Turbine flowmeter

Abstract

The utility model belongs to the technical field of fluid detection equipment, and relates to a turbine flowmeter which comprises a shell, an impeller seat and an impeller, the impeller seat is arranged in the shell, the impeller is rotatably connected to the impeller seat, a sleeve is connected to the position, corresponding to the impeller, of the upper end of the shell in a sealed mode, a silicon rubber sleeve is arranged in the sleeve, and the silicon rubber sleeve is sleeved with the shell. A sealing cavity filled with silicone oil is formed in the silicon rubber sleeve, a sensor for detecting fluid data is arranged in the sealing cavity, and a through hole communicated with the bottom area of the silicon rubber sleeve is formed in the top of the impeller seat. According to the turbine flowmeter provided by the utility model, the structure is simplified, the cost is reduced, and the functions of the flowmeter are increased.

Description

Technical Field

[0001] This utility model belongs to the technical field of fluid detection equipment, and relates to a turbine flow meter. Background Technology

[0002] Turbine flow meters have advantages such as high temperature and high pressure resistance, small size, light weight, and convenient operation and maintenance. They can quickly and stably measure flow variables even under harsh conditions, and have a wide range of applications. They are widely used in metering and control systems in petroleum, chemical, metallurgical, scientific research and other fields.

[0003] Existing turbine flow meters generally only detect flow rate. If other fluid data, such as temperature and pressure, needs to be detected, additional sensing structures in contact with the fluid must be installed on the flow meter. For example, Chinese utility model CN117537878A (publication date: 2024-02-09) discloses a turbine flow meter for viscous liquids, which includes a housing and the following components mounted on the housing: a turbine transmitter that converts the impeller rotation caused by the flowing viscous liquid into an impeller speed signal and outputs it; a pressure sensor that converts the fluid pressure of the flowing viscous liquid into a pressure signal and outputs it; and a temperature sensor that converts the fluid temperature of the flowing viscous liquid into a temperature signal and outputs it.

[0004] Although the flow meters mentioned above can detect other data about the fluid, each sensing system requires an independent assembly structure, which not only makes the flow meters bulky, increases costs and assembly difficulty, but also affects the layout of various electrical components. Utility Model Content

[0005] This invention addresses the shortcomings of existing technologies by providing a turbine flow meter that simplifies the structure, reduces costs, and increases the functionality of the flow meter.

[0006] To solve the above-mentioned technical problems, the objective of this utility model is achieved through the following technical solution:

[0007] A turbine flow meter includes a housing, an impeller seat, and an impeller. The impeller seat is disposed inside the housing, and the impeller is rotatably connected to the impeller seat. A sleeve is sealed and connected to the upper end of the housing at a location corresponding to the impeller. A silicone sleeve is disposed inside the sleeve, forming a sealed cavity filled with silicone oil. A sensor for detecting fluid data is disposed inside the sealed cavity. A through hole communicating with the bottom area of ​​the silicone sleeve is provided on the top of the impeller seat.

[0008] In the aforementioned turbine flow meter, the sensor includes at least a Hall sensor for detecting fluid flow rate, and the impeller is provided with a magnet that cooperates with the Hall sensor to detect its rotational speed; preferably, there are at least two magnets and they are evenly distributed on the outer periphery of the impeller; more preferably, there are two magnets; preferably, the magnets are embedded on the outer peripheral surface of the impeller.

[0009] In one of the turbine flow meters described above, the sensor includes a temperature sensor for detecting fluid temperature and / or a pressure sensor for detecting fluid pressure; preferably, the sensor includes an integrated temperature and pressure sensor.

[0010] In the aforementioned turbine flow meter, a circuit board for mounting a sensor is provided inside the sealed cavity. A base is provided at the upper end of the circuit board, and the base is sealed to a silicone sleeve, forming a sealed cavity with the silicone sleeve.

[0011] In the aforementioned turbine flow meter, a limiting step is provided on the inner wall of the sleeve, and a flange is provided at the upper end of the silicone sleeve to abut against and seal the limiting step. The base of the circuit board abuts against and is sealed to the flange. A pressure sleeve is provided above the base, and the pressure sleeve is snapped and fixed to the sleeve to press the base of the circuit board. The central hole of the pressure sleeve forms the lead-out structure of the circuit board wires.

[0012] In the aforementioned turbine flow meter, a mounting base is provided on the housing, and the sleeve is disposed within the mounting base and sealed to it by a sealing element. The mounting base, sleeve, silicone sleeve, and through hole are coaxially arranged. Furthermore, multiple annular mounting grooves are provided on the outer wall of the sleeve, and the sealing element is an O-ring respectively fitted into the annular mounting grooves. Furthermore, an axial limiting step is provided on the outer wall of the sleeve to cooperate with and limit the upper end of the mounting base.

