CN107524644A - Down-the-hole drill propelling pressure self-adaptive hydraulic control loop - Google Patents
Down-the-hole drill propelling pressure self-adaptive hydraulic control loop Download PDFInfo
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- 230000003044 adaptive effect Effects 0.000 claims abstract description 36
- 238000013016 damping Methods 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims 2
- 239000012530 fluid Substances 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 33
- 230000007423 decrease Effects 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000005755 formation reaction Methods 0.000 description 6
- 239000011435 rock Substances 0.000 description 6
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/02—Fluid rotary type drives
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
- F15B2211/50554—Pressure control characterised by the type of pressure control means the pressure control means controlling a pressure downstream of the pressure control means, e.g. pressure reducing valve
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- Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
本发明公开了一种潜孔钻机推进压力自适应液压控制回路，包括推进油缸和回转马达，推进油缸的有杆腔上连接设有第一油路、无杆腔上连接设有第二油路；回转马达的两个油口上分别连接设有第三油路和第四油路；还包括控制回路，控制回路包括第一控制油路和第二控制油路；第一控制油路上设有压力自适应控制阀，压力自适应控制阀的出油端与单向先导式减压阀的控制油口相连，压力自适应控制阀的进油端与第一油路相连；第二控制油路上设有梭阀，梭阀的出油口与第一溢流阀的控制油口相连；压力自适应控制阀的一端设有第一控制油口、另一端设有第二控制油口和弹簧，第一控制油口与第二控制油路相连，第二控制油口与压力自适应控制阀的进油端相连。
The invention discloses an adaptive hydraulic control circuit for propulsion pressure of a down-the-hole drilling rig, which comprises a propulsion oil cylinder and a rotary motor. ; The two oil ports of the rotary motor are respectively connected with the third oil circuit and the fourth oil circuit; it also includes a control circuit, the control circuit includes the first control oil circuit and the second control oil circuit; the first control oil circuit is provided with a pressure Adaptive control valve, the oil outlet end of the pressure adaptive control valve is connected with the control oil port of the one-way pilot pressure reducing valve, the oil inlet end of the pressure adaptive control valve is connected with the first oil circuit; the second control oil circuit is set There is a shuttle valve, the oil outlet of the shuttle valve is connected with the control oil port of the first relief valve; one end of the pressure adaptive control valve is provided with the first control oil port, the other end is provided with the second control oil port and spring, the second A control oil port is connected with the second control oil circuit, and the second control oil port is connected with the oil inlet end of the pressure adaptive control valve.
Description
技术领域technical field
本发明属于液压系统技术领域，具体的为一种潜孔钻机推进压力自适应液压控制回路。The invention belongs to the technical field of hydraulic systems, in particular to an adaptive hydraulic control circuit for propulsion pressure of a down-the-hole drilling rig.
背景技术Background technique
潜孔钻机是一种高效率的钻孔设备，市场上高端产品基本上被国外产品所垄断，国内厂家以中低端产品为主，其中，低端产品出货量最大。目前，低端产品基本上不带控制器，采用人工手动控制，只能实现最基本的功能。潜孔钻机在钻孔时钻头深入地下，随着钻孔深度的增加，岩层的结构会发生变化，钻杆增长其自重也会增加，推进压力如果不变，钻头与岩层间的阻力增大，当阻力超过马达扭矩时，将出现卡钻的现象，卡钻将极大的影响钻孔效率和设备使用寿命。当岩层较硬时，为提高钻进效率需要操作人员手动调高推进压力，对操作人员的技能要求比较高。The down-the-hole drilling rig is a kind of high-efficiency drilling equipment. The high-end products in the market are basically monopolized by foreign products. Domestic manufacturers mainly focus on low-end products, among which low-end products have the largest shipments. At present, low-end products basically do not have controllers, and manual control is used, which can only realize the most basic functions. When the down-the-hole drilling rig is drilling, the drill bit goes deep into the ground. As the drilling depth increases, the structure of the rock formation will change, and the weight of the drill pipe will also increase. If the propulsion pressure remains unchanged, the resistance between the drill bit and the rock formation will increase. When the resistance exceeds the torque of the motor, the phenomenon of drill sticking will occur, which will greatly affect the drilling efficiency and the service life of the equipment. When the rock formation is relatively hard, in order to improve the drilling efficiency, the operator needs to manually increase the propulsion pressure, which requires relatively high skill requirements for the operator.
