56results about How to "Guaranteed superheat" patented technology

The invention relates to a welding repairing method for aluminum parent metal, in particular to an in-situ self-propagting welding repairing method for aluminum parent metal. The method is characterized in that: self-propagting medical preparation is firstly prepared, and cleaning, oil removal, oxide film removal are carried out on parts to be welded of aluminum parent metal, then welding fluid is coated on a groove face; according to the shape and size of the groove, a mould with lower holes is made by graphite and is fixed on the upper part of the groove, and a graphite plate is clamped at the two sides of the groove by a clamping device and forms a melting chamber together with the mould, an automatic fusible plug is laid at the bottom part of the mould, then the self-propagting medical preparation is poured into the mould, pyrophoric powder is coated above the self-propagting medical preparation, after the parent metal is preheated to a certain temperature, the pyrophoric powders is lighted, thus realizing in-situ self-propagting welding repairing of the aluminum parent metal. By the method provided by the invention, intense magnetic field interference can be avoided, welding quality can be improved, labor intensity can be relieved, and the operation is easy and rapid.

The invention relates to a hot-rolled steel wire rod for a large bridge cable rope zinc-plated steel wire over the 2000 MPa level. Chemical components of the steel wire rod comprise, by weight percentage, 0.90-1.10% of C, 0.20-0.60% of Si, 0.30-0.90% of Mn, smaller than or equal to 0.010% of P, smaller than or equal to 0.005% of S, 0.10-0.40% of Cr, 0.010-0.070% of Al, 0.02-0.15% of V, smaller than or equal to 0.05% of Cu, 20-40 ppm of Ca, 20-90 ppm of N and the balance Fe and inevitable residual elements. The content of sorbite texture of the steel wire rod is larger than or equal to 95%. Thethrough ring range of the tensile strength is smaller than or equal to 70 MPa (uniformity). After the steel wire rod is subjected to drawing and zinc plating, the tensile strength of the zinc-platedsteel wire is larger than or equal to 2000 MPa, and the number of torsions is larger than or equal to 12. According to the technical flow of the steel wire rod, pretreatment of molten iron is carriedout, steel is smelted through a converter or an electric furnace, LF refining is carried out, RH degassing treatment is carried out, continuous casting of 390*510 cogged ingot is carried out, a blankis reheated, the blank is rolled, the surface of an intermediate billet is subjected to finishing, the intermediate billet is reheated, the intermediate billet is rolled, the steel wire rod is subjected to EDC water bath toughening treatment, and the steel wire rod is collected and packed.

The utility model relates to a gas-liquid separating bushing evaporator, belonging to the technical field of thermal equipment, which comprises an outer sleeve tube (12) and a plurality of torsion inner tube bundles (11) helically distributed in the outer sleeve tube as the basic heat exchanging part. One end of the inner pipe is an inlet (1) for heating liquid , while the other end is an outlet for heating liquid; the inlet (9) for evaporated liquid is arranged at the bottom of the spiral outer sleeve tube (12), and connected with a liquid phase return pipe (8) for residual evaporated liquid; a gas-collecting exhaust port (5) is communicated with a gas-collecting exhaust pipe (4) at the same location of each layer of spiral jacket; the exhaust port (5) is arranged at the upper reach of the interface of the evaporated liquid inlet (6) and the outer sleeve tube (12) to divide the whole heat exchanging part into a spiral heat exchanging section (10) and a spiral overheating section (3). The utility model also comprises a vertical type S-shaped gas-liquid separating casing evaporator. The utility model has the advantages of simple processing, better overall performance of bushing evaporative heat exchanger, less costs of the manufacture and operation of the evaporator.

The invention relates to a device and a method for continuously preparing a titanium or titanium alloy powder for 3D printing through gas atomization. The device comprises an atomization spray disc fixing top plate, an atomization spray disc, an electromagnetic shielding ring and a high-frequency induction coil from top to bottom, wherein the atomization spray disc and the fixing top plate are fixed through a fixing bolt; continuous conveying feeding holes for a titanium or titanium alloy wire material are formed in the central positions of the atomization spray disc fixing top plate and the atomization spray disc; the atomization spray disc and the electromagnetic shielding ring are coaxially installed about the axes of the conveying feeding holes; the atomization spray disc comprises a main atomization gas flow nozzle and auxiliary protection gas flow nozzles; and atomization gas flow sprayed out via the main atomization gas flow nozzle is collected on the wire material to form an atomization centre, and the atomization centre is superposed with a melting centre formed due to the heating of the high-frequency induction coil for the end part of the wire material. Therefore, melting flow is immediately limited and atomized by the main atomization gas flow after being generated, so that a superheating degree is furthest ensured, heat loss is reduced, and a high fine powder yieldof titanium or titanium alloy atomization is realized.

The invention relates to a combined cooling, heating and power device of a distributed type industrial boiler. A steam Rankine cycle system positive pressure and closed type method is adopted, a condenser of an outlet steam exhaust of a steam turbine serves as heat sources for a heating plant and an absorption refrigeration device, and therefore gradient utilization of energy sources is achieved. High quality energy of fuel is recovered for generating electricity, more than 260 KWh electric quantity can be recovered from per ton evaporation capacity (or 0.7MW heating load), at the same time, cooling and heating combination is achieved, and exhaust gas waste heat can be effectively recovered. According to a steam Rankine cycle system, waste acid and waste alkali are not produced, and the problems of oxygen corrosion and scale formation of the boiler are effectively avoided. Therefore the distributed type industrial boiler is energy-saving, environment-friendly and very remarkable in social benefits.

The invention relates to a distributed pneumatic-Rankine combined cycle combined cooling heating and power device. The distributed pneumatic-Rankine combined cycle combined cooling heating and power device is characterized in that the exhaust of a pneumatic machine is adopted as a heat source of a Rankine cycle waste heat boiler, a steam Rankine cycle system adopts a positive pressure and close type operating mode, a condenser of outlet dead steam of a steam turbine is utilized as a heat source of a heating system and an absorption refrigeration machine, and the cascading use of an energy source is realized; and high grade energy of a recycled fuel is used for generating electricity, evaporative capacity (or the heating load of 0.7 MW) of per ton can recover electric quantity which is more than 340 degrees, meanwhile, the cooling heating combination is realized, and the waste heat of fume is recovered in a high efficiency manner. A water treatment system of the steam Rankine cycle system causes no or only a little of waste acid and waste caustic to generate, and an oxygen corrosion and scaling problem of the boiler is effectively avoided. Therefore, energy conservation, environmental friendliness and social benefits are very notable.

A heat pump type closed sludge drying system comprises: a drying room (1), an upper conveyor belt (2) which is arranged on the upper part of the drying room and used for conveying sludge, and a lowerconveyor belt (3) which is arranged on the lower part of the drying room and used for conveying sludge. The heat pump type closed sludge drying system also comprises a system housing (4) at one side of the drying room (1), where the top of the drying room and the top of the system housing are connected to form an air return channel (5). A main air supply port, connected with the system housing, isformed in the side wall where the lower part of the lower conveyor belt is connected with the system housing. The system also includes a first heating circulation system, a second heating circulationsystem and an air flue circulation system that are arranged inside the system housing. The sludge drying system and the control method of same are energy-saving, environment-friendly and high-effective.

The invention relates to a supercritical carbon dioxide secondary reheat coal-fired power generation boiler system comprises a furnace and a flue, wherein the furnace is vertically arranged; the side wall of the furnace is formed by a cooling wall and a reheat wall; the cooling wall is positioned below the reheat wall; a burner is arranged in each of the middle part area and the lower part area of the cooling wall; the reheat wall comprises a primary reheat wall and a secondary reheat wall; the ground clearances of the primary reheat wall and the secondary reheat wall are equal or approximate; an overheater module and a reheater module are arranged in the flue in the flue gas flowing direction in a staged manner. The supercritical carbon dioxide secondary reheat coal-fired power generation boiler system has the benefits as follows: the reheat wall is novel in structural design, three-stage heat absorption and energy conversion are realized on the premise that the height of the furnace is not increased, and the furnace does not need to be designed as horizontal, and the energy utilization ratio is high; besides, by opening and closing appropriate valves, the specific combination manner of the primary reheat wall and the secondary reheat wall can be selected, that is, the heating surface area of the primary reheat wall and the secondary reheat wall can be adjusted, the temperature of the reheat working medium can be flexibly adjusted, and that the superheat degree of the reheat working medium reaches the standard can be ensured.

The invention discloses a regenerative and recuperative dehumidifying heat pump system. The regenerative and recuperative dehumidifying heat pump system comprises a primary evaporator, a secondary evaporator, a condenser, a compressor, a throttling valve, a dehumidifying heat exchanger, a surface air cooler, a first water pump and a second water pump, wherein the dehumidifying heat exchanger comprises a dehumidifying cooler and a dehumidifying regenerator. By the dehumidifying property of the dehumidifying heat exchanger, the evaporator and the condenser of the heat pump system are respectively used as a cold source and a heat source in a dehumidifying and regenerating process of the dehumidifying heat exchanger, continuous running of the system is realized, and functions of cooling dehumidifying in summers and heating humidifying in winters can be fulfilled. In addition, the secondary evaporator is added in the heat pump system and is used for recycling heat in regenerated air, possibility of liquid impact of the compressor can be reduced, energy can be recycled, and the regenerative and recuperative dehumidifying heat pump system is energy-saving and environmentally friendly.

The invention relates to a multifunctional cascaded steam Rankine combined cycle power generation device. A multistage cascaded mode including a high-voltage end Rankine cycle, a middle-voltage end Rankine cycle and a low-voltage end Rankine cycle is adopted, discharged latent heat of vaporization during the vapor condensation of the high-voltage end Rankine cycle and the middle-voltage end Rankine cycle is recycled efficiently and is used for electricity generating of a Rankine cycle system, load of a condenser of a traditional steam Rankine cycle system is efficiently reduced over an absolute value of 20 percent, the system optimization technology is adopted, and the cycled absolute heating efficiency of the whole system can be improved by over 5 percent. The multifunctional cascaded steam Rankine combined cycle power generation device can be used for energy conservation transformation of an existing reheat cycle steam Rankine cycle unit and can also be used for the design and construction of a new-built unit, and the economic benefit, social benefit and environmental protection benefit are remarkable.

The invention discloses a novel defrosting system and a control method thereof. The novel defrosting system comprises a compressor, a four-way reversing valve, an outdoor heat exchanger, an electronic expansion valve and an indoor heat exchanger, an air outlet and an air inlet of the compressor are connected through a second air return pipeline, and an electromagnetic valve device is arranged on the second air return pipeline. A novel defrosting method of an air conditioner includes the steps of (1) thin frost and thick frost detection and judgment, and (2) defrosting: when judgment is thin frost, adopting a thin frost removal mode, and when judgment is thick frost, adopting a thick frost removal mode. By the novel defrosting system and the control method thereof, the thin frost and the thick frost can be distinguished automatically, different defrosting modes are adopted for the thin and thick frost to allow indoor temperature to be more stable, defrosting effect is better, and waiting time of customers is shortened.

The invention relates to a steam Rankine-organic Rankine combined cycle power generation device, wherein steam in a steam Rankine cycle is cooled by an organic working medium in an organic Rankine cycle, and latent heat of vaporization of the steam in the steam Rankine cycle is recycled to be used for organic Rankine cycle power generation, so that the steam Rankine cycle and the organic Rankine cycle are combined together and an implementable combined recycling device is formed; and meanwhile, the safety difficult problem that waste heat of flue gas is recycled by the organic Rankine cycle is solved, exhaust gas temperature is effectively reduced, and low-temperature corrosion of the flue gas is avoided, and waste gas, waste water and waste heat of waste steam in a steam Rankine cycle system can be effectively recycled. The steam Rankine-organic Rankine combined cycle power generation device can be used for energy-saving reconstruction of existing units, also can be used for designing and constructing new generator units as well, and is especially suitable for new construction, extension and reconstruction of generator units in severe cold areas, water-deficient areas, power shortage areas and the like, so that economic, social and environmental-friendly benefits are remarkable.

The present invention provides a refrigerating apparatus to obtain an adequate medium pressure of the refrigerant circuit of the refrigerating apparatus and precisely obtain the effect of a split cycle, thereby enhancing the performance of the refrigerating apparatus. The refrigerating apparatus (R) in the present invention has a split cycle device, in the refrigerating apparatus (R), an operation amount of the valve open degree of a auxiliary reducing means (83) is determined by calculating and merging from a first control amount to a third control amount, wherein the first control amount isobtained based on a discharged refrigerant temperature (DT) of the compressor (11), the second control amount is obtained based on an over-compression judgment value (MPO) and a high pressure side pressure (HP), wherein the over-compression judgment value (MPO) is obtained based on an adequate medium pressure (MP) and a low pressure side pressure (LP) of the refrigerant circuit, and the third control amount is obtained by a difference between a temperature (GCT) of the refrigerant passed through the gas cooler and a temperature (LT) of the second refrigerant flow passed through the intermediate heat exchanger.

The invention belongs to the related technical field of metal surface treatment, and particularly discloses a method for strengthening a ferroalloy surface through laser melt injection. The method specifically includes the steps that lasers are used for conducting melt injection on the to-be-reinforced ferroalloy surface, and meanwhile, a paraxial powder feeding mode is adopted for injecting cBN ceramic particles into molten pool trailing, so that the cBN ceramic particles enter a molten pool through the molten pool trailing to form a cBNp/Fe melt injection layer after cooling, and the ferroalloy surface is strengthened through laser melt injection. According to the method, the paraxial powder feeding mode is adopted for injecting the cBN ceramic particles into the molten pool trailing toprevent the cBN ceramic particles from being directly oxidized and decomposed or directly sublimated under the action of the lasers, and meanwhile, the power density of the lasers, the paraxial inclination angle and the injection range of cBN ceramic are optimized to guarantee that the cBN ceramic is successfully and effectively injected into the ferroalloy surface to form the cBNp/Fe melt injection layer, so that the ferroalloy surface is strengthened.

The invention relates to an efficient low-temperature enthalpy increasing control device, which comprises a shell, the shell is divided into a heat pump system and a drying chamber, the heat pump system is communicated with the drying chamber, and gas exchange is carried out between the heat pump system and the drying chamber. The heat pump system is used for drying wet air, and the drying chamber is used for drying wet sludge. The heat pump system and the drying chamber form an air circulation, wet sludge entering the drying chamber is dried through the circulation, the moisture content of the sludge is reduced, subsequent use and recovery of the sludge are facilitated, the efficient low-temperature enthalpy increasing control device is a closed device, internal energy is isolated from the outside, heat energy is basically used for drying the sludge, the constant temperature in the device can be guaranteed, multiple times of starting of the heat pump system are reduced, energy consumption of the heat pump system is reduced, the working efficiency of the device is improved, energy leakage is reduced, the energy-saving effect is achieved, further, the structure of the efficient low-temperature enthalpy-increasing control device is simple, the device purchase cost of a user is reduced, and the use experience of the user is improved.

The invention relates to an overheating device for inlet steam of a mechanical compression type compressor. The device comprises a motor, the compressor, a separator and steam pipes, wherein the motor drives the compressor; an outlet of the separator is connected to an inlet of the compressor through one steam pipe; and one steam pipe is connected to an outlet of the compressor. The device is characterized in that an overheating steam mixer is further connected between the outlet of the separator and the inlet of the compressor; an inlet of the overheating steam mixer is connected to an upper section of the corresponding steam pipe; an outlet of the overheating steam mixer is connected to a lower section of the corresponding steam pipe; a steam reflux pipe is connected between the overheating steam mixer and the outlet of the compressor; an inlet of the steam reflux pipe is connected with the outlet steam pipe of the compressor; and an outlet of the steam reflux pipe is connected with the overheating steam mixer. According to the overheating device for the inlet steam of the mechanical compression type compressor, the structural design is scientific and reasonable, the overheating degree of the steam entering the compressor is effectively improved, damage to blades of the compressor caused by liquid entrainment is avoided, temperature real-time control is carried out through a temperature sensor, and thus efficient utilization of energy is guaranteed.

The invention relates to an Fe-Al-Cr blocky nanocrystalline material and a preparation method thereof. The Fe-Al-Cr blocky nanocrystalline material comprises the following components in percentage by weight: 9.8 to 14 percent of Al, 60 to 85 percent of Fe and 0 to 30 percent of Cr. The preparation method comprises the following steps of: weighing corresponding components in percentage by weight, mixing the weighed powder for 16h, then putting the well-mixed reactant in a copper die, compacting under the pressure of 60MPa, putting an ignition agent on the surface of the reactant, then reacting in a reaction vessel, introducing argon at room temperature, isothermally heating to 180 DEG C and exhausting again, then introducing argon under the pressure of 8MPa and continuously heating the vessel; beginning to react the ignition agent and releasing a great deal of heat when the temperature in the vessel reaches about 260 DEG C, thereby initiating the reaction among materials; and cooling the generated product to the room temperature along with a furnace so as to prepare the alloy.