1140 results about "Pipe insulation" patented technology

A travel mug has an outer case, an inner case, a film heater, a temperature control device, and a power source connector. The inner case is fitted into the outer case in conjunction with a spacer, thereby resulting in formation of an air space insulation between the inner case and the outer case. The film heater is fastened to the bottom end of the inner case and is connected to an electrical receptacle of the outer case by a wire which is also connected with the temperature control device located in proximity of the film heater. The receptacle is connected to a power source by the power source connector.

The invention discloses a heat insulation phase change coating. The coating comprises the following components in parts by weight: 40-80 parts of double-component epoxy resin, 5-35 parts of heat dissipation filler, 5-30 parts of filler with high heat resistance and 5-25 parts of a phase change material. The heat insulation coating disclosed by the invention has the characteristics of high heat reflectivity, high heat radiation, low heat conduction, heat absorption, storage and release in a certain temperature range, multiple effects, good effects of reflecting illumination, realizing heat insulation and reducing temperature, safety, environment-friendly effect, strong adhesion and convenience in construction. The invention further discloses a preparation method of the coating.

The invention provides a testing device and a testing method of electricity-heat-mechanical stress three-factor combined ageing for transformer paper oil insulation ageing study; the testing device comprises an electric heating ageing oven, in which a transformer paper oil insulation simulator, a shake unit and a temperature control device used for controlling the temperature of the electric heating ageing oven. The shake unit can drive the simulator to vibrate, the simulator is electrically connected with a high-voltage power supply; the testing method includes vacuum drying and oil impregnation of insulating paper, attaching the paper to the earth electrode in a stainless steel case of the testing device, winding coils as a high voltage electrode outside the insulating paper and the earth electrode and injecting insulating oil to the stainless steel case; connecting a high tension lead with the high-voltage power supply and starting the shake unit; sampling the insulating paper and the insulating oil alternately and measuring insulation ageing parameters.

A thin, flat paperboard inserter or "needle" which is longer than the blood warmer heating plates is attached to the edge of the flattened tube envelope to enter the very narrow gap between the heating plates. The inserter is fed between the heating plates and advanced to emerge from the other end of the blood warmer where it is grasped and used to pull the envelope into operational position. A high air flow hydrophobic vent with check valve to prevent reverse flow is incorporated into the drip chamber to allow automatic priming and venting of air bubbles. A conductively heated and externally insulated drip chamber holder and a patient intravenous line that is passively insulated by a small annular air space extruded as part of the tube preserve heat in the warmed fluid, improving low flow rate performance. A reusable external heater may optionally be applied to the distal portion of the patient line to provide normothermic fluid to the patient down to essentially zero flow rate.

The invention provides a novel electric cooker temperature control assembly which is high in PTC heater heat transfer efficiency and stable in performance.The temperature control assembly comprises a kick type temperature controller, a PTC heater, a support and a heat conduction cover, wherein the upper heat dissipation surface of the PTC heater is tightly attached to the inner top surface of the heat conduction cover, and the kick type temperature controller and the PTC heater are pressed and fixed into the heat conduction cover through the support.The invention further provides an electric cooker using the temperature control assembly.The electric cooker further comprises a heating disc and a liner.A skirt extends outwards from the open portion of the heat conduction cover, an elastic component is arranged on the lower portion of the heat conduction cover, the heating disc is provided with a heat conduction cover installation hole, the heat conduction cover upwards penetrates through the heat conduction cover installation hole, the skirt of the heat conduction cover is sustained by the elastic component so as to be in close contact with the heating disc, and the PTC heater and the kick type temperature controller are connected in parallel and then connected with the heating disc in a power circuit of the electric cooker in series.The electric cooker adopting the temperature control assembly can achieve automatic temperature limitation, heat insulation and dry heating prevention.

A facing laminate for insulation products includes: a foil or metallized polymeric film sheet layer forming an inner layer of the laminate that is adapted be bonded directly to a surface of an insulation product; a paper composite sheet layer, which may include synthetic and / or inorganic fibers, forming an outer exposed layer of the laminate; and a scrim intermediate and bonded to the foil or metallized polymeric film sheet and paper composite sheet layers. The facing laminate may include a humectant and / or a water, oil, and / or grease repellant component. The paper composite sheet layer of the laminate exhibits greater dimensional stability and reduced wrinkling when the laminate is exposed to conditions of high humidity. Insulation products to be faced with this facing laminate include pipe insulation, duct board, duct wrap insulation, metal building insulation, and other building insulation products.

A nonvolatile memory device includes a pipe insulation layer having a pipe channel hole, a pipe gate disposed over the pipe insulation layer, a pair of cell strings each having a columnar cell channel, and a pipe channel coupling the columnar cell channels and surrounding inner sidewalls and a bottom of the pipe channel hole.

A composite material of sandwich structure integrating loading, heat insulation and ablation and the manufacturing method are characterized in that an integrated pre-forming body is acquired by puncture and suture of the reinforcing material of a bearing layer, the reinforcing material of an ablating cover, and a heating insulation layer positioned between the two layers; an epoxy resin system and a phenolic resin system are injected simultaneously into a vacuum-pumped mould, in which the integrated forming body is pre-placed, by two sets of RTM injection systems respectively, then, the reinforcing materials of the bearing layer and the ablating layer are soaked by epoxy resin and phenolic resin respectively; and the composite material of sandwich structure integrating loading, heat insulation and ablation can be obtained by solidified molding after mould filling. The invention has the advantages that the composite material of sandwich structure integrating loading, heat insulation and ablation is put forward and can be integrally formed by one-time operation, the function of the interlayer between every layer of the composite material is enhanced greatly, the integrality is good; the stratifying and peeling of the composite can be reduced effectively, and the products have good designable property and can be widely applied to the structural parts of aerospace which need heating insulation and thermal protection.

The invention discloses a production method for producing a heat insulation board for a vacuum heat insulation wall body by utilizing small expanded and vitrified balls, and the method comprises the following steps: putting the small expanded and vitrified balls, glass fiber, silica fume, bentonite and a getter into a stirring kettle, adding a wetting agent and a bonding agent, and stirring for forming a paste-like material; uniformly spreading the well stirred paste-like material on a micro-wave baking line according to the required thickness for baking, and further cutting into blocks when the water content in the board is below 1%; further placing the board which is cut into the blocks on a vacuum machine assembly line and vacuum pumping till the vacuum degree is below 200Pa; and cutting and packaging the heat insulation board for the vacuum heat insulation wall body. By applying the method provided by the invention for production, the process is simple, the emission of three wastes can be avoided, the produced heat insulation board for the vacuum heat insulation wall body is easy to construct, the fireproof property can be realized, the heat insulation board for the vacuum heat insulation wall body can play great roles in heat preservation and heat insulation, the combustion performance is grade A, the weight is light, the weather-resistant time is long, and the service life can be above 30 years.

The invention relates to a production method for an insulation board. The method comprises the following steps of: a, adding 50-70 parts by weight of expanded and vitrified small balls, 5-10 parts by weight of fibre glass, 5-20 parts by weight of silicon ash, 5-10 parts by weight of bentonite and 1-5 parts by weight of getter into a stirring kettle, then adding 2-5 parts by weight of wetting agent and 15-20 parts by weight of binding agent, and stirring the ingredients to obtain a pasty material; b, spreading out the well stirred pasty material on a microwave baking line, baking the pasty material until the water content of the board is less than 1% and then cutting the board into blocks; c, vacuumizing the board which is cut into blocks, wherein the degree of vacuum is below 200Pa; and d, cutting and packing the obtained insulation board. By utilizing the production method provided by the invention to produce the insulation board, the process is simple, no three wastes are discharged, and the produced insulation board can well achieve the effects of heat preservation and heat insulation, and has the combustion performance of grade A and the insulation thickness of 10-15mm; and the produced insulation board is light in weight and long in weather-proof time and has service life of more than 30 years.

The invention discloses a method for evaluating ageing state of paper oil insulation. The method is characterized by comprising the following steps of: 1, measuring a relative dielectric constant and a dielectric loss factor of a paper oil insulation test product by adopting a frequency domain dielectric spectroscopy method; 2, establishing a composite exponential function relational expression of the relative dielectric constant and insulation paper polymerization of the paper oil insulation test product, and a composite exponential function relational expression of the dielectric loss factor and the insulation paper polymerization of the paper oil insulation test product; and 3, evaluating the ageing state of a paper oil insulation system by using the relational expressions. A device provided by the invention is simple in structure, is easily implemented, and is greatly improved in accuracy.

An electronic cigarette is provided, comprising a non-metal outer sleeve, a first paint layer is configured along outer wall of the outer sleeve. The electronic cigarette of the application provides a first paint layer arranged on the outer sleeve to replace the stickers to make function of heat insulation, protection and aesthetic function, has the advantages of simple procedure, high production efficiency and has the beneficial effect of meeting the personalized needs of users.

A pipe insulation jacket comprises two jacket members that can be joined to form a hollow cylinder. Both jacket members are made of a dimensionally stable, thermally insulating material. Both jacket members are provided with an elastic coating layer extending over the inner surface and over one of the radially extending end faces of the jacket members. The outer surfaces of the two jacket members are covered by a common tape linking the jacket members at one side in such a way that they can be spread apart at the other to such an extent that the insulation jacket can be radially moved onto the pipe to be insulated. The tape extends over the jacket member at the side where the two jacket members are spread apart, and its inner side is provided with an adhesive layer to interconnect the two jacket members once the pipe is enclosed.

The present invention relates generally to thermal imaging systems and methods and uses therefor, and in a particular though non-limiting embodiment, to a method of detecting corrosion under insulation, as well as corrosion-related material data associated therewith. The system utilizes advanced infrared imaging video cameras to detect characteristic signatures of wet thermal traits on process equipment. Various embodiments of the invention integrate equipment, automation, and algorithms to form a method for identifying wet thermal insulation by scanning multiple locations along insulated piping, tanks, or other manufacturing equipment. Such scans can occur individually, sequentially, or simultaneously, with the results then being stored and comparatively analyzed. Further embodiments comprise tracking the approximate time of exposure to moisture, prediction of the corrosion rates for underlying insulated metal substrates, and measuring wall thicknesses along either predetermined random portions of the metal substrate.

The invention relates to the technical field of polysilicon ingot furnace designing and manufacturing, and aims to provide a follow-up heat insulation ring thermal field structure for the vertical oriented growth of polysilicon. The thermal field structure comprises a furnace chamber with a side surface enclosed heat insulation cage body, a crucible and a thermal field are arranged in the heat insulation cage body, and the upper end of the heat insulation cage body is connected with a lifting device; the upper part and the lower part of the heat insulation cage body are respectively provided with a top heat insulation board and a lower heat insulation body, wherein the top heat insulation board is fixedly suspended on an electrode, the lower heat insulation board and a heat exchange are fixed on a support column, the top heat insulation board and the upper end of the heat insulation cage body are movably connected, and the lower heat insulation board and the lower end of the heat insulation cage body are movably connected; and a circular follow-up heat insulation ring is fixed in the heat insulation cage body through a plurality of connecting devices. The follow-up heat insulation ring thermal field structure for the vertical oriented growth of polysilicon has reasonable design, can increase the grain size of polysilicon, reduce grain boundary and improve the verticality of the growing direction of polysilicon so as to improve the quality of polysilicon ingots, and simultaneously the follow-up heat insulation ring also plays the role of energy consumption reduction.

The invention discloses a transformer insulation thermal ageing state reliability evaluation method based on Weibull distribution. The transformer insulation thermal ageing state reliability evaluation method comprises the following steps: 1, collecting paper oil insulation thermal ageing characteristic data; 2, establishing a reliability evaluation index system; 3, determining comprehensive weights of all indexes; and 4, constructing a reliability evaluation hybrid Weibull distribution model, and evaluating a paper oil insulation thermal ageing state. According to the transformer insulation thermal ageing state reliability evaluation method, a reliability evaluation index system is established by analyzing the sensitivity of each paper oil insulation thermal ageing characteristic parameter to the thermal ageing state, and the paper oil insulation thermal ageing state reliability evaluation is performed by integrating the data and the weights of all the indexes. Compared with an existing paper oil insulation thermal ageing state evaluation method in the aspects of parameters such as the insulation paper polymerization degree and the content of furfuraldehyde in oil, the transformer insulation thermal ageing state reliability evaluation method has the advantages that the influence of the reliability of all the indexes to the overall reliability of paper oil insulation can be more sufficiently considered, and thus relatively accurate paper oil insulation thermal ageing reliability values can be obtained, and the accuracy rate of monitoring and evaluating the insulation ageing state of an oil immersible power transformer is effectively improved.

The invention discloses an evaluation method for a paper oil insulation aging state through characteristic parameters based on time domain dielectric response. The evaluation method for the paper oil insulation aging state through the characteristic parameters based on the time domain dielectric response comprises the steps of measuring a polarization and depolarization current of a system, simulating an equivalent circuit of the polarization and depolarization current, calculating circuit parameters of an equivalent circuit model to obtain a depolarization current, smoothing the depolarization current and fitting the depolarization current to obtain depolarization power quantity, building a function relationship of aging time and characteristic parameters of the depolarization power quantity, integrating the relationship between the polymerization degree changing rule and the characteristic parameters of the depolarization power quantity through combining a first order dynamical model of a polymerization degree changing rule of mineral paper oil insulation acceleration thermal aging. By the utilization of the evaluation method for the paper oil insulation aging state through the characteristic parameters based on the time domain dielectric response, the operation is simple, sensitivity is high, and the evaluation method for the paper oil insulation aging state through the characteristic parameters based on the time domain dielectric response is suitable for the use of engineering.

The invention relates to an insulation backboard for a solar photovoltaic module, and belongs to the technical field of solar photovoltaic cells. The insulation backboard comprises a weather-resistant layer, an electric insulation layer and an adhesive layer, and is characterized by further comprising a blocked layer arranged between the weather-resistant layer and the electric insulation layer, wherein the surface of the blocked layer facing the weather-resistant layer is combined with the weather-resistant layer through a first bonding layer, the surface of the blocked layer facing the electric insulation layer is combined with one surface of the electric insulation layer through a second bonding layer, the other surface of the electric insulation layer is combined with the adhesive layer through a third bonding layer, the weather-resistant layer is a mixture of polyvinylidene fluoride and acrylic acid resin and an inorganic material, the blocked layer is an aluminum foil or a polyethylene glycol terephthalate film, and the electric insulation layer is polyethylene glycol terephthalate, poly (ethane ethylene 2,6-naphthalate) or polyamide. The insulation backboard can increase steam obstruction effect and ultraviolet resistance, ensure the service life, enhance the steam obstruction effect, and meet the requirement for industrialization scale production without dependence on import.

A cable that comprises a plurality of conductors. Each conductor is surrounded by a layer of insulating material. A jacket encloses the plurality of conductors. The jacket is formed of an insulating material. A separator separates the plurality of conductors. The separator is formed of an insulating material. The insulation material of at least one of the plurality of conductors, the jacket, and the separator includes micro oxide particles to form a composite insulation which has at least one of an increased flame retardancy and improved electrical properties over the insulating material without the micro oxide particles, such that the cable has an improved electrical performance.

A pipe insulation assembly includes a length of tubular insulation with a longitudinally extending slit so that the tubular insulation can be passed over and mounted on a length of pipe and a jacket overlaying the outer surface of the tubular insulation. To facilitate the installation of the pipe insulation assembly, a ruler, which is associated with the jacket and, preferably, no longer visible when the pipe insulation is mounted on a pipe, extends for the length of the jacket and is located adjacent the slit in the tubular insulation. The ruler has units of linear measurement marked thereon for measuring the pipe insulation assembly in the direction of the length of the pipe insulation assembly.

The invention discloses a traction transformer layered oilpaper insulation dielectric response experiment system comprising a transformer oil tank, a layered insulation system disposed in an experiment box body, a connecting device (an oil pump, a plastic hose and multi-pipe joints) of the transformer oil tank and the experiment box body, a dielectric response tester, and a control and data acquisition system. The experiment system of the invention can be used for simulating non-uniform heat aging in an actual traction transformer oilpaper insulation system and researching the dielectric response characteristic of the oilpaper insulation of non-uniform heat aging, and can help to research remaining life evaluation of the oilpaper insulation with non-uniform heat aging distribution.

The invention provides an integrated skin capable of achieving heat shielding, heat insulation and stealth and a preparation method of the integrated skin. The integrated skin comprises a wave-transparent ceramic-based composite material, an electrical loss-type wave-absorbing heat-insulating integrated layer, a transition layer, an organic wave-absorbing layer, and a metal structural layer from the outside in, wherein the functional layers are connected through ceramic-based composite bolt members so as to form the skin structure. The skin has the advantages that the stealth performance, heatshielding and heat insulation performance and structural load-carrying capacity are designed comprehensively and optimally, insufficient broadband wave-absorbing performance, low structural strengthand other problems of stealth structural materials are solved effectively under high temperature conditions, and finally the design of the integrated skin capable of achieving the stealth function isachieved; the broadband stealth performance is achieved through the design of a multi-layer wave-absorbing periodic structure or a resistive film, and the electrical loss-type high temperature-resistant wave-absorbing structure with an heat insulation function is designed on the outer layer of the integrated skin capable of achieving heat shielding, heat insulation and stealth, so that heat insulation, cooling and absorption of high-frequency electromagnetic waves are achieved; and the working temperature of an inner-layer magnetic wave-absorbing material is made lower than the Curie temperature of the inner-layer magnetic wave-absorbing material, and finally the integrated skin capable of achieving heat shielding, heat insulation and stealth is obtained.

The present invention provides, among other things, a new pipe insulation system that includes a reinforced, elastic foam lap seal closure system that can maintain the integrity of the protective closure around a pipe to be insulated, and can minimize seal failures. One aspect of this invention is the novel closure system that combines a seam seal vapor barrier with a reinforced elastic foam lap seal which bolsters seal integrity and helps prevents seam closure failure.

The invention discloses a construction material with the effects of sound absorption, sound insulation, heat preservation, anti-condensation, etc., a preparation method and the application thereof. The construction material consists of the following independent constituents: constituent I, constituent II and constituent III; wherein, the constituent I is a water-base interfacial agent; the constituent II mainly consists of the following constituents according to certain weight portion: 55 to 65 portions of plant fiber and 35 to 45 portions of caking agent; the constituent III is a sealing agent. The construction material of the invention is made of wood fiber by chemical treatment and the construction material is sprayed on the base surface of buildings, which has the effects of sound absorption, sound insulation, heat preservation and anti-condensation, fire protection, moulding prevention, etc. The construction material of the invention is completely suitable for being used on a base surface configuration of any building, such as arc form, waveform, etc., and also is suitable on large-scale public places needing sound absorption, sound insulation, heat preservation, anti-condensation, fire protection, etc. such as a gymnasium, a natatorium, an opera house, a cinema, an exhibition center, an airport, tunnel, an industrial factory building, a machinery room, etc.

The invention discloses a method for estimating the low-frequency dielectric loss of a paper oil insulation system based on parameter identification. Firstly, an XY model is used for simulating the polar characteristics of the transformer paper oil insulation system, a paper oil insulation system XY model equivalent circuit is established, and a relation expression among the circuit parameter, the characteristic quantity complex capacitance and the dielectric loss factor of the XY model equivalent circuit is established; a frequency domain dielectric spectrum method is used for measuring the complex capacitance and the dielectric loss factor of the paper oil insulation system of a field transformer; parameterization is conducted on the equivalent circuit model through the measured complex capacitance of the high-frequency section and the dielectric loss characteristic quantity, and a mathematical optimization model of parameter estimation is established; an improved particle swarm optimization algorithm is used for distinguishing the parameter value of the XY model equivalent circuit with four polar branch circuits; finally, the distinguished parameter value of the XY model equivalent circuit is used for calculating the complex capacitance and the dielectric value of the low-frequency section of the paper oil insulation system, and a frequency domain dielectric spectrum in a wide range is obtained. According to the method for estimating the low-frequency dielectric loss of the paper oil insulation system based on parameter identification, the paper oil insulation state of the large power transformer can be rapidly estimated based on the frequency domain dielectric spectrum method.

The invention discloses a method and a device for monitoring main insulation of three phases of cables under intersection and interconnection of metal protective layers on line, relates to a method and a device for monitoring the main insulation of the three phases of cables on line, and aims to solve the problem that the conventional method and the conventional device cannot be used for monitoring the insulation performance of the three phases of cables under intersection and interconnection of the metal protective layers on line. Current flowing through wire cores at two ends of each phase of cable is measured by using two current transformers; a difference value is calculated, so that a current value flowing through the main insulation of the cable is obtained; due to measurement for three phases of voltage by a voltage transformer, a dielectric loss factor of the main insulation of each phase of cable can be monitored on line; and therefore, the main insulation of the three phases of cables can be monitored on line. A plurality of paths of synchronous analog / digital conversion chips at two ends are controlled to perform synchronous sampling through a global positioning system (GPS) satellite synchronous signal, and calculation is performed in a computer, so that the main insulation of the three phases of cables under intersection and interconnection of the metal protective layers can be monitored on line. The method and the device are suitable for on-line monitoring of the insulation performance of the three phases of cables under intersection and interconnection of the metal protective layers.