CN201282323Y - Flame proof wiring box for spark plug and ignition cable interface - Google Patents
Flame proof wiring box for spark plug and ignition cable interface Download PDFInfo
- Publication number
- CN201282323Y CN201282323Y CNU2008201858876U CN200820185887U CN201282323Y CN 201282323 Y CN201282323 Y CN 201282323Y CN U2008201858876 U CNU2008201858876 U CN U2008201858876U CN 200820185887 U CN200820185887 U CN 200820185887U CN 201282323 Y CN201282323 Y CN 201282323Y
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- CN
- China
- Prior art keywords
- spark plug
- pressure cap
- junction box
- shell
- cable interface
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to a flameproof junction box for interfaces of a spark plug and an ignition cable. The flameproof junction box is characterized in that the flameproof junction box is formed by a housing (5) and a pressing cap (2); the front end of the housing (5) is connected with the back end of the pressing cap (2); a seal ring I (3) is embedded in the position of an adjoining plane (2) at the front ends of the housing (5) and the pressing cap (2); a seal ring II (10) is embedded between the pressing cap (2) and an insulating sleeve on the spark plug of the high-voltage insulating spark plug component; a blind hole is formed at the back end of the housing (5); sealing filler (6) and a gland (9) are embedded in the blind hole; a gland nut (8) is arranged behind the gland (9); and the gland nut (8) are in threaded connection with the blind hole at the back end of the housing (5). The utility model has the explosion prevention function, and the junction box provided by the utility model has the function of flame resisitance.
Description
(1) technical field
The utility model relates to the terminal box that is connected between a kind of high voltage insulation spark plug and the firing cable, be mainly used in the ignition system safety problem of the combustion apparatus that uses in classes such as solving oil field, colliery, offshore platform or two class hazardous areas and zone, be specially adapted to HTHP combustion apparatus-composite heat carrier generator product.The technical field that belongs to combustion apparatus.
(2) background technology
The high-energy ignition system course of work is as follows usually: power supply adopts 220V or 110V/50HZ alternating current, through transformer boost and the silicon stack rectification after become direct current, charge to energy storage capacitor through current-limiting resistance again.Through behind the certain hour, when the voltage on the energy storage capacitor reaches the discharge tube puncture voltage, discharge tube is breakdown and discharge, energy stored on the energy storage capacitor is added on the semiconductor spark plug by discharge tube, inductance, firing cable, conducting rod, and make semiconductor spark plug metal end face produce strong spark, thereby the mixture of fire fuel and oxygen-containing gas.After the energy on the energy storage capacitor had discharged, discharge tube recovered blocking state, repeats the above-mentioned course of work later on.
In the actual ignition process, energy on the energy storage capacitor discharges by semiconductor spark plug metal end face and produces spark, because the whole outer metallic surface of semiconductor spark plug is an one, therefore, when the high-energy ignition system worked, whole semiconductor spark plug outer metallic surface became the negative pole of high-energy ignition system.Like this, when the spark plug metal surface directly links to each other by screw thread or method of clamping with equipment, can cause the negative pole of ignition system directly to communicate with ground wire, thereby when spark plug internal semiconductor performance change or when other problem occurring, connect the loose contact position at spark plug, spark plug and igniting interface and other and exist externally sparking dangerous, in the hazardous area that has natural gas, coal gas and other hazardous gas and the zone can't use.
(3) summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, and a kind of spark plug and explosion suppression junction box of ignition cable interface with flame proof function is provided.
The purpose of this utility model is achieved in that a kind of spark plug and explosion suppression junction box of ignition cable interface, described explosion-proof connection box is surrounded by shell and pressure cap, the shell front end is connected with the pressure cap rear end, and set sealing ring I at shell front end and pressure cap composition surface place, between the insulating sleeve on the spark plug of pressure cap and described spark plug assembly, set sealing ring II, sealing ring I is used to strengthen sealing effectiveness, prevents that external leaks gas from entering terminal box inside.Simultaneously, for guaranteeing the other end sealing, prevent that hazardous gas enters interface position in the external environment condition, be provided with a blind hole at described outer casing back, be equipped with airtight and watertight padding and gland in the blind hole, be provided with clamp nut behind the gland, this clamp nut is connected with the blind threaded of outer casing back.Form hermetically-sealed construction by airtight and watertight padding, gland and clamp nut.Like this, the connecting interface of whole spark plug and firing cable has just been realized the flame proof protection by above-mentioned utility model.
The utility model is a kind of flame proof design that connecting interface carried out between the metal threaded and firing cable to the semiconductor spark plug afterbody, can effectively solve the sparking hidden danger at interface position, make it Secure Application in a class or two class hazardous area and zones such as natural gas, coal gas, offshore platforms.
(4) description of drawings
Fig. 1 is the general structure schematic diagram of the utility model spark plug and explosion suppression junction box of ignition cable interface.
Fig. 2 is structure one schematic diagram of pressure cap of the present utility model.
Fig. 3 is the A-A cut-away view of Fig. 2.
Fig. 4 is structure two schematic diagrames of pressure cap of the present utility model.
Fig. 5 is the B-B cut-away view of Fig. 4.
Among the figure: high voltage insulation spark plug assembly 1, pressure cap 2, sealing ring I3, interface module 4, shell 5, airtight and watertight padding 6, firing cable 7, clamp nut 8, gland 9, sealing ring II10.
