JPH0263171B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a furnace temperature measuring device for a coke oven. Specifically, the present invention relates to an improvement in a device that measures the furnace temperature of a coke oven through a frie nozzle while a measurement vehicle equipped with a thermometer that utilizes thermal radiation is run over the coke ovens.

Generally, a coke oven is formed of a furnace group in which independent carbonization chambers and combustion chambers are arranged alternately.

On the other hand, the carbonization time from when the coal is charged into the carbonization chamber until it is fired is influenced by external conditions such as the moisture content and particle size of the charged coal, but most of it is influenced by the temperature of the combustion chamber. It is determined accordingly. Therefore, temperature measurement in the combustion chamber is one of the important requirements for controlling coke production conditions.

Conventionally, combustion chamber temperatures have been measured manually using optical pyrometers, and have to be measured over a relatively short period of time. Moreover, this temperature measurement requires a considerable amount of time even for an experienced person to measure one location, it is not easy to measure all the combustion chambers in a short time, and there are drawbacks such as large human errors.

Temperature measurement methods that do not use an optical pyrometer include a method of measuring by installing a thermocouple in the space above the combustion chamber, or a method of measuring the temperature by installing a thermocouple in the upper space of the combustion chamber, or a method of measuring the temperature by installing a thermocouple inside the refractory at the top of the partition wall between adjacent combustion chambers or at the top of the hairpin. There is a method of measuring by installing a thermocouple. However, with the former method, the measured value pulsates due to various complex heat transfer mechanisms as well as disturbances in the draft and gas flow velocity, making it difficult to grasp the value as a representative value of the furnace temperature. There is. In addition, the latter method measures the temperature inside the refractory, so it has the disadvantage that the measured value lags behind the temperature change inside the combustion chamber. This is not a satisfactory method of measurement.

Therefore, the present inventors measured the furnace temperature through the Furyu nozzle while driving a measurement vehicle equipped with a thermometer that uses thermal radiation over the coke ovens, and sent the obtained measurement data sequentially to the control room via wireless communication. He invented and first proposed a furnace temperature measurement device that processes data using the following methods.

However, this system has the disadvantage that it is necessary to install a large number of antennas in order to prevent radio interference caused by over-the-reactor working vehicles, etc., and maintenance of the antennas requires a great deal of labor and expense. Furthermore, the reliability of temperature measurement data decreases if noise generated from working machines or the like is mixed in, so there is also the drawback that measures to prevent noise mixing are expensive. Therefore, as a result of further studies to resolve these difficulties, we decided to use an insulated trolley as a power source for running the measurement vehicle, etc., and to prevent signals other than temperature measurement data, such as temperature measurement start, temperature measurement stop, and failure during temperature measurement. The most preferable method is to sequentially transmit these signals using a power line transmission mechanism using an insulated trolley, and to temporarily store the temperature measurement data in a storage device mounted on the measuring vehicle and then transmit it all at once after the temperature measurement is completed. Based on this finding, the present invention was completed.

That is, the gist of the present invention is to have a measuring car equipped with a thermometer that utilizes heat radiation, which receives electricity from an insulated trolley, run over the coke ovens, and measure the temperature of the coke oven using the thermometer through a friu nozzle. In a device for measuring temperature, the device comprises a temperature measurement data accumulation mechanism, a storage mechanism mounted on the measurement vehicle for storing temperature measurement data obtained during at least one run of the measurement vehicle, and the accumulation mechanism and the temperature measurement data storage mechanism. A reception/transmission mechanism is provided for each measurement vehicle to send and receive signals, a temperature measurement end detection mechanism is provided, and based on the signal from the detection mechanism, the temperature measurement data stored in the storage mechanism is collectively transmitted to the accumulation mechanism. A coke oven furnace temperature measurement device characterized by comprising a transmission mechanism that serves as the reception mechanism or is provided separately.

Hereinafter, the present invention will be explained based on the drawings.

