128 results about "Fire test" patented technology

A fire resistant slipsheet in roll form includes a fiber mat having first and second sides and a coating containing expandable graphite, a filler, and a binder. The coating is coated on at least one of the first and second sides of the fiber mat, and a single layer of the slipsheet achieves a Class A rating when tested according to UL 790 and / or ASTM E-108 Standard Test Methods for Fire Tests of Roof Coverings. A fire resistant roofing system and a method for installing a fire resistant roofing system that achieves a Class A rating when tested according to UL 790 and / or ASTM E-108 Standard Test Methods for Fire Tests of Roof Coverings is also provided.

The invention discloses a lithium ion battery fire test cabinet with a self-assembled automatic alarm and fire extinguishment system. The lithium ion battery fire test cabinet with the self-assembled automatic alarm and fire extinguishment system mainly comprises a fire cabinet main body, an automatic alarm system, a battery fixing bracket, a heat source simulation system, a measuring and monitoring system, a fire extinguishing system and a smoke discharging system. By virtue of multi-modulation, the sensitivity and response characteristics of different types of fire detectors (smoke sensing detectors, temperature sensing detectors or integrated smoke and temperature sensing detectors and the like) after the lithium ion battery is fired can be simulated; the lithium ion battery fire test cabinet with the self-assembled automatic alarm and fire extinguishment system is suitable for researching the factors such as the fire extinguishment effects (comprising actual fire extinguishing time and the use amount of fire extinguishing agents and the like) of various gas fire extinguishing agents in lithium ion battery fire, the influence of different fire extinguishing agents on the performance of the lithium ion battery after extinguishing the fire and the like. According to the lithium ion battery fire test cabinet with the self-assembled automatic alarm and fire extinguishment system, a vertical fire extinguishing agent releasing pipeline is self-designed according to a fire cabinet body, so that the fire extinguishing agent can be fully released into a battery cabinet within short time after the battery is fired, thus the fire extinguishing time is greatly shortened, the use amount of the fire extinguishing agent is reduced, the fire extinguishing cost is reduced, and the damage to the lithium ion battery is reduced.

The present disclosure generally pertains to water heating systems capable of detecting for dry fire conditions. A water heating system In accordance with one exemplary embodiment of the present disclosure comprises a controller that determines at least one ambient condition, such as ambient temperature, and that then checks for a dry fire condition based on the ambient condition. For example, the controller may dynamically determine a sampling interval for a dry fire test based on the ambient condition. In another example, the controller may dynamically determine a threshold used for sensing a dry fire condition based on the ambient condition. Various other parameters used for testing for a dry fire condition may be based on the ambient condition in other examples.

A multi-layer flexible hose with at least one vulcanized elastomer layer and an outermost cover layer of a thermoplastic polyurethane strip that is wrapped and thermally fused to form a continuous layer. The wrapping may be helical or longitudinal. The polyurethane includes a high hardness, a softening point at or below the vulcanization temperature, and an intumescent flame retarding additive stable at the vulcanization temperature. The polyurethane cover adheres to the elastomer layer and contributes to the flame resistance required by API 16D or of Lloyd's Register Fire Tests for Flexible Hoses on Offshore Installations OD / 1000 / 499 rev. 1.

The invention provides a pseudo-static testing device for concrete columns after non-peripheral fire exposure and an implementation method thereof. According to the fire exposure of a concrete column, two movable stove walls plus a temporary filling wall built in the middle opening are combined to form a fourth stove wall of a stove of the testing device. The stove is arranged in the body of a reaction frame, and a vertical load application unit is mounted on the bottom of a middle horizontal steel beam to apply vertical load on the concrete column; and a horizontal tension-compression servo loading unit is mounted on a horizontal reaction wall, and can apply pushover load and low-cycle horizontal reversed load on the concrete column specimen. The testing device first carries out a fire test under non-peripheral fire exposure on a loaded concrete column, and then carries out a pseudo-static test after fire extinguishment and cooling, and a data acquisition system is used for acquiring air pressure, temperature, displacement and load at each measuring point. The invention is applicable to the experimental study on the fire resistance and post-fire anti-seismic performance of concrete columns under non-peripheral (such as three-side, two-neighboring-sides and single-side) fire exposure.

A device for measuring the flux received by a specimen in fire test apparatuses has a copper disk or plate of the same dimensions and the same type of surface coating as a typical material specimen, an embedded heating coil and thermocouple, and an insulated sample holder similar to that used for a specimen. The transient response of the embedded thermocouple is measured for several different levels of imposed incident radiation without electrical heating and for several different known levels of electrical heating without any imposed radiation. The principle of Electrical Substitution Radiometry (ESR) is applied, and the transient responses to incident radiation and electrical heating under identical thermal conditions are compared to determine the amount of incident radiation that is actually absorbed by the device while it is being irradiated. The situations are kept thermally identical, thereby insuring that all effects due to heat losses (e.g. convection, radiation and conduction) are exactly the same.

The invention provides a fire smoke flow field tracer method which comprises a fire source analog system, a laser sheet optical system, an image pickup system, a smoke particle analog method and a tracer grain adding method; wherein the fire source analog system adopts a propane gas burner with controllable gas flow rate; smoke particles generated by burning sandalwood are adopted to simulate firesmoke particles; the grain diameter of the tracer grain is 1-5mu m of boron nitride grain; the boron nitride grains are evenly and stably transmitted into a flue gas layer by an air compressor; the method can be widely applied to small-scale and full-scale tests of fire, so as to lead the process of fire test to be safe, controllable and environment-friendly; by adopting the method, the key parameters such as the thickness, the form, the flow field structure and the like of the fire flue gas layer can be obtained, thus having important significance for guiding fire smoke control.

The invention relates to a fire-resistance testing device, in particular to a fire-resistance testing device used for a restrained beam. The invention aims at solving the problem that the existing testing device can not test the fire-resistance performance of the restrained beam. Two sample supporters are longitudinally arranged on the ground surface; two reaction frames are positively arranged on the ground surface at the external side of the two sample supporters; a restraining steel column is vertically arranged on a rolling shaft; a tension-compression sensor is arranged between the reaction frame and the restraining steel column; a furnace body is arranged on the ground surface between the two sample supporters; two anchor rods on a vertical-loading device are transversely arranged at two sides of the furnace body; a jack and a weighing sensor are respectively arranged at the upper part and the lower part of the lower surface of a reaction steel beam; a nozzle is arranged at a sprout; an oil pump is connected with the nozzle; the oil pump is connected with an oil tank; a fan is communicated with the sprout; the furnace body is provided with a flue; the thermocouple is arranged on the furnace body wall; in the invention, the testing device is provided for the fire-resistance test of the restrained beam, and the test requirements required by the test such as temperature increment, boundary constrains, reaction measurement, loading, and the like are met.

The invention discloses a fire test furnace loading device which comprises stand columns located at four corners of a fire test furnace. Beams are connected between the stand columns transversely adjacent respectively. At least one vertical loading beam is vertically connected between the beams. At least one horizontal loading beam is vertically connected between the stand columns longitudinally adjacent. The vertical loading beams and the horizontal loading beams are each provided with sliding blocks facing the fire test furnace. The sliding blocks have freedom degrees allowing the sliding blocks to move in the length direction of the vertical loading beams and the length direction of the horizontal loading beams. Detecting devices used for detecting performance of members, to be detected, in the fire test furnace are arranged at the bottoms of the sliding blocks. As the vertical loading beams, the horizontal loading beams and the sliding blocks capable of moving in the length direction of the vertical loading beams and the length direction of the horizontal loading beams are utilized, the requirements for vertical loads and transverse loads of the loading device can be met individually or together, the result accuracy of fire tests of a building structure is improved, and convenience of test operation is improved.

The invention relates to a fire-resistance testing device, in particular to the fire-resistance testing device used for a restrained column. The fire-resistance testing device can research the fire-resistance performance and destruction form of columns with the ends bearing different constrains in fire and can measure the expansion deformation of the column and the expansion force of the column which is generated when the expansion deformation is restrained during the fire by connecting different supporters at the two ends of the columns. A jack is arranged on a reaction frame top beam; a restrained beam is arranged in a loading reaction frame and is parallel to the reaction frame top beam; the end surfaces at two sides of the restrained beam at the top of the column and vertical columns at two sides of a loading reaction frame have gaps respectively; the reaction frame top beam is connected with the restrained beam at the top of the column by two restraining rods; a furnace body is arranged below the restraining beam at the top of the column; a testing restraining column is arranged in the furnace body. The fire-resistance testing device can exactly simulate different connection structures of beams and columns, can conveniently research the fire-resistance performance and destruction form of the columns with the ends restrained by increasing the temperature of the testing furnace in fire, and provides mass reliable testing data for the structural fire-resistance design and fire-control operation.

The invention provides a testing device for testing the fire resistance of a column support full-scale reinforced concrete two-way slab and an implementation method thereof. The testing device mainly comprises a furnace body, a support column, a counterforce loading device and a data acquisition system, wherein the furnace body is arranged under a reinforced concrete two-way slab; the counterforce loading device is arranged above the reinforced concrete two-way slab; the reinforced concrete two-way slab is arranged on the support column; and the data acquisition system is arranged on the reinforced concrete two-way slab and the furnace body. The testing device can carry out better fire test of the column support full-scale reinforced concrete two-way slab to simulate actual fire to carry out fire-tolerant test, test the fireproof limit of the column support full-scale reinforced concrete two-way slab and carry out research on the working mechanism of the slab in fire; therefore, the testing device provides a basis for structural design based on fire safety.

A lining and a related method for extending the period during which a line leg, such as a pipeline in a fireproofing installation, remains below a critical temperature are described. The lining includes, for example, a binding agent, endothermically degradable fillers and / or other fillers, if applicable. The method includes a wrapped line leg with the lining on both sides for wall feedthroughs and / or above the feedthrough opening for ceiling feedthroughs directly after the bulkheading of a feedthrough opening in a fireproofing installation. The heat removal from or the cooling of a line leg can be supported easily and applied on-site in such a way that even line legs with good thermal conductivity can achieve a high T-rating value in the fire test.

The invention relates to a top vertical shaft natural ventilation tunnel model and a fire test method thereof. The top vertical shaft natural ventilation tunnel model is formed by the connection of tunnel model units, and each tunnel model unit comprises a stable structure body, a top plate, vertical shaft basic structure bodies, vertical shaft inner spacing plates and set spacing plates, wherein the stable structure body is used for stabilizing whole model test equipment, the top plate, the vertical shaft basic structure bodies and the set spacing plates are installed at the top of the stable structure body, the stable structure body is matched with the top plate to form a relative sealed space structure to simulate a tunnel, and the vertical shaft basic structure bodies are used for being assembled to vertical shafts with different heights to achieve ventilation; the set spacing plates are used for changing the spacing of the multiple vertical shaft basic structure bodies, vertical shaft spacing plates are installed in the vertical shaft basic structure bodies, and the width of a vertical shaft can be changed. The top vertical shaft natural ventilation tunnel model and the fire test method thereof have the advantages that the repetitive rate of small size tunnel fire model test can be effectively improved; the influence on the natural smoke exhaust of the vertical shaft can be fully considered when the vertical shaft size parameter changes.

The invention relates to a transformer oil heating device and method for a large fire test. The transformer oil heating device comprises a transformer oil tank, an oil supply pipeline, a fire separation wall, a return oil pipeline, an electric valve, a manual valve, a heating tank, an electric control system, an hot oil pump, and an electric heating tube, wherein the transformer oil tank is filledwith transformer oil and has an open top or a combustion port on the top; the fire separation wall is arranged between the transformer oil tank and the heating tank to prevent the heating tank from burning and exploding when the transformer fuel tank is burned and to adjust the oil supply-oil return circulation balance. After the transformer oil is electrically heated to the predetermined temperature in steps and in stages, the heating system is stopped and the transformer oil tank has a predetermined oil level. The transformer oil heating device has high heating temperature, high speed, excellent safety and reliability, good repeatability, provides powerful technical support for a large oil-immersed transformer fire test, can be used for the study of fire characteristics of large oil-immersed transformers, as well as for the evaluation of large oil-immersed transformer fire-fighting technology.

The invention relates to a test technology of a hydrogen storage pressure vessel and aims to provide the local gas cylinder fire test system with a safety isolation device. The local gas cylinder fire test system comprises the safety isolation device composed of a circular floatable sealing head and a cylindrical steel plate-concrete composite structure; a to-be-measured gas cylinder and a fire test bench are arranged inside the safety isolation device; the fire test bench comprises a bearing frame on an upper layer and a tube box on a bottom layer; quartz fiber cloth is paved between the bearing frame and the tube box; two fuel supply pipes with spray nozzles and a diffusion nozzle taking the quartz fiber cloth as gas fuel are formed in the tube box; combustion areas of the spray nozzles in the two fuel supply pipes are respectively corresponding to a local combustion area and an overall combustion area. The local gas cylinder fire test system provided by the invention has the benefits that the test safety is fully guaranteed, and local fire test and overall fire test can be performed; the remote operations of burner ignition, flame height adjustment, extinguishment, thermocouple data acquisition, video monitoring transmission and the like are realized.

The invention relates to a multifunctional fire test furnace system device which comprises a heating furnace body, a fuel system, an electronic ignition and control system, a combustion control system, an air supply system, a smoke exhaust system, a smoke characteristic test system, a temperature field and radiant heat flux test system, a furnace chamber and flue pressure test system, a pump-type water-spraying fire extinguishing system, an experiment image acquisition system and a loading device. The fire test furnace can carry out multi-angle experiment simulation on building structure system conditions under the high-temperature fire effect, and can study ignition characteristics, fire propagation characteristics and combustion rules of a building structure system as well as smoke flow characteristics, propagation rules and influencing characteristics and rules of the technique of smoke prevention and evacuation on fire propagation; and the research result can provide reliable theoretical analysis, experimental basis and scientific reference for fire protection performance design of various building structures and building systems.

A structural construction panel of the invention has an outer fiber-reinforced polymeric layer, and an inner fiber-reinforced polymeric layer. Thermally insulating foam generally occupies space which is not otherwise occupied between the inner and outer layers. A fire-rated capacity is provided by a fire-rated board, rated to pass at least a 15-minute corner fire test, incorporated as part of the finally-completed panel. Such fire-rated board can be foam-based, or non-foam-based. The fire-rated board product, whether a foam-based product or a non-foam-based product, can be enclosed in the panel between the inner and outer layers. Where the board is non-foam-based, the fire-rated board can be disposed, as part of the panel, as one or both outer surfaces of the panel structure, optionally between studs which protrude from the inner layer.

The invention discloses an automatic electronic lighter production line. The automatic electronic lighter production line comprises a stander and a control device, wherein a transmission line is arranged on the stander; one end of the transmission line is provided with a main material pushing mechanism for automatically transmitting materials during cyclic work; and a lighter transmission station, an automatic fire test station, a machine head clamping station, a machine head pressing station for finished product assembly, a material return mechanism and a final lighter outlet station are provided respectively along the transmission line. By the adoption of automated assembly and fire test, the production efficiency is improved greatly, and the quality of the product is more stable.

The present disclosure provides a fire test system and method for tunnel structure based on real-time fusion of numerical and physical spaces. The fire test system includes: a physical test unit, to perform a holographic fire test on the typical segment components of tunnel structure system in a physical space, to obtain holographic characteristic parameter data of the typical components; a numerical analysis unit, to establish a full-scale numerical model of the tunnel-stratum composite system in a numerical space, to obtain multi-field coupling boundary data of the typical components; and a fusion control unit, to control and adjust a multi-field coupling boundary of the physical space according to the multi-field coupling boundary data, and to update and adjust an input parameter of the numerical space according to the holographic characteristic parameter data.

The invention relates to the technical field of fire tests, and particularly relates to a fire test device and method for a subway turn-back track. The fire test device comprises an uplink tunnel, a downlink tunnel and a turn-back tunnel, and is characterized in that two ends of the turn-back tunnel are respectively connected with the uplink tunnel and the downlink tunnel, both the uplink tunnel and the downlink tunnel are provided with a tunnel fan, and the top part of the inner wall of the turn-back tunnel is provided with multiple groups of jet fans. In allusion to the condition that a train on fire stops in the turn-back tunnel or the uplink tunnel and the downlink tunnel which are adjacent to the turn-back tunnel, the fire test device can guide smoke to flow in a limited area and be discharged timely through controlling the uplink tunnel fan, the downlink tunnel fan and the jet fans, thereby creating a safe path for personnel evacuation in an emergency circumstance.

The invention provides a fire test device and method for a pre-stressed steel strand. A fire environment is simulated through a built-in heating resistance wire of a box-type heating furnace and a deformation elongation value of the steel strand at a high temperature is measured by using a stay wire displacement meter, so that a pre-stress loss curve is obtained by calculation. Because of the requirement for the heat preservation thickness of the box-type heating furnace, measurement cannot be conducted in the box-type heating furnace within the limited measurement scale distance of the pre-stressed steel strand. However, on the basis of the provided measuring scheme, the elongation is measured by using a horizontal rod and a stand column rod which enlarge the space, a measurement clamp, and the stay wire displacement meter. The stress-strain change condition of the pre-stress of the pre-stress steel strand in a fire high-temperature environment can be measured and calculated accurately. The fire test device and method can be applied to the performance research of the pre-stress steel strand at a high temperature.

The invention discloses a method for obtaining the fire heat release rate of a high-altitude tunnel. The method comprises the following steps: establishing a mobile model tunnel fire test platform, and respectively carrying out fire field test on oil pools with the same and different oil pan sizes and fuel volumes at different altitudes; by measuring the mass loss rates of the oil pool at different altitudes, obtaining the combustion efficiency changing along with the altitudes; on the basis of a low-altitude plain area, obtaining the change rule of the basic heat release rate of the low-altitude plain area and the heat release rates of tunnels at different altitudes, and expressing the change rule as a corresponding calculation formula according to the combustion efficiency changing alongwith the altitudes. Through moving the model tunnel fire test platform, fire field test research is carried out at different altitudes; the mass loss rate of an oil pool and the combustion efficiencychanging along with the altitude are measured to obtain each high-altitude fire heat release rate and the relationship between the fire heat release rate and the altitude. The method provides a basisfor tunnel fire design at different altitudes.

The invention relates to the technical field of tunnel fire smoke exhaust, in particular to a multifunctional tunnel fire test platform with connection flues. The test platform comprises a plurality of tunnel models; the tunnel models are communicated through connection channels; a longitudinal ventilation and smoke exhaust system is arranged in each tunnel model and comprises a reducing pipe; one end of each reducing pipe is connected with a main smoke exhaust channel of the corresponding tunnel model, and the other end of each reducing pipe is communicated with an air outlet of a variable-frequency axial-flow air supply fan through a rectifying pipe. A gap between the top of each longitudinal ventilation and smoke exhaust system and the top of the corresponding tunnel model forms a smoke exhaust pipeline; a smoke exhaust air shaft with a smoke exhaust fan is arranged at the top of each smoke exhaust pipeline; an electric smoke exhaust valve is arranged between each longitudinal ventilation and smoke exhaust system and the corresponding smoke exhaust pipeline; a fire source combustion system is used for providing smoke; and a measurement and recording system is used for recording specific data. According to the test platform of the invention, simulation research can be carried out on the plurality of smoke exhaust modes of tunnel fire disasters with the communication flues, and the smoke exhaust effects of the various ventilation and smoke exhaust modes can be conveniently compared with each other.

A controllable compound calefactive structure column heating furnace used for fire test of architecture structure is provided, which comprises furnace body whose lumen is hearth, lower furnace mouth and upper furnace mouth are set on the bottom and top of the furnace body respectively, heater coil is placed on the wall of hearth, at least four smoke vents on the top of the furnace body are distributed around the upper furnace mouth, at least four gas-jets are set around the hearth on the bottom of the furnace body assembled by two or three segments. The controllable compound calefactive method has advantages of electric cooker temperature rising and gas temperature rising and avoid the disadvantages thereof, improves the speed of temperature rising and makes the temperature rising control near to international standard calefactive curve, and near to real fire more, reduces test cost and circumstance pollution greatly.

The invention relates to detection equipment, in particular to lighter fire test detection equipment for a factory. The provided lighter fire test detection equipment for the factory can automaticallydetect and is suitable for factory production detection. The lighter fire test detection equipment for the factory comprises a rack, a workbench, a positioning mechanism, and a manual pressing mechanism; the rack is connected with the workbench; the positioning mechanism is arranged on the workbench; and the manual pressing mechanism is arranged on the rack. According to the lighter fire test detection equipment for the factory, by arranging the positioning mechanism, the manual pressing mechanism, a material pushing mechanism, an automatic pressing mechanism, a transmission mechanism, a reset mechanism and the like, the reset mechanism enables the positioning mechanism to be more stable and facilitates the placement of lighters, the pushing mechanism pushes the lighters to the positioning mechanism, and the automatic pressing mechanism drives the manual pressing mechanism to move to test the fire of the lighters, so that the effect of automatic detection of the fire of the lighters is achieved, a large number of lighters can be detected at a time, and the lighter fire test detection equipment is suitable for lighter production factories.

The invention relates to a prevention and control method for fire high-temperature burst of ultra-high performance concrete. According to the method, mainly, a high-temperature dry heat curing mechanism at 120 DEG C is adopted for curing, compared with high-temperature steam curing, high-temperature hot water curing and high-temperature steam pressure curing which are widely adopted at present, burst of ultra-high performance concrete under the action of high temperature and high stress of fire disasters can be completely restrained, energy consumption is low, and the method is environmentallyfriendly. The actual fire test proves that the prevention and control method for fire high-temperature burst of ultra-high performance concrete can effectively prevent the ultra-high-performance concrete burst in the fire, and has a positive effect on further popularization and application of the ultra-high-performance concrete.

A refractory includes a cement, a binder and a matrix. The matrix comprises both stainless steel fibers and organic fibers. The refractory can be easily cast, without additional steel reinforcement, into large fire wall 16 panels 10 capable of meeting the requirements of testing conducted in accordance with ASTM E-119, Standard Test Methods for Fire Tests of Building Construction and Materials in support of IEEE Std. 979-1994, Guide for Substation Fire Protection. The fire wall 16 assembly withstood the fire endurance test without passage of flame and gases hot enough to ignite cotton waste during a four-hour fire exposure. The assembly also withstood a 45? water stream for five minutes immediately following the four-hour fire exposure period. This is a stringent mechanical requirement, as all fire walls 16 must maintain their integrity before, during and after a fire, per the Universal Building Code=s definition of a true fire wall 16.

The invention discloses a double-hole single-line tunnel transverse channel smoke exhaust type rescue station fire model test system, which comprises a tunnel system, and is characterized in that thetunnel system comprises main tunnel channels and a transverse connecting channel, and the transverse connecting channel is transversely arranged between the two main tunnel channels and is verticallycommunicated with the two main tunnel channels; fire source simulation devices are arranged in the main tunnel channels; a smoke exhaust pipeline is arranged at the top of the transverse connecting channel; and monitoring devices are arranged in the main tunnel channels and the transverse connecting channel. According to the invention, a fire scene in a tunnel can be simulated, the flue gas concentration, the flue gas flow rule, the temperature field and the heat radiation value in the tunnel are observed, monitored and recorded, the accuracy and effectiveness of tunnel fire test research areimproved, modular splicing of the main tunnel channels can be achieved, all the modules with different functions can be repeatedly used according to the requirements of different positions, the manufacturing difficulty is lowered, and the splicing efficiency is improved.