76results about How to "Does not affect heat transfer" patented technology

The invention relates to a nickel-base protection coating of a boiler heat exchange pipe, and a preparation method thereof which belong to the technical field of corrosion prevention of heat exchangepipes. The nickel-base protection coating of the boiler heat exchange pipe is prepared from the following components in percentage by mass: 50 percent to 58 percent of Ni, 19 percent to 24 percent ofCr, 2 percent to 6 percent of Mo, 3 percent to 6 percent of Fe, 1 percent to 4 percent of Nb, 0.3 percent to 0.7 percent of Mn, 0.8 percent to 1.2 percent of Ti, 0.9 percent to 1.2 percent of Co, 0.7percent to 1.1 percent of B, 0.8 percent to 1.2 percent of Si, 2 percent to 5 percent of Al, 0.09 percent to 0.11 percent of C, and 3 percent to 7 percent of W. The coating provided by the invention has a small influence on heat exchange of a base body, high bonding strength, and good corrosion resistance, so that the boiler heat exchange pipe has excellent corrosion resistance, the service life of the boiler heat exchange pipe can be effectively prolonged, and the use cost of a boiler is reduced; and meanwhile, the coating provided by the invention is simple in preparation process, high in practicability and high in high performance cost ratio.

The invention discloses a multi-station automatic thermal transfer printer, which is characterized by comprising a machine table, a material conveying mechanism, a heat transfer printing mechanism, a receiving and emptying mechanism, a control mechanism, a safety grating, and an alarm in signal connection with the safety grating, wherein the material conveying mechanism comprises an index plate and a carrying station arranged on the front of the index plate; and the heat transfer printing mechanism comprises a heating plate, a cylinder which drives the heating plate to move up and down, and a temperature controller which controls the temperature of the heating plate. The multi-station automatic thermal transfer printer has the beneficial effects that the materials are conveyed through the index plate, the thermal transfer printing operation is not influenced by feeding and discharging, the thermal transfer printing step is compact, and the working efficiency is improved; according to the safety grating and alarm, an alarm is given in the first time when a fault occurs, so that the fault is conveniently discovered and treated by a worker, and the time is saved; and moreover, operation of other mechanisms is controlled by the control mechanism, so that the degree of automation is greatly improved, and ordered and stable operation between processes is guaranteed.

A wet-film surface air cooler of a composite structure comprises a plurality of fins and a plurality of heat-exchanging pipes, wherein the fins are arranged in parallel at intervals and the heat-exchanging pipes penetrate through the fins. A wet-film layer is arranged on the surfaces of the fins. At least one water absorption belt is extended outwards from the wet-film layer and is used for leading water into the wet-film layer. The wet-film surface air cooler of the composite structure is simple in structure, low in cost, free of power and high in reliability. On one hand, the heat-dissipation efficiency and the COP of condensate water or tap water applied to the surface air cooler of an air conditioner are improved, the air-discharging pressure is reduced when the air conditioner is used for cooling, the COP of a common air cooling air conditioner used for cooling is increased from 3.2 to 4.1, energy is saved by over 30%, and on the other hand, the surface air cooler of the air conditioner is prevented from being frosted in winter.

The invention discloses a finite element thermal analysis equivalent method for contact resistance of a ground wire and pre-twisted wire contact port. The method comprises the steps of firstly obtaining a resistance value of the contact resistance of the overhead ground wire and pre-twisted wire contact port through an experiment; performing calculation to obtain a contact area corresponding to the contact resistance; according to the contact resistance and the contact area, calculating out thermal flow density; building three-dimensional models of a ground wire and a pre-twisted wire, and loading the calculated thermal flow density at the contact area of the contact port; and finally, designing a large-current temperature rise experiment, and verifying a finite element simulation result.The method avoids modeling requirements on a complex contact interface in finite element simulation, and has significance of general popularization and use.

The invention provides an integral kitchen air conditioner, and relates to the technical field of air conditioners. In order to simplify installation and maintenance, lower the cost and avoid soot inside a kitchen, the integral kitchen air conditioner comprises a shell and a filter component, the interior of the shell is divided into an evaporation chamber and a condensation chamber through a partition plate, the evaporation chamber is provided with an air inlet and an air outlet, an air flue is formed between the air inlet and the air outlet, and a fan and an evaporator are arranged inside the air flue; the filter component is arranged between the air inlet and the evaporator, and the filter component can filter soot entering air inside the shell from the air inlet. The integral kitchen air conditioner is used for air conditioner manufacturing.

The invention discloses a boiler for derived fuel RDF, waste plastics RPF and waste wood of combustion of refuses, mainly comprising a hearth, a burnout chamber, a superheater chamber and a rear flue duct, wherein the burnout chamber, the superheater chamber and the rear flue duct are successively connected behind the hearth; a drum is arranged above the hearth, and a reverse chain fire grate is arranged on the lower part of the hearth; slag trapping and ash discharging equipment is arranged below the reverse chain fire grate; the front wall of the lower part of the hearth is provided with a waste wood spray seeding device and a refuse derived fuel RDF and waste plastics RPF spray seeding device which are communicated with the inner part of the hearth, and the waste wood spray seeding device is arranged below the refuse derived fuel RDF and waste plastics RPF spray seeding device. In the invention, the steam produced by using refuse derived fuel RDF, the waste plastics RPF and the waste wood to be combusted in a boiler is used for generating electricity and supplying steam. The invneiton has the social benefit of saving energy and reducing environmental pollution and has favourable economic benefit.

