Electronic detonator with large belt load function and initiation system
By designing electronic detonators with large load function and using optimized electronic control modules and transducer components, the problem of insufficient load capacity of existing electronic detonators is solved, and efficient and stable blasting construction is achieved, reducing costs and improving impact resistance.
Patent Information
- Application Number
- CN202411914829.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-03-14
AI Technical Summary
The insufficient load capacity of existing electronic detonators leads to cascade operation in large mine blasting construction, which is cumbersome and may cause communication instability, reducing construction efficiency and increasing equipment costs.
Design an electronic detonator with large load function, using electronic ignition elements and basic detonator. The electronic control module includes a PCB board, riveted terminal, filter capacitor, communication resistor and control chip. By optimizing chip communication and filter circuit, power consumption is reduced and communication stability is ensured.
The high load capacity of electronic detonators is achieved, cascade operation is reduced, blasting construction efficiency is improved, equipment costs are reduced, and the impact resistance of electronic detonators is enhanced.
Smart Images
Figure CN119617995A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of pyrotechnic design, and in particular to an electronic detonator with a large load capacity and an initiation system. Background Art
[0002] Since the 1980s, electronic detonators have been continuously developed and their technology has gradually matured. Electronic detonators have basically been fully promoted and applied.
[0003] For large mines, a single blasting uses a large amount of electronic detonators. The electronic detonator load capacity of the current initiator on the market is generally 300-400 rounds. It is necessary to use multiple initiators in cascade mode for detonation, which makes the operation more cumbersome. In addition, the initiator may have unstable communication in the cascade mode, which reduces the construction efficiency and increases the cost of the equipment. Therefore, it is necessary to design an electronic detonator and detonation system with a large load capacity to reduce or avoid cascade operations at large blasting construction sites. Summary of the invention
[0004] The technical problem to be solved by the present invention is to provide an electronic detonator with a large-bandwidth function and an initiation system. The electronic detonator with a large-bandwidth function can solve the problem of insufficient number of electronic detonators to be loaded by a single existing initiator, thereby providing convenience for blasting construction in large mines. The initiation system with a large-bandwidth function can implement large-load networked control initiation.
[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:
[0006] In a first aspect, the present invention provides an electronic detonator with a large load capacity, comprising an electronic ignition element and a basic detonator, wherein the electronic ignition element comprises a line card, a foot line, an electronic control module, a transducer element and an ignition charge head arranged on the transducer element, which are connected in sequence, wherein the electronic control module and the ignition charge head are located in the basic detonator, and the electronic control module comprises a PCB board, and a riveted terminal J1, a diode D1, a filter capacitor C1, a filter capacitor C2, a working capacitor C3, a communication resistor R1, a communication resistor R2, a control chip U 1. Ignition capacitor C4; the riveted terminal J1 is respectively connected to the foot line and the input end of the diode D1, the filter capacitor C1 and the filter capacitor C2 are connected in parallel to the output end of the diode D1, the working capacitor C3 and the control chip U1 are connected in parallel to the output ends of the filter capacitor C1 and the filter capacitor C2, the communication resistor R1 is connected in series between the diode D1 and the filter capacitor C1 and the filter capacitor C2, the communication capacitor R2 is connected in series between the working capacitor C3 and the control chip U1, and the two ends of the ignition capacitor C4 are respectively connected to the control chip U1 and the transducer element.
[0007] By adopting the above technical solution, when blasting construction is carried out on a large mine, the electronic detonator is connected to an initiator with a high-power power supply and a high-power output port, and the initiator can control the electronic detonator. When the electronic detonator is charged by the initiator, the current enters through the riveted terminal J1 and first enters the diode D1 to suppress the transient voltage, and then limits the current size through the communication resistor R1. After that, the filter capacitor C1 smoothes the current chip and limits the current size through the communication resistor R2. Then the current enters the working capacitor C3 and the control chip U1. In the extended state of the electronic detonator, the working capacitor C3 can provide energy for the control chip U1, and the control chip U1 can control the entire circuit and execute the instructions issued by the initiator to realize information exchange with the initiator. After receiving the charging instruction issued by the initiator, the control chip U1 turns on the internal MOS switch to charge the ignition capacitor C4. During detonation, the ignition capacitor C4 supplies power to the transducer element, and the transducer element converts electrical energy into thermal energy to ignite the ignition charge head for detonation.