发明内容Contents of the invention
有鉴于此，本发明的目的在于提供一种潜孔钻机推进压力自适应液压控制回路，能够依靠液压控制实现推进压力与回转压力、钻杆重量相适应，提高设备钻孔的效率和适应能力，自动预防卡钻，降低工人操作强度。In view of this, the object of the present invention is to provide an adaptive hydraulic control circuit for propulsion pressure of down-the-hole drilling rig, which can realize the adaptability of propulsion pressure, rotary pressure and drill pipe weight by hydraulic control, and improve the efficiency and adaptability of equipment drilling. Automatically prevent drill sticking and reduce the operating intensity of workers.
为达到上述目的，本发明提供如下技术方案：To achieve the above object, the present invention provides the following technical solutions:
一种潜孔钻机推进压力自适应液压控制回路，包括推进油缸和回转马达，所述推进油缸的有杆腔上连接设有第一油路、无杆腔上连接设有第二油路，所述第一油路和第二油路上连接设有第一多路阀；所述回转马达的两个油口上分别连接设有第三油路和第四油路，所述第三油路和第四油路上连接设有第二多路阀；所述第一多路阀和第二多路阀的进油口分别与油源相连；A propulsion pressure self-adaptive hydraulic control circuit of a down-the-hole drilling rig, comprising a propulsion cylinder and a rotary motor, a first oil circuit is connected to the rod chamber of the propulsion cylinder, and a second oil circuit is connected to the rodless chamber, so that The first oil passage and the second oil passage are connected with a first multi-way valve; the two oil ports of the rotary motor are respectively connected with a third oil passage and a fourth oil passage, and the third oil passage and the first oil passage are respectively connected. The fourth oil circuit is connected with a second multi-way valve; the oil inlets of the first multi-way valve and the second multi-way valve are respectively connected with the oil source;
所述第一油路和第二油路之间设有第一溢流阀，且所述第一油路上设有单向先导式减压阀；所述第三油路和第四油路之间设有第二溢流阀；A first relief valve is provided between the first oil circuit and the second oil circuit, and a one-way pilot pressure reducing valve is provided on the first oil circuit; between the third oil circuit and the fourth oil circuit There is a second relief valve between them;
还包括控制回路，所述控制回路包括第一控制油路和设置在所述第一油路和第四油路之间的第二控制油路；A control circuit is also included, the control circuit includes a first control oil circuit and a second control oil circuit arranged between the first oil circuit and the fourth oil circuit;
所述第一控制油路上设有压力自适应控制阀，所述压力自适应控制阀的出油端与所述单向先导式减压阀的控制油口相连，所述压力自适应控制阀的进油端与所述第一油路相连；A pressure adaptive control valve is provided on the first control oil circuit, the oil outlet of the pressure adaptive control valve is connected to the control oil port of the one-way pilot pressure reducing valve, and the pressure adaptive control valve The oil inlet end is connected with the first oil passage;
所述第二控制油路上设有梭阀，所述梭阀的出油口与所述第一溢流阀的控制油口相连；A shuttle valve is provided on the second control oil circuit, and the oil outlet of the shuttle valve is connected with the control oil port of the first relief valve;
所述压力自适应控制阀的一端设有第一控制油口、另一端设有第二控制油口和弹簧，控制油口设置有阻尼孔，所述第一控制油口与所述第二控制油路相连，所述第二控制油口与所述压力自适应控制阀的进油端相连。One end of the pressure adaptive control valve is provided with a first control port, the other end is provided with a second control port and a spring, the control port is provided with a damping hole, and the first control port is connected to the second control port. The oil circuit is connected, and the second control oil port is connected with the oil inlet end of the pressure adaptive control valve.
进一步，所述单向先导式减压阀与所述推进油缸之间设有液控式单向阀，所述液控式单向阀的控制口与所述第二油路相连。Further, a hydraulic control check valve is provided between the one-way pilot pressure reducing valve and the propulsion cylinder, and the control port of the hydraulic control check valve is connected to the second oil circuit.
进一步，所述压力自适应控制阀的进油端还与其串联设有直动式减压阀。Further, the oil inlet end of the pressure adaptive control valve is also provided with a direct acting pressure reducing valve in series.
进一步，所述梭阀与所述第四油路之间设有压力继电器。Further, a pressure relay is provided between the shuttle valve and the fourth oil circuit.
进一步，所述第一油路与所述第四油路之间串联设有节流阀和单向阀。Further, a throttle valve and a check valve are arranged in series between the first oil passage and the fourth oil passage.
本发明的潜孔钻机推进压力自适应液压控制回路的原理为：钻孔时遇到岩层变软，推进深度增加，此时，回转阻力增加，回转压力上升，压力自适应控制阀左侧控制压力上升，推动阀芯向右运动，先导减压阀的控制口压力油压力下降，阀芯开口减小，推进压力降低，推进深度减小，阻力减小，回转压力恢复正常；当回转压力或推进压力无法自调超过溢流阀调定压力时，第一、第二油路间的溢流阀工作，推进进入浮动状态，向操作人员发送信号；钻孔遇到岩层变硬时，推进深度减小，回转阻力降低，钻进效率不高，此时，压力自适应控制阀左侧控制压力下降，阀芯向左运动，先导减压阀的控制口压力油压力上升，阀芯开口增大，推进压力升高，推进深度增加，钻进效率提高。The principle of the self-adaptive hydraulic control circuit for propulsion pressure of the down-the-hole drilling rig of the present invention is as follows: when drilling, the rock formation becomes soft, and the propulsion depth increases. At this time, the turning resistance increases, and the turning pressure rises. Rising, pushing the spool to move to the right, the pressure oil pressure at the control port of the pilot pressure reducing valve drops, the opening of the spool decreases, the propulsion pressure decreases, the propulsion depth decreases, the resistance decreases, and the rotary pressure returns to normal; when the rotary pressure or propulsion When the pressure cannot be self-adjusted and exceeds the set pressure of the relief valve, the relief valve between the first and second oil circuits will work, advance into a floating state, and send a signal to the operator; Small, the slewing resistance is reduced, and the drilling efficiency is not high. At this time, the control pressure on the left side of the pressure adaptive control valve drops, the spool moves to the left, the pressure oil pressure at the control port of the pilot pressure reducing valve rises, and the spool opening increases. The propulsion pressure increases, the propulsion depth increases, and the drilling efficiency increases.
本发明的有益效果在于：The beneficial effects of the present invention are:
本发明的潜孔钻机推进压力自适应液压控制回路能自动实现推进压力与回转压力、钻杆重量相适应，在低端潜孔钻机上应用，能提高设备的钻进效率，并实现自动防卡钻功能；采用纯液压控制回路控制，可以方便的对现有设备进行改造，改造成本低；操作人员只要会基本的操作即可，对操作人员的技能要求降低。The propulsion pressure adaptive hydraulic control circuit of the down-the-hole drilling rig of the present invention can automatically realize the adaption of the propulsion pressure, the rotary pressure and the weight of the drill pipe, and is applied to low-end down-the-hole drilling rigs, which can improve the drilling efficiency of the equipment and realize automatic anti-jamming Drilling function; the use of pure hydraulic control circuit control can easily modify the existing equipment, and the cost of modification is low; the operator only needs to know the basic operation, and the requirement for the operator's skills is reduced.
附图说明Description of drawings
为了使本发明的目的、技术方案和有益效果更加清楚，本发明提供如下附图进行说明：In order to make the purpose, technical scheme and beneficial effect of the present invention clearer, the present invention provides the following drawings for illustration:
图1为本发明潜孔钻机推进压力自适应液压控制回路实施例的液路图。Fig. 1 is a hydraulic circuit diagram of an embodiment of an adaptive hydraulic control circuit for propulsion pressure of a down-the-hole drilling rig according to the present invention.
