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Wednesday, March 25, 2015
The Description of power transformer Design
In recent years, with the rapid development of China’s
power industry, power transformers is hair, transmission, transformation and one of the important equipment in the distribution system, its performance, quality is directly related to power system reliability and operational efficiency.
The power transformer is one of the core equipment of power system operation, therefore, safe and reliable 110kv power transformer operation is the fundamental guarantee for the normal operation of the power system.With the increasing of the capacity of the transformer, the transformer loss will also increase, and the tank wall and the radiator alone can’t meet the cooling requirements, requires the use of sub-cycle air-cooled or forced oil circulation wind, coolers, cooling and then pump back to the transformer.Large-capacity transformer has been oriented cooling, has acertain amount of oil in the winding and core internal to enter the cold oil in the fuel tank all the internal outflow through the winding and core, so that took away a lot of heat, you can increase the cooling efficientcy. Transformer cooling system determines the normal life of the transformer cooling system safe and economic operation of the transformer and of great importance.In power plants or substations, air-cooled transformers with multiple fan cooling, control transformer oil temperature within the rated range, to ensure the normal working of the transformer. In order to improve the reliability of power system operation and extend the life of the transformer, the transformer oil temperature real-time monitoring.
At present, there are many transformers are collected by the electric contact thermomter, showing the transformer oil, to control the fan start and stop, transformer oil, to control the fan start and stop, transformer temperature control in the actual operation, due to the fan start when fully operational, while all the stops, the impact of current seriously affect the life of the motor. And inabailty to contact and control room,it is not possible to achieve unmanned control of the transformer, an increase of operating costs. Transformer thermostat there is always some problems, such as measurement error, and poor antiinterference ability, these are the very difficilt problem in engineering. The temperature controller of the early , bulky and complicated to operate , poor anti-interference ability , to the use of the project site has also brought a lot of inconvenience . Microcontroller technology continues to evolve , the temperature controller forward monolithically integrated , intelligent direction to develop rapidly. Intelligent temperature control system, the problems of power transformers during operation , can be used to achieve the automatic acquisition of the temperature show that the order of the fan starts and stops .
According to site operational requirements , the design selection of the PIC16F877 MCU constitute the transformer temperature control system , the equipment is simple ,user can easily set up through the panel buttons to control the fan starts and stops, alarm and trip thresholds, all the set parameters aren’t after power lost. The temperature acquisition accuracy is high, and has taken many measures to protect the motor, such as overload, phase loss protection.
Due to poor industrial environment in the field, the system will generate a lot of interference, designed to take thr anti-jamming measures, increase in the IC’s power supply at the entrance to the filter capacitor, the signal into the microcontroller through the optocoupler isolation. Finally, wireless communications, remote monitoring, control room through wireless communication to grasp the scene of operation, can be arbitrary to make a variety of accidents in atimely manner to reflect the unmanned control of the transformer. Measurement error is small, high resolution and strong anti-interference ability of the system as a whole, the choice of all devices meet industry-standard and is suitable for high temperature environment.
As a result of the above mersures, to ensure that the control system stability, the design has good scalability meet the requirements of the vatious models of the transformer.
power industry, power transformers is hair, transmission, transformation and one of the important equipment in the distribution system, its performance, quality is directly related to power system reliability and operational efficiency.
The power transformer is one of the core equipment of power system operation, therefore, safe and reliable 110kv power transformer operation is the fundamental guarantee for the normal operation of the power system.With the increasing of the capacity of the transformer, the transformer loss will also increase, and the tank wall and the radiator alone can’t meet the cooling requirements, requires the use of sub-cycle air-cooled or forced oil circulation wind, coolers, cooling and then pump back to the transformer.Large-capacity transformer has been oriented cooling, has acertain amount of oil in the winding and core internal to enter the cold oil in the fuel tank all the internal outflow through the winding and core, so that took away a lot of heat, you can increase the cooling efficientcy. Transformer cooling system determines the normal life of the transformer cooling system safe and economic operation of the transformer and of great importance.In power plants or substations, air-cooled transformers with multiple fan cooling, control transformer oil temperature within the rated range, to ensure the normal working of the transformer. In order to improve the reliability of power system operation and extend the life of the transformer, the transformer oil temperature real-time monitoring.
