Series sensing prevention device

Abstract

The utility model provides an anti-crosstalk device, and relates to the technical field of electric spark sources. Comprising connecting clamps, wires and conductive piles. The connecting clamp is connected with a shielding shell of the electric spark source. One end of the wire is connected with the connecting clamp, and the other end is connected with the conductive pile. The connecting clamp and the conductive pile are both made of conductive materials. According to the anti-series-inductance device, the problem of series inductance of the high-power spark source is solved, the anti-series-inductance device effectively reduces electromagnetic radiation generated when the spark source works through the design of the shielding shell and the grounding part, interference of the electromagnetic radiation to surrounding receiving equipment is avoided, and the series inductance phenomenon is solved.

Description

Technical Field

[0001] This application relates to the technical field of spark seismic sources, and more particularly, to an anti-coupling induction device. Background Art

[0002] In the field of geological exploration, the traditional method of surface survey mainly relies on detonator excitation. However, with the increasing awareness of safety and environmental protection and the strictness of laws and regulations, the use of explosive seismic sources has been increasingly restricted. Therefore, the industry has gradually shifted to more safe, environmentally friendly, and cost-effective excitation methods, such as spark seismic sources and drop hammer seismic sources.

[0003] Although the drop hammer seismic source is easy to operate, its energy is weak and it is difficult to meet the requirements of high-power exploration. In contrast, the spark seismic source is regarded as the future development direction of the excitation method due to its significant advantages such as safety, environmental friendliness, low cost (only 1 / 5 of that of detonators), and reusability. Especially in exploration tasks that require high-energy excitation, the application prospect of the spark seismic source is particularly broad.

[0004] However, with the increase in the energy of the spark seismic source, a serious problem has gradually emerged - the coupling induction phenomenon. The coupling induction phenomenon refers to the fact that during the charging and discharging process of the spark seismic source, energy is radiated outward in the form of electromagnetic waves, and these electromagnetic waves will interfere with the nearby receiving geophones, resulting in serious interference to the received seismic signals, and even the key first arrival waves cannot be observed, thus making the single-shot record data unusable. This problem is particularly prominent in high-power spark seismic sources (especially those above 400,000 joules) and has become the main bottleneck restricting their popularization and application.

[0005] As shown in Table 1, spark seismic sources with energies of 20,000 joules and 50,000 joules can be used normally in surface production, with relatively high excitation success rates (above 99% and 95% respectively), and the voltage of the shielding shell to the ground is 0 volts during operation, showing good stability and shielding effect. However, when the power of the spark seismic source is increased to 400,000 joules and 600,000 joules, the voltage of its shielding shell to the ground suddenly rises to more than 40 volts, and the excitation success rate is almost 0%. Even if there is an occasional success, the first arrival wave cannot be observed, resulting in frequent occurrence of waste shot phenomena.

[0006] Table 1

[0007]

[0008]

[0009] In summary, although the sparker source has significant advantages in terms of safety, environmental protection and cost, its crosstalk phenomenon severely restricts the popularization and application of high-power sparker sources. Therefore, developing an effective anti-crosstalk device to solve the crosstalk problem and instrument instability problem of high-power sparker sources is of great significance for promoting the wide application of high-power sparker sources and the research and development of new excitation technologies. Summary of the Invention

[0010] This application aims to provide an anti-crosstalk device, aiming to solve the problems of instrument instability and crosstalk phenomenon when the sparker source operates at high power.

[0011] This application provides an anti-crosstalk device, including: a connecting clip, a wire and a conductive pile;

[0012] The connecting clip is connected to the shielding case of the sparker source;

[0013] One end of the wire is connected to the connecting clip, and the other end of the wire is connected to the conductive pile;

[0014] Both the connecting clip and the conductive pile are made of conductive materials.

[0015] Optionally, one end of the conductive pile is provided with an anti-smashing cap.

[0016] Optionally, the anti-smashing cap is arranged in a concave ring shape, and the end of the conductive pile is slidably embedded into the inside of the anti-smashing cap.

[0017] Optionally, the anti-smashing cap and the conductive pile are both provided with matching screw holes, and a connecting screw is threadedly inserted into the screw holes.

[0018] Optionally, one end of the screw is provided with a nut, one end of the wire close to the conductive pile is provided with a connecting ring, and the connecting ring is sleeved outside the screw, and the inner diameter of the connecting ring is smaller than the outer diameter of the nut.

[0019] Optionally, the screw, the nut and the connecting ring are all made of conductive materials.

[0020] Optionally, the end of the conductive pile away from the anti-smashing cap is arranged in a conical shape.

[0021] Optionally, the length of the conductive pile is 320 mm, and the diameter of the conductive pile is 30 mm.

[0022] Optionally, the diameter of the anti-smashing cap is 50 mm.

[0023] Optionally, the anti-smashing cap is made of steel.

[0024] Advantageous Effects:

[0025] This application provides an anti-inductive coupling device to solve the problem of inductive coupling in high-power electric spark sources. Through the design of its shielding shell and grounding part, the anti-inductive coupling device effectively reduces the electromagnetic radiation generated by the electric spark source during operation, avoiding interference to surrounding receiving devices from this radiation, and thus solving the problem of inductive coupling. The device makes the voltage of the shielding shell to the ground reach 0 volts, which is a key indicator to measure the shielding effect, ensuring the effectiveness of electromagnetic shielding. By finding a reference ground (the earth) for the signal and balancing the energy impact during the excitation of the electric spark source, the entire instrument circuit reaches a balanced state, solving the instability problem of the instrument caused by the floating signal. Brief Description of the Drawings

[0026] To more clearly illustrate the technical solutions of the embodiments of this application, the following will briefly introduce the drawings required for the description of the embodiments of this application. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 is a schematic cross-sectional structure diagram of an anti-inductive coupling device proposed in an embodiment of this application;

[0028] Figure 2 is a signal diagram (without initial wave) received by an electric spark source without using an anti-inductive coupling device at a power of 600,000 joules in an embodiment of this application;

[0029] Figure 3 is a signal diagram received by an electric spark source using an anti-inductive coupling device at a power of 400,000 joules in an embodiment of this application;

[0030] Figure 4 is a signal diagram received by an electric spark source using an anti-inductive coupling device at a power of 600,000 joules in an embodiment of this application;

[0031] Description of the reference numerals: wire 1, conductive pile 2, anti-smashing cap 3, screw hole 4, connecting screw 5, nut 6, connecting ring 7. Detailed Description of the Embodiments

[0032] The following will clearly and completely describe the technical solutions in the embodiments of this application with reference to the drawings in the embodiments of this application. Obviously, the described embodiments are some, rather than all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts belong to the scope of protection of this application.

[0033] In the related art, when an electric spark source operates at high power, especially when the power reaches a high level such as 400,000 joules, the electromagnetic field intensity generated during the charging process increases significantly. This high-intensity electromagnetic field has a non-negligible impact on the shielding shell of the electric spark source. Specifically, as the power increases, the electromagnetic field can not only more easily penetrate or bypass the shielding shell, but also causes a significant increase in the ground voltage of the shielding shell, which actually weakens the original electromagnetic shielding effectiveness of the shielding shell.

[0034] As a key component to protect the internal components of the electric spark source from external electromagnetic interference and prevent internal electromagnetic radiation leakage, the decline in the effectiveness of the shielding shell will directly trigger a series of problems. First, the electromagnetic compatibility problems among the components inside the source are exacerbated, and the risk of mutual interference increases significantly, which may seriously hinder the normal excitation process of the electric spark source, resulting in excitation failure.

[0035] Secondly, even in extreme cases where the electric spark source can barely complete the excitation, due to the insufficient shielding effect of the shielding shell, the energy impact generated during excitation causes the entire instrument circuit to lose its balanced state, which may directly interfere with the excitation effect and subsequent receiving equipment. After receiving these severely interfered signals, the receiving equipment will face great difficulties in identifying or distinguishing the effective initial wave signals, which often leads to the inability to effectively utilize the signals, thereby affecting the accuracy and reliability of the entire exploration or detection work.

[0036] In view of this, an anti-crosstalk induction device is proposed in the embodiments of the present application.

[0037] As Figure 1 shown, an anti-crosstalk induction device includes a connecting clip, a wire 1, and a conductive pile 2. The connecting clip is connected to the shielding shell of the electric spark source. One end of the wire 1 is connected to the connecting clip, and the other end of the wire 1 is connected to the conductive pile 2. Both the connecting clip and the conductive pile 2 are made of conductive materials.

[0038] Specifically, the connecting clip is used to clamp onto the shielding shell of the electric spark source, and the connecting clip is made of conductive material. The wire 1 is used to connect the connecting clip and the conductive pile 2. The conductive pile 2 is also made of conductive material, and both the connecting clip and the conductive pile 2 are conductively connected to the wire 1, that is, the core of the wire 1 is in direct contact with the connecting clip and the conductive pile 2. Through the connecting clip, the wire 1, and the conductive pile 2 being closely connected to the ground, a complete conductive path is formed, so that the shielding shell of the electric spark source is conductively connected to the conductive pile 2. During use, by inserting the conductive pile 2 into the ground, the shielding shell of the electric spark source can be connected to the ground.

