37results about How to "Low circulation resistance" patented technology

The invention discloses a high-gradient internal circulation oil cooling iron remover which comprises a magnetic system coil (4), an internal circulation oil path system (3), an external cooling system (2) and an expansion tank (1), wherein the magnetic system coil (4) is used for generating an excitation magnetic field which realizes the iron sucking function of the iron remover; the magnetic path of the magnetic system coil (4) is in an opened magnetic path structure; the internal circulation oil path system (3) is used for distributing, collecting and circulating transformer oil; the external cooling system (2) is used for radiating the heat of the transformer oil so as to realize the heat radiation balance in the high-gradient internal circulation oil cooling iron remover; and the expansion tank (1) is used as a compensation container for the transformer oil expansion when equipment operates. By adopting the internal circulation structure, the external circulation pipeline is simplified, the oil path circulation resistance is reduced, problems that an oil path is complexly arranged with interference, the circulation efficiency is low, a welding spot has leakage and the like are avoided, the normal operation of the iron remover is ensured, and the iron removing efficiency is improved.

A Hot pump sludge dryer for pre-cooling an evaporator relates to sludge drying equipment. The problems that inner circulating air of a system cannot be pre-cooled and cooled by utilizing outdoor air in the existing hot pump sludge drying technology so as not to reduce operation energy consumption of the hot pump and improve the dehumidification rate are solved. The dryer comprises a drying chamber, a hot pump system, a heat returner, cooling equipment, an air feeding machine and a condensed water collection and drainage device, wherein an evaporator and a condenser in the hot pump system are positioned in an air circulating pipeline enclosed by the dryer; hot end inlet air of the heat returner is delivered by a filter in the drying chamber; a hot end outlet air of the heat returner is fed to the cooling equipment; cold end inlet air of the heat returner is delivered by the evaporator, and cold end outlet air of the heat returner is fed to the condenser; the cooling equipment is positioned at the front end of the hot pump evaporator; the air feeding machine is positioned behind the condenser and the circulating air is pressurized and fed to the drying chamber; and the condensed water collection and drainage device is positioned below the heat returner, the cooling equipment and the evaporator. The dryer is used for drying the sludge.

The invention provides a dedicated anti-scale agent for a sulfate section of a salt and sulfate co-production system. The dedicated anti-scale agent is prepared by mixing sucrose phosphate, sodium gluconate, a tartaric acid-malic acid-sodium hypophosphite telomer and purified water according to a certain proportion. Being added into a sulfate section mother liquid of the salt and sulfate co-production system, the anti-scale agent can effectively prevent Ca<2+> and Mg<2+> from generating non-soluble salt crystals, so as to avoid scaling, causing reduction of heat-transfer property and evaporation efficiency, of Ca<2+> and Mg<2+> in sulfate producing equipment, reduce cleaning frequency, remarkably prolong the operation cycle of the sulfate producing equipment, improve sulfate producing efficiency, and improve the quality level of a sulfate product. Moreover, the anti-scale agent can form a corrosion-resistant protecting film on the metal surface of the equipment, so as to reduce corrosion of the mother liquid to the sulfate producing equipment. Adoption in sulfate producing equipment in five salt and sulfate co-production enterprises in China shows that the effects of energy conservation, scaling prevention, stable yield and quality improvement are excellent.

A natural-circulation self-cleaning evaporation device is disclosed. A steel wire screw is mounted in an uplink heating pipe; a twisted strip screw is mounted in a downlink heating pipe. Fluidization balls are added into a circulation solution to realize high-efficient cleaning by the fluidization balls with a low concentration of 0.1%-3.0% in a spiral fluidization state. A boiling pipe is disposed above a heating chamber, is trumpet-shaped, prevents fluidization ball obstruction by adopting a converged section and a gradually-expanded section, and reduces the circulation resistance and the outlet kinetic energy loss. A shunting skirt is designed at the lower end of a lower pipe plate of the heating chamber. The circulation solution flowing downwards is shunted into a circulation main flow and a circulation auxiliary flow before the shunting skirt; the circulation auxiliary flow flows into and stirs the fluidization balls to form a fluidization state when passing through sieve pores on a sieve plate, which allows the fluidization balls to flow into the uplink heating pipe uniformly and smoothly, so as to realize natural circulation flow of the fluidization balls. The spiral-fluidization self-cleaning evaporation device can not only realize natural circulation, but also realize high-efficient automatic cleaning, is reliable in operation, simple in maintenance, and thus can realize both great yield increase and energy saving.

The invention discloses an upper bearing component and a guide rail system. The upper bearing component comprises an upper bearing substrate and an embedding plate, wherein the embedding plate is fixed on the upper bearing substrate and extends along the length direction of the upper bearing substrate; the outer side surface of the embedding plate is a contact surface for being contacted with the rolling surfaces of rolling bodies; the hardness of the embedding plate is more than or equal to 65HRC. The upper bearing component and the guide rail system provided by invention have the advantages that the design of adding the embedding plate on the upper bearing substrate is adopted, the hardness of the embedding plate is reasonably arranged, and the contact surface of the embedding plate is contacted with the rolling bodies, so that the conact area between the upper bearing substrate and the rolling body can be reduced, the service life of the upper bearing substrate is prolonged, the bearing capability also can be improved, the processing is also convenient, and the manufacturing cost is conveniently reduced; due to adoption of the design of concave parts and supporting shoulder parts, the friction force between the rolling bodies and an upper rolling track can be reduced, so that the circular resistance of the rolling bodies is reduced; since the design of arc-shaped end parts is adopted on a carrying plate, the rolling smoothness of the rolling bodies is improved, so that the reliability of operation of the guide rail system is improved.

