Do you know the characteristics and engineering measures of pressure drainage system?

It mainly includes the following categories: 1) and Soventsinglestackdranage system-Suvito special single riser drainage system is adopted for the upper special pipe fittings, referred to as Suvito system for short. 2) Single-pipe drainage system without cyclone joint-a special single-pipe drainage system with cyclone as the upper special pipe fitting, which is called cyclone system for short. 3) Enhanced cyclone single riser drainage system (enhanced cyclone drainage system)-Special single riser drainage system uses enhanced cyclone as the upper special pipe fitting, referred to as enhanced cyclone system. 4) spiral pipe single riser drainage system without spiral pipe-the drainage riser adopts rigid PVC-U spiral pipe, and the upper special pipe fittings adopt ordinary cyclone (rotating water inlet pipe fittings) or hollow wall special single riser drainage system. Spiral tube system for short. There are two systems: internal spiral single stand and hollow spiral single stand. Summary: It is a pipe network drainage system in the field of architecture. In other words, the drainage of the building pipe network is realized by a pipe, and both drainage and ventilation are realized in a pipe through special pipe fittings. This is a new technology, which is mainly used in multi-storey and high-rise buildings with floors above 10, and will replace the double riser drainage system (consisting of drainage riser and ventilation riser) commonly used in high-rise buildings. 2 Advantages of special single riser system Edit system name Drainage capacity Main structural features of building Water seal protection accounts for space noise cost. In the later stage, it is easy to maintain the common single riser, with small and low gas and water in the same pipe, DC is easy to be damaged, small size is easy to be medium and large, and common double riser is easy to be high. The DC stability of ultra-high gas-water branch pipe is difficult, and the height of single riser is difficult. Development history and prospect of ultra-high gas-water mixed flow stability Xiaoxi Xiaoyi 3 The technology of editing special single riser system originated in Europe, America and Japan for nearly thirty or forty years. SOUBENTO technology imported from Switzerland by 1969 is adopted, and the technology has been continuously improved in practical use for many years. Special single riser drainage system has been widely used in high-rise residential buildings, hotels, hospitals and other places in Japan, and achieved good results. After it was introduced into China, according to the actual drainage situation, the internal diameter of the joint was increased and the blade angle was adjusted. Under the premise of not destroying the water seal of the appliance, the maximum water flow capacity of the riser was met, the water seal loss value was controlled below 25mm, and the positive and negative air pressure in the pipe was within 40mmAq, which was the maximum drainage within the allowable range and fully met the drainage requirements of super high-rise buildings. The new code issued by China in 2009 only established the rules of special single riser system. Therefore, the domestic single riser system has only been put on the market in recent years, and there are few domestic manufacturers with single riser patents and production. The special single riser system has the advantages of saving materials and large drainage flow, which makes up for the shortcomings of ordinary single riser and ordinary double riser. This is the power of science and technology and the necessity of social development. Excellent systems will replace and eliminate backward systems, and the prospect of dedicated single riser system will contribute to the construction of social urbanization. 4 Special single riser performance characteristics editor 1, single pipe drainage and exhaust. -High-rise buildings don't need exhaust risers, and a single pipe can realize exhaust and drainage. The blades inside the pipe form spiral water flow, and the water flow rotates against the pipe wall to decelerate and discharge, and at the same time forms hollow exhaust. 2. Save cost and space. -Because the exhaust pipe is omitted, the cost of exhaust pipe and pipe fittings is saved, and the whole drainage system only occupies one drainage pipe space. At the same time, the noise of the system is low. 3. Pressure resistance, earthquake resistance and corrosion resistance. In addition to the unique drainage technology, there are good casting and heat treatment processes and strict quality inspection. Iron castings have better compression resistance and are more suitable for high-rise buildings. Earthquake-proof requirements can reach about 30 degrees, no air leakage and no water leakage. The inner and outer surfaces are coated with 0.8mm thick antirust coating, which has high acid and alkali corrosion resistance. 4. Slim, lightweight and long life. —— Compared with the traditional drainage system, the diameter of pipe fittings is smaller to achieve the same drainage effect. Because of the small pipe diameter and no exhaust pipe, the drainage system is naturally light in weight. Because of its excellent corrosion resistance, the service life of this product is longer than that of ordinary cast iron pipe fittings. 5. Installation and maintenance are simpler. -The installation and maintenance of single pipe system is simpler, saving installation labor and cost. It can be tested layer by layer during installation, and there is no problem of cooperation between drainage and exhaust pipe during installation of double-pipe system. Only one installation hole is needed for each layer of each system, which can be installed and inspected layer by layer through the pressure detection port connector to ensure the installation quality of the system. 5 domestic status and product editing 1), cyclone drainage system without cyclone reducing joint. A special single riser drainage system with swirl noise reduction joints for upper special pipe fittings and plastic pipes was developed by Zhejiang Guanghua Company. Use plastic PVC material. 2)GY GYsinglestackdrainagesystem。 Xu Shui Xinghua Company developed a special single riser drainage system with GY intensified cyclone as the upper special pipe fitting. Made of cast iron. 3) CHT single riser drainage system. A special single riser drainage system with CHT cyclone joint is used for special upper pipe fittings-developed by Qingdao Jiahong Company. Made of cast iron and PVC, it has complete styles and rich product lines. 