[0039] When the existing electrospark seismic source device works at high power, such as when charging the electrospark seismic source at a power of 400,000 joules, the magnetic field generated during charging will cause the shielding shell to fail or its performance to decline, and will cause an induced voltage in the shielding shell, resulting in series induction of the electrospark seismic source device.

[0040] As Figure 2 shown, the energy impact generated when the excitation is successful causes the entire instrument circuit to lose its balanced state, resulting in no initial wave signal when receiving signals.

[0041] As Figure 3 and Figure 4 shown, after connecting the shielding shell of the electrospark seismic source to the ground through the wire 1, the connection clip and the conductive pile 2. The increased voltage in the shielding shell in the high-energy electromagnetic field will be immediately balanced by the ground, so the relative voltage between the shielding shell of the electrospark seismic source and the ground will always be 0 volts. Thus, the shielding shell will always have a shielding effect, so that when the electrospark seismic source is charged, the shielding shell can also isolate and protect each component of the electrospark seismic source from being interfered, so that the charging can be successfully completed. And when the electrospark seismic source is excited, the isolation effect can also be maintained, and the signal will not be interfered, so that the entire instrument circuit reaches a balanced state, enabling the receiving device to receive a complete signal, thus realizing the high-power operation of the electrospark seismic source.

[0042] As Figure 1 shown, further, when assembling and using the conductive pile 2, the conductive pile 2 needs to be inserted into the ground, but it is difficult to reach the predetermined depth directly by insertion, so the conductive pile 2 needs to be knocked to make the conductive pile 2 reach the predetermined depth. However, knocking the conductive pile 2 easily causes the conductive pile 2 to be damaged. In order to protect the conductive pile 2 and make the conductive pile 2 have a longer service life. One end of the conductive pile 2 is provided with an anti-smashing cap 3. When inserting the conductive pile 2 into the ground, the conductive pile 2 can be made to enter the ground by knocking the anti-smashing cap 3, thus preventing the conductive pile 2 from being directly knocked and preventing the conductive pile 2 from being damaged by knocking.

[0043] Specifically, the anti-smashing cap 3 is arranged in a concave ring shape, and the end of the conductive pile 2 is slidably embedded inside the anti-smashing cap 3. In this way, the anti-smashing cap 3 is sleeved and wrapped around the end of the conductive pile 2, and it is wrapped around the conductive pile 2. The overall diameter of the anti-smashing cap 3 is larger than that of the conductive pile 2, so the surface of the anti-smashing cap 3 being knocked is larger than directly knocking the end face of the conductive pile 2. In this way, it is more difficult to knock the anti-smashing cap 3 out of shape, increasing the service life of the anti-smashing cap 3.

[0044] Furthermore, during long-term knocking, the anti-smashing cap 3 is more likely to be damaged compared to the conductive pile 2. After the anti-smashing cap 3 is damaged, it needs to be disassembled and replaced. The anti-smashing cap 3 and the conductive pile 2 are both provided with matching screw holes 4, and a connecting screw 5 is threadedly inserted into the screw hole 4. This makes the anti-smashing cap 3 and the conductive pile 2 detachably connected. Thus, after the anti-smashing cap 3 is damaged by knocking, the damaged anti-smashing cap 3 can be removed by removing the connecting screw 5, and a intact anti-smashing cap 3 can be replaced. Then, by installing the connecting screw 5 back into the screw hole 4, the replacement of the anti-smashing cap 3 can be completed quickly.

[0045] Furthermore, in order to quickly and conveniently connect the wire 1 and the conductive pile 2. One end of the screw 6 is provided with a nut 6. One end of the wire 1 close to the conductive pile 2 is provided with a connecting ring 7, and the connecting ring 7 is sleeved outside the screw 6, and the inner diameter of the connecting ring 7 is smaller than the outer diameter of the nut 6.

[0046] The nut 6 is used to hold the connecting ring 7 so that the connecting ring 7 will not fall off between the nut 6 and the anti-smashing cap 3. The connecting ring 7 is directly connected to the core of the wire 1.

[0047] Furthermore, in order to ensure the conductive path between the wire 1 and the conductive pile 2, the screw 6, the nut 6 and the connecting ring 7 are all made of conductive materials. In this way, the wire 1 can be conductively connected to the screw 6 through the connecting ring 7. When the screw 6 is inserted into the screw hole 4, the screw 6 will contact the conductive pile 2, so that the screw 6 is conductively connected to the conductive pile 2.

[0048] Specifically, the anti-smashing cap 3 is made of steel, the screw 6 and the nut 6 are made of brass, and the conductive pile 2 is made of red copper. Among them, the steel anti-smashing cap 3 is selected as the main material of the anti-smashing cap 3 due to its high strength, good impact resistance and wear resistance. In the field of safety protection, steel can effectively resist the impact of heavy objects. In addition, steel is easy to be processed into various shapes to meet the design requirements of the anti-smashing cap. The screw 6 and the nut 6, as conductive fasteners made of brass, not only have good electrical conductivity, but also excellent corrosion resistance and processing performance. This enables the screw and the nut to maintain a stable conductive connection for a long time and resist the erosion of environmental factors. The conductive pile 2 made of red copper is an ideal material in electrical connection due to its high electrical conductivity, good thermal conductivity and plasticity. In the spark shock source device, the red copper conductive pile can ensure the efficient transmission of current and withstand the heat generated during the operation of the device.

[0049] In an alternative embodiment, the anti-smashing cap 3 can also be made of aluminum alloy or titanium alloy. Aluminum alloy is lightweight and has high strength, while also having good corrosion resistance and workability. As the material of the anti-smashing cap 3, aluminum alloy can reduce the overall weight while ensuring the protection performance, improving the portability and installation efficiency of the equipment. Stainless steel has extremely high corrosion resistance and rust resistance, and can maintain its stable performance even in harsh environments. Although the density of stainless steel is higher than that of aluminum alloy, its excellent durability makes it an ideal choice for long-term use.

[0050] In an alternative embodiment, the screw 6 and the nut 6 can be made of stainless steel or titanium alloy. Compared with brass, stainless steel has higher strength and better corrosion resistance. In cases where higher strength and longer service life are required, the stainless steel screw 6 and nut 6 are better choices. Titanium alloy is a lightweight and high-strength material, and at the same time has good corrosion resistance and fatigue resistance. Although the cost is relatively high, titanium alloy fasteners perform excellently in extreme environments and are suitable for occasions with strict requirements for weight and performance.

[0051] In an alternative embodiment, the conductive pile 2 can be made of nickel-plated copper. Nickel-plated copper is a composite material with a layer of nickel plated on the surface of pure copper. The nickel layer not only improves the corrosion resistance and wear resistance of copper, but also maintains the high electrical conductivity of copper. The nickel-plated copper conductive pile extends the service life and reduces the maintenance cost while maintaining excellent electrical conductivity.

[0052] Furthermore, in order to more conveniently and efficiently insert the conductive pile 2 firmly into the ground, one end of the conductive pile 2 away from the anti-smashing cap 3 is tapered. The tapered design significantly reduces the resistance when the conductive pile 2 is inserted into the ground. When the tapered tip of the conductive pile 2 contacts the ground and a downward pressure is applied, its gradually expanding shape can naturally guide the soil to separate to both sides, forming a smooth insertion path. This "self-guiding" insertion mechanism not only reduces the labor intensity of the operator, but also greatly improves the insertion efficiency, enabling the installation of the conductive pile 2 to be easily completed even under complex or hard soil conditions.

[0053] Secondly, the tapered design enhances the contact area and stability between the conductive pile 2 and the ground. As the conductive pile penetrates deeper, the tapered part of the conductive pile 2 gradually expands, forming a wider contact surface with the surrounding soil. This large-area contact not only helps to disperse the pressure borne by the conductive pile, preventing damage caused by excessive single-point stress, but also enhances the fixing effect of the conductive pile 2 in the ground through the frictional action between soil particles, preventing the conductive pile 2 from loosening or shifting during subsequent use.

[0054] In addition, the conical design of the conductive pile 2 also takes into account the diversity of soil types. Whether it is soft sandy soil, sticky clay or hard rock layer, the conical structure can, to a certain extent, adapt to and penetrate these different types of soil. This extensive adaptability enables the conductive pile to play a stable grounding role under various geological conditions.

[0055] Furthermore, the length of the conductive pile 2 is 320 mm, and the diameter of the conductive pile 2 is 30 mm. The length of 320 mm can ensure that the conductive pile 2 can be fully inserted into the ground to achieve a stable grounding effect. This length is neither too short to avoid problems such as excessive grounding resistance or insufficient stability caused by insufficient insertion depth, nor too long, thus maintaining the installation convenience and efficiency. Through this length setting, the conductive pile 2 can effectively penetrate the soil surface layer and contact the deeper soil or rock layer to form a more reliable electrical connection.

