Shut-off control valve with high pressure electric drive. Electric drives for control valves. Rotary control valves for steam and gas with electric drive

A shut-off and control valve with an electric drive belongs to indirect-acting pipeline fittings. An external energy source is used to regulate it. IN in this case this is electrical energy.

Control valves, controlled from a distance and capable of withstanding significant pressure, are used in transportation pipelines industrial value. Electrically driven valves are in demand in systems where flow control is carried out at a distance of automatic mode.

A valve (domestic - faucet or faucet) on a pipeline is a special device with which the flow is regulated, completely blocked or opened.

A valve that opens and closes using an electric drive is, in its essence and functions, little different from conventional valves. It also serves to regulate or block the flow in the pipe.

The difference is in the mechanism of its action, in power, dimensions, and in the principle of control. If a household control valve operates on the principle of mechanical application of force from the outside (a person turns the faucet handle), then an electric valve operates on electricity.

An electrically actuated valve can be:

• shut-off - direct or reverse complete blocking of the flow in the main line;
• shut-off and regulating – complete or partial blocking of the flow, with the ability to adjust its intensity.

Note! Special meaning have valves with electric drive for mainline transportation of petroleum products, natural gas, coolant. They allow you to remotely, in real time, control flows from a distance or set the operation to automatically set parameters.

In addition to electric valves, the following valves can be controlled remotely:

• pneumatic - their mechanism runs on compressed gas;
• electromagnetic (gas) valves - the mechanism opens from an electrical impulse and closes automatically when the power supply is interrupted.

Material:
Wednesday:
Media pressure: 16-40 bar
Ambient temperature:-40...+425°
Drive unit: electric 1x220 V; 50 Hz

Material: body, cover - carbon steel; seal - stainless steel
Wednesday: air, water, steam, petroleum products, oils, etc.
Media pressure: 16-40 bar
Ambient temperature:-40...+425°
Drive unit: electric 1x220 V; 50 Hz

The task of the device is to block and regulate the characteristics of the flow of liquid or gas, and thus quickly eliminate the emergency situation.

Shut-off valves with electric drive are actively used in the gas industry, municipal structures, agricultural enterprises and the oil refining industry.

Advantages of motorized valves

There are many advantages to such fittings. These include:

• reliability;
• simplicity of design;
• guarantee of uninterrupted operation;
• long operating time;
• small valve dimensions;
• high power;
• high speed of opening of the flow of the working medium, or vice versa, its blocking;
• withstand even significant, sudden pressure changes;
• have a safety function and a wide operating temperature range;
• economical energy consumption;
• ability to perform necessary work with the valve remotely (using a control panel).

The device is energy-saving equipment, as it has the ability to switch to two power levels. In addition, such mechanisms absolutely comply with all standards for precise regulation of water temperature, and are used to supply working environment in heating systems.

Design and operating features of an electric valve

An electric valve for water provides optimal pressure of the working medium in any technological system or in a certain section of the pipeline. The valve has the following equipment:

• The actuator is in the form of an electric drive.
• Control valve (acting on a liquid or gas mass.

All parts of the device are functionally dependent on each other. Despite the simplicity of the design, the valve can continuously monitor the characteristics of the liquid and prevent an emergency in a timely manner by activating the locking equipment in a split second. All this reliably protects the pipeline system from hydraulic shocks and prevents the backflow of the working medium.

Attention: when installing the adjusting mechanism, it is important that the direction of the mass of the working medium corresponds to the arrows shown on the valve body.

When installing the adjusting mechanism, it is necessary to trace the direction of the mass of water or gas along the arrows that are shown on the body.

The complexity of engineering systems increases every year, the requirements for their energy efficiency, reliability, and safety are increasing, which dictates the use of modern pipeline fittings, first of all, regulatory.

In this article we will look at the main types of control valves that play an important role in solving the above problems, and also analyze some of the features of control valves supplied by the ADL Company with PS-Automation electric drives (Germany).

Direct-acting control pipeline valves, as is known, use the energy of the same medium to regulate the flow parameters of the working medium in a certain section of the technological system or pipeline. Due to this, the advantages of this type of valve are: independence from external energy sources, control accuracy, and reliability. However, there is also a drawback that often greatly complicates and limits the use of direct-acting regulators - the lack of flexibility. In other words, each controller is designed to be used within a very narrow range of system parameters. For example, if we are using a direct acting pressure regulator to regulate an output pressure of 5 bar, then to change the setting to, for example, 10 bar (all other parameters unchanged), we will most likely need a completely different valve.

