CN218601204U

CN218601204U - Device for measuring radiation heat flow in fire resistance test

Info

Publication number: CN218601204U
Application number: CN202223008786.0U
Authority: CN
Inventors: 张林志; 张爱萍; 曾绪斌; 赵成刚; 张才
Original assignee: Sichuan Fire Research Institute of Emergency Management Department
Current assignee: Sichuan Fire Research Institute of Emergency Management Department
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-03-10
Anticipated expiration: 2032-11-11

Abstract

The utility model discloses a fire-resistant experimental radiation heat flow measuring device, including water-cooled radiation heat flow sensor, signal processing storage module, electronic display ware, battery, water pump, basin and stainless steel heat insulating box, signal processing storage module passes through the wire and is connected with radiation heat flow sensor and electronic display ware respectively, stainless steel heat insulating box separates into the layer through the division board, and above-mentioned each subassembly is arranged in each layer of stainless steel heat insulating box, water-cooled radiation heat flow sensor passes through the sensor sleeve and installs on the stainless steel support on stainless steel heat insulating box top surface, four universal wheels are installed to stainless steel heat insulating box's bottom surface. The utility model discloses can avoid leading to data acquisition to break off or fail because of abominable operational environment, and can prolong the life of signal processing storage module and electronic display ware, simple installation simultaneously, the portability is good.

Description

Device for measuring radiant heat flow in fire resistance test

Technical Field

The utility model relates to a radiant heat flow meter, in particular to radiant heat flux measuring device for fire-resistant test.

Background

There are three basic ways of heat transfer, heat conduction, heat convection and heat radiation. Under the action of heat radiation, combustible materials can generate combustion reaction to cause fire spread, so that a fire resistance test needs to be carried out on a non-heat-insulation fireproof door, a non-heat-insulation type glazing component, an A0-level marine bulkhead and the like which have the fire-proof separation effect to determine whether the fire resistance of the non-heat-insulation fireproof door, the non-heat-insulation type glazing component, the A0-level marine bulkhead and the like can meet the requirements, and the heat flux is an important parameter for representing the fire resistance of a test piece in the fire resistance test process.

Currently, radiant heat flow meters are commonly used to measure the heat flux of test pieces during fire tests. The universal radiant heat flow meter consists of a radiant heat flow sensor, a signal processing and storing module and an electronic display, and because the radiant heat flow sensor, the signal processing and storing module, the electronic display, a storage battery and other accessories are dispersedly placed, the radiant heat flow sensor, the signal processing and storing module, the electronic display and other accessories are required to be respectively taken to a site during testing, which is slightly troublesome. During the experiment, violent burning among the testing arrangement can form high temperature at non-thermal-insulated test piece back fire face, and produces a large amount of dust and corrosive gas, and the bolometer is in abominable operational environment, and precision electronic equipment such as signal processing storage module, electronic display instrument among the bolometer breaks down easily under abominable operational environment owing to lack good safeguard measure, leads to data acquisition to break down or fail, and life shortens. In addition, the height of the mounting rack of the existing radiation heat flow sensor is inconvenient to adjust, and the use is inconvenient.

Because there are weak, the installation procedure is complicated, portability subalternation shortcoming when current radiant heat flow meter is directly used for fire-resistant test, consequently it is necessary to design a radiant heat flow measuring device for fire-resistant test to overcome above-mentioned defect.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a protection is good, remove simple installation, the good radiant heat flow measuring device for fire-resistant test of portability to prior art's not enough.

The utility model aims at realizing through the following technical scheme:

a fire-resistant test radiation heat flow measuring device comprises a radiation heat flow sensor, a signal processing storage module, an electronic display and a storage battery, wherein the signal processing storage module is respectively connected with the radiation heat flow sensor and the electronic display through leads; the stainless steel heat insulation box is divided into 2-3 layers by partition plates, one side of the stainless steel heat insulation box is provided with a side door, and the signal processing and storing module, the electronic display, the water pump, the water tank and the storage battery are arranged in each layer of the stainless steel heat insulation box; height-adjustable's stainless steel support is installed to the top surface of stainless steel heat insulation box, and water-cooled radiation heat flow sensor passes through sensor sleeve pipe demountable installation on stainless steel support, four universal wheels are installed to the bottom surface of stainless steel heat insulation box.

Furthermore, the stainless steel heat insulation box is divided into 3 layers by using 2 partition plates, the water tank is positioned on the lower layer, the storage battery and the water pump are positioned on the middle layer, and the signal processing and storing module is positioned on the upper layer.

Furthermore, the stainless steel support comprises upright columns, lifting rods and a cross rod, the lower ends of the two upright columns are fixed on the top surface of the stainless steel heat insulation box, the two lifting rods can move up and down and are sleeved in the upright columns and can be fixed at a required height, and the cross rod is fixed at the top ends of the two lifting rods.

Further, the electronic display is arranged in the stainless steel heat insulation box.

Further, the panel of stainless steel thermal-insulated box and stainless steel thermal-insulated box comprises 3 layers, and inlayer and skin are corrosion resistant plate, are rock wool heat insulating mattress between inlayer and the skin.

Further, the stainless steel heat insulation box is provided with a handrail.

Compared with the prior art, the utility model has the following effect:

(1) Because the signal processing and storing module, the water pump, the water tank and the storage battery are all placed in the movable stainless steel heat insulation box, the stainless steel heat insulation box can be pushed to take test equipment to the site at one time during a test, and the portability of the equipment is improved;

(2) Because the water-cooled radiation heat flow sensor is adopted, the signal processing storage module is arranged in the stainless steel heat insulation box, and the electronic display is arranged in the stainless steel heat insulation box, the interruption or failure of data acquisition caused by severe working environment can be avoided, and the service lives of the signal processing storage module and the electronic display can be prolonged;

(3) The water-cooled radiation heat flow sensor is arranged on the stainless steel bracket with adjustable height, so that the installation and fixation operation of the radiation heat flow sensor is simplified, and the operability of the device is enhanced.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a side view of the present invention;

FIG. 3 is a cross-sectional view of a stainless steel heat insulated box body panel;

fig. 4 is a schematic structural diagram of the utility model for fire resistance test.

For ease of viewing, the conductors are not shown in fig. 2.

The mark in the figure is: 1. a water-cooled radiant heat flow sensor; 2. a sensor sleeve; 3. a cooling water inlet pipe; 4. a cooling water outlet pipe; 5. a stainless steel heat insulation box; 6. an electronic display; 7. a column; 8. a lifting rod; 9. a cross bar; 10. a handrail; 11. a universal wheel; 12. a water tank; 13. a knob; 14. a storage battery; 15. a water pump; 16. a water inlet pipe; 17. a partition plate; 18. a signal processing and storing module; 19. a locking buckle; 20. a stainless steel plate; 21. rock wool heat insulation mat; 22. a test piece; 23. a fire resistance test furnace.

Detailed Description

As shown in fig. 1 to 4, the radiation heat flow measuring device for fire resistance test provided in this embodiment includes a water-cooled radiation heat flow sensor 1, a sensor sleeve 2, a cooling water inlet pipe 3, a cooling water outlet pipe 4, a stainless steel heat insulation box 5, an electronic display 6, a stainless steel support, a handrail 10, a universal wheel 11, a water tank 12, a storage battery 14, a water pump 15, a water inlet pipe 16, a partition plate 17, and a signal processing and storing module 18, wherein the water-cooled radiation heat flow sensor 1 is connected with the sensor sleeve 2 made of stainless steel through a screw thread, and the sensor sleeve 2 is detachably fixed on the stainless steel support by a locking buckle 19. The signal processing and storing module 18 is respectively connected with the water-cooled radiation heat flow sensor 1 and the electronic display 6 through wires, and the wires connected with the water-cooled radiation heat flow sensor 1 are connected with the water-cooled radiation heat flow sensor 1 after penetrating through the sensor sleeve 2. The storage battery 14 supplies power to the signal processing and storage module 18, the electronic display 6 and the water pump 15 through (flame retardant) cables.

The stainless steel heat insulation box 5 is divided into 3 layers by two partition plates 17, the water tank 12 is positioned on the lower layer, the storage battery 14 and the water pump 15 are positioned on the middle layer, and the signal processing and storing module 18 is positioned on the upper layer. One side of stainless steel heat-insulating box 5 is equipped with the side door, inlays between the side door all around and the box of stainless steel heat-insulating box 5 and is equipped with the sealing washer, is equipped with knob 13 on the side door, conveniently opens and closes the side door. Before use, the side door is opened, the water tank 12, the storage battery 14, the water pump 15 and the signal processing and storing module 18 are placed in the stainless steel heat insulation box 5, and the water level of the water tank 12 can be observed by opening the side door in a test. Four universal wheels 11 are installed on the bottom surface of the stainless steel heat insulation box 5, and a handrail 10 is arranged on the top surface of the stainless steel heat insulation box 5. During the test, the water pump 15 pumps the cooling water in the water tank 12 through the water inlet pipe 16, the high temperature resistant cooling water inlet pipe 13 provides the cooling water for the water-cooled radiation heat flow sensor 1, and the cooling water flows back to the water tank 12 through the high temperature resistant cooling water outlet pipe 4 after passing through the water-cooled radiation heat flow sensor 1.

The electronic display 6 is arranged in the stainless steel heat insulation box and is placed on the top surface of the stainless steel heat insulation box 5, and the display screen of the electronic display 6 is exposed outside so as to be convenient for observing data. During the test, the display screen of the electronic display 6 is back to the test piece 22, so that the influence of high temperature on the electronic display 6 can be properly reduced. The material of the stainless steel heat insulation box is the same as that of the stainless steel heat insulation box 5.

The stainless steel support is arranged on the top surface of the stainless steel heat insulation box 5 and is composed of stainless steel stand columns 7, lifting rods 8 and a cross rod 9, the lower ends of the two stand columns 7 are fixed on the top surface of the stainless steel heat insulation box 5 through hexagon socket screws, the two lifting rods 8 can be sleeved in the stand columns 7 in a vertically movable mode and can be fixed at required heights (the lifting rods 8 can be adjusted in the range of 0.5 m-2 m in height), and the two ends of the cross rod 9 are fixed to the top ends of the two lifting rods 8. The water-cooled radiation heat flow sensor 1 is detachably arranged on the cross rod 9 through the sensor sleeve 2.

The panel of stainless steel heat insulation box 5 and stainless steel heat insulation box comprises 3 layers, wherein inlayer and skin are corrosion resistant plate 22, and middle one deck is rock wool heat insulation mattress 21, and corrosion resistant plate 22 adopts 304 stainless steel, and its thickness is 0.3mm, and rock wool heat insulation mattress 21's thickness is 10mm.

Before the test begins, the radiation heat flow measuring device is pushed to the front of a fire-resistant test furnace 23 through a handrail 10, the distance between the heat sensing end of the water-cooled radiation heat flow sensor 1 and a test piece 22 meets the distance specified by the fire-resistant test method, the lifting rod 8 is adjusted, the water-cooled radiation heat flow sensor 1 is enabled to be at the proper height, and the included angle between the water-cooled radiation heat flow sensor 1 and the test piece 22 is 90 degrees. The knob 13 is rotated to open the side door of the stainless steel heat insulation box 5, and the water amount in the water tank 12 is checked to ensure that the water level is lower than the middle height of the water tank. The start key on the electronic display 6 is turned on and the battery 14 is checked to ensure that the battery can maintain the proper operation of the device during the fire test. During the test, the real-time test values are displayed by the electronic display 6, and the data are recorded and stored by the signal processing and storing module 18.

The above description is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any modification and replacement based on the technical solution and inventive concept provided by the present invention should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a fire-resistant experimental radiant heat flow measuring device, includes radiant heat flow sensor, signal processing storage module (18), electronic display (6) and battery (14), signal processing storage module (18) are connected with radiant heat flow sensor and electronic display (6) respectively through the wire, radiant heat flow sensor is connected with sensor sleeve (2), its characterized in that: the radiation heat flow sensor is a water-cooled radiation heat flow sensor (1), the fire-resistant test radiation heat flow measuring device further comprises a stainless steel heat insulation box (5), a water pump (15) and a water tank (12), the water-cooled radiation heat flow sensor (1) is provided with cooling water through the water pump (15) and the water tank (12), and the storage battery (14) is electrically connected with the signal processing and storing module (18), the electronic display (6) and the water pump (15);

the stainless steel heat insulation box (5) is divided into 2-3 layers by partition plates (17), one side of the stainless steel heat insulation box (5) is provided with a side door, and a signal processing and storing module (18), an electronic display (6), a water pump (15), a water tank (12) and a storage battery (14) are arranged in each layer of the stainless steel heat insulation box (5);

the top surface of stainless steel heat insulation box (5) is installed height-adjustable's stainless steel support, but water-cooled radiation heat flow sensor (1) is installed on stainless steel support through sensor sleeve pipe (2) demountable installation, four universal wheels (11) are installed to the bottom surface of stainless steel heat insulation box (5).

2. The apparatus of claim 1, wherein: the stainless steel heat insulation box (5) is divided into 3 layers by two partition plates (17), the water tank (12) is positioned on the lower layer, the storage battery (14) and the water pump (15) are positioned on the middle layer, and the signal processing and storing module (18) is positioned on the upper layer.

3. The apparatus of claim 1, wherein: the stainless steel support comprises stand columns (7), lifting rods (8) and a cross rod (9), the lower ends of the two stand columns (7) are fixed on the top surface of the stainless steel heat insulation box (5), the two lifting rods (8) can move up and down and are sleeved in the stand columns (7) and can be fixed at a required height, and the cross rod (9) is fixed at the top ends of the two lifting rods (8).

4. The apparatus of claim 1, wherein: the electronic display (6) is arranged in the stainless steel heat insulation box and is placed on the top surface of the stainless steel heat insulation box (5).

5. The apparatus of claim 4, wherein: the stainless steel heat insulation box (5) and the plates of the stainless steel heat insulation box are composed of 3 layers, the inner layer and the outer layer are stainless steel plates (20), and a rock wool heat insulation pad (21) is arranged between the inner layer and the outer layer.

6. The apparatus of claim 1, wherein: the stainless steel heat insulation box (5) is provided with a handrail (10).