[0008] In the above process, by improving the electronic control module, the chip communication and filtering circuits were optimized, which reduced the power consumption of the electronic control module while ensuring the communication stability, providing convenience for the blasting construction in large mines, thereby solving the problem of insufficient number of electronic detonators to be loaded on a single detonator, and thus providing convenience for the blasting construction in large mines.
[0009] Optionally, the electronic control module further includes a spring piece J5 disposed on the PCB board, and the spring piece J5 contacts the inner wall of the basic detonator.
[0010] By adopting the above technical solution, the shrapnel J5 can conduct static electricity to prevent static electricity from acting on the explosive and causing explosion.
[0011] Optionally, the ignition capacitor C4 is a tantalum capacitor.
[0012] By adopting the above technical solution, the reliability in an impact environment can be improved.
[0013] Optionally, the transducer element adopts an ignition bridge wire J2, and the ignition bridge wire J2 is located on the PCB board and connected to the ignition capacitor C4.
[0014] By adopting the above technical solution, the ignition capacitor C4 supplies power to the ignition bridge wire J2, and the ignition bridge wire J2 can convert electrical energy into thermal energy to ignite the ignition charge head for detonation.
[0015] Optionally, the energy conversion element adopts a chip resistor, a chip bridge wire, a chip energetic material or a semiconductor bridge, and is connected to the ignition capacitor C4 by SMT.
[0016] By adopting the above technical solution, the transducer element is connected to the ignition capacitor C4 by SMT, which can effectively improve the compactness of the structure and make it resistant to vibration and impact.
[0017] Optionally, a silicone protective sleeve is provided on the ignition powder head.
[0018] By adopting the above technical solution, the silicone protective sleeve can protect the ignition powder head.
[0019] Optionally, the basic detonator comprises a detonator shell and a multi-layer explosive filled in the detonator shell, a reinforcing cap is sleeved on a side of the explosive close to the ignition charge head, and a fire transfer hole is opened on the reinforcing cap.
[0020] By adopting the above technical solution, when detonation occurs, the ignition charge burns, and the fire transfer hole is used to transfer the energy generated by the ignition of the ignition charge, thereby triggering the explosion of the explosive.
[0021] Optionally, the PCB board is coated with injection plastic, and the gap between the PCB board and the detonator shell is greater than 1 mm.
[0022] By adopting the above technical solution, the injection molding glue is used to protect the PCB board and the above electronic components, and the gap greater than 1mm can provide deformation space for the impacted detonator shell.
[0023] The detonator shell is made of blue steel, and the wall thickness of the detonator shell is not less than 0.7 mm.
[0024] By adopting the above technical solution, the detonator shell made of blue steel with a wall thickness of not less than 0.7 mm has a strong ability to resist deformation.
[0025] In a second aspect, the present invention provides a detonating system with a large load-bearing function, comprising a detonator and at least one electronic detonator as described in the first aspect, wherein the detonator has a high-power power supply and a high-power output port, the high-power output port is connected to a detonating bus, and the card wire on the electronic detonator leg wire is connected to the detonating bus.
[0026] By adopting the above technical solution and using a detonator with a high-power power supply and a high-power output port for detonation, the load capacity of electronic detonators can be effectively increased. After designing and improving the electronic control module, large-load networked control detonation can be implemented.
[0027] In summary, the present invention at least includes the following beneficial technical effects:
[0028] By reducing the power consumption of a single electronic control module and increasing the output power of the detonator power supply, the load capacity is improved, the cascade operation during large-scale blasting networking is effectively reduced, the blasting construction efficiency is improved, and the cost of detonator expenditure is reduced; at the same time, by thickening the wall thickness of the detonator shell and increasing the gap between the detonator shell and the injection molded plug, the impact resistance of the electronic detonator is improved, and the probability of the electronic detonator refusing to explode due to impact in delayed blasting is reduced; and the detonation system is suitable for the above-mentioned electronic detonators with large load capacity. BRIEF DESCRIPTION OF THE DRAWINGS
[0029] Figure 1 Schematic diagram of the structure of an electronic detonator with a large load capacity in an embodiment of the present invention.
