The first type is the bare pipe water wall. This is the simplest structure of the water wall. The advantage is that ordinary seamless steel pipes can be used, and it is more convenient to replace the water wall pipe. The disadvantage is that the temperature of the furnace wall is still high, and heavy refractory bricks are required. The steel frame of the corresponding boiler should be strengthened. , The air leakage of the furnace wall is relatively large. Old-fashioned high-pressure boilers and medium and small boilers are used more frequently.
The second tupe is the membrane water wall. The membrane water wall is welded by seamless steel tubes with fins. The Water Wall Tubes are connected by fins to make the water wall into a whole. This kind of water wall is called a membrane water wall. Its function is to strengthen the heat transfer of the water wall and greatly reduce the temperature of the furnace wall. The furnace wall does not need refractory bricks, but only requires thermal insulation materials. Compared with the conventional heavy furnace wall, the weight can be reduced by 60% ~ 70%, the furnace wall heat storage is reduced by 80%, the start and stop time is shortened, and the fuel consumption is reduced. The load of the furnace steel frame is greatly reduced, saving refractory materials and steel.
The third type is the pierced pipe water wall. The barbed pipe water wall pipe is made by welding many grab nails with a length of 20 to 26 mm and a diameter of 6 to 12 mm on the water wall pipe. It is mainly used to lay the gas belt. Generally, for boilers that burn fuel with low calorific value and low volatile content, in order to stabilize the fire, pierced pipe water walls are often used for laying the fire protection belt.
Wall Mounted Boiler,Water Wall Tubes,Wall Mounted Combi Boiler,Water Wall Tubes In Boiler Jinan Yuanda Power Equipment Co.,Ltd. , https://www.ydboilerpart.com
The boiler water wall is the main radiation heat surface, arranged inside the boiler chamber and proceeds the heat exchange directly with the high temperature flame. The convection tubes are the convection heat surface of the boiler, arranged between the boiler chamber outlet and the end heat surface and proceed the heat exchange directly with the high temperature fume. The water wall and convection tubes are the main heat surface of the boiler, the tubes diameter for both generally usedΦ 51-60mm boiler steel tubes, also as the request.
·Beijing Court: In the first phase of the 2018 Beijing-based passenger car judicial disposal, 68 vehicles participated
The reporter learned from the Beijing Higher People's Court that the judicial disposition of the first phase of the Beijing-based passenger car involved in the case was initiated in 2018, and a total of 68 small passenger cars will be disposed of. The public can obtain the ownership of the small passenger car seized and detained by the Beijing court through the bidding process, and handle the vehicle transfer registration procedures in accordance with relevant procedures.
According to the relevant person in charge of the Beijing Higher People's Court, according to the regulations, the bidder must be qualified for the passenger car, that is, in accordance with relevant regulations, the valid application code has been obtained in the Beijing Small Bus Index Control System, but the vehicle has not yet been obtained. Individuals, legal persons and other organizations that configure indicators are not allowed to participate in bidding.
It is understood that the judicial disposal of this Beijing-based passenger car continues to adopt the “bidding price setting modeâ€, and the vehicle evaluation price is used as the starting price. At the same time, the maximum price of the vehicle is set to 150% of the vehicle evaluation price. The buyer is the highest bidder within the limit price range. When multiple people report the maximum price, the Beijing Property Rights Exchange judicial disposal network platform will automatically determine the final buyer according to the conditions set by the unified.
The unified setting conditions are that the bidders who participate in the Beijing Small Bus Index Management Information System have the most accumulated number of bidders as the final buyer; the number of bidders of the multiple bidders is the same, then the registration time of the Beijing Small Bus Indicators Regulation Management Information System is the earliest. The bidder is the ultimate buyer.
The relevant situation of the passenger cars involved in the judicial disposition has been displayed online. Among them, the highest evaluation price was 406,400 yuan, and the lowest was 26,500 yuan.