Seismic exploration electronic detonator

Abstract

The utility model provides an electronic detonator for seismic exploration, which comprises a wire clamp, a conducting wire arranged below the wire clamp, a basic detonator arranged below the conducting wire, and the basic detonator consists of a shell, an initiating explosive, a transition explosive, a high explosive combination and a reinforcing cap. According to the electronic detonator for seismic exploration, the lead, the delay control module, the ignition powder, the initiating explosive, the transition explosive, the high explosive and other structures are arranged, the lead is made of pure copper, so that good conductivity is ensured, the initiation time is accurately controlled through the delay control module, and the delay precision of the detonator is improved; the trinitroresorcinol lead and the lead thiocyanate in a certain proportion are used as ignition powder, the hexogen is used as a high explosive, the Teramine is used as a transition explosive, and the perchloric acid tricarbohydrazide zinc is used as primary explosive, so that the requirements on the safety, the delay precision and the power capability of the detonator in the seismic exploration process are met; reliable application of the electronic detonator in seismic exploration is realized, and a powerful guarantee is provided for obtaining high-quality seismic exploration data.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion sources in the process of seismic exploration, and more specifically to an electronic detonator for seismic exploration. Background Art

[0002] Explosive sources are artificial sources widely used in seismic exploration. At present, a series of ground sources have been developed, such as heavy hammers, continuous vibration sources, pneumatic sources, etc., but the important source often used in land seismic exploration is still explosives. Let the detonator detonate the explosives, so that the explosion energy works on the medium to stimulate seismic waves. By studying the laws of seismic wave propagation in the strata to find out the underground geological conditions and thus find oil and gas fields, it has become one of the most effective exploration methods in oil exploration.

[0003] However, the existing detonators have the following problems when used:

[0004] (1) In the past few decades of oil seismic exploration, electric detonators have been used to excite explosives. This type of detonator is easy to detonate, and can be used with ordinary detonators or batteries, but its anti-static ability is poor, so the requirements for its transportation, storage, and use are very strict. The delay time accuracy of electric detonators is poor, the reliability of large-scale use is poor, the detection method is single, the detection items are limited, and the reliability of blasting cannot be effectively guaranteed;

[0005] (2) Secondly, although existing electronic detonators meet the requirements of high safety and reliability, they have been unable to enter the field of explosive source technology in the process of seismic exploration due to the mismatch between chips and agents and the inability of delay accuracy to meet the requirements of seismic exploration.

[0006] The utility model can improve the delay accuracy and instantaneous performance of detonators used in seismic exploration and realize the information management of detonators. Utility Model Content

[0007] The utility model aims to solve the technical problems raised by the above-mentioned background technology and provides an electronic detonator for seismic exploration.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electronic detonator for seismic exploration, comprising: a line card, a conducting wire is arranged below the line card, a basic detonator is arranged below the conducting wire, an electronic ignition element is arranged between the conducting wire and the basic detonator, an electrode plug is injection-molded at the terminal of the conducting wire, a delay control module is arranged at the bottom of the electrode plug, a tube shell is arranged below the electrode plug, a built-in knife edge of the line card is crimped and fixed to the conducting wire, the electronic ignition element comprises an electrode plug, a delay control module, ignition powder and a protective cover, the basic detonator is composed of a tube shell and a combination of a detonator, a transitional explosive and a high explosive pressed in sequence from top to bottom inside the tube shell, and a reinforcing cap is pressed above the detonator.

[0009] Further preferred solution: A wire passes through the electrode plug and is connected to the delay control module at the port. The part of the wire terminal passing through the electrode plug is subjected to stripping of the outer skin and inner skin.

[0010] Further preferred solution: The chip resistor of the delay control module is dipped with ignition powder, and a protective sleeve is nested on the surface of the ignition powder.

[0011] Further preferred solution: A resistor port is fixedly installed on the delay control module and is connected to the inner core wire port where the wire passes out of the electrode plug by riveting and welding.

[0012] Further preferred solution: A bayonet is provided on the bottom surface of the electrode plug, and the electrode plug is snap-connected to the shell through the bottom bayonet.

[0013] Further preferred solution: The protective sleeve is made of thermoplastic rubber and is nested and wrapped on the surface of the ignition powder.

[0014] Further preferred solution: A fire transfer hole is provided in the middle of the upper end of the reinforcing cap.