[0030] Figure 2 It is a schematic diagram of the electronic control module and the transducer element in the electronic detonator with large load capacity.
[0031] Explanation of the reference numerals: 1. Wire card; 2. Foot wire; 3. Electronic control module; 4. Transducer element; 5. Ignition head; 6. Detonator shell; 7. First layer of explosive; 8. Second layer of explosive; 9. Third layer of explosive; 10. Reinforcement cap; 11. Silicone protective tube sleeve. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0033] The terms used in the following embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to be used as limitations of the present invention. As used in the specification of the present invention and the appended claims, the singular expressions "one", "a kind of", "said", "above", "the" and "this" are intended to also include plural expressions, unless there is a clear contrary indication in its context. It should also be understood that the term "and / or" used in the present invention refers to and includes any or all possible combinations of one or more listed items. The term "exemplary" means "used as an example, embodiment or illustrative", and any embodiment described as "exemplary" here does not have to be interpreted as being superior to or better than other embodiments. The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as implying or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" can expressly or implicitly include one or more of these features, and in the description of the embodiments of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.
[0034] The embodiment of the present invention provides an electronic detonator with a large load capacity.
[0035] refer to Figure 1 , an electronic detonator with a large load capacity, comprising: an electronic ignition element and a basic detonator connected to the electronic ignition element.
[0036] The electronic ignition element comprises a line card 1, a foot line 2, an electronic control module 3, a transducer element 4 and an ignition charge head 5 arranged on the transducer element 4, which are connected in sequence. The electronic control module 3, the transducer element 4 and the ignition charge head 5 are located in the basic detonator.
[0037] refer to Figure 1 The basic detonator includes a detonator shell 6, and a first layer of explosives 7, a second layer of explosives 8, and a third layer of explosives 9 sequentially filled in the detonator shell 6. The first layer of explosives 7 is located at the bottom of the detonator shell 6, that is, at one end of the detonator shell 6 away from the electronic control module 3, the transducer element 4, and the ignition head 5. The electronic control module 3, the transducer element 4, and the ignition head 5 are arranged in the detonator shell 6. The ignition head 5 is located on the side of the third layer of explosives 9 away from the second layer of explosives 8. The third layer of explosives 9 is a priming agent. A reinforcing cap 10 is sleeved on the side of the third layer of explosives 9 close to the ignition head 5. The reinforcing cap 10 is made of blue steel. The reinforcing cap 10 is tightly fitted with the inner wall of the detonator shell 6, and a fire transfer hole is opened in the center for energy transfer generated by the ignition of the ignition agent, thereby stimulating the explosion of the explosives.
[0038] Among them, the line card 1 is used to connect the detonation network connection line, and the end of the foot line 2 away from the line card 1 is sleeved with an injection plug. After the injection plug is inserted into the tube hole at the free end of the detonator shell 6, it is assembled by a bayonet machine. The foot line 2 includes two double-strand composite wires. The wire core is drawn from a galvanized copper-clad steel core wire. The wire core is wrapped with a layer of inner insulating material. The two wire cores are composited into one by an outer insulating material. At one end of the injection plug of the foot line 2, the two wire cores are fixed to the electrodes of the electronic control module 3 by riveting first and then welding.
[0039] refer to Figure 1 and Figure 2 The electronic control module 3 includes a PCB board, and a riveted terminal J1, a diode D1, a filter capacitor C1, a filter capacitor C2, a working capacitor C3, a communication resistor R1, a communication resistor R2, a control chip U1, an ignition capacitor C4, and a spring J5 arranged on the PCB board.
[0040] Among them, the riveted terminal J1 is connected to the foot line 2 and the input end of the diode D1 respectively, the filter capacitor C1 and the filter capacitor C2 are connected in parallel to the output end of the diode D1, the working capacitor C3 and the control chip U1 are connected in parallel to the output ends of the filter capacitor C1 and the filter capacitor C2, one end of the ignition capacitor C4 is connected to the control chip U1, and the other end is connected to the transducer element 4. The spring J5 is fixed on the PCB board and contacts the inside of the detonator shell 6. The communication resistor R1 is connected in series between the diode D1 and the filter capacitors C1 and C2, and the communication capacitor R2 is connected in series between the working capacitor C3 and the control chip U1. The ignition capacitor C4 adopts a tantalum capacitor, which can improve the reliability under the impact environment.
[0041] The transducer element 4 is connected to the output end (ignition capacitor C4) of the electronic control module 3 by means of SMT (Surface Mount Technology). The transducer element 4 is composed of a chip resistor, a chip bridge wire, a chip energetic material or a semiconductor bridge. In the embodiment of the present application, the transducer element 4 is an ignition bridge wire J2, which is located on the PCB board of the electronic control module 3, and the ignition bridge wire J2 is connected to the ignition capacitor C4. The ignition powder head 5 is formed by dipping an ignition agent on the surface of the transducer element 4 (ignition bridge wire J2), and after drying, it is dipped in moisture-proof paint and then dried for a second time, and a silicone protective tube sleeve 11 is arranged around the ignition agent.
[0042] When the foot line 2 is electrically connected to the riveted terminal J1, the communication and power supply of the entire electronic control module 3 can be realized. Specifically, after the communication current enters through the riveted terminal J1, it first enters the diode D1 to suppress the transient voltage, and then the communication resistor R1 limits the communication current size, the filter capacitors C1 and C2 smooth the current signal, and then the communication resistor R2 limits the communication current size again, and the communication current enters the working capacitor C3 and the control chip U1. In the extended state of the electronic detonator, the working capacitor C3 can provide energy for the control chip U1, and the control chip U1 can control the entire circuit and execute the instructions issued by the detonator to realize the information exchange with the detonator. After the control chip U1 receives the charging instruction issued by the detonator, it turns on the internal MOS switch to charge the ignition capacitor C4. When detonating, turn on the detonation switch, the ignition capacitor C4 supplies power to the ignition bridge wire J2, and the ignition bridge wire J2 converts electrical energy into heat energy to ignite the ignition charge head 5 for detonation. The shrapnel J5 is used to derive static electricity to prevent static electricity from acting on the explosive and causing an explosion.
[0043] refer to Figure 1The PCB board of the electronic control module 3 is covered with plastic injection glue, which is used to protect the PCB board and the above-mentioned electronic components. Only the transducer element 4 and the electrodes at both ends are exposed. The diameter of the PCB board after injection molding is smaller than the inner diameter of the detonator shell 6, and the gap between the two is greater than 1mm, which provides deformation space for the impacted detonator shell 6 and reduces the squeezing effect of the detonator shell 6 on the electronic control module 3 after deformation. At the same time, the thickness of the detonator shell 6 is not less than 7mm, and it is made of blue steel, which has strong anti-deformation ability.
[0044] The first layer of explosives 7 and the second layer of explosives 8 of the basic detonator are both graphite granulated RDX explosives. The first layer of explosives 7 and the second layer of explosives 8 have different filling densities and are composed of nickel hydrazine nitrate. The third layer of explosives 9 is covered with an explosive protection tube cap at the far end, which is made of blue steel. The explosive protection tube cap fits tightly with the tube shell, and there is a fire transfer hole in the center for the energy generated by the ignition of the ignition agent to transfer, thereby triggering the explosion of the explosive.
[0045] The embodiment of the present invention also provides a detonation system with a large load capacity.
[0046] The detonating system with large load capacity comprises: a detonator and at least one of the above-mentioned electronic detonators, wherein the detonator is a universal detonator and has a high-power power supply and a high-power output port, the high-power output port is connected to a detonating bus, the card line on the electronic detonator leg line 2 is connected to the detonating bus, and the detonator communicates with and charges the electronic detonator through the detonating bus and the leg line 2.
[0047] In the above-mentioned electronic detonator and initiation system with large load capacity, the electronic control module 3 can enhance the signal analysis capability and stability margin under complex conditions by optimizing the chip communication algorithm and filtering circuit; at the same time, it can optimize the initiator digital filtering algorithm and hardware circuit, and ensure that the communication signal strength is improved under safe use conditions by appropriately increasing the communication voltage. The filtering performance is improved through software and hardware, ensuring the effective analysis of the chip reply signal under complex network conditions. Through the adjustment of the circuit hardware and the chip stability margin, the anti-leakage capability is enhanced and the power consumption of a single electronic control module 3 is reduced.
[0048] As described above, the above embodiments are only used to introduce the technical solution of the present invention in detail, but the description of the above embodiments is only used to help understand the method and core idea of the present invention and should not be understood as limiting the present invention. Changes or substitutions that can be easily thought of by technicians in this technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.
Claims
1. An electronic detonator with a large load capacity, comprising an electronic ignition element and a basic detonator, wherein the electronic ignition element comprises a line card (1), a foot line (2), an electronic control module (3), a transducer element (4) and an ignition head (5) arranged on the transducer element (4) connected in sequence, wherein the electronic control module (3) and the ignition head (5) are located in the basic detonator, and characterized in that: The electronic control module (3) comprises a PCB board, and a riveted terminal J1, a diode D1, a filter capacitor C1, a filter capacitor C2, a working capacitor C3, a communication resistor R1, a communication resistor R2, a control chip U1, and an ignition capacitor C4 arranged on the PCB board; the riveted terminal J1 is respectively connected to the foot line (2) and the input end of the diode D1, the filter capacitor C1 and the filter capacitor C2 are connected in parallel to the output end of the diode D1, the working capacitor C3 and the control chip U1 are connected in parallel to the output ends of the filter capacitor C1 and the filter capacitor C2, the communication resistor R1 is connected in series between the diode D1 and the filter capacitor C1 and the filter capacitor C2, the communication capacitor R2 is connected in series between the working capacitor C3 and the control chip U1, and the two ends of the ignition capacitor C4 are respectively connected to the control chip U1 and the transducer element (4).
2. The electronic detonator with large load capacity as claimed in claim 1, characterized in that: The electronic control module (3) further comprises a spring piece J5 arranged on the PCB board, and the spring piece J5 is in contact with the inner wall of the basic detonator.
3. The electronic detonator with large load capacity as claimed in claim 1, characterized in that: The ignition capacitor C4 is a tantalum capacitor.
4. The electronic detonator with large load capacity as claimed in any one of claims 1 to 3, characterized in that: The energy conversion element (4) adopts an ignition bridge wire J2, and the ignition bridge wire J2 is located on the PCB board and connected to the ignition capacitor C4.
5. The electronic detonator with large load capacity as claimed in any one of claims 1 to 3, characterized in that: The energy conversion element (4) is a chip resistor, a chip bridge wire, a chip energetic material or a semiconductor bridge, and is connected to the ignition capacitor C4 by means of SMT.
6. The electronic detonator with large load capacity as claimed in claim 4, characterized in that: The ignition powder head (5) is provided with a silicone protective sleeve.
7. The electronic detonator with large load capacity as claimed in claim 4, characterized in that: The basic detonator comprises a detonator shell (6) and a multi-layer explosive filled in the detonator shell (6); a reinforcing cap (10) is sleeved on one side of the explosive close to the ignition charge head (5); and a fire transmission hole is opened on the reinforcing cap (10).
8. The electronic detonator with large load capacity as claimed in claim 7, characterized in that: The PCB board is coated with plastic injection glue, and the gap between the PCB board and the detonator shell (6) is greater than 1 mm.
9. The electronic detonator with large load capacity as claimed in claim 7, characterized in that: The detonator shell (6) is made of blue steel, and the wall thickness of the detonator shell (6) is not less than 0.7 mm.
10. A detonation system with large load capacity, characterized in that: It comprises an initiator and at least one electronic detonator as claimed in any one of claims 1 to 9, wherein the initiator has a high-power power supply and a high-power output port, the high-power output port is connected to a detonating bus, and the clamping wire on the electronic detonator leg wire (2) is connected to the detonating bus.