CN87103475A - safety electric detonator - Google Patents
safety electric detonator Download PDFInfo
- Publication number
- CN87103475A CN87103475A CN87103475.1A CN87103475A CN87103475A CN 87103475 A CN87103475 A CN 87103475A CN 87103475 A CN87103475 A CN 87103475A CN 87103475 A CN87103475 A CN 87103475A
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- Prior art keywords
- electric detonator
- detonator
- bead
- electric
- converter
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Abstract
The present invention relates to a safety electric detonator, and is characterized by that a safety conversion circuit is introduced into the firing portion of conventional electric detonator, so that the danger of accidental explosion of detonator due to stray current, static electricity, thunder and lightning and radio-frequency electricity can be eliminated. The electric detonator can be used in various blasting projects, in particular to underground blasting projects and places with serious harm such as stray current, static electricity and the like. The manufacturing cost of the electric detonator is basically equal to that of the common electric detonator.
Description
The present invention is a kind of safe electric detonator of getting rid of accidental explosion danger, belongs to the F-42C class of International Patent Classification (IPC).Can replace and now use various electric caps and on-electric detonator, be used for making blasting work safer among the various blasting engineerings.
Be used at present the electric cap of explosion both at home and abroad, its structure generally is made up of several parts such as loading wire of electric detonator, bridge silk, match board head, delay powder and chief and vice powder charges.For anti-stray electrical current harm, low-resistive bridge silk structure electric cap and no bridge silk structure electric cap are arranged also.The common shortcoming that exists of these electric caps is the ability of anti-stray current, and often the influence because of the static that is subjected to surrounding environment, thunder and lightning, radio frequency electricity produces accidental explosion, does not fundamentally solve the safety problem of electric cap.
Be to solve the safety problem of electric cap, make it to resist the harm of various AC and DC stray electrical currents and static, thunder and lightning, radio frequency electricity, propose BJ-1 type safe electric detonator of the present invention
The structure of BJ-1 type safe electric detonator of the present invention as shown in Figure 1, by loading wire of electric detonator (1), security transformation circuit (2) bridge wire of electric detonator and match board head (3), delay powder (4) and detonator just, secondary powder charge (5) formed.
The invention is characterized in it is partly to have introduced a security transformation circuit (2) in the ignition of common electrical detonator, its principle and structure are as shown in Figure 2, be similar to the sensor circuit of transformer device structure, formed by a winding (6) that connects with loading wire of electric detonator, bead converter (7) and with the Secondary Winding (8) that bridge wire of electric detonator forms electrodeless loop.Bead converter (7) adopts the soft magnetic ferrite material, and it has frequency selective characteristic, and the iron core that utilizes it to make translation circuit plays the alternative stray current of isolation low frequency and the effect of dc stray current.The size of soft magnetic ferrite bead is less, and external diameter is 5～7 millimeters, and internal diameter is the 2.5-4 millimeter, and wall thickness is 1.5～2 millimeters two of beads, can place within the common electrical detonator, forms one with electric cap.
When BJ-1 safe electric detonator of the present invention is worked, need the initiator of the high frequency electric (as 15 kilo hertzs of sesames) of employing CF to connect loading wire of electric detonator, as shown in Figure 2, as high frequency electric i
1When the loading wire of electric detonator of flowing through is a winding, in Secondary Winding, produce induced-current i by the soft magnetic ferrite converter
2, i
2Acting on bridge wire of electric detonator produces enough heat energy and electric cap is ignited.When direct current or industrial-frequency alternating current enter loading wire of electric detonator,, also electric cap can't be ignited even arrive tens of amperes greatly.Static, thunder and lightning or radio wave all are difficult to make electric cap of the present invention to be ignited owing to produce the little or instantaneous low-frequency current of induced current.
BJ-1 type safe electric detonator of the present invention has and the identical security of used non-electric initiation equipment, and the operation that needn't have a power failure when being used for underground explosion helps improving safety benefit and the economic benefit that the mine produces.It is compared with non-electric detonation equipment and can carry out the product detection, the consumption that helps improving the reliability of blasting engineering and reduce explosive.Because to add the security transformation circuit cost cheap in institute, and safe electric detonator of the present invention is equated substantially with the manufacturing cost of common electrical detonator.Can be widely used in the various blasting engineerings, be particularly useful for the serious places of harm such as underground explosion engineering and stray electrical current, static.
Claims (4)
1, a kind of by loading wire of electric detonator [1], bridge wire of electric detonator and match board head [3], delay powder [4] and just, the safe electric detonator formed of secondary powder charge [5], it is characterized in that a security transformation circuit [2] of being made up of a winding [6], bead converter [7] and Secondary Winding partly being arranged in the ignition of electric cap.
2, safe electric detonator according to claim 1, it is characterized in that a winding, Secondary Winding in the security transformation circuit (2) is on the bead converter, one time winding connects with loading wire of electric detonator, and Secondary Winding connects with bridge wire of electric detonator and match board head.
3, safe electric detonator according to claim 1 is characterized in that bead converter using soft magnetic ferrite material.
4, safe electric detonator according to claim 1 is characterized in that bead converter (7) is 5～7 millimeters by external diameter, and internal diameter is 2.5～4 millimeters, and wall thickness is formed by 1.5～2 millimeters bead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87103475 CN1017472B (en) | 1987-05-14 | 1987-05-14 | Virtual leg wire safety electric detonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87103475 CN1017472B (en) | 1987-05-14 | 1987-05-14 | Virtual leg wire safety electric detonator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN87103475A true CN87103475A (en) | 1988-11-30 |
| CN1017472B CN1017472B (en) | 1992-07-15 |
Family
ID=4814451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87103475 Expired CN1017472B (en) | 1987-05-14 | 1987-05-14 | Virtual leg wire safety electric detonator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1017472B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6470803B1 (en) | 1997-12-17 | 2002-10-29 | Prime Perforating Systems Limited | Blasting machine and detonator apparatus |
| CN103900426A (en) * | 2014-04-23 | 2014-07-02 | 安徽理工大学 | Mechanical safety detonator |
| CN105423829A (en) * | 2015-12-17 | 2016-03-23 | 安徽理工大学 | Safe electric detonator |
-
1987
- 1987-05-14 CN CN 87103475 patent/CN1017472B/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6470803B1 (en) | 1997-12-17 | 2002-10-29 | Prime Perforating Systems Limited | Blasting machine and detonator apparatus |
| CN103900426A (en) * | 2014-04-23 | 2014-07-02 | 安徽理工大学 | Mechanical safety detonator |
| CN103900426B (en) * | 2014-04-23 | 2015-11-18 | 安徽理工大学 | A kind of safety mechanical detonator |
| CN105423829A (en) * | 2015-12-17 | 2016-03-23 | 安徽理工大学 | Safe electric detonator |
| CN105423829B (en) * | 2015-12-17 | 2017-04-05 | 安徽理工大学 | A kind of safe electric detonator |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1017472B (en) | 1992-07-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| C10 | Entry into substantive examination | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |