CN201708439U

CN201708439U - Industrial spark plug

Info

Publication number: CN201708439U
Application number: CN2010202415321U
Authority: CN
Inventors: 谢菊泉; 谢文杰
Original assignee: ZHUZHOU TORCH SPARK PLUG CO Ltd
Current assignee: ZHUZHOU TORCH SPARK PLUG CO Ltd
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2011-01-12
Anticipated expiration: 2020-06-30

Abstract

An industrial spark plug comprises a ceramic component, a casing component, a central electrode portion and a lateral electrode portion and adopts an annular noble metal electrode ignition structure. An end of a central electrode post of the central electrode portion is an annular central electrode, an annular iridium-platinum alloy sheet is welded outside the annular central electrode, an annular sleeve is arranged on an outer ring corresponding to the annular iridium-platinum alloy sheet, an annular step is arranged at the position, corresponding to the central electrode, inside the sleeve, and a complete iridium-platinum alloy ring is also welded on the lateral surface, towards the central electrode, of the step to form an annular iridium-platinum alloy central electrode ring. An annular iridium-platinum alloy lateral electrode is inlaid in an inner ring of the annular sleeve and combined with an end of the sleeve. All the annular periphery of the electrode of the industrial spark plug can spark, the industrial spark plug is fine in processing performance of a product, reduces processing difficulty of the central electrode and the lateral electrode, increases sparking area by 57% compared with the overseas, and greatly prolongs the service life.

Description

A kind of industrial spark plugs

Technical field:

The utility model relates to a kind of structure of sparking-plug electrode, refers in particular to a kind of structure of industrial spark plugs electrode, is mainly used in industrial spark plugs.

Background technology:

Continuous development along with industrial technology, the application of spark plug has run far deeper than and just has been used for the road vehicle engine art, present many industrial sites, all using spark plug to realize electronic ignition as industrial operating mode places such as fuel gas generation, gas industry combustion furnace, industrial fuel oil stoves, helping temperature control like this burning.

The industrial spark plugs operational environment has three height: air pressure height, ignition voltage height, temperature height, so material and shape to the ignition end have very high requirement, common industrial spark plugs has only about 3000 hours useful life, by observation to existing industrial spark plug, the arcing end of finding existing industrial spark plug generally adopts four limit fire, be about to central electrode and make the central electrode of a square shape, it is corresponding with it that each limit correspondence on central electrode four limits is provided with a lateral electrode, lateral electrode is with a sleeve outward, constitutes four limits fire structure; But the industrial spark plug of finding this four limits fire structure in actual use is shorter relative useful life, its main cause be exactly the structure of electrode be not quite reasonable, the sleeve and the central electrode processing technology complexity of this four limits fire structure, sleeve need cut into the stepped hole line four small stairs; Central electrode needs turning, drill centers, line to cut into four small electrodes, welds sheet platinoiridita electrode again; Difficulty of processing is big, is difficult to guarantee precision, occurs deviation easily, makes that the discharge of spark plug is inhomogeneous, causes occurring the central electrode scaling loss easily, and influences the useful life of spark plug; And the processing cost height of four limit fire structures.Therefore necessary this is further improved.

The utility model content

The purpose of this utility model is exactly the deficiency at existing industrial spark plugs, provides a kind of structure of central electrode more reasonable, the infant industry spark plug of spark plug longer service life.

The purpose of this utility model is achieved through the following technical solutions, a kind of industrial spark plugs, adopt annular noble metal electrode ignition structure, comprise the porcelain assembly, housing unit, central electrode part and lateral electrode part, the termination of the central electrode post of central electrode part is annular shape central electrode, at annular irid(i)oplatinum sheet of annular shape central electrode external welding, the corresponding outer ring of annular therewith irid(i)oplatinum sheet, be provided with an annulus, with the central electrode opposite position one ring-shaped step is arranged in the sleeve, also be welded with a whole circle irid(i)oplatinum towards the side of central electrode at step, form an annular irid(i)oplatinum central electrode circle; Make the electrode of spark plug become the annular electrode structure that whole circle can arcing.Annular irid(i)oplatinum lateral electrode is welded in the stepped hole of annular sleeve, and the porcelain assembly of spark plug and housing unit and existing conventional porcelain assembly and housing unit can be general.

