86 results about "Heat responses" patented technology

The invention discloses a rock-soil temperature field rapid solving method suitable for a ground source heat pump system, and the method comprises the steps: firstly building a three-dimensional unsteady-state heat transfer model in consideration of a buried pipe coaxial structure, a porous arrangement form and the characteristics of a multilayer heterogeneous soil body in the ground source heat pump system; then simulating a thermal response process by using the model, constructing a multi-domain coupled thermal conduction augmentation matrix, performing POD on the matrix, extracting a dominant mode function of a temperature field, and constructing a low-dimensional POD-based mode space; and finally, constructing a POD-Galerkin low-order model, simulating a buried pipe group soil temperature field, performing inversion of a heat source function, and outputting stratum thermophysical parameters. According to the method, the calculation efficiency and the simulation precision of the porous coupling and long-period unsteady state heat transfer process are remarkably improved, the problem that traditional finite element and finite difference methods are high in time consumption in porous strong coupling modeling is solved, and rapid prediction of the soil temperature and robust recognition of the heat source function under a complex stratum and a heat exchange structure can be achieved.

The invention relates to an energy efficiency optimization method for a dynamic load of a central air conditioner, which comprises the following steps of: establishing a response relationship among a cold and heat source, a transmission and distribution system and end equipment, identifying a nonlinear decoupling characteristic of a cold and heat response behavior by monitoring operation deflection of each level of equipment under a low-load working condition, and defining and updating a cooling capacity response deviation threshold in real time; on the basis of the cooling capacity response deviation threshold, delay compression control is conducted on response actions of the refrigerant side and the air medium side, and by adjusting the air side response time sequence in advance, dynamic thermodynamic equilibrium is formed between refrigerant transfer delay and air medium response in advance; by establishing the response relationship among the cold and heat source, the transmission and distribution system and the end equipment and introducing a cold capacity response deviation threshold dynamic updating mechanism, nonlinear coupling mismatch in a cold and heat transmission chain can be accurately identified, so that the system is more flexible to operate under low-load and variable-load conditions, frequent start and stop or redundant operation of the cold and heat source is avoided, and the system reliability is improved. And therefore, the overall COP value of the system is remarkably increased, and unit cooling capacity consumption is reduced.

The invention relates to the technical field of numerical control, in particular to an engraving and milling machine machining track control method based on machine vision. Comprising the steps of receiving an operation task instruction, collecting a reflected light intensity matrix and processing thermal field data, and generating a source data packet; obtaining a fusion heat distribution matrix through the homography matrix; based on the friction thermal response coefficient, a physical tool nose contact area is judged, a dynamic feature mask is generated, the dynamic feature mask and the reflected light intensity matrix are operated, and a monitoring area is output; executing end coordinates are output through least square ellipse fitting, and sensor calibration parameters are inversely transformed into tool nose feedback coordinates; and reading interpolation instruction coordinates, calculating a differential vector, and driving a feed shaft motor to execute displacement compensation. According to the method, deep space-time coupling is performed on the physical cut-off characteristic of the infrared spectrum, the high-frequency texture characteristic of the visible light and the kinematics constraint of a numerical control system, so that a real tool nose hot spot and an optical virtual image are distinguished, and the uniqueness and authenticity of track identification are ensured.

The invention discloses a temperature control system and method of a micro-fluidic chip, and relates to the technical field of micro-fluidic temperature control, and the method comprises the following steps: in the manufacturing process of the micro-fluidic chip, embedding topological insulator nanowires into a substrate in a directional arrangement mode to form a pre-locking array, and meanwhile, generating an anisotropic heat conduction network under the continuous action of a sound-magnetic field, a topological vortex invariant is calculated, and a heat conduction weight coefficient is generated; arranging a fluorescent layer on the surface of a micro-reaction cavity of the anisotropic heat conduction network, collecting a fluorescence lifetime attenuation curve in real time, and calculating a transient temperature value and a temperature change rate according to a heat conduction constraint variation model and a heat conduction weight system; nonlinear feed-forward compensation power is calculated according to the transient temperature value and the temperature change rate, feedback compensation power is calculated in combination with a deviation field of the target temperature and the real-time temperature, and a compensation power instruction is generated; according to the method, the thermal pilot frequency domain filtering function is constructed through the compensation power instruction, so that the uniformity and response speed of thermal response are improved.

The invention relates to the technical field of geothermal energy utilization and underground heat exchange, in particular to a medium-deep layer buried pipe heat exchanger seepage thermal response rapid prediction method based on artificial intelligence, and the method comprises the steps: obtaining temperature field snapshot data of a medium-deep layer buried pipe heat exchanger system under different operation conditions; performing orthogonal decomposition on the temperature field snapshot data to obtain main modal characteristics and corresponding amplitudes; the parameters of all the operation conditions serve as input variables, all the main modal features and the corresponding amplitudes serve as output variables, a BP neural network is trained, and an artificial intelligence agent model is constructed; and obtaining parameters of a target operation condition, inputting the parameters into the artificial intelligence agent model, outputting the amplitude of each main mode under the target operation condition, reconstructing a temperature field, and completing rapid prediction of the seepage thermal response of the medium-deep layer buried pipe heat exchanger under the target operation condition. According to the method, the temperature field distribution of the DBHE system under the action of underground water seepage can be quickly predicted.

The invention discloses a cutting machine motor intelligent temperature management method and system based on load prediction, relates to the technical field of cutting machine motor temperature management, and is used for solving the problems of temperature response lag and local overheating under the conditions of complex tracks and load fluctuation. In the operation process of the cutting machine, three-phase stator side current signals of the motor are continuously captured, a current vector input quantity is obtained through coordinate transformation and input into the sliding mode observer to estimate the rotor position and the motor rotating speed, a load trend quantity is generated, combined compensation modulation is carried out, and a compensation value is output to a power output link to dynamically adjust the duty ratio. According to path analysis, marking a hot stacking sensitive path section, calculating a power output change rate and shielding wind flow disturbance intensity, screening out a thermal response to-be-detected section, collecting data through a thermosensitive channel to construct a regional thermal risk index, executing differential air cooling adjustment and power modulation path adjustment, and recording state data in real time; and fine management of the full-working-condition temperature of the motor of the cutting machine is realized.

The application discloses a kind of fresh stewed bird's nest cold chain transport process temperature field monitoring method and system, belong to cold chain monitoring technical field.Through heat inertia pulse test, heat capacity and thermal resistance are obtained, which are respectively taken as node attribute and edge attribute;Optimize sensor distribution based on the principle of random walk entropy minimization;Construct a dynamically updated directed weighted heat propagation path graph;Using sparse deconvolution combined with system impulse response function matrix, separate event excitation and identify abnormal events;Linearize the heat balance inverse problem in the rolling time domain, reconstruct the product temperature sequence and heat flow vector, calculate the equivalent heat damage dose, and generate the solidified causal directed acyclic graph evidence chain.The above scheme integrates heat inertia into the graph model, realizes event and heat response separation, risk quantification and full-process traceability, effectively improves the accuracy and reliability of cold chain temperature monitoring.

The application discloses a kind of composite cemented filling material design method, and the application relates to the technical field of mine filling, comprising the following steps: determining optimization component and its optimization domain, and randomly generating multiple groups of design combinations, preparing filling material and filling to be filled sample to form composite filling body test piece;Sample test body is cured under simulated environment, with the degree of hydration heat reaction as index, dynamically adjust sampling interval and determine multiple sampling time;Coupling monitoring test is carried out using the detection method of pulse velocity and low-frequency dielectric spectrum combination, interface coupling degree parameter is extracted, and cementation coupling degree is calculated, and the termination time is determined based on its change rate;The structural strength at this time is obtained, and the preset strength is used as constraint, the cementation coupling degree maximization and the experimental time minimization are used as optimization goal, the double objective optimization function is set, and the optimal design combination is determined by optimization algorithm, which can significantly reduce engineering risk and prolong the service life of structure.

The utility model discloses a controllable atmosphere Joule thermal reaction device which comprises a support and U-shaped clamps arranged on the two sides of the top face of the support, an adjusting mechanism is arranged on the surfaces of the U-shaped clamps, the distance between the two U-shaped clamps is adjusted through the adjusting mechanism, a clamping mechanism is arranged on the surfaces of the U-shaped clamps, and the clamping mechanism is arranged on the top face of the support. And the conductive resistor and the reaction material are clamped and fixed through the clamping mechanism. The utility model relates to the technical field of functional material preparation. According to the controllable atmosphere Joule thermal reaction device, the gas inlet pipe is introduced to the bottom of the conductive resistor for generating Joule heat, and the sealing box is additionally arranged outside the Joule thermal reactor, so that the aim of controlling the reaction atmosphere is achieved, the atmosphere can directly act on the conductive resistor and a material to be prepared, and the controllable atmosphere Joule thermal reaction device has the advantage of high atmosphere controllability.

The embodiment of the application provides a smoke shielding false alarm intelligent identification system and method, which is applied to the technical field of intelligent fire detection. The method synchronously collects imaging pictures, radiation heat response data and wind field state parameters of a suspected shielding area. Firstly, shielding abnormal areas in the pictures are identified and marked. Then, the motion characteristics of the areas with the change of the wind field and the dynamic process of the change of the heat inertia of the areas are analyzed. The core is to judge whether there is a time sequence lag relationship conforming to the physical law of smoke diffusion between the two, so as to identify whether the shielding object is burning smoke. If the physical mechanism is not met, the alarm is inhibited, so that the real fire smoke and non-fire interference objects such as dust and steam can be effectively distinguished, and the fire false alarm rate in a complex ventilation environment is significantly reduced.

The invention relates to the technical field of numerical control machine tool precision detection, and discloses a numerical control rotary table precision detection method, which comprises the following steps: S1, deploying temperature sensors at thermal response sensitive points of a shaft seat, a transmission pair shell and a driving motor of a numerical control rotary table, and establishing a displacement sensing link between the end part of a main shaft and a rotary table reference part; and S2, controlling and deploying the numerical control rotary table to execute symmetrical measurement tracks of forward rotation, reverse rotation and forward rotation again under the on-load working condition, and generating a distinguishable observation sequence with geometric symmetry constraint. A multi-source sensing link is constructed under the on-load working condition, and a symmetric measurement track is executed, so that in-situ capture of dynamic temperature rise and load fluctuation is realized, high unification of a detection environment and an operation environment is achieved, and real restoration of dynamic performance of a machine tool is realized; the defects that a traditional quasi-static detection result is inconsistent with a machining state, and the reinspection value is low are overcome.

The invention relates to the technical field of energy-saving refrigerators, in particular to an energy-saving refrigerator and an intelligent partition self-adaptive control method. According to the method, the heat response change is adjusted according to the response condition of the temperature in the refrigerator and the food material space proportion condition, and the endogenous heat load is analyzed; the exogenous thermal load is analyzed based on the temperature difference trend and the temperature and humidity level of the external environment in the refrigerator door opening state; dominant factors generating influences are dynamically analyzed, and weight endowing of endogenous and exogenous heat loads is adaptively adjusted, so that operation adjustment for the partitions better meets actual requirements. According to the method, internal and external common heat influence analysis is carried out on the refrigerator partition, the weight is dynamically adjusted according to the dominant influence to obtain the adjustment coefficient, dynamic balance of refrigeration output and thermal load is met, and the control efficiency of a refrigeration system of the refrigeration cabinet is improved.

A leak detection system for a server rack, the leak detection system is disclosed. The leak detection system includes a drip pan configured for placement under one or more liquid-cooled servers of the server rack. The server rack includes a piping system configured to convey cooling fluid through the one or more liquid cooled servers, wherein a surface of the drip pan is coated in a thermally-reactive coating. The leak detection system further includes one or more thermal imaging sensors in proximity to the drip pan, wherein the one or more thermal imaging sensors are configured to detect a change to a thermal output from the drip pan in response to contact of the cooling fluid on the thermally-reactive coating.

The present application relates to the technical field of precision detection of numerical control machine tools, and discloses a numerical control rotary table precision detection method, comprising the following steps: S1, temperature sensors are arranged at heat response sensitive points of an axle seat, a transmission pair shell and a driving motor of a numerical control rotary table, and a displacement sensing link is established between an end of a main shaft and a rotary table reference element; S2, a control device controls the numerical control rotary table to execute a symmetric measurement track of forward rotation, reverse rotation and forward rotation again under a load working condition, so as to generate a distinguishable observation sequence with geometric symmetry constraint. By constructing a multi-source sensing link and executing a symmetric measurement track under a load working condition, in-situ capture of dynamic temperature rise and load fluctuation is realized, high unification of a detection environment and a working environment is achieved, real restoration of dynamic performance of a machine tool is realized, and the deficiencies of inconsistency between a traditional quasi-static detection result and a machining state and low re-inspection value are solved.

The invention discloses a double-sided heat dissipation power semiconductor module with a temperature detection function and a manufacturing method. The double-sided heat dissipation power semiconductor module with the temperature detection function comprises a first heat dissipation bottom plate, a lower DBC substrate, a first semiconductor chip, a temperature detection DBC substrate, a second semiconductor chip, an upper DBC substrate and a second heat dissipation bottom plate which are sequentially stacked from bottom to top, the temperature detection DBC substrate serves as an independent middle functional layer and comprises a second ceramic layer and a temperature sensor completely embedded in a second ceramic layer body, and the temperature detection DBC substrate has the beneficial effects that through the temperature detection DBC substrate serving as the independent middle functional layer, the heat propagation path is shortened to achieve ultrafast heat response; the junction temperatures of the upper chip and the lower chip can be sensed and represented at the same time, the measurement precision is high, the problems of power module temperature monitoring in the aspects of precision, speed and reliability are solved while efficient double-sided heat dissipation is achieved, and the plane layout area of the power chip can be reduced through vertical integration.

The application provides a high-frequency electric shock weeding device energy output dynamic control method and system, relates to the intelligent control technical field, and the method comprises the following steps: according to the temperature rise rate distribution in the thermodynamic response signal, calibrating multiple high-heat response focal points in the energy action area; connecting the high-heat response focal points to construct a dynamic action range boundary, and adjusting the boundary form according to the real-time heat diffusion trend; dividing the action range boundary into several independent energy regulation zones according to the thermodynamic gradient characteristics; generating a partition energy compensation coefficient based on the heat damage degree and energy accumulation state of each regulation zone; differentially adjusting the high-frequency current output according to the partition energy compensation coefficient difference until the thermodynamic response signal meets the global inactivation condition. The application can dynamically adjust the energy output parameters.

The method can include receiving a baseline signal curve, operating a thermal reactor, measuring a signal, optionally determining a state (e.g., state of health) of the thermal reactor, and controlling the thermal reactor based on the signal. The method can include receiving (e.g., determining, measuring, etc.) a resistance-temperature and / or resistance-time curve; operating a thermal reactor comprising resistively heating a porous catalytic element; measuring an electrical signal (e.g., resistance, current, voltage, etc.) of the thermal reactor; optionally inferring a temperature of the thermal reactor based on the electrical signal and the resistance-temperature; and controlling the thermal reactor based on the electrical signal. The system can include one or more of a reaction module (e.g., an electrical coupler or electrode and catalytic element, etc.), inlet and outlet valves, power source, electrical feedthroughs (e.g., leads, supports, etc.), sensors, and computing system (e.g. controller).

The invention discloses an intelligent temperature control adjusting system based on a mobile phone shell mold, and relates to the technical field of injection molding temperature control. The method is used for solving the problems of filling defects and warping caused by uneven temperature of a mold cavity. The method comprises the following steps: acquiring the temperature and heat flux data of a melt front in real time through temperature sensors arranged at a sprue, a runner and the tail end of a cavity and heat flux sensing elements below the wall of the cavity, and generating a thermal integral cloth mapping of the surface layer of the cavity in an injection period; analyzing the heat conduction difference between the thin-wall area and the thick-wall area and the heat loss rate of the complex texture area based on thermal integral cloth mapping, identifying a target area and generating a compensation priority index; analyzing a thermal interference effect by combining a regional space layout and a cooling loop, optimizing heating power distribution and generating a power regulation and control instruction; and in combination with the thermal response characteristics of the film heating units, the pulse width is calculated, the heating unit array is driven, local heating compensation matched with the time sequence is implemented in the filling and pressure maintaining stage, and die cavity temperature balance and forming quality improvement are achieved.

The application discloses a kind of based on temperature control curve's forging heat treatment process optimization method, it is related to data processing technical field, including, based on process task data packet, temperature control performance prediction model is constructed and reverse solution is executed, generates core temperature control reference curve;To core temperature control reference curve executes heat response mapping, obtains furnace temperature control trajectory, and obtains online core tracking control scheme by heat treatment risk timing evaluation;Online core tracking control scheme is executed, process data is recorded synchronously, and combined furnace temperature control trajectory is passed through heat history inversion operation, obtains execution temperature control curve;Based on execution temperature control curve, temperature control performance prediction model is optimized, and obtains process quality evaluation result by performance deviation evaluation.The application is by constructing temperature control performance prediction model and executing reverse solution and feedback optimization, improves the calculation consistency of process parameter design and the quantifiable and iterative optimization ability of result evaluation.

The invention relates to the technical field of machining, in particular to a welding device for electric bicycle frame production and a welding method thereof, and the welding device is matched with automatic and semi-automatic electric arc welding equipment for use and comprises a mounting plate, a clamping plate and a hydraulic cylinder. The welding device comprises a fixing plate, a clamping mechanism, a reset mechanism, a limiting mechanism, a thermal reaction mechanism, a piston mechanism and a mounting base, during welding, the temperature rises, liquid in the thermal reaction mechanism evaporates and expands to push the piston mechanism to stretch out, and when the piston mechanism stretches out, the limiting mechanism relieves limiting on the clamping mechanism; and meanwhile, the reset mechanism pulls the clamping mechanism to be away from the high-temperature position of the pipe fitting frame. By means of the mode that the clamping mechanism is heated to be separated under the action of the thermal reaction mechanism, the problems that when a frame is welded, materials are softened due to the fact that the temperature around a welding point rises, and a pipe fitting frame positioning device cannot change the clamping force according to the material change, and consequently the positioning device extrudes and deforms the frame are solved.

The present application relates to the electric steamer boiling intensity self-adaptive adjustment method based on steam discharge detection, aiming at the problems of error accumulation leading to power response lag, boiling state instability and the like in the existing PID control, a non-error dependent control strategy based on micro broadband piezoelectric sensing array sensing steam flow characteristics and fusion spectrum feature analysis is proposed. Through piezoelectric signal acquisition, filtering and short-time Fourier transform, the dynamic characteristics such as the main frequency energy attenuation rate, the harmonic distortion degree and the fundamental frequency shift are extracted in real time, the heat inertia and the disturbance sensitive analysis model are input, the heat response stage and the disturbance level are output as the control decision basis, the PID integral mechanism is dynamically adjusted and the spectrum prediction feedforward compensation is superimposed, the fine adjustment of the electric steamer heating output is realized. The scheme can effectively suppress error accumulation, improve heating response speed, stabilize boiling intensity, and ensure the robustness and adaptive ability of system operation.

This invention discloses a heat equalization device for the bottom of a pot, belonging to the field of cookware technology. The device includes a contoured cover adapted to the outer contour of the pot's bottom, with numerous through-holes. The cover is fixed to the outer side of the pot's bottom, forming a semi-open heat equalization cavity between it and the pot bottom. This device can effectively block open flames even when the aperture is larger than the static critical flame quenching diameter. Through the synergistic effect of the cavity's back pressure and the flame quenching via the through-holes, combined with radiative heat transfer, flameless combustion heat release, and convective heat transfer, it achieves uniform heating of the pot bottom. This device effectively solves the problem of localized overheating at the pot bottom, reduces food sticking and scorching, and features low thermal inertia and rapid heat response, making it suitable for Chinese stir-frying and deep-frying scenarios.

Device (1) for storing electric energy, comprising a heat reaction chamber (3), an energy storage (4), and a heat exchanger (12) adapted to be heated by the heat reaction chamber (3), where the heat reaction chamber (3) comprises a metal carbonate material mixed with a susceptor material and a metal coil (5), where the energy storage (4) comprises a pressurized gas tank or a porous solid material, and where a valve (7) is arranged between the heat reaction chamber (3) and the energy storage (4), where the device comprises an electromagnetic source (8) connected to the metal coil (5) and adapted to output an alternating electromagnetic field to the metal coil (5), where the metal coil (5) acting as an antenna is adapted to transmit the electromagnetic field to the susceptor material in the heat reaction chamber (3), such that the metal carbonate material is heated to release a carbon dioxide gas.

The present application relates to a kind of launch vehicle aerodynamic heat rapid calculation method, according to different launch vehicle aerodynamic heat calculation state establishes several aerodynamic heat calculation programs, forms aerodynamic heat calculation APP by encapsulating several aerodynamic heat calculation program source code, extract variable parameter in code to operation interface, realize the quick calculation aerodynamic heat by setting interface parameter.For the aerodynamic heat response of different positions of rocket calculation, the APP currently encapsulated code establishes eight programs, such as the program of the point of a layer of non-metallic material calculation, i.e.the aerodynamic heat calculation source code based on MATLAB, above program can basically include all the launch vehicle aerodynamic heat calculation state, subsequent if new calculation state appears, can be increased to aerodynamic heat calculation APP by similar method New program.

The invention relates to a bimodal trigger intelligent diaphragm, a battery, a preparation method and application. The bimodal trigger intelligent diaphragm comprises a base film, and a thermal response layer and an electric response layer which are respectively positioned on two sides of the base film, the thermal response layer is prepared from the following raw materials in percentage by weight: 30 to 50 percent of capsule, 10 to 15 percent of PVDF-HFP and the balance of solvent; the capsule comprises a Wood alloy and a capsule wall wrapping the Wood alloy, the material of the capsule wall is polymethyl methacrylate, and the composition of the Wood alloy is Bi < 50 > Pb < 2. 7 > Sn < 1. 3 > Se < 0.5 > Cd10. The electric response layer is prepared from the following raw material components: 0.2 to 0.5 M of N-(4-sulfonyl butyryl) aniline, 0.6 to 1.5 M of sulfuric acid and 0.05 to 0.2 M of benzene sulfonate; according to the invention, dual protection is realized through thermal response and electrical response, the sensitivity, stability and response speed of thermal protection are effectively improved, and the protection effect is improved.

The utility model relates to the field of heating device discloses a heating structure and heating device. It includes first metal piece and second metal piece, and first metal piece and second metal piece all are connected with electric heating assembly, and first metal piece and second metal piece all contact with heat receiver, the outer wall of first metal piece is equipped with first connecting convex part, and the other side is equipped with second connecting convex part, the outer wall of second metal piece is equipped with first connecting recess, and the other side is equipped with second connecting recess, first connecting convex part is inserted in first connecting recess or second connecting convex part is inserted in second connecting recess, to make first metal piece and second metal piece assemble together. The utility model can pass on heat to heat receiver in time, reduce heat loss, improve heating response speed, be suitable for circular, oval or polygon heat receiver, the double -deck structure of first metal piece and second metal piece junction, form a heat preservation chamber, reduce the loss of heat.

The present application relates to the technical field of endoscope temperature pressure control, and particularly relates to an endoscope temperature pressure control method and system, the method comprising the following steps: preliminarily judging the type of a pressure event; when the type of the pressure event is a fuzzy rate pressure event, analyzing the characteristic change of an endoscope front end image; if the characteristic change of the image does not satisfy a preset change condition, starting active heat response detection; if the characteristic change of the image satisfies the preset change condition or the active heat response detection judges that the endoscope front end contacts a high-heat-conductivity medium, confirming a potential tissue contact event; when the potential tissue contact event is confirmed, not performing an exhaust operation; after receiving a warning signal, reducing the heat output of the endoscope front end or enhancing the heat dissipation capacity of the endoscope front end; when the inhibition period ends or the target body cavity pressure returns to a preset safe pressure range, resuming the execution of pressure and temperature regulation modes. The above can improve the safety of endoscope operation.

The invention discloses a fabricated roof structure and a construction method thereof. The fabricated roof structure comprises end structure frames, cross beams are arranged between the end structure frames, color steel tiles are arranged on the cross beams, a connecting block is arranged on one side of each color steel tile, and protruding blocks are arranged at the two ends of each connecting block correspondingly; the color steel tiles are fixed to the cross beam through connecting pieces, each connecting piece comprises a thermal reaction piece, the two ends of each thermal reaction piece are connected with connecting pieces respectively, one end of each connecting piece is provided with a connecting hole, the two ends of each connecting piece are connected with the protruding blocks at the two ends of the corresponding connecting block through the connecting holes, and the cross beam is located between the connecting pieces and the connecting blocks. In the invention, when the color steel tile is mounted, the color steel tile does not need to be punched, so that the waterproof effect of the color steel tile roof is improved; when the connecting piece is installed, the connecting piece generates large holding force on the cross beam through cooling shrinkage of the thermal reaction piece, the color steel tile and the cross beam are not prone to loosening, the stability and firmness of installation of the color steel tile are improved, and the problem that traditional bolt connection is prone to loosening is solved.

The application provides application of a polyoxyethylene-polyoxypropylene-polyoxyethylene tri-block copolymer in a foam extinguishing agent. The application also provides a foam extinguishing agent, which is a heat-responsive gel foam extinguishing agent based on the polyoxyethylene-polyoxypropylene-polyoxyethylene tri-block copolymer, and has heat response capability and excellent extinguishing performance. The heat-responsive gel foam extinguishing agent provided by the application exhibits good fluidity and foaming performance at normal temperature, and once the temperature reaches the critical gel temperature of the foam solution, the flowing foam rapidly changes into a gel foam in situ, and the stability of the foam is significantly improved. The foam extinguishing agent can be widely used in A and B class fires and other fires. In particular, the foam extinguishing agent forms a high-stable gel foam when extinguishing a fire, and has excellent anti-reignition performance.