33results about How to "Precise and controllable temperature" patented technology

The invention discloses a heat flow simulation test device of crystallizer meniscus horizontal heat transfer, which comprises a billet casing, a crystallizer, a computer, a base, two temperature collectors and two temperature control modules, wherein the crystallizer is fixed on the base, the billet casing is fixed above the crystallizer, a casting powder sample is fixed between the crystallizer and the billet casing, and a camera is arranged on one side of the casting powder sample. Induction heating devices are arranged on two sides of the billet casing and connected with the first temperature control module. A thermocouple is respectively inserted into the billet casing and the crystallizer, the second temperature control module is respectively connected with the thermocouple in the billet casing and the first temperature collector, and the thermocouple in the crystallizer is connected with the computer through the second temperature collector. A water inlet pipe and a water outlet pipe are arranged on the base. The heat flow simulation test device solves problems that heat flow among liquid steel, casting powder and the crystallizer in the existing steel metallurgy continuous casting process cannot be monitored and thermodynamic change of casting powder in the heat transfer process cannot be observed in situ.

The invention relates to the technical field of low-temperature leak detection testing of valves, in particular to a low-temperature leak detection system and leak detection method of a valve. The system comprises a gas supply and distribution device, a refrigeration device, a first helium mass spectrometer leak detector, a second helium mass spectrometer leak detector, a plurality of gas inlet pipelines, a plurality of gas outlet pipelines and a vacuum detection platform, wherein the gas supply and distribution device is communicated with the vacuum detection platform through the gas inlet pipelines, the first helium mass spectrometer leak detector is communicated with the vacuum detection platform through the gas outlet pipelines, each pair of gas inlet pipeline and gas outlet pipeline is respectively connected to two ends of the corresponding valve to be detected, and valves are respectively arranged on the first helium mass spectrometer leak detector, the second helium mass spectrometer leak detector, the gas inlet pipelines and the gas outlet pipelines. According to the invention, the refrigeration device is used as a cold source, so that the safety and the reliability of thetest are improved, the labor cost and the test cost are reduced, the temperature of a sample is accurate and controllable, a plurality of valves to be tested can be detected in one test, and the testperiod is short.

The invention discloses a continuous-casting casting powder comprehensive heat transfer heat flow testing method, which includes the following steps: melting, keeping the heat and continuous casting the casting powder in induction furnaces through a carbon crucible, enabling ingredients and temperature of the casting powder to be uniform and accordant; pouring the molten casting powder in a copper base, performing liquid protection and quick cooling the casting powder in the copper base, so as to form a subtransparent vitreous casting power film; pouring out and sending the casting power film to a heat preserving furnace for thermal insulation, performing stress relieving and annealing, taking out and cooling the casting power film, so as to prepare an experimental used powder film; and cautiously placing the experimental used powder film in a copper mould of a testing system, adjusting the experimental position of the copper mould in place, starting a power supply for experiment execution, during the experiment, collecting temperature data at different positions in the copper mould through a thermocouple sensor inserted in the copper mould, and calculating out the heat transfer flow passing by the casting slag through a computer in a real-time manner. Through the adoption of the method provided by the invention, temperature of a blank housing can be accurately controlled, the precision for testing the horizontal comprehensive heat transfer heat flow data of the casting powder is high, test pieces can be prepared conveniently, stably and reliably, and the manufacturing cost is low.

The invention discloses a portable intelligent tubule sperm temperature control meter. The control meter comprises a base and a control meter body which can be separated from each other, wherein a battery is arranged in the base, an inserting groove is formed in the upper end of the base, and a contactor male base is arranged in the center of the inserting groove; the control meter body comprises a liner, a shell wrapping the liner, and a cap arranged at the upper end of an opening of the liner; a heating disk is connected to the bottom of the liner in a seamless mode, and a plurality of temperature detectors are arranged on the outer side wall of the liner; a contactor female base matched with the base is connected to the bottom of the shell; the heating disk, the temperature detectors and the contactor female base are all connected with a circuit board arranged in the shell and connected to a control panel. According to the portable intelligent tubule sperm temperature control meter, the temperature in the control meter is actively adjusted so that tubule sperm can be thawed, the temperature of the tubule sperm can be kept, the temperature is accurate and controllable, no hot water needs to be added for adjustment, and therefore the sperm is not influenced by the temperature of the external environment, the quality of the tubule sperm is guaranteed, and a technician can carry the tubule sperm for use conveniently.

The invention discloses a low-pressure synthesis ammonia tower and a renewable energy source low-pressure synthesis ammonia system, the synthesis ammonia tower comprises a reactor outer cylinder, a raw material gas inlet pipe and a product gas outlet pipe, a plurality of catalyst frames are sleeved in the reactor outer cylinder, and a first catalyst bed layer is arranged in each catalyst frame; a central pipe is also arranged in the reactor outer cylinder, the central pipe is communicated with one catalyst frame, one-way airflow channels which are sequentially communicated in series are formed among the catalyst frames, and the product gas outlet pipe is communicated with the output gas output end of the last catalyst frame which participates in the synthesis ammonia reaction; a plurality of first heat exchange tube bundles penetrating through all the catalyst frames are arranged in the catalyst frames, one end of each first heat exchange tube bundle is communicated with the high-pressure water inlet tube, and the other end of each first heat exchange tube bundle is communicated with the steam tube. The ammonia synthesis tower disclosed by the invention can be used for efficiently transferring heat, preheating feed gas and producing byproduct steam, can realize accurate temperature control of a bed layer, is beneficial to ammonia synthesis reaction, and has the advantages of energy conservation and consumption reduction, the operation temperature range of the ammonia synthesis tower is 300-450 DEG C, and the pressure range is 0.1-10MPa.

The invention discloses a heating device capable of randomly adjusting a heating area of high-strength steel. The heating device comprises an upper die holder, a lower die holder, a heating plate, a plurality of movable electrodes, a plurality of upper fixed electrodes, a plurality of lower fixed electrodes, cooling water channels, and a heat conducting plate, wherein a sliding guide rail is arranged on the lower end face of the upper die holder; the upper end surface of the lower die holder is provided with a base, and cooling blocks are arranged on the base; the movable electrodes are movably mounted on the sliding guide rail through an air pressure device and can horizontally move on the sliding guide rail; the upper fixed electrodes are fixed on both sides of the guide rail; the lowerfixed electrodes are fixed on both sides of the base; the cooling water channels are arranged inside the cooling blocks; the heat conducting plate is arranged above the cooling blocks; different regions of the heating plate are heated at different temperatures by the energy transmitted after the movable electrodes and the upper fixed electrodes are electrified; the heating plate can be cooled by introducing cooling water into the cooling water channels. The invention further discloses a heating method of the heating device capable of randomly adjusting the heating area of the high-strength steel.

The invention provides a novel firewood-coal-electricity integrated high-temperature equipment for ceramic firing. The novel firewood-coal-electricity integrated high-temperature equipment for ceramic firing comprises an electric-control high-temperature furnace and a firewood-coal combustion furnace. The electric-control high-temperature furnace communicated with the firewood-coal combustion furnace through a smoke channel. The electric-control high-temperature furnace is located above the firewood-coal combustion furnace and used for providing the temperature required for ceramic firing. The firewood-coal combustion furnace is used for providing reductive gas required for ceramic firing. An ash pond is arranged below the firewood-coal combustion furnace. The novel firewood-coal-electricity integrated high-temperature equipment for ceramic firing has the beneficial effects that when the firewood-coal-electricity integrated high-temperature equipment is used for ceramic firing, a green body to be fired is placed in a hearth of the electric-control high-temperature furnace, a temperature source is provided by the electric-control high-temperature furnace, an atmosphere source (the reductive gas) is provided by the firewood-coal combustion furnace, the atmosphere source provided by the firewood-coal combustion furnace enters the hearth of the electric-control high-temperature furnace through the smoke channel and air holes, and the ceramic firing quality is greatly improved.

An air conditioner system with draught fan waste heat recycling comprises a first-level heat exchanger (2), a first water stop device (3), an air blower (5), an air filter (7), a second-level heat exchanger (9), a second water stop device (11) and a controller. The air conditioner system is characterized in that the first-level heat exchanger, the first water stop device, the air blower, the air filter, the second-level heat exchanger and the second water stop device are sequentially arranged in the airflow flow direction, an air conditioner air inlet temperature sensor is arranged at the upstream position of the first-level heat exchanger, and a draught fan inlet temperature sensor is arranged at the upstream position of the air blower and between the air blower and the first water stop device. Control precision is high, dynamic response is sensitive, more energy is saved, and the efficient and energy-saving type dehumidification air conditioner system accurate and controllable in temperature is achieved.

The invention discloses a liner tube aging device, which comprises a control box, an airflow distribution device and a heating device; a flow meter, a temperature controller and a time controller areinstalled on the side wall of the control box, the temperature controller is located on one side of the flow meter, and the time controller is located on the lower side of the temperature controller;the airflow distribution device comprises an upper aluminum air chamber and a lower aluminum air chamber, the lower aluminum air chamber is fixedly connected to the top of the control box, and the upper aluminum air chamber is fixedly connected to the upper end face of the lower aluminum air chamber; the heating device comprises an aluminum heating block, and the aluminum heating block is fixedlyconnected to the upper end face of the upper aluminum air chamber; the temperature of a heating rod in a heating module can be set, so that the temperature of a filling material in a liner tube is accurate and controllable, the temperature rising speed is high, the aging of the filling material in the liner tube can be ensured, gradual temperature rising is realized, and the success rate of linertube aging is greatly improved.

The invention discloses a multifunctional microwave heating reaction control system which comprises a water tank (1), a microwave heater (3), a micro processor (2) and a water tank bottom shell, wherein a magnetron tube for heating is arranged in the microwave heater; a heating cavity (4) of the microwave heater extends into the water tank from a base plate of the water tank; a layer of shielding mesh capable of penetrating through liquid covers the heating cavity; the micro processor (2) controls water temperature in the water tank by controlling the operation of the microwave heater; a circulating pump (7) and a pipeline (6) butted with an outlet of the circulating pump are arranged at the bottom of the water tank. The multifunctional microwave heating reaction control system further comprises a lifting mechanism (15) based on screw rod transmission. By adoption of a closed-loop PID control system, the temperature can be precisely controlled. The multifunctional microwave heating reaction control system has an automatic temperature control function, is excellent in convection effect, high in safety and high in integration degree and can automatically lock a liquid level and ensure that the reaction can be stably carried out.

The invention relates to a technology for heating magnesium alloy plate and strip roll. A device for induction heating of magnesium alloy plate and strip roll comprises an inductor system, a temperature measurement system, a temperature adjusting system, an intelligent processing unit, and a PLC control system. The steps of the roll induction heating method comprises: firstly, setting target temperature of the roll and temperature difference allowed by a roll surface, starting the roll and the roll rotating; secondly, starting the inductor system, heating the roll surface of the roll to the target temperature; third, in the heating process, a thermodetector of the temperature measurement system detecting the temperature of the roll surface of the roll in real time, and transmitting real-time temperature data of the roll surface to an intelligent processing unit, the intelligent processing unit calculating the temperature, and sending a calculation result to a PLC control system; fourth, the temperature adjusting system and the inductor system regulating the temperature of the roll surface in real time according to the instruction sent out by the PLC control system. The method and the device can satisfy requirements of roll rapid heating and real-time temperature accuracy control, and ensure technological requirements for smooth warm rolling of magnesium alloy plates and strips.

The invention provides a polymerization tank. The polymerization tank comprises an insulating shell body which is provided with a sample chamber and an insulating cover body covering the insulating shell body, wherein a sample rack is arranged in the sample chamber of the insulating shell body; an ultraviolet lamp chamber which is arranged corresponding to the sample rack is embedded inside the insulating cover body; and a refrigeration system is arranged in the insulating shell body, and a refrigeration evaporator in the refrigeration system is arranged on the side wall of the sample chamber. According to the polymerization tank, the temperature can be accurately controlled, the cooling speed is high, strong ultraviolet ray can be provided to facilitate polymerization of biological samples, and biological samples manufactured by utilizing the polymerization tank have stable quality.