579 results about "Insulation system" patented technology

The invention discloses an electromagnetic heating and heat preservation system for a wind power blade girder plate pultrusion die, and relates to the technical field of thermal field regulation and control, comprising the following steps: activating an electromagnetic coil array to generate an alternating magnetic field, synchronously starting a heat preservation layer device, and triggering a gradient heating mode when the temperature of the die reaches a preset threshold value; a mold temperature field is monitored in real time, the power of an electromagnetic coil and parameters of a heat preservation layer are dynamically adjusted, a target temperature gradient is established, an electromagnetic heating device and a mechanical traction device are linked in the pultrusion process, and heat dissipation control is triggered according to the material flowing state; and after heat dissipation control is completed, the main power source is cut off, the mode is switched to the waste heat recovery mode, mold waste heat is guided into the energy storage device, and the cooling rate is controlled. According to the method, accurate mode switching of electromagnetic heating from uniform temperature rise to gradient heating is achieved through cooperation of magnetic field activation and a gradient triggering mechanism, and the temperature gradient establishment speed and the morphological stability are effectively improved in cooperation with power regulation and control partition differentiation power instruction and thermal insulation layer parameter dynamic matching.

The invention belongs to the technical field of insulation board detection, and particularly relates to an intelligent detection method and device for the bonding area ratio of an insulation board, and the method comprises the steps: collecting an infrared image of an external insulation system of a building external wall, determining a plurality of segmentation thresholds according to local regions with different sizes of pixel points, obtaining a temperature characteristic value according to the size relation between the pixel value of the pixel point and each segmentation threshold value, dividing the infrared image into a plurality of super-pixel blocks according to the pixel value and the temperature characteristic value, and calculating the temperature anomaly degree according to the number of all the super-pixel blocks contained in each heat insulation board and the concentration trend and difference of the pixel value. And determining the bonding strength of the target insulation board according to the position and area ratio of the target sub-block of which the sound velocity is within the sound velocity range of the bonding part and the bonding state is bonded in the target insulation board of which the temperature abnormal degree is greater than a preset threshold value, and judging whether the target insulation board is qualified by combining the vertical height. According to the invention, the accuracy of insulation board quality detection is improved.

The invention belongs to the technical field of submarine cables, and provides a high-voltage three-core submarine cable. Comprising a cable core, a waterproof layer, an inner sheath, an armor layer and an outer sheath, the cable core comprises at least one conductive core, the conductive core comprises a conductor and an insulation system arranged outside the conductor, the insulation system comprises a conductor shielding layer, an insulation layer and an insulation shielding layer, and the conductivity of the conductor shielding layer is gradually reduced from inside to outside in the radial direction of the conductive core; the conductivity of the insulation shielding layer is gradually reduced from outside to inside in the radial direction of the conductive core. The contact interface of the conductor shielding layer and the insulating layer prevents charge from gathering at the interface, and the electric field distribution between the conductor shielding layer and the insulating shielding layer is greatly optimized; similarly, the electric conductivity of the insulation shielding layer is set to be gradually increased in the direction away from the insulation layer, the interface electric field between the insulation layer and the insulation shielding layer is optimized, electric charges on the interface of the insulation layer can be rapidly led to the insulation shielding layer, and the partial discharge phenomenon is prevented.

Disclosed is a physical simulation experiment system for vapor-liquid multiphase seepage in an underground gas storage facility in a depleted gas reservoir, including: a rock sample sealing, heating, and insulation system, a triaxial stress and confining pressure loading system, an oil-gas-water injection and pore pressure supply system, a vapor-liquid-solid three-phase separation and measurement system, an optical micro / nanofiber gas detection and monitoring system, a distributed fiber optic sensing system, and a gas supply and leakage alarm system, where the rock sample sealing, heating, and insulation system is used for accommodating and heating a rock sample; and the oil-gas-water injection and pore pressure supply system performs oil-gas-water injection into the rock sample and pore pressure maintenance. The present application aims to overcome the bottleneck problem of evaluating the dynamic sealing integrity of underground gas storage under alternating loads caused by injection and withdrawal.

The invention belongs to the technical field of ship liquid cargo tanks, and discloses a liquid cargo tank heat insulation system and an installation method thereof. The liquid cargo tank heat insulation system comprises a filling mechanism, a fastening mechanism and a plurality of heat insulation blocks, the multiple heat insulation blocks are sequentially laid on a liquid cargo tank shell, each heat insulation block is in an I shape, a splicing gap between any two adjacent heat insulation blocks is in a shape like a Chinese character'zhong ', the splicing gaps are filled with the filling mechanism, and the fastening mechanism is arranged between the filling mechanism and the heat insulation blocks. A fastening mechanism penetrates through each heat insulation block, the bottoms of the fastening mechanisms are fixedly connected with the liquid cargo tank shell, the tops of the fastening mechanisms extend out of the heat insulation blocks, and the fastening mechanisms are configured to fasten the corresponding heat insulation blocks to the liquid cargo tank shell. According to the liquid cargo tank heat insulation system, the connecting stability of the heat insulation blocks on the liquid cargo tank shell is guaranteed, the heat insulation blocks are prevented from falling off from the liquid cargo tank shell, the filling stability of the filling mechanisms in the splicing gaps is also guaranteed, the filling mechanisms are prevented from falling off, the cost is low, and construction installation and repairing operation are convenient.

The invention provides a well wall heat insulation hollow microsphere and a preparation method thereof. A sealed vacuum cavity is formed in the well wall heat insulation hollow microsphere, a polymer layer is arranged on the surface of the well wall heat insulation hollow microsphere, the polymer layer is provided with cationic groups and anionic groups, and aerogel nano powder is embedded in the polymer layer. The invention also provides a preparation method of the well wall heat insulation hollow microsphere. The well wall heat insulation hollow microspheres have high compressive strength, and the heat conductivity coefficient is reduced; efficient well wall adsorption can be achieved through the synergistic effect of anion groups and cation groups, the defects that a traditional heat insulation material is prone to breaking, fast in heat conduction and ineffective in adsorption under the high-temperature and high-pressure environment of an ultra-deep well are overcome, and the material is suitable for an ultra-deep and ultra-deep oil and gas well drilling fluid system. A multistage pore heat insulation system is constructed through the zwitterionic polymer and the aerogel nano-powder, and a rough surface structure can be provided to assist the microspheres in adsorbing well wall rocks.

The invention belongs to the technical field of power transformer monitoring, and particularly relates to a transformer state comprehensive prediction and evaluation method and system based on decision cascade fusion analysis and a storage medium. Analyzing the concentration of the characteristic gas dissolved in the oil in different operation states according to the oil sample, and calculating the generation rate of the characteristic gas; the concentration of the characteristic gas dissolved in the oil is introduced into various fault diagnosis methods based on analysis of the gas dissolved in the oil according to different decision-making means to evaluate and predict the state of the transformer; and fusing the discharge fault judgment result or the overheating fault judgment result with the concentration ratio of carbon monoxide to carbon dioxide in the oil sample, judging whether an insulation system involved in the transformer state is a pure oil insulation system or an oil paper insulation system, and completing fault classification of the transformer operation state. According to the invention, the operation state of the transformer is accurately predicted.

The invention belongs to insulation of superconducting power equipment, and particularly relates to a breakdown voltage prediction method for a liquid nitrogen, insulation barrier and bubble composite system. Comprising the following steps: acquiring electric field distribution characteristic parameters of the resistance type superconducting current limiter through simulation, and designing an equivalent electrode structure capable of reproducing electric field characteristics in a liquid nitrogen environment; establishing a first breakdown voltage prediction model taking the insulation barrier position parameters and the electrode spacing as variables; calculating the surface heat flux of the superconducting strip in the quench fault state; and introducing a bubble influence factor for correction to obtain a second breakdown voltage prediction model. A complex actual insulation system prediction problem is converted into an equivalent model problem which can be verified in a laboratory. And an accurate basis is provided for the insulation design of the resistance-type superconducting current limiter.

The invention discloses a high-precision voltage regulating system of a power frequency no-partial-discharge test transformer, and the system comprises a heterogeneous multi-stage power module which is formed by connecting an H-bridge unit group and a matrix converter in parallel, the H-bridge unit group outputs a fundamental voltage component, and the matrix converter compensates a high-frequency harmonic component; the multi-physics field digital twinning unit integrates an electromagnetic field solver, a thermodynamic model and a mechanical deformation simulation module and predicts the multi-physics field coupling state of the insulation system in real time; the dynamic impedance matching network comprises an adjustable inductor array and a digital capacitor bank, and automatically adjusts filtering parameters according to a load impedance measurement value; and the control module is used for deploying a deep learning model and is used for optimizing a modulation strategy and a protection threshold on line. According to the method, the voltage regulation precision and the waveform purity can be improved, the stability under the wide-range working condition is guaranteed, the breakdown hidden danger is recognized in advance through multi-physics field coupling simulation, and partial discharge development is restrained from the source.

The utility model discloses an ultra-low energy consumption external thermal insulation system of a VICP composite thermal insulation board thin plaster external wall for a building, which relates to the technical field of external thermal insulation systems of external walls and comprises a waterproof leveling layer, a cementing layer, a double-layer VICP composite thermal insulation board, a single-layer VICP composite thermal insulation board and a protective layer. The double-layer VICP composite insulation boards are adhered to the outer side of the waterproof leveling layer through the cementing layer, a heat bridge breaking anchor bolt is installed between every two adjacent double-layer VICP composite insulation boards of the base layer wall body, the cross section of each double-layer VICP composite insulation board is of a step-shaped structure, and each single-layer VICP composite insulation board is embedded in the step position of every two adjacent double-layer VICP composite insulation boards. The two VICP composite insulation boards are bonded to the outer sides of the heat bridge breaking anchor bolts through adhesives, and the protective layers are fixedly connected to the outer sides of the two VICP composite insulation boards. According to the utility model, the two kinds of VICP composite insulation boards are matched with the thermal bridge breaking anchor bolt, so that the thermal bridge effect caused by an anchor bolt hanging piece is avoided, and the requirements of high insulation property and ultra-low energy consumption are met.

The invention discloses a green and low-carbon constructed wetland thermal insulation system capable of realizing intelligent control. The system comprises a modular wetland unit, a hydroelectric generation module, a thermal insulation heating module, an intelligent control module and an energy storage and standby power supply module, the modularized wetland unit comprises a modularized shell as well as a plant covering layer, a water inlet layer, a wetland bed layer and a water outlet layer which are positioned in the shell and are sequentially arranged from top to bottom; the hydroelectric generation module is mounted on one side of the modularized wetland unit and comprises a water power module shell and a turbine pipeline type hydroelectric generator; electric energy output by the turbine pipeline type hydroelectric generator is supplied to the heat preservation heating module or stored in the energy storage and standby power supply module for standby application; the heat preservation heating module comprises a heat conduction layer arranged at the bottom of the modular shell and located below the water outlet layer, and an electric heating plate located below the heat conduction layer. The intelligent control module is used for analyzing the running state of the wetland in real time and dynamically optimizing the power generation and heating modes. The energy consumption can be reduced, and efficient and stable operation can be achieved.

The invention belongs to the technical field of coal mine fire prevention and extinguishing, and particularly provides a coal mine goaf fire simulation experiment device and method. Comprising an experiment table groove body, a working face channel, an air inlet way, an air return way, a ventilation system, a goaf groove body, a water bath heating and heat preservation system, a goaf temperature simulation system, a distributed temperature acquisition system, a goaf gas environment simulation system and a gas acquisition system. According to the invention, the inclination pitching angle, the coal rock porosity, the goaf ignition position, the internal gas components and the like of the goaf can be simulated according to the actual conditions of different working surfaces of each coal mine, and the evolutionary process of the spontaneous ignition accident of the goaf is realized. According to experimental data, development and change states of internal temperature, gas components and the like of the goaf of each coal mine can be determined, key fire prevention and control areas of the goaf in each period of coal mining are found out, early warning is performed in advance, and life and property safety of underground personnel is guaranteed.

The invention provides a design method of an anti-falling external wall thermal insulation structure, which belongs to the technical field of external wall thermal insulation design, and comprises the following steps: establishing an external wall thermal insulation system pasting index matrix, and quantifying the bonding performance of a material and a base layer; constructing a pasting stability matrix, and representing the influence of the environmental condition on the system stability; executing a simulation experiment, and calculating a stress distribution state; performing entity small test verification to obtain interface parameters; designing an application falling change function, and constructing a dynamic prediction model; calculating a falling probability matrix, and identifying a high-risk area; anchoring point arrangement is optimized, and the optimal position is determined; developing an interface enhancement layer to improve the strain adaptability; an optimal construction matrix is generated, and a complete anti-falling system is formed. Through systematic design and optimization, the technical problems that in the prior art, an external wall heat preservation system is insufficient in long-term stability and prone to falling off are solved, and the long-term stability of the heat preservation system is achieved.

The invention discloses a vacuum insulated panel keel heat preservation system adopting anchoring and bonding connection and a construction method thereof, relates to the technical field of wall body external heat preservation, and solves the problem that the heat preservation performance is reduced due to the fact that a heat bridge effect is easily caused by existence of gaps between panels and steel embedded parts in an existing vacuum insulated panel heat preservation wall body. The connecting structure comprises a plain concrete wallboard, a pre-embedded connecting sleeve assembly, a bonding layer, a vacuum insulated panel, an orthogonal keel unit assembly, a wrap angle connecting assembly and a plastering layer, wherein the plain concrete wallboard is connected with the vacuum insulated panel and the orthogonal keel unit assembly through the pre-embedded connecting sleeve assembly and the bonding layer; the vacuum insulated panel is located in a frame formed by mutual array connection of the orthogonal keel unit assemblies; the wrap angle connecting assemblies are connected to the corners of the orthogonal keel unit assemblies. The plastering layer is located on the outer side of the vacuum heat insulation plate and the orthogonal keel unit assembly. The keel units are made of GFRP materials, gaps between plates are isolated, the heat bridge effect is reduced, and the heat preservation performance of the whole wall is effectively improved.

The invention provides a cold region tunnel portal air curtain heat preservation system utilizing geothermal energy, comprising: a geothermal energy heat extraction device, the geothermal energy heat extraction device comprises a heat extraction drill hole arranged in the middle section surrounding rock of a tunnel and a heat extraction pipe arranged in the heat extraction drill hole, and the heat extraction pipe is internally provided with a heat extraction medium; the arc-shaped air curtain unit is provided with air curtain machines which are uniformly arranged in the circumferential direction of the inner side of the tunnel portal lining; the ground source heat pump is used for providing heat energy for the air heating cavity by taking geothermal energy as a heat source; clean and green geothermal energy and the air curtain technology are combined to achieve long-term prevention of cold damage to the tunnel portal in the cold region, the geothermal energy is transferred to the tunnel portal, a hot air curtain wall is formed at the portal through the air curtain technology, cold energy outside the tunnel is prevented from being transferred into the tunnel, and safety and no influence on driving installation are achieved.

The invention provides a special-shaped conductor polypropylene insulation photoelectric composite cooling power cable, and relates to the technical field of special-shaped cables, the special-shaped conductor polypropylene insulation photoelectric composite cooling power cable comprises three wire cores which are circumferentially and uniformly arranged, each wire core comprises a special-shaped conductor, an insulation layer and a metal shielding layer from inside to outside in sequence, and temperature measurement optical fiber units are arranged in the centers of the inner sides of the three wire cores; a filling area, a buffer layer and a heat dissipation outer protective layer are sequentially coated on the outer sides of the three wire cores; a cooling channel tightly attached to every two adjacent wire cores is arranged between the two adjacent wire cores, and the cooling channel is covered with an inner reflecting cover. Through a special-shaped conductor pressing and splicing technology, the sectional area of the conductor is reduced while the electrical performance is ensured; recyclable polypropylene is adopted to replace a polyethylene insulation system, so that heat resistance, corrosion resistance and high mechanical strength are achieved; through combination of the optical fiber temperature measurement unit and a multi-stage heat dissipation structure with a built-in cooling channel / inner reflection cover / porous buffer layer / graphene protection layer, real-time monitoring and dynamic thermal regulation and control cooperative management of the temperature of the cable are realized.

The invention relates to the technical field of power supply control, and particularly discloses a control method of a high-power isolated power supply, which realizes full-life-cycle intelligent management of an isolated power supply oil paper insulation system by constructing a complete technical chain from dielectric loss factor monitoring to PDIV drift inversion and then to insulation life prediction and operation control. The insulation state on-line monitoring unit collects the key insulation performance index of the dielectric loss factor in real time, the aging degree and the performance change of the oil paper insulation medium in the operation process can be accurately reflected, and compared with a traditional off-line detection method, the real-time performance and the accuracy of monitoring are greatly improved. The operation parameters of the equipment can be dynamically adjusted according to the real-time evaluation result of the insulation state, sudden faults caused by insulation failure are effectively avoided, and the safety and reliability of operation of the equipment are remarkably improved.

The invention relates to the technical field of building seismic isolation, in particular to a seismic isolation system with a vertical stepped quasi-zero stiffness characteristic and a design method of the seismic isolation system. A building three-dimensional seismic isolation system with the vertical stepped quasi-zero stiffness characteristic comprises a horizontal seismic isolation support arranged on the top face of a lower buttress; the positive stiffness system comprises at least one vertical steel spring, and the two ends of the vertical steel spring are connected to the top face of the horizontal shock insulation support and the bottom face of the upper buttress correspondingly. The negative stiffness system comprises a variable-slope guide plate, a horizontal multi-layer annular spring and a supporting plate, the thickness of the variable-slope guide plate changes in the height direction of the variable-slope guide plate, one end of the horizontal multi-layer annular spring abuts against the variable-slope guide plate, the horizontal multi-layer annular spring is connected to the supporting plate, and the supporting plate is connected to the upper buttress; the horizontal multi-layer annular spring can be driven to move along the surface of the variable-slope guide plate by changing the distance between the upper buttress and the lower buttress, and the horizontal multi-layer annular spring moves along the surface of the variable-slope guide plate, so that the length of the horizontal multi-layer annular spring is changed, and then negative stiffness is provided.

An electrical conductor monitoring system for single or multi-phase conductors is described. The monitoring system may be configured to monitor the health of a conduction system based on multi-phase sequences and / or current magnitude and angle vectors of multi-phase or single-phase current. In one example, the monitoring system includes an insulation health monitoring system having an input and output measurement devices, the input measurement device disposed at an input end of the electrical distribution system and structured to measure three-phase input currents, the output measurement device disposed at an output end of the electrical distribution system and structured to measure three-phase output currents; and a monitoring device communicatively coupled to the measurement devices and structured to receive the three-phase input and output currents from the measurement devices and determine a state of the insulation system based on the three-phase input and output currents. Other embodiments are described.

The invention is based on the objective of further improving or better assessing the performance of the vibration isolation system and thus the performance of the machine or device connected to the vibration isolation system. For this purpose, a vibration isolation system is provided by means of which a vibration-isolated load can be supported, comprising at least one vibration isolator, preferably a plurality of vibration isolators, which can counteract vibrations occurring during operation by means of actuators, and at least one sensor, preferably a plurality of sensors, which are configured to record measured values ​​relating to the vibration isolation system and / or the supported load and / or the environment and to provide these as input data to a computer-aided method for a performance analysis of the vibration isolation system and / or the supported load.

The oil return structure and equipment are used for oil return of a motor and / or a gearbox, the motor and the gearbox are each provided with a machine shell and a rotating shaft, an inner oil cavity is formed in each machine shell, each inner oil cavity is provided with a first oil liquid level face, and an oil seal body used for sealing an opening of each inner oil cavity is arranged on each rotating shaft. The oil return structure comprises a negative pressure section and an oil throwing section which are arranged on the rotating shaft, an oil throwing structure which is arranged on the machine shell and corresponds to the oil throwing section, and a negative pressure structure which is arranged on the machine shell and corresponds to the negative pressure section. The scheme can effectively solve the problems of insufficient cooling caused by oil seal abrasion and oil leakage of the oil-cooled motor and damage to an insulation system caused by oil entering the motor due to oil leakage when the motor is matched with a gearbox, and improves the service life and stability of the motor.

The invention relates to the technical field of electrical digital data processing, and provides a high-voltage cable semi-conductive shielding layer surface defect evaluation method, which comprises the following steps: S1, obtaining shielding layer surface defect morphology characteristics; s2, constructing a finite element model based on defect morphology features, and executing analogue simulation calculation; s3, constructing a standardized response mapping data set based on an analogue simulation calculation result; s4, on the basis of the standardized response mapping data set, constructing a neural network model and executing iterative training; s5, performing finite element simulation based on the geometric shape of the defect contour so as to verify the accuracy of the neural network model; according to the invention, high-flux prediction of electric field distortion caused by surface defects of the semi-conductive shielding layer of the target cable can be realized so as to evaluate the influence on an insulation system. Moreover, the prediction and evaluation speed of the method is far higher than that of traditional simulation, and the method can also show higher precision for untrained defect prediction.

The invention belongs to the technical field of ring main units, and discloses a ring main unit based on dry air insulation and intelligent monitoring. The ring main unit is provided with a cable chamber working bin, a numerical control monitoring mechanism and a protection mechanism, the numerical control monitoring mechanism is provided with a control chamber and a real-time monitoring assembly, the real-time monitoring assembly comprises a monitoring host and a conduction wire, and the monitoring host is used for monitoring working state parameters of a switch chamber in real time through the conduction wire; the protection mechanism is provided with a mechanism chamber and the switch chamber, and the switch chamber is filled with positive-pressure dry air and is provided with an epoxy resin composite insulator. Based on the above structure, a dual insulation system of dry air insulation and epoxy resin composite insulators is adopted, a basic monitoring architecture capable of sensing the state of a switch room in real time is constructed while environmental protection is realized to replace SF6, and the problems of environmental protection defects and state monitoring deficiency of a traditional gas insulation ring main unit are solved.

The invention relates to a preparation and construction process of a cast-in-situ solid waste-based UHPC-foamed ceramic composite board, which is characterized in that low-grade potassium feldspar tailings are subjected to acid pickling activation and plasma-assisted microwave treatment, and are combined with high-efficiency compounding of solid waste-based raw materials, so that the matrix activity and the interface bonding force are remarkably improved; a quaternary hybrid toughening system is introduced, so that the mechanical property and the crack resistance durability of the material are comprehensively improved. A green preparation process is adopted for the foamed ceramic, the pore structure is optimized through plasma pretreatment and gradient temperature control sintering, high heat preservation and structural stability are both considered, energy consumption is reduced, and meanwhile the collapse risk of a traditional process is avoided. The interlayer bonding strength and thickness uniformity of the cast-in-place solid waste-based UHPC-foamed ceramic composite board are ensured, and the problems of hollowing, stripping and the like are solved. According to the technical scheme, high-value utilization of solid waste is taken as a core, environmental protection and economical efficiency are achieved, a traditional organic heat preservation system can be replaced, a high-strength, durable and integrated solution is provided for wall heat preservation buildings, and upgrading of the green building material industry is promoted.

The invention discloses a graphite purification furnace based on a gradient flow-equalizing gas permeation structure and a gas distribution method thereof, belongs to the technical field of high-purity material preparation, and aims to solve the problem of inconsistent product purification degree caused by non-uniform gas flow distribution in a traditional purification furnace. The core is that an annular gas flow equalizing cavity filled with a graphite soft felt is constructed in a heat insulation layer, and gas realizes pressure equalization and preheating in the cavity; micropores distributed in a gradient mode are formed in the inner-layer heat insulation hard felt to serve as a seepage face, natural convection is resisted through the distribution strategy that the upper portion is dense and the lower portion is sparse, and uniform and low-speed seepage of gas from the periphery to the center is achieved. The device also supports partitioned gas inlet and can cooperate with a heating system to realize fine regulation and control of a temperature-atmosphere field in the furnace, and the scheme can significantly improve the product purification uniformity, the gas utilization rate and the process flexibility, and is compact and reliable in structure.

An inner-insulation enhanced insulator is applied to the lead wire of a high-voltage control device, and includes mounting flanges installed at the upper and lower ends of an insulation support system, and an outer insulation system located outside the insulation support system. An inner insulation system is arranged inside the insulation support system; the inner insulation system includes an inner skin insulation layer, and spiral umbrella skirts are arranged on the inner skin insulation layer; the edge of the inner spiral umbrella skirt of the spiral umbrella skirt is higher than the root of the inner spiral umbrella skirt and is arc-connected; the present invention adopts an inner spiral enhanced umbrella skirt, which increases the creepage distance along the surface of the inner surface of the insulator. The edge of the inner spiral umbrella skirt is higher than the root and is arc-connected, which is convenient for placing the control lead wire and can increase the creepage distance of the control lead wire in the inner spiral umbrella skirt. Therefore, the height of the inner-insulation enhanced insulator can be optimized, the purpose of saving materials and costs can be achieved, and the exposure of the control lead wire can be avoided, preventing aging and damage.

This invention discloses a method and system for predicting the dissolution time of bubbles in oil-paper insulation, belonging to the field of electrical equipment insulation technology. The method includes: calculating the amount of various gases dissolved per unit volume of oil after the gas dissolution in oil reaches equilibrium; using 47℃ as a reference temperature, extrapolating this data to other temperatures and solubilities using the Arrhenius relation, and calculating the diffusion coefficients of various gases in oil at each temperature; calculating the diffusion coefficients of various gases in paper at each temperature; establishing a prediction model for the dissolution time of bubbles in oil-paper insulation, and calculating the dissolution time. This invention considers three factors—gas solubility in oil, diffusion coefficient in oil, and diffusion coefficient in paper—that vary with temperature and gas type, and calculates the dissolution time of a single stationary bubble in oil-paper insulation. This effectively reduces the risk of bubbles during transformer operation and can be widely applied to oil-paper insulation systems with the same kinetic description.

The invention relates to an insulation anchor (1) for attaching a component to an insulation system. The insulation anchor (1) comprises a base body (6) with a screw channel (7) and, at the rear end of the base body (6), a flange (9) projecting radially outwards beyond the base body (6) in relation to a longitudinal axis (8) of the insulation anchor (1). A screw can be screwed into the insulation anchor (1) via the screw channel (7), thereby attaching the component to the insulation anchor (1). Furthermore, at least one recess (13) is provided in the flange (9), which locally reduces the thickness (12) of the flange (9) measured in the direction of the longitudinal axis (8). The flange recess (13) has a diameter (14) that is smaller than the diameter (15) of the screw channel (7), so that a screw can be screwed into the flange recess (13) when the screw channel (7) is not in the area of ​​a mounting opening of the attachment.

The invention relates to a method and equipment for testing radiant heat and humidity weather resistance of a building external wall thermal insulation system, and belongs to the technical field of radiant heat and humidity weather resistance tests of building external wall thermal insulation systems. Comprising a box body, a radiation device, a temperature adjusting device, a humidity adjusting device, a spraying device, an air humidity sensor, an air temperature sensor and a control system, the device introduces a radiation source for simulating the sun, is more suitable for the external environment used for building external wall heat insulation, can consider the influence of radiation on the building external wall heat insulation system, and increases the test state of the building external wall heat insulation system under the hot and humid conditions.

A system for insulating a curtain wall structure is disclosed. The system includes a plurality of insulation hangers, curtain wall insulation, and safety insulation. The insulation hangers include a reinforcing member that engages a horizontal transom of the curtain wall structure. The system is attached only to the horizontal transoms of the curtain wall structure via the insulation hangers to facilitate installation and / or improve reliability.