Pulse drilling apparatus

Abstract

Disclosed is a pulse drilling device, including: a plurality of drill rods (100), a plurality of drill bits, a plurality of energy storage capacitors (300) and a plurality of discharge switches (400). Each of the drill rods is correspondingly connected to the energy storage capacitor, the energy storage capacitor is configured to charge the drill rod connected to the energy storage capacitor, the drill bit is connected to the drill rod, the discharge switch is connected to the drill rod to control the drill rod to discharge to the drill bit to break rocks, and the plurality of the drill rods are configured to continuously and alternately charge and discharge. The discharge switch can control the charging state of each of the drill rods correspondingly. When one of the drill rods is in the discharging state, the other drill rods are in the charging state. The drill rod in the discharging state switches to the charging state after the electric energy is exhausted, and at the same time, the drill rod in the fully charged state is continuously discharged. As a result, the plurality of drill rods can be continuously charged and discharged alternately, thereby greatly improving the drilling efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of drilling equipment, and in particular to a pulse drilling device.BACKGROUND

[0002] Breaking the ore by the pulse discharge is a new breaking technology developed in the past few decades, which uses the mechanical effects of shock waves, jets or plasma channels generated by the pulse discharge to break ores. There are no flying stones or harmful substances during the breaking process, and the discharge process is easy to control.

[0003] However, the pulse drilling devices currently used are all in the form of single charge and discharge, and cannot truly realize the function of continuous discharge drilling, thus the efficiency of drilling and breaking is relatively low.

[0004] US20180120437A1 discloses a horizontal tunneling device, comprising: a tunneling device main body, which includes a front shield cylinder. The front shield cylinder is equipped with a front partition plate and a rear partition plate; at least one electric pulse drill bit that uses mechanical effects such as shockwaves, jets, or plasma channels generated by pulsed discharge to break rocks. All electric pulse drill bits are fixed on the front and rear partition plates; and an electric pulse generator connected to the electric pulse drill bits to provide high-voltage electric pulses for them.

[0005] US 8616302 B2 provides for pulsed powered drilling apparatuses and methods. A drilling apparatus is provided comprising a bit having one or more sets of electrodes through which a pulsed voltage is passed through a mineral substrate to create a crushing or drilling action. The electro-crushing drilling process may have, but does not require, rotation of the bit. The electro-crushing drilling process is capable of excavating the hole out beyond the edges of the bit with or without the need of mechanical teeth.SUMMARY

[0006] The present application provides a pulse drilling device, aiming to solve the problem in the related art that the pulse drilling device cannot continuously charge and discharge and has low drilling efficiency, so as to realize the continuous charging and discharging of the pulse drilling device and improve the drilling efficiency.

[0007] The pulse drilling device provided by the present application includes: a plurality of drill rods, a plurality of drill bits, a plurality of energy storage capacitors and a plurality of discharge switches; each of the drill rods is correspondingly connected to the energy storage capacitor, the energy storage capacitor is configured to charge the drill rod connected to the energy storage capacitor, the drill bit is connected to the drill rod, the discharge switch is connected to the drill rod to control the drill rod to discharge to the drill bit to break rocks, and the plurality of the drill rods are configured to continuously and alternately charge and discharge.

[0008] In an embodiment, the drill bit includes an integrated drill bit, and each of the drill rods is connected to the integrated drill bit.

[0009] In an embodiment, the drill bit includes a plurality of split drill bits, and each of the drill rods is connected to one of the split drill bits.

[0010] In an embodiment, the drill bit is detachably connected to the drill rod through a drill bit connector.

[0011] In an embodiment, each of the drill rods is equipped with the discharge switch to control a working state of each of the drill rods.

[0012] In an embodiment, the pulse drilling device further includes a control unit electrically connected to each of the discharge switches to control a working state of each of the discharge switches to control a discharge time and a discharge sequence of each of the drill rods.

[0013] In an embodiment, an insulating layer is provided between a low-voltage end and a high-voltage end at a connecting port of the drill rod and the drill bit connector.

[0014] In an embodiment, each of the drill rods is connected to at least one of the energy storage capacitors, and each of the energy storage capacitors is connected to a high-voltage power supply electrically connected to the control unit.

[0015] In an embodiment, the pulse drilling device further includes a casing, and the plurality of the energy storage capacitors and the plurality of the drill rods are installed in the casing.

[0016] In an embodiment, a slag discharge channel is provided in the casing, and the plurality of drill rods are provided in an annular array inside of the casing with a center point of the slag discharge channel as a center point of the annular array.

[0017] In the pulse drilling device provided by this application, each of the drill rods is correspondingly connected to the energy storage capacitor, and the energy storage capacitor can charge the connected drill rod. The drill bit is connected to the drill rod, and the discharge switch is connected to the drill rod to control the drill rod to discharge to the drill bit and break the rock, and a plurality of drill rods can continuously alternate charge and discharge.

[0018] Compared with the related art, the pulse drilling device is provided with a plurality of drill rods, and each of the drill rods is correspondingly connected to the energy storage capacitor. The discharge switch can control the charging state of each of the drill rods correspondingly. When one of the drill rods is in the discharging state, the other drill rods are in the charging state. The drill rod in the discharging state switches to the charging state after the electric energy is exhausted, and at the same time, the drill rod in the fully charged state is continuously discharged. As a result, the plurality of drill rods can be continuously charged and discharged alternately, thereby greatly improving the drilling efficiency.BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to illustrate the technical solutions in the embodiments of the present application or in the related art more clearly, the following briefly introduces the accompanying drawings required for the description of the embodiments or the related art. Obviously, the drawings in the following description are only part of embodiments of the present application. For those skilled in the art, other drawings can also be obtained according to the structures shown in these drawings without any creative effort. FIG. 1 is a schematic structural view of a pulse drilling device according to the present application. FIG. 2 is a schematic structural view of a pulse drilling device equipped with an integrated drill bit according to the present application. FIG. 3 is a schematic view of a working state of the pulse drilling device equipped with the integrated drill bit. FIG. 4 is a schematic structural view of a pulse drilling device equipped with a split drill bit according to the present application. FIG. 5 is a schematic view of a working state of the pulse drilling device equipped with the split drill bit. Reference signs:

[0020] 100: drill rod; 101: first drill rod; 102: second drill rod; 103: third drill rod; 104: fourth drill rod; 201: integrated drill bit; 202: split drill bit; 300: energy storage capacitor; 400: discharge switch; 500: drill bit connector; 600: casing; 700: slag discharge channel. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The embodiments of the present application will be further described in detail below with the accompanying drawings and examples. The following examples are used to illustrate the present application but cannot be used to limit the scope of the present application. The scope of the invention is defined in the appended claims.

[0022] In the description of the embodiments of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience to describe the embodiments of the present application and to simplify the description, but 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 therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

[0023] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly stipulated and limited, the terms "connection" and "connected" should be understood in a broad sense. For example, it can be a fixed connection or a removable connection, a detachable connection or an integrated connection, a mechanical connection or an electrical connection, and a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present application can be understood in specific situations.

[0024] In the embodiments of the present application, unless otherwise clearly stated and limited, the first feature "on" or "below" the second feature may be that the first feature is directly connected to the second feature, or the first feature is indirectly connected to the second feature through an intermediate medium. Furthermore, the first feature "above" or "beneath" the second feature may be that the first feature is directly above or diagonally above the second feature or the first feature is directly beneath or diagonally beneath the second feature, or simply means that the first feature is higher in level than the second feature or the first feature is lower in level than the second feature.

[0025] A pulse drilling device according to an embodiment of the present application will be described below with reference to FIG. 1 to FIG. 5. It should be understood that the following descriptions are only illustrative embodiments of the present application and do not constitute any special limitations to the present application.

[0026] In an embodiment, the present application provides a pulse drilling device, as shown in FIG. 1, FIG. 2 and FIG. 4. The pulse drilling device includes: a plurality of drill rods 100, a plurality of drill bits, a plurality of energy storage capacitors 300 and a plurality of discharge switches 400.

[0027] Each of the drill rods 100 is correspondingly connected with the energy storage capacitor 300. The energy storage capacitor 300 can charge the drill rod 100 connected thereto. The drill bit is connected to the drill rod 100, and the discharge switch 400 is connected to the drill rod 100 to control the drill rod 100 to discharge to the drill bit and break the rock. Moreover, the plurality of drill rods can be charged and discharged continuously and alternately.

[0028] Compared with the related art, the pulse drilling device is provided with the plurality of drill rods 100, and each of the drill rods 100 is correspondingly connected with the energy storage capacitor 300. The discharge switch 400 can control a charging state of each of the drill rods 100 correspondingly. When one of the drill rods 100 is in a discharging state, the other drill rods 100 are in a charging state. The drill rod 100 in the discharging state switches to the charging state after an electric energy is exhausted, and at the same time, the drill rod 100 in the fully charged state is continuously discharged. As a result, the plurality of drill rods 100 can be charged and discharged continuously and alternately, thereby greatly improving a drilling efficiency.

[0029] In an embodiment, as shown in FIG. 1, the drill rod 100 includes a first drill rod 101, a second drill rod 102, a third drill rod 103 and a fourth drill rod 104. The first drill rod 101, the second drill rod 102, the third drill rod 103 and the fourth drill rod 104 are all correspondingly connected with the energy storage capacitors 300. Assuming that the discharge switch 400 firstly controls the first drill rod 101 to discharge to the drill bit to break the rock, then the second drill rod 102, the third drill rod 103 and the fourth drill rod 104 are all in the charging state. When the electric energy of the first drill rod 101 is exhausted, the discharge switch 400 can control any one of the second drill rod 102, the third drill rod 103 and the fourth drill rod 104 to discharge to the drill bit to break the rock. At the same time, the energy storage capacitor 300 charges the first drill rod 101. According to this regular cycle, the first drill rod 101, the second drill rod 102, the third drill rod 103 and the fourth drill rod 104 can realize continuous and alternate charging and discharging, thereby greatly improving the drilling efficiency.

[0030] It should be noted that the above embodiment is only an illustrative embodiment of the present application and does not constitute any limitation on the present application. The number of drill rods 100 can be determined according to actual needs.

[0031] In an embodiment, the drill bit includes an integrated drill bit 201, and each of the drill rods 100 is connected to the integrated drill bit 201.

[0032] As shown in FIG. 2 and FIG. 3, the pulse drilling device includes the integrated drill bit 201. The plurality of drill rods 100 are connected to the integrated drill bit 201. Any drill rod 100 can be discharged to the integrated drill bit 201 to break rocks. The pulse drilling device equipped with the integrated drill bit 201 can realize continuous drilling work under a same energy condition as small diameters.

[0033] In an embodiment, the drill bit includes a plurality of split drill bits 202, and each of the drill rods 100 is connected with the split drill bit 202.

[0034] As shown in FIG. 4 and FIG. 5, the pulse drilling device includes the plurality of split drill bits 202. A number of the split drill bits 202 is equal to a number of the drill rods 100. That is, each of the drill rods 100 is connected with the split drill bit 202. Each of the drill rods 100 can discharge to the corresponding split drill bit 202 connected thereto to break rocks. The pulse drilling device equipped with the split drill bit 202 can realize continuous drilling work with small energy and large diameter.

[0035] In an embodiment, the drill bit is detachably connected to the drill rod 100 through a drill bit connector 500.

[0036] According to the above-described embodiments, it can be seen that by changing a type of the drill bit, the pulse drilling device can be suitable for continuous drilling work under different working conditions, which greatly improves the flexibility and versatility of the pulse drilling device.

[0037] Each of the drill rods 100 is provided with the discharge switch 400 to control the working status of each of the drill rods 100.

[0038] The first drill rod 101 is connected with a first discharge switch. The second drill rod 102 is connected with a second discharge switch. The third drill rod 103 is connected with a third discharge switch. The fourth drill rod 104 is connected with a fourth discharge switch. When the first drill rod 101 is required to discharge, the first discharge switch is in a conductive state, and the first drill rod 101 discharges to the drill bit to break the rock. At this time, the second discharge switch, the third discharge switch and the fourth discharge switch are all in an off state, and the second drill rod 102, the third drill rod 103 and the fourth drill rod 104 are all in the charging state. When the electric energy of the first drill rod 101 is exhausted, the first discharge switch, the third discharge switch and the fourth discharge switch are in the off state, the second discharge switch is in the on state, and the second drill rod 102 is discharged to the drill bit to breaking rocks, and the rest of the drill rods are in the charging state.

[0039] In an embodiment, an insulating layer is provided between a low-voltage end and a high-voltage end at a connecting port of the drill rod 100 and the drill bit connector 500. The insulation layer is configured to isolate a connection among the high-voltage electrode drill bit, the low-voltage electrode drill bit and the casing to prevent a leakage of electrical energy and safety problems.

[0040] In an embodiment, the pulse drilling device further includes a control unit electrically connected to each of the discharge switches 400 to control a discharge time and a discharge sequence of each of the drill rods 100 by controlling the working state of each of the discharge switches 400.

[0041] Further, in an embodiment, at least one energy storage capacitor 300 is connected to each of the drill rods 100. Each of the energy storage capacitors 300 is connected to a high-voltage power supply. The high-voltage power supply is electrically connected to the control unit. With reference to the above embodiment, the pulse drilling device further includes the control unit. The control unit is electrically connected to the first discharge switch, the second discharge switch, the third discharge switch and the fourth discharge switch. Each of the drill rods 100 can be equipped with a plurality of energy storage capacitors 300, and each of the energy storage capacitors 300 is connected to the high-voltage power supply. The high-voltage power supply can convert a conventional 220V commercial power or a 380V industrial power into a high-voltage direct current, and transfer it to the energy storage capacitor 300 to charge the first drill rod 101, the second drill rod 102, the third drill rod 103 and the fourth drill rod 104. The control system can control the high-voltage power supply to charge the energy storage capacitors 300 corresponding to the first drill rod 101, the second drill rod 102, the third drill rod 103 and the fourth drill rod 104.

[0042] At the same time, the control system can also set a certain discharge time and a certain discharge sequence. For example, the control system may set the discharge sequence to be the first drill rod 101, the second drill rod 102, the third drill rod 103 and the fourth drill rod 104. The discharge time of each of the drill rods 100 is 30 minutes.

[0043] At the beginning, the control system controls the first discharge switch to be in the on state, and the second discharge switch, the third discharge switch and the fourth discharge switch to be in the off state. At this time, the first drill rod 101 is discharged to the drill bit to break. At the same time, the control system controls the high-voltage power supply to charge the second drill rod 102, the third drill rod 103 and the fourth drill rod 104. After the first drill rod 101 is discharged for 30 minutes, the control system controls the first discharge switch, the third discharge switch and the fourth discharge switch to be in the off state, and the second discharge switch is in the on state. At this time, the second drill rod 102 is discharged to the drill bit to break. At the same time, the control system controls the high-voltage power supply to charge the first drill rod 101, the third drill rod 103 and the fourth drill rod 104. After the second drill rod 102 is discharged for 30 minutes, the first discharge switch, the second discharge switch and the fourth discharge switch are in the off state, and the third discharge switch is in the on state. At this time, the third drill rod 103 is discharged to the drill bit to break. At the same time, the control system controls the high-voltage power supply to charge the first drill rod 101, the second drill rod 102 and the fourth drill rod 104. After the third drill rod 103 is discharged for 30 minutes, the first discharge switch, the second discharge switch and the third discharge switch are in the off state, and the fourth discharge switch is in the on state. At this time, the fourth drill rod 104 is discharged to the drill bit to break. At the same time, the control system controls the high-voltage power supply to charge the first drill rod 101, the second drill rod 102 and the third drill rod 103. According to this rule, a next cycle of the continuous charging and discharging work is carried out.

