CN201273588Y

CN201273588Y - Igniter with pressure regulating function

Info

Publication number: CN201273588Y
Application number: CNU2008201527801U
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: 2008-09-05
Filing date: 2008-09-05
Publication date: 2009-07-15
Anticipated expiration: 2018-09-05

Abstract

The utility model discloses a lighter with the function of adjusting the voltage, and the lighter comprises a body, a clamping plug, a side wall pipe and a sparking plug, wherein two electrodes are arranged on the upper end of the sparking plug, one of the electrodes is connected with the sparking plug, the other electrode is insulated with the sparking plug and is traversed through the lower end of the sparking plug, and the electrodes are connected with an external power supply, the lighter further comprises a low-voltage fuse-wire which is arranged between the upper ends of the two electrodes, and both ends of the low-voltage fuse-wire are respectively connected with the two electrodes and are fixed. The lighter adopts the low-voltage fuse-wire adapting to low-voltage dissolution and vaporization, which can eliminate the safety hidden dangers brought by high-voltage ignition and can improve the safety, and the generated flame energy is basically constant, which guarantees the repetition of tests. Furthermore, the lighter adopts an adjustment circuit, which not only can supply different low-voltages for the fuse-wire for simulating different testing conditions, but also can prevent the effects of the power supply through storing electric power by a capacitance, thereby improving the stability of the tests.

Description

Igniter with voltage regulation function

Technical field

The utility model relates to the testing equipment of inflammable and explosive substances, more particularly, relates to a kind of igniter with voltage regulation function, and the use of this igniter is safer reliable, effectively stable.

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.Test and 11.6.1 test 1 (c), 12.6.1 test 2 (c) of manual of standards (4th) and the pertinent regulations in the 23.4.1 test C.1 according to the United Nations's " about recommendation of Dangerous Goods Transport ", see also shown in Figure 1, the igniter 10 that is used for such test comprises body 11, clamping plug 12, side arm tube 13 and spark plug 14, body 11 is a cylindrical GB150-1998, the upper/lower terminal opening of body 11, 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 used to be provided with pressure sensor; Spark plug 14 is located at body 11 lower ends, and please in conjunction with shown in Fig. 2～5, 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 with two electrode contacts 141 respectively 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, yet this spark plug 14 there is no sale on market, need special facture, and electrical fuze head 15 belongs to priming system, though can buy, transportation and storage are had higher requirement.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, has also increased experimentation cost.In addition, this igniter is when lighting a fire, and the high-voltage pulse of generation has certain influence to sensor, can cause sensor output signal waveform instability.

At above-mentioned shortcoming, the applicant had once carried out corresponding improvement to spark plug, saw also shown in Figure 6ly, and spark plug 24 upper ends after the improvement are provided with two

electrode

241a, 241b, and one is earth electrode 241a, was connected with spark plug 24 and ground connection; Another is high-field electrode 241b, with spark plug 24 insulation and pass spark plug 24 bottoms; Two

electrode

241a, 241b also are connected with flax yardage roll 25 between the upper end.During use, high voltage source is carried on two electrode 241a, the 241b, makes between electrode 241a, the 241b moment produce electric arc and light linen volume 25.Though adopt this spark plug 24 can overcome the former shortcoming, but because it must just can be lighted by high pressure (up to 7500V), and high pressure is lighted and is existed bigger potential safety hazard, easily operating personnel and equipment are caused and seriously influence, and also be subject to the influence of external power source when lighting,, can't guarantee to produce stable electric arc in case mains fluctuations or tripping operation take place, influence lighting of flax yardage roll 25, the stability that causes testing reduces greatly.Therefore, press for a kind of new igniter and overcome above-mentioned shortcoming.

The utility model content

At the shortcoming dangerous, that easily cause personnel, equipment damage and be subject to the power supply de-stabilising effect that exists in the prior art, the purpose of this utility model provides a kind of igniter with voltage regulation function, this igniter can be suitable for low-tension ignition, thereby eliminate safe hidden trouble, improve the stability of test.

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

This igniter with voltage regulation function comprise upper and lower opening and in establish cavity body, fill in body upper end the clamping plug, be communicated in the side arm tube of body one side and be connected at the spark plug of body lower end, the spark plug upper end is provided with two electrodes, one electrode is connected with spark plug, another electrode and spark plug insulation also pass the spark plug lower end, and two electrodes link to each other with external power source, this igniter also comprises the low-tension fuse between the upper end of being located at two electrodes, and the two ends of this low-tension fuse are connected to a fixed with two electrodes respectively.

Also be provided with a regulating circuit between described two electrodes and the power supply, the input of regulating circuit links to each other with power supply, and output links to each other with two electrodes.

Described regulating circuit comprises adjustable transformer, rectifier and commutator, and the input of adjustable transformer links to each other with power supply, and the pressure regulation end of adjustable transformer links to each other with rectifier, and the output of rectifier is in parallel with commutator and be connected to fuse by two electrodes.

Also be parallel with first indicator lamp, second indicator lamp, voltmeter and several electric capacity between described rectifier and the commutator successively, and between the parallel connected end of first indicator lamp and second indicator lamp, also be provided with an indicator cock.

The range of regulation of described regulating circuit is 0～250VDC.

Described low-tension fuse is copper fuse, and its two ends are wire-wrapped in respectively on two electrodes.

The diameter of described low-tension fuse is 0.10～0.15 millimeter.

In technique scheme, igniter with voltage regulation function of the present utility model comprises body, clamping plug, side arm tube and spark plug, the spark plug upper end is provided with two electrodes, one electrode is connected with spark plug, another electrode and spark plug insulation also pass the spark plug lower end, and all link to each other with external power source, igniter also comprises the low-tension fuse between the upper end of being located at two electrodes, the two ends of this low-tension fuse are connected to a fixed with two electrodes respectively.This igniter has adopted and has been suitable for the low-tension fuse that low-voltage is dissolved and vaporized, and not only can eliminate the potential safety hazard that high-tension ignition brings, and has improved security, and the flame energy substantially constant that produces, and has guaranteed the repeatability of test.In addition, adopt to adjust circuit, not only can be for fuse provide different low-voltages, in order to simulating different experimental conditions, but also can avoid being subjected to the influence of power supply, thereby improve the stability of test by the electric capacity electric power storage.

Description of drawings

Fig. 1 is the structure cross-sectional schematic of a kind of igniter of prior art;

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 shown in Figure 1;

Fig. 4 is the structural representation of the linen of igniter shown in Figure 1;

Fig. 5 is that linen shown in Figure 4 is enclosed within the view on the electrical fuze head;

Fig. 6 is the structure cross-sectional schematic of the another kind of spark plug of prior art;

Fig. 7 is the structure cross-sectional schematic of igniter of the present utility model;

Fig. 8 is the structural representation of the spark plug of igniter shown in Figure 7;

Fig. 9 is the circuit theory diagrams of the regulating circuit 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 7, the igniter 30 that the utlity model has voltage regulation function equally also comprises body 31, clamping plug 32, side arm tube 33 and spark plug 34, body 31 is a cylindrical GB150-1998, the upper/lower terminal opening of body 31, inside is cavity body, and body 31 upper ends are provided with aluminum explosion disk 311 and plumbous system packing ring; Body 31 upper ends are stretched in the lower end of clamping plug 32, and aluminum explosion disk 311 and plumbous system packing ring headed in the body 31 compress sealing with body 31; Side arm tube 33 is a hollow pipe, and an end and body 31 sidewalls are connected and fixed, and communicates with body 31 inside, and this connection place is nearer apart from the upper end open that clamping plug 32 is installed, and far away apart from the lower ending opening that spark plug 34 is installed; The other end of side arm tube 33 is provided with the pressure sensor (not shown), and can cooperate fixing by the internal thread 331 of side arm tube 33; Spark plug 34 upper ends are provided with two

electrode

341a, 341b, wherein an electrode 341a is connected with spark plug 34 and ground connection, and another electrode 341b insulate with spark plug 34 mutually by the insulating barrier in the spark plug 34, and pass spark plug 34 lower ends, two

electrode

341a, 341b all link to each other with the outer low pressure power supply, body 31 lower ends are stretched in spark plug 34 upper ends, and are connected and fixed by threaded engagement and body 31.Different is, please in conjunction with shown in Figure 8, this igniter 30 also comprises the low-tension fuse 35 between the upper end of being located at two

electrode

341a, 341b, and the two ends of this low-tension fuse 35 are connected with two

electrode

341a, 341b respectively.This low-tension fuse 35 can adopt copper fuse, golden fuse, silver fuse or platinum matter fuse etc., wherein, is the best with copper fuse.The diameter range of this low-tension fuse 35 is 0.10～0.15 millimeter, and the two ends of this low-tension fuse 35 are by being wound on two electrode 341a, the 341b, thereby is connected closely with two electrode 341a, 341b.Please in conjunction with shown in Figure 9, as an embodiment, between two electrode 341a, the 341b of this igniter 30 and external power source, also be provided with a regulating circuit 36, the input of regulating circuit 36 links to each other with power supply, and output links to each other with two electrode 341a, 341b.This regulating circuit 36 comprises adjustable transformer T, rectifier DZ and commutator S1, adjustable transformer T can select auto-transformer for use, its input links to each other with power supply, its pressure regulation end then links to each other with rectifier DZ, rectifier DZ is a silicon rectification bridge DZ, its output is in parallel with commutator S1, and is connected to low-tension fuse 35 by two electrode 341a, 341b.Also be parallel with the first indicator lamp L1, the second indicator lamp L2, voltmeter V and several electric capacity between rectifier DZ and the commutator S1 successively, the quantity of electric capacity can be one, two or more, the quantity of the electric capacity shown in Fig. 9 is two, be respectively C1, C2, and between the parallel connected end of the first indicator lamp L1 and the second indicator lamp L2, also be provided with an indicator cock S2, also be provided with a current-limiting resistance R between the rectifier DZ and the first indicator lamp L1, the F among Fig. 9 is a fuse.The range of regulation of this regulating circuit 36 is 0～250VDC (being the range of regulation of adjustable transformer T), and as an embodiment, the output current 〉=20A of this regulating circuit 36 is applicable to the fusing of copper wire.

The operation principle of this regulating circuit 36 is as follows: when S2 opens when connecting external power source, and L1 Chang Liang, the expression external power source is connected; Regulate by adjustable transformer T then, produce the DC voltage of a 0～250V, output current is then more than or equal to 20A, this moment closed S2, L2 is bright, and capacitor C 1, C2 begin electric power storage, and observe voltmeter V reading this moment, when the output voltage of voltmeter V reading and adjusting is identical, be that capacitor C 1, C2 charging are finished, disconnect S2 at last, closed S1 makes dc source be loaded on the low-tension fuse 35 and light a fire by two electrode 341a, 341b.When during as if igniting mains fluctuations or tripping operation taking place suddenly,, therefore can improve the stability of test for low-tension fuse 35 provides stable voltage owing to capacitor C 1, C2 electric power storage.

Below, illustrate the concrete use of this igniter 30: cut the copper fuse 35 of one section diameter 0.14mm earlier, and two ends that will this copper fuse 35 respectively solderless wrapped connection on two

electrode

341a, 341b; Again spark plug 34 is screwed in the body 31, and pressure sensor is installed in side arm tube 33 1 ends, then the test specimen of 5.0 gram Celogen Azs is placed body 31 inner chambers, again lead system packing ring and aluminum explosion disk 311 are installed in body 31 upper ends, stretch into body 31 upper ends and hold out against fixing by the lower end of clamping plug 32; Then this igniter 30 is located on the igniting bracing frame, and is placed in the explosion venting cupboard; Two

electrode

341a, 341b with spark plug 34 are connected to the adjustment circuit at last, and connect power supply.Regulate adjustable transformer T this moment, and the charging voltage of observing capacitor C 1, C2, when voltage readings is near 250VDC, disconnect S2, closed S1 directly is carried on the copper fuse 35 DC voltage of adjusting circuit 36 outputs, make this copper fuse 35 in instant melting and vaporization, thereby produce the incendiary source that a branch of thermal-flame becomes test, ignite the test specimen of body 31 inside immediately, note the pressure signal that pressure sensor detects at last.This testing result shows, pressure in the body 31 has surpassed 2070kPa, satisfy test requirements document fully, and the pressure in the body 31 from the time that 690kPa rises to 2070kPa be 69ms, this tests 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 30 of the present utility model is owing to adopted low-tension fuse 35 as incendiary source, only needing to load low-tension supply can light, not only improved security greatly, and its flame energy substantially constant that in the certain voltage scope, is produced, guaranteed the repeatability of test, and the installation of this low-tension fuse 35 is very simple, and cost is also very cheap; In addition, adopt regulating circuit 36 not only can in order to the test of simulation different condition, but also can avoid being subjected to the influence of power supply, thereby also improved the stability of test for low-tension fuse 35 provides different low-voltages by the electric capacity electric power storage.

Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the utility model, and be not the qualification that is used as 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. igniter with voltage regulation function, this igniter comprise upper and lower opening and in establish cavity body, fill in body upper end the clamping plug, be communicated in the side arm tube of body one side and be connected at the spark plug of body lower end, the spark plug upper end is provided with two electrodes, one electrode is connected with spark plug, another electrode and spark plug insulation also pass the spark plug lower end, and two electrodes link to each other with external power source, it is characterized in that:

This igniter also comprises the low-tension fuse between the upper end of being located at two electrodes, and the two ends of this low-tension fuse are connected to a fixed with two electrodes respectively.

2. the igniter with voltage regulation function as claimed in claim 1 is characterized in that:

3. the igniter with voltage regulation function as claimed in claim 2 is characterized in that:

4. the igniter with voltage regulation function as claimed in claim 3 is characterized in that:

5. as each described igniter in the claim 2 to 4, it is characterized in that with voltage regulation function:

The range of regulation of described regulating circuit is 0～250VDC.

6. the igniter with voltage regulation function as claimed in claim 1 is characterized in that:

7. as claim 1 or 6 described igniters, it is characterized in that with voltage regulation function:

The diameter of described low-tension fuse is 0.10～0.15 millimeter.