The following types of direct acting regulators are available:

• pressure reducing valves (downstream pressure regulators), designed to maintain a constant output pressure regardless of changes in inlet pressure or flow;
• bypass valves (pressure regulators “upstream”), ensuring the maintenance of constant pressure in front of the valve by bypassing part of the medium;
• Differential pressure regulators, used to maintain a constant pressure difference between two given points systems;
• special regulators (pressure tracking regulators, hydraulic shock absorbers, etc.)

Indirect control valves, on the contrary, use external energy, for example electricity (electric drive), compressed gas energy (pneumatic drive), etc. The control signal for such regulators is also external. The signal comes from a logical device that directly implements control algorithms in the system. In this way, indirect-acting control valves provide much-needed flexibility. For example, to regulate different pressure values ​​or even to regulate other parameters, in some cases the same control valve with a drive can be used. Of course, systems that use indirect-acting regulators are much more complex than systems using direct-acting regulators, which often negatively affects both the speed of regulation and reliability indicators. However, modern electric drives eliminate these disadvantages. Such electric drives include, in particular, drives manufactured by PS-Automation GmbH (Germany), exclusively supplied to the Russian market by the ADL Company.

So, linear electric actuators are used to control control valves. Let's take a closer look at the features of linear electric drives of the PSL and PSL-AMS series produced by PS-Automation (Germany).

Electric drives of the PSL series are designed on a modular basis, which allows you to get maximum functionality at minimal cost. PSL actuators meet all the requirements for control valves: precise positioning, robustness, reliability and durability, even under high loads. The basis is a standard drive with three-position control and the necessary set of protection functions. However, the drive characteristics can vary greatly depending on the installation of additional options. For example, installing a positioner board and potentiometer on the actuator allows the actuator to be controlled by an analog signal (for example, 4...20 mA, 2-10 V, etc.). In accordance with the customer’s tasks, ADL Company specialists modify electric drives of control valves, make the necessary adjustments and testing. An important advantage is that the functionality of the drive can be changed after it has been delivered and even installed in the system. Most drive options can be purchased separately, including:

• positioner with active output signal;
• potentiometer;
• position signal converter;
• additional limit switches;
• heating resistor, etc.

To increase the reliability of the system, PSL electric drives are equipped with the following protection functions:

• automatic shutdown of the drive when reaching the extreme position;
• automatic shutdown of the drive when maximum linear force is reached;
• automatic shutdown of the drive if there is a risk of overheating of the motor windings;
• the ability to determine positioning in the event of a break in the supply or control network; Moreover, this position (normally open, normally closed, current) can be changed directly on the pipeline using a switch.
• manual override.

The PSL-AMS series intelligent linear actuators have advanced electronic circuits microprocessor-based with memory card, which ensures reliable and precise control, as well as simple commissioning and easy configuration.

Electric current and voltage control functions allow you to customize drive operation to suit specific system conditions. Thus, through special communication software PSCS (supplied as standard), you can set various drive operating parameters, correction data, perform diagnostics and much more.

Intelligent electric drives of the PSL-AMS series also have a number of additional options, such as: a local control function on the housing, which allows you to configure the operation of the drive at the installation site, as well as block access to its control, an integrated PID process controller that monitors and controls the specified parameters work with the ability to program any non-standard drive behavior, intelligent control protocols (HART, Ethernet, Bluetooth, etc.), etc.

All of the above series of linear electric drives have a protection class of IP65 or IP67 and can be manufactured in a metal case.

PS-Automation electric actuators are successfully used by the ADL Company to complete control valves of its own and European production. The range of control valves is represented by two-way single-seated valves (both balanced and unbalanced designs) and three-way valves in the range of diameters from DN 15 to 300 mm, pressures from PN 16 to 40 bar, for media with temperatures up to 300 °C.

It is worth especially noting that the installation of the electric drive on the control valve, its configuration and testing are carried out at the production complex of our company, which guarantees operability, minimum delivery times, and also allows us to manufacture a special version of the control valve to meet the requirements of a specific system.

Below we present only the most basic characteristics of control valves supplied by our company.

• Valve capacity: 1.7…1030 m3/h;
• Body material: brass, cast iron, carbon steel, stainless steel;
• Drive supply voltage: 10, 24, 110, 220, 380V;
• Control signal: three-position, analog, HART, etc.;
• Linear force of the electric drive: 1.000…25.000 N;
• Ambient temperature: -40..+80°C;

Control valves of both direct and indirect action from the ADL Company have many years of operating experience at housing and communal services facilities and are successfully used by leading enterprises in various industries. Among the objects where our control valves are installed we can highlight: the complex of high-rise buildings "Capital City" of the Moscow City business center, the Cathedral of Christ the Savior, the Reutov heating network and many others.

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Ventilation damper drive– electromechanical equipment, consisting of an electric motor, a spring (without reversible ones), transmission mechanisms (reducer, gears), a board and a mounting socket, assembled in a small metal or plastic case.