At present, there are many transformers are collected by the electric contact thermomter, showing the transformer oil, to control the fan start and stop, transformer oil, to control the fan start and stop, transformer temperature control in the actual operation, due to the fan start when fully operational, while all the stops, the impact of current seriously affect the life of the motor. And inabailty to contact and control room,it is not possible to achieve unmanned control of the transformer, an increase of operating costs. Transformer thermostat there is always some problems, such as measurement error, and poor antiinterference ability, these are the very difficilt problem in engineering. The temperature controller of the early , bulky and complicated to operate , poor anti-interference ability , to the use of the project site has also brought a lot of inconvenience . Microcontroller technology continues to evolve , the temperature controller forward monolithically integrated , intelligent direction to develop rapidly. Intelligent temperature control system, the problems of power transformers during operation , can be used to achieve the automatic acquisition of the temperature show that the order of the fan starts and stops .
According to site operational requirements , the design selection of the PIC16F877 MCU constitute the transformer temperature control system , the equipment is simple ,user can easily set up through the panel buttons to control the fan starts and stops, alarm and trip thresholds, all the set parameters aren’t after power lost. The temperature acquisition accuracy is high, and has taken many measures to protect the motor, such as overload, phase loss protection.
Due to poor industrial environment in the field, the system will generate a lot of interference, designed to take thr anti-jamming measures, increase in the IC’s power supply at the entrance to the filter capacitor, the signal into the microcontroller through the optocoupler isolation. Finally, wireless communications, remote monitoring, control room through wireless communication to grasp the scene of operation, can be arbitrary to make a variety of accidents in atimely manner to reflect the unmanned control of the transformer. Measurement error is small, high resolution and strong anti-interference ability of the system as a whole, the choice of all devices meet industry-standard and is suitable for high temperature environment.
As a result of the above mersures, to ensure that the control system stability, the design has good scalability meet the requirements of the vatious models of the transformer.
Monday, March 23, 2015
excellent fish meal machine
Equipmentimes has excellent fish meal machine which made in China and specially for export.
Below is the description of this excellent fish meal machine:
Steamer(directly of indirectly steaming stock)
The shell jacket, the intermediate shaft and the helical blade of the steamer provide indirect steam heating. The feed steam calandrias on both sides of the steamer shell provide direct steam heating.
Squeezer of fish meal machine (expelling most of the water in steamed stock by squeezing)
1.Single-screw squeezer
The single-screw squeezer has a tapered intermediate shaft and the helical blade with variable pitch, forming a decreasing space to provide squeezing. It can well expel most of the water and fat in fish stock.
2.Double-screw squeezer
The double-screw squeezer has a tapered intermediate shaft and the helical blade with variable pitch, and can squeeze fish stock and expel most of the water and fat.
Produce you may like:
rice milling plant
Ice Cream Mix Machine
Below is the description of this excellent fish meal machine:
Steamer(directly of indirectly steaming stock)
The shell jacket, the intermediate shaft and the helical blade of the steamer provide indirect steam heating. The feed steam calandrias on both sides of the steamer shell provide direct steam heating.
Squeezer of fish meal machine (expelling most of the water in steamed stock by squeezing)
1.Single-screw squeezer
The single-screw squeezer has a tapered intermediate shaft and the helical blade with variable pitch, forming a decreasing space to provide squeezing. It can well expel most of the water and fat in fish stock.
2.Double-screw squeezer
The double-screw squeezer has a tapered intermediate shaft and the helical blade with variable pitch, and can squeeze fish stock and expel most of the water and fat.
Produce you may like:
rice milling plant
Ice Cream Mix Machine
Sunday, March 22, 2015
classic shapes pub brewery
Pub brewery are of classic shapes, e.g. with copper cladding and onion shaped brewhouse, etc or plain industrial shapes. They are always eye-catching showpieces in the brew pubs or restaurants. They are competent with production of different style lager and ales.