Referring to Fig. 1, Fig. 1 is the utility model spark plug and explosion suppression junction box of ignition cable interface structural representation.As can be seen from the figure, interface module 4 is connecting interfaces of high voltage insulation spark plug assembly 1 and firing cable 7, by this kind connected mode, the outer metallic surface of high voltage insulation spark plug effectively can be connected together with the 3rd layer of gauze screen of firing cable 7 by screw thread.For preventing the exposed sparking of 4 pairs of external environment conditions of interface module, be outside equipped with an explosion-proof connection box at described interface module 4, this explosion-proof connection box is surrounded by the pressure cap 2 of shell 5 and high voltage insulation spark plug assembly 1, described shell 5 front ends are shaped on external screw thread, be threaded by the internal thread of this external screw thread with described pressure cap 2 rear ends, and set sealing ring I3 at shell 5 front ends and pressure cap 2 composition surfaces place, between the insulating sleeve on the spark plug of pressure cap 2 and described high voltage insulation spark plug assembly 1, set sealing ring II10.Simultaneously, be provided with a blind hole, be equipped with airtight and watertight padding 6 and gland 9 in the blind hole, be provided with clamp nut 8 behind the gland 9, the blind threaded connection of this clamp nut 8 and shell 5 rear ends in described shell 5 rear ends.Form hermetically-sealed construction by airtight and watertight padding 6, gland 9 and clamp nut 8.
Described pressure cap 2 has two kinds of versions, and a kind of is that pressure cap 2 front and back two ends are shaped on external screw thread and internal thread respectively, and outer surface is shaped on pulling mouthful so that install, as Fig. 2～3 of four jiaos, hexagonal or other form; Another kind is that pressure cap 2 front ends are shaped on external screw thread, and ring flange is made in the rear end, and outer surface is shaped on pulling mouthful so that install of four jiaos, hexagonal or other form.Described shell 5 front ends are shaped on ring flange, are connected sealing by bolt and liner with described pressure cap 2.As Fig. 4～5.To guarantee the flame proof protection of spark plug tailing screw flight and firing cable interface.
Claims (5)
1, a kind of spark plug and explosion suppression junction box of ignition cable interface, it is characterized in that described explosion-proof connection box is surrounded by shell (5) and pressure cap (2), described shell (5) front end is connected with pressure cap (2) rear end, and set sealing ring I (3) at shell (5) front end and pressure cap (2) composition surface place, between the insulating sleeve on the spark plug of pressure cap (2) and described high voltage insulation spark plug assembly, set sealing ring II (10), be provided with a blind hole in described shell (5) rear end, be equipped with airtight and watertight padding (6) and gland (9) in the blind hole, be provided with clamp nut (8) behind the gland (9), the blind threaded connection of this clamp nut (8) and shell (5) rear end.
2, a kind of spark plug according to claim 1 and explosion suppression junction box of ignition cable interface, it is characterized in that described pressure cap (2) rear end is shaped on internal thread, shell (5) front end is shaped on external screw thread, is threaded by the internal thread of this external screw thread with described pressure cap (2) rear end.
3, a kind of spark plug according to claim 2 and explosion suppression junction box of ignition cable interface is characterized in that described pressure cap (2) outer surface is shaped on four jiaos or hexagonal and pulls mouth.
4, spark plug according to claim 1 and explosion suppression junction box of ignition cable interface, it is characterized in that: described pressure cap (2) rear end is shaped on ring flange, shell (5) front end is shaped on ring flange, and described ring flange is connected sealing by bolt and liner with described pressure cap (2).
5, a kind of spark plug according to claim 4 and explosion suppression junction box of ignition cable interface is characterized in that described pressure cap (2) outer surface is shaped on four jiaos or hexagonal and pulls mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201858876U CN201282323Y (en) | 2008-09-09 | 2008-09-09 | Flame proof wiring box for spark plug and ignition cable interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201858876U CN201282323Y (en) | 2008-09-09 | 2008-09-09 | Flame proof wiring box for spark plug and ignition cable interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201282323Y true CN201282323Y (en) | 2009-07-29 |
Family
ID=40929189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201858876U Expired - Lifetime CN201282323Y (en) | 2008-09-09 | 2008-09-09 | Flame proof wiring box for spark plug and ignition cable interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201282323Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358740B (en) * | 2008-09-09 | 2010-07-28 | 江苏新大石油技术服务有限公司 | High voltage insulation spark plug and explosion suppression junction box of ignition cable interface |
| CN104600569A (en) * | 2014-11-17 | 2015-05-06 | 沈玮 | Large capacitive ignition rod |
| CN106051318A (en) * | 2016-07-20 | 2016-10-26 | 哈尔滨电气动力装备有限公司 | Combined sealing signal line structure bearing external pressure |
-
2008
- 2008-09-09 CN CNU2008201858876U patent/CN201282323Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101358740B (en) * | 2008-09-09 | 2010-07-28 | 江苏新大石油技术服务有限公司 | High voltage insulation spark plug and explosion suppression junction box of ignition cable interface |
| CN104600569A (en) * | 2014-11-17 | 2015-05-06 | 沈玮 | Large capacitive ignition rod |
| CN106051318A (en) * | 2016-07-20 | 2016-10-26 | 哈尔滨电气动力装备有限公司 | Combined sealing signal line structure bearing external pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090729 Effective date of abandoning: 20080909 |