The invention relates to a high-gradient internal circulation oil cooling iron remover, which comprises a magnetic coil (4), an internal circulation oil path system (3), an external cooling system (2) and an oil conservator (1), wherein the magnetic coil (4) is used for generating an excitation magnetic field capable of realizing the iron absorption effect of the iron remover; the magnetic circuit of the magnetic coil (4) is an opened magnetic circuit structure; the internal circulation oil path system (3) is used for distributing, collecting and circulating oil of a transformer; the external cooling system (2) is used for dissipating heat of the oil of the transformer so as to realize internal heat dissipation balance of the high-gradient internal circulation oil cooling iron remover; and the oil conservator (1) is used as a complementary container when oil in the transformer is inflated in the event of operating equipment. By adopting the internal circulation structure, the high-gradient internal circulation oil cooling iron remover disclosed by the invention is capable of simplifying external circulation pipelines, reducing oil path circulation resistance, avoiding the problems of being complex and interferential in oil path arrangement, low in circulation efficiency, leaked in welding spot and the like, ensuring the iron remover to work normally, and increasing the iron removing efficiency.

The invention discloses air-conditioning and refrigeration equipment. The air-conditioning and refrigeration equipment comprises a compressing mechanism, a user side heat exchanger, a heat source side heat exchanger, a heater, a first throttle mechanism, a second throttle mechanism, a first flow direction control valve and a second flow direction control valve. The outlet end of the heater passes through the second throttle mechanism and a sixty-fifth pipe in sequence and is connected with either of two connection ports of the heat source side heat exchanger. The other connection port of the heat source side heat exchanger is connected with either of two connection end points of the first flow direction control valve through a seventieth pipe. One end of the second flow direction control valve is connected with a pipe between the outlet end of the heater and the second throttle mechanism, and the other end of the second flow direction control valve is connected with the seventieth pipe. The inlet end of the first throttle mechanism is connected with the sixty-fifth pipe through a sixty-sixth pipe. The air-conditioning and refrigeration equipment is simple in structure, reliable in work, low in cost and capable of achieving multiple functions such as refrigeration, heating and hot water production.

The invention discloses a steam and water separation device for a steam dome, and the device provided by the invention comprises a primary separation device and a secondary separation device, wherein the primary separation device is arranged on the mouth of an ascending tube used for inputting a steam and water mixture in a steam dome body; and the secondary separation device is arranged on the mouth of a steam extraction tube for outputting gas in the steam dome body. The device has a simple structure and is convenient to manufacture, install and overhaul; meanwhile, good water circulation working condition can be guaranteed, and overlarge circulation resistance can be avoided; and in addition, the device can effectively carry out steam and water separation so as to lower the tube explosion possibility of the superheater, and satisfies the operation reliability of the boiler and user requirements.

The invention relates to the technical field of vehicle cooling systems and particularly relates to a vehicle cooling system and a control method thereof as well as a vehicle provided with the system. The vehicle cooling system comprises a water pump, a heat radiator, an engine water jacket and a hydraulic retarder, wherein a cooling circuit is formed by connecting the heat radiator, the water pump and the engine water jacket in series; a cooling water path of the hydraulic retarder is connected with the engine water jacket in parallel; and an adjusting valve is arranged among the water pump, the hydraulic retarder and the engine water jacket and is used for adjusting the quantity of water which is introduced into the hydraulic retarder and the engine water jacket by the water pump. The cooling capability of the vehicle cooling system is improved; and furthermore, the braking efficiency of the hydraulic retarder is improved.

The invention provides a system for evaporating liquefied natural gas by utilizing an intermediate medium. The system comprises an upper part cavity and a lower part cavity which are communicated with each other, wherein the upper part cavity internally comprises a heat exchange relation of the intermediate medium and the liquefied natural gas, the lower part cavity internally comprises a heat exchange relation of a second medium and the intermediate medium, the intermediate medium in a steam form is raised to the upper part cavity to perform heat exchange with the liquefied natural gas, and simultaneously, condensation is performed to the intermediate medium in the steam form. The invention also provides a method for evaporating the liquefied natural gas by utilizing the intermediate medium. The method comprises the steps of: heating the liquefied natural gas by utilizing the intermediate medium, utilizing water with normal temperature as the second medium to heat the intermediate medium, and utilizing the generated intermediate medium in the steam form for heating the liquefied natural gas, therefore, additional condensation equipment is not needed for performing temperature reduction to the intermediate medium in the steam form, circulating resistance of the intermediate medium is reduced and the energy efficiency is improved.

The invention provides a front water circulation heat exchange solar water heating engineering system which comprises a water consumption pond, a coarse filter screen, a circulating pump, a heat absorbing plate, a water distributor, a water collecting tank and a fine filter. The water consumption pond is connected with the coarse filter screen by a first pipeline, and the coarse filter screen is further connected with the circulating pump by a second pipeline; the circulating pump is connected with the water distributor by a third pipeline, and the water distributor is positioned above a high-end water inlet of the heat absorbing plate; the heat absorbing plate is positioned at a high location with sufficient illumination; the water collecting tank is positioned below a low-end water outlet of the heat absorbing plate and is further connected with the fine filter by a fourth pipeline, and the fine filter is further connected with the water consumption pond by a fifth pipeline. The front water circulation heat exchange solar water heating engineering system has the advantages that the integral system is simple in structure and high in heat efficiency; water is low in circulating resistance, high in circulating strength and low in required water pump lift and motor power; the front water circulation heat exchange solar water heating engineering system is low in engineering manufacturing cost and system running cost and can be easily accepted.