A V-cone flow meter

Abstract

This utility model belongs to the field of flow measurement technology and discloses a V-cone flow meter. The V-cone flow meter includes a base, connectors, a V-cone throttling element, a differential pressure sensor, a first pressure sensor, a second pressure sensor, and a temperature sensor. The base has a flow channel with connectors at both ends, and the projection of the connectors onto the cross-section of the base is within the cross-section of the base. The V-cone throttling element is disposed within the flow channel. The differential pressure sensor, the first pressure sensor, and the temperature sensor are all disposed on the base. The differential pressure sensor measures the pressure difference of the fluid medium before and after flowing through the V-cone throttling element. The first pressure sensor measures the pressure of the fluid medium before flowing through the V-cone throttling element. The second pressure sensor measures the pressure of the fluid medium after flowing through the V-cone throttling element. The temperature sensor measures the temperature of the fluid medium. This V-cone flow meter has high integration, small size, light weight, and is easy to install.

Description

Technical Field

[0001] This utility model relates to the field of flow measurement technology, and in particular to a V-cone flow meter. Background Technology

[0002] The V-cone flow meter is a flow measurement instrument mainly used for measuring the flow of fluid media (liquid, gas, steam). It utilizes the throttling effect generated by the V-shaped cone in the flow field to measure the flow rate by detecting the pressure difference between the upstream and downstream of the V-cone throttling element. Compared with ordinary throttling elements, it changes the throttling layout, replacing the central orifice throttling with annular throttling. This allows the high-speed fluid in the center of the pipe to mix with the low-speed fluid near the pipe wall under the action of the cone, resulting in a more uniform flow velocity distribution and ensuring accurate measurement of differential pressure even at low flow velocities.

[0003] However, existing V-cone flow meters typically require flange-assisted installation when mounted on the pipeline. This not only makes installation cumbersome but also results in the flange's outward expansion occupying significant space outside the pipeline, leading to a large overall size of the V-cone flow meter and making installation difficult in confined spaces. Furthermore, existing V-cone flow meters usually only have a pressure measuring pipe, requiring the additional installation of a differential pressure sensor. Considering the varying densities of the fluid medium at different pressures and temperatures, resulting in different standard flow rates, pressure and temperature compensation within the measuring pipe are necessary. This necessitates the additional installation of pressure and temperature sensors on the V-cone flow meter, further contributing to its large size, weight, and inconvenient installation. Utility Model Content

[0004] The purpose of this utility model is to provide a V-cone flow meter that has high integration, small size, light weight, and is easy to install.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A V-cone flow meter, characterized in that it comprises:

[0007] The substrate has flow channels formed thereon;

[0008] The connector is provided in two parts, with each connector located at one end of the flow channel. The projection of each connector onto the cross-section of the substrate is located within the cross-section of the substrate.

[0009] The V-cone throttling element is disposed in the flow channel. Along the direction of fluid medium flowing through the V-cone throttling element, the substrate has a first high-pressure tap and a second high-pressure tap at the upstream position of the V-cone throttling element, and the substrate has a low-pressure tap at the downstream position of the V-cone throttling element.

[0010] A differential pressure sensor is disposed on the substrate. The differential pressure sensor has a high-pressure connection hole and a low-pressure connection hole. The high-pressure connection hole can communicate with the first high-pressure tapping hole, and the low-pressure connection hole can communicate with the low-pressure tapping hole.

[0011] A first pressure sensor is disposed on the substrate and is used to measure the pressure at the second high-pressure tap hole.

[0012] A second pressure sensor is disposed on the differential pressure sensor. The differential pressure sensor also has a low-pressure measurement hole, which is connected to the low-pressure connection hole. The second pressure sensor is used to measure the pressure at the low-pressure measurement hole.

[0013] A temperature sensor is disposed on the substrate and is used to measure the temperature of the fluid medium.

[0014] Optionally, the V-cone flowmeter further includes a locking member, and the inlet end of the base is provided with a first mounting groove. The locking member is used to fix the V-cone throttling element in the first mounting groove.

[0015] Optionally, the locking element is a locking ring, which is threadedly connected to the inner wall of the first mounting groove.

[0016] Optionally, a waist groove is formed on the end face of the locking ring on the side away from the first mounting groove.

[0017] Optionally, the V-cone flow meter further includes a connector disposed between the joint and the base, the connector being mounted on the base, and the joint being mounted on the connector.

[0018] Optionally, a first sealing groove is formed on the end face of the connector near the base.

[0019] Optionally, the V-cone flowmeter further includes a gas path adapter plate, which is disposed between the substrate and the differential pressure sensor. The gas path adapter plate has a high-pressure test hole and a low-pressure test hole. The high-pressure test hole can communicate with the first high-pressure tapping hole and the high-pressure connection hole, and the low-pressure test hole can communicate with the low-pressure tapping hole and the low-pressure connection hole.

[0020] Optionally, the V-cone flowmeter further includes a plug for sealing the high-pressure test port and the low-pressure test port.

[0021] Optionally, the cross-section of the substrate is square, and the differential pressure sensor, the first pressure sensor, and the temperature sensor are respectively disposed on different sides of the substrate.

[0022] Optionally, a second mounting groove is provided on the side wall of the substrate, the second high-pressure tapping hole is provided at the bottom of the second mounting groove, and the first pressure sensor is partially disposed in the second mounting groove.

[0023] The beneficial effects of this utility model are:

[0024] The V-cone flowmeter provided by this utility model connects to upstream and downstream pipelines by setting connectors at both ends of the base. The projection of the connectors onto the cross-section of the base is located within the cross-section of the base. This results in smaller size and weight for the connectors, and they do not occupy space outside the base, thus reducing the overall size and weight of the V-cone flowmeter. Furthermore, by integrating the differential pressure sensor, the first pressure sensor, and the temperature sensor onto the base, pressure and temperature compensation during measurement is facilitated, further reducing the overall size and weight of the V-cone flowmeter. This allows the V-cone flowmeter to be used in confined spaces. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the V-cone flowmeter provided in this embodiment of the utility model;

[0026] Figure 2 This is a side view of the V-cone flowmeter provided in this embodiment of the utility model;

[0027] Figure 3 yes Figure 2 Sectional view at point AA;

[0028] Figure 4 This is a schematic diagram of the connector provided in an embodiment of the present invention;

[0029] Figure 5 This is a structural schematic diagram of the connector provided in an embodiment of the present invention from a first-view perspective;

[0030] Figure 6 This is a structural schematic diagram of the connector provided in an embodiment of the present invention from a second perspective;

[0031] Figure 7 This is a schematic diagram of the substrate from a first-view perspective provided in an embodiment of the present invention;

[0032] Figure 8 This is a schematic diagram of the structure of the V-cone throttling element provided in this embodiment of the utility model;

[0033] Figure 9This is a schematic diagram of the structure of the locking ring provided in an embodiment of the present utility model;

[0034] Figure 10 This is a schematic diagram of the substrate from a second perspective provided in an embodiment of the present invention;

[0035] Figure 11 This is a schematic diagram of the differential pressure sensor provided in this embodiment of the utility model;

[0036] Figure 12 This is a schematic diagram of the air passage adapter plate provided in this embodiment of the present invention from a first-view perspective;

[0037] Figure 13 This is a structural schematic diagram of the air passage adapter plate provided in this embodiment of the utility model from a second perspective;

[0038] Figure 14 This is a front view of the V-cone flowmeter provided in this embodiment of the utility model;

[0039] Figure 15 yes Figure 14 Sectional view at point BB;

[0040] Figure 16 This is a structural schematic diagram of the substrate from a third-view perspective provided in an embodiment of this utility model;

[0041] Figure 17 This is a structural schematic diagram of the substrate from a fourth perspective provided in an embodiment of this utility model.

[0042] In the picture:

[0043] 1. Substrate; 101. Flow channel; 102. First mounting groove; 1021. First limiting hole; 103. First high-pressure tap hole; 104. Low-pressure tap hole; 105. First connecting hole; 106. First positioning hole; 107. Second mounting groove; 108. Second high-pressure tap hole; 109. Fixing hole;

[0044] 2. Connector; 201. First through hole; 202. First connecting section; 203. Second connecting section; 204. Limiting section;

[0045] 3. Connecting component; 301. Second through hole; 302. First sealing groove;

[0046] 4. V-cone throttling element; 401. Mounting part; 4011. Flow passage hole; 4012. Second limiting hole; 402. Connecting part; 403. Throttling part;

[0047] 5. Locking ring; 501. Waist groove;

[0048] 6. Differential pressure sensor; 601. High-pressure connection hole; 602. Low-pressure connection hole; 603. Second connection hole; 604. Second positioning hole; 605. Low-pressure measurement hole;

[0049] 7. First pressure sensor;

[0050] 8. Temperature sensor; 801. Fixture;

[0051] 9. Gas circuit adapter plate; 901. High pressure test hole; 902. Low pressure test hole; 903. First high pressure adapter hole; 904. First low pressure adapter hole; 905. Second high pressure adapter hole; 906. Second low pressure adapter hole; 907. Third connecting hole; 908. Third positioning hole; 909. Fourth connecting hole; 910. Fourth positioning hole; 911. Second sealing groove; 912. Plug threaded hole;

[0052] 10. Plug; 11. First positioning component; 12. Second positioning component; 13. Second pressure sensor. Detailed Implementation

[0053] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0054] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0057] like Figures 1 to 17 As shown, this embodiment provides a V-cone flow meter, which includes a base 1, connectors 2, a V-cone throttling element 4, a differential pressure sensor 6, a first pressure sensor 7, a second pressure sensor 13, and a temperature sensor 8. The base 1 has a flow channel 101. Two connectors 2 are provided, respectively located at both ends of the flow channel 101, and the projection of the connectors 2 onto the cross-section of the base 1 lies within the cross-section of the base 1. The V-cone throttling element 4 is disposed within the flow channel 101. Along the direction of fluid flow through the V-cone throttling element 4, the base 1 has a first high-pressure tap 103 and a second high-pressure tap 108 upstream of the V-cone throttling element 4, and a low-pressure tap 104 downstream of the V-cone throttling element 4. A differential pressure sensor 6 is mounted on the base 1. The sensor has a high-pressure connection port 601 and a low-pressure connection port 602. The high-pressure connection port 601 communicates with the first high-pressure tap 103, and the low-pressure connection port 602 communicates with the low-pressure tap 104. A first pressure sensor 7 is mounted on the base 1 and measures the pressure at the second high-pressure tap 108. A second pressure sensor 13 is mounted on the differential pressure sensor 6 and has a low-pressure measurement port 605 that communicates with the low-pressure connection port 602. The second pressure sensor 13 measures the pressure at the low-pressure measurement port 605. A temperature sensor 8 is mounted on the base 1 and measures the temperature of the fluid medium.

[0058] The aforementioned V-cone flowmeter connects to upstream and downstream pipelines by setting connectors 2 at both ends of the base 1. The projection of the connectors 2 on the cross-section of the base 1 is located within the cross-section of the base 1. Compared with the existing flange connection method, the connectors 2 are not only smaller in size and weight, but also do not occupy the space outside the base 1, thereby reducing the overall size and weight of the V-cone flowmeter. At the same time, the aforementioned V-cone flowmeter integrates the differential pressure sensor 6, the first pressure sensor 7, and the temperature sensor 8 on the base 1. The second pressure sensor 13 is integrated into the differential pressure sensor 6, so no additional installation is required during the measurement process. This not only facilitates pressure and temperature compensation during the measurement process of the V-cone flowmeter, but also further reduces the overall size and weight of the V-cone flowmeter compared to the existing additional installation method, allowing the V-cone flowmeter to be used in some narrow spaces.

[0059] It should be noted that calculating the flow rate based on the pressure difference measured by the differential pressure sensor 6, calculating the pressure compensation based on the pressure value measured by the first pressure sensor 7 or the second pressure sensor 13, and calculating the temperature compensation based on the temperature value measured by the temperature sensor 8 are all existing technologies and will not be elaborated here.

[0060] In some embodiments, such as Figure 1 As shown, the cross-section of the base 1 is square, and the differential pressure sensor 6, the first pressure sensor 7, and the temperature sensor 8 are respectively disposed on different sides of the base 1. This arrangement makes full use of the circumferential space of the base 1, optimizes the overall structure of the V-cone flowmeter, further improves the integration of the V-cone flowmeter, and reduces the overall volume of the V-cone flowmeter.

[0061] It is understood that in some other embodiments, the cross-sectional shape of the substrate 1 is not limited to square, and can be set to other shapes according to actual needs, without limitation.

[0062] In some embodiments, such as Figures 2 to 6 As shown, the V-cone flow meter also includes a connector 3, which is disposed between the connector 2 and the base 1. The connector 3 is mounted on the base 1, and the connector 2 is mounted on the connector 3. By providing the connector 3, when it is necessary to replace the V-cone throttling element 4 inside the V-cone flow meter, the base 1 can be directly removed from the connector 3 without having to remove the entire base 1 and connector 2 from the upstream and downstream pipelines and then remove the connector 2 from the base 1, thus making the disassembly and assembly of the base 1 more convenient.

[0063] It is understood that in some other embodiments, the connector 2 may also be directly fixedly connected to the base 1, and this is not a limitation.

[0064] Specifically, such as Figure 4As shown, the connector 2 is roughly a cylindrical structure. The connector 2 has a first through hole 201, which can communicate with the flow channel 101. The connector 2 includes a first connecting section 202, a second connecting section 203, and a limiting section 204. The first connecting section 202 is used to connect with the upstream or downstream pipe, the second connecting section 203 is used to connect with the connector 3, and the limiting section 204 is located between the first connecting section 202 and the second connecting section 203 to limit the length of the first connecting section 202 and the second connecting section 203.

[0065] like Figure 1 and Figure 5 As shown, the connector 3 has a roughly square block structure, and the projection of the connector 3 onto the cross-section of the base 1 coincides with the cross-section of the base 1, further ensuring that it does not occupy the external space of the V-cone flowmeter. A second through hole 301 is provided on the connector 3. Figures 1 to 3 As shown, the connector 3 is fixedly connected to the base 1 by bolts. The second connecting section 203 of the connector 2 is provided with external threads, and the inner sidewall of the second through hole 301 is provided with internal threads. Thus, the connector 2 is threadedly connected to the connector 3. After the connector 2, connector 3 and base 1 are connected, the first through hole 201, the second through hole 301 and the flow channel 101 are connected.

[0066] Furthermore, such as Figure 3 and Figure 6 As shown, a first sealing groove 302 is formed on the end face of the connector 3 near the base 1. By setting the first sealing groove 302, a sealing structure can be set inside the first sealing groove 302, thereby achieving sealing at the inlet and outlet ends of the base 1 without increasing the volume of the V-cone flowmeter, reducing the pressure loss of the fluid medium inside the base 1, and ensuring the accuracy of the measurement. Optionally, the sealing structure can be a sealing ring.

[0067] like Figure 3 and Figure 7 As shown, the V-cone flowmeter also includes a locking component. A first mounting groove 102 is provided at the inlet end of the base 1, and the locking component is used to fix the V-cone throttling element 4 within the first mounting groove 102. This design not only ensures that the V-cone throttling element 4 is stably fixed in the flow channel 101, preventing it from shaking due to fluid medium interference, but also facilitates the replacement of the V-cone throttling element 4 compared to traditional welding fixation, effectively reducing measurement costs.

[0068] Specifically, such as Figure 7 As shown, the first mounting groove 102 is a circular stepped groove, and the bottom of the first mounting groove 102 is connected to the flow channel 101. Figure 8As shown, the V-cone throttling element 4 includes a mounting portion 401, a connecting portion 402, and a throttling portion 403. The mounting portion 401 is generally a disc structure and can be placed on the stepped surface of the first mounting groove 102. The mounting portion 401 also has a flow-through hole 4011, through which the fluid medium can flow into the flow channel 101. The throttling portion 403 is generally a spindle-shaped structure, including a front cone and a rear cone. The front cone refers to the part that the fluid medium first contacts when flowing through the V-cone throttling element 4. The cone angle of the front cone ranges from 45° to 75°, and the cone angle of the rear cone ranges from 120° to 160°. The mounting portion 401 and the throttling portion 403 are connected by the connecting portion 402, which is a columnar structure, such as... Figure 3 As shown, both the connecting part 402 and the throttling part 403 pass through the first mounting groove 102 and are disposed in the flow passage 101.