Ventilation system drives are installed on the damper shaft or to regulate the position of the damper and perform security functions. Electric valve actuators OZK can work autonomously, according to standard settings, or be controlled remotely by an operator.

The company PANORAMAVENT LLC offers one of the largest catalogs ventilation servo drives which will help solve most challenges facing organizations working in the field of ventilation and air conditioning.

Our catalog includes electric drives with different types controls (2/3-position and continuously variable) and operating principle (with and without return spring), designed for for various purposes and valve size.

You can choose the model you are interested in presented on the website, or send a request by mail indicating the valve type (or), damper size and estimated budget. Our manager will select the necessary model for you or analogue of Belimo and send Commercial offer. We look forward to collaborating!

Table of Belimo analogues for fire and smoke dampers

Electric actuators for fire dampers (normally open)

Fire damper drives used for regulation air damper valve systems fire ventilation. If a fire occurs in the room, using an electric drive, the air damper fire damper closes, forming a barrier to fire and smoke, thereby separating the danger zone from other rooms.

spring return servo drives:

• Control: Two-position (open/closed)

Reversible electric actuators for fire dampers (normally closed) and smoke dampers

Smoke exhaust valve drives used for regulation air damper valves of smoke ventilation systems. In case of fire and smoke in the room, thanks to the electric drive, the air damper fire retardant valve (NZ) opens, allowing inflow fresh air to the premises.

Basic General characteristics servo drives without spring return:

• Rated voltage 24V ~/= or 230V ~
• Control: Two-position (open/closed) or three-position
• 2 built-in auxiliary switches
• without spring return mechanism

Electric drives for air valves and air spring dampers

Drives air valves with spring return are designed to automate the damper control process and simultaneously perform security functions (smoke or freeze protection) in systems general ventilation and conditioning.

And dampers are devices for regulating flow in ventilation, heating and air conditioning systems. Their scope of application covers various areas human activity - from household devices to industrial systems fire safety. The functioning of these elements is ensured by drives, the most effective of which are electric.

Types of electric drives

Different types of valves require variety in the designs of the elements used in their composition. Electric control actuators for valves are classified according to the following characteristics:

• Principle of operation. Based on this indicator, two types of devices are distinguished: thermoelectric and geared. The former are more common in household ventilation systems; in their operation, the main role is played by the heating of the electric coil, which provokes an increase in the temperature of the working substance of the bellows. The expansion of the substance creates pressure, under the influence of which the valve stem moves. Gear drives operate through a gear transmission, which transmits force from the motor to the valve.
• Voltage value. It is selected depending on the electrical network in which the device will operate. For on-board system vehicle– 24V, for a fixed network – 220V.
• Working effort. This indicator varies in the range from 90N to 5000N, depending on the modification of the device.
  vPerformance. Depending on the value of this parameter, fast (3-4 seconds) and slow (8-15 seconds) drives are distinguished.
• Valve attachment type. The drive configuration corresponds to a specific type of valve; the connection is made using clamps and nuts, the size of which must be selected according to the existing valve.
• Complete with protective devices. To ensure that the valve operates in an extreme situation (power outage), a return spring is used, the energy reserve in which allows the damper to be returned to the protective position even if the power supply is interrupted. Models not equipped with such springs can only be activated manually in the absence of electricity.
• Purpose. On this basis, a distinction is made between electric actuators for fire dampers and electric actuators for valves of smoke removal systems. The first ones are equipped with a return spring and are made in a fire-resistant housing, since they are intended to be used in emergency situations. Such devices are necessary to prevent the spread of smoke and fire through the ventilation system and will play a role in the event of a fire. important role in preserving people's lives and health.

Range of electric drives

In our catalog you can select and buy at competitive prices electric air valve actuators produced by world leaders in the industry:
Belimo is a Swiss company specializing in the production of electric drives for HVAC systems. This brand is characterized by comprehensive operational quality control during the production process and rigorous testing finished products. Buying a Belimo electric drive means receiving a device with a manufacturer’s warranty for 5 years.
Lufberg is a group of companies headquartered in Switzerland. Unites a number of manufacturers and suppliers of elements and ready-made systems HVAC systems that meet global standards and are perfectly adapted to local markets. It has production in Russia, which allows it to combine Swiss quality with the income level of Russian consumers. The warranty period for all Lufberg products is 5 years.
Vilmann- another Swiss giant with its own design, testing and production base. Vilmannn electric drives are produced in Germany, China and Russia and meet the requirements European standards quality and adapted to the needs of Russian consumers. The company's priorities are a flexible pricing policy and cost-effectiveness of manufactured products without loss of quality.