4)CJW cjwsinglestack drainage system。 A special single riser drainage system with CJS enhanced cyclone developed by Chongqing Yangtze River Pipeline Company for upper special pipe fittings. Made of cast iron. 5)WAB wabsinglestack drainage system. A special single riser drainage system, in which WAB-type enhanced cyclone separator is used as the upper special pipe fitting, was developed by Kunming Qunying Company. Made of cast iron. 6), AD single riser drainage system (ADsinglestackdrainagesystem). The drainage riser adopts reinforced spiral pipe, and the upper special pipe fittings adopt AD joint, which is a special single riser drainage system developed by Japan Jishui Company. Made of cast iron. 7) TTC independent drainage system. Special Single Riser System with Multi-channel Swirl Joints for Special Upper Pipes and Enhanced Spiral Tubes-Nanjing Jin Xuan Development Project. Wear-resistant pvc material is adopted. 8)DT DTsinglestackdrainagesystem。 Special single riser drainage system with DT enhanced cyclone separator for upper special pipe fittings-developed by Qingdao Haitong Company. Made of cast iron and polyvinyl chloride. In addition, there are XTN single riser drainage system and solar single riser drainage system, but the situation is unknown. 6 basic terms editor 1. The guide vane cyclone can be used with parallel guide vane cyclones or guide vane cyclones arranged up and down. Pipe fittings and pipes can be made of the same or different materials. When different materials are used, the tightness of the joints of pipes and fittings should be ensured. 2. Special pipe fittings The bottom of the riser of the single riser drainage system can use the lower special pipe fittings or set the pressure relief pipe. When using the pressure relief pipe, ordinary elbows (including two 45 elbows) can be used at the bottom of the drainage riser and the bottom of the pressure relief pipe. Reducing elbow, elbow with large curvature radius or elbow with variable cross-section can be used for special fittings at the lower part. 3, special single riser drainage system, when the riser adopts special pipeline, spiral pipe should be adopted. Ordinary spiral pipe can adopt PVC-U inner spiral pipe or hollow wall spiral pipe. The reinforced spiral pipe can be PVC-U reinforced spiral pipe or reinforced steel-plastic composite spiral pipe. When the riser is laid obliquely, spiral pipes should not be used. 4. The risers, pipe fittings and pipes of the special single riser drainage system can be freely combined, and the special pipe fittings can be equipped with ordinary drainage pipes; Special pipes can be equipped with ordinary drainage pipes; Special pipe fittings can also be matched with special pipes. 5. The guide vanes or spiral ribs of special pipe fittings and spiral ribs of spiral pipes shall be counterclockwise. 7. When the designed drainage flow of 1 drainage riser is greater than the maximum designed drainage capacity of ordinary single riser drainage system with only the top vent pipe extended. Small toilets in high-rise and multi-storey civil buildings with high building standards, low noise of drainage flow and improved drainage hydraulic conditions. 3 Multi-level branch pipes of drainage system are connected to drainage risers on the same floor (except for ordinary cyclones). 4 The toilet or pipeline well is small in area, and it is difficult to set ventilation risers (special ventilation riser, main ventilation riser or auxiliary ventilation riser). 5. Buildings that need to be provided with ventilation pipes, but not with ventilation risers. 6 When the designed drainage flow of drainage riser is less than the maximum drainage capacity of ordinary single riser drainage system with only one extended snorkel, a special single riser drainage system can be adopted as required. 7 When pipes or fittings are made of PVC-U or lined with PVC-U, the continuous drainage temperature should not be greater than 40℃, and the instantaneous drainage temperature should not be greater than 80℃; When HDPE or lined HDPE is used, the continuous drainage temperature should not be greater than 70℃, and the instantaneous drainage temperature should not be greater than 90℃. 8 Construction and installation editing points Before the construction and installation of the special single riser drainage system project, the following conditions should be met: 1 Technical documents such as design drawings are complete, and the design unit will make design disclosure. 2 The construction scheme or construction organization design has been approved and technical disclosure has been made. 3 Materials, construction strength, construction machines and tools, water, electricity, material storage site and other conditions meet the construction needs to ensure normal construction. Before construction and installation, we should understand the building structure, and formulate cooperation measures with civil engineering and other types of work according to the design drawings and construction scheme. Installation personnel should be familiar with the performance of special pipe fittings and pipes, master the basic operation requirements, and not blindly construct. 5 In the whole process of building structure engineering construction, the elevation and position of reserved holes, embedded sleeves and embedded parts should be determined in coordination with civil engineering where the pipeline passes through walls, floors and other structures. The hole size should meet the design requirements. 6. Check the appearance quality of pipes and fittings and the tolerance with joints, and remove dirt and sundries on the internal and external surfaces of pipes and fittings. 9 Acceptance requirements are edited by 1, special single riser drainage system engineering acceptance, and the main control project should include the following contents: 1 irrigation test; 2 pipeline slope; 3 setting of expansion joint of plastic pipe; Four-pass test. 2. For the acceptance of special single riser drainage system, the general items shall include the following contents: 1 setting of inspection port and cleaning port; ② Support spacing; 3 setting of fire-proof tape or fire-proof ring; 4 the height of the exhaust pipe extending out of the roof; 5. Pipe fitting requirements of the discharge pipe; 6 transverse tube