The definition of the word lift is: lift yángchéng. (1) elevator; The distance or length by which something (such as water in a canal lock) rises; The height at which the pump rises is usually used for calculation. The structure is: lift process. The pinyin is yángchéng. The phonetic notation is: ㄤㄔㄥ _.
What is the specific explanation of the elevator? We will introduce you through the following aspects:
First, the network explains the details of this viewing plan.
The lift of lifting pump refers to the height that the pump can lift water. It is an important working performance parameter of the pump, also known as the pressure head. It can be expressed as the increase of pressure energy head, kinetic energy head and potential energy head of fluid, that is, H = (P2-P1)/ρ G+(V2 _-V1_)/2g+Z2-Z1,where H- lift, m; P 1, p2-the pressure of the liquid at the inlet and outlet of the pump, pa; V 1, v2-the flow velocity of the fluid at the inlet and outlet of the pump, m/s; Z 1, Z2- entrance height, m; ρ-liquid density, kg/m _；; Gravity acceleration, m/s.
Poetry about life
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Idioms about elevators
Heng Shicheng's book is full of pride.
Vocabulary about elevators
Milestones, bright future, comprehensive progress of Neo-Confucianism and Shi Chengshu, and all procedural actions.
Sentences about life.
The pump with high lift and low specific speed of 1 determines that the reverse pressure gradient in the blade channel is large, which makes the water flow easy to separate on the blade surface, even at the design point of the pump.
2. Obviously, this influence is mainly reflected in three aspects, namely, the hydraulic efficiency of the pump, its dynamic performance and theoretical head.
3. The high-lift wing and the forward-swept wing have excellent gears and slow speed.
4. According to the theoretical cycle indicator diagram of reciprocating pump, the formulas for calculating the effective power and effective lift of reciprocating pump with gas-liquid homogeneous flow are established respectively when gas is compressed and expanded according to isothermal process and polytropic process.
5. At present, the drainage system of sewage pumping station mainly adopts manual duty drainage, which consumes a lot of energy at low water level and high lift and lacks forecasting ability. When the peak flow comes, it is easy to produce sewage overflow pollution.
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