211 results about "Hot stick" patented technology

Disclosed are a method and a device for measuring contact heat transfer coefficient on the solid interface. The method comprises connecting heating bar 12, the first sample 13, thin slice 14, the second sample 15, cold-trim bar 9, centring steel ball 16, pressure device 3 in sequence; adding corresponding thin slice 14 between the contacting surface of the two samples; increasing the number of contacting surface and enlarging temperature difference of the contacting surface; connecting the input terminals of thermal couple 4 and temperature control meter 5, and parallel the output terminal of the temperature control meter 5 with the industrial control machine 7 via the RS232 converter; heating the heating bar 12 with the heating stove 11, adding an asbestos heat insulating layer 10 around the sample to insulate heat; the industrial control machine 7 collecting temperature signal via the temperature control meter 5, displaying and analyzing.

The invention discloses a method for testing heat storage performance of a building material and a tester. The tester mainly comprises a heat insulation barrel, an environment chamber, a D/C converter, an A/D converter, temperature sensors, an electric quantity sensor and a computer. The temperature sensors are arranged in the heat insulation barrel and the environment chamber respectively for measuring the temperatures of the material, the environment chamber and the inner and outer walls of the heat insulation barrel; the computer controls the heating power of a heating rod through the electric quantity sensor and the D/C converter; and temperature signals are monitored and recorded by the computer through the temperature sensors and the A/D converter. A computer program can calculate the heat storage performance of the material through a temperature curve of heating and heat release processes. Aiming at the condition that the conventional method for testing the heat storage performance of the material in the search of the building material, particularly a building phase change material, is insufficient, the method of the invention simply and quickly tests the heat storage performance of the material during change at a certain temperature interval, has the characteristics of high detection precision, strong reliability, low cost and the like, and can realize automation of the test process at the same time.

The invention relates to a testing device and method for hydrogen constant-volume compression ignition, belonging to the technical field of combustion of internal combustion engines. The device comprises a body, transverse clapboards, groove tents, visible view windows and heating sticks, wherein the two visible view windows are packaged at the two ends of the body respectively and are fixed together through a fastening bolt; a plurality of the heating sticks are arranged in heating stick installation through holes of the body; during research of the compression ignition characteristic of hydrogen, the transverse clapboards are arranged in a first groove or a second groove of the body or in the two grooves simultaneously; and during research of the spreading process of hydrogen and oxygen flames close to a near wall face, the groove tents are arranged in the first groove and the second groove. The testing method comprises a volume bullet heating method, a transverse clapboard fire retardance ventilation method and a combustion waste gas exhausting method. Due to the adoption of the device and the method, the volume bullet heating is quick, the heating efficiency is high, the temperature rise is high, the heating performance is reliable, the appearance of a system is not influenced, internal hot points are avoided, and the sealing performance is high.

Heat transfer test assemblies for monitoring and recording fouling of aqueous systems are disclosed. The heat transfer test assemblies include an outer tube member, a heating rod positioned within the outer tube member, a ribbed tube sleeve fitted over the heating rod and thermocouples for sensing the wall temperature of heating rod. The disclosed heat transfer test assemblies enable improved monitoring of systems employing enhanced heat exchanger tubes. Monitoring and recording apparatuses including the heat transfer test assemblies are also disclosed.

An apparatus for measuring phase angle difference between two conductors uses a hot stick, a field unit, and reference unit. Voltage is sensed at a conductor, and the voltage is passed through an automatic gain control which adjusts the voltage input to a voltage detector to a level which prevents saturation of the voltage detector. Non-saturation of the voltage detector enables detection of all of the data in a detected sine wave. Pulse width modulation and pulse width modulation RF transmission are used to provide for data transmission from a hot stick to a field unit.

A remote control tool assembly for use in live line environments having an insulated pole (often termed a “hot stick”) with a tool at one end that generally includes a power supply so that the tool is fully isolatable at the end of the insulated pole. At the other end, a tool control transmitter is positioned which is configured to communicate wirelessly with the tool. Thus, the user can operate the tool remotely from the tool controller, which is particularly useful in a live line environment. A tool body assembly and a tool having a tool body assembly is disclosed.

The invention relates to a method of reducing the concrete hydration heat of a cast-in-place pile in a permafrost region. The method comprises the following steps of (1) constructing in the permafrost region, and digging a foundation pit for the cast-in-place pile according to a design requirement; (2) computing the hydration heat release of concrete needed by the cast-in-place pile according to a routine method, and computing the various needed parameters of a hot stick according to the routine method; (3) binding a reinforcement cage according to the design requirement, and fixedly arranging a sleeve at a required design position in the reinforcement cage after the binding is completed; (4) arranging the hot stick in the sleeve, and hoisting the reinforcement cage into the foundation pit for the cast-in-place pile after fixed arranging of the hot stick is completed according to a confirmed hot stick embedding length; (5) preparing and stirring the concrete which is mixed with an anti-freezing agent according to design grade requirements, pouring the concrete in the foundation pit for the cast-in-place pile, immediately covering with a thin film after the pouring is completed, and then covering with a straw curtain or heat preservation materials for heat preservation; (6) pulling out the hot stick and carrying out follow-up construction according to the routine method. According to the method of reducing the concrete hydration heat of the cast-in-place pile in the permafrost region, disclosed by the invention, the refreezing time of frozen soil can be reduced, and the construction is simple and convenient.

