ";Combustion gas smaller for gas concentration, gaseous-pressure is lower, calorific value is fewer, mixing
The distance of device end inner core 2 should the center away from mixer case 1 it is remoter, formed larger " blast tube ", throat B closer to " combustion
Gas channel ";Vice versa for the combustion gas that gas concentration is big, gaseous-pressure is higher, calorific value is big, lower part blender end inner core should be reduced
1 distance away from 1 center of mixer case forms smaller " blast tube ", and throat B is further away from " blast tube ".
Claims (3)
1. a kind of adjustable air-fuel ratio mixer for V-type gas compressor, it is characterised in that：The mixer has mixing
Device shell（1）；The mixer case（1）For the tubular structure of both ends open；In the center cavity of the mixer case
It is provided with mixer inner core；The mixer inner core is by upper section mixer inner core（2）With lower part mixer inner core（10）
It constitutes；The upper section mixer inner core（2）With lower part mixer inner core（10）Between there is gap, and between the two
Gap constitutes blast tube（11）；The upper section mixer inner core（2）For by mixer case（1）Upper end it is tapered downwards
The hollow cone stage body of diameter, and the upper end of upper section mixer inner core is integrally formed with mixer case；The upper part
Mixer inner core（2）With mixer case（1）Between have gap；The lower part mixer inner core（10）For hollow cylinder
Body, and lower part mixer inner core（10）With mixer case（1）Between have gap；The lower part mixer inner core（10）
Bottom there is the annular convex platform that outwardly protrudes；There is external screw thread on the periphery of the annular convex platform；In lower part mixer
Core（10）Pass through the annular convex platform and the mixer case（1）Threaded connection is integrated, and in lower part mixer
Core（10）It can be in mixer case（1）It inside moves up and down, changes and upper section mixer inner core（2）The distance between, to adjust
The size of whole blast tube；Lower part mixer inner core（10）The bottom of center cavity is provided with three ribs being uniformly distributed along the circumference
Plate；One end of three floors is intersected in the center of lower part mixer inner core center cavity bottom；In upper section mixer
Core（2）With mixer case（1）Between possessed gap, lower part mixer inner core（10）With mixer case（1）Between
Possessed gap collectively forms pressure stabilizing cavity（12）；The upper section mixer inner core（2）With lower part mixer inner core（10）
Space between end face is the air duct of mixer；The lower part mixer inner core（10）Be provided centrally with current divider
（3）；The current divider（3）For bulb type structure；The current divider（3）Pass through current divider connector（4）It is fastened on lower part
Mixer inner core（10）On center；The current divider（3）Upper end circular arc portion to change air flow line distribution, make its in hair
It penetrates shape and forms mixed uniformly gaseous mixture with combustion gas mixing；The current divider of bulb type structure is by lower part mixer inner core
Center cavity is divided into the gaseous mixture runner of flaring diameter from top to bottom；The mixer is additionally provided with to under after adjustment
The positioning bolt that section mixer inner core is positioned（5）；On the wall surface of the lower part mixer inner core have with it is described
Positioning bolt（5）The location hole of cooperation；The location hole is multilayer setting up and down；Have on the mixer case
The connecting hole passed through to the positioning bolt；The connecting hole is one layer multiple, by making positioning bolt pass through mixing
Connecting hole on device and one layer of multiple location hole cooperation corresponding on lower part mixer inner core wall surface, are realized in different positions
Set the positioning of lower part mixer inner core.
2. a kind of adjustable air-fuel ratio mixer for V-type gas compressor as described in claim 1, it is characterised in that：Institute
The current divider connector stated（4）For metal cylinder hollow structure, outer circle has screw thread, coordinates with current divider end-face helical, inner circle
With the screw thread coordinated with fastening bolt；The current divider connector passes through in fastening bolt and the lower part mixer
Core is fixed, to make current divider be fixed with the lower part mixer inner core.
3. a kind of adjustable air-fuel ratio mixer for V-type gas compressor as described in claim 1, it is characterised in that：Institute
The current divider stated（3）From top to bottom it is followed successively by circular arc portion A（13）, throat B（14）With circular cone contraction section C（15）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875704.2A CN106194505B (en) | 2016-10-08 | 2016-10-08 | A kind of adjustable air-fuel ratio mixer for V-type gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610875704.2A CN106194505B (en) | 2016-10-08 | 2016-10-08 | A kind of adjustable air-fuel ratio mixer for V-type gas compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106194505A CN106194505A (en) | 2016-12-07 |
| CN106194505B true CN106194505B (en) | 2018-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610875704.2A Active CN106194505B (en) | 2016-10-08 | 2016-10-08 | A kind of adjustable air-fuel ratio mixer for V-type gas compressor |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107362704A (en) * | 2017-07-10 | 2017-11-21 | 河南柴油机重工有限责任公司 | A kind of idle air and drawing-off gas blender with concentration automatic control function |
| CN110748440A (en) * | 2018-07-23 | 2020-02-04 | 重庆科克发动机技术有限公司 | Mixer with adjustable air-fuel ratio |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5070851A (en) * | 1990-06-22 | 1991-12-10 | Briggs & Stratton Corp. | Air fuel mixing device for producer gas |
| US5427151A (en) * | 1994-05-18 | 1995-06-27 | Simpson Cleaning Systems, Inc. | Pressure regulating chemical injector valve |
| CN201443762U (en) * | 2009-06-24 | 2010-04-28 | 樊金鑫 | Flame adjusting rotational flow gas-fired combustor |
| CN104075326A (en) * | 2014-05-26 | 2014-10-01 | 大连渤尔科技有限公司 | Venturi gas mixer |
| CN206158885U (en) * | 2016-10-08 | 2017-05-10 | 河南柴油机重工有限责任公司 | A adjustable air -fuel ratio blender for V type gas compressor |
-
2016
- 2016-10-08 CN CN201610875704.2A patent/CN106194505B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5070851A (en) * | 1990-06-22 | 1991-12-10 | Briggs & Stratton Corp. | Air fuel mixing device for producer gas |
| US5427151A (en) * | 1994-05-18 | 1995-06-27 | Simpson Cleaning Systems, Inc. | Pressure regulating chemical injector valve |
| CN201443762U (en) * | 2009-06-24 | 2010-04-28 | 樊金鑫 | Flame adjusting rotational flow gas-fired combustor |
| CN104075326A (en) * | 2014-05-26 | 2014-10-01 | 大连渤尔科技有限公司 | Venturi gas mixer |
| CN206158885U (en) * | 2016-10-08 | 2017-05-10 | 河南柴油机重工有限责任公司 | A adjustable air -fuel ratio blender for V type gas compressor |
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| Publication number | Publication date |
|---|---|
| CN106194505A (en) | 2016-12-07 |
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