We are very professional contractor and supplier of pub brewery, being able to supply micro breweries and pub brewery from 1 to 30hl brew batch size.
- Showpiece style have classis brewhouses with onion head & copper cladding.
Being professional at realization of your brewing business plans, we are very capable at followings:
- Feasibility study, budgetary proposals, customized-design
- Manufacture
- Installation, commissioning and training personnel at site
- Extending output of existing brewing systems and upgrading old brewing systems.
- Consulting
- Raw material sourcing
Product you may like:
polymer insulator in Equipmentimes
Our polymer insulator has provided insulation and necessary creepage
distance, to ensure the composite post insulator running long-term and safety in
the atmosphere environment.
Feature & description of polymer insulator
• Composite Post Insulator with Porcelain Core is consist of porcelain core, sheds and metal fitting. The inner insulation is made of high-strength porcelain by isostatic pressing processing technology, and bear the whole mechanical load in the running. Shed is made of composite material and the raw material is silicone rubber by the high-temperature injection technology.
• polymer insulator has provided insulation and necessary creepage distance, to ensure the composite post insulator running long-term and safety in the atmosphere environment. When the porcelain insulator breaks due to the brittleness, the wrapping to porcelain core by shed can reduce the harmful influence to the workers at working site and other electrical equipments around.
Product you may like:
fan for transformer
gas relay
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| polymer insulator in Equipmentimes |
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| polymer insulator in Equipmentimes |
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| polymer insulator in Equipmentimes |
• Composite Post Insulator with Porcelain Core is consist of porcelain core, sheds and metal fitting. The inner insulation is made of high-strength porcelain by isostatic pressing processing technology, and bear the whole mechanical load in the running. Shed is made of composite material and the raw material is silicone rubber by the high-temperature injection technology.
• polymer insulator has provided insulation and necessary creepage distance, to ensure the composite post insulator running long-term and safety in the atmosphere environment. When the porcelain insulator breaks due to the brittleness, the wrapping to porcelain core by shed can reduce the harmful influence to the workers at working site and other electrical equipments around.
Product you may like:
fan for transformer
gas relay
Thursday, March 19, 2015
Equipmentimes Announces to Supply Brewery Equipments for Companies Involved in Beer Business
Dalian, China, March 14, 2015 – For any brewer, kegs are the best way to store beer and maintain its original taste and flavor. Since a beer keg is a vital part of the brewery business, China based Equipmentimes announces to offer a variety of beer kegs, available in different capacities. These high quality stainless steel beer kegs will allow storing of beer, keeping their best quality intact for a long-term consumption.
The spokesperson of the company maintains that the brewery business is growing steadily across the world, with a number of beer bars and pubs, serving chilled beer to their customers. Keeping this growing demand in concern, the company now announces to export beer kegs at competitive prices. These kegs feature decent craftsmanship with a stackable design for a perfect storage. One can choose from various sizes to meet the specific beer storage requirements.
Equipmentimes specializes in the design and development of production lines for processing a variety of food products, and their beer kegs is a new addition to their portfolio. Besides brewery equipments, one can procure machineries for baking, fish processing, dairy product processing, ice cream making and others. They have different types of ice cream making machines for manufacturing flavorful soft serves. They also have machines for non-fat ice creams, yogurt and sorbet.
Besides supplying ice cream machines, the company has also started offering Ice Cream Display Cabinet for storing and displaying ice cream varieties before the customers. The cabinets feature different types of display cases with different capacity trays for keeping ice creams. The cabinets have been designed to maintain the perfect humidity and temperature conditions for keeping ice creams in perfect conditions, maintaining the original taste and flavor.
Equipmentimes supplies all these equipments at cost-effective prices to the global customers, with a quality guarantee. They can supply high quality machines to anywhere in the world in a timely manner. To learn more about these new machines, one can visit the website http://www.equipmentimes.com/.
Singapore Jan imports& exports decline 17.3%& 10%
Statistics from Singapore Department of Statistics showed that the country's import price index in January widened its decline to 17.3% year-on-year (down 13.1% in December). On a monthly basis, the index kept a drop of 4.8%.
During this period, the export price index also widened its decline to 10% year-on-year (down 7.2% in December). On a monthly basis, the exports fell 2.8%.~
You May Also Like:
gas relay
polymer insulator
During this period, the export price index also widened its decline to 10% year-on-year (down 7.2% in December). On a monthly basis, the exports fell 2.8%.~
You May Also Like:
gas relay
polymer insulator
Wednesday, March 18, 2015
How to find best 110kv power transformer
In this world, many manufacturers are able to make 110kv power transformer, but do you know how to find the best 110kv power transformer?
Below are description of how to find the best 110kv power transformer.
First, you need to know the details of this product, meaning the parameters,types and son on.
Second, if you want to import such machine, you should know which country is your best choice, which country have ability to make it.
Third, after you got the details of this product, you can search the name in B2B website in that country.
Below are description of how to find the best 110kv power transformer.
First, you need to know the details of this product, meaning the parameters,types and son on.
Second, if you want to import such machine, you should know which country is your best choice, which country have ability to make it.
Third, after you got the details of this product, you can search the name in B2B website in that country.
After read this article, you should know how to find the best 110kv power transformer!
You may also like:
Monday, March 9, 2015
Equipmentimes:first wearable apple watch has come to the world
Apple unveiled Monday the company's first wearable product, known as Apple Watch.
Apple Chief Executive Officer Tim Cook started his presentation at a San Francisco event by introducing a new Apple Store in eastern Chinese city of Hangzhou.
Apple, headquartered in Cupertino, northern California, has seen its presence outside the United States, especially China, ever expanding as analysts expect its revenues overseas surpassing those at home market.
Apple Watch was first announced in September 2014, when iPhone 6 and iPhone Plus, the new versions of Apple smartphone, were officially introduced.
The smart watch is the company's newest device in years. Its previous device, iPad, was released in 2010. Other companies have had smart watches on the market for years.
The device costs $349 for a base model, while a luxury gold version will go for $10,000. Apple Watch works mostly with iPhone and claims to carry more features and facilitates more applications, or apps, than parallel products on the market.
Among basic functions, it shows email, texts and phone calls, news and fitness readings, as well as weather forecast and personal schedules.
The company will accept pre-order for the product on April 10 and make it available in the United States and eight markets outside the country, including Chinese mainland, on April 24.
Apple executives announced a series of updates to some of the company's products and services at the Monday morning event.
See more detail here: http://www.equipmentimes.com/news/news/201503100824401956.html
Apple Chief Executive Officer Tim Cook started his presentation at a San Francisco event by introducing a new Apple Store in eastern Chinese city of Hangzhou.
Apple, headquartered in Cupertino, northern California, has seen its presence outside the United States, especially China, ever expanding as analysts expect its revenues overseas surpassing those at home market.
Apple Watch was first announced in September 2014, when iPhone 6 and iPhone Plus, the new versions of Apple smartphone, were officially introduced.
The smart watch is the company's newest device in years. Its previous device, iPad, was released in 2010. Other companies have had smart watches on the market for years.
The device costs $349 for a base model, while a luxury gold version will go for $10,000. Apple Watch works mostly with iPhone and claims to carry more features and facilitates more applications, or apps, than parallel products on the market.
Among basic functions, it shows email, texts and phone calls, news and fitness readings, as well as weather forecast and personal schedules.
The company will accept pre-order for the product on April 10 and make it available in the United States and eight markets outside the country, including Chinese mainland, on April 24.
Apple executives announced a series of updates to some of the company's products and services at the Monday morning event.
See more detail here: http://www.equipmentimes.com/news/news/201503100824401956.html
Thursday, March 5, 2015
machinery trader from China
Equipmentimes is an advanced machinery trade from China.
Equipmentimes have ability to co-ordinate with most of China manufacturers and then find the best goods export to foreign country.
Equipmentimes is also a B2B platform which can help you the process of exporting, when you are doing business with them, what you care is only for product, the price, the quality, they will help you to care about.
Now lots of importers choose this B2B platform to improve their business.
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