CN106276155A - A kind of Gravimetric Coal Feeders device and calibration steps thereof - Google Patents
A kind of Gravimetric Coal Feeders device and calibration steps thereof Download PDFInfo
- Publication number
- CN106276155A CN106276155A CN201610605664.XA CN201610605664A CN106276155A CN 106276155 A CN106276155 A CN 106276155A CN 201610605664 A CN201610605664 A CN 201610605664A CN 106276155 A CN106276155 A CN 106276155A
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- Prior art keywords
- weighing
- conveyer
- coal
- coal supply
- controller
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/02—Devices for feeding articles or materials to conveyors
- B65G47/16—Devices for feeding articles or materials to conveyors for feeding materials in bulk
- B65G47/18—Arrangements or applications of hoppers or chutes
- B65G47/19—Arrangements or applications of hoppers or chutes having means for controlling material flow, e.g. to prevent overloading
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
Abstract
The invention discloses a kind of Gravimetric Coal Feeders device and calibration steps thereof, including pre-coal supply conveyer, weigh conveyer, LOAD CELLS, tachogenerator, weighing controller, verification counterweight, lifter, housing and weight scale frame, described pre-coal supply conveyer is arranged on the top of conveyer of weighing, housing above pre-coal supply conveyer offers feed hopper, LOAD CELLS supports conveyer of weighing, tachogenerator is contained in the rotating shaft of conveyer of weighing, weight scale is set up on pre-coal supply conveyer, one end of lifter is fixedly connected with the casing, the other end of lifter is connected with verification counterweight, LOAD CELLS, tachogenerator, weight scale frame connects weighing controller.The present invention can carry out actual material calibration to Gravimetric Coal Feeders in real time, not only can improve the measuring accuracy of Gravimetric Coal Feeders, and not affect the properly functioning of Gravimetric Coal Feeders.
Description
Technical field
The present invention relates to a kind of Gravimetric Coal Feeders device, specifically a kind of Gravimetric Coal Feeders device and calibration steps thereof.
Background technology
Gravimetric Coal Feeders is a kind of consecutive weighings coal supply equipment, for coal-fired quantitative conveying.Can be automatically according to predetermined
Program, according to setting coal-supplying amount, is automatically adjusted belt speed, makes mass flow be equal to setting value, with constant delivery rate even
Continue and constantly carry bulk material, can be used for needing the dispensing occasion of continuous-feeding, at home and abroad electric power coal, metallurgy, building materials
It is used widely etc. industry.
At present, the weighing structure of existing Gravimetric Coal Feeders uses single carrying roller or many roller types, and its measuring accuracy is easy
Affected by belt tension, belt rigidity etc., it is impossible to ensure weighing precision.On-the-spot Gravimetric Coal Feeders is limited by use condition, very
Difficult employing material calibrating mode is calibrated, and generally individually uses analog forms such as hanging calibration of weight, captive chain calibration, Electronic Calibration
Calibrating, and this analog calibration mode effect is undesirable, still there is bigger error with actual weighing in weighing results.It addition,
Gravimetric Coal Feeders change of mechanical property in running brings the impact of belt effect, it is impossible to compensation for calibrating errors in time, from
And cause that the measuring accuracy of Gravimetric Coal Feeders is low, long-time stability are bad, make electricity power enterprise's positive balance that is difficult to generate electricity calculate.
Coal-burning power plant's coal consumption accounts for cost of electricity-generating close to 70%, along with the propelling of the policy of surfing the Net at a competitive price, to Gravimetric Coal Feeders meter
The requirement of accuracy of measurement is the highest, more payes attention to reliability, the stability of its measuring accuracy simultaneously.Want to make Gravimetric Coal Feeders
Precision is high, good stability, only carry out actual material calibration by material, and the system meters linearity error under different flow entered
Row is revised and Gravimetric Coal Feeders just can be made to reach higher precision.If the stability of Gravimetric Coal Feeders to be kept, then it is the most right to need
It carries out actual material calibration, properly functioning in order to not affect feeder, and actual material calibration must complete by real-time online.There is presently no can
In real time Gravimetric Coal Feeders is carried out the device and method of actual material calibration.
Summary of the invention
The problem existed for above-mentioned prior art, the present invention provides a kind of Gravimetric Coal Feeders device and calibration steps thereof,
In real time Gravimetric Coal Feeders can be carried out actual material calibration, not only can improve the measuring accuracy of Gravimetric Coal Feeders, and not affect and weigh
Feeder properly functioning.
To achieve these goals, the technical solution used in the present invention is: this kind of Gravimetric Coal Feeders device, including pre-coal supply
Conveyer, conveyer of weighing, LOAD CELLS, tachogenerator, weighing controller, verification counterweight, lifter, housing and weigh
Scale frame, described pre-coal supply conveyer is arranged on the top of conveyer of weighing, the housing above pre-coal supply conveyer offer into
Hopper, LOAD CELLS supports conveyer of weighing, and tachogenerator is contained in the rotating shaft of conveyer of weighing, and weight scale is set up in pre-
On coal supply conveyer, one end of lifter is fixedly connected with the casing, and the other end of lifter is connected with verification counterweight, weighing and sensing
Device, tachogenerator, weight scale frame connect weighing controller.
Further, the position of described weight scale frame is in the underface of feed hopper；It is easy to weighing of material.
Further, described weighing controller is computer or Programmable Logic Controller.
Further, conveyer lower end is weighed described in equipped with guide wheel；Conveyer of being easy to weigh removes from housing.
Further, described lifter is linear drives lifter or rotates driving lifter.
The calibration steps of a kind of Gravimetric Coal Feeders device, concretely comprises the following steps:
The first step: conveyer of weighing, LOAD CELLS, tachogenerator, the weighing system of weighing controller composition are entered
Row static weighing is calibrated: the most pre-coal supply conveyer and conveyer of weighing are the most out of service, and weighing controller returns to zero, so
After the verification counterweight of known weight be put into by lifter weigh on conveyer, weighing controller is carried out by LOAD CELLS
Static weight is calibrated；
Second step: conveyer of weighing, LOAD CELLS, tachogenerator, the weighing system of weighing controller composition are existed
Line dynamic weighing material is calibrated: first under conveyer running status of weighing, pre-coal supply conveyer is out of service, and now material stops
Only supply, after the material conveying on conveyer to be weighed empties, weighing controller returns to zero, and conveyer of weighing keeps fortune
Row state, then sets coal supply time t1 the startup optimization pre-coal supply conveyer of pre-coal supply conveyer according to weighing controller,
Material is t2 from pre-coal supply conveyer drop to weigh time of conveyer, stops fortune after pre-coal supply conveyer runs the t1 time
OK, conveyer of weighing remains on state, and material is all that t1 adds t2, then to falling to the time of conveyer of weighing through blanking
Carry out static weighing at the whole materials weighed on conveyer, described in the weigh static weighing of conveyer be that weighing controller only leads to
Cross LOAD CELLS to record material and fall gravimetric value when weighing conveyer completely, do not consider the speed that tachogenerator records
Value, obtains inventory w1；Simultaneously to material from start to fall weigh conveyer until pre-coal supply conveyer stop time material complete
Falling and carry out dynamic weighing at conveyer of weighing, the velocity amplitude integrating that weighing controller obtains by combining tachogenerator obtains
Material cumulative amount is w2, and correction value K1 of the coefficient of ranger of weighing controller is K1=K0* (w1/w2), and wherein K0 is control of weighing
The original coefficient of ranger of device 6 processed, weighing controller uses K1 correction value for the coefficient of ranger of dynamic weighting；
3rd step: measure linear error correction, during this pre-coal supply conveyer from maximum stream flow to minimum discharge multiple spot
Run: the most pre-coal supply conveyer runs with maximum stream flow, and the process repeating above-mentioned second step obtains dynamic weighing under this flow
The coefficient of ranger K1 of metering, runs with the second flow the most again, and the process continuing to repeat above-mentioned second step obtains under this flow
The coefficient of ranger K2 of dynamic weighting；By that analogy, range K3, K4, K5 are obtained successively ..., between two adjacent flow values
Coefficient of ranger linearly revised by known linear correction algorithm further according to both K value.
Compared with prior art, the present invention uses pre-coal supply conveyer, conveyer of weighing, LOAD CELLS, test the speed sensing
The mode that device, weighing controller, verification counterweight, lifter, housing and weight scale frame combine, by this calibration steps present invention
In real time Gravimetric Coal Feeders can be carried out actual material calibration, not only increase the measuring accuracy of Gravimetric Coal Feeders, and do not affect and weigh
Feeder properly functioning, thus ensure the transport of coal material.
Accompanying drawing explanation
Fig. 1 is the perspective diagram of the present invention；
Fig. 2 is the structural representation of pre-coal supply conveyer in the present invention；
Fig. 3 is the structural representation of conveyer of weighing in the present invention；
Fig. 4 is the left-hand perspective view of Fig. 3；
Fig. 5 is the verification weight structure schematic diagram of the present invention.
In figure: 1, housing, 2, pre-coal supply conveyer, 3, conveyer of weighing, 4, LOAD CELLS, 5, tachogenerator, 6,
Weighing controller, 7, verification counterweight, 8, feed hopper, 9, guide wheel, 10, weight scale frame, 11, lifter.
Detailed description of the invention
The invention will be further described below.
As shown in Figures 1 to 5, a kind of Gravimetric Coal Feeders device, including pre-coal supply conveyer 2, conveyer 3 of weighing, weigh
Sensor 4, tachogenerator 5, weighing controller 6, verification counterweight 7, lifter 11, housing 1 and weight scale frame 10, described pre-give
Coal conveyer 2 is arranged on the top of conveyer 3 of weighing, and the housing 1 above pre-coal supply conveyer 2 offers feed hopper 7, weighs
Sensor 4 supports and weighs conveyer 3, and tachogenerator 5 is contained in the rotating shaft of conveyer 3 of weighing, weight scale frame 10 be located at pre-to
On coal conveyer 2, one end of lifter 11 is fixing with housing 1 to be connected, and the other end of lifter 11 is connected with verification counterweight 7, claims
Weight sensor 4, tachogenerator 5, weight scale frame 10 connect weighing controller 6.
Further, the position of described weight scale frame 10 is in the underface of feed hopper 7.It is easy to weighing of material.
Further, described weighing controller 6 is computer or Programmable Logic Controller.
Further, conveyer 3 lower end is weighed described in equipped with guide wheel 9.Conveyer 3 of being easy to weigh removes from housing.
Further, described lifter 11 is linear drives lifter or rotates driving lifter.
The calibration steps of a kind of Gravimetric Coal Feeders device, concretely comprises the following steps:
The first step: conveyer 3 of weighing, LOAD CELLS 4, tachogenerator 5, weighing controller 6 composition are weighed and be
System carries out static weighing calibration: the most pre-coal supply conveyer 2 and conveyer 3 of weighing are the most out of service, and weighing controller 6 is carried out
Zeroing, is then put into the verification counterweight 7 of known weight by lifter 11 and weighs on conveyer 3, and weighing controller 6 is by claiming
Weight sensor 4 carries out static weight calibration；
Second step: conveyer 3 of weighing, LOAD CELLS 4, tachogenerator 5, weighing controller 6 composition are weighed and be
Online dynamic weighing material of uniting is calibrated: first under conveyer 3 running status of weighing, pre-coal supply conveyer 2 is out of service, now
Material stops supply, and after the material conveying on conveyer 3 to be weighed empties, weighing controller 6 returns to zero, conveyer 3 of weighing
Keep running status, then set the coal supply time t1 of pre-coal supply conveyer 2 according to weighing controller 6 and startup optimization is pre-
Coal supply conveyer 2, material is t2 from pre-coal supply conveyer 2 conveyer 3 time that drops to weigh, when pre-coal supply conveyer 2 runs
After the t1 time out of service, conveyer 3 of weighing remains on state, material through blanking all to the time of conveyer 3 of weighing
Add t2 for t1, then the whole materials fallen weighing on conveyer 3 carried out static weighing, described in weigh the static state of conveyer 3
Weighing, to be weighing controller 6 record material by LOAD CELLS 4 falls gravimetric value when weighing conveyer 3 completely, does not examines
Consider the velocity amplitude that tachogenerator 5 records, obtain inventory w1；Material is weighed conveyer 3 until pre-from starting to fall simultaneously
When coal supply conveyer 2 stops, material entirely falls within conveyer 3 of weighing and carries out dynamic weighing, and weighing controller 6 is tested the speed by combination
The material cumulative amount that the velocity amplitude integrating that sensor 5 obtains obtains is w2, and correction value K1 of the coefficient of ranger of weighing controller 6 is
K1=K0* (w1/w2), wherein K0 is the original coefficient of ranger of weighing controller 6, and weighing controller 6 uses K1 correction value to be used for
The coefficient of ranger of dynamic weighting；
3rd step: measure linear error correction, during this pre-coal supply conveyer 2 from maximum stream flow to minimum discharge multiple spot
Run: the most pre-coal supply conveyer 2 runs with maximum stream flow, and the process repeating above-mentioned second step obtains dynamic weighing under this flow
The coefficient of ranger K1 of metering, runs with the second flow the most again, and the process continuing to repeat above-mentioned second step obtains under this flow
The coefficient of ranger K2 of dynamic weighting；By that analogy, range K3, K4, K5 are obtained successively ..., between two adjacent flow values
Coefficient of ranger linearly revised by known linear correction algorithm further according to both K value.
Claims (6)
1. a Gravimetric Coal Feeders device, it is characterised in that include pre-coal supply conveyer (2), conveyer of weighing (3), biography of weighing
Sensor (4), tachogenerator (5), weighing controller (6), verification counterweight (7), lifter (12), housing (1) and weight scale frame
(10), described pre-coal supply conveyer (2) is arranged on the top of conveyer of weighing (3), at the housing of pre-coal supply conveyer (2) top
(1) offering feed hopper (7), LOAD CELLS (4) supports conveyer (3) of weighing, and tachogenerator (5) is contained in conveyer of weighing
(3) in rotating shaft, weight scale frame (10) is located on pre-coal supply conveyer (2), and one end of lifter (12) is fixing with housing (1) even
Connecing, the other end of lifter (12) is connected with verification counterweight (7), LOAD CELLS (4), tachogenerator (5), weight scale frame
(10) weighing controller (6) is connected.
A kind of Gravimetric Coal Feeders device the most according to claim 1, it is characterised in that the position of described weight scale frame 10
Underface in feed hopper (7).
A kind of Gravimetric Coal Feeders device the most according to claim 1, it is characterised in that described weighing controller (6) is meter
Calculation machine or Programmable Logic Controller.
A kind of Gravimetric Coal Feeders device the most according to claim 1, it is characterised in that described in weigh conveyer (3) lower end
Equipped with guide wheel (9).
A kind of Gravimetric Coal Feeders device the most according to claim 1, it is characterised in that described lifter 11 is linear drives
Lifter or rotation drive lifter.
The calibration steps of a kind of Gravimetric Coal Feeders device the most according to claim 1, it is characterised in that concretely comprise the following steps:
The first step: the title that conveyer of weighing (3), LOAD CELLS (4), tachogenerator (5), weighing controller (6) are formed
Weight system carries out static weighing calibration: the most pre-coal supply conveyer (2) and conveyer of weighing (3) are the most out of service, control of weighing
Device processed (6) returns to zero, and is then put on conveyer of weighing (3) by lifter (12) by the verification counterweight (7) of known weight,
Weighing controller (6) carries out static weight calibration by LOAD CELLS (4)；
Second step: the title that conveyer of weighing (3), LOAD CELLS (4), tachogenerator (5), weighing controller (6) are formed
Weight system online dynamic weighing material calibration: first pre-coal supply conveyer (2) stops fortune under conveyer of weighing (3) running status
OK, now material stops supply, and after the material conveying on conveyer to be weighed (3) empties, weighing controller (6) returns to zero,
Conveyer (3) of weighing keeps running status, then sets the coal supply of pre-coal supply conveyer (2) according to weighing controller (6)
Time t1 startup optimization pre-coal supply conveyer (2), material drops to, from pre-coal supply conveyer (2), conveyer (3) time of weighing
For t2, out of service after pre-coal supply conveyer (2) runs the t1 time, conveyer of weighing (3) remains on state, and material passes through
Blanking is all that t1 adds t2 to the time of conveyer of weighing (3), then carries out the whole materials fallen on conveyer of weighing (3)
Static weighing, obtains inventory w1；Material is weighed conveyer (3) until pre-coal supply conveyer (2) stops from starting to fall simultaneously
Time only, material entirely falls within conveyer of weighing (3) and carries out dynamic weighing, and weighing controller (6) is by combining tachogenerator (5)
The material cumulative amount that the velocity amplitude integrating obtained obtains is w2, and correction value K1 of the coefficient of ranger of weighing controller (6) is K1=
K0* (w1/w2), wherein K0 is weighing controller (6) original coefficient of ranger, and weighing controller (6) uses K1 correction value to be used for
The coefficient of ranger of dynamic weighting；
3rd step: measure linear error correction, during this, pre-coal supply conveyer (2) is transported from maximum stream flow to minimum discharge multiple spot
OK: the most pre-coal supply conveyer (2) is run with maximum stream flow, and the process repeating above-mentioned second step obtains dynamic weighing under this flow
The coefficient of ranger K1 of metering, runs with the second flow the most again, and the process continuing to repeat above-mentioned second step obtains under this flow
The coefficient of ranger K2 of dynamic weighting；By that analogy, range K3, K4, K5 are obtained successively ..., between two adjacent flow values
Coefficient of ranger linearly revised by known linear correction algorithm further according to both K value.