[0015] Beneficial effects:

[0016] 1. By providing a wire made of pure copper, due to the excellent electrical conductivity of the pure copper wire, it can effectively reduce the distortion, interference and attenuation of the electrical signal during transmission. In a complex seismic exploration environment, there may be various electromagnetic interference sources, but the pure copper wire can maintain the integrity of the electrical signal to the greatest extent, ensure that the detonation instruction is accurately transmitted to the inside of the detonator, can efficiently transmit current, improve the electrical conductivity of the wire, and reduce the impact on the transmission of electrical signals;

[0017] 2. By providing a delay control module, the bridge wire plays a key role in the detonation process of the detonator. Usually, a certain amount of current and time are required to heat up and trigger the subsequent explosion reaction. The delay control module can optimize the firing process of the bridge wire. By precisely controlling the current and time, it reduces the firing response time of the bridge wire, improves the chip delay accuracy, realizes more accurate synchronous detonation or detonation at a specific time, improves the quality and accuracy of exploration data, and realizes three-code binding to achieve full-process tracking and management of the detonator, improve the safety and management efficiency of the detonator, and prevent the illegal use and abuse of the detonator;

[0018] 3. By providing an ignition powder, the ignition powder is composed of a certain proportion of lead trinitroresorcinol and lead thiocyanate, which improves the delay accuracy and ignition reliability of the ignition powder. Lead trinitroresorcinol has high sensitivity and combustion performance. In the ignition powder, it can quickly respond to external stimuli such as electric current or heat, thereby initiating a combustion reaction. Its high sensitivity helps to reduce the ignition response time of the ignition agent. Lead thiocyanate plays a role in regulating the combustion speed and stability in the ignition powder. When used in combination with lead trinitroresorcinol, the performance of the ignition powder can be optimized. It can ensure a more stable combustion process, improve the delay accuracy of the ignition powder, and enable the detonator to be triggered in a shorter time;

[0019] 4. By setting up the detonator, transitional explosive and high explosive, tricarbohydrazide zinc perchlorate is used as the detonator, Taian is used as the transitional explosive, and RDX is used as the high explosive. The detonator (tricarbohydrazide zinc perchlorate) usually has a higher sensitivity and is easily stimulated by the flame or energy generated by the ignition powder and detonates quickly. As the starting point of the entire explosion reaction, its function is to trigger the explosion of subsequent explosives and provide the initial energy for the detonation of the entire detonator. The transitional explosive (Taian) connects the detonator and the high explosive, plays a connecting role, further amplifies the explosion energy generated by the detonator, and transmits it to the high explosive. It can ensure the smooth transition of the explosion energy and improve the stability of the entire explosion process. High explosive (RDX) has high energy output and is the main component that produces strong explosive force. Under the initiation of the detonator and the transition explosive, the high explosive releases huge energy, providing the required strong source energy for applications such as seismic exploration, ensuring the working ability of the detonator. In addition, the characteristics of different explosives cooperate with each other to improve the overall stability of the detonator, making the explosion process of the detonator more controllable. By accurately controlling the energy of the ignition charge and the delay control module, it can be ensured that the detonator is detonated in a predetermined manner at the required time, thereby improving safety.

[0020] 5. In summary, this type of electronic detonator for seismic exploration is provided with structures such as a conductor, a delay control module, an ignition charge, an explosive, a transitional explosive and a high explosive. The conductor is made of pure copper to ensure good electrical conductivity. The detonation time is accurately controlled by the delay control module, thereby improving the delay accuracy of the detonator. A certain proportion of lead trinitroresorcinol and lead thiocyanate is used as the ignition charge, RDX is used as the high explosive, Taian is used as the transitional explosive, and tricarbohydrazide zinc perchlorate is used as the explosive. The requirements for the safety, delay accuracy and working ability of the detonator in the process of seismic exploration are met, the reliable application of electronic detonators in seismic exploration is realized, and a strong guarantee is provided for obtaining high-quality seismic exploration data. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0022] Figure 2 This is a schematic cross-sectional view of the base detonator of the present utility model.

[0023] Figure 3 This is a schematic cross-sectional view of the booster cap of the present utility model.

[0024] Figure 4 This is a schematic view of the electronic ignition element structure of the present utility model.

[0025] Figure 5 This is a front view and a side view schematic of the ignition charge head of the present utility model.

[0026] Figures 1-5 In the figure: 1. Wire clip; 2. Conducting wire; 3. Electrode plug; 4. Delay control module; 5. Ignition charge; 6. Protective sleeve; 7. Casing; 8. Booster cap; 9. Primary explosive; 10. Transition explosive; 11. Main charge; 12. Flash hole; 13. Base detonator; 14. Electronic ignition element; 15. Resistance port. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached Figures 1-5 drawings in the embodiments of the present utility model.