[0044] It should be understood here that at least one energy storage capacitor 300 is connected to each of the drill rods 100. The energy storage capacitor 300 connected to each of the drill rods 100 can be adjusted according to actual needs. All energy storage capacitors can be connected to the same high-voltage power supply.

[0045] In an embodiment, the pulse drilling device further includes a casing 600. Each of the energy storage capacitors 300 and each of the drill rods 100 are installed in the casing 600.

[0046] Furthermore, in an embodiment, as shown in FIG. 1 to FIG. 5, a slag discharge channel 700 is provided in the casing 600. The plurality of drill rods 100 are provided in an annular array inside the casing 600 with a center point of the slag discharge channel 700 as a center point of the annular array.

[0047] As shown in FIG. 1, the slag discharge channel 700 is located at a center of the plurality of drill rods 100, which is configured to suppress a mud and flush out the slag from broken rocks to discharge the slag in a positive circulation. Or the broken slag can be sucked out from the slag discharge channel 700 to discharge the slag in a reverse circulation.

[0048] According to the above-described embodiments, it can be seen that the pulse drilling device has a simple and compact structure and is easy to operate. Compared with traditional mechanical breaking methods, its breaking efficiency is greatly improved and the working cost is lower. At the same time, the device can be applied to drilling work under different working conditions and has the high flexibility and versatility. In addition, compared with the existing pulse drilling device, this device can truly realize continuous charging and continuous discharge, thereby achieving continuous drilling work, and the drilling work efficiency is greatly improved.

[0049] The scope of protection is provided by the appended claims.

Claims

1. A pulse drilling device, comprising: a plurality of drill rods (100), a plurality of drill bits, a plurality of energy storage capacitors (300) and a plurality of discharge switches (400), wherein the drill rods (100), the drill bits, and the discharge switches (400) are in equal numbers; wherein each of the drill rods (100) is correspondingly connected to each energy storage capacitor (300), and each energy storage capacitor (300) is configured to charge the drill bit of the drill rod (100) connected to the energy storage capacitor (300); wherein, in response to that one of the drill bits is in a discharging state, other drill bits are in a charging state, the drill bit in the discharging state is configured to switch to the charging state after an electric energy is exhausted, and the drill bit in a fully charged state is continuously discharged; and in the discharging state, the discharge switch (400) is configured to control the drill bit to break rocks, and in the charging state, the drill bit is stopped breaking the rocks.

2. The pulse drilling device according to claim 1, wherein the drill bit comprises an integrated drill bit (201), and each of the drill rods (100) is connected to the integrated drill bit (201).

3. The pulse drilling device according to claim 1, wherein the drill bit comprises a plurality of split drill bits (202), and each of the drill rods (100) is connected to one of the split drill bits (202).

4. The pulse drilling device according to claim 2 or 3, wherein the drill bit is detachably connected to the drill rod (100) through a drill bit connector (500).

5. The pulse drilling device according to claim 1, wherein each of the drill rods (100) is equipped with the discharge switch (400) to control a working state of each of the drill rods (100).

6. The pulse drilling device according to claim 5, wherein the pulse drilling device further comprises a control unit electrically connected to each of the discharge switches (400) to control a working state of each of the discharge switches (400) to control a discharge time and a discharge sequence of each of the drill rods (100).

7. The pulse drilling device according to claim 4, wherein an insulating layer is provided between a low-voltage end and a high-voltage end at a connecting port of the drill rod (100) and the drill bit connector (500).

8. The pulse drilling device according to claim 6, wherein each of the drill rods (100) is connected to at least one of the energy storage capacitors (300), and each of the energy storage capacitors (300) is connected to a high-voltage power supply electrically connected to the control unit.

9. The pulse drilling device according to claim 8, further comprising a casing (600), wherein the plurality of the energy storage capacitors (300) and the plurality of the drill rods (100) are installed in the casing (600).

10. The pulse drilling device according to claim 9, wherein a slag discharge channel (700) is provided in the casing (600), and the plurality of drill rods (100) are provided in an annular array inside of the casing (600) with a center point of the slag discharge channel (700) as a center point of the annular array.

Images