A heat-resistant tool for fixing thermocouple and a temperature measuring method for a pit furnace

Abstract

The application discloses a heat-resistant tool for fixing a thermocouple and a temperature measuring method of a shaft furnace. The heat-resistant tool comprises a fixing assembly and prefabricated cement blocks. The fixing assembly comprises a base, a supporting column and a locking structure. The locking structure is fixed above the base through the supporting column. Two prefabricated cement blocks capable of being buckled into a column are fixed in the locking structure. The temperature measuring method of the shaft furnace comprises the following steps: hoisting and feeding the temperature measuring tool and the fixing assembly into the shaft furnace after fixing; fixing the thermocouple by using the locking structure; measuring the temperature; pulling out the thermocouple under high temperature; hoisting out the fixing assembly and the broken prefabricated cement blocks of the heat-resistant tool together with the temperature measuring tool to complete the temperature measurement. The heat-resistant tool for fixing the thermocouple has the advantages of simple structure, convenient operation and reusable fixing assembly. After the temperature measurement is completed, the thermocouple can be directly pulled out under high temperature, and the thermocouple will not be damaged when being pulled out, thereby saving the cooling time and improving the work efficiency.

Description

A heat-resistant fixture for fixing thermocouples and a method for temperature measurement in a pit furnace. Technical Fields

[0001] This invention relates to the field of furnace temperature detection technology, specifically to a heat-resistant fixture for fixing thermocouples and a method for temperature measurement in a pit furnace. Background Technology:

[0002] Pit furnaces are periodic operation furnaces used in machinery factories to perform various heat treatments on mechanical parts, such as tempering, nitriding, and carburizing, to modify their metallic properties. They are generally suitable for heat treatment of rod-shaped and long shaft-shaped parts. When using pit furnaces to heat production parts, temperature control within the furnace is crucial, and furnace temperature uniformity plays a vital role in product quality. Therefore, it is necessary to regularly check the temperature uniformity of the pit furnace and perform maintenance and adjustments to avoid long-term uneven furnace temperature affecting product yield. Temperature uniformity testing involves installing a temperature measuring fixture inside the pit furnace. The fixture includes a lifting rod and three layers of material trays (upper, middle, and lower) fixed to the lower part of the rod. After the fixture is placed into the pit furnace using a crane, fifteen 3m long thermocouples are inserted into the furnace through pre-drilled holes in the furnace cover. Thermocouples are commonly used temperature measuring elements in temperature measurement instruments, directly measuring temperature and converting the temperature signal into a thermoelectric potential signal. This signal is then converted into furnace temperature by an electrical instrument mounted on the furnace cover, achieving the purpose of temperature measurement.

[0003] Currently, to ensure that the thermocouples do not shift during temperature measurement, operators need to enter the furnace before measurement and use high-temperature resistant iron wire to bind the thermocouples to the material tray of the temperature measuring fixture. After the temperature measurement of the pit furnace is completed, since the highest temperature inside the furnace can reach 950℃ during the measurement process, the thermocouples cannot be directly pulled out from the hole in the furnace cover. Moreover, since the thermocouples are bound to the temperature measuring fixture with high-temperature resistant iron wire, forcibly pulling them out will damage the thermocouples. It is necessary to wait for the pit furnace to drop from 900-950℃ to 200℃ before the furnace cover can be opened. Continue to wait for the temperature of the pit furnace to drop to room temperature before the operators can enter the furnace to remove the iron wire binding the thermocouples, pull out the thermocouples, lift the temperature measuring fixture out of the furnace, and then raise the temperature for the subsequent pre-seepage process.

[0004] The above process has the following problems: First, due to the backheating during the cooling process of the pit furnace, the entire cooling and thermocouple removal process for each pit furnace is extremely slow, taking approximately 5 days. The company uses 8 pit furnaces of this type for production operations. To avoid affecting normal production, each pit furnace must be inspected and measured individually. Assuming each pit furnace requires two temperature measurements per year, the 8 pit furnaces will cause a total production delay of 80 days annually due to cooling, significantly increasing the company's time costs and severely impacting production progress. Second, manually disassembling the iron wire is time-consuming and labor-intensive, reducing production efficiency and increasing labor costs. Invention content:

[0005] The first objective of this invention is to provide a heat-resistant fixture for fixing thermocouples that is simple in structure, easy to operate, and has reusable fixing components.

[0006] The second objective of this invention is to provide a method for measuring temperature in a well furnace that allows the thermocouple to be directly removed at a high temperature after temperature measurement is completed, without damage to the thermocouple, saving cooling time and improving work efficiency.

[0007] The first objective of this invention is achieved by the following technical solution: a heat-resistant fixture for fixing thermocouples, comprising a fixing component and precast cement grout blocks, wherein the fixing component comprises a base, a support column and at least one locking structure; each locking structure is fixed above the base by at least one support column, and two precast cement grout blocks that can be interlocked into a column are fixed inside the locking structure, and semicircular holes are respectively opened through the two precast cement grout blocks, wherein when the two precast cement grout blocks are interlocked, the semicircular holes are correspondingly interlocked to form a circular channel.

[0008] Preferably, the locking structure includes two semi-circular rings arranged vertically, a first semi-circular ring and a second semi-circular ring. The second semi-circular ring is fixed above the base by the support column. One side of the first semi-circular ring is hinged to one side of the second semi-circular ring, and the other side of the first semi-circular ring is connected to the other side of the second semi-circular ring by a locking bolt.

[0009] Preferably, fastening bolts are provided on the first semi-circular ring and / or the second semi-circular ring.

[0010] Preferably, the precast cement grout block is a semi-cylindrical grout block formed by hardening silicate cement and matching the first semi-circular ring or the second semi-circular ring. When the first semi-circular ring and the second semi-circular ring are fastened and locked, the two precast cement grout blocks are fastened together to form a cylinder.

[0011] Preferably, the base is disc-shaped, and a first groove is formed on the upper surface of the base; a second groove penetrating the base is formed on the edge of the base in a horizontal direction.

[0012] Preferably, the radius of the semicircular hole is smaller than the radius of the thermocouple; chamfers are provided at the opening edges at both ends of the semicircular hole.

[0013] Preferably, each of the fixing components includes two locking structures, and the two ends of the column formed by the two precast cement grout blocks are fixed by the two locking structures.

[0014] The second objective of this invention is achieved by the following technical solution: a method for temperature measurement in a well-type furnace, comprising the following steps:

[0015] (1) Install at least one fixing component on each layer of the temperature measuring fixture, and then hoist the temperature measuring fixture with the fixing component installed into the pit furnace.

[0016] (2) A corresponding number of thermocouples are passed through the reserved holes in the furnace cover into the pit furnace and placed near the fixed components;

[0017] (3) Open the locking bolts of the fixing component to open the first semi-circular ring and the second semi-circular ring. Place one of the precast cement slurry blocks inside the second semi-circular ring and place the thermocouple inside the semi-circular hole of the precast cement slurry block. Then, fasten the other precast cement slurry block onto the precast cement slurry block to form a cylinder. Then, fasten the first semi-circular ring and the second semi-circular ring together. Then, use the locking bolts to lock and fix the locking structure. Tighten the bolts to press the two precast cement slurry blocks together, thereby clamping the thermocouple between the two precast cement slurry blocks.

[0018] (4) Close the furnace cover and measure the temperature. After the temperature measurement is completed, when the temperature inside the furnace is 900-950℃, the strength of the precast cement slurry block decreases and the brittleness increases. Pulling out the thermocouple will cause it to break naturally. The broken precast cement slurry block falls into the first groove of the base. Pull out the thermocouple quickly.

[0019] (5) Open the furnace cover and quickly lift out the fixing components of the heat-resistant fixture and the broken precast cement slurry blocks together with the temperature measuring fixture to complete the temperature measuring operation.

[0020] Preferably, in step (1), the operator uses heat-resistant iron wire to pass through the second groove of each base and tie each base to the corresponding position on the material tray.

[0021] Preferably, in step (3), the two ends of the precast cement grout blocks that are fastened together to form a column are fixed by two locking structures.

[0022] Working Principle Description: This invention includes a fixing component and precast cement slurry blocks. The fixing component has a locking structure that secures and locks two semi-cylindrical precast cement slurry blocks. Each of the two precast cement slurry blocks has a semi-circular hole that allows them to interlock and form a circular channel. A thermocouple is inserted into this circular channel. Since the precast cement slurry blocks are hardened using silicate cement, when the furnace heating temperature is below 400℃, the heating has little effect on the strength of the hardened silicate cement. The locking structure can press and fix the two semi-cylindrical precast cement slurry blocks, thus clamping the thermocouple. When the furnace heating temperature is between 400-900℃, the strength of the hardened silicate cement begins to decrease. When the furnace heating temperature exceeds 900℃, the hydrated calcium silicate in the hardened silicate cement decomposes, and its strength decreases to 20% of its original value. The brittleness increases, and removing the thermocouple will cause it to break naturally. By utilizing the physical changes of silicate cement material at different heating temperatures—that is, utilizing the high strength of silicate cement in the early stage and the brittleness of cement in the later stage—the thermocouple can be fixed and loosened. The thermocouple can be directly removed at high temperatures without damage, and the performance of silicate cement is maximized. During the removal of the thermocouple, the broken precast cement slurry blocks fall into the first groove of the base, allowing the fixing components of the heat-resistant tooling and the broken precast cement slurry blocks to be lifted out together with the temperature measuring tooling, avoiding contamination of the furnace environment. In addition, the mineral components formed by the hardening of cement will decompose at 1000℃. According to the composition, the decomposition reaction is slow, and the pit furnace heats up slowly, so the precast cement slurry blocks will not explode in the furnace, thus preventing damage to the instruments inside the furnace.

[0023] Advantages of this invention:

[0024] (1) This invention uses silicate cement hardened and molded as the material for fixing thermocouples. When the furnace temperature is below 400℃, the hardness of silicate cement is high, which can meet the requirements for clamping and fixing thermocouples. However, when the furnace temperature is above 900℃, the hardness of silicate cement decreases significantly and its brittleness increases. Pulling out the thermocouple will cause it to break naturally, which can meet the conditions for pulling out the thermocouple directly at high temperature. Moreover, the thermocouple will not be damaged when it is pulled out. By utilizing the different properties of silicate cement at different temperatures to meet the temperature measurement process requirements of pit furnace, a lot of cooling time can be saved as production time, thus accelerating the production progress.

[0025] (2) After the temperature is measured in the pit furnace, there is no need to manually disassemble the heat-resistant fixtures used to fix the thermocouples, which saves time and effort, improves production efficiency, and saves labor costs.

[0026] (3) The broken precast cement slurry block falls into the first groove of the base, and the fixing components of the heat-resistant fixture and the broken precast cement slurry block can be lifted out together with the temperature measuring fixture to avoid polluting the furnace environment.

[0027] (4) The heat-resistant tooling used to fix the thermocouple has a simple structure and is easy to operate. The fixing components used to fix the thermocouple can be reused, reducing equipment wear and tear costs. Figure description:

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 is a schematic diagram of the structure of the present invention.

[0030] Figure 2 is a right view of Figure 1.

[0031] Figure 3 is a top view of Figure 2.

[0032] Figure 4 is a schematic diagram of the usage state of the present invention.

[0033] Figure 5 is a cross-sectional view of Figure 4 (AA).

[0034] The components in the attached diagram are labeled as follows: Fixing component 1, base 1.1, first groove 1.1.1, second groove 1.1.2, support column 1.2, locking structure 1.3, first semi-circular ring 1.3.1, second semi-circular ring 1.3.2, rotating shaft 1.3.3, fixing lug 1.3.4, locking bolt 1.3.5, fastening bolt 1.3.6, precast cement grout block 2, semi-circular hole 2.1, temperature measuring fixture 3, lifting rod 3.1, material tray 3.2, thermocouple 4, pit furnace 5. Detailed implementation method:

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "front", "rear", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0037] Example 1: As shown in Figures 1-3, a heat-resistant fixture for fixing thermocouples includes a fixing component 1 and a precast cement grout block 2. The fixing component 1 is used to fix and lock the precast cement grout block 2. The fixing component 1 includes a base 1.1, a support column 1.2, and at least one locking structure 1.3. The base 1.1 is disc-shaped, and a first groove 1.1.1, which is circular, is formed on the upper surface of the base 1.1. A second groove 1.1.2, which penetrates the base 1.1, is formed on the edge of the base 1.1 in a horizontal direction, facilitating the wire to pass through the second groove 1.1.2 to bind the heat-resistant fixture to the material tray 3.2 of the temperature measuring fixture 3. In this example, the fixing component 1 includes two locking structures 1.3. Each locking structure 1.3 is fixed above the base 1.1 by two support columns 1.2, and the support columns 1.2 provide fixed support for the locking structure 1.3. The locking structure 1.3 is made of heat-resistant steel to withstand high temperatures. The locking structure 1.3 includes two semi-circular rings 1.3.1 and 1.3.2 arranged vertically. The bottom sides of the second semi-circular ring 1.3.2 are fixed to the base 1.1 by two support columns 1.2. One side of the first semi-circular ring 1.3.1 and one side of the second semi-circular ring 1.3.2 are hinged together by a pivot 1.3.3. Fixing ears 1.3.4 are welded to the other side of the first semi-circular ring 1.3.1 and the other side of the second semi-circular ring 1.3.2 respectively. The fixing ears 1.3.4 have through holes, and locking bolts 1.3.5 are inserted into the through holes. The locking bolts 1.3.5 can fasten the first semi-circular ring 1.3.1 and the second semi-circular ring 1.3.2 to form a complete ring and lock it.

[0038] The precast cement grout block 2 is a semi-cylindrical shape that matches the first semi-circular ring 1.3.1 or the second semi-circular ring 1.3.2. It is hardened and formed using silicate cement. The chemical composition of silicate cement is: tricalcium silicate (3CaO·SiO2, simplified formula C3S); dicalcium silicate (2CaO·SiO2, simplified formula C2S); tricalcium aluminate (3CaO·Al2O3, simplified formula C3A); tetracalcium aluminoferrite (4CaO·Al2O3·Fe2O3, ... (Simplified C4AF); Two precast cement grout blocks 2 are fastened together to form a cylinder. Both ends are fixed by two locking structures 1.3. When the first semi-circular ring 1.3.1 and the second semi-circular ring 1.3.2 of the locking structure 1.3 are fastened together, the two semi-cylindrical precast cement grout blocks 2 are fastened together to form a cylinder. That is, the precast cement grout blocks 2 can be fixed by the fastening and locking of the first semi-circular ring 1.3.1 and the second semi-circular ring 1.3.2 in the two locking structures 1.3. Each precast cement grout block 2 has a semi-circular hole 2.1 through it. When two precast cement grout blocks 2 are fastened together, the semi-circular holes 2.1 are correspondingly fastened to form a circular channel. The radius of this circular channel is smaller than the radius of the thermocouple 4. In use, the thermocouple 4 is placed inside the circular channel, and the two precast cement grout blocks 2 are pressed together by adjusting the locking bolts 1.3.5 on the first semi-circular ring 1.3.1 and the second semi-circular ring 1.3.2, thereby clamping the thermocouple 4 and preventing... To prevent the thermocouple 4 from shifting during temperature measurement, chamfers are ground at the edges of the openings at both ends of the circular channel to prevent damage to the port edges of the circular channel when the thermocouple 4 is pulled out. Fastening bolts 1.3.6 are provided on both sides of the top of the first semi-circular ring 1.3.1. The two semi-cylindrical precast cement grout blocks 2 are pressed by the fastening bolts 1.3.6, thereby clamping the thermocouple 4 between the two precast cement grout blocks 2, further preventing the thermocouple 4 from shifting during temperature measurement.

[0039] Example 2: As shown in Figures 4-5, the method for temperature measurement in a pit furnace using the heat-resistant fixture for fixing thermocouples as described in Example 1 includes the following steps:

[0040] (1) A total of 15 fixing components 1 are installed on the temperature measuring fixture 3. The temperature measuring fixture 3 includes a hanging rod 3.1 and three layers of material trays 3.2 fixed to the lower part of the hanging rod 3.1. Five fixing components 1 are installed on each layer of material tray 3.2. The five fixing components 1 are evenly arranged on the material tray 3.2. Specifically, the operator uses heat-resistant iron wire to pass through the second groove 1.1.2 of each fixing component 1 and tie each fixing component 1 to the corresponding position of the material tray 3.2. Then, the temperature measuring fixture 3 with the fixing components 1 installed is hoisted and sent into the pit furnace 5.

[0041] (2) Fifteen thermocouples 4 pass through the reserved holes in the furnace cover and enter the pit furnace 5, and are evenly distributed on the upper, middle and lower material trays 3.2, with 5 thermocouples on each material tray 3.2, and are placed in advance near the fixed component 1.

[0042] (3) First, open the locking bolt 1.3.5 of the fixing component 1 so that the first semi-circular ring 1.3.1 and the second semi-circular ring 1.3.2 are in the open state. Place the two ends of one of the precast cement grout blocks 2 into the matching second semi-circular ring 1.3.2 respectively. Place the thermocouple 4 into the semi-circular hole 2.1 of the precast cement grout block 2 so that the other precast cement grout block 2 is correspondingly fastened to the precast cement grout block 2 to form a cylinder. At this time, the thermocouple 4 is exactly placed in the circular channel. Then, fasten the first semi-circular ring 1.3.1 and the second semi-circular ring 1.3.2. Use the locking bolt 1.3.5 to lock and fix the locking structure 1.3. Tighten the fastening bolt 1.3.6 to press the two precast cement grout blocks 2 together, so that the two precast cement grout blocks 2 clamp the thermocouple 4.

[0043] (4) Close the furnace cover and measure the temperature. After the temperature measurement is completed, when the temperature inside the furnace is 900-950℃, the strength of the precast cement slurry block 2 decreases and the brittleness increases. Pulling out the thermocouple 4 will cause it to break naturally. The broken precast cement slurry block 2 falls into the first groove 1.1.1 of the base 1.1. Quickly pull out the 15 thermocouples 4.

[0044] (5) Open the furnace cover and quickly lift out the fixed component 1 of the heat-resistant fixture and the broken precast cement slurry block 2 together with the temperature measuring fixture 3 to complete the temperature measuring operation and continue the subsequent pre-permeation process.

[0045] Working principle description: This invention includes a fixing component 1 and precast cement slurry blocks 2. The fixing component 1 includes a locking structure 1.3, which can fix and lock two semi-cylindrical precast cement slurry blocks 2. Semi-circular holes 2.1 are drilled through each of the two precast cement slurry blocks 2 to form a circular channel. Thermocouples 4 are inserted into the circular channels. Since the precast cement slurry blocks 2 are hardened using silicate cement, when the furnace heating temperature is below 400℃, the heating has little effect on the strength of the hardened silicate cement. The locking structure 1.3 can press and fix the two semi-cylindrical precast cement slurry blocks 2, thereby clamping the thermocouples 4. When the furnace heating temperature is between 400-900℃, the strength of the hardened silicate cement begins to decrease. When the furnace heating temperature exceeds 900℃, the strength of the hardened silicate cement... The hydrated calcium silicate decomposes, reducing its strength to 20% of its original value and increasing its brittleness. Pulling out the thermocouple 4 will cause it to naturally break. The different properties of silicate cement at different temperatures are integrated and applied to the temperature measurement process requirements of the pit furnace 5. The thermocouple 4 can be fixed and untied, and can be pulled out directly at high temperatures without damage. During the removal of the thermocouple 4, the broken precast cement slurry block 2 falls into the first groove 1.1.1 of the base 1.1, and the fixing component 1 of the heat-resistant tooling and the broken precast cement slurry block 2 can be lifted out together with the temperature measuring tooling 3, avoiding pollution of the furnace environment. In addition, the mineral components formed by cement hardening will decompose at 1000℃. According to the composition, the decomposition reaction is slow. At the same time, the pit furnace 5 heats up slowly, and the precast cement slurry block 2 will not explode in the furnace, so it will not damage the instruments in the furnace.

[0046] Using the fixed thermocouple 4 of this invention for temperature measurement, each temperature measurement of each pit furnace 5 can save 5 days of cooling time. The company uses a total of 8 pit furnaces of this type 5. Calculated based on the requirement of 2 temperature measurements per pit furnace 5 per year, the temperature measurement of 8 pit furnaces 5 throughout the year can save 80 days of cooling time for production, reducing the company's time costs and accelerating the production progress. There is no need to manually disassemble the heat-resistant tooling used to fix the thermocouple 4, saving time and labor, improving production efficiency, and saving labor costs.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A heat-resistant fixture for fixing a thermocouple, characterized in that, It includes a fixing component and precast cement grout blocks. The fixing component includes a base, a support column, and at least one locking structure. Each locking structure is fixed above the base by at least one support column. Two precast cement grout blocks that can be interlocked to form a column are fixed within the locking structure. Semicircular holes are drilled through each of the two precast cement grout blocks. When the two precast cement grout blocks are interlocked, the semicircular holes correspondingly interlock to form a circular channel. The locking structure includes two vertically arranged first semicircular rings and second semicircular rings. The semi-circular ring is fixed above the base by the support column. One side of the first semi-circular ring is hinged to one side of the second semi-circular ring, and the other side of the first semi-circular ring is connected to the other side of the second semi-circular ring by locking bolts. The precast cement grout block is a semi-cylindrical grout block that is hardened from silicate cement and matches the first semi-circular ring or the second semi-circular ring. When the first semi-circular ring and the second semi-circular ring are fastened and locked, the two precast cement grout blocks are fastened into a cylinder.

2. The heat-resistant fixture for fixing a thermocouple according to claim 1, characterized in that, Fastening bolts are provided on the first semi-circular ring and / or the second semi-circular ring.

3. The heat-resistant fixture for fixing a thermocouple according to claim 1, characterized in that, The base is disc-shaped, and a first groove is formed on the upper surface of the base; a second groove is formed on the edge of the base in a horizontal direction, penetrating the base.

4. The heat-resistant fixture for fixing a thermocouple according to claim 1, characterized in that, The radius of the semicircular hole is smaller than the radius of the thermocouple; chamfers are provided at the opening edges at both ends of the semicircular hole.

5. A heat-resistant fixture for fixing a thermocouple according to claim 1, characterized in that, Each of the fixing components includes two of the locking structures, and the two ends of the column formed by the two precast cement grout blocks are fixed by the two locking structures.

6. A method for temperature measurement in a pit furnace using a heat-resistant fixture for fixing thermocouples as described in any one of claims 1-5, characterized in that, It includes the following steps: (1) Install at least one fixing component on each layer of the temperature measuring fixture, and then hoist the temperature measuring fixture with the fixing component installed into the pit furnace; (2) Pass the corresponding number of thermocouples through the reserved holes in the furnace cover into the pit furnace and place them near the fixing component; (3) Open the locking bolts of the fixing component so that the first semi-circular ring and the second semi-circular ring are in the open state, place one of the precast cement slurry blocks in the second semi-circular ring, place the thermocouple in the semi-circular hole of the precast cement slurry block, and make the other precast cement slurry block be correspondingly fastened to the precast cement slurry block to form a cylinder, and then... The first semicircular ring and the second semicircular ring are fastened together, and then the locking structure is locked and fixed by using the locking bolt. Tighten the bolt to press the two precast cement slurry blocks together, so that the two precast cement slurry blocks clamp the thermocouple; (4) Close the furnace cover to measure the temperature. After the temperature measurement is completed, when the temperature inside the furnace is 900-950℃, the strength of the precast cement slurry blocks decreases and the brittleness increases. Pulling out the thermocouple will cause it to break naturally. The broken precast cement slurry blocks fall into the first groove of the base and the thermocouple is quickly pulled out; (5) Open the furnace cover and quickly lift out the fixing components of the heat-resistant tooling and the broken precast cement slurry blocks together with the temperature measuring tooling to complete the temperature measurement operation.

7. The method for temperature measurement of a well-type furnace according to claim 6, characterized in that, In step (1), the operator uses heat-resistant iron wire to pass through the second groove of each base and bind each base to the corresponding position on the material tray.

8. The method for temperature measurement of a well-type furnace according to claim 6, characterized in that, In step (3), the two precast cement grout blocks are fastened together to form a column, and the two ends of the column are fixed by the two locking structures.

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