[0028] Please refer to Figures 1-5, in the embodiment of the present utility model, an electronic detonator for seismic exploration includes: a wire clip 1, a wire 2 is arranged below the wire clip 1, a basic detonator 13 is arranged below the wire 2, an electronic ignition element 14 is arranged between the wire 2 and the basic detonator 13, an electrode plug 3 is injection-molded at the end of the wire 2, a delay control module 4 is arranged at the bottom of the electrode plug 3, a shell 7 is arranged below the electrode plug 3, the inner edge of the wire clip 1 is crimped and fixed with the wire 2, the electronic ignition element 14 includes the electrode plug 3, the delay control module 4, an ignition charge 5 and a protective sleeve 6, the basic detonator 13 is composed of the shell 7 and an initiating explosive 9, a transition explosive 10 and a main explosive 11 which are press-fitted from top to bottom inside it, a reinforcing cap 8 is press-fitted above the initiating explosive 9, the wire 2 passes through the electrode plug 3 and is connected to the delay control module 4 at the port, the part of the wire 2 passing through the electrode plug 3 at the end is stripped of the outer skin and the inner skin, the protective sleeve 6 is nested on the surface of the ignition charge 5, there are two edges inside the wire clip 1, which respectively crimp the two inner core wires of the wire 2, so that the wire 2 is connected to the initiating bus through the wire clip 1, ensuring the firm connection of the wire 2, preventing loosening or falling off during use, and ensuring the stability of current transmission. The wire 2 is a pure copper wire, which has good electrical conductivity and can effectively transmit current, providing the electrical energy required for initiation to the electronic ignition element 14 and the basic detonator 13. The basic detonator 13 is composed of the shell 7 press-fitting the initiating explosive 9, the transition explosive 10, the main explosive 11, and finally press-fitting the reinforcing cap 8 above the initiating explosive. The initiating explosive 9 usually has a high sensitivity and can be quickly ignited and detonated when stimulated by the flame or energy generated by the electronic ignition element 14. It is the starting point of the entire explosion reaction, and its function is to initiate the explosion of the subsequent explosives. The transition explosive 10 plays a role in connecting the initiating explosive 9 and the main explosive 11. It can further amplify the explosion energy generated by the initiating explosive 9 and transmit it to the main explosive 11 to ensure that the main explosive 11 can be reliably detonated. The main explosive 11 has a high energy output and is the main component generating a powerful explosive force. Under the initiation of the initiating explosive 9 and the transition explosive 10, the main explosive 11 releases a huge amount of energy, providing the seismic source energy required for seismic exploration. The electronic ignition element 14 is composed of the electrode plug 3 dipping the ignition charge 5 with the delay control module 4 and applying the protective sleeve 6. The electrode plug 3 serves as the current access point, introducing the external current into the electronic ignition element 14. The delay control module 4 can accurately control the initiation time according to actual needs, providing the possibility for synchronous initiation or initiation at a specific time in seismic exploration. The ignition charge 5 is ignited under the action of current, generating a high-temperature flame, thereby triggering the explosion reaction of the basic detonator 13. The protective sleeve 6 plays a protective role for the electronic ignition element 14, preventing it from being affected by external environmental factors such as moisture, dust, and impact, and ensuring the performance stability and reliability of the electronic ignition element. When the external control device issues an initiation signal, the current is transmitted through the wire 2. Since the wire 2 is made of pure copper and has good electrical conductivity, it can effectively transmit the electrical energy required for initiation to the inside of the electronic ignition element 14.The electrode plug 3 serves as the access point for the current, receiving the external current and introducing it into the electronic initiating element 14. After the current enters the electronic initiating element 14, the delay control module 4 performs precise control according to the preset time requirements. In seismic exploration, synchronous initiation or initiation at a specific time can be achieved according to actual needs. During the delay process, the electronic initiating element 14 is in a state of waiting to be excited. When the delay ends, the delay control module 4 transmits the current to the ignition charge 5. The ignition charge 5 is ignited under the action of the current, generating a high-temperature flame. The high-temperature flame quickly initiates the priming explosive 9 in the base detonator 13. Since the priming explosive 9 has a high sensitivity, it can be quickly ignited and detonated when stimulated by the flame or energy. The explosion of the priming explosive 9 serves as the starting point of the entire explosion reaction, and the generated energy is sequentially transmitted to the booster explosive 10 and the main explosive 11. The booster explosive 10 further amplifies the explosion energy generated by the priming explosive 9 and transmits it to the main explosive 11. The main explosive 11 releases a huge amount of energy under the initiation of the priming explosive 9 and the booster explosive 10, providing the seismic source energy required for seismic exploration.

[0029] In the embodiment of the present utility model, the delay control module 4 has a chip resistor dipped with the ignition charge 5. The inner layer of the delay control module 4 is dipped with lead styphnate, and the outer layer is dipped with lead thiocyanate. This substance, lead styphnate, has certain chemical stability and specific combustion characteristics. In the delay control module, it can adjust the burning speed of the ignition charge 5, thereby precisely controlling the delay time. Its stability can ensure that relatively consistent delay effects can be maintained under different environmental conditions, improving the accuracy of the detonator. The outer layer of lead thiocyanate plays a role in further stabilizing and regulating combustion. It acts in synergy with lead styphnate to jointly control the combustion process of the ignition charge, making the delay time more precise and reliable. At the same time, the presence of lead thiocyanate also enhances the anti-interference ability of the delay control module 4, ensuring that the detonator can work stably in the complex seismic exploration environment, achieving an overall improvement in the delay time and accuracy of the ignition charge 5, thus meeting the instantaneity and consistency of the seismic exploration electronic detonator.

[0030] In the embodiment of the present utility model, a resistance port 15 is fixedly installed on the delay control module 4 and is connected to the inner core wire port where the wire 2 passes through the electrode plug 3 by riveting or welding. Fixing and installing the resistance port 15 on the delay control module 4 provides a clear access point for the transmission of electrical signals. The design of this port makes the connection with the wire 2 more stable and reliable, reducing signal transmission problems caused by loose connections. Using riveting or welding to connect the inner core wire port where the wire 2 passes through the electrode plug 3 to the resistance port 15 of the delay control module 4 further enhances the firmness of the connection. Riveting can provide mechanical strength to ensure that the connection is not easily disconnected when subjected to external forces; welding achieves low resistance and high stability of the electrical connection through the fusion of metals, ensuring that electrical signals can be efficiently transmitted from the wire 2 to the delay control module 4.

[0031] In the embodiment of the present utility model, a bayonet is provided on the bottom surface of the electrode plug 3. The electrode plug 3 is snap-connected to the shell 7 through the bottom bayonet. A fire transfer hole 12 is provided in the middle of the upper end of the reinforcing cap 8. The bayonet connection between the electrode plug 3 and the shell 7 has high stability and sealing performance. The bayonet connection can ensure a tight combination between the electrode plug 3 and the shell 7, and it is not easy to loosen or separate, thus effectively preventing external substances from entering the inside of the detonator, realizing the isolation of the chip and the agent from the outside, ensuring the quality of the seismic exploration electronic detonator. The basic detonator 13 is formed by pressing cyclotrimethylenetrinitramine, pentaerythritol tetranitrate and zinc tricarbazide perchlorate into the shell 7. Cyclotrimethylenetrinitramine is a high-energy explosive with high explosion power; pentaerythritol tetranitrate is also a commonly used explosive with good stability and explosion performance; zinc tricarbazide perchlorate can play a specific role in the initiation process of the detonator, such as enhancing the explosion energy or improving the explosion performance. Finally, the reinforcing cap 8 with the fire transfer hole 12 is pressed. The existence of the fire transfer hole 12 enables the flame to be smoothly transmitted from the primary explosive to the subsequent explosives, realizing the transmission of the flame and the downward conduction of the detonation wave, meeting the safety requirements and the work capacity of the initiating explosive. And using zinc tricarbazide perchlorate as the primary explosive 9, pentaerythritol tetranitrate as the intermediate explosive 10, and cyclotrimethylenetrinitramine as the booster explosive 11, an effective energy transfer and amplification chain is formed, enabling the detonator to generate powerful explosion energy in a smaller volume, meeting the requirements of high energy output for applications such as seismic exploration. And according to specific seismic exploration requirements, the proportions and properties of the three explosives can be adjusted to adapt to different geological conditions, exploration depths and explosion effect requirements, providing powerful explosion performance, good safety and reliability for the seismic exploration electronic detonator, and adapting to the requirements of different application scenarios.

[0032] In the embodiment of the present utility model, the protective sleeve 6 is made of thermoplastic rubber and is nested and wrapped on the surface of the ignition charge 5. The ignition charge 5 is applied with the protective sleeve 6 and subjected to hot blow molding. Thermoplastic rubber can deform to a certain extent to adapt to ignition charges of different shapes, providing a tight wrap, and can effectively prevent damage to the ignition charge caused by external forces such as bumps during transportation, storage and use. At the same time, thermoplastic rubber usually has good insulation performance, which can prevent the ignition charge from contacting external conductive substances and reduce the risk of accidental initiation, realizing the protection of the ignition charge 5. Moreover, the binding effect of the protective sleeve 6 can concentrate the flame of the ignition charge 5. When the ignition charge is ignited, the flame is more concentrated and transmitted in a specific direction under the constraint of the protective sleeve 6, making the energy more concentratedly transmitted into the fire transfer hole 12, improving the ignition efficiency and reliability, and ensuring the smooth progress of the initiation process.

[0033] Working principle: During use, the initiating bus is connected to the wire clamp 1, establishing a channel between the external initiating device and the electronic detonator. The initiating voltage is transmitted to the wire 2 through the wire clamp 1. Due to the good electrical conductivity of the wire 2, the voltage can be efficiently transmitted to the subsequent components. Then, through the resistance end, 15, which is riveted or welded, the voltage is smoothly transmitted to the delay control module 4. In the delay control module 4, the capacitor built into the chip starts to charge, and this process accumulates energy for the subsequent initiating action. When the ready-to-explode initiating signal is sent out, the capacitor discharges to the chip resistor, and this discharge process generates local heat accumulation, providing an energy condition for igniting lead styphnate in the inner layer and lead thiocyanate in the outer layer of the delay control module 4. After the lead styphnate in the inner layer and lead thiocyanate in the outer layer are ignited by the local heat, the ignition charge 5 deflagrates to produce a flame, and the flame is quickly transmitted through the flash hole 12 of the strengthening cap 8. First, zinc trinitramide in the cartridge case 7 is detonated. The detonation of this explosive triggers a series of reactions, and the formed detonation wave conducts downward, acting on pentaerythritol tetranitrate and cyclotrimethylenetrinitramine in sequence. This process of energy transfer and amplification ensures the gradual increase of the explosion energy, ultimately achieving the purpose of detonating the explosive, realizing the precise initiation of the seismic exploration electronic detonator and a powerful explosion energy output, providing a reliable seismic source for seismic exploration.

Claims

1. An electronic detonator for seismic exploration, comprising: Wire clip (1), a wire (2) is arranged below the wire clip (1), a base detonator (13) is arranged below the wire (2), an electronic ignition element (14) is arranged between the wire (2) and the base detonator (13), an electrode plug (3) is injection molded at the terminal of the wire (2), a delay control module (4) is arranged at the bottom of the electrode plug (3), and a cartridge case (7) is arranged below the electrode plug (3), characterized in that: a blade is built in the wire clip (1) and crimped and fixed with the wire (2), the electronic ignition element (14) includes an electrode plug (3), a delay control module (4), ignition charge (5) and a protective sleeve (6), the base detonator (13) is composed of a cartridge case (7) and an initiating explosive (9), a transition explosive (10) and a main explosive (11) which are press-fitted in sequence from top to bottom inside it, and a booster cap (8) is press-fitted above the initiating explosive (9).

2. The electronic detonator for seismic exploration according to claim 1, characterized in that: The wire (2) penetrates through the electrode plug (3), and is connected with the delay control module (4) at the port, and the part of the wire (2) terminal passing through the electrode plug (3) is subjected to outer skin and inner skin stripping treatment.

3. An electronic detonator for seismic exploration according to claim 1, characterized in that: The chip resistor of the delay control module (4) is dipped with ignition charge (5), and a protective sleeve (6) is nested on the surface of the ignition charge (5).

4. The electronic detonator for seismic prospecting according to claim 3, characterized in that: A resistor port (15) is fixedly installed on the delay control module (4), and is connected with the inner core wire port of the wire (2) passing out of the electrode plug (3) by riveting and welding.

5. An electronic detonator for seismic exploration according to claim 1, characterized in that: A bayonet is arranged on the bottom surface of the electrode plug (3), and the electrode plug (3) is snap-connected with the cartridge case (7) through the bottom bayonet.

6. The electronic detonator for seismic exploration according to claim 1, characterized in that: The protective sleeve (6) is a thermoplastic rubber and is nested and wrapped on the surface of the ignition charge (5).

7. An electronic detonator for seismic exploration according to claim 1, characterized in that: A fire transfer hole (12) is opened in the middle of the upper end of the booster cap (8).

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