CN102589642A - 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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- CN102589642A CN102589642A CN2012100688578A CN201210068857A CN102589642A CN 102589642 A CN102589642 A CN 102589642A CN 2012100688578 A CN2012100688578 A CN 2012100688578A CN 201210068857 A CN201210068857 A CN 201210068857A CN 102589642 A CN102589642 A CN 102589642A
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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 transmission rod, 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 conditioning circuit 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 that is used for torpedo tank car molten iron 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.Perfusion too early means that the tank car dress is discontented, has reduced the utilization factor of tank car; Cross perfusion late, 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 come liquid level and flow velocity are measured indirectly more both at home and abroad at present.Common method is following: the pressure head (piezoelectric sensor) of weighing is installed under the blast furnace iron notch rail is come just weighing in real time at the tank car or the liquid bag of tinning, this method cost is high, for constructing and keeping in repair and 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 the desk-top mode of weighing, and the ladle crane scale, directly weigh and predict liquid level, but this method is unfavorable for installation and uses that efficiency of measurement is low.
In view of above-mentioned many reasons, domestic ironworks adopts artificial remote direct-view to observe liquid molten iron liquid level mostly, and this is concerning the observer, and environment abominable (high temperature, dust big) has the carelessness serious accident accidents such as jar that will occur overflowing slightly.
Summary of the invention
The invention provides a kind of bogie of selecting wheel as basic point; The variation of gap size between truck brake rigging device and the bolster when utilizing tank car load; Through its extruding, convert pressure signal into voltage signal, data processing to piezoelectric sensor; After the demarcation, obtain the monitoring device of the information of interior liquid level of torpedo tank car and flow rate of liquid.
The technical scheme that the present invention adopts is:
The monitoring device that is used for torpedo tank car molten iron liquid level and flow velocity comprises 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 base, sleeve, the transmission bar that is installed on the bottom surface, gap and transmits spring, has piezoelectric sensor to be flush-mounted in the groove of susceptor surface, and 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, and signal conditioning circuit is made up of the amplification, filtering circuit, A/D change-over circuit, the data collecting card that connect successively, and the signal output of signal conditioning circuit inserts a wireless receipts/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; Said 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; Said 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 is upper and lower moving 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 the 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 the liquid level and the flow velocity of torpedo tank car molten iron in real time, principle of the present invention is following:
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.The bogie of selecting wheel is as basic point; The variation of gap size between the brake rigging of bogie and the bolster when utilizing tank car load; By transmitting bar and spring, produce extruding to piezoelectric sensor, obtain voltage signal; Through data processing, obtain 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, any is weighed as basic point and all can reach the monitoring purpose in a plurality of bogies of feasible selection torpedo tank car.
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 constitute 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 all 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 preset 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 file records respectively.
The 4th, demarcate and calibration.Because of there are differences between the tank car, each tank car is demarcated threshold value respectively.In the molten iron filling process, when liquid level met or exceeded threshold value, system provided feedback information, be used for to blast-melted stop the perfusion controlling.Behind each transhipment molten iron,, therefore be necessary measurement result is in time proofreaied and correct and compensated, guarantee the accuracy of monitoring result, and help improving the utilization factor of tank car because remaining few part waste residue causes the variation of tank car parameter.
At last, 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 sign indicating number 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 was in place, the Wi-Fi receiver module that elder generation's emission tank car is encoding to Control Room carried out tank car identification, and system calibrates this car automatically then.Calibration begins to pour into molten iron after accomplishing.
In the molten iron filling process, brake rigging position in vertical direction 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 for the pressure that transmits bar gradually, 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; By Wi-Fi data are sent to the Wi-Fi receiver module of Control Room, handle through single-chip data, the threshold value that is provided with the single threshold controller compares; Demonstrate the information such as liquid level and flow velocity of tank car at last in real time through display circuit; When meeting or exceeding threshold value, single-chip computer control system sends the signal that stops to pour into, and lights alarm lamp simultaneously.
Advantage of the present invention is:
1) the present invention can be used for 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 the 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 influence 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 a system principle diagram of the present invention.
Embodiment
Shown in Fig. 1-4, be used for the monitoring device of torpedo tank car molten iron 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 base 5, sleeve 1, the transmission bar 3 that is installed on the bottom surface, gap and transmits 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, and sleeve 1 upper end withstands on the gap end face, are sliding combined with in the sleeve 1 to transmit bar 3; Transmit to be provided with between bar 3 and the sleeve 1 and transmit spring 2; Transmit bar 3 and be 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; Signal conditioning circuit is made up of the amplification, filtering circuit 9, A/D change-over circuit 10, the data collecting card 11 that connect successively, and the signal output of signal conditioning circuit inserts a wireless receipts/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 is upper and lower moving 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 describes 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 the 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 surfaces spacing range be 5～10cm.Consider the spacing size in this slit, can select the less base of thickness, the spring that length is long slightly makes that sensing device can effectively be worked all the time in the molten iron filling process.
The 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 real-time monitor signal.Sleeve can be annulus and circle with the cross section of transmitting bar, 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 said sleeve.Spring is a sleeve, and it is placed in sleeve and transmits between the bar, and two ends are butted on sleeve seal end inner face and the end face that transmits bar one end respectively.Transmit bar and transmit spring and can place in the sleeve just, the three is coaxial, receives the extruding of base, transmit bar can be in sleeve pressuring spring, and slide vertically.On sleeve wall, open a shaped pin hole, 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 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 for use is cylindrical or square piezoelectric sensor, and used piezoelectric sensor should be suitable for rugged surroundings such as high temperature, humidity, dust, has premium properties such as operating temperature range is big, 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 accident such as initiation fire at high temperature.The upper surface of base carve one with the consistent groove of selected piezoelectric sensor bottom shape, the bottom of piezoelectric sensor firmly is embedded in the groove.Be fixed on the upper surface of bolster to base with screw, 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 through single-chip microcomputer after, by Wi-Fi data are sent to Control Room.Electric routing battery is supplied power, and makes amplifying circuit, filtering circuit, analog to digital conversion circuit, data collecting card, wireless receipts/send out modular circuit altogether simultaneously.The power supply positive and negative electrode of piezoelectric sensor is connected to the positive and negative electrode of battery respectively; The signal positive and negative electrode of piezoelectric sensor is connected to the positive and negative electrode of signal conditioning circuit respectively.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 sensing device as much as possible, can be at the fixing baffle plate of brake rigging and place, the slit between the bolster of bogie, water and spatter the influence that is brought 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 torpedo tank car; Tank car load increases gradually, and 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 through 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 handled by single-chip computer control system, obtains the real-time information of weight of molten iron in the torpedo tank car.After the demarcation, the liquid level information of molten iron can be provided also; To the change of time rate, the flow velocity of torpedo tank car molten iron perfusion can be provided also according to weight of molten iron in the tank car.The single threshold controller is that single-chip computer control system provides threshold value, and when the actual measurement liquid level meets or exceeds preset liquid level, single-chip computer control system will interrupt the perfusion of molten iron, start panalarm (as: flashing light or loud alarm bell) simultaneously.
Set up tank car parameter archives; In the process of transhipment molten iron; Because therefore the deadweight of each tank car, slag weight and amount of elastic deformation, the linearity, repeatability etc. are all incomplete same, even also there is above-mentioned difference (being the function of time) in same chassis; 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 records.
Tank car identification is the preset 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 all 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 preset 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 file records respectively.
Demarcate, each tank car is demarcated respectively.Because of there are differences between the tank car, each tank car is demarcated threshold value respectively.In molten steel pouring course, brake rigging position in vertical direction 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 receives by spring reduces for the pressure that transmits bar gradually.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, be used for to blast-melted stop the perfusion controlling.
Calibration, transport molten iron at every turn after because remaining few part waste residue causes the variation of tank car parameter, therefore before the molten iron perfusion, calibrate automatically earlier, can monitor in real time and accurately when guaranteeing to reach the threshold value page.
Therefore, after tank car was in place, the Wi-Fi that the license number of elder generation's this car of emission is encoding to Control Room accepted module, in order to the identification tank car.Carry out the automatic calibration of current tank car afterwards, system is revised the tank car parameter accordingly.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 the liquid level and the flow rate information of molten iron in view of the above.Data are accepted module through the Wi-Fi that Wi-Fi is sent to Control Room, and single-chip computer control system through the display circuit demonstration, and compares the liquid level of molten iron and flow velocity with threshold value liquid level that the single threshold controller is provided.When meeting or exceeding threshold value, single-chip computer control system sends signal, stops the perfusion of molten iron diversion trench, starts panalarm simultaneously.
Claims (5)
1. a monitoring device that is used for torpedo tank car molten iron liquid level and flow velocity comprises brake rigging and bolster in the bogie on the tank car, and is 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 base, sleeve, the transmission bar that is installed on the bottom surface, gap and transmits spring, has piezoelectric sensor to be flush-mounted in the groove of susceptor surface, and 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, and signal conditioning circuit is made up of the amplification, filtering circuit, A/D change-over circuit, the data collecting card that connect successively, and the signal output of signal conditioning circuit inserts a wireless receipts/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.
2. the monitoring device that is used for torpedo tank car molten iron 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; Said 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; Said brake rigging is positioned at the top of torpedo tank car wheel, and vertical direction is not movable.
3. the monitoring device that is used for torpedo tank car molten iron liquid level and flow velocity according to claim 1 is characterized in that: a described wireless receipts/module and wireless/receipts module are respectively Wi-Fi sending module and Wi-Fi receiver module.
4. the monitoring device that is used for torpedo tank car molten iron liquid level and flow velocity according to claim 1 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 is upper and lower moving in the bar shaped pin hole.
5. the monitoring device that is used for torpedo tank car molten iron 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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| CN105087860A (en) * | 2014-05-14 | 2015-11-25 | 宝山钢铁股份有限公司 | Automatic molten iron weighing control method of double-seat electric furnace production system |
| CN107092239A (en) * | 2016-02-17 | 2017-08-25 | 宝山钢铁股份有限公司 | Blast furnace casting amount estimating device and method |
| CN110068703A (en) * | 2019-04-26 | 2019-07-30 | 重庆盛厦果时科技有限公司 | Multifunctional pipe drains detection device |
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| CN110262574A (en) * | 2019-06-19 | 2019-09-20 | 中丝营口化工品港储有限公司 | Groove tank car operation flow velocity integrated monitoring system |
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| 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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| CN102589642B (en) | 2013-10-16 |
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