[go: up one dir, main page]

CN105203415B - High-pressure water jet automatic punching mould intends impulsive force and determines device - Google Patents

High-pressure water jet automatic punching mould intends impulsive force and determines device Download PDF

Info

Publication number
CN105203415B
CN105203415B CN201510660576.5A CN201510660576A CN105203415B CN 105203415 B CN105203415 B CN 105203415B CN 201510660576 A CN201510660576 A CN 201510660576A CN 105203415 B CN105203415 B CN 105203415B
Authority
CN
China
Prior art keywords
pressure
chain
punching
confining
water jet
Prior art date
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.)
Expired - Fee Related
Application number
CN201510660576.5A
Other languages
Chinese (zh)
Other versions
CN105203415A (en
Inventor
张嘉勇
陈建
崔啸
许慎
郭立稳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
North China University of Science and Technology
Original Assignee
North China University of Science and Technology
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 North China University of Science and Technology filed Critical North China University of Science and Technology
Priority to CN201510660576.5A priority Critical patent/CN105203415B/en
Publication of CN105203415A publication Critical patent/CN105203415A/en
Application granted granted Critical
Publication of CN105203415B publication Critical patent/CN105203415B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)

Abstract

一种高压水射流冲孔自动模拟冲击力测定装置,包括固定装置、压力测定和围压模拟装置、自动升降装置。适用于对不同煤质在不同围压、不同冲孔角度下对冲孔压力、冲孔流量以及试件破坏程度进行试验测定。对井下高压水冲孔防突压力流量选定提供依据。该装置结构简单实现了高度调节自动化,围压调节更加方便,数据采集、记录、处理更加智能化。固定、安装、调试便利,对操作人员要求低。

An automatic simulated impact force measurement device for high-pressure water jet punching, including a fixing device, a pressure measurement and confining pressure simulation device, and an automatic lifting device. It is suitable for testing and measuring the punching pressure, punching flow rate and damage degree of specimens for different coal qualities under different confining pressures and different punching angles. It provides a basis for the selection of pressure and flow rate for downhole high-pressure water punching and anti-outburst. The simple structure of the device realizes automatic height adjustment, more convenient confining pressure adjustment, and more intelligent data collection, recording, and processing. It is convenient to fix, install and debug, and has low requirements for operators.

Description

高压水射流冲孔自动模拟冲击力测定装置High-pressure water jet punching automatic simulation impact force measuring device

技术领域technical field

本发明涉及一种高压水射流冲孔自动模拟冲击力测定装置,具体的说是一种模拟试件在不同围岩压力下,测定高压水的冲击力和试件裂隙发育情况的装置。The invention relates to an automatic simulated impact force measuring device for high-pressure water jet punching, in particular to a device for measuring the impact force of high-pressure water and the development of cracks in a test piece under different surrounding rock pressures by simulating the test piece.

背景技术Background technique

目前高压水射流冲孔这项技术已经成为煤矿防突的重要手段。然而,不同煤质不同围岩压力下,所需要的冲孔压力,角度,流量是不同的。现有发明的装置一般对围岩压力考虑较少,不能测出试件在围压作用下,高压水射流的冲击力和试件裂隙发育情况,且自动化程度较低。且对高压水溅水问题考虑较少,为实现受力部件移动的自动化,以及不能实现对高压水利冲孔水流冲击力的大小实现实时智能监控,因此,需要设计一款较全面且适用性强,且安全智能的装置。At present, the technology of high-pressure water jet punching has become an important means of coal mine outburst prevention. However, under different coal quality and different surrounding rock pressure, the required punching pressure, angle and flow rate are different. The devices of the existing invention generally have less consideration for the surrounding rock pressure, and cannot measure the impact force of the high-pressure water jet and the crack development of the test piece under the confining pressure, and the degree of automation is low. And the problem of high-pressure water splashing is less considered. In order to realize the automation of the movement of the stressed parts and the real-time intelligent monitoring of the impact force of the high-pressure hydraulic punching flow, it is necessary to design a more comprehensive and applicable , and a safe and intelligent device.

发明内容Contents of the invention

本发明在克服技术背景的问题情况下,设计出一种智能、安全的、自动化的、能够仿真模拟井下围岩压力的冲击力测定装置。The present invention designs an intelligent, safe and automatic impact force measuring device capable of simulating underground surrounding rock pressure under the condition of overcoming technical background problems.

本发明包括如下技术方案:The present invention includes following technical solutions:

一种高压水射流冲孔自动模拟冲击力测定装置,采用整体固定装置、压力测定和围压模拟装置、自动升降装置;整体固定装置由固定板、双向电机座、平稳滑轨组成,双向电机座固定在整体固定装置底部,垂直方向安设两条嵌入式轨道;围压模拟装置由压力传感器、压力表、钢套、安放槽、独立水压胶囊、缓冲胶垫、手动压力泵组成,压力传感器安放在最外端槽口,并且与同步计算机相连接,计算机可以实时显示压力;独立水压胶囊安放在相应钢槽内,在其里侧将缓冲胶垫安放在相应槽口,从钢槽外侧将独立水压胶囊的进压管导出与手动压力泵相连接手动压力泵上安装压力表;自动升降装置由双向电机、链条、链条滑轮、链条齿轮组成,双向电机安装在双向电机座上,电机轴向嵌入齿轮,在其垂直正上方固定一个链条滑轮,链条滑轮与齿轮用链条连接,将围压模拟装置固定在链条一侧,并将其尾部嵌入滑轨,通过改变双向电机的运转方向,从而实现围压模拟装置上下移动;围压模拟装置边缘连接了控制溅水的保护装置,控制溅水的保护装置设计成喇叭形状,适应冲孔角度的改变。An automatic simulated impact force measurement device for high-pressure water jet punching, which adopts an overall fixing device, a pressure measurement and confining pressure simulation device, and an automatic lifting device; the overall fixing device is composed of a fixing plate, a two-way motor base, and a smooth slide rail It is fixed at the bottom of the overall fixing device, and two embedded rails are installed in the vertical direction; the confining pressure simulation device is composed of a pressure sensor, a pressure gauge, a steel sleeve, a placement groove, an independent hydraulic capsule, a buffer pad, and a manual pressure pump. Placed in the outermost notch and connected with a synchronous computer, the computer can display the pressure in real time; the independent hydraulic capsule is placed in the corresponding steel channel, and the buffer pad is placed in the corresponding notch on the inner side, from the outside of the steel channel Connect the inlet pressure pipe of the independent hydraulic capsule to the manual pressure pump and install a pressure gauge on the manual pressure pump; the automatic lifting device is composed of a bidirectional motor, chain, chain pulley, and chain gear. The bidirectional motor is installed on the bidirectional motor base. Embed the gear in the axial direction, fix a chain pulley directly above it vertically, the chain pulley and the gear are connected by a chain, fix the confining pressure simulation device on one side of the chain, and insert its tail into the slide rail, by changing the running direction of the bidirectional motor, In this way, the confining pressure simulation device moves up and down; the edge of the confining pressure simulation device is connected with a protection device for controlling splashing water, and the protection device for controlling splashing water is designed in the shape of a trumpet to adapt to the change of punching angle.

如上所述的高压水射流冲孔自动模拟冲击力测定装置,其中,自动升降装置采用双向电机配合链条传导的组合方式,使围压模拟装置和压力测定装置的位置变化实现自动化。The above-mentioned high-pressure water jet punching automatic simulation impact force measurement device, wherein the automatic lifting device adopts a combination of bidirectional motors and chain transmission, so that the position changes of the confining pressure simulation device and the pressure measurement device are automated.

如上所述的高压水射流冲孔自动模拟冲击力测定装置,其中,采用压力传感器配合电脑运算软件,实现压力的实时监控和智能化。The above-mentioned high-pressure water jet punching automatic simulated impact force measuring device, wherein the pressure sensor is used in conjunction with computer computing software to realize real-time monitoring and intelligentization of pressure.

采用上述技术方案的本发明与现有技术相比,固定装置采用镶嵌滑轨使整体更加稳定。采用压力传感器,压力传感器将力学信号转化成电信号在电脑上同步记录数据,使测定的数据更准确更具有说服力,并且可以直接测定高压水的冲击力。具有围压模拟装置可手动调压。实现了冲孔高度调节的自动化。Compared with the prior art, the present invention adopting the above-mentioned technical solution adopts inlaid slide rails in the fixing device to make the whole more stable. Using a pressure sensor, the pressure sensor converts the mechanical signal into an electrical signal and records the data synchronously on the computer, making the measured data more accurate and convincing, and can directly measure the impact force of high-pressure water. With a confining pressure simulation device, the pressure can be adjusted manually. Realized the automation of punching height adjustment.

附图说明Description of drawings

图1是本发明的主视图。Fig. 1 is a front view of the present invention.

图2是本发明的左视图。Fig. 2 is a left side view of the present invention.

图3是本发明的俯视图。Figure 3 is a top view of the present invention.

图4是本发明的围压的模拟装置拆分图。Fig. 4 is an exploded view of the simulation device for confining pressure of the present invention.

图5是本发明的示意图。Figure 5 is a schematic diagram of the present invention.

具体实施方式detailed description

下面结合附图及实施例详述本发明:The present invention is described in detail below in conjunction with accompanying drawing and embodiment:

一种高压水射流冲孔自动模拟冲击力测定装置,参见附图1-5,由整体固定装置1、钢套2、独立水压胶囊3、缓冲胶垫4、防护罩5、双向电机6、压力表7、手动水压泵8、压力传感器9、链条10、链条固定部分11、压力传感器槽12、电机底座13、链条滑轮14、链条齿轮15、缓冲胶垫槽16、独立水压胶囊槽17组成。对高压水射流冲击力进行直接测定,以及不同围压不同冲击角度下测定模拟水射流冲击力大小和破坏能力的装置。该装置不同于现有水射流冲击力测定装置,尤其是测定高压水射流冲击压力。其采用直接、便捷的测定装置,能够对水射流枪口不同距离不同角度的冲击力进行测定。采用围压模拟装置,能够模拟井下复杂应力状况,实现模拟的真实性。采用水射流测定保护装置,避免测定时水流溅射发生安全事故。采用自动升降装置,是操作安全便捷。该装置结构简单,固定、安装、调试便利,对操作人员要求低。An automatic simulated impact force measurement device for high-pressure water jet punching, see attached drawings 1-5, consisting of an integral fixing device 1, a steel sleeve 2, an independent hydraulic capsule 3, a cushion rubber pad 4, a protective cover 5, a bidirectional motor 6, Pressure gauge 7, manual hydraulic pump 8, pressure sensor 9, chain 10, chain fixed part 11, pressure sensor slot 12, motor base 13, chain pulley 14, chain gear 15, buffer rubber pad slot 16, independent hydraulic capsule slot 17 compositions. It is a device for directly measuring the impact force of high-pressure water jets, and measuring the impact force and destructive capacity of simulated water jets under different confining pressures and different impact angles. The device is different from the existing measuring device for the impact force of the water jet, especially for measuring the impact pressure of the high-pressure water jet. It adopts a direct and convenient measuring device, which can measure the impact force at different distances and angles of the water jet muzzle. The confining pressure simulation device is used to simulate complex downhole stress conditions and realize the authenticity of the simulation. The water jet measurement protection device is used to avoid safety accidents caused by water splashing during measurement. The automatic lifting device is adopted, which is safe and convenient to operate. The device has simple structure, convenient fixing, installation and debugging, and low requirements for operators.

测定时一,(研究不同围压下、不同冲击力下,高压水射流对煤体破坏程度变化情况):调节双向电机6,使压力测定装置和围压模拟装置处于最佳实验位置。调节冲击角度、冲击距离并记录。在围压模拟装置内放入煤柱,用手动水压泵8对独立水压胶囊3加压,从而对煤柱产生围压,读取压力表7的示数,记作M1。并记录煤体破坏程度。然后,清理掉煤柱,高压水射流直接冲击压力传感器9,压力传感器将力学信号转化成电信号在电脑上同步记录数据,显示冲击力大小,记作F1。反复改变实验冲击水压、水流量、围压即可了解不同围压下、不同冲击力下、不同流量下,高压水射流对煤体破坏程度变化情况。Measuring time one, (study the changes in the degree of damage to the coal body by high-pressure water jets under different confining pressures and different impact forces): adjust the bidirectional motor 6 to make the pressure measuring device and confining pressure simulation device in the best experimental position. Adjust the impact angle, impact distance and record. Put the coal pillar in the confining pressure simulation device, pressurize the independent hydraulic capsule 3 with the manual hydraulic pump 8 to generate confining pressure on the coal pillar, read the reading of the pressure gauge 7, and denote it as M 1 . And record the degree of coal destruction. Then, the coal pillar is cleaned up, and the high-pressure water jet impacts the pressure sensor 9 directly. The pressure sensor converts the mechanical signal into an electrical signal and records the data synchronously on the computer to display the magnitude of the impact force, which is recorded as F 1 . Repeatedly changing the impact water pressure, water flow, and confining pressure in the experiment can understand the changes in the degree of damage to the coal body by high-pressure water jets under different confining pressures, different impact forces, and different flow rates.

测定时二(研究高压水射流在不同水压、不同流量下,枪嘴出口冲击力的变化情况):调节双向电机6,使压力测定装置和围压模拟装置处于最佳实验位置。调节冲击角度、冲击距离并记录。让高压水射流直接冲击压力传感器9,调节高压水射流的水压P和流量Q,压力传感器将力学信号转化成电信号在电脑上同步记录数据,显示冲击力大小,记作F,并将此时P值和Q值输入到计算机中。冲击一段时间后计算机运用软件自动生成冲击力与水压、流量的关系图像。Measuring time two (study the change of the impact force of the nozzle exit of the high-pressure water jet under different water pressures and different flow rates): adjust the bidirectional motor 6, so that the pressure measuring device and the confining pressure simulation device are in the best experimental position. Adjust the impact angle, impact distance and record. Let the high-pressure water jet directly impact the pressure sensor 9, adjust the water pressure P and flow Q of the high-pressure water jet, the pressure sensor converts the mechanical signal into an electrical signal and records the data synchronously on the computer to display the impact force, which is recorded as F, and this When the P value and Q value are entered into the computer. After impacting for a period of time, the computer uses software to automatically generate an image of the relationship between impact force, water pressure, and flow.

Claims (2)

1.一种高压水射流冲孔自动模拟冲击力测定装置,采用整体固定装置、压力测定和围压模拟装置、自动升降装置;整体固定装置由固定板、双向电机座、平稳滑轨组成,双向电机座固定在整体固定装置底部,垂直方向安设两条嵌入式轨道;围压模拟装置由压力传感器、压力表、钢套、安放槽、独立水压胶囊、缓冲胶垫、手动压力泵组成,压力传感器安放在最外端槽口,并且与同步计算机相连接,计算机实时显示压力;独立水压胶囊安放在相应钢槽内,在其里侧将缓冲胶垫安放在相应槽口,独立水压胶囊的进压管从钢槽外侧导出,并与手动压力泵相连接手动压力泵上安装压力表;自动升降装置由双向电机、链条、链条滑轮、链条齿轮组成,双向电机安装在双向电机座上,电机轴向嵌入链条齿轮,在其垂直正上方固定一个链条滑轮,链条滑轮与链条齿轮用链条连接,将围压模拟装置固定在链条一侧,并将其尾部嵌入滑轨,通过改变双向电机的运转方向,从而实现围压模拟装置上下移动;围压模拟装置边缘连接了控制溅水的保护装置,控制溅水的保护装置设计成喇叭形状,适应冲孔角度的改变。1. An automatic simulated impact force measurement device for high-pressure water jet punching, which adopts an overall fixing device, a pressure measurement and confining pressure simulation device, and an automatic lifting device; the overall fixing device is composed of a fixing plate, a two-way motor base, and a smooth slide rail. The motor seat is fixed at the bottom of the overall fixture, and two embedded rails are installed in the vertical direction; the confining pressure simulation device is composed of a pressure sensor, a pressure gauge, a steel sleeve, a placement slot, an independent hydraulic capsule, a buffer pad, and a manual pressure pump. The pressure sensor is placed in the outermost notch and connected to the synchronous computer, which displays the pressure in real time; the independent hydraulic capsule is placed in the corresponding steel channel, and the buffer pad is placed in the corresponding notch on the inner side, and the independent water pressure The inlet pressure pipe of the capsule is led out from the outside of the steel tank, and is connected with the manual pressure pump. A pressure gauge is installed on the manual pressure pump; the automatic lifting device is composed of a bidirectional motor, chain, chain pulley, and chain gear, and the bidirectional motor is installed on the bidirectional motor base. , the motor is axially embedded in the chain gear, and a chain pulley is fixed directly above it. The chain pulley and the chain gear are connected by a chain. The confining pressure simulation device is fixed on one side of the chain, and its tail is embedded in the slide rail. By changing the two-way motor The running direction of the confining pressure simulation device is realized to move up and down; the edge of the confining pressure simulation device is connected with a protection device for controlling splashing water, and the protection device for controlling splashing water is designed in the shape of a trumpet to adapt to the change of punching angle. 2.根据权利要求1所述的高压水射流冲孔自动模拟冲击力测定装置,其特征在于:采用压力传感器配合电脑运算软件,实现压力的实时监控。2. The device for measuring automatic simulated impact force of high-pressure water jet punching according to claim 1, characterized in that: a pressure sensor is used in conjunction with computer computing software to realize real-time monitoring of pressure.
CN201510660576.5A 2015-10-15 2015-10-15 High-pressure water jet automatic punching mould intends impulsive force and determines device Expired - Fee Related CN105203415B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510660576.5A CN105203415B (en) 2015-10-15 2015-10-15 High-pressure water jet automatic punching mould intends impulsive force and determines device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510660576.5A CN105203415B (en) 2015-10-15 2015-10-15 High-pressure water jet automatic punching mould intends impulsive force and determines device

Publications (2)

Publication Number Publication Date
CN105203415A CN105203415A (en) 2015-12-30
CN105203415B true CN105203415B (en) 2017-09-12

Family

ID=54951213

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510660576.5A Expired - Fee Related CN105203415B (en) 2015-10-15 2015-10-15 High-pressure water jet automatic punching mould intends impulsive force and determines device

Country Status (1)

Country Link
CN (1) CN105203415B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105823590A (en) * 2016-05-13 2016-08-03 武汉大学 Supercritical carbon dioxide jet-flow confining pressure kettle and motoring system
CN106437520B (en) * 2016-10-17 2018-07-31 华北理工大学 A kind of broken coal hole punched device of automatic screw type high pressure water
CN106285481B (en) * 2016-10-17 2018-07-31 华北理工大学 A kind of broken coal hole-punching method of automatic screw type high pressure water
CN107576283B (en) * 2017-09-08 2021-08-03 中国飞行试验研究院 Method for indirectly determining aircraft water splash angle by means of optical measurement parameters
CN110530606B (en) * 2019-09-25 2021-04-13 中北大学 Testing system and testing method of turbulence sensor
CN112031772B (en) * 2020-07-21 2022-03-29 大同煤矿集团有限责任公司 Method for inducing overall damage of overlying residual coal pillars by using high-pressure water jet
CN115372154A (en) * 2022-08-25 2022-11-22 上海交通大学 Large-flow high-pressure water swing impact device for multi-corner area of LNG liquid tank containment system

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353054A1 (en) * 1976-05-25 1977-12-23 Alsthom Cgee Cavitation erosion investigation apparatus - employs rotational flow to generate imploding cavity to erode sample
CN2532476Y (en) * 2002-03-15 2003-01-22 河海大学 Rock-soil mechanics microcosmic structure optics test system
CN101806691A (en) * 2010-03-05 2010-08-18 湖南省湘电锅炉压力容器检验中心有限公司 Water erosion test device
KR20100125779A (en) * 2009-05-21 2010-12-01 한국과학기술원 Rock excavation simulation apparatus using ultra high pressure waterjet
CN102252927A (en) * 2011-03-24 2011-11-23 西安交通大学 Water erosion experimental facility with/under rotary impact of high-pressure water jet
CN102288503A (en) * 2011-07-12 2011-12-21 中国石油大学(北京) Testing machine for simulating erosion of high-pressure manifold
CN102735560A (en) * 2012-07-06 2012-10-17 东南大学 Constant-pressure water jet cavitation test device
CN203164005U (en) * 2013-04-19 2013-08-28 吉林大学 Experiment apparatus of rock breaking by high-pressure water jet
CN104634687A (en) * 2015-01-19 2015-05-20 中国矿业大学 High-pressure multi-phase jet-flow cutting performance test system and method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001004512A (en) * 1999-06-24 2001-01-12 Takenaka Komuten Co Ltd Method and apparatus for measuring strength of structure concrete

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2353054A1 (en) * 1976-05-25 1977-12-23 Alsthom Cgee Cavitation erosion investigation apparatus - employs rotational flow to generate imploding cavity to erode sample
CN2532476Y (en) * 2002-03-15 2003-01-22 河海大学 Rock-soil mechanics microcosmic structure optics test system
KR20100125779A (en) * 2009-05-21 2010-12-01 한국과학기술원 Rock excavation simulation apparatus using ultra high pressure waterjet
CN101806691A (en) * 2010-03-05 2010-08-18 湖南省湘电锅炉压力容器检验中心有限公司 Water erosion test device
CN102252927A (en) * 2011-03-24 2011-11-23 西安交通大学 Water erosion experimental facility with/under rotary impact of high-pressure water jet
CN102288503A (en) * 2011-07-12 2011-12-21 中国石油大学(北京) Testing machine for simulating erosion of high-pressure manifold
CN102735560A (en) * 2012-07-06 2012-10-17 东南大学 Constant-pressure water jet cavitation test device
CN203164005U (en) * 2013-04-19 2013-08-28 吉林大学 Experiment apparatus of rock breaking by high-pressure water jet
CN104634687A (en) * 2015-01-19 2015-05-20 中国矿业大学 High-pressure multi-phase jet-flow cutting performance test system and method

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
围压对水射流冲击压力的影响研究;高晓东;《中国科技信息》;20131231(第12期);第76、79页 *
超临界二氧化碳射流破岩试验;杜玉昆 等;《中国石油大学学报(自然科学版)》;20120831;第36卷(第4期);第93-96页 *
高压水射流冲击压力分布规律的研究;林府进 等;《矿业安全与环保》;20080229;第35卷(第1期);第8、9、12页 *
高围压水射流切割实验装置的设计;廖勇 等;《流体机械》;20021231;第30卷(第12期);第16、17页 *

Also Published As

Publication number Publication date
CN105203415A (en) 2015-12-30

Similar Documents

Publication Publication Date Title
CN105203415B (en) High-pressure water jet automatic punching mould intends impulsive force and determines device
CN103558006B (en) Impulsive force controllable type impulsion pressure roadway support physical simulation impact test method and device
CN102426396B (en) Testing apparatus for simulating deep-displacement-initiated strata deformation coordination mechanism
CN104819914A (en) Experimental device for promoting gas flowing with ultrasonic waves
GB2441694A (en) A building crack monitoring device
CN106124736B (en) Displacement laboratory test model-aided measuring device in a kind of country rock ground
CN106441766B (en) A kind of deep water production riser multiphase flow vibration testing device and method
CN106052921B (en) A kind of simulation test device and test method for force change law of filling retaining wall
CN208269816U (en) A kind of degree of plainness for wall surface detection device for Real Estate Appraisal
CN105804724B (en) An ultrasonic liquid level monitoring device for petroleum drilling
CN203161204U (en) Device for measuring drilling gas discharge speed in simulated drilling process
CN104567771A (en) Vertical-displacement measurement device for unconfined oil and gas pipeline in transverse motion process
CN101339098A (en) Hydraulic breaking hammer performance measurement system
CN105118376B (en) One kind is used to simulate heavy excavation space two-dimensional analog simulation experimental device
CN205099126U (en) Elevator buffer capability test device that resets
CN204492807U (en) Steel wire level sensor
CN104267100B (en) Dynamic test method for rail flaw detection
CN109667541B (en) Dynamic balance self-propelled water jet drilling testing device and method under confining pressure state
CN106525880A (en) Nondestructive testing device for quality of existing railway tunnel lining
CN109444000B (en) Device and method for measuring lateral stress and strain in loose particle movement process
CN203023811U (en) Coal slurry pipeline blockage and leakage measuring device
CN204495273U (en) Concrete cut hole depth self-operated measuring unit
CN208751843U (en) Shield tail brush adhesive force test equipment
CN105297076A (en) Automatic measuring device for height of electrolyte and height of molten aluminum of aluminum electrolysis cell
CN207881682U (en) A kind of simple type measures the device of round tube inside diameter deformation

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20170912

Termination date: 20211015

CF01 Termination of patent right due to non-payment of annual fee