The invention provides a device and method for a high temperature melt growth choking experiment. The device comprises a heating oven which comprises an oven body made of zirconia with a cylindrical structure. A ring of a high temperature heat insulation layer is placed in the oven body around the inner wall. The side wall of the oven body is provided with several transparent windows in which thermal couples are installed. Several test bars are placed vertically at the center of the oven body. Each test bar comprises a tungsten rhenium heating bar located in the center. The outer side of the tungsten rhenium heating bar is an alumina layer. The outer side of the alumina layer is a zirconium 4 alloy layer. A transformer is mounted below the heating oven, and is connected with the tungsten rhenium heating bars. Through the implementation of electrical heating to the tungsten rhenium heating bars, the fuel rod decay heat can be simulated. The maximum heating temperature during experiment can reach 2000 DEG C, therefore, the faithful simulation of the melting of core material and the migration and choking characteristics of the high temperature melts of over 2000 DEG C are achieved. The arrangement of several visualization transparent windows at the side of the oven body can dynamically expound the behavioral mechanism of the melting of core material and the migration of melt.

A remote control tool assembly for use in live line environments having an insulated pole (often termed a “hot stick”) with a tool at one end that generally includes a power supply so that the tool is fully isolatable at the end of the insulated pole. At the other end, a tool control transmitter is positioned which is configured to communicate wirelessly with the tool. Thus, the user can operate the tool remotely from the tool controller, which is particularly useful in a live line environment.

Cable clamps configured to be installed from the ground with an extendable reach tool, such as a hot stick, are provided. Initial spring tension temporarily holds a drop cable in a drop cable section of the clamp, and a main span cable can be guided into a main span section of the clamp and tightened.

The invention relates to a hot-pressing sizing device. The hot-pressing sizing device comprises a base, a first heat insulation piece, a second heat insulation piece, a heating lower die, a cooling lower die, a pressing base, a third heat insulation piece, a fourth heat insulation piece, a heating upper die, a cooling upper die, a plurality of guiding columns and buffer springs, wherein the heating lower die and the cooling lower die are arranged in the first heat insulation piece and the second heat insulation piece in an inlaid mode respectively; the heating upper die is arranged in the third heat insulation piece in an inlaid mode; the cooling upper die is arranged in the fourth heat insulation piece in an inlaid mode; the multiple guiding columns are fixed to the pressing base and sleeved with the buffer springs. Heating rods are arranged in the heating lower die and/or the heating upper die. The cooling lower die and/or the cooling upper die are provided with water inlets, water outlets and pipelines which are communicated with the water inlets and the water outlets. A cell phone middle frame is clamped between the heating lower die and the heating upper die, the cell phone middle frame is deformed at a preset high temperature through the heating rods, and the flatness is restored. Then the cell phone middle frame which is affected at the preset high temperature is taken out and clamped between the cooling lower die and the cooling upper die, and the cell phone middle frame can be cooled and sized rapidly by pouring circulating water flow. According to the hot-pressing sizing device, the sizing effect is good, and the production cost is reduced.

The invention relates to a soft measurement method based on variable-boundary segmentation energy balance, a multifunctional wet steam measuring needle and a wet steam heat absorption measurement and control device. The multifunctional wet steam measuring needle is characterized by consisting of an electric heating rod, an electric heating rod sleeve with uniform and screw pitch-equal convex spiral ribs, a multifunctional wet steam measuring needle outer wall tube, a front sensor seat and a rear sensor seat. The wet steam heat absorption measurement and control device consists of an isothermal sleeve, temperature measuring points distributed on the inner wall and the outer wall of the isothermal sleeve at equal distances and computer online measurement and control equipment. The multifunctional wet steam measuring needle is put in the wet steam heat absorption measurement and control device and is wholly pressed and fixed by an outer sleeve, an outer sleeve flange cover and an outer sleeve flange disc; based on the flowing and heating process mechanism analysis of wet steam in the structure, a soft measurement model and an online calibration model of measurement results are established; and the whole equipment is simple in structure and is suitable for various measurement fields in relation to wet steam two-phase flow, in particular to the measurement of exhaust steam humidity of a condensing turbine.

A cutout cover includes an arcuate top portion covering an insulator having a closed top and an open bottom with a slit extending therebetween. A midsection can connect the top portion to an open end adapted to access the cutout. The top portion is bell-shaped with an upper and lower dome, two opposing sides, and a slit between the sides. A fastener mechanism is attached to the two opposing sides with an aperture disposed on each of the sides for receiving a fastener.

A remote adapter for use with a lineman's hot stick that enables the lineman to mount a wide variety of power tools onto the far end of the hot stick for tasks involving high voltage equipment. The remote adapter allows the power tool to be actuated by pulling on an insulating pull-rope. The remote adapter includes a body for supporting the power tool, the body including: at least one slot for receiving at least one strap configured to strap the power tool to the body, at least one pivot hole for receiving a pivot pin, and a splined universal connector for attachment to a hot stick. The remote adapter also includes a lever arm that is pivotable with respect to the body. The lever arm includes a hole for receiving a trigger pin which actuates the power tool trigger when the insulating rope attached to an attachment feature is pulled.

A hot stick switch head is described and shown in the specification and drawings having a body, a jaw assembly attached to the top end of the body, and a base attached to the bottom end of the body. The base is adapted to be attached to an insulated pole or “hot stick.” The body has a channel extending longitudinally along at least a portion of the body. The jaw assembly has an open position and a closed position for securing high-voltage fuses, fuse barrel assemblies, or other similar or related devices during removal and installation.

The invention discloses a precision forging process for a fan-shaped forged piece. The fan-shaped forged piece is a fan-shaped worm gear which is one of parts in a high-voltage switch operating mechanism. The precision forging process comprises a step of preparing a bar stock; a step of heating the bar stock to 760 to 900 DEG C; a step of placing the bar stock into a pre-forming die, and forming pre-formed blank; a step of heating the pre-formed blank to 760 to 900 DEG C; and a step of placing the pre-formed blank into a final forming die, and forming a finally formed blank fan-shaped worm gear with an outer-circle flange and a center hole. The invention also discloses a large-angle fan-shaped worm gear and a small-angle fan-shaped worm gear, which are forged by the process, wherein the large-angle fan-shaped worm gear has a sector angle of 135 degrees, and the small-angle fan-shaped worm gear has a sector angle of 120 degrees. The fan-shaped worm gear is manufactured according to an actual operation fixing working angle of the worm gear, so that the material consumption of the precision forging process is remarkably reduced compared with that of the conventional integral round worm gear; and a product forged by the process is high in material density, neat and attractive in appearance, free of burr and flashing, low in machining allowance, material-saving and favorable for machining.

The invention discloses an energy-saving tempering furnace. The furnace comprises a casing, the top portions of left and right sides of an inner wall of the casing are fixedly connected with first heating rod bodies, the bottom of the inner wall of the casing is fixedly connected with a second heating rod body, and a stabilizer plate is fixedly connected to the inner wall of the casing and above the second heating rod body. Through the mutual cooperation of a rotating electric machine, a rotating shaft, a driving gear, a first rolling bearing, a forward rotating threaded rod, a second rollingbearing, a reverse threaded rod, a driven gear, a thread block, a movable block, a sliding groove, a sliding block, a sliding rod, a sliding plate, a counterweight, a pulley, a through groove, a steelwire rope, a stable motor, a stable rotating shaft, a fixed sleeve and fan blades, the furnace achieves the effect of high heating efficiency, solves the problem of low heating efficiency of the energy-saving tempering furnace, makes air circulate inside a tempering furnace body, greatly improves the work efficiency, reduces the time and effort of workers, and brings great convenience to a user.

The invention discloses a test device for radiant heat resistance of fabrics, and belongs to the field of safety technology. The test device comprises a radiative heat source, a copperplate calorimeter and a data acquisition system, wherein the radiative heat source consists of two silicone carbide heating rod sets and a resistor; each silicone carbide heating rod set comprises a plurality of silicone carbide heating rods which generate thermal radiation after being electrified; in a circuit, the silicone carbide heating rod sets are formed by serially connecting the silicone carbide heating rods, and the two parallelly connected silicone carbide heating rod sets are connected in series with the resistor and then connected to a 220V power supply; a copper-constantan thermocouple is welded in the center of the internal surface of the arc of a copperplate and then connected to an acquisition card through a through hole at an assembling block; the copperplate is glued to the assembling block through a bonding agent; the data acquisition system consists of the acquisition card and a computer, wherein the acquisition card acquires a temperature signal of the copper-constantan thermocouple and then inputs the temperature signal into the computer for data processing and computation, and the like. The test device is used for testing the radiant heat resistance of the fabrics, has the characteristics of reasonable structure, accurate test and strong operability, and can meet the requirements of the radiant heat resistance tests for the fabrics.