Thermomicrobium

 

(57) Abstract:

The invention relates to the field of automatic control and can be used in the oil industry and other sectors of the economy. In thermohydrometer to regulate oil-water flows using two immiscible liquids with different specific gravities, the more light from them is used for the formation of a steam environment with a given pressure, and more severe and non-flammable fluid for transmission of this pressure through the hydraulic connection to the membrane actuator. 1 Il.

A device for the individual actuator valve actuator working with small performance. The application of this device is not limited by climatic conditions. It is necessary for the automation of the processes regulating water flows in the fields of both Northern and southern areas.

Known hydraulic actuators, consisting of a cylinder and mount it to the base plate and the regulatory authority. Hydraulic actuators are designed to control the working bodies of the rotary Il the th and the oil industry.

The main advantage of hydraulic actuators produce high positioning forces, the disadvantages of the necessity of creating a special hydraulic system of the power and complexity of service.

Also known pneumatic actuators piston type, consisting of a pneumatic cylinder and piston rod. Such actuators are called servo pneumatic actuators.

The advantages of pneumatic actuators simple structure, low cost, fire and explosion safety, the disadvantages of the limited distance between the actuator and regulating device, as well as the need to create a system of compressed air supply to the high degree of drying, especially for the Northern regions.

Closest to the claimed is thermomicrobium for automatic control of pressure, flow or temperature. It contains a diaphragm actuator rod membrane which is connected with the regulator partially filled with the working fluid chamber with a developed surface heat exchange with the external environment, located in the liquid heating element, connected to the guide device, includes defining and measuring devices, in the device has a sensor controlled parameter. In addition, namebrand cavity of the actuator of thermohydrologic is hydraulically connected with the intermediate chamber filled with an intermediate fluid, accept the pressure of the working fluid.

The aim of the invention is the improvement of consumer properties of the actuator by providing the possibility of its use in conjunction with standard pneumatic devices by transferring pressure from a gas (steam) environment on the membrane along the gas (vapor) liquid membrane.

This device used two immiscible liquids with different specific gravities, the more light from them is used to generate steam environment with a given pressure, and more severe and inflammable fluid to transfer pressure in the hydraulic system due to the membrane actuator.

The objective is achieved by the fact that thermomicrobium contains membrane actuator rod membrane which is connected with the regulator partially filled with the working fluid chamber with a developed surface is management pressure in the chamber, containing block power to the heating element, and the associated unit comparing the reference signal with the signal of the pressure sensor, while namebrand cavity membrane actuator is hydraulically connected with the intermediate chamber filled with an intermediate fluid, accept the pressure of the working fluid, in addition, the camera with the working fluid and the intermediate chamber is structurally United, the working fluid has a boiling point above 65aboutWith, as an intermediate fluid taken trudnovosplamenjaemy liquid that is not miscible with the working fluid directly adjacent to it and having a higher density, while the camera is in an open top Cup with perforated walls, a heating element located inside the Cup, the unit power of the heating element is connected with the latter through a fuse installed in the immediate vicinity of the upper edge of the heating element, but the camera on the outside of the glass posted by perforated partitions or coarse gasket.

The boiling point of the working fluid is selected from the condition of impossibility of its boiling under the EB did not require a lot of power. As this liquid can be used normal hexane.

As fluid pressure transfer from the camera to the membrane thermo actuators can be used in different types of glycols, diluted with water to obtain solutions with the desired freezing point.

The presence of temperature feedback in the power of one-to-one connection pressure on the membrane and the temperature of the working fluid allows you to standardize this device is similar to electropneumatically.

The drawing shows a diagram of thermohydrologic.

Thermomicrobium contains membrane actuator 1 with membrane 2, spring spring 3 is connected by a tube 4 with camera 5 with a developed surface heat exchange with the external environment in which the selected zone 6 vapor phase of the working fluid, the layer 7 of the liquid phase of the working fluid, the layer 8 of the liquid, immiscible with the liquid phase of the working fluid and having a greater specific gravity, heating element 9 mounted on the upper edge of the fuse 10, the open top of the Cup 11 with perforated walls, a perforated partition 12, a sensor 13 of the pressure block 14 include stroke unit 15 comparison and the source 18 of the power of the heater is connected to the block 14 of the heater.

Thermomicrobium works as follows.

To the input of the comparison unit 15 receives the signal 17 from the regulator and the signal from the sensor 13 and the pressure in the chamber 5 electrohydroblock. After scaling these signals, if necessary, they are compared. According to the result of comparison of the signal for the operation on or off the heating element 9, which is implemented in the block 14. If the pressure in the chamber 5 below, which is determined by the control signal 17 supplied to the comparison unit 15, then turns on the heating element 9. The liquid inside the Cup 11 is heated and partially passes into the vapour phase, increasing the pressure in the chamber 5. If the pressure has exceeded the configured, then the heater is switched off, the steam in zone 6 is cooled by a surface of the chamber 5 and is condensed. As a result, the pressure in the chamber 5 is reduced. Any change in pressure in the chamber 5 through the pipe 4 is transmitted to the diaphragm 2 of the actuator 1 that you want to implement.

In the process, the inevitable emergence of a different kind of seal defects or cracks in the membrane of ispolniteltnoe the fluid level in the chamber 5 is reduced, the heating element 9 is in the vapor phase, which may cause it to overheat and create a fire and explosion hazard situation. To overcome this, in the circuit of heater is installed fuse 10, the casing of which is placed in the upper part of the heater. The temperature of its melting designed in such a way that as soon as the liquid level falls below the upper edge of the heater, the fuse melts, disconnects the power supply circuit of the heater and thereby prevents the occurrence of inflammable situation.

Thus, the claimed technical solution differs from the known higher consumer properties, including the accuracy of the conversion control signal to the pressure, the ability to work with a model membrane actuators, energy-efficient design solution and ensuring explosion and fire safety.

THERMOMICROBIUM containing membrane actuator rod membrane which is connected with the regulator partially filled with the working fluid chamber with a developed surface heat exchange with the external environment, located in the working fluid heating element, connected the TA and associated unit comparing the reference signal with the signal of the pressure sensor, this namebrand cavity membrane actuator is hydraulically connected with the intermediate chamber filled with an intermediate fluid, accept the pressure of the working fluid, wherein the chamber with the working fluid and the intermediate chamber is structurally United, the working fluid has a boiling point above 65oWith, as an intermediate fluid taken trudnovosplamenjaemy liquid that is not miscible with the working fluid directly adjacent region and having a higher density, while the camera is in an open top Cup with perforated walls, a heating element located inside the Cup, the unit power of the heating element is connected with the latter through a fuse installed in the immediate vicinity of the upper edge of the heating element, but the camera on the outside of the glass posted by perforated partitions or coarse gasket.

 

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