A turbine flowmeter with a plug

Abstract

The utility model relates to turbine flowmeter technical field discloses an insert turbine flowmeter, including insert turbine flow sensor and baffle plate body, the sensor is used for inserting the pipeline and measures fluid flow, has the turbine casing with fluid contact and rotates with fluid flow, the baffle plate body sets up the upstream of turbine casing, with pipeline cross section intersection, the shell of sensor adopts 304 stainless steel to make, the baffle plate body is flat plate structure, adopts polytetrafluoroethylene to make. In the utility model, the baffle plate body sets up the upstream of turbine casing, and the fluid flow field is regularized, makes fluid steady and evenly impact turbine blade, reduces the interference of flow field disorder to measurement, and turbine blade reduces the rotation resistance, makes turbine rotation more stable, and further improved the accuracy of sensor to flow signal response. Signal processing device carries out effective processing to the electric signal of sensor output, ensures the accuracy of flow data output.

Description

Technical Field

[0001] This utility model relates to the field of turbine flow meter technology, and in particular to an insertion turbine flow meter. Background Technology

[0002] Insertion turbine flow meters are used to measure the flow rate of liquids or gases and are widely used in various industrial fields. Their precise measurement capabilities help monitor fluid flow. In operation, the fluid is guided into the flow meter in a specific manner, and the turbine blades rotate under the impetus of the fluid flow. The rotational speed is proportional to the fluid flow rate, thus achieving accurate flow measurement. The main advantages of this type of flow meter are its high accuracy, stability, and ease of maintenance, making it widely applicable for monitoring the flow rate of liquids and gases.

[0003] Traditional insertion turbine flow meters typically consist of a turbine, a sensor, an insertion tube, and a flow guiding device. The turbine rotates under the influence of the fluid, the sensor converts the turbine's rotational speed into an electrical or pulse signal, the insertion tube secures the flow meter within the pipe, and the flow guiding device ensures that the fluid flows uniformly into the turbine blades, preventing uneven flow from affecting measurement accuracy.

[0004] Traditional insertion turbine flow meters have complex flow guiding structures, primarily due to the need for precise design of the flow guiding device to ensure uniform fluid entry into the turbine. Uneven fluid flow or turbulence can affect the turbine's rotational speed, thus impacting measurement results. Therefore, the complex flow guiding structure requires consideration of the fluid's flow state and flow distribution during the design phase. Different fluid characteristics necessitate different flow guiding designs, increasing the flow meter's manufacturing complexity and making equipment maintenance more difficult. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an insertion turbine flow meter, which aims to improve the problem that the traditional insertion turbine flow meter has a more complex flow guiding structure, which increases the manufacturing complexity of the flow meter and leads to increased equipment maintenance difficulty.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: an insertion turbine flow meter, comprising an insertion turbine flow sensor and a baffle plate;

[0007] The sensor is used to measure fluid flow rate when inserted into a pipe and has a turbine housing that contacts the fluid and rotates with the fluid flow.

[0008] The baffle plate is located upstream of the turbine housing and intersects with the cross-section of the pipe;

[0009] The sensor housing is made of 304 stainless steel.

[0010] Furthermore, the baffle plate has a flat plate structure and is made of polytetrafluoroethylene.

[0011] Furthermore, the turbine housing is provided with a turbine shaft and multiple turbine blades, and the turbine shaft rotates inside the turbine housing via a bearing made of silicon carbide.

[0012] Furthermore, the turbine blades are arc-shaped and have a polished surface, and are made of aluminum alloy.

[0013] Furthermore, it includes a signal processing device electrically connected to the sensor for processing the signal output by the sensor, and a mounting assembly is provided at the bottom of the sensor.

[0014] Furthermore, the mounting assembly includes a flange connected to the pipeline, the flange being disposed at the bottom of the sensor, and a seal using a nitrile rubber sealing ring being provided between the flanges.

[0015] Furthermore, the flange is made of alloy steel.

[0016] Furthermore, a protective box is fixedly connected to the bottom of the sensor, and a signal processing device is installed inside the protective box. The protective box is made of cast aluminum.

[0017] This utility model has the following beneficial effects:

[0018] 1. In this invention, a baffle plate is first positioned upstream of the turbine housing to regulate the fluid flow field, ensuring a stable and uniform impact of the fluid on the turbine blades and reducing interference from flow turbulence on the measurement. Simultaneously, the curved design and polished surface of the turbine blades, along with the silicon carbide bearings, reduce rotational resistance, making turbine rotation more stable and thus improving the accuracy of the sensor's flow signal sensing. The signal processing device effectively processes the electrical signal output by the sensor, ensuring the accuracy of the flow data output.

[0019] 2. In this utility model, the protective box is made of cast aluminum, which effectively resists external environmental corrosion and mechanical damage, protecting critical internal components. The combination of an alloy steel flange and a nitrile rubber sealing ring or a graphite metal spiral wound gasket ensures the sealing of the pipeline connection, prevents fluid leakage, and enables the equipment to operate stably for a long time under complex conditions such as high pressure. These designs effectively extend the service life of the flow meter and reduce maintenance costs. Attached Figure Description

[0020] Figure 1 This is a perspective view of an insertion turbine flow meter proposed in this utility model;

[0021] Figure 2This is a schematic diagram of the baffle plate structure of an insertion turbine flow meter proposed in this utility model;

[0022] Figure 3 This is a schematic diagram of the turbine housing structure of an insertion turbine flow meter proposed in this utility model;

[0023] Figure 4 This is a schematic diagram of the flange structure of an insertion turbine flow meter proposed in this utility model;

[0024] Figure 5 This is a schematic diagram of the protective box structure of an insertion turbine flow meter proposed in this utility model.

[0025] Legend:

[0026] 1. Sensor; 2. Baffle plate; 3. Turbine housing; 31. Turbine shaft; 32. Turbine blades; 33. Bearing; 4. Signal processing device; 5. Flange; 6. Seal; 7. Protective box. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figures 1-5This utility model provides an embodiment of an insertion turbine flow meter, comprising an insertion turbine flow sensor 1 and a baffle plate 2. The sensor 1 is used to measure fluid flow rate by insertion into a pipe and has a turbine housing 3 that contacts the fluid and rotates with the fluid flow. The baffle plate 2 is located upstream of the turbine housing 3 and intersects with the pipe cross-section, mainly used to regulate the fluid flow field and make the fluid flow uniformly towards the turbine housing 3, thereby improving the accuracy of flow measurement. The housing of the sensor 1 is made of 304 stainless steel, which has good corrosion resistance and oxidation resistance, and can ensure long-term stable operation in different fluid environments. This design improves the overall reliability of the flow meter. The baffle plate 2 has a flat structure and is made of polytetrafluoroethylene (PTFE), which has corrosion resistance and low friction properties. This reduces wear between the fluid and the baffle, helping the flow meter maintain stable performance over a long period in harsh environments. The turbine housing 3 houses the turbine shaft 31 and multiple turbine blades 32. The turbine shaft 31 rotates inside the turbine housing 3 via bearings 33 made of silicon carbide. The silicon carbide bearings 33 have excellent wear resistance and high-temperature stability, effectively extending the service life of the turbine flow meter. The turbine blades 32 have an arc-shaped design and a polished surface. The flow meter is made of aluminum alloy, and its arc design helps the fluid to drive the turbine evenly. The polishing process reduces friction, ensuring more flexible turbine operation, thereby improving the flow meter's measurement accuracy and response speed. The signal processing device 4 is electrically connected to the sensor 1 and is used to process the signal output by the sensor 1, converting the turbine rotation signal into flow data and providing a stable output to ensure the accuracy of the measurement results. The sensor 1 has a mounting assembly at its bottom, including a flange 5 that connects to the pipeline. The flange 5 is located at the bottom of the sensor 1, facilitating the connection between the flow meter and the pipeline and ensuring its secure installation. A sealing element 6, using a nitrile rubber sealing ring or a graphite metal spiral wound sealing gasket, is installed between the flanges 5. The sealing element 6 effectively prevents fluid leakage and improves the sealing and safety of the entire system. The flange 5 is made of alloy steel, which has strong compressive strength and corrosion resistance, and can withstand pressure fluctuations in the pipeline and the influence of the external environment. A protective box 7 is fixedly connected to the bottom of the sensor 1. The signal processing device 4 is installed inside the protective box 7. The protective box 7 is made of cast aluminum, which can effectively protect the signal processing device 4 from damage by the external environment, prevent damage to the sensor 1 and the signal processing device 4, and ensure the long-term stable operation of the flow meter.

[0029] Specifically, when the fluid in the pipeline flows through the baffle plate 2 located upstream of the turbine housing 3, the flat baffle plate 2 intersects with the cross-section of the pipeline, regulating the fluid flow field and ensuring that the fluid flows stably and uniformly towards the turbine housing 3. The fluid then impacts the internally arc-shaped and polished turbine blades 32, causing the turbine shaft 31 to rotate within the turbine housing 3 via the silicon carbide bearing 33. The rotation of the turbine is sensed by the insertion turbine flow sensor 1. The sensor 1 converts the turbine rotation into an electrical signal and transmits the electrical signal to the signal processing device 4, which is electrically connected to the sensor 1. After processing the electrical signal, the signal processing device 4 outputs flow data. The sensor 1 is connected to the pipeline through the bottom alloy steel flange 5. Nitrile rubber seals 6 are used between the flanges 5 to prevent fluid leakage. The signal processing device 4 is placed inside the cast aluminum protective box 7 to ensure that the signal processing device 4 can work normally in a stable environment, thereby achieving accurate measurement of the fluid flow rate in the pipeline.

[0030] Working principle: When the fluid in the pipeline flows through the baffle plate 2 located upstream of the turbine housing 3, the flat baffle plate 2 intersects with the cross-section of the pipeline, regulating the fluid flow field and making the fluid flow stably and uniformly towards the turbine housing 3. The fluid impacts the internally arc-shaped and polished turbine blades 32, driving the turbine shaft 31 to rotate within the turbine housing 3 via the silicon carbide bearing 33. The insertion turbine flow sensor 1 senses the turbine rotation and converts it into an electrical signal. The electrical signal is transmitted to the signal processing device 4, which is electrically connected to the sensor 1. After processing, the flow data is output. The sensor 1 is connected to the pipeline through the bottom alloy steel flange 5. The nitrile rubber sealing ring 6 between the flanges 5 prevents fluid leakage. The signal processing device 4 is placed in the cast aluminum protective box 7 to ensure its stable operation, thereby realizing the measurement of the fluid flow rate in the pipeline.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An insertion turbine flow meter, comprising an insertion turbine flow sensor (1) and a baffle plate (2), characterized in that... ； The sensor (1) is used to insert into the pipe to measure the fluid flow rate and has a turbine housing (3) that contacts the fluid and rotates with the fluid flow. The baffle plate (2) is located upstream of the turbine housing (3) and intersects with the cross-section of the pipe; The housing of the sensor (1) is made of 304 stainless steel.

2. The insertion turbine flow meter according to claim 1, characterized in that: The baffle plate (2) has a flat plate structure and is made of polytetrafluoroethylene.

3. The insertion turbine flow meter according to claim 2, characterized in that: The turbine housing (3) is provided with a turbine shaft (31) and a plurality of turbine blades (32). The turbine shaft (31) rotates inside the turbine housing (3) via a bearing (33) made of silicon carbide.

4. The insertion turbine flow meter according to claim 3, characterized in that: The turbine blades (32) are arc-shaped and polished, and are made of aluminum alloy.

5. An insertion turbine flow meter according to claim 4, characterized in that: It includes a signal processing device (4), which is electrically connected to the sensor (1) and is used to process the signal output by the sensor (1). The sensor (1) has an installation component at its bottom.

6. The insertion turbine flow meter according to claim 5, characterized in that: The mounting assembly includes a flange (5) connected to a pipe, the flange (5) being disposed at the bottom of the sensor (1), and a seal (6) using a nitrile rubber sealing ring being provided between the flanges (5).

7. An insertion turbine flow meter according to claim 6, characterized in that: The flange (5) is made of alloy steel.

8. An insertion turbine flow meter according to claim 7, characterized in that: The sensor (1) is fixedly connected to a protective box (7) at its bottom. The protective box (7) is equipped with a signal processing device (4) and is made of cast aluminum.

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