24 results about "Thermal explosion" patented technology

The invention discloses a self-reaction substance drying process safety assessment and classification method based on thermal analysis kinetics. The method comprises the following steps: performing a multi-heating-rate programmed heating test on a self-reaction substance under a closed condition by adopting DSC to obtain an exothermic initial temperature, a peak temperature and a specific exothermic quantity, constructing a thermal decomposition kinetic model based on the obtained data, and solving kinetic parameters such as apparent activation energy and pre-exponential factors; combining an energy conservation equation and a thermal explosion theory, predicting a self-accelerated decomposition temperature SADT under an adiabatic condition TD24 and a given filling and heat dissipation condition, determining a temperature safety threshold value of a drying process according to the SADT, and dividing a working condition safety interval; further introducing three dimensionless safety factors including a temperature safety margin, a time safety margin and a thermal explosion margin, constructing a comprehensive risk index, and carrying out risk grade division on the drying working condition. The method provided by the invention has the advantages of low sample consumption, simple test conditions and standardized calculation process, can quantitatively evaluate the safety drying temperature upper limit of different self-reaction substances and under different process conditions, and provides a reliable basis for drying process design and safety control of the self-reaction substances.

Disclosed is a composition which is applied to products or elements generating heat or having possibility of ignition or explosion during driving, storage and / or maintenance processes. The composition is capable of effectively responding to the heat, ignition, and explosion. For example, the composition is applied to an article comprising a plurality of the products or elements. The composition is capable of responding to abnormal heat generation, explosion, and ignition occurring in any one element or product, and is capable of preventing or minimizing propagation of such heat generation, explosion, and ignition to other adjacent elements or products. The composition also exhibits excellent handleability and storage stability. The present specification may also provide a use of the composition.

The invention provides a horizontal rotary heating device for detecting the thermal burst pulverization rate of limestone. The horizontal rotary heating device comprises a fixed kiln cylinder device, an in-kiln rotary device, an outer kiln cylinder fixed circular sleeve and a device base, the device base comprises a bottom plate I and a side plate I, and a guide rail is arranged on the bottom plate I; the kiln cylinder fixing device is fixedly mounted on the side plate I, and the other end of the kiln cylinder fixing device is open; a movable tray and a movable trolley are mounted on the guide rail; the movable trolley is provided with a bottom plate II and a side plate II, the side plate II is provided with a sealing large bearing, and the other side plate II is provided with an external kiln fixed bearing; the in-kiln rotating device comprises a rotating cylinder, one end of the rotating cylinder is sealed through a circular plate, and a connecting shaft is installed on the circular plate. The circular plate is rotatably installed on the sealing large bearing, and the connecting shaft is rotatably installed on the external kiln fixing bearing. According to the invention, the bursting pulverization characteristics of the limestone with different characteristics can be tested in advance, so that the thermal bursting pulverization performance of the limestone can be accurately evaluated.

The invention discloses a line lightning arrester, and relates to the technical field of power system lightning protection, the line lightning arrester comprises a lightning arrester body, a hinge fixing base and an electric control separation device, the lightning arrester body comprises a first lightning protection unit and a second lightning protection unit which are connected in series, and the bottom end of the first lightning protection unit is hinged to the hinge fixing base; the electric control disconnecting device comprises a thermal explosion disconnector and a leakage current monitoring module, the thermal explosion disconnector is connected with the first lightning protection unit and the second lightning protection unit, and the leakage current monitoring module is used for collecting the leakage current value of the first lightning protection unit in real time; under the condition that the leakage current value of the first lightning protection unit exceeds a preset action current threshold value, the leakage current monitoring module controls the thermal explosion disconnector to trigger a disengagement action, so that the top end of the first lightning protection unit is separated from the second lightning protection unit, and then the first lightning protection unit can rotate towards the ground around the hinged fixed base under the action of self weight; therefore, the first lightning protection unit and the second lightning protection unit are reliably separated, and timely separation of the fault lightning arrester is realized.

The application relates to a device for preparing ceramic blocks by self-propagating high-temperature synthesis, and belongs to the technical field of ceramic preparation. The device comprises a ceramic block limiting device and a detonation-driven flyer device arranged above the ceramic block limiting device; after the explosion of the explosive in the detonation-driven flyer device, a flyer is driven to impact the ceramic block limiting device; the ceramic block limiting device comprises a top cover, a constraint component coaxially sleeved outside the top cover and a base connected with the constraint component; the top cover is provided with a groove capable of closely matching a convex side surface of the base, and an outer edge extending outward is arranged at the groove mouth; the constraint component is limited by the abutment of a stepped surface in the constraint component and an upper end surface of the outer edge; an ignition hole for placing an aluminized agent is arranged on the side surface of the top cover, and a through groove for placing an ignition wire in contact with the aluminized agent is arranged on the side surface of the constraint component. The device realizes omnibearing limitation of ceramic initial blanks, and is favorable for obtaining ceramic blocks with high compactness.

Disclosed in the present specification are a composite and a heat-absorbing device, which are applied to products or devices in an abnormal state or in which the abnormal state is likely to occur, and thus can effectively respond to heat, an ignition and an explosion in the abnormal state. For example, the composite and the heat-absorbing device are applied to articles including a plurality of the products or devices, and thus can respond to abnormal heat generation, an explosion and an ignition occurring in any one device or product, and prevent or minimize propagation of the heat generation, the explosion and the ignition to other adjacent devices or products. The composite and the heat-absorbing device also exhibit excellent handling and storage stability. In addition, the present specification can provide a use of the composite and the heat-absorbing device.

The invention discloses a method for simultaneously obtaining ignition temperature and ignition heat of biomass spontaneous combustion, and belongs to the technical field of biomass characteristic detection. Grinding the original biomass sample, and drying to obtain biomass powder; putting the biomass powder sample into a synchronous thermal analyzer to obtain a TG-DSC curve of non-isothermal combustion; a DSC inflection point method is adopted, and the ignition temperature and ignition heat of the biomass powder at different heating rates are determined through a TG-DSC curve of non-isothermal combustion; and carrying out nonlinear fitting on the ignition temperature and the ignition heat of the biomass powder at different heating rates, and substituting the heating rates into a nonlinear fitting equation to obtain the ignition temperature and the ignition heat of the biomass in a stacking state. According to the method, the biomass characteristics are obtained based on experiments and in combination with the thermal explosion theory, and high accuracy is achieved.

The application discloses a UHPC glazed panel and a preparation method thereof. The structure of the UHPC glazed panel comprises a UHPC base body, a reaction bonding layer and a glaze layer which are sequentially stacked, and the reaction bonding layer is formed by a precursor film through a firing process, and the precursor film is diffused and reacted with raw materials of the UHPC base body and the glaze layer in the firing process. By adopting a unique UHPC base body and glaze formula, the application reduces the firing temperature, and avoids thermal damage to the base body and the risk of "thermal explosion" in the firing process. By setting the precursor film, the application initiates in-situ reaction at the interface through the firing process, generates a dense transition layer, i.e. the reaction bonding layer, which is continuously and gradually changed in composition and structure, perfectly matched in thermal expansion coefficient, and has extremely high bonding strength. The UHPC glazed panel has the advantages of high strength, high durability of the UHPC, and the advantages of wear resistance, corrosion resistance, easy cleaning and strong decoration of the glaze layer.

The present specification provides a composite, a heat-absorbing apparatus, manufacturing methods therefor, and uses of the composite and the like. The composite and the like are applied to products or devices that generate heat or has the possibility of ignition or explosion during operation, storage and / or maintenance, thereby enabling effective response to the heat, ignition and explosion. For example, the composite and the like are applied to an article that includes a plurality of the products or devices, so as to respond to abnormal heat generation, explosion and ignition occurring in any one of the devices or products and prevent or minimize the propagation of the heat generation, explosion and ignition to other adjacent devices or products.

The present specification discloses a composite and a heat-absorbing apparatus, which may be applied to a product or a device in an abnormal state or having the possibility of the abnormal state occurring, so as to effectively respond to heat, ignition, and explosion in the abnormal state. For example, the composite and the heat-absorbing apparatus may be applied to an article comprising a plurality of such products or devices so as to respond to abnormal heat generation, explosion, and ignition occurring in any one of the devices or products, and block or minimize the propagation of such heat generation, explosion, and ignition to the other adjacent devices or products. The composite and the heat-absorbing apparatus also have excellent handleability and storage stability. The present specification may also provide a use of the composite and the heat-absorbing apparatus.

The present specification discloses a composition and a use thereof. The composition may form a low-density layer, sheet or film having excellent delay or prevention characteristics against heat and flames, and excellent flame retardancy. Such a layer, sheet or film may be referred to as a foam sheet. The present specification also discloses the composition or the foam sheet. For example, the composition or the foam sheet is applied to a product formed by integrating a plurality of elements, whereby it is possible to effectively respond to heat or flames generated from the elements while uniformly maintaining the temperature of the product. For example, the composition or the foam sheet is applied to the product, whereby even when abnormal heat generation, explosion, or ignition occurs in one of the plurality of elements, it is possible to prevent or minimize the influence of such heat generation, explosion, or ignition on other adjacent elements.

Disclosed in the present specification are a composite and a heat-absorbing device, which are applied to products or devices in an abnormal state or in which the abnormal state is likely to occur, and thus can effectively respond to heat, an ignition and an explosion in the abnormal state. For example, the composite and the heat-absorbing device are applied to articles including a plurality of the products or devices, and thus can respond to abnormal heat generation, an explosion and an ignition occurring in any one device or product, and prevent or minimize propagation of the heat generation, the explosion and the ignition to other adjacent devices or products. The composite and the heat-absorbing device also exhibit excellent handling and storage stability. In addition, the present specification can provide a use of the composite and the heat-absorbing device.

The utility model discloses a thermal explosion deburring device with stable quality, which belongs to the technical field of thermal explosion deburring, and adopts the technical scheme that the thermal explosion deburring device comprises a protective shell, a buffer mechanism is fixedly connected to the inner side of the protective shell, a working cavity is fixedly connected to the surface of the buffer mechanism, and an air inlet mechanism is fixedly connected to the rear side of the working cavity; a sealing door is rotatably connected to the front side of the protective shell, a placing disc is slidably connected to the inner side of the working cavity, an ignition device is fixedly connected to the right side of the working cavity, and the ignition end of the ignition device penetrates through the buffer mechanism and extends to the inner side of the working cavity; according to the buffer mechanism, through cooperative arrangement of a rubber pad, a sleeve, a buffer spring, a connecting piece, a contact rod and a buffer plate, when shock waves are generated by explosion in the working cavity, the buffer plate can directly bear the impact force of the shock waves, the buffer plate extrudes the connecting piece through the contact rod after being stressed, and then the buffer spring is compressed; the buffer spring absorbs energy of shock waves in the compression process.

The application discloses a method for determining critical moisture content of explosive material, which comprises the following steps: obtaining explosive material with different moisture contents and determining the moisture contents; researching thermal decomposition characteristics and determining a moisture content interval of thermal explosion experiment; obtaining an isothermal delay period of the explosive material with a certain moisture content through the thermal explosion experiment; obtaining isothermal delay periods of the explosive material with different moisture contents; and analyzing the relationship between the isothermal delay period and the moisture content to determine the critical moisture content of the explosive material. The method can be used to obtain the critical moisture content of the explosive material with a certain size, and has more guiding significance for safety engineering application of the explosive.

The present specification discloses compositions and uses thereof. The composition can form a layer having both excellent thermal resistance and flame retardant properties. The invention further discloses application of the composition. For example, the composition is applied to a product formed by integrating a plurality of elements, whereby heat generated by the elements can be effectively treated. Applying the composition to such a product makes it possible to prevent or minimize the effects of such heat, explosion and / or fire on other adjacent elements, for example, even when abnormal heat, explosion or fire occurs in any of the plurality of elements. The composition can also stably exhibit such functions over a long period of time.

The application discloses a calcium-based tar residue composite gasification briquette based on a carbon dioxide capturing process, which comprises the following components in parts by mass: 100 parts of coal powder; 1-10 parts of slaked lime calculated according to calcium oxide; 1-15 parts of coal tar residue; and 1-10 parts of a high molecular binder; the use amount of each raw material is the use amount after moisture is deducted; the mixture is formed and dried by using boiler flue gas, and the preparation is completed while capturing carbon dioxide; the mechanical strength and thermal stability of the gasification briquette are improved due to the combination of the organic high molecular binder and the tar residue; the obtained gasification briquette has high mechanical strength and low production cost, and is not prone to thermal explosion and powdering during gasification, and can meet the requirements of coal gasification on granular raw materials; meanwhile, carbon dioxide capturing and resource utilization are realized during the preparation of the composite gasification briquette, and the disposal of coal tar residue hazardous waste is realized by blending and burning the composite gasification briquette in a pressurized gasification slagging furnace.

The application provides a kind of pellet return utilization method, through the method steps provided by the application, the pellet return is used for fluidized reduction ironmaking raw material, only needs moderate processing, and does not need to be finely ground to the concentrate particle size level required for pelletizing, thereby avoiding excessive wear of equipment, reducing grinding cost.Moreover, when used for fluidized bed reduction ironmaking, the pellet return has high cold and hot strength, good reducibility, and does not produce crystallization water decomposition endotherm and thermal explosion problem, thus having more excellent metallurgical properties than conventional iron ore powder raw material for fluidized bed, can effectively avoid particle pulverization, reduce sticking and loss of flow, and can reduce energy consumption, improve the production stability of fluidized bed.

The present specification discloses a composite material and a heat absorbing device which can be applied to a product or element which is in an abnormal state or is likely to enter the abnormal state, so as to effectively respond to heat, ignition, and explosion in the abnormal state. For example, the composite material and the heat absorbing device can be applied to an article including a plurality of the products or elements, so as to respond to abnormal heat generation, explosion, and ignition that occur in one of the elements or products, and prevent or minimize the propagation of such heat generation, explosion, and ignition to other adjacent elements or products. The composite material and the heat absorbing device also exhibit excellent handling and storage stability. The present specification may also provide the use of the composite material and the heat absorbing device.

A composition of the present application can be applied to a product that generates heat in driving or maintenance processes, thereby being used as a material capable of treating the heat. The composition of the present application can be applied to a product in which a plurality of heat-generating elements is integrated, thereby efficiently treating the heat generated from the elements while maintaining the temperature of the product uniformly. In addition, when the composition is applied to a product, even if abnormal heat generation, explosion or ignition occurs in any one element among a plurality of elements in the product, it is possible to prevent or minimize the effect of such heat generation, explosion, or ignition on other adjacent elements.

Disclosed in the present specification are a composite and a heat-absorbing device, which are applied to products or devices in an abnormal state or in which the abnormal state is likely to occur, and thus can effectively respond to heat, an ignition and an explosion in the abnormal state. For example, the composite and the heat-absorbing device are applied to articles including a plurality of the products or devices, and thus can respond to abnormal heat generation, an explosion and an ignition occurring in any one device or product, and prevent or minimize propagation of the heat generation, the explosion and the ignition to other adjacent devices or products. The composite and the heat-absorbing device also exhibit excellent handling and storage stability. In addition, the present specification can provide a use of the composite and the heat-absorbing device.

The application is a nano-micro-nano multilayer metal composite forming method, which aims at the poor room temperature forming performance of the existing TiAlMg alloy material, the difficulty in processing and manufacturing of complex structure parts, and the difficulty in practicability, and proposes a new preparation method of nano-micro-nano multilayer components. In the preparation process, the thermal explosion reaction and the hydrogenation-dehydrogenation reaction are used to realize the metallurgical bonding of Ti, Al and Mg three elements and the multilayer configuration. The multilayer configuration material has better thermal conductivity with the assistance of titanium and aluminum. The heat dissipation fin prepared by using the material has much higher efficiency than the existing magnesium alloy material, which greatly expands the use field of the material.

This invention discloses an isothermal thermal explosion critical temperature testing system and method for explosives, comprising a temperature control unit, an automatic sample injection unit, a charge unit, an observation unit, a gas detection unit, a pressure detection unit, and a computer. The temperature control unit includes a furnace body with three heating layers, a ceramic insulation layer, and a thermally conductive layer; the heating rate and temperature of the furnace body are controlled by the computer. The automatic sample injection unit includes two motors, a sample injection rod, two clamps, a zirconia ceramic column, a preheating furnace cover, a test furnace cover, a steel wire rope, a support frame, and a sealing ring. The charge unit includes a sample, a cross-shaped fixture, and a clamp. The observation unit includes a camera, an observation platform, a viewing window, and ceramic fiber cotton. The gas detection unit includes a sealing ring, a flame arrestor, an L-shaped pipe, a filter element, a pressure reducing valve, a gas collection bag, and a gas chromatograph. The pressure detection unit includes a pressure sensor and a data acquisition card. The computer is connected to the data acquisition card and has a data processing module installed inside. In use, the explosive sample is placed in the cross-shaped fixture and then placed in the heating furnace. The sample is heated under isothermal conditions, and the critical temperature and gaseous products at which the sample burns are measured.

This specification discloses composite materials and fire extinguishing devices that are applied to products or elements that are in or potentially in an abnormal state and that can effectively respond to said abnormal state. For example, the composite materials, etc., are applied to articles containing multiple such products or elements and can respond to abnormal heat generation, explosions, and ignition occurring in any one of the elements or products, and can prevent or minimize the propagation of such heat generation, explosions, and ignition to adjacent elements or products. The composite materials, etc., also exhibit excellent handling and storage stability. This specification can also provide applications for the composite materials, etc.

Disclosed in the present specification are a composite and a heat-absorbing device, which are applied to products or devices in an abnormal state or in which the abnormal state is likely to occur, and thus can effectively respond to heat, an ignition and an explosion in the abnormal state. For example, the composite and the heat-absorbing device are applied to articles including a plurality of the products or devices, and thus can respond to abnormal heat generation, an explosion and an ignition occurring in any one device or product, and prevent or minimize propagation of the heat generation, the explosion and the ignition to other adjacent devices or products. The composite and the heat-absorbing device also exhibit excellent handling and storage stability. In addition, the present specification can provide a use of the composite and the heat-absorbing device.