On December 19, 2010, the main torch of the Asian Paralympic Games was slowly extinguished at the Guangzhou Olympic Sports Center. The first Asian Paralympic Games declared victory, and it also announced that Yuchai's Asian Games service guarantee missions have all been completed!
Following the successful completion of the Guangzhou Asian Games safeguard work on November 27, the Yuchai Asian Games service support team revived the services of the Asian Paralympic Games after a moment of joy. During the Asian Games, more than 95% of the service vehicles were Yuchai engines. The Yuchai service guarantee team continued to maintain a good record of zero complaints and zero service disruptions, and successfully completed the service guarantee task.
Yuchai Guo 4 gas engine is used for the first time in Guangzhou and even in China, and the service guarantee is more difficult. In order to meet the visitor's travel requirements to the stadium, Guangzhou opened 14 temporary bus lines and used existing bus lines to open 8 bus lines. These lines were equipped with 550 barrier-free public transport buses and all were equipped with Yuchai State. 4 Gas engines, all of which were just on-line before the Asian Paralympic Games were held; another about 200 South American Paralympics transported media to the national 4 diesel engine is also the focus of protection. In order to do a good job in vehicle service support for the Asian Games, the Yuchai protection team continued to carry forward the fine tradition of early security work for the Asian Games. The earliest communication with the committee and public transport was completed, and the actual placement of key maintenance points for the Asian Games was put in place. The use of innovative methods such as staging inspections, night inspections, technical expert federation consultations, and mobile accessory kits enables the full coverage of service-assured vehicles and the rapid processing of problems. Under the guidance of the company's leadership, the service center was led by the customer service center and the services of the Asian Games and the Asian Games were coordinated by various departments. The work layout was early, resources were fully implemented, and the organization was rigorous.
After the end of the Asian Paralympic Games, Yuchai again won the unanimous approval of the leaders of the Guangzhou Communications Committee and the bus company system. By successfully completing the series of service guarantees for the Olympic Games, Asian Games, Asian Paralympics, etc., Yuchai has accumulated a lot of guarantee experience for large-scale sports games, laying a good foundation for Yuchai’s participation in foreign large-scale event protection.
Butterfly Valve is a valve which can be used for isolating or regulating flow. The closing mechanism takes the form of a disk. Operation is similar to that of a Ball Valve, which allows for quick shut off. Butterfly valves are generally favored because they are lower in cost to other valve designs as well as being lighter in weight, meaning less support is required. The disc is positioned in the center of the pipe, passing through the disc is a rod connected to an actuator on the outside of the valve. Rotating the actuator turns the disc either parallel or perpendicular to the flow. Unlike a ball valve, the disc is always present within the flow, therefore a pressure drop is always induced in the flow, regardless of valve position.
A butterfly valve is from a family of valves called quarter-turn valves. In operation, the valve is fully open or closed when the disc is rotated a quarter turn. The "butterfly" is a metal disc mounted on a rod. When the valve is closed, the disc is turned so that it completely blocks off the passageway. When the valve is fully open, the disc is rotated a quarter turn so that it allows an almost unrestricted passage of the fluid. The valve may also be opened incrementally to throttle flow.
There are different kinds of butterfly valves, each adapted for different pressures and different usage. The zero offset butterfly valve, which uses the flexibility of rubber, has the lowest pressure rating. The high performance Double Offset Butterfly Valve, used in slightly higher-pressure systems, is offset from the centre line of the disc seat and body seal (offset one), and the centre line of the bore (offset two). This creates a cam action during operation to lift the seat out of the seal resulting in less friction than is created in the zero offset design and decreases its tendency to wear. The valve best suited for high-pressure systems is the Triple Offset Butterfly valve. In this valve the disc seat contact axis is offset, which acts to virtually eliminate sliding contact between disc and seat. In the case of triple offset valves the seat is made of metal so that it can be machined such as to achieve a bubble tight shut-off when in contact with the disc.
Butterfly Valve
API Butterfly Valve, JIS Butterfly Valve, DIN Butterfly Valve, High Performance Butterfly Valves
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