CN203586258U - Fuel injection device - Google Patents
Fuel injection device Download PDFInfo
- Publication number
- CN203586258U CN203586258U CN201320717792.5U CN201320717792U CN203586258U CN 203586258 U CN203586258 U CN 203586258U CN 201320717792 U CN201320717792 U CN 201320717792U CN 203586258 U CN203586258 U CN 203586258U
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- China
- Prior art keywords
- fuel
- nozzle
- combustion
- pipe
- air
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- 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.)
- Expired - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims abstract description 239
- 238000002347 injection Methods 0.000 title claims abstract description 29
- 239000007924 injection Substances 0.000 title claims abstract description 29
- 238000002485 combustion reaction Methods 0.000 description 174
- 239000003570 air Substances 0.000 description 112
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000007789 gas Substances 0.000 description 9
- 239000000203 mixture Substances 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 5
- 230000001276 controlling effect Effects 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 239000012080 ambient air Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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Landscapes
- Pressure-Spray And Ultrasonic-Wave- Spray Burners (AREA)
Abstract
The utility model discloses a fuel injection device which comprises a first nozzle, a first fuel supply pipe connected with the first nozzle, a first valve arranged on the first fuel supply pipe, a second nozzle arranged adjacently to the first nozzle, a second fuel supply pipe connected with the first fuel supply pipe, a first branched pipe, a second branched pipe, a second valve and a third valve. The first branched pipe and the second branched pipe are connected with end portions opposite to end portions of the second nozzle of the second fuel supply pipe, the second valve and the third valve which can be opened and closed are arranged on the first branched pipe and the second branched pipe, and a fuel supply source is connected on the first branched pipe and the second branched pipe directly or indirectly through other pipelines. Two piping systems are connected on a high burning nozzle, and a valve used for switching is arranged on each system, so that easiness in switching of fuel supply paths is realized.
Description
Technical field
the utility model relates to a kind of fuel injection device.
Background technology
in prior art, boiler supplies fuel and air to combustion chamber by burner, the fuel ejecting from burner in burning Indoor Combustion.Water in the water pipe that boiler configures in to combustion chamber by the heat that produces in burner combust fuel heats, and produces steam.A kind of fuel injection device that burner comprises burner oil and air fed air feeder.
some boiler can switch caloric value stage by stage.Such as, the burner that can divide carried out multisection type burning that syllogic burning that " high combustion, low burning and stop " syllogic is adjusted fuel is controlled and so on to control, the second fuel flow path that the second fuel valve is housed on its boiler with flow control valve and throttling are housed in the 3rd fuel flow path that connects converge and be connected with nozzle with high combustion afterwards.When boiler is switched to high combustion operation by low burning operation, first open flow control valve and transfer valve, from the 3rd stream to high combustion nozzle feed fuels.Then, after the stipulated time, when closing transfer valve, open the second fuel valve, from second road direction high combustion nozzle feed fuels.
Summary of the invention
the utility model object is: provide a kind of simple in structure, can stablize again a kind of fuel injection device that fuel is provided.
the technical solution of the utility model is: a kind of fuel injection device, comprise the first nozzle, the first fuel feed pipe being connected with described the first nozzle, be configured on described the first fuel feed pipe can switch the first valve, with described the first nozzle disposed adjacent and the second nozzle larger than described the first nozzle diameter, be connected with described second nozzle and than the second larger fuel feed pipe of described the first fuel feed pipe bore, the first branched pipe that the contrary end, end connecting with the described second nozzle of described the second fuel feed pipe connects, the contrary end, end connecting with the described second nozzle of described the second fuel feed pipe connects and second branched pipe larger than described the first branched pipe flow path resistance, be configured on described the first branched pipe can switch second valve, and be configured on described the second branched pipe can switch the 3rd valve.
further, on described the second branched pipe, configure in throttling and connect.
further, on described the first fuel feed pipe, described the first branched pipe and described the second branched pipe, directly or indirectly by other pipelines, connect fuel supply source.
the utility model has the advantages that: the utility model, by connect 2 piping systems on high combustion nozzle, is provided for respectively the valve of switching in each system, realizes the light switching of fuel feed path.In addition, when switching the piping system of feed fuels, can allow the piping system of a side keep the state of fuel supply, the fuel that simultaneously starts opposite side piping system is supplied with.Therefore, can effectively guarantee from the continuous feed fuels of second nozzle, accomplish both simple in structure, again can stable supplying fuel.
Accompanying drawing explanation
below in conjunction with drawings and Examples, the utility model is further described:
fig. 1 is the longitudinal profile schematic diagram of the boiler that the present embodiment is relevant;
fig. 2 is structural representation of the present utility model.
wherein: 10 boilers (burner); 12 combustion chambers (tank body, heat absorption means); 14 air feeders; 16 1 kinds of fuel injection devices; 17 burners; 20 control device; 30 pressure fans; 32 air supply pipes; 34 bellows; 35 air flow circuits; 36 air doors; 38 door driving devices; 40 fuel supply systems (fuel supply source); 42 fuel supply units; 44 nozzle units; 46 high combustions are supplied with section with fuel; 48 low burnings are supplied with section with fuel; 50 nozzles for high combustion (second nozzle); 52 low nozzles (the first nozzle) for burning; 60 fuel feed pipes; 62 first branched pipes; 64 second branched pipes; 65 fuel feed pipes for high combustion (the second fuel feed pipe); 66 supply with adjustment structure; 68 high combustion magnetic valves (the first branched pipe valve); 70 switching solenoid valves (the second branched pipe valve); In 72 throttlings, connect; 73 low fuel feed pipes (the first fuel feed pipe) for burning; 74 low combustion magnetic valves (low burning valve).
The specific embodiment
embodiment:
< boiler >
the boiler of a kind of fuel injection device of outfit of being correlated with regard to the utility model embodiment below describes.As shown in Figure 1, the boiler (burner) 10 that the present embodiment is relevant has combustion chamber (tank body, heat absorption means) 12, air feeder 14, a kind of fuel injection device 16, control device 20.On boiler 10, a part for a part for combustion chamber 12 1 sides of air feeder 14 and combustion chamber 12 1 sides of a kind of fuel injection device 16 forms burner 17.Burner 17 mixes fuel and air be injected into combustion chamber 12 and burns.Suppose that boiler 10 is a kind of circular multitube through-flow boilers.Suppose that the boiler 10 that the present embodiment is relevant can be used the fuel such as the liquid fuels such as gaseous fuel, light oil or heavy oil or fine coal.
one end of air supply pipe 32 connects pressure fan 32, and the other end connects bellows 34.Air supply pipe 32 is supplied to bellows 34 by the combustion air A coming from pressure fan 30.
in addition, air feeder 14 also can be supplied to air supply pipe 32 by a part for 12 combustion product gases of discharging from combustion chamber.That is to say, a part of combustion product gases can be circulated.Air feeder 14, by adjusting the quantity delivered of combustion product gases, can be adjusted the oxygen concentration of the air that is supplied to combustion chamber 12 as one of fuel combustion conditions.
a kind of fuel injection device 16 is supplied with burning F to burner 17.A kind of fuel injection device 16 have fuel supply system (fuel supply source) 40, from fuel supply system 40 supply with the general fuel supply unit 42 of the fuel flow of coming, will from fuel supply unit 42 supply with the fuel that come to combustion chamber 12 nozzle units 44 that spray.The flow of the fuel that fuel supply system 40 has the fuel tank that storage of fuels uses, the carrier structure that fuel is discharged to fuel supply unit 42, supply with to fuel supply unit 42 is adjusted structure etc.Fuel supply system 40 is to fuel supply unit 42 feed fuels.
one end of fuel supply unit 42 connects fuel supply system 40, and the other end connects nozzle unit 44.Fuel supply unit 42 is inserted in the middle of air flow circuit 35, by air flow circuit 35, is surrounded.The front end of nozzle unit 44 is exposed in combustion chamber 12, the 12 interior burner oils to combustion chamber.That is to say, nozzle unit 44 is the same with fuel supply unit 42, by air flow circuit 35, is surrounded.Thus, the fuel ejecting from nozzle unit 44 with from being configured in the fuel that nozzle unit 44 ambient air streams 35 discharge, with air A, mix.
a kind of fuel injection device 16 passes through nozzle unit 44 to the interior injection of air supply pipe 32 by the fuel that is supplied to fuel supply unit 42 from fuel supply system 40.Thus, in air supply pipe 32, pressure fan 30 is supplied with the combustion air of coming and nozzle unit 44 and is supplied with the fuel of coming and mix generation mixture (mist, air and by the mixture of the fuel of corpusculed).About a kind of fuel injection device 16, will be explained hereinafter.
as mentioned above, burner 17 comprises air flow circuit 35 and nozzle unit 44.Particularly, burner 17 has the combustion air A spout part of air flow circuit 35 and the fuel F spout part of nozzle unit 44.Burner 17 is exposed in combustion chamber 12.Burner 17 mutually mixes produced mixture (mist, air and by the mixture of the fuel of corpusculed) and burns in combustion chamber 12 spray the combustion air A coming and the fuel F coming from nozzle unit 44 injections from air flow circuit 35.
the mixture that burned device 17 is ejected into combustion chamber 12 becomes the combustion product gases of high temperature after burner 17 burnings.In this description, combustion product gases represents product after fuel combustion reaction finishes or the fuel in the combustion reaction at least a certain concept in the two.That is to say, combustion product gases can refer to product after fuel combustion reaction finishes and the fuel in fuel reaction simultaneously, also can singly refer to the product after fuel combustion reaction finishes, or singly refer to the fuel in combustion reaction.
< fuel injection device >
next, by Fig. 1 and Fig. 2, with regard to a kind of formation of fuel injection device 16, describe.Above-mentioned a kind of fuel injection device 16 comprises fuel supply system 40, fuel supply unit 42, nozzle unit 44.Nozzle unit 44 comprises nozzle 50 and low burner noz(zle) 52 for high combustion.In the present embodiment, high combustion is equivalent to second nozzle with nozzle 50, and low burning is equivalent to the first nozzle with nozzle 52.High combustion forms jet with nozzle 50 and low burning with nozzle 52, supplies with the fuel of coming out injected from jet.High combustion uses nozzle 52 along air flow quilt the row arrangement of air flow circuit 35 with nozzle 50 and low burning, and jet position is each other adjacent.High combustion is the nozzles of feed fuels F when boiler 10 moves under high combustion pattern with nozzle 50.Low burning is the nozzles of feed fuels F when boiler 10 moves under low combustion mode with nozzle 52.High combustion is slightly different to guarantee spraying more fuel than low burning with nozzle 52 by the shape of nozzle 50.For example, high combustion is larger with the bore of the pipe arrangement of nozzle 52 than low burning with nozzle 50.In addition, high combustion is also used the large of nozzle 52 than low burning with the gross area of the jet of nozzle 50.
the fuel that fuel supply unit 42 is come fuel supply system 40 supplies is supplied to respectively high combustion use nozzle 50 and nozzle 52 for low burning.Fuel supply unit 42 has to high combustion to be supplied with section 46 and with the low burning of nozzle 52 feed fuels, with fuel, supplies with section 48 to low burning with fuel with the high combustion of nozzle 50 feed fuels.Fuel supply unit 42 also has connection high combustion and supplies with the fuel feed pipe 60 of fuel supply section 48 and fuel supply system 40 for section 46/ low burning with fuel.Fuel feed pipe 60 is supplied to fuel supply section 48 for fuel supply section 46 and low burning for high combustion by supply with the fuel F1 coming from fuel supply system 40.
high combustion is supplied with section 46 with fuel and is had the first branched pipe 62, the second branched pipe 64, fuel feed pipe 65 and supply adjustment structure 66 for high combustion.One end of the first branched pipe 62 is connected with fuel feed pipe 62, and the other end is connected with fuel feed pipe 65 with high combustion.One end of the second branched pipe 64 is connected with fuel feed pipe 60, and the other end is connected with fuel feed pipe 65 with high combustion.High combustion is connected with the second branched pipe 64 with the first branched pipe 62 with one end of fuel feed pipe 65, and the other end is connected with nozzle 50 with high combustion.
high combustion is supplied with section 46 and fuel feed pipe 60 and high combustion with being connected with 64 two sections of pipelines of the first branched pipe 62 and the second branched pipe respectively between fuel feed pipe 65 with fuel.High combustion is supplied with section 46 with fuel and merge into 1 pipeline again after being divided into two-way from fuel feed pipe 60 to high combustion with nozzle 50.At this, the sectional area of the first branched pipe 62 to the second branched pipes 64 is larger, and the bore of pipe arrangement (diameter) is also large than the second branched pipe 64.
low burning is supplied with section 48 with fuel and is had fuel feed pipe 73 and low combustion magnetic valve 74 for low burning.Low burning connects fuel feed pipe 60 with one end of fuel feed pipe 73, and the other end connects low nozzle 52 for burning.Low combustion magnetic valve (low burning valve) 74 is arranged on low burning with on fuel feed pipe 73.Low combustion magnetic valve 74 be can switch magnetic valve.Low burning is supplied with section 48 after low burning magnetic valve 74 is opened with fuel, comes and with the fuel F4 of fuel feed pipe 73, be supplied to low nozzle 52 for burning by low burning by supplying with from fuel feed pipe 60; After low combustion magnetic valve 74 cuts out, low burning is cut off with the fuel circulation in fuel feed pipe 73, and the fuel supply from fuel feed pipe 60 to low burning with nozzle 52 stops.
and boiler 10 and a kind of fuel injection device 16, when switch mode, are exactly when high combustion magnetic valve switches between Kai Heguan specifically, can allow high combustion magnetic valve 68 and switching solenoid valve 70 stay open state certain hour.Thus, the state of can maintenance supplying with to the fuel of high combustion nozzle 50 carries out opening or closing of high combustion magnetic valve 68 simultaneously.That is to say, when height combustion magnetic valve 68 will, by before opening and switching to pass, can first be opened switching solenoid valve 70, thereby guarantee still can use from switching solenoid valve 70 to high combustion nozzle 50 feed fuels after high combustion magnetic valve 68 has just cut out.Identical principle, before height combustion magnetic valve 68 will be switched to out by pass, can first open switching solenoid valve 70, thereby the high combustion of assurance magnetic valve 68 is first used nozzle 50 feed fuels from switching solenoid valve 70 to high combustion before will opening.Thus, no matter how magnetic valve opens or closes when pattern is switched, can guarantee the state that high combustion is supplied with in fuel with nozzle 50, thereby keep well the flame status of high combustion nozzle 50.
in addition, the bore of the second branched pipe 64 of boiler 10 and a kind of fuel injection device 16 is less than the first branched pipe 64, the mobile phase of fuel is to difficulty, even so work as, height fires magnetic valve 68 and switching solenoid valve 70 is both opened, simultaneously by the first branched pipe 62 and the second branched pipe 64 feed fuels, because the fuel of second branched pipe 64 of flowing through is restricted, therefore can effectively controls and be supplied to the increase of the fuel of nozzle 50 for high combustion.Moreover, by installing in throttling and connect 72 on the second branched pipe 64, allow fuel in being difficult for the state of circulation, thereby can limit better the fuel circulation in the second branched pipe 64 during feed fuels at the first branched pipe 62 and the second branched pipe 64 simultaneously.Thus, even if work as high combustion magnetic valve 68 and switching solenoid valve 70, all open feed fuels, fuel feed when its fuel feed and high combustion pattern can not have much difference yet, that is to say that not having superfluous fuel is supplied to nozzle 50 for high combustion, thereby can effectively suppress the harmful effect to high combustion nozzle 50.
and, because boiler 10 and a kind of fuel injection device 16 just can switch feed system by being arranged on height combustion magnetic valve 68 on the first branched pipe 64 and the first branched pipe 62 and the switch of switching solenoid valve 70, thus can allow device be configured simplify.
in addition, the utility model is also not only confined to above-described embodiment, within not departing from the scope of utility model aim, can carry out various distortion.High combustion magnetic valve 68, switching solenoid valve 70, low combustion magnetic valve 74 can be the open and close type valves that only can open or close, and can be also the control valves of adjusting aperture.
Claims (3)
1. a fuel injection device, it is characterized in that: comprise the first nozzle, the first fuel feed pipe being connected with described the first nozzle, be configured on described the first fuel feed pipe can switch the first valve, with described the first nozzle disposed adjacent and the second nozzle larger than described the first nozzle diameter, be connected with described second nozzle and than the second larger fuel feed pipe of described the first fuel feed pipe bore, the first branched pipe that the contrary end, end connecting with the described second nozzle of described the second fuel feed pipe connects, the contrary end, end connecting with the described second nozzle of described the second fuel feed pipe connects and second branched pipe larger than described the first branched pipe flow path resistance, be configured on described the first branched pipe can switch second valve, and be configured on described the second branched pipe can switch the 3rd valve.
2. a kind of fuel injection device according to claim 1, is characterized in that: on described the second branched pipe, configure in throttling and connect.
3. a kind of fuel injection device according to claim 1, is characterized in that: on described the first fuel feed pipe, described the first branched pipe and described the second branched pipe, directly or indirectly by other pipelines, connect fuel supply source.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201320717792.5U CN203586258U (en) | 2013-11-14 | 2013-11-14 | Fuel injection device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201320717792.5U CN203586258U (en) | 2013-11-14 | 2013-11-14 | Fuel injection device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN203586258U true CN203586258U (en) | 2014-05-07 |
Family
ID=50584169
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201320717792.5U Expired - Lifetime CN203586258U (en) | 2013-11-14 | 2013-11-14 | Fuel injection device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN203586258U (en) |
-
2013
- 2013-11-14 CN CN201320717792.5U patent/CN203586258U/en not_active Expired - Lifetime
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CP03 | Change of name, title or address | ||
CP03 | Change of name, title or address |
Address after: 215024 Jiangsu province Suzhou Industrial Park South Lane 8 Patentee after: MIURA INDUSTRIES (CHINA) CO.,LTD. Address before: 215024 Jiangsu Province, Suzhou City Industrial Park South Lane 8 Patentee before: Miura Industries (Suzhou) Co.,Ltd. |
|
CX01 | Expiry of patent term | ||
CX01 | Expiry of patent term |
Granted publication date: 20140507 |