CN212585473U

CN212585473U - Electric furnace device for member fireproof protection design and fireproof supervision

Info

Publication number: CN212585473U
Application number: CN202021472936.1U
Authority: CN
Inventors: 尹亮; 阚强; 李智鸿
Original assignee: Shanghai Xiaohong Information Technology Co ltd; Tianjin Fire Research Institute of MEM
Current assignee: Shanghai Xiaohong Information Technology Co ltd; Tianjin Fire Research Institute of MEM
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-02-23
Anticipated expiration: 2030-07-23

Abstract

The utility model provides an electric furnace device for component fireproof protection design and fireproof supervision, wherein a furnace body is fixed on a control display transmission box through a square furnace chamber chassis; the lower end of the constraint heat insulation assembly I is embedded into the upper end of the furnace body; or the lower end of the constraint heat insulation assembly II is embedded into the upper end of the furnace body, the heat insulation cover is buckled on the constraint heat insulation assembly I and the constraint heat insulation assembly II, and an additional thermocouple is respectively fixed in the thermocouple fixing through hole I, the thermocouple fixing through hole II and the thermocouple fixing through hole III of the heat insulation cover. The control module is respectively connected with the heating body, the data acquisition module, the wireless communication module, the display part, the control part and the cable part, the furnace chamber thermocouple is respectively connected with the control module and the data acquisition module, the three additional thermocouples are respectively connected with the data acquisition module through the cable part, and the wireless communication module is in wireless connection with the mobile terminal to realize communication. The device can simulate the real boundary relation between the protected material and the heat insulation material, quickly form a supervision result report, and greatly improve the fire-fighting supervision and law enforcement efficiency.

Description

Electric furnace device for member fireproof protection design and fireproof supervision

Technical Field

The utility model relates to the field of building structure fireproof design, fireproof material (combined system) heat insulation performance test and fire control supervision, in particular to an electric furnace device for member fireproof protection design and fireproof supervision; the component fireproof protection design and the electric furnace device for fireproof supervision can simulate the relation (connection fixed boundary and heat transfer boundary) between a protected material (combined system) and a heat insulating material real boundary, set a simple equivalent temperature rise curve, are easy to research and try the component fireproof protection (combined system) effect, and are convenient for developing witness experiments and quickly forming supervision result reports during field fire-fighting random inspection.

Background

According to the principle of passive fire protection, the current fire protection design of the components mainly adopts a mode of coating, cladding and fixing heat insulation materials on the surface of the protected component materials. The outer insulation material may be a single material or a laminate of several materials. Particular configurations also include the presence of a cavity between the material of the protected component and the insulation, such as a light gauge steel hollow partition or the like.

After the components with the fireproof heat-insulating materials are processed, the components are placed in a wall furnace, a column furnace or a beam plate furnace for fixing, and a fire resistance test is carried out according to a standard temperature rise curve so as to obtain a fire resistance limit test report meeting different requirements and meet the requirements of fire protection design, audit, construction and supervision. Currently, more members stay in an empirical level from the perspective of the fireproof protection design of the member, and a refined fireproof protection design cannot be developed yet. If the column component fails in the standard fire resistance test for 175min, the column component is judged to have a secondary fire resistance grade, if the column component is used according to the result, the heat insulation material is wasted, and if the aim is to obtain the primary fire resistance grade (the fire resistance limit reaches 3.00 h), the fire protection design of the component still needs to be carried out again and the component needs to be checked again, so that high cost such as test is borne; generally, the height (length) of the member can reach 3.0m, and if the expected test result cannot be obtained once, the time, materials, manpower and transportation cost are wasted when the test member is manufactured for many times. This is not conducive to a large number of repetitive or recurrent attempts in research and development of related products and scientific research; as for the adopted temperature rise curve, the most fire resistance detection adopts the standard temperature rise curve specified in GB/T9978, and the small part of fire resistance detection adopts GB/T26784 with special purposes. The fire-resistant furnaces for executing the temperature-rising curves are all injection gas furnaces, and because the temperature-rising curves are quickly raised in the early stage and the space in the furnaces is large, the requirement of the temperature-rising rate is very difficult to meet by using electric heating. However, the gas furnace can only be used as a fixed device in terms of structure and safety, and cannot meet the requirements of carrying out a witness test on convenience and reliability during field fire-fighting spot inspection; even for small electric furnace equipment, the temperature rising characteristics of the standard temperature rising curve impose relatively high requirements on heating (number of heating elements) and control (feedback and current response) capabilities, without increasing the cost, so that this difficulty can be ameliorated by setting a simple equivalent temperature rising curve.

The overall technical profile of the current related art is as follows:

(1) the electric furnace is widely used;

the existing devices for testing and evaluating the fire resistance, high temperature resistance and heat insulation performance of plates and fireproof coatings are divided into heat source supply modes (heating modes) which are mainly electric heating, flame spraying and infrared heating. When the electric heating mode is adopted, the electric heating mode is mainly supported by an electric furnace. Meanwhile, the electric furnace is widely applied to various industries, the control, safety and energy-saving technology is mature, and the application number is as follows: CN201911084659.9 describes a current electric furnace installation of typical composition, and similarly there are application numbers: CN 201721644799.3. And corresponding additional functions are added for different purposes, and the application numbers: CN201810684454.3 introduces an electric furnace base with wheels and springs, which ensures the safety of the electric furnace during the carrying process; application No.: CN200710053436.7 introduces an electric furnace device in which a camera is separately arranged from an observation hole to observe and record the state of a sample in the test process, so as to obtain the condition of a high-temperature surface;

(2) mainly aiming at the fireproof coating, and a small part aiming at a single fireproof plate;

in the aspect of testing the fire-resistant and heat-insulating properties of building materials (fire-retardant coating), the application number is as follows: CN200610167761.1 discloses a test electric furnace and a method for enabling the shape characteristics of a sample to be close to a back temperature-time curve during national type inspection and medium-sized fire-resistant limit beam furnace test, wherein the temperature rise curve of GB/T9978 standard used for the furnace temperature execution type inspection is adopted, and the thickness of an expansion type fireproof coating coated on a steel rectangular thin plate meets the requirement of GB 14907. The device also comprises a data acquisition unit, a program instrument, a computer and other components; application No.: CN201520084481.9 discloses an oil burner device that is used for steel construction coating manufacturing enterprise self-built coating product efficiency test that insulates against heat, has simple structure, characteristics that the space is little. The furnace cover is provided with a sunken open groove, so that the furnace cover can support a coating sample and reduce heat loss of a back fire surface of the test piece by covering heat insulation cotton. Also comprises an acquisition module and a computer test display part. Analysis finds that the mobile fuel device easily causes safety problems, and the fuel stove cannot meet the carrying requirement of a fire prevention supervision site. Meanwhile, the test piece is only subjected to heat preservation on the back surface but not subjected to adiabatic heat treatment on the vertical surfaces on the periphery, the structural scheme is only suitable for coating the test piece with the thinner fireproof coating, and the one-dimensional heat transfer condition cannot be formed for the thicker plate-shaped test piece or the combined test piece. The furnace cover vertical surface material which is contacted with the peripheral vertical surface of the paint test piece is consistent with the top surface of the furnace cover and the surface of the furnace body, and is easy to be known as a sheet iron, such as the heat loss from the peripheral vertical surface of the test piece is accelerated; similar technology also has application number: CN201420684921.X, steel structure test piece coated with fireproof paint is used as a test base piece, the surface of the paint faces to the inside of the furnace, the back surface of the paint is covered with a heat insulation pad, the test base piece and the heat insulation pad are placed in a base piece placing groove formed by a furnace cover provided with a square through hole and a clamping table, and the peripheral vertical surfaces of the base piece are not subjected to additional heat insulation treatment. Meanwhile, vertical force is applied to the back surface (the heat insulation pad) of the base piece through the weight and the cylinder piston, and the condition that a member coated with paint bears load is simulated. The design enables the furnace cover and the furnace body to bear extra vertical pressure, and brings great challenge to the structural strength of the furnace body; application No.: CN201721644799.3 discloses a test furnace device for testing fire resistance by placing building materials in a furnace body. Analysis shows that the test mode does not distinguish the fire-receiving surface and the back fire surface of the building material, is completely placed in a high-temperature environment, cannot observe the change characteristics of the material properties in the process and cannot research the problem of one-dimensional heat transfer; application No.: CN201010170539.3 discloses a gas test furnace device for the heat-insulating property of a fireproof coating on the surface of a concrete tunnel test piece, which is an improvement on the basis of a large horizontal fire-resistant test furnace device of the existing national detection mechanism and has the characteristics that the device is immovable and the specification of the test piece is required to be consistent and larger; application No.: CN201721661011.X discloses a self-designed fireproof coating high-temperature fire resistance testing device by referring to the standards of concrete structure fireproof coating (GB 28375) and steel structure fireproof coating (GB 14907), and analysis shows that the failure criterion for judging whether the coating reaches the fire resistance limit is lower than the national standard; heating the inner cavity of the furnace body to 2000 ℃ or higher is not necessary, and the manufacturing cost is high even if the heating can be realized; the arrangement of the air inlet is not beneficial to the uniform temperature in the furnace cavity, and the high-temperature air is discharged through the air outlet, so that the air outlet is unnecessary and common equipment components are difficult to realize, and the design has no possibility of simulating different furnace environments; in terms of installation of the test sample, the test sample is not essentially different from the test sample in fig. 3 in GB 14907-2012, and only a heat insulation pressure plate shaped like a Chinese character 'hui' with a square opening in the middle is added on the back of the sample, and the opening of the heat insulation pressure plate is consistent with the size of the square notch of the sample test platform. The heat insulation pressing plate plays a role in compacting a gap between a test sample and a sample test board, and can generate adverse influence on the expansion of the coating at the square opening and influence the temperature field inside the test sample; application No.: CN201410352396.6 discloses a fire resistance testing instrument and method for steel structure fireproof paint and finish type fireproof paint, and analysis shows that the coating of the finish type fireproof paint component manufactured according to GB 12441-. The 3 listed embodiments provide different sizes of furnace body inner cavity diameters, the plane shape of the decorative fireproof coating component can be round or square, and the decorative fireproof coating component can completely cover the furnace body inner cavity, but obviously has a gap with the vertical surface of the groove at the upper part of the furnace cavity (the component is smaller than the size of the plug at the lower side of the furnace cover). When being applied to thicker plate-shaped test piece or combined test piece, the test piece is similar to the application number: CN201520084481.9 can not form one-dimensional heat transfer condition just, and need to build a plurality of furnace body inner chambers even furnace body and satisfy the demand of different test piece specifications. In addition, a fiber fire or hydrocarbon fire control program is also arranged, and a display screen for displaying a theoretical or actual temperature curve can be used for leading out a USB port of the Excel table; application No.: CN201711434084.X discloses a heat insulation performance testing device for a composite tile material with the specification of 1.75m × 1.75m × 0.05m under the conditions of simulating outdoor solar vertical irradiation and air flow, wherein the composite tile material is overlapped in an L-shaped eave of a vertical section, and the horizontal tail end of the L-shaped eave is connected with the outer side wall of the top of an insulation can. Devices of the type principle also include application numbers: CN201620569006.5 and the like; application No.: CN201520053281.7 discloses a device for respectively placing and fixing two samples in two sample placing grooves on the top surface of a box body, heating by using an infrared lamp and evaluating the heat insulation effect of different materials by comparing the temperatures of the back surfaces of the samples of the heat insulation material;

summarizing the above related art, it can be found that:

(1) the true boundary relationship between the protected material and the insulation material is not simulated in place. In the aspect of fire resistance test of the fireproof paint, only the surface adhesion between the fireproof paint (thin and thick) and the protected material (steel plate) and the heat preservation of the back of the protected material are paid attention to, and a technical scheme for forming a heat insulation boundary on the peripheral vertical surface of a tested piece is not clearly proposed, so that the problem of one-dimensional heat transfer cannot be accurately simulated. The test of the fireproof board is the same peripheral boundary condition, the test is only carried out on a single-layer board (single-layer composite board), the test of a combined protection system sample consisting of a board + board or a board + cotton and a protected material is not carried out, and the connection and fixation relationship between the multilayer materials and the thermal resistance influence between contact surfaces of the layers cannot be considered naturally.

(2) The used temperature rise curve meets the standard, but the requirements on the heating capacity and the control system of the electric furnace are higher, the application of a large number of existing electric furnaces with manually set 'time-temperature' step-shaped temperature rise curves is limited, the technical threshold is high, and the manufacturing cost is correspondingly increased. Meanwhile, when the thermal insulation material protection structure obtained from a small electric furnace test is applied to a large-size test piece of a standard fire-resistant furnace, the reliability is lacked, the safety is often biased, and the obtained thermal insulation effect cannot reach the design expectation.

(3) There is no complete set of experimental device which can lead related enterprises, research and development units and the like to automatically carry out the test of the heat insulation effect of the board + cotton (cavity) on the protected material.

(4) The technical scheme of carrying out witness experiments to on-site fire control selective examination is still lacked, and some devices can be used but are not designed originally, so that the problems of inconvenience in moving and carrying and the like exist. Some of the techniques (application numbers: CN201310610330.8, CN 201220055111.9) are directed only to intumescent fire-retardant coatings or their own physical and chemical performance parameters, and not to the protected members or systems formed by the protected materials and the insulating materials. On the other hand, although the real-time display of the test data and the wired transmission between the computer are noticed, the requirement of rapidly forming a supervision result report in the spot fire-fighting random inspection field by 'follow-up record (real object picture and phenomenon description judgment record') cannot be met.

Disclosure of Invention

In view of the situation and the existing deficiencies of the prior art in the related field, the utility model provides a component fire protection design and fire prevention supervise and use electric stove device.

The utility model overcomes prior art: the real boundary relation between the protected material and the heat insulating material is not supported by a perfect technical scheme, namely, the fireproof coating protects the steel plate and does not pay attention to the simulation of the heat insulating boundary of the vertical surface around the tested piece, and the connection and fixation boundary of the tested piece and the heat transfer boundary (interface thermal resistance) between contact surfaces of all layers of a protection scheme (system) of plate and cotton (cavity) are not paid attention to; the utilization of the electric furnace which adopts the step-shaped heat-preservation curve setting mode conventionally is limited by using the temperature-rise curve specified by the standard, the requirements on the heating capacity and the control system of the electric furnace are higher, namely, the corresponding manufacturing cost is increased, and the expected result reliability of the same heat-insulation structure when the heat-insulation structure is tested in a large-scale fire-resistant test furnace can not be improved by a simple equivalent temperature-rise curve; the special test device which can enable enterprises, research and development units to use a coating method (the outer layer of the protected material is coated with a fireproof plate, fireproof cotton and the like) to test the heat insulation effect of the protected material does not have portable software and hardware which are suitable for carrying out witness experiments on the heat insulation effect by spot fire control sampling inspection and quickly forming a fireproof supervision result report.

The utility model can realize real simulation of the relation between the connection fixing boundary and the heat transfer boundary between the protected material and the heat insulating material, in particular to the construction patterns of the connection fixing and interface thermal resistance relation such as 'plate + plate', 'plate + cotton', 'cavity' and the like in the cladding method; the method provides a step-shaped 'time-temperature' setting hardware of 'two broken lines', reduces the requirements on the heating capacity and the control system of the electric furnace, enables the conventional electric furnace to have the testing capacity, and increases the reliability of the same fireproof protection structure for obtaining the same heat insulation effect in a large-scale fireproof test furnace; the whole set of experimental device for carrying out heat insulation performance test on the protected material by using a cladding method is provided for related enterprises and research and development units, the possibility that the national monitoring organization cannot obtain a satisfactory fire-resistant limit grade by one-time inspection so as to cause waste is reduced, and the current situation that the scientific research and development are influenced because the related units cannot build expensive fire-resistant furnaces is improved; the special and flexibly-carried hardware equipment is supplemented for carrying out the field fire-fighting selective inspection witness test on the fire-proof protection material and the structural pattern, so that the real situation is recorded in the selective inspection process at the first time, and the capability of quickly forming a supervision result report is realized.

The boundary relation between the protected material and the heat insulation material obtained by applying the technical scheme is real and reliable, the realization mode is convenient, the simple equivalent temperature rise curve reduces the manufacturing cost of the electric furnace and the threshold of the conventional electric furnace for testing, so that related enterprises, research and development units can have the conditions of trial production, research and development of member fire protection design, the success rate of 'one-time inspection delivery' is improved, special hardware equipment and related software are provided for the spot fire control spot inspection witness test, the requirement of quickly forming a fire protection supervision result report is met, and the fire control law enforcement efficiency is greatly improved.

The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the utility model provides a component fire protection design and fire prevention supervise use electric stove device, includes the furnace body that rectangle cavity oven and square furnace chamber chassis constitute, rectangle cavity oven is through establishing the heating member in realizing the interior heating of furnace chamber, its characterized in that: the furnace also comprises a control display transmission box, a furnace chamber thermocouple, a constraint heat insulation assembly, a heat insulation cover and an additional thermocouple;

the upper end of the rectangular hollow furnace wall is provided with a circle of L-shaped inner cornice, and the center of the square furnace chamber chassis is provided with a fixing hole;

the control display transmission box is a hollow rectangular box body, a through wire hole is formed in the center of the upper surface of the control display transmission box, a display part, a control part and a cable part are respectively arranged on one side panel of the control display transmission box, and a control module, a data acquisition module and a wireless communication module are arranged in the control display transmission box;

the constraint heat insulation assembly is divided into a constraint heat insulation assembly I or a constraint heat insulation assembly II;

the constraint heat insulation assembly I is composed of a well-shaped heat insulation clamping grid, a heat insulation lateral top block, a bolt cap and a heat insulation filling block I;

the heat insulation filling block I is composed of four high filling strip blocks and four high filling corner blocks;

the two well-shaped heat-insulating clamping grids are horizontally arranged at intervals, a heat-insulating lateral jacking block is respectively arranged between eight pairs of bolt plates which are opposite up and down of the two well-shaped heat-insulating clamping grids, the jacking surfaces I of the two heat-insulating lateral jacking blocks which are positioned at the head and the tail ends of each well-shaped inner rib of the well-shaped heat-insulating clamping grids are centered,

the screw rods of eight bolts are respectively inserted into the bolt plate holes of eight bolt plates of the lower-layer well-shaped heat-insulating clamping grating and the penetrating round holes I of the eight heat-insulating lateral top blocks in sequence, extend out of the bolt plate holes of the eight bolt plates of the upper-layer well-shaped heat-insulating clamping grating and are in threaded connection with eight bolt caps,

the end plate of each bolt, each bolt plate of the lower-layer well-shaped heat-insulation clamping grid and the lower square boss I of each heat-insulation lateral top block are sequentially in close surface-to-surface contact from bottom to top, and the upper square boss I of each heat-insulation lateral top block, each bolt plate of the upper-layer well-shaped heat-insulation clamping grid and each bolt cap are sequentially in close surface-to-surface contact from bottom to top;

a high filling strip block is respectively inserted into four strip-shaped gap areas formed between the eight heat-insulating lateral top blocks, a high filling angle block is respectively inserted into four angular gap areas formed between the eight heat-insulating lateral top blocks,

the bottom surfaces of the four high filling bar blocks, the bottom surfaces of the four high filling corner blocks, the bottom surfaces of the eight end plates and the lower surface of the heat insulation layer coated outside the lower well-shaped heat insulation clamping grid are positioned on the same plane;

the constraint heat insulation assembly II consists of a well-shaped heat insulation clamping grid, a heat insulation lateral top frame, a bolt cap and a heat insulation filling block II;

the heat insulation filling block II is composed of four short filling strip blocks and four short filling corner blocks;

two well-shaped heat-insulating clamping grids are horizontally arranged at intervals, a heat-insulating lateral top frame is arranged between the two well-shaped heat-insulating clamping grids,

the screw rods of eight bolts are respectively inserted into the bolt plate holes of eight bolt plates of the lower-layer well-shaped heat-insulating clamping grating and eight penetrating round holes II of the heat-insulating lateral top frame in sequence, extend out of the bolt plate holes of the eight bolt plates of the upper-layer well-shaped heat-insulating clamping grating and are in threaded connection with eight bolt caps,

the end plate of each bolt, each bolt plate of the lower-layer well-shaped heat-insulation clamping grid and each bottom surface square boss II of the heat-insulation lateral top frame are sequentially in close surface-to-surface contact from bottom to top, and each top surface square boss II of the heat-insulation lateral top frame, each bolt plate of the upper-layer well-shaped heat-insulation clamping grid and each bolt cap are sequentially in close surface-to-surface contact from bottom to top;

respectively plugging a short filling strip block into four strip-shaped gap areas formed among eight bolt plates of a lower-layer well-shaped heat-insulating clamping grid below a heat-insulating lateral top frame, and respectively plugging a short filling corner block into four angular gap areas formed among the eight bolt plates;

the bottom surfaces of the four short filling bar blocks, the bottom surfaces of the four short filling corner blocks, the bottom surfaces of the eight end plates and the lower surface of the heat insulation layer coated outside the lower well-shaped heat insulation clamping grid are positioned on the same plane;

the furnace body is fixed on the upper surface of the control display transmission box through a square furnace chamber chassis, and the fixing hole is aligned with the wire hole;

the lower end of the restraint heat insulation component I is tightly embedded into a circle of L-shaped inner cornice at the upper end of the furnace body,

the heat insulation cover is buckled on the constraint heat insulation assembly I, the concave embedded well-shaped groove at the bottom of the heat insulation cover is aligned and buckled with the upper-layer well-shaped heat insulation clamping grid of the constraint heat insulation assembly I, the eight bolt plates of the upper-layer well-shaped heat insulation clamping grid are vertically opposite to the eight vertical square through grooves of the heat insulation cover, the sample edge alignment line at the bottom surface of the heat insulation cover is jointed with the four high filling strip blocks and the inner edge at the top surface of the four high filling angle blocks,

an additional thermocouple is respectively fixed in the thermocouple fixing through hole I, the thermocouple fixing through hole II and the thermocouple fixing through hole III of the heat insulation cover;

or the lower end of the constraint heat insulation assembly II is tightly embedded into a circle of L-shaped inner cornice at the upper end of the furnace body;

the heat insulation cover is buckled on the constraint heat insulation assembly II, the bottom of the heat insulation cover is concavely embedded with the # -shaped groove, the constraint heat insulation assembly II is an upper layer of the well-shaped heat insulation clamping grid, the eight bolt plates of the upper layer of the well-shaped heat insulation clamping grid are aligned and buckled, the eight vertical square through grooves of the heat insulation cover are opposite up and down, the sample edge alignment line of the bottom surface of the heat insulation cover is tangent with the upper edge of the sample hole of the heat insulation lateral top frame along the circumference,

the control module is respectively connected with the heating body, the data acquisition module, the wireless communication module, the display part, the control part and the cable part, the furnace chamber thermocouple is vertically fixed in a square furnace chamber chassis fixing hole in the furnace body and penetrates through a wire hole to be respectively connected with the control module and the data acquisition module, the three additional thermocouples are respectively connected with the data acquisition module through the cable part, and the wireless communication module is wirelessly connected with the mobile terminal to realize communication.

The utility model has the advantages that: the utility model discloses a component fire protection design and fire control supervise are for electric stove device "board + board" or "board + cotton (cavity)" and the protection combined system sample that is constituted by the protection material, cladding method component fire protection sample develops the heat-proof quality test promptly and provides the simulation screw outside the plane and in the heat transfer boundary condition of connecting fixed boundary condition and considering interfacial thermal resistance to multilayer protection material, compensate simultaneously because the test sample facade does not possess all around adiabatic boundary condition or the gap is not noticed the one-dimensional heat transfer hypothesis that arouses and became invalid, and then can't carry out the not enough of accurate evaluation to the heat-proof quality of fire protection structure, can compromise the PLASTIC LAMINATED, the cotton felt, structure demands such as coating and cavity. The temperature-rising curve in the equivalent furnace is simple and convenient to set, the effect is reliable, the manufacturing cost of hardware equipment is reduced, and the access threshold of the existing electric furnace refitting test is utilized. The device provides a simple experimental device for self-test of research and development units and production units of related fireproof protection materials, provides technical and economic guarantee for repeated reproducibility tests, improves the success rate of the product for achieving the fireproof limit target through one-time inspection, and avoids unnecessary waste. The method provides software and hardware conditions for the on-site fire protection supervision evidence test, can record the first-hand condition in time, quickly forms a supervision result report, and greatly improves the fire protection supervision enforcement efficiency.

The design of the control display transmission box fully meets the functional integration requirements of a laboratory general test and a field fire control supervision evidence test;

by the design of the constraint heat insulation assembly, the stress constraint condition outside and in the plane of a sample caused by fixing single and multiple layers of heat insulation materials (containing cavities) on a protected material and the real condition of interface heat resistance caused by out-of-plane extrusion are simulated. And the reliable heat insulation boundary is adopted on the peripheral vertical surface of the sample, so that the one-dimensional transient heat transfer assumption can be met, and the heat insulation performance of the fireproof protection material (construction combination system) can be accurately evaluated. A self-balancing counter force (clamping and fixing) system is formed between the constraint heat insulation assembly and the tested piece, the furnace body only bears the light self weight of the tested piece and the constraint heat insulation assembly, no additional loading force from the outside exists, and the requirement on the mechanical strength of the furnace body is low;

the design of the heat insulation cover can be used for researching two boundary conditions of heat insulation of the back surface of the tested piece or heat exchange with air, namely simulating the condition that the column component is wrapped by the periphery of the heat insulation structure and a room on one side of the partition wall component is on fire, and the room on the other side is initially at room temperature, and having wide heat transfer boundary applicability;

through the functional design of the mobile terminal, the requirements of carrying out a witness test, quickly recording, summarizing and publishing a supervision result and storing a data file in the current field fire-fighting spot inspection are completely met.

The utility model provides a component fire prevention protection design and fire control supervision need indispensable software and hardware condition, is from the comprehensive promotion in the aspect of reliability, convenience, both towards enterprise, the urgent need that the laboratory level test demand of research unit also satisfied fire control law enforcement scene, has huge social security and economic benefits, can promote scientific, meticulous, the specialized level of architectural structure fire prevention and supervision effectively.

Drawings

FIG. 1 is an overall view of an electric furnace apparatus of the present invention;

FIG. 2 is an exploded view of the structure of the electric furnace apparatus of the present invention;

FIG. 3 is a schematic view of the structure of the display control transmission box of the present invention;

FIG. 4 is a sectional view of the well-shaped heat-insulating clamping grid of the present invention;

FIG. 5 is a perspective view of the thermally insulated side lift block of the present invention;

FIG. 6 is a perspective view of the thermally insulated side top frame of the present invention;

FIG. 7 is a view showing the structure of the bolt of the present invention;

FIG. 8 is a schematic view of the heat insulating block I of the present invention;

FIG. 9 is a schematic view of a heat-insulating block II according to the present invention;

FIG. 10 is a top view of the insulating cover of the present invention;

FIG. 11 is a bottom view of the heat insulating cover of the present invention;

FIG. 12 is a schematic view of the restraint and insulation assembly I of the present invention;

FIG. 13 is a schematic structural view of a constrained thermal insulation assembly II of the present invention;

fig. 14 is a block diagram of the circuit connection of the present invention;

FIG. 15 is a schematic view of the usage flow of the present invention;

FIG. 16 is a diagram showing the assembly and usage of the restraint heat insulation assembly I and the heat insulation cover of the present invention;

FIG. 17 is a view showing the assembly and usage of the restraint heat insulation assembly II and the heat insulation cover of the present invention;

FIG. 18 is a cross sectional view of a thermocouple middle surface of a furnace chamber of the electric furnace apparatus of the present invention;

FIG. 19 is a cross sectional view of a middle surface of a bolt of the electric furnace apparatus of the present invention;

FIG. 20 is an enlarged view of a portion A of FIG. 19 according to the present invention;

FIG. 21 is an enlarged view of a portion B of FIG. 19 according to the present invention;

FIG. 22 is a schematic view showing the composition of a cubic test specimen I according to the present invention;

FIG. 23 is a schematic view of a test installation of a cubic test specimen I of the present invention;

FIG. 24 is a schematic view showing the composition of a cubic sample II according to the present invention;

FIG. 25 is a schematic view of the test installation of the cubic test specimen II of the present invention;

FIG. 26 is a schematic view of the composition of a cubic sample III according to the present invention;

fig. 27 is a schematic view of a test installation of a cubic test sample iii according to the present invention;

FIG. 28 is a schematic view showing the composition of a cylindrical sample I according to the present invention;

fig. 29 the utility model discloses a I test installation sketch map of cylinder sample.

Detailed Description

As shown in fig. 1 to 29, an electric furnace device for member fire protection design and fire supervision comprises a furnace body 1 consisting of a rectangular hollow furnace wall 1-1 and a square furnace chamber chassis 1-2, wherein the rectangular hollow furnace wall 1-1 is internally provided with a heating body to realize heating in the furnace chamber, and further comprises a control display transmission box 2, a furnace chamber thermocouple 3, a constraint heat insulation assembly 4, a heat insulation cover 5 and an additional thermocouple 6.

The upper end of the rectangular hollow furnace wall 1-1 is provided with a circle of L-shaped inner cornice 1-3, and the center of the square furnace chamber chassis 1-2 is provided with a fixing hole 1-4.

The control display transmission box 2 is a hollow rectangular box body, a through wire hole 2-1 is formed in the center of the upper surface of the control display transmission box 2, a display part 2-2, a control part 2-3 and a cable part 2-4 are respectively arranged on one side panel of the control display transmission box 2, and a control module, a data acquisition module and a wireless communication module are arranged inside the control display transmission box 2.

The constrained thermal insulation assembly 4 is divided into a constrained thermal insulation assembly I4A or a constrained thermal insulation assembly II 4B.

The constraint heat insulation assembly I4A consists of a well-shaped heat insulation clamping grid 4-1, a heat insulation lateral top block 4-2, a bolt 4-4, a bolt cap 4-5 and a heat insulation filling block I4-6,

the heat insulation filling block I4-6 is composed of four high filling strip blocks 4-6-1 and four high filling corner blocks 4-6-2.

Two well-shaped heat-insulating clamping grids 4-1 are horizontally arranged at intervals, a heat-insulating lateral top block 4-2 is respectively arranged between eight pairs of bolt plates 4-1-2 which are opposite up and down of the two well-shaped heat-insulating clamping grids 4-1, and the top pressure surfaces I4-2-4 of the two heat-insulating lateral top blocks 4-2 positioned at the head and tail ends of each well-shaped inner rib 4-1-1 of each well-shaped heat-insulating clamping grid 4-1 are in alignment;

the screw rods 4-4-1 of eight bolts 4-4 are respectively inserted into bolt plate holes 4-1-3 of eight bolt plates 4-1-2 of a lower-layer well-shaped heat-insulating clamping grid 4-1 and through round holes I4-2-3 of eight heat-insulating lateral top blocks 4-2 in sequence, extend out of the bolt plate holes 4-1-3 of the eight bolt plates 4-1-2 of the upper-layer well-shaped heat-insulating clamping grid 4-1 and are in threaded connection with eight bolt caps 4-5, the end plate 4-4-2 of each bolt 4-4, each bolt plate 4-1-2 of the lower-layer well-shaped heat-insulating clamping grid 4-1 and the lower square boss I4-2-1 of each heat-insulating lateral top block 4-2 are in close surface-to-surface contact from bottom to top in sequence, the upper square boss I4-2-1 of each heat insulation lateral top block 4-2, each bolt plate 4-1-2 and each bolt cap 4-5 of the upper-layer well-shaped heat insulation clamping grid 4-1 are sequentially in close surface-to-surface contact from bottom to top;

four strip-shaped gap areas formed among the eight heat-insulation lateral top blocks 4-2 are respectively plugged with one high-filling strip block 4-6-1, four angle-shaped gap areas formed among the eight heat-insulation lateral top blocks 4-2 are respectively plugged with one high-filling corner block 4-6-2, and the bottom surfaces of the four high-filling strip blocks 4-6-1, the bottom surfaces of the four high-filling corner blocks 4-6-2, the bottom surfaces of the eight end plates 4-4-2 and the lower surface of the heat-insulation layer 4-1-4 wrapped outside the lower-layer well-shaped heat-insulation clamping grid 4-1 are positioned on the same plane.

The constraint heat insulation assembly II 4B consists of a well-shaped heat insulation clamping grid 4-1, a heat insulation lateral top frame 4-3, a bolt 4-4, a bolt cap 4-5 and a heat insulation filling block II 4-7;

the heat insulation filling block II 4-7 is composed of four short filling strip blocks 4-7-1 and four short filling corner blocks 4-7-2.

Two well-shaped heat-insulating clamping grids 4-1 are horizontally arranged at opposite intervals, a heat-insulating lateral top frame 4-3 is arranged between the two well-shaped heat-insulating clamping grids 4-1, screws 4-4-1 of eight bolts 4-4 are respectively inserted into bolt plate holes 4-1-3 of eight bolt plates 4-1-2 of the lower well-shaped heat-insulating clamping grid 4-1 and eight penetrating round holes II 4-3-3 of the heat-insulating lateral top frame 4-3 in sequence, the bolt plate holes 4-1-3 of the eight bolt plates 4-1-2 of the upper well-shaped heat-insulating clamping grid 4-1 are extended out and are in threaded connection with eight bolt caps 4-5, an end plate 4-4-2 of each bolt 4-4, and each bolt plate 4-1-2 of the lower well-shaped heat-insulating clamping grid 4-1, Each bottom surface square boss II 4-3-1 of the heat insulation lateral top frame 4-3 is sequentially in close surface-to-surface contact from bottom to top, each top surface square boss II 4-3-1 of the heat insulation lateral top frame 4-3, each bolt plate 4-1-2 of the upper layer well-shaped heat insulation clamping grid 4-1 and each bolt cap 4-5 are sequentially in close surface-to-surface contact from bottom to top;

a short filling strip block 4-7-1 is respectively plugged into four strip-shaped gap regions formed among eight bolt plates 4-1-2 of a lower-layer well-shaped heat-insulating clamping grid 4-1 below a heat-insulating lateral top frame 4-3, and a short filling corner block 4-7-2 is respectively plugged into four corner-shaped gap regions formed among the eight bolt plates 4-1-2;

the bottom surfaces of the four short filling bar blocks 4-7-1, the bottom surfaces of the four short filling corner blocks 4-7-2, the bottom surfaces of the eight end plates 4-4-2 and the lower surface of the heat insulation layer 4-1-4 wrapped outside the lower-layer well-shaped heat insulation clamping grid 4-1 are positioned on the same plane.

The furnace body 1 is fixed on the upper surface of the control display transmission box 2 through a square furnace chamber chassis 1-2, and the fixing hole 1-4 is aligned with the wire hole 2-1;

the constraint heat insulation assembly 4 is characterized in that the lower end of a constraint heat insulation assembly I4A is tightly embedded into a circle of L-shaped inner cornice 1-3 at the upper end of the furnace body 1;

the heat insulation cover 5 is buckled on the constraint heat insulation assembly 4 which is a constraint heat insulation assembly I4A, the bottom of the heat insulation cover 5 is concavely embedded with a # -shaped groove 5-5 and the constraint heat insulation assembly 4 is aligned and buckled with an upper layer of a well-shaped heat insulation clamping grid 4-1 of the constraint heat insulation assembly I4A, eight bolt plates 4-1-2 of the upper layer of the well-shaped heat insulation clamping grid 4-1 are vertically opposite to eight vertical square through grooves 5-4 of the heat insulation cover 5, a sample edge alignment line 5-8 on the bottom surface of the heat insulation cover 5 is attached to the inner edges of the top surfaces of four high filling strip blocks 4-6-1 and four high filling corner blocks 4-6-2, an additional thermocouple 6 is respectively fixed in the thermocouple fixing through hole I5-1, the thermocouple fixing through hole II 5-2 and the thermocouple fixing through hole III 5-3 of the heat insulation cover 5;

or the lower end of a constraint heat insulation assembly 4 which is a constraint heat insulation assembly II 4B is tightly embedded into a circle of L-shaped inward-shrinkage cornice 1-3 at the upper end of the furnace body 1, a heat insulation cover 5 is buckled on the constraint heat insulation assembly 4 which is a constraint heat insulation assembly II 4B, the bottom of the heat insulation cover 5 is concavely embedded into a # -shaped groove 5-5 and is aligned and buckled with an upper # -shaped heat insulation clamping grating 4-1 of the constraint heat insulation assembly 4 which is a constraint heat insulation assembly II 4B, eight bolt plates 4-1-2 of the upper # -shaped heat insulation clamping grating 4-1 are vertically opposite to eight vertical square through grooves 5-4 of the heat insulation cover 5, a sample edge alignment line 5-8 at the bottom of the heat insulation cover 5 is tangent to the sample hole 4-3-4 of the heat insulation lateral top frame 4-3 along the circumference, a thermocouple fixing through hole I5-1 and a thermocouple fixing through hole II 5-, And an additional thermocouple 6 is respectively fixed in the thermocouple fixing through holes III 5-3.

The control module is respectively connected with the heating body, the data acquisition module, the wireless communication module, the display part 2-2, the control part 2-3 and the cable part 2-4, the furnace chamber thermocouple 3 is vertically fixed in a fixing hole 1-4 of a square furnace chamber chassis 1-2 in the furnace body 1 and penetrates through a wire hole 2-1 to be respectively connected with the control module and the data acquisition module, the three additional thermocouples 6 are respectively connected with the data acquisition module through the cable parts 2-4, and the wireless communication module is wirelessly connected with the mobile terminal to realize communication.

Eight tail ends of four well-shaped inner ribs 4-1-1 of a well-shaped heat insulation clamping grid 4-1 are respectively connected with a horizontally placed bolt plate 4-1-2, the center of each bolt plate 4-1-2 is provided with a through bolt plate hole 4-1-3, and the outer surface of the well-shaped inner rib 4-1-1 is wrapped with a layer of outer wrapping heat insulation layer 4-1-4 with a square cross section.

The heat-insulating top block 4-2-2 of the heat-insulating lateral top block 4-2 is rectangular, a horizontal square boss I4-2-1 is oppositely arranged on the same side of the upper end face and the lower end face of the heat-insulating lateral top block, a through round hole I4-2-3 penetrating through the pair of square bosses I4-2-1 and the heat-insulating top block 4-2-2 is arranged on the central connecting line of the two square bosses I4-2-1, and the vertical face of the heat-insulating top block 4-2-2 far away from the other square boss I4-2-1 is a top pressing face I4-2-4.

The heat-insulating top frame 4-3-2 of the heat-insulating side top frame 4-3 is a block body with a plane square shape, a through sample hole 4-3-4 is arranged at the center of the test piece, the ring vertical surface of the sample hole 4-3-4 is a top pressing surface II 4-3-5, eight square bosses II 4-3-1 are welted and symmetrically arranged on the periphery of the top surface of the heat insulation top frame 4-3-2, the bottom surface of the heat insulation top frame 4-3-2 is provided with a square boss II 4-3-1 at the position corresponding to each square boss II 4-3-1 on the top surface, and a through round hole II 4-3-3 penetrating through the boss II 4-3-1 and the heat insulation top frame 4-3-2 is arranged on the central connecting line of each pair of boss II 4-3-1 in the vertical direction of the top surface and the bottom surface.

The vertical distance between the upper end of the thermocouple 3 in the furnace chamber and the surface of the sample to be tested facing the furnace chamber is 10 cm.

The plane outer contour of the well-shaped inner rib 4-1-1 is larger than the inner cross section of the rectangular hollow furnace wall 1-1.

The thickness of the heat-insulating lateral top block 4-2 in the direction vertical to the top pressure surface I4-2-5 is equal to that of the heat-insulating filling block I4-6 and equal to that of the L-shaped inward-shrinkage cornice 1-3.

The plane position of the thermocouple fixing through hole I5-1 is located at the center of the heat insulating cover 5.

The plane position of the thermocouple fixing through hole II 5-2 is located in the center of a square formed by the intersection of a square convex surface 5-7 and a sample edge opposite line 5-8.

The plane position of the thermocouple fixing through hole III 5-3 is located in the center of an inner side rectangle formed by the intersection of a rectangular convex surface 5-6 and a sample edge opposite line 5-8.

The mobile terminal functions as follows:

the first item is that a control instruction is sent to a wireless communication module in a control display transmission box 2 in a wireless communication mode, and an execution condition is received, such as a fault condition, and particularly, temperature data recorded by a data acquisition module is obtained in real time through the wireless communication module;

the second item has the functions of voice transcription character input and key input;

the third item has the functions of photographing and a photograph timer, namely, the photographed photograph is attached with the time taking the test start as the zero point, and the unit is second;

the fourth item, the main display interface of the mobile terminal includes: control and setting module, process monitoring module, report generation module, database module, packing transmission module, wherein:

(1) the control and setting module functions include: the connection or disconnection of the mobile terminal and the wireless communication module is controlled, the display time of the mobile terminal is synchronous with the built-in objective time of the control module of the control and display transmission box 2 by one key, the synchronous control test and the temperature data recording start, the asynchronous control test and the temperature data recording end, the table filling type input time and the corresponding furnace body 1 target temperature value are set, and the alarm threshold value of each additional thermocouple 6 connected with the cable part 2-4 is set;

(2) the process monitoring module functions include: the wireless connection state of the mobile terminal and the wireless communication module is displayed, the operation fault condition of each component of the electric furnace device is displayed, and the real-time development condition of the temperature-time of each additional thermocouple 6 and the furnace chamber thermocouple 3 connected with the cable parts 2-4 and the corresponding alarm threshold value reaching condition are displayed;

(3) the report generation module functions include: A. general information filling pages, such as engineering names, time and place, fire protection sampling information and fire protection status description; B. a temperature result page for displaying the temperature-time whole process situation of each additional thermocouple 6 and the furnace chamber thermocouple 3 connected with the cable part 2-4 at the time of finishing the temperature data recording; C. a typical moment photo display page, which is inserted into a sample photo which is shot in the test process and is accompanied with relative moment; D. a page for monitoring and testing the problems and the conclusions, and respectively inputting characters into a problem description frame and a conclusion frame; additionally, when any page from A to D is clicked, other pages are automatically in a minimized state and are automatically saved;

(4) the database module functions include: looking up the thermal performance, the construction requirements and the style of the common fireproof protection material and the corresponding national and local standard data;

(5) the packing transmission module functions include: the temperature-time data of the whole process obtained by the process monitoring module can be converted into an electronic form, all pages of the report generation module are combined and converted into a PDF file, and the PDF file can be transmitted to a computer and an electronic mailbox through a wireless network and can be sent to an owner receiving supervision and detection as required;

(6) additionally, the packaging transmission module can be accessed only after the temperature data recording is finished, and when any one of the modules (1) to (5) is started, other modules are in a minimized state and are automatically stored;

a method for using an electric furnace device for member fireproof protection design and fireproof supervision comprises the following steps:

four sets of example test specimens were to be conducted, including: cubic sample I7A, cubic sample II 7B, cubic sample III 7C, and cylindrical sample I8A.

S1, determining a test scene:

determining a test scene according to application needs, wherein S1A is laboratory test, and the electric furnace device can be operated and controlled by a common control display transmission box 2 corresponding to the electric furnace device to meet the requirements; the S1B type is a field supervision test, and the electric furnace device can meet the requirements only by using a mobile terminal to control the electric furnace device;

S1A, carrying out laboratory tests on a cubic sample I7A and a cubic sample II 7B;

S1B, carrying out on-site supervision test on a cubic test sample III 7C and a cylindrical test sample I8A;

s2, positioning the device on site: moving the electric furnace device to the site and placing the electric furnace device at a stable position;

s3, installing a sample to be tested: the optional appearance kind of the sample that awaits measuring includes square cube sample 7 in plane and cylinder sample 8, wherein:

the cubic sample I7A is formed by aligning the peripheral edges of two square heat insulation samples A10-1, one square heat insulation sample B11 and a square target sample 9-1 and sequentially pressing the two samples from bottom to top, and the bottom surface of the square heat insulation sample A10-1 at the lowermost layer faces a furnace chamber;

the cubic sample II 7B is formed by aligning the edges of the peripheries of two square heat insulation samples A10-1 and a square target sample 9-1 and sequentially pressing the two square heat insulation samples from bottom to top, and the bottom surface of the square heat insulation sample A10-1 at the lowest layer faces towards a furnace chamber;

the cubic sample III 7C is formed by aligning the peripheral edges of a square heat insulation sample A10-1, a square heat insulation sample A10-1 with a seam material 12 and a square target sample 9-1 and sequentially pressing the samples from bottom to top, and the bottom surface of the square heat insulation sample A10-1 at the lowest layer faces a furnace chamber;

the cylindrical sample I8A is formed by aligning the peripheral edges of two circular heat insulation samples A10-2 and a circular target sample 9-2 from bottom to top, a layer of sample cavity 13 is formed between the upper layer of circular heat insulation sample A10-2 and the circular target sample 9-2, and the bottom surface of the lowest layer of circular heat insulation sample A10-2 faces a furnace chamber;

S3A, when testing cube sample I7A, the installation procedure was as follows:

firstly, a constrained heat insulation assembly I4A is used, namely a cubic sample I7A is arranged between two well-shaped heat insulation clamping grids 4-1, a heat insulation lateral top block 4-2 is respectively arranged between eight pairs of bolt plates 4-1-2 which are opposite up and down of the two well-shaped heat insulation clamping grids 4-1, and top pressure surfaces I4-2-5 of the eight heat insulation lateral top blocks 4-2 are all contacted with the periphery of a vertical surface of the cubic sample I7A;

secondly, inserting the screw rods 4-4-1 of eight bolts 4-4 into the bolt plate holes 4-1-3 of eight bolt plates 4-1-2 of the lower well-shaped heat-insulating clamping grid 4-1 and the through round holes I4-2-3 of eight heat-insulating lateral top blocks 4-2 in sequence, extending out of the bolt plate holes 4-1-3 of the eight bolt plates 4-1-2 of the upper well-shaped heat-insulating clamping grid 4-1, and being in threaded connection with eight bolt caps 4-5, wherein the end plate 4-4-2 of each bolt 4-4, each bolt plate 4-1-2 of the lower well-shaped heat-insulating clamping grid 4-1 and the lower square boss I4-2-1 of each heat-insulating lateral top block 4-2 are in close surface contact in sequence from bottom to top, the upper square boss I4-2-1 of each heat insulation lateral top block 4-2, each bolt plate 4-1-2 of the upper layer of the well-shaped heat insulation clamping grid 4-1 and each bolt cap 4-5 are sequentially in close surface-to-surface contact from bottom to top, so that the upper and lower well-shaped heat insulation clamping grids 4-1 can provide enough clamping force for the cubic sample I7A in the thickness direction, and eight heat insulation lateral top blocks 4-2 positioned at the periphery of the cubic sample I7A can provide enough clamping force for the cubic sample I7A in the horizontal plane;

thirdly, respectively plugging four strip-shaped gap areas formed among the eight heat-insulation lateral top blocks 4-2 with one high-filling block 4-6-1, respectively plugging four angle-shaped gap areas formed among the eight heat-insulation lateral top blocks 4-2 with one high-filling angle block 4-6-2, wherein the bottom surfaces of the four high-filling block 4-6-1, the bottom surfaces of the four high-filling angle blocks 4-6-2, the bottom surfaces of the eight end plates 4-4-2 and the lower surface of the outer heat-insulation layer 4-1-4 of the lower-layer well-shaped heat-insulation clamping grid 4-1 are positioned on the same plane;

and fourthly, tightly embedding the assembly parts formed in the first step to the third step into the L-shaped inner cornice 1-3 of the furnace body 1.

When the cube sample II 7B is tested, the installation steps are the same as those of the cube sample I7A;

when testing the cubic sample III 7C, the installation steps are the same as those of the cubic sample I7A;

S3B, when testing the cylindrical sample I8A, the installation steps are as follows:

firstly, using a constraint heat insulation assembly II 4B, namely arranging a heat insulation lateral top frame 4-3 on a well-shaped heat insulation clamping grid 4-1 at the lower layer, arranging a cylindrical sample I8A in a sample hole 4-3-4 in the center of the heat insulation lateral top frame 4-3, and arranging a well-shaped heat insulation clamping grid 4-1 on the heat insulation lateral top frame 4-3;

secondly, inserting the screw rods 4-4-1 of eight bolts 4-4 into the bolt plate holes 4-1-3 of eight bolt plates 4-1-2 of the lower-layer well-shaped heat-insulating clamping grid 4-1 and the heat-insulating lateral top frame 4-3 and eight through round holes II 4-3-3 respectively in sequence, extending out of the bolt plate holes 4-1-3 of the eight bolt plates 4-1-2 of the upper-layer well-shaped heat-insulating clamping grid 4-1, and being in threaded connection with eight bolt caps 4-5, wherein the end plate 4-4-2 of each bolt 4-4, each bolt plate 4-1-2 of the lower-layer well-shaped heat-insulating clamping grid 4-1 and each bottom surface square boss II 4-3-1 of the heat-insulating lateral top frame 4-3 are in close surface contact with each other from bottom to top in sequence, each top surface square boss II 4-3-1 of the heat insulation lateral top frame 4-3, each bolt plate 4-1-2 of the upper layer well-shaped heat insulation clamping grid 4-1 and each bolt cap 4-5 are sequentially in close surface-to-surface contact from bottom to top; the heat-insulating side top frame 4-3 positioned at the periphery of the cylindrical sample I8A gives enough clamping force to the cylindrical sample I8A in the horizontal plane;

thirdly, respectively plugging a short filling strip 4-7-1 into four strip-shaped gap areas formed among eight bolt plates 4-1-2 of a lower-layer well-shaped heat-insulation clamping grid 4-1 below a heat-insulation lateral top frame 4-3, respectively plugging a short filling corner block 4-7-2 into four corner-shaped gap areas formed among the eight bolt plates 4-1-2, wherein the bottom surfaces of four short filling corner blocks 4-6-3, the bottom surfaces of four short filling corner blocks 4-7-2, the bottom surfaces of eight end plates 4-4-2 and the lower surface of a heat-insulation layer 4-1-4 wrapped outside the lower-layer well-shaped heat-insulation clamping grid 4-1 are positioned on the same plane;

S4, back fire surface heat preservation selection: selecting whether to adopt an adiabatic boundary condition on the non-heating surface of the sample to be detected, wherein S4A is to use an adiabatic cover 5, namely to simulate the adiabatic boundary condition on the non-heating surface of the sample to be detected, and S4B is to not use the adiabatic cover 5, namely to simulate the natural convection boundary condition on the non-heating surface of the sample to be detected;

for the test of the samples of the four groups of embodiments, the selection of the heat preservation of the back fire surface is as follows:

S4A, for the cubic sample II 7B, the mounting procedure using the heat insulating cover 5 was as follows:

after the first step to the fourth step of mounting the cube sample ii 7B in S3A are completed, the following mounting steps are performed:

firstly, buckling a heat insulation cover 5 on an upper layer well-shaped heat insulation clamping grid 4-1 of a constraint heat insulation assembly I4A, and enabling the bottom of the heat insulation cover 5 to be concavely embedded with a well-shaped groove 5-5 to be aligned and buckled with the upper layer well-shaped heat insulation clamping grid 4-1, so that four rectangular convex surfaces 5-6 and four square convex surfaces 5-7 are both contacted with the upper surfaces of a cubic sample II 7B and a heat insulation filling block I4-6;

and secondly, respectively fixing one additional thermocouple 6 on a thermocouple fixing through hole I5-1, a thermocouple fixing through hole II 5-2 and a thermocouple fixing through hole III 5-3 of the heat insulation cover 5, enabling the end heads of the three additional thermocouples 6 to be in contact with the upper surface of the cubic sample II 7B, and respectively connecting the three additional thermocouples 6 with the data acquisition module through cable parts 2-4.

For cylindrical sample i 8A, the mounting procedure using the insulating cover 5 was as follows:

after the first step to the fourth step of mounting the cylindrical sample I8A in S3B are completed, the following mounting steps are carried out:

firstly, buckling a heat insulation cover 5 on an upper layer well-shaped heat insulation clamping grid 4-1 of a constraint heat insulation assembly II 4B, and enabling the bottom of the heat insulation cover 5 to be concavely embedded with a well-shaped groove 5-5 to be aligned and buckled with the upper layer well-shaped heat insulation clamping grid 4-1, so that four rectangular convex surfaces 5-6 and four square convex surfaces 5-7 are both contacted with the upper surfaces of a cylindrical sample I8A and a heat insulation top frame 4-3-2;

secondly, respectively fixing one additional thermocouple 6 on a thermocouple fixing through hole I5-1, a thermocouple fixing through hole II 5-2 and a thermocouple fixing through hole III 5-3 of the heat insulation cover 5, so that the ends of the three additional thermocouples 6 are in contact with the upper surface of the cylindrical sample I8A, and the three additional thermocouples 6 are respectively connected with a data acquisition module through cable parts 2-4;

S4B, exposing the upper surface of the cubic sample I7A or the cubic sample III 7C to indoor air except for a region tightly attached to the lower surface of the upper-layer well-shaped heat-insulating clamping grid 4-1;

s5, furnace temperature setting preparation: according to the requirements of test samples of four groups of embodiments, the temperature-time data of the equivalent temperature rise curve to be input into the control and display transmission box 2 or the mobile terminal is determined by calculation, and the concrete preparation steps are as follows:

firstly, determining a target fire resistance limit t = x h and t is more than or equal to 2.00 h;

secondly, selecting a temperature rise curve specified in GB/T9978.1 or a 'slow temperature rise curve', 'hydrocarbon HC temperature rise curve', 'outdoor fire temperature rise curve', 'electric fire temperature rise curve' and 'tunnel fire RABT temperature rise curve' specified in GB/T26784, substituting time T into a corresponding 'temperature-time relation formula', and obtaining a target temperature T;

thirdly, setting an equivalent temperature rise curve according to a target fire resistance limit;

case 1: for the selection of the temperature rise curve specified in GB/T9978.1 or the "slow temperature rise curve" specified in GB/T26784: when T =2.00h, setting the linear temperature rise of the furnace temperature within 0.50h to the target temperature T in the furnace through the control display transmission box 2 or the mobile terminal, and continuously keeping the temperature until T =2.00 h; when T =3.00h, setting 'the furnace temperature linearly rises to the target temperature T in the furnace within 1.00h through the control display transmission box 2 or the mobile terminal, continuously preserving the temperature until T =3.00 h', and handing the temperature to the control module to be executed after the test is started;

case 2: for the selection of "HC temperature increasing curve as hydrocarbon", "outdoor fire temperature increasing curve", "electric fire temperature increasing curve", and "tunnel fire RABT temperature increasing curve" specified in GB/T26784: setting the linear temperature rise of the furnace temperature in 1.00h to the target temperature T in the furnace through the control display transmission box 2 or the mobile terminal, keeping the temperature for T = x hours, and handing over to the control module to execute after the test is started;

s6, selecting a control mode: operating the test process according to the scene determined in S1, wherein S6A is the use of the control and display transmission box 2, and comprises a cubic test sample I7A and a cubic test sample II 7B; S6B is a mobile terminal, and comprises a cubic sample III 7C and a cylindrical sample I8A;

S6A, operation and control test process using the control and display transmission box 2:

firstly, electrifying and starting the electric furnace device through the cable part 2-4 and the control part 2-3;

secondly, inputting a prepared equivalent temperature rise curve in a mode of 'temperature-time' in a control part 2-3 by a key or a touch screen display part 2-2, and setting an alarm threshold value of each additional thermocouple 6 connected with a cable part 2-4;

thirdly, synchronously controlling the test start and the temperature data recording start through the control part 2-3, and observing a real-time temperature-time curve of each additional thermocouple 6 and the furnace chamber thermocouple 3 to be tested, the operation fault condition of each component, the alarm threshold visual prompt condition and the working condition of the wireless communication module through the display part 2-2;

fourthly, controlling the test to be finished or the temperature data to be recorded to be finished through the control part 2-3;

fifthly, the electronic form data recorded by the data acquisition module is copied through the cable parts 2-4 and used for analyzing whether the temperature of the target sample in the designed fire-resistant time reaches the failure criterion, namely whether the temperature can reach the target fire-resistant limit, namely, the effect evaluation is carried out on the fire-resistant protection structure adopted by the test, so that the protection scheme is further optimized. And the electric furnace device is turned off when the power is cut off;

S6B, a control test process using the mobile terminal:

firstly, the electric furnace device is powered on and started through the cable part 2-4 and the control part 2-3, the wireless communication module is started through the control part 2-3, and the working condition of the wireless communication module is observed through the display part 2-2;

secondly, connecting the mobile terminal with a wireless communication module in a wireless communication mode, synchronizing the display time of the mobile terminal with the built-in objective time of a control module of a control and display transmission box 2 by one key, inputting a prepared equivalent heating curve and setting an alarm threshold value of each additional thermocouple 6 connected with a cable part 2-4 according to a 'temperature-time' mode in a control and setting module of the mobile terminal, entering a report generating module, and inputting an engineering name, a time and place, fireproof protection sampling information and fireproof protection current state description to which a sample to be tested belongs on a general information filling page;

step three, synchronously controlling the start of a test and the start of temperature data recording through a control and setting module of the mobile terminal;

fourthly, observing a temperature-time real-time curve of each additional thermocouple 6 and the furnace chamber thermocouple 3 connected with the cable parts 2-4 through a process monitoring module of the mobile terminal, observing the operation fault condition of each component and the wireless connection condition of the mobile terminal and the wireless communication module, visually prompting the condition of an alarm threshold, switching to a typical moment photo display page of a report generation module according to needs, and taking a sample photo and inserting the sample photo into the page;

fifthly, controlling the test completion or the temperature data recording completion through the control and setting module of the mobile terminal, disconnecting the wireless communication connection between the mobile terminal and the wireless communication module, and powering off to close the electric furnace device;

sixthly, switching to a page of a supervision test problem and conclusion page of the report generation module, and filling the test problem and the conclusion to the interface through voice transcription characters or key input;

seventhly, entering a packaging transmission module, merging and converting all pages of the report generation module into a PDF file, converting 'temperature-time' data of the whole process obtained by the process monitoring module into an electronic form, transmitting the PDF file and the electronic form to an electronic mailbox through a wireless network, backing up the data of the fire protection monitoring process for rechecking, and simultaneously transmitting the data to a fire protection construction party receiving supervision and detection for further guiding the purchasing of fire protection materials and the improvement of the construction process;

s7, finishing the whole testing process: and (5) storing and storing the electric furnace device and the mobile terminal.

Claims

1. The utility model provides a component fire protection design and fire prevention supervise use electric furnace device, includes furnace body (1) that rectangle cavity oven (1-1) and square furnace chamber chassis (1-2) constitute, rectangle cavity oven (1-1) is established the heating member and is realized heating in the furnace chamber through interior, its characterized in that: the furnace also comprises a control display transmission box (2), a furnace chamber thermocouple (3), a constraint heat insulation assembly (4), a heat insulation cover (5) and an additional thermocouple (6);

the upper end of the rectangular hollow furnace wall (1-1) is provided with a circle of L-shaped inner cornice (1-3), and the center of the square furnace chamber chassis (1-2) is provided with a fixing hole (1-4);

the control display transmission box (2) is a hollow rectangular box body, a through line hole (2-1) is formed in the center of the upper surface of the control display transmission box (2), a display part (2-2), a control part (2-3) and a cable part (2-4) are respectively arranged on one side panel of the control display transmission box (2), and a control module, a data acquisition module and a wireless communication module are arranged in the control display transmission box (2);

the constraint heat insulation assembly (4) is divided into a constraint heat insulation assembly I (4A) or a constraint heat insulation assembly II (4B);

the constraint heat insulation assembly I (4A) is composed of a well-shaped heat insulation clamping grid (4-1), a heat insulation lateral top block (4-2), a bolt (4-4), a bolt cap (4-5) and a heat insulation filling block I (4-6);

the heat insulation filling block I (4-6) is composed of four high filling bar blocks (4-6-1) and four high filling corner blocks (4-6-2);

two well-shaped heat-insulating clamping grids (4-1) are horizontally arranged at intervals, a heat-insulating lateral ejecting block (4-2) is respectively arranged between eight pairs of bolt plates (4-1-2) which are vertically opposite to each other on the two well-shaped heat-insulating clamping grids (4-1), the ejecting surfaces I (4-2-4) of the two heat-insulating lateral ejecting blocks (4-2) positioned at the head and tail ends of each well-shaped inner rib (4-1-1) of the well-shaped heat-insulating clamping grids (4-1) are aligned,

the screw rods (4-4-1) of the eight bolts (4-4) are respectively inserted into bolt plate holes (4-1-3) of the eight bolt plates (4-1-2) of the lower-layer well-shaped heat-insulating clamping grid (4-1) and penetrating round holes I (4-2-3) of the eight heat-insulating lateral jacking blocks (4-2) in sequence, extend out of the bolt plate holes (4-1-3) of the eight bolt plates (4-1-2) of the upper-layer well-shaped heat-insulating clamping grid (4-1), and are in threaded connection with the eight bolt caps (4-5),

the end plate (4-4-2) of each bolt (4-4), each bolt plate (4-1-2) of the lower-layer well-shaped heat-insulating clamping grid (4-1), the lower square boss I (4-2-1) of each heat-insulating lateral top block (4-2) are sequentially in close surface-to-surface contact from bottom to top, and the upper square boss I (4-2-1) of each heat-insulating lateral top block (4-2), each bolt plate (4-1-2) of the upper-layer well-shaped heat-insulating clamping grid (4-1) and each bolt cap (4-5) are sequentially in close surface-to-surface contact from bottom to top;

a high filling strip block (4-6-1) is respectively plugged into four strip-shaped gap areas formed between the eight heat-insulating lateral top blocks (4-2), a high filling angle block (4-6-2) is respectively plugged into four angular gap areas formed between the eight heat-insulating lateral top blocks (4-2),

the bottom surfaces of the four high filling bar blocks (4-6-1), the bottom surfaces of the four high filling corner blocks (4-6-2), the bottom surfaces of the eight end plates (4-4-2) and the lower surface of the heat insulation layer (4-1-4) wrapped outside the lower layer of the pit-shaped heat insulation clamping grid (4-1) are positioned on the same plane;

the constraint heat insulation assembly II (4B) consists of a well-shaped heat insulation clamping grid (4-1), a heat insulation lateral top frame (4-3), bolts (4-4), bolt caps (4-5) and heat insulation filling blocks II (4-7);

the heat insulation filling block II (4-7) is composed of four short filling strip blocks (4-7-1) and four short filling corner blocks (4-7-2);

two well-shaped heat-insulating clamping grids (4-1) are horizontally arranged at intervals, a heat-insulating lateral top frame (4-3) is arranged between the two well-shaped heat-insulating clamping grids (4-1),

the screw rods (4-4-1) of the eight bolts (4-4) are respectively inserted into bolt plate holes (4-1-3) of the eight bolt plates (4-1-2) of the lower-layer well-shaped heat-insulating clamping grid (4-1) and eight penetrating round holes II (4-3-3) of the heat-insulating lateral top frame (4-3) in sequence, extend out of the bolt plate holes (4-1-3) of the eight bolt plates (4-1-2) of the upper-layer well-shaped heat-insulating clamping grid (4-1), and are in threaded connection with eight bolt caps (4-5),

the end plate (4-4-2) of each bolt (4-4), each bolt plate (4-1-2) of the lower-layer well-shaped heat-insulating clamping grid (4-1), each bottom surface square boss II (4-3-1) of the heat-insulating lateral top frame (4-3) are sequentially in close surface-to-surface contact from bottom to top, each top surface square boss II (4-3-1) of the heat-insulating lateral top frame (4-3), each bolt plate (4-1-2) of the upper-layer well-shaped heat-insulating clamping grid (4-1) and each bolt cap (4-5) are sequentially in close surface-to-surface contact from bottom to top;

respectively plugging a short filling strip block (4-7-1) into four strip-shaped gap areas formed among eight bolt plates (4-1-2) of a lower-layer well-shaped heat insulation clamping grid (4-1) below a heat insulation lateral top frame (4-3), and respectively plugging a short filling corner block (4-7-2) into four angular gap areas formed among the eight bolt plates (4-1-2);

the bottom surfaces of the four short filling bar blocks (4-7-1), the bottom surfaces of the four short filling corner blocks (4-7-2), the bottom surfaces of the eight end plates (4-4-2) and the lower surface of the heat insulation layer (4-1-4) wrapped outside the lower well-shaped heat insulation clamping grid (4-1) are positioned on the same plane;

the furnace body (1) is fixed on the upper surface of the control display transmission box (2) through a square furnace chamber chassis (1-2), and the fixing hole (1-4) is aligned with the wire hole (2-1);

the lower end of the restraint heat insulation component (4) is a restraint heat insulation component I (4A) which is tightly embedded into a circle of L-shaped inner cornice (1-3) at the upper end of the furnace body (1),

the heat insulation cover (5) is buckled on the constraint heat insulation assembly (4) serving as a constraint heat insulation assembly I (4A), the bottom of the heat insulation cover (5) is concavely embedded with a well-shaped groove (5-5) and the constraint heat insulation assembly (4) serves as an upper well-shaped heat insulation clamping grid (4-1) of the constraint heat insulation assembly I (4A) to be aligned and buckled, eight bolt plates (4-1-2) of the upper well-shaped heat insulation clamping grid (4-1) are vertically opposite to eight vertical square through grooves (5-4) of the heat insulation cover (5), a sample edge alignment line (5-8) on the bottom surface of the heat insulation cover (5) is jointed with the inner edges of the top surfaces of the four high-filling strip blocks (4-6-1) and the four high-filling corner blocks (4-6-2),

an additional thermocouple (6) is respectively fixed in a thermocouple fixing through hole I (5-1), a thermocouple fixing through hole II (5-2) and a thermocouple fixing through hole III (5-3) of the heat insulation cover (5);

or the lower end of the constraint heat insulation assembly II (4B) of the constraint heat insulation assembly (4) is tightly embedded into a circle of L-shaped inner cornice (1-3) at the upper end of the furnace body (1);

the heat insulation cover (5) is buckled on the constraint heat insulation assembly (4) which is a constraint heat insulation assembly II (4B), the bottom of the heat insulation cover (5) is concavely embedded with a well-shaped groove (5-5) and the constraint heat insulation assembly (4) is used for aligning and buckling an upper well-shaped heat insulation clamping grid (4-1) of the constraint heat insulation assembly II (4B), eight bolt plates (4-1-2) of the upper well-shaped heat insulation clamping grid (4-1) are vertically opposite to eight vertical square through grooves (5-4) of the heat insulation cover (5), a sample edge alignment line (5-8) on the bottom surface of the heat insulation cover (5) is tangent to a sample hole (4-3-4) of a heat insulation lateral top frame (4-3) along the circumference,

the control module is respectively connected with the heating body, the data acquisition module, the wireless communication module, the display part (2-2), the control part (2-3) and the cable part (2-4), the furnace chamber thermocouple (3) is vertically fixed in a fixing hole (1-4) of a square furnace chamber chassis (1-2) in the furnace body (1) and penetrates through the wire hole (2-1) to be respectively connected with the control module and the data acquisition module, the three additional thermocouples (6) are respectively connected with the data acquisition module through the cable part (2-4), and the wireless communication module is wirelessly connected with the mobile terminal to realize communication.

2. The electric furnace device for member fire protection design and fire supervision as claimed in claim 1, wherein: eight tail ends of four well-shaped inner ribs (4-1-1) of the well-shaped heat insulation clamping grid (4-1) are respectively connected with a bolt plate (4-1-2) which is horizontally placed, the center of each bolt plate (4-1-2) is provided with a through bolt plate hole (4-1-3), and the outer surface of each well-shaped inner rib (4-1-1) is wrapped with a layer of outer wrapping heat insulation layer (4-1-4) with a square cross section.

3. The electric furnace device for member fire protection design and fire supervision as claimed in claim 1, wherein: the heat-insulating top block (4-2-2) of the heat-insulating lateral top block (4-2) is rectangular, a square boss I (4-2-1) is arranged on the upper end face and the lower end face of the heat-insulating lateral top block in a side-by-side mode, a through round hole I (4-2-3) penetrating through the square boss I (4-2-1) and the heat-insulating top block (4-2-2) is arranged on the central connecting line of the two square bosses I (4-2-1), and the vertical face, far away from the square boss I (4-2-1), of the heat-insulating top block (4-2-2) is a top pressing face I (4-2-4).

4. The electric furnace device for member fire protection design and fire supervision as claimed in claim 1, wherein: the heat insulation top frame (4-3-2) of the heat insulation lateral top frame (4-3) is a plane square block, a through sample hole (4-3-4) is arranged at the center of the block, the annular vertical face of the sample hole (4-3-4) is a top pressing face II (4-3-5), eight square bosses II (4-3-1) are arranged at the periphery of the top face of the heat insulation top frame (4-3-2) in a welting and symmetrical mode, a square boss II (4-3-1) is arranged at the position, opposite to each top face square boss II (4-3-1), of the bottom face of the heat insulation top frame (4-3-2), and a connecting line passing through the boss II (4-3-1) and the heat insulation top frame (4-3-2) is arranged on the central connecting line of each top face and vertical square boss II (4-3-1) The through round hole II (4-3-3).