Flow sensor independent of different inlet feeds and resistant to contamination

Abstract

By means of a liquid guide located on the body, which is situated inside a cylindrical body and has guide blades (7–8) at one end, it is used to measure the flow of liquid in only one direction. The liquid inlet guides (4) inside the body (9) direct the flow towards the impeller (3), and since the form of the guide blades (7–8) on the outlet bracket (5) of the impeller (3) is the same as the form of the impeller (3), in reverse flow the blades do not interact between each other to create a rotation. At the same time, in said invention, since the blade (8) angles of the outlet flow guide are in the same direction as the blade angles of the impeller (3), in the event of reverse flow of the liquid inside the device, the guide remains stationary, thereby not generating a signal during reverse flow. The working principle of said invention is based on counting the signal pulses generated depending on the amount of liquid passing through the sensor. The counted pulses are converted into a flow rate in litres per minute with the aid of a predetermined flow formula. This formula is determined depending on the design of the sensor and may vary according to the sensitivity of the sensor. An increase in the flow rate causes a proportional increase in the pulse frequency. The sensor measures this frequency to determine the flow rate and accordingly calculates the amount of liquid passing per unit time in the most accurate way. In said invention, the absence of an additional magnet in the impeller (3) and the difference from traditional flow sensors existing in the state of the art due to the magnetic field property originating from the impeller (3) itself is characterised. In said invention, by leaving only a very small gap between the inlet mouth of the bearing (1) on the inlet side of the impeller (3) and the impeller (3) itself, the entry of particles carried by the fluid into the bearing (1) region is prevented. At the same time, said invention is related to obtaining the same measurements in different types of installation diameters, and, as long as the inlet installation cross-sectional area is not smaller than the cross-sectional area of the flow meter, measurement with the same sensitivity is obtained from the flow meter.

Description

FLOW SENSOR INDEPENDENT OF DIFFERENT INLET FEEDS AND RESISTANT TO CONTAMINATIONTechnical Field of the Invention

[0001] In daily living environments, flow sensors, which are designed to measure the volumetric or mass flow rate of a fluid regardless of the thermodynamic properties of the liquid, without affecting other parameters of the system, are widely used in both the industrial field and in systems used by end users, and are characterised by being devices used in many places from the combi boilers in our homes to large machines in factories, accurately measuring the flow rate without the influence of factors such as the temperature or pressure of the liquid. They are used in a wide range of applications, from industrial processes to systems used by end users. Examples include the control and measurement of the flow rate of liquids used in chemical reactions, the monitoring and control of the flow of petroleum and natural gas in pipelines, and the control of the flow rates of liquids in pharmaceutical manufacturing processes.Brief Description of Invention

[0002] The present invention is used for measuring fluids / liquids in devices that require a flow measurement system and is a type of flow measurement sensor located within a cylindrical body, serving to measure the unidirectional flow of a liquid. Flow meters are precise devices that measure the velocity and flow rate of fluids using a magnetic field and are capable of accurately measuring the flow rate of liquids with different viscosities and densities, providing measurement with high accuracy and reliability.

[0003] The impeller (3) located therein rotates by means of the flowing liquid, and the speed of this rotation generates a square wave signal with a frequency proportional to the flow rate of the liquid, by means of a sensor detecting a change in the magnetic field. The operating principle is based on the liquid striking the impeller (3) through the guides and the data obtained from the rotation of the impeller (3) being converted into electrical signals.

[0004] Said invention is a flow meter made of thermoplastic material, comprising the body (9), the impeller (3), the outlet bracket (5), and the shaft (6), and relates to being a highly precise, durable, easy-to-assemble, economical, and longer-lasting flow sensor.State of the Art

[0005] In the state of the art, flow meters are devices of critical importance that must provide accurate and reliable measurements in industry. However, flow meters may encounter problems such as the ingress of particles into the system and the formation of contamination over time. This can lead to blockages, resulting in loss of measurement accuracy / reliability. Furthermore, due to these blockages, situations such as damage to other components and malfunction of the device may occur. With the special structure formed in said invention, the entry of particles into the bearing area where the components operate on each other is prevented, thereby eliminating such contamination problems that may occur in said systems.

[0006] Another problem encountered in the state of the art in flow meters is the reduction in measurement accuracy and precision that may occur over time due to wear of the flow meter components, with wear being particularly common in flow meters having moving parts. For this reason, the selection of the material used in the flow meter is of great importance. Traditionally, metal materials are preferred due to their high thermal conductivity and durability. However, in metal and other heavier products, corrosion may occur over time, resulting in deterioration in flow and measurement. In the state of the art, in the assembly of flow meters, depending on the characteristics of the product, techniques such as threaded tightening, snap fitting, ultrasonic welding, etc., are used.Detailed Description of the Invention

[0007] Flow meters are highly important for the efficiency and safety of industrial processes. Flow meters are devices that measure substances with fluidity, such as gas, liquid, or steam, passing through an installation in units of quantity per unit time. Accurate flow measurement plays a critical role in many areas such as process control, energy efficiency, and quality control. The type of flow meter to be selected is determined based on factors such as the characteristics of the fluid to be measured, the measurement accuracy requirements, and the operating conditions. It is characterised by being a flow sensor that, while having a body of high precision for measuring different flow rates and fluid types, provides a measurement value by means of this structure.

[0008] – Sectional view of the flow sensor.

[0009] – Perspective view of the flow sensor.

[0010] – Inlet region of the flow sensor.

[0011] – Outlet region of the flow sensor.

[0012] – Flow sensor impeller blade region – radiused region.Reference List

[0013] Bearing on the inlet side of the flow sensorBearing on the outlet side of the flow sensorImpellerInlet guideOutlet bracketShaftInlet guide bladesOutlet guide bladesBodyImpeller blade tip – radiused regionInlet region gapOutlet region gapEnclosed area

[0014] By leaving only a very small gap (11) between the endmost part of the bearing (1) in the inlet region inside the flow sensor and the impeller (3), the entry of particles carried by the fluid into the bearing (1) region through such a small gap is prevented.

[0015] Since the outer diameter of the bearing (1) on the water inlet side of the impeller (3) is larger than the central diameter of the impeller (3), during fluid flow, the fluid passes directly through the intermediate region as it moves from a larger diameter to a smaller diameter, thereby not entering the gap and not being able to carry particles with it. It is characterised by ensuring that the working bearing of the impeller (3) remains clean.

[0016] The shaft (6) of the impeller (3) is related to being small enough to rotate freely within the diameter of the guide bearing (1) housing on the fluid inlet side, and large enough not to resonate and create noise, thereby enabling silent yet precise measurement.

[0017] By leaving only a very small gap (12) between the mouth of the bearing (2) in the outlet region of the impeller (3) inside the flow sensor and the impeller (3), the entry of particles carried by the fluid into the bearing region is prevented. At the same time, as the rear side of the shaft (6) housing in the outlet region is the enclosed area (13), the water inside forms a static volume, preventing additional water and particles from entering from outside.

[0018] By forming the surfaces on the outer diameter of the blades (7–8) into a radiused (10) shape, sharp edges are eliminated, and the magnetic field concentrated at sharp edges is dispersed and spread over a wider surface at the blade tips, thereby reducing the risk of ferritic particles accumulating in one place and causing blockage.

[0019] Said flow sensor, by means of its minimum cross-sectional passage area, is capable of operating with the same measurement sensitivity and values as all inlet installations with larger-diameter cross-sectional areas in use. As long as the liquid inlet cross-sectional area of the sensor is smaller than that of the inlet installation, it is characterised in that, since this cross-sectional area is the “first factor” restricting the flow rate, the measurement values display the same value at the same flow rate regardless of the inlet cross-section.

Claims

A flow sensor independent of different inlet feeds and resistant to contamination, characterised in that it can operate with the same sensitivity and values as all inlet installations having cross-sectional areas larger than the minimum cross-sectional passage area of the flow sensor.The flow sensor independent of different inlet feeds and resistant to contamination according to Claim 1, characterised in that as long as the liquid inlet cross-sectional area of the sensor is smaller than that of the inlet installation, the measurement values display the same value at the same flow rate regardless of the inlet cross-section since this cross-sectional area is the “first factor” restricting the flow rate.The flow sensor independent of different inlet feeds and resistant to contamination according to Claim 1, characterised in that the entry of particles carried by the fluid into the bearing (1) region through such a small gap is prevented by leaving only a very small gap (11) between the endmost part of the bearing (1) in the inlet region inside the flow sensor and the impeller (3).The flow sensor independent of different inlet feeds and resistant to contamination according to Claim 1, characterised in that, since the outer diameter of the bearing (1) on the water inlet side of the impeller (3) is larger than the central diameter of the impeller (3), during fluid flow, the fluid passes directly through the intermediate region as it moves from a larger diameter to a smaller diameter, thereby not entering the gap, and, as it cannot enter the gap and therefore cannot carry with it particles that cause contamination in the working bearing region, it ensures that the working bearing of the impeller (3) remains clean.The flow sensor independent of different inlet feeds and resistant to contamination according to Claim 1, characterised in that the shaft (6) of the impeller (3) is small enough to rotate freely within the diameter of the guide bearing (1) housing on the fluid inlet side and large enough not to resonate and create noise, thereby enabling silent yet precise measurement.The flow sensor independent of different inlet feeds and resistant to contamination according to Claim 1, characterised in that by leaving only a very small gap (12) between the mouth of the bearing (2) in the outlet region of the impeller (3) inside the flow sensor and the impeller (3), the entry of particles carried by the fluid into the bearing region is prevented.The flow sensor independent of different inlet feeds and resistant to contamination according to Claim 1, characterised in that as the rear side of the shaft (6) housing in the described outlet region is enclosed, the water inside forms a static volume, preventing additional water and particles from entering from outside.The flow sensor independent of different inlet feeds and resistant to contamination according to Claim 1, characterised in that the risk of ferritic particles accumulating in one place and causing blockage is reduced by forming the surfaces on the outer diameter of the blades (7–8) into a radiused (10) shape so that no sharp edges remain, and by dispersing the magnetic field concentrated at sharp edges and spreading it over a wider surface at the blade tips.

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