CN201145299Y

CN201145299Y - Ignition device for ignition and explosion test

Info

Publication number: CN201145299Y
Application number: CNU2007201992160U
Authority: CN
Inventors: 张小沁; 刘刚; 田俊荣
Original assignee: Shanghai Research Institute of Chemical Industry SRICI
Current assignee: Shanghai Research Institute of Chemical Industry SRICI
Priority date: 2007-12-13
Filing date: 2007-12-13
Publication date: 2008-11-05
Anticipated expiration: 2017-12-13

Abstract

The utility model discloses an ignition device used for a burning explosion test. The ignition device comprises a body, a clamping plug, a side-arm pipe and a spark plug, wherein, an explosionproof disk is arranged on the upper end of the body and is supported into the body through the lower end of the clamping plug; a pressure sensor is arranged on one end of the side-arm pipe and is communicated with the body; the upper end of the spark plug is extended into the lower end of the body and is fixedly connected with the body, while the upper end of the spark plug is provided with a high-voltage electrode which is in insulated connection with the spark plug and an earthing electrode which is connected with the spark plug and is earthed; and a linen roll is arranged between upper ends of the two electrodes which are closely contacted the linen roll respectively. The ignition device explodes a sample through inputting high-voltage current to the high-voltage electrode for generating high-voltage arc to ignite the linen roll, thereby completely meeting test requirement. The ignition device has the advantages of simple manufacture, convenient installation, reduced difficulty of test operation, low cost and improved economic benefits.

Description

A kind of explosion test igniter

Technical field

The utility model relates to the testing equipment of inflammable and explosive substances, more particularly, relates to a kind of explosion test igniter, the accuracy that this igniter can guarantee test, and make simple, easy to operate, cost is low.

Background technology

Because the inflammable and explosive substances (as explosive, autoreaction thing or organic peroxide) in the dangerous chemicals are in storage and transportation, as easy as rolling off a log generation spontaneous combustion or blast, therefore, need carry out explosion test to such inflammable and explosive substances, thereby detect time and the pressure fire, determine that these article are in the effect of sealing condition down-firing with propagate the ability that fires.According to the test of the United Nations's " about recommendation of Dangerous Goods Transport " and 11.6.1 test 1 (c) of manual of standards (4th), 12.6.1 test the pertinent regulations in 2 (c) and the 23.4.1 test C.1, see also shown in Figure 1, the explosion test that is used for such test comprises body 11 with igniter 10, clamping plug 12, side arm tube 13 and spark plug 14, body 11 is a cylindrical GB150-1998, on the body 11, following both ends open, inside is cavity body, body 11 upper ends are provided with aluminum explosion disk 111, and the lower end by clamping plug 12 heads in the body 11 and with body 11 and compresses sealing; Side arm tube 13 laterally is located at body 11 1 sides, and an end is connected with body 11 inner chambers and communicates, and the other end is provided with pressure sensor and cooperates fixing by screw thread 131; Spark plug 14 is located at body 11 lower ends, and please in conjunction with shown in Fig. 2-4, spark plug 14 upper ends are provided with 141, one electrode contacts of two electrode contacts 141 and spark plug 14 insulation, and another electrode contact 141 is connected with spark plug 14 and ground connection; Also be provided with electrical fuze head 15 commonly used in the low pressure detonator on the electrode contact 141, electrical fuze head 15 is connected respectively with two electrode contacts 141 by brass contact 151; Also be provided with square linen 16 on the electrical fuze head 15, linen 16 central hole also are placed on the electrical fuze head 15, fold electrical fuze head 15 is wrapped in wherein again, and tighten by thin cotton thread.If test specimen is a liquid, be connected on the electrode contact 141 of igniter plug after the brass contact 151 of electrical fuze head 15 can being passed silicone rubber tube, and behind the linen 16 parcel electrical fuze heads 15, adopt a polyvinyl chloride film or equivalent to wrap up in one deck again, avoid soaking inefficacy.During test, only need the sample of required test body 11 inside of packing into, then this igniter 10 is located on the igniting bracing frame, make explosion disk 111 down, and igniter plug is connected to dynamo exploder, thereby light a fire the linen 16 that ignites, and then ignite sample, by the pressure sensor test pressure and note data such as time.But, in this process of the test, sample is blasted and is easy to cause the damage of spark plug 14, thus heavy damage the sealing of this body 11, influenced the accuracy of test, must often change spark plug 14, this spark plug 14 there is no sale on market at present, need special facture, and electrical fuze head 15 belongs to priming system, though can buy, transportation and storage are had higher requirement., and and when electrical fuze head 15 was installed, the mode of the threading of must holing by welding or on electrode contact 141 connected, and therefore, has not only increased the difficulty and the workload of test operation, but also has increased experimentation cost.

The utility model content

Fragile at the spark plug that exists in the prior art, influence sealing, cause testing poor accuracy, needs change shortcoming frequent and that electrical fuze head installation difficulty is big, experimentation cost is high, the purpose of this utility model provides a kind of explosion test igniter, this igniter not only can guarantee test accuracy, and make simple, easy for installation, cost is low.

For achieving the above object, the utility model adopts following technical scheme:

This explosion test comprises body, clamping plug, side arm tube and spark plug with igniter, the upper/lower terminal opening of body, and inside is cavity body, body upper end is provided with explosion disk, and the lower end by the clamping plug heads in the body and compresses sealing with body; Side arm tube one end is communicated with the body sidewall, and the other end is provided with pressure sensor; The body lower end is stretched in the spark plug upper end, and is connected and fixed with body, and described spark plug upper end is provided with two electrodes, and one is high-field electrode, is connected with the spark plug insulation; One is earth electrode, is connected with spark plug and ground connection; Two electrodes also are provided with flax yardage roll between the upper end, and flax yardage roll closely contacts with two electrodes respectively.

Described spark plug inner shaft is provided with insulating barrier to having the hole in the hole, described high-field electrode penetrates in the hole and is connected with insulating barrier, and the high-field electrode lower end passes from the spark plug lower end, and is connected to the external high pressure power supply.

Described spark plug upper end outer wall is provided with screw thread, and described body lower end inwall is provided with suitable screw thread, and the spark plug upper end screws in the body lower end by threaded engagement, is connected and fixed with body.

When test sample was liquid, described flax yardage roll peripheral hardware had polytetrafluoroethylene film, and polytetrafluoroethylene film is wrapped in outside flax yardage roll, and closely contacts with two electrodes respectively.

Described flax yardage roll and polytetrafluoroethylene film are all tightened fixing by cotton thread.

In technique scheme, explosion test of the present utility model comprises body, clamping plug, side arm tube and spark plug with igniter, and the body upper end is provided with explosion disk, and heads in the body by the lower end of clamping plug; Side arm tube one end is provided with pressure sensor and is communicated with body; The body lower end is stretched in the spark plug upper end, and is connected and fixed with body, and the spark plug upper end is provided with two electrodes, and one is high-field electrode, is connected with the spark plug insulation; One is earth electrode, is connected with spark plug and ground connection; Two electrodes also are provided with flax yardage roll between the upper end, and flax yardage roll closely contacts with two electrodes respectively.This igniter is passed through high-field electrode input high-tension current, and produces high-voltage arc, flax yardage roll that ignites, thus ignite sample.This ignition device structure is simple, easy to make, can satisfy test requirements document fully, and spark plug can be bought on market, and cost is low, has increased economic benefit.

Description of drawings

Fig. 1 is the structure cross-sectional schematic of the explosion test of prior art with igniter;

Fig. 2 is the structural representation of the spark plug of igniter shown in Fig. 1;

Fig. 3 is the structural representation of the electrical fuze head of igniter of the prior art;

Fig. 4 is the structural representation of the linen of igniter of the prior art;

Fig. 5 is that the linen of prior art is enclosed within the view on the electrical fuze head;

Fig. 6 is the structure cross-sectional schematic of explosion test of the present utility model with igniter;

Fig. 7 is the structural representation of the spark plug of the igniter shown in Fig. 6;

Fig. 8 is the use principle schematic diagram of igniter of the present utility model.

The specific embodiment

Further specify the technical solution of the utility model below in conjunction with drawings and Examples.

See also shown in Figure 6, explosion test of the present utility model comprises body 21, clamping plug 22, side arm tube 23 and spark plug 24 with igniter 20, body 21 is a cylindrical GB150-1998, the upper/lower terminal opening of body 21, inside is cavity body, and body 21 upper ends are provided with aluminum explosion disk 211 and plumbous system packing ring; Body 21 upper ends are stretched in the lower end of clamping plug 22, and aluminum explosion disk 211 and plumbous system packing ring headed in the body 21 compress sealing with body 21; Side arm tube 23 is a hollow pipe, and an end and body 21 sidewalls are connected and fixed, and communicates with body 21 inside, and this connection place is nearer apart from the upper end open that clamping plug 22 is installed, and far away apart from the lower ending opening that spark plug 24 is installed; The other end of side arm tube 23 is provided with pressure sensor 25, and cooperates fixing by the internal thread 231 of side arm tube 23; Body 21 lower ends are stretched in spark plug 24 upper ends, and are connected and fixed with body 21.Please in conjunction with shown in Figure 7, it is high-field electrode 241a that spark plug 24 upper ends are provided with two electrodes 241,, and high-field electrode 241a is connected with spark plug 24 insulation; Another is earth electrode 241b, and earth electrode 241b is connected with spark plug 24 and ground connection; Also be provided with flax yardage roll 26 between the upper end of two electrodes 241, flax yardage roll 26 closely contacts with two electrodes 241 respectively.Flax yardage roll 26 is made very simple, can adopt a rectangular linen, with a minor face is that spool rolls and forms, and linen is tightened fixing by thin cotton thread, and fill in the space between two electrodes 241, and guarantee that flax yardage roll 26 can closely contact with the inboard of two electrodes 241 respectively.Certainly, if test specimen is a liquid, then can wrap up one deck polytetrafluoroethylene film or equivalent again outside flax yardage roll 26, and closely contact with two electrodes 241 equally respectively, can avoid linen to avoid soaking like this, inefficacy causes igniting.Spark plug 24 inner shafts are provided with insulating barrier 242 to having the hole in the hole, high-field electrode 241a penetrates in the hole and is connected with insulating barrier 242, and high-field electrode 241a lower end passes from spark plug 24 lower ends, and is connected to the external high pressure power supply.Also be provided with screw thread on the spark plug 24 upper end outer walls, body 21 lower end inwalls are provided with suitable screw thread, and spark plug 24 upper ends can screw in body 21 lower ends by threaded engagement, and are connected and fixed with body 21.

Below in conjunction with shown in Figure 8, use to this igniter 20 is illustrated: the linen of first cutting 30mm * 10mm, and be that spool rolls into flax yardage roll 26 with 10mm, and after tightening with a thin cotton thread, fill between two electrodes 241 of spark plug 24 and closely contact with two electrodes 241 respectively; Again spark plug 24 is screwed in the body 21, and pressure sensor 25 is installed in side arm tube 23 1 sides, then the test specimen of 5.0 gram Celogen Azs is placed body 21 inner chambers, again lead system packing ring and aluminum explosion disk 211 are installed in body 21 upper ends successively, stretch into body 21 upper ends and hold out against fixing by the lower end of clamping plug 22; Then this igniter 20 is located on the igniting bracing frame, and is placed in the explosion venting cupboard; At this moment, two electrodes of spark plug 24 are connected to high voltage source, need to prove that at this high voltage source can adopt civil power 220V to carry out transformation by high-tension transformer 1, the high pressure of generation is 7500V.This high pressure moment produces electric arc between two electrodes 241, thereby light flax yardage roll 26, ignite the test specimen of body 21 inside immediately, note the pressure signal that pressure sensor 25 detects at last, testing result shows, pressure in the body 21 has surpassed 2070kPa, satisfy test requirements document fully, and the pressure in the body 21 from the time that 690kPa rises to 2070kPa be 69ms, the test explanation, underproof Celogen Az is propagated the ability that fires and is " being, very slow " under sealing condition, consistent with the result who puts down in writing in the relevant document.

Igniter 20 of the present utility model is compared with the igniter 10 of prior art, cancelled the igniting of electrical fuze head, and change the high-voltage arc igniting into, not only can satisfy test requirements document fully, but also simplify spark plug 24 structures, made things convenient for and made and use, this spark plug 24 is a general part, on market, can directly buy, and also with low cost, thereby increased economic benefit, effect is very remarkable.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not to be used as qualification of the present utility model, as long as in connotation scope of the present utility model, all will drop in claims scope of the present utility model variation, the modification of the above embodiment.

Claims

1. explosion test igniter, this igniter comprises body, clamping plug, side arm tube and spark plug, the upper/lower terminal opening of body, and inside is cavity body, body upper end is provided with explosion disk, and the lower end by the clamping plug heads in the body and compresses sealing with body; Side arm tube one end is communicated with the body sidewall, and the other end is provided with pressure sensor; The body lower end is stretched in the spark plug upper end, and is connected and fixed with body, it is characterized in that:

Described spark plug upper end is provided with two electrodes, and one is high-field electrode, is connected with the spark plug insulation; One is earth electrode, is connected with spark plug and ground connection; Two electrodes also are provided with flax yardage roll between the upper end, and flax yardage roll closely contacts with two electrodes respectively.

2. a kind of explosion test igniter as claimed in claim 1 is characterized in that:

3. a kind of explosion test igniter as claimed in claim 1 is characterized in that:

4. a kind of explosion test igniter as claimed in claim 3 is characterized in that:

Described flax yardage roll peripheral hardware has polytetrafluoroethylene film, and polytetrafluoroethylene film is wrapped in outside flax yardage roll, and closely contacts with two electrodes respectively.

5. a kind of explosion test igniter as claimed in claim 4 is characterized in that: