CN111854914A - Automatic scale calibration method for weighing system of ore bulk material loading building - Google Patents
Automatic scale calibration method for weighing system of ore bulk material loading building Download PDFInfo
- Publication number
- CN111854914A CN111854914A CN202010721533.4A CN202010721533A CN111854914A CN 111854914 A CN111854914 A CN 111854914A CN 202010721533 A CN202010721533 A CN 202010721533A CN 111854914 A CN111854914 A CN 111854914A
- Authority
- CN
- China
- Prior art keywords
- weighing
- loading building
- check
- weight
- bin
- 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.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Weight Measurement For Supplying Or Discharging Of Specified Amounts Of Material (AREA)
Abstract
The invention relates to an automatic scale correcting method for a weighing system of an ore bulk material loading building, and belongs to the technical field of calibration of weighing systems of port loading buildings. The technical scheme is as follows: firstly, signal acquisition: the weighing system of the ore bulk material loading building consists of a weighing bin, a weighing sensor, a weighing instrument and a check weight, wherein the weighing bin is a container with the capacity capable of being monitored, and the weighing instrument is a human-computer interface device which provides a power supply, amplifies, converts and displays signals of the sensor; collecting the numerical value of a weighing sensor of a weighing bin during the operation of a loading building; processing signals: the accumulated amount of the upstream belt scale operation of the loading building and the accumulated amount of the downstream train scale operation are adopted, and the accumulated amount of the loading building operation is combined, so that the loading building PLC makes a comprehensive judgment of scale correction. The invention has the beneficial effects that: the accuracy and the reliability of the loading building weighing system are improved, the loading building weighing system is very convenient and fast, the calibration of the sensor is more accurate and concise, and great convenience is brought to maintenance personnel.
Description
Technical Field
The invention relates to an automatic scale correcting method for a weighing system of an ore bulk material loading building, and belongs to the technical field of calibration of weighing systems of port loading buildings.
Background
With the transformation of the domestic economic development situation and the implementation of supply-side reform, the transformation and upgrade of the traditional industry are obviously accelerated, the environmental protection pressure is increased, the steel consumption demand continues to shrink, and the market competition of the smelting industry is more intense. In order to improve the efficiency, reduce the cost and meet the demand of train port-dredging of ore-drawing raw materials by steel enterprises, the weighing system for loading ore bulk materials into a building is widely applied, and the general weighing system comprises a container with the weight capable of being weighed, a plurality of weighing sensors which can output signals according to the load and are linearly related to the weighed load, a set of power supply, signal processing, amplifying and converting circuits and a human-computer interface display device capable of displaying the weight. Check-up weight provides the standard weight of school balance, generally adopts artifical check-up, and the problem exists: the efficiency is low, the error is big for the accuracy and the reliability of loading building weighing system receive the influence.
Disclosure of Invention
The invention aims to provide an automatic scale calibration method for a weighing system of an ore bulk material loading building, which improves the accuracy and reliability of the weighing system of the loading building, is very convenient and fast, and solves the problems in the background technology.
The technical scheme of the invention is as follows:
an automatic scale calibration method for a weighing system of an ore bulk material loading building comprises the following steps:
firstly, signal acquisition: the weighing system of the ore bulk material loading building consists of a weighing bin, a weighing sensor, a weighing instrument and a check weight, wherein the weighing bin is a container with the capacity capable of being monitored, and the weighing instrument is a human-computer interface device which provides a power supply, amplifies, converts and displays signals of the sensor; collecting the numerical value of a weighing sensor of a weighing bin during the operation of a loading building;
processing signals: the accumulated amount of the operation of the upstream belt scale of the loading building and the accumulated amount of the operation of the downstream train scale are adopted, and the accumulated amount of the operation of the loading building is combined, so that the PLC of the loading building makes a comprehensive judgment of scale correction;
and the loading building PLC has the functions of online monitoring and online correction.
More specifically, the method comprises the following steps:
the weighing data of the centralized control belt weigher and the railway track scale are compared with the weighing data of the loading building weigher, and the remote automatic operation of the weigher calibration is realized through the PLC logic control of the loading building; the weighing instrument adopts a 920i weighing instrument, is a programmable multi-channel digital weighing display controller, and the front panel comprises a keyboard with 28 buttons and a large backlight liquid crystal display screen which is a weighing display; the weighing bin is provided with four weighing sensors, the weighing sensors are double-end shear type load sensors, the rated bearing capacity of each weighing sensor is 56 tons, the precision is 1/10000, the maximum overload capacity of each weighing sensor is 300% of the rated quantity, and the safety overload capacity is 150% of the rated quantity; the weighing sensor is of a temperature compensation type, and can stabilize the performance of the scale within a large temperature variation range (-50C- + 40C); four load cell terminal cables are in the sensor junction box which receives signals from the load cells and sums them so that the signals are transmitted from the sensor junction box to the load display by only one cable.
The weighing bin is provided with 10 tons of check weights, each check weight is 1 ton, and the two sides of each check weight are respectively provided with 5 check weights, and the total number of the check weights is 10; each check weight is calibrated and sealed by a legal weighing mechanism; the check weights are used for checking and verifying the accuracy of the weighing system of the weighing bin; designing a soft button for lifting the check weight on the HIM, and pressing the soft button to lift the check weight; checking the accuracy of the weigh bin by checking the reading of the weigh display and verifying that the reading is consistent with the check weight weigh; and the information of each step of scale calibration and the display numerical value of the weighing sensor are visually seen through the HMI monitoring interface of the loading building.
Adding corresponding time delay and content of detecting a position signal of a check weight in a PLC program of a loading building; in the automatic scale calibration process, the loading building PLC sends the zero value to the weighing instrument through a data packet; when the zero point verification is completed, an operator can visually see that the bin weight display is 0 from the HIM interface; before checking the weight value of 10 tons, inputting a corresponding numerical value into a loading building PLC in advance through programming; after the 10 ton weight value is transmitted to the weighing instrument, the scale calibration is completed, but the check weight still needs to be lifted for check, and the accuracy of the weighing bin is checked by checking the reading of the digital weighing display and checking whether the reading is consistent with the weighing of the check weight.
The calibration of the weighing system of the ore bulk material loading building is to convert the pressure applied by a weighing sensor into a millivolt-level voltage signal and output the millivolt-level voltage signal, and the output voltage signal is linearly related to the applied pressure; the weighing instrument can establish a coordinate system in which the output voltage of the weighing sensor and the weighing weight are in one-to-one correspondence by calibrating the voltage to be 0 point when the weighing bin is emptied and calibrating the voltage to be 10000kg after the weight of 10 tons is loaded, a straight line of the relation between the weight and the voltage is determined through the two points, the slope of the straight line is the proportional factor of the weight and the voltage, and the weight of the material borne by the weighing bin can be accurately detected.
The invention realizes the sensor calibration without stopping, can inform a driver of calibrating and modifying in the calibration process, but does not influence the starting and stopping process and the traction and push train, thereby not only avoiding the operation stop generated during the calibration, but also greatly improving the calibration precision. The operation can be calibrated after the operation is finished, and the operation can be finished without monitoring.
The invention has the beneficial effects that: the accuracy and the reliability of the loading building weighing system are improved, the loading building weighing system is very convenient and fast, the calibration of the sensor is more accurate and concise, and great convenience is brought to maintenance personnel.
Drawings
FIG. 1 is a schematic diagram of a system according to an embodiment of the present invention;
FIG. 2 is a flow chart of an embodiment of the present invention;
in the figure: the device comprises a buffer bin 1, a feeding gate 2, a weighing bin 3, a weighing sensor 4, a check weight 5, a chute 6, a control chamber 7 and a discharging gate 8.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings.
