CN213688943U

CN213688943U - Hot smoke generating device for hot smoke test

Info

Publication number: CN213688943U
Application number: CN202022175050.7U
Authority: CN
Inventors: 刘轩; 朱靖哲; 张婷婷; 马烨红; 吴斌斌; 王新祥; 王元光; 李明
Original assignee: Guangdong Provincial Academy of Building Research Group Co Ltd
Current assignee: Guangdong Provincial Academy of Building Research Group Co Ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-07-13
Anticipated expiration: 2030-09-28

Abstract

The utility model discloses a hot cigarette generating device is used in test of hot cigarette, it includes the combustor, the smoke generator, the safety cover, movable platform, first manual elevating system, the manual elevating system of second, telescopic machanism and burning layer board, the smoke generator includes the tray of fuming, first manual elevating system and the manual elevating system of second are established respectively on movable platform, the burning layer board is established on first manual elevating system, the upper surface of burning layer board is arranged in to the combustor, telescopic machanism and safety cover are established on the manual elevating system of second, the tray of fuming is established at telescopic machanism's flexible end, the tray of fuming is located the top of combustor, the safety cover is located the top of tray of fuming. The utility model discloses consider the influence that different sources of a fire height stretched the flue gas in the reality scene, make going on that on-the-spot hot cigarette test can be more convenient under the building environment demand of difference.

Description

Hot smoke generating device for hot smoke test

Technical Field

The utility model relates to a hot cigarette generating device is used in hot cigarette test.

Background

When a building fire occurs, a large amount of fire smoke is generated due to incomplete combustion and decomposition of combustible materials, and the fire smoke is the most main cause of casualties. Therefore, before different buildings are put into use formally, on the premise of not damaging the site, the performance of the smoke prevention and exhaust system is evaluated through a site hot smoke test, which is very important work.

Although relevant specifications have set forth requirements with industry standards for specific methods of hot smoke testing. However, the building structure and the smoke prevention and exhaust design are usually complicated and changeable, and the detailed construction and execution method of the existing hot smoke generation system are not mature enough. In addition, the hot smoke test standard AS 4391-1999 promulgated in Australia at an early stage proposes that the specific representation form of some links can be flexibly selected according to the specific building form and acceptance requirements. Later, more hot smoke test system standards are proposed, and in order to be suitable for practical application occasions, a hot smoke test method can be improved according to specific needs.

The hot smoke testing hot smoke generating device for the performance field verification of the existing building fire smoke prevention and exhaust system has the defects of large main body frame, heavy overall weight and inconvenience in movement. In actual field test, the test is often carried out at different positions of a building, and the position of the hot smoke generating device needs to be changed frequently.

The existing hot smoke generating device is mainly placed on the ground. In a real fire scene, the location of the fire source is not limited to the ground, and many fires start from combustible materials with a certain height. A large number of researches are carried out on scholars at home and abroad, and the influence of the height of a fire source from the ground on the flow behavior of a strong flame plume and a weak smoke plume below a ceiling is verified. Therefore, in the previous test, the fire source is singly placed on the ground, the smoke prevention and exhaust performance of a building can not be comprehensively evaluated, and the hot smoke test can be carried out by setting multiple fire source heights according to an actual fire scene so that the test result is more reasonable and credible. The existing smoke generating device is mainly a smoke generating furnace and is used for containing smoke generating materials. Usually, the bottom of the furnace is provided with an opening for supplying air, and the top of the furnace is provided with a longer smoke guide pipe for drawing the generated smoke into the hot plume under the action of buoyancy. The existing smoke generating furnace is arranged on the side of the combustor, is generally heavier and is troublesome to move and use. In order to make the hot smoke test more convenient in operation, the design of the smoke generating device can be improved. The roof guard of the hot smoke generating apparatus is often used as a safeguard to prevent the plume of fire from directly burning the roof of an overlying building for a prolonged period of time. The safety cover of the existing hot smoke generating device is highly fixed, but when aiming at buildings with different sizes of fire sources and different heights, the safety cover needs to have a certain height adjusting function to adapt to different hot smoke testing scenes.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a remove convenient, height-adjustable's hot cigarette generating device is used in hot cigarette test is provided, its influence that different sources of a fire height stretchs the flue gas in considering real scene makes going on that on-the-spot hot cigarette test can be more convenient under the building environment demand of difference.

Solve above-mentioned technical problem, the utility model discloses a technical scheme as follows:

the utility model provides a hot smoke generating device is used in hot cigarette test, its includes combustor, smoke generator and safety cover, its characterized in that: still include movable platform, first manual elevating system, the manual elevating system of second, telescopic machanism and burning layer board, the smoke generator is including the tray of being fuming that is used for holding the material of being fuming, the manual elevating system of first manual elevating system and second establishes respectively on movable platform, the burning layer board is established on first manual elevating system, drive the lift by first manual elevating system, the upper surface of burning layer board is arranged in to the combustor, telescopic machanism and safety cover are established on the manual elevating system of second, drive the lift by the manual elevating system of second, the tray of being fuming is established at telescopic machanism's flexible end, drive horizontal migration by telescopic machanism, the tray of being fuming is located the top of combustor, the safety cover is located the top of tray of being fuming.

Furthermore, first manual elevating system is the same with the manual elevating system structure of second, all includes manual lifter subassembly and two passive lifter subassemblies that set up side by side, and passive lifter subassembly is including fixing the first sleeve pipe on portable platform and the first lifter of cartridge in first sleeve pipe that can slide from top to bottom, and the first lifter of two passive lifter subassemblies is connected through horizontal billet, and the lift end and the billet of manual lifter subassembly are connected.

Furthermore, the bottom of the first lifting rod of the two driven lifting rod assemblies is fixedly provided with a horizontal supporting rod, the outer end of the supporting rod is connected with the top of the first lifting rod of the driven lifting rod assembly through an inclined stay rope, and two sides of the combustion supporting plate are fixedly supported on the supporting rod respectively.

Furthermore, the manual lifting rod assembly comprises a second sleeve fixed on the moving platform, a second lifting rod capable of sliding up and down and inserted into the second sleeve, a hand wheel and a chain, the hand wheel is rotatably arranged in the middle of the second sleeve, a pulley is arranged at the top of the second sleeve, one end of the chain is connected with the hand wheel, and the other end of the chain spans the pulley and is connected with the bottom of the second lifting rod.

Furthermore, the telescopic mechanism is horizontally arranged in the middle of a second lifting rod of the second manual lifting mechanism, and the protective cover is fixed at the top of a first lifting rod of the second manual lifting mechanism.

Furthermore, the top of second lifter is equipped with the tray, is equipped with the recess on the tray, and the billet card is in the recess.

Further, the movable platform comprises a horizontal stainless steel plate and movable casters arranged below the stainless steel plate.

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

the utility model discloses designed a remove convenient, fire source smoke source and novel hot cigarette of hot cigarette test emergence system of top safety cover height position adjustable for the first time. Through movable platform and manual elevating system's use, make it can be more extensive, more convenient, safer be applicable to the on-the-spot hot smoke test under the different building scene demands, its concrete manifestation is in:

1. in the hot cigarette test procedure in scene, need place the hot cigarette source in the position of difference usually and test, the utility model discloses a portable supporting platform is used for carrying on hot cigarette generating device, makes things convenient for the removal of hot cigarette source to use in the actual process.

2. In a real building fire scenario, the combustibles are not only confined to the ground but are also usually distributed at a certain height from the ground, and the height of different flame positions has a significant effect on the smoke spread. The utility model relates to a manual elevating system is used for adjusting combustor and smoke generator height, can set up the hot cigarette test of multiple burning things which may cause a fire disaster height according to the high distribution of on-the-spot combustible substance, makes the form of test abundanter, and the result is more reasonable.

3. In the prior smoke generating furnace, a long smoke guide pipe is designed for guiding smoke into a hot plume, and the whole smoke generating furnace is heavy and difficult to move. The utility model relates to a tray of fuming of dress on telescopic machanism, tray of fuming are used for holding the material of fuming, according to the position of hot plume during in-service use, can be with the horizontal flexible regulation of tray of fuming, and the relative position between material of fuming and the combustor lets the better entrainment of flue gas get into in the hot plume.

4. The utility model discloses the safety cover at top can prevent that the fire plume from adjusting the direct firing of top of upper building well. The utility model discloses a position height-adjustable of safety cover consequently can carry out the top protection to the hot cigarette test scene of different sources of a fire size and different building heights.

5. The utility model discloses a can be by combination bolt connection between each component, like this when reserving there are many bolt holes, can design some links of hot cigarette test according to actual building scene is nimble.

Drawings

FIG. 1 is a schematic structural view of a hot smoke generating device according to the present invention;

fig. 2 is a schematic structural view of a movable platform of the hot smoke generating device of the present invention;

FIG. 3 is a schematic structural view of a passive lifter assembly of the hot smoke generator of the present invention;

FIG. 4 is a schematic structural view of a manual lifting rod assembly of the hot smoke generating device of the present invention;

fig. 5 is a schematic view of the assembly structure of the smoke generating tray of the hot smoke generating device of the present invention.

The reference numerals in the drawings mean:

1-a movable platform; 2-a passive lifter bar assembly; 3-a manual lifter bar assembly; 4-a burner; 5-a smoking tray; 6-a protective cover; 7-stainless steel plate; 8-movable caster wheels; 9-bolt holes; 10-a first sleeve; 11-a first base; 12-a steel strip; 13-connecting bolts; 14-a first lifting bar; 15-support rods; 16-diagonal ropes; 17-a second base; 18-a hand wheel; 19-a first triangular bracket; 20-a chain; 21-a locking bolt; 22-a support block; 23-a second lifting rod; 24-a telescoping mechanism; 25-a second triangular bracket; 26-a combustion pallet; 27-second sleeve.

Detailed Description

The present invention will be further described with reference to the following examples.

Referring to fig. 1, the hot smoke generating device for testing hot smoke of the present embodiment includes a movable platform 1, a first manual lifting mechanism, a second manual lifting mechanism, a burner 4, a smoke generator, a heat insulation protective cover 6, a telescopic mechanism 24, and a combustion supporting plate 26, where the left side in fig. 1 is the second manual lifting mechanism, and the right side is the first manual lifting mechanism.

Referring to fig. 2, the movable platform 1 includes a horizontal stainless steel plate 7 and movable casters 8, and the stainless steel plate 7 is required to have high strength for supporting the upper facilities. The movable caster 8 is welded below the stainless steel plate 7, and the movable caster 8 can rotate freely and has a braking function. A plurality of bolt holes 9 are reserved in the stainless steel plate 7 and used for installing various facilities above the stainless steel plate, and the stainless steel plate can be automatically punched according to the requirement of actual size.

The first manual lifting mechanism and the second manual lifting mechanism of the embodiment are correspondingly arranged left and right, have the same structure and comprise a manual lifting rod assembly 3 and two driven lifting rod assemblies 2 arranged side by side.

Referring to fig. 3, the passive lifting rod assembly 2 includes a first sleeve 10 and a first lifting rod 14 which can be inserted into the first sleeve 10 in an up-and-down sliding manner, a first base 11 is welded to the bottom of the first sleeve 10, bolt holes are preset in the first base 11, and the first sleeve 10 is fixed on the upper surface of the movable platform 1 through the first base 11. The tops of the first lifting rods 14 of the two passive lifting rod assemblies 2 are connected through a transverse steel bar 12, the steel bar 12 is connected with the first lifting rods 14 through bolts, and the steel bar 12 can reinforce the stability of the two first lifting rods 14 on one hand and can be used for connecting the manual lifting rod assembly 3 to lift on the other hand. The bottom of the first lifting rod 14 is fixedly provided with a horizontal supporting rod 15, the outer end of the supporting rod 15 is connected with the top of the first lifting rod 14 through a diagonal draw 16, the diagonal draw 16 can enhance the transverse rigidity of the supporting rod 15, and two sides of the combustion supporting plate 26 are respectively and fixedly supported on the supporting rod 15. The bracing piece 15 is L shaped steel, and L shaped steel can rivet through connecting bolt 13 with first lifter 14, and connecting bolt 13 can play the effect of the position of locking first lifter 14 simultaneously, prevents that first lifter 14 from gliding.

More specifically, the side surface of the first sleeve 10 corresponding to the support rod 15 is provided with a vertical notch, and the end of the support rod 15 passes through the notch and extends into the first lifting rod 14, and is fixedly connected with the bottom of the first lifting rod 14, so as to move up and down along with the first lifting rod 14.

When the first manual lifting mechanism and the second manual lifting mechanism need to be lifted, the connecting bolt 13 is firstly loosened, and the first manual lifting mechanism and the second manual lifting mechanism are screwed and fixed after the positions are adjusted.

Referring to fig. 4, the manual lifting rod assembly 3 includes a second sleeve 27, a second lifting rod 23 slidably inserted into the second sleeve 27 up and down, a hand wheel 18 and a chain 20, wherein a second base 17 is welded to the bottom of the second sleeve 27 and fixed to the upper surface of the moving platform 1 through the second base 17. The middle part of the second sleeve 27 is provided with a first triangular support 19, the hand wheel 18 can be rotatably arranged on the first triangular support 19, the top of the second sleeve 27 is provided with a pulley, one end of the chain 20 is connected with the hand wheel 18, and the other end of the chain strides over the pulley and is connected with the bottom of the second lifting rod 23, so that the chain 20 is driven to realize transmission by rotating the hand wheel 18. A locking bolt 21 is further provided on the manual lifter bar assembly 3, and the locking bolt 21 is used to lock the position of the second lifter bar 23.

The top of second lifter 23 is equipped with tray 22, is equipped with the recess on the tray 22, and billet 12 card is in the recess to be connected manual lifter subassembly 3's lift end and billet 12, thereby can drive two passive lifter subassemblies 2 through manual lifter subassembly 3 in step and go up and down.

The protective cover 6 is fixed on the top of the first lifting rod 14 of the second manual lifting mechanism.

Referring to fig. 5, the smoke generator includes tray 5 of fuming, tray 5 of fuming is used for holding the material of fuming such as the smoke cake, the smoke screen bullet, telescopic machanism 24 establishes the middle part at the manual elevating system's of second lifter 23 through second triangular supports 25 level, the telescopic link of telescopic machanism 24 of this embodiment, tray 5 of fuming establishes the flexible end at the telescopic link, drive horizontal migration by telescopic machanism 24, can conveniently adjust tray 5 of fuming to the combustion plume top during the use, thereby it stretches everywhere to make it have great buoyancy lift. The number and the installation height of the smoke generators can be determined according to actual requirements.

The burner 4 is placed on the upper surface of the combustion plate 26, the burner 4 is generally rectangular container-shaped, and two handles are welded on the outer wall. The power of the ignition source generated by the combustion can be estimated from the heat of combustion of the fuel and the mass loss rate of the fuel, and the required power can be obtained by changing the number of burners 4. The burner 4 is usually placed in a water-bearing tray to cool down, so as to prevent the damage of the equipment caused by the overhigh temperature.

The protection measure is mainly a protective cover 6 on the top, and the protective cover 6 is a calcium silicate fireproof plate and is used for preventing the thermal plume of flame with higher temperature from generating long-time direct burning on the top of the building. The height position of the protective cover 6 can be adjusted according to the size of the fire source and the height of the building.

The above embodiments of the present invention are not right the utility model discloses the limited protection scope, the utility model discloses an embodiment is not limited to this, all kinds of basis according to the above-mentioned of the utility model discloses an under the above-mentioned basic technical thought prerequisite of the utility model, right according to ordinary technical knowledge and the conventional means in this field the modification, replacement or the change of other multiple forms that above-mentioned structure made all should fall within the protection scope of the utility model.

Claims

1. The utility model provides a hot smoke generating device is used in hot cigarette test, its includes combustor, smoke generator and safety cover, its characterized in that: the smoke generating device comprises a movable platform, a first manual lifting mechanism, a second manual lifting mechanism, a telescopic mechanism and a combustion supporting plate, the smoke generating device comprises a smoke generating tray used for containing smoke generating materials, the first manual lifting mechanism and the second manual lifting mechanism are respectively arranged on the movable platform, the combustion supporting plate is arranged on the first manual lifting mechanism and is driven to lift by the first manual lifting mechanism, the burner is arranged on the upper surface of the combustion supporting plate, the telescopic mechanism and a protective cover are arranged on the second manual lifting mechanism and are driven to lift by the second manual lifting mechanism, the smoke generating tray is arranged at the telescopic end of the telescopic mechanism, the telescopic mechanism drives the horizontal movement, the smoke generating tray is located above the burner, and the protective cover is located above the smoke generating tray.

2. The hot smoke generating device for testing hot smoke according to claim 1, wherein: the first manual lifting mechanism and the second manual lifting mechanism are identical in structure and comprise manual lifting rod assemblies and two passive lifting rod assemblies arranged side by side, each passive lifting rod assembly comprises a first sleeve fixed on the movable platform and a first lifting rod capable of sliding up and down and inserted into the first sleeve, the first lifting rods of the passive lifting rod assemblies are connected through a transverse steel bar, and the lifting end of each manual lifting rod assembly is connected with the steel bar.

3. The hot smoke generating device for testing hot smoke according to claim 2, wherein: the bottom of the first lifting rod of the two driven lifting rod assemblies is fixedly provided with a horizontal supporting rod, the outer end of the supporting rod is connected with the top of the first lifting rod of the driven lifting rod assemblies through a stay rope, and two sides of the combustion supporting plate are fixedly supported on the supporting rod respectively.

4. The hot smoke generating device for testing hot smoke according to claim 2, wherein: the manual lifting rod assembly comprises a second sleeve fixed on the moving platform, a second lifting rod capable of sliding up and down and inserted into the second sleeve, a hand wheel and a chain, the hand wheel is rotatably arranged in the middle of the second sleeve, a pulley is arranged at the top of the second sleeve, one end of the chain is connected with the hand wheel, and the other end of the chain spans the pulley and is connected with the bottom of the second lifting rod.

5. The hot smoke generating device for testing hot smoke according to claim 4, wherein: the telescopic mechanism is horizontally arranged in the middle of a second lifting rod of the second manual lifting mechanism, and the protective cover is fixed to the top of a first lifting rod of the second manual lifting mechanism.

6. The hot smoke generating device for testing hot smoke according to claim 4, wherein: the top end of the second lifting rod is provided with a supporting block, the supporting block is provided with a groove, and the steel bar is clamped in the groove.

7. The hot smoke generating device for testing hot smoke according to claim 1, wherein: the movable platform comprises a horizontal stainless steel plate and movable casters arranged below the stainless steel plate.