CN206742657U - A kind of spark plug protective case and large-diameter gas engine - Google Patents

Abstract

The utility model provides a kind of spark plug protective case and large-diameter gas engine, relates generally to technical field of engines.The spark plug protective case includes protective case body, the first resilient mount, elastic component and fastening connection piece; protective case body includes main part and pre-burning portion; main part is fixedly connected with pre-burning portion; there is pre-burning cavity in pre-burning portion; accommodating hole is offered in main part; accommodating hole connects with pre-burning cavity, and pre-burning portion offers the first passage, and pre-burning cavity is in communication with the outside by the first passage.Spark plug protective case provided by the utility model, it can greatly improve engine compression ratio, while optimize plug ignition state, reduce the influence of flow perturbation, improve power so as to improve operating efficiency.The large-diameter gas engine that the utility model also provides, it can improve operating efficiency and service life, reduce production cost.

Description

A kind of spark plug protective case and large-diameter gas engine

Technical field

Technical field of engines is the utility model is related to, is fired in particular to a kind of spark plug protective case and large-diameter Gas engine.

Background technology

Into after 21st century, with energy crisis highlight and raising of the crowd to environmental consciousness, new energy Source technology field is increasingly taken seriously, and development speed is swift and violent, wherein flammable with natural gas, device in Gas, biogas, biogas etc. Gas is especially prominent for the gas internal-combustion engine utilization of fuel, while to improve the utilization rate of these fuel gas, all kinds of combustions Gas engine is using Lean Burning Technique in cylinder.

But traditional sparking plug for internal combustion engine protective case typically makes spark plug protective case and cylinder using by right-handed thread The connection sealing of lid combustion front, due to the influence of the factor such as premixed gas flow perturbation, pressure, temperature in cylinder, causes igniting not Stable, partial cylinders lid cooling water enters in cylinder and is attached on spark plug so as to influence spark plug normal ignition, shortens fire Flower plug service life.Collaborate herein for a long time the collective effect of water, cylinder head cooling water will be caused to draw into aggravating in cylinder Play plug ignition to postpone, cause engine flashback, trigger the not recoverable injury of engine and the loss of personnel's property.

Utility model content

The purpose of this utility model is to provide a kind of spark plug protective case, and it can carry engine compression ratio significantly Height, while optimize plug ignition state, reduce the influence of flow perturbation, improve power so as to improve operating efficiency.

Another object of the present utility model is to provide a kind of large-diameter gas engine, its can improve operating efficiency and Service life, reduce production cost.

What embodiment of the present utility model was realized in：

A kind of spark plug protective case, including protective case body, the first resilient mount, elastic component and fastening connection piece, The protective case body includes main part and pre-burning portion, and the main part is fixedly connected with the pre-burning portion, in the pre-burning portion With pre-burning cavity, accommodating hole is offered in the main part, the accommodating hole connects with the pre-burning cavity, the pre-burning portion The first passage is offered, the pre-burning cavity is in communication with the outside by first passage, the fastening connection piece, described One resilient mount and the elastic component are sheathed on outside the main part, the fastening connection piece and the one of the elastic component End connection, the other end of the elastic component are connected with first resilient mount.

Further, in preferred embodiment of the present utility model, it is remote that first passage is arranged at the pre-burning portion From one end of the main part, and with the centerline collineation of the accommodating hole.

Further, in preferred embodiment of the present utility model, the one end in the pre-burning portion is further opened with multiple second The pre-burning cavity is in communication with the outside by passage, multiple second passages, and multiple second passages are described in The circumference in pre-burning portion is uniformly arranged.

Further, in preferred embodiment of the present utility model, the pre-burning portion includes side wall, circle guide face and end face, The side wall is fixedly connected with the end face by the round guide face, and multiple second passages may be contained within the round guide face On.

Further, in preferred embodiment of the present utility model, the central axis of multiple second passages with By the accommodating hole central axis the first face into the first angle, the central axis and process of multiple second passages Second face of the central axis of the accommodating hole is mutually perpendicular into the second angle, first face with second face, and described One angle is 0 degree of -90 degree, and second angle is 0 degree of -90 degree.

Further, in preferred embodiment of the present utility model, first angle is 15 degree, and second angle is 15 degree.

Further, in preferred embodiment of the present utility model, the protective case body also includes multidiameter neck, described Main part is fixedly connected with pre-burning portion by the multidiameter neck.

Further, in preferred embodiment of the present utility model, the protective case body also includes location division, described fixed Position portion is fixedly installed on the main part, and the fastening connection piece mutually supports with the location division, in the location division Mandrel line is conllinear with the central axis of the accommodating hole.

Further, in preferred embodiment of the present utility model, the spark plug protective case, which also includes the second elasticity, pacifies Seat is filled, it is external that second resilient mount is sheathed on the protective case sheet, and is offseted with the fastening connection piece, the bullet The property one end of part away from first mounting seat is connected with second resilient mount.

A kind of large-diameter gas engine, including described spark plug protective case, the spark plug protective case include protective case Body, the first resilient mount, elastic component and fastening connection piece, the protective case body include main part and pre-burning portion, institute State main part to be fixedly connected with the pre-burning portion, there is pre-burning cavity in the pre-burning portion, offered in the main part accommodating Hole, the accommodating hole connect with the pre-burning cavity, and the pre-burning portion offers the first passage, and first passage is by institute State pre-burning cavity to be in communication with the outside, the fastening connection piece, first resilient mount and the elastic component are sheathed on Outside the main part, the fastening connection piece is connected with one end of the elastic component, the other end of the elastic component and described the One resilient mount connects.

The beneficial effect of the utility model embodiment is：A kind of spark plug protective case provided by the utility model, wherein protecting Sheath body includes main part and pre-burning portion, and main part is fixedly connected with pre-burning portion, has pre-burning cavity, main part in pre-burning portion Accommodating hole is inside offered, accommodating hole connects with pre-burning cavity, and pre-burning portion offers the first passage, and the first passage is empty by pre-burning Chamber is in communication with the outside, and spark plug is arranged in the first accommodating hole and can struck sparks in precombustion chamber so as to which engine compression ratio is big It is big to improve, while optimize plug ignition state, reduce the influence of flow perturbation, improve power so as to improve operating efficiency. The utility model also provides a kind of large-diameter gas engine simultaneously, and it can improve operating efficiency and service life, reduces life Produce cost.

Brief description of the drawings

, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also To obtain other related accompanying drawings according to these accompanying drawings.

Fig. 1 is the structural representation for the spark plug protective case that the utility model embodiment provides.

Fig. 2 is the structure schematic cross-sectional view for the protective case body that the utility model embodiment provides.

Fig. 3 is the structure schematic cross-sectional view of the amplification in the pre-burning portion that the utility model embodiment provides.

Fig. 4 is along IV-IV sectional view in Fig. 2.

Fig. 5 is the structural representation at the first visual angle of the fastening connection piece that the utility model embodiment provides.

Icon：100- spark plug protective cases；110- protective case bodies；111- main parts；113- multidiameter necks；115- pre-burning Portion；1111- accommodating holes；1113- location divisions；1115- grooves；The seals of 1117- the 3rd；The seals of 1131- the 4th；130- first Resilient mount；131- first seals；150- elastic components；1151- side walls；1152- justifies guide face；1153- end faces；1154- is pre- Fire cavity；The passages of 1155- first；The passages of 1156- second；The angles of 1157- first；The angles of 1158- second；170- fastenings connect Fitting；171- first；173- second；1731- fastening threads；1733- annular grooves；1735- second seals；190- second Resilient mount.

Embodiment

It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and The component of the utility model embodiment shown can be configured to arrange and design with a variety of.

Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of the utility model protection.

It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.

, it is necessary to explanation in description of the present utility model, the orientation of instruction such as term " on ", " under ", " middle part " or Position relationship be based on orientation shown in the drawings or position relationship, or the utility model product using when the side usually put Position or position relationship, it is for only for ease of description the utility model and simplifies description, rather than instruction or the device for implying meaning Or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to of the present utility model Limitation.

In addition, term " first ", " second ", " the 3rd ", " the 4th " etc. are only used for distinguishing description, and it is not intended that instruction Or imply relative importance.

In description of the present utility model, it is also necessary to explanation, unless having more specific regulation in addition and limiting, term " setting ", " connection ", " opening up " should do more broadly understanding, for example, it may be fixedly connected or be detachably connected, or It is to be integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, intermediary can also be passed through It is indirectly connected, can is the connection of two element internals.For the ordinary skill in the art, can be managed with concrete condition Solve concrete meaning of the above-mentioned term in the utility model.