Fig. 1 is an overview of the device of the present invention, Fig. 2 is a sectional view taken along the line A-A in Fig. 1, Fig. 3 is a diagram showing another example of the arrangement of the rail and insulated trolley, and Fig. 4 is a receiving and transmitting mechanism. FIG. 5 is a circuit diagram of the transmitter and receiver in the transmitter/receiver mechanism, and FIG. 6 is an explanatory diagram showing the outline of the storage mechanism. In these figures, 1 is a measuring car, 2 is a rail laid in the direction of the coke oven top 5, 3 is an insulated trolley installed along the rail 2, and 6 is a tower mounted on the measuring car 1. 7 is a collector, 8 and 12 are transceivers, 9 is a data collection mechanism, preferably a so-called computer, and 10 is a fixed station connected thereto and serving as a terminal of a transmission mechanism.

In a coke oven, generally, half of the burners in the combustion chamber that are connected in the longitudinal direction of the combustion chamber burn, and after a predetermined period of time, the other half starts burning and the combustion chamber that was burning until then stops. Combustion is performed by alternating these steps. Furthermore, if the lid of the Furyu nozzle is opened during combustion, the temperature of the flame inside the combustion chamber must be measured, making it impossible to measure the desired temperature of the bottom brick surface. Further, the temperature of the combustion chamber is low at the extruder side, increases with a certain temperature gradient toward the exit side from the kiln, and becomes the highest at the exit side from the kiln. The average temperature of the combustion chamber is at the center in the furnace length direction. Therefore, measuring the indoor temperature from the Furyu nozzle closest to the center on the side where combustion is stopped will not be affected by the combustion in the room, and will also measure the average temperature of the combustion chamber. Therefore, it is preferable. Therefore, it is preferable to measure the row of Furyu nozzles that are closest to the center and lined up in the direction of the furnace block after combustion has stopped.

For this reason, it is desirable that the rail 2 be installed at a position where the thermometer 6 passes directly above the above-mentioned Friyu nozzle 15 to be measured. Although the shape of the rail 2 can be arbitrarily selected, an inverted L-shape as shown in FIG. 2 is preferable in relation to the installation of the insulated trolley 3.

The insulating trolley 3 has continuous openings that can collect current by protecting the conductor with an insulating material and allowing the current collector 7 to travel smoothly in contact with the conductor. As a conductor, copper, copper alloy, aluminum, aluminum alloy, etc. have high electrical conductivity and strong mechanical strength.
A material with excellent heat resistance and natural abrasion resistance is used. The shape of the conductor is circular in cross section, circular grooved, square,
A rectangular columnar or tubular shape is used. A tubular shape allows cooling fluid to flow through it, so it is convenient for suppressing the rise in temperature of the conductor.

The insulator may have an insulation resistance of 5 MΩ or more and a heat resistance of 100°C or more, preferably 120°C or more, such as fluororesin, silicone resin,
polyester, polycarbonate, polyamide,
Synthetic resins such as polyphenylene oxide, polypropylene, epoxy resin, and vinyl chloride resin, synthetic rubbers such as neoprene, butyl rubber, and silicone rubber, and ceramic products such as glass, ceramics, and porcelain are used. These materials may be used singly or in combination or in a layered manner, but those obtained by blending or layering a fibrous ceramic product with a synthetic resin are superior in terms of mechanical strength and heat resistance.

The insulating trolley 3 is installed at a height of 50 cm or less above the furnace, preferably 15 cm or less, and particularly preferably at a height equal to or lower than the upper surface of the rail 2, since if it is too high, it will be a hindrance to the work on the furnace. The construction is carried out using hangers such as insulators (not shown), but it is safe to fix the insulating trolley so that its opening faces downward or sideways, especially downward or facing the direction of the rail 2. This is important. Fifth
The figure shows the case where it is installed facing downward, and FIG. 3 shows the case where it is installed facing the direction of the rail 2.

The end of the insulated trolley 3 is connected to a power source (not shown) and to a transceiver 8 for exchanging signals between the data collection mechanism 9 and the measurement vehicle 1.

The measuring car 1 includes a thermometer 6, a collector 7, and a transmitter/receiver 12
and a storage mechanism 13, and is driven by electricity taken in from the current collector 7, and is configured to reciprocate on the rail 2. The collector 7 is a plate-shaped or wheel-shaped thing made of a material such as sintered alloy, metallic carbon, or copper alloy, and is installed so as to be able to contact the conductor at the opening of the insulating trolley 3. As the thermometer 6, for example, a radiation thermometer such as a monochrome thermometer, a two-color thermometer, or a three-color thermometer, or a thermometer that uses heat radiation such as an infrared thermometer is used.

The transmitters/receivers 8 and 12 are for exchanging signals between the collecting mechanism 9 and the measuring vehicle 1, and are preferably used together with the insulated trolley 3, or in some cases, a separate line may be provided for the transmitting/receiving mechanism. Configure.

The receiving and transmitting mechanism includes a transmitter/receiver 8 as shown in FIG.
The transmitter 22 and receiver 21 are connected to, for example, an insulated trolley 3 via a capacitor (not shown),
On the other hand, it is constructed by connecting the receiver 16 and transmitter 17 of the transceiver 12 to the current collector 7 via a capacitor (not shown). These transmitters 1
7, 22 and the receivers 16, 21 are composed of a DC power supply 23 and a modulation circuit 24 or a demodulation circuit 25, for example, as shown in FIG.

Note that the transceivers 8 and 12 and the insulating trolley 3 may be connected in a non-contact manner through an antenna instead of the above-mentioned capacitor. The storage mechanism 13 includes, for example, a RAM 1 as shown in FIG.
8 and ROM19 semiconductor memory storage section, CPU
It is composed of 20 calculation units and a transmitter/receiver 12.
Note that in addition to the storage unit, a magnetic tape device, a magnetic disk device, a magnetic bubble device, an optical disk device, etc. can be additionally used.

In addition, in FIG. 6, a portion 12' surrounded by a broken line is a portion constituting a bulk transmission mechanism for temperature measurement data, which may be used also by the transmitter/receiver 12 of the measurement vehicle or may be provided separately. 24' is a modulation circuit for transmitting data, and 25' is a demodulation circuit that receives commands to input data, transmit data, or stop them.

Next, a method of measuring temperature using the apparatus of the present invention configured as described above will be explained. First of all,
When the measuring vehicle 1 is in contact with the first limit switch 11 constituting the temperature measurement end detection mechanism, a temperature measurement start signal is sent from the integration mechanism 9 to the transmitter/receiver via the transmitter/receiver 8, the insulating trolley 3, and the collector 7. Sent to 12. The measuring wheel 1 clears the memory mechanism 13 in response to this command and starts running at a constant speed in the direction of the second limit switch 4. As the measuring car 1 advances, the fuel lid 14 of the combustion chamber on the side where combustion is stopped
opening, storing in the storage mechanism 13 a signal corresponding to the temperature and temperature measurement time obtained when the thermometer 6 passes directly above the nozzle 15, and closing the nozzle 14 are sequentially repeated.

That is, in FIG. 6, when a sampling start signal is input from the demodulation circuit 25', the analog data from the thermometer 6 is converted into a digital value by the A/D converter 26, and is loaded into the RAM 18. For example, only the maximum value of data obtained from one fly-by is stored in the RAM 18.

Next, when the measuring wheel 1 detects the second limit switch 4, the measuring wheel 1 is stopped. Then, when the fuel supply path of the combustion chamber is switched, the transmitter/receiver 12 is transferred from the integration mechanism 9 in the same manner as described above.
A temperature measurement start signal is sent to. Then, the measuring wheel 1 starts running at a constant speed in the direction of the first limit switch 11, and in the same manner as described above, opens the lid, measures the temperature, and closes the lid of the combustion chamber on the side where combustion is stopped. Repeat sequentially. And measurement car 1
When detecting the first limit switch 11, the measuring wheel 1 is stopped. Transmission of the temperature measurement data stored in the storage mechanism 13 is normally performed as follows.
That is, a signal from the temperature measurement end detection mechanism when the measuring wheel detects the limit switch 11 is transmitted to the accumulation mechanism 9, and based on the signal, a data transmission signal from the accumulation mechanism 9 is sent to the data storage mechanism 1 at an appropriate point.
Issued on 3rd.

In FIG. 6, when this signal is input from the demodulation circuit 25', the CPU 20 sequentially reads the data in the RAM 18, passes through the modulation circuit 24', and inputs it to the integration mechanism 9 by wire or wireless, preferably through the fixed station 10. Ru. Note that when transmitting data wirelessly, an ultrasonic method is preferable. Further, the temperature measurement data can also be input to the accumulation mechanism 9 by manually transporting the recording medium. Furthermore, the sampling start signal, data transmission signal and
The data signal in the RAM 18 is transmitted to the demodulation circuit 25'
Alternatively, it can be input or output without going through the modulation circuit 24'.

Further, as the temperature measurement end detection mechanism, a method using a limit switch as described above is convenient, but the present invention is not limited to this. Furthermore, in addition to the method of inputting data to the accumulating mechanism 9 each time the temperature sensor moves back and forth between the first limit switch and the second limit switch as described above, the data may be inputted each time the temperature measuring operation is completed during one-way travel.

Therefore, in the present invention, the data accumulation mechanism 9 preferably has a fixed station 10 which is a reception or input terminal for temperature measurement data, and a station for receiving and transmitting various signals to and from the measurement vehicle 1. The data storage device preferably has the configuration shown in FIG. 6, but is not limited thereto.
Various known systems can be used as long as they are systems that store or record signals from thermometers obtained during a certain period of temperature measurement work. Also, the receiving and transmitting mechanism for transmitting and receiving signals between the accumulation mechanism and the measuring vehicle is used to receive and transmit a starting command for the measuring vehicle, a temperature measurement end signal, a data transmission command, a command to delete data stored in the storage mechanism, etc. The transmitter/receiver 8 of the integrated mechanism, the transmitter/receiver 12 of the measuring vehicle, and a trolley wire or a separately provided line or radio (in this case, each of the transmitter/receivers 8 and 12 is attached with a wireless transmission device such as a high frequency oscillator) ).

The temperature measurement end detection mechanism is as described above, but preferably the detection signal is transmitted to the transmission mechanism via the transmitter/receiver 8 of the integrated mechanism and/or the transmitter/receiver 12 of the measurement vehicle as described above.

Although the above-mentioned receiving mechanism may also serve as the bulk transmission mechanism for temperature measurement data, it is more preferable to provide a fixed station 10 separately from the transmitter/receiver 8 in the integration mechanism in order to avoid instability factors due to the transmission via the trolley wire. Furthermore, a transmitter/receiver 12' dedicated to data transmission is provided separately from the transmitter/receiver 12 on the measuring vehicle side, and includes equipment and systems for wired or wireless transmission between the transmitter/receiver 12'. however,
The transmitter/receiver 12' on the measuring vehicle side can also be used as the transmitter/receiver 12 for the transmitter/receiver mechanism. Most preferably, the wiring is connected between the fixed station 10 and the measuring wheel 1 at the position where the measuring wheel 1 stops in contact with the first limit switch 11, and the transmission mechanism is completed.

As described in detail above, since the device of the present invention uses an insulated trolley to supply electricity, the weight of the measuring vehicle is lighter than that using a battery. Battery charging operation and battery maintenance work are not required.
Furthermore, when alternating current is used as a power source, there is an advantage that an easy-to-maintain alternating current motor can be used. Furthermore, safety can be ensured against electric shock for workers on the reactor, and there is no obstacle to the work on the reactor. It is even more effective in terms of safety and maintenance if power is supplied to the insulated trolley only during the temperature measurement period. Furthermore, the temperature measurement data is stored and sent all at once after the temperature measurement is completed.
There is no reduction in reliability due to noise contamination, and this is an extremely excellent device for continuous temperature measurement of coke oven combustion chambers.

[Brief explanation of drawings]

Figure 1 is an explanatory diagram showing the outline of the device of the present invention, Figure 2
The figure is a cross-sectional view taken along the line A-A in Figure 1, Figure 3 is a diagram showing another example of the arrangement of the rail and insulated trolley, Figure 4 is an explanatory diagram showing an overview of the receiving and transmitting mechanism, and Figure 5 is a diagram showing an overview of the receiving and transmitting mechanism. A circuit diagram of a transmitter and a receiver of the transmission mechanism, and FIG. 6 is an explanatory diagram showing an outline of a part of the storage mechanism and transmission mechanism. 1: Measuring car, 2: Rail, 3: Insulated trolley,
4: second limit switch, 5: coke oven top, 6: thermometer, 7: collector, 8, 12: transmitting/receiving mechanism, 9: integrating mechanism, 10: fixed station,
11: First limit switch, 12': Transmitter/receiver of transmission mechanism, 13: Temperature measurement data storage mechanism, 14:
Coke oven frie lid, 15: Coke oven frie nozzle, 16, 21: Transmitter/receiver 12 and 8
receivers 17 and 22, respectively: transceivers 12 and 8
a receiver transmitter, 18: a storage mechanism 13, respectively;
RAM, 19: ROM of the storage mechanism 13, 20: Arithmetic unit (CPU) of the storage mechanism 13, 23: DC power supply,
24: Modulation circuit of the reception and transmission mechanism, 24': Modulation circuit of the transmission mechanism, 25: Demodulation circuit of the reception and transmission mechanism, 2
5': demodulation circuit of the transmission mechanism, 26: analog/digital converter.

Claims (1)

[Scope of Claims] 1. A measuring car equipped with a thermometer that utilizes heat radiation, which receives electricity from an insulated trolley, is run over the coke ovens, and the temperature of the coke oven is measured by the thermometer through a friu nozzle. In the measuring device, the device includes a temperature measurement data accumulation mechanism, a storage mechanism mounted on the measurement vehicle for storing temperature measurement data obtained during at least one run of the measurement vehicle, the accumulation mechanism and the measurement device. A receiving/transmitting mechanism provided in each vehicle for transmitting and receiving signals between vehicles, a temperature measurement end detection mechanism, and a temperature measurement data stored in the storage mechanism are collectively transmitted to the accumulation mechanism based on the signal from the detection mechanism. 1. A coke oven furnace temperature measuring device, comprising a transmission mechanism that serves as the transmitting and receiving mechanism, or is provided separately. 2. Claims characterized in that the temperature measurement data transmission mechanism is installed at the end of a coke oven and transmits wirelessly between a fixed station connected to the accumulation mechanism and the measurement vehicle. The device according to paragraph 1. 3. The temperature measurement data transmission mechanism is characterized in that the temperature measurement data is transmitted by wire via a connector between a fixed station installed at the end of the coke oven and connected to the accumulation mechanism and the measurement vehicle. An apparatus according to claim 1. 4. The device according to any one of claims 1 to 3, wherein the temperature measurement data storage mechanism inputs and stores a pulse immediately before reading the temperature measurement data. 5. The device according to any one of claims 1 to 4, wherein the insulating trolley is protected by an insulator having a heat resistance of 100° C. or higher. 6. The device according to any one of claims 1 to 5, wherein the insulating trolley is installed with its opening facing downward or sideways.