CN2098677U - Measurer for pressure of ore bed - Google Patents

Abstract

The utility model relates to an instrument for measuring and recording the yield of the inner prop and the fluid pressure in the hydraulic cylinder of the branch hiding type hydraulic bracket in the coal mine. The instrument adopts a photoelectric displacement sensor 3, a solid piezoresistance pressure sensor 12 and an audio-frequency sensor 11. Each sensor converts the yield of the inner prop 9, the pressure variation in the bracket hydraulic cylinder and the noise of the coal cutter into the electrical signals to be sent to a portable microcomputer data acquisition unit 1 through the signal processing by a signal processor 2 to carry out the signal processing and the data storage. The displacement sensor of the instrument accomplishes the up and down movement adaptable for the inner prop. Simultaneously, the utility model also has the advantages of modernized operation and data processing.

Description

Measurer for pressure of ore bed

The utility model relates to the instrument that a kind of length metering and hydrodynamic pressure are measured, and specifically, it is a kind of instrument that hydrodynamic pressure in the amount of contracting and the hydraulic cylinder under on the coal mine fully-mechanized mining working the post alive of covering the formula hydraulic support is measured and write down.

The measurement that press in the ore deposit, colliery is divided into the ore deposit, down-hole usually and presses measurement and record and two steps of aboveground data processing.To adopting an ore deposit, down-hole of covering the formula hydraulic support to press and measuring mainly is the following amount of contracting of measurement bracket post alive and the hydrodynamic pressure in the bracket hydraulic cylinder.The ore deposit of covering the formula hydraulic support that has the sixth of the twelve Earthly Branches presses measuring instrument normally to adopt mechanical system to measure and the record measured value, as: the self recording instrument that contracts under the designed YSZ-1 type hydraulic support pressure is exploited in colliery research institute Beijing, it by the displacement sensor that condenses under the mechanical type, mechanical compression sensor, the compositions such as recording mechanism, pressure record mechanism and cydariform recording clock that contract down; Wherein contract down the sensing recording section by one with support live measurement that post is fixed together the live detent of bar, the bar of living, the back-moving spring of the bar of living, with the compositions such as recording pointer that are located on the detent, during measurement, brake lives to measure the bar of living, when under support is lived post, contracting, driving measurement bar alive moves down, simultaneously, the detent that lock lives to measure bar alive also moves down thereupon, it is measured that the recording pointer that is located on the detent is noted on disc chart, and its disc chart is by cydariform recording clock driven rotary.The sensing that contracts under above-mentioned recording section can be possible on the principle, but exist problem in actual measurement, and post is not only to move up and down because support is lived, and often is accompanying rotation motion when moving up and down.And can only be affixed relation between above-mentioned mechanical displacement sensor and the post alive, therefore, it can not adapt to this rotary moving up and down, and in actual measurement, stuck phenomenon usually takes place to measure the bar of living, and the recording section cisco unity malfunction contracts under making.The pressure sensing recording section also is by one four connecting rod enlarger of the pressure-dependent mobile drive of the overcasting staff in the pressure transducer, makes the recording pointer that is connected on the four-bar mechanism make corresponding mobile.Recording pointer is noted the force value curve on disc chart.Record and pressure record principle of work partly contract down as can be seen by above-mentioned.Their recording mode is comparatively original, and limited time of instrument continuous working can only be within 24 hours, for making the instrument continuous working; Will go into the well and change paper to instrument every day, irritates ink, winds up, and makes the data collection task of down-hole be tired of very much rope, it is frequent to go into the well, simultaneously, because the backwardness of instrument recorded downhole mode, also make aboveground data analysis and processing be tired of rope and backwardness, normally manually put in order, time-consuming.Moreover, be unusual significant data at silo shearer by the workplace variation of the amount of contracting and pressure at present, the instrument that has the sixth of the twelve Earthly Branches can not indicate this point.

The purpose of this utility model is to provide a kind of ore deposit pressure measuring instrument that adopts electric measuring method to descend the amount of contracting and pressure survey and carry out data storage with microsystem in order to overcome the shortcoming that technology is arranged the sixth of the twelve Earthly Branches.

Solution of the present utility model is as follows: it has an airtight shell body, the affixed tight loop of support cylinder on the appearance wall of shell body Lower Half.Shell body is installed in the binding site of support post alive and support cylinder by this tight loop.The first half in shell body has been installed a displacement transducer.This displacement transducer has a rotating shaft, the affixed roller of one end of rotating shaft, one section arc length of roller is protruded shell body and is close to support post alive, the affixed grating rotating disk of the other end of rotating shaft, positive and negative both sides at the grating rotating disk are provided with light emitting diode transmitter and photoreceiver, and a solid-state piezoresistance, pressure sensor is installed at certain position in shell body.This sensor joins by high pressure connection and flexible pipe and bracket hydraulic cylinder cavity of resorption.An audio frequency window can be established in a certain position on outer shell walls, and an acoustic frequency sensor is installed in this window place.In shell body, also laying a signal processor and the Portable Microcomputer Data storer that the electric signal of above-mentioned each sensor output is handled.Realize being electrically connected by plug between signal processor and the Portable Microcomputer Data storer.The working power that in Portable Microcomputer Data storer, comprises a rechargeable type.When under support is lived post, contracting.The moving roller of the cornice of living rotates, and roller drives grating by rotating shaft and rotates, and photoreceiver becomes electric impulse signal with the light and shade change transitions of light.Carry out step-by-step counting and data storage through sending into microcomputer after the signal Processing; When pressure changes.Pressure transducer is an electric signal with the pressure change transitions.This signal is through exporting the voltage signal with the pressure linear change after the signal Processing.Give microcomputer and carry out analog to digital conversion and data storage.When coalcutter passed through support, acoustic frequency sensor changed voice signal into electric signal.This signal is through step signal of output after the signal Processing.Sending into microcomputer as the marking signal of noise stores.

Structure by above-mentioned displacement transducer can adapt to support work fully post is revolving and move up and down with live roller that post contact of support as can be seen.Stuck phenomenon can not occur,, make the up-to-dateness of instrumentation improve simultaneously because this instrument has adopted microsystem to carry out data processing and data storage.The staff goes into the well when carrying out data aggregation, only needs Portable microcomputer data acquisition device is taken off.Change new microcomputer data acquisition device, instrument just can work on, and after the design of instrument by the reduction power consumption, can prolong stream time 36 hours, can go into the well once in 2～3 days, has reduced the number of times of going into the well.Simultaneously, make aboveground data processing modernization.After only needing microcomputer data acquisition device and computing machine connected machine, just available computers is carried out data analysis and data processing.

Describe in detail with reference to the accompanying drawings below.

Fig. 1, one-piece construction figure of the present utility model

Fig. 2, the left view of Fig. 1

Fig. 3, the A-A sectional view of displacement transducer among Fig. 1

Fig. 4, displacement transducer and signal Processing electrical schematic diagram thereof

Fig. 5, pressure transducer, noise transducer and signal Processing electrical schematic diagram thereof

Fig. 6, microcomputer data acquisition device electrical schematic diagram

Fig. 7, the synoptic diagram of displacement transducer resilient contact structure

Fig. 8, control signal sequential chart among Fig. 4

Referring to Fig. 1, the Lower Half of described shell body can be the housing 8 of a cupboard shape, its outside affixed two tight loops 7 of embracing support cylinder 10, and described signal processor 2 and Portable microcomputer data acquisition device 1 are laid in inside; The first half of shell body can separate with Lower Half.Connect by slide construction, be used for being suitable for the step between different model support cylinder and the post alive, among the figure, 3 is the roller of displacement transducer, and 9 is support post alive, the 11st, and audio frequency window, 12 positions for the pressure transducer installation.Referring to Fig. 2,4 is pressure transducer, and 5 is the quick high-pressure joint, and 6 is acoustic frequency sensor, and 13 is flexible pipe.

Referring to Fig. 3, the rotating shaft 15 of described displacement transducer is installed on the rotary shaft base 14, and an end of rotating shaft is a roller 3, and the light and dark striped that described grating adopts indentation to equate at interval can adopt a grating rotating disk.Also can adopt a pair of grating to pay, this example adopts the latter, concrete structure is: the other end of rotating shaft is installed a grating 19 by moving grating seat 16, decides grating seat 17 passing on left of grating 19 grating 18 is installed, at the installation groove of deciding also to be provided with on the grating seat 17 light emitting diode.The corresponding photoreceiver 20 of installing on the right side of grating 19.Among the figure, the 21st, the cover of sensor, the 22nd, shell body.

Referring to Fig. 7, for the roller 3 that makes displacement transducer contacts the post 9 of living better.Outer cover 24 bottoms at it are provided with a chute structure 23, are provided with a spring structure 25 at the outer cover rear portion.

Referring to Fig. 4, the signal processor of displacement transducer need be given the distinguishing signal that contracts under the efficient post and rise and represent the count pulse of the amount of contracting down; Four LEDs are installed in the above-mentioned groove of deciding the grating seat among the figure, four photosensitive receiving tube correspondences are installed on the above-mentioned photoreceiver, by operational amplifier 30 and photosensitive receiving tube 31,32 are connected into the reception amplification and rectification circuit, and export one road square-wave signal A from output terminal, as shown in Figure 8, a-signal carries out Integral Processing again through after phase inverter 33 anti-phase, draw the just jumping edge-impulse signal C of a-signal by carrying out logical with door 34 and original a-signal from C point, a-signal passes through above-mentioned same processing draws a-signal from the D point negative jumping edge-impulse signal D; Be connected into the reception amplification and rectification circuit identical by operational amplifier 36 and photosensitive receiving tube 37,38 with A road signal.And export another road square-wave signal B, the control signal of opening the door of signal B right and wrong door 39,40.Adjust the position of latter two light emitting diode, make about the phase phasic difference (π)/2 of A, B two-way square-wave signal with respect to preceding two light emitting diodes.And the phase place that makes signal B when contracting under the post alive is ahead of signal A (π)/2 as shown in Figure 8.At this moment signal C is by Sheffer stroke gate 39 its inversion signal E of output.And the D signal is blocked.Sheffer stroke gate 40 output high level, rest-set flip-flop 42 output high level then, the monumented point signal that the amount of contracting count pulse is down counted to start with.Simultaneously, count pulse E is by door 41 outputs; When the post of living rose, the phase lag of signal B was in signal A (π)/2.Referring to signal B ' among Fig. 8.At this moment, the C signal is blocked.E point output low level.Simultaneously, the D signal is by Sheffer stroke gate 40 its opposite signal F ' of output, the then output terminal zero setting of rest-set flip-flop, the output terminal set of door 41.For explosion-proof.The power switch of this circuit adopts tongue tube door switch 42, is installed on the cabinet door.When door is opened, outage automatically.

Referring to Fig. 5, operational amplifier 50 is connected into a differential amplifier.Pressure transducer 51 is a voltage signal with the pressure linear growth with the pressure change transitions.This signal is given differential amplifier and is amplified, and adjusts amplification quantity by potentiometer 52.Make the voltage of output be suitable for the voltage amplitude of A/D converter; Give the proportional amplifier that is connected into by amplifier 55 amplification by the noise signal that noise transducer 53 is gathered by the coupling of electric capacity 54.Through the filtering output of the detection of wave detector 56 and wave filter 57 d. c. voltage signal with the noise intensity linear growth.Through giving threshold compataror 58 behind the anti-interference delay circuit of RC.When coalcutter passed through, step signal of comparer output was given microcomputer.59 is power circuits among the figure.Wherein for explosion-proof, power switch can adopt tongue tube door switch 60.

Referring to Fig. 6.Microcomputer 61 is worked in an orderly manner by storer 62 program stored.Pressure signal changes digital signal into by A/D converter 63.Under the measuring-signal that contracts read in by microcomputer 61, under control of microcomputer, time signal, noise signal, pressure signal, length signals is stored among the RAM64.Behind the end-of-job, by serial notice mouth the signal among the RAM is delivered to the IBM-PC machine and handle.65 is address latch among the figure.

Claims (3)

1, measuring instrument is pressed in the ore deposit, has an airtight shell body, and the tight loop 7 of affixed support cylinder 10 on the appearance wall of shell body Lower Half makes shell body be installed in the binding site of support post alive and support cylinder by tight loop 7, it is characterized in that:

A, the first half in shell body have been installed a displacement transducer.This displacement transducer has a rotating shaft.The affixed roller 3 of one end of rotating shaft, one section arc length of roller protrude shell body and are close to support post alive, and the affixed grating rotating disk of the other end of rotating shaft is provided with light emitting diode transmitter and photoreceiver in the positive and negative both sides of grating rotating disk.

B, a solid-state piezoresistance, pressure sensor is installed at certain position in shell body, and this sensor joins by high pressure connection and flexible pipe and bracket hydraulic cylinder cavity of resorption.

C, an audio frequency window can be established in a certain position on outer shell walls, and an acoustic frequency sensor is installed in this window place.

D, in shell body, also laying a signal processor 2 and the Portable Microcomputer Data storer 1 that the electric signal of above-mentioned each sensor output is handled, realize being electrically connected by plug between signal processor 2 and the Portable Microcomputer Data storer 1, in Portable Microcomputer Data storer, comprise the working power of a rechargeable type.

2, measuring instrument is pressed in the ore deposit according to claim 1, and it is characterized in that: described displacement transducer is installed in the outer cover 24, and the outer cover bottom is provided with a chute structure 23, is provided with a spring structure 25 at the outer cover rear portion.

3, press measuring instrument as claim 1,2 described ore deposits, it is characterized in that: the power switch of described each sensor and signal processor thereof is one group of dry reed tube door switch.Described shell body is a cabinet structure.The dry reed tube door switch is installed on the cabinet door.

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