[0013] In the aforementioned turbine flow meter, the bottom of the silicone sleeve adopts a thin-walled structure; the thin-walled structure means that the thickness of the silicone wall is easily deformed. Generally speaking, the bottom wall thickness of the silicone sleeve is smaller than the side wall thickness of the silicone sleeve.

[0014] In one of the turbine flow meters described above, the bottom of the silicone sleeve is provided with an upwardly bent annular protrusion, and the cross-section of the annular protrusion is V-shaped.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] 1. This utility model provides a turbine flow meter that incorporates a sealing silicone sleeve, uniformly housing the sensors within a sealed cavity filled with silicone oil. This utility model eliminates the need for individual mounting structures for each sensor, thus simplifying the structure and reducing costs. Furthermore, the unified sensor placement facilitates the layout of various electrical components.

[0017] 2. This invention features a through-hole on the impeller seat that communicates with the bottom area of ​​the silicone sleeve. Through this through-hole, the fluid can influence the bottom of the silicone sleeve, and the fluid characteristics are further transmitted through the silicone oil and sensed by a sensor, thus obtaining fluid data. Therefore, in addition to detecting fluid flow rate data, this invention can also accurately measure data transmitted through the silicone oil, such as temperature and pressure data, thereby expanding the application range of the flow meter. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention;

[0019] Figure 2 This is an axial sectional view of the present invention;

[0020] Figure 3 yes Figure 2 Enlarged view of point A;

[0021] Figure 4 This is an exploded view of the sensor mounting structure of this utility model;

[0022] Reference numerals: 1. Housing; 2. Impeller seat; 3. Impeller; 4. Sleeve; 5. Silicone sleeve; 6. Sealing cavity; 7. Sensor; 8. Through hole; 9. Magnet; 10. Circuit board; 11. Base; 12. Flanged edge; 13. Pressure sleeve; 14. Mounting base; 15. Annular protrusion. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-4 :

[0024] A turbine flow meter includes a housing 1, an impeller seat 2, and an impeller 3. The impeller seat 2 is disposed inside the housing 1, and the impeller 3 is rotatably connected to the impeller seat 2. A sleeve 4 is sealed and connected to the upper end of the housing 1 at a position corresponding to the impeller 3. A silicone sleeve 5 is disposed inside the sleeve 4, and a sealed cavity 6 filled with silicone oil is formed inside the silicone sleeve 5. A sensor 7 for detecting fluid data is disposed inside the sealed cavity 6. A through hole 8 communicating with the bottom area of ​​the silicone sleeve 5 is provided on the top of the impeller seat 2.

[0025] In this embodiment, the sensor 7 includes a Hall sensor 7 for detecting fluid flow rate, and the impeller 3 is provided with a magnet 9 that cooperates with the Hall sensor to detect its rotational speed. When the impeller 3 rotates, the magnet 9 rotates accordingly. The rotational speed of the impeller 3 is detected by the time interval of the signal detected by the Hall sensor, and thus the flow rate of the fluid is detected. To make the detection data more accurate, there are at least two magnets 9 evenly distributed on the outer periphery of the impeller 3; in this embodiment, there are two magnets 9. To make it easier for the Hall sensor to detect displacement signals, the magnets 9 are embedded in the outer peripheral surface of the impeller 3.

[0026] To further extend the flow meter's detection range, the sensor 7 includes a temperature sensor for detecting fluid temperature and / or a pressure sensor for detecting fluid pressure. When using the temperature sensor, the fluid temperature is transmitted to the silicone oil through the silicone sleeve 5, making the silicone oil temperature match the fluid temperature. By detecting the silicone oil temperature, the fluid temperature data can be obtained. When using the pressure sensor, the fluid pressure acts on the silicone sleeve 5, causing the bottom of the silicone sleeve 5 to deform upwards, compressing the volume of the sealed cavity 6, and increasing the silicone oil pressure until the silicone oil pressure matches the fluid pressure. By detecting the silicone oil pressure, the fluid pressure data can be obtained.

[0027] In this embodiment, the sensor 7 is an integrated temperature and pressure sensor, capable of simultaneously detecting temperature and pressure. In this embodiment, the Hall sensor and the integrated temperature and pressure sensor are respectively located on the left and right sides of the circuit board.

[0028] The specific installation and sealing structure of this embodiment is as follows: a circuit board 10 for mounting a sensor 7 is provided inside the sealing cavity 6, a base 11 is provided at the upper end of the circuit board 10, the base 11 is sealed to the silicone sleeve 5, and the base 11 and the silicone sleeve 5 form a sealing cavity 6.

[0029] Furthermore, a limiting step is provided on the inner wall of the sleeve 4, and a flange 12 is provided at the upper end of the silicone sleeve 5 to abut against and seal the limiting step. The base 11 of the circuit board 10 abuts against and seals the flange 12. A pressure sleeve 13 is provided above the base 11. The pressure sleeve 13 is snapped and fixed to the sleeve 4 and presses the base 11 of the circuit board 10. The central hole of the pressure sleeve 13 forms the lead-out structure of the circuit board 10 wires.

[0030] Furthermore, the housing 1 is provided with a mounting base 14, and the sleeve 4 is disposed in the mounting base 14 and sealed to it by a sealing element. The mounting base 14, sleeve 4, silicone sleeve 5 and through hole 8 are coaxially arranged. Furthermore, the outer wall of the sleeve 4 is provided with multiple annular mounting grooves, and the sealing element is an O-ring respectively fitted in the annular mounting grooves. Furthermore, the outer wall of the sleeve 4 is provided with an axial limiting step that cooperates with and limits the upper end of the mounting base 14.

[0031] The bottom of the aforementioned silicone sleeve 5 adopts a thin-walled structure; the thin-walled structure means that the thickness of the silicone wall is easily deformed. Generally speaking, the bottom wall thickness of the silicone sleeve 5 is smaller than the side wall thickness of the silicone sleeve 5; the bottom of the silicone sleeve 5 with a thin-walled structure can more easily transmit temperature and pressure.

[0032] Preferably, the bottom of the silicone sleeve 5 is provided with an upwardly bent annular protrusion 15, the cross-section of the annular protrusion 15 is V-shaped, and the annular protrusion 15 can make the bottom of the silicone sleeve 5 more easily deformed.

[0033] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A turbine flow meter, comprising a housing (1), an impeller seat (2), and an impeller (3), wherein the impeller seat (2) is disposed within the housing (1), and the impeller (3) is rotatably connected to the impeller seat (2), characterized in that, A sleeve (4) is sealed to the upper end of the housing (1) at the position corresponding to the impeller (3). A silicone sleeve (5) is provided inside the sleeve (4). A sealed cavity (6) filled with silicone oil is formed inside the silicone sleeve (5). A sensor (7) for detecting fluid data is provided inside the sealed cavity (6). A through hole (8) communicating with the bottom area of ​​the silicone sleeve (5) is provided on the top of the impeller seat (2).

2. A turbine flow meter according to claim 1, characterized in that, The sensor (7) includes at least a Hall sensor for detecting fluid flow rate. The impeller (3) is provided with a magnet (9) that cooperates with the Hall sensor to detect its rotational speed. There are at least two magnets (9) and they are evenly distributed on the outer periphery of the impeller (3).

3. A turbine flow meter according to claim 2, characterized in that, The sensor (7) includes a temperature sensor for detecting fluid temperature and / or a pressure sensor for detecting fluid pressure.

4. A turbine flow meter according to claim 1, characterized in that, The sealed cavity (6) is provided with a circuit board (10) for mounting a sensor (7). A base (11) is provided at the upper end of the circuit board (10). The base (11) is sealed to a silicone sleeve (5). The base (11) and the silicone sleeve (5) form a sealed cavity (6).

5. A turbine flow meter according to claim 4, characterized in that, The inner wall of the sleeve (4) is provided with a limiting step. The upper end of the silicone sleeve (5) is provided with a flange (12) that abuts against and seals the limiting step. The base (11) of the circuit board (10) abuts against and seals the flange (12). A pressure sleeve (13) is provided above the base (11). The pressure sleeve (13) is engaged with the sleeve (4) to fix and press the base (11) of the circuit board (10).

6. A turbine flow meter according to claim 1, characterized in that, The housing (1) is provided with a mounting base (14), and the sleeve (4) is disposed in the mounting base (14) and sealed to it by a sealing element. The mounting base (14), sleeve (4), silicone sleeve (5) and through hole (8) are coaxially arranged.

7. A turbine flow meter according to claim 1, characterized in that, The bottom of the silicone sleeve (5) has a thin-walled structure.

8. A turbine flow meter according to claim 1, characterized in that, The bottom of the silicone sleeve (5) is provided with an upwardly bent annular protrusion (15), and the cross section of the annular protrusion (15) is V-shaped.

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