CN107064227A - A kind of device and method for monitoring paste filling pipe - Google Patents

A kind of device and method for monitoring paste filling pipe Download PDF

Info

Publication number
CN107064227A
CN107064227A CN201710175467.3A CN201710175467A CN107064227A CN 107064227 A CN107064227 A CN 107064227A CN 201710175467 A CN201710175467 A CN 201710175467A CN 107064227 A CN107064227 A CN 107064227A
Authority
CN
China
Prior art keywords
snap ring
electrode
chip microcomputer
signal amplifier
measuring
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.)
Granted
Application number
CN201710175467.3A
Other languages
Chinese (zh)
Other versions
CN107064227B (en
Inventor
冯国瑞
李化运
郭育霞
戚庭野
张玉江
郭军
李振
白锦文
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.)
Taiyuan University of Technology
Original Assignee
Taiyuan University of 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 Taiyuan University of Technology filed Critical Taiyuan University of Technology
Priority to CN201710175467.3A priority Critical patent/CN107064227B/en
Publication of CN107064227A publication Critical patent/CN107064227A/en
Application granted granted Critical
Publication of CN107064227B publication Critical patent/CN107064227B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/041Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Pipeline Systems (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

The invention discloses a kind of device for monitoring paste filling pipe, including the adjustable circular open snap ring of opening, device for measuring polarizability;Device for measuring polarizability includes current electrode, measuring electrode, power supply, signal amplifier, single-chip microcomputer and PC computers;Current electrode and measuring electrode are arranged in pairs in circular open snap ring, current electrode is connected with the first power supply, the measuring electrode on snap ring top is connected with single-chip microcomputer, the measuring electrode of snap ring bottom is connected with signal amplifier, signal amplifier connects single-chip microcomputer, single-chip microcomputer is connected with PC computers, and signal amplifier, single-chip microcomputer and PC computers are connected with second source, and said elements are connected by wire.Circular open snap ring is arranged on the outside of paste filling pipe to be measured by the present invention, is fastened by adjusting screw rod;The polarizability arranged at multiple monitoring point monitoring diverse locations is easy to note abnormalities in time.The present invention is simple in construction, and service life is long, cost-effective.

Description

A kind of device and method for monitoring paste filling pipe
Technical field
The present invention relates to a kind of device and method for monitoring paste filling pipe, belong to paste filling material pipe transportation technology Field.
Background technology
Paste body filling, which refers to optimize one or more fillers with water, to be combined, and is configured to have good stabilization The toothpaste-like adhesive bond of property, mobility and plasticity, in gravity or applied force(Pump pressure)Conveyed under effect with the form of plug flow The process of packing job is completed to goaf.
The advantage of paste body filling exploitation is can to solve China's coal-mine to be caving formula exploitation, can prevent gob collapse, protect Retaining ring border;Be conducive to improving the security exploited;Relative to traditional Mined-out Area control method for being caving formula, filling mining can subtract Few destruction to water resource, soil, building etc.;The remaining coal column of " under three " can be effectively liberated, the utilization rate of resource is improved, Extend the length of service of mine;Effectively using discarded spoil etc., the recycling of discarded object is carried out.But its deficiency is In course of conveying, line clogging is easily caused because corner flowing velocity such as slows down at the reason.Plugging not only influences packing job Be normally carried out, cause huge economic losses to whole filling system.Pipeline jam accident, which is even more one, to be needed to further investigate and solves Technical barrier, it is that the slurry in pipeline is detected that whether anticipation, which occurs one of important means of plugging, passes through observation tube Road middle finger target changes to judge.Therefore, it is to solve the primary of filling plugging situation to appoint to research and develop more advanced plugging monitoring technology Business and important problem.
The method used most of at present is to detect the pressure of tube wall, so as to judge whether plugging.If certain section of pipeline There is plugging, a segment pipe pressure above will be raised.Currently used traditional pressure sensor is carrying out tube wall pressure During measurement, due to being that it is necessary to have higher wearability for swiftly flowing slurry in pipeline;In addition, paste filling material In big aggregate be easily destroyed pressure sensor, so as to not have the effect of detection.Chinese patent CN103454017A is disclosed A kind of pressure adjustable nodal pattern paste filling pipe plugging detection means, includes lower cylinder body and upper cylinder body, is characterized in working as pressure During increase, piston rod promotes cylinder body inside connecting rod, and connecting rod pressure gauge connection measurement pressure, this device design structure is complicated, in Between transmission pressure it is excessively frequent, error is big.
The content of the invention
The present invention is intended to provide a kind of device and method for monitoring paste filling pipe, principle is simple, cost is relatively low, operation It is convenient.
The invention provides a kind of device for monitoring paste filling pipe, including circular open snap ring, polarizability measurement dress Put;
The circular open snap ring is the position that fixed electrode is evenly arranged in the adjustable hollow ring of opening, annulus, circle Connector is provided with the opening of shape slotted collar, the snap ring is fixed on by connector on the outside of paste filling pipe to be measured;
The device for measuring polarizability includes current electrode, measuring electrode, power supply, signal amplifier, single-chip microcomputer and PC computers; Current electrode and measuring electrode are arranged in circular open snap ring, and a pair of current electrodes and a pair of measurement electricity are respectively equipped with snap ring Power supply electricity arranged in a crossed manner in a current electrode and a measuring electrode, lower half annulus is respectively arranged in pole, upper half annulus Pole and a measuring electrode, adjacent current electrode and measuring electrode are connected by wire, and current electrode is connected with the first power supply, The measuring electrode on snap ring top is connected with single-chip microcomputer, and the measuring electrode of snap ring bottom is connected with signal amplifier, signal amplifier Single-chip microcomputer is connected, single-chip microcomputer is connected with PC computers, and signal amplifier, single-chip microcomputer and PC computers are connected with second source, Said elements are connected by wire.
In said apparatus, altogether provided with four electrodes in the circular open snap ring, four electrode overall lengths account for annulus girth 1/2.
In said apparatus, the position of four fixed electrodes is evenly arranged in the circular open snap ring, is fan-shaped fixation Module, each the corresponding central angle of sector stuck-module is 45 degree.
In said apparatus, the connector is adjusting screw rod, and snap ring edge is provided with the aluminum alloy sheet with screw, adjusting screw rod It is connected with snap ring.
In said apparatus, the single-chip microcomputer selects ISO from 8031 single-chip microcomputers in MSC-51 series, signal amplifier EM A-P-O series, signal adapter selects analog-digital converter.
The invention provides a kind of method for monitoring paste filling pipe, comprise the following steps:
(1)According to symmetry, at the symmetric position that four electrodes are separately fixed in circular open snap ring, and electrode is connected Connect;(2)Connect device for measuring polarizability:Adjacent current electrode and measuring electrode are connected by wire, current electrode and One power supply is connected, and the measuring electrode on snap ring top is connected with single-chip microcomputer, and the measuring electrode of snap ring bottom is connected with signal amplifier, Signal amplifier connects single-chip microcomputer, and single-chip microcomputer is connected with PC computers, and signal amplifier, single-chip microcomputer and PC computers are with second Power supply is connected;
(3)Mounted circular open snap ring is arranged on the outside of paste filling pipe to be measured, fastened by adjusting screw rod;Root According to demand, multiple snap ring monitoring points are arranged on a filling pipeline;By setting multiple circular open snap rings to can be achieved;
The polarizability arranged at multiple monitoring point monitoring diverse locations is easy to note abnormalities in time;
(4)When filling starts, the first power supply of closure is charged for current electrode, and the first power supply is disconnected after a period of time, now, power supply Electrode starts to power for measuring electrode, closes second source, starts each electric elements, and measuring electrode can measure slurry in pipeline Polarizability, transmit a signal to single-chip microcomputer after amplifying by signal amplifier, transmitted a signal to after being handled through single-chip microcomputer PC meter Calculation machine, draws the signal magnitude of different location on pipeline on computers, according to abnormal signal between two measurement points, so as to judge Whether there is plugging between 2 points;When plugging occurs in certain segment pipe, polarizability herein can increase, so as to just can be accurately positioned Plugging position.
Beneficial effects of the present invention:
The plugging monitoring device that the present invention is provided is simple in construction, and with low cost, easy disassembly, monitoring device is arranged in outside pipeline, Compared with those are arranged in the device in pipeline, the on the one hand abrasion and destruction without slurry to device, service life is long, saves Cost;On the other hand, slotted collar is simple in construction, beneficial to dismounting, installs and manufacture.
Brief description of the drawings
Fig. 1 monitors the structural representation of the device of paste filling pipe for the present invention;
Fig. 2 is the profile of round clasp in Fig. 1;
In figure, 1 is the first power supply, and 2 be current electrode, and 3 be measuring electrode, and 4 be circular open snap ring, and 5 be single-chip microcomputer, and 6 be letter Number amplifier, 7 be PC computers, and 8 be second source, and 9 be adjusting screw rod, and 10 be wire.
Embodiment
The present invention is further illustrated below by embodiment, but is not limited to following examples.
Embodiment 1:
As shown in Figure 1 and 2, a kind of device for monitoring paste filling pipe, including circular open snap ring 4, device for measuring polarizability;
The circular open snap ring 4 is the position that four fixed electrodes are disposed with the adjustable hollow ring of opening, annulus, institute The position that four fixed electrodes are evenly arranged in circular open snap ring is stated, is fan-shaped stuck-module, each sector stuck-module Corresponding central angle is 45 degree.Connector is provided with the opening of circular open snap ring, the snap ring is fixed on to be measured by connector Paste filling pipe on the outside of;The connector is adjusting screw rod 9, and snap ring edge is provided with the aluminum alloy sheet with screw, adjusts spiral shell Bar is connected with snap ring.
The device for measuring polarizability includes current electrode 2, measuring electrode 3, power supply, signal amplifier 6, the and of single-chip microcomputer 5 PC computers 7;Current electrode 2 and measuring electrode 3 are arranged in circular open snap ring 4, and a pair of power supplies electricity is respectively equipped with snap ring It is respectively arranged in pole 2 and a pair of measuring electrodes 3, upper half annulus in a current electrode 2 and a measuring electrode 3, lower half annulus A current electrode 2 arranged in a crossed manner and a measuring electrode 3, adjacent current electrode 2 and measuring electrode 3 are connected by wire 10 Connect, current electrode 2 is connected with the first power supply 1, the measuring electrode 3 on snap ring top is connected with single-chip microcomputer 5, the measurement electricity of snap ring bottom Pole 3 is connected with signal amplifier 6, and the connection single-chip microcomputer 5 of signal amplifier 6, single-chip microcomputer 5 is connected with PC computers 7, signal amplifier 6th, single-chip microcomputer 8 and PC computers 7 are connected with second source 8, and said elements are connected by wire.
In said apparatus, altogether provided with four electrodes in the circular open snap ring 4, four electrode overall lengths account for annulus girth 1/2.
The single-chip microcomputer 5 selects ISO EM A-P-O systems from 8031 single-chip microcomputers in MSC-51 series, signal amplifier Row, signal adapter selects analog-digital converter.
The specific monitoring method of monitoring device of the present invention comprises the following steps:
(1)Current electrode 2, measuring electrode 3 are fixed in circular open snap ring 4 at defined symmetric position respectively, by circle Slotted collar 4 is enclosed in pipe under test, is fastened by adjusting screw rod;
(2)Connect device for measuring polarizability:Current electrode 2 is connected with the first power supply 1, and the Top electrode of measuring electrode 3 connects with single-chip microcomputer 5 Connect, bottom electrode and the arrival end of signal amplifier 6 are connected, the port of export of signal amplifier 6 is connected with the arrival end of single-chip microcomputer 5, single-chip microcomputer 5 Port of export connection is connected with PC computers 7, and signal amplifier 6, single-chip microcomputer 5 and PC computers 7 are connected with power supply 8;
(3)According to actual experiment demand, multiple monitoring points are arranged in pipe under test;A snap ring is fixed in each monitoring point, blocks Electrode is had been laid out in ring;The polarizability arranged at multiple monitoring point monitoring diverse locations is easy to note abnormalities in time;
(4)When filling starts, the first power supply 1 of closure is charged for current electrode, and the first power supply 1 is disconnected after a period of time, now, is supplied Electrode 2 starts to power for measuring electrode 3, closes second source 8, starts each electrical appliance, and measuring electrode 3 can be measured in pipeline The polarizability of slurry, single-chip microcomputer 5 is transmitted a signal to after amplifying by signal amplifier 6, and signal is transmitted after being handled through single-chip microcomputer 5 To PC computers 7, the signal magnitude of different measurement points on pipeline just can be seen on PC computers 7, believe according between two measurement points Number exception, so as to whether plugging occur between judging at 2 points.When plugging occurs in certain segment pipe, polarizability herein can increase Greatly, so that plugging position just can be accurately positioned.

Claims (6)

1. a kind of device for monitoring paste filling pipe, it is characterised in that:Including circular open snap ring, device for measuring polarizability;
The circular open snap ring is the position that fixed electrode is evenly arranged in the adjustable hollow ring of opening, annulus, circle Connector is provided with the opening of shape slotted collar, the snap ring is fixed on by connector on the outside of paste filling pipe to be measured;
The device for measuring polarizability includes current electrode, measuring electrode, power supply, signal amplifier, single-chip microcomputer and PC computers; Current electrode and measuring electrode are arranged in circular open snap ring, and a pair of current electrodes and a pair of measurement electricity are respectively equipped with snap ring Power supply electricity arranged in a crossed manner in a current electrode and a measuring electrode, lower half annulus is respectively arranged in pole, upper half annulus Pole and a measuring electrode, adjacent current electrode and measuring electrode are connected by wire, and current electrode is connected with the first power supply, The measuring electrode on snap ring top is connected with single-chip microcomputer, and the measuring electrode of snap ring bottom is connected with signal amplifier, signal amplifier Single-chip microcomputer is connected, single-chip microcomputer is connected with PC computers, and signal amplifier, single-chip microcomputer and PC computers are connected with second source, Said elements are connected by wire.
2. the device of monitoring paste filling pipe according to claim 1, it is characterised in that:In the circular open snap ring Altogether provided with four electrodes, four electrode overall lengths account for the 1/2 of annulus girth.
3. the device of monitoring paste filling pipe according to claim 1, it is characterised in that:In the circular open snap ring The position of four fixed electrodes is evenly arranged, is fan-shaped stuck-module, each the corresponding central angle of sector stuck-module is 45 Degree.
4. the device of monitoring paste filling pipe according to claim 1, it is characterised in that:The connector is regulation spiral shell Bar, snap ring edge is provided with the aluminum alloy sheet with screw, and adjusting screw rod is connected with snap ring.
5. the device of monitoring paste filling pipe according to claim 1, it is characterised in that:The single-chip microcomputer selects MSC- 8031 single-chip microcomputers in 51 series, signal amplifier selects analog-digital converter from ISO EM A-P-O series, signal adapter.
6. a kind of method for monitoring paste filling pipe, using the monitoring paste filling pipe described in any one of claim 1 ~ 5 Device, it is characterised in that:Comprise the following steps:
(1)According to symmetry, at the symmetric position that four electrodes are separately fixed in circular open snap ring, and electrode is connected Connect;(2)Connect device for measuring polarizability:Adjacent current electrode and measuring electrode are connected by wire, current electrode and One power supply is connected, and the measuring electrode on snap ring top is connected with single-chip microcomputer, and the measuring electrode of snap ring bottom is connected with signal amplifier, Signal amplifier connects single-chip microcomputer, and single-chip microcomputer is connected with PC computers, and signal amplifier, single-chip microcomputer and PC computers are with second Power supply is connected;
(3)Mounted circular open snap ring is arranged on the outside of paste filling pipe to be measured, fastened by adjusting screw rod;Root According to demand, multiple snap ring monitoring points are arranged on a filling pipeline;The polarization arranged at multiple monitoring point monitoring diverse locations Rate is easy to note abnormalities in time;
(4)When filling starts, the first power supply of closure is charged for current electrode, and the first power supply is disconnected after a period of time, now, power supply Electrode starts to power for measuring electrode, closes second source, starts each element, and measuring electrode can measure the pole of slurry in pipeline Rate, single-chip microcomputer is transmitted a signal to after amplifying by signal amplifier, and PC computers are transmitted a signal to after being handled through single-chip microcomputer, The signal magnitude of different location on pipeline is drawn on computers, according to abnormal signal between two measurement points, so as to judge at 2 points Between whether there is plugging;When plugging occurs in certain segment pipe, polarizability herein can increase, so that plugging just can be accurately positioned Position.
CN201710175467.3A 2017-03-22 2017-03-22 device and method for monitoring paste filling pipeline Active CN107064227B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710175467.3A CN107064227B (en) 2017-03-22 2017-03-22 device and method for monitoring paste filling pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710175467.3A CN107064227B (en) 2017-03-22 2017-03-22 device and method for monitoring paste filling pipeline

Publications (2)

Publication Number Publication Date
CN107064227A true CN107064227A (en) 2017-08-18
CN107064227B CN107064227B (en) 2020-01-31

Family

ID=59620162

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710175467.3A Active CN107064227B (en) 2017-03-22 2017-03-22 device and method for monitoring paste filling pipeline

Country Status (1)

Country Link
CN (1) CN107064227B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109298025A (en) * 2018-08-28 2019-02-01 太原理工大学 The experimental rig and method of paste body filling slurry isolation in a kind of monitoring pipeline

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0444703B1 (en) * 1990-03-02 1996-06-05 Hitachi, Ltd. Polarizers, a method for producing the same and liquid crystal display devices
EP0786673A2 (en) * 1992-07-31 1997-07-30 Eugesol Method and apparatus for probing and inspecting an underground volume
JP2003020274A (en) * 2001-07-09 2003-01-24 Murata Mfg Co Ltd Piezoelectric paste, and piezoelectric film and piezoelectric parts using the same
JP2004251732A (en) * 2003-02-19 2004-09-09 Seiko Epson Corp Molecular polarizability estimation method and molecular polarizability simulation device
US20070156342A1 (en) * 2003-03-07 2007-07-05 7Tm Pharma A/S Pseudo-sequence method for comparing 7tm receptors with respect to the physico-chemical properties of their binding sites
CN101000379A (en) * 2007-01-26 2007-07-18 北京奥地探测仪器公司 Method and device for high density detecting polarizability using metal electrode
CN101021505A (en) * 2006-02-14 2007-08-22 梅特勒-托利多公开股份有限公司 Measuring device, measuring probe and method for operating the measuring device
CN103018285A (en) * 2013-01-06 2013-04-03 浙江大学 Non-contact type conductive measurement device and method for phase content of gas-liquid two-phase flow
CN103454017A (en) * 2012-09-27 2013-12-18 飞翼股份有限公司 Pipe blocking detecting device of pressure adjustable type paste filling pipelines
CN103728371A (en) * 2014-01-18 2014-04-16 河北联合大学 Mine filling slurry parameter detection method and monitoring device
CN204330664U (en) * 2014-12-28 2015-05-13 武汉理工大学 Concentration of hydraulic mixture capacitive measuring device in pipeline
CN106093131A (en) * 2016-06-16 2016-11-09 太原理工大学 A kind of paste filling pipe plugging monitoring device and method

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0444703B1 (en) * 1990-03-02 1996-06-05 Hitachi, Ltd. Polarizers, a method for producing the same and liquid crystal display devices
EP0786673A2 (en) * 1992-07-31 1997-07-30 Eugesol Method and apparatus for probing and inspecting an underground volume
JP2003020274A (en) * 2001-07-09 2003-01-24 Murata Mfg Co Ltd Piezoelectric paste, and piezoelectric film and piezoelectric parts using the same
JP2004251732A (en) * 2003-02-19 2004-09-09 Seiko Epson Corp Molecular polarizability estimation method and molecular polarizability simulation device
US20070156342A1 (en) * 2003-03-07 2007-07-05 7Tm Pharma A/S Pseudo-sequence method for comparing 7tm receptors with respect to the physico-chemical properties of their binding sites
CN101021505A (en) * 2006-02-14 2007-08-22 梅特勒-托利多公开股份有限公司 Measuring device, measuring probe and method for operating the measuring device
CN101000379A (en) * 2007-01-26 2007-07-18 北京奥地探测仪器公司 Method and device for high density detecting polarizability using metal electrode
CN103454017A (en) * 2012-09-27 2013-12-18 飞翼股份有限公司 Pipe blocking detecting device of pressure adjustable type paste filling pipelines
CN103018285A (en) * 2013-01-06 2013-04-03 浙江大学 Non-contact type conductive measurement device and method for phase content of gas-liquid two-phase flow
CN103728371A (en) * 2014-01-18 2014-04-16 河北联合大学 Mine filling slurry parameter detection method and monitoring device
CN204330664U (en) * 2014-12-28 2015-05-13 武汉理工大学 Concentration of hydraulic mixture capacitive measuring device in pipeline
CN106093131A (en) * 2016-06-16 2016-11-09 太原理工大学 A kind of paste filling pipe plugging monitoring device and method

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
VICTOR VACQUIER等: "《PROSPECTING FOR GROUND WATER BY INDUCED ELECTRICAL POLARIZATION》", 《GEOPHYSICS》 *
井庆贺等: "《煤矿膏体充填管路压力监测系统的开发应用》", 《煤炭科技》 *
刘永东等: "《高密度极化率测量方法的应用效果》", 《工程地质学报》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109298025A (en) * 2018-08-28 2019-02-01 太原理工大学 The experimental rig and method of paste body filling slurry isolation in a kind of monitoring pipeline
CN109298025B (en) * 2018-08-28 2021-03-05 太原理工大学 Test device and method for monitoring segregation of paste filling slurry in pipeline

Also Published As

Publication number Publication date
CN107064227B (en) 2020-01-31

Similar Documents

Publication Publication Date Title
CN103216266B (en) Prevent the pressure detection method of filling pipeline blockage
CN102493827B (en) Automatic coal caving system on top coal caving working face and coal caving method thereof
CN106093131A (en) A kind of paste filling pipe plugging monitoring device and method
CN101532897B (en) Long distance slurry pipeline transportation pressure detection system and detection method
CN102183330A (en) Device and method for monitoring tensioning states of scraper conveyor chains
CN107064227A (en) A kind of device and method for monitoring paste filling pipe
CN206095484U (en) Rock pressure detection device
CN208075790U (en) A kind of Novel tunnel convergent deformation continuous measuring device
CN106969263A (en) Lotion ore slurry pipeline is along journey transporting resistance dynamic correcting method
CN104502628A (en) Method and device for handheld ultrasonic measurement of channel flow speed
CN102249153B (en) Device for detecting rotating angle, control method thereof and crane comprising same
CN205644892U (en) Underground works safe risk perceptual arrangement that is under construction based on BIM
CN203011358U (en) Pressure-type height detection system for hydraulic support
CN204613764U (en) A kind of portable filling flow automatic control box
CN106931870A (en) A kind of the middle pan of scraper conveyor wear detector and method
CN208125558U (en) A kind of filling slurry rheological parameter measurement device
CN207393244U (en) A kind of automatic water supplement mine explosion-suppression fluid barrier
CN105366583B (en) Intelligent jack device based on wireless communication
CN201397213Y (en) Long-distance slurry conduit conveying pressure check-out system
CN105351003B (en) Scrapper conveyor horizontal motion angle measuring system and method
CN204535895U (en) Anchor pole or anchor cable strain gauge
CN203049619U (en) Intelligent inspection well
CN204419261U (en) A kind of pressure monitor system of Paste Backfilling With Piping
CN206132720U (en) Concentration profile monitoring devices in storehouse
CN204436761U (en) A kind of fracturing pump plug shift detector based on infrared senor

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant