阅读说明：本技术 一种基于欧姆定律的焦罐衬板检测装置 (Coke pot lining plate detection device based on ohm law ) 是由 丁海泉 于 2020-05-30 设计创作，主要内容包括：本发明涉及一种基于欧姆定律的焦罐衬板检测装置,所述检测装置包括安装在焦罐衬板上的电阻系统和安装在电机车上的信号检测装置,电阻系统主要由多只和焦罐衬板数量相同的工形电阻并联而成。该技术方案可以在干熄焦焦罐台车使用过程中实时监控焦罐衬板的状态,以解决目前无法监控干熄焦焦罐衬板脱落异常情况的问题。(The invention relates to a coke tank lining plate detection device based on ohm's law, which comprises a resistance system and a signal detection device, wherein the resistance system is installed on a coke tank lining plate, the signal detection device is installed on an electric locomotive, and the resistance system is mainly formed by connecting a plurality of I-shaped resistors with the same number as the coke tank lining plates in parallel. The technical scheme can monitor the state of the coke tank lining plate in real time in the use process of the coke tank trolley for dry quenching so as to solve the problem that the abnormal falling condition of the coke tank lining plate for dry quenching cannot be monitored at present.)

1. The utility model provides a welt detection device based on ohm law, its characterized in that, detection device is including installing the resistance system on the burnt jar welt and installing the signal detection device on the electric locomotive, and the resistance system mainly is formed by many worker's shape resistance parallels the same with burnt jar welt quantity.

2. The ohm's law-based liner detection device as claimed in claim 1, wherein the i-shaped resistor comprises an upper T-shaped guide pipe, a lower T-shaped guide pipe and a measuring resistor, wherein the measuring resistor is connected between the upper T-shaped guide pipe and the lower T-shaped guide pipe of the i-shaped resistor, and two ends of the i-shaped resistor are respectively connected with other i-shaped resistors through wires, are arranged on the outer side of the liner and are insulated from the liner.

3. The ohm's law based liner plate detection device as claimed in claim 2, wherein the signal detection device mainly comprises a coke oven side contact, a cylinder moving plate, a buckle, a pressure spring, a spring support, a trolley side pressure head wiring positive pole and a trolley side pressure head wiring negative pole, wherein a resistor R0 is connected in series on a trolley side pressure head wiring positive pole lead, the expansion and contraction of the cylinder are controlled by a vehicle-mounted control system through a control solenoid valve, the cylinder moving plate moves along with the cylinder, the buckle, the pressure spring and the spring support are mounted on the plate, the trolley side pressure head is mounted at one end of the spring support, and the trolley side pressure head and the coke oven side contact conduction current.

4. The lining plate detection device based on ohm's law as claimed in claim 3, wherein the positive pole of the trolley side pressure head wiring is connected to the positive pole of the on-board control system analog quantity input end through a resistor R0, the negative pole of the trolley side pressure head wiring is connected to the negative pole of the on-board control system analog quantity input end, and the control system judges the state of the coke tank lining plate by measuring the input signal.

5. The lining plate detection device based on ohm's law according to claim 4, wherein the I-shaped resistor is installed on the outer side of each coke pot lining plate, a first I-shaped resistor of a first coke pot lining plate is connected to a side joint of a coke pot, the I-shaped resistors on each subsequent lining plate are sequentially connected in parallel through a lead, a second layer is connected to the first layer after the first layer is connected in parallel, and the like until the I-shaped resistors on the last lining plate are combined.

6. The ohm's law based liner testing device according to claim 5, wherein the signal testing device controls the process as follows: in the process of rotating and focusing the coke tank, when the coke tank starts to rotate and open the band-type brake, the vehicle-mounted control system controls the cylinder electromagnetic valve to contract, so that the cylinder drives the trolley side pressure head to be separated from the lateral contact of the coke tank, the rotation of the coke tank is realized, and the damage of a connecting cable is avoided; when the coke tank is positioned at a proper position and the internal contracting brake is closed, the vehicle-mounted control system controls the cylinder electromagnetic valve to extend, so that the cylinder drives the trolley side pressure head to be connected with a coke tank side contact, and the conduction of a detection circuit is realized; in the process of receiving and sending the coke tank, when the APS clamps and receives a locking signal, the vehicle-mounted control system controls the cylinder electromagnetic valve to contract, so that the cylinder drives the trolley side pressure head to be separated from the coke tank side contact point, the lifting of the coke tank is realized, the damage of a connecting cable is avoided, when the APS loosens the locking signal to disappear and the coke tank signal is detected, the vehicle-mounted control system controls the cylinder electromagnetic valve to extend, so that the cylinder drives the trolley side pressure head to be connected with the coke tank side contact point, and the conduction of a recovery detection circuit is realized.

Technical Field

The invention relates to a detection device, in particular to a coke tank lining plate detection device based on ohm's law, and belongs to the technical field of electrical equipment control.

Background

The dry quenching electric locomotive generally drags two coke tank trolleys to and fro the coke oven and a dry quenching area to receive red coke and coke tanks, and each coke tank trolley is provided with a coke tank for transferring coke in turn. The coke tank mainly comprises a coke tank frame and coke tank lining plates, wherein the lining plates are made of heat-resistant iron alloy, and each lining plate is arranged on the coke tank frame in a riveting mode or the like to form a complete tank body for rotationally receiving red coke in a furnace area and conveying the red coke to a coke tank under a derrick of a dry quenching hoister. The main problems encountered in the production of coke cans at present are: 1) the integrity of each coke drum liner is not detected by detection tools and methods; 2) at present, the manual timing visual inspection of the coke tank judgment state is mainly used, the manual operation is excessively relied on, and the continuity detection cannot be realized; 3) the falling condition of the lining plate at the hidden part is difficult to be observed by artificial naked eyes; 4) the condition that the coke pot lining plate falls off cannot be detected quickly; 5) the lining board is protected after falling off without quick and reliable safety measures. Therefore, a new solution to solve the above technical problems is urgently needed.

Disclosure of Invention

The invention provides a lining plate detection device based on ohm's law aiming at the problems in the prior art, and the technical scheme can monitor the state of a coke tank lining plate in real time in the using process of a coke tank trolley so as to solve the problem that the abnormal falling condition of the coke tank lining plate of dry quenching cannot be monitored at present.

In order to achieve the purpose, the technical scheme is that the coke tank lining plate detection device based on the ohm's law comprises a resistance system and a signal detection device, wherein the resistance system is installed on a coke tank lining plate, the signal detection device is installed on an electric locomotive, and the resistance system is mainly formed by connecting a plurality of I-shaped resistors with the same number as the coke tank lining plates in parallel.

As an improvement of the invention, the I-shaped resistor comprises an upper T-shaped guide pipe, a lower T-shaped guide pipe and a measuring resistor, wherein the measuring resistor is connected between the upper T-shaped guide pipe and the lower T-shaped guide pipe of the I-shaped resistor, two ends of the I-shaped resistor are respectively connected with the I-shaped resistors on other lining plates through leads, and the I-shaped resistor is arranged on the outer side of the lining plates and is insulated from the lining plates.

As an improvement of the invention, the signal detection device mainly comprises a coke oven side contact, a cylinder movable plate, a buckle, a pressure spring, a spring support, a trolley side pressure head wiring positive pole and a trolley side pressure head wiring negative pole, wherein a resistor R0 is connected on a trolley side pressure head wiring positive pole lead in series, a vehicle-mounted control system controls the expansion and contraction of the cylinder through controlling an electromagnetic valve, the cylinder movable plate moves along with the cylinder, the buckle, the pressure spring and the spring support are arranged on the plate, the trolley side pressure head is arranged at one end of the spring support, and the trolley side pressure head and the coke oven side contact conduction current. When the cylinder contracts, the trolley side pressure head is separated from the coke tank side joint without being pressed, the spring is unfolded along the spring support, and the trolley side pressure head is fixed by the buckle. When the cylinder extends, the pressure is generated by the contact of the trolley side pressure head and the coke tank side, the spring contracts along the spring support, and the trolley side pressure head is connected with the coke tank side contact by the pressure of the spring. The positive pole of the trolley side pressure head wiring is connected to the positive pole of the wire analog quantity input end of the vehicle-mounted control system through a resistor R0, the negative pole of the trolley side pressure head wiring is connected to the negative pole of the wire analog quantity input end of the vehicle-mounted control system, and the control system judges the state of the coke tank lining plate through measuring an input signal.

As an improvement of the invention, the positive pole of the trolley side pressure head wiring is connected to the positive pole of the wired analog quantity input end of the vehicle-mounted control system 2 through a resistor R0, the negative pole of the trolley side pressure head wiring is connected to the negative pole of the wired analog quantity input end of the vehicle-mounted control system, and the control system judges the state of the coke tank lining plate by measuring an input signal.

As an improvement of the invention, the I-shaped resistor is arranged on the outer side of each coke tank lining plate, a first I-shaped resistor of a first coke tank lining plate is connected from the side joint of the coke tank, the I-shaped resistors on each lining plate are sequentially connected in parallel through a lead, a second layer is connected after the first layer is connected in parallel, and the like until the last I-shaped resistor is connected. And a current milliamp quantity signal which can be recognized by industrial control equipment is formed by inputting direct current voltage to the parallel resistors.

As an improvement of the invention, the signal detection device comprises the following control processes: in the process of rotating and focusing the coke tank, when the coke tank starts to rotate and open the band-type brake, the vehicle-mounted control system controls the cylinder electromagnetic valve to contract, so that the cylinder drives the trolley side pressure head to be separated from the lateral contact of the coke tank, the rotation of the coke tank is realized, and the damage of a connecting cable is avoided; when the coke tank is positioned at a proper position and the internal contracting brake is closed, the vehicle-mounted control system controls the cylinder electromagnetic valve to extend, so that the cylinder drives the trolley side pressure head to be connected with a coke tank side contact, and the conduction of a detection circuit is realized; in the process of receiving and sending the coke tank, when the APS clamps and receives a car locking signal, the vehicle-mounted control system controls the cylinder electromagnetic valve to contract, so that the cylinder drives the trolley side pressure head to be separated from the coke tank side contact point, the lifting of the coke tank is realized, and the damage of a connecting cable is avoided. When the APS unlocking and locking signal disappears and a coke tank signal is detected, the vehicle-mounted control system controls the cylinder electromagnetic valve to extend, so that the cylinder drives the trolley side pressure head to be connected with a coke tank side contact point, and the conduction of the detection circuit is recovered.

Compared with the prior art, the invention has the following advantages:

1. real-time monitoring and detection of each or key lining plate on the coke tank are realized;

2. each lining plate monitoring device is relatively independently connected in parallel, so that later maintenance is facilitated;

3. the continuous omnibearing detection of the lining plate is realized by replacing manpower, and the reliability is high;

4. the generated signal is a milliampere signal commonly used by industrial equipment, and the identifiability and the compatibility are good;

5. calculating the position of the lining plate which can be positioned rapidly in an abnormal state through a control system;

this technical scheme can real time monitoring dry coke quenching burnt jar welt state to solve present unable control dry coke quenching burnt jar welt and drop the abnormal conditions and lead to burnt and tear the belt scheduling problem of burnt jar, through the application of this technique, can detect out the abnormal state of welt fast, and quick location has unusual welt, because on-vehicle control system can receive the abnormal state information of welt, can take chain protection means when taking place unusually, avoid the emergence and the expansion of follow-up accident.

Drawings

FIG. 1 is a diagram of an I-shaped resistor structure;

FIG. 2 is a schematic view of an I-shaped resistor installation;

FIG. 3 is a block diagram of a signal detection device;

FIG. 4 is a schematic diagram of the operation of the liner testing apparatus;

wherein 1-upper T-duct; 2-lower T-duct; 3-measuring the resistance; 4-a wire; 5-coke drum side contact; 6-cylinder movable plate; 7-buckling; 8-a pressure spring; 9-a spring support; 10-trolley side ram; 11- -trolley side pressure head positive terminal; 12- -trolley side pressure head negative terminal.

The specific implementation mode is as follows:

for the purpose of enhancing an understanding of the present invention, the present embodiment will be described in detail below with reference to the accompanying drawings.

Example 1: referring to fig. 1-4, a lining plate detection device based on ohm's law, the detection device includes a resistance system installed on the lining plate of the coke tank and a signal detection device installed on the electric locomotive, the resistance system is mainly formed by connecting a plurality of I-shaped resistors with the same number as the lining plate of the coke tank in parallel, the I-shaped resistors include an upper T-shaped conduit 1, a lower T-shaped conduit 2 and a measuring resistor 3, wherein the measuring resistor 3 is connected between the upper T-shaped conduit 1 and the lower T-shaped conduit of the I-shaped resistors, two ends of the measuring resistor are respectively connected with other I-shaped resistors through a lead 4, the signal detection device is installed outside the lining plate and insulated from the lining plate, the structure of the signal detection device is shown in fig. 3, and the signal detection device mainly includes a coke tank side contact 5, a cylinder movable plate 6, a buckle 7, a pressure spring 8, a spring support 9, a trolley side pressure head 10, a trolley side pressure head connection positive electrode 11 and a trolley side pressure head connection negative electrode 12, the trolley side pressure head is connected with a positive wire 11 of the wiring, a resistor R0 is connected on the positive wire in series, wherein a vehicle-mounted control system controls the expansion of a cylinder through a control electromagnetic valve, a cylinder movable plate 6 moves along with the cylinder, a buckle 7, a pressure spring 8 and a spring support 9 are arranged on the plate, a trolley side pressure head 10 is arranged at one end of the spring support 9, and the trolley side pressure head 10 and a coke drum side contact 5 are in contact conduction with each other to conduct current. When the cylinder contracts, the trolley side pressure head 10 is separated from the coke tank side contact 5 without pressure, the spring 8 is unfolded along the spring support 9, and the trolley side pressure head 10 is fixed by the buckle 7. When the cylinder is extended, the carriage side ram 10 is brought into contact with the coke drum side contact 5 to generate pressure, the spring 8 is contracted along the spring holder 9, and the carriage side ram 10 is connected to the coke drum side contact 5 by the pressure of the spring 8. The trolley side pressure head wiring positive electrode 11 is connected with the positive electrode of the wire system analog quantity input end of the vehicle-mounted control system 2 through a resistor R0, the trolley side pressure head wiring negative electrode 12 is connected with the negative electrode of the wire system analog quantity input end of the vehicle-mounted control system 2, the control system judges the state of the coke tank lining plate through measuring an input signal, the trolley side pressure head wiring positive electrode 11 is connected with the positive electrode of the wire system analog quantity input end of the vehicle-mounted control system 2 through a resistor R0, the trolley side pressure head wiring negative electrode 12 is connected with the negative electrode of the wire system analog quantity input end of the vehicle-mounted control system 2, the control system judges the state of the coke tank lining plate through measuring the input signal, the I-shaped resistor is arranged on the outer side of each coke tank lining plate, the I-shaped resistor of the first coke tank lining plate is connected with the coke tank side joint 5, the I-shaped resistors on each lining plate are sequentially connected in parallel through a lead in a mode shown in figure 2, and then connected with the second layer after the first layer is connected in parallel, and so on until the last I-shaped resistor is incorporated. The direct-current voltage is input into the parallel resistors to form a current milliamp quantity signal which can be recognized by industrial control equipment, and the control process of the signal detection device is as follows: in the process of rotating and focusing the coke tank, when the coke tank starts to rotate and open the band-type brake, the vehicle-mounted control system controls the cylinder electromagnetic valve to contract, so that the cylinder drives the trolley side pressure head 10 to be separated from the coke tank side contact 5, the rotation of the coke tank is realized, and the damage of a connecting cable is avoided; when the coke tank is positioned at a proper position and the internal contracting brake is closed, the vehicle-mounted control system controls the cylinder electromagnetic valve to extend, so that the cylinder drives the trolley side pressure head 10 to be connected with the coke tank side contact 5, and the conduction of a detection line is realized; in the process of receiving and sending the coke tank, when the APS clamps and receives a car locking signal, the vehicle-mounted control system controls the cylinder electromagnetic valve to contract, so that the cylinder drives the trolley side pressure head 10 to be separated from the coke tank side contact 5, the lifting of the coke tank is realized, and the damage of a connecting cable is avoided. When the APS unlocking and locking signal disappears and a coke tank signal is detected, the vehicle-mounted control system controls the cylinder electromagnetic valve to extend, so that the cylinder drives the trolley side pressure head 10 to be connected with the coke tank side contact 5, and the conduction of a detection line is restored;

the working principle diagram of the lining plate detection device consisting of the coke tank resistance system and the trolley signal detection device is shown in figure 4. In order to ensure compatibility with industrial control equipment, a two-wire instrument connection mode is adopted, wherein the voltage of L + and L-is 24VDC commonly used by an industrial control system, the resistance value of R0 is 24VDC/20MA is 1.2K omega, in order to obtain a standard 4-20Ma signal, the maximum resistance values of R1 and R2 … Rn which are connected in parallel are 24VDC/4MA-R0 is 6K omega-1.2K omega is 4.8K omega, in order to simplify calculation, the resistance values of each resistor of N lining plates contained in a coke tank are the same, namely R1R 2 is … Rn is 4.8K omega, the resistance values of the resistors connected in parallel are obtainedThe generated current signal can be controlled at 4MA-20MA through the series connection and parallel connection of the resistors and the input 24VDC power supply, and the generated current signal conforms to the standard input signal of the industrial instrument.

The method for judging the abnormal state of the coke tank comprises the following steps: after the coke tank stops rotating or the flow of receiving and sending the coke tank is finished, the signal detection device is linked with the closing of a band-type brake of the rotary coke tank or an APS clamping signal, an I-shaped resistor connected in parallel on the coke tank is connected into a loop of a vehicle-mounted control system, and then the I-shaped resistor is connected in series with a resistor R0 arranged on the side of the electric locomotive, wherein the resistor R0 is 1.2K omega. Under the condition that the lining plates do not fall off, the total resistance value of the parallel resistors is calculated according to a parallel resistor resistance value calculation formulaThe measured signal is a current milliamp signalIf the X (X is less than or equal to N) th lining plate falls off, the I-shaped resistor on the lining plate can be separated from the current circuit, the subsequent parallel resistor circuit is disconnected, and the resistance value of the parallel resistor on the circuit is at the momentThe measured signal is milliamp signalWill be provided withSubstituting into a formula to calculate to obtainThe control system can calculate that the X lining plate falls off according to the detected current value, and can send an alarm to an operator to perform corresponding automatic interlocking protection, so that the electric locomotive is prevented from carrying out operations such as receiving and sending a coke tank, receiving red coke and the like.

The application example is as follows: referring to fig. 1, the I-shaped resistor according to the present scheme is manufactured, wherein a measuring resistor 3 is connected between an upper T-shaped conduit 1 and a lower T-shaped conduit of the I-shaped resistor, and two ends of the I-shaped resistor are respectively connected with other I-shaped resistors through wires 4. In this embodiment, if the number N of the coke oven liners is 30, the resistor system is formed by connecting 30 h-shaped resistors with the same number as the coke oven liners in parallel, and each resistor has a resistance of 4.8K Ω, then the resistance of the parallel resistorsThe I-shaped resistor is arranged on the outer side of each coke tank lining plate and is insulated from the metal of the lining plate to form an independent electric loop, once the lining plate falls off, the I-shaped resistor on the lining plate can be separated from the current circuit, and the subsequent parallel resistor circuit is enabled to be connectedAnd (5) disconnecting. And (3) connecting the first I-shaped resistor of the first coke tank lining plate from a coke tank side joint 5, sequentially connecting the I-shaped resistors on each lining plate in parallel according to the mode shown in figure 2, connecting the I-shaped resistors on the first layer in parallel, connecting the I-shaped resistors on the second layer, and performing secondary pushing until the I-shaped resistors are merged into the last I-shaped resistor.

Designing and installing a signal detection device by referring to fig. 3, and establishing an interlocking relation between the signal detection device and a coke tank rotating band-type brake and a coke receiving and sending tank mechanism in a vehicle-mounted control system: in the process of rotating and focusing the coke tank, when the coke tank starts to rotate and open the band-type brake, the vehicle-mounted control system controls the cylinder electromagnetic valve to contract, so that the cylinder drives the trolley side pressure head to be separated from the lateral contact of the coke tank, the rotation of the coke tank is realized, and the damage of a connecting cable is avoided; when the coke tank is positioned and the band-type brake is closed, the vehicle-mounted control system controls the cylinder electromagnetic valve to extend, so that the cylinder drives the trolley side pressure head to be connected with the coke tank side contact, and the conduction of a detection circuit is realized. In the process of receiving and sending the coke tank, when the APS clamps and receives a car locking signal, the vehicle-mounted control system controls the cylinder electromagnetic valve to contract, so that the cylinder drives the trolley side pressure head to be separated from the coke tank side contact point, the lifting of the coke tank is realized, and the damage of a connecting cable is avoided. When the APS unlocking and locking signal disappears and a coke tank signal is detected, the vehicle-mounted control system controls the cylinder electromagnetic valve to extend, so that the cylinder drives the trolley side pressure head to be connected with a coke tank side contact point, and the conduction of the detection circuit is recovered.

The method for judging the abnormal state of the coke tank by the control system comprises the following steps: after the coke tank stops rotating or the flow of receiving and sending the coke tank is finished, the signal detection device is linked with the closing of a band-type brake of the rotary coke tank or an APS clamping signal, an I-shaped resistor connected in parallel on the coke tank is connected into a control loop of a vehicle-mounted control system, and a resistor R0 which is connected in series with the control loop and is arranged on the side of the electric locomotive is 1.2K omega. Under the condition that the lining plates do not fall off, the total resistance value of the parallel resistors is calculated according to a parallel resistor resistance value calculation formulaThe measured signal is a current milliamp signalIf the X is less than or equal to N, lining board hairIf the strip is produced, the I-shaped resistor on the lining plate can be separated from the current circuit, and the subsequent parallel resistor circuit is disconnected, and the resistance value of the parallel resistor on the circuit is at the momentThe measured signal is milliamp signalWill be provided withSubstituting into a formula to calculate to obtainIf the measured I1 of the control system is 16MA, the measured value isNamely, the control system can calculate that the 17 th lining plate is fallen according to the detected current value, and can send out an alarm to an operator to perform corresponding automatic interlocking protection, so that the electric locomotive is prevented from carrying out operations such as receiving and sending a coke tank, receiving red coke and the like.

It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent modifications and substitutions based on the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.