具体实施方式detailed description
下面结合附图和具体实施例对本发明作进一步说明，以使本领域的技术人员可以更好的理解本发明并能予以实施，但所举实施例不作为对本发明的限定。The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.
如图1所示，为本发明潜孔钻机推进压力自适应液压控制回路实施例的液路图。本实施例的潜孔钻机推进压力自适应液压控制回路，包括推进油缸13和回转马达16，推进油缸13的有杆腔上连接设有第一油路1、无杆腔上连接设有第二油路2，第一油路1和第二油路2上连接设有第一多路阀9；回转马达16的两个油口上分别连接设有第三油路3和第四油路4，第三油路3和第四油路4上连接设有第二多路阀14；第一多路阀9和第二多路阀14的进油口分别与油源相连。As shown in FIG. 1 , it is a hydraulic circuit diagram of an embodiment of an adaptive hydraulic control circuit for propulsion pressure of a down-the-hole drilling rig according to the present invention. The propulsion pressure adaptive hydraulic control circuit of the down-the-hole drilling rig of this embodiment includes a propulsion cylinder 13 and a rotary motor 16. The rod cavity of the propulsion cylinder 13 is connected with a first oil circuit 1, and the rodless cavity is connected with a second oil circuit. The oil circuit 2, the first oil circuit 1 and the second oil circuit 2 are connected with a first multi-way valve 9; the two oil ports of the rotary motor 16 are respectively connected with a third oil circuit 3 and a fourth oil circuit 4, The third oil passage 3 and the fourth oil passage 4 are connected with a second multi-way valve 14; the oil inlets of the first multi-way valve 9 and the second multi-way valve 14 are respectively connected with oil sources.
第一油路和第二油路之间设有第一溢流阀10，且第一油路上设有单向先导式减压阀11；第三油路和第四油路之间设有第二溢流阀15。本实施例的单向先导式减压阀11与推进油缸13之间设有液控式单向阀12，液控式单向阀12的控制口与第二油路2相连。A first relief valve 10 is provided between the first oil circuit and the second oil circuit, and a one-way pilot pressure reducing valve 11 is provided on the first oil circuit; a second oil circuit is provided between the third oil circuit and the fourth oil circuit. Two relief valves 15. In this embodiment, a hydraulic control check valve 12 is provided between the one-way pilot pressure reducing valve 11 and the propulsion cylinder 13 , and the control port of the hydraulic control check valve 12 is connected to the second oil circuit 2 .
本实施例的潜孔钻机推进压力自适应液压控制回路还包括控制回路，控制回路包括第一控制油路5和设置在第一油路1和第四油路4之间的第二控制油路6。具体的，第一控制油路5上设有压力自适应控制阀20，压力自适应控制阀20的出油端与单向先导式减压阀11的控制油口相连，压力自适应控制阀20的进油端与第一油路14相连，且压力自适应控制阀20的进油端还与其串联设有直动式减压阀19。第一油路1与第四油路4之间串联设有节流阀17和单向阀18。The propulsion pressure adaptive hydraulic control circuit of the down-the-hole drilling rig in this embodiment also includes a control circuit, which includes a first control oil circuit 5 and a second control oil circuit arranged between the first oil circuit 1 and the fourth oil circuit 4 6. Specifically, the first control oil circuit 5 is provided with a pressure adaptive control valve 20, the oil outlet of the pressure adaptive control valve 20 is connected with the control oil port of the one-way pilot pressure reducing valve 11, and the pressure adaptive control valve 20 The oil inlet end of the pressure adaptive control valve 20 is connected to the first oil passage 14, and the oil inlet end of the pressure adaptive control valve 20 is also provided with a direct acting pressure reducing valve 19 in series. A throttle valve 17 and a check valve 18 are arranged in series between the first oil passage 1 and the fourth oil passage 4 .
