Rock-breaking bit and rock-breaking drill

Abstract

A rock-breaking bit and a rock-breaking drilling rig, which relate to the technical field of drilling equipment. The rock-breaking bit includes a support and an electrode assembly. The electrode assembly is connected to the support. The electrode assembly includes a second annular electrode and a first annular electrode that are sleeved with each other and are located on the same side of the support. The voltage value applied to the second annular electrode is greater than the voltage value applied to the first annular electrode, and the second annular electrode and the first annular electrode are insulated from each other. The support is also provided with a liquid channel for supplying electrolyte. The rock-breaking bit and the rock-breaking drilling rig can improve the rock-breaking effect.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling equipment, and more particularly, to a rock-breaking bit and a rock-breaking drilling rig. Background Art

[0002] During the process of mineral exploration and development, it is required to carry out drilling work according to the stratigraphic horizons and depths designed by geology. Therefore, in order to visually study the underground structure and rock sedimentary environment and understand the fluid properties therein, etc., a coring tool is usually sent into the well to drill out rock samples for measuring various properties of the rocks.

[0003] Currently, the commonly used coring tool is a coring drilling rig. The coring drilling rig in the prior art usually drills and cores by the rotary drilling method. That is, by using the mechanical rotation of the drill bit to drill the rock, causing impact damage to the rock, so as to take out the broken rock for predicting the geological situation. However, in the existing mechanical rotary drilling method, the rock-breaking effect is not good, which affects the construction efficiency and prolongs the construction period. Summary of the Invention

[0004] The purpose of the present invention is to provide a rock-breaking bit and a rock-breaking drilling rig, which can improve the rock-breaking effect.

[0005] The embodiments of the present invention are implemented as follows:

[0006] On the one hand, the present invention provides a rock-breaking bit, which includes a support and an electrode assembly. The electrode assembly is connected to the support. The electrode assembly includes a second annular electrode and a first annular electrode that are sleeved with each other and located on the same side of the support. The voltage value applied to the second annular electrode is greater than the voltage value applied to the first annular electrode, and the second annular electrode and the first annular electrode are insulated from each other. The support is also provided with a liquid channel for supplying electrolyte. This rock-breaking bit and rock-breaking drilling rig can improve the rock-breaking effect.

[0007] Optionally, the second annular electrode is sleeved inside the first annular electrode.

[0008] Optionally, the second annular electrode and the first annular electrode are concentrically arranged.

[0009] Optionally, the support includes a first annular member, a second annular member, and an insulating member connected between the first annular member and the second annular member. The second annular member is sleeved inside the first annular member. The first annular electrode is connected to the first annular member, and the second annular electrode is connected to the second annular member.

[0010] Optionally, the second annular electrode includes a plurality of second electrodes, and the plurality of second electrodes are arranged in a ring on the support.

[0011] Optionally, the first annular electrode includes a plurality of first electrodes, and the plurality of first electrodes are arranged in a ring on the support. The voltage value applied to the second electrodes is greater than the voltage value applied to the first electrodes.

[0012] Optionally, the electrode assembly further includes a first extension member, and the first extension member extends from one end of the second annular electrode away from the support towards the first annular electrode.

[0013] Optionally, the electrode assembly further includes a second extension member, and the second extension member extends from one end of the first annular electrode away from the support towards the second annular electrode.

[0014] Optionally, the rock-breaking bit further includes a connecting member, and a connecting hole is provided on the support corresponding to the connecting member. The connecting member is used to connect to the drill pipe of the rock-breaking drill through the connecting hole.

[0015] On the other hand, the present invention provides a rock-breaking drill, which includes the above-mentioned rock-breaking bit. This rock-breaking drill can improve the rock-breaking effect.

[0016] The beneficial effects of the present invention include:

[0017] The present application provides a rock-breaking bit, which includes a support and an electrode assembly. The electrode assembly is connected to the support. The electrode assembly includes a second annular electrode and a first annular electrode that are sleeved with each other and located on the same side of the support. The voltage value applied to the second annular electrode is greater than the voltage value applied to the first annular electrode, and the second annular electrode and the first annular electrode are insulated from each other. A liquid channel for supplying electrolyte is also provided on the support. In this way, during use, the rock-breaking bit of the present application can be inserted into the hole groove that needs to be rock-broken, and then electrolyte is introduced into the hole groove through the liquid channel, so that the electrolyte fills the gap between the second annular electrode and the first annular electrode. The electrolyte at this gap dissociates and undergoes collision ionization to become a plasma state, thereby forming a plasma channel. Under the action of instantaneous high-temperature heating, the pressure in the plasma channel rises sharply, so that the plasma channel expands and breaks through the rock, causing the surrounding rock to fragment. The broken rock gravel is discharged under the pressure of the electrolyte through the gap between the rock-breaking bit and the hole groove and transported to the ground. In this way, the present application can further improve the rock-breaking effect, thereby improving the construction efficiency and shortening the construction period. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0019] Figure 1 One of the structural schematic diagrams of the rock-breaking bit provided by the embodiment of the present invention;

[0020] Figure 2 Another structural schematic diagram of the rock-breaking bit provided by the embodiment of the present invention;

[0021] Figure 3 The third structural schematic diagram of the rock-breaking bit provided by the embodiment of the present invention;

[0022] Figure 4 One of the installation diagrams of the first annular electrode group and the support provided by the embodiment of the present invention;

[0023] Figure 5 Another installation diagram of the first annular electrode group and the support provided by the embodiment of the present invention;

[0024] Figure 6 One of the installation diagrams of the second annular electrode group and the support provided by the embodiment of the present invention;

[0025] Figure 7 Another installation diagram of the second annular electrode group and the support provided by the embodiment of the present invention.

[0026] Icon: 10 - support; 11 - liquid channel; 12 - first annular member; 13 - second annular member; 14 - insulating member; 15 - connection hole; 21 - second annular electrode; 211 - second electrode; 22 - first annular electrode; 221 - first electrode; 30 - first extension member; 40 - second extension member. Detailed implementation manners

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0028] Accordingly, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0029] It should be noted that like reference numerals and letters denote like items in the following drawings. Therefore, once an item is defined in one drawing, it does not require further definition and explanation in subsequent drawings.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and should not be construed as indicating or implying relative importance.

[0031] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but may be slightly inclined.

[0032] In the description of the present invention, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Please refer to Figures 1 to 3 , this embodiment provides a rock-breaking bit, which includes a support 10 and an electrode assembly. The electrode assembly is connected to the support 10. The electrode assembly includes a second annular electrode 21 and a first annular electrode 22 that are sleeved with each other and located on the same side of the support 10, and the second annular electrode 21 and the first annular electrode 22 are insulated from each other. A liquid channel 11 for supplying electrolyte is further provided on the support 10.

[0034] It should be noted that the above-mentioned support 10 is for facilitating the fixation of the rock-breaking bit and the rock-breaking drill pipe, and at the same time for facilitating the fixation of the above-mentioned electrode assembly, so that the electrode assembly can be connected to the rock-breaking drill pipe through the support 10. Optionally, the above-mentioned support 10 can be made of insulating material.

[0035] The whole electrode assembly is connected to the support 10, and the electrode assembly includes a second annular electrode 21 and a first annular electrode 22 which are sleeved with each other, and the second annular electrode 21 and the first annular electrode 22 are respectively located on the same side of the support 10. It should be noted that the second annular electrode 21 and the first annular electrode 22 should be insulated from each other, so as to avoid electric discharge at the ends of the second annular electrode 21 and the first annular electrode 22 close to the support 10, thus affecting the normal tip discharge of the second annular electrode 21 and the first annular electrode 22.

[0036] Exemplarily, in order to achieve an insulated connection between the second annular electrode 21 and the first annular electrode 22. Optionally, in one embodiment, an insulating component can be provided between the second annular electrode 21 and the first annular electrode 22. In another embodiment, the support 10 made of insulating material can also be adopted.

[0037] In addition, it should be noted that in this embodiment, the voltage value of the second annular electrode 21 is greater than the voltage value of the first annular electrode 22, wherein the first annular electrode 22 is grounded. Optionally, high-voltage electricity is introduced into the second annular electrode 21, and low-voltage electricity is introduced into the first annular electrode 22. The specific introduction method is not limited in this application. For example, a high-voltage cable channel and a low-voltage cable channel can be correspondingly provided in the support 10, so as to supply high-voltage electricity to the second annular electrode 21 through the high-voltage cable and supply low-voltage electricity to the first annular electrode 22 through the low-voltage cable; or, the high-voltage cable can also be directly electrically connected to the second annular electrode 21, and the low-voltage cable can be directly electrically connected to the first annular electrode 22. This application does not limit the power-on method, as long as the second annular electrode 21 can be supplied with high-voltage electricity and the first annular electrode 22 can be supplied with low-voltage electricity.

[0038] Optionally, the voltage value of the second annular electrode 21 is greater than 60 KV, and the voltage value of the first annular electrode 22 is less than 60 KV; or, the voltage value of the second annular electrode 21 is greater than 100 KV, and the voltage value of the first annular electrode 22 is less than 100 KV. In this embodiment, it is preferably that the voltage value of the second annular electrode 21 is greater than 100 KV, and the voltage value of the first annular electrode 22 is less than 100 KV.

[0039] In addition, a liquid channel 11 is also formed on the support 10, and the liquid channel 11 is used for the electrolyte to pass through. The electrolyte is used to provide the electrolyte for the rock-breaking bit when the rock-breaking bit works, so as to prevent the second annular electrode 21 and the first annular electrode 22 from breaking down the air and thus unable to form a plasma channel in the rock. At the same time, the broken rock is discharged by relying on the water pressure of the electrolyte.

[0040] In summary, the present application provides a rock-breaking bit, which includes a support 10 and an electrode assembly. The electrode assembly is connected to the support 10. The electrode assembly includes a second annular electrode 21 and a first annular electrode 22 that are sleeved with each other and located on the same side of the support 10. The voltage value applied to the second annular electrode 21 is greater than the voltage value applied to the first annular electrode 22, and the second annular electrode 21 and the first annular electrode 22 are insulated from each other. A liquid channel 11 for supplying the electrolyte is also provided on the support 10. In this way, when in use, the rock-breaking bit of the present application can be inserted into the hole groove where rock breaking is required, and then the electrolyte is introduced into the hole groove through the liquid channel 11, so that the electrolyte fills the gap between the second annular electrode 21 and the first annular electrode 22. The electrolyte at this gap dissociates and undergoes collision ionization to become a plasma state, thereby forming a plasma channel. Under the action of instantaneous high-temperature heating, the pressure in the plasma channel rises sharply, so that the plasma channel expands and breaks through the rock, causing the surrounding rock to break. The broken rock gravel is discharged under the pressure of the electrolyte through the gap between the rock-breaking bit and the hole groove and transported to the ground. In this way, the present application can further improve the rock-breaking effect, thereby improving the construction efficiency and shortening the construction period.

[0041] Optionally, in order to prevent dangers such as high-voltage electricity from hurting people, in this embodiment, the second annular electrode 21 is sleeved inside the first annular electrode 22. Of course, the second annular electrode 21 being sleeved inside the first annular electrode 22 is not a limitation to the present application. Under the condition of ensuring safe operation, the first annular electrode 22 can also be sleeved inside the second annular electrode 21.

[0042] To further improve the rock-breaking effect, in this embodiment, the second annular electrode 21 and the first annular electrode 22 are concentrically arranged.

[0043] In addition, by way of example, in this embodiment, the support 10 includes a first annular member 12, a second annular member 13, and an insulating member 14 connected between the first annular member 12 and the second annular member 13. The second annular member 13 is sleeved inside the first annular member 12. The first annular electrode 22 is connected to the first annular member 12, and the second annular electrode 21 is connected to the second annular member 13. In this way, the first annular member 12 and the second annular member 13 can be insulated under the action of the insulating member 14. By way of example, the insulating member 14 can be an annular insulating member 14.

[0044] It should be noted that when the first annular electrode 22 is connected to the first annular member 12 and the second annular electrode 21 is connected to the second annular member 13, correspondingly, the high-voltage cable can be passed through the second annular member 13, and the low-voltage cable can be passed through the first annular member 12.

[0045] Please refer to Figure 6 and Figure 7 For example, in this embodiment, the second annular electrode 21 can be an annular electrode. Or, the second annular electrode 21 includes a plurality of second electrodes 211, and the plurality of second electrodes 211 are arranged in a ring on the support 10. In this case, the plurality of second electrodes 211 together form the second annular electrode 21.

[0046] Please refer to Figure 4 and Figure 5 For example, in this embodiment, the first annular electrode 22 can be an annular electrode. Or, the first annular electrode 22 includes a plurality of first electrodes 221, and the plurality of first electrodes 221 are arranged in a ring on the support 10, and the voltage value applied to the second electrode 211 is greater than the voltage value applied to the first electrode 221.

[0047] Of course, the first annular electrode 22 can also include an annular seat, and the plurality of first electrodes 221 are evenly distributed on the annular seat, so that the plurality of first electrodes 221 are detachably connected to the support 10 through the annular seat. Similarly, the second annular electrode 21 can also be provided with an annular seat, so that the plurality of second electrodes 211 are detachably connected to the support 10 through the annular seat, thereby realizing the convenience of disassembly.

[0048] Optionally, in this embodiment, the number of the second electrodes 211 and the first electrodes 221 is the same and they are arranged in an alternating manner.

[0049] In addition, in this embodiment, the above-mentioned first electrode 221 can be integrally formed with the first annular member 12, or can be welded or detachably connected to the first annular member 12; the second electrode 211 can be integrally formed with the second annular member 13, or can be welded or detachably connected to the second annular member 13. In this embodiment, for the convenience of disassembly, the detachable connection method can be selected for fixation.

[0050] Furthermore, for the convenience of rock fragmentation, the lengths of the first electrode 221 and the second electrode 211 should be determined according to the depth of the hole groove to prevent incomplete rock fragmentation.

[0051] In this embodiment, in order to make the rock fragmentation effect better, optionally, the electrode assembly further includes a first extension member 30, and the first extension member 30 extends from one end of the second annular electrode 21 away from the support 10 towards the first annular electrode 22.

[0052] In order to further improve the rock-breaking effect, optionally, the electrode assembly further includes a second extension member 40, and the second extension member 40 extends from the end of the first annular electrode 22 away from the support 10 towards the second annular electrode 21.

[0053] Optionally, the rock-breaking bit further includes a connecting member. A connecting hole 15 is provided on the support 10 corresponding to the connecting member, and the connecting member is used to connect with the drill pipe of the rock-breaking drill through the connecting hole 15, so as to realize the detachable connection between the rock-breaking bit and the rock-breaking drill pipe.

[0054] This embodiment also provides a rock-breaking drill, which includes the above-mentioned rock-breaking bit, and this rock-breaking drill can improve the rock-breaking effect. Since the structure and its beneficial effects of the above-mentioned rock-breaking bit have been described in detail above, they will not be elaborated here again.

[0055] The above are only optional embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0056] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without conflict. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

Claims

1. A rock-breaking bit, characterized in that, It includes a support and an electrode assembly. The electrode assembly is connected to the support. The electrode assembly includes a second annular electrode and a first annular electrode that are sleeved with each other and located on the same side of the support. The voltage value applied to the second annular electrode is greater than the voltage value applied to the first annular electrode, and the second annular electrode and the first annular electrode are insulated and connected. A liquid channel for supplying electrolyte is also provided on the support; The second annular electrode is sleeved inside the first annular electrode; The support includes a first annular member, a second annular member, and an insulating member connected between the first annular member and the second annular member. The second annular member is sleeved inside the first annular member. The first annular electrode is connected to the first annular member, and the second annular electrode is connected to the second annular member; The electrode assembly further includes a first extension member, and the first extension member extends from the end of the second annular electrode away from the support towards the first annular electrode; The voltage value of the second annular electrode is greater than the voltage value of the first annular electrode. Among them, the first annular electrode is grounded.

2. The rock-breaking bit according to claim 1, characterized in that, The second annular electrode and the first annular electrode are concentrically arranged.

3. The rock-breaking bit according to claim 1, wherein, The second annular electrode includes a plurality of second electrodes, and the plurality of second electrodes are arranged in a ring on the support.

4. The rock-breaking bit according to claim 3, characterized in that, The first annular electrode includes a plurality of first electrodes, and the plurality of first electrodes are arranged in a ring on the support. The voltage value applied to the second electrode is greater than the voltage value applied to the first electrode.

5. The rock-breaking bit according to claim 1, wherein, The electrode assembly further includes a second extension member, and the second extension member extends from the end of the first annular electrode away from the support towards the second annular electrode; 6. The rock-breaking bit according to claim 1, characterized in that, The rock-breaking bit further includes a connecting member. A connecting hole is provided on the support corresponding to the connecting member, and the connecting member is used to connect to the drill pipe of the rock-breaking rig through the connecting hole.

7. A rock-breaking drill, characterized in that, It includes the rock-breaking bit according to any one of claims 1 to 6.

Images