US20200355031A1 - Hydraulic accumulator-based controllable pressure injection device and method - Google Patents

Hydraulic accumulator-based controllable pressure injection device and method Download PDF

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Publication number
US20200355031A1
US20200355031A1 US16/764,395 US201816764395A US2020355031A1 US 20200355031 A1 US20200355031 A1 US 20200355031A1 US 201816764395 A US201816764395 A US 201816764395A US 2020355031 A1 US2020355031 A1 US 2020355031A1
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US
United States
Prior art keywords
hydraulic
pressure
tube
cylinder
pressure cylinder
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/764,395
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English (en)
Inventor
Songyong Liu
Zhencai Zhu
Haodong WANG
Gang Shen
Hongxiang Jiang
Xinxia Cui
Hongsheng Li
Wei Li
Xin Zhang
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China University of Mining and Technology CUMT
Xuzhou Zhirun Mining Equipment Science and Technology Co Ltd
Original Assignee
China University of Mining and Technology CUMT
Xuzhou Zhirun Mining Equipment Science and Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China University of Mining and Technology CUMT, Xuzhou Zhirun Mining Equipment Science and Technology Co Ltd filed Critical China University of Mining and Technology CUMT
Assigned to CHINA UNIVERSITY OF MINING AND TECHNOLOGY, XUZHOU ZHIRUN MINING EQUIPMENT SCIENCE AND TECHNOLOGY CO., LTD reassignment CHINA UNIVERSITY OF MINING AND TECHNOLOGY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CUI, Xinxia, JIANG, Hongxiang, LI, Hongsheng, LI, WEI, LIU, Songyong, SHEN, GANG, WANG, Haodong, ZHANG, XIN, ZHU, ZHENCAI
Publication of US20200355031A1 publication Critical patent/US20200355031A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • 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
    • 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 present invention relates to a device for cracking rock with high pressure liquid flow, and in particular, to a hydraulic accumulator-based controllable pressure injection device and method, belonging to the technical field of mining roadway excavation engineering.
  • the 21st century is a period of great development of tunnels and underground space.
  • As the most important energy source in the energy system of China the development and utilization of coal are dependent on the excavation of underground roadways and the excavation of deep rock masses.
  • China's economic construction the demand for coal has increased steadily, and the excavation of underground deep hard rock has become a major technical difficulty to be solved, which seriously restricts the coordinated development of coal mine production.
  • the domestic rock roadway excavation mainly adopts a borehole-blasting method and a fully-mechanized excavating method, but the two excavation processes both have many problems such as low level of footage and low degree of mechanization. Especially, in hard rock excavation, the excavation efficiency is significantly reduced.
  • the present invention provides a hydraulic accumulator-based controllable pressure injection device and method, which can convert the pressure of a high pressure fluid into a cracking force acting on the inside of rock, thereby effectively improving the hard rock excavation efficiency.
  • a hydraulic accumulator-based controllable pressure injection device including a pressure storage system, a pressure maintaining system, a sealing system, and an injection system.
  • the pressure storage system includes a pressure cylinder front half portion, an annular piston and a middle connecting body, which are mounted on the same axis, the annular piston is located between a pressure cylinder and a hydraulic adjusting tube and dynamically sealed, the pressure cylinder front half portion is fixedly connected to an end portion of the middle connecting body, and a high pressure fluid inlet flow passage having both ends respectively communicating with the outside and an inner chamber of the pressure cylinder front half portion is provided in the middle connecting body.
  • the pressure maintaining system includes an accumulator, a pressure cylinder rear half portion and a rear end cover, the pressure cylinder rear half portion and a rear end of the hydraulic adjusting tube are detachably connected to the rear end cover, respectively, and sealed, an outer end of the rear end cover is provided with the accumulator, and the accumulator is communicated to an inner chamber of the pressure cylinder rear half portion.
  • the sealing system includes a hydraulic propulsion cylinder, a propulsion piston, a front end cover, a sealing tube, a thickened end portion, and an expansion rubber tube, the sealing tube sequentially penetrates through the axes of the front end cover and the propulsion piston, a rear end of the sealing tube and the propulsion piston are fixedly connected into a whole, the expansion rubber tube and a front end of the sealing tube are butted and coaxially connected, the sealing tube and the front end cover are dynamically sealed, the propulsion piston and the hydraulic propulsion cylinder are dynamically sealed, a front end of the hydraulic propulsion cylinder is detachably connected to a rear end of the front end cover and sealed, a rear end of the hydraulic propulsion cylinder is fixedly connected to the middle connecting body, and an oil inlet and outlet port having both ends respectively communicating with the outside and an inner chamber of the hydraulic propulsion cylinder is also provided in the middle connecting body.
  • the injection system includes a hydraulic valve body and an injection gun tube, the hydraulic valve body is coaxially mounted inside a front port of the hydraulic adjusting tube in the pressure storage system and the two are dynamically sealed at front ends, the injection gun tube is coaxially sleeved inside the sealing tube and penetrates through the propulsion piston, the thickened end portion is coaxially and detachably connected to a front end of the injection gun tube, a rear end of the injection gun tube is fixedly connected to the middle connecting body, and a front end of the hydraulic valve body has a cone area fitting a groove at a rear end of the injection gun tube.
  • a hydraulic accumulator-based controllable pressure injection method including the following steps:
  • the hydraulic accumulator-based controllable pressure injection device and method of the present invention can realize breaking of hard rock under a lower pressure with high rock-breaking efficiency, safety and environmental protection by utilizing the characteristic that the tensile strength of the rock is far lower than the compressive strength.
  • the device may replace a conventional borehole-blasting excavation mode, is easy to be combined with excavation equipment such as a heading machine and a rock drill, can realize underground exploitation and excavation by no one or few people when connected to electromechanical control equipment, and has the advantages of small scale, easy control and the like.
  • FIG. 1 is a structural schematic diagram according to one embodiment of the present invention.
  • FIG. 2 is an enlarged view of part A in FIG. 1 .
  • FIG. 3 is an enlarged view of part B in FIG. 1 .
  • a “front” end, a “front” half portion or a “front” side mentioned in the present embodiment refers to a downward direction in FIG. 1 , and “rear” is in line with an “upward” direction.
  • the sealing system includes 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 rubber tube 13 , the sealing tube 12 sequentially penetrates through the axes of the front end cover 10 and the propulsion piston 9 , a rear end of the sealing tube 12 and the propulsion piston 9 are fixedly connected into a whole, the expansion rubber tube 13 and a front end of the sealing tube 12 are butted and coaxially connected, the sealing tube 12 and the front end cover 10 are dynamically sealed, the propulsion piston 9 and the hydraulic propulsion cylinder 8 are dynamically sealed, the expansion rubber tube 13 can move along the axis with the propulsion piston 9 , a front end of the hydraulic propulsion cylinder 8 is detachably connected to a rear end of the front end cover 10 and sealed, a rear end of the hydraulic propulsion cylinder 8 is fixedly connected to the middle connecting body 7 by welding or the like, an oil inlet and outlet port 7 - 2 having
  • the injection system includes a hydraulic valve body 6 and an injection gun tube 11 , the hydraulic valve body 6 is coaxially mounted inside the hydraulic adjusting tube 3 in the pressure storage system and the two are dynamically sealed at front ends, and finally, the hydraulic valve body 6 can only be translated in a groove at the front end of the hydraulic adjusting tube 3 , and cannot be moved out; and the injection gun tube 11 is coaxially sleeved inside the sealing tube 12 and penetrates through the propulsion piston 9 , the thickened end portion 14 is coaxially and detachably connected to a front end of the injection gun tube 11 , a rear end of the injection gun tube 11 is fixedly connected to the middle connecting body 7 by welding or the like, and the front end of the hydraulic valve body 6 has a cone area 6 - 1 fitting a groove 11 - 1 at a rear end of the injection gun tube 11 .
  • the hydraulic valve body 6 is used to open and close a communication state between the pressure cylinder 4 and the injection gun tube 11 , and the start and stop control of the injection system is realized by the hydraulic adjusting tube 3 .
  • the cone area 6 - 1 at the front end of the hydraulic valve body 6 fits the groove 11 - 1 at the rear end of the injection gun tube 11 , but there is still a part of the cone area exposed to a high pressure fluid, and a backward thrust is generated for the hydraulic valve body 6 .
  • the annular piston 5 is dynamically sealed with the pressure cylinder 4 and the hydraulic adjusting tube 3 through a guide strip and a Glyd ring, respectively, so that the annular piston 5 is slidable between the hydraulic adjusting tube 3 and the pressure cylinder 4 .
  • the pressure cylinder front half portion 4 - 2 and the end portion of the middle connecting body 7 are welded together.
  • the pressure cylinder rear half portion 4 - 1 and the rear end cover 1 are connected by threads, and an O ring is provided therebetween for sealing.
  • the hydraulic propulsion cylinder 8 is connected to the rear end of the front end cover 10 by threads, and an O ring is provided therebetween to ensure sealing of hydraulic oil.
  • a guide strip and a step seal are provided between the front end cover 10 and the sealing tube 12 to ensure sealing of the hydraulic oil.
  • the thickened end portion 14 is connected to the injection gun tube 11 by threads, and the hydraulic valve body 6 and the hydraulic adjusting tube 3 are dynamically sealed through a guide sleeve and a Glyd ring, so that the hydraulic valve body 6 is pushed by hydraulic oil in the tube to move forwards, and the cone area 6 - 1 at the front end of the hydraulic valve body 6 fits the groove 11 - 1 at the rear end of the injection gun tube 11 to form a sealed space in the pressure cylinder 4 .
  • a raised circular ring is provided on an end face of the middle connecting body 7 facing the pressure cylinder 4 , the raised circular ring is located in an inner chamber of the pressure cylinder 4 , and the height of the raised circular ring can be 1 cm.
  • the groove 11 - 1 at the rear end of the injection gun tube 11 and the cone area 6 - 1 at the front end of the hydraulic valve body 6 are both chamfers of 45 degrees. Furthermore, the groove 11 - 1 is a 1 ⁇ 1 mm chamfer, and the cone area ( 6 - 1 ) is an 8 ⁇ 8 mm chamfer.
  • the high pressure fluid medium may be high pressure foam or high pressure water.
  • the controllable pressure injection of the device is characterized in that the hydraulic adjusting tube 3 is supplied with oil by a controllable hydraulic pumping station, and the magnitude of a pressure for injecting a fluid medium is controlled by setting different oil supplies.

