CN215633411U - Injection assembly and gas machine - Google Patents

Abstract

The utility model relates to the technical field of engines, and discloses a jet assembly and a gas engine, wherein the jet assembly comprises: the first port of the injection ring is used for being communicated with an air inlet of the pre-combustion chamber, the side wall of the injection ring is provided with a plurality of horizontal air inlet holes and a plurality of inclined air inlet holes, the horizontal air inlet holes penetrate through the side wall of the injection ring along the direction perpendicular to the central axis of the injection ring and are circumferentially distributed at intervals around the central axis, the inclined air inlet holes penetrate through the side wall of the injection ring in an inclined mode and are circumferentially distributed at intervals around the central axis of the injection ring, and the inclined air inlet holes incline towards the first port of the injection ring from the outer surface to the inner surface of the side wall of the injection ring. In the injection assembly, the horizontal air inlet holes and the inclined air inlet holes are formed in the injection ring, so that air can be uniformly introduced, the gas around the spark plug is controlled to be as concentrated as possible, the waste gas generated by the last circular combustion of the pre-combustion chamber can be controlled and discharged by inclined injection of the gas, the gas in the whole pre-combustion chamber can be mixed more uniformly, and the current circular gas combustion is facilitated.

Description

Injection assembly and gas machine

Technical Field

The utility model relates to the technical field of engines, in particular to an injection assembly and a gas engine.

Background

At present in the big cylinder diameter gas engine of current precombustion chamber, the inside gas of precombustion chamber directly gets into the precombustion chamber through the air inlet, causes the inside waste gas of precombustion chamber easily and can't thoroughly get rid of, causes the combustion chamber waste gas to remain, influences the ignition efficiency, and can also bring the problem that the gas combustion in the combustion chamber organizes badly.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a jet assembly and a gas machine, wherein a horizontal air inlet hole and an oblique air inlet hole are formed in a jet ring, so that uniform air inlet can be realized, the gas around a spark plug is controlled to be as thick as possible, the gas can be controlled to be obliquely jetted and discharged to exhaust the waste gas of the previous circulating combustion in a precombustion chamber, the ignition efficiency is favorably improved, the gas in the whole precombustion chamber can be more uniformly mixed through oblique jetting, and the combustion of the currently circulating gas is favorably realized.

In order to achieve the purpose, the utility model provides the following technical scheme:

a spray assembly, comprising:

the injection ring, the injection ring has tubular structure, the first port of injection ring is used for communicating with the air inlet of precombustor, a plurality of horizontal inlet ports and a plurality of slant inlet port have on the lateral wall of injection ring, the horizontal inlet port is along the perpendicular to the direction of the central axis of injection ring is run through the lateral wall of injection ring, and wind central axis circumference interval distribution, the slant inlet port slant is run through the lateral wall of injection ring, and wind the central axis circumference interval distribution of injection ring, the slant inlet port certainly the lateral wall surface of injection ring is rather than the inner surface orientation the first port slope of injection ring.

The injection assembly comprises an injection ring which is of a cylindrical structure, a first port of the injection ring is used for being connected and communicated with an air inlet of the pre-combustion chamber, when the injection ring is applied to a gas engine and is connected with the pre-combustion chamber, because the side wall of the injection ring is provided with a plurality of horizontal air inlet holes and a plurality of inclined air inlet holes, the horizontal air inlet holes penetrate through the side wall of the injection ring along the direction vertical to the central axis of the injection ring and are communicated with the hollow part in the injection ring so as to be communicated with the air inlet of the precombustion chamber, wherein, the central axis of the horizontal air inlet holes can be crossed with the central axis of the injection ring, a plurality of horizontal air inlet holes are distributed at intervals around the central axis of the injection ring, each horizontal air inlet hole is communicated with the air inlet channel, the fuel gas can be uniformly injected into the precombustion cavity through the plurality of horizontal air inlets, and the fuel gas around the spark plug is ensured to be as rich as possible; the oblique air inlet holes obliquely penetrate through the side wall of the injection ring, the oblique air inlet holes are inclined towards the end face of the first port of the injection ring from the outer surface of the side wall of the injection ring to the inner surface of the side wall of the injection ring, the first port of the injection ring is connected with the air inlet of the precombustion chamber, namely the oblique air inlet holes are inclined towards the air inlet of the precombustion chamber, the injection ring is arranged above the precombustion chamber, namely the oblique air inlet holes are inclined downwards from the outer surface of the side wall of the injection ring to the inner surface of the side wall of the injection ring, and the oblique air inlet holes are distributed at intervals around the central axis of the injection ring; therefore, the horizontal air inlet holes and the inclined air inlet holes are formed in the injection ring, so that air can be uniformly introduced, the gas around the spark plug is controlled to be as thick as possible, the gas can be controlled to be obliquely injected to discharge the waste gas of the last circular combustion in the precombustion chamber, the ignition efficiency is favorably improved, the gas in the whole precombustion chamber can be uniformly mixed through oblique injection, and the current circular gas combustion is favorably realized.

Therefore, among the above-mentioned injection subassembly, through set up horizontal inlet port and slant inlet port on the injection ring, can enough admit air evenly, the gas is as dense as possible around the control spark plug, can control again and utilize gas slant injection exhaust precombustion's last circulation burning waste gas on the precombustion chamber, is favorable to improving ignition efficiency, through slant injection, can also let whole precombustion intracavity gas mix more evenly, is favorable to current endless gas combustion.

Optionally, the injection ring assembly further comprises an injection ring base sleeved on the periphery of the injection ring; an annular air inlet cavity is formed between the injection ring and the injection ring base, the annular air inlet cavity is communicated with the horizontal air inlet hole and the inclined air inlet hole, and an air inlet used for air inlet is formed in one side, away from the first port of the injection ring, of the annular air inlet cavity.

Optionally, an end face of one end of the injection ring, which faces the combustion chamber body, forms a contact surface for connecting with the combustion chamber body, an annular groove circumferentially surrounding along a central axis of the injection ring is arranged on an outer peripheral side of the injection ring, an opening of each inclined air inlet hole on the outer side of the side wall of the injection ring is located in the annular groove, and in an extension direction of the central axis of the injection ring, a distance between an opening of the horizontal air inlet hole on the outer side of the side wall of the injection ring and an end face of the first port of the injection ring is greater than a distance between the annular groove and the end face of the first port of the injection ring;

optionally, a stepped groove is formed in the spray ring base, the stepped groove comprises a first through groove used for being in fit contact with the spray ring and a second through groove connected with the first through groove, the diameter of the second through groove is larger than that of the first through groove, and the annular air inlet cavity is formed between the side wall of the second through groove and the spray ring; a step is formed between the second through groove and the first through groove, a plurality of vent grooves which correspond to the inclined air inlet holes one to one are formed in the table top of the step, the vent grooves are communicated with the annular groove, and the annular groove is communicated with the annular air inlet cavity through the vent grooves.

Optionally, a through connection hole is formed in the side wall of the first through groove, and a threaded hole correspondingly matched with the connection hole is formed in the outer side of the side wall of the injection ring and used for being in threaded connection with a bolt penetrating through the connection hole in the side wall of the first through groove.

The present invention also provides a gas engine comprising: any one of the injection assemblies provided by the above technical solutions further includes:

the cylinder cover comprises a cylinder cover body, the cylinder cover body is provided with a through mounting groove, and the cylinder cover body is provided with an air inlet channel which is positioned on the periphery of the mounting groove and communicated with the mounting groove;

the pre-combustion chamber is arranged in the mounting groove and positioned at one end part of the mounting groove, and a flame jet orifice of the pre-combustion chamber is positioned at an opening at one end of the mounting groove; and a first port of a jet ring of the jet assembly is connected and communicated with an air inlet of the precombustion chamber, and a horizontal air inlet hole and an oblique air inlet hole of the jet ring are communicated with the air inlet channel.

Optionally, the gas engine further comprises: a spark plug assembly mounted in the mounting slot and located on a side of the spray ring assembly facing away from the prechamber.

Optionally, the spark plug assembly comprises a spark plug bushing and a spark plug mounted inside the spark plug bushing;

a sleeving groove is formed in the end part, facing one end of the injection assembly, of the spark plug bush, the end part, facing one end of the injection assembly, of the spark plug bush is sleeved on the outer peripheral side of the injection assembly and part of the pre-combustion chamber, so that the injection assembly and part of the pre-combustion chamber are located in the sleeving groove, and the side, facing away from the pre-combustion chamber, of the injection assembly is connected with the bottom surface of the sleeving groove; and a vent pipeline communicated with the sleeving groove is arranged on the spark plug bushing, the vent pipeline is communicated with the air inlet channel, and the vent pipeline is communicated with the annular air inlet cavity of the injection assembly.

Optionally, an air inlet pipe is installed in an air inlet channel of the cylinder cover, an air outlet of the air inlet pipe is communicated with an air vent pipeline of the spark plug bush, a one-way valve is connected to the air outlet of the air inlet pipe, and the one-way valve is used for controlling fuel gas to flow from an outlet of the air inlet pipe to the air vent channel of the spark plug bush.

Optionally, the pre-combustion chamber is provided with a first sealing ring towards the periphery of the end part of the injection assembly, and the first sealing ring is positioned between the end part of the pre-combustion chamber and the end part of the spark plug bush.