[0069] Furthermore, such as Figure 7 and Figure 8 As shown, a first limiting hole 1021 is also provided on the first mounting groove 102, and a second limiting hole 4012 is provided on the mounting part 401. The first limiting hole 1021 and the second limiting hole 4012 can communicate with each other, and limiting members are provided in the first limiting hole 1021 and the second limiting hole 4012. By providing the limiting members, the rotation of the V-cone throttling element 4 in the first mounting groove 102 can be restricted. Optionally, the limiting member is a pin.

[0070] In some embodiments, such as Figure 3 and Figure 9 As shown, the locking element is a locking ring 5, which is threadedly connected to the inner wall of the first mounting groove 102. When the locking ring 5 locks the V-cone throttling element 4, the connecting part 402 and the throttling part 403 of the V-cone throttling element 4 are placed in the flow channel 101 through the first mounting groove 102, while the mounting part 401 of the V-cone throttling element 4 is placed on the stepped surface of the first mounting groove 102. Then, the locking ring 5 is turned to press the mounting part 401 of the V-cone throttling element 4 against the stepped surface of the first mounting groove 102, thereby locking the V-cone throttling element 4. Locking the V-cone throttling element 4 with the locking ring 5 facilitates the assembly and disassembly of the V-cone throttling element 4.

[0071] It is understood that in some other embodiments, the locking element may be other structures, such as screws. In this case, threaded holes need to be opened at corresponding positions on the mounting portion 401 of the V-cone throttling element 4 and the stepped surface of the first mounting groove 102, so that the mounting portion 401 of the V-cone throttling element 4 can be fixed on the stepped surface of the first mounting groove 102 by screws.

[0072] Furthermore, such as Figure 9As shown, a waist groove 501 is provided on the end face of the locking ring 5 away from the first mounting groove 102. By providing the waist groove 501, the flow resistance of the fluid medium flowing through the locking ring 5 can be reduced.

[0073] In some embodiments, such as Figures 1 to 3 As shown, the V-cone flow meter also includes a gas path adapter plate 9, which is disposed between the base 1 and the differential pressure sensor 6. The gas path adapter plate 9 has a high pressure test hole 901 and a low pressure test hole 902. The high pressure test hole 901 can communicate with the first high pressure tapping hole 103 and the high pressure connection hole 601, and the low pressure test hole 902 can communicate with the low pressure tapping hole 104 and the low pressure connection hole 602.

[0074] By setting up the gas path adapter plate 9, high-precision standard differential pressure sensors can be externally connected to the high-pressure test port 901 and low-pressure test port 902 on the gas path adapter plate 9 when the V-cone flowmeter malfunctions at the factory or during use. This allows for the detection of the accuracy of the differential pressure sensor 6 on the V-cone flowmeter, and calibration if inaccurate. Furthermore, calibrating the differential pressure sensor 6 via the gas path adapter plate 9 eliminates the need to remove the differential pressure sensor 6 from the V-cone flowmeter compared to traditional calibration methods, making the calibration operation more convenient and labor-saving.

[0075] like Figure 12 As shown, a first high-pressure adapter hole 903 and a first low-pressure adapter hole 904 are provided on the side of the gas path adapter plate 9 that is in contact with the substrate 1. Figure 3 As shown, the first high-pressure tap 103 can communicate with the first high-pressure adapter 903, and the high-pressure test port 901 is also connected to the first high-pressure adapter 903, thus achieving communication between the high-pressure test port 901 and the first high-pressure tap 103. The low-pressure tap 104 can communicate with the first low-pressure adapter 904, and the low-pressure test port 902 is also connected to the first low-pressure adapter 904, thus achieving communication between the low-pressure test port 902 and the low-pressure tap 104.

[0076] Furthermore, such as Figure 10 and Figure 12 As shown, on the side of the gas path adapter plate 9 that is in contact with the base 1, second sealing grooves 911 are provided around both the first high-pressure adapter hole 903 and the first low-pressure adapter hole 904. By providing the second sealing grooves 911, a sealing element can be installed within them, thereby achieving a seal between the base 1 and the gas path adapter plate 9 without increasing the volume of the V-cone flowmeter, reducing pressure loss during transmission, and ensuring measurement accuracy. Optionally, the sealing element can be a sealing ring.

[0077] Furthermore, such as Figure 10 and Figure 12As shown, a first positioning hole 106 is provided on the side of the substrate 1 that is in contact with the gas path adapter plate 9, and a third positioning hole 908 is provided on the side of the gas path adapter plate 9 that is in contact with the substrate 1. Figure 15 As shown, the first positioning hole 106 can communicate with the third positioning hole 908, and a first positioning element 11 is also provided in the first positioning hole 106 and the third positioning hole 908. When installing the gas path adapter plate 9 onto the base 1, the first positioning element 11 can be placed in the first positioning hole 106 first, and then the third positioning hole 908 can be aligned with the first positioning element 11 and the gas path adapter plate 9 can be placed on the base 1, thus realizing the positioning of the gas path adapter plate 9 on the base 1. By setting the first positioning hole 106, the third positioning hole 908 and the first positioning element 11, the assembly between the base 1 and the gas path adapter plate 9 can be facilitated, thereby improving the assembly efficiency of the V-cone flowmeter.

[0078] It should be noted that at least two sets of the first positioning hole 106 and the third positioning hole 908 are provided, which can ensure the stable positioning of the air circuit adapter plate 9.

[0079] Furthermore, such as Figure 10 and Figure 12 As shown, a first connecting hole 105 is provided on the side of the base 1 that is in contact with the air passage adapter plate 9, and a third connecting hole 907 is provided on the side of the air passage adapter plate 9 that is in contact with the base 1. The first connecting hole 105 can communicate with the third connecting hole 907, and both the first connecting hole 105 and the third connecting hole 907 are provided with internal threads, so that the base 1 and the air passage adapter plate 9 can be fixedly connected by bolts.

[0080] like Figure 13 As shown, a second high-pressure adapter hole 905 and a second low-pressure adapter hole 906 are provided on the side of the gas path adapter plate 9 that is in contact with the differential pressure sensor 6. Figure 3 As shown, the second high-voltage adapter port 905 can communicate with the high-voltage connection port 601, and the high-voltage test port 901 is also connected to the second high-voltage adapter port 905, thereby achieving communication between the high-voltage test port 901 and the high-voltage connection port 601, and between the high-voltage connection port 601 and the first high-voltage tapping port 103. The second low-voltage adapter port 906 can communicate with the low-voltage connection port 602, and the low-voltage test port 902 is also connected to the second low-voltage adapter port 906, thereby achieving communication between the low-voltage test port 902 and the low-voltage connection port 602, and between the low-voltage connection port 602 and the low-voltage tapping port 104.

[0081] Furthermore, such as Figure 11 and Figure 13As shown, on the side of the gas path adapter plate 9 that is in contact with the differential pressure sensor 6, second sealing grooves 911 are provided on the periphery of both the second high-pressure adapter hole 905 and the second low-pressure adapter hole 906. By providing the second sealing grooves 911, a sealing element can be installed within them, thereby achieving a seal between the gas path adapter plate 9 and the differential pressure sensor 6 without increasing the volume of the V-cone flowmeter, reducing pressure loss during transmission, and ensuring measurement accuracy. Optionally, the sealing element can be a sealing ring.

[0082] Furthermore, such as Figure 11 and Figure 13 As shown, a second positioning hole 604 is provided on the side of the differential pressure sensor 6 that is in contact with the gas path adapter plate 9, and a fourth positioning hole 910 is provided on the side of the gas path adapter plate 9 that is in contact with the differential pressure sensor 6. Figure 3 As shown, the second positioning hole 604 can communicate with the fourth positioning hole 910, and a second positioning element 12 is also provided in the second positioning hole 604 and the fourth positioning hole 910. When installing the differential pressure sensor 6 onto the gas path adapter plate 9, the second positioning element 12 can be placed in the fourth positioning hole 910 first, and then the second positioning hole 604 can be aligned with the second positioning element 12 to place the differential pressure sensor 6 onto the gas path adapter plate 9, thus realizing the positioning of the differential pressure sensor 6 on the gas path adapter plate 9. By setting the second positioning hole 604, the fourth positioning hole 910 and the second positioning element 12, the assembly between the differential pressure sensor 6 and the gas path adapter plate 9 can be facilitated, thereby improving the assembly efficiency of the V-cone flowmeter.

[0083] It should be noted that at least two sets of the second positioning hole 604 and the fourth positioning hole 910 are provided, which can ensure the stable positioning of the differential pressure sensor 6.

[0084] Furthermore, such as Figure 11 and Figure 13 As shown, a second connecting hole 603 is provided on the side of the differential pressure sensor 6 that is in contact with the gas path adapter plate 9, and a fourth connecting hole 909 is provided on the side of the gas path adapter plate 9 that is in contact with the differential pressure sensor 6. The second connecting hole 603 can communicate with the fourth connecting hole 909, and both the second connecting hole 603 and the fourth connecting hole 909 are provided with internal threads, so that the differential pressure sensor 6 and the gas path adapter plate 9 can be fixedly connected by bolts.

[0085] like Figure 3As shown, the V-cone flowmeter also includes a plug 10, which is used to seal the high-pressure test port 901 and the low-pressure test port 902. By setting the plug 10, when the differential pressure sensor 6 does not need to be calibrated, the high-pressure test port 901 and the low-pressure test port 902 can be sealed with the plug 10 to ensure the sealing of the V-cone flowmeter and avoid pressure loss. When the differential pressure sensor 6 needs to be calibrated, simply pull out the plug 10 and connect the high-pressure test port 901 and the low-pressure test port 902 to an external high-precision standard differential pressure sensor, which is convenient to operate.

[0086] Furthermore, such as Figure 3 As shown, the gas circuit adapter plate 9 also has two plug threaded holes 912. The high-pressure test hole 901 and the low-pressure test hole 902 are respectively opened at the bottom of the two plug threaded holes 912, and the plug 10 is set in the plug threaded hole 912. By setting the plug threaded hole 912 and setting the plug 10 in the plug threaded hole 912, not only can the sealing performance be further improved, but the production and manufacturing of the plug 10 can also be facilitated.

[0087] like Figure 1 , Figure 7 and Figure 16 As shown, a second mounting groove 107 is provided on the side wall of the base 1, and a second high-pressure tapping hole 108 is provided at the bottom of the second mounting groove 107. The first pressure sensor 7 is partially disposed in the second mounting groove 107. By placing the first pressure sensor 7 partially in the second mounting groove 107, the cross-sectional size of the V-cone flowmeter can be further reduced, thereby reducing the overall volume of the V-cone flowmeter.

[0088] like Figure 3 , Figure 15 and Figure 17 As shown, a fixing hole 109 is provided on the side wall of the substrate 1, and a fixing member 801 is provided on the temperature sensor 8. The fixing member 801 can be inserted into the fixing hole 109, thereby fixing the temperature sensor 8 on the substrate 1.

[0089] The V-cone flowmeter provided in this embodiment connects to upstream and downstream pipelines by setting connectors 2 at both ends of the base 1. The projection of the connectors 2 on the cross-section of the base 1 is located within the cross-section of the base 1. Compared with the existing flange connection method, the connectors 2 are not only smaller in size and weight, but also do not occupy the space outside the base 1, thereby reducing the overall size and weight of the V-cone flowmeter. At the same time, the differential pressure sensor 6, the first pressure sensor 7, and the temperature sensor 8 are all integrated into the base 1, so no additional installation is required during the measurement process. This not only facilitates pressure and temperature compensation during the measurement process of the V-cone flowmeter, but also further reduces the overall size and weight of the V-cone flowmeter compared with the existing additional installation method, allowing the V-cone flowmeter to be used in some narrow spaces.

[0090] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A V-cone flow meter, characterized in that, include: A substrate (1) having an overflow channel (101) formed thereon; The connector (2) is provided in two parts, and the two connectors (2) are respectively provided at both ends of the flow channel (101). The projection of the connector (2) on the cross section of the substrate (1) is located within the cross section of the substrate (1). V-cone throttling element (4), the V-cone throttling element (4) is disposed in the flow channel (101) along the direction of the fluid medium flowing through the V-cone throttling element (4), the substrate (1) has a first high pressure tap (103) and a second high pressure tap (108) at the upstream position of the V-cone throttling element (4), and the substrate (1) has a low pressure tap (104) at the downstream position of the V-cone throttling element (4); A differential pressure sensor (6) is disposed on the substrate (1). The differential pressure sensor (6) has a high-pressure connection hole (601) and a low-pressure connection hole (602). The high-pressure connection hole (601) can communicