1139 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.

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 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 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.

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 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 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 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.