Drawings

FIG. 1 is a partial cross-sectional view of a gas engine configuration provided in accordance with an embodiment of the present invention;

FIG. 2 is a partial cross-sectional view of a gas engine configuration according to an embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of a gas engine configuration provided in accordance with an embodiment of the present invention;

FIG. 4 is a schematic diagram of a partial structure of a gas engine structure according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of an air injection ring according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a jet ring base according to an embodiment of the present invention;

FIG. 7 is a schematic cross-sectional view of an embodiment of a gas injection ring base;

FIG. 8 is a schematic cross-sectional view of an embodiment of a jet ring base;

FIG. 9 is a schematic view of an assembly structure of an injector ring and an injector ring base according to an embodiment of the present invention;

FIG. 10 is a schematic view of a precombustor according to an embodiment of the present invention;

FIG. 11 is a cross-sectional view of a precombustor according to an embodiment of the present invention;

FIG. 12 is a cross-sectional view of a spark plug insert according to an embodiment of the present invention;

icon: 1-a cylinder cover; 2-a precombustion chamber; 3-a spray assembly; 4-a spark plug assembly; 5, an air inlet pipe; 6-a one-way valve; 7-a compression nut; 8-a metal gasket; 9-cylindrical pin; 11-a cylinder head body; 12-mounting grooves; 13-an intake passage; 14-briquetting; 15-a nut; 16-a second bolt; 17-a second cylindrical pin; 21-precombustion chamber; 22-an air inlet; 23-a flame jet; 24-a first sealing ring; 25-a first annular seal groove; 26-a second pin hole; 31-a spray ring; 32-jet ring base; 33-annular air inlet chamber; 34-a bolt; 41-spark plug bush; 42-a spark plug; 43-a second seal ring; 311-horizontal air intake; 312-oblique air intake; 313-an annular groove; 314-a threaded hole; 321-a first through slot; 322-a second through slot; 323-step; 324-a vent channel; 325-connecting hole; 326 — first pin hole; 411-a sheathing slot; 412-bottom surface; 413-a vent conduit; 414-second annular seal groove; 415-spark plug screw hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.

As shown in fig. 2, 4 and 5, an embodiment of the present invention provides a spray assembly 3, which includes a spray ring 31, where the spray ring 31 has a cylindrical structure, a first port of the spray ring 31 is used for communicating with an air inlet of the prechamber 2, a side wall of the spray ring 31 has a plurality of horizontal air inlet holes 311 and a plurality of oblique air inlet holes 312, the horizontal air inlet holes 311 penetrate through the side wall of the spray ring 31 in a direction perpendicular to a central axis of the spray ring 31 and are circumferentially distributed around the central axis, the oblique air inlet holes 312 penetrate through the side wall of the spray ring 31 in an oblique manner and are circumferentially distributed around the central axis of the spray ring 31, and the oblique air inlet holes 312 are inclined from an outer surface to an inner surface of the side wall of the spray ring toward the first port of the spray ring.

The injection assembly comprises an injection ring 31, the injection ring 31 is a cylindrical structure, a first port of the injection ring 31 is used for connecting and communicating with the air inlet 22 of the precombustion chamber 2, when the injection ring is applied to the gas engine and is connected with the precombustion chamber, because the side wall of the injection ring 31 is provided with a plurality of horizontal air inlet holes 311 and a plurality of inclined air inlet holes 312, the horizontal air inlet holes 311 penetrate through the side wall of the injection ring 31 along the direction vertical to the central axis of the injection ring 31 and are communicated with the inside of the injection ring 31 in a hollow way, and further can be communicated with the air inlet 22 of the precombustion chamber 2, wherein the central axis of the horizontal air inlet holes 311 can be arranged to intersect with the central axis of the injection ring 31, the plurality of horizontal air inlet holes 311 are distributed at intervals around the central axis of the injection ring 31, each horizontal air inlet hole 311 is communicated with the air inlet channel 13, and gas can be uniformly injected into the precombustion chamber 21 of the precombustion chamber through the plurality of horizontal air inlet holes 311, ensuring that the gas around the spark plug is as rich as possible; the inclined air inlet holes 312 penetrate through the side wall of the injection ring 31 in an inclined manner, the inclined air inlet holes 312 incline from the outer surface of the side wall of the injection ring 31 to the inner surface of the side wall of the injection ring towards the end surface of the first port of the injection ring, the first port of the injection ring is connected with the air inlet of the precombustion chamber, namely the inclined air inlet holes incline towards the air inlet 22 of the precombustion chamber 2, the injection ring is arranged above the precombustion chamber, namely the inclined air inlet holes 312 incline downwards from the outer surface of the side wall of the injection ring 31 to the inner surface of the side wall of the injection ring 31, and the inclined air inlet holes 312 are distributed around the central axis of the injection ring 31 at intervals, so when the fuel gas is injected into the precombustion chamber 21 from the inclined air inlet holes 312, the fuel gas is injected downwards, and the exhaust gas circulating in the precombustion chamber 21 is discharged; therefore, the horizontal air inlet holes 311 and the inclined air inlet holes 312 are formed in the injection ring 31, so that air can be uniformly introduced, the gas around the spark plug can be controlled to be as rich as possible, the gas can be controlled to be obliquely injected to discharge the waste gas of the previous circular combustion in the precombustion chamber, the ignition efficiency can be improved, the gas in the whole precombustion chamber 21 can be uniformly mixed through oblique injection, and the current circular gas combustion is facilitated.

Therefore, among the above-mentioned injection subassembly, set up horizontal inlet port and slant inlet port on the injection ring, can enough admit air evenly, control the spark plug around the gas as dense as possible, can control again and utilize the gas slant to spray the exhaust waste gas of last circulation burning of discharge precombustion chamber, be favorable to improving ignition efficiency, through the slant injection, can also let whole precombustion intracavity gas mix more evenly, be favorable to current endless gas burning.

Specifically, the plurality of horizontal air inlet holes 311 may be uniformly distributed around the central axis of the injection ring 31 at intervals, and the plurality of inclined air inlet holes 312 may be uniformly distributed around the central axis of the injection ring 31 at intervals, so that the air inlet uniformity of the injection ring may be ensured.

As shown in fig. 1 and 4, in the above-mentioned spray assembly, the spray ring 31 assembly further includes a spray ring base 32 sleeved on the peripheral side of the spray ring 31; an annular air inlet cavity 33 is formed between the injection ring 31 and the injection ring base 32, the annular air inlet cavity 33 is communicated with each horizontal air inlet hole 311 and each inclined air inlet hole 312, an air inlet used for air inlet is formed in one side, away from the first port of the injection ring 31, of the annular air inlet cavity 33, and fuel gas can enter the horizontal air inlet holes 311 and the inclined air inlet holes 312 through the annular air inlet cavity 33 from the air inlet.

More specifically, as shown in fig. 5 and 9, the outer peripheral side of the injection ring 31 is provided with an annular groove 313 circumferentially surrounding along the central axis of the injection ring 31, the opening of each inclined air intake hole 312 outside the side wall of the injection ring 31 is located in the annular groove 313, and in the extending direction of the central axis of the injection ring 31, the distance between the opening of the horizontal air intake hole 311 outside the side wall of the injection ring 31 and the end surface of the first port of the injection ring is greater than the distance between the annular groove 313 and the end surface of the first port of the injection ring, that is, the opening of the horizontal air intake hole 311 outside the side wall of the injection ring 31 is above the annular groove 313, wherein, around the circumferential direction of the injection ring 31, the horizontal air intake hole 311 and the inclined air intake hole 312 are arranged in a staggered manner, which is more favorable for improving the uniformity of air intake; referring to fig. 9, as shown in fig. 6, 7 and 8, a stepped groove is formed in the spray ring base 32, the stepped groove includes a first through groove 321 for fitting contact with the spray ring 31 and a second through groove 322 connected to the first through groove 321, the diameter of the second through groove 322 is larger than that of the first through groove 321, and an annular air inlet cavity 33 is formed between the side wall of the second through groove 322 and the spray ring 31; a step 323 is formed between the second through groove 322 and the first through groove 321, the mesa of the step 323 is higher than the annular groove 313 on the injection ring 31, a plurality of vent grooves 324 corresponding to the oblique air inlet holes 312 one by one are formed on the mesa of the step 323, the vent grooves 324 are communicated with the annular groove 313, the annular groove 313 is communicated with the annular air inlet cavity 33 through the vent grooves 324, and then the oblique air inlet holes 312 can be communicated with the annular air inlet cavity 33 through the vent grooves 324 and the annular groove 313.

As shown in fig. 5, 7 and 9, a connecting hole 325 penetrating in a direction perpendicular to a central axis of the first through groove 321 is formed in a side wall around the first through groove 321 of the injection ring base 32, a threaded hole 314 correspondingly matching with the connecting hole 325 is formed in an outer side of the side wall of the injection ring 31, a bolt 34 may be set to pass through the connecting hole 325 on the side wall of the first through groove 321 to be in threaded connection with the threaded hole 314 on the injection ring 31, so that the injection ring 31 and the injection ring base 32 are fixed, and the threaded hole 314 is a blind hole not penetrating through the side wall of the injection ring 31, so that the tightness of the assembly of the injection ring 31 is ensured.

Based on the same inventive concept, the embodiment of the utility model also provides a gas machine, which specifically comprises: the cylinder cover 1 comprises a cylinder cover body 11, wherein the cylinder cover body 11 is provided with a through mounting groove 12, and the cylinder cover body 11 is provided with an air inlet channel 13 which is positioned on the peripheral side of the mounting groove 12 and communicated with the mounting groove 12; the pre-combustion chamber 2 is arranged in the mounting groove and positioned at one end part of the mounting groove, the pre-combustion chamber 2 is provided with a pre-combustion chamber 21, an air inlet 22 and a flame jet orifice 23, the flame jet orifice 23 is communicated with the pre-combustion chamber and positioned at one side of the pre-combustion chamber, the flame jet orifice 23 is positioned at an opening at one end of the mounting groove 12, and the air inlet 22 is communicated with the pre-combustion chamber 21 and positioned at one side of the pre-combustion chamber 2, which is far away from the flame jet orifice 23; the injection assembly 3 is installed on one side of the air inlet 22 of the pre-combustion chamber 2, the injection assembly 3 comprises an injection ring 31, a first port of the injection ring 31 is connected with the air inlet of the pre-combustion chamber 2, the injection ring 31 is communicated with the air inlet 22 of the pre-combustion chamber 2 towards the first port of the pre-combustion chamber 2, the side wall of the injection ring 31 is provided with a plurality of horizontal air inlet holes 311 and a plurality of inclined air inlet holes 312, the horizontal air inlet holes 311 penetrate through the side wall of the injection ring 31 along the direction perpendicular to the central axis of the injection ring 31 and are distributed at intervals in the circumferential direction around the central axis, the inclined air inlet holes 312 penetrate through the side wall of the injection ring 31 in the inclined direction and are distributed at intervals in the circumferential direction around the central axis of the injection ring 31, and the inclined air inlet holes 312 are inclined towards the air inlet 22 of the pre-combustion chamber 2 from the surface of the side wall of the injection ring 31 to the inner surface; the horizontal air inlet holes 311 and the inclined air inlet holes 312 are communicated with the air inlet channel 13; a spark plug assembly 4 mounted in the mounting groove 12 on the side of the injection ring 31 assembly facing away from the prechamber 2.

In the above-mentioned gas engine, including the cylinder cap, the cylinder cap includes cylinder cap body 11, cylinder cap body 11 has the mounting groove 12 that runs through from its one side, and be equipped with inlet channel 13 on cylinder cap body 11, inlet channel 13 is located mounting groove 12 week side and communicates with mounting groove 12, and along the extending direction of the central axis of mounting groove 12, from the direction of the one end of mounting groove 12 to the other end, install precombustion chamber 2 in proper order in mounting groove 12, injection subassembly 3 and spark plug subassembly 4, for the convenience of explanation, use the extending direction of the central axis of mounting groove 12 as vertical direction, and use the direction from precombustion chamber 2 to spark plug subassembly 4 as upwards explain. The precombustion chamber 2 is arranged in the mounting groove 12, and is positioned at the lower end of the mounting groove 12 along the vertical direction, the precombustion chamber 2 is internally provided with a precombustion chamber 21, the precombustion chamber 2 is provided with a flame jet orifice 23 communicated with the precombustion chamber 21, the flame jet orifice 23 on the precombustion chamber 2 is positioned at an opening at the lower end of the mounting groove 12, namely at an opening formed on the cylinder cover body 11 at the lower end of the mounting groove 12, and an air inlet 22 of the precombustion chamber 2 is positioned at the upper side of the precombustion chamber 2; on the upper side of the prechamber 2 is mounted an injection assembly 3, as shown in fig. 4 and 9, where the dashed arrows in fig. 9 indicate the direction of the gas intake in the injection ring when the gas is being fed into the prechamber. The injection assembly 3 comprises an injection ring 31, the injection ring 31 is of a cylindrical structure, the central axis of the injection ring 31 is parallel to the central line axis of the mounting groove 12, a first port of the injection ring 31 is connected and communicated with the air inlet 22 of the pre-combustion chamber 2, a second port of the injection ring, which is opposite to the first port, is opposite to the spark plug assembly, and the spark plug assembly can seal the second port of the injection ring; the side wall of the injection ring 31 is provided with a plurality of horizontal air inlet holes 311 and a plurality of inclined air inlet holes 312, the horizontal air inlet holes 311 penetrate through the side wall of the injection ring 31 along the direction perpendicular to the central axis of the injection ring 31, and are communicated with the inside of the injection ring 31 in a hollow manner, so that the horizontal air inlet holes 311 can be communicated with the air inlet 22 of the pre-combustion chamber 2, wherein the central axis of the horizontal air inlet holes 311 can be intersected with the central axis of the injection ring 31, the horizontal air inlet holes 311 are distributed at intervals around the central axis of the injection ring 31, each horizontal air inlet hole 311 is communicated with the air inlet channel 13, so that fuel gas can be uniformly injected into the pre-combustion cavity 21 through the horizontal air inlet holes 311, and the fuel gas around the spark plug is ensured to be as rich as possible; the inclined air inlet holes 312 penetrate through the side wall of the injection ring 31 in an inclined manner, the inclined air inlet holes 312 are inclined towards the air inlet 22 of the prechamber 2 from the outer surface of the side wall of the injection ring 31 to the inner surface of the injection ring, namely, the inclined air inlet holes 312 are inclined downwards from the outer surface of the side wall of the injection ring 31 to the inner surface of the injection ring, and the inclined air inlet holes 312 are distributed at intervals around the central axis of the injection ring 31, so that when the gas is injected into the prechamber 21 from the inclined air inlet holes 312, the gas is injected downwards, and the last circulating waste gas in the prechamber 21 is discharged; therefore, the horizontal air inlet holes 311 and the inclined air inlet holes 312 are formed in the injection ring 31, so that air can be uniformly introduced, the gas around the spark plug can be controlled to be as rich as possible, the gas can be controlled to be obliquely injected to discharge the waste gas of the previous circular combustion in the precombustion chamber, the ignition efficiency can be improved, the gas in the whole precombustion chamber 21 can be uniformly mixed through oblique injection, and the current circular gas combustion is facilitated.

Specifically, in order to improve the uniformity of air intake in the prechamber 21, a plurality of horizontal air intake holes 311 may be arranged evenly spaced around the central axis of the injection ring 31, and a plurality of inclined air intake holes 312 may be arranged evenly spaced around the central axis of the injection ring 31.

As shown in fig. 1 and 4, in the gas engine, the injection ring 31 assembly further includes an injection ring base 32 sleeved on the circumferential side of the injection ring 31; an annular air inlet cavity 33 is formed between the injection ring 31 and the injection ring base 32, the annular air inlet cavity 33 is communicated with each horizontal air inlet hole 311 and each inclined air inlet hole 312, an air inlet of the annular air inlet cavity 33 is communicated with the air inlet channel 13, and fuel gas can enter the horizontal air inlet holes 311 and the inclined air inlet holes 312 from the air inlet channel 13 through the annular air inlet cavity 33.

More specifically, as shown in fig. 5 and 9, an end surface of one end of the injection ring 31 facing the combustion chamber body forms a contact surface for connecting with the combustion chamber body, an outer peripheral side of the injection ring 31 is provided with an annular groove 313 circumferentially surrounding along a central axis of the injection ring 31, an opening of each inclined intake hole 312 outside a side wall of the injection ring 31 is located in the annular groove 313, and in an extending direction of the central axis of the injection ring 31, a distance between an opening of the horizontal intake hole 311 outside the side wall of the injection ring 31 and the contact surface is greater than a distance between the annular groove 313 and the contact surface, that is, an opening of the horizontal intake hole 311 outside the side wall of the injection ring 31 is above the annular groove 313, wherein the horizontal intake hole 311 and the inclined intake hole 312 are offset arranged around the circumferential direction of the injection ring 31, which is more favorable for improving intake uniformity; referring to fig. 9, as shown in fig. 6, 7 and 8, a stepped groove is formed in the spray ring base 32, the stepped groove includes a first through groove 321 for fitting contact with the spray ring 31 and a second through groove 322 connected to the first through groove 321, the diameter of the second through groove 322 is larger than that of the first through groove 321, and an annular air inlet cavity 33 is formed between the side wall of the second through groove 322 and the spray ring 31; a step 323 is formed between the second through groove 322 and the first through groove 321, the mesa of the step 323 is higher than the annular groove 313 on the injection ring 31, a plurality of vent grooves 324 corresponding to the oblique air inlet holes 312 one by one are formed on the mesa of the step 323, the vent grooves 324 are communicated with the annular groove 313, the annular groove 313 is communicated with the annular air inlet cavity 33 through the vent grooves 324, and then the oblique air inlet holes 312 can be communicated with the annular air inlet cavity 33 through the vent grooves 324 and the annular groove 313.

As shown in fig. 5, 7 and 9, a connecting hole 325 penetrating in a direction perpendicular to a central axis of the first through groove 321 is formed in a side wall around the first through groove 321 of the injection ring base 32, a threaded hole 314 correspondingly matching with the connecting hole 325 is formed in an outer side of the side wall of the injection ring 31, a bolt 34 may be set to pass through the connecting hole 325 on the side wall of the first through groove 321 to be in threaded connection with the threaded hole 314 on the injection ring 31, so that the injection ring 31 and the injection ring base 32 are fixed, and the threaded hole 314 is a blind hole not penetrating through the side wall of the injection ring 31, so that the tightness of the assembly of the injection ring 31 is ensured.

As shown in fig. 4, 8, 10, and 11, the injection ring base 32 may be connected to the prechamber 2, a first pin hole 326 may be provided in an end surface of the injection ring base 32 facing the prechamber 2, a second pin hole 26 corresponding to the first pin hole 326 may be provided in a top end surface of the prechamber 2, and the injection ring base 32 and the prechamber 2 may be fixedly connected by a cylindrical pin 9 inserted into the first pin hole 326 and the second pin hole 26 at the same time.

Specifically, as shown in fig. 2, 4 and 12, the spark plug assembly 4 includes a spark plug bush 41 and a spark plug 42 mounted inside the spark plug bush 41; a spark plug threaded hole 415 for installing and connecting the spark plug 42 is formed in the spark plug bush 41, the spark plug is installed in connection with the spark plug threaded hole 415, a sleeving groove 411 is formed in the end portion of one end, facing the injection assembly 3, of the spark plug bush 41, the spark plug threaded hole 415 is communicated with the sleeving groove 411, the end portion of one end of the spark plug bush 41 is sleeved on the outer peripheral side of the injection assembly 3 and a part of the pre-combustion chamber 2, so that the injection assembly 3 and the part of the pre-combustion chamber 2 are located in the sleeving groove 411, the side, facing away from the pre-combustion chamber 2, of the injection assembly 3 is connected with a bottom surface 412 of the sleeving groove 411, and the spark plug can ignite gas in the pre-combustion chamber 21; the spark plug bush 41 is provided with a ventilation duct 413 which is communicated with the sleeving groove 411, the ventilation duct 413 is communicated with the air inlet channel 13, and the ventilation duct 413 is communicated with the annular air inlet cavity 33 of the injection assembly 3, so that the combustion gas enters the annular air inlet cavity 33 of the injection assembly 3 from the ventilation duct 413 through the ventilation duct 413 and finally enters the pre-combustion cavity 21.

As shown in fig. 1, 2 and 4, in the gas engine, an air inlet pipe 5 is installed in an air inlet channel 13 of the cylinder head, an air outlet of the air inlet pipe 5 is communicated with an air duct 413 of the spark plug bush 41, an air outlet of the air inlet pipe 5 is connected with a check valve 6, and the check valve 6 is used for controlling the flow of gas from the outlet of the air inlet pipe 5 to the air duct 413 of the spark plug bush 41, so that the gas backflow is avoided, and the air inlet safety and reliability are ensured.

Specifically, the inlet of the air inlet channel 13 of the cylinder cover is provided with the compression nut 7 sleeved on the outer peripheral side of the air inlet pipe 5, so that the air inlet pipe 5 can be stably arranged on the cylinder cover.

Specifically, as shown in fig. 2 and 11, in order to enhance the sealing performance of the socket joint of the spark plug bush 41 and the prechamber 2, a first sealing ring 24 is arranged on the circumferential side of the end portion of the prechamber 2 facing the injection assembly 3, a first annular sealing groove 25 for installing the first sealing ring 24 is arranged on the circumferential side of the prechamber 2, the first sealing ring 24 is installed on the first annular sealing groove 25, and the first sealing ring 24 is arranged between the end portion of the prechamber 2 and the end portion of the spark plug bush 41, so that the air tightness of the socket joint of the spark plug bush 41 and the prechamber 2 is effectively enhanced, the gas leakage is avoided, and the use safety of the gas engine is favorably ensured.

Specifically, as shown in fig. 2 and 12, a plurality of second seal rings 43 are fitted around the outer peripheral side of the spark plug bush 41 at intervals, a plurality of second annular seal grooves 414 for mounting the second seal rings 43 are provided on the outer peripheral side of the spark plug bush 41, the second seal rings 43 are mounted in the second annular seal grooves 414, and the second seal rings 43 are provided on both sides of the opening of the vent pipe 413 on the outer peripheral side of the spark plug in the direction extending along the central axis of the spark plug bush 41, so that the mounting airtightness of the spark plug bush 41 in the mounting groove 12 can be ensured, gas leakage is avoided, and the use safety of the gas engine is favorably ensured.

Specifically, as shown in fig. 1, an annular step is formed outside the prechamber 2, a table surface of the annular step faces one side of the prechamber 2 having the flame injection port 23, an annular support table matched with the table surface of the annular step is arranged in the mounting groove 12 of the cylinder head body 11, the table surface of the annular support table is in matched contact with the table surface of the annular step, and the prechamber 2 is stably mounted by overlapping and abutting the annular step outside the annular step with the annular step in the mounting groove 12. Specifically, be equipped with metal gasket 8 between the mesa of annular brace table and the mesa of annular step, can make prechamber 2 installation more stable, specifically can set up metal gasket and be the copper gasket, or the gasket of other metal materials, this embodiment does not do the limitation.

Specifically, as shown in fig. 3, the cylinder cap is still including setting up the briquetting 14 that deviates from injection subassembly 3 one side at spark plug subassembly 4, the briquetting sets up another port at mounting groove 12, the setting is connected with spark plug bush 41 in spark plug subassembly 4 top, and set up second cylindric lock 17 between briquetting and the spark plug bush 41 and be connected, and be provided with the through-hole that runs through along vertical direction on the briquetting, set up the blind hole that second bolt 16 passed through on through-hole and the cylinder cap body 11 and correspond, be provided with the internal thread in the blind hole, the one end and the cylinder cap body 11 fixed connection of second bolt, the other end sets up nut 15 cooperation and is connected, can realize that the briquetting is fixed on cylinder cap body 11, press in spark plug subassembly 4's top, shutoff mounting groove 12.

It will be apparent to those skilled in the art that various changes and modifications may be made in the embodiments of the present invention without departing from the spirit and scope of the utility model. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (10)

1. A spray assembly, comprising:

the injection ring, the injection ring has tubular structure, the first port of injection ring is used for communicating with the air inlet of precombustor, a plurality of horizontal inlet ports and a plurality of slant inlet port have on the lateral wall of injection ring, the horizontal inlet port is along the perpendicular to the direction of the central axis of injection ring is run through the lateral wall of injection ring, and wind central axis circumference interval distribution, the slant inlet port slant is run through the lateral wall of injection ring, and wind the central axis circumference interval distribution of injection ring, the slant inlet port certainly the lateral wall surface of injection ring is rather than the inner surface orientation the first port slope of injection ring.

2. The spray assembly of claim 1, said spray ring assembly further comprising a spray ring base sleeved about said spray ring perimeter; an annular air inlet cavity is formed between the injection ring and the injection ring base, the annular air inlet cavity is communicated with the horizontal air inlet hole and the inclined air inlet hole, and an air inlet used for air inlet is formed in one side, away from the first port of the injection ring, of the annular air inlet cavity.

3. The spray assembly of claim 2, wherein the outer peripheral side of the spray ring is provided with an annular groove circumferentially surrounding along the central axis of the spray ring, the opening of each of the oblique air inlet holes outside the side wall of the spray ring is located in the annular groove, and the distance between the opening of the horizontal air inlet hole outside the side wall of the spray ring and the end surface of the first port of the spray ring is greater than the distance between the annular groove and the end surface of the first port of the spray ring along the extension direction of the central axis of the spray ring.

4. The spray assembly of claim 3 wherein said spray ring base has formed therein a stepped groove comprising a first channel for mating contact with said spray ring and a second channel connected to said first channel, said second channel having a diameter greater than a diameter of said first channel, said second channel having a sidewall forming said annular inlet chamber with said spray ring; a step is formed between the second through groove and the first through groove, a plurality of vent grooves which correspond to the inclined air inlet holes one to one are formed in the table top of the step, the vent grooves are communicated with the annular groove, and the annular groove is communicated with the annular air inlet cavity through the vent grooves.

5. The spray assembly of claim 4, wherein the side wall of the first through groove is provided with a through connecting hole, and the outer side of the side wall of the spray ring is provided with a threaded hole correspondingly matched with the connecting hole for being in threaded connection with a bolt penetrating through the connecting hole on the side wall of the first through groove.

6. A gas engine, comprising: the spray assembly of any of claims 1-5, further comprising:

the cylinder cover comprises a cylinder cover body, the cylinder cover body is provided with a through mounting groove, and the cylinder cover body is provided with an air inlet channel which is positioned on the periphery of the mounting groove and communicated with the mounting groove;

the pre-combustion chamber is arranged in the mounting groove and positioned at one end part of the mounting groove, and a flame jet orifice of the pre-combustion chamber is positioned at an opening at one end of the mounting groove; and a first port of a jet ring of the jet assembly is connected and communicated with an air inlet of the precombustion chamber, and a horizontal air inlet hole and an oblique air inlet hole of the jet ring are communicated with the air inlet channel.

7. The gas machine of claim 6, further comprising: a spark plug assembly mounted in the mounting slot and located on a side of the spray ring assembly facing away from the prechamber.

8. The gas engine of claim 7, wherein said spark plug assembly includes a spark plug bushing and a spark plug mounted inside said spark plug bushing;

a sleeving groove is formed in the end part, facing one end of the injection assembly, of the spark plug bush, the end part, facing one end of the injection assembly, of the spark plug bush is sleeved on the outer peripheral side of the injection assembly and part of the pre-combustion chamber, so that the injection assembly and part of the pre-combustion chamber are located in the sleeving groove, and the side, facing away from the pre-combustion chamber, of the injection assembly is connected with the bottom surface of the sleeving groove; and a vent pipeline communicated with the sleeving groove is arranged on the spark plug bushing, the vent pipeline is communicated with the air inlet channel, and the vent pipeline is communicated with the annular air inlet cavity of the injection assembly.

9. The gas engine according to claim 8, wherein an intake pipe is installed in the intake passage of the cylinder head, an air outlet of the intake pipe is communicated with the ventilation duct of the spark plug bush, and a check valve is connected to the air outlet of the intake pipe and used for controlling the flow of the fuel gas from the outlet of the intake pipe to the ventilation duct of the spark plug bush.

10. The gas machine of claim 7, characterized in that the pre-chamber is provided with a first sealing ring towards the circumference of the end of the jet assembly, said first sealing ring being located between the end of the pre-chamber and the end of the spark plug bush.

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