CN111535956A - Dual-fuel injector with isolation groove and injection method thereof - Google Patents
Dual-fuel injector with isolation groove and injection method thereof Download PDFInfo
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- CN111535956A CN111535956A CN202010478471.9A CN202010478471A CN111535956A CN 111535956 A CN111535956 A CN 111535956A CN 202010478471 A CN202010478471 A CN 202010478471A CN 111535956 A CN111535956 A CN 111535956A
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- pressure regulating
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- valve body
- sleeve
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- 238000002955 isolation Methods 0.000 title claims abstract description 93
- 239000000446 fuel Substances 0.000 title claims abstract description 78
- 238000002347 injection Methods 0.000 title claims abstract description 61
- 239000007924 injection Substances 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000001105 regulatory effect Effects 0.000 claims abstract description 118
- 230000008878 coupling Effects 0.000 claims abstract description 100
- 238000010168 coupling process Methods 0.000 claims abstract description 100
- 238000005859 coupling reaction Methods 0.000 claims abstract description 100
- 230000009977 dual effect Effects 0.000 claims abstract description 29
- 238000002485 combustion reaction Methods 0.000 claims description 16
- 239000007921 spray Substances 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 57
- 230000000694 effects Effects 0.000 description 14
- 239000007788 liquid Substances 0.000 description 9
- 230000001965 increasing effect Effects 0.000 description 8
- 239000002737 fuel gas Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
- F02M43/04—Injectors peculiar thereto
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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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to the technical field of dual-fuel injectors, and discloses a dual-fuel injector with an isolation groove and an injection method thereof. Wherein the dual fuel injector with the isolation slot comprises: the valve body is provided with an air inlet channel, an oil control inlet channel and an oil control return channel; the nozzle sleeve is detachably connected with the valve body and defines a pressure regulating cavity; the pressure regulating assembly is arranged in the pressure regulating cavity and comprises a nozzle coupling sleeve, the nozzle coupling sleeve is respectively assembled with the valve body and the nozzle sleeve in a clearance mode, a first isolation groove, a second isolation groove and an oil guide hole are formed in the nozzle coupling sleeve, the second isolation groove is communicated with the oil control inlet channel, and the air injection hole is isolated from the air inlet channel when the pressure regulating assembly is abutted to the end portion of the nozzle sleeve; and the oil control valve is arranged on the oil control oil return passage. The dual-fuel injector with the isolation groove increases the moving smoothness of the pressure regulating assembly, reduces the clamping stagnation probability of the pressure regulating assembly, reduces the failure rate of the dual-fuel injector, and prolongs the service life of the dual-fuel injector.
Description
Technical Field
The invention relates to the technical field of dual-fuel injectors with isolation grooves, in particular to a dual-fuel injector with an isolation groove and an injection method thereof.
Background
Current dual fuel injector is the injection valve that collects combustible gas and combustible oil as an organic whole generally, it can be to the interior injection combustible oil or combustible gas of combustion chamber, current dual fuel injector receives the influence of self structure, it is poor mostly to have the injection effect, the short problem of life, for example, adjust fluid can be because friction and valve body, the too high and high temperature of nozzle sleeve and nozzle coupling cover forms high temperature carbon deposit, the jam often appears along axial displacement's in-process in the pressure regulating subassembly and makes dual fuel injection's fault rate improve, the injection effect of dual fuel injector has been reduced, service life has been shortened.
Disclosure of Invention
Based on the above, it is an object of the present invention to provide a dual fuel injector with an isolation slot, which increases the injection effect of the dual fuel injector and prolongs the service life of the dual fuel injector.
Another object of the present invention is to provide a method of injecting a dual fuel injector with an isolation groove, which has the effects of enhancing the injection effect of the dual fuel injector and prolonging the service life thereof.
In order to achieve the purpose, the invention adopts the following technical scheme:
a dual fuel injector with an isolation slot comprising: the valve body is provided with an air inlet channel, an oil control inlet channel and an oil control return channel; the nozzle sleeve is detachably connected with the valve body and defines a pressure regulating cavity, and the pressure regulating cavity is respectively communicated with the oil control inlet channel, the oil control return channel and the gas orifice on the nozzle sleeve; the pressure regulating assembly is arranged in the pressure regulating cavity and comprises a nozzle coupling sleeve, the nozzle coupling sleeve is respectively assembled with the valve body and the nozzle sleeve in a clearance mode, a first isolation groove is formed in the inner wall of the nozzle coupling sleeve, a second isolation groove which is opposite to the first isolation groove is formed in the outer wall of the nozzle coupling sleeve, the second isolation groove is communicated with the oil control inlet channel, an oil guide hole which is communicated with the first isolation groove and the second isolation groove is further formed in the nozzle coupling sleeve, the gas jetting hole is isolated from the gas inlet channel when the pressure regulating assembly abuts against the end portion of the nozzle sleeve, and the pressure regulating assembly can move relative to the nozzle sleeve when the gas inlet channel is filled with combustible gas so that the gas inlet channel is communicated with the gas jetting hole; and the oil control valve is arranged on the oil control oil return passage.
As a preferred scheme of the dual-fuel injector with the isolation groove, the pressure regulating assembly comprises an elastic piece, one end of the elastic piece abuts against the valve body, and the other end of the elastic piece abuts against the nozzle coupling sleeve.
As a preferred scheme who takes dual fuel injector of isolation tank, the pressure regulating subassembly still includes the slip ring, the slip ring cover is located the one end of nozzle coupling cover and respectively with the nozzle coupling cover with nozzle sleeve clearance fit, the slip ring can be followed the removal of nozzle coupling cover removes, nozzle coupling cover butt in during the nozzle sleeve, the slip ring butt in the nozzle sleeve is so that the fumarole with inlet channel is isolated.
As a preferred scheme of the dual-fuel injector with the isolation groove, the air inlet passage comprises a first air inlet passage and a second air inlet passage, a C-shaped groove is formed in the end face of the middle of the valve body, and the C-shaped groove is communicated with the first air inlet passage and the second air inlet passage respectively.
As a preferable scheme of the dual-fuel injector with the isolation groove, the oil control inlet channel comprises a first oil control inlet channel and a second oil control inlet channel which are communicated, an outlet of the first oil control inlet channel is located at one end of the pressure regulating cavity, an outlet of the second oil control inlet channel is located at the other end of the pressure regulating cavity, and the second oil control inlet channel is communicated with the second isolation groove.
As a preferred scheme of the dual-fuel injector with the isolation groove, a first conical surface is arranged on the nozzle coupling sleeve, a second conical surface which corresponds to the first conical surface is arranged on the nozzle sleeve, and the first conical surface is attached to the second conical surface when the nozzle coupling sleeve is abutted to the nozzle sleeve.
As a preferred scheme of the dual-fuel injector with the isolation groove, an oil cavity, an oil injection hole, an oil injection oil duct and an oil inlet valve assembly are arranged on the valve body, the oil injection oil duct and the oil injection hole are respectively communicated with the oil cavity, the pressure regulating assembly further comprises the oil inlet valve assembly, the oil inlet valve assembly is arranged in the oil cavity, and the oil inlet valve assembly is configured to control the communication or isolation between the oil injection hole and the oil injection oil duct.
As a preferred scheme of the dual-fuel injector with the isolation groove, the inlet of the oil injection oil passage, the inlet of the oil control inlet channel and the inlet of the air inlet channel are respectively arranged at one end, far away from the oil injection hole, of the valve body.
As a preferred scheme of the dual-fuel injector with the isolation groove, the valve body comprises a first valve body, a second valve body and a third valve body which are sequentially connected, the oil cavity is provided with the air inlet channel, the oil control inlet channel and the oil control return channel which are arranged on the first valve body, the second valve body and the third valve body, and the third valve body and the nozzle sleeve form the pressure regulating cavity.
A method of injecting a dual fuel injector with an isolation tank as defined in any of the above aspects, comprising the steps of:
regulating oil is introduced into the pressure regulating cavity through the oil control inlet channel, and the regulating oil is communicated with the first isolating groove and the second isolating groove through the oil guide hole;
the oil control valve is opened, the regulating oil in the pressure regulating cavity can flow out through the oil control oil return channel and the oil control valve in sequence, the regulating oil in the pressure regulating cavity is gradually reduced, meanwhile, the combustible gas reaches the bottom of the nozzle sleeve through the gas inlet channel, the pressure regulating assembly moves towards the direction far away from the gas orifice, the pressure regulating assembly is separated from the nozzle sleeve, the gas inlet channel is communicated with the gas orifice, and the combustible gas is sprayed into the combustion chamber through the gas orifice for combustion;
close accuse fuel tap, accuse oil return passageway is cut off, in the pressure regulating intracavity adjust fluid and increase gradually, the pressure regulating subassembly orientation is close to the direction of fumarole removes, and is up to the pressure regulating subassembly with nozzle sleeve butt, the fumarole with inlet channel disconnection.
The invention has the beneficial effects that: the dual-fuel injector with the isolation grooves, disclosed by the invention, can enable oil films to be respectively formed between the nozzle coupling sleeve and the valve body and between the nozzle coupling sleeve and the nozzle sleeve by the first isolation groove and the second isolation groove which are additionally arranged on the nozzle coupling sleeve of the pressure regulating assembly, and a circulation loop of regulating oil liquid is formed through the oil guide hole on the nozzle coupling sleeve, the friction among the valve body, the nozzle sleeve and the nozzle coupling sleeve is reduced by the formation of the oil films, the friction among the valve body, the nozzle sleeve and the nozzle coupling sleeve can be reduced by the regulating oil liquid flowing in the circulation loop, the probability of high-temperature carbon deposition formed by the regulating oil liquid is reduced, the moving smoothness of the pressure regulating assembly is increased, the probability of clamping stagnation of the pressure regulating assembly is reduced, the fault rate of the dual-fuel injector is reduced, the service life of the dual-fuel injector is prolonged, and in addition, the first isolation groove and the second isolation groove which are additionally arranged can, the injection effect of the dual-fuel injector is improved.
The injection method of the dual-fuel injector with the isolation groove disclosed by the invention has the advantages of good injection effect and long service life of the dual-fuel injector.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a cross-sectional view in a first direction of a dual fuel injector with an isolation tank provided in accordance with a specific embodiment of the present invention;
FIG. 2 is a partial cross-sectional view of a dual fuel injector with an isolation tank in a second orientation provided by a specific embodiment of the present invention;
fig. 3 is a schematic view of a partial structure of a third valve body according to an embodiment of the present invention.
In the figure:
101. an air intake passage; 102. controlling oil to enter the channel; 1021. a first oil control inlet channel; 1022. a second oil control inlet channel; 103. an oil control and return passage; 104. an oil chamber; 105. an oil spray hole; 106. an oil injection duct; 11. a first valve body; 12. a second valve body; 13. a third valve body;
2. a nozzle sleeve; 201. a pressure regulating cavity; 202. a gas injection hole;
3. a voltage regulating component; 31. a nozzle coupling sleeve; 3101. a first isolation trench; 3102. a second isolation trench; 3103. an oil guide hole; 32. an elastic member; 33. a slip ring;
4. an oil control valve;
5. an oil inlet valve assembly; 51. an oil inlet valve body; 52. a valve stem;
61. a first seal member;
71. a first locking cap; 72. a second locking cap.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a dual-fuel injector with isolation grooves, which comprises a valve body, a nozzle sleeve 2, a pressure regulating assembly 3 and an oil control valve 4, wherein the valve body is provided with an air inlet channel 101, an oil control inlet channel 102 and an oil control return channel 103, the nozzle sleeve 2 is detachably connected with the valve body, the two are used for limiting a pressure regulating cavity 201, the pressure regulating cavity 201 is respectively communicated with the oil control inlet channel 102, the oil control return channel 103 and an air injection hole 202 on the nozzle sleeve 2, the pressure regulating assembly 3 is arranged in the pressure regulating cavity 201, the pressure regulating assembly 3 comprises a nozzle coupling sleeve 31, the nozzle coupling sleeve 31 is respectively assembled with the valve body and the nozzle sleeve 2 in a clearance way, the inner wall of the nozzle coupling sleeve 31 is provided with a first isolation groove 3101, the outer wall is provided with a second isolation groove 3102 which is arranged right opposite to the first isolation groove 3101, the second isolation groove 3102 is communicated with the oil control inlet channel 102, the nozzle coupling sleeve 31 is further provided with an oil guide hole 3103 which is, the fumarole 202 is isolated with inlet channel 101 when the tip butt of pressure regulating subassembly 3 and nozzle cover 2, and pressure regulating subassembly 3 can remove so that inlet channel 101 and fumarole 202 intercommunication for nozzle cover 2 when inlet channel 101 lets in combustible gas, and accuse oil valve 4 is located on accuse oil return passage 103.
It should be noted that, the nozzle sleeve 2 of the present embodiment is screwed to the valve body, and in order to prevent the pressure regulating oil in the pressure regulating chamber 201 from leaking, the first sealing member 61 is provided between the nozzle sleeve 2 and the valve body to ensure the sealing performance therebetween.
In the prior art, because the nozzle coupling sleeve 31 is respectively provided with a gap between the valve body and the nozzle sleeve 2, so that the conditioning oil at the upper portion of the pressure conditioning chamber 201 leaks downward through the gap, but during operation of the dual fuel injector, because the valve body, the nozzle sleeve 2 and the nozzle coupling sleeve 31 are influenced by the temperature of the combustion chamber in the using process, the temperature of one end of the valve body, the nozzle sleeve 2 and the nozzle coupling sleeve 31 close to the combustion chamber is higher, and the nozzle coupling sleeve 31 slides relative to the valve body and the nozzle sleeve 2 respectively, so that the temperature in the gap is higher, the total amount of leaked regulating oil is less, the regulating oil is carbonized at high temperature, and then increase the frictional force of nozzle coupling sleeve 31 and valve body and nozzle sleeve 2 for the jamming appears in the slip of nozzle coupling sleeve 31, thereby makes combustible gas's injection jamming appear, has promoted the fault rate of dual fuel injection. In this embodiment, the first isolation groove 3101, the second isolation groove 3102 and the oil guide hole 3103 are additionally arranged on the nozzle coupling sleeve 31, so that more adjusting oil enters the second isolation groove 3102 and enters the first isolation groove 3101 through the oil guide hole 3103, and an oil film is formed in a gap between the nozzle coupling sleeve 31 and the valve body and the nozzle sleeve 2, thereby further increasing the smoothness of the nozzle coupling sleeve 31 and ensuring that the injection effect of the dual-fuel injector with the isolation grooves is better.
The first isolation groove 3101 and the second isolation groove 3102 which are additionally arranged on the nozzle coupling sleeve 31 of the pressure regulating assembly 3 of the dual-fuel injector with the isolation grooves provided by the embodiment can enable oil films to be respectively formed between the nozzle coupling sleeve 31 and the valve body and between the nozzle coupling sleeve 31 and the nozzle sleeve 2, and a circulation loop of regulating oil is formed through the oil guide hole 3103 on the nozzle coupling sleeve 31, the friction of the valve body, the nozzle sleeve 2 and the nozzle coupling sleeve 31 is reduced due to the formation of the oil films, the regulating oil flowing in the circulation loop can cool the valve body, the nozzle sleeve 2 and the nozzle coupling sleeve 31, the probability of high-temperature carbon deposition formed by the regulating oil is reduced, the moving smoothness of the pressure regulating assembly 3 is increased, the probability of clamping stagnation of the pressure regulating assembly 3 is reduced, the fault rate of the dual-fuel injector is reduced, the service life of the dual-fuel injector is prolonged, in addition, the first isolation groove 3101 and the second isolation groove 3102 which are additionally arranged can also prevent the regulating oil and combustible gas Therefore, the injection effect of the dual-fuel injector is improved.
Further, in this embodiment, the first isolation groove 3101 is a first annular groove, the second isolation groove 3102 is a second annular groove, and the oil guide hole 3103 extends along the radial direction of the nozzle coupling sleeve 31, so that the pressure of the regulating oil in the first annular groove on the nozzle coupling sleeve 31 is the same as the pressure of the regulating oil in the second annular groove on the nozzle coupling sleeve 31, and the coaxiality of the nozzle coupling sleeve 31 and the valve body is ensured. The length of the first annular groove in the axial direction of the nozzle coupling sleeve 31 is the same as the length of the second annular groove in the axial direction of the nozzle coupling sleeve 31, the radial depth of the first annular groove in the radial direction of the nozzle coupling sleeve 31 is the same as the radial depth of the second annular groove in the radial direction of the nozzle coupling sleeve 31, so that the oil film between the nozzle coupling sleeve 31 and the valve body is the same as the oil film between the nozzle coupling sleeve 31 and the nozzle sleeve 2, the friction force applied to the nozzle coupling sleeve 31 in the moving process is reduced, the time from the opening of the oil control valve 4 to the spraying of combustible gas is shortened in the switching process of the oil control valve 4, and the response speed of the combustible gas is improved.
The nozzle coupling sleeve 31 of this embodiment is provided with a first conical surface, the nozzle sleeve 2 is provided with a second conical surface corresponding to the first conical surface, and the first conical surface and the second conical surface are attached to each other when the nozzle coupling sleeve 31 abuts against the nozzle sleeve 2.
Specifically, the pressure regulating assembly 3 of the present embodiment further includes an elastic member 32 and a sliding ring 33, the elastic member 32 is a spring, one end of the elastic member 32 abuts against the valve body, and the other end of the elastic member 32 abuts against the nozzle coupling sleeve 31. The sliding ring 33 is sleeved at one end of the nozzle coupling sleeve 31 and is in clearance fit with the nozzle coupling sleeve 31 and the nozzle sleeve 2 respectively, the sliding ring 33 can move along with the movement of the nozzle coupling sleeve 31, and when the nozzle coupling sleeve 31 abuts against the nozzle sleeve 2, the sliding ring 33 abuts against the nozzle sleeve 2 to isolate the gas injection hole 202 from the gas inlet channel 101.
Further, the elastic coefficient of the spring of this embodiment is 10N/mm, after the elastic element 32 and the nozzle coupling sleeve 31 are installed in the pressure regulating cavity 201, the spring is in a compressed state, and the pretightening force of the spring is 40N, so as to ensure that a proper opening pressure exists when the air injection hole 202 is communicated with the air inlet channel 101. Of course, in other embodiments of the present invention, the elastic coefficient and the pre-tightening force of the spring are not limited to the limitations of this embodiment, but may also be other values, specifically related to the pressure of the injected combustible gas, when the pressure of the combustible gas is higher, the elastic coefficient and the pre-tightening force of the spring may be appropriately increased, and when the pressure of the combustible gas is lower, the elastic coefficient and the pre-tightening force of the spring may be appropriately decreased, specifically set according to actual requirements.
The valve body of this embodiment is including the first valve body 11, the second valve body 12 and the third valve body 13 of fixed connection in proper order, and the junction cover of first valve body 11 and the second valve body 12 is equipped with first locking cap 71 so that first valve body 11 and second valve body 12 fixed connection, and the junction cover of second valve body 12 and third valve body 13 is equipped with second locking cap 72 so that second valve body 12 and third valve body 13 fixed connection, and the lower extreme and the nozzle collar 2 threaded connection of second locking cap 72 make nozzle collar 2 fixed mounting on third valve body 13. Specifically, the air inlet passage 101, the oil control inlet passage 102, and the oil control return passage 103 of the present embodiment are disposed on the first valve body 11, the second valve body 12, and the third valve body 13 and the nozzle sleeve 2 define the pressure regulating chamber 201. Wherein, the inlet of the air inlet channel 101 and the inlet of the oil control inlet channel 102 are located on the upper end surface of the first valve body 11, the inlet of the oil control return channel 103 is located on the third valve body 13 communicated with the pressure regulating cavity 201, and the outlet of the oil control return channel 103 is located on the upper end surface of the first valve body 11.
Further, the nozzle coupling sleeve 31 and the third valve body 13 of the present embodiment form a first couple, the outer diameter of the first couple is 6.6mm, the length of the first couple is 6mm, and the gap between the nozzle coupling sleeve 31 and the third valve body 13 is 2 μm-4 μm. The nozzle coupling sleeve 31 and the nozzle sleeve 2 form a second matching part, the outer diameter of the second matching part is 9mm, the length of the second matching part is 4.5mm, and the gap between the nozzle coupling sleeve 31 and the nozzle sleeve 2 is 2-4 mu m.
The terminal surface of the nozzle coupling cover 31 and the elastic component 32 butt of this embodiment is first ring, and the nozzle coupling cover 31 can be the second ring with the terminal surface of valve body butt, and fumarole 202 is located the middle part of second ring, and the area of first ring is greater than the area of second ring. Specifically, the width of the first ring is 1mm, and the width of the second ring is 0.6 mm.
The inlet channel 101 of this embodiment includes first inlet channel and second inlet channel, is equipped with C type groove on the terminal surface at the middle part of valve body, C type groove respectively with first inlet channel and second inlet channel intercommunication, the C type groove of setting can prevent that combustible oil or mediation fluid from getting into C type groove and influencing combustible gas's injection.
The oil control inlet passage 102 of the present embodiment includes a first oil control inlet passage 1021 and a second oil control inlet passage 1022, which are communicated with each other, an outlet of the first oil control inlet passage 1021 is located at one end of the pressure regulating cavity 201, and the second oil control inlet passage 1022 is communicated with the second isolation groove 3102. For the convenience of processing, the outlet of the second oil control inlet passage 1022 extends to the lower end of the third valve body 13, and the lower end of the third valve body 13 abuts against the nozzle sleeve 2, so that the second oil control inlet passage 1022 is in an isolated state with the pressure regulating cavity 201, that is, the second oil control inlet passage 1022 is not communicated with the pressure regulating cavity 201. Specifically, the nozzle sleeve 2 and the third valve body 13 are provided with annular end faces, and after assembly is completed, the annular end face of the nozzle sleeve 2 is attached to the annular end face of the third valve body 13, so that the second oil control inlet passage 1022 does not enter the pressure regulating cavity 201.
Specifically, after the combustible oil enters the valve body through the first oil control inlet passage 1021, a part of the combustible oil flows into the second oil control inlet passage 1022, the other part of the combustible oil enters the pressure regulating cavity 201 from the upper part of the pressure regulating cavity 201, most of the combustible oil flowing into the second oil control inlet passage 1022 enters the second isolation groove 3102 and enters the first isolation groove 3101 through the oil guide hole 3103, and a small part of the combustible oil remains at the lower part of the second oil control inlet passage 1022, because the first isolation groove 3101 and the second isolation groove 3102 are both communicated with the pressure regulating cavity 201 at the upper part of the nozzle coupling sleeve 31, the combustible oil flowing into the second oil control inlet passage 102 enters the pressure regulating cavity 201 and finally flows out through the oil control return passage 103.
The valve body of the embodiment is provided with an oil cavity 104, an oil injection hole 105 and an oil injection oil duct 106, the oil injection duct 106 and the oil injection hole 105 are respectively communicated with the oil cavity 104, the pressure regulating assembly 3 further comprises an oil inlet valve assembly 5, the oil inlet valve assembly 5 is arranged in the oil cavity 104, and the oil inlet valve assembly 5 is configured to control the communication or isolation between the oil injection hole 105 and the oil injection duct 106. The oil inlet valve assembly 5 comprises an oil inlet valve body 51 and a valve rod 52, wherein the oil inlet valve body 51 can drive the valve rod 52 to move axially to realize the connection or disconnection of an oil injection channel 106 and an oil injection hole 105. The oil chamber 104 is provided in the first valve body 11, the second valve body 12, and the third valve body 13, and the oil injection passage 106 is provided in the middle of the second valve body 12 and communicates with the oil chamber 104. On the third valve body 13 was located to nozzle 105, nozzle 105's number was a plurality of, and a plurality of nozzle 105 along the circumference evenly distributed of third valve body 13, along the flow direction of combustible oil, nozzle 105's flow area reduces gradually to increase the pressure of the combustible oil who erupts, realize the spontaneous combustion of combustible oil.
The nozzle opening 105 on the third valve body 13 of the double fuel injector with the isolation groove of the embodiment is distributed in an outward radiation manner, the pressure regulating cavity 201 formed between the nozzle coupling sleeve 31 and the valve body is in a circular ring shape, the effect of stabilizing the pressure regulating cavity 201 is achieved, combustible gas can be uniformly injected through each gas orifice 202 on the nozzle sleeve 2, the problem that the combustible gas injection effect is different due to the fact that the double fuel injector is limited by the structure of the double fuel injector in the prior art is solved, the combustible gas is uniformly injected, in addition, the sliding ring 33 can be abutted to the nozzle sleeve 2 where the gas orifice 202 is located, the residual quantity of the combustible gas remaining in a cavity formed between the nozzle sleeve 31 and the valve body is basically zero, and the injection effect is better.
