Is water pressure a force

1.

P= ρ gh=49.035kPa

p= ρ GH (P is the pressure, ρ Is the density of the liquid, the density of water is 1 × 10 ^ 3kg / m ^ 3, G is the acceleration of gravity, take 9.8 N / kg, h is the height from the pressure point to the liquid level)

the water pressure has nothing to do with the amount of water, but only with the depth and density of water The deeper the water is, the higher the pressure is; The higher the density, the greater the water pressure). In real life, the water pressure at home is also affected by the bending degree of the water pipe. The more the bending times are, the less the water pressure will be

General tap water pressure is about 0.7kg, 1MPa is equal to 10kg. 1MPa = 10kg / cm2, MPA MPa is a new unit. According to the standard of tap water supply:

tap water, it is generally considered that 0.1MPa = 10m, and the pressure at the end of the pipe network stipulated by the state is 0.14MPa. More intuitively, 0.1MPa is equivalent to a standard atmospheric pressure, and the pressure at the end of the pipe network is 0.14MPa, which is equivalent to the height of the tap from the water supply tower (pool) of 14m. So, the higher the home is, the lower the water pressure will be

2. The main reason is that the outlet of the main steam pipe of the boiler needs to be added, and the water supply pipe and desuperheating water pipe also need to be added if the valve does not arrive. However, if the valve is complete, it is not necessary. If the power plant is the main pipe, the boiler outlet generally also has the main steam valve, if it is installed, the blind plate may not be needed.

3.

p= ρ GH (P is the pressure, ρ Is the density of the liquid, the density of water is 1 × 10 ^ 3kg / m ^ 3, G is the acceleration of gravity (9.8 N / kg, h is the height from pressure point to liquid level)

Water pressure has nothing to do with the amount of water, but only with the depth and density of water The deeper the water is, the higher the pressure is; The higher the density, the greater the water pressure). In real life, the water pressure at home is also affected by the bending degree of the water pipe. The more the bending times are, the less the water pressure will be

The deeper the water is, the higher the water pressure is

At the same depth, water pressure exerted pressure on all sides

extended data:

includes the measurement of relative pressure and absolute pressure, the former is more common. Pressure measurement is very important in laboratory, hydraulic engineering and various instrial departments. Pressure measuring instruments are called manometers or pressure gauges, which can be divided into three categories according to the principle of action

1. Liquid column manometer: the height of liquid column measured is converted into the pressure of measuring point. There is a simple piezometer which directly uses the height of the liquid column to express the pressure of the measuring point. There are also U-tube manometers or differential manometers partially filled with non-volatile liquid (different from the liquid to be measured). The filling liquid can be mercury, oil or water, depending on the type of liquid to be measured and the pressure (or differential pressure) to be measured

Elastic pressure gauge: it can measure the liquid pressure according to the pressure deformation of elastic element. There are many models

Electrical pressure gauge: the pressure sensor is used to sense the pressure of liquid and convert it into electrical signals (such as voltage, current, capacitance, inctance, etc.), which are amplified, displayed and recorded, and then converted to obtain the pressure. There are many kinds of pressure sensors, such as resistance strain gauge, capacitance, piezoelectric and so on

Compared with other methods, the electric measurement method of pressure has more advantages: the electric signal can be transmitted to a long distance, which is suitable for telemetry and remote control; Electrical measurement is often more accurate and fast; Only the electrical method can measure the fluctuating pressure, while the other two methods can only measure the time average pressure; Electrical signals are usually easier to transfer and are more suitable for direct recording and processing by microcomputer

4.

Calculation formula of water pressure: water pressure P × The bottom area s of the water container

Calculation formula of

water flow: pipe cross section s × The flow rate is v

Various calculation methods of water flow:

1. When the cross-section velocity is known, the cross-section velocity is multiplied by the cross-section area

When the head h and area a of small orifice are known, the discharge q = 0.61 a (2GH) ^ (1 / 2)

When the nozzle head h and nozzle area a are known, the flow Q = 0.81 a (2GH) ^ (1 / 2)

When the pipe length L, specific resistance s and head difference h are known, the pipe flow Q = (H / LS) ^ (1 / 2)

= constant

if the pressure acting on the static liquid boundary increases or decreases, the pressure in any direction at any point inside the liquid will increase or decrease by the same amount. This is Pascal's law of hydrostatic pressure transfer

the total hydrostatic pressure P acting on the plane is equal to the proct of the area a of the plane and the pressure PC at its centroid, i.e. P = PCA= γ HCA, HC are the depth of the plane centroid under the liquid surface. The direction of the total pressure is perpendicular to the action surface

measuring the flow of fluid flowing in a certain channel is called flow measurement. The flow measurement fluid is diverse, such as gas, liquid and mixed fluid; The temperature, pressure and flow of fluid are quite different, and the required measurement accuracy is also different

Therefore, the task of flow measurement is to study various corresponding measurement methods and ensure the correct transmission of flow value according to the measurement purpose, the type of fluid to be measured, the flow state, the measurement place and other measurement conditions

5. Water pressure P = density times 9.8 times height (elevation)

6. Certainly not enough, and even the general pressure is not up, so the high-rise must have a secondary pressure

7. Further down, the greater the pressure of the sea. At present, the most powerful submarine can only dive 500 or 600 meters. Ordinary steel goes deep into the sea, swimming like Mahua in the Northern Zhou Dynasty.

8. Water pressure is the pressure of water on the surrounding objects. Just like atmospheric pressure, liquid has the same pressure as gas
water pressure is related to the depth of water. The greater the water depth is, the greater the pressure is. The water pressure in the deep sea is the pressure of the water on the object in the deep sea.

9. It will affect the water pressure. The inner diameter and curvature of the pipe will affect the water pressure. In the process of water flow, there will be pressure loss. There are too many roundabout places in the water pipe, which seriously affect the flow pressure and velocity.

10. 0.4MPa is raw water. It's normal