CN102589642B - Monitoring device for liquid level and flow velocity of liquid iron in torpedo tank truck - Google Patents
Monitoring device for liquid level and flow velocity of liquid iron in torpedo tank truck Download PDFInfo
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- CN102589642B CN102589642B CN 201210068857 CN201210068857A CN102589642B CN 102589642 B CN102589642 B CN 102589642B CN 201210068857 CN201210068857 CN 201210068857 CN 201210068857 A CN201210068857 A CN 201210068857A CN 102589642 B CN102589642 B CN 102589642B
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Abstract
The invention discloses a monitoring device for liquid level and flow velocity of liquid iron in a torpedo tank truck. The monitoring device comprises a foundation brake device and a piezoelectric sensing device. The foundation brake device is placed in a bogie of the torpedo tank truck, the piezoelectric is arranged at a gap between swing bolsters and consists of a base, a sleeve, a transmissionrod, a transmission spring and a piezoelectric sensor, the base, the sleeve, the transmission rod and the transmission spring are mounted at the bottom of the gap, the piezoelectric sensor is embedded into a groove of the surface of the base, the sleeve is arranged above the piezoelectric sensor, the upper end of the sleeve is abutted to the top of the gap, the transmission rod is in sliding fit with the inside of the sleeve, the transmission spring is disposed between the transmission rod and the sleeve, the transmission rod presses on the piezoelectric sensor, the piezoelectric sensor is externally connected with the direct-current power source, a signal output end of the piezoelectric sensor is connected with a signal conditioning circuit, a signal output end of the signal conditioningcircuit is connected into a wireless receiving/transmitting module, a single chip microcomputer control system is arranged in a control room, and a single chip microcomputer is connected with a wireless transmitting/receiving module, is in control connection with a liquid iron switch and is externally connected with a display module, an alarm system and a single threshold controller. The monitoring device for the liquid level and the flow velocity can be used in severe environments with high temperature, dust and the like, and is easy to install and maintain without destroying an original structure of the torpedo tank truck.
Description
Technical field
The present invention relates to the monitoring field, be specifically related to a kind of monitoring device for iron in torpedo tank truck liquid level and flow velocity.
Background technology
Domestic each steel mill's used liquid of steel-making adopts torpedo tank car or ladle to come splendid attire and transhipment more.In loading process, scorching hot liquid causes near the hot environment torpedo tank car or the ladle, so that inconvenient weight or the liquid level of directly observing molten iron in the container, causes liquid guide flow groove perfusion erroneous judgement constantly.Too early perfusion means that the tank car dress is discontented, has reduced the utilization factor of tank car; Cross late perfusion, can cause that liquid molten iron body overflows, and causes the generation of major accident from tank car.
The ironworks modes of weighing that adopt are come liquid level and flow velocity are measured indirectly more both at home and abroad at present.Common method is as follows: the pressure head (piezoelectric sensor) of weighing is installed under the blast furnace iron notch rail is come tank car or the liquid bag in tinning just weighed in real time, this method cost is high, for construction and maintenance all bring very big difficulty; Paste the deformation foil gauge in the rail both sides, this deformation signal is converted into liquid level signal and then the perfusion of control molten iron diversion trench, because the deformation quantity of rail is less, so that measuring accuracy is lower; With weighing platform and desk-top weighting manner, and the ladle crane scale, directly weigh to predict liquid level, but this method is unfavorable for installation and uses that it is low to measure efficient.
In view of above-mentioned many reasons, domestic ironworks mostly adopts artificial remote direct-view to observe liquid molten iron liquid level, and this is concerning the observer, and environment abominable (high temperature, dust large) slightly has the carelessness serious accident accidents such as tank that will occur overflowing.
Summary of the invention
The invention provides a kind of bogie of wheel of selecting as basic point, the variation of truck brake rigging device and bolster gap size when utilizing tank car load, by its extruding to piezoelectric sensor, pressure signal is converted to voltage signal, data are processed, after the demarcation, obtain the monitoring device of the information of the interior liquid level of torpedo tank car and flow rate of liquid.
The technical solution used in the present invention is:
The monitoring device that is used for iron in torpedo tank truck liquid level and flow velocity, comprise brake rigging and bolster in the bogie on the tank car, gapped between described bolster and the brake rigging, it is characterized in that: the piezoelectric sensing device is installed in the described gap, the piezoelectric sensing device includes the base that is installed on the bottom surface, gap, sleeve, transmit bar and transmit spring, there is piezoelectric sensor to be flush-mounted in the groove of susceptor surface, there is sleeve the piezoelectric sensor top, the sleeve upper end withstands on the gap end face, be sliding combined with the transmission bar in the sleeve, transmit between bar and the sleeve and be provided with the transmission spring, described transmission bar is pressed on the described piezoelectric sensor, described piezoelectric sensor external direct current power supply, the signal output of piezoelectric sensor connects signal conditioning circuit, signal conditioning circuit is by the amplification that connects successively, filtering circuit, the A/D change-over circuit, data collecting card forms, the wireless receipts of signal output access of a signal conditioning circuit/module; Be provided with single-chip computer control system in the pulpit, single-chip computer control system is connected with the wireless/receipts module with wireless receipts/corresponding communication of a module, described single-chip computer control system also with molten iron switch control linkage, single-chip computer control system is circumscribed with display module, warning system.
The fixing particular location in the outer face of the sealed end of described sleeve is the upper surface of brake rigging front square hole; Described bolster is positioned at the below of the tank body of torpedo tank car, links to each other with tank body, and vertical direction is movable; Described brake rigging is positioned at the top of torpedo tank car wheel, and vertical direction is not movable.
A described wireless receipts/module and wireless/receipts module are respectively Wi-Fi sending module and Wi-Fi receiver module.
The outer wall of described sleeve is provided with the bar shaped pin hole, and transmitting on the bar has register pin, and register pin moves up and down in the bar shaped pin hole.
Described transmission bar, sleeve, transmission spring three are coaxial, and the sectional dimension of transmitting bar is not less than the external diameter that transmits spring, is slightly less than the internal diameter of sleeve.
Device of the present invention can be used for liquid level and the flow velocity of molten iron in the ladle are monitored equally, also can monitor liquid level in tank wagon, the liquefaction tank car; Again after demarcating, also can be used to torpedo tank car, ladle, tank wagon, liquefaction tank car are weighed.
For understanding in real time liquid level and the flow velocity of torpedo tank car molten iron, principle of the present invention is as follows:
At first, formulate measurement scheme.The present invention adopts the mode to the torpedo tank car weighing and sensing, and molten iron liquid level and flow velocity in the tank car are measured indirectly.Select the bogie of wheel as basic point, the variation of the brake rigging of bogie and bolster gap size when utilizing tank car load, by transmitting bar and spring, generation is to the extruding of piezoelectric sensor, obtain voltage signal, process through data, obtain the information such as weight of molten iron, liquid level and flow velocity in the torpedo tank car.
The gap changes and causes that transmitting the spring voltage signal that extruding produces to piezoelectric sensor is directly proportional with tank car load.Consider that molten iron has flowability, all can reach the monitoring purpose so that select in a plurality of bogies of torpedo tank car any to weigh as basic point.
Secondly, clear and definite system architecture.Piezoelectric sensing device and power supply, signal conditioning circuit, data collecting card, radio receiving transmitting module, single-chip computer control system, threshold controller, display circuit and panalarm consist of monitoring system jointly.
Sensing device and power supply, signal conditioning circuit, data collecting card, radio receiving transmitting module and display circuit together place the brake rigging of bogie and the gap location between the bolster; Single-chip computer control system, threshold controller, another radio receiving transmitting module, display circuit and panalarm place in the Control Room.
The 3rd, tank car identification.Because the deadweight of each tank car, slag weight and amount of elastic deformation, the linearity, repeatability etc. are incomplete same, even also there is above-mentioned difference (being the variable of time relationship) in same chassis, therefore, system must set up the independent parameter archives of each tank car.For the default absolute coding of each tank car supplies identification, and the data such as real-time weight, liquid level and flow velocity of molten iron in each tinning process are carried out respectively file record.
The 4th, demarcate and calibration.Because there are differences between the tank car, each tank car is demarcated respectively threshold value.In the molten iron filling process, when liquid level met or exceeded threshold value, system provided feedback information, was used for stopping perfusion and controlling blast-melted.Behind each transhipment molten iron, because remaining small part waste residue causes the variation of tank car parameter, therefore be necessary measurement result is carried out timely calibration and compensation, guarantee the accuracy of monitoring result, and be conducive to improve the utilization factor of tank car.
At last, the wireless transmission of signal and warning.The present invention adopts the Wi-Fi technology to carry out wireless transmission.The covering radius of Wi-Fi wireless transmission is easy to just can reach 100m, and code scooter 54mbps can guarantee that signal effectively transmits between Control Room and torpedo tank car.Because each tank car all is provided with absolute coding, after tank car is in place, launches first the Wi-Fi receiver module that tank car is encoding to Control Room and carry out tank car identification, then system carries out automatic calibration to this car.After calibration is finished, begin to pour into molten iron.
In the molten iron filling process, brake rigging in vertical direction position remains unchanged, and bolster increases along with can body weight and moves down.Therefore, from the slack tank to the full irrigation, the spacing between brake rigging and the bolster becomes greatly gradually, and piezoelectric sensor is experienced by transmitting spring and reduced gradually to the pressure that transmits bar, and the voltage of piezoelectric sensor output is with the increase linear decrease of tank body weight.Through signal conditioning circuit and data collecting card, sent data to the Wi-Fi receiver module of Control Room by Wi-Fi, process through single-chip data, the threshold value that provides with the single threshold controller compares, demonstrate in real time the information such as the liquid level of tank car and flow velocity by display circuit at last, when meeting or exceeding threshold value, single-chip computer control system sends the signal that stops to pour into, and lights simultaneously alarm lamp.
Advantage of the present invention is:
1) the present invention can be used for the rugged surroundings such as high temperature, dust, is easy to install, overhaul, and does not destroy the liquid level of original torpedo tank car structure and the monitoring device of flow velocity.
2) the present invention is simple in structure, hardware circuit is simple, be easy to install, repair and maintenance is convenient, monitoring accuracy is high, cost is low.
3) piezoelectric sensor places brake rigging and the place, the slit between the bolster of torpedo tank car bogie, is easy to installation and removal, the difficulty of not only having avoided construction to bring, and make single tank car when maintenance or fault, not affect production.
Description of drawings
Fig. 1 is the front view of piezoelectric sensing device of the present invention.
Fig. 2 is the A-A cut-open view of piezoelectric sensing device of the present invention.
Fig. 3 is the vertical view of piezoelectric sensing device of the present invention.
Fig. 4 is system principle diagram of the present invention.
Embodiment
Shown in Fig. 1-4, the monitoring device that is used for iron in torpedo tank truck liquid level and flow velocity, comprise brake rigging and bolster in the bogie on the tank car, gapped between described bolster and the brake rigging, the piezoelectric sensing device is installed in the gap, the piezoelectric sensing device includes the base 5 that is installed on the bottom surface, gap, sleeve 1, transmit bar 3 and transmit spring 2, there is piezoelectric sensor 4 to be flush-mounted in the groove on base 5 surfaces, there is sleeve 1 piezoelectric sensor 4 tops, sleeve 1 upper end withstands on the gap end face, be sliding combined with in the sleeve 1 and transmit bar 3, transmit to be provided with between bar 3 and the sleeve 1 and transmit spring 2, transmitting bar 3 is pressed on the piezoelectric sensor 4, piezoelectric sensor 4 external direct current power supplies 8, the signal output of piezoelectric sensor 4 connects signal conditioning circuit, and signal conditioning circuit is by the amplification that connects successively, filtering circuit 9, A/D change-over circuit 10, data collecting card 11 forms, the wireless receipts of signal output access of a signal conditioning circuit/module 12; Be provided with single-chip computer control system 13 in the pulpit, single-chip computer control system 13 is connected with the wireless/receipts module 14 with a wireless receipts/module 12 corresponding communications, single-chip computer control system 13 also with molten iron switch 15 control linkages, single-chip computer control system 13 is circumscribed with display module 16, warning system 17, single threshold controller 18.
The fixing particular location in the outer face of the sealed end of sleeve 1 is the upper surface of brake rigging front square hole; Bolster is positioned at the below of the tank body of torpedo tank car, links to each other with tank body, and vertical direction is movable; Brake rigging is positioned at the top of torpedo tank car wheel, and vertical direction is not movable.
Wireless receipts/send out module 12 to be respectively Wi-Fi sending module and Wi-Fi receiver module with wireless/receipts module 14.
The outer wall of sleeve 1 is provided with bar shaped pin hole 6, and transmitting on the bar 3 has register pin 7, and register pin 7 moves up and down in bar shaped pin hole 6.
Transmit bar 3, sleeve 1, to transmit spring 2 threes coaxial, the sectional dimension of transmitting bar 3 is not less than the external diameter that transmits spring 2, is slightly less than the internal diameter of sleeve 1.
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
The piezoelectric sensing device.The present invention places the piezoelectric sensing device at top and the place, the slit between the bolster upper surface of the brake rigging front square hole of torpedo tank car bogie, and this gap size of different tank cars is incomplete same.When tank car changes between slack tank and full irrigation, this slit upper and lower surface spacing range be 5～10cm.Consider the spacing size in this slit, can select the less base of thickness, the spring that length is slightly long is so that in the molten iron filling process, sensing device can effectively be worked all the time.
Structure and the size of sleeve, transmission bar, transmission spring.Sleeve, transmit bar and transmit the unitized construction of spring, during with tank car load between the brake rigging of bogie and the bolster change in size in slit pass to piezoelectric sensor, thereby produce the Real-Time Monitoring signal.The cross section of sleeve and transmission bar can be annulus and circle, can also be three-back-shaped and square.One end of sleeve is airtight, and the other end is uncovered; The two ends of transmitting bar are airtight, and its sectional dimension is not less than the external diameter of spring, but is slightly less than the internal diameter of described sleeve.Spring is sleeve, and it is placed in sleeve and transmits between the bar, and two ends are butted on respectively sleeve seal end inner face and transmit the end face of bar one end.Transmit bar and transmit spring and just can place in the sleeve, the three is coaxial, is subjected to the extruding of base, transmit bar can be in sleeve pressuring spring, and slide vertically.Open a shaped pin hole in sleeve wall, transmit a register pin is installed on the bar, and embed the bar shaped pin hole of sleeve wall, guarantee its unlikely coming off in the relative sliding process.Because for different tank cars, full irrigation is compared with slack tank, the variable quantity of slit spacing all is about 10-20mm between its truck brake rigging device and the bolster, and therefore, the length of pin-and-hole is not less than this value.Select the spring of suitable elasticity modulus and length, guarantee that spring is in the compressive state of retractable all the time in the molten iron filling process, unlikely generation inelastic deformation and can't recovering.
The arrangement of piezoelectric sensor and base.Selecting profile is cylindrical or square piezoelectric sensor, and used piezoelectric sensor should be suitable for the rugged surroundings such as high temperature, humidity, dust, has the premium properties such as operating temperature range is large, highly sensitive, good stability.Piezoelectric sensor and circuit be by the durable powered battery of high-quality high-energy, can not use the power supply of line trap link, in order to avoid the accident such as initiation fire at high temperature.Carve a groove consistent with selected piezoelectric sensor bottom shape at the upper surface of base, the bottom of piezoelectric sensor firmly is embedded in the groove.With screw base is fixed on the upper surface of bolster, the top of sleeve is fixed on the upper surface of brake rigging square hole.The upper end of piezoelectric sensor is connected with an end that transmits bar.
Circuit connects.This circuit to the output signal of piezoelectric sensor amplify, the conversion of filtering, mould/number (A/D), carry out data acquisition by single-chip microcomputer after, send data to Control Room by Wi-Fi.Electric routing battery is powered, and makes simultaneously amplifying circuit, filtering circuit, analog to digital conversion circuit, data collecting card, wireless receipts/send out modular circuit altogether.The power supply positive and negative electrode of piezoelectric sensor is connected to respectively the positive and negative electrode of battery; The signal positive and negative electrode of piezoelectric sensor is connected to respectively the positive and negative electrode of signal conditioning circuit.Circuit part should be as far as possible little, with brake rigging and the place, the slit between the bolster that conveniently places the torpedo tank car bogie.For protecting as much as possible sensing device, can fix a baffle plate at brake rigging and the place, the slit between the bolster of bogie, water and spatter the impact that brings to reduce dust, corrosion, especially molten iron.
The present invention adopts the mode to the torpedo tank car weighing and sensing, and molten iron liquid level and flow velocity in the tank car are measured indirectly.In the process that molten iron pours in the torpedo tank car, tank car load increases gradually, the brake rigging of bogie and the slit spacing dimension between the bolster are changed, by transmitting bar and spring, generation is to the extruding of piezoelectric sensor, the voltage that obtains after signal condition, data acquisition, sends data by the Wi-Fi wireless transmitter module.
At Control Room, the Wi-Fi receiver module receives the monitor signal that is transmitted by tank car Wi-Fi transmitter module, after being processed by single-chip computer control system, obtains the real-time information of weight of molten iron in the torpedo tank car.After the demarcation, also can provide the liquid level information of molten iron; According to the rate of change of weight of molten iron in the tank car to the time, also can provide the flow velocity of torpedo tank car molten iron perfusion.The single threshold controller provides threshold value for single-chip computer control system, and when the actual measurement liquid level meets or exceeds default liquid level, single-chip computer control system will interrupt the perfusion of molten iron, starts simultaneously panalarm (as: flashing light or sound alarm bell).
Set up tank car parameter archives, in the process of transhipment molten iron, because the deadweight of each tank car, slag weight and amount of elastic deformation, the linearity, repeatability etc. are incomplete same, even also there is above-mentioned difference (being the function of time) in same chassis, therefore, system must set up the independent parameter archives of each tank car, and the information such as real-time weight, liquid level and flow velocity of molten iron in the each tinning process of file record.
Tank car identification is the default absolute coding of each tank car.Because the deadweight of each tank car, slag weight and amount of elastic deformation, the linearity, repeatability etc. are incomplete same, even also there is above-mentioned difference (being the variable of time relationship) in same chassis, therefore, system must set up the independent parameter archives of each tank car.For the default absolute coding of each tank car supplies identification, and the data such as real-time weight, liquid level and flow velocity of molten iron in each tinning process are carried out respectively file record.
Demarcate, each tank car is demarcated respectively.Because there are differences between the tank car, each tank car is demarcated respectively threshold value.In molten steel pouring course, brake rigging in vertical direction position remains unchanged, and bolster increases along with can body weight and moves down.Therefore, from the slack tank to the full irrigation, the spacing between brake rigging and the bolster becomes greatly gradually, and piezoelectric sensor is subject to being reduced gradually to the pressure that transmits bar by spring.The linear relationship that the voltage swing of piezoelectric sensor output and tank body weight are negative correlation.In the molten iron filling process, when liquid level met or exceeded threshold value, system provided feedback information, was used for stopping perfusion and controlling blast-melted.
Calibration, transport molten iron at every turn after because remaining small part waste residue, cause the variation of tank car parameter, therefore before the molten iron perfusion, carry out first automatic calibration, can be in real time when guaranteeing to reach the threshold value page and accurately monitoring.
Therefore, after tank car was in place, the Wi-Fi that the license number of launching first this car is encoding to Control Room accepted module, in order to identify tank car.Carry out afterwards the automatic calibration of current tank car, system is revised accordingly to the tank car parameter.After the calibration, begin to pour into molten iron.Along with molten iron constantly injects, the voltage signal by piezoelectric sensor produces through data processing, data acquisition, after the demarcation, can get the real-time weight of torpedo tank car, obtains accordingly liquid level and the flow rate information of molten iron.Data are accepted module through the Wi-Fi that Wi-Fi is sent to Control Room, and single-chip computer control system shows liquid level and the flow velocity of molten iron by display circuit, and compare with threshold value liquid level that the single threshold controller provides.When meeting or exceeding threshold value, single-chip computer control system sends signal, stops the perfusion of molten iron diversion trench, starts simultaneously panalarm.
Claims (5)
1. monitoring device that is used for iron in torpedo tank truck liquid level and flow velocity, comprise brake rigging and bolster in the bogie on the tank car, gapped between described bolster and the brake rigging, it is characterized in that: the piezoelectric sensing device is installed in the described gap, the piezoelectric sensing device includes the base that is installed on the bottom surface, gap, sleeve, transmit bar and transmit spring, there is piezoelectric sensor to be flush-mounted in the groove of susceptor surface, there is sleeve the piezoelectric sensor top, the sleeve upper end withstands on the gap end face, be sliding combined with the transmission bar in the sleeve, transmit between bar and the sleeve and be provided with the transmission spring, described transmission bar is pressed on the described piezoelectric sensor, described piezoelectric sensor external direct current power supply, the signal output of piezoelectric sensor connects signal conditioning circuit, signal conditioning circuit is by the amplification that connects successively, filtering circuit, the A/D change-over circuit, data collecting card forms, the wireless receipts of signal output access of a signal conditioning circuit/module; Be provided with single-chip computer control system in the pulpit, single-chip computer control system is connected with the wireless/receipts module with wireless receipts/corresponding communication of a module, described single-chip computer control system also with molten iron switch control linkage, single-chip computer control system is circumscribed with display module, warning system; Described direct supply uses battery.
2. the monitoring device for iron in torpedo tank truck liquid level and flow velocity according to claim 1 is characterized in that: the fixing particular location in the outer face of the sealed end of described sleeve is the upper surface of brake rigging front square hole; Described bolster is positioned at the below of the tank body of torpedo tank car, links to each other with tank body, and vertical direction is movable; Described brake rigging is positioned at the top of torpedo tank car wheel, and vertical direction is not movable.
3. the monitoring device for iron in torpedo tank truck liquid level and flow velocity according to claim 1 is characterized in that: described wireless receipts/send out module to be respectively Wi-Fi sending module and Wi-Fi receiver module with wireless/receipts module.
4. the monitoring device for iron in torpedo tank truck liquid level and flow velocity according to claim 1, it is characterized in that: the outer wall of described sleeve is provided with the bar shaped pin hole, and transmitting on the bar has register pin, and register pin moves up and down in the bar shaped pin hole.
5. the monitoring device for iron in torpedo tank truck liquid level and flow velocity according to claim 1, it is characterized in that: described transmission bar, sleeve, transmission spring three are coaxial, the sectional dimension of transmitting bar is not less than the external diameter that transmits spring, is slightly less than the internal diameter of sleeve.
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| CN 201210068857 CN102589642B (en) | 2012-03-15 | 2012-03-15 | Monitoring device for liquid level and flow velocity of liquid iron in torpedo tank truck |
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| CN 201210068857 CN102589642B (en) | 2012-03-15 | 2012-03-15 | Monitoring device for liquid level and flow velocity of liquid iron in torpedo tank truck |
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| CN102589642B true CN102589642B (en) | 2013-10-16 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105087860B (en) * | 2014-05-14 | 2017-07-28 | 宝山钢铁股份有限公司 | The molten iron automatic weighing control method of twin furnace seat electric furnace production system |
| CN107092239B (en) * | 2016-02-17 | 2020-03-06 | 宝山钢铁股份有限公司 | Blast furnace iron output estimation device and method |
| CN110068291B (en) * | 2019-04-26 | 2020-10-30 | 浙江金果知识产权有限公司 | But quick assembly disassembly's pipeline drainage detection device |
| CN110068703B (en) * | 2019-04-26 | 2020-11-24 | 江苏越捷智能停车系统有限公司 | Multifunctional pipeline drainage detection device |
| CN110262574B (en) * | 2019-06-19 | 2022-03-11 | 中丝营口化工品港储有限公司 | Tank car operation flow rate integrated monitoring system |
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