CN103254940A - A system and a method for cooling a fuel injector - Google Patents
A system and a method for cooling a fuel injector Download PDFInfo
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- CN103254940A CN103254940A CN2013100487164A CN201310048716A CN103254940A CN 103254940 A CN103254940 A CN 103254940A CN 2013100487164 A CN2013100487164 A CN 2013100487164A CN 201310048716 A CN201310048716 A CN 201310048716A CN 103254940 A CN103254940 A CN 103254940A
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- fuel injector
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- coolant room
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
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Abstract
The invention relates to a system and a method for cooling a fuel injector. The system comprises a gasifier and the gasification fuel injector which comprises a tail end part, a coolant chamber arranged in the tail end part and a plurality of internal structures arranged on the inner surface of the coolant chamber. The coolant chamber is configured to enable coolant to flow through the tail end part of the gasification fuel injector.
Description
The cross reference of related application
The application is that the exercise question of submitting on June 17th, 2011 is the U.S. sequence No.13/162 of " FEED INJECTOR FOR GASIFICATION SYSTEM ", 623 part continuation application.U.S. sequence No.13/162,623 all are incorporated herein by reference.
Technical field
Theme disclosed herein relates to fuel injector, and more particularly, relates to the fuel injector for gasifier.
Background technology
Multiple firing system uses fuel injector to inject fuel in the combustion chamber.For example, integrated gasification combined cycle plants (IGCC) power generation assembly comprises the gasifier with one or more fuel injector.Fuel injector is fed to fuel (such as, organic feed) in the gasifier to generate synthetic gas together with oxygen and steam.Substantially, burning takes place in the fuel injector downstream.Yet, can reduce and/or shorten life-span of fuel injector from the vicinity of burned flame and/or heat, if particularly fuel injector is above certain temperature.For example, fuel injector can stand towards comparatively high temps terminal and/or that increase near other position of flame.Unfortunately, existing fuel injector can stand by too early wearing and tearing heavily stressed and/or that strain causes, and this heavily stressed and/or strain is caused by the high temperature in the gasifier.
Summary of the invention
Be summarised on the scope some embodiment that the present invention with initial prescription matches below.These embodiment are not intended to limit the scope of the present invention of prescription, but on the contrary, these embodiment only are intended to provide the brief overview of possibility form of the present invention.In fact, the present invention can comprise can be similar or different with the embodiment that proposes below various forms.
In first example, a kind of system comprises gasifier and gasification fuel injector.The vaporising fuel injector can comprise terminal portions, be arranged in the coolant room in the terminal portions, and is arranged in the many internal structures on the internal surface of coolant room.
In second example, a kind of system comprises gasifier or reactor and fuel injector.Fuel injector can comprise the fuel passage, the oxygen path that is configured to spray oxygen that are configured to burner oil, can comprise the annular coolant room of inner annular wall and annular wall, and is arranged in the many internal structures on the internal surface of inner annular wall or annular wall.
In the 3rd example, a kind of method comprise with from the fuel injection that is arranged in the fuel passage in the fuel injector in reaction chamber, to be ejected in the reaction chamber from the oxygen that is arranged in the oxygen path in the fuel injector, refrigerant be flow through be arranged in the coolant room in the terminal portions of fuel injector.Coolant room comprises the many internal structures on the internal surface that is arranged in coolant room.
Description of drawings
When reading following detailed description with reference to the accompanying drawings, will understand these and other feature, aspect and advantage of the present invention better, wherein, same be marked at the same parts of expression in institute's drawings attached, wherein:
Fig. 1 is the side cross-sectional view of gasifier that comprises the example of fuel injector;
Fig. 2 is the partial axial section of the example of the fuel injector of Fig. 1 of intercepting in the online 2-2, and it shows about the coaxial many internal structures of the axial axis of fuel injector;
Fig. 3 is the partial axial section of the example of the fuel injector of Fig. 1 of intercepting in the online 2-2, and it shows many internal structures of aliging with longitudinal axis and/or the axial axis of fuel injector;
Fig. 4 is the partial axial section of the example of the fuel injector of Fig. 1 of intercepting in the online 2-2, its show many internal structures of aliging with the axial axis of fuel injector first part and with the second section of many internal structures of the circumferential axis (for example, coaxial about longitudinal axis) of fuel injector alignment;
Fig. 5 is the partial cross section of the example of the fuel injector of Fig. 1 of intercepting in the online 2-2, and it shows the many internal structures that are configured to about the coaxial projection of the axial axis of fuel injector; And
Fig. 6 is the partial axial section of example with fuel injector of the coolant room that comprises many internal structures.
List of parts
180 fuel injectors
150 axial direction dues
152 radial direction
154 circumferential direction
156 capsules
158 first ends
160 the second ends
162 middle portions
164 roofs
166 diapires
168 sidewalls
170 thermal barrier coatings
172 wall assemblies
174 outsides
176 inside
178 vaporizers
180 fuel injectors
186 longitudinal axis
187 outlets
188 distances
190 jet axis
194 arrows
196 downward directions
204 outlet axis
216 upstream sides
218 ends
220 coolant room
222 inwalls
224 outer walls
226 outside surfaces
228 internal surfaces
230 outside surfaces
232 internal surfaces
234 internal structures
236 bow-shaped recess
237 juts
238 degree of depth
239 wall thickness
240 width
242 separating distances
244 ring edges
246 external structures
248 radial grooves
249 juts
250 degree of depth
252 width
254 separating distances
256 first parts
258 second sections
280 annular protrusions
281 recessed portions
282 height
284 width
290 projectioies
291 recesses
292 height
294 width
296 separating distances
310 oxygen
312 first oxygen paths
314 fuel
316 fuel passage
318 second oxygen paths
320 spiral coil cooling tubes.
Embodiment
Will be described below one or more specific embodiment of the application.For the simple and clear description of these embodiment is provided, actual all features of implementing can not described in specification sheets.Be to be understood that, in any this actual exploitation of implementing, as in any engineering or design item, must make the specific purpose that many particular implementations determine to realize the developer, such as meeting the relevant and commercial relevant constraint of system, this can change to another enforcement from an enforcement.In addition, it is complicated and consuming time to should be appreciated that this development effort can be, but for benefiting from technician of the present disclosure, will be the routine work of design, making and manufacturing.
When the element of the various embodiment that introduce the application, there be one or more in the element in article " ", " one ", the expression of " being somebody's turn to do " and " described " intention.Term " comprises ", " comprising " and " having " be intended that and comprise, and can there be the add ons except the element of listing in expression.
Firing system can utilize fuel injector with fuel and optional other fluid jet in the combustion chamber.For example, the IGCC power generation assembly can have gasifier, and it comprises one or more vaporising fuel injector.Because burning occurs near the end of fuel injector, so end can be exposed to the temperature up to about 1,300 degree centigrade (C).In addition, hot combustion gas can be towards fuel injector recirculation back.Even injector is made by the material that is designed for high temperature especially, this high temperature can make fuel injector degenerate.Therefore, different method of cooling can be used for prolonging the life-span of fuel injector.For example, the fuel injector end can have the integrated coolant chamber, and refrigerant can flow through this integrated coolant chamber.Yet when making in this way under the situation that is not having disclosed cooling technology, the outside surface of fuel injector can be exposed to the recycle gas of heat, and the internal surface of fuel injector can contact with refrigerant.For example, the temperature of refrigerant can be about 40 ℃, thereby causes about 1, the 260 ℃ temperature difference from the outside surface of fuel injector to internal surface.This big thermograde can cause near the terminal crackle of fuel injector.Particularly, high temperature and temperature fluctuation can cause near terminal radial cracking.In addition, the high adaptability to changes that is caused by high-temperature gradient can cause circumferential crack.The thicker refrigerant locular wall that is designed for increased intensity can stop and help the heat passage of big thermograde and crackle.This crackle can shorten the life-span of fuel injector.
In order to address these problems, in the various examples that are described below, fuel injector comprises the many internal structures on the internal surface that is arranged in annular coolant room.Many internal structures can cause the turbulent flow of the refrigerant that flows through annular coolant room.By causing the turbulent flow of refrigerant, increase across the heat passage of annular refrigerant locular wall, reduce the thermograde across wall thus.Many internal structures also increase the surface area of the internal surface of annular coolant room, increase the convective heat transfer across locular wall thus.By increasing heat passage across wall, can reduce across the thermograde of (or passing) wall.Many internal structures and then can help reduce the thermal stresses in the annular coolant room, and increase the flexibility of annular coolant room.The thermograde that reduces, the stress that reduces and increased flexibility and the strain that reduces can help to prolong by other degeneration of the formation that reduces thermal crack and/or frequency and fuel injector the life-span of fuel injector.In addition, with many internal structures make an addition to annular coolant room can be mechanically for simple, and can not promote to flow through the excess pressure loss of the refrigerant of annular cooling chamber.
Turn to accompanying drawing now, Fig. 1 is the side cross-sectional view of gasifier 106 that comprises the example of fuel injector 180.In other example, fuel injector 180 can be arranged in the allied equipment, this allied equipment such as but be not subject to gas turbine engine, combustion engine, firing system, boiler, reactor, burner or their any combination.As being discussed in detail below, the various examples of fuel injector 180 can comprise the many internal structures on the internal surface of the annular coolant room that is arranged in fuel injector 180.Gasifier 106 can have axial axis or axial direction due 150, longitudinal axis or radial direction 152, and circumferential axis or circumferential direction 154.Gasifier 106 comprises the capsule 156 that is also referred to as shell, and capsule 156 usefulness act on housing or the shell of gasifier 106.Capsule 156 comprises first end 158 and the second end 160.Middle portion 162 is limited by the section of capsule 156, and this section is axially between first end 158 and the second end 160.First end 158 and the second end 160 comprise cheese roof 164 and trilateral (for example, taper) diapire 166 respectively.150 the sidewall 168 (for example, annular sidewall) of paralleling to the axis is arranged in the middle portion 162 between roof 164 and the diapire 166.
The example that illustrates also comprises the thermal barrier coatings 170 that is arranged in capsule 156 inside with one heart.Thermal barrier coatings 170 and capsule 156 form wall assembly 172, and it makes the outside 174 of gasifier 106 separate with the inside 176 of gasifier 106.Inner 176 comprise vaporizer 178 or combustion chamber, and wherein, pyrolytic decomposition, burning, gasification or their combination can take place.Wall assembly 172 is configured to stop heat passage and gaseous constituent leakage of 176 to outside 174 internally between pneumatolytic stage.In addition, thermal barrier coatings 170 can be configured to the surface temperature of capsule 156 is remained in the desired temperatures scope.Therefore, thermal barrier coatings 170 can comprise passive protection, initiatively cooling, or their combination.For example, thermal barrier coatings 170 or fire resistant heat preserving lining can be made by any material that keeps its predetermined physical properties and chemical property after being exposed to high temperature.
In the example shown in Figure 1, fuel injector 180 is arranged in the roof 164 of first end 158 of capsule 156.Fuel injector 180 is from exporting 187 offset or dishes 188 longitudinally, and comprises jet axis 190, and it determines to come from the cardinal principle orientation of the stream of fuel injector 180.Fuel injector 180 can be configured to fuel, oxygen (for example, air or any oxygen-containing mixture), cooling gas (for example, carbonic acid gas, nitrogen or anti-combustion gas body), or the mixture of fuel, oxygen and cooling gas is ejected in the vaporizer 178.For example, fuel injector 180 can spray the fuel that is carbon containing feed form, such as, coal, oil or biomass.In fact, fuel injector 180 can spray any material (for example, organic materials is such as timber or Plastic wastes) that is suitable for producing via gasification synthesis gas or synthetic gas.In some instances, fuel can be pulp slurry, such as coal slurry.In other example, fuel injector 180 can spray independent or with oxygen and/or the steam of the controlled quatity of the fuel fabrication that is fit to.In particular instance, fuel injector 180 can comprise one or more path.For example, fuel injector 180 can comprise one or more fuel passage of burner oil and one or more oxygen path of injection oxygen.
In the example that illustrates, jet axis 190 parallels to the axis 150, and perpendicular to the longitudinal axis 152 of gasifier 106.In other words, jet axis 190 is parallel to longitudinal axis 186.This feature has following effect, that is, and during use will be along passing vaporizer 178 as the cardinal principle downward direction (for example, downstream flow direction) with arrow 194 indications from the fluid stream guiding that fuel injector 180 occurs.In some instances, jet axis 190 bootable one-tenth with about 0 the degree to 45 the degree, 0 the degree to 30 the degree, 0 the degree to 20 the degree or 0 the degree to 10 the degree between angle away from longitudinal axis 186.In addition, some example of fuel injector 180 can provide the spraying of dispersing, and for example, the fluid stream that comes from fuel injector 180 can be along outwards dispersing towards sidewall 168 as the cardinal principle downward direction (for example, downstream flow direction) of indicating with Reference numeral 196.
Illustrating in the example of gasifier 106, the synthetic gas of generation occurs from gasifier 106 via outlet 187 along the path that is limited by outlet axis 204 substantially.In other words, synthetic gas leaves gasifier 106 via the position in the diapire 166 of gasifier 106.Yet, should be noted that gasifier designs disclosed herein can use with multiple other gasification system, wherein, outlet is not arranged in the diapire.For example, disclosed example can use in conjunction with the flow type pump with injection gasifier.In this example, the flow direction that passes vaporizer 178 can be upward through gasifier 106, that is, and and along the direction opposite with arrow 194.In these systems, the synthetic gas of generation can leave on the roof 164 that is positioned at gasifier 106 or near outlet, and slag can leave by diapire 166.For other example, disclosed example can use in fluidized-bed gasifier.Similarly, because flow direction makes progress substantially, so the outlet in this device can be positioned near the roof 164 of gasifier 106.
Fig. 2 is the partial axial section of the fuel injector 180 of Fig. 1 of intercepting in the online 2-2 according to example.As shown in Figure 2, longitudinal axis 186 passes the center of fuel injector 180, and aligns with axial axis 150.Fuel injector 180 has upstream side 216, and feed, oxygen, cooling gas and other material can come from upstream side 216.It is terminal 218 that fuel injector 180 also has, 218 places endways, and feed, oxygen, cooling gas and other material can leave.Therefore, terminal 218 for being used for the outlet of material.As shown in Figure 2, fuel injector 180 comprises the annular coolant room 220 that is arranged in terminal 218.Refrigerant (for example, liquid and/or gas) can flow through annular coolant room 220 to help cooling terminal 218.The example of refrigerant is including but not limited to water, steam, carbonic acid gas and nitrogen.Yet refrigerant can comprise suitable coolant gas, coolant liquid, coolant mixture, or their any combination.Because each in these materials has different heat transfer characteristics, so the special cooling that special refrigerant can be depending on fuel injector 180 requires and selectes.By transporting from fuel injector 180 from hot burning gas bulk absorption heat and with heat, annular coolant room 220 helps protection terminal 218 to avoid the high temperature degeneration.
As shown in Figure 2, many internal structures 234 can be arranged on the internal surface 232 of annular wall 224.In the example that illustrates, many internal structures 234 comprise about longitudinal axis 186 coaxial bow-shaped recess 236 and jut 237.In other words, annular recesses 236 and annular projection part 237 can be along circumferential direction 154 around longitudinal axis 186.In other example, annular recesses 236 and annular projection part 237 can be separate or be connected to each other (for example, along circumferential direction 154 and axial direction due 150 both around longitudinal axis 186 spirals).In the example that illustrates, groove 236 has the semi-circular section shape.In other example, the cross-sectional shape of groove 236 can be a round part, ellipse, square, rectangle, Polygons or their any combination.Particularly, the cross-sectional shape of groove 236 can be selected to the turbulent flow that causes the refrigerant that flows through annular coolant room 220.For example, because refrigerant moves through in groove 236 and the jut 237 each, so in axial direction 150 refrigerants that flow through annular coolant room 220 become turbulent flow.In addition, groove 236 can be limited by the degree of depth 238 with respect to jut 237.Groove 236 with big degree of depth 238 can cause more refrigerant turbulent flows than the groove 236 with less degree of depth 238.In addition, the degree of depth 238 can be less than annular wall thickness 239.Therefore, groove 236 does not extend through annular wall 224.In some instances, the degree of depth 238 outside annular wall thickness 239 about 20% to 80%, 30% to 70% or 40% to 50% between.In addition, groove 236 can be limited by width 240, and width 240 can be selected to provides the refrigerant of desired amount turbulent flow.In the groove 236 each can be separated with separating distance 242 (for example, the width of jut 237), and separating distance 242 also can be selected to provides the refrigerant of desired amount turbulent flow.In some instances, groove 236 and jut 237 can be along all or part of layouts of the internal surface 232 of annular wall 224.In other example, groove 236 and jut 237 can be along all or part of layouts of the internal surface 228 of inner annular wall 222.In other example, groove 236 and jut 237 can be along internal surface 228 and 232 both all or part of layouts.In addition, the shape of groove 236 and jut 237, the degree of depth 238, width 240 and separating distance 242 can be adjusted to the pressure drop that will flow through the refrigerant of annular coolant room 220 and remain on below the threshold value.Groove 236 shown in Fig. 2 and jut 237 also can increase or both surface areas in internal surface 228 and 232, and this can increase across one in inner annular wall 222 and the annular wall 224 or both convective heat transfer.In addition, groove 236 and jut 237 can help to reduce the thermograde across the thickness 239 of annular wall 224 or inner annular wall 222, help to reduce thermal stresses and the heat cracking of fuel injector 180 thus.
As shown in Figure 2, in some instances, fuel injector 180 can comprise the many external structures 246 on the outside surface 230 that is arranged in annular wall 224.In other example, many external structures 246 can be arranged in outside surface 226 and 230 one or both.Particularly, many external structures 246 can be in axial direction 150 and/or radial direction 152 extend from the ring edge 244 of the cross part that is formed on outside surface 226 and 230.In other words, each in many external structures 246 can with the planar registration (or angled) of the longitudinal axis 152 of passing fuel injector 180 and axial axis 150.In other example, many external structures 246 can be alignd with the longitudinal axis 152 of fuel injector 180 angledly.In the example that illustrates, many external structures 246 can comprise radial groove 248 and jut 249.The same with annular recesses 236, the cross-sectional shape of radial groove 248 can comprise a round part, ellipse, square, rectangle, Polygons or their any combination.In addition, radial groove 248 can be limited by the degree of depth 250 and width 252, the degree of depth 250 and width 252 can be selected to the stress that helps to reduce in terminal 218, reduce in terminal 218 strain, increase terminal 218 Heat transfer coefficient, increase terminal 218 flexibility, or their any combination.In other words, radial groove 248 can help to reduce stress and/or the strain along circumferential direction 154, reduces cracking and other degeneration of terminal 218 thus.In addition, radial groove 248 and jut 249 are bootable from the terminal 218 material streams that leave, and help to form the fluid jet mode of the herring-bone type (or V-arrangement type) in fuel injector 180 downstreams thus.In addition, radial groove 248 can separate with separating distance 254 (for example, the width of jut 249), and separating distance 254 can be selected to adjustment from the mode of terminal 218 materials that leave.For example, the first part 256 of flowing through the material of fuel injector 180 can flow in the space between groove 248, and the second section 258 of material can flow through radial groove 248.The speed that flows through the material of first part 256 and second section 258 can differ from one another, and forms the fluid jet mode of herring-bone type (or V-arrangement type) thus.Groove 248 shown in Fig. 2 and jut 249 also can increase or both surface areas in outside surface 226 and 230, and this can increase across one in inner annular wall 222 and the annular wall 224 or both convective heat transfer.In addition, groove 248 and jut 249 can help to reduce the thermograde across the thickness 239 of annular wall 224 or inner annular wall 222, help to reduce thermal stresses and the heat cracking of fuel injector 180 thus.
Fig. 3 is the partial axial section of the fuel injector 180 of Fig. 1 of intercepting in the online 2-2 according to example.In the example that illustrates, each in many internal structures 234 is alignd with longitudinal axis 152 and/or axial axis 150.Therefore, many internal structures 234 can cause that the refrigerant that flows through annular coolant room 220 is along the turbulent flow around the circumferential direction 154 of axis 186.In other example, many internal structures 234 can be alignd with the longitudinal axis 152 of fuel injector 180 angledly.In other words, many internal structures 234 can be angled with the plane of the longitudinal axis 152 of passing fuel injector 180 and axial axis 150.In other example, many internal structures 234 can be arranged in internal surface 228 and 232 one or both.In addition, many external structures 246 are arc, and coaxial about axial axis 150.In some instances, around the annular recesses 248 of longitudinal axis 186 and annular projection part 249 can be separate or be connected to each other (for example, all in axial direction 150 and circumferential direction 154 spiral groove 248 and the spiral protrusion part 249 of extending).Therefore, many external structures 246 can cause the turbulent flow of the hot combustion gas that flows along the outside surface 230 of annular wall 224, increase the Heat transfer coefficient of annular wall 224 thus.In other example, many external structures 246 can be arranged in outside surface 226 and 230 one or both.Groove 236 shown in Fig. 3 and 248 and jut 237 and 249 also can increase internal surface 228 and 232 and/or the surface area of outside surface 226 and 230, this can increase across one in inner annular wall 222 and the annular wall 224 or both convective heat transfer.In addition, groove 236 and 248 and jut 237 and 249 can help to reduce thermograde across the thickness 239 of annular wall 224 or inner annular wall 222, help to reduce thermal stresses and the heat cracking of fuel injector 180 thus.
Fig. 4 is the partial axial section of the fuel injector 180 of Fig. 1 of intercepting in the online 2-2 according to example.As shown in Figure 4, fuel injector 180 comprises the many internal structures 234 that are arranged on the internal surface 232.Particularly, many internal structures 234 can be formed by, the groove 236 that intersect 154 that align with axial axis 150 and circumferential axis and the two-part cross part of jut 237.In other words, the first part 272 of groove 236 can align with axial axis 150, and the second section 274 of groove 236 can be along circumferential direction 154 around axial axis 154.The second section 274 of groove 236 also can be arc, and coaxial about axial axis 150.Therefore, many internal structures 234 can be formed on the uncrossed place of groove 236.As shown in Figure 4, internal surface 232 has waffle iron profile or grid profile.In other words, many internal structures 234 can be described as the projection of internal surface 232 or the grid of projection.Internal surface 232 also can be described as to have and is oriented first group of internal structure 234 and the second group of internal structure 234 that intersects each other.This structure of internal surface 232 can cause the additional turbulence of the refrigerant that flows through annular coolant room 220.In other example, many internal structures 234 can be alignd with the circumferential axis 154 of axial axis 150, longitudinal axis 152 or fuel injector 180 angledly.Substantially, many internal structures 234 can comprise at least one in groove, passage, slit, fin, projection, projection or their any combination.As shown in Figure 4, each in the internal structure 234 has the shape of square or rectangle.Yet in other example, many internal structures 234 can be depending on groove 236 and have other shape with aliging of axial axis 150.In other example, many internal structures 234 can be arranged on internal surface 228 and 232 one or both.Groove 236 shown in Fig. 4 and jut 237 also can increase or both surface areas in internal surface 228 and 232, and this can increase across one in inner annular wall 222 and the annular wall 224 or both convective heat transfer.In addition, groove 236 and jut 237 can help to reduce the thermograde across the thickness 239 of annular wall 224 or inner annular wall 222, help to reduce thermal stresses and the heat cracking of fuel injector 180 thus.
Fig. 5 is the partial axial section of the fuel injector 180 of Fig. 1 of intercepting in the online 2-2 according to example.As shown in Figure 5, fuel injector 180 comprises many internal structures 234, and it is configured to along annular protrusion 280 and the recessed portion 281 of 220 extensions of annular coolant room.The cross-sectional shape of each in the annular protrusion 280 can comprise a round part, ellipse, square, rectangle, Polygons or their any combination.In the annular protrusion 280 each can be limited by height 282 and width 284, and height 282 and width 284 can be selected to the turbulent flow of the desired amount that the refrigerant that flows through annular coolant room 220 is provided.In addition, each in the annular protrusion 280 can be separated with separating distance 286 (for example, the width of recessed portion 281).As shown in Figure 5, annular protrusion 280 and recessed portion 281 along circumferential direction 154 around longitudinal axis 186.In other example, many internal structures 234 can be alignd with axial axis 152, perhaps align with longitudinal axis 152 or axial axis 150 angledly.In other example, many internal structures 234 can be arranged in internal surface 228 and 232 one or both.In other example, many internal structures 234 can comprise many elongate grooves 236 and/or elongated protrusion part 249, the grid of groove 281 and/or projection 280, or their any combination.
In addition, the fuel injector shown in Fig. 5 180 comprises the many external structures 246 that are configured to projection 290 and recess 291.Particularly, projection 290 can be alignd with axial axis 150.In the projection 290 each can be limited by height 292 and width 294, and height 292 and width 294 can be selected to the Heat transfer coefficient of the expectation that annular wall 224 is provided.In addition, projection 290 can be separated from one another with separating distance 296 (for example, the width of recess 291).In other example, projection 290 can be annular and coaxial about axial axis 150, perhaps aligns with longitudinal axis 152 or axial axis 150 angledly.Projection 290 can help to cause the turbulent flow of the hot combustion gas that flows along the outside surface 230 of annular wall 224, increases the Heat transfer coefficient of annular wall 224 thus.Projection 290 shown in Fig. 5 and recess 291 also can increase internal surface 228 and 232 and/or the surface area of outside surface 226 and 230, and this can increase across one in inner annular wall 222 and the annular wall 224 or both convective heat transfer.In addition, projection 290 and recess 291 can help to reduce the thermograde across the thickness 239 of annular wall 224 or inner annular wall 222, help to reduce thermal stresses and the heat cracking of fuel injector 180 thus.
Fig. 6 is the partial axial section of example with fuel injector 180 of annular coolant room 220.As shown in Figure 6, annular coolant room 220 comprises integrated with terminal 218 or becomes one many bow-shaped recess 236 and jut 237.In addition, fuel injector 180 comprises many paths.Though will describe a kind of configuration of path, other configuration is depended on the requirement of special firing system and is possible.Particularly, the penetralia material that passes fuel injector 180 is oxygen 310, and oxygen 310 guides to terminal 218 by the first oxygen path 312.The burning that the first oxygen path, 312 supply oxygen 310 are used in end 218 downstreams of fuel injector 180.Oxygen 310 can be including but not limited to pure oxygen, oxygen mixture and air.Close outermost material is fuel 314, and fuel 314 guides to terminal 218 by fuel passage 316.Therefore, fuel passage 316 is surrounded the first oxygen path 312 with coaxial or concentric arrangement.Fuel 314 can comprise dried fuel, slurry fuel, liquid fuel or their any combination.Fuel passage 316 is only at the oxygen 310 downstreams guiding fuel 314 from the first oxygen path 312, to strengthen the mixing of fuel and oxygen.Close outermost material is oxygen 310, and oxygen 310 guides to the end 218 of fuel injector 180 by the second oxygen path 318.Therefore, the second oxygen path 318 surrounds fuel passage 316 with coaxial or concentric arrangement.The second oxygen path 318 can guide to oxygen 310 fuel 314 and mixture from the oxygen of the first oxygen path 312, to produce the fine spray that is used for active combustion.Oxygen 310 from the second oxygen path 318 also can be including but not limited to pure oxygen, oxygen mixture and air.As shown in Figure 6, annular coolant room 220 can be formed near the end 218 of fuel injector 180 the second oxygen path.In some instances, path 312,316 and 318 can be assembled or angled towards longitudinal axis 186, and is terminal 218 so that material is guided to, and annular coolant room 220 can be arranged near terminal 218 path 312,316 and 318 the convergence portion.In other example, refrigerant can enter near the spiral coil cooling tube 320 the upstream side 216 of fuel injector 180.Then, coolant circulating is passed coil pipe 320, enters near terminal 218 annular coolant room 220 up to it.Therefore, spiral coil cooling tube 320 can be arranged in the outside of annular coolant room 220 and fuel injector 180.
As mentioned above, some example of fuel injector 180 can comprise terminal 218, annular coolant room 220 and be arranged in many internal structures 234 on the internal surface 228 and 232 at annular coolant room 220 places.Many internal structures 234 can cause the turbulent flow of the refrigerant that flows through annular coolant room 220, improve heat passage across annular wall 224 thus.Across the improvement of annular wall 224 is heat passage can be by reducing stress, reduce strain and/or increasing the life-span that terminal 218 flexibility helps to prolong fuel injector 180.Therefore, the formation of the crackle in the end 218 can reduce.In other example, fuel injector 180 can comprise the many external structures 246 on the outside surface 226 and 230 that is arranged in annular coolant room 220.Many external structures 246 also can help to prolong the life-span of fuel injector 180.
This written description use-case is with open the present invention's (comprising optimal mode), and makes those skilled in the art can put into practice the present invention's (comprise and make and use any device or system and carry out any method of incorporating into).Patentable scope of the present invention is defined by the claims, and can comprise other examples that those skilled in the art expect.If these other examples have not different with the literal language of claim structural elements, if perhaps these other examples comprise the equivalent structure element that does not have marked difference with the literal language of claim, then these other example intentions within the scope of the claims.
Claims (18)
1. system, it comprises:
Gasifier; And
The vaporising fuel injector, it comprises:
Terminal portions;
Be arranged in the coolant room in the described terminal portions; And
Be arranged in a plurality of internal structures on the internal surface of described coolant room.
2. system according to claim 1, it is characterized in that, comprise a plurality of external structures on the outside surface that is arranged in described coolant room, wherein, described a plurality of external structure or described a plurality of internal structure be configured to reduce in the described terminal portions stress, reduce in the described terminal portions strain, increase the Heat transfer coefficient of described terminal portions or increase the flexibility of described terminal portions, or their any combination, perhaps wherein, described a plurality of internal structure is configured to cause the turbulent flow of the refrigerant that flows through described coolant room.
3. system according to claim 1 is characterized in that, described a plurality of internal structures are along extending with respect to the radial direction of the central axis of described vaporising fuel injector or axial direction due or aliging with it.
4. system according to claim 1 is characterized in that, described a plurality of internal structures edge is extended around the circumferential direction of the central axis of described vaporising fuel injector or alignd with it.
5. system according to claim 1 is characterized in that, described a plurality of internal structures comprise and are oriented first group of internal structure and the second group of internal structure that intersects each other.
6. system according to claim 1 is characterized in that, each in described a plurality of internal structures comprises at least one in recess, projection or their any combination.
7. system according to claim 1 is characterized in that, described a plurality of internal structures comprise the grid of a plurality of elongate grooves and/or elongated protrusion part, recess and/or projection, or their combination.
8. system, it comprises:
Reactor or gasifier; And
Fuel injector, it comprises:
Be configured to the fuel passage of burner oil;
Be configured to spray the oxygen path of oxygen;
The annular coolant room that comprises inner annular wall and annular wall; And
Be arranged in a plurality of internal structures on the internal surface of described inner annular wall or described annular wall.
9. system according to claim 8, it is characterized in that, comprise a plurality of external structures on the outside surface that is arranged in described inner annular wall or described annular wall, wherein, described a plurality of external structure or described a plurality of internal structure be configured to reduce in the described fuel injector stress, reduce in the described fuel injector strain, increase the Heat transfer coefficient of terminal portions or increase the flexibility of described fuel injector, or their any combination, perhaps wherein, described a plurality of internal structure is configured to cause the turbulent flow of the refrigerant that flows through described annular coolant room.
10. system according to claim 8 is characterized in that, described a plurality of internal structures are along extending with respect to the radial direction of the central axis of described fuel injector or axial direction due or aliging with it.
11. system according to claim 8 is characterized in that, described a plurality of internal structures edge is extended around the circumferential direction of the central axis of described fuel injector or is alignd with it.
12. system according to claim 8 is characterized in that, described a plurality of internal structures comprise and are oriented first group of internal structure and the second group of internal structure that intersects each other.
13. system according to claim 8, it is characterized in that, in described a plurality of internal structure each comprises groove, passage, slit, fin, projection or projection, or in their any combination at least one, and wherein, the cross-sectional shape of each in described a plurality of internal structure comprises at least one in a round part, ellipse, square, rectangle or Polygons or their combination.
14. a method, it comprises:
Will be from the fuel injection that is arranged in the fuel passage in the fuel injector in reaction chamber;
To be ejected in the described reaction chamber from the oxygen that is arranged in the oxygen path in the described fuel injector; And
Refrigerant is flow through be arranged in the coolant room in the terminal portions of described fuel injector, wherein, described coolant room comprises a plurality of internal structures on the internal surface that is arranged in described coolant room.
15. method according to claim 14, it is characterized in that, at least one that may further comprise the steps: use described a plurality of internal structure or be arranged in a plurality of external structures on the outside surface of described coolant room reduce in the described terminal portions stress, reduce in the described terminal portions strain, increase the Heat transfer coefficient of described terminal portions or increase the flexibility of described terminal portions, or their any combination, perhaps use described a plurality of internal structure to cause the turbulent flow of the described refrigerant that flows through described coolant room.
16. method according to claim 14, it is characterized in that, described a plurality of internal structures are along with respect to the radial direction of the central axis of vaporising fuel injector or axial direction due, around the circumferential direction of the central axis of described vaporising fuel injector, or both extend or align with it.
17. method according to claim 14 is characterized in that, described a plurality of internal structures comprise the grid of a plurality of elongate grooves and/or elongated protrusion part, recess and/or projection, or their combination.
18. method according to claim 14 is characterized in that, comprises the described fuel gasification that makes in reactor or the gasifier.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US13/397,832 US20120318887A1 (en) | 2011-06-17 | 2012-02-16 | System And Method for Cooling a Fuel Injector |
| US13/397832 | 2012-02-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103254940A true CN103254940A (en) | 2013-08-21 |
Family
ID=48959163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100487164A Pending CN103254940A (en) | 2012-02-16 | 2013-02-07 | A system and a method for cooling a fuel injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103254940A (en) |
Cited By (1)
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|---|---|---|---|---|
| WO2018001797A1 (en) * | 2016-06-27 | 2018-01-04 | Robert Bosch Gmbh | Nozzle body for a fuel injector |
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Application publication date: 20130821 |