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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)
US16/764,395 2018-04-25 2018-09-21 Hydraulic accumulator-based controllable pressure injection device and method Abandoned US20200355031A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN201810378319.6 2018-04-25
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
PCT/CN2018/106902 WO2019205472A1 (fr) 2018-04-25 2018-09-21 Appareil d'injection à pression réglable basé sur un accumulateur hydraulique et son procédé

Publications (1)

Publication Number Publication Date
US20200355031A1 true US20200355031A1 (en) 2020-11-12

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US16/764,395 Abandoned US20200355031A1 (en) 2018-04-25 2018-09-21 Hydraulic accumulator-based controllable pressure injection device and method

Country Status (5)

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US (1) US20200355031A1 (fr)
CN (1) CN108775245B (fr)
AU (1) AU2018420716A1 (fr)
CA (1) CA3081867A1 (fr)
WO (1) WO2019205472A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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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ES464093A1 (es) * 1977-11-12 1978-12-16 Luis Miguel Castejon Castan Perfeccionamientos en los sistemas de fluidos alternantes y aparato para su realizacion.
SE434289B (sv) * 1979-10-23 1984-07-16 Cerac Inst Sa Anordning for brytning av harda material
CN2823557Y (zh) * 2005-02-07 2006-10-04 方莹 液压劈岩机
CN201062516Y (zh) * 2007-03-22 2008-05-21 唐立新 手持式液压破碎锤
CN101666207B (zh) * 2009-09-15 2011-09-28 刘国经 蓄能式液压潜孔锤
CN202724526U (zh) * 2012-07-30 2013-02-13 四川海川消防设备有限公司 液控冲击喷射装置
CN203547752U (zh) * 2013-07-16 2014-04-16 福州德格索兰机械有限公司 液压劈裂机
CN203655296U (zh) * 2013-11-07 2014-06-18 柳州市博亚机械有限公司 一种超高压防漏液压岩石分裂机
CN104033155B (zh) * 2014-06-16 2017-11-10 湖南铭益隧道工程技术有限公司 一种新型隧道光面开掘凿岩设备及施工方法
CN204225892U (zh) * 2014-10-11 2015-03-25 北京市政路桥股份有限公司 一种气动破碎岩石机具装置
CN104763712B (zh) * 2015-03-19 2017-05-17 地质矿产廊坊聚力岩土工程科技开发公司 一种自推进自涨紧固定机构
KR101710476B1 (ko) * 2016-08-24 2017-03-14 영인산업 주식회사 수압을 이용하여 암반절개를 위한 패커
CN106703805B (zh) * 2016-12-02 2018-07-27 中国矿业大学 一种基于高压泡沫介质的钻涨凿岩一体机及方法

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Publication number Publication date
CN108775245A (zh) 2018-11-09
AU2018420716A1 (en) 2020-07-30
CA3081867A1 (fr) 2019-10-31
CN108775245B (zh) 2019-08-02
WO2019205472A1 (fr) 2019-10-31

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Owner name: XUZHOU ZHIRUN MINING EQUIPMENT SCIENCE AND TECHNOLOGY CO., LTD, CHINA

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