HVDC transformers are key components of HVDC stations. HVDC converter and inverter stations terminate long-distance DC transmission lines or DC sea cables. This type of transformer provides the interface between AC grids and high power rectifiers and are used to control the load flow over the DC transmission lines. These actors adapt the AC grid voltage to an adequate level which is suitable for feeding the valve system of DC converter and inverter. Design options The design concept of HVDC transformers is mainly influenced by the rated voltage, rated power and transportation requirements like dimensions, weight and mode of transportation. Many large power HVDC converter station are located in rural areas of low infrastructure. Frequently, special geometrical profiles have to be fulfilled in order to move such transformers by railway. Typically, HVDC transformers are single phase units containing 2 winding limbs. This concept can include either 2 parallel valve windings (two for delta or two for wye system, fig. 5.8-1) or two different valve windings. In order to reduce the total transportation height frequently the core assembly includes 2 return limbs. Due to redundancy requirements in HVDC stations 3 phase units are quite uncommon. The valve windings are exposed to AC and DC dielectric stress and therefore a special insulation assembly is necessary. Furthermore, special lead systems connecting the turrets and windings have to be installed in order to withstand the DC voltage of rectifier. Additionally, the load current contains harmonic components of considerable energy resulting in highe r losses and increased noise. Above all, special bushings are necessary for the valve side to access upper and lower winding terminals of each system from outside. Conclusively, two identical bushings are installed for star or delta system. For approving the proper design and quality of manufacturing special applied DC and DC polarity reversal tests have to be carried out. The test bay has to be equipped with DC test apparatus accordingly and needs to provide adequate geometry to withstand the DC test voltage. HVDC Transformers react as coupling elements between the connected AC grids and high power rectifiers, and are necessary for adapting the voltage. They insulate the rectifier itself from the AC grid and generate a phase shift. New HVDC applications are seen between existing, well-established networks. A back-to-back link can easily combine two different AC networks together, even with different frequencies. Such solutions can also help customers to strengthen and optimize their networks. The changing environment provides more and more opportunities to HVDC solutions, and Siemens is prepared to provide its customers with either our solution or with converter transformers as a loose component .
Sic heating element,sic heater,silicon carbide heating element,mosi2 heating element,mosi2 heater,molybdenum disilicide heating element.
Parameters of Automatic Feeding Induction Heating Equipment: Max power: 80kw Oscillating frequency: 10-35KHZ Maximum input current: 120A Input voltage: 380V, 3 phases, 50-60Hz Generator Sizemm):720*520*1050 Transformer Size(mm):780*480*550 Generator Weight80kg Transformer Weight110kg Main features of Automatic Feeding Induction Heating Equipment: 1.Digital phase lock: Digital Phase Lock Technology to realize frequency auto-tracking. 2.Modular design: imported power devices and modular design to guarantee equipment reliability and convenient maintenance. 3.Technology of resonance frequency conversion: employ resonance frequency conversion to achieve a whole equipment efficiency of 90% or over. 4.light in weight, concise in size and convenient in application. 5.User-friendly design: easy adjustment-free installation and application -
Paper making machine is the general name of a complete set of equipment that makes the pulp form the paper web. It includes the headbox, wire section, press section, drying section, calender, paper reel, and transmission section. , Vacuum, lubrication, heat recovery and other auxiliary systems. Toilet paper roll machine makes paper pulp water suspension that meets the requirements of papermaking through the processes of filter dehydration forming, mechanical extrusion dehydration and drying. The tissue paper making machine production line includes the three main parts of forming, pressing and drying to complete the above process, and is equipped with the necessary finishing, coiling and transmission devices, as well as the circulation of pulp, pulp and white water, vacuum, ventilation and exhaust. Paper handling and lubrication, automatic control and other auxiliary systems. The specifications of the paper machine are often expressed in terms of the paper width (referred to as the paper width), the width of the copper net and the optimal working speed. The cutting width of modern large paper machines can reach 11m, the working speed can reach 1000m/min or more, the daily output of paper can reach hundreds of tons, and the weight of the whole machine can reach more than 1,000 tons, which is more than 100 meters long. In general developing countries and in the production of some special papers, small paper machines are more commonly used, with a width of 1 to 3 m and a working speed of tens of meters to 200 meters per minute.
Paper making machine is the general name of a complete set of equipment that makes the pulp form the paper web. It includes the headbox, wire section, press section, drying section, calender, paper reel, and transmission section. , Vacuum, lubrication, heat recovery and other auxiliary systems. Roll paper machine makes paper pulp water suspension that meets the requirements of papermaking through the processes of filter dehydration forming, mechanical extrusion dehydration and drying. The paper craft /toilet machine includes the three main parts of forming, pressing and drying to complete the above process, and is equipped with the necessary finishing, coiling and transmission devices, as well as the circulation of pulp, pulp and white water, vacuum, ventilation and exhaust. Paper handling and lubrication, automatic control and other auxiliary systems. The specifications of the paper machine are often expressed in terms of the paper width (referred to as the paper width), the width of the copper net and the optimal working speed. The cutting width of modern large paper machines can reach 11m, the working speed can reach 1000m/min or more, the daily output of paper can reach hundreds of tons, and the weight of the whole machine can reach more than 1,000 tons, which is more than 100 meters long. In general developing countries and in the production of some special papers, small paper machines are more commonly used, with a width of 1 to 3 m and a working speed of tens of meters to 200 meters per minute.
Non woven abrasives are used for industrial quality non woven nylon, impregnated throughout with abrasive grain and bonded with heavy duty resins. High flexibility required for many cleaning, blending, finishing and polishing application. Designed for general cleaning, light deburing, blending, and satin finishing on all types of ferrous and non ferrous metals. Their open structure prevents loading and they can be used wet or dry. Rolls can be cut to pad for hand use or machine use.
Lijia has developed a new generation of HVAF supersonic flame spraying system. Currently, it has 2 invention patents and 36 utility model patents in the field of thermal spraying equipment development. Its fuel requires only propane and compressed air, and it can be used with a variety of spray guns to accommodate spraying materials with different melting points, as well as peripheral auxiliary equipment.For example: spray room, manipulator, turntable fixture, dust removal system and other automatic production lines, in order to improve the processing efficiency and quality stability of products. Features of the equipment: Full closed-loop automatic control system, touch screen operation, digital monitoring, imported control valves, process formula storage and call, multi-level login rights, secure interlock and peripheral interface. Very low layer porosity: The spray gun coating has an extremely low porosity, typically between 0.1 and 0.3 percent High deposition efficiency: Powder size: 5-30 m,15-45 m (HVOF mode) Powder feeding efficiency: 0.26kg/h, deposition rate: over 50% (different materials) Low use cost: The overall use cost is relatively low because of high deposition efficiency and high powder feed rate and low gas cost
Wine bottle auto-frosting production line is our new product which combines chemical frosting technology with mechanical automation perfectly; it can meet the needs of wine bottle industry home and abroad. Type: ykg-001 Specification: 25m *1.3m *1.7m Daily output: 5000/h(take 500ml common white wine bottle as example) General information: 1 completely automatic 2.Stable and durable. 3.Power: 3kw.H(non-constant)
Our products extend to cover standard, non-standard pcbn integral blade series, pcbn/pcd integral composite blade series, pcbn/pcd brazed shank tool series, and a number of categories such as nc cutter bar and facing cutter, which have been applicable to a large number of sectors prioritized by the state such as aerospace components manufacturing, auto parts manufacturing, wind power generation, machine tool building and metallurgy.
Silica brick is a refractory product containing SiO2 as a main component. Its SiO2 content is generally not less than 93%. Silica brick is an acidic refractory material. It has strong resistance to acid slag and good resistance to oxides such as CaO, FeO and Fe2O3. However, it has poor resistance to alkaline slag erosion and is easily oxidized by Al2O3, K2O and Na2O. Destruction by the action of matter. The softening temperature of the silicon brick load is as high as 1640~1680�°C, and the long-term use volume is stable under high temperature. However, silica bricks have poor thermal shock resistance and high refractoriness. When using silica bricks, pay attention to two points: when the silica brick is at 200~300�°C and 573�°C, the volume suddenly expands due to the crystal transformation. Therefore, the temperature rise below 600 �°C in the oven should not be too fast, when it is cooled to below 600 �°C. Dramatic temperature changes should be avoided; as far as possible not in contact with the alkaline slag. Application Coke oven, Hot blast stoves, Crown or Superstructure of glass furnace.
The most advanced water pump control valve Tube force is a newly product of the third generation hydraulic control valve, is a kind of butterfly type multi-function control valve. The valve is adopted with flow design, low energy consumption, reliable performance, and good sealing performance. It has the function of both electric gate valve, electric butterfly valve and control valve, fast closing speed and adjustable pressure relief time, can effectively eliminate water hammer damage, protect the safety of the pump and the pipeline system. The valve is mainly installed on outlet pipeline of the centrifugal pump, mixed flow pump and axial flow pump, the valve is designed with diaphragm type and piston type, can be separately applied to clean water, raw water, sewage and slurry water medium, the valve can feedback the valve operation condition in real time through auxiliary components, achieve automatically control and remote detection for remote distance transportation engineering. There are five types such as common type, back water type and low voltage type to meet different customer's requirement. Because of the valve structure is compact, small size and light weight, the valve is very suitable to large size pipelines. The valve is Widely used in electric power, metallurgy, municipal, environmental protection, food industry supply, draina ge system, sewage pumping stations, chemical delivery system. It is a new type of pumping station with the newest structure, the
The most advanced water pump control valve Tube force is a newly product of the third generation hydraulic control valve, is a kind of butterfly type multi-function control valve. The valve is adopted with flow design, low energy consumption, reliable performance, and good sealing performance. It has the function of both electric gate valve, electric butterfly valve and control valve, fast closing speed and adjustable pressure relief time, can effectively eliminate water hammer damage, protect the safety of the pump and the pipeline system. The valve is mainly installed on outlet pipeline of the centrifugal pump, mixed flow pump and axial flow pump, the valve is designed with diaphragm type and piston type, can be separately applied to clean water, raw water, sewage and slurry water medium, the valve can feedback the valve operation condition in real time through auxiliary components, achieve automatically control and remote detection for remote distance transportation engineering. There are five types such as common type, back water type and low voltage type to meet different customer's requirement. Because of the valve structure is compact, small size and light weight, the valve is very suitable to large size pipelines. The valve is Widely used in electric power, metallurgy, municipal, environmental protection, food industry supply, draina ge system, sewage pumping stations, chemical delivery system. It is a new type of pumping station with the newest structure, the
Dibenzothiazole disulfide Cas no: 120-78-5 Specification: no. Itemunitspecification 1appearance light-yellow powder 2initial m. P. (min)c162.0 3loss on drying (max)%0.40 4ash (max)%0.50 5residues on 63um sieve (max)%0.50 6oil content (*)%0; 1.0--2.0 Properties: a little bitter taste. Specific gravity: 1.50--1.59. Soluble in chloroform, toluene, benzene, carbon tetrachloride. Insoluble in water and ethyl alcohol. Application: given flat, moderately fast cures in nr and sr. Also used in a wide range of general purpose rubber. Non-staining/non-discolouring in "white" socks; use as a plasticiser and/or retarder in polychloroprene rubber. Secondary acceleration is usually required for synth etic polymers. Better scorch safety than mbt. Storage: keep container tightly closed in a cool, well-ventilated place. The recommended max. Storage life is 2 years when stored under normal conditions. Packaging: 20kg bag.
Fresh Healthy Vending is a pioneer within the vending industry, paving the way to healthier drinking and living by offering convenient, affordable and healthy fresh squeezed orange juice in healthy vending machines available around the globe. We have the most reliable technology and software to offer the most intelligent orange juice vending machine. Non stop research team for new generation juice vending machine with muti choice of fruit and more automatic. As a motivated Fresh Healthy Vending Franchisee, you can make a difference by filling the massive, growing demand for convenient, healthy drinking.
Fresh Healthy Vending is a pioneer within the vending industry, paving the way to healthier drinking and living by offering convenient, affordable and healthy fresh squeezed orange juice in healthy vending machines available around the globe. We have the most reliable technology and software to offer the most intelligent orange juice vending machine. Non stop research team for new generation juice vending machine with muti choice of fruit and more automatic. As a motivated Fresh Healthy Vending Franchisee, you can make a difference by filling the massive, growing demand for convenient, healthy drinking.
A PIONEER IN THE VENDING INDUSTRY Fresh Healthy Vending is a pioneer within the vending industry, paving the way to healthier drinking and living by offering convenient, affordable and healthy fresh squeezed orange juice in healthy vending machines available around the globe. We have the most reliable technology and software to offer the most intelligent orange juice vending machine. Non stop research team for new generation juice vending machine with muti choice of fruit and more automatic. As a motivated Fresh Healthy Vending Franchisee, you can make a difference by filling the massive, growing demand for convenient, healthy drinking.
Fresh Healthy Vending is a pioneer within the vending industry, paving the way to healthier drinking and living by offering convenient, affordable and healthy fresh squeezed orange juice in healthy vending machines available around the globe. We have the most reliable technology and software to offer the most intelligent orange juice vending machine. Non stop research team for new generation juice vending machine with muti choice of fruit and more automatic. As a motivated Fresh Healthy Vending Franchisee, you can make a difference by filling the massive, growing demand for convenient, healthy drinking.
Fresh Healthy Vending is a pioneer within the vending industry, paving the way to healthier drinking and living by offering convenient, affordable and healthy fresh squeezed orange juice in healthy vending machines available around the globe. We have the most reliable technology and software to offer the most intelligent orange juice vending machine. Non stop research team for new generation juice vending machine with muti choice of fruit and more automatic. As a motivated Fresh Healthy Vending Franchisee, you can make a difference by filling the massive, growing demand for convenient, healthy drinking.
Fresh Healthy Vending is a pioneer within the vending industry, paving the way to healthier drinking and living by offering convenient, affordable and healthy fresh squeezed orange juice in healthy vending machines available around the globe. We have the most reliable technology and software to offer the most intelligent orange juice vending machine. Non stop research team for new generation juice vending machine with muti choice of fruit and more automatic. As a motivated Fresh Healthy Vending Franchisee, you can make a difference by filling the massive, growing demand for convenient, healthy drinking.
Fresh Healthy Vending is a pioneer within the vending industry, paving the way to healthier drinking and living by offering convenient, affordable and healthy fresh squeezed orange juice in healthy vending machines available around the globe. We have the most reliable technology and software to offer the most intelligent orange juice vending machine. Non stop research team for new generation juice vending machine with muti choice of fruit and more automatic. As a motivated Fresh Healthy Vending Franchisee, you can make a difference by filling the massive, growing demand for convenient, healthy drinking.
