What is the principle of the valve of the heating company

The valve of the heating company is to adjust the flow rate by adjusting the opening of the valve core.

Control valves are used to regulate the flow, pressure and level of the medium. According to the signal of the adjustment part, the opening of the valve is automatically controlled, so as to achieve the adjustment of medium flow, pressure and liquid level.

By receiving the control signal output by the control unit, the final control element changes the process parameters such as medium flow, pressure, temperature, and liquid level with the help of dynamic operation. It is generally composed of an actuator and a valve. According to the stroke characteristics, the control valve can be divided into linear stroke and angular stroke; According to the power used by the actuator, it is divided into linear characteristics, equal percentage characteristics and parabola according to its functions and characteristics.

There are three characteristics. The control valve is suitable for air, water, steam, various corrosive media, mud, oil and other media.

The control valve is used to adjust the flow, pressure and liquid level of the medium in the section of the intestinal test. According to the signal of the adjustment part, the opening of the valve is automatically controlled, so as to achieve the adjustment of medium flow, pressure and liquid level. The control valve is divided into electric control valves.

Pneumatic control valves and hydraulic control valves, etc.

The regulating valve is actuated by an electric actuator.

or pneumatic actuator and regulating valve. The latter has the characteristics of large flow capacity, small unbalance and stable operation, so it is usually especially suitable for occasions with large flow rate, high pressure drop and less leakage.

There are many types of valves in the heating company, and at present, multi-purpose gate valves, globe valves, ball valves, and butterfly valves are used to control the on/off of water through the valve core.

Here are some of the well-known brands recognized in the valve industry, which are widely recognized and have a high reputation. While rankings may vary depending on time and market conditions, the following brands are generally considered to be among the top brands in the valve industry:

The following are the top ten domestic first-line valve brand manufacturers in 2022-2023, but for reference only: Suzhou Neway Valve Co., Ltd., Shanghai Guanlong Valve Machinery, Shanghai Qizhong Valve Manufacturing, Sanhua, Su Yan, Shentong, Su Valve, Nanfang, Jiang.

First, the word Yao. The above manufacturers are only estimates and references, and the specific situation may vary or fluctuate at any time due to changes in a series of factors such as changes in the market, the size of the competition pattern, and the stability of product quality. As an indispensable key device in industrial production and civil facilities, the quality and reputation of the valve brand directly affect the satisfaction and trust of users.

These brands are known in the valve industry for their innovative technology, high-quality products and reliability. It is important to note that the market and industry are evolving rapidly, and different rankings may vary depending on time and region. For the most up-to-date ranking information, it is recommended to refer to industry reports, professional organizations or market research data for more detailed and accurate information.

You take a water bottle, and the lid is used to experiment, and you turn it on and off.

Answer: The valves commonly used in the heating system are: globe valve, gate valve (or gate valve), butterfly valve, ball valve, check valve (check valve), safety valve, pressure reducing valve, pressure stabilizing valve, balance valve, regulating valve and a variety of self-operated control valves and electric control valves.

Among them, the globe valve: used to cut off the flow of the medium, has a certain tempering performance, the pressure loss is large, and is commonly used in the heating system to cut off the flow of steam, and the gate valve with "J" indicates the globe valve in the valve model: it is used to cut off the flow of the medium, when the valve is fully opened, the medium can pass through the general pipe without changing the flow direction, so the pressure loss is small.

The regulation performance of the gate valve is very poor, and the "z" is used in the valve model to indicate the gate valve.

Check valve: also known as check valve or check valve, it allows the medium to flow in one direction, if the pressure behind the valve is higher than the pressure before the valve, the check valve will automatically close. There are many types of check valves, mainly including:

Lifting, swinging, etc. The lifting valve has a large pressure loss, so it is rarely used in the new heat exchange station system. It is indicated by an "H" in the valve model.

Butterfly valve: by changing the angle of the disc to achieve adjustment and switching, because the disc is always in the middle of the flowing medium, so the resistance formed is larger, so it is rarely used. It is indicated by a "D" in the valve model.

Safety valve: It is mainly used to relieve pressure when the medium is overpressurized to protect equipment and systems. In some cases, the micro-opening hydraulic relief valve has been modified to be used as a system pressure regulator. There are many structural forms of safety valves, which are indicated by "Y" in the valve model. Center.

Heat net butterfly valve, flue air duct valve.

When the handwheel is rotated, the large and small valve stems drive the upper and lower stubble plates, compress the pipe sleeve, and close at the same time, and open on the contrary. In this way, the ram completes the valve opening and closing work by reciprocating up and down between the guide pillars.