Below in conjunction with the accompanying drawings, some embodiments of the present utility model are elaborated, in the case where not conflicting, under Feature in the embodiment and embodiment stated can be mutually combined.

Embodiment

Fig. 1 is the structural representation for the spark plug protective case 100 that the utility model embodiment provides.Spark plug protective case 100 are mainly used in engine, are mainly used in spark plug being installed in the cylinder head of engine, and spark plug passes through spark plug Protective case 100 is arranged in cylinder head, and spark plug protective case 100 provided by the utility model, it can be by engine compression ratio Greatly improve, while optimize plug ignition state, reduce the influence of flow perturbation, improve power so as to improve work effect Rate.

Referring to Fig. 1, the spark plug protective case 100 that the utility model embodiment provides includes protective case body 110, first Resilient mount 130, elastic component 150, the resilient mount 190 of fastening connection piece 170 and second, the first resilient mount 130, Elastic component 150, the resilient mount 190 of fastening connection piece 170 and second are sheathed on outside protective case body 110, elastic component 150 One end is connected with the first resilient mount 130, and the other end is connected with the second resilient mount 190, fastening connection piece 170 and second The one end of resilient mount 190 away from elastic component 150 mutually supports.

Preferably, in the present embodiment, first seal 131, first seal are provided with the first resilient mount 130 Lubricating oil in 131 salable engine cylinder caps, it is not only convenient for installing, dismantles and damping, and has spark plug protective case 100 There is certain anti-loose effect.

It should be noted that in other embodiment of the present utility model, spark plug protective case 100 can only include protective case sheet Body 110, the first resilient mount 130, elastic component 150 and fastening connection piece 170, one end of elastic component 150 and the first elasticity Mounting seat 130 is connected, and the other end is directly connected with fastening connection piece 170.

Preferably, in the present embodiment, elastic component 150 is spring.

Referring to Fig. 2, in the present embodiment, 110 generally hollow cylindrical type of protective case body, including main part 111, ladder Axle journal 113 and pre-burning portion 115, main part 111 are fixedly connected by multidiameter neck 113 with pre-burning portion 115, it is preferable that are one It is body formed.

In the present embodiment, accommodating hole 1111 is offered in main part 111, for housing spark plug (not shown)；Fastening connects Fitting 170, the first resilient mount 130, the second resilient mount 190 and elastic component 150 are sheathed on the main part 111 Outside.

Location division 1113 is convexly equipped with main part 111, fastening connection piece 170 is mutually supported with location division 1113 and is connected, fixed Fluted 1115 are opened up in position portion 1113, it is preferable that groove 1115 is opened in the middle part of location division 1113, is set in groove 1115 There is the 3rd seal 1117, the 3rd seal 1117 offsets with location division 1113 with engine cylinder cap respectively, for sealing Cooling water in engine cylinder cap.

Preferably, in the present embodiment, the central axis of accommodating hole 1111, the central axis of protective case body 110 and The central axis of location division 1113 is conllinear.

In the present embodiment, the central axis upright of multidiameter neck 113 and protective case body 110 is set, and passes through the company of fastening Fitting 170 makes the journal surface of multidiameter neck 113 and the cascaded surface of engine cylinder cap mutually support and realize pre- tightening seal, preferably Ground, sealing copper backing can also be set between multidiameter neck 113 and engine closure, strengthen its sealing effectiveness.

It should be noted that in the utility model, outer shaft size and the engine cylinder cap inwall of spark plug protective case 100 Installation matching relationship can be small fit tolerance interference fits or gap coordinate, be advantageous to installation spark plug protective case Guide effect is played during 100 to be also prevented from preventing from falling partially during installation.

Preferably, in the present embodiment, the 4th seal 1131, the 4th seal 1131 are provided with multidiameter neck 113 For supporting multidiameter neck 113 and engine cylinder cap inwall, formed in sealing contact.

Referring to Fig. 3, in the present embodiment, pre-burning portion 115 includes side wall 1151, circle guide face 1152 and end face 1153, side wall 1151 are fixedly connected by circle guide face 1152 with end face 1153, it is preferable that are formed in one；Side wall 1151, circle guide face 1152 with And end face 1153 surrounds pre-burning cavity 1154 jointly, pre-burning cavity 1154 connects with accommodating hole 1111.

Offer the first passage 1155 on the end face 1153 in pre-burning portion 115, the first passage 1155 is by pre-burning cavity 1154 are in communication with the outside, preferably, the central axis of the first passage 1155 is conllinear with the central axis of accommodating hole 1111.

It should be noted that in other embodiment of the present utility model, for pre-burning portion 115 concrete structure do not make it is any Limit, it is only necessary to there is pre-burning cavity 1154 in pre-burning portion 115, the first passage 1155 is arranged at pre-burning portion 115 away from main part 111 one end.

In the present embodiment, multiple second passages 1156 are offered in pre-burning portion 115, multiple second passages 1156 are along pre- The circumference in combustion portion 115 is uniformly arranged.

Preferably, in the present embodiment, multiple second passages 1156 may be contained within justifying on guide face 1152.

In the present embodiment, the central axis of multiple second passages 1156 with the central axis by accommodating hole 1111 First face (figure is not marked) is into the first angle 1157, and the central axis of multiple second passages 1156 is with passing through in accommodating hole 1111 The second face (figure is not marked) of mandrel line is into the second angle 1158 (referring to Fig. 4), and the first face is mutually perpendicular to the second face, and first Angle 1157 is 0 degree of -90 degree, and the second angle 1158 is 0 degree of -90 degree.

It should be noted that in the present embodiment, the first face was the central axis of accommodating hole 1111 and perpendicular to shown in Fig. 2 Plane；Second face was plane shown in the central axis of accommodating hole 1111 and parallel Fig. 2.

In the present embodiment, the first angle 1157 is 15 degree, and the second angle 1158 is 15 degree；Second passage 1156 is inclination Set, be advantageous to make flame not be that same plane sprays, and can be sprayed with pilot flame to ideal orientation, be advantageous to mixing combustion Gas fully burns.

It should be noted that in preferred embodiment of the present utility model, the tool of the first angle 1157 and the second angle 1158 Body angle is not limited in any way.

Preferably, in the present embodiment, the second passage 1156 is four.

It should be noted that in the utility model other embodiment, the quantity of the second passage 1156 is not limited in any way.

Referring to Fig. 5, in the present embodiment, 170 generally hollow cylindrical structure of fastening connection piece, including first 171 With second 173, first 171 is fixedly connected with second 173, and first 171 and second 173 is sheathed on protective case sheet On the first paragraph of body 110.

Preferably, in the present embodiment, first 171 is formed in one with second 173.

In the present embodiment, the exterior circumferential of second 173 is provided with fastening thread 1731, and fastening connection piece 170 is by tight Gu screw thread 1731 is connected with engine cylinder cap；It is internally provided with annular groove 1733 for second 173, sets in annular groove 1733 There is second seal 1735, second seal 1735 offsets with second 173 and protective case body 110 respectively, for close The lubricating oil sealed at the top of engine cylinder cap.

Preferably, in the present embodiment, the central axis of annular groove 1733 is conllinear with the central axis of second 173.

In the present embodiment, first 171 is outer-hexagonal nut structure, is easy to fastening connection piece 170 passing through fastening thread 1731 are connected with engine cylinder cap, are to be provided convenience in installation process.

The operation principle of spark plug protective case 100 that the present embodiment provides is：Protective case body 110 include main part 111, Multidiameter neck 113 and pre-burning portion 115, accommodating hole 1111 is offered in main part 111, spark plug is placed in accommodating hole 1111, There is pre-burning cavity 1154 in pre-burning portion 115, accommodating hole 1111 connects with pre-burning cavity 1154, enables spark plug in pre-burning cavity Lighted a fire in 1154；1731 direct screw thread of fastening thread on protective case body 110 pass through fastening connection piece 170 second 173 Connected mode is covered installed in cylinder, while the one end of the first resilient mount 130 is connected with elastic component 150, the other end First seal 131 is installed, first seal 131 is by elastic component 150 and engine cylinder cap elastic connection and seals Lubricating oil in engine cylinder cap.

The spark plug protective case 100 that the present embodiment provides, spark plug protective case 100 are directly installed by fastening thread 1731 Covered in cylinder, so as to thoroughly isolate cooling water and high-temperature high-pressure fuel gas in engine cylinder cap, ensure spark plug Normal ignition and service life；When installing or removing spark plug protective case 100, the first of rotational fastener connector 170 is only needed Portion 171, without rotating protective case body 110, so as to improve the uniform force of spark plug protective case 100 and engine cylinder cap Degree, while using the transmission power and moment of torsion at the transmission middle part of location division 1113, reduce spark plug protective case 100 and install, dismantled The difficulty of journey；Also using first seal 131 and the effect of elastic component 150, make spark plug protective case 100 and engine cylinder cap Elastic connection seals, and is not only convenient for installing, dismantles and damping, and spark plug protection has certain anti-loose effect；Utilize rank The central axis upright of terraced axle journal 113 and protective case body 110 is set, and passes through the fastening thread in fastening connection piece 170 1731 make the cascaded surface of the journal surface of multidiameter neck 113 and engine cylinder cap mutually support and realize pre- tightening seal, then in rank Sealing copper backing is set between terraced axle journal 113 and engine closure, strengthens its sealing effectiveness, at the same the 4th seal 1131 with The contact sealing of engine cylinder cap inwall, it is high that both dual-seal collective effects thoroughly completely cut off high temperature in cylinder head cooling water and cylinder Compression ignition gas；Spark plug is lighted a fire in pre-burning cavity 1154, reduces the influence of the factors such as flow perturbation, pressure, temperature.Precombustion Gas sprays to cylinder by first passage 1155 and four the second passages 1156, puts air mixture in gas cylinder, simultaneously Five pilot hole injection directions are air mixture flow direction in cylinder, so as to which pilot flame develops to ideal orientation, are advantageous to Air mixture is burnt.

In summary, large-diameter gas engine provided by the utility model includes the spark plug protection in above-described embodiment Set 100；Large-diameter gas engine can improve operating efficiency and service life, reduce production cost.

Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.

Claims (10)

1. a kind of spark plug protective case, it is characterised in that including protective case body, the first resilient mount, elastic component and tight Be connected fitting, and the protective case body includes main part and pre-burning portion, and the main part is fixedly connected with the pre-burning portion, described There is pre-burning cavity in pre-burning portion, accommodating hole is offered in the main part, the accommodating hole connects with the pre-burning cavity, institute State pre-burning portion and offer the first passage, the pre-burning cavity is in communication with the outside by first passage, described to be fastenedly connected Part, first resilient mount and the elastic component are sheathed on outside the main part, the fastening connection piece with it is described One end connection of elastic component, the other end of the elastic component are connected with first resilient mount.

2. spark plug protective case as claimed in claim 1, it is characterised in that first passage is arranged at the pre-burning portion Away from the main part one end, and with the centerline collineation of the accommodating hole.

3. spark plug protective case as claimed in claim 2, it is characterised in that the one end in the pre-burning portion is further opened with multiple The pre-burning cavity is in communication with the outside by two passages, multiple second passages, and multiple second passages are along institute The circumference for stating pre-burning portion is uniformly arranged.

4. spark plug protective case as claimed in claim 3, it is characterised in that the pre-burning portion includes side wall, circle guide face and end Face, the side wall are fixedly connected with the end face by the round guide face, and multiple second passages may be contained within the circle On guide face.

5. spark plug protective case as claimed in claim 4, it is characterised in that the central axis of multiple second passages is equal The first face with the central axis by the accommodating hole is into the first angle, the central axis and warp of multiple second passages The second face of the central axis of the accommodating hole is crossed into the second angle, first face is mutually perpendicular to second face, described First angle is 0 degree of -90 degree, and second angle is 0 degree of -90 degree.

6. spark plug protective case as claimed in claim 5, it is characterised in that first angle is 15 degree, second folder Angle is 15 degree.

7. the spark plug protective case as described in claim any one of 1-6, it is characterised in that the protective case body also includes rank Terraced axle journal, the main part are fixedly connected with pre-burning portion by the multidiameter neck.

8. spark plug protective case as claimed in claim 1, it is characterised in that the protective case body also includes location division, institute State location division to be fixed on the main part, the fastening connection piece mutually supports with the location division, in the location division Mandrel line is conllinear with the central axis of the accommodating hole.

9. spark plug protective case as claimed in claim 1, it is characterised in that the spark plug protective case also includes the second elasticity Mounting seat, it is external that second resilient mount is sheathed on the protective case sheet, and is offseted with the fastening connection piece, described The one end of elastic component away from first resilient mount is connected with second resilient mount.

10. a kind of large-diameter gas engine, it is characterised in that protected including the spark plug as described in claim any one of 1-9 Sheath.