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| CN201610605664.XA CN106276155B (en) | 2016-07-27 | 2016-07-27 | A kind of Gravimetric Coal Feeders device and its calibration method |
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| CN201610605664.XA CN106276155B (en) | 2016-07-27 | 2016-07-27 | A kind of Gravimetric Coal Feeders device and its calibration method |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932060A (en) * | 2017-03-28 | 2017-07-07 | 山东博硕自动化技术有限公司 | A kind of material continuous metering distribution |
| CN107860513A (en) * | 2017-10-27 | 2018-03-30 | 北京空间技术研制试验中心 | The method for determining spacecraft mass characteristic |
| CN107966203A (en) * | 2017-11-30 | 2018-04-27 | 华润电力（海丰）有限公司 | A kind of method of calibration of feeder |
| CN108313661A (en) * | 2018-02-02 | 2018-07-24 | 中国石油集团川庆钻探工程有限公司钻采工程技术研究院 | It is a kind of can online self-tuning moving material carrying method |
| CN109489792A (en) * | 2017-09-11 | 2019-03-19 | 南京梅山冶金发展有限公司 | A kind of feed proportioning precision on-line monitoring method |
| CN110286608A (en) * | 2019-06-06 | 2019-09-27 | 上海蓝箭实业发展有限公司 | Run coal bin dynamic compensation deals system and method |
| PL425012A1 (en) * | 2018-03-25 | 2019-10-07 | Belor-Polska Spółka Z Ograniczoną Odpowiedzialnością | Set of devices for, and method of unification of loose products |
| CN112009977A (en) * | 2020-08-13 | 2020-12-01 | 大唐河北发电有限公司马头热电分公司 | Power plant belt type weighing coal feeder with independent control device and control method thereof |
| CN112161690A (en) * | 2020-09-17 | 2021-01-01 | 无锡利信能源科技有限公司 | Remote automatic unmanned calibration method for coal feeder |
| CN113916297A (en) * | 2021-10-18 | 2022-01-11 | 淮北矿业股份有限公司临涣选煤厂 | Coal measurement and quality inspection integrated intelligent management and control system |
| CN115014480A (en) * | 2022-08-05 | 2022-09-06 | 徐州昊诺自动化科技有限公司 | High-precision belt scale calibration system and method |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932060A (en) * | 2017-03-28 | 2017-07-07 | 山东博硕自动化技术有限公司 | A kind of material continuous metering distribution |
| CN109489792A (en) * | 2017-09-11 | 2019-03-19 | 南京梅山冶金发展有限公司 | A kind of feed proportioning precision on-line monitoring method |
| CN107860513A (en) * | 2017-10-27 | 2018-03-30 | 北京空间技术研制试验中心 | The method for determining spacecraft mass characteristic |
| CN107966203A (en) * | 2017-11-30 | 2018-04-27 | 华润电力（海丰）有限公司 | A kind of method of calibration of feeder |
| CN108313661A (en) * | 2018-02-02 | 2018-07-24 | 中国石油集团川庆钻探工程有限公司钻采工程技术研究院 | It is a kind of can online self-tuning moving material carrying method |
| PL425012A1 (en) * | 2018-03-25 | 2019-10-07 | Belor-Polska Spółka Z Ograniczoną Odpowiedzialnością | Set of devices for, and method of unification of loose products |
| CN110286608A (en) * | 2019-06-06 | 2019-09-27 | 上海蓝箭实业发展有限公司 | Run coal bin dynamic compensation deals system and method |
| CN112009977A (en) * | 2020-08-13 | 2020-12-01 | 大唐河北发电有限公司马头热电分公司 | Power plant belt type weighing coal feeder with independent control device and control method thereof |
| CN112161690A (en) * | 2020-09-17 | 2021-01-01 | 无锡利信能源科技有限公司 | Remote automatic unmanned calibration method for coal feeder |
| CN113916297A (en) * | 2021-10-18 | 2022-01-11 | 淮北矿业股份有限公司临涣选煤厂 | Coal measurement and quality inspection integrated intelligent management and control system |
| CN113916297B (en) * | 2021-10-18 | 2022-05-31 | 淮北矿业股份有限公司临涣选煤厂 | Coal measurement and quality inspection integrated intelligent management and control system |
| CN115014480A (en) * | 2022-08-05 | 2022-09-06 | 徐州昊诺自动化科技有限公司 | High-precision belt scale calibration system and method |
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| CN106276155B (en) | 2018-08-07 |
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