[0056] The selection of the 30 mm diameter of the conductive pile 2 takes into account the requirements of both electrical conductivity and structural strength. On the one hand, a larger diameter helps to increase the contact area between the conductive pile and the soil, reduce the grounding resistance, and improve the electrical conductivity efficiency. For the strong electromagnetic field generated by the sparker source device under high-power operation, this can ensure that the induced voltage on the shielding shell is quickly absorbed and balanced by the ground. On the other hand, an appropriate diameter can also ensure that the conductive pile 2 has sufficient structural strength during insertion and use to resist external force impacts and soil pressure, preventing accidents such as deformation or fracture.

[0057] In addition, the 320 mm length and 30 mm diameter of the conductive pile 2 also take into account the material utilization rate and cost-effectiveness. On the premise of ensuring electrical conductivity and structural strength, through reasonable size design, the material usage can be minimized and the production cost can be reduced. At the same time, this size is also convenient for the manufacturing, processing and transportation of the conductive pile, improving the production efficiency and use convenience.

[0058] Furthermore, the diameter of the anti-smashing cap 3 is 50 mm. The anti-smashing cap 3 with a diameter of 50 mm has a sufficient coverage area, which can effectively disperse the impact force from above and prevent the top of the conductive pile from being damaged due to direct force. In addition, the larger diameter can also increase the contact area between the anti-smashing cap 3 and the conductive pile 2, improve the stability of the connection, and prevent loosening or falling off during use. And it is easier to grasp and install during operation. The operator can easily pick up the anti-smashing cap and accurately place it on the top of the conductive pile without excessive adjustment and calibration. This convenience not only improves work efficiency but also reduces potential problems caused by improper installation. The larger diameter can also provide more material thickness and strength for the anti-smashing cap 3, thereby enhancing its ability to withstand impact and extrusion. This is particularly important for the spark source equipment used in complex or harsh working environments, which can ensure that the equipment remains stable and safe when subjected to accidental impacts.

[0059] After using the anti-crosstalk induction device in the connection of the spark source, taking the loess tableland area as an example, the statistical results in Table 2 are obtained through experiments.

[0060] Table 2

[0061]

[0062] As can be seen from Table 2, the spark source can work normally, the voltage of the shielding shell to the ground is 0 V, and the instrument is stable and can be normally excited.

[0063] It should be noted that the various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0064] It should also be noted that in this text, the orientation or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to this application. In addition, relative terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor can they be construed as indicating or implying relative importance. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or terminal device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or terminal device. Without further limitation, an element defined by the statement "comprising one..." does not exclude the existence of additional identical elements in the process, method, article or terminal device comprising the element.

[0065] The technical solutions provided in this application have been introduced in detail above. Specific examples have been used in this text to elaborate on the principles and implementation manners of this application. The description of the above embodiments is only for helping to understand this application, and the content of this specification should not be construed as a limitation to this application. At the same time, for those of ordinary skill in the art, based on this application, there will be various forms of changes in the specific implementation manners and application scopes. It is not necessary and impossible to enumerate all the implementation manners here, and the obvious changes or variations derived therefrom are still within the protection scope of this application.

Claims

1. An anti-inductive coupling device, characterized in that, Including: A connection clip, a wire, and a conductive pile; The connection clip is connected to the shielding case of the spark shock source; One end of the wire is connected to the connection clip, and the other end of the wire is connected to the conductive pile; Both the connection clip and the conductive pile are made of conductive materials.

2. The anti-inductive coupling device according to claim 1, wherein One end of the conductive pile is provided with an anti-smashing cap.

3. The anti-inductive coupling device according to claim 2, wherein The anti-smashing cap is arranged in a concave ring shape, and the end of the conductive pile is slidably embedded inside the anti-smashing cap.

4. The anti-inductive coupling device according to claim 3, characterized in that, Both the anti-smashing cap and the conductive pile are provided with mutually matching screw holes, and a connection screw is threadedly inserted inside the screw holes.

5. The anti-inductive coupling device according to claim 4, characterized in that, One end of the screw is provided with a nut, one end of the wire close to the conductive pile is provided with a connection ring, and the connection ring is sleeved outside the screw, and the inner diameter of the connection ring is smaller than the outer diameter of the nut.

6. The anti-inductive coupling device according to claim 5, wherein, The screw, the nut, and the connection ring are all made of conductive materials.

7. The anti-coupling induction device according to claim 2, wherein The end of the conductive pile away from the anti-smashing cap is arranged in a conical shape.

8. The anti-inductive coupling device according to claim 1, wherein The length of the conductive pile is 320 mm, and the diameter of the conductive pile is 30 mm.

9. The anti-inductive coupling device according to claim 2, characterized in that, The diameter of the anti-smashing cap is 50 mm.

10. The anti-inductive coupling device according to claim 5, wherein The anti-smashing cap is made of steel.

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