CN208621542U - A kind of fireproof coating fire resistance experimental rig - Google Patents
A kind of fireproof coating fire resistance experimental rig Download PDFInfo
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- CN208621542U CN208621542U CN201821182427.8U CN201821182427U CN208621542U CN 208621542 U CN208621542 U CN 208621542U CN 201821182427 U CN201821182427 U CN 201821182427U CN 208621542 U CN208621542 U CN 208621542U
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Abstract
The utility model discloses a kind of fireproof coating fire resistance experimental rigs, warm acquisition system and heat run furnace are carried on the back including temperature control cabinet, sample, the two sides of furnace body opening are equipped with the first rotary lock nose, and heat run furnace further includes the first, second refractory slab, small sample mounting rack and fire resisting plugging block；The central position of second refractory slab is equipped with rectangular through-hole, includes multiple small sample mounting holes on small sample mounting rack, the size of fire resisting plugging block is consistent with quantity with small sample.It includes temperature acquisition recording equipment and 1-3 patch type thermocouple that sample, which carries on the back warm acquisition system, and each patch type thermocouple is each equipped with a thermocouple clamp to be fixed on the back fire face of sample, and patch type thermocouple is connected to temperature acquisition recording equipment by conducting wire.The utility model has many advantages, such as that at low cost, easy to operate, the test period is short.The device that can be used as research fireproof coating fire-resistance property uses, and also can be used as common heating furnace use.
Description
Technical field
The utility model relates to a kind of experimental rigs of fireproof coating fire resistance, belong to Fire Science and material science skill
Art field.
Background technique
Steel construction is one of main building structure, and with the development of economy, the range of steel construction application is more and more extensive, special
It is not the application in industry and civil buildings.Steel construction has many advantages, such as that intensity is high, good from heavy and light, ductility, at home and abroad
It is widely applied in construction industry.Although steel do not have combustibility, its thermal coefficient is big, and fire resistance is poor, is not added anti-
Fire protection fire endurance only has 0.25 hour, the requirement of China's Code for fire protection design of buildings is far not achieved, so fire resistance is poor
It is its deadly defect, therefore, the fire endurance of Yao Tigao steel construction, it is necessary to implement effective flameproof protection to it.Steel construction
Measurements for fire-protection is various informative, and in practical projects, direct spraying fireproof coating is a kind of ideal, reliable, economic, practical
Method.The superior fire protecting performance of fire-resistant coating for steel structure, receives the welcome of users, obtains in structural steelwork extensively
Application.Therefore, scientific and reasonable selection fireproof coating kind is to Guan Chong to the fire safety for ensureing steel construction
It wants.
Require in fire-resistant coating for steel structure national standard (GB14907-201X draft for deliberation), special building (petrochemical industry, power station,
The engineerings such as power transmission and distribution facility, outdoor) it with common fireproof coating include that expansion steel-structure fireproofing coating will be subjected to acid resistance, alkaline-resisting
Property, resistance to expose examining for the environmental tests such as hot, humidity resistance, freeze-thawing resistant cyclicity, salt fog resistance, UV resistant radiation property
It tests.In standard, using HN400 × 200 as defined in GB/T 11263-2010, hot rolled H-shaped (section factor is 161 m-1) and GB/
36b hot rolling I-steel (section factor 126m as defined in T 706-2008-1) it is used as test substrate.When test specimen makes, press first
The relevant regulations setting test specimen thermocouple (mean temperature for being used to measurement test specimen) of GB/T 9978.6, then makes according to product
The process conditions as defined in specification coat test specimen fire surface, form the girder steel test specimen of coating.Test specimen answers horizontal, freely-supported
It is mounted on horizontal burning test furnace.Test specimen is not less than 4000mm by fiery length, the supporting point spacing (net span) of test specimen and total
Length should meet the relevant regulations in GB/T 9978.6 to sample dimensions.
It can be seen that existing fire-resistant coating for steel structure detection method have initial stage it is at high cost (test specimen is huge, coating use
It is more), experimental project amount big (hanging devices such as overhead traveling crane need to be used), experimentation cost high (the huge energy consumption height in trial furnace space, discharge gas
More post-processings are at high cost), the features such as test period is long, be unfavorable for fire-resistant coating for steel structure and carry out a large number of experiments, cause to study
Project is difficult, so that the environmental issues such as energy-saving and emission-reduction are severeer.
Utility model content
The purpose of this utility model be prior art there are aiming at the problem that, a kind of test of fireproof coating fire resistance is provided
Device, with easy to operate, experimentation cost is low, data accuracy is high and high repeatability and other advantages.The utility model is suitable as
Experimental rig studies the fire resistance of fireproof coating, is research fireproof coating fire resistance effective means.
In order to solve the above technical problems, a kind of fireproof coating fire resistance experimental rig of the utility model, including temperature control
Cabinet processed, sample carry on the back warm acquisition system and heat run furnace, are equipped with Intelligent Digital temperature controller, institute in the temperature control cabinet
Stating heat run furnace includes furnace body, and platinum-rhodium alloy armoured thermocouple, the platinum-rhodium alloy armoured thermocouple are equipped in the furnace body
It is connected by conducting wire and the Intelligent Digital temperature controller, the front of the furnace body is equipped with the opening of the rectangle of L1*H1, institute
It states open-mouth and encloses width equipped with one as the positioning step of W, it is rotary to be equipped with first on the furnace body and positioned at open two sides
Lock nose, the heat run furnace further include the first refractory slab, the second refractory slab, small sample mounting rack and fire resisting plugging block；Institute
It states the first refractory slab and the second refractory slab is the rectangle of (L1+W) * (H1+W), the central position of second refractory slab is set
There are the rectangular through-hole of L2*H2, L2=150mm；The small sample mounting rack includes two support bars, during the support bar includes
Between supporting section and both ends bending segment, the bending segment at both ends is to the same direction 90-degree bent, the length of the intermediate supports section
It is consistent with the height of second refractory slab, N stull is connected between two support bars, being located at intermediate supports section, two
A support bar is equipped with the rotary lock nose in position one-to-one second, and the distance between adjacent crossbrace is 70mm, two supports
The distance between corresponding second rotary lock nose in position is L2+5mm on item；N-1 is formd by two support bars and N number of stull
The size of a small sample mounting hole, the fire resisting plugging block is consistent with quantity with small sample；Sample back temperature acquisition system
System includes temperature acquisition recording equipment and 1-3 patch type thermocouple, and each patch type thermocouple is each equipped with a thermocouple folder
Tool, the thermocouple clamp includes the nut being fixed on sample, is combined with bolt, the patch type thermocouple with the nut
It is fixed between the bolt and the back fire face of sample, the patch type thermocouple is connected to the temperature acquisition by conducting wire and remembers
Recording apparatus.
Compared with prior art, the utility model has the beneficial effects that
The utility model controls heat run furnace interior temperature by temperature control cabinet, makes in-furnace temperature in strict accordance with GB/T
6.1 and 6.2 relevant regulations in 9978.1-2008 can also need to work out heating step according to research.It will be prevented by piece fixture
Fiery coating sample or other fire retarding components are fixed on heat run fire door, by small sample backplate by fireproof coating small sample
It is fixed on heat run fire door, thermocouple clamp is used for the thermocouple of fixation measuring fireproof coating sample unexposed surface temperature, temperature
Acquisition and recording equipment connects thermocouple, acquires fireproof coating sample or the unexposed surface temperature of other fire retarding components.
Experimental rig provided by the utility model has the advantages that low manufacture cost, easily operated, experimentation cost is low etc..This reality
It is used with the device that novel experimental rig can be used as research fireproof coating fire-resistance property, can simultaneously serve as common heating furnace
It uses.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of heat run furnace in the utility model；
Fig. 2 is the appearance schematic diagram of heat run furnace shown in Fig. 1；
Fig. 3 is the schematic diagram for being inserted into Elema in the utility model in heat run furnace；
Fig. 4 is the structural schematic diagram of the second refractory plate in the utility model；
Fig. 5-1 is the structural schematic diagram of the second refractory plate and its small sample mounting rack in the utility model；
Fig. 5-2 is the structural schematic diagram of support bar shown in Fig. 5-1；
Fig. 6 is temperature measuring point schematic layout pattern on sample in the utility model；
Fig. 7 is thermometric patch type thermocouple fixing structure schematic diagram in the utility model；
Fig. 8 is the structural schematic diagram of heat-resisting plugging block in the utility model；
Fig. 9 is the method flow diagram tested using the utility model fireproof coating fire resistance experimental rig；
Figure 10 is the heating curve of embodiment one；
Figure 11 is the heating curve of embodiment two.
In figure: 1- furnace body, 2- platinum-rhodium alloy armoured thermocouple, 3- is open, 4- positioning step, the rotary lock nose of 5- first,
The first refractory slab of 6-, the second refractory slab of 7-, 8- small sample mounting rack, 81- support bar, 82- intermediate supports section, 83- bending
Section, 84- stull, the rotary lock nose of 85- second, 9- rectangular through-hole, 10- thermocouple clamp, 11- nut, 12- bolt, 13- patch
Chip thermocouple, 14- Elema, 15- plugging block.
Specific embodiment
The experimental rig of the utility model and sample are described in further detail With reference to embodiment.
A kind of mentality of designing of fireproof coating fire resistance experimental rig of the utility model is that temperature control cabinet passes through electric wire
Heat run furnace 1 is connected, equipped with test specimen installation fixed structure (using rotary lock in the utility model on heat run furnace 1
Nose) it is used to fix test component, it is possible to use small sample mounting rack conveniently installs small sample, thus realization pair
Small sample is tested, and fixes patch type thermocouple by thermocouple clamp on test component, and temperature acquisition record is set
The standby patch type thermocouple connected by conducting wire acquires sample unexposed surface temperature data in real time, and frequency acquisition is adjustable.
The utility model proposes a kind of fireproof coating fire resistance experimental rig, including temperature control cabinet, sample back temperature
Acquisition system and heat run furnace are equipped with Intelligent Digital temperature controller in the temperature control cabinet.As shown in Figure 1, described
Heat run furnace includes furnace body 1, and platinum-rhodium alloy armoured thermocouple 2, the platinum-rhodium alloy armoured thermocouple are equipped in the furnace body 1
2 are connected by conducting wire and the Intelligent Digital temperature controller.The opening of rectangle of the front of the furnace body 1 equipped with L1*H1
The positioning step 4 that a circle width is W, W=5~10mm are equipped at 3, described open 3.On the furnace body 1 and it is located at the two of opening 3
Side is equipped with the first rotary lock nose 5.The heat run furnace further includes the first refractory slab 6, the second refractory slab 7, small sample
Mounting rack 8 and fire resisting plugging block 15；As shown in Figure 2 and Figure 4, first refractory slab 6 and the second refractory slab 7 are (L1+W) *
(H1+W) rectangle, as shown in figure 4, the central position of second refractory slab 7 is equipped with the rectangular through-hole 9, L2=of L2*H2
150mm；As shown in Fig. 5-1 and Fig. 5-2, the small sample mounting rack 8 includes two support bars 81, and the support bar 81 includes
The bending segment 83 of intermediate supports section 82 and both ends, the bending segment 83 at both ends is to the same direction 90-degree bent, the intermediate supports
The length of section 82 is consistent with the height of second refractory slab 7, between two support bars 81, is being located at company at intermediate supports section 82
It is connected to N stull 84, two support bars 81 are equipped with the rotary lock nose 85 in position one-to-one second, between adjacent crossbrace 84
Distance be 70mm, the distance between corresponding second rotary lock nose 85 in position is L2+5mm on two support bars 81；By two
A support bar 81 and N number of stull form N-1 small sample mounting hole, as shown in figure 8, the fire resisting plugging block 15 is big
It is small consistent with quantity with small sample.
It includes temperature acquisition recording equipment and 1-3 patch type thermocouple 13, each patch that the sample, which carries on the back warm acquisition system,
Formula thermocouple 13 is each equipped with a thermocouple clamp 10, and the thermocouple clamp 10 includes the nut 11 being fixed on sample,
Be combined with bolt 12 with the nut 11, the patch type thermocouple 13 be fixed on the bolt 12 and sample back fire face it
Between, the patch type thermocouple 13 is connected to the temperature acquisition recording equipment by conducting wire.
Sample for the utility model fireproof coating fire resistance experimental rig is fire retarding component or being coated with fire prevention applies
The iron plate of material；As shown in Figure 6 and Figure 7, the size of the sample is 500mm*500mm, and 3 are equipped on the back fire face of the sample
A thermocouple clamp 10, the thermocouple clamp 10 are used to carry on the back the fixed patch type thermocouple 13 in fiery face, the thermocouple in sample
Fixture 10 includes the nut 11 being fixed on sample, is combined with bolt 12 with the nut, solid between the bolt 12 and sample
Surely there is patch type thermocouple 13, the patch type thermocouple 13 is connected to temperature acquisition recording equipment by conducting wire.By adjusting
Thermocouple is fixed and unloaded to the elastic of bolt in fixture.When test, 3 settings of thermocouple clamp 10 are carried on the back on fiery face in sample
Temperature measuring point at, be laid out as follows: a thermocouple clamp is arranged in the A point that sample carries on the back fiery face, other two thermocouple clamps divide
It is not arranged in sample to carry on the back at the B point and C point in fiery face, A point is the central location that sample carries on the back fiery face, and B point and C point are located at the two of A point
Side, wherein B point is located at the apex that sample carries on the back fiery face diagonal, and C point is located at sample and carries on the back fiery face line symmetrical above and below or left and right
On the line of symmetry and edge far from B point.
If the sample used is small sample, such as sample size is 150mm*70mm, then to needing to utilize a heat
One patch type thermocouple 13 is fixed on the center at the sample back side by galvanic couple fixture 10.
In the utility model, the adjustment that four groups of Elemas 14 are used for furnace temperature is equipped in test heating furnace, Elema 14
Layout as shown in figure 3, close to furnace body 1 rear wall arrange two groups, respectively arrange one group in the left and right sidewall of furnace body 1, the temperature
There is Intelligent Digital temperature controller in control cabinet, therein silicon-controlled and rectifying tube is controlled by the program of input, thus
The size of current of Elema 14 in control input test heating furnace 1；The Intelligent Digital temperature controller connects heat run
Platinum-rhodium alloy armoured thermocouple 2 in furnace adjusts heated current by the feedback of the electric thermo-couple temperature in time；The temperature control
Usually there are also four groups of ammeters and one group of voltmeter on cabinet panel processed, show in heating furnace respectively four groups of Elemas 14 electric current and
Operating voltage；Test heating furnace is to provide electric current by temperature control cabinet the Elema 14 in furnace is made to generate heat, the test heating
The operating temperature range of furnace is 0-1200 DEG C, and temperature signal is to intelligence in the offer of platinum-rhodium alloy armoured thermocouple 2 heating furnace
Type digital temperature control.Heating start button and work light, heating examination are equipped on the panel of the temperature control cabinet
Furnace power-off button and alarm lamp are tested, heating start button is pressed, it is just normally opened to represent heating for work light display green
Begin, if in-furnace temperature is higher or lower than the certain range of setting value, alarm lamp is displayed in red, and work light extinguishes, heating furnace
It automatically powers off, if manual intervention test heating furnace power-off, can press heating furnace cut-off button；Temperature control cabinet is equipped with radiation air
Fan reduces control cabinet temperature；It is equipped with master switch in the temperature control cabinet, can control the on-off of entire control cabinet power supply.
The examination of fireproof coating fire resistance is carried out using the fireproof coating fire resistance experimental rig and sample of the utility model
The method tested, as shown in Figure 9, the specific steps are as follows:
Step 1 opens the power supply of experimental rig, by Intelligent Digital temperature controller established standards heating curve, such as
It is consistent that Elevated Temperature Conditions are tested after fruit, then only need to be set when using for the first time, Intelligent Digital temperature controller has note
Recall function.Actual temp setting is as follows:
Step 2: patch type thermocouple 13 is placed at the temperature measuring point that sample is carried on the back on fiery face by thermocouple clamp, such as
Shown in Fig. 6, wherein the temperature measuring point A of the geometric center of sample is necessary, other two o'clocks B and C, diagonal line of the B point in sample
Apex, C point is on the edge of sample line of symmetry for crossing A point, and far from B point.
Step 3: pressing START button in the case where " fire door " is closed, the green of work light display this moment is often
It is bright, the START button of Intelligent Digital temperature controller is pressed, pre- temperature program is carried out；Have following two according to the size of sample
One of kind situation:
When the size of sample is identical as the size of the first refractory slab 6, the first refractory slab 6 is served as into fire door, is arranged on
At the opening 3 of furnace body, after furnace body 1 seals, heated up in advance；When furnace temperature reaches set temperature, the first refractory slab 6 is removed, will be tried
Sample is placed at the opening 3 of furnace body 1, executes step 4；
When testing small sample, the second refractory slab 7 with small sample mounting rack 8 is served as into fire door, and
It is installed at the opening 3 of furnace body 1, and fire resisting plugging block 15 is installed on small sample mounting rack 8, after furnace body 1 seals, carry out
Pre- heating, when furnace temperature meets test temperature, according to the number of small sample, removes all or part of fire resisting plugging block 15 and changes
Upper small sample executes step 4；
Step 4: opening temperature acquisition and recording equipment, carries out temperature acquisition, temperature collection essence by patch type thermocouple 13
Degree can be adjusted as needed；
Step 5: stopping heating and data acquisition, examination when the temperature that sample carries on the back temperature measuring point on fiery face is more than predetermined value
End is tested, Intelligent Digital temperature controller is closed；Furnace body is cooled to room temperature naturally removes sample again, closes experimental rig.
It takes pictures and necessary measurement to the situation of sample side towards the fire.
Embodiment 1: with temperature rise according to standard heating curve, test specimen is that (500 × 500 × 6) mm carries on the back fiery face brush fire prevention
For coating iron plate, the heating curve that the present embodiment 1 is set is as shown in Figure 10, is tested with the utility model experimental rig
Steps are as follows:
(1) power supply and control switch for opening a whole set of experimental rig ensure that fire door is closed state.By patch type thermocouple
The temperature measuring point of iron plate is placed in by thermocouple clamp；
(2) start temperature program, start sample unexposed surface temperature data collection system；
(3) when furnace temperature reaches set temperature, fire door is opened, iron plate is placed in fire door rapidly and furnace is fixed on by fixture
At door；
(4) when iron plate back temperature collection point temperature more than 500 DEG C when, stop heating and data acquisition, off-test；
(5) if the temperature of the collection point of iron plate back temperature stops heating and data after being less than 500 DEG C, temperature rise 3 hours
Acquisition, off-test；
(6) temperature of furnace to be tested is down to room temperature, closes entire experimental rig.
(7) photo of the data and test front and back sample that keep records of.
Embodiment 2: with temperature rise according to standard heating curve, test specimen is that the fiery face brush fire prevention of (150 × 70 × 6) mm back applies
For expecting iron plate, the heating curve that the present embodiment 2 is set is as shown in figure 11, the step tested with the utility model experimental rig
It is rapid as follows:
(1) small sample backplate is placed in fire door, is placed in small sample backplate hole using the plugging block of small sample backplate
Mouthful.Open the power supply and control switch of a whole set of experimental rig.Thermocouple is placed in the temperature measuring point of iron plate by thermocouple clamp；
(2) start temperature program, start-up temperature data collection system；
(3) it when furnace temperature reaches set temperature, when meeting test temperature, takes away plugging block and sample is placed in small sample
Backplate hole, is fixed using fixture；
(4) when iron plate back temperature collection point temperature more than 500 DEG C when, stop heating and data acquisition, off-test；
(5) if the temperature of the collection point of iron plate back temperature stops heating and data after being less than 500 DEG C, temperature rise 3 hours
Acquisition, off-test；
(6) temperature of furnace to be tested is down to room temperature, closes entire experimental rig.
(7) photo of the data and test front and back sample that keep records of.
To sum up, the temperature control cabinet 1 in the utility model plays the role of controlling heat run furnace temperature during the test,
Heat run furnace 2 plays the role of heating test specimen, and 3 tool of test specimen folder plays fixed sample, and small sample backplate 4 plays fixation
The effect of small sample, thermocouple clamp 5 play the role of fixed patch type thermocouple, and temperature acquisition system 6 plays acquisition examination
Test unexposed surface temperature effect.Experimental rig and sample provided by the utility model have low manufacture cost, it is easily operated, test at
This low advantage.The utility model is suitable as the performance of experimental rig research fireproof coating fire resisting, is that research fireproof coating is resistance to
Fiery performance effective means.
Although utility model is described above in conjunction with figure, the utility model is not limited to above-mentioned specific
Embodiment, the above mentioned embodiment is only schematical, rather than restrictive, those skilled in the art
Under the enlightenment of the utility model, in the case where not departing from the utility model aims, many variations can also be made, these are
Belong within the protection of the utility model.
Claims (1)
1. a kind of fireproof coating fire resistance experimental rig, including temperature control cabinet, sample carry on the back warm acquisition system and heat run
Furnace is equipped with Intelligent Digital temperature controller in the temperature control cabinet, and the heat run furnace includes furnace body (1), the furnace
Platinum-rhodium alloy armoured thermocouple (2) are equipped in body (1), the platinum-rhodium alloy armoured thermocouple (2) passes through conducting wire and the intelligence
Type digital temperature control is connected, which is characterized in that
The opening (3) of rectangle of the front of the furnace body (1) equipped with L1*H1, it is W's that a circle width is equipped at open (3)
Positioning step (4) on the furnace body (1) and is located at the two sides of open (3) and is equipped with the first rotary lock nose (5), the heating
Trial furnace further includes the first refractory slab (6), the second refractory slab (7), small sample mounting rack (8) and fire resisting plugging block (15)；Institute
It states the first refractory slab (6) and the second refractory slab (7) is the rectangle of (L1+W) * (H1+W), the center of second refractory slab (7)
The rectangular through-hole (9) of L2*H2, L2=150mm are equipped at position；The small sample mounting rack (8) includes two support bars
(81), the support bar (81) includes the bending segment (83) at intermediate supports section (82) and both ends, the bending segment (83) at both ends to
The same direction 90-degree bent, the length of the intermediate supports section (82) is consistent with the height of second refractory slab (7), and two
It is connected with N stull (84) between support bar (81), at intermediate supports section (82), two support bars (81) are equipped with position
Set the one-to-one second rotary lock nose (85), the distance between adjacent crossbrace (84) is 70mm, on two support bars (81)
The distance between corresponding second rotary lock nose (85) in position is L2+5mm；It is formed by two support bars (81) and N number of stull
N-1 small sample mounting hole, the size of the fire resisting plugging block (15) are consistent with quantity with small sample；
It includes temperature acquisition recording equipment and 1-3 patch type thermocouple (13), each patch type that the sample, which carries on the back warm acquisition system,
Thermocouple (13) is each equipped with a thermocouple clamp (10), and the thermocouple clamp (10) includes the nut being fixed on sample
(11), it is combined with bolt (12) with the nut (11), the patch type thermocouple (13) is fixed on the bolt (12) and examination
Between the back fire face of sample, the patch type thermocouple (13) is connected to the temperature acquisition recording equipment by conducting wire.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821182427.8U CN208621542U (en) | 2018-07-25 | 2018-07-25 | A kind of fireproof coating fire resistance experimental rig |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821182427.8U CN208621542U (en) | 2018-07-25 | 2018-07-25 | A kind of fireproof coating fire resistance experimental rig |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609714A (en) * | 2020-05-19 | 2020-09-01 | 南京上元分析仪器有限公司 | Steel construction fire-retardant coating efficiency test stove that insulates against heat |
| CN114487007A (en) * | 2022-01-25 | 2022-05-13 | 应急管理部天津消防研究所 | Assembly type steel frame device capable of replacing fire-resistant test component and test method |
| CN114858962A (en) * | 2022-04-27 | 2022-08-05 | 中国地质大学（武汉） | Device for testing fire resistance of fireproof plugging material and using method thereof |
-
2018
- 2018-07-25 CN CN201821182427.8U patent/CN208621542U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111609714A (en) * | 2020-05-19 | 2020-09-01 | 南京上元分析仪器有限公司 | Steel construction fire-retardant coating efficiency test stove that insulates against heat |
| CN114487007A (en) * | 2022-01-25 | 2022-05-13 | 应急管理部天津消防研究所 | Assembly type steel frame device capable of replacing fire-resistant test component and test method |
| CN114487007B (en) * | 2022-01-25 | 2024-02-06 | 应急管理部天津消防研究所 | Assembled steel frame device capable of replacing fireproof test components and testing method |
| CN114858962A (en) * | 2022-04-27 | 2022-08-05 | 中国地质大学（武汉） | Device for testing fire resistance of fireproof plugging material and using method thereof |
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