CN112066828A - Delay time measuring device for electric detonator - Google Patents
Delay time measuring device for electric detonator Download PDFInfo
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- CN112066828A CN112066828A CN202010696481.XA CN202010696481A CN112066828A CN 112066828 A CN112066828 A CN 112066828A CN 202010696481 A CN202010696481 A CN 202010696481A CN 112066828 A CN112066828 A CN 112066828A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
- F42C21/00—Checking fuzes; Testing fuzes
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Abstract
The invention discloses a device for measuring delay time of an electric detonator, which comprises an initiator, the electric detonator and a tester, wherein the electric detonator is arranged in an explosion cylinder; an electric probe is bound on a lead wire at the detonation end of each electric detonator, and the electric probe is connected with the tester through a signal wire. According to the device for measuring the delay time of the electric detonator, the detonator is connected with the electric detonator through the junction box assembly, the detonation end of each electric detonator is connected into the junction box assembly in a parallel mode through the conducting wire, and the detonation of the electric detonator can be realized by pressing the junction box assembly, so that the trouble of manual wiring can be saved, the detonation mode of the electric detonator is changed, the operation is simple and convenient, and the test time can be saved while the number of testers is reduced.
Description
Technical Field
The invention relates to the technical field of civil explosive material detection, in particular to a delay time measuring device for an electric detonator.
Background
The electric detonator is a detonating device widely used in engineering blasting, the quality degree of the electric performance of the electric detonator is closely related to the reliability and the use safety of the detonating, and the product must be subjected to strict performance inspection before leaving the factory and before blasting application. The performance indexes required to be detected by the electric detonator are more, wherein the most important is the detection of the initiation capability and the delay time, the common method is to detect the delay time by one shot, and the initiation capability is detected by utilizing a group (usually 20) of outdoor explosion cylinders. When the traditional electric detonator tests the delay time, multiple persons are generally needed to cooperate, and a specially-assigned person is needed to be dispatched to connect the electric leads of the electric detonator one by one, so that the labor capacity of the person is large, the consumed time is long, and along with the increasing of the production capacity and the use amount of the electric detonator, more requirements are provided for a detonating equipment manufacturer in the aspect of improving the rapidity of performance detection of the delay detonating tube detonator.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, the invention aims to provide a device for measuring the delay time of the electric detonator, which can not only save the trouble of manual wiring, but also change the detonation mode of the electric detonator through the arranged junction box assembly, has simple and convenient operation, reduces the number of testers and saves the test time.
The invention provides an electric detonator delay time measuring device, which comprises an initiator, an electric detonator and a tester, wherein the electric detonator is arranged in an explosion cylinder; an electric probe is bound on a lead of the detonation end of each electric detonator, and the electric probe is connected with the tester through a signal wire; and each vibration sensor is arranged on the outer wall of each explosion cylinder and is connected with the tester through a signal wire.
Preferably, the junction box assembly comprises junction boxes which are sequentially arranged in parallel and have the same number as the electric detonators, each junction box is hinged with an upper cover, the tapered end of each junction box is used for leading in the wires, two wire clamping grooves are formed in two side walls of the junction box, which are connected with the tapered end, and correspond to the wire clamping grooves in the two side walls, two metal wire pressing grooves are formed in the junction box, which are located along a connecting line between the two corresponding wire clamping grooves in the two side walls, and the two metal wire pressing grooves are arranged in a staggered manner; the detonator electric lead sequentially penetrates through the wire clamping grooves of the junction boxes to form a closed loop; the tail end of the wire is led into the junction box and is lapped on the two metal wire pressing grooves; and a pressing block matched with the upper cover is arranged in the upper cover at the position corresponding to the two metal wire pressing grooves.
Preferably, the top of the metal wire pressing groove is sunken downwards to form a groove body structure, and the peripheral edge of the top of the metal wire pressing groove is of an arc structure with a notch.
Preferably, the explosion-proof box further comprises an explosion-proof box, the explosion cylinders are arranged inside the explosion-proof box in a rectangular array mode, a lead port for the lead to pass through is formed in the top of the explosion-proof box, and an isolation door made of explosion-proof materials is hinged to the front portion of the explosion-proof box.
Preferably, the explosion tube is fixed on a back plate of the explosion-proof box through a bolt, a central axis of the explosion tube is perpendicular to the back plate of the explosion-proof box, and one end of the explosion tube, which is far away from the back plate, is provided with a through hole for inserting a power supply detonator.
Preferably, the vibration sensor is a piezoelectric acceleration sensor or a piezoelectric force sensor.
The invention also provides a test method of the electric detonator delay time measuring device, which comprises the following steps:
s1, sequentially connecting the detonator electric lead to the junction box assembly, binding the electric probes on the lead of the electric detonator and respectively connecting the electric probes to the corresponding junction boxes, and communicating the vibration sensor with the tester;
s2, starting the detonator and the tester, pressing down the upper cover of the first junction box, wherein the time for the tester to detect the current signal generated by the electric probe is T1, the time for the tester to detect the signal generated by the vibration sensor after the electric detonator explodes is T2, and the time difference between T2 and T1 is the delay time of the electric detonator;
and S3, sequentially pressing the upper cover of the second junction box until the last junction box detonates the electric detonator, and repeating the timing in S2 every time one electric detonator is detonated.
The invention has the beneficial effects that: the detonator is connected with the electric detonators through the junction box assembly, the detonation end of each electric detonator is connected into the junction box assembly in a parallel mode through a lead, the detonation of each electric detonator can be realized by pressing the junction box assembly, the tests of each electric detonator are not mutually interfered, when the delay time of each electric detonator is detected, the upper cover on the corresponding junction box of each electric detonator is directly pressed, the pressing block on the upper cover is pressed into the metal wire pressing groove, and the pressing block rubs with the lead and the electric lead of the detonator in the process of being pressed into the metal wire pressing groove so as to remove the insulating skin on the surface of the pressing block, so that the lead is conducted with the electric lead of the detonator. The invention utilizes the junction box assembly, not only can save the trouble of manual wiring, but also changes the detonation mode of the electric detonator, has simple and convenient operation, reduces testing personnel and saves testing time.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic view of the overall structure of an electric detonator delay time measuring device provided by the invention;
FIG. 2 is a schematic structural diagram of an explosion-proof box of the delay time measuring device of the electric detonator, which is provided by the invention;
FIG. 3 is a schematic structural diagram of a junction box of the delay time measuring device of the electric detonator according to the present invention;
fig. 4 is a schematic view of a part of the structure of the delay time measuring device of the electric detonator.
In the figure: 1. an explosion-proof box; 2. an isolation gate; 3. an explosive cartridge; 4. a wire leading port; 5. a tester; 6. a terminal block assembly; 61. a junction box; 62. an upper cover; 63. a metal wire pressing groove; 64. a wire clamping groove; 65. briquetting; 7. an initiator; 8. a wire; 9. a detonator electrical lead; 10. a signal line; 11. a vibration sensor; 12. an electric probe.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The delay time measuring device of the electric detonator according to the embodiment of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-4, the device for measuring delay time of an electric detonator comprises an initiator 7, electric detonators arranged in an explosion tube 3 and a tester 5, wherein the initiator 7 detonates the detonators through detonator electric leads 9, the explosion tube 3 is arranged in a rectangular array in an explosion-proof box 1, 20 groups of the explosion tube 3 are arranged, the top of the explosion-proof box 1 is provided with a lead port 4 for leading a lead wire 8 to pass through, signal wires 10 connected with the tester 5 are also led out from the lead port 4 in a centralized manner, the front part of the explosion-proof box 1 is hinged with an isolating door 2 made of explosion-proof materials, a lock catch structure on the isolating door 2 adopts the conventional technology (not shown in the figure), in order to facilitate the operation of a tester and shorten the test period, a junction box assembly 6 is connected between the initiator 7 and the electric detonators, the detonation end of each electric detonator is connected into the junction box assembly 6 in a, the detonation of each electric detonator can be realized by pressing the junction box assembly 6, and the tests of each electric detonator are not mutually interfered; an electric probe 12 is bound on the lead 8 of the detonation end of each electric detonator, and the electric probe 12 is connected with the tester 5 through a signal wire 10; the outer wall of each explosion cylinder 3 is provided with a vibration sensor 11, the vibration sensor 11 is connected with a tester 5 through a signal wire 10, an electric probe 12 and the vibration sensor 11 are used for detecting two time parameters of the electric detonator, wherein the electric probe 12 is bound at the detonation end of the electric detonator, when current on a lead 8 flows through the electric probe 12, a delay body in the electric detonator starts to detonate, after the electric detonator explodes, the electric detonator vibrates, and the difference between the time parameter of the point detected by the vibration sensor 11 and the time parameter detected by the electric probe 12 is the delay time of the electric detonator.
Specifically, as shown in fig. 3, the junction box assembly 6 of the present invention includes junction boxes 61 arranged in parallel in sequence and having the same number as the electric detonators, each junction box 61 is hinged with an upper cover 62, the tapered end of the junction box 61 is used for introducing a wire 8, two wire clamping grooves 64 are respectively formed on two side walls of the junction box 61 connected to the tapered end, the wire clamping grooves 64 on the two side walls correspond to each other, two metal wire pressing grooves 63 are installed on a connecting line between the two corresponding wire clamping grooves 64 on the two side walls inside the junction box 61, and the two metal wire pressing grooves 63 are arranged in a staggered manner, so as to prevent a short circuit phenomenon from occurring in the wire 8; the detonator electric lead wire 9 sequentially passes through the wire clamping grooves 64 of each junction box 61 to form a closed loop; the tail end of the wire 8 is led into the junction box 61 and is lapped on the two metal wire pressing grooves 63; the inner part of the upper cover 62 is provided with a pressing block 65 matched with the two metal pressing grooves 63 at the positions corresponding to the two metal pressing grooves. The junction box assembly 6 adopts the structure, so that the lead 8 led out by each electric detonator is connected into a closed loop of the electric lead 9 of the detonator in a parallel mode, when the delay time of the electric detonator is detected, the upper cover 62 on the junction box 61 corresponding to the electric detonator is directly pressed down, the pressing block 65 on the upper cover 62 is pressed into the metal wire pressing groove 63, and the pressing block 65 rubs with the lead 8 and the electric lead 9 of the detonator in the process of pressing into the metal wire pressing groove 63 so as to remove the insulating skin on the surface of the lead 8 and the electric lead 9 of the detonator, so that the lead 8 is communicated with the electric lead 9 of the detonator.
Furthermore, the top of the metal wire pressing groove 63 is recessed downwards to form a groove body structure, the pressing block 65 can be inserted into the groove body structure, a certain gap is reserved between the groove body structure and the pressing block 65 in order to prevent the pressing block 65 from breaking the wire 8 and the detonator electric lead 9, and in order to ensure that the insulating sheaths of the wire 8 and the detonator electric lead 9 can be smoothly peeled off, the periphery of the top of the metal wire pressing groove 63 is arranged to be of an arc-shaped structure with a notch, and the notch is more beneficial to the peeling off of the insulating sheaths.
In addition, the explosion cylinder 3 is fixed on a back plate of the explosion-proof box 1 through a bolt, the central axis of the explosion cylinder 3 is perpendicular to the back plate of the explosion-proof box 1, a through hole for inserting a power supply detonator is formed in one end, far away from the back plate, of the explosion cylinder 3, a proper distance is reserved between the adjacent explosion cylinders 3, and the explosion cylinder 3 is made of an explosion-proof material, so that the phenomenon of serial explosion in the test process is prevented; for more accurate record electric detonator time node when exploding, vibration sensor 11 adopts piezoelectric type acceleration sensor or piezoelectric type force transducer, utilizes this sensor to turn into the electric quantity with mechanical vibration volume, then measures the electric quantity, and the time error is minimum to can improve test data's precision.
The invention provides a device for measuring delay time of an electric detonator, which comprises the following steps: firstly, all the electric detonators to be detected are inserted into the explosion cylinder 3, the isolation door 2 is covered, the electric lead wires 9 of the detonators are sequentially connected into the junction box assembly 6, the electric probes 12 are bound on the wires 8 of the electric detonators and are respectively connected into the corresponding junction boxes 61, the vibration sensor 11 is communicated with the tester 5, and the connection of the detection lines is intact. And then starting the initiator 7 and the tester 5, pressing down the upper cover 62 of the first junction box 61, wherein the time for the tester 5 to detect the current signal generated by the electric probe 12 is T1, the time for the tester 5 to detect the signal generated by the vibration sensor 11 after the electric detonator explodes is T2, and the time difference between T2 and T1 is the delay time of the electric detonator. And then sequentially pressing the upper cover 62 of the second to the last junction box 61 to detonate the electric detonators, and repeating the timing operation every time one electric detonator is detonated, so that the delay time data of all the electric detonators can be obtained.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (7)
1. The electric detonator delay time measuring device comprises an initiator, an electric detonator arranged in an explosion cylinder and a tester, wherein the initiator detonates the detonator through a detonator electric lead, and the electric detonator delay time measuring device is characterized in that: a junction box assembly is connected between the initiator and the electric detonators, and the detonation end of each electric detonator is connected into the junction box assembly in a parallel mode through a conducting wire; an electric probe is bound on a lead of the detonation end of each electric detonator, and the electric probe is connected with the tester through a signal wire; and each vibration sensor is arranged on the outer wall of each explosion cylinder and is connected with the tester through a signal wire.
2. The electric detonator delay time measuring device of claim 1, wherein: the junction box assembly comprises junction boxes which are sequentially arranged in parallel and have the same number as the electric detonators, an upper cover is hinged to each junction box, the conical end of each junction box is used for leading in the wires, two wire clamping grooves are formed in two side walls, connected with the conical end, of each junction box, the wire clamping grooves in the two side walls correspond to each other, two metal wire pressing grooves are formed in the junction box and located on a connecting line between the two corresponding wire clamping grooves in the two side walls, and the two metal wire pressing grooves are arranged in a staggered mode; the detonator electric lead sequentially penetrates through the wire clamping grooves of the junction boxes to form a closed loop; the tail end of the wire is led into the junction box and is lapped on the two metal wire pressing grooves; and a pressing block matched with the upper cover is arranged in the upper cover at the position corresponding to the two metal wire pressing grooves.
3. The electric detonator delay time measuring device according to claim 2, wherein: the top of the metal wire pressing groove is sunken downwards to form a groove body structure, and the peripheral edge of the top of the metal wire pressing groove is of an arc structure with a notch.
4. The electric detonator delay time measuring device of claim 1, wherein: the explosion-proof box is characterized by further comprising an explosion-proof box, the explosion cylinders are arranged in a rectangular array mode inside the explosion-proof box, a lead port for the lead to pass through is formed in the top of the explosion-proof box, and an isolation door made of explosion-proof materials is hinged to the front of the explosion-proof box.
5. The electric detonator delay time measuring device according to claim 4, wherein: the explosion tube is fixed on the back plate of the explosion-proof box through bolts, the central axis of the explosion tube is perpendicular to the back plate of the explosion-proof box, and one end, far away from the back plate, of the explosion tube is provided with a through hole for inserting a power supply detonator.
6. The electric detonator delay time measuring device of claim 1, wherein: the vibration sensor adopts a piezoelectric acceleration sensor or a piezoelectric force sensor.
7. A method of testing an electric detonator delay time measuring apparatus as claimed in any one of claims 1 to 6, wherein: the test method comprises the following steps:
s1, sequentially connecting the detonator electric lead to the junction box assembly, binding the electric probes on the lead of the electric detonator and respectively connecting the electric probes to the corresponding junction boxes, and communicating the vibration sensor with the tester;
s2, starting the detonator and the tester, pressing down the upper cover of the first junction box, wherein the time for the tester to detect the current signal generated by the electric probe is T1, the time for the tester to detect the signal generated by the vibration sensor after the electric detonator explodes is T2, and the time difference between T2 and T1 is the delay time of the electric detonator;
and S3, sequentially pressing the upper cover of the second junction box until the last junction box detonates the electric detonator, and repeating the timing in S2 every time one electric detonator is detonated.
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| CN202010696481.XA CN112066828B (en) | 2020-07-20 | 2020-07-20 | Delay time measuring device for electric detonator |
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| CN202010696481.XA CN112066828B (en) | 2020-07-20 | 2020-07-20 | Delay time measuring device for electric detonator |
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| CN112066828B CN112066828B (en) | 2022-11-18 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113587756A (en) * | 2021-08-30 | 2021-11-02 | 中国人民解放军陆军工程大学 | Multi-point detonation source differential delay detonation simulation device |
| CN113702438A (en) * | 2021-08-30 | 2021-11-26 | 中国人民解放军陆军工程大学 | Synchronous detonation simulation device for multi-point detonation source |
| CN113724569A (en) * | 2021-08-31 | 2021-11-30 | 中国人民解放军陆军工程大学 | Underwater multipoint detonation source differential delay detonation simulation device |
| CN113870678A (en) * | 2021-08-31 | 2021-12-31 | 中国人民解放军陆军工程大学 | Large-equivalent underground multipoint time-delay blasting bomb pit effect simulation device and method |
| CN113888948A (en) * | 2021-08-31 | 2022-01-04 | 中国人民解放军陆军工程大学 | Underwater multi-point detonation source aggregation synchronous explosion simulation device |
| CN114087933A (en) * | 2021-10-25 | 2022-02-25 | 北方爆破科技有限公司 | Device and method for measuring detonator delay time |
| CN114777585A (en) * | 2022-03-22 | 2022-07-22 | 中国工程物理研究院流体物理研究所 | Fixing device and method for measuring action time of detonator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113587756A (en) * | 2021-08-30 | 2021-11-02 | 中国人民解放军陆军工程大学 | Multi-point detonation source differential delay detonation simulation device |
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| CN113724569A (en) * | 2021-08-31 | 2021-11-30 | 中国人民解放军陆军工程大学 | Underwater multipoint detonation source differential delay detonation simulation device |
| CN113870678A (en) * | 2021-08-31 | 2021-12-31 | 中国人民解放军陆军工程大学 | Large-equivalent underground multipoint time-delay blasting bomb pit effect simulation device and method |
| CN113888948A (en) * | 2021-08-31 | 2022-01-04 | 中国人民解放军陆军工程大学 | Underwater multi-point detonation source aggregation synchronous explosion simulation device |
| CN114087933A (en) * | 2021-10-25 | 2022-02-25 | 北方爆破科技有限公司 | Device and method for measuring detonator delay time |
| CN114777585A (en) * | 2022-03-22 | 2022-07-22 | 中国工程物理研究院流体物理研究所 | Fixing device and method for measuring action time of detonator |
| CN114777585B (en) * | 2022-03-22 | 2023-05-02 | 中国工程物理研究院流体物理研究所 | Fixing device and method for detonator action time measurement |
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