CN202673641U - Fully mechanized coal face emulsified liquid remote monitoring and control system - Google Patents
Fully mechanized coal face emulsified liquid remote monitoring and control system Download PDFInfo
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- CN202673641U CN202673641U CN 201220262284 CN201220262284U CN202673641U CN 202673641 U CN202673641 U CN 202673641U CN 201220262284 CN201220262284 CN 201220262284 CN 201220262284 U CN201220262284 U CN 201220262284U CN 202673641 U CN202673641 U CN 202673641U
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Abstract
The utility model relates to a fully mechanized coal face emulsified liquid remote monitoring and control system, which comprises a single chip, a stop valve, a reducing valve, an electromagnetic valve, a turbine flowmeter, a flow switch, a metering pump, a liquid level sensor, an emulsification oil tank, a stirrer, a concentration sensor, a pressure sensor and a temperature sensor; and the fully mechanized coal face emulsified liquid remote monitoring and control system can carry out on-line monitoring on the working state of emulsified liquid of a whole hydraulic system and automatic matching of concentration, so as to ensure the normal work of the system. The utility model has the benefits as follows: the fully mechanized coal face emulsified liquid remote monitoring and control system realizes on-line detection and automatic matching of concentration of the emulsified liquid, and provides operation parameters for an intelligent emulsified liquid pump station through automatically detecting temperature values of a pressure signal of a main pipeline of the hydraulic system and bearings at two ends of a crankshaft of an emulsified liquid pump, so as to achieve the purpose of intelligent control of the pump station.
Description
Technical field
The utility model relates to a kind of detection control system, refers more particularly to a kind of fully mechanized mining face emulsified liquid remote monitoring and controlling system.
Background technique
At present, domestic and international most of collieries are also relatively backward to the real-time detection means of concentration, temperature, pressure, liquid level and the leakage of fully mechanized mining face hydraulic system emulsified liquid, mostly adopt traditional detection means.As everyone knows, emulsified liquid is the driving medium of hydraulic system, the percentage of oil emulsion in the emulsified liquid, and namely the concentration of emulsified liquid is to estimate an important indicator of emulsified liquid performance.The concentration of " safety regulations in coal mine " regulation emulsified liquid is generally 3%～5%(mass fraction), whether concentration of emulsion used is suitable, directly has influence on life-span and the cost of production of hydraulic support, hydraulic prop and other hydraulic element.Concentration is excessively low, and hydraulic element will be subject to the direct erosion of water and get rusty, and cause component failure, thereby shortens service life of equipment; Excessive concentration can make the consumption of oil emulsion increase, thereby cause cost of production to rise.Therefore, the automatic detection of realization concentration of emulsion used and proportioning prolong its working life, and it are particularly important to reduce production costs to protection hydraulic system element.But concentration of emulsion used also adopts breakdown of emulsion method and refractometer detection method, and detecting method all need manual sampling with the range estimation reading, measuring accuracy is not high, traditional detection means mainly comprises: breakdown of emulsion method and refractometer detection method.It is to add demulsifier in the emulsified liquid sample (demulsifier is a kind of surface active substance that the breakdown of emulsion method detects, it can make the liquid structure of emulsified liquid destroy, to reach each component separating purpose out in the emulsified liquid), utilize its chemical action that the You Heshui in the oil-water mixture of emulsification shape is separated, thereby obtain the ratio value of oily in the emulsified liquid and water, calculate its concentration value.It is according to refraction law that refractometry detects, and can reflect at the interface when light enters into another kind of medium from a kind of medium, and the concentration of medium is different, and light velocity of propagation therein is different, and refractive index is also just different.Principle is made the refractive power densitometer accordingly, and light enters emulsified liquid through prism, and can be observed from eyepiece has bright-dark cut in the visual field, and these marginal different scales demonstrate the variable concentrations value of liquid.Refractive power concentration commonly used is in respect of differential type automatic folding optical concentration meter, full emission-type automatic folding optical concentration meter, portable refractometer and refractive power electricity liquid meter.Be used in the coal production detecting concentration of emulsion used the most frequently used be the refractive power saccharometer, belong to the Portable concentration meter.Saccharometer generally is hand-held, represents concentration with mass fraction, and the refractive index that is based on sugary soln is proportional to the principle design of concentration.
At present, used emulsion ratio method mainly contains following 3 kinds in the production of China's coal-mine enterprise practical:
(1) artificial matching method, artificial proportioning are to adopt the mode of pouring into oil emulsion in the pump box by the pump box observation panel to carry out.The shortcoming of the method is: by manual sampling and range estimation reading, thereby precision is low, and matched proportion density is difficult to control; The sampling stand-by period is long, can not realize online detection.In addition, frequent operation, turbidity test are poor, cost is high and labor intensity is large.At present, this method oneself seldom use.
(2) mechanical matching method, mechanical proportioning are to utilize emulsified solution proportioner to carry out proportioning, and this proportioner is according to the Venturi tube principle design.The advantage of the method is: when stable water pressure, out concentration of emulsion used of configuration is more constant, simple to operate, need not other power sources, and has avoided the instantaneous non-constant of matched proportion density that continuity that oil emulsion spreads in water causes.Shortcoming is: the adjusting of proportioning and the break-make of water valve are all leaned on manual operation, thereby very inconvenient.In addition, when hydraulic pressure was unstable, matched proportion density also was difficult to control.
(3) automatic mixing method, automatic mixing are to be come the variation of detectable concentration and liquid level by sensor, and are treated to control signal through microelectronic circuit, again by control circuit control service pump filling oil emulsion or water.The method is comparatively advanced, and shortcoming is that oil emulsion and water mix in pump box, and concentration of emulsion used is long diffusion time, adds water, refueling time is wayward, thereby causes matched proportion density instantaneous non-constant; Other complex structure, cost is higher.
Therefore adopt advanced sensing detection and Computer Control Technology, the concentration of emulsified liquid detected and proportioning to combine online detection and the automatic mixing of realizing concentration of emulsion used be an urgent demand of colliery high-yield and high-efficiency and safety in production, meet the development trend of Modern Pit production technology.
The working condition of emulsion pump crankshaft two end place bearing has directly determined the working condition of bent axle, if operating ambient temperature has surpassed the temperature upper limit that itself can bear, will shorten its working life.Emulsion power pack is the key equipment of coal mine operation, it is undertaken to coal mine fully-mechanized mining working hydraulic support or conventional face hydraulic prop conveying high-pressure emulsified liquid, it is the power source of hydraulic support, the quality of its working state directly affects service behaviour and the using effect of hydraulic support, simultaneously the Security of underground work is played vital effect.
The hydraulic support of fully mechanized mining face why can roof supporting, and can realize that pushing and sliding move frame, adjust retaining wall, side is protected anti-downly, anti-skidding, all is that the pressured fluid that emulsion pump is supplied with is the result of various oil hydraulic cylinders and jack action.In addition at some fully mechanized mining face, the fixing and advancing jack of the tight chain oil hydraulic motor of flexible flightconveyor, bridge conveyor and the hydraulic prop that the upper and lower outlet port of working surface advance support is used etc. all is the high-pressure emulsion work that provides by emulsion pump.Along with the work hauling speed of coal mining machine in full-mechanized mining face improves constantly, the propelling of hydraulic support (or follow-up) speed must corresponding improve, just can give full play to the ability to work of coal winning machine.Hydraulic support is that pressured fluid by the emulsion power pack supply promotes various oil hydraulic cylinders and finishes in the actions such as " ascending, descendings, push away, move " of follow-up process, the flow quantity that supplies of emulsion power pack is determining the follow-up speed of support, for large mining height, great tonnage hydraulic support, in the situation that many mobile simultaneously, need augmented flow, the quick follow-up of guarantee support, maintenance work face top board complete, guarantee production safety, therefore more and more higher to the requirement of emulsion power pack.
What the solution hydraulic support followed up most critical fast is the liquid supply rate that will increase hydraulic support, although can satisfy large flow feed flow by the power that improves emulsion pump, but because coal mine operation space and safe restriction only rely on and adopt high-capacity pump to solve fast very difficult realization of method of the required flow of follow-up of hydraulic support.This shows, the working state of cooperation monitoring emulsified liquid, the system of the automatic monitoring of the intelligence of development high pressure, development, exploitation emulsion power pack and the functions such as fault self-diagnosis, the automatic processing of fault is significant to coal mining.Automatic detection and the matching system of exploitation fully mechanized mining face concentration of emulsion used are very necessary.
The model utility content
The purpose of this utility model provides a kind of fully mechanized mining face emulsified liquid remote monitoring and controlling system, to overcome the deficiency of the above-mentioned aspect of existing product.
The purpose of this utility model is to be achieved through the following technical solutions:
The described a kind of fully mechanized mining face emulsified liquid remote monitoring and controlling system of the utility model embodiment, comprise intake pipe, emulsion tank, single-chip microcomputer, mixer filter, emulsion box and emulsion pump, emulsion tank is connected with mixer filter by being connected pipeline with flow switch with metering pump, mixer filter is connected with emulsion box by pipeline, emulsion box is connected with emulsion pump by pipeline, emulsion pump flows out pipeline and uses the liquid equipment connection by emulsion, described intake pipe is provided with stop valve, turbine flowmeter, reduction valve and solenoid valve, be provided with liquid level sensor one in the described emulsion tank, be provided with liquid level sensor two in the described emulsion box, concentration sensor and stirrer, described emulsion pump is provided with temperature transducer, described emulsion flows out pipeline and is provided with some pressure transducers, described reduction valve, solenoid valve, liquid level sensor one, liquid level sensor two, concentration sensor, temperature transducer, pressure transducer is connected with single-chip microcomputer respectively, described metering pump is connected with frequency variator, frequency variator is connected with single-chip microcomputer, and single-chip microcomputer is connected with control system.
The beneficial effects of the utility model are: the utility model has been realized online detection and the automatic mixing of concentration of emulsion used, and by automatically detecting the temperature value of hydraulic system main line pressure signal and emulsion pump crankshaft two end place bearing, Operational Limits is provided for intelligent emulsion power pack, reaches the purpose of pumping plant intelligent control.
Description of drawings
The below is described in further detail the utility model with reference to the accompanying drawings.
Fig. 1 is the structural representation of the described a kind of fully mechanized mining face emulsified liquid remote monitoring and controlling system of the utility model embodiment.
Among the figure:
1, intake pipe; 2, stop valve; 3, reduction valve; 4, solenoid valve; 5, turbine flowmeter; 6, mixer filter; 7, single-chip microcomputer; 8, flow switch; 9, frequency variator; 10, metering pump; 11, stirrer; 12, liquid level sensor two; 13, liquid level sensor one; 14, emulsion tank; 15, concentration sensor; 16, emulsion box; 17, emulsion pump; 18, temperature transducer; 19, pressure transducer; 20, emulsion flows out pipeline; 21, use liquid equipment.
Embodiment
As shown in Figure 1, the described a kind of fully mechanized mining face emulsified liquid remote monitoring and controlling system of the utility model embodiment, comprise intake pipe 1, emulsion tank 14, single-chip microcomputer 7, mixer filter 6, emulsion box 16 and emulsion pump 17, emulsion tank 14 is connected with mixer filter 6 by the pipeline of being connected with flow switch with metering pump 10, mixer filter 6 is connected with emulsion box 16 by pipeline, emulsion box 16 is connected with emulsion pump 17 by pipeline, emulsion pump 17 flows out pipeline 20 and is connected with liquid equipment 21 by emulsion, described intake pipe 1 is provided with stop valve 2, reduction valve 3, solenoid valve 4 and turbine flowmeter 5, be provided with liquid level sensor 1 in the described emulsion tank 14, be provided with liquid level sensor 2 12 in the described emulsion box 16, concentration sensor 15 and stirrer 11, described emulsion pump 17 is provided with temperature transducer 18, described emulsion flows out pipeline 20 and is provided with some pressure transducers 19, described reduction valve 3, solenoid valve 4, liquid level sensor 1, liquid level sensor 2 12, concentration sensor 15, temperature transducer 18, pressure transducer 19 is connected with single-chip microcomputer 7 respectively, described metering pump 10 is connected with frequency variator 9, frequency variator 9 is connected with single-chip microcomputer 7, and single-chip microcomputer 7 is connected with control system.
During concrete the use, Emulation Concentration in Coal Mine monitoring device is the equipment that the various sensor signals of installing in the emulsion pump system are gathered, analyze and process, the operating mode of real-time watch device, and send the data that gather to dispatching control center, then carry out corresponding control operation according to the guidance command that receives.
Oil emulsion from emulsion tank 14 through metering pump 10, flow switch 8 to mixer filter 6, and mix from the clear water of water supply pipe, mixed emulsified liquid flows to emulsion box 16.Turbine flowmeter 5 is used for detecting the flow of clear water, and regulates inflow with solenoid valve 4.14 li of emulsion tanks have been installed the liquid level that liquid level sensor 1 detects oil emulsion.Mixed emulsified liquid fully mixes by stirrer 11 16 li of emulsion box.16 li of emulsion box concentration sensor 15 is housed, this sensor is a complete SCM system, has temperature detection and compensate function, is used for detecting the emulsified liquid degree for preparing.
The flow of oil emulsion is controlled and regulated to the rotating speed that Emulation Concentration in Coal Mine monitoring device is regulated motors of metering pumps by frequency variator 9, thereby consist of a closed loop control system, makes mixed concentration of emulsion used reach setting value.16 li of emulsion box liquid level sensor 2 12 is housed also, is used for measuring the rear novel emulsion liquid of emulsified liquid take process control machine as control core of preparation and automatically detects and matching system.This system can not only realize the online detection of concentration of emulsion used, and can realize simultaneously the automatic mixing of concentration of emulsion used.
Inside and outside emulsion power pack system high pressure liquid delivery outlet end, with liquid equipment end setting pressure sensor 19 respectively, the pressure signal of hydraulic system emulsified liquid is gathered, and be connected to single-chip microcomputer 7 signal processing units.Pressure transducer 19 by high-voltage output end is installed obtains the temporal evolution pressure diagram different with working condition.Under normal circumstances, when pumping plant during to the equipment feed flow pressure be the precipitous decline of elder generation, the process that then slowly improves; And when leaking, oil pressure has fluctuation and pressure drop by a relatively large margin, and curve is all the time brokenly fluctuation or descend then.Utilize the correlation technique of pattern recognition, in single-chip microcomputer processing unit and remote monitoring computer, carry out simultaneously program and calculate, carry out on-the-spot control by single-chip microcomputer 7, when leakage, carry out acoustooptic alarm; Shown and record by remote computer, and these curves are carried out intelligent method identification, judge and record out the current working state of liquid-supplying system, accumulation pumping plant job information is for from now on maintenance, debugging provides foundation.Such duplicate protection mechanism work safety and reliability.
The working condition of emulsion pump crankshaft two end place bearing has directly determined the working condition of bent axle, if operating ambient temperature has surpassed the temperature upper limit that itself can bear, will shorten its working life.Bearing working place temperature monitoring early warning system mainly comprises temperature transducer and singlechip data processing unit.Temperature transducer 18 is installed on emulsion pump crankshaft two end bearing working place, detects in real time the ambient temperature of crankshaft two end bearing working in the working procedure, and is transferred to singlechip data processing unit.Singlechip data processing unit compares according to the temperature value that receives and default temperature value, if be lower than the setting value of temperature, then proceeds monitoring and judgement; If be higher than setting value, then send the high temperature alarm signal, in order in time process.
In pumping plant, adopt four emulsion pump feed flows to replace large flow list pump or the double pump feed flow form that generally adopts now; The running state of each pump is adjusted in the variation of required emulsified liquid flow when utilizing the variation reflection hydraulic support follow-up of hydraulic system main line pressure signal by the main line pressure signal that collects; In the running of pumping plant, adopt the priority endless form, avoided each emulsion pump different working time; Simultaneously, for fear of emulsion pump 17 operation of breaking down in spite of illness, designed the On-line Fault supervisory system, the various fault Realtime Alerts that pumping plant is occurred in running are also taked corresponding control measure.In the control system of pumping plant, consist of the master-salve station collecting and distributing control system by programmable controller, whole control system is carried out centralized control by main station controller, is managed accordingly by each substation; Main station controller is according to the variation of main line pressure and the running state of current each slave station, by the priority orders of setting in the program, to sending the load or unload control command from station control accordingly; From the startup of controlling emulsion pump separately after station control receives control command, stop, loading, unloading and malfunction monitoring etc., and then current running state uploaded in the main station controller.Master-salve station is provided with man-machine interface, the runnability that can set relevant parameter and consult each pump by entering machine interface operation personnel.
The utility model is not limited to above-mentioned preferred forms; anyone can draw other various forms of products under enlightenment of the present utility model; no matter but do any variation in its shape or structure; every have identical with a application or akin technological scheme, all drops within the protection domain of the present utility model.
Claims (2)
1. fully mechanized mining face emulsified liquid remote monitoring and controlling system, comprise intake pipe (1), emulsion tank (14), single-chip microcomputer (7), mixer filter (6), emulsion box (16) and emulsion pump (17), emulsion tank (14) is by being connected 8 with metering pump (10) with flow switch) pipeline be connected with mixer filter (6), mixer filter (6) is connected with emulsion box (16) by pipeline, emulsion box (16) is connected with emulsion pump (17) by pipeline, emulsion pump (17) flows out pipeline (20) and is connected with liquid equipment (21) by emulsion, it is characterized in that: described intake pipe (1) is provided with reduction valve (3) and solenoid valve (4), be provided with liquid level sensor one (13) in the described emulsion tank (14), be provided with liquid level sensor two (12) in the described emulsion box (16), concentration sensor (15) and stirrer (11), described emulsion pump (17) is provided with temperature transducer (18), described emulsion flows out pipeline (20) and is provided with some pressure transducers (19), described reduction valve (3), solenoid valve (4), liquid level sensor one (13), liquid level sensor two (12), concentration sensor (15), temperature transducer (18), pressure transducer (19) is connected with single-chip microcomputer (7) respectively, described metering pump (10) is connected with frequency variator (9), frequency variator (9) is connected with single-chip microcomputer (7), and single-chip microcomputer (7) is connected with control system.
2. a kind of fully mechanized mining face emulsified liquid remote detection control system according to claim 1, it is characterized in that: described intake pipe (1) is provided with stop valve (2) and turbine flowmeter (5).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220262284 CN202673641U (en) | 2012-06-05 | 2012-06-05 | Fully mechanized coal face emulsified liquid remote monitoring and control system |
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| CN 201220262284 CN202673641U (en) | 2012-06-05 | 2012-06-05 | Fully mechanized coal face emulsified liquid remote monitoring and control system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422829A (en) * | 2016-08-31 | 2017-02-22 | 山西平阳广日机电有限公司 | Automatic proportioning device for emulsified liquid |
| CN106823876A (en) * | 2017-04-10 | 2017-06-13 | 安徽恒源煤电股份有限公司 | A kind of device for matching somebody with somebody liquid for emulsion |
| CN106881050A (en) * | 2017-04-10 | 2017-06-23 | 安徽恒源煤电股份有限公司 | A kind of exploiting field central liquid supply system |
| CN106894979A (en) * | 2017-03-22 | 2017-06-27 | 中国神华能源股份有限公司 | A kind of emulsion power pack |
| CN106988982A (en) * | 2017-04-10 | 2017-07-28 | 安徽恒源煤电股份有限公司 | A kind of emulsion liquid-feed device |
| CN107450504A (en) * | 2017-09-19 | 2017-12-08 | 齐鲁工业大学 | A kind of stock tank mixing control framework and stock tank stir data handling system |
| CN112412765A (en) * | 2020-11-07 | 2021-02-26 | 山东拓新电气有限公司 | Unmanned intelligent control system for mining emulsion pump station |
| CN113600043A (en) * | 2021-09-13 | 2021-11-05 | 无锡威顺煤矿机械有限公司 | Automatic, accurate emulsion ratio workstation |
-
2012
- 2012-06-05 CN CN 201220262284 patent/CN202673641U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422829A (en) * | 2016-08-31 | 2017-02-22 | 山西平阳广日机电有限公司 | Automatic proportioning device for emulsified liquid |
| CN106894979A (en) * | 2017-03-22 | 2017-06-27 | 中国神华能源股份有限公司 | A kind of emulsion power pack |
| CN106894979B (en) * | 2017-03-22 | 2019-05-24 | 中国神华能源股份有限公司 | A kind of emulsion power pack |
| CN106823876A (en) * | 2017-04-10 | 2017-06-13 | 安徽恒源煤电股份有限公司 | A kind of device for matching somebody with somebody liquid for emulsion |
| CN106881050A (en) * | 2017-04-10 | 2017-06-23 | 安徽恒源煤电股份有限公司 | A kind of exploiting field central liquid supply system |
| CN106988982A (en) * | 2017-04-10 | 2017-07-28 | 安徽恒源煤电股份有限公司 | A kind of emulsion liquid-feed device |
| CN107450504A (en) * | 2017-09-19 | 2017-12-08 | 齐鲁工业大学 | A kind of stock tank mixing control framework and stock tank stir data handling system |
| CN112412765A (en) * | 2020-11-07 | 2021-02-26 | 山东拓新电气有限公司 | Unmanned intelligent control system for mining emulsion pump station |
| CN113600043A (en) * | 2021-09-13 | 2021-11-05 | 无锡威顺煤矿机械有限公司 | Automatic, accurate emulsion ratio workstation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130116 Termination date: 20190605 |