CN110541780A - Methanol ejector nozzle structure - Google Patents
Methanol ejector nozzle structure Download PDFInfo
- Publication number
- CN110541780A CN110541780A CN201910896343.3A CN201910896343A CN110541780A CN 110541780 A CN110541780 A CN 110541780A CN 201910896343 A CN201910896343 A CN 201910896343A CN 110541780 A CN110541780 A CN 110541780A
- Authority
- CN
- China
- Prior art keywords
- nozzle
- hole
- section
- methanol
- nozzle plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 150
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 40
- 239000010959 steel Substances 0.000 claims abstract description 40
- 238000007789 sealing Methods 0.000 claims abstract description 23
- 239000007921 spray Substances 0.000 claims abstract description 6
- 230000004323 axial length Effects 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 3
- 230000002349 favourable effect Effects 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 230000008021 deposition Effects 0.000 abstract description 4
- 239000000295 fuel oil Substances 0.000 abstract description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/04—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00 having valves, e.g. having a plurality of valves in series
- F02M61/10—Other injectors with elongated valve bodies, i.e. of needle-valve type
- F02M61/12—Other injectors with elongated valve bodies, i.e. of needle-valve type characterised by the provision of guiding or centring means for valve bodies
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1853—Orifice plates
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1866—Valve seats or member ends having multiple cones
-
- 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
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/188—Spherical or partly spherical shaped valve member ends
-
- 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
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/06—Fuel-injection apparatus having means for preventing coking, e.g. of fuel injector discharge orifices or valve needles
Abstract
the invention relates to a methanol ejector nozzle structure which mainly comprises a nozzle body, a nozzle plate, a nozzle head, a valve rod and a steel ball. The nozzle plate adopts a thin-sheet porous nozzle plate, the length-diameter ratio of the spray hole is reduced, and methanol forms S-shaped flow through the combination of the porous nozzle plate and the nozzle head with the cavity, so that the fuel oil is more favorably crushed and atomized, the methanol and air are mixed more uniformly, the heat efficiency of the engine is improved, and the carbon deposition of the nozzle plate can be obviously reduced. In addition, the valve rod part adopts two-section linear guide, the first section is designed at the head part of the valve rod, and the second section is designed at the position of the steel ball, so that the steel ball and the conical surface of the nozzle head can be automatically centered without over-positioning, and the sealing performance is good.
Description
Technical Field
The invention relates to the technical field of methanol ejectors, in particular to a nozzle structure of a methanol ejector.
Background
Under the control of an electric control system, a methanol injector which injects methanol into an air inlet pipe at fixed time, fixed quantity and fixed pressure and drives a methanol fuel engine to normally operate is an important device of a methanol injection system, but similar products sold in the market have the following problems:
First, methanol is poorly atomized, mixes unevenly with air, burns insufficiently, and is prone to carbon deposition.
Secondly, the valve rod part is guided by the valve rod, and the coaxiality of the steel ball and the conical surface of the nozzle head is poor, so that the steel ball is not tightly sealed, and the dripping leakage is formed.
Disclosure of Invention
The invention aims to solve the problems of the prior similar products and develops a novel methanol ejector nozzle structure, wherein a nozzle plate of the methanol ejector nozzle structure is a thin-sheet porous stainless steel plate, the length-diameter ratio of a spray hole is reduced, and methanol forms S-shaped flow through the combination of the porous nozzle plate and a nozzle head with a cavity, so that fuel oil is more favorably crushed and atomized, the methanol and air are mixed more uniformly, the heat efficiency of an engine is improved, and carbon deposition of the nozzle plate can be obviously reduced. In addition, the valve rod part adopts two-section linear guide, the first section is designed at the head part of the valve rod, and the second section is designed at the position of the steel ball, so that the steel ball and the conical surface of the nozzle head can be automatically centered without generating over-positioning and clamping stagnation, and the sealing performance is good.
In order to achieve the purpose of the invention, the technical scheme adopted by the invention is as follows:
A methanol injector nozzle structure comprises a nozzle body, a nozzle plate, a nozzle head and a valve rod component, wherein the nozzle body is a thin-wall cylindrical part, the nozzle head and the nozzle plate are fixedly arranged at the lower end of the nozzle body, and the nozzle head is positioned above the nozzle plate; the valve rod component comprises a valve rod and a steel ball fixed at the bottom of the valve rod, and is characterized in that a plurality of spray holes are formed in the nozzle plate; a four-stage stepped hole and a sealing conical surface are coaxially arranged on the nozzle head, the four-stage stepped hole is respectively a first hole section, a second hole section, a third hole section and a fourth hole section from top to bottom, the sealing conical surface is arranged at the joint of the third hole section and the second hole section, and the steel ball is matched with the sealing conical surface; the inner diameter of the second hole section is matched with the outer diameter of the steel ball, and the steel ball is positioned; the internal diameter of second hole section is greater than the internal diameter of third hole section, the internal diameter of fourth hole section is also greater than the internal diameter of third hole section, the orifice radial position on the nozzle plate sets up the fourth hole section inner edge department of nozzle head makes methyl alcohol pass through behind the sealed conical surface, forms S type route flow when flowing through the fourth hole section by third hole section reentrant fourth hole section inner edge department' S orifice, is favorable to the breakage and the atomizing of fuel more.
In a preferred embodiment of the invention, the axis of the nozzle orifice is at an angle to the axis of the nozzle plate.
In a preferred embodiment of the present invention, the axis of the nozzle hole is gradually distant from the nozzle plate center line from a side of the nozzle plate adjacent to the nozzle head to a side of the nozzle plate distant from the nozzle head.
In a preferred embodiment of the invention, the number of the jet holes on the nozzle plate is six, and the jet holes are symmetrically distributed on the center line of the nozzle plate.
In a preferred embodiment of the invention, a counterbore is arranged on one surface of the nozzle plate adjacent to the nozzle head, and six jet holes are symmetrically distributed on the bottom of the counterbore, so that the length of the jet holes is further reduced, and the atomization effect is improved.
In a preferred embodiment of the invention, a marker hole is provided in the nozzle plate on the side remote from the nozzle head.
In a preferred embodiment of the present invention, the identification hole is a blind hole.
In a preferred embodiment of the present invention, the marking holes are located on a center line of the symmetrical distribution of the nozzle holes.
In a preferred embodiment of the invention, the nozzle plate thickness is no more than 0.2 mm.
In a preferred embodiment of the invention, the sealing cone has a cone angle of 90 °, so that the sealing cone flow area is larger for a cone angle of 90 ° for the same lift.
In a preferred embodiment of the present invention, the valve rod is composed of two stages of coaxial rod sections, which are a first rod section and a second rod section from top to bottom, respectively, a counter bore and a valve hole are arranged in the center of the valve rod, and the counter bore is located above the valve hole and is communicated with the valve hole; and a plurality of radial through holes are axially arranged at intervals on the second shaft rod section, and each radial through hole is communicated with the valve hole. The design of valve hole and radial through-hole not only forms methyl alcohol circulation passageway, has alleviateed the quality of valve rod simultaneously, can effectual noise reduction, increase the response speed of valve rod part.
In a preferred embodiment of the invention, a first linear guide section is provided on the first shaft section, which first linear guide section is in positioning with the nozzle body.
In a preferred embodiment of the invention, an annular projection is provided on the outer circumference of the first linear guide section, which projection acts together in a guiding manner.
In a preferred embodiment of the invention, the axial length of the annular projection does not exceed 1 mm.
In a preferred embodiment of the present invention, a tapered surface coaxial with the valve hole is provided at the bottom of the valve hole.
In a preferred embodiment of the invention, the steel ball and the conical surface at the bottom of the valve rod are welded to form a valve rod part, and the welding surface of the valve rod is designed into a conical surface so that the ball center of the steel ball is positioned on the axis of the valve rod, so that the coaxiality of the whole valve rod part is better.
In a preferred embodiment of the invention, after the steel ball and the valve rod are welded, the steel ball is cut into a pentagonal structure along the central symmetry and is matched with the nozzle head to form a methanol flow channel.
In a preferred embodiment of the invention, two ring grooves are axially arranged on the outer circle of the first shaft rod section at intervals, and the design of the ring grooves enables the circumference of the valve rod to be hydraulically balanced, so that the valve rod is guided more stably.
In a preferred embodiment of the invention, a chamfer is arranged at the inlet of the counter bore of the valve rod, and an annular groove is arranged on the bottom surface of the counter bore of the valve rod and used for installing a return spring.
Due to the adoption of the technical scheme, the nozzle plate adopts the sheet type porous stainless steel plate, the length-diameter ratio of the spray holes is reduced, and simultaneously, methanol forms S-shaped flow through the combination of the porous nozzle plate and the nozzle head with the cavity, so that fuel oil is more favorably crushed and atomized, the methanol and air are more uniformly mixed, the heat efficiency of an engine is improved, and carbon deposition of the nozzle plate can be obviously reduced. In addition, the valve rod part adopts two-section linear guide, the first section is designed at the head part of the valve rod, and the second section is designed at the position of the steel ball, so that the steel ball and the conical surface of the nozzle head can be automatically centered without generating over-positioning and clamping stagnation, and the sealing performance is good.
Drawings
FIG. 1 is a schematic general diagram of the structure of the ejector of the present invention.
FIG. 2 is a schematic view of the nozzle plate of the present invention.
Fig. 3 is a schematic view of the nozzle head of the present invention.
fig. 4 is a schematic view of the structure of the valve stem of the present invention.
FIG. 5 is a schematic partial flow of methanol.
FIG. 6 is a schematic cross-sectional view of a nozzle plate.
Detailed Description
The structure of the invention is further described in detail with reference to the accompanying drawings as follows:
Referring to fig. 1 to 6, the methanol injector nozzle structure shown in the drawings comprises a nozzle body 150, a nozzle plate 140, a nozzle head 130 and a valve stem component 120, and the specific technical scheme is as follows:
The nozzle body 150 is a thin-walled cylindrical member, and the nozzle head 130 and the nozzle plate 140 are fixedly installed at the lower end of the nozzle body 150, wherein the nozzle head 130 is located above the nozzle plate 140.
The nozzle plate 140 is a thin sheet type stainless steel plate having a thickness of not more than 0.2 mm.
The nozzle plate 140 is provided with 6 ejection holes 141 and one identification hole 142. Each orifice 141 is a through-hole and is symmetrically distributed along the nozzle plate 140, and the axis of each orifice 141 is at an angle to the axis of the nozzle plate 140. The axis of each orifice 141 is gradually distant from the center line of the nozzle plate 140 from the side of the nozzle plate 140 adjacent to the nozzle head 130 to the side of the nozzle plate 140 distant from the nozzle head 130.
The identification hole 142 is a blind hole located on the center line of symmetry of the nozzle hole 141 and on the side of the nozzle plate 140 remote from the nozzle head 130.
To improve the spray effect, a counterbore 143 may be added to the nozzle plate 140 midway between the face of the nozzle plate 140 adjacent the nozzle tip 130, and the orifice 141 is disposed at the bottom of the counterbore 143 (as shown in FIG. 6), which further reduces the length of the orifice 141.
The nozzle head 130 is coaxially provided with a four-stage stepped hole and a sealing conical surface 133, the four-stage stepped hole is respectively a first hole section 131, a second hole section 132, a third hole section 134 and a fourth hole section 135 from top to bottom, the sealing conical surface 133 is arranged at the joint of the third hole section 134 and the second hole section 132, the conical angle of the sealing conical surface 133 is 90 degrees, and the flow area of the sealing conical surface 133 with the conical angle of 90 degrees is larger under the condition of the same lift.
The steel ball 122 is matched with the sealing conical surface 133, the inner diameter of the second hole section 132 is matched with the outer diameter of the steel ball 122, the steel ball 122 is positioned, the steel ball 122 is always seated on the sealing conical surface 133 due to the design, the valve rod component 120 is more convenient to assemble, and meanwhile, the sealing is more stable.
The inner diameter of the second hole section 132 is larger than that of the third hole section 134, the inner diameter of the fourth hole section 135 is also larger than that of the third hole section 134, the radial position of the jet hole 141 on the nozzle plate 140 is arranged at the inner edge of the fourth hole section 135 of the nozzle head 130, and the combination of the nozzle plate 140 and the nozzle head 130 enables the methanol to form an S-shaped flow (see fig. 5) when the methanol passes through the sealing conical surface 133, flows through the fourth hole section 135 from the third hole section 134 and then enters the jet hole 141 at the inner edge of the fourth hole section 135, thereby being more beneficial to the crushing and atomization of the fuel oil.
The valve stem member 120 is composed of a valve stem 121 and a steel ball 122.
The valve rod 121 is mainly composed of two stages of coaxial rod segments, which are a first rod segment 121a and a second rod segment 121b from top to bottom.
A first linear guide section is provided on the first shaft section 121a, which is in alignment with the nozzle body 150. In particular, an annular projection 121c is provided on the outer circumference of the first linear guide section, which projection acts together in a guiding manner. The axial length of the annular projection 121c does not exceed 1 mm.
Two ring grooves 121d are axially arranged on the outer circle of the first shaft rod section 121a at intervals, and the design of the ring grooves 121d enables the circumference of the valve rod 121 to be hydraulically balanced, so that the valve rod 121 is guided more stably.
A counter bore 121e and a valve hole 121i are arranged at the center of the valve rod 121, and the counter bore 121e is positioned above the valve hole 121i and communicated with the valve hole 121 i; a plurality of radial through holes 121h are axially spaced in the second shaft section 121b, and each radial through hole 121h communicates with the valve hole 121 i. The design of the valve hole 121i and the radial through hole 121h not only forms a methanol circulation channel, but also reduces the mass of the valve rod 121, and can effectively reduce noise and increase the response speed of the valve rod component 120.
A chamfer 121f is designed at the inlet of the counterbore 121e, and an annular groove 121g is designed at the bottom surface of the counterbore 121e and used for mounting the return spring 110.
A tapered surface 121j coaxial with the valve hole 121i is provided at the bottom of the valve hole 121 i. The steel ball 122 and the conical surface 121j are welded to form the valve rod component 120, and the welding surface of the valve rod 121 and the steel ball 122 is designed into the conical surface, so that the center of the ball of the steel ball 121 is located on the axis of the valve rod 121, and the coaxiality of the whole valve rod is better.
After the steel ball 122 and the valve rod 121 are welded, the steel ball 122 is cut into a pentagonal structure along the central symmetry, and the pentagonal structure is matched with the nozzle head 130 to form a methanol flow channel.
The valve rod component 120 adopts two-section linear guide, the first section is designed at the first shaft rod section 121a of the valve rod 120 and is positioned with the nozzle body 150 through the annular bulge 121c, the second section is designed at the steel ball 122 and is positioned with the second hole section 132 of the nozzle head 130 through the steel ball 122, so that the steel ball 122 and the conical surface 133 of the nozzle head 130 can be automatically centered without over-positioning, and the sealing performance is good.
The assembly process of the methanol injector nozzle structure of the present invention is as follows:
The nozzle head 130 is pressed into the bottom of the nozzle body 150 and laser penetration welding is performed through the annular groove 151 of the lower portion of the nozzle body 150. The nozzle plate 140 is then assembled into the nozzle body 150 from the end of the nozzle body 150 to which the nozzle tip 130 is attached and laser welded with the side having the identification hole 142 facing outward. The valve stem member 120 is inserted into the nozzle body 150 such that the steel ball 122 falls onto the sealing cone 133 of the nozzle head 130.
The working process and principle of the invention are as follows:
As shown in fig. 1, methanol enters the valve hole 121i of the valve rod 121 through the strainer 100, enters the cavity between the nozzle body 150 and the valve rod 121 from the valve hole 121i and the four radial through holes 121h of the valve rod 121, then enters the gap between the five-flat side of the steel ball 122 and the second hole section 132 of the nozzle head 130 through the gap between the valve rod 121 and the first hole section 131 of the nozzle head 130. When the electromagnet member 160 is energized, the valve rod member 120 is lifted, the spring 110 is compressed, and the methanol enters the third hole section 134 of the nozzle head 130 through the gap between the steel ball 122 and the sealing conical surface 133 of the nozzle head 130, and then enters the fourth hole section 135 to be injected into the intake pipe (not shown) through the injection hole 141 of the nozzle plate 140.
Claims (19)
1. a methanol injector nozzle structure comprises a nozzle body, a nozzle plate, a nozzle head and a valve rod component, wherein the nozzle body is a thin-wall cylindrical part, the nozzle head and the nozzle plate are fixedly arranged at the lower end of the nozzle body, and the nozzle head is positioned above the nozzle plate; the valve rod component comprises a valve rod and a steel ball fixed at the bottom of the valve rod, and is characterized in that a plurality of spray holes are formed in the nozzle plate; a four-stage stepped hole and a sealing conical surface are coaxially arranged on the nozzle head, the four-stage stepped hole is respectively a first hole section, a second hole section, a third hole section and a fourth hole section from top to bottom, the sealing conical surface is arranged at the joint of the third hole section and the second hole section, and the steel ball is matched with the sealing conical surface; the inner diameter of the second hole section is matched with the outer diameter of the steel ball, and the steel ball is positioned; the internal diameter of second hole section is greater than the internal diameter of third hole section, the internal diameter of fourth hole section is also greater than the internal diameter of third hole section, the orifice radial position on the nozzle plate sets up the fourth hole section inner edge department of nozzle head makes methyl alcohol pass through behind the sealed conical surface, forms S type route flow when flowing through the fourth hole section by third hole section reentrant fourth hole section inner edge department' S orifice, is favorable to the breakage and the atomizing of fuel more.
2. A methanol injector nozzle structure as in claim 1 wherein the axis of the orifice is angled with respect to the axis of the nozzle plate.
3. A methanol injector nozzle arrangement as claimed in claim 2, wherein the axis of the orifice tapers away from the nozzle plate centerline from the side of the nozzle plate adjacent the nozzle tip to the side of the nozzle plate remote from the nozzle tip.
4. The methanol injector nozzle structure as claimed in claim 1, wherein the number of the nozzle holes of the nozzle plate is six and is symmetrically distributed about a center line of the nozzle plate.
5. The methanol injector nozzle arrangement of claim 4, wherein a counterbore is provided in a face of the nozzle plate adjacent the nozzle tip, and six orifices are symmetrically distributed in the bottom of the counterbore.
6. A methanol injector nozzle arrangement as claimed in claim 1, wherein a flag hole is provided in a face of the nozzle plate remote from the nozzle head.
7. the methanol injector nozzle structure of claim 6, wherein the identification hole is a blind hole.
8. The methanol injector nozzle structure of claim 6, wherein the pilot hole is located on a center line of the symmetrical distribution of the nozzle holes.
9. A methanol injector nozzle structure as in claim 1 wherein the nozzle plate thickness is no more than 0.2 mm.
10. A methanol injector nozzle arrangement as claimed in claim 1, in which the sealing cone has a cone angle of 90 °.
11. the methanol injector nozzle structure according to claim 1, wherein the valve rod is composed of two stages of coaxial rod sections, namely a first rod section and a second rod section from top to bottom, a counter bore and a valve hole are arranged in the center of the valve rod, and the counter bore is positioned above the valve hole and communicated with the valve hole; and a plurality of radial through holes are axially arranged at intervals on the second shaft rod section, and each radial through hole is communicated with the valve hole.
12. A methanol injector nozzle structure as in claim 11 wherein a first linear guide section is provided on the first shaft section, the first linear guide section being in positioning with the nozzle body.
13. A methanol injector nozzle arrangement as claimed in claim 12, in which a co-directing annular projection is provided on the outer circumference of the first linear guide section.
14. A methanol injector nozzle structure as claimed in claim 13, wherein the axial length of the annular projection is no more than 1 mm.
15. The methanol injector nozzle structure of claim 11, wherein a tapered surface coaxial with the valve hole is provided at the bottom of the valve hole.
16. A methanol injector nozzle structure as in claim 15 wherein the steel ball is welded to the conical surface of the bottom of the valve stem to form a valve stem piece.
17. The methanol injector nozzle structure of claim 16, wherein after the steel ball is welded to the valve stem, the steel ball is cut in a central symmetry to form a pentagon structure, and the pentagon structure is matched with the nozzle head to form a methanol flow channel.
18. The methanol injector nozzle structure of claim 11, wherein two ring grooves are axially spaced on the outer circumference of the first shaft section, and the design of the ring grooves makes the circumference of the valve rod hydraulically balanced, so that the valve rod is guided more stably.
19. The methanol injector nozzle structure of claim 1, wherein a chamfer is provided at the inlet of the counterbore of the valve stem and an annular groove is provided at the bottom surface of the counterbore of the valve stem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896343.3A CN110541780A (en) | 2019-09-23 | 2019-09-23 | Methanol ejector nozzle structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910896343.3A CN110541780A (en) | 2019-09-23 | 2019-09-23 | Methanol ejector nozzle structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110541780A true CN110541780A (en) | 2019-12-06 |
Family
ID=68714223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910896343.3A Pending CN110541780A (en) | 2019-09-23 | 2019-09-23 | Methanol ejector nozzle structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110541780A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113153595A (en) * | 2021-03-28 | 2021-07-23 | 南岳电控（衡阳）工业技术股份有限公司 | Low hydraulic swirl injector |
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|---|---|---|---|---|
| CN113153595A (en) * | 2021-03-28 | 2021-07-23 | 南岳电控（衡阳）工业技术股份有限公司 | Low hydraulic swirl injector |
| WO2022205862A1 (en) * | 2021-03-28 | 2022-10-06 | 南岳电控衡阳工业技术股份有限公司 | Low-hydraulic-pressure swirl injector |
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