CN1077280A - Clamp type detector for loop resistance of electric detonator - Google Patents
Clamp type detector for loop resistance of electric detonator Download PDFInfo
- Publication number
- CN1077280A CN1077280A CN 92102281 CN92102281A CN1077280A CN 1077280 A CN1077280 A CN 1077280A CN 92102281 CN92102281 CN 92102281 CN 92102281 A CN92102281 A CN 92102281A CN 1077280 A CN1077280 A CN 1077280A
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- Prior art keywords
- circuit
- electric detonator
- resistance
- type detector
- clamp
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- 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.)
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- Measurement Of Resistance Or Impedance (AREA)
Abstract
The invention relates to a clamp-type detector for loop resistance of an electric detonator, which is characterized in that a loop resistance clamp-type detector consisting of a superpower frequency (10 times power frequency) narrow pulse, a separable manganese-zinc ferrite single-winding clamp-type detection circuit, a narrow pulse amplitude detection and amplification circuit, a measurement display circuit, a voltage stabilizing circuit, an undervoltage indicating circuit and a 9V laminated power supply is adopted to measure the bridge wire ignition resistance of the electric detonator in a closed loop and the like.
Description
The present invention is a kind of clamp-type detector for loop resistance of electric detonator, the F42 class scope that belongs to International Patent Classification (IPC), when being mainly used in the electric blasting of electric cap factory, mine and construction project, the bridge wire ignition resistance of electric detonator that the payment to a porter termination is connect carries out safety detection.
At present both at home and abroad loop resistance of electric detonator is detected the two binding clip loop-circuit resistance testers of silicon steel sheet that have only No. 87103064.0, Chinese invention patent, its shortcoming is that tong head complexity, manufacture craft require height, and it is non-linear detecting underaction and detecting the resistance that shows.
In order to solve the technical problem of above-mentioned existence, special single binding clip of the present invention, simple in structure, the flexible and good clamp-type detector for loop resistance of electric detonator of the detection linearity of proposing.
Clamp-type detector for loop resistance of electric detonator of the present invention, as shown in Figure 1, be by super power frequency (10 times of power frequencies) narrow pulse signal circuit (1), separable manganese-zinc ferrite simplex winding pincers type testing circuits (2), burst pulse amplitude detect amplifying circuit (3), measurement display circuit (4), mu balanced circuit (5), under-voltage indicating circuit (6) and 9 volts of laminated power supplys (7) and form.
Invention is characterised in that adopts super power frequency (10 times of power frequencies) burst pulse by separable manganese-zinc ferrite simplex winding pincers type testing circuits (2) and bridge wire ignition resistance of electric detonator closed-loop path (13) the magnetic testing circuit even mutually that encircles on movable manganese-zinc ferrite semi-ring (12), through the clamp-type detector for loop resistance of electric detonator that oversampling circuit (3), (4), (5), (6) and (7) are formed, its principal diagram is in Fig. 2.
The structure of single binding clip is made up of fixing manganese-zinc ferrite semi-ring (10), movable magnetic core semi-ring (12), detection winding (11) as shown in Figure 3.
Electric cap loop clamp-type detector of the present invention is the contactless detector of making according to the electromagnetic induction principle of the burst pulse of super power frequency (10 times of power frequencies) in the winding on annular manganese-zinc ferrite of jaw type.
When detecting loop resistance of electric detonator, press rotatable handle (16) earlier and open movable ferrite semi-ring (12), the loop of electric cap (13) is inserted in the manganese-zinc ferrite pincers, at this moment by super power frequency narrow pulse signal circuit (1), winding (11) in circuit (2) is defeated-short duration current of super power frequency (10 times of power frequencies), variation along with the resistance value in the bridge wire of electric detonator resistance loop, can reflect proportional amplitude voltage at A, D end and change, this voltage demonstrates the resistance of loop resistance of electric detonator linearly by circuit (3) and (4).
Detector of the present invention has simple in structure, flexible, easy to use, and the detection loop resistance linearity is good, safe and reliable.When detecting the bridge wire resistance of electric cap, the electric current of being inducted in the detonator loop is a microampere order.Owing to when measuring resistance of electric detonator, need not the payment to a porter of short circuit is taken apart, avoided stray electrical current to invade and caused electric cap quick-fried harm morning.
Claims (1)
1, the present invention is that the burst pulse amplitude detects amplifying circuit [3], measures display circuit [4], mu balanced circuit [5], under-voltage indicating circuit [6] and 9 volts laminated power supplys [7] and form, and it is characterized in that adopting super power frequency (10 times of power frequencies) burst pulse by separable manganese-zinc ferrite simplex winding [11] pincers type testing circuit [2] and bridge wire ignition resistance of electric detonator closed-loop path [13] the magnetic testing circuit even mutually that encircles on movable manganese-zinc ferrite semi-ring [12].
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92102281 CN1077280A (en) | 1992-04-09 | 1992-04-09 | Clamp type detector for loop resistance of electric detonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92102281 CN1077280A (en) | 1992-04-09 | 1992-04-09 | Clamp type detector for loop resistance of electric detonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1077280A true CN1077280A (en) | 1993-10-13 |
Family
ID=4939560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92102281 Pending CN1077280A (en) | 1992-04-09 | 1992-04-09 | Clamp type detector for loop resistance of electric detonator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1077280A (en) |
-
1992
- 1992-04-09 CN CN 92102281 patent/CN1077280A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |