阅读说明：本技术 一种气体机火花塞护套 (Spark plug sheath of gas engine ) 是由 李壮 张雷 兰棠洁 陈彪 徐雪松 于 2020-11-30 设计创作，主要内容包括：本申请实施例公开了一种气体机火花塞护套,用于降低火花塞损坏的发生率。本申请实施例装置包括：火花塞护套本体；所述火花塞护套本体呈圆柱形；所述火花塞护套本体设置第一圆孔、第二圆孔以及导管,其中,所述第一圆孔的半径大于所述第二圆孔的半径；所述第一圆孔、所述第二圆孔与所述导管连通；所述第一圆孔、所述第二圆孔与所述导管的内部中空形成容纳腔；所述导管的外部设置坡面；当水流流过所述火花塞护套本体时,所述坡面用于引导所述火花塞护套本体表面水流的流动方向。(The embodiment of the application discloses a spark plug sheath of a gas engine, which is used for reducing the occurrence rate of spark plug damage. The device of the embodiment of the application comprises: a spark plug boot body; the spark plug sheath body is cylindrical; the spark plug sheath body is provided with a first round hole, a second round hole and a guide pipe, wherein the radius of the first round hole is larger than that of the second round hole; the first round hole and the second round hole are communicated with the conduit; the first round hole, the second round hole and the interior of the catheter are hollow to form an accommodating cavity; a slope surface is arranged outside the guide pipe; when water flows through the spark plug sheath body, the slope surface is used for guiding the flow direction of the water flow on the surface of the spark plug sheath body.)

1. A gas engine spark plug boot, comprising:

a spark plug boot body;

the spark plug sheath body is cylindrical;

the spark plug sheath body is provided with a first round hole, a second round hole and a guide pipe, wherein the radius of the first round hole is larger than that of the second round hole;

the first round hole and the second round hole are communicated with the conduit;

the first round hole, the second round hole and the interior of the catheter are hollow to form an accommodating cavity;

a slope surface is arranged outside the guide pipe;

when water flows through the spark plug sheath body, the slope surface is used for guiding the flow direction of the water flow on the surface of the spark plug sheath body.

2. The spark plug boot of claim 1, wherein a radius of the conduit is less than a radius of the second circular bore.

3. The spark plug boot of claim 2, wherein an angle is provided between the ramp and the conduit.

4. The spark plug boot of claim 3, wherein the ramp surface annularly surrounds the conduit.

5. The spark plug boot of claim 1, wherein an inner surface of the spark plug boot body is conformed to an outer surface of an insulator skirt of the spark plug.

6. The spark plug boot of claim 1, wherein an outer surface of the spark plug boot body is coated with a water-resistant paint.

7. The spark plug boot of claim 1, wherein the first bore is provided with a threaded bore away from a port of the second bore.

8. The spark plug boot as in any of claims 1-7, wherein the spark plug boot is made of aluminum material.

9. The spark plug boot as in any of claims 1-7, wherein the first bore is joined to the second bore by welding.

10. The spark plug boot of claim 9, wherein a weld of the first round aperture and the second round aperture is coated with a hermetic glue.

Technical Field

The embodiment of the application relates to the field of gas machines, in particular to a spark plug sheath of a gas machine.

Background

With the continuous development of the automobile industry in society, automobiles become common transportation tools for users to go out. The gasoline engines in the automobile are all provided with ignition systems, and the ignition systems can boost low-voltage direct current to enough high voltage. The compressed high-temperature and high-pressure combustible mixed gas is ignited by the spark plug of each cylinder, and the working process is finished. One of the components of the ignition system is a spark plug mounted on the cylinder head, usually one cylinder by one, with individual high speed gasoline engines equipped with 2 spark plugs per cylinder. The spark plug, although a small part, is extremely important.

The spark plug is used for introducing pulse high voltage electricity generated by the ignition coil into the combustion chamber, and igniting the mixed gas by using electric sparks generated by the electrode to complete combustion. The working environment of the spark plug is relatively severe, so that the insulator of the spark plug is easily subjected to voltage breakdown, and the electrode is easily failed due to carbon deposition. In order to prevent the spark plug from being broken down by voltage, a sheath is usually added on the outside of the insulator of the spark plug for protection and fixation.

The existing spark plug sheath is usually made of steel materials and is in a straight cylinder shape, the heat exchange coefficient of the materials is low and is positioned at about 30-50W/square meter.K, heat dissipation at the position of a spark plug mounting hole is not facilitated, and the spark plug is easy to damage and fail.

Disclosure of Invention

The embodiment of the application provides a spark plug sheath of a gas engine, which is used for reducing the occurrence rate of spark plug damage.

The embodiment of the application provides a gas engine spark plug sheath, includes:

a spark plug boot body;

the spark plug sheath body is cylindrical;

the spark plug sheath body is provided with a first round hole, a second round hole and a guide pipe, wherein the radius of the first round hole is larger than that of the second round hole;

the first round hole and the second round hole are communicated with the conduit;

the first round hole, the second round hole and the interior of the catheter are hollow to form an accommodating cavity;

a slope surface is arranged outside the guide pipe;

when water flows through the spark plug sheath body, the slope surface is used for guiding the flow direction of the water flow on the surface of the spark plug sheath body.

Optionally, the radius of the conduit is less than the radius of the second circular hole.

Optionally, a certain angle is arranged between the slope surface and the guide pipe.

Optionally, the ramp is annularly surrounding the conduit.

Optionally, the inner surface of the spark plug boot body is attached to the outer surface of the insulator skirt of the spark plug.

Optionally, the outer surface of the spark plug sheath body is coated with waterproof paint.

Optionally, a threaded hole is formed in a port of the first round hole, which is far away from the second round hole.

Optionally, the spark plug sheath is made of aluminum material.

Optionally, the first round hole and the second round hole are connected in a welding manner.

Optionally, the welding position of the first round hole and the second round hole is coated with airtight glue.

According to the technical scheme, the embodiment of the application has the following advantages:

through the spark plug sheath body that is provided with first round hole, second round hole and pipe, first round hole, the inside cavity formation of second round hole and pipe holds the chamber, the pipe part outside of spark plug sheath body is provided with domatic, be used for when rivers flow through spark plug sheath body, guide the flow direction of its surperficial rivers, so that rivers transmit the spark plug sheath with the spark plug heat, in the cooling jacket in the cylinder liner is transmitted by the spark plug sheath again, spark plug heat dispersion and radiating efficiency have been improved, thereby reduce the incidence that the spark plug damaged.

Drawings

FIG. 1 is a schematic view of the overall structure of a spark plug boot of a gas engine according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a system location of a gas spark plug boot according to an embodiment of the present application.

Detailed Description

The embodiment of the application provides a spark plug sheath of a gas engine, which is used for reducing the occurrence rate of spark plug damage.

In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for explaining relative positional relationships between the respective members or components, and do not particularly limit specific mounting orientations of the respective members or components.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the structures, the proportions, the sizes, and the like, which are illustrated in the accompanying drawings and described in the present application, are intended to be considered illustrative and not restrictive, and therefore, not limiting, since those skilled in the art will understand and read the present application, it is understood that any modifications of the structures, changes in the proportions, or adjustments in the sizes, which are not necessarily essential to the practice of the present application, are intended to be within the scope of the present disclosure without affecting the efficacy and attainment of the same.

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

Referring to fig. 1, an embodiment of the present application provides a spark plug sheath for a gas engine, including:

a spark plug sheath body 1; the spark plug sheath body 1 is cylindrical; the spark plug sheath body 1 is provided with a first round hole 11, a second round hole 12 and a guide pipe 13, wherein the radius of the first round hole 11 is larger than that of the second round hole 12; the first round hole 11 and the second round hole 12 are communicated with a conduit 13; the first round hole 11, the second round hole 12 and the conduit 13 are hollow to form a containing cavity; the outside of the conduit 13 is provided with a slope 14; the slope 14 is used for guiding the flow direction of the water flow on the surface of the spark plug sheath body 1 when the water flow flows through the spark plug sheath body 1.

The embodiment of the application provides a spark plug sheath of compriseing first round hole 11, second round hole 12 and pipe 13 triplex, first round hole 11, the chamber that holds that second round hole 12 and pipe 13 inside formed can be used for holding the spark plug, when rivers flow through spark plug sheath body 1, the heat that the spark plug produced can be taken away to rivers, and domatic 14 that sets up in the pipe 13 outside can be with the rivers that flow through on spark plug sheath body 1 surface from spark plug sheath body 1 guide to cooling jacket department, make the radiating efficiency of spark plug obtain improving, can reduce the temperature in spark plug mounting hole region fast, thereby reduce the incidence that the spark plug damaged.

In order to further improve the heat dissipation performance of the spark plug sheath, the wall surface of the spark plug sheath body 1 needs to be provided with a certain thinness, so that the heat generated by the spark plug in the spark plug sheath body 1 can be conducted on the surface of the spark plug sheath.

Optionally, the radius of the conduit 13 is smaller than the radius of the second circular hole 12.

Optionally, the slope 14 on the spark plug sheath body 1 is an upward slope extending based on the body shell, the slope 14 has a certain inclination angle, the inclination angle may be set to a plurality of angles, and the range of the specifically set angle is not limited here.

Alternatively, the ramp on the spark plug body 1 is annular around the conduit 13.

Optionally, when the spark plug matched with the spark plug sheath body 1 is arranged in the body, the inner surface of the spark plug sheath body 1 is attached to the outer surface of the skirt portion of the insulator of the spark plug, so that the spark plug sheath and the spark plug can be stably embedded and connected and are not easy to loosen.

Optionally, in order to increase the service life of the spark plug sheath and reduce the erosion of water flow to the structure, the outer surface of the spark plug sheath body 1 needs to be coated with waterproof paint.

Optionally, a threaded hole is provided at a port of the first round hole 11 far away from the second round hole 12.

Optionally, the heat exchange coefficient of the aluminum is about 236W/square meter K, which is far better than that of steel materials, so that the spark plug sheath is made of aluminum materials. The spark plug sheath may be made of a material having a higher heat exchange coefficient than the aluminum material, and the material for making the spark plug sheath having a higher heat exchange coefficient than the steel material is not limited herein.

Optionally, the first circular hole 11 and the second circular hole 12 are connected by welding.

Optionally, in order to avoid an air gap at the welding position of the first circular hole 11 and the second circular hole 12, which may affect the air tightness of the sheath, an airtight glue needs to be coated at the welding position of the first circular hole 11 and the second circular hole 12.

In practical application, the top end of the spark plug matched with the spark plug sheath body 1 is lower than the threaded hole of the first round hole 11 of the spark plug sheath body 1.

Referring to fig. 1 to 2, in practical application, when the diesel engine is in operation, the water tank pressurizes and feeds cooling water into the water jacket of the cylinder block, the cooling water absorbs heat of the cylinder while flowing, the temperature rises, the cooling water flows into the water jacket of the cylinder head, absorbs heat again, the temperature rises, and when the heat of the cylinder head 21 is transferred to the spark plug jacket body 1, the cooling water absorbs heat of the spark plug 22, further absorbs heat, the temperature rises, the heat of the cylinder head 21 and the spark plug 22 is guided into the cooling water jacket cavity 23 in the cylinder head along the slope 14 on the spark plug jacket body 1, the heat is taken away, and the temperature of the installation hole area of the spark plug 22 and the cylinder head 21 is reduced, so that the risk that the spark plug 22 damages the installation hole and.