Product advantages and basic principles of electric three-way regulating valve to avoid chemical pump pipeline regulating valve plugging and card these methods

Product advantages and basic principles of electric three-way regulating valve to avoid chemical pump pipeline regulating valve plugging and card these methods

The adjustment is generally divided into direct single seat type and direct double seat type. The latter one has large circulation capacity and small unbalance force, which is relatively stable in actual operation, so it is usually especially suitable for places with high flow, ultra-high pressure drop and less leakage. A valve is a control system in a fluid delivery system that provides services such as stopping, adjusting, draining, avoiding backflow, stabilizing pressure pipes, separating or overflow pressure relief. Valves used for the whole system of liquid, from the traditional cut-off valve to the extremely complex automatic control system used in a variety of valves, its types and specifications are very diverse.
Adjusting valve, to adjust the total flow of medium, pressure level instrument. According to the adjustment position data signal, automatic control system valve opening degree, in order to achieve the total material flow, pressure level meter adjustment. The regulating valve consists of two parts: electric actuator or pneumatic actuator and regulating valve. The adjustment is generally divided into direct single seat type and direct double seat type. The latter one has large circulation capacity and small unbalance force, which is relatively stable in actual operation, so it is usually especially suitable for places with high flow, ultra-high pressure drop and less leakage. A valve is a control system in a fluid delivery system that provides services such as stopping, adjusting, draining, avoiding backflow, stabilizing pressure pipes, separating or overflow pressure relief. Valves used for the whole system of liquid, from the traditional cut-off valve to the extremely complex automatic control system used in a variety of valves, its types and specifications are very diverse. Valves are suitable for controlling gas, water, steam, all kinds of corrosive substances, sand, refined oil, liquid metal and radioactive substances and other types of fluid flow.
Nominal pressure conduits range from a few mm dashboard needle valves to 10m industrial line valves. Valve working pressure can be from 1.3×10-3MPa to 1000MPa high pressure. Operating temperature from -269℃ to 1430℃. Different control methods can be used to open and close the valve, such as manual, pneumatic, electric, hydraulic control valve, electric-gas or electric-hydraulic coupling and electromagnetic drive; Can also be under the influence of working pressure, ambient temperature or other sensor data signal, according to the specified position of the setting, or just the corresponding open and close. Nominal diameter or pressure level: PN1.0-32.0MPa, ANSI CLASS 150-1500LB, JIS10-20K Nominal diameter or specification: DN10 ~ 500, NPS 1/2 ~ 36″ Interface mode: flange, butt welding, screw suitable for ambient temperature: -196℃ ~ 700℃ Driving form: manual, helical gear transmission system, pneumatic, electric, hydraulic control valve, steam liquid connected, hydraulic connected valve body material: WCB, ZG1Cr18Ni9Ti, ZG1Cr18Ni12Mo2Ti, CF8(304), CF3(304L), CF8M(316), CF3M(316L), Ti. Using different materials, should be respectively water, steam, refined oil, sodium cyanide, glacial acetic acid, reducing substances, urea solution and other substances. This type of valve in the pipeline should generally level assembly.
Characteristics of electric three-way regulating valve
Electric butterfly valve is an important instrument panel in the process management of industrial control automation. With the increasing level of automation in industrial applications, it is being used more and more in a variety of industrial production fields. Compared with the traditional self-reliant regulating valve, it has certain advantages: environmental protection and energy saving (electromagnetic energy can only be consumed in the work), environmental protection (no carbon emissions), simple and convenient assembly.
Electric three-way regulating valve product advantage
1. The effect of liquid on valve core is in flow opening condition, so the equipment has good stability.
2. In addition to the bushing orientation at the opening of the single flow valve, the side of the valve core and the inner layer of the high pressure gate valve also have a guiding role, with a large range of orientation and reliable work.
3, servo amplifier selection of deep dynamic negative feedback, can improve the adjustment precision.
4, the electric remote controller has a variety of forms, can be widely used in 4 ~ 20mA.DC or 0 ~ 10mA.DC.
5, electronic electric butterfly valve can be directly operated by the voltage signal valve opening degree, without servo amplifier.
6, save automation technology project investment, compared with single seat, double seat or sleeve valve, constitute the same system software can save a valve, simplify the system software, save project investment.
7, bellows seal type on the mobile seat to produce real tightness, blocking liquid exposure.
8, three-way regulating valve is divided into T type L type, the separation of substances and waste pollution, model selection according to the actual working situation to carry out clear.
Avoid the chemical pump pipeline regulating valve plugging and clamping these methods chemical pump can transport critical damping material. Critically damped substances usually vaporize as the temperature rises or the working pressure decreases. In order to prevent the destruction of seal, rotary seal and labyrinth seal due to dry friction because of liquid gasification, the corrosion resistant pump must have the structure of sufficient removal of gas produced in the pump. In the use of installation of centrifugal water pump, service facilities in the pipeline will generally install cut-off valve, regulating valve is the most common total flow regulation valve machine equipment, according to the use and transport of chemical pump can transport critical damping material. Critically damped substances usually vaporize as the temperature rises or the working pressure decreases. In order to prevent the destruction of seal, rotary seal and labyrinth seal due to dry friction because of liquid gasification, the corrosion resistant pump must have the structure of sufficient removal of gas produced in the pump. In the use of installation of centrifugal water pump, service facilities in the pipeline will generally install cut-off valve, regulating valve is the most common total flow regulating valve machine equipment, according to the use and conveyor liquid is not the same, regulating valve phase part can be blocked or stuck, so how to prevent the chemical pump pipe in the regulation valve plugging and card? The following points will give you a brief introduction, I hope to have some help to you.
1. Install pipeline filter method
To calibrate the valve, especially in the very small flow control valve, the throttle valve clearance is very small, there can be a slag in the medium. In case of blockage, install a filter system on the pipe in front of the valve to ensure the smooth completion of the medium. With the detector used to adjust the valve, the detector work on the abnormal, the oil distributor throttle valve port blockage is a common problem. Therefore, when working with the detector, it is necessary to deal with the ignition source. The general choice is to install the vapor filter reducing valve on the air source pipeline before the detector
2. Medium corrosion method
The application of the medium itself erodes mechanical energy, corrodes and sends easy to precipitate, easy to block items, so as to improve the valve plugging effect. Common methods are: change to flow closed type use; Adopt sports style oil circuit plate; The throttle valve port is placed in the most corrosive place. By using this method, attention should be paid to improving the professional abrasion resistance of the throttle valve raw materials.
3, external corrosion method
For some easy to precipitate, containing liquid particles of the medium used in general valve regulation, often blocked in the throttle valve port, dominant place, can be placed at the bottom of the single flow valve plug external corrosion gas and steam. When the valve is blocked or stuck, open the external gas or steam stop valve, and only clean the valve without moving the adjustment valve, so that all the valve is in normal operation.
4, direct connection to angular method
Direct connection is inverted S circulation, complex flow path, upper and lower cavity overcurrent protection, for the precipitation of the medium issued a region. Angle connection, the medium is like over 90℃ elbow, good corrosion characteristics, small overcurrent protection, easy to design into streamline. Therefore, the use of directly connected regulating valves to cause minor obstruction should be changed to angular valve use.
5, expansion throttle clearance method
Such as liquid fine particles in the medium or corroded fake welding and rust in the pipeline due to not on the throttle port caused by blocking, stuck and other common problems, can be changed to the throttle valve clearance larger throttle valve parts – throttle valve covers an area for indoor ventilation, open type valve heart, socket wrench, because the throttle valve covers an area concentrated rather than the circle throughout, Common problems can easily be found in ground cover plants. If it is a single, two-seat valve, it can change the hydraulic piston pump valve heart to “V” shaped port valve heart, or change to sleeve valve, etc.
6. Cleaning method
The fake welding, rust and debris in the pipeline cause blockage or jam at the throttle valve port, the dominant part and the balance hole side of the single flow valve, so that the valve core slope and the dominant surface lead to injury and scratches, and the protruding surface leads to emboweling, etc. This is often caused early in life after a new system is put into use and maintained. This is a common common problem. In this case, it is necessary to remove the removal of slag, such as the surface is damaged should also be ground; Open the bottom plug together to flush out the slag falling into the single flow valve from the balance hole and clean the line. Before putting into use, let the regulating valve open fully, and the medium flow for a period of time before all normal operation.