Branch line flow monitoring device

Abstract

The utility model relates to flow monitoring device technical field, especially branch pipeline flow monitoring device, including valve body, the valve body is hollow cylindrical shell structure in the inside, the inside intermediate position of valve body is provided with ring groove, fixed mounting has the bearing with valve body coaxial in the ring groove, the inner diameter of bearing is identical with the inner diameter of valve body, the bearing includes inner race, retainer, outer ring, the inner wall of inner race is evenly provided with a plurality of blades in the circumference, the outside of inner race is evenly provided with a plurality of light reflection area in the axis direction, through the setting of a plurality of blades of setting in the inner race of bearing, make the inner race of bearing and a plurality of blades composed a turbine structure, make just have liquid flow, the inner race of bearing will rotate, through the identification of light reflection area on the outer surface of inner race of bearing, to identify the rotating speed of inner race of bearing, get the flow condition through the detection of rotating speed.

Description

Technical Field

[0001] This utility model relates to the technical field of flow monitoring devices, and in particular to a branch pipeline flow monitoring device. Background Technology

[0002] Flow meters are industrial instruments used to measure the flow rate of fluids (liquids, gases, or steam), and are often referred to as the "eyes" of industrial production. They play a crucial role in process control, energy metering, trade settlement, and environmental protection. Based on different measurement principles, flow meters can be divided into the following main categories: 1. Positive displacement flow meters: Representative types include rotary impeller flow meters and oval gear flow meters. Their working principle is to mechanically measure the number of times the fluid fills and empties a standard metering chamber. Their function is to achieve high-precision total volume measurement, especially suitable for trade transfers and batch control of viscous liquids (such as oil and chemicals), but they require high media cleanliness. 2. Velocity flow meters: Representative types include turbine flow meters, electromagnetic flow meters, and ultrasonic flow meters. Their principle is to measure the fluid velocity and then multiply it by the pipe cross-sectional area to calculate the flow rate. This is the most widely used type. Among them, electromagnetic flowmeters are suitable for conductive liquids (such as water, acid and alkali solutions) with almost no pressure loss; ultrasonic flowmeters are used for large-diameter pipe flow measurement and can be installed online, which is very convenient; turbine flowmeters have high accuracy and fast response and are often used for precision measurement of clean liquids. 3. Mass flowmeters: The representative type is the Coriolis mass flowmeter. It directly measures the mass flow rate of the fluid, rather than its volume. Its function is to solve the measurement error problem caused by density changes due to changes in fluid temperature and pressure, achieving true high-precision mass measurement, and is widely used in fields such as chemical reactions, petrochemicals, and pharmaceutical production that require strict quality control. 4. Differential pressure flowmeters: The representative types are orifice plate and V-cone flowmeters. Its principle is to calculate the flow rate by measuring the pressure difference generated when the fluid flows through the throttling device. Its function is that it has a long history, simple structure, and low cost, and is suitable for measuring steam, gas, and liquid at high temperature and high pressure, but its accuracy is relatively low and there is a certain pressure loss. 5. Other types: such as vortex flowmeters (suitable for steam and gas), float flowmeters (suitable for small flow measurement), etc. In summary, the function of flowmeters is monitoring, control, and settlement. No single flow meter is suitable for all operating conditions. The key to selection lies in comprehensively considering the characteristics of the medium (liquid / gas / steam, temperature, pressure, viscosity, cleanliness), installation conditions, and measurement requirements (accuracy requirements, whether to display instantaneous or cumulative values). It is precisely these diverse types of flow meters that collectively ensure the stable, efficient, and economical operation of modern industrial processes.

[0003] The turbine flow meter in the prior art tends to occupy a large amount of pipe cross-sectional area, which seriously interferes with the upper limit of fluid flow inside the pipe. Therefore, it is particularly important to improve the installation structure of the turbine. Utility Model Content

[0004] The purpose of this invention is to provide a branch pipeline flow monitoring device to solve the problems existing in the prior art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A branch pipeline flow monitoring device includes a valve body, which is a hollow cylindrical shell structure. An annular groove is provided in the middle of the valve body. A bearing coaxial with the valve body is fixedly installed in the annular groove. The inner diameter of the bearing is the same as the inner diameter of the valve body. The bearing includes an inner ring, a cage, and an outer ring. Multiple blades are evenly arranged circumferentially on the inner wall of the inner ring, and multiple reflective areas are evenly arranged axially on the outer side of the inner ring.

[0007] By adopting the above technical solution, when liquid moves left and right inside the valve body, it passes through the blades. Multiple blades and the inner ring of the bearing form a turbine structure, so that as long as liquid flows through, the inner ring of the bearing will rotate. By identifying the reflective area on the outer surface of the inner ring of the bearing, the rotational speed of the inner ring of the bearing can be identified. The flow rate is obtained by detecting the rotational speed. Because the inner diameter of the bearing inner ring is the same as the inner diameter of the valve body, it will not occupy too much space inside the valve body. This makes the structure of this solution more suitable for metering in pipes with small inner diameters compared to traditional turbine flow meters.

[0008] In a further embodiment, the inner diameter of the outer ring transitions with the outer diameter of the inner ring. Both the inner wall of the outer ring and the outer wall of the inner ring are provided with mounting grooves for accommodating a retainer. The two end faces of the retainer cooperate with the mounting grooves to restrict misalignment between the inner and outer rings. The axial directions of both the outer and inner rings are left-right. The right end of the inner ring has an extension section located to the right of the outer ring. A circular protrusion is provided on the outer side of the right end of the inner ring. The outer diameter of the circular protrusion is the same as the outer diameter of the outer ring. The left side of the circular protrusion fits against the right side of the outer ring. The reflective area is located on the outer wall of the circular protrusion.

[0009] By adopting the above technical solution, more precisely, the outer ring is composed of two rings, a first ring and a second ring, joined together.

[0010] In a further embodiment, the top of the valve body is provided with a detection hole corresponding to the annular protrusion, and a detector is installed in the detection hole.

[0011] By adopting the above technical solution, the detector is used to record the number of reflective areas passing through the detection hole and the interval time. The detector can be an infrared counter. After the probe part of the infrared counter is installed, the detection hole needs to be sealed.

[0012] In a further embodiment, the valve body axis is in the left-right direction, the left end face of the bearing is in contact with the left side of the annular groove, and the right end face of the bearing is in contact with the right side of the annular groove.

[0013] By adopting the above technical solution, excessive liquid entering the bearing cage position can be avoided, thus preventing it from affecting the rotation of the inner ring.

[0014] In a further embodiment, the inner ring of the bearing is made of high molecular weight polyethylene.

[0015] By adopting the above technical solution, the mass of the inner ring is reduced, making the inner ring more sensitive when rotating.

[0016] In a further embodiment, graphite pads are provided at both ends of the cage.

[0017] The above technical solution is used to reduce the rotational friction coefficient of the inner ring.

[0018] In summary, this utility model has the following beneficial effects:

[0019] 1. By setting multiple blades in the inner ring of the bearing, the inner ring and multiple blades form a turbine structure. Whenever liquid flows through, the inner ring of the bearing will rotate. The rotational speed of the inner ring is identified by the reflective area on the outer surface of the inner ring. The flow rate is obtained by detecting the rotational speed. Because the inner diameter of the bearing inner ring is the same as the inner diameter of the valve body, it does not occupy too much space inside the valve body. This makes the structure of this solution more suitable for metering in pipes with small inner diameters compared to traditional turbine flow meters. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram illustrating the installation structure of the bearing and valve body in this utility model.

[0022] Figure 3 This is a structural schematic diagram of the bearing used to illustrate this utility model.

[0023] In the diagram, 1 is the valve body; 2 is the bearing; 21 is the inner ring; 22 is the cage; 23 is the outer ring; and 3 is the blade. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to the attached figures. Figure 1 In this specification, the terms "bottom surface" and "top surface," "inner" and "outer" refer to the direction toward or away from the geometry of a specific component. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this specification, "a plurality of" means two or more, unless otherwise explicitly and specifically defined by the direction of the center.

[0026] Example 1:

[0027] like Figures 1-3 As shown, a branch pipeline flow monitoring device includes a valve body 1, which is a hollow cylindrical shell structure. An annular groove is provided in the middle of the valve body 1, and a bearing 2 coaxial with the valve body 1 is fixedly installed in the annular groove. The inner diameter of the bearing 2 is the same as the inner diameter of the valve body 1. The bearing 2 includes an inner ring 21, a cage 22, and an outer ring 23. Multiple blades 3 are evenly arranged circumferentially on the inner wall of the inner ring 21, and multiple reflective areas are evenly arranged axially on the outer side of the inner ring 21. The inner diameter of the outer ring 23 transitions to the outer diameter of the inner ring 21. Mounting grooves for accommodating the cage 22 are provided on both the inner wall of the outer ring 23 and the outer wall of the inner ring 21. The two end faces of the cage 22 cooperate with the mounting grooves to restrict the movement of the inner ring 21 and the outer ring 23. The misalignment of ring 3 is such that the axes of the outer ring 23 and the inner ring 21 are both in the left-right direction. The right end of the inner ring 21 is provided with an extension section located to the right of the outer ring 23. A circular protrusion is provided on the outer side of the right end of the inner ring 21. The outer diameter of the circular protrusion is the same as the outer diameter of the outer ring 23. The left side of the circular protrusion is attached to the right side of the outer ring 23. The reflective area is located on the outer wall of the circular protrusion. The top of the valve body 1 is provided with a detection hole corresponding to the circular protrusion. A detector is installed in the detection hole. The axis of the valve body 1 is in the left-right direction. The left end face of the bearing 2 is attached to the left side of the ring groove, and the right end face of the bearing 2 is attached to the right side of the ring groove. The inner ring 21 of the bearing 2 is made of high molecular weight polyethylene. Graphite gaskets are provided at both ends of the cage 22.

[0028] Specific implementation process: When liquid moves left and right inside the valve body, it passes through the blades. Multiple blades and the inner ring of the bearing form a turbine structure, so that as long as liquid flows through, the inner ring of the bearing will rotate. By identifying the reflective area on the outer surface of the inner ring of the bearing, the rotational speed of the inner ring of the bearing can be identified. The flow rate is obtained by detecting the rotational speed. Because the inner diameter of the bearing inner ring is the same as the inner diameter of the valve body, it will not occupy too much space inside the valve body. This makes the structure of this solution more suitable for metering in pipes with small inner diameters compared to traditional turbine flow meters.

[0029] In the embodiments disclosed in this utility model, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments disclosed in this utility model according to the specific circumstances.

[0030] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A branch pipeline flow monitoring device, characterized in that: The device includes a valve body (1), which is a hollow cylindrical shell structure. An annular groove is provided in the middle of the valve body (1). A bearing (2) coaxial with the valve body (1) is fixedly installed in the annular groove. The inner diameter of the bearing (2) is the same as the inner diameter of the valve body (1). The bearing (2) includes an inner ring (21), a cage (22), and an outer ring (23). Multiple blades (3) are evenly arranged on the inner wall of the inner ring (21) in the circumferential direction. Multiple reflective areas are evenly arranged on the outer side of the inner ring (21) in the axial direction.

2. The branch pipeline flow monitoring device according to claim 1, characterized in that: The inner diameter of the outer ring (23) is transitionally fitted with the outer diameter of the inner ring (21). The inner wall of the outer ring (23) and the outer wall of the inner ring (21) are both provided with mounting grooves for accommodating the retainer (22). The two end faces of the retainer (22) are used to cooperate with the mounting grooves to restrict the misalignment of the inner ring (21) and the outer ring (23). The axial directions of the outer ring (23) and the inner ring (21) are both left and right. The right end of the inner ring (21) is provided with an extension section located on the right side of the outer ring (23). The outer side of the right end of the inner ring (21) is provided with an annular protrusion. The outer diameter of the annular protrusion is the same as the outer diameter of the outer ring (23). The left side of the annular protrusion fits against the right side of the outer ring (23). The reflective area is located on the outer wall of the annular protrusion.

3. The branch pipeline flow monitoring device according to claim 2, characterized in that: The valve body (1) is provided with a detection hole with a corresponding annular protrusion on its top, and a detector is installed in the detection hole.

4. The branch pipeline flow monitoring device according to claim 1, characterized in that: The valve body (1) has an axis that runs left and right. The left end face of the bearing (2) is in contact with the left side of the annular groove, and the right end face of the bearing (2) is in contact with the right side of the annular groove.

5. The branch pipeline flow monitoring device according to claim 1, characterized in that: The inner ring (21) of the bearing (2) is made of high molecular weight polyethylene.

6. The branch pipeline flow monitoring device according to claim 1, characterized in that: Graphite pads are provided at both ends of the retainer (22).

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