China Zun Project: High temperature resistant metal hose for hot water heating system of high-rise buildings
Shanghai Dongfeng Pump Valve Factory is helping to build a super high-rise building project, supporting the hot water heating system of China Zun high-rise building with a high temperature resistant metal hose product. This product is made of stainless steel 304, and has a high temperature resistance of 200 degrees. It can not be replaced by hose valves. In terms of pressure bearing, it is also much higher than the hose.
Introduction to high temperature resistant metal hose for hot water heating system of high-rise buildings:
High temperature resistant metal hose pressure: according to the actual working pressure of the hose, check the nominal diameter and pressure gauge of corrugated metal hose, and decide whether to use stainless steel mesh type metal hose. The working temperature and range of the medium in the temperature hose; Ambient temperature when the hose is working. In case of high temperature, the pressure after temperature correction shall be determined according to the temperature correction coefficient of working pressure under high temperature of metal hose to determine the correct pressure level. The size of the high-temperature resistant metal hose is the nominal diameter of the hose, the valve type (mainly including flange connection, threaded connection, quick valve connection), the size of the metal hose, and the length of the hose. The chemical properties of the medium conveyed in the medium hose determine the material of each part of the hose according to the corrosion resistance parameter table of the hose material. High temperature resistant metal hoses can be divided into four common types: galvanized hoses, plastic coated hoses, explosion-proof metal hoses and metal hoses. Due to their excellent performance, metal hoses are widely used in cable protection. They are common in electric power, machinery, shipbuilding, etc. The manufacturing materials for stainless steel cable protection pipes are generally 304 and 301, So what are the main differences between them? Let's analyze them.
Introduction to China Zun Project:
China Zun is a super high-rise building located in Plot Z15, the core area of CBD in Chaoyang District, Beijing. When completed, it will be a landmark building in Beijing. The west side of the project is opposite to the current. high building of Beijing International Trade Phase III, with a total height of 528 meters. It will be planned as the headquarters building of CITIC Group in the future. It was started on September 12, 2011, and the main body was sealed at the end of 2016, It will be completed and delivered in 2018. Invested by Beijing CITIC Heye Co., Ltd., the total investment is expected to reach 24 billion yuan. [1] Z15 is a large plot of CBD core area. Plot Z15 extends to Jinhe East Road in the east, Jinghui Street in the south, Jinhe Road in the west and planned green land in the north. CITIC Group won the plot in the CBD core area on December 22, 2010 for 6.3 billion yuan, with a total floor area of about 437000 square meters. There are 108 floors above the ground, 7 floors in the pure basement, and 5 floors underground in the tower area. After completion, it will replace the third phase of the International Trade Center as the first high-rise building in Beijing. The foundation pit is about 140 meters from east to west and 80 meters from north to south, covering an area of 11478 square meters. The tower adopts the core tube mega frame outrigger transfer truss structure, and the foundation adopts the foundation pile raft plate and anchor rod structure, which is a global seismic performance. The super high-rise building with a length of more than 500 meters is excellent. Advanced BIM technology is used throughout the construction, and computers are used to pre assemble the structure instead of manual work, Reduce rework and errors in construction. CITIC Group, the developer and builder, said that "China Zun" will integrate Grade A office buildings, conferences, commerce, tourism and various supporting services. After the completion of the project, it will attract international financial institutions and Fortune 500 enterprises. As of July 2014, the project has entered the sprint stage before going out of the ground. On June 8, 2014, the results of the selection of "China's Top Ten Contemporary Buildings" were announced, and China Zun won the title of "China's Top Ten Contemporary Buildings".
Introduction to high-rise buildings: high-rise buildings, residential buildings with a building height of more than 27m, and non single storey factories, warehouses and other civil buildings with a building height of more than 24m. In the United States, 24.6m or more floors are regarded as high-rise buildings; In Japan, 31m or 8 floors and above are regarded as high-rise buildings; In the UK, buildings equal to or greater than 24.3m are regarded as high-rise buildings. According to Article 1.0.2 of the China High Rise Code (JGJ 3-2010), the concrete structure of residential buildings with 10 floors or more or buildings with a height of more than 28m and other high-rise civil buildings with a height of more than 24m are high-rise buildings. In 280 BC, the ancient Egyptians built the Alexandria Lighthouse, which is more than 100 meters high. In 523, Songyue Temple Tower with a height of 40 meters was built in Dengfeng County, Henan Province, China. Modern high-rise buildings sprang up in the United States and were built in Chicago in 1883. An 11 storey insurance company building was built in 1931. The 102 storey Empire State Building was built in New York After World War II, there was a boom in high-rise buildings around the world. The Sears Tower in Chicago, USA, built in 1970~1974, is about 443 meters high.
Introduction to hot water heating system of high-rise buildings: hot water heating system is a heating system using hot water as heat medium.
Precautions: prevent the vent valve of outdoor overhead pipe network from freezing. If the vent valve of outdoor overhead pipe network is set too high, it will be inconvenient to operate, and if it is set too low, it will be easy to freeze. The solution to this problem is to set the vent valve at the lower position and add a circulation heat tracing core pipe at the same time. The pipe slope shall be set to ensure that in case of pipe lintel and wall crossing in the design, it is necessary to cooperate with the civil engineering to reduce the downward bend of the horizontal pipe to a large extent, pay attention to the setting height and spacing of the support, ensure the slope direction and gradient of the water supply and return main pipes, so as to ensure the smooth exhaust. When the exhaust outlet layout is designed correctly, the exhaust outlet cloth is usually placed indoors or connected to the outside. If it is placed indoors, because the interior decoration is new, it will inevitably cause damage to furniture and walls due to splashing air and shallow water. If it is directly connected to the outside, first of all, the exterior wall is easily polluted by water rust, and the beauty of the building is affected 2、 The deflation may affect the pedestrians under the building and is unsafe 3、 There are a lot of green things around the building now, which will affect the growth of plants when discharging water and air. In order to avoid this kind of situation, the following measures can be taken: First, try to place the gas gathering valve (tank) in the kitchen or toilet, and lead the exhaust pipe to the place with a drain outlet, so that the exhaust pipe mouth is 5cm away from the ground or the bottom of the pool; 2、 The selected products shall be of reliable quality, and the exhaust valve shall be installed flatly, vertically and firmly during construction; 3、 The control valve is installed at the automatic exhaust valve. If the air hole flows, it can be replaced or repaired in time without affecting the normal operation of the system; 4、 The plastic hose with matching diameter shall be sleeved on the exhaust pipe, and the other end of the pipe orifice shall be led to the outside or the pool to avoid shallow water vapor.
Shanghai Dongfeng Pump Valve Factory is helping to build a super high-rise building project, supporting the hot water heating system of China Zun high-rise building with Dongfeng brand high temperature resistant metal hose products. This product is made of stainless steel 304, and has a high temperature resistance of 200 degrees. It is irreplaceable for hose valves, and its pressure bearing is much higher than that of hoses.