A shock wave generator and a method for regulating output power thereof

Abstract

The application discloses a shock wave generator and an output power adjusting method thereof. The shock wave generator comprises an energy converter, a high-voltage electrode, a low-voltage electrode and a metal wire. The energy converter is provided with a window for the shock wave to pass through. The high-voltage electrode and the low-voltage electrode are arranged on both sides of the window in the energy converter. The metal wire is arranged in the window, and both ends of the metal wire are connected to the high-voltage electrode and the low-voltage electrode. The metal wire has a tubular structure. The method comprises the following steps: the metal wire with a tubular structure is used, the cross-sectional area of the metal wire is changed to adjust the resistance R of the metal wire, and then the output power of the shock wave generator is adjusted. The application solves the problem that in the prior art, the new metal wire is supplemented through a wire feeding mechanism, the metal wire is occasionally deformed and has an axis offset phenomenon, and the end of the metal wire cannot be accurately aligned and a stable contact interface with the high-voltage electrode is formed.

Description

Technical Field

[0001] This application belongs to the field of metal wire electric explosion technology, specifically relating to a shock wave generator and its output power adjustment method. Background Technology

[0002] A metal wire is placed between the high-voltage and low-voltage electrodes of the energy converter in the shock wave generator. A short-circuit discharge is applied to the wire through the high-voltage and low-voltage electrodes, injecting a pulsed current with specific parameters. Under Joule heating, the wire undergoes a rapid phase transition, successively experiencing solid, liquid, gas, and plasma states, ultimately forming a plasma channel. The plasma arc resistor, under the influence of the subsequent discharge current, heats the surrounding water medium using the Joule heating principle, causing it to rapidly vaporize and expand, accompanied by physical phenomena such as light radiation and shock waves. The resistance of the metal wire changes non-linearly during the phase transition. By using different materials and structures for the metal wire, the initial resistance of the metal can be increased, and the ratio of the wire resistance to the conduction and contact resistance of the discharge circuit can be increased, thereby improving energy conversion efficiency and reducing energy deposited on the conduction and contact resistance, as well as damage to the equipment. The shock wave generated by the energy converter using the principle of metal wire electric explosion can fracture coal seams, rock strata, and rocks when applied to targets such as coal seams, rock strata, or rocks. The shock waves generated by the energy converter are highly controllable and have a good fracturing effect. Therefore, the energy converter is expected to replace traditional fracturing methods, such as hydraulic fracturing and gunpowder fracturing.

[0003] After a metal wire detonates, new metal wire must be replenished promptly to ensure the shock wave generator can operate repeatedly. Currently, a wire feeding mechanism pushes the new wire between the high-voltage and low-voltage electrodes. However, during the actual pushing process, the wire occasionally deforms and its axis shifts, causing its end to fail to align precisely and form a stable contact interface with the high-voltage electrode. This deviation affects the normal operation of the shock wave generator. Summary of the Invention

[0004] This application provides a shock wave generator and its output power adjustment method, which solves the problem in the prior art where, when a new metal wire is added through a wire feeding mechanism, the metal wire may occasionally deform and its axis may shift, resulting in the metal wire end not being accurately aligned and unable to form a stable contact interface with the high-voltage electrode.

[0005] To achieve the above objectives, embodiments of the present invention provide a shock wave generator, including an energy converter, a high-voltage electrode, a low-voltage electrode, and a metal wire;

[0006] The energy converter is provided with a window for the shock wave to pass through. The high-voltage electrode and the low-voltage electrode are respectively provided on both sides of the window inside the energy converter. The metal wire is disposed inside the window, and the two ends of the metal wire are respectively connected to the high-voltage electrode and the low-voltage electrode.

[0007] The metal wire has a tubular structure.

[0008] In one possible implementation, the sidewalls of the metal wire are provided with grooves.

[0009] This invention also provides a method for adjusting the output power of a shock wave generator, using the aforementioned shock wave generator, comprising the following steps:

[0010] The metal wire with a tubular structure is used. The resistance R of the metal wire is adjusted by changing the cross-sectional area of ​​the metal wire, thereby adjusting the output power of the shock wave generator.

[0011] Resistance of metal wire Where L is the length of the metal wire, r1 is the outer diameter of the metal wire, r2 is the inner diameter of the metal wire, and k is the resistivity of the material used for the metal wire.

[0012] In one possible implementation, by increasing the wall thickness of the metal wire and creating grooves on the outer wall of the metal wire, the resistance and mass of the metal wire are kept within a set range, thereby keeping the output power of the shock wave generator within a set range.

[0013] In one possible implementation, a groove is formed on the outer wall of the metal wire, the length of the groove being S and the cross-sectional area of ​​the groove being n.

[0014] The resistance of the metal wire is R = R1 + R2;

[0015] Resistance of the metal wire in the slotted section

[0016] Resistance of a metal wire without a groove section

[0017] In one possible implementation, a group of grooves are uniformly opened along the length of the metal wire, and each group of grooves includes b grooves evenly distributed on the outer wall of the metal wire.

[0018] Therefore, the resistance of the metal wire with the slotted section

[0019] Resistance of a metal wire without a groove section

[0020] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages:

[0021] This invention provides a shock wave generator and its output power adjustment method. The invention manufactures a metal wire into a tubular structure, which improves the axial structural strength of the wire, preventing deformation and axial misalignment during installation. This ensures precise alignment of the wire end with the high-voltage electrode, forming a stable contact interface for normal operation of the shock wave generator. The metal wire structure of this shock wave generator is simple, practical, and easy to promote. The output power of the shock wave generator is directly proportional to the resistance of the metal wire. Therefore, by changing the cross-sectional area of ​​the metal wire, its resistance can be adjusted, thereby regulating the output power of the shock wave generator. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of a shock wave generator provided in an embodiment of the present invention.

[0024] Figure 2 This is a schematic diagram of the structure of the metal wire provided in an embodiment of the present invention.

[0025] Figure 3 This is a cross-sectional view of the metal wire in the groove provided in an embodiment of the present invention.

[0026] Reference numerals: 1-Energy converter; 11-Window; 2-High voltage electrode; 3-Low voltage electrode; 4-Metal wire; 41-Tank. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0029] like Figures 1 to 3 As shown, the shock wave generator provided in this embodiment of the invention includes an energy converter 1, a high-voltage electrode 2, a low-voltage electrode 3, and a metal wire 4.

[0030] The energy converter 1 is provided with a window 11 for the shock wave to pass through. Inside the energy converter 1, a high-voltage electrode 2 and a low-voltage electrode 3 are respectively provided on both sides of the window 11. A metal wire 4 is provided inside the window 11, and the two ends of the metal wire 4 are respectively connected to the high-voltage electrode 2 and the low-voltage electrode 3.

[0031] Metal wire 4 has a tubular structure.

[0032] It should be noted that the existing metal wire 4 has a filamentous structure, resulting in poor axial structural strength. Consequently, during the pushing process, the metal wire 4 deforms and its axis shifts. Having derived this cause, improving the axial structural strength of the metal wire 4 is the solution to this technical problem. Our experiments revealed that manufacturing the metal wire 4 as a tubular structure improves its axial structural strength, preventing deformation and axis shift during pushing. This ensures precise alignment of the end of the metal wire 4 with the high-voltage electrode 2, forming a stable contact interface and enabling the shock wave generator to function normally. The metal wire 4 structure of the shock wave generator of this invention is simple, practical, and easy to promote and use.

[0033] In this embodiment, the sidewall of the metal wire 4 is provided with a groove 41.

[0034] It should be noted that the groove 41 is either a groove on the outer wall of the metal wire 4 or a hole on the side wall of the metal wire 4. By setting the groove 41, the metal wire 4 can have a thicker side wall while maintaining the same mass and resistance, thereby further improving the axial structural strength of the metal wire 4 and ensuring the output power of the shock wave generator.

[0035] like Figures 1 to 3 As shown in the figure, an embodiment of the present invention provides a method for adjusting the output power of a shock wave generator, which uses the above-mentioned shock wave generator and includes the following steps:

[0036] The metal wire 4 has a tubular structure. By changing the cross-sectional area of ​​the metal wire 4, the resistance R of the metal wire 4 can be adjusted, thereby adjusting the output power of the shock wave generator.

[0037] Resistance of metal wire 4 Where L is the length of the metal wire 4, r1 is the outer diameter of the metal wire 4, r2 is the inner diameter of the metal wire 4, and k is the resistivity of the material used for the metal wire 4.

[0038] It should be noted that the cross-sectional area of ​​metal wire 4 is... The mass of metal wire 4 is ρ represents the density of the material used in the metal wire 4. The output power of the shock wave generator is directly proportional to the resistance of the metal wire 4. Therefore, by changing the cross-sectional area of ​​the metal wire 4, its resistance can be adjusted, thereby regulating the output power of the shock wave generator.

[0039] In this embodiment, by increasing the wall thickness of the metal wire 4 and opening a groove 41 on the outer wall of the metal wire 4, the resistance value and mass of the metal wire 4 are kept within a set range, thereby keeping the output power of the shock wave generator within a set range.

[0040] It should be noted that by setting the groove 41, the metal wire 4 can have a thicker sidewall while maintaining the same mass, resistance and output power of the shock wave generator. This can further improve the axial structural strength of the metal wire 4 and ensure the output power of the shock wave generator.

[0041] In this embodiment, a groove 41 is formed on the outer wall of the metal wire 4. The length of the groove 41 is S and the cross-sectional area of ​​the groove 41 is n.

[0042] The resistance of metal wire 4 is R = R1 + R2.

[0043] Resistance of the metal wire 4 in the slotted section

[0044] Resistance of wire 4 without groove section

[0045] It should be noted that the mass of metal wire 4, M = M1 + M2, is the mass of metal wire 4 in the grooved section. The mass of the metal wire 4 without the groove section From the above formula, it can be concluded that the tubular metal wire 4 is easier to adjust the relationship between resistance and mass, thereby ensuring the axial structural strength of the metal wire 4 while adjusting the output power of the shock wave generator. This avoids the problem that when using filamentous metal wire 4, the structural strength is improved by increasing the diameter, which results in the inability to adjust the output power of the shock wave generator.

[0046] In this embodiment, a group of grooves 41 are evenly opened along the length of the metal wire 4, and each group of grooves 41 includes b grooves 41 evenly distributed on the outer wall of the metal wire 4.

[0047] Therefore, the resistance of the metal wire 4 in the slotted section

[0048] Resistance of wire 4 without groove section

[0049] It should be noted that during the processing of the metal wire 4, there are multiple grooves 41, and these multiple grooves 41 are evenly distributed on the sidewall of the metal wire 4. This processing method can make the metal wire 4 more uniform as a whole, thereby forming a uniform plasma channel and ensuring the effect of the shock wave operation.

[0050] In this embodiment, it will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within the present invention.

Claims

1. A shock wave generator, characterized in that: It includes an energy converter (1), a high-voltage electrode (2), a low-voltage electrode (3), and a metal wire (4); The energy converter (1) is provided with a window (11) for the shock wave to pass through. The high-voltage electrode (2) and the low-voltage electrode (3) are respectively provided on both sides of the window (11) inside the energy converter (1). The metal wire (4) is provided inside the window (11), and the two ends of the metal wire (4) are respectively connected to the high-voltage electrode (2) and the low-voltage electrode (3). The metal wire (4) has a tubular structure; the sidewall of the metal wire (4) is provided with a groove (41).

2. A method for adjusting the output power of a shock wave generator, characterized in that, The shock wave generator as described in claim 1 includes the following steps: A tubular metal wire (4) is used. The resistance R of the metal wire (4) is adjusted by changing the cross-sectional area of ​​the metal wire (4), thereby adjusting the output power of the shock wave generator. Resistance of metal wire (4) Where L is the length of the metal wire (4), r1 is the outer diameter of the metal wire (4), r2 is the inner diameter of the metal wire (4), and k is the resistivity of the material used for the metal wire (4).

3. The method for adjusting the output power of the shock wave generator according to claim 2, characterized in that: By increasing the wall thickness of the metal wire (4) and opening a groove (41) on the outer wall of the metal wire (4), the resistance value and mass of the metal wire (4) are kept within the set range, thereby keeping the output power of the shock wave generator within the set range.

4. The method for adjusting the output power of the shock wave generator according to claim 3, characterized in that: A groove (41) is formed on the outer wall of the metal wire (4), the length of the groove (41) is S, and the cross-sectional area of ​​the groove (41) is n; The resistance of the metal wire (4) is R = R1 + R2; Resistance of the metal wire (4) in the groove section Resistance of the metal wire (4) without the groove section 5. The method for adjusting the output power of the shock wave generator according to claim 4, characterized in that: A group of grooves (41) are evenly opened along the length of the metal wire (4), and each group of grooves (41) includes b grooves (41) evenly distributed on the outer wall of the metal wire (4); Therefore, the resistance of the metal wire (4) in the slotted section is... Resistance of the metal wire (4) without the groove section

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