The beneficial effects of the utility model are: the utility model is can both arcing around the electrode annular, the processing performance of product is good, central electrode and lateral electrode difficulty of processing reduce, and assembling need not be to point, the processing performance of product improves, the arcing area of spark plug that the most important thing is this structure than external increase by 57%, improve so improve greatly its useful life, can use more than 5000 hours.

Description of drawings:

Fig. 1 is existing general industry spark plug configuration schematic diagram;

Fig. 2 is existing general industry spark plug configuration end view;

Fig. 3 is a structural representation of the present utility model;

Fig. 4 is a structure side central electrode structure cutaway view of the present utility model;

Fig. 5 is the end face structure schematic diagram of electrode part of the present utility model.

Among the figure: 1, central electrode part, 2, the lateral electrode part, 3, the central electrode post, 4, the termination, 5, annular shape central electrode, 6, irid(i)oplatinum central electrode circle, 7, annular irid(i)oplatinum lateral electrode; 8, sleeve; 9, porcelain assembly; 10, housing unit.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

Embodiment one

Shown in Fig. 2-4, a kind of industrial spark plugs, adopt annular noble metal electrode ignition structure, comprise porcelain assembly 9, housing unit 10, central electrode part 1 and lateral electrode part 2, the termination 4 of the central electrode post 3 of central electrode part 1 is annular shape central electrode 5, outside annular shape central electrode 5, be with a whole circle irid(i)oplatinum central electrode circle 6, form an annular irid(i)oplatinum central electrode circle; With the irid(i)oplatinum central electrode circle 6 corresponding outer rings of annular, be provided with the annular irid(i)oplatinum lateral electrode 7 of a whole circle, make the electrode of spark plug become the annular electrode structure that whole circle can arcing.Annular irid(i)oplatinum lateral electrode 7 is embedded in the inner ring of sleeve 8 of annular, lumps together with the termination knot of sleeve 8.The porcelain assembly 9 of spark plug is identical with housing unit with existing conventional porcelain assembly with housing unit 10.Its feature is can both arcing around the electrode, the processing performance of product is good, central electrode and lateral electrode difficulty of processing reduce, and assembling need not be to point, the processing performance of product improves, the arcing area of spark plug that the most important thing is this structure than external increase by 57%, improve so improve greatly its useful life, can use more than 5000 hours.

The sleeve of this annular electrode spark plug and central electrode processing technology are simple, the machining process of sleeve: adopt the high-temperature resistant nickel-chrome alloy material to bore the hole of the different sizes in two, bore the stepped hole that is used to weld annular platinoiridita electrode again, last car becomes cylindrical, and external sleeve also needs the stepped hole line is cut into four small stairs, the processing technology complexity.

The processing of central electrode is simpler than external processing, after only the need car becomes cylindrical, can weld annular platinoiridita electrode, and external central electrode then needs turning, drill centers, line to cut into four small electrodes, welds sheet platinoiridita electrode again.

Claims

1. industrial spark plugs, comprise the porcelain assembly, housing unit, central electrode part and lateral electrode part, it is characterized in that: adopt annular noble metal electrode ignition structure, the termination of the central electrode post of central electrode part is annular shape central electrode, at annular irid(i)oplatinum sheet of annular shape central electrode external welding, the corresponding outer ring of annular therewith irid(i)oplatinum sheet, be provided with an annulus, with the central electrode opposite position one ring-shaped step is arranged in the sleeve, also be welded with a whole circle irid(i)oplatinum towards the side of central electrode at step, form an annular irid(i)oplatinum central electrode circle.

2. industrial spark plugs as claimed in claim 1 is characterized in that: annular irid(i)oplatinum lateral electrode is embedded in the inner ring of sleeve of annular, lumps together with the termination knot of sleeve.