An automatic scale calibration method for a weighing system of an ore bulk material loading building comprises the following steps:
firstly, signal acquisition: the weighing system of the ore bulk material loading building consists of a weighing bin, a weighing sensor, a weighing instrument and a check weight, wherein the weighing bin is a container with the capacity capable of being monitored, and the weighing instrument is a human-computer interface device which provides a power supply, amplifies, converts and displays signals of the sensor; collecting the numerical value of a weighing sensor of a weighing bin during the operation of a loading building;
processing signals: the accumulated amount of the operation of the upstream belt scale of the loading building and the accumulated amount of the operation of the downstream train scale are adopted, and the accumulated amount of the operation of the loading building is combined, so that the PLC of the loading building makes a comprehensive judgment of scale correction;
and the loading building PLC has the functions of online monitoring and online correction.
More specifically, the method comprises the following steps:
the weighing data of the centralized control belt weigher and the railway track scale are compared with the weighing data of the loading building weigher, and the remote automatic operation of the weigher calibration is realized through the PLC logic control of the loading building; the weighing instrument adopts a 920i weighing instrument, is a programmable multi-channel digital weighing display controller, and the front panel comprises a keyboard with 28 buttons and a large backlight liquid crystal display screen which is a weighing display; the weighing bin is provided with four weighing sensors, the weighing sensors are double-end shear type load sensors, the rated bearing capacity of each weighing sensor is 56 tons, the precision is 1/10000, the maximum overload capacity of each weighing sensor is 300% of the rated quantity, and the safety overload capacity is 150% of the rated quantity; the weighing sensor is of a temperature compensation type, and can stabilize the performance of the scale within a large temperature variation range (-50C- + 40C); four load cell terminal cables are in the sensor junction box which receives signals from the load cells and sums them so that the signals are transmitted from the sensor junction box to the load display by only one cable.
The weighing bin is provided with 10 tons of check weights, each check weight is 1 ton, and the two sides of each check weight are respectively provided with 5 check weights, and the total number of the check weights is 10; each check weight is calibrated and sealed by a legal weighing mechanism; the check weights are used for checking and verifying the accuracy of the weighing system of the weighing bin; designing a soft button for lifting the check weight on the HIM, and pressing the soft button to lift the check weight; checking the accuracy of the weigh bin by checking the reading of the weigh display and verifying that the reading is consistent with the check weight weigh; and the information of each step of scale calibration and the display numerical value of the weighing sensor are visually seen through the HMI monitoring interface of the loading building.
Adding corresponding time delay and content of detecting a position signal of a check weight in a PLC program of a loading building; in the automatic scale calibration process, the loading building PLC sends the zero value to the weighing instrument through a data packet; when the zero point verification is completed, an operator can visually see that the bin weight display is 0 from the HIM interface; before checking the weight value of 10 tons, inputting a corresponding numerical value into a loading building PLC in advance through programming; after the 10 ton weight value is transmitted to the weighing instrument, the scale calibration is completed, but the check weight still needs to be lifted for check, and the accuracy of the weighing bin is checked by checking the reading of the digital weighing display and checking whether the reading is consistent with the weighing of the check weight.
The calibration of the weighing system of the ore bulk material loading building is to convert the pressure applied by a weighing sensor into a millivolt-level voltage signal and output the millivolt-level voltage signal, and the output voltage signal is linearly related to the applied pressure; the weighing instrument can establish a coordinate system in which the output voltage of the weighing sensor and the weighing weight are in one-to-one correspondence by calibrating the voltage to be 0 point when the weighing bin is emptied and calibrating the voltage to be 10000kg after the weight of 10 tons is loaded, a straight line of the relation between the weight and the voltage is determined through the two points, the slope of the straight line is the proportional factor of the weight and the voltage, and the weight of the material borne by the weighing bin can be accurately detected.
Referring to the attached drawing 1, the ore bulk material loading building weighing system is installed in the middle and lower part of the loading building, the weighing instrument is installed in the loading building PLC cabinet of a control room 7, the weighing bin 3 is located above the weighing sensor 4 and connected through support matching, the check weight 5 is installed below the weighing bin 3 and is connected with the weighing bin through a hydraulic lifting oil cylinder and a steel wire flexible connection. The weighing bin 3 is an isolated and suspended bin body, receives materials unloaded from the buffer bin 1, and is suspended on a steel-structured beam of the loading tower through four weighing sensor supports. The weight of the weigh bin 3 is monitored by the load cell at any time, and as the weight of the weigh bin increases, the output signal of the load cell increases linearly with it. The weighed materials are discharged into the train compartment through the discharge gate 8 and the chute 6. The weighing instrument provides an excitation power supply for the weighing sensor, simultaneously also receives the feedback signal of the weighing sensor, and converts the signal into a material weight signal through the internal processor and simultaneously outputs the material weight signal to the screen of the weighing display and the loading building PLC.
The invention realizes high-precision weighing, and the double-end shear type load sensor has the characteristic of self-linearity correction, can provide high static measurement value, and can control the precision within 3/1000.
Referring to the attached figure 2, which is a flow chart of the automatic scale calibration of the invention, a loading building PLC receives data of a track scale and compares the data of a central control belt conveyor scale with data of a riding building. And the PLC of the loading building rapidly judges the data and makes a powerful guarantee for the operation personnel of the loading building to check the scale.
In the process of automatic scale calibration, the calibration weights 5 are symmetrically placed on the discharging gate layer around the weighing bin 3. These certified check weights are used to verify the accuracy of the weigh bin weighing system. The complete check-up process is carried out in the control room, and loading building operating personnel can see the check-up weight through the HIM interface and lift up the state of falling.
In order to ensure reliable weighing of the check weight, corresponding time delay and detection of a position signal of the check weight are added in a PLC program of a loading building, and the check weight is ensured to move reliably.
And in the automatic scale calibration process, the PLC of the loading building sends the zero value to the weighing instrument through a data packet to avoid human input errors.
When the zero point check is completed, the operator can visually see the bin weight display as 0 from the HIM interface.
Before the check of the weight value of 10 tons is started, the corresponding numerical value is input into the loading building PLC in advance through programming, so that the manual check error is effectively avoided.
After the 10 tons of check-up weight values are conveyed to the weighing instrument, the check-up weight is finished, but the check-up weight still needs to be lifted, the HIM interface is added with the weight and the soft button is lifted, the reading of the digital weighing display can be checked, and whether the reading is consistent with the check-up weight in weighing is checked, so that the accuracy of the weighing bin is checked.
And recording the verified new and old zero point values and new and old intervals by the loading building PLC.
Claims (4)
1. An automatic scale calibration method for a weighing system of an ore bulk material loading building is characterized by comprising the following steps:
firstly, signal acquisition: the weighing system of the ore bulk material loading building consists of a weighing bin, a weighing sensor, a weighing instrument and a check weight, wherein the weighing bin is a container with the capacity capable of being monitored, and the weighing instrument is a human-computer interface device which provides a power supply, amplifies, converts and displays signals of the sensor; collecting the numerical value of a weighing sensor of a weighing bin during the operation of a loading building;
processing signals: the accumulated amount of the operation of the upstream belt scale of the loading building and the accumulated amount of the operation of the downstream train scale are adopted, and the accumulated amount of the operation of the loading building is combined, so that the PLC of the loading building makes a comprehensive judgment of scale correction;
and the loading building PLC has the functions of online monitoring and online correction.
2. The automatic scale calibration method for the weighing system of the ore bulk material loading building, according to claim 1, is characterized in that: the weighing data of the centralized control belt weigher and the railway track scale are compared with the weighing data of the loading building weigher, and the remote automatic operation of the weigher calibration is realized through the PLC logic control of the loading building; the weighing instrument adopts a 920i weighing instrument, is a programmable multi-channel digital weighing display controller, and the front panel comprises a keyboard with 28 buttons and a large backlight liquid crystal display screen which is a weighing display; four weighing sensors are installed in the weighing bin, the weighing sensors select double-end shear type load sensors, four weighing sensor terminal cables are arranged in a sensor junction box, the sensor junction box receives signals from the weighing sensors and collects the signals, and the signals are transmitted to the weighing display from the sensor junction box only through one cable.
3. The automatic scale calibrating method for the weighing system of the ore bulk material loading building, according to claim 1 or 2, is characterized in that: the weighing bin is provided with 10 tons of check weights, each check weight is 1 ton, and the two sides of each check weight are respectively provided with 5 check weights, and the total number of the check weights is 10; each check weight is calibrated and sealed by a legal weighing mechanism; the check weights are used for checking and verifying the accuracy of the weighing system of the weighing bin; designing a soft button for lifting the check weight on the HIM, and pressing the soft button to lift the check weight; checking the accuracy of the weigh bin by checking the reading of the weigh display and verifying that the reading is consistent with the check weight weigh; and the information of each step of scale calibration and the display numerical value of the weighing sensor are visually seen through the HMI monitoring interface of the loading building.
4. The automatic scale calibrating method for the weighing system of the ore bulk material loading building, according to claim 1 or 2, is characterized in that: adding corresponding time delay and content of detecting a position signal of a check weight in a PLC program of a loading building; in the automatic scale calibration process, the loading building PLC sends the zero value to the weighing instrument through a data packet; when the zero point verification is completed, an operator can visually see that the bin weight display is 0 from the HIM interface; before checking the weight value of 10 tons, inputting a corresponding numerical value into a loading building PLC in advance through programming; after the 10 ton weight value is transmitted to the weighing instrument, the scale calibration is completed, but the check weight still needs to be lifted for check, and the accuracy of the weighing bin is checked by checking the reading of the digital weighing display and checking whether the reading is consistent with the weighing of the check weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010721533.4A CN111854914A (en) | 2020-07-24 | 2020-07-24 | Automatic scale calibration method for weighing system of ore bulk material loading building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010721533.4A CN111854914A (en) | 2020-07-24 | 2020-07-24 | Automatic scale calibration method for weighing system of ore bulk material loading building |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111854914A true CN111854914A (en) | 2020-10-30 |
Family
ID=72950462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010721533.4A Pending CN111854914A (en) | 2020-07-24 | 2020-07-24 | Automatic scale calibration method for weighing system of ore bulk material loading building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111854914A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201177533Y (en) * | 2008-03-12 | 2009-01-07 | 常州市荣创自动化设备有限公司 | Gravity type automatic material loading weighing equipment calibration device |
| CN201413188Y (en) * | 2008-11-06 | 2010-02-24 | 南京三埃工控股份有限公司 | Multiple-conveyer connection material circulating type multifunctional belt scale automatic check system |
| CN102358524A (en) * | 2011-10-09 | 2012-02-22 | 山西长治维特衡器有限公司 | Quick quantitative entrucking system |
| CN205879337U (en) * | 2016-04-27 | 2017-01-11 | 中国神华能源股份有限公司 | Loading weighing system |
| CN106908133A (en) * | 2017-03-28 | 2017-06-30 | 山东钢铁集团日照有限公司 | A kind of on-line automatic method of calibration of bunker scale based on a small amount of counterweight |
| CN108225533A (en) * | 2018-01-16 | 2018-06-29 | 广州发展集团股份有限公司 | A kind of method of calibration of weighing of belt conveyer scale |
| CN108438943A (en) * | 2018-04-27 | 2018-08-24 | 濮阳兴泰金属结构制品有限公司 | A kind of sulphur automobile loading system in bulk and its loading method |
| CN110186545A (en) * | 2018-04-23 | 2019-08-30 | 江阴兴澄特种钢铁有限公司 | A kind of bunker scale auxiliary examination device and its implementation |
-
2020
- 2020-07-24 CN CN202010721533.4A patent/CN111854914A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201177533Y (en) * | 2008-03-12 | 2009-01-07 | 常州市荣创自动化设备有限公司 | Gravity type automatic material loading weighing equipment calibration device |
| CN201413188Y (en) * | 2008-11-06 | 2010-02-24 | 南京三埃工控股份有限公司 | Multiple-conveyer connection material circulating type multifunctional belt scale automatic check system |
| CN102358524A (en) * | 2011-10-09 | 2012-02-22 | 山西长治维特衡器有限公司 | Quick quantitative entrucking system |
| CN205879337U (en) * | 2016-04-27 | 2017-01-11 | 中国神华能源股份有限公司 | Loading weighing system |
| CN106908133A (en) * | 2017-03-28 | 2017-06-30 | 山东钢铁集团日照有限公司 | A kind of on-line automatic method of calibration of bunker scale based on a small amount of counterweight |
| CN108225533A (en) * | 2018-01-16 | 2018-06-29 | 广州发展集团股份有限公司 | A kind of method of calibration of weighing of belt conveyer scale |
| CN110186545A (en) * | 2018-04-23 | 2019-08-30 | 江阴兴澄特种钢铁有限公司 | A kind of bunker scale auxiliary examination device and its implementation |
| CN108438943A (en) * | 2018-04-27 | 2018-08-24 | 濮阳兴泰金属结构制品有限公司 | A kind of sulphur automobile loading system in bulk and its loading method |
Non-Patent Citations (3)
| Title |
|---|
| 周游: "关于铁路自动化煤炭定量装车系统中称量系统的研究", 《内蒙古煤炭经济》 * |
| 陈伟良 等: "港口煤炭码头快速定量装火车设备和工艺的比选", 《起重运输机械》 * |
| 韩兴海 等: "非连续累积秤定量装车系统方案", 《衡器》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106919127B (en) | Material level detection method based on software virtual technology | |
| CN105775791A (en) | Discontinuous accumulated loading system and method for coal train loading | |
| CN102910459B (en) | A kind of improved type skip bucket definite weight equipment | |
| AU2010239007B2 (en) | Weighing control device and method thereof for electronic belt scale | |
| CN108225533A (en) | A kind of method of calibration of weighing of belt conveyer scale | |
| CN101532869B (en) | Weighing control device of hopper scale and method thereof | |
| CN102538936B (en) | Calibration device of large weighing apparatus | |
| CN201611276U (en) | Novel device for detecting and checking weighing equipment | |
| CN101526391A (en) | Digital hopper-balance checker | |
| CN207095697U (en) | A kind of belt scale metering calibration equipment | |
| CN105784066B (en) | A kind of mine ultra-deep drop shaft material position On-line Measuring Method with Redundancy Design | |
| CN201892566U (en) | Hopper scale calibration device | |
| CN111854914A (en) | Automatic scale calibration method for weighing system of ore bulk material loading building | |
| CN105222878A (en) | The simple and easy method of adjustment of a kind of large-tonnage hopper weighing system | |
| CN105547447B (en) | A kind of Coriolis scale method for detecting accuracy and device based on material experiment | |
| CN205236454U (en) | Online checkweigher based on electromagnetic force balance sensor | |
| CN106768254A (en) | A kind of bunker scale calibrating installation and its calibration method | |
| CN201780161U (en) | Belt scale compound checking device for metering conveyor | |
| CN200979446Y (en) | An electronic weigher for forklifts | |
| CN201094091Y (en) | Electronic scale checking apparatus | |
| CN201413189Y (en) | Digital type hopper scale checking apparatus | |
| CN112159879B (en) | Blast furnace hopper scale unbalance loading rapid leveling method | |
| CN110319910B (en) | Belt scale automatic code adding online checking method and checking system thereof | |
| CN209485529U (en) | Realize bunker scale without counterweight calibration equipment | |
| CN209230769U (en) | A kind of converter auxiliary material claims caliberating device |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201030 |
|
| RJ01 | Rejection of invention patent application after publication |