12results about How to "Increase superheat" patented technology

The invention provides a preparation method of fine spherical vanadium and vanadium alloy powder, which comprises the following steps: step 1, compression molding: loading vanadium powder or vanadium alloy powder into a mold, and pressing into a vanadium rod or a vanadium alloy rod; step 2, pre-sintering: putting the vanadium rod or the vanadium alloy rod into a vacuum furnace for pre-sintering, and cooling along with the furnace; 3, vacuum vertical melting sintering is conducted, specifically, the pre-sintered vanadium rod or vanadium alloy rod is placed in a vacuum vertical melting furnace to be sintered, and the vanadium rod or vanadium alloy rod obtained after vacuum vertical melting sintering is obtained; and 4, electrode induction melting gas atomization, wherein the vanadium rod or the vanadium alloy rod subjected to vacuum vertical melting sintering is heated, smelted and atomized into spherical vanadium powder or vanadium alloy powder with the particle size being 0-100 micrometers through an induction coil. The method has the advantages of short process flow, high fine powder yield, high sphericity degree, good fluidity, low production cost and the like.

The invention particularly relates to a steam turbine bypass system pressure control method under the emergency shutdown condition of a sodium-cooled fast reactor. The method comprises the steps that an automatic pressure reduction input signal of a steam turbine bypass system under the emergency shutdown condition of the sodium-cooled fast reactor is generated; generating and outputting a main steam header pressure set value according to an automatic pressure reduction input signal of a steam turbine bypass system under the emergency shutdown condition of the sodium-cooled fast reactor; according to the difference value between the main steam header pressure measurement value and the output main steam header pressure set value, a bypass valve position set value is calculated, and a bypass valve position control signal is generated and output to a bypass valve; and the bypass valve adjusts the valve position according to the output bypass valve position control signal. The invention further relates to a steam turbine bypass system pressure control device under the emergency shutdown working condition of the sodium-cooled fast reactor, computer equipment and storage equipment. Automatic pressure reduction of the steam turbine bypass system under the emergency shutdown working condition of the sodium-cooled fast reactor is achieved.

The application discloses a power plant multi-source waste heat collaborative recovery system and method based on slurry flashing, and relates to the technical field of energy saving of thermal power plants. The system comprises a flue gas waste heat recovery unit, a deaerator exhaust waste heat recovery unit and a continuous drainage waste heat recovery unit. The flue gas waste heat recovery unit comprises a flashing tank, a slurry inlet and outlet of the flashing tank are connected with a desulfurization tower, and a steam exhaust outlet of the flashing tank is connected with a steam collecting cylinder. The deaerator exhaust waste heat recovery unit comprises a deaerator, a deaerator steam exhaust heat exchanger and a condensate tank which are connected in sequence, and the condensate tank is connected with the flashing tank. The continuous drainage waste heat recovery unit comprises a continuous drainage flashing tank and a continuous drainage multi-stage flashing tank, and a steam exhaust outlet of the continuous drainage multi-stage flashing tank is connected with the steam collecting cylinder. The application collaboratively optimizes and recovers waste heat from different sources, effectively improves the recovery efficiency of waste heat, reduces the corrosion risk of equipment, and realizes full recovery of continuous drainage.

The invention discloses a laser welding machine and a heat dissipation system, the heat dissipation system comprises a heat dissipation loop and a refrigeration loop, and the heat dissipation loop is used for exchanging heat with a gun head; the refrigerating circuit comprises a compressor, a condenser, a throttling element, a cold plate and a heat exchanger which are sequentially communicated, the cold plate is used for being in heat conduction connection with an external heat source, a refrigerant in the refrigerating circuit exchanges heat with a heat exchange medium in the heat dissipation circuit when passing through the heat exchanger, and the heat exchanger is located between the cold plate and the compressor in the flowing direction of the refrigerant. The cooling effect on the heat exchange medium can be enhanced through heat exchange between the refrigerant and the heat exchange medium, so that the heat dissipation effect of the gun head is enhanced, the heat exchanger is arranged between the cold plate and the compressor, the superheat degree of the refrigerant before the refrigerant enters the compressor can be improved, and the risk that the superheat degree of air suction of the compressor is low is reduced.

The utility model relates to the technical field of environmental tests, in particular to an air duct structure of an environmental test box, which comprises a test box body and an air duct body arranged on one side of the test box body, and further comprises an air inlet arranged on one side of the test box body and connected with the air duct body. Air in the air duct body is guided into the test box body through the air inlet; according to the air duct structure of the environmental test box, when the air duct structure is used, compared with the prior art, under the condition of the same heat exchange area, the thickness of the condensation plate in the airflow flowing direction is reduced, the average heat exchange temperature difference between air and a refrigerant is increased, the heat exchange efficiency is improved, and the heat exchange efficiency is improved. The heat exchange efficiency of the evaporator is improved, the refrigerating capacity of a refrigerating system is fully exerted, under the condition of the same heat exchange area, the manufacturing cost of the evaporator is not changed, the efficiency is improved, the superheat degree of a refrigerant is improved, and the refrigerating system runs more stably.

The invention relates to the technical field of material surface treatment, in particular to a method for plating molybdenum on the surface of diamond powder through salt bath. By optimizing the components of the molten salt, the molten salt forms low-melting-point eutectic in the salt bath molybdenum plating process, molybdenum powder and carbon atoms on the surface of diamond are subjected to a chemical reaction at the low plating temperature to generate a uniformly-distributed molybdenum carbide layer, and heat damage to the diamond can be effectively avoided. Besides, the molten salt can form a high degree of superheat, diffusion of molybdenum atoms and chemical reaction of the molybdenum atoms and carbon atoms are facilitated, it can be guaranteed that the coating completely covers the surface of the diamond and is firmly combined, and it can be guaranteed that the thickness of the plating layer is controllable by regulating and controlling the plating time; the chlorate powder is non-toxic, harmful substances are not generated in the salt bath molybdenum plating process, the environment-friendly property is good, the chlorate powder can be used for industrial production, and the chlorate powder has wide application prospects and high engineering application value.

The invention relates to the technical field of air conditioner equipment, in particular to an air conditioner outdoor unit and an air conditioner, and aims to solve the problems that the heat exchange efficiency and stability are affected due to the fact that control over the air suction superheat degree is not accurate enough in the running process of an existing air conditioner. In order to achieve the purpose, the air conditioner comprises a shell, the shell comprises dimming glass, the dimming glass is electrically connected with a power source and a controller, and the light transmittance of the dimming glass can change along with the change of voltage; and the condenser is installed at the position, close to the dimming glass, in the shell so that sunlight can penetrate through the dimming glass to irradiate the condenser, and through the arrangement, illumination can be reasonably utilized to conduct auxiliary adjustment on the superheat degree of the refrigerant so that the superheat degree can be controlled within a reasonable range.

The invention provides a control method and device, a medium, electronic equipment, an outdoor unit and an air conditioning system.The control method comprises the following steps that when the outdoor unit runs in a heating mode and receives an operation command that a user turns off part of indoor units or turns down the air gear, the outdoor environment temperature T < outer ring > is obtained; when the obtained outdoor environment temperature Touter ring is larger than or equal to the preset heating pressure relief outer ring temperature T1, it is judged that pressure relief judgment control needs to be conducted; otherwise, judging that the system does not need pressure relief treatment and runs normally; when the outdoor unit operates in the refrigeration mode, the outdoor environment temperature Touter ring is obtained; when the obtained outdoor environment temperature Touter ring is smaller than or equal to the preset low-temperature starting environment temperature T2, it is judged that the outdoor temperature is low, and low-temperature starting preheating is conducted; otherwise, judging that the outdoor temperature is relatively high, and performing normal operation. The method is used for air supply control or pressure relief control under the refrigerating and heating conditions, stable and reliable operation of the system is ensured, and the low-temperature operation reliability is improved.

The invention provides crystallizer casting powder for continuous casting of a high-hydrogen-content medium carbon steel slab, a preparation method and application, and the crystallizer casting powder for continuous casting of the high-hydrogen-content medium carbon steel slab comprises the following components in percentage by mass: 15-22% of CaO, 30-38% of SiO2, 9-14% of Na2O + K2O, 6-9% of F, 0.5-1.5% of Li2O, 1-3% of B2O3, 4-6% of C and the balance of inevitable impurities. Moreover, the preparation method is simple, convenient to operate and suitable for industrial large-scale production, and the production cost is reduced.

This utility model discloses an oblong, flooded evaporator for refrigeration, relating to the field of evaporator technology. It aims to solve the problem that increased refrigerant charge due to increased internal space in the evaporator shell leads to liquid carryover during compressor intake, significantly affecting unit stability. The key technical features include an evaporator shell with a support bracket, an air intake port, and an adjustment port for overall internal gas regulation fixedly connected from right to left at the upper end. A liquid inlet is fixedly connected at the lower end of the evaporator shell. The evaporator shell has a waist-shaped cross-section. A left water chamber is fixedly connected to the left side of the evaporator shell, and a right water chamber is fixedly connected to the right side. This design achieves a higher superheat at the top compared to traditional air conditioners, thus improving the overall energy efficiency of the unit.

The application provides a composite medium high-temperature heat pump circulation system and method. The composite medium high-temperature heat pump circulation system comprises: a regenerator connected with a separator; a primary compressor connected with a first outlet of the regenerator and used for preliminarily compressing a nitrogen-poor gas-phase working medium; an ejector, an injection inlet of which is connected with an outlet of the primary compressor, and a material inlet of the ejector is connected with a second outlet of the regenerator; a secondary compressor connected with an outlet of the ejector; and a condenser connected with an outlet of the secondary compressor and used for heat exchange, wherein high-temperature hot water or steam generated through heat exchange is directly delivered to a next device; and supercritical fluid discharged from the condenser is returned to the regenerator for heat exchange and then reenters the separator. By introducing appropriate nitrogen into carbon dioxide as an auxiliary component, the temperature rise amplitude of the mixed working medium in the compression process can be effectively improved.