The dual-fuel injector with the isolation groove can only inject combustible gas or combustible oil liquid, can inject combustible oil liquid and combustible gas alternately, can inject dual fuels, can specifically select according to price variation, storage capacity, convenience in use and the like of combustible oil liquid and combustible gas, can meet different areas and different user requirements, and can select a working mode of only burning combustible oil liquid, a working mode of only burning combustible gas or a working mode of alternately burning combustible oil liquid and combustible gas, so that the most economical use mode is provided for customers.
Specifically, if only combustible gas is injected, the oil inlet valve assembly 5 is kept in a closed state, the oil control valve 4 is opened, the lower end face of the nozzle coupling sleeve 31 is separated from the valve body, the elastic piece 32 is in a compressed state, the air inlet channel 101 is communicated with the air injection hole 202, the combustible gas is injected into the combustion chamber through the air injection hole 202 for combustion, at the moment, the lower end face of the valve rod 52 is abutted to the valve body, and the oil injection hole 105 is isolated from the oil injection oil duct 106; if only combustible oil is injected, the oil control valve 4 is kept in a closed state, the oil inlet valve assembly 5 is opened, the lower end face of the valve rod 52 is separated from the valve body, the combustible oil in the oil cavity 104 is injected into the combustion chamber through the oil injection hole 105, at the moment, the lower end face of the nozzle coupling sleeve 31 is abutted against the valve body, the elastic piece 32 is in a natural state, and the air inlet channel 101 is isolated from the air injection hole 202; if combustible oil and combustible gas are alternately injected, the combustible oil is injected by keeping the oil control valve 4 in a closed state and opening the oil inlet valve assembly 5, and then the combustible gas is injected by keeping the oil inlet valve assembly 5 in a closed state and opening the oil control valve 4.
It should be noted that, when the dual-fuel injector with the isolation groove alternately injects combustible oil and combustible gas, when the oil control valve 4 is opened, the combustible oil in the pressure regulating cavity 201 flows out through the oil control return passage 103, and since the oil control valve 4 is opened, the oil control liquid always enters the valve body, and gaps between the nozzle coupling sleeve 31 and the valve body and the nozzle sleeve 2 are small, so that the adjustment oil always exists in the first isolation groove 3101, the second isolation groove 3102 and the oil guide hole 3103, and oil films exist in gaps between the nozzle coupling sleeve 31 and the valve body and the nozzle sleeve 2, respectively, so that the nozzle coupling sleeve 31 can smoothly move along the axial direction of the valve body.
Further, when the fuel control valve 4 is opened and the fuel inlet valve assembly 5 is closed when the fuel control valve 4 and the fuel gas are alternately injected, the regulating fuel in the pressure regulating cavity 201 can flow out through the fuel control oil return passage 103 and the fuel control valve 4 in sequence, the regulating fuel in the pressure regulating cavity 201 is gradually reduced, the acting force of the regulating fuel on the nozzle coupling sleeve 31 is gradually reduced, meanwhile, the fuel gas reaches the bottom of the nozzle sleeve 2 through the fuel inlet passage 101, the acting force of the fuel gas on the nozzle coupling sleeve 31 is gradually increased, when the sum of the pressure of the elastic element 32 on the nozzle coupling sleeve 31 and the acting force of the regulating fuel on the nozzle coupling sleeve 31 is smaller than the acting force of the fuel gas on the nozzle coupling sleeve 31, the nozzle coupling sleeve 31 and the sliding ring 33 move in the direction away from the gas injection hole 202, the elastic element 32 is gradually compressed, the pressure of the elastic element 32 on the nozzle coupling sleeve 31 is gradually increased, the lower ends of the nozzle coupling sleeve 31 and the sliding ring 33 are separated, the air inlet channel 101 is communicated with the gas injection holes 202, and the combustible gas is injected into the combustion chamber through the gas injection holes 202 for combustion. When the oil control valve 4 is closed, the oil control return passage 103 is cut off, the adjusting oil in the pressure adjusting cavity 201 gradually increases, the acting force of the adjusting oil on the nozzle coupling sleeve 31 gradually decreases, when the sum of the pressure of the elastic piece 32 on the nozzle coupling sleeve 31 and the acting force of the adjusting oil on the nozzle coupling sleeve 31 is greater than the acting force of the combustible gas on the nozzle coupling sleeve 31, the nozzle coupling sleeve 31 and the sliding ring 33 move towards the direction close to the gas ejecting hole 202, meanwhile, the compression amount of the elastic piece 32 gradually decreases, the pressure of the elastic piece 32 on the nozzle coupling sleeve 31 gradually decreases until the sliding ring 33 and the nozzle coupling sleeve 31 are abutted against the nozzle sleeve 2, and the gas ejecting hole 202 is disconnected from the gas inlet passage 101.
The dual-fuel injector with the isolation groove is simple in structure, changes to the cylinder cover are small during installation, and the problem that the split dual-fuel injector is difficult to arrange is solved.
The present embodiment also provides an injection method of the dual fuel injector with the isolation tank according to the present embodiment, including the following steps:
step one, keeping an oil control valve 4 in a closed state, introducing regulating oil into a pressure regulating cavity 201 through an oil control inlet channel 102, and communicating the regulating oil with a first isolation groove 3101 and a second isolation groove 3102 through an oil guide hole 3103;
step two, the oil inlet valve assembly 5 is opened, the valve rod 52 is separated from the valve body, the combustible oil in the oil cavity 104 is sprayed to the combustion chamber through the oil spray hole 105, the pressure of the combustible oil is increased, and spontaneous combustion occurs;
step three, opening an oil control valve 4 and closing an oil inlet valve assembly 5, enabling the regulating oil in a pressure regulating cavity 201 to flow out through an oil control oil return channel 103 and the oil control valve 4 in sequence, gradually reducing the regulating oil in the pressure regulating cavity 201, meanwhile, enabling combustible gas to reach the bottom of a nozzle sleeve 2 through an air inlet channel 101, moving a pressure regulating assembly 3 towards the direction far away from an air jet hole 202, separating the pressure regulating assembly 3 from the nozzle sleeve 2, communicating the air inlet channel 101 with the air jet hole 202, and injecting the combustible gas into a combustion chamber through the air jet hole 202 for combustion;
step four, closing the oil control valve 4, cutting off the oil control return passage 103, gradually increasing the regulating oil in the pressure regulating cavity 201, moving the pressure regulating assembly 3 towards the direction close to the gas orifice 202 until the pressure regulating assembly 3 is abutted against the nozzle sleeve 2, and disconnecting the gas orifice 202 from the gas inlet passage 101;
and step five, continuing to repeat the step two to the step four until the injection is finished.
The injection method of the dual-fuel injector with the isolation groove provided by the embodiment enables the dual-fuel injector to have the advantages of good injection effect and long service life.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A dual fuel injector with an isolation slot, comprising:
the oil control valve comprises a valve body, wherein an air inlet channel (101), an oil control inlet channel (102) and an oil control return channel (103) are arranged on the valve body;
the nozzle sleeve (2) is detachably connected with the valve body, a pressure regulating cavity (201) is defined by the nozzle sleeve (2) and the valve body, and the pressure regulating cavity (201) is respectively communicated with the oil control inlet channel (102), the oil control return channel (103) and a gas orifice (202) in the nozzle sleeve (2);
pressure regulating subassembly (3), pressure regulating subassembly (3) are located in pressure regulating chamber (201), pressure regulating subassembly (3) include nozzle coupling cover (31), nozzle coupling cover (31) respectively with the valve body with nozzle sleeve (2) clearance fit, be equipped with first isolation groove (3101) on the inner wall of nozzle coupling cover (31), be equipped with on the outer wall with first isolation groove (3101) is just to second isolation groove (3102) that sets up, second isolation groove (3102) with accuse oil admission passage (102) intercommunication, still be equipped with the intercommunication on nozzle coupling cover (31) first isolation groove (3101) with oil hole (3103) are led of second isolation groove (3102), pressure regulating subassembly (3) with during the tip butt of nozzle sleeve (2) fumarole (202) with admission passage (101) are isolated, during admission passage (101) let in combustible gas pressure regulating subassembly (3) can for nozzle sleeve (2) move Moving the air inlet channel (101) to communicate with the air injection hole (202);
and the oil control valve (4) is arranged on the oil control oil return channel (103).
2. The dual fuel injector with the isolation slot as claimed in claim 1, wherein the pressure regulating assembly (3) comprises an elastic member (32), one end of the elastic member (32) abuts against the valve body, and the other end of the elastic member (32) abuts against the nozzle coupling sleeve (31).
3. The dual fuel injector with the isolation groove as claimed in claim 1, wherein the pressure regulating assembly (3) further comprises a sliding ring (33), the sliding ring (33) is sleeved at one end of the nozzle coupling sleeve (31) and is in clearance fit with the nozzle coupling sleeve (31) and the nozzle sleeve (2) respectively, the sliding ring (33) can move along with the movement of the nozzle coupling sleeve (31), when the nozzle coupling sleeve (31) abuts against the nozzle sleeve (2), the sliding ring (33) abuts against the nozzle sleeve (2) so that the gas injection hole (202) is isolated from the gas inlet channel (101).
4. The dual fuel injector with the isolation groove as claimed in claim 1, wherein the intake passage (101) comprises a first intake passage and a second intake passage, and a C-shaped groove is provided on an end surface of the middle portion of the valve body, and the C-shaped groove is respectively communicated with the first intake passage and the second intake passage.
5. The dual fuel injector with the isolation slot of claim 1, wherein the oil control inlet passage (102) comprises a first oil control inlet passage (1021) and a second oil control inlet passage (1022) which are communicated, an outlet of the first oil control inlet passage (1021) is located at one end of the pressure regulating cavity (201), and the second oil control inlet passage (1022) is communicated with the second isolation slot (3102).
6. The dual fuel injector with the isolation groove as claimed in claim 1, wherein a first conical surface is provided on the nozzle coupling sleeve (31), a second conical surface corresponding to the first conical surface is provided on the nozzle sleeve (2), and the first conical surface and the second conical surface are fitted when the nozzle coupling sleeve (31) is abutted against the nozzle sleeve (2).
7. The dual fuel injector with the isolation groove as claimed in claim 1, wherein an oil chamber (104), an oil spray hole (105) and an oil spray channel (106) are arranged on the valve body, the oil spray channel (106) and the oil spray hole (105) are respectively communicated with the oil chamber (104), the pressure regulating assembly (3) further comprises an oil inlet valve assembly (5), the oil inlet valve assembly (5) is arranged in the oil chamber (104), and the oil inlet valve assembly (5) is configured to control the communication or isolation of the oil spray hole (105) and the oil spray channel (106).
8. The dual fuel injector with the isolation groove of claim 7, wherein an inlet of the oil injection passage (106), an inlet of the oil control inlet passage (102), and an inlet of the air intake passage (101) are respectively provided at an end of the valve body away from the oil injection hole (105).
9. The dual fuel injector with the isolation groove as claimed in claim 7, wherein the valve body comprises a first valve body (11), a second valve body (12) and a third valve body (13) which are connected in sequence, the oil chamber (104), the air inlet channel (101), the oil control inlet channel (102) and the oil control return channel (103) are all arranged on the first valve body (11), the second valve body (12) and the third valve body (13), and the third valve body (13) and the nozzle sleeve (2) form the pressure regulating cavity (201).
10. A method of injecting a dual fuel injector with an isolation tank as claimed in any one of claims 1 to 9, comprising the steps of:
regulating oil is introduced into the pressure regulating cavity (201) through the oil control inlet passage (102), and the regulating oil is communicated with the first isolation groove (3101) and the second isolation groove (3102) through the oil guide hole (3103);
the oil control valve (4) is opened, the adjusting oil in the pressure regulating cavity (201) can sequentially pass through the oil control oil return channel (103) and the oil control valve (4) to flow out, the adjusting oil in the pressure regulating cavity (201) is gradually reduced, meanwhile, the combustible gas passes through the gas inlet channel (101) to reach the bottom of the nozzle sleeve (2), the pressure regulating assembly (3) moves towards the direction far away from the gas orifice (202), the pressure regulating assembly (3) is separated from the nozzle sleeve (2), the gas inlet channel (101) is communicated with the gas orifice (202), and the combustible gas is sprayed into a combustion chamber through the gas orifice (202) to be combusted;
close accuse fuel tap (4), accuse oil return passageway (103) are cut off, in pressure regulating chamber (201) adjust fluid and increase gradually, pressure regulating subassembly (3) orientation is close to the direction of fumarole (202) removes, until pressure regulating subassembly (3) with nozzle bush (2) butt, fumarole (202) with inlet channel (101) disconnection.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135430A (en) * | 2021-12-08 | 2022-03-04 | 一汽解放汽车有限公司 | Fuel injection valve |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6312874A (en) * | 1986-07-03 | 1988-01-20 | Tech Res Assoc Highly Reliab Marine Propul Plant | Two kind fluid injection valve |
| JPH07150966A (en) * | 1993-11-26 | 1995-06-13 | Mitsubishi Heavy Ind Ltd | Dual fluid injection device |
| CN102705120A (en) * | 2012-06-19 | 2012-10-03 | 哈尔滨工程大学 | Dual-fuel electric control monomer ejector |
| CN103089505A (en) * | 2013-01-21 | 2013-05-08 | 江苏大学 | Device and method capable of achieving natural gas and diesel double-fuel jet |
| CN103277223A (en) * | 2013-05-27 | 2013-09-04 | 江苏大学 | Piston valve type double fuel ejector driven by improved cam shaft |
| CN105545555A (en) * | 2016-01-04 | 2016-05-04 | 江苏大学 | Nozzle capable of achieving dual fuel injection |
| WO2018054786A1 (en) * | 2016-09-21 | 2018-03-29 | Delphi Technologies Ip Limited | Dual fuel injector |
-
2020
- 2020-05-29 CN CN202010478471.9A patent/CN111535956B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6312874A (en) * | 1986-07-03 | 1988-01-20 | Tech Res Assoc Highly Reliab Marine Propul Plant | Two kind fluid injection valve |
| JPH07150966A (en) * | 1993-11-26 | 1995-06-13 | Mitsubishi Heavy Ind Ltd | Dual fluid injection device |
| CN102705120A (en) * | 2012-06-19 | 2012-10-03 | 哈尔滨工程大学 | Dual-fuel electric control monomer ejector |
| CN103089505A (en) * | 2013-01-21 | 2013-05-08 | 江苏大学 | Device and method capable of achieving natural gas and diesel double-fuel jet |
| CN103277223A (en) * | 2013-05-27 | 2013-09-04 | 江苏大学 | Piston valve type double fuel ejector driven by improved cam shaft |
| CN105545555A (en) * | 2016-01-04 | 2016-05-04 | 江苏大学 | Nozzle capable of achieving dual fuel injection |
| WO2018054786A1 (en) * | 2016-09-21 | 2018-03-29 | Delphi Technologies Ip Limited | Dual fuel injector |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135430A (en) * | 2021-12-08 | 2022-03-04 | 一汽解放汽车有限公司 | Fuel injection valve |
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