The invention discloses a self-cleaning type low-temperature flue gas heat exchanger which comprises a flue gas inlet, a flue gas outlet, a water outlet, a water inlet, a coil and a support. A winding pipe fin has a polytetrafluoroethylene coating, the polytetrafluoroethylene material has the advantages of high acid-base corrosion resistance, high-low temperature resistance, smooth and non-sticky surface and the like, the self-cleaning type low-temperature flue gas heat exchanger is used for a low-temperature flue gas recycling system with the temperature lower than or equal to 350 DEG C, the system scaling blocking resistance is good, and the corrosion resistance is high.

The invention relates to an ethylene oligomerization method. The method comprises the following steps: (a) placing an inner kettle in a reactor, wherein the outer wall of the inner kettle is matched with the inner wall of the reactor; (b) adding a reaction solvent into the inner kettle, setting the reaction temperature to be 0 to 40 DEG C, controlling the reaction pressure to be in a range of 0 to 6 MPa through a pressure reducing valve; (c) introducing an ethylene-containing raw material flow into the reaction solvent to carry out reactions; (d) stopping the reaction, and discharging the reaction fluid. When wall hanging in the inner kettle reaches a certain degree, the inner kettle can be rapidly exchanged, thus next reaction can be carried out immediately, the reactors with the wall hangings do not need to be washed during the industrial production process, a lot of time and labor are saved, time and cost are reduced, and the production efficiency is improved. Nonconventional high-efficient method can be conveniently used to wash the polymers in the wall hangings in the replaced inner kettles, the method utilizing a large amount of solvent to wash the polymer is abandoned, and thus the solvent consumption is greatly reduced.

This invention relates to a preparation method for anti-corrosion films on metal surfaces characterizing in improving a high temperature water-heating method by applying Na-Ca glass as a main Si source, LiBr solution as the Si solvent and an activation agent of metal base as well, therefore, the activation of the metal base and the SiO2 deposition are carried out at the same time, and film composition can be interluded effectively, successive heat treatment is not necessary and an inorganic heat-preservation and anti-corrosion film is prepared. The main components of the film are SiO2 and oxide of Fe and Cr and oxidation films of different components can be prepared by adjusting the activation speed of the base and deposition speed of Si.

The invention relates to a display cabinet comprising a cabinet body. The bottom of the cabinet body is provided with a condenser; the display cabinet further comprises an automatic condenser cleaningdevice and a surface condensate removal door structure; the automatic condenser cleaning device comprises a brush component and a connecting rod component, and the brush component is arranged on theside face of the condenser movably, and is in contact with the surface of the condenser for cleaning the condenser; one end of the connecting rod component is connected with the brush component, and the other end of the brush component is connected with a lower door frame of a cabinet door, so that the brush component is driven by a lower door frame through the connecting rod component to move back and forth on the surface of the condenser for cleaning when the cabinet door is opened and closed; the surface condensate removal door structure comprises a door frame and door glass, and the door glass is arranged in the door frame which is further provided with a heating part internally; and the heating part is connected with a power supply, and used for heating the door frame after power-on so that the temperature of the door frame rises for avoiding formation of condensate water. The display cabinet has the advantages of a good refrigeration effect, convenient installation, the simple structure and the beautiful cabinet body.

The invention relates to a display cabinet comprising a cabinet body. The bottom of the cabinet body is provided with a condenser; the display cabinet further comprises an automatic condenser cleaningdevice and a surface condensate removal door structure; the automatic condenser cleaning device comprises a brush component and a connecting rod component, and the brush component is arranged on theside face of the condenser movably, and is in contact with the surface of the condenser for cleaning the condenser; one end of the connecting rod component is connected with the brush component, and the other end of the brush component is connected with a lower door frame of a cabinet door, so that the brush component is driven by a lower door frame through the connecting rod component to move back and forth on the surface of the condenser for cleaning when the cabinet door is opened and closed; the surface condensate removal door structure comprises a door frame and door glass, and the door glass is arranged in the door frame which is further provided with a heating part internally; and the heating part is connected with a power supply, and used for heating the door frame after power-on so that the temperature of the door frame rises for avoiding formation of condensate water. The display cabinet has the advantages of a good refrigeration effect, convenient installation, the simple structure and the beautiful cabinet body.

The invention discloses an air source heat pump based on the concept of energy saving and environmental protection, which comprises an outer case, an inner case, an evaporator, a gas-liquid separator, an air compressor, a liquid storage tank, a condenser, a dry filter, an expansion valve, a first Circulating water pump, first solenoid valve, second circulating water pump, second solenoid valve, third solenoid valve, stepping motor and electric push rod, the inside of the outer case is fixed with an evaporator by screws, and one end of the evaporator A gas-liquid separator is connected through a pipeline, and the other end of the evaporator is connected with an expansion valve through a pipeline, the other end of the gas-liquid separator is connected with an air compressor through a pipeline, and the other end of the air compressor is connected through a pipeline There is a condenser, and the top of the condenser is provided with a first water delivery pipe. The invention has a sunshade and heat preservation structure, which can prevent summer sun exposure, improve summer cooling effect, and simultaneously prevent the problem of frosting of the evaporator in winter.