第二控制油路6上设有梭阀21，梭阀21的出油口与第一溢流阀10的控制油口相连。梭阀21与第四油路4之间设有压力继电器22。本实施例的压力自适应控制阀20的一端设有第一控制油口、另一端设有第二控制油口和弹簧，控制油口设置有阻尼孔，第一控制油口与第二控制油路6相连，第二控制油口与压力自适应控制阀20的进油端相连。The second control oil passage 6 is provided with a shuttle valve 21 , and the oil outlet of the shuttle valve 21 is connected with the control oil port of the first relief valve 10 . A pressure switch 22 is provided between the shuttle valve 21 and the fourth oil passage 4 . One end of the pressure adaptive control valve 20 in this embodiment is provided with a first control oil port, the other end is provided with a second control oil port and a spring, the control oil port is provided with a damping hole, the first control oil port and the second control oil port The second control oil port is connected with the oil inlet port of the pressure adaptive control valve 20 .
本实施例的潜孔钻机推进压力自适应液压控制回路的原理为：钻孔时遇到岩层变软，推进深度增加，此时，回转阻力增加，回转压力上升，压力自适应控制阀左侧控制压力上升，推动阀芯向右运动，先导减压阀的控制口压力油压力下降，阀芯开口减小，推进压力降低，推进深度减小，阻力减小，回转压力恢复正常；当回转压力或推进压力无法自调超过溢流阀调定压力时，第一、第二油路间的溢流阀工作，推进进入浮动状态，压力继电器导通向操作人员发送信号；钻孔遇到岩层变硬时，推进深度减小，回转阻力降低，钻进效率不高，此时，压力自适应控制阀左侧控制压力下降，阀芯向左运动，先导减压阀的控制口压力油压力上升，阀芯开口增大，推进压力升高，推进深度增加，钻进效率提高。The principle of the propulsion pressure adaptive hydraulic control circuit of the down-the-hole drilling rig in this embodiment is as follows: when drilling, the rock formation becomes soft, and the propulsion depth increases. At this time, the slewing resistance increases, and the slewing pressure rises. When the pressure rises, the spool is pushed to move to the right, the oil pressure at the control port of the pilot pressure reducing valve decreases, the opening of the spool decreases, the propulsion pressure decreases, the propulsion depth decreases, the resistance decreases, and the rotary pressure returns to normal; when the rotary pressure or When the propulsion pressure cannot be self-adjusted and exceeds the set pressure of the relief valve, the relief valve between the first and second oil circuits works, and the propulsion enters a floating state, and the pressure relay guides to send a signal to the operator; when the drilling encounters rock formations and becomes hard At this time, the propulsion depth decreases, the slewing resistance decreases, and the drilling efficiency is not high. At this time, the control pressure on the left side of the pressure adaptive control valve drops, the spool moves to the left, the pressure oil pressure at the control port of the pilot pressure reducing valve rises, and the valve The core opening increases, the propulsion pressure increases, the propulsion depth increases, and the drilling efficiency improves.
本实施例的有益效果在于：The beneficial effects of this embodiment are:
本发明的潜孔钻机推进压力自适应液压控制回路能自动实现推进压力与回转压力、钻杆重量相适应，在低端潜孔钻机上应用，能提高设备的钻进效率，并实现自动防卡钻功能；采用纯液压控制回路控制，可以方便的对现有设备进行改造，改造成本低；操作人员只要会基本的操作即可，对操作人员的技能要求降低。The propulsion pressure adaptive hydraulic control circuit of the down-the-hole drilling rig of the present invention can automatically realize the adaption of the propulsion pressure, the rotary pressure and the weight of the drill pipe, and is applied to low-end down-the-hole drilling rigs, which can improve the drilling efficiency of the equipment and realize automatic anti-jamming Drilling function; the use of pure hydraulic control circuit control can easily modify the existing equipment, and the cost of modification is low; the operator only needs to know the basic operation, and the requirement for the operator's skills is reduced.
以上所述实施例仅是为充分说明本发明而所举的较佳的实施例，本发明的保护范围不限于此。本技术领域的技术人员在本发明基础上所作的等同替代或变换，均在本发明的保护范围之内。本发明的保护范围以权利要求书为准。The above-mentioned embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention shall be determined by the claims.
Claims (5)
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