CN201885791U - Electronic-scale automatic-regulation device used for coal blending process in coking plant - Google Patents
Electronic-scale automatic-regulation device used for coal blending process in coking plant Download PDFInfo
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- CN201885791U CN201885791U CN2010205487355U CN201020548735U CN201885791U CN 201885791 U CN201885791 U CN 201885791U CN 2010205487355 U CN2010205487355 U CN 2010205487355U CN 201020548735 U CN201020548735 U CN 201020548735U CN 201885791 U CN201885791 U CN 201885791U
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Abstract
The utility model relates to an electronic-scale automatic-regulation device used for coal blending process in a coking plant. The electronic-scale automatic-regulation device belongs to the technical field of electronic industrial metering. The utility model adopts a technical scheme as follows: the electronic-scale automatic-regulation device comprises a weighting sensor connected with two ends of a roller for a belt conveyer, a speed sensor, an automatic-measurement moisture analyzer, an automatic-measurement ash analyzer, a scale support assembly, a millivolt transmitter and amplification-conversion circuit, a display control, a regulator and a frequency converter. The utility model is characterized in that: the automatic-measurement moisture analyzer and the automatic-measurement ash analyzer which are connected with two ends of the roller for the belt conveyor are arranged in parallel in the device. The device has the advantages that: the design is reasonable, the structure is simple, the automatic control and management level is improved during coal blending process and obvious using effects are achieved; and the device can solve the problems such as lagged regulation, lower measuring speed and poorer measuring precision, thereby ensuring the quality of cokes and the stability for coked products.
Description
Technical field
The utility model relates to a kind of electronic scales self-checking device that is used for coke-oven plant's coal blending technology, belongs to the industrial electronic field of measuring techniques.
Background technology
In coal chemical technology, how to realize that two or more single efficient, high precision mixing match of planting coal charge is that the coke-oven plant is concerned about always, also be the technical barrier that each burden balance manufacturer is faced.The coal blending scale that is used for coal blending at present adopts belt conveyer scale mostly, this belt conveyer scale can only detect the quality of coal charge and the calorific value of the moisture of energy measurement coal charge, ash content, fugitive constituent and coal charge not, and its adjustment process relatively lags behind, and measuring speed and measuring accuracy are relatively low.Thereby influence the mixing match of coal charge, influence the output of coke quality and coking chemistry product then.
The utility model content
At above-mentioned deficiency of the prior art, the technical problems to be solved in the utility model provides a kind of electronic scales self-checking device that is used for coke-oven plant's coal blending technology, whole coal blending technological process can be carried out robotization control and management by host computer, it can weigh the quality of coal charge quickly and accurately simultaneously, but also can measure moisture, ash content and the calorific value etc. of coal charge, thereby data are provided for the detection of coal blending ratio.
The technical solution of the utility model is: a kind of electronic scales self-checking device that is used for coke-oven plant's coal blending technology, it is characterized in that it contain the LOAD CELLS 3 that is connected with belt conveyer carrying roller 2 two ends, speed pickup 4, automatically measure moisture meter 6, measure ash content meter 8 automatically, scale frame component 5, millivolt transmitter and amplification change-over circuit B, display controller D, regulator E and frequency converter F, coal blending equipment adopts electro-vibrating feeder and coal blending dish.Be set up in parallel the automatic mensuration moisture meter that is connected with belt conveyer carrying roller 2 two ends 6 in the device and measured ash content meter 8 automatically, LOAD CELLS 3 and speed pickup 4, automatically measure moisture meter 6, measure ash content meter 8 automatically and all be connected with display controller D.
The utility model is reasonable in design, and is simple in structure, improved the robotization control and the management level of coal blending process, result of use is obvious, can solve adjustment process and relatively lag behind, the problem that measuring speed and measuring accuracy are relatively low has guaranteed the stability of coke quality and coking product then.
Description of drawings
Fig. 1 is the utility model electronic scales self-checking device systematic schematic diagram.
Fig. 2 is the utility model electronic scales self-checking device structural plan.
Fig. 3 is the utility model electronic scales self-checking device circuit theory sketch.
Accompanying drawing acceptance of the bid keep the score state as follows: the 1-belt wheel; The 2-carrying roller; The 3-LOAD CELLS; The 4-speed pickup; 5-scale frame component; 6-measures moisture meter automatically; The 7-belt; 8-measures the ash content meter automatically; The 9-batcher; 10-master's belt feeder; 11-coal blending motor; The A-voltage compensator; B-electromagnetic isolation millivolt transmitter; C-proportional integral module; The D-display controller; The E-regulator; The F-frequency converter; G-coal blending scale motor; The H-host computer;
Embodiment
Shown in electronic scales self-checking device systematic schematic diagram in the accompanying drawing 1 coal blending technology: coal charge feeds band conveyor by electro-vibrating feeder or coal blending dish and carries through belt 7, the LOAD CELLS 3 that is connected with belt conveyer carrying roller 2 two ends, speed pickup 4, automatically measure moisture meter 6, automatically measure ash content meter 8 instrument such as electronic scales such as grade coal charge is carried out weight measurement, moisture measurement, ash content and calorific value are measured, electronic scales instrument output millivolt signal, through millivolt transmitter and amplification change-over circuit millivolt signal is converted to 4～20mA normalized current signal, after display controller carries out instantaneous flow and the cumulative amount that the proportional integral computing can show measured value.The number that demonstrates then compares through the regulator computing and with set-point again, the deviation signal that draws is regulated the amplitude of electro-vibrating feeder and the rotating speed of coal blending dish by the change of frequency converter frequency, the change of the amplitude of electro-vibrating feeder and coal blending dish rotating speed, the amount of feeding that can regulate coal charge then.The function of electronic scales measurement coal feed weight and general belt conveyer scale are identical, millivolt transmitter and amplification change-over circuit, display controller, and regulator and frequency converter and prior art are identical.
Accompanying drawing 2 is the utility model electronic scales self-checking device device arrangenent diagram.Belt 7 is enclosed within on the belt wheel 1, and batcher 9 is arranged on the end top of belt 7; LOAD CELLS 3, automatically measure moisture meter 6, automatically measure ash content meter 8 be arranged in carrying roller 2 two ends under and contact speed pickup 4 and the supporting use of LOAD CELLS with carrying roller 3 two ends; 3 scale frame components 5 all are connected with display controller.When coal charge passes through belt 7, LOAD CELLS 3, speed pickup 4, automatically measure moisture meter 6, measure ash content meter 8 automatically and work alone simultaneously, and the signal that will gather is separately delivered to millivolt variator and signal amplification circuit is converted to the normalized current signal, carries out can demonstrating after the proportional integral computing instantaneous flow and the semi-invariant of measured value then by display controller.Whole coal blending technological process can be carried out robotization control and management by host computer.All the electronic scales with prior art is identical for principle of work, the compute mode of the timing sampling mode of electronic scales of the present utility model, measurement passage.Different is that the utility model has increased automatic mensuration moisture meter and measured the ash content meter automatically, and whole coal blending technological process can be carried out robotization control and management by host computer, it can weigh the quality of coal charge quickly and accurately, but also can measure moisture, ash content and the calorific value etc. of coal charge, thereby provide data for the detection of coal blending ratio.
Accompanying drawing 3 is the utility model electronic scales self-checking device circuit theory sketch.Sensor on LOAD CELLS, the auto moisture mensuration meter and the sensor of measuring automatically on the ash content meter all are connected into amplifying circuit of its output terminal connection of bridge diagram, amplifying circuit is made up of differential amplifier circuit and output amplifier, described differential amplifier circuit is made of operational amplifier A 1 and A2, wherein resistance R 5 is the current-limiting resistance of operational amplifier A 1 positive terminal, resistance R 8 is a feedback resistance, resistance R 7 is the shared resistance of negative phase end, and the circuit of operational amplifier A 2 constitutes identical with A1.The output of operational amplifier A 1, A2 connects the input end of output amplifier respectively through resistance R 10, R11.Output amplifier is made of operational amplifier A 3, and the A3 output terminal connects voltage compensator A and is used for bucking voltage; The output termination electromagnetic isolation millivolt transmitter B of voltage compensator A carries out conversion to signal; Signal after the conversion carries out computing through proportional integral module C; Operation result shows in display controller D; Display output termination regulator E is used for carrying out computing with setting value and relatively draws deviation signal; The deviation signal of the output terminal output of regulator acts on frequency converter F, and the frequency of frequency converter is changed; The variation of frequency converter frequency acts on coal blending scale motor G or coal blending dish, coal blending dish rotating speed is changed or the amplitude of coal blending scale motor is changed, and regulates the coal blending amount with this; By realize the automatic adjusting of electronic scales in coke-oven plant's coal blending technology with upper type.
The auto moisture that the utility model device adopts is measured meter and is adopted FD-S coal fast measuring Moisture Meter, and it is a kind of high-performance contact digitizing moisture teller.It is made up of sensor, frequency current converter, measurement gear, digital indicator etc.Instrument adopts the high frequency principle, and a natural frequency is promptly arranged in the instrument, measured object moisture difference, and it is just different to pass the frequency of removing instrument by sensor, and the two frequency poor converts numeral to through the frequency current converter and shows.Sensor and apparatus subject are integrated, and are provided with a plurality of gears and measure coal moisture.
The automatic ash determination meter that the utility model device adopts adopts the quick ash content calorific value of CK21-HCY-7500 measuring instrument.Its measuring principle is based on low-energy anti-scattering method principle: when the different atoms of elements of the radiation gamma of low energy, with irradiated atoms of elements nuclear interaction, irradiated atomic nucleus makes the gamma ray scattering that shines, but the direction of its scattering is relevant with illuminated Atom of Elements with the variation of energy, promptly different characteristics is arranged by the γ particle of heavy element and light element backscattering, detect the γ particle that has above-mentioned feature with nuclear radiation detector, make it become electric signal and carry out calculation process sending into electronic circuit, finally draw ash content and go out thermal value in prediction on such basis.Coal is a kind of potpourri of complexity, by the elemental composition of forming coal, except carbon (C) and hydrogen incendivity heat object such as (H), is by silicon and silicon dioxide, is to lead and ash content that the salt of elements such as iron, calcium is formed by magnesium and alundum (Al.Their atomic number difference, therefore the ability difference of scattering γ particle can be measured pit ash and calculate thermal value.
Claims (2)
1. electronic scales self-checking device that is used for coke-oven plant's coal blending technology, it is characterized in that: it contain the LOAD CELLS (3) that is connected with belt conveyer carrying roller (2) two ends, speed pickup (4), automatically measure moisture meter (6), measure ash content meter (8) automatically, scale frame component (5), millivolt transmitter and amplification change-over circuit (B), display controller (D), regulator (E) and frequency converter (F), coal blending equipment adopts electro-vibrating feeder and coal blending dish.
2. electronic scales self-checking device according to claim 1, its special feature is to be set up in parallel the automatic mensuration moisture meter (6) that is connected with belt conveyer carrying roller (2) two ends in the device and to have measured ash content meter (8) automatically, LOAD CELLS (3) and speed pickup (4), automatically measure moisture meter (6), measure ash content meter (8) automatically and all be connected with display controller (D).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205487355U CN201885791U (en) | 2010-09-25 | 2010-09-25 | Electronic-scale automatic-regulation device used for coal blending process in coking plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205487355U CN201885791U (en) | 2010-09-25 | 2010-09-25 | Electronic-scale automatic-regulation device used for coal blending process in coking plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201885791U true CN201885791U (en) | 2011-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205487355U Expired - Fee Related CN201885791U (en) | 2010-09-25 | 2010-09-25 | Electronic-scale automatic-regulation device used for coal blending process in coking plant |
Country Status (1)
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| CN (1) | CN201885791U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600975A (en) * | 2013-08-27 | 2014-02-26 | 贵州安达煤矿机械有限公司 | Conveyor control system |
| CN106645217A (en) * | 2016-12-08 | 2017-05-10 | 济南星丰机电科技有限公司 | Belt middle rapid coal quality detection equipment with crushing mechanism |
| CN107702777A (en) * | 2017-10-31 | 2018-02-16 | 唐山首钢京唐西山焦化有限责任公司 | Weight of coke obtains system in a kind of burnt tank |
| CN111221368A (en) * | 2020-03-17 | 2020-06-02 | 陆杰 | Double closed-loop control method for product yield and quality used in coal washery |
| CN113308263A (en) * | 2021-06-29 | 2021-08-27 | 攀钢集团西昌钢钒有限公司 | Method for online regulating and controlling coal moisture content of tamping coke oven |
| CN113750903A (en) * | 2021-08-24 | 2021-12-07 | 中国神华煤制油化工有限公司 | Coal blending device |
-
2010
- 2010-09-25 CN CN2010205487355U patent/CN201885791U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103600975A (en) * | 2013-08-27 | 2014-02-26 | 贵州安达煤矿机械有限公司 | Conveyor control system |
| CN106645217A (en) * | 2016-12-08 | 2017-05-10 | 济南星丰机电科技有限公司 | Belt middle rapid coal quality detection equipment with crushing mechanism |
| CN107702777A (en) * | 2017-10-31 | 2018-02-16 | 唐山首钢京唐西山焦化有限责任公司 | Weight of coke obtains system in a kind of burnt tank |
| CN111221368A (en) * | 2020-03-17 | 2020-06-02 | 陆杰 | Double closed-loop control method for product yield and quality used in coal washery |
| CN113308263A (en) * | 2021-06-29 | 2021-08-27 | 攀钢集团西昌钢钒有限公司 | Method for online regulating and controlling coal moisture content of tamping coke oven |
| CN113750903A (en) * | 2021-08-24 | 2021-12-07 | 中国神华煤制油化工有限公司 | Coal blending device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110629 Termination date: 20110925 |