Pressure-difference-based flow-measurement device for gases

Abstract

The “PRESSURE-DIFFERENCE-BASED FLOW-MEASUREMENT DEVICE FOR GASES” relates to a device that generates a pressure difference originating from a mechanical restriction of the flow of gases and which provides easy connection to digital measurement equipment, providing high-precision values. Said device comprises a body (1) made from plastics, provided with a pipe (2) for gases with connections at each of the ends, two pressure take-offs (5) on the front face for connection to a pressure differential sensor, and a flow-restriction plate (6) that divides the tube (2) into two compartments in order to create the pressure difference. Connected to this invention is a device comprising a pressure-difference sensor (7) capable of being connected to the Internet and processing the data received using artificial intelligence and machine learning and of presenting the data to the user on an online platform.

Claims

1. “FLOW MEASUREMENT DEVICE FOR PRESSURE DIFFERENCE FOR GASES”, comprising a single body (1), equipped with a gas pipe (2) connected to an orifice restrictor plate for partial obstruction of the flow in a pipe, which segments the piping (2) in two compartments, providing a pressure difference, in which each compartment is provided with a pressure outlet (5), totaling two sockets, characterized by this restrictor plate having a hole whose diameter may vary from 1 mm to 3 mm in diameter (6), the last compartment being comprised of a connection A (3), in an auxiliary body, and opposite to that connection, a connection B (4), for connection with other devices.

2. “DEVICE FOR MEASURING FLOW BY PRESSURE DIFFERENCE FOR GASES”, according to claim 1, characterized by the connection A (3) being a threaded connection of the type 9/16″×18 UNF Female.

3. “DEVICE FOR MEASURING FLOW BY PRESSURE DIFFERENCE FOR GASES”, according to claim 1, characterized by the connection A (3) being a quick connection for nipple fitting.

4. “FLOW MEASUREMENT DEVICE FOR PRESSURE DIFFERENCE FOR GASES”, according to claim 1, characterized by connection A (3) being a nipple connection.

5. “DEVICE FOR MEASURING FLOW BY PRESSURE DIFFERENCE FOR GASES”, according to claim 1, characterized in that connection B (4) is a threaded connection of the type 9/16″×18 UNF Male.

6. “FLOW MEASUREMENT DEVICE FOR PRESSURE DIFFERENCE FOR GASES”, according to claim 1, characterized by connection B (4) being a nipple connection.

7. “DEVICE FOR MEASURING FLOW BY PRESSURE DIFFERENCE FOR GASES”, according to claim 1, characterized by connection A (3) that can be connected to a pressure gauge, rotameter (8), or other gas release devices.

8. “DEVICE FOR FLOW MEASUREMENT BY PRESSURE DIFFERENCE FOR GASES”, according to claim 1, characterized by connection B (4) that can be connected to the rotameter or other gas release systems.

9. “DEVICE FOR MEASURING FLOW BY PRESSURE DIFFERENCE FOR GASES”, according to claim 1, characterized by two pressure taps (5) of conical tubular shape, for connecting tubings connected to a differential pressure sensor.

10. “DEVICE FOR MEASURING FLOW BY PRESSURE DIFFERENCE FOR GASES”, according to claim 1, characterized by two pressure taps (5) for direct connection of an electronic flow sensor by pressure differential.

Description

GENERAL DESCRIPTION

[0019] The “Device for measuring flow by pressure difference for gases” can be better understood through the figures, as detailed below:

[0020] FIG. 1—presents a perspective view;

[0021] FIG. 2—shows a cross-sectional view;

[0022] FIG. 3—presents a block diagram of the process and equipment connected to it;

[0023] FIG. 4—it has a typical assembled device;

[0024] FIG. 5—features a device mounted in an alternative mode.

[0025] Referring to the figures, it can be seen that the body (1) of the device is comprised of a tube (2) in its center, segmented by a restricting plate (6) in the body (1) of the device. Each side of the tube (2) is terminated by a 9/16″×18 UNF Female thread (3) and another 9/16″×18 UNF Male thread (4) respectively, from left to right as shown in FIG. 2.

[0026] The restrictor plate (6) subdivides the tube (2) in two compartments connected by a small segment, which in turn aims to create a pressure difference by changing the flow regime of the gases that will pass internally to the device. This pressure difference can be measured from the device using the two pressure taps (5) contained on the front face and which are adapted for use with rubber tubings.

[0027] The “Device for measuring flow by pressure difference for gases” must then be connected to pressure differential sensors present in the measuring equipment so that it makes the appropriate acquisition and interpretation of the data collected in the system.

[0028] The 9/16″×18 UNF Female (3) and 9/16″×18 UNF Male (4) wheels illustrated in FIG. 2, combine the function of connecting the device to the gas delivery solutions currently available on the market, which may or may not be used with the presence of an analog flowmeter (8) to provide flow visualization locally.

[0029] Installation takes place by coupling the 9/16″×18 UNF Female thread (3) in the rotameter analog flowmeter (8), followed by the connection of the gas release systems to the 9/16″×18 UNF Male thread (4), and connection of the sensor, through tubings, to the pressure taps (5).

[0030] The operation of the “Device for measuring flow by pressure difference for gases” consists of gases passing through the tube (2) passing through the restrictor plate (5) and changing the flow regime. This regime change causes a difference in the pressure collected by each pressure tap (5) and, after mathematical calculations performed on a measuring equipment, it is possible to obtain the gas mass flow rate with an accuracy of 2.5%.

Modalities

[0031] The preferred modality consists of a device made of plastic with two pressure taps on its front face and two connections for medical gas pipes, more specifically medical oxygen. The first connection corresponds to a 9/16″×18 UNF Female thread, which must be connected to a rotameter. The second connection corresponds to a 9/16″×18 UNF Male thread, which must connect to the appropriate release systems to desired gas therapy. The two pressure taps are used to connect rubber tubings, which in turn connect with the differential pressure sensors present in another device. The plastic structure has a body that includes the aforementioned connections and a flow restrictor plate that internally segments the body into two parts.

[0032] Another modality of the present device consists only in changing the positioning of the device in question, which in this situation will be found between the pressure valve or gas delivery pipe and the rotameter. The other configurations are maintained, consisting of a device made of plastic with two pressure taps on its front face and two connections for medical gas pipes, more specifically medical oxygen. The first connection corresponds to a 9/16″×18 UNF Female, thread, which must connect to the pressure valve outlet directly connected to the oxygen cylinder or the gas delivery pipe. The second connection corresponds to a 9/16″×18 UNF Male thread that should be connected to the rotameter butterfly kit, which, in turn, connects normally through its regular outlet to the appropriate delivery systems for the desired gas therapy. The two pressure taps are used to connect rubber tubings, which in turn connect with the pressure differential sensors present in another device. The plastic structure has a body that includes the aforementioned connections and a flow restrictor plate that segments the body into two parts.