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Yuhuan Xianyi Pipe Industry Co., Ltd.

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01

2023

How to install electric gate valve?

When using equipment, scientific installation is required. If the installation method is wrong, then the performance of the equipment is difficult to reflect, but also may cause harm to the equipment, so how to install the electric gate valve.

01

2023

What are the advantages of automatic control ball valve?

Control ball valve in many fields have been widely used, nature can not be separated from its unique advantages, this ball valve has the following excellent advantages:

01

2023

What is the difference between globe valve and gate valve?

The valve is a control component in the fluid delivery system, with the functions of cut-off, regulation, diversion, prevention of backflow, pressure stabilization, diversion or overflow pressure relief. Valves for fluid control systems, from the most simple cut-off valve to a very complex automatic control system used in a variety of valves, its varieties and specifications quite a wide range.

07

2022

China's valve industry has become a must for many industries in the production process

In recent years, China's valve industry has entered a period of rapid development, and the threshold of the valve industry has risen to become Asia's largest valve processing center and one of the world's largest valve markets. However, the per capita consumption level of China's valve products is not high in the world, currently only $22 per capita. However, with the rise of power station valves, chemical valves, valve building materials and food valves, we can see that the valve industry has broad prospects and the market is attractive.

01

2022

Energy-saving regulating valve Low energy consumption Development direction

Energy saving to reduce energy consumption, improve energy efficiency is a development direction of the control valve. There are mainly the following development directions. 1. The use of low pressure drop ratio of the control valve. The proportion of the control valve in the entire system pressure drop is reduced, thereby reducing energy consumption. Therefore, the design of low pressure drop ratio of the control valve is one of the development directions, and the other development direction is the use of low impedance control valve. For example, a butterfly valve, an eccentric rotary valve, and the like are used. 2, the use of self-regulating valve: for example, the direct use of the pressure of the medium after the valve to form a self-control system, with the energy of the controlled medium to achieve pressure control after the valve. 3, the use of electric actuator control valve. Pneumatic actuators need to have a certain pressure during the operation of the entire control valve. Although small consumption amplifiers can be used, the gas consumption is still huge over time. The use of electric actuators, when changing the opening of the regulating valve, power supply is required, and power supply can no longer be supplied when the required opening is reached. Therefore, from the perspective of energy saving, electric actuators have obvious energy-saving advantages over pneumatic actuators. 4. Adopt piezoelectric regulating valve. The piezoelectric valve is used in the intelligent electric valve positioner, and the gas source is consumed only when the output signal increases. 5. The valve core with balanced structure is adopted to reduce the thrust or push torque of the actuator, reduce the air chamber of the membrane head and reduce the energy demand. 6, the use of frequency control technology instead of regulating valve. For the application of high voltage drop ratio, if the energy consumption is very large, the frequency conversion speed control technology can be adopted, and the frequency converter can be used to change the speed of the relevant operating equipment to reduce energy consumption. Environmental pollution has become a public hazard, control valve on the environment pollution mainly control valve noise and control valve leakage. Among them, the control valve noise pollution to the environment is very serious. 1. Reduce the noise of the regulating valve. Various methods to reduce the noise of the control valve are developed, including the design of the control valve flow path to the design of the control valve trim, the analysis of the noise source to the measures to reduce the noise. The main design of noise reduction control valve and noise reduction control valve valve trim; reasonable distribution of pressure drop, the use of external noise reduction measures, such as increasing isolation, the use of silencers. 2. Reduce the air pollution of the regulating valve. Control valve of the air pollution refers to the control valve "run", "take", "drop", "leak", these leaks not only cause waste of materials or products, but also cause pollution to the atmospheric environment, and sometimes, will cause casualties or equipment explosion and other accidents. Therefore, the development of control valve packing structure and packing type, the development of the control valve seal will be an important research topic in the future. Computer science, control theory and automation instrumentation, such as the development of high-tech science and technology to promote the development of the control valve, for example, the field bus control valve and intelligent valve positioner development, digital communication in the control valve to achieve. The development of the control valve has also promoted the development of other science and technology, such as the study of anti-corrosion materials, the study of methods to weaken and reduce noise, and the study of fluid dynamics. With the development of field bus technology, control valve will also be open, intelligent and more reliable, it will work with other industrial automation instruments and computer control devices together, so that the industrial production process control function is more perfect, the control precision is higher, the control effect is more obvious, and play a more important role in the modernization of our country.

11

2021

Electric control valve how to control the various factors of the pipeline medium

Electric control valve is to use the power source to drive the electric actuator and then drive the valve to throttle, it is an important implementation unit instrument in industrial automation process control. With the increasing degree of automation in the industrial field, it is being used more and more in various industrial production fields. Compared with the traditional pressure regulating valve series, the electric regulating valve has obvious advantages: the electric single-seat regulating valve is energy-saving, environmentally friendly, and the installation is more quick and convenient. The electric control valve drives the differential pressure control valve series by receiving the signal from the industrial automation control system to change the cross-sectional area between the valve core and the valve seat to control the flow, temperature, pressure and other process parameters of the pipeline medium to realize the automatic adjustment function. The electric actuator of the electric sleeve control valve is an electronic integrated structure with servo amplifier. The control signal and power supply of the field and pneumatic grinding control valve series can control the valve opening to achieve the adjustment of pressure, flow, liquid level, temperature and other parameters. Note: In order to ensure that the control valve can work normally when driving, and the safe operation of the system, the new valve before installation, should first check the valve on the nameplate mark is consistent with the design requirements. Article 3: If the control valve in the original system has been overhauled, in addition to the above-mentioned items, it should also check the tightness of the stuffing box and joints of the old valve. Fourth: control valve in the field use, many often not because of the control valve itself caused by the quality, but the electric control valve installation caused by improper use, such as: installation environment, installation position and direction or improper or pipeline is not clean and other reasons. Article 1: The regulating valve belongs to the field instrument, and the ambient temperature should be in the range of -25~60 ℃ and the relative humidity is 95%. If it is installed in the open air or high temperature occasions, should take waterproof, cooling measures. Where there is a source, keep away from the source or increase anti-vibration measures. The second: electric control valve should generally be installed vertically, under special circumstances can be tilted, such as the tilt angle is large or the valve itself is too heavy on the valve should be increased support protection. Article 3: The installation of the control valve pipeline is generally not too high from the ground or floor. When the pipeline height is greater than 2m, the platform should be set as much as possible to facilitate the operation of the hand wheel and facilitate maintenance. Fourth: electric control valve installation before the pipeline cleaning, remove dirt and welding slag. After installation, in order to ensure that no impurities remain in the valve body, the valve should be cleaned again, that is, all valves should be opened when passing into the medium to avoid impurities stuck. After using the handwheel mechanism, it should be restored to the original neutral position. Article 5: In order to enable the electric control valve to continue the production process in the event of failure or maintenance, the control valve should be added with a bypass pipeline.

11

2021

Manual valve in use need to pay attention to the problem

Manual valve is the most widely used valve, its handwheel or handle, is in accordance with the ordinary manpower to design, taking into account the strength of the sealing surface and the necessary closing force. Therefore, you cannot use long levers or long slabs to move. Some people are accustomed to using spenders, and they should be strictly careful not to use too much force, otherwise it is easy to damage the sealing surface, or the board breaks the handwheel and handle.

11

2021

Gate valve installation and use

Gate valve is a block valve, sealing performance is not as good as the stop valve. The main "duty" of the gate valve is to "cut off the flow", as well as to a small resistance: "freewheeling". It should not be used to adjust the flow and pressure of the medium, such as long-term adjustment, the sealing surface is easy to be washed and worn by the medium, affecting the sealing performance.

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