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Forked pipes in water supply and drainage treatment: the calculation of pipe diameter mainly considers the uniformity of water distribution, and there are many orifices on the branch pipes. In order to achieve a certain uniformity of water distribution, the cross-sectional area of the main pipe (main pipe), branch pipe and orifice should have a certain proportion.
Generally, the flow rate of the main pipe, branch pipe and orifice is selected, and then the pipe diameter or pore diameter is determined in turn. Water distribution system, high resistance water distribution and low resistance water distribution system. There are different design parameters and calculation methods.
For more information, please refer to the Water Supply and Drainage Design Manual.
A pipe has many branches, which is a tree-like pipe network. Taking the water supply network as an example, for the tree network, the main pipe should be calculated first
1. Calculate the flow rate of each pipe section on the main pipe, and determine the diameter of each pipe section according to the flow rate of each pipe section (you can directly check the economic flow table to determine the pipe diameter, or select an economic flow rate, and then calculate the pipe diameter).
Pipe diameter d=[4q (
2. Calculate the head loss of each pipe section on the main pipe, and accumulate the water head (water pressure) that should be at the beginning of the main pipe.
h = slq^2 h=h1+h2+h3+..
3. Calculate the available head of each branch pipe and select a reasonable pipe diameter.
The specific resistance s = h lq 2 is used to obtain the pipe diameter d by the reverse calculation of s (or looking up the table).
Different from the water supply pipe, the flow of the drainage pipe is a non-pressurized flow, and the design is calculated according to the uniform flow of the open channel with the specified filling degree, which can be calculated according to the relevant charts.
For details, please refer to the water supply and drainage textbooks "Water Supply Engineering" and "Drainage Engineering" (Volume I).
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Let's look at the textbooks.
The question is too general.
Basic knowledge is lacking.
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How about the water supply and drainage major? Is employment good? Here's the details, let's take a look!
The water supply and drainage major is an old major, at the beginning it was called up and down pipes, and the name of the profession is more earthy, even if it is changed to water supply and drainage, it has always been colder.
Water supply and drainage is traditionally biased towards civil engineering, and the main discipline content is water supply engineering, that is, the production and transportation process of tap water; Drainage engineering, which is the content of wastewater discharge, transportation and treatment; Building water supply and drainage is the design of water supply, drainage, rainwater, fire protection, hot water, reclaimed water and other pipelines and equipment in buildings. It can be seen that water supply and drainage is a very practical major, which is needed by many design institutes, and there are relatively few schools in the country that open this major, and the pressure of employment competition is not so great.
If you want to further your studies in the future, then the further study of water supply and drainage is mainly in water supply and drainage engineering, especially drainage engineering, which is not much different from environmental engineering, and in the field of research, the scope of environmental protection is much wider than that of water supply and drainage. Therefore, with the research field of environmental engineering, there are many studies that can be done on water supply and drainage.
There are two main categories of water supply and drainage graduates into the design institute, one is the architectural design institute, the other is the municipal design institute, the former is mainly to design buildings, in which the architecture and structure are the main majors, and the water supply and drainage are public equipment, and electricity, HVAC, air conditioning and other majors are juxtaposed, not the main majors, but the pressure and risk are also small, in addition to fire protection. The latter is mainly the design of structures, for the main business is the design of water plants (including water supply plants and sewage plants) of the municipal design institute, water supply and drainage is the main specialty, so it is unscientific to say that water supply and drainage is a subsidiary specialty.
In addition, this major is relatively simple and easy to learn, not so advanced and complex, and graduation is relatively easy.
Employment. Engineering enterprises: water supply and drainage engineering, hydropower engineering, HVAC engineering, engineering planning, construction management, project manager;
**, public institutions: urban water supply engineering, water pollution control planning, water resources protection, pollutant monitoring and analysis, sewage treatment.
Graduate school entrance examination. Municipal Engineering, Architecture and Civil Engineering, Environmental Science and Engineering, Civil Engineering.
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Do you want to learn what water supply and drainage engineering majors?
Mr. Zeng, the human resources director of a famous enterprise, said that the water supply and drainage engineering major cultivates knowledge of urban water supply engineering, drainage engineering, building water supply and drainage engineering, industrial water supply and drainage engineering, water pollution control planning and water resources protection, etc., and can be engaged in planning, design, construction and construction in ** departments, planning departments, economic management departments, environmental protection departments, design units, industrial and mining enterprises, scientific research units, universities and technical secondary schools, etc. Senior engineering and technical personnel in the field of water supply and drainage engineering who work in education and research and development.
So is the water supply and drainage engineering major good? Let me summarize the main courses, professional knowledge and professional skills of water supply and drainage engineering for all of you!
1. Main courses of water supply and drainage engineering:
Advanced Mathematics, English for Professional Purposes, Engineering Mechanics, Mechanics of Materials, Surveying, Hydraulics, Pumps and Pumping Stations, Hydrology and Hydrogeology, Fundamentals of Civil Engineering, Electrical Engineering, Building Electrical, Water Supply Engineering, Drainage Engineering, Water Engineering Construction, Building Water Supply and Drainage Engineering, Water Supply and Drainage Network System, Water Treatment Biology, General Chemistry, Organic Chemistry, Physical Chemistry, Inorganic and Analytical Chemistry.
2. Professional knowledge and skills of water supply and drainage engineering:
Graduates are expected to acquire knowledge and competencies in the following areas:
The major of water supply and drainage science and engineering requires students to mainly learn the basic theories and basic knowledge of general chemistry, water analytical chemistry, engineering mechanics, surveying, engineering drawing, microbiology, hydraulics, electrical engineering, water supply and drainage engineering, and receive basic training in foreign languages, computer technology and drawing, pollutant monitoring and analysis, engineering design, management and planning, and have the basic ability of scientific research, engineering design and management planning in the field of water science and environmental technology. Conveying, ** and application of the necessary basic theories, basic skills, receive engineer training and preliminary'Scientific research method training, with the basic ability to independently acquire knowledge and analyze and solve the practical problems of water supply and drainage engineering, have the ability to plan water supply and drainage system, carry out process design, construction, management and simple structural design of water supply and drainage engineering, and master water resources control and protection, water conservation and other related knowledge.
The above is an analysis of what to learn about the water supply and drainage engineering major of the undergraduate major, and for more analysis information of the water supply and drainage engineering major of the college entrance examination major, please pay attention to the express education career planning channel.
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Water supply and drainage science and engineering is a secondary discipline under civil engineering.
The main task of the water supply and drainage science and engineering major is to study the social cycle of water, including water extraction, purification, transportation, treatment, recycling, cleaning, drainage, and release. Using scientific methods and engineering technology to maintain a benign and sustainable social cycle of water is the supporting discipline of the "water industry" industry.
This major cultivates professional knowledge in urban water supply and drainage engineering, drainage engineering, water intake engineering, flood control engineering, building water supply and drainage engineering, industrial water supply and drainage engineering, water pollution control planning and water resources protection, etc., and obtains basic ability training in the field of water supply and drainage engineering.
Application-oriented professionals who can engage in professional work in planning, design, construction and management in urban construction, planning, economic management, environmental protection and other departments, as well as architectural design and construction units, industrial and mining enterprises.
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As a student of water supply and drainage science and engineering, I am a very good choice for contemporary college students in the major of water supply and drainage engineering, and I studied water supply and drainage at Inner Mongolia Agricultural UniversityThe water supply and drainage science and engineering major trains many people in water treatment, who understand water pumps and fluid mechanics, and will enter the society to work in water companies, sewage treatment plants, and municipal engineering.
The knowledge of water supply and drainage science and engineering in urban water supply, drainage, building drainage, industrial water supply, water pollution control, etc., can get good employment in the city in the futureDuring the school period, students mainly have the basic theories and basic knowledge of general chemistry, engineering mechanics, surveying, engineering drawing, microbiology, hydraulics, electrical engineering, water supply and drainage engineering, so that we can learn more water-related knowledge and cultivate students who can be competent in hydrological work in the future. Based on the field of reuse or discharge, it is a good choice for college students to be able to engage in municipal water supply and drainage, building water supply and drainage, etc.
The subjects of water supply and drainage science and engineering are studied in schoolEngineering Mechanics, Surveying, Hydraulics and Pumps, Water Treatment Microbiology, General Chemistry, Surveying Practice, Engineering Drawing, Computer Application and Computer Practice, Hydraulics Experiment, Microbial Experiment, Water Quality Analysis Experiment, Water Treatment Experiment, Curriculum Design, Understanding Practice, Graduation Internship, Graduation Design (**) Hydraulics Experiment, Microbial Experiment, Water Treatment Experiment (including coagulation, sedimentation, filtration, exposure to filial piety, air flotation, sludge and other experimental projects), these are the knowledge learned in water supply and drainage science and engineeringWater supply and drainage science and engineering is also a relatively good niche major in universities. It is a major in civil engineering.
In conclusion, I think this major is a good choice for college students, not only to learn a lot about water in college, but also to contribute to environmental protection in the future.
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