WO2019205472A1 - 一种基于液压蓄能器的可控压力喷射装置及其方法 - Google Patents
一种基于液压蓄能器的可控压力喷射装置及其方法 Download PDFInfo
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- WO2019205472A1 WO2019205472A1 PCT/CN2018/106902 CN2018106902W WO2019205472A1 WO 2019205472 A1 WO2019205472 A1 WO 2019205472A1 CN 2018106902 W CN2018106902 W CN 2018106902W WO 2019205472 A1 WO2019205472 A1 WO 2019205472A1
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- pressure
- hydraulic
- cylinder
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- rear end
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- 238000002347 injection Methods 0.000 title claims abstract description 36
- 239000007924 injection Substances 0.000 title claims abstract description 36
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 239000011435 rock Substances 0.000 claims abstract description 30
- 238000003860 storage Methods 0.000 claims abstract description 9
- 230000001105 regulatory effect Effects 0.000 claims description 26
- 239000012530 fluid Substances 0.000 claims description 24
- 239000007921 spray Substances 0.000 claims description 23
- 239000003921 oil Substances 0.000 claims description 8
- 239000010720 hydraulic oil Substances 0.000 claims description 5
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 241000857212 Varanus nebulosus Species 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000005553 drilling Methods 0.000 abstract description 3
- 238000009412 basement excavation Methods 0.000 description 12
- 238000011161 development Methods 0.000 description 6
- 239000003245 coal Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
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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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/12—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole by injecting into the borehole a liquid, either initially at high pressure or subsequently subjected to high pressure, e.g. by pulses, by explosive cartridges acting on the liquid
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1066—Making by using boring or cutting machines with fluid jets
Definitions
- the invention relates to a device for utilizing high-pressure liquid flow to break rock and break rock, in particular to a controllable pressure injection device based on hydraulic accumulator and a method thereof, and belongs to the technical field of mining roadway excavation engineering.
- the 21st century is a period of great development of tunnels and underground space.
- China's economy and the improvement of science and technology there are more and more excavation methods for underground space, but with the increase of underground space demand and the increase of excavation depth.
- the development and construction of underground space faces new difficulties and challenges.
- coal development and utilization are inseparable from the excavation of underground roadways and the excavation of deep rock masses.
- China's economic construction the demand for coal has increased, and the depth of the underground is hard.
- the excavation of rock has become a major technical difficulty and needs to be solved, which seriously restricts the coordinated development of coal mine production.
- the domestic rock roadway excavation mainly adopts the drilling and blasting method and the comprehensive excavation method, but these two excavation processes all have many problems such as low level of progress and low degree of mechanization. Especially in hard rock excavation, the tunneling efficiency is significantly reduced.
- the present invention provides a controllable pressure injection device based on a hydraulic accumulator and a method thereof, which can convert the pressure of a high pressure fluid into a cracking force acting on the inside of the rock, thereby effectively improving the hardness. Rock driving efficiency.
- a controllable pressure injection device based on a hydraulic accumulator comprising: a pressure storage system, a pressure maintaining system, a sealing system and an injection system; the pressure storage system comprises a front half of the pressure cylinder, an annular piston and a middle connection
- the body is mounted on the same axis, and the annular piston is located between the pressure cylinder and the hydraulic regulating tube and is dynamically sealed.
- the front half of the pressure cylinder is fixedly connected with the end of the middle connecting body, and the two ends are provided in the middle connecting body.
- the pressure maintaining system includes an accumulator, a rear half and a rear end cover of the pressure cylinder, a rear half of the pressure cylinder, and a rear end of the hydraulic pressure regulating tube, respectively Removably connected and sealed with the rear end cover, the outer end of the rear end cover is mounted with an accumulator, and the accumulator is connected to the inner cavity of the rear half of the pressure cylinder;
- the sealing system comprises a hydraulic propulsion cylinder, a propulsion piston, and a front end Cover, sealing tube, thickened end and expansion hose, the sealing tube passes through the front end cover and the axis of the propulsion piston in turn, and the rear end of the sealing tube is fixedly connected with the propulsion piston, the expansion hose and the sealing tube The front end is connected and the coaxial line is connected, and the sealing tube and the front end cover and the propulsion piston and the hydraulic propulsion cylinder are dynamically sealed.
- the front end of the hydraulic propulsion cylinder is detachably connected to the rear end of the front end cover and sealed, and the hydraulic propulsion cylinder
- the rear end is fixedly connected with the middle connecting body, and the middle connecting body is further provided with an inlet and outlet port respectively communicating the external and hydraulic propulsion cylinder inner chambers;
- the injection system includes a hydraulic valve body and a spray gun tube, and the hydraulic valve body Coaxially mounted inside the front port of the hydraulic regulating tube in the pressure accumulating system, and the dynamic sealing is performed between the two at the front end.
- the coaxial line of the jet barrel is sleeved inside the sealing tube and passes through the propulsion piston, and the front end of the barrel is sprayed.
- the rear end of the spray gun tube is fixedly connected with the middle connecting body, and the front end of the hydraulic valve body has a tapered surface, which is matched with the groove at the rear end of the spray gun tube.
- a controllable pressure injection method based on a hydraulic accumulator comprises the following steps:
- the pressure in the hydraulic regulating pipe is gradually decreased to 0.
- the pressure generated by the high pressure region on the front end tapered surface of the hydraulic valve body is greater than the oil pressure in the rear hydraulic regulating pipe, the hydraulic valve body slides backward. Separated from the groove at the rear end of the barrel, the high-pressure fluid medium instantaneously flows into the sealed space at the bottom of the rock hole under the action of its own pressure and the thrust of the annular piston, and the pressure generated is sufficient to cause the rock to rupture from the inside.
- the controllable pressure injection device based on the hydraulic accumulator of the present invention and the method thereof can realize the hard rock with lower pressure by utilizing the tensile strength of the rock far lower than the compressive strength. Broken, rock-breaking efficiency, safety and environmental protection.
- the invention can replace the conventional drilling-explosion method, and is easy to be combined with the excavation equipment such as the roadheader and the rock drill.
- the connection with the electromechanical control device can realize the exploitation and excavation of no one or few people in the underground, and has the advantages of small scale and easy control.
- Figure 1 is a schematic view showing the structure of an embodiment of the present invention.
- Figure 2 is an enlarged view of a portion A in Figure 1.
- Figure 3 is an enlarged view of B in Figure 1.
- a hydraulic accumulator-based controllable pressure injection device for applying a cracking force to rock in a borehole to crush rock from the borehole, including storage pressure
- the pressure cylinder 4 and the hydraulic regulating tube 3 are dynamically sealed, and the front half portion 4-2 of the pressure cylinder is fixedly connected with the end portion of the middle connecting body 7, and the two ends of the middle connecting body 7 are respectively connected to the outside and the pressure.
- the pressure retaining system includes an accumulator 2, a rear half 4-1 of the pressure cylinder and a rear end cover 1, and a rear end 4-1 of the pressure cylinder and a rear end of the hydraulic regulating tube 3 are detachably connected to the rear end cover 1, respectively.
- the outer end of the rear end cover 1 is mounted with an accumulator 2, and the accumulator 2 is connected to the pressure
- the rear half of the cylinder 4-1 is internal; the accumulator 2 absorbs the high pressure oil from the pressure cylinder 4, and when the high pressure fluid medium at the front end of the annular piston 5 is ejected, the accumulator 2 releases the stored hydraulic oil to maintain the pressure cylinder 4 for a short time.
- the pressure inside does not drop drastically; as the pressure in the pressure cylinder 4 rises to a set pressure, the oil pressure in the hydraulic pressure regulating tube 3 is lowered, and the hydraulic valve body 6 moves backward under the pressure of the high pressure fluid medium, the high pressure The fluid medium is ejected from the jet barrel 11.
- the sealing system comprises a hydraulic propulsion cylinder 8, a propulsion piston 9, a front end cover 10, a sealing tube 12, a thickened end portion 14 and an expansion hose 13, which in turn passes through the front end cover 10 and the axis of the propulsion piston 9,
- the rear end of the sealing tube 12 is fixedly connected to the propulsion piston 9, and the expansion hose 13 is connected to the front end of the sealing tube 12 and connected coaxially.
- the sealing tube 12 and the front end cover 10 and the propulsion piston 9 and the hydraulic propulsion cylinder 8 are both connected.
- the movable seal, the expansion hose 13 can move along the axis along with the propulsion piston 9, the front end of the hydraulic propulsion cylinder 8 is detachably connected to the rear end of the front end cover 10 and sealed, and the rear end of the hydraulic propulsion cylinder 8 and the middle connection body 7 are Fixed connection by welding, etc., in the middle connecting body 7 is also provided with two inlet and outlet ports 7-2 respectively communicating with the outer chamber and the inner chamber of the hydraulic propulsion cylinder 8, and the backward pressure of the high pressure fluid medium from the front end is passed through the annular piston 5 Hydraulic oil is forced into the accumulator to store the pressure in the system.
- the injection system includes a hydraulic valve body 6 and a spray gun tube 11.
- the hydraulic valve body 6 is coaxially mounted inside the hydraulic pressure regulating tube 3 in the pressure storage system, and the front end is dynamically sealed at the front end, and the final hydraulic valve body 6 can only be translated in the groove of the front end of the hydraulic regulating tube 3, and cannot be removed; the injection barrel 11 is coaxially sleeved inside the sealing tube 12 and passes through the propulsion piston 9, and the front end of the injection barrel 11 is coaxial and detachable.
- the ground end is connected with a thickened end portion 14, and the rear end of the spray gun tube 11 is fixedly connected to the middle connecting body 7 by welding or the like.
- the front end of the hydraulic valve body 6 has a tapered surface portion 6-1, and a groove at the rear end of the spray gun tube 11 11-1 fits.
- the hydraulic valve body 6 is used to open and close the communication state between the pressure cylinder 4 and the injection barrel 11, and the start and stop control of the injection system is realized by the hydraulic pressure regulating tube 3.
- the tapered surface 6-1 of the front end of the hydraulic valve body 6 is adhered to the groove 11-1 at the rear end of the spray gun tube 11 to leave a part of the tapered surface exposed to the high pressure fluid, and the hydraulic valve body 6 produces a backward thrust.
- the annular piston 5 and the pressure cylinder 4 and the hydraulic regulating tube 3 are both dynamically sealed by a guide belt and a glyph ring, so that the annular piston 5 can slide between the hydraulic regulating tube 3 and the pressure cylinder 4.
- the front half portion 4-2 of the pressure cylinder and the end portion of the middle connecting body 7 are welded together; the rear half portion 4-1 of the pressure cylinder and the rear end cover 1 are screwed together, and the middle portion passes through the O type. Circle seal.
- the hydraulic propulsion cylinder 8 is screwed to the rear end of the front end cover 10, and an O-ring is arranged therebetween to ensure the sealing of the hydraulic oil; a guide belt and a seal are provided between the front end cover 10 and the sealing tube 12 to ensure the hydraulic pressure. Oil seal.
- the thickened end portion 14 is screwed on the spray gun tube 11; the hydraulic valve body 6 and the hydraulic pressure regulating tube 3 are dynamically sealed by a guide sleeve and a glyph ring, so that the hydraulic valve body 6 is hydraulically oiled in the tube. Pushing forward and moving forward, the tapered surface portion 6-1 of the front end of the hydraulic valve body 6 is fitted to the groove 11-1 at the rear end of the spray gun tube 11, and a sealed space is formed in the pressure cylinder 4.
- a convex ring is provided on the end face of the central connecting body 7 facing the pressure cylinder 4, the raised ring being located in the inner cavity of the pressure cylinder 4, the height of the raised ring Can go 1 cm.
- the groove 11-1 at the rear end of the injection barrel 11 and the tapered surface 6-1 at the front end of the hydraulic valve body 6 are both chamfered by 45°; further, the groove 11-1 is 1 ⁇ 1 mm chamfer, cone surface 6-1 is a chamfer of 8 x 8 mm.
- the high pressure fluid medium may be a medium such as high pressure foam or high pressure water.
- the controllable pressure injection of the present invention is that the hydraulic regulating pipe 3 is supplied with oil by a controllable hydraulic pumping station, and the pressure of the jetting fluid medium is controlled by setting different oil supply.
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Fluid-Pressure Circuits (AREA)
- Earth Drilling (AREA)
Abstract
Description
Claims (10)
- 一种基于液压蓄能器的可控压力喷射装置,其特征是:包括储压***、保压***、密封***和喷射***;其中,所述的储压***包括压力缸前半部(4-2)、环形活塞(5)和中部连接体(7),三者安装在同一轴线上,环形活塞(5)位于压力缸(4)和液压调节管(3)之间并进行动密封,压力缸前半部(4-2)与中部连接体(7)的端部固连在一起,在中部连接体(7)内设有两端分别连通外部和压力缸前半部(4-2)内腔的高压流体进口流道(7-1);所述的保压***包括蓄能器(2)、压力缸后半部(4-1)和后端盖(1),压力缸后半部(4-1)和液压调节管(3)的后端分别与后端盖(1)可拆卸连接并进行密封,后端盖(1)的外端安装有蓄能器(2),且蓄能器(2)连通到压力缸后半部(4-1)内腔;所述的密封***包括液压推进缸(8)、推进活塞(9)、前端盖(10)、密封管(12)、增厚端部(14)和膨胀胶管(13),密封管(12)依次穿过前端盖(10)和推进活塞(9)的轴心,密封管(12)后端与推进活塞(9)固定连接为一体,膨胀胶管(13)与密封管(12)的前端对接、同轴线相连,密封管(12)与前端盖(10)以及推进活塞(9)与液压推进缸(8)之间都进行动密封,液压推进缸(8)的前端可拆卸地连接在前端盖(10)的后端并进行密封,液压推进缸(8)的后端与中部连接体(7)固定连接,在中部连接体(7)内还设有两端分别连通外部和液压推进缸(8)内腔的进出油口(7-2);所述的喷射***包括液压阀体(6)和喷射枪管(11),液压阀体(6)同轴安装在储压***中的液压调节管(3)内部,且二者之间于前端进行动 密封,喷射枪管(11)同轴线套设于密封管(12)内部并穿过推进活塞(9),喷射枪管(11)的前端同轴、可拆卸地连接有增厚端部(14),喷射枪管(11)的后端与中部连接体(7)固定连接,液压阀体(6)前端具有锥面区(6-1),与喷射枪管(11)后端的凹槽(11-1)相贴合。
- 根据权利要求1所述的一种基于液压蓄能器的可控压力喷射装置,其特征是:所述的环形活塞(5)与压力缸(4)和液压调节管(3)之间均通过导向带和格莱圈进行动密封,使环形活塞(5)能够在液压调节管(3)和压力缸(4)之间滑移。
- 根据权利要求1或2所述的一种基于液压蓄能器的可控压力喷射装置,其特征是:所述的压力缸前半部(4-2)与中部连接体(7)的端部是焊接在一起;压力缸后半部(4-1)与后端盖(1)通过螺纹连接,中间通过O型圈密封。
- 根据权利要求1或2所述的一种基于液压蓄能器的可控压力喷射装置,其特征是:在所述中部连接体(7)朝向压力缸(4)的端面上设有一个凸起圆环,该凸起圆环位于压力缸(4)的内腔中。
- 根据权利要求1或2所述的一种基于液压蓄能器的可控压力喷射装置,其特征是:所述的液压推进缸(8)通过螺纹连接在前端盖(10)的后端,其间设有O型圈保证液压油的密封;前端盖(10)与密封管(12)之间设有导向带和斯特封来保证液压油的密封。
- 根据权利要求1或2所述的一种基于液压蓄能器的可控压力喷射装置,其特征是:所述的增厚端部(14)通过螺纹连接在喷射枪管(11)上;液压阀体(6)和液压调节管(3)之间通过导向套和格莱圈进行动密封。
- 根据权利要求1或2所述的一种基于液压蓄能器的可控压力喷射装置,其特征是:所述的喷射枪管(11)后端的凹槽(11-1)与液压阀体(6)前端的锥面区(6-1)都为45°的倒角,且凹槽(11-1)为1×1mm倒角,锥面区(6-1)为8×8mm的倒角。
- 根据权利要求1或2所述的一种基于液压蓄能器的可控压力喷射装置,其特征是:所述液压推进缸(8)的后端与中部连接体(7)焊接;喷射枪管(11)的后端与中部连接体(7)焊接固定。
- 一种基于液压蓄能器的可控压力喷射方法,其特征在于,包括如下步骤:a、将喷射枪管(11)***岩石钻孔中,推进活塞(9)推动密封管(12)将膨胀胶管(13)推至增厚端部(14),使喷射枪管(11)外直径扩大与岩石钻孔内壁贴合,在岩石钻孔的孔底形成密封空间;b、启动液压调节阀体(6),与喷射枪管(11)后端的凹槽(11-1)贴合;经高压流体进口流道(7-1)通入高压流体介质,在压力缸(4)前段形成高压区域;c、监测压力缸(4)与蓄能器(2)的压力变化;d、压力达到预定值后,降低液压调节管(3)中压力逐渐为0,当高压区域对液压阀体(6)前端锥面区(6-1)产生的压力大于后端液压调节管(3)中油路压力后,液压阀体(6)向后滑移与喷射枪管后端凹槽(11-1)分离,高压流体介质在自身压力和环形活塞(5)的推力作用下瞬间涌入岩石钻孔孔底的密封空间,产生的压力足以使岩石从内部破裂。
- 根据权利要求9任一项所述的一种基于液压蓄能器的可控压力喷射 装置,其特征是:所述的高压流体介质为高压泡沫或者高压水。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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AU2018420716A AU2018420716A1 (en) | 2018-04-25 | 2018-09-21 | Controllable pressure injection apparatus based on hydraulic accumulator and method therefor |
CA3081867A CA3081867A1 (en) | 2018-04-25 | 2018-09-21 | Hydraulic accumulator-based controllable pressure injection device and method |
US16/764,395 US20200355031A1 (en) | 2018-04-25 | 2018-09-21 | Hydraulic accumulator-based controllable pressure injection device and method |
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CN201810378319.6A CN108775245B (zh) | 2018-04-25 | 2018-04-25 | 一种基于液压蓄能器的可控压力喷射装置及其方法 |
CN201810378319.6 | 2018-04-25 |
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US (1) | US20200355031A1 (zh) |
CN (1) | CN108775245B (zh) |
AU (1) | AU2018420716A1 (zh) |
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CN110905544B (zh) * | 2019-11-26 | 2021-02-09 | 中国矿业大学 | 一种脉冲射流辅助式掘进机 |
CN114151082B (zh) * | 2021-10-27 | 2023-12-12 | 中国矿业大学 | 一种自动高压射流辅助破岩及泡沫灭尘截齿装置 |
CN114477323B (zh) * | 2022-01-10 | 2023-04-25 | 珠海格力电器股份有限公司 | 一种扣合结构及净水机 |
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- 2018-09-21 CA CA3081867A patent/CA3081867A1/en not_active Abandoned
- 2018-09-21 US US16/764,395 patent/US20200355031A1/en not_active Abandoned
- 2018-09-21 AU AU2018420716A patent/AU2018420716A1/en not_active Abandoned
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US20200355031A1 (en) | 2020-11-12 |
CA3081867A1 (en) | 2019-10-31 |
CN108775245A (zh) | 2018-11-09 |
CN108775245B (zh) | 2019-08-02 |
AU2018420716A1 (en) | 2020-07-30 |
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