CN113702426B - Test device and test method for evaluating integral heat insulation performance of refractory material - Google Patents
Test device and test method for evaluating integral heat insulation performance of refractory material Download PDFInfo
- Publication number
- CN113702426B CN113702426B CN202111118838.7A CN202111118838A CN113702426B CN 113702426 B CN113702426 B CN 113702426B CN 202111118838 A CN202111118838 A CN 202111118838A CN 113702426 B CN113702426 B CN 113702426B
- Authority
- CN
- China
- Prior art keywords
- refractory
- temperature measuring
- furnace shell
- group
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011819 refractory material Substances 0.000 title claims abstract description 43
- 238000009413 insulation Methods 0.000 title claims abstract description 34
- 238000012360 testing method Methods 0.000 title claims abstract description 27
- 238000010998 test method Methods 0.000 title claims abstract description 8
- 239000011449 brick Substances 0.000 claims abstract description 145
- 239000000523 sample Substances 0.000 claims abstract description 74
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 239000002131 composite material Substances 0.000 claims description 24
- 238000004321 preservation Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 10
- 230000009970 fire resistant effect Effects 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000012546 transfer Methods 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 101
- 230000000630 rising effect Effects 0.000 description 7
- 239000004927 clay Substances 0.000 description 5
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 239000003063 flame retardant Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000008204 material by function Substances 0.000 description 1
- GALOTNBSUVEISR-UHFFFAOYSA-N molybdenum;silicon Chemical compound [Mo]#[Si] GALOTNBSUVEISR-UHFFFAOYSA-N 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/18—Investigating or analyzing materials by the use of thermal means by investigating thermal conductivity
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Nonlinear Science (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a test device and a test method for evaluating the overall heat insulation performance of a refractory material, and belongs to the field of refractory materials. The furnace comprises a furnace shell and a furnace cover, wherein a first refractory brick layer is horizontally paved in the bottom wall of the furnace shell through refractory bricks, a second refractory brick layer is annularly arranged in the side wall of the furnace shell through refractory bricks, the refractory ends of the refractory bricks face the inside of the furnace shell, and the first refractory brick layer and the second refractory brick layer enclose a cavity with an upward opening; a heating device and a first group of temperature measuring probes are arranged below the furnace cover, the furnace cover is covered on an opening at the upper end of the furnace shell in a sealing manner, the heating device stretches into the cavity, and the first group of temperature measuring probes are in contact with temperature measuring points arranged on refractory bricks in the furnace shell; the outer surface of the side wall of the furnace shell is provided with a second group of temperature measuring probes, and the first group of temperature measuring probes and the second group of temperature measuring probes are connected with a temperature measuring device. The invention objectively characterizes the temperature environment of the refractory material in the service of the kiln, simulates the actual kiln technological condition and accurately evaluates the overall heat transfer performance of the refractory material.
Description
Technical Field
The invention relates to the field of refractory materials, in particular to a test device and a test method for evaluating the overall heat insulation performance of a refractory material.
Background
The refractory material is a kiln lining material commonly used in a thermal kiln, and is one of indispensable functional materials for guaranteeing the safe production of the kiln. The design, configuration, construction and application of the refractory material affect the life of the industrial kiln and also determine the heat insulation effect of the kiln.
In the prior art, kiln design staff calculates the temperatures of different layers, such as a heat preservation layer, a heat insulation layer and a fire-resistant layer, according to the heat conductivity coefficient of refractory bricks of a homogeneous system and the theoretical temperature in a kiln, and refers to the related data of the temperatures to carry out kiln design. However, the theoretical calculation of the temperatures of different layers often does not accord with the actual temperatures, which affects the service life of the kiln and reduces the overall heat insulation performance of the refractory material.
In addition, along with the continuous enhancement of the consciousness of energy conservation and consumption reduction, the requirement of the thermal kiln on energy conservation is also higher and higher, and according to the requirement, a new energy-saving variety of the corresponding refractory material is layered endlessly. The multi-layer composite refractory material with integrated structure and function is a main variety, and is generally composed of a refractory layer and an insulating layer, and some products also have an insulating layer. The fire-resistant layer, the heat-insulating layer and the heat-insulating layer are integrally formed by adopting a synchronous forming and synchronous sintering process. Because the composite refractory material is composed of materials of different layers, the heat transfer capacity of the material is uneven, and the result deviation of theoretically calculating the temperatures of different layers is larger.
Disclosure of Invention
In order to solve the technical problems, the invention provides a test device and a test method for evaluating the integral heat insulation performance of a refractory material, which objectively represent the temperature environment of the refractory material in service of a kiln, simulate the actual kiln technological condition and accurately evaluate the integral heat transfer performance of the refractory material.
The technical scheme provided by the invention is as follows:
A test device for evaluating the overall heat insulation performance of a refractory material comprises a furnace shell and a furnace cover, wherein:
The upper end of the furnace shell is open, a first refractory brick layer is horizontally paved in the bottom wall of the furnace shell through refractory bricks, a second refractory brick layer is annularly arranged in the side wall of the furnace shell through refractory bricks, the refractory ends of refractory bricks in the first refractory brick layer and the second refractory brick layer face the inside of the furnace shell, and the first refractory brick layer and the second refractory brick layer enclose a cavity with an upward opening;
a heating device and a first group of temperature measuring probes are arranged below the furnace cover, the furnace cover is covered on an opening at the upper end of the furnace shell in a sealing manner, the heating device stretches into the cavity, and the first group of temperature measuring probes are in contact with temperature measuring points set on the refractory bricks in the furnace shell;
The outer surface of the side wall of the furnace shell is provided with a second group of temperature measuring probes, and the first group of temperature measuring probes and the second group of temperature measuring probes are connected with a temperature measuring device.
Further, the refractory brick is a composite refractory brick, the composite refractory brick comprises a refractory layer, a heat insulation layer and a heat preservation layer which are sequentially arranged and integrally formed, and the refractory layer of the composite refractory brick faces the inside of the furnace shell.
Further, the temperature measuring points are arranged on the refractory layer, the heat insulation layer and the heat preservation layer, and temperature measuring holes for the first group of temperature measuring probes to be inserted are drilled at the temperature measuring points.
Further, the refractory bricks are homogeneous refractory bricks, the homogeneous refractory bricks comprise heat preservation layer units, heat insulation layer units and refractory layer units which are mutually separated, and the heat preservation layer units, the heat insulation layer units and the refractory layer units are sequentially arranged in the furnace shell from outside to inside.
Further, the temperature measuring points are arranged on the refractory layer unit, the heat insulation layer unit and the heat insulation layer unit, and temperature measuring holes for the first group of temperature measuring probes to be inserted are drilled at the temperature measuring points.
Further, the refractory bricks in the first refractory brick layer and the second refractory brick layer are bonded through fireclay.
Further, the second group of temperature measuring probes are adsorbed on the outer surface of the side wall of the furnace shell through magnetic force, or the outer surface of the side wall of the furnace shell is provided with a mounting groove, and the second group of temperature measuring probes are arranged in the mounting groove.
Further, the furnace shell and the furnace cover are made of steel, the furnace shell is cylindrical in shape, the heating device is a heating rod, the first group of temperature measuring probes are thermocouple probes, the second group of temperature measuring probes are thermal resistance probes, and the temperature measuring device is a multi-path composite inspection temperature measuring device.
A test method of the aforementioned test device for evaluating the overall heat insulating performance of a refractory material, the method comprising:
s1: lifting the furnace cover by using a crane;
s2: horizontally laying refractory bricks along the bottom wall of the furnace shell, and enabling the refractory ends of the refractory bricks to face the inside of the furnace shell to obtain a first refractory brick layer;
s3: arranging refractory bricks on the first refractory brick layer in an annular manner along the side wall of the furnace shell, and enabling the refractory ends of the refractory bricks to face the inside of the furnace shell to obtain a second refractory brick layer;
S4: the furnace cover is covered on the opening at the upper end of the furnace shell in a sealing way, the heating device extends into the cavity, and the first group of temperature measuring probes are in contact with the temperature measuring points set on the refractory bricks in the furnace shell;
S5: setting a heating rate and a heating temperature, turning on a heating device, and starting heating operation;
S6: measuring the temperatures of the first group of temperature measuring probes and the second group of temperature measuring probes by a temperature measuring device, and recording the temperature values of the first group of temperature measuring probes and the second group of temperature measuring probes after the temperatures of the first group of temperature measuring probes and the second group of temperature measuring probes are stable;
S7: and drawing a temperature change curve of each site of the refractory brick according to each recorded temperature value, and evaluating the integral heat insulation performance of the refractory material according to the temperature change curve.
Further, in S2, the refractory bricks are bonded by the fireclay, and in S3, the refractory bricks are bonded by the fireclay.
The invention has the following beneficial effects:
According to the invention, through simulating the actual service condition of the refractory material in the kiln, a relatively objective and accurate temperature change curve of each point is obtained, the temperature condition of the refractory material used in the kiln is visually represented, the overall heat transfer performance of the refractory material is objectively evaluated by a system, the accuracy of the heat conduction test of the refractory material is improved, and considerable economic benefits are created for refractory material enterprises, so that the method has important significance. And the temperature in the test device is controllable, safe and reliable, and the cost is lower. The furnace body can be built by refractory bricks with different sizes, is suitable for refractory bricks of various homogeneous systems and heterogeneous systems, does not require isotropy and homogeneity of the refractory bricks, and expands the testing range of the refractory materials to be tested. In the test process, the temperature rise temperature and the temperature rise rate have no limit on the result of the invention, and the result is steady and has good consistency.
Drawings
FIG. 1 is an exploded view of a test apparatus for evaluating the overall heat insulating performance of a refractory material according to the present invention;
FIG. 2 is a perspective view of a test apparatus for evaluating the overall heat insulating performance of a refractory according to the present invention;
fig. 3 is a top view of the furnace shell.
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
Example 1:
the embodiment of the invention provides a test device for evaluating the overall heat insulation performance of a refractory material, which is shown in figures 1-3 and comprises a furnace shell 1 and a furnace cover 2, wherein:
the furnace shell 1 and the furnace cover 2 are made of steel, the furnace shell 1 is cylindrical, the upper end of the furnace shell is open, the furnace shell 1 and the furnace cover 2 form a high-temperature cylindrical test furnace, and the temperature rising range of the test furnace is 100-1500 ℃.
The furnace body is built in the furnace shell 1 through the refractory bricks to be tested, wherein: the first refractory brick layer 3 is horizontally paved in the bottom wall of the furnace shell 1 and can be bonded through fireclay, the second refractory brick layer 4 is annularly arranged in the side wall of the furnace shell 1 and can be bonded through fireclay, the refractory ends 5 of refractory bricks in the first refractory brick layer 3 and the second refractory brick layer 4 face the inside of the furnace shell 1, the first refractory brick layer 3 and the second refractory brick layer 4 are built into a furnace body, and the first refractory brick layer 3 and the second refractory brick layer 4 enclose an upward opening cavity 6.
The thickness and the height of the furnace body are adjusted by the use amount of refractory bricks, the thickness of the furnace body built by the refractory bricks can be single-layer or multi-layer refractory bricks, and the height of the furnace body can be adjusted by the number of layers of the refractory bricks.
The furnace cover 2 below is provided with heating device 7 and first group temperature probe 8, and heating device 7 can be the heating rod, and the heating rod can use silicon carbide rod or silicon molybdenum rod, selects according to the height of temperature, and the heating rod is installed on the furnace cover, moves along with the furnace cover.
The first group of temperature measuring probes 8 can be thermocouple probes, the thermocouple precision is controlled within +/-1 ℃, for example B, S, K type thermocouples, and the number of the thermocouples is a plurality.
The furnace cover 2 is covered on the opening at the upper end of the furnace shell 1 in a sealing way, the heating device 7 extends into the cavity 6, and the first group of temperature measuring probes 8 are in contact with the temperature measuring points set on the refractory bricks in the furnace shell 1.
The outer surface of the side wall of the furnace shell 1 is provided with a second group of temperature measuring probes 9, and the first group of temperature measuring probes 8 and the second group of temperature measuring probes 9 are connected with a temperature measuring device.
The second set of temperature probes 9 may be thermal resistance probes, for example Pt100 type thermal resistance, in number.
The first group of temperature measuring probes 8 and the second group of temperature measuring probes 9 are connected to the inside or the surface of the test furnace body, and are used for testing the lateral or bottom heat transfer condition of the refractory bricks.
The application method of the invention is as follows:
The furnace lid 2 is first lifted by a crane.
Then according to the bricklaying furnace body of predesigned, the centre sets up the cavity, specifically includes: horizontally laying refractory bricks along the bottom wall of the furnace shell 1, and enabling the refractory ends of the refractory bricks to face the inside of the furnace shell 1 (namely, the refractory ends are vertically upwards), and bonding the refractory bricks by using fireclay to obtain a first refractory brick layer 3; arranging refractory bricks in a ring shape along the inner side wall of the furnace shell 1 on the paved first refractory brick layer 3, and enabling the refractory ends of the refractory bricks to face the inside of the furnace shell 1 (namely, the refractory ends face the middle horizontally), and bonding the refractory bricks by using fire clay to obtain a second refractory brick layer 4; the first layer of refractory bricks 3 and the second layer of refractory bricks 4 enclose an upwardly open cavity 6.
And then the furnace cover 2 is covered on the opening at the upper end of the furnace shell 1 in a sealing way and is locked with the furnace shell, the heating device 7 extends into the cavity, and the first group of temperature measuring probes 8 are in contact with the temperature measuring points set on the refractory bricks in the furnace shell 1.
The temperature rising rate and the temperature rising temperature are set, the heating device 7 is turned on, the temperature rising operation is started, and the temperature measuring device is turned on.
The temperature of the first group of temperature measuring probes 8 and the second group of temperature measuring probes 9 is measured through the temperature measuring device, and after the temperatures of the first group of temperature measuring probes 8 and the second group of temperature measuring probes 9 are stable, the temperature values of the first group of temperature measuring probes 8 and the second group of temperature measuring probes 9, namely the temperature values of the temperature measuring points, are recorded.
And drawing a temperature change curve of each site of the refractory brick according to each recorded temperature value, and evaluating the integral heat insulation performance of the refractory material according to the temperature change curve.
According to the invention, through simulating the actual service condition of the refractory material in the kiln, a relatively objective and accurate temperature change curve of each point is obtained, the temperature condition of the refractory material used in the kiln is visually represented, the overall heat transfer performance of the refractory material is objectively evaluated by a system, the accuracy of the heat conduction test of the refractory material is improved, and considerable economic benefits are created for refractory material enterprises, so that the method has important significance. And the temperature in the test device is controllable, safe and reliable, and the cost is lower. The furnace body can be built by refractory bricks with different sizes, is suitable for refractory bricks of various homogeneous systems and heterogeneous systems, does not require isotropy and homogeneity of the refractory bricks, and expands the testing range of the refractory materials to be tested. In the test process, the temperature rise temperature and the temperature rise rate have no limit on the result of the invention, and the result is stable.
The invention is applicable to various forms of refractory bricks, and several examples are given below for illustration:
Example one:
The refractory brick of this example is composite refractory brick, and composite refractory brick is including setting gradually and integrated into one piece's flame retardant coating, insulating layer and heat preservation, when building the furnace body, composite refractory brick's flame retardant coating orientation stove outer covering is inside.
For the composite refractory brick, the temperature measuring points are arranged on the refractory layer, the heat insulation layer and the heat preservation layer of the composite refractory brick, and the temperature measuring holes for inserting the first group of temperature measuring probes are drilled at the temperature measuring points.
Example two:
The refractory brick of this example is the homogeneity refractory brick, and the homogeneity refractory brick includes heat preservation unit, insulating layer unit and the flame retardant coating unit of mutually separating, and when building the furnace body, heat preservation unit, insulating layer unit and flame retardant coating unit set gradually from outside to inside in the stove outer covering.
For the homogeneous refractory brick, the temperature measuring points are arranged on the refractory layer unit, the heat insulating layer unit and the heat insulating layer unit of the homogeneous refractory brick, and the temperature measuring holes for inserting the first group of temperature measuring probes are drilled at the temperature measuring points.
The second group of temperature measuring probes 9 can be adsorbed on the outer surface of the side wall of the furnace shell 1 through magnetic force, or the outer surface of the side wall of the furnace shell 1 is provided with a mounting groove, and the second group of temperature measuring probes 9 are arranged in the mounting groove.
The temperature measuring device can be a multi-path composite inspection temperature measuring device, the thermocouple and thermal resistance data end is connected with the multi-path composite inspection temperature measuring device, and the multi-path composite inspection temperature measuring device can measure temperature in multiple directions and multiple points.
Example 2:
the embodiment of the invention provides a test method of a test device for evaluating the overall heat insulation performance of a refractory material in embodiment 1, which comprises the following steps:
S1: the furnace cover 2 is lifted by a crane.
S2: the refractory bricks are laid horizontally along the bottom wall of the furnace shell 1 with their refractory ends facing the interior of the furnace shell 1 (i.e. with the refractory ends facing vertically upwards) and bonded with fireclay to give a first layer of refractory bricks 3.
S3: on the laid first refractory brick layer 3, refractory bricks are annularly arranged along the side wall of the furnace shell 1 with the refractory ends of the refractory bricks facing the inside of the furnace shell 1 (i.e., the refractory ends facing horizontally toward the middle), and the refractory bricks are bonded with fireclay to obtain a second refractory brick layer 4.
The first refractory brick layer 3 and the second refractory brick layer 4 enclose a cavity, and the upper end of the cavity is open.
S4: the furnace cover 2 is covered on the opening at the upper end of the furnace shell 1 in a sealing way and is locked with the furnace shell, the heating device 7 extends into the cavity, and the first group of temperature measuring probes 8 are in contact with the temperature measuring points set on the refractory bricks in the furnace shell 1.
S5: the temperature rising rate and the temperature rising temperature are set, the heating device 7 is turned on, the temperature rising operation is started, and the temperature measuring device is turned on.
S6: the temperature of the first group of temperature measuring probes 8 and the second group of temperature measuring probes 9 is measured by a temperature measuring device, and after the temperatures of the first group of temperature measuring probes 8 and the second group of temperature measuring probes 9 are stable (namely, the heat transfer of the system reaches a steady state), the temperature measuring device records the temperature values of the first group of temperature measuring probes 8 and the second group of temperature measuring probes 9.
S7: and drawing a temperature change curve of each site of the refractory brick according to each recorded temperature value, and evaluating the integral heat insulation performance of the refractory material according to the temperature change curve.
For the composite refractory bricks, the refractory layers, the heat insulation layers and the heat preservation layers are integrally formed, when the furnace body is built, the refractory layers of the tested composite refractory bricks face vertically upwards into the furnace, are flatly paved at the bottom in the furnace shell, and are bonded by using fire clay to obtain a first refractory brick layer; and placing the tested composite refractory bricks on the refractory layer of the paved first refractory brick layer along the inner wall of the furnace shell, wherein the refractory layer faces the furnace, the heat-insulating layer faces the inner wall of the furnace shell, and bonding the composite refractory bricks by using fire clay to obtain a second refractory brick layer, and a cavity is arranged in the middle.
The thermocouple is respectively contacted with the refractory bricks to be tested in the refractory layer, the heat insulation layer and the heat preservation layer of the composite refractory bricks, and the thermal resistor is adsorbed on the outer surface of the furnace shell through magnetic force.
The homogeneous refractory brick comprises a heat preservation layer unit, a heat insulation layer unit and a refractory layer unit which are mutually separated, and is respectively applied to a refractory layer, a heat insulation layer and a heat preservation layer of a kiln. When the furnace body is built, the heat preservation layer unit, the heat insulation layer unit and the refractory layer unit are paved at the bottom of the furnace shell from bottom to top in sequence, and the three refractory brick units are bonded by using fire clay to obtain a first refractory brick layer; and respectively building a heat preservation layer unit, a heat insulation layer unit and a fire-resistant layer unit on the paved first fire-resistant brick layer from outside to inside along the inner wall of the furnace shell, and bonding the three fire-resistant brick units by using fire clay to obtain a second fire-resistant brick layer, wherein a cavity is arranged in the middle.
The thermocouple is respectively in contact with the refractory bricks to be tested in the refractory layer unit, the heat insulating layer unit and the heat insulating layer unit of the composite refractory bricks, and the thermal resistor is adsorbed on the outer surface of the furnace shell through magnetic force.
The method of the embodiment of the present invention is the use method of the test device for evaluating the overall heat insulation performance of the refractory material described in embodiment 1, and includes all the technical solutions of embodiment 1, and has the beneficial effects described in embodiment 1, which are not described herein. Other points not mentioned in this embodiment are referred to in the foregoing embodiment 1.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the present invention.
Claims (5)
1. The test device for evaluating the overall heat insulation performance of the refractory material is characterized by comprising a furnace shell and a furnace cover, wherein:
The upper end of the furnace shell is open, a first refractory brick layer with a closed bottom wall is horizontally paved in the bottom wall of the furnace shell through refractory bricks, a second refractory brick layer with a closed side wall is annularly arranged in the side wall of the furnace shell through refractory bricks, the refractory ends of the refractory bricks in the first refractory brick layer and the second refractory brick layer face the inside of the furnace shell, and the first refractory brick layer and the second refractory brick layer enclose a cavity with the closed bottom wall and the closed side wall and the open upward;
a heating device and a first group of temperature measuring probes are arranged below the furnace cover, the furnace cover is covered on an opening at the upper end of the furnace shell in a sealing manner, the heating device stretches into the cavity, and the first group of temperature measuring probes are in contact with temperature measuring points set on the refractory bricks in the furnace shell;
A second group of temperature measuring probes are arranged on the outer surface of the side wall of the furnace shell, and the first group of temperature measuring probes and the second group of temperature measuring probes are connected with a temperature measuring device;
the refractory bricks are composite refractory bricks, the composite refractory bricks comprise a refractory layer, a heat insulation layer and a heat preservation layer which are sequentially arranged and integrally formed, and the refractory layer of the composite refractory bricks faces the inside of the furnace shell; the temperature measuring points are arranged on the fire-resistant layer, the heat-insulating layer and the heat-insulating layer, and temperature measuring holes for the first group of temperature measuring probes to be inserted are drilled at the temperature measuring points;
Or the refractory bricks are homogeneous refractory bricks, the homogeneous refractory bricks comprise mutually separated heat preservation layer units, heat insulation layer units and refractory layer units, and the heat preservation layer units, the heat insulation layer units and the refractory layer units are sequentially arranged in the furnace shell from outside to inside; the temperature measuring points are arranged on the refractory layer unit, the heat insulating layer unit and the heat insulating layer unit, and temperature measuring holes for inserting the first group of temperature measuring probes are drilled at the temperature measuring points;
the second group of temperature measuring probes are adsorbed on the outer surface of the side wall of the furnace shell through magnetic force, or the outer surface of the side wall of the furnace shell is provided with a mounting groove, and the second group of temperature measuring probes are arranged in the mounting groove.
2. The apparatus for evaluating the overall insulating properties of a refractory material of claim 1, wherein the refractory bricks in the first and second layers of refractory bricks are bonded by a fireclay.
3. The test device for evaluating the overall heat insulation performance of a refractory material according to claim 2, wherein the furnace shell and the furnace cover are made of steel, the furnace shell is cylindrical in shape, the heating device is a heating rod, the first group of temperature measuring probes are thermocouple probes, the second group of temperature measuring probes are thermal resistance probes, and the temperature measuring device is a multi-path composite inspection temperature measuring device.
4. A test method of the test device for evaluating the overall heat insulating performance of a refractory material according to any one of claims 1 to 3, characterized in that the method comprises:
s1: lifting the furnace cover by using a crane;
s2: horizontally laying refractory bricks along the bottom wall of the furnace shell, and enabling the refractory ends of the refractory bricks to face the inside of the furnace shell to obtain a closed first refractory brick layer;
S3: arranging refractory bricks on the first refractory brick layer in an annular manner along the side wall of the furnace shell, and enabling the refractory ends of the refractory bricks to face the inside of the furnace shell to obtain a closed second refractory brick layer;
S4: the furnace cover is covered on the opening at the upper end of the furnace shell in a sealing way, the heating device extends into the cavity, and the first group of temperature measuring probes are in contact with the temperature measuring points set on the refractory bricks in the furnace shell;
S5: setting a heating rate and a heating temperature, turning on a heating device, and starting heating operation;
S6: measuring the temperatures of the first group of temperature measuring probes and the second group of temperature measuring probes by a temperature measuring device, and recording the temperature values of the first group of temperature measuring probes and the second group of temperature measuring probes after the temperatures of the first group of temperature measuring probes and the second group of temperature measuring probes are stable;
S7: and drawing a temperature change curve of each site of the refractory brick according to each recorded temperature value, and evaluating the integral heat insulation performance of the refractory material according to the temperature change curve.
5. The method of claim 4, wherein in S2 the refractory bricks are bonded by fireclay, and in S3 the refractory bricks are bonded by fireclay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111118838.7A CN113702426B (en) | 2021-09-24 | 2021-09-24 | Test device and test method for evaluating integral heat insulation performance of refractory material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111118838.7A CN113702426B (en) | 2021-09-24 | 2021-09-24 | Test device and test method for evaluating integral heat insulation performance of refractory material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113702426A CN113702426A (en) | 2021-11-26 |
| CN113702426B true CN113702426B (en) | 2024-05-14 |
Family
ID=78661703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111118838.7A Active CN113702426B (en) | 2021-09-24 | 2021-09-24 | Test device and test method for evaluating integral heat insulation performance of refractory material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113702426B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002116167A (en) * | 2000-10-11 | 2002-04-19 | Nichias Corp | Measuring instrument and measuring method for thermal conductivity |
| CN102507639A (en) * | 2011-10-14 | 2012-06-20 | 兰州理工大学 | Device and method for measuring solid-liquid phase engineering coefficients of heat conductivity of material |
| CN203999743U (en) * | 2014-07-03 | 2014-12-10 | 陕西省电力设计院 | A kind of oil heating hollow interlayer is incubated wireless temperature control continuous annealer |
| CN105637354A (en) * | 2013-10-15 | 2016-06-01 | 美国石膏公司 | Fire resistance performance prediction method of wallboard |
| CN110726662A (en) * | 2019-10-22 | 2020-01-24 | 方大炭素新材料科技股份有限公司 | Experimental device for evaluating molten slag iron and erosion resistance of refractory material |
| CN211263077U (en) * | 2019-11-04 | 2020-08-14 | 中国建材检验认证集团股份有限公司 | High-temperature pressurization and vacuum-pumping test device |
| CN111735839A (en) * | 2020-08-13 | 2020-10-02 | 吉林大学 | Comprehensive testing device for heat conduction, expansion and crack propagation in high-temperature pyrolysis of oil shale |
-
2021
- 2021-09-24 CN CN202111118838.7A patent/CN113702426B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002116167A (en) * | 2000-10-11 | 2002-04-19 | Nichias Corp | Measuring instrument and measuring method for thermal conductivity |
| CN102507639A (en) * | 2011-10-14 | 2012-06-20 | 兰州理工大学 | Device and method for measuring solid-liquid phase engineering coefficients of heat conductivity of material |
| CN105637354A (en) * | 2013-10-15 | 2016-06-01 | 美国石膏公司 | Fire resistance performance prediction method of wallboard |
| CN203999743U (en) * | 2014-07-03 | 2014-12-10 | 陕西省电力设计院 | A kind of oil heating hollow interlayer is incubated wireless temperature control continuous annealer |
| CN110726662A (en) * | 2019-10-22 | 2020-01-24 | 方大炭素新材料科技股份有限公司 | Experimental device for evaluating molten slag iron and erosion resistance of refractory material |
| CN211263077U (en) * | 2019-11-04 | 2020-08-14 | 中国建材检验认证集团股份有限公司 | High-temperature pressurization and vacuum-pumping test device |
| CN111735839A (en) * | 2020-08-13 | 2020-10-02 | 吉林大学 | Comprehensive testing device for heat conduction, expansion and crack propagation in high-temperature pyrolysis of oil shale |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113702426A (en) | 2021-11-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105005632B (en) | The blast furnace crucible corrosion Forecasting Methodology of multiple layer refractory tile stove wall construction | |
| CN105181509B (en) | A kind of detection method of refractory material performance | |
| Zhao et al. | Study on the early warning mechanism for the security of blast furnace hearths | |
| CN106226347A (en) | A kind of displacement measurement system of the vertical high temperature thermal dilatometer | |
| CN113702426B (en) | Test device and test method for evaluating integral heat insulation performance of refractory material | |
| CN103389320A (en) | Measuring device and method of coiled material radial equivalent heat conductivity coefficient | |
| CN105463142B (en) | A kind of method that molten iron temperature measures in blast furnace crucibe | |
| CN107860228B (en) | Refractory material heat conduction detection test furnace and detection method thereof | |
| CN205982147U (en) | Vertical a plurality of big sample high temperature thermal dilatometer | |
| CN112878988B (en) | Equipment and method for evaluating heat preservation and heat insulation performance of well cementation cement | |
| CN207051225U (en) | A kind of ceramic beaverboard heat conductivity measuring device | |
| CN201047779Y (en) | Electric thermo-couple with temperature correction and monitoring hole | |
| CN208653673U (en) | Short branch electric thermo-couple temperature verifies furnace | |
| CN208383667U (en) | Concrete At High Temperature test block pore pressure test device | |
| CN107167551B (en) | The test device of concrete structure performance in a kind of simulated fire | |
| CN101941790B (en) | Method for prolonging service life of PDP float glass furnace arch | |
| CN111044556A (en) | Method and device for measuring load temperature strain coefficient of concrete sample at high temperature | |
| CN206038173U (en) | Device based on high quartz melting furnace temperature is measured to transient state heat transfer theory | |
| CN216386856U (en) | Heat conductivity coefficient measuring device under high temperature based on steady state heat flow method | |
| Watts et al. | THE TRANSFER OF HEAT THROUGH REFRACTORIES AND ITS DETERMINATION | |
| Nikiforov et al. | Thermal stresses generated in the lining of a steel ladle | |
| Rosch et al. | Heat transfer measurements in the Bridgman configuration | |
| Deng et al. | Compressive Creep Prediction of Corundum-Mullite Refractories Based on BP Neural Network | |
| CN114384113B (en) | Single-sided double-probe explosive heat conductivity coefficient measurement method | |
| CN116399129B (en) | Refractory material heat insulation performance test furnace and test method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |