RU2357217C1 - Measurment facility of object heating temperature in iron-and-steel furnaces and facility operation mode - Google Patents

Abstract

FIELD: metallurgy.

SUBSTANCE: invention relates to metallurgy, to control devices of temperature conditions in chamber and pusher-type furnace of metals hot-rolling mill, and also for control of the temperature in other well-known hot mediums, allowing temperature up to 1600°C. Facility contains a body, where it is located temperature recorder, herewith body is implemented with double-layer walls, between which it is formed vacuum. Thermometeres with recorder are connected, located out of the body. The last ones are located in holes of object at different levels. Facility has a thermos - instrument container with cover, where a recorder body is located, the first bottom evaporator with tank, where an instrument container is located, and the second evaporator, closing bottom evaporator. It is provided facility operation mode, including implementation in the object of holes of different depth, location and fixation in holes of object of thermometers with measuring junction, evaporators charge by liquid coolant, for instance, water, facility assemblage, for what recorder is located in instrument container, which is installed in tank of one evaporator and tank is closed by second evaporator, then evaporators are heat-insulated, after what facility is fixed on object in run position, facility is displaced with the object in hot furnace and it is registered temperature of moving in furnace object.

EFFECT: reliability improvement of facility running and measurement accuracy of temperature, and also simplification of facility assemblage, increasing of its heat stability and expansion of workability in furnaces with increased temperature.

6 cl, 5 dwg

Description

The technical solutions presented in this description relate to the field of metallurgy, in particular, to means for controlling temperature conditions in chamber and continuous furnaces of hot rolling mills. These technical solutions can be used to control temperature in other known hot environments having temperatures up to 1600 ° C.

Known devices for recording the temperature of products and test objects in metallurgical furnaces, each of which includes a temperature recording device in the housing, a heat shield to protect the device from high temperature, thermal insulation located between the housing and the housing, and other means that reduce the thermal effect of the furnace to a temperature recording device, the device including thermocouples installed on the product to measure the temperature of the heated product, which e together with the product pass through the furnace and provide registration of the temperature of the product along the entire path of passage through the furnace [1-3].

Moreover, in [1] thermocouples (thermocouples) are installed in the holes passing through the furnace products (slabs, ingots), while the measuring device is located outside the furnace and, accordingly, the thermocouples are connected to the measuring device with thermocouples, the length of each of which is significant having a negative impact on the reliability of the device, the complexity of the measurement work and the accuracy of the measurement.

These disadvantages are eliminated in devices [2-3], each of which includes a temperature recorder in the housing with storage means, the housing being located in a heat-resistant container having a container filled with water, while the device provides operating conditions for the recorder within 100 ° C the length of time the recorder is in the furnace at high temperature, determined by the duration of the evaporation of water from the container. In this regard, the estimated duration of the recorder in the furnace is 5, 6 and 7.5 hours at a temperature of 1400 ° C, 1200 ° C and 1000 ° C, respectively.

The recorder is powered by a battery. The recorder is mounted on a slab, cable thermocouples are fixed in special holes of the slab, the cold junctions of which are connected to the measuring device. According to a predetermined program, thermocouples are interrogated through the multiplexer. The signal from the thermocouple after analog-to-digital conversion is recorded in the memory. The slab along with the heat-resistant capsule moves through the furnace and the temperature of the metal is measured. After the slab with the recorder leaves the furnace, the obtained values are read from the electronic memory of the storage medium.

Due to the increasing requirements for devices for measuring temperature in furnaces, known devices do not meet the indicated conditions for staying in furnaces when heating slabs 315 and 400 mm thick, as well as the conditions for the device to stay during heating billets in chamber furnaces up to 20 hours. At the same time, insufficient reliability of measuring the temperature of slabs due to shocks, vibration and shock loads acting on the slabs when they are moved through a pusher furnace or through a furnace with walking beams or a hearth was revealed. As a result, there was a need to use specialized electronic measuring devices, providing the possibility of their functioning at temperatures up to 90 ° C.

In practice, there are known systems for recording temperature profiles in metallurgy during the heating of a workpiece, for example, DATAPAQ temperature profile systems used to bring the production process in metallurgical furnaces closer to the ideal process and, accordingly, to ensure the possibility of obtaining a given quality of products in the furnaces.

Each DATAPAQ temperature recording system includes a temperature recording device, a heat shield to protect the device from high temperature, thermocouples for measuring the temperature of the heated product, while the thermocouples come in contact with the heated product and are attached to it together with the product temperature recording device, the product together with the temperature registration device and thermocouples jointly pass the furnace space at high temperatures, and during joint passage through the furnace registration unit stores the value of the measured temperature, and after the registration unit exit from the furnace temperature device data is inputted into the computer which the program analyzes them and provides recommendations for optimizing process to improve product quality or to minimize energy consumption [4].

A device for measuring temperature is known, including a container with an opening top, a container lid, the container made with double walls and a container with a temperature recorder placed in it, heat-insulating material is located between the walls of the container, and from the top to the bottom of the container respectively, a fabric heat-insulating material, a lower elastic layer, an upper elastic layer, two heat-insulating layers and an upper elastic insert [5].

A heat-resistant casing of a device for controlling the temperature of a furnace and a product moving in it is known, comprising a layer of low-temperature insulation and successively arranged layers of high-temperature insulation and refractory material, the casing being peculiar in that the casing is provided with a water jacket with a thickness of 0 to increase its heat-insulating properties and reduce its dimensions. , 2-0.4 of the total thickness of the casing connected to the atmosphere and located between the layers of low-temperature insulation, and all layers are installed relative to sheniyu to one another with a gap equal to the thickness of 0.02-0.06 housing [6].

A known method and device for measuring temperature for furnaces, comprising a first inner case with a temperature recorder in its cavity, a second outer case with a closed refractory water-absorbing layer fixed around it and heat insulators located in two layers between the outer and inner case, and in the cases and holes are made in the heat insulator, in which electric lines are located that connect the temperature sensors to the temperature recorder [7].

The known method and device for measuring the temperature of the product in the furnace, the method is based on the joint passage of the furnace space protected by insulation of the measuring device and the heated product, and the device for implementing the method contains measuring sensors fixed to the product, which, during passage in the furnace, store the measured values temperature [8].

A device is known for measuring the heating temperature of slabs in a metallurgical heating furnace, comprising a temperature recorder installed in the housing and connected to temperature sensors, an instrument container in which the housing is located, evaporators, in one of which there is an instrument container, the cavity of which is filled with heat insulating material, each the evaporator is made with double closed walls, between which a closed cavity filled with water is formed, the evaporators are located in a closed a thermal protective shell, which is located outside in ceramic mats, while the evaporator tubes are located outside the instrument container and communicated in the working position of the device with the cavity of the thermal protective shell, the cavity of this shell is also filled with thermally insulating material, and temperature sensors are located and fixed in the channels of the slabs [9 ].

This device provides a method for its use, which consists in performing operations in the following sequence.

Holes of different depths are performed in a slab in temperature control sections and a U-shaped socket or cutout for a measuring device including a removable measuring device STOR and its thermal insulation system located in the instrument container of the device is also made at one end of the test slab. Temperature probes or thermocouples that act as temperature sensors in the slab array are fixed in the slab openings. Stack the heat insulating mat in the indicated nest of the slab. The device container of the device is fixed in the working position in the indicated slot on the heat-insulating mat. Fill both evaporators with water. The instrument container is wrapped with the ends of a thermally insulating mat, which is then impregnated with water. Install the STOR meter in the instrument container and connect the temperature probes to the meter. The space between the measuring device and the outer edges of the instrument container is filled with ceramic wool. Close the instrument container with its lid. Then the instrument container is insulated from the side of the lid with a ceramic wool insulating mat. The mats are fixed with wire to prevent them from sliding off the instrument container while the device is moving through the furnace [9].

The closest technical solution, having similar features with the device described in this description, and the prototype of the device is a device for measuring the heating temperature of an object in metallurgical furnaces, containing an electronic temperature recorder installed in the housing, connected to batteries located in the housing and located outside the housing flexible cable thermoelectric thermometers, which are temperature sensors and are fixed in the holes of the object at different ur On the other hand, an instrument container with a lid in which the recorder case is located, a first evaporator with a container in which the instrument container is located, and a second evaporator covering the first evaporator, each evaporator having double closed walls, between which a closed cavity filled with refrigerant is formed, pipes evaporators, one of which is intended for filling refrigerant into the evaporator, and the other nozzle is for exiting the evaporator of air and steam, an external thermal insulation around the evaporators Yator, which is wound around the heat-resistant wire forming the body [9].

The prototype of the method is a method of operating a device for measuring the heating temperature of an object in metallurgical furnaces, comprising making holes of different depths in the object, placing and fixing temperature sensors in the object’s holes, filling the evaporators with liquid refrigerant, for example water, assembling the device, during which the recorder is placed in the instrument a container that is installed in one evaporator, thermal insulation of the device, fixing it on the object, moving the device together with the object in a hot oven and registration of temperature of an object moving in the furnace [9].

Presented as a prototype device and method of its operation do not fully meet the requirements of the reliability of the device and the accuracy of temperature measurement. Another significant drawback of these technical solutions is the relatively high complexity of the device assembly and the unsatisfactory exposure time of the device in a hot furnace when measuring the temperature of an object in cases of high temperatures, which significantly limits the possibility of using the device.

The technical result of the device and the method of its operation is to increase the reliability of the device and the accuracy of temperature measurement. Another technical result is to simplify the assembly of the device, increase its thermal stability and expand the possibilities of use in furnaces with high temperature.

The indicated result was obtained by a device for measuring the heating temperature of an object in metallurgical furnaces, which contains an electronic temperature recorder installed in the housing, connected to power elements located inside the housing and flexible cable thermoelectric thermometers located outside the housing, the working junctions of which are located in the openings of the facility at different levels , instrument container with a lid in which the recorder case is located, the first evaporator with a container in which n the instrument container, and the second evaporator closing the lower evaporator, each evaporator is made with double closed walls, between which a closed cavity filled with the refrigerant is formed, evaporator tubes for filling the refrigerant into the evaporator and an external heat insulator located around the evaporators, around which a heat-resistant wire is wound, forming a frame, while the second evaporator is installed above the first evaporator, the capacity of the latter facing the open part of the screw x, the second evaporator is installed above the first evaporator, the evaporator tubes are located outside the frame and communicated in the working position of the device with the hot medium of the furnace, in the internal cavity of the recorder housing, near the recorder, there is a thermal accumulator, the cavity of the recorder housing is filled with a thermal insulator fixing the recorder, batteries and thermal accumulator in the recorder housing, the cavity between the walls of the instrument container and the recorder housing and between the outer wall of the lower evaporator and the frame Full thermal insulator between the inner wall of the evaporator and the lower wall of the instrument container formed by a closed air space, which houses an elastic suspension instrument container.

The device includes a recess in the side wall of the instrument container, forming a window with the container lid closed, in which flexible cable thermoelectric thermometers are located.

The device includes lower springs associated with the inner wall of the lower evaporator and the lower wall of the instrument container, and side springs that are associated with the side walls of the instrument container and the inner side walls of the lower evaporator, wherein the springs form an elastic suspension.

The device includes channels in the upper part of the lower evaporator and in the external thermal insulator, as well as a hole made in the frame, while the longitudinal axes of these channels, holes and windows of the instrument container are aligned and flexible cable thermoelectric thermometers are located in them.

The device contains a ceramic fiber felt forming a closed shell of an external thermal insulator around the evaporators, a heat insulator in the internal cavity of the recorder case is made of foamed heat-resistant cured material, a heat insulator in the cavity between the walls of the instrument container and the recorder case is made of heat-resistant basalt fiber wool.

The indicated result was also obtained by the method of operation of a device for measuring the heating temperature of an object in metallurgical furnaces, comprising making holes of different depths in the object, placing and fixing temperature sensors in the object’s holes, filling the evaporators with liquid refrigerant, such as water, assembling the device, for which the recorder is located in the instrument the container, which is installed in the tank of one evaporator and close its tank with a second evaporator, then the evaporators are thermally insulated, after which the device they are fixed on the object in the working position, the device is moved together with the object in the hot oven and the temperature of the object moving in the furnace is recorded, while during the assembly of the device, the recorder is first connected with flexible cable thermoelectric thermometers and the recorder case with flexible cable thermoelectric thermometers is placed in the instrument container, refrigerant is frozen in the evaporators in the minus temperature range of -10 ° С ÷ -50 ° С, the first evaporator is placed with the capacity up, in which the instrument container is positioned and fixed, then the first evaporator is closed with a second evaporator on top and the evaporators are connected to each other in one unit of the device, the assembled specified unit is held at a given time interval at a natural temperature and heat is removed from the recorder by frozen evaporators until the temperature of the recorder and the instrument is equalized container, at the same time in a specified time interval, the evaporators are thermally insulated from the external environment by an external heat insulator, then installed a device with a cooled recorder located in the housing and the instrument container is installed and fixed at the facility, the working ends of the flexible thermoelectric thermometers connected with the recorder are installed in the holes in the facility, an object with a cooled device is inserted into the hot oven and moved into the oven, and when the minus the temperature of the recorder to the plus temperature and the recorder is heated, heat is removed from it inside the case, which is accumulated in the case by a thermal accumulator, and when moving the device In the furnace, dynamic stresses arising on the recorder case are damped by elastic vibrations of the instrument container relative to the lower evaporator.

Figure 1 shows a schematic illustration of a device for measuring the heating temperature of an object in a metallurgical furnace,

In Fig.2 - the upper evaporator,

Figure 3 - the cover of the instrument container,

Figure 4 - instrument container,

Figure 5 - lower evaporator.

A device for measuring the heating temperature of an object comprises an electronic temperature recorder 1 (Fig. 1), electrically connected to power elements 2 and to flexible cable thermoelectric thermometers 3, which perform the functions of temperature sensors in this particular embodiment of the device. The thermometers 3 are connected to the working junction 4 of flexible cable thermoelectric thermometers 3. The recorder 1 and the power elements 2 are installed in a vacuum instrument case-thermos 5 (hereinafter referred to as “case 5”). Case 5 is closed by a cover 6.

The housing 5 has double walls, which are conventionally shown by lines. A vacuum is formed between the walls of the housing 5. The case 5 of the recorder is located in the instrument thermos container 7 (hereinafter referred to as the “instrument container”), closed by a lid 8 of this container. A recess 9 (Fig. 4) is made in the side wall of the instrument container 7, forming a window 10 with a closed lid 8 (Fig. 1), in which flexible cable thermoelectric thermometers 3 are located.

The instrument container 7 is installed in the first lower evaporator 11 with double closed walls 12 and 13, between which a closed cavity 14 is formed, filled with the refrigerant 15 in the working position of the device. The first pipe 17 is made in the upper wall 16 of the lower evaporator 11 for pouring into the cavity 14 of the evaporator 11 refrigerant 15 and the second pipe 18 to exit from this cavity of air when pouring refrigerant into it, as well as to exit steam from the cavity 14 during operation of the device.

The device includes a second upper evaporator 19 mounted above the first lower evaporator 11 with double closed walls 20 and 21, between which a closed cavity 22 is formed, filled with refrigerant 23. Liquid substances such as water, saline and other known solutions serving can be used as a refrigerant. to accumulate cold during freezing.

In the lower evaporator 19, an internal cavity 24 (FIG. 5) is made under the instrument container 7 installed in this cavity (FIG. 1). In the upper wall 20 of the upper evaporator 19, a first pipe 25 is made for pouring refrigerant 23 into the cavity 22 of this evaporator and a second pipe 26 for exiting the cavity 22 of the upper air evaporator 19 during the filling of the refrigerant 23 therein, and also for the steam to escape from the cavity 22 into device operating time.

The evaporators are located in a closed external thermal insulator 27 in the form of a thermal protective shell made in this example of ceramic fiber felt around which a heat-resistant wire is wound, forming a frame 28. The mentioned pipes 17 and 18 of the lower evaporator 11 and the pipes 25 and 26 of the upper evaporator 19 are located outside frame 28 and in communication with the surrounding hot furnace environment in the working position of the device and with the atmosphere in the inoperative position of the device.

The device comprises a thermal accumulator 29, which is a solid solid element made of lead and mounted near the recorder 1. In this example, the device has a thermal accumulator mounted above the registrar 1.

Working junctions 4 of flexible cable thermoelectric thermometers 3 temperatures are located and fixed in the channels 30 of the object 31. The object is a metal billet designed for its processing in a metallurgical furnace.

The internal cavity 32 of the recorder housing 5 is filled with a heat insulator 33 made in this example of a device made of foamed heat-resistant cured material, by which the recorder 1 is fixed in the housing 5 from movement. This material is introduced into the housing 5 in a semi-liquid phase.

The cavity 34 of the instrument container 7 is filled with a heat insulator 35, which in this example is a heat-resistant basalt fiber wool.

The cavity 36 between the outer wall 12 of the lower evaporator 11 and the frame 28 is filled with the aforementioned external heat insulator 27.

The lid 8 (Fig.3) of the instrument container 7 is fixed on its side walls with flanges 37.

Between the inner wall 13 (Fig. 1) of the lower evaporator 11 and the wall of the instrument container 7, a closed air space 38 is formed in which the suspension of the instrument container 7 is located. This suspension includes, in this embodiment, elastic lower compression springs 39 connected to the inner wall 12 the lower evaporator 11 and the lower wall of the instrument container 7, and lateral elastic compression springs 40 associated with the side walls of the instrument container 7 and the inner side walls 12 of the lower evaporator 11.

In the upper part of the lower evaporator 11, a channel 41 is made (Fig. 5), an opening 42 is made in the frame 28 (Fig. 1). Channel 43 is made in the external thermal insulator 27. The longitudinal axes of these channels 41 and 43, the openings 42, and the branches of flexible cable thermoelectric thermometers 3 located therein are combined.

The lower evaporator 11 is made with handles 44 (Figs. 1, 5), the upper evaporator 19 is made with handles 45 (Figs. 1, 2), the device has an eyelet 46 (Fig. 1) connected to the frame 28.

Object 31 is mounted, for example, on drive rollers 47, which are mounted on the hearth 48 of the furnace. The device in this example of its execution is located on the object 31 with the displacement of the object at a distance s (figure 1) from the zone 49 of the location of the working junctions 4 of the device. Working junctions 4 are installed at levels 50, located along the height of the object 31. Horizontal working junctions 4 are located at a distance s1 from each other, and vertically working junctions are located at a height h relative to each other. These distances can be constant or different depending on the measured temperature profile of the object.

Figure 5 shows the means of connecting the evaporators, in particular, the upper evaporator 19 is connected to the lower evaporator 11 by the latches 51 of the lower evaporator 11, which engage with the brackets 52 (figure 2) of the upper evaporator 19.

The operation of the device is illustrated by the way it works.

First, holes 30 of different depths are made in the object 31 (Fig. 1), then working junctions 4 of flexible cable thermoelectric thermometers 3 are placed and fixed in the holes of the object.

In the disassembled position of the device, liquid refrigerant 15 and 23, for example water, is poured into the cavities of the lower and upper evaporators 11 and 19. In this case, as a refrigerant in another embodiment of the device, other liquid solutions are poured into the cavities of these evaporators, which in their properties may differ from each other.

Next, assemble the device. The registrar 1, together with the power supply elements 2, fixed in the housing 5 by the heat insulator 33, is located in the instrument container 7, which is installed in the tank 24 of the first lower evaporator 11, and the tank 24 is closed by the second upper evaporator 19. The evaporators 11 and 19 are thermally insulated by the heat insulator 27. Next, the device fixed on the object 31 in the working position and move it together with the object in a hot oven. The temperature of the object moving in the furnace is recorded by the recorder 1 by fixing the measuring electrical signals from flexible cable thermoelectric thermometers 3.

A feature of the method is that during assembly of the device, refrigerants 15 and 23 are first frozen in the evaporators 11 and 19. After that, the evaporators are frozen in the negative temperature range of -10 ° C to -50 ° C. Then, the recorder 1 is connected with flexible cable thermoelectric thermometers 3 and the housing 5 is placed together with the registrar and flexible cable thermoelectric thermometers in the instrument container 7. Then the first evaporator 11 with a capacity of 24 up is placed, in which, on an elastic suspension, for example, springs 39 and 40, and the instrument container 7 is fixed. Next, the first evaporator is closed with the second evaporator 19 from above and the evaporators 11 and 19 are connected into one device assembly with latches 51 (Fig. 5), which are engaged with brackets 52 .

After freezing the evaporators, the indicated unit of the device is kept in a predetermined time interval at a natural temperature to the state of complete removal of heat from the heat recorder by frozen evaporators and to the state of temperature equalization of the recorder and the instrument container, and at this shutter speed, the evaporators are thermally insulated from the external environment by an external heat insulator 27 ( mats), which are then wrapped with heat-resistant wire, forming a frame 28.

A device is installed and fixed at object 31 with a cooled recorder 1 located in the housing 5 and device container 7. Work junctions 4 are connected to the openings 30 of object 31 connected to the recorder 1 with flexible thermoelectric thermometers 3. Object 31 with a cooled device is introduced into the hot furnace and moved them in the furnace, for example, by rollers 48.

In the process of passing through the space of a hot furnace, the outer part of the measuring device is first heated, then the evaporators 11 and 19 are heated, and the refrigerants 15 and 23 from the evaporators evaporate as the device moves in the furnace and heats up. Next, the instrument container 7 is heated. In order to eliminate the risk of overheating of the recorder 1, heat generated inside the recorder case 5 is removed from it. To this end, heat is accumulated in the housing 5 by a thermal accumulator 29, which is located in the housing next to the recorder 1.

Heat removal from the recorder 1 according to this method can be produced by other known means. In this case, overheating of the recorder in a certain time interval during which the recorder operates in a hot furnace is significantly reduced. Lead massive heat-absorbing element, presented in this technical solution as a thermal accumulator 29, is an element of the device, which is described as an example of its execution. In another embodiment of the device, the functions of the thermal accumulator are performed by a special cooler located next to the recorder in the housing 5.

When moving the device and the object in the furnace, the resulting dynamic loads on the housing 5 of the recorder 1 are damped by the elastic vibrations of the instrument container relative to the lower evaporator 11. The damping is carried out by the springs 39 and 40 of the elastic suspension of the instrument container. In this case, the shock loads on the recorder 1 are reduced.

Reducing sharp fluctuations in the instrument container, as well as overheating of the recorder, significantly stabilizes the temperature and dynamic operating parameters, eliminates unacceptable biases of flexible cable thermoelectric thermometers in connection with the recorder.

This method and device provide the possibility of its operation in a hot furnace at temperatures up to 1600 ° C for 20 hours.

Information sources

1. Blinov O.M., Belenky A.M., Berdyshev V.F. Thermotechnical measurements and instruments, M., Metallurgy, 1993, p. 288.

2. Yayato T., Mukombo M., Arimatsu K. A new technique for temperature measurements in the iron and steel industry, Sumitomo Kinzoku, 1986, vol. 38, No. 4, pp. 365-373.

3.JP 55-69736, 11/08/1978.

4. Furnace Tracker Temperaturmessung bis 1800 ° C, DATAPAQ, 05.1999.

5. EP 1202014 A2, 05/02/2001.

6. SU 1364903 A1, 01/07/1988.

7. JP 2000-130961, 05/12/2000.

8. The journal "Metallurgical production and technology", No. 2, 2006, S. 68, 70, 82.

9. Termal monitoring during slab reheating processes BARTEK, "Componenten und systeme GmbH", 1999, c.2-8 (prototype).

Claims (6)

1. A device for measuring the heating temperature of an object in metallurgical furnaces, containing an electronic temperature recorder installed in the housing, connected to power elements located in the housing and located outside the housing of cable thermoelectric thermometers located in the openings of the object at different levels, an instrument vacuum thermos container with a lid in which the recorder housing is located, a first evaporator with a container in which the instrument container is located, and a second evaporator closing the lower evaporator, each evaporator is made with double closed walls, between which a closed cavity filled with a refrigerant is formed, evaporator tubes for filling the refrigerant in the evaporator and for exiting the evaporator of air and steam, an external thermal insulator located around the evaporators, around which a heat-resistant wire is wound, forming the frame, while the second evaporator is installed above the first evaporator, the capacity of the latter is facing the open part upwards, the evaporator pipes are located behind frame and communicated in the working position of the device with the hot medium of the furnace, in the internal cavity of the recorder housing, near the recorder there is a thermal accumulator, the cavity of the recorder housing is filled with a thermal insulator fixing the recorder, batteries and a thermal accumulator in the recorder case, the cavity between the walls of the instrument container and the recorder case, and between the outer wall of the lower evaporator and the frame are filled with a heat insulator, between the inner wall of the lower evaporator and the wall of the instrument a closed air space is formed in which the elastic suspension of the instrument container is located. 2. The device according to claim 1 includes a recess in the side wall of the instrument container, forming a window with the container lid closed, in which flexible cable thermoelectric thermometers are located. 3. The device according to claim 1 includes lower springs associated with the inner wall of the lower evaporator and the lower wall of the instrument container, and side springs that are associated with the side walls of the instrument container and the inner side walls of the lower evaporator, wherein the springs form an elastic suspension. 4. The device according to claim 1 includes channels in the upper part of the lower evaporator and in the external thermal insulator, as well as a hole made in the frame, while the longitudinal axes of these channels, openings and windows of the instrument container are aligned and flexible cable thermoelectric thermometers are located in them. 5. The device according to claim 1 contains a ceramic fiber felt forming a closed shell of an external thermal insulator around the evaporators, a heat insulator in the inner cavity of the recorder body is made of foamed heat-resistant cured material, a heat insulator in the cavity between the walls of the instrument container and the recorder body is made of heat-resistant basalt fiber wool. 6. The method of operation of the device for measuring the heating temperature of the object in metallurgical furnaces, comprising making holes in the object of different depths, placing and fixing temperature sensors in the holes of the object, filling the evaporators with liquid refrigerant, such as water, assembling the device, for which the recorder is located in the instrument container, which is installed in the tank of one evaporator and the tank is closed with a second evaporator, then the evaporators are thermally insulated, after which the device is fixed at the object When moving the device together with the object in the hot furnace and register the temperature of the object moving in the furnace, during the assembly of the device, the refrigerant in the evaporators is first frozen in the minus temperature range (-10) ÷ (-50) ° С, the recorder is connected with flexible cable thermoelectric thermometers and they place the recorder case with flexible cable thermoelectric thermometers in the instrument container, they place the first evaporator with the capacity up, in which they are mounted and fixed on an elastic suspension the container container in the tank of the first evaporator, then the first evaporator is closed with the second evaporator from above and the evaporators are connected to each other in one unit of the device, the evaporators are thermally insulated from the external environment by an external heat insulator, then the device is installed and fixed on the object with a cooled recorder located in the housing and the instrument container, connected temperature sensors associated with the recorder, inject an object with a cooled device into the hot oven and move them in the oven, moreover, when the recorder is heated, heat is removed from it inside the case, which is accumulated in the case by a thermal accumulator, and when the device and the object are moved in the furnace, the dynamic loads arising on the recorder case are suppressed by elastic vibrations of the instrument container relative to the lower evaporator.

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