CN205446824U - Check valve, gas engine antechamber and gas engine - Google Patents
Check valve, gas engine antechamber and gas engine Download PDFInfo
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- CN205446824U CN205446824U CN201520922563.6U CN201520922563U CN205446824U CN 205446824 U CN205446824 U CN 205446824U CN 201520922563 U CN201520922563 U CN 201520922563U CN 205446824 U CN205446824 U CN 205446824U
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- check valve
- gas engine
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- chamber
- steel ball
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Combustion Methods Of Internal-Combustion Engines (AREA)
Abstract
The utility model discloses a check valve, gas engine antechamber and gas engine, check valve include valve body, disk seat and steel ball, and the steel ball setting is between the lower extreme and disk seat of valve body, and the disk seat includes the steel ball supporting part that has the perforating hole and have airflow channel's air flow guide portion that the perforating hole is linked together with airflow channel to the longitudinal axis of perforating hole becomes a contained angle with airflow channel's longitudinal axis. The utility model discloses the gas engine who includes the gas engine antechamber of above -mentioned check valve and include this antechamber is still provided. The utility model provides a check valve can make the steel ball produce circumference rotary motion at the in -process that rises, reduces the wearing and tearing of steel ball, disk seat and valve body, prolongs the life of check valve, set up the sealing conical face of dish spring in order to compress tightly check valve and antechamber in the upper end of check valve valve body, showing the performance that improves the gas engine antechamber and include the gas engine of this antechamber.
Description
Technical field
This utility model relates to gas engine technical field of mechanical equipment, particularly relates to a kind of check valve being applicable to gas engine gas burning system.Additionally, this utility model further relates to a kind of gas engine precombustion chamber being provided with this check valve and has the gas engine of this gas engine precombustion chamber.
Background technology
Natural gas is the energy cleaned most in fossil energy, and its main component is methane, is endowed " green energy resource " of the Nature.Natural gas engine can reduce by nitrogen oxides and the CO2 emission of 20% of 90% than Diesel engine, and can eliminate the discharge of oxysulfide and particulate matter.
Natural gas engine (being commonly called as: multiple spot gas machine) typically uses precombustion-chamber ignition mode.Wherein, the effect of check valve provides appropriate natural gas exactly in the precombustion chamber of natural gas engine, and natural gas via plug ignition, deflagrate in precombustion chamber, flame sprays into main combustion chamber by precombustion chamber nozzle, lights the natural gas of main combustion chamber.When pre-burning pipeline gaseous-pressure is more than precombustion chamber pressure, check valve is opened, and natural gas via check valve enters precombustion chamber.Owing to the natural gas fired in precombustion chamber is burnt, when pre-burning room pressure is higher than pre-burning pipeline gas pressure, closed check valve, flame will not be propagated to pre-burning pipeline.
With reference to Fig. 1, existing check valve main parts size is made up of valve body 9 ', steel ball 11 ', ball seat 12 ', locking nut 13 '.Check valve is arranged in precombustion chamber as an independent assembly.When natural gas engine is in intake stroke, gas pressure is more than in-cylinder pressure, and steel ball is in bottom, and check valve is opened；When electromotor is in compression, burning and exhaust stroke, in-cylinder pressure is more than natural gas admission pressure, and steel ball is in top, closed check valve.
Owing to the operating frequency of check valve steel ball motion frequency and electromotor is directly related, the impulsive force produced that moves back and forth of high frequency causes steel ball and valve seat inordinate wear, and the side of steel ball contacts with cryogenic natural gas, temperature about 40 DEG C；Opposite side contacts with high-temperature high-pressure fuel gas, and temperature is up to 2100 DEG C.Mechanical impact force and the superposition of thermal stress, seal position and be easily pressed into deep mixed hole, and this can cause seal failure, and the life-span of check valve reduces significantly.Once check valve seal failure, the combustion gas of High Temperature High Pressure will scurry into gas pipeline, and consequence is hardly imaginable.
Additionally, the sealing cone of check valve is very part and parcel, once seal failure, the combustion gas of High Temperature High Pressure, by entering check valve and the gap of precombustion chamber, lights the natural gas in gap, and consequence is hardly imaginable.In the course of processing, the sealing cone of check valve sealing cone and precombustion chamber uses the processing mode of bedding-in, the most accurate.With reference to Fig. 1, the installation of existing check valve is screwed into precombustion chamber by screw thread 8 ', and in installation process, check valve sealing cone can produce with the sealing cone of precombustion chamber and reverse extruding tear, and being dismounted for multiple times is as easy as rolling off a log causes sealing cone to lose efficacy.
Utility model content
In view of drawbacks described above of the prior art or deficiency, this utility model provides a kind of check valve, gas engine precombustion chamber and pre-burn engine.
This utility model provides a kind of check valve, including: valve body, valve seat and steel ball, described steel ball is arranged between the lower end of described valve body and described valve seat, described valve seat includes having the steel ball supporting part of through hole and have the airflow guide of gas channel, described through hole is connected with described gas channel, and the longitudinal axis of the longitudinal axis of described through hole and described gas channel has angle.
Based on above-mentioned check valve, this utility model additionally provides a kind of gas engine precombustion chamber, including: the precombustion chamber nozzle that pre-burning chamber body and the lower end with described pre-burning chamber body are connected, pre-burning chamber it is provided with in described precombustion chamber nozzle, being provided with above-mentioned check valve in described precombustion chamber body, the gas channel of described check valve is connected with described pre-burning chamber.
Additionally, this utility model also provides for a kind of gas engine, this gas engine includes above-mentioned gas engine precombustion chamber.
Pass through technique scheme, there is between the longitudinal axis of the longitudinal axis of the gas channel of the check valve that this utility model provides and the through hole of valve seat the design of an angle, steel ball can be made to produce the motion that rotates in a circumferential direction in uphill process, therefore steel ball is in high frequency pumps, the abrasion of steel ball, valve seat and valve body can be reduced, avoid steel ball surface to pound out the situation in hole, extend the service life of check valve；And change check valve mounting means in precombustion chamber body, by arranging disc spring in the upper end of check valve valve body to compress the sealing cone of check valve and pre-burning chamber body, being dismounted for multiple times is avoided to cause the damage of sealing cone, effectively extend the service life of check valve, significantly improve the gas engine precombustion chamber including this check valve and the performance of gas engine including this precombustion chamber.
Accompanying drawing explanation
By reading the detailed description being made non-limiting example made with reference to the following drawings, other features, purpose and advantage will become more apparent upon:
Fig. 1 is the structural representation of the check valve of prior art；
The structural representation of the check valve that Fig. 2 provides for this utility model；
Fig. 3 is the partial enlarged drawing of one-way valve seating portion in Fig. 2；
The structural representation of the gas engine precombustion chamber that Fig. 4 provides for this utility model.
Detailed description of the invention
With embodiment, the application is described in further detail below in conjunction with the accompanying drawings.It is understood that specific embodiment described herein is used only for explaining relevant utility model, rather than the restriction to this utility model.It also should be noted that, for the ease of describing, accompanying drawing illustrate only the part relevant to utility model.
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can be mutually combined.Describe the application below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
With reference to Fig. 2 and Fig. 3, the primary structure of the check valve that this utility model provides is similarly with the structure of the check valve of prior art, concrete, the check valve that this utility model provides includes: valve body 9, valve seat 12 and steel ball 11, steel ball 11 is arranged between the lower end of valve body 9 and valve seat 12, valve seat 12 includes having the steel ball supporting part of through hole and have the airflow guide of gas channel 121, through hole is connected with gas channel 121, and the longitudinal axis of the longitudinal axis of through hole and gas channel has angle.With reference to Fig. 2 and Fig. 3, steel ball 11 and valve seat 12 are arranged in locking nut 13 from top to bottom, being threaded in locking nut 13 of the lower end of valve body 9, it is achieved the installation of check valve.
Further, valve body 9 is positioned on same axis with the through hole of valve seat 12.
Further, the diameter of section of gas channel 121 is less than the diameter of through hole with gas channel connectivity part.
Further, being provided with chamber in valve body 9, the bottom of chamber is provided with opening, and steel ball 11 can be partially into opening to cut out described check valve, and the middle part of valve body 9, top or middle and upper part are provided with air inlet 10, and air inlet 10 is connected with chamber.
Unlike existing check valve, as it is shown on figure 3, the longitudinal axis of the longitudinal axis of the gas channel of check valve of the present utility model and through hole has angle.Apparently, the effect of check valve is the gas channel by having angle with the through hole of valve seat, when making combustion gas act on steel ball by the airflow guide with this gas channel, steel ball produces the motion that rotates in a circumferential direction in uphill process, steel ball its sealing position with the valve body openings of check valve in uphill process is changed stepwise, steel ball is in the reciprocating motion that high frequency is upper and lower, steel ball and valve seat, abrasion reduction between steel ball and valve body and even wearing, avoid steel ball surface and pound out the situation in hole, reliability increases, thus extend the service life of check valve, the service life of check valve rose to thousands of hours from hundreds of hour.
With reference to Fig. 4, this utility model additionally provides a kind of gas engine precombustion chamber, including: the precombustion chamber nozzle 1 that pre-burning chamber body 3 and the lower end with pre-burning chamber body 3 are connected, pre-burning chamber 2 it is provided with in precombustion chamber nozzle 1, being provided with above-mentioned check valve in pre-burning chamber body 3, the gas channel of check valve is connected with pre-burning chamber 2.
Further, in conjunction with Fig. 2 and Fig. 3, pre-burning chamber body 3 is additionally provided with spark plug mounting hole 4, is connected with pre-burning chamber 2；The upper end of pre-burning chamber body 3 connects an ignition plug sleeve 5, and the position of the corresponding above-mentioned check valve of ignition plug sleeve 5 arranges a blind hole；Pre-burning chamber body 3 is stretched out in the upper end of the valve body 9 of check valve, inserts in above-mentioned blind hole, forms sealing cone 14, compress the sealing cone between check valve and pre-burning chamber body 3 by ignition plug sleeve 5 between bottom and the pre-burning chamber body of check valve.Wherein, ignition plug sleeve is connected by 4 bolts and pre-burning chamber body.
Further, the upper end inserting the valve body in blind hole possesses six impartial milling faces for installation hexagonal 6, the outer surface installing hexagonal, matches with blind hole, facilitates ignition plug sleeve to compress the sealing cone between check valve and pre-burning chamber body.
In the optional embodiment of one, between upper end and the blind hole of valve body 9, it is additionally provided with compacting part, for compressing the sealing cone of described check valve and described pre-burning chamber body.
Optionally, above-mentioned compacting part is preferably disc spring 15, mainly utilizing it to be different from the characteristic of conventional springs, load is big, and stroke is short, requisite space is little, being applied in combination conveniently, maintenance changes the outfit easily, is highly suitable for being compressed the situation of check valve and the sealing cone of pre-burning chamber body by ignition plug sleeve, play further pressuring action, improve the sealing property between check valve and pre-burning chamber body.
Optionally, the top of check valve, and the bottom installing hexagonal 6 is provided with O 7.Have when carrying natural gas in check valve in the gap that fraction of natural gas enters check valve and pre-burning chamber body, O is set in case natural gas is upwards fled, formed and further seal.
Additionally, this utility model additionally provides a kind of gas engine, including above-mentioned gas engine precombustion chamber, good seal performance, service life are long, and stability is good so that the performance of this gas engine is improved.
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.Skilled artisan would appreciate that, utility model scope involved in the application, it is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, also should contain in the case of conceiving without departing from described utility model, other technical scheme being carried out combination in any by above-mentioned technical characteristic or its equivalent feature and being formed simultaneously.Such as features described above and (but not limited to) disclosed herein have the technical characteristic of similar functions and replace mutually and the technical scheme that formed.
Claims (10)
1. a check valve, including: valve body, valve seat and steel ball, described steel ball is arranged between the lower end of described valve body and described valve seat, it is characterised in that:
Described valve seat includes having the steel ball supporting part of through hole and has the airflow guide of gas channel, and described through hole is connected with described gas channel, and the longitudinal axis of the longitudinal axis of described through hole and described gas channel has angle.
Check valve the most according to claim 1, it is characterised in that: described valve body is positioned on same longitudinal axis with the through hole of described valve seat.
Check valve the most according to claim 2, it is characterised in that: the diameter of section of described gas channel is less than the diameter of described through hole with described gas channel connectivity part.
Check valve the most according to claim 1, it is characterised in that:
Being provided with chamber in described valve body, the bottom of described chamber is provided with opening, and described steel ball can be partially into described opening to cut out described check valve,
The middle part of described valve body, top or middle and upper part are provided with air inlet, and described air inlet is connected with described chamber.
5. a gas engine precombustion chamber, including: the precombustion chamber nozzle that pre-burning chamber body and the lower end with described pre-burning chamber body are connected, pre-burning chamber it is provided with in described precombustion chamber nozzle, it is characterized in that: be provided with the check valve described in any one of claim 1-4 in described precombustion chamber body, the gas channel of described check valve is connected with described pre-burning chamber.
Gas engine precombustion chamber the most according to claim 5, it is characterised in that:
Described pre-burning chamber body is additionally provided with spark plug mounting hole, is connected with described pre-burning chamber；The upper end of described pre-burning chamber body connects an ignition plug sleeve, and the position of the corresponding described check valve of described ignition plug sleeve arranges a blind hole；
Described pre-burning chamber body is stretched out in the upper end of the valve body of described check valve, insert in described blind hole, form sealing cone between bottom and the described pre-burning chamber body of described check valve, compress the sealing cone between described check valve and described pre-burning chamber body by described ignition plug sleeve.
Gas engine precombustion chamber the most according to claim 6, it is characterised in that:
It is additionally provided with compacting part, for compressing the sealing cone of described check valve and described pre-burning chamber body between upper end and the described blind hole of described valve body.
Gas engine precombustion chamber the most according to claim 7, it is characterised in that: described compacting part is disc spring.
9. according to the gas engine precombustion chamber described in any one of claim 6-8, it is characterised in that: the upper end inserting the described valve body in described blind hole is installation hexagonal, and the outer surface of described installation hexagonal possesses six impartial milling faces, matches with described blind hole.
10. a gas engine, it is characterised in that include the gas engine precombustion chamber described in any one of claim 5-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520922563.6U CN205446824U (en) | 2015-11-18 | 2015-11-18 | Check valve, gas engine antechamber and gas engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520922563.6U CN205446824U (en) | 2015-11-18 | 2015-11-18 | Check valve, gas engine antechamber and gas engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205446824U true CN205446824U (en) | 2016-08-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520922563.6U Active CN205446824U (en) | 2015-11-18 | 2015-11-18 | Check valve, gas engine antechamber and gas engine |
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| Country | Link |
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| CN (1) | CN205446824U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318047A (en) * | 2015-11-18 | 2016-02-10 | 中国船舶重工集团公司第七一一研究所 | One-way valve, gas engine prechamber and gas engine |
| WO2018171286A1 (en) * | 2017-03-24 | 2018-09-27 | 潍柴动力股份有限公司 | Spark plug and engine having spark plug |
-
2015
- 2015-11-18 CN CN201520922563.6U patent/CN205446824U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105318047A (en) * | 2015-11-18 | 2016-02-10 | 中国船舶重工集团公司第七一一研究所 | One-way valve, gas engine prechamber and gas engine |
| WO2018171286A1 (en) * | 2017-03-24 | 2018-09-27 | 潍柴动力股份有限公司 | Spark plug and engine having spark plug |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee after: The 711 Research Institute of China Shipbuilding Corp. Address before: 201108 Shanghai city Minhang District Huaning Road No. 3111 Patentee before: Shanghai Marine Diesel Engine Research Institute |