CN218206873U

CN218206873U - Pressure accumulation type gas injection valve

Info

Publication number: CN218206873U
Application number: CN202221703498.4U
Authority: CN
Inventors: 屈超; 李栋; 李许庆; 杨晓丽; 胡玉针
Original assignee: Chongqing Hongjiang Machinery Co Ltd
Current assignee: Chongqing Hongjiang Machinery Co Ltd
Priority date: 2022-07-04
Filing date: 2022-07-04
Publication date: 2023-01-03
Anticipated expiration: 2032-07-04

Abstract

The utility model relates to the technical field of gas engine and dual-fuel engine components, in particular to a pressure storage type gas injection valve; including nozzle, casing and connection terminal, the nozzle sets up in the lower extreme of casing, the connection terminal rigid coupling is in the side upper end of casing, the nozzle core has been cup jointed to the nozzle inside, the top of nozzle core is equipped with the regulation and control valve module, threaded connection has armature subassembly on the regulation and control valve module, the top of armature subassembly is equipped with solenoid valve subassembly, the cooperation installation between solenoid valve subassembly and the casing, electrical connection between solenoid valve subassembly and the connection terminal, the first inlet port that runs through is seted up to the upper end of casing, the second inlet port that runs through is seted up to the position that solenoid valve subassembly corresponds first inlet port. The utility model discloses have the reliability more excellent, response speed is fast, application scope is wide and the structure integrated level is high advantage.

Description

Pressure accumulation type gas injection valve

Technical Field

The utility model relates to a gas engine and dual fuel engine part technical field, in particular to hold pressure formula gas injection valve.

Background

In order to realize the national 'double-carbon' strategy, fuels such as natural gas, ammonia, hydrogen and the like become a new choice for engines. The engine gas technology of part of developed countries has been developed for tens of years, and the electric control multi-point gas injection technology is distinguished and matured day by day due to the advantages of high response speed, high control precision and the like. At present, domestic marine gas engines and dual-fuel engines are installed with an imported gas injection valve and a controller in a multi-selection mode, and domestic gas injection systems are difficult to open the market due to poor performance, poor reliability and other factors.

Therefore, the pressure accumulation type gas injection valve has the advantages of being better in reliability, high in response speed, wide in application range and high in structural integration level, and is used for accelerating the localization process of the high-speed gas injection system in China.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pressure accumulation formula gas injection valve has that the reliability is more excellent, response speed is fast, application scope is wide and the structure integrated level is high advantage.

In order to realize the purpose, the technical scheme of the utility model is as follows:

the utility model provides a pressure accumulation formula gas injection valve, includes nozzle, casing and connection terminal, the nozzle sets up in the lower extreme of casing, connection terminal rigid coupling is in the side upper end of casing, the inside nozzle core that has cup jointed of nozzle, the top of nozzle core is equipped with the regulation and control valve module, threaded connection has the armature subassembly on the regulation and control valve module, the top of armature subassembly is equipped with solenoid valve subassembly, the cooperation installation between solenoid valve subassembly and the casing, electrical connection between solenoid valve subassembly and the connection terminal, armature subassembly and solenoid valve subassembly phase-match, when the connection terminal is for solenoid valve subassembly circular telegram, the armature subassembly receives ascending magnetism to inhale the effect, drives the regulation and control valve module upward movement, and the regulation and control valve module releases the gas when the open position and flows out, and when the connection terminal gives solenoid valve subassembly outage, the armature subassembly loses magnetism and inhales the effect, and armature subassembly and regulation and control valve module downstream, the regulation and control valve module prevents the gas when the closed position and flow out, finish the gas injection, the first inlet port that runs through is seted up to the upper end of casing, the solenoid valve subassembly corresponds the position of first inlet port and sets up the second inlet port that runs through.

Specifically, an O-shaped sealing ring is further arranged at the joint between the nozzle and the shell.

Specifically, an O-shaped sealing ring is further arranged on the circumferential direction of the nozzle.

Specifically, the pressure storage cavity is further arranged inside the shell and arranged above the nozzle core, a through spray hole is formed in the position, corresponding to the second air inlet hole, of the nozzle core, a through air outlet hole is formed in the position, corresponding to the spray hole, of the nozzle core, the lower end face of the nozzle core is abutted to the upper end face of the air outlet hole, and a boss is arranged at the top of the nozzle core.

Specifically, the regulation and control valve subassembly includes valve block, spring leaf, gasket and air guide plate, the lower terminal surface of valve block and the up end looks butt of boss, spring leaf, gasket and armature subassembly are installed in proper order to the upper end of valve block, threaded connection between valve block and the armature subassembly, the lower terminal surface of spring leaf and the up end looks butt of nozzle, the up end and air guide plate, gasket looks butt of spring leaf, air guide plate's upper end is installed with casing, solenoid valve unit cooperation respectively.

Specifically, a plurality of air guide through holes are formed in the air guide plate.

Specifically, the armature subassembly includes armature, the lower terminal surface and the gasket looks butt of armature, the lower extreme of armature is equipped with pressure storage groove, the upper end of armature is equipped with air guide groove and first spring groove, the quantity and the position in air guide groove and the quantity and the position one-to-one of air guide through hole.

Specifically, still include the spring, the lower extreme and the first spring groove cooperation installation of spring.

Specifically, the lower extreme of solenoid valve subassembly is equipped with the second spring groove, the upper end and the second spring groove cooperation installation of spring.

The utility model has the advantages that:

(1) The utility model can encapsulate the corresponding nozzle core part according to the flow demand range of the actual engine to adjust the size of the spray hole, and has wide application range;

(2) The utility model discloses a set up pressure storage chamber and boss, when the gas injection valve is closed, can make the gas carry out the pressure accumulation around the boss, and make partial gas pressure act on valve block lower extreme and pressure accumulation groove, thereby provide sufficient initial pressure when the gas injection valve is opened, can improve response speed, and avoided the too high demand to solenoid valve subassembly electromagnetic force, reduced the development degree of difficulty of solenoid valve subassembly;

(3) The utility model adopts the design of the integrated valve block, integrates the traditional valve block-screw structure into the valve block with multiple functions of sealing, connecting and moving, thereby simplifying the structure and saving the space; the lower end of the valve plate abuts against the upper end face of the boss to achieve the sealing effect, and the upper end of the valve plate is fixed on the armature through threads and reciprocates along with the armature;

(4) The utility model has the advantages that the air guide groove and the air guide through hole are arranged, the air inlet throttling effect is reduced, and the resistance can be reduced in the ascending process of the armature component, so that the response speed is improved;

(5) The utility model discloses a set up spring and spring leaf, the synergism between the two has two functions that reset and two spacing, has improved gas injection valve's reliability greatly.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present invention;

fig. 2 is a schematic structural view of an armature assembly according to an embodiment of the present invention;

fig. 3 is a schematic structural view of the electromagnetic valve assembly according to the embodiment of the present invention.

Reference numerals are as follows: the air valve comprises a nozzle 1, a nozzle core 2, a spray hole 201, a boss 202, a valve plate 3, an armature 4, a solenoid valve assembly 5, a shell 6, a wire holder 7, a spring 8, an air guide disc 9, a gasket 10, a spring piece 11, an O-shaped sealing ring 12, an air accumulation cavity 102, an air outlet hole 101, an air guide through hole 901, an air accumulation groove 401, an air guide groove 402, a first spring groove 403, a second spring groove 502, a second air inlet hole 501 and a first air inlet hole 601.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a pressure accumulation type gas injection valve includes a nozzle 1, a housing 6 and a wire holder 7, the nozzle 1 is disposed at a lower end of the housing 6, the wire holder 7 is fixedly connected to an upper end of a side surface of the housing 6, a nozzle core 2 is sleeved inside the nozzle 1, a control valve assembly is disposed above the nozzle core 2, an armature assembly is connected to the control valve assembly through a thread, a solenoid valve assembly 5 is disposed above the armature assembly, the solenoid valve assembly 5 and the housing 6 are installed in a matched manner, the solenoid valve assembly 5 is electrically connected to the wire holder 7, the armature assembly is matched with the solenoid valve assembly 5, when the wire holder 7 powers on the solenoid valve assembly 5, the armature assembly is attracted by an upward magnetic force to drive the control valve assembly to move upward, the control valve assembly releases a gas to flow out when in an opening position, when the wire holder 7 powers off the solenoid valve assembly 5, the armature assembly and the control valve assembly move downward, the control valve assembly prevents the gas from flowing out when in a closing position, the gas injection is finished, a first gas inlet hole 601 is formed in an upper end of the housing 6, and a second gas inlet hole 501 formed in a position corresponding to the solenoid valve assembly 5, where the first gas inlet hole 601 penetrates through which penetrates.

Specifically, an O-ring 12 is further disposed at the joint between the nozzle 1 and the housing 6.

Furthermore, the utility model relates to a pressure accumulation formula gas injection valve adopts the roll-in technology to encapsulate, before the encapsulation step, assembles each part that relates to in the pressure accumulation formula gas injection valve according to the order, recycles the roll-in technology encapsulation and becomes the integrated into one piece structure, in this process, can the flow demand scope of actual engine, replaces corresponding nozzle core 2 before the encapsulation to the size of adjustment orifice 201, application scope is wide; in addition, set up O shape sealing washer 12 in the junction between nozzle 1 and casing 6, can improve the leakproofness of being connected between nozzle 1 and the casing 6 to, it is prior art to set up O shape sealing washer 12 in the junction between nozzle 1 and casing 6, the utility model discloses aim at pressure accumulation formula gas injection valve's structural feature.

Specifically, an O-ring 12 is further disposed on the circumference of the nozzle 1.

Further, the utility model relates to a nozzle 1 still is equipped with O shape sealing washer 12 in week for guarantee the leakproofness.

Specifically, the housing 6 is further provided with a pressure accumulation cavity 102 inside, the pressure accumulation cavity 102 is disposed above the nozzle core 2, a through nozzle hole 201 is formed in a position of the nozzle core 2 corresponding to the second air inlet 501, a through air outlet hole 101 is formed in a position of the nozzle 1 corresponding to the nozzle hole 201, a lower end surface of the nozzle core 2 abuts against an upper end surface of the air outlet hole 101, and a boss 202 is disposed at the top of the nozzle core 2.

Further, the utility model relates to a position one-to-one of first inlet port 601, second inlet port 501, orifice 201 and venthole 101.

Further, the utility model relates to a pressure accumulation chamber 102, boss 202 and pressure accumulation groove 401 mutually support, wherein, the cooperation is used between pressure accumulation chamber 102 and the boss 202, when the gas injection valve is closed, can make the gas carry out the pressure accumulation around boss 202, and make partial gas pressure do in valve block 3 lower extreme and pressure accumulation groove 401, thereby provide sufficient initial pressure when the gas injection valve is opened, response speed can be improved, and the too high demand to 5 electromagnetic forces of solenoid valve assembly has been avoided, the development degree of difficulty of solenoid valve assembly 5 has been reduced.

Specifically, the regulation and control valve subassembly includes valve block 3, spring leaf 11, gasket 10 and air guide plate 9, the lower terminal surface of valve block 3 and the up end looks butt of boss 202, spring leaf 11, gasket 10 and armature subassembly are installed in proper order to the upper end of valve block 3, threaded connection between valve block 3 and the armature subassembly, the lower terminal surface of spring leaf 11 and the up end looks butt of nozzle 1, the up end of spring leaf 11 and air guide plate 9, gasket 10 looks butt, air guide plate 9's upper end is installed with casing 6, solenoid valve subassembly 5 cooperation respectively.

Furthermore, the regulating valve component of the utility model consists of a valve block 3, a spring piece 11, a gasket 10 and an air guide disc 9, adopts the design of an integrated valve block, integrates the traditional valve block-screw structure into the valve block with multiple functions of sealing, connecting and moving, thereby simplifying the structure and saving the space; the lower end of the valve block is abutted against the upper end face of the boss to achieve the sealing effect, and the upper end of the valve block is fixed on the armature through threads and reciprocates along with the armature.

Further, the utility model relates to a lower terminal surface of valve block 3 and the up end looks butt of boss 202 can play sealed effect, and threaded connection between valve block 3 and the armature subassembly, can carry out the up-and-down motion along with the armature subassembly.

Specifically, a plurality of air guide through holes 901 are formed in the air guide plate 9; the armature assembly comprises an armature 4, the lower end face of the armature 4 is abutted to a gasket 10, a pressure storage groove 401 is arranged at the lower end of the armature 4, an air guide groove 402 and a first spring groove 403 are arranged at the upper end of the armature 4, and the number and the positions of the air guide grooves 402 correspond to those of the air guide through holes 901 one to one.

Further, the utility model relates to a quantity and the position of air guide groove 402 and the quantity and the position one-to-one of air guide through hole 901 can play the effect that reduces the throttle of admitting air to, can rise the in-process at the armature subassembly and reduce the resistance, thereby improved response speed.

Specifically, the spring device further comprises a spring 8, and the lower end of the spring 8 is installed in a matching manner with the first spring groove 403; the lower end of the electromagnetic valve component 5 is provided with a second spring groove 502, and the upper end of the spring 8 is installed in cooperation with the second spring groove 502.

Further, the utility model relates to a spring 8 and spring leaf 11, the synergism between the two has two and resets and two spacing functions, has improved gas injection valve's reliability greatly.

The utility model discloses a work flow: when the valve is used, when the wire holder 7 powers on the electromagnetic valve component 5, the armature 4 is attracted upwards to drive the valve plate 3 to move upwards together, at the moment, the spray hole 201 between the valve plate 3 and the boss 202 is opened, and fuel gas flows out; when the wire holder 7 cuts off the power of the electromagnetic valve component 5, the armature 4 loses the magnetic attraction effect, the armature 4 and the valve plate 3 move downwards under the combined action of the spring 8 and the spring piece 11, at the moment, the spray hole 201 is closed, and the gas injection is finished.

Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.

Claims

1. The utility model provides a pressure accumulation formula gas injection valve, includes nozzle, casing and connection terminal, its characterized in that, the nozzle sets up in the lower extreme of casing, the connection terminal rigid coupling is in the side upper end of casing, the inside nozzle core that has cup jointed of nozzle, the top of nozzle core is equipped with the regulation and control valve module, threaded connection has the armature subassembly on the regulation and control valve module, the top of armature subassembly is equipped with solenoid valve module, the cooperation installation between solenoid valve module and the casing, electrical connection between solenoid valve module and the connection terminal, armature subassembly and solenoid valve module phase-match, the first inlet port that runs through is seted up to the upper end of casing, the second inlet port that runs through is seted up to the position that solenoid valve module corresponds first inlet port.

2. The accumulator gas injection valve according to claim 1, wherein an O-ring seal is provided at the connection between the nozzle and the housing.

3. An accumulator gas injection valve according to claim 1, characterized in that the nozzle is further provided with an O-ring in the circumferential direction.

4. The accumulator gas injection valve according to claim 1, wherein the housing further comprises a pressure accumulation chamber disposed above the nozzle core, the nozzle core has a through hole corresponding to the second inlet hole, the nozzle has a through outlet hole corresponding to the hole, the lower end surface of the nozzle core abuts against the upper end surface of the outlet hole, and the top of the nozzle core is provided with a boss.

5. The pressure accumulating type gas injection valve according to claim 4, wherein the regulating valve assembly comprises a valve plate, a spring piece, a gasket and an air guide disc, the lower end surface of the valve plate abuts against the upper end surface of the boss, the spring piece, the gasket and the armature assembly are sequentially mounted at the upper end of the valve plate, the valve plate is in threaded connection with the armature assembly, the lower end surface of the spring piece abuts against the upper end surface of the nozzle, the upper end surface of the spring piece abuts against the air guide disc and the gasket, and the upper end of the air guide disc is respectively mounted with the shell and the electromagnetic valve assembly in a matched mode.

6. The accumulator fuel gas injection valve according to claim 5, wherein the air guide plate is provided with a plurality of air guide through holes.

7. An accumulator gas injection valve according to claim 6, characterized in that the armature assembly comprises an armature, the lower end face of the armature abuts against a gasket, the lower end of the armature is provided with a pressure accumulation groove, the upper end of the armature is provided with a gas guide groove and a first spring groove, and the number and the position of the gas guide grooves correspond to the number and the position of the gas guide through holes one to one.

8. The accumulator gas injection valve of claim 7, further comprising a spring, the lower end of the spring being fitted into the first spring groove.

9. An accumulator gas injection valve according to claim 8, wherein the lower end of the solenoid valve assembly is provided with a second spring groove, and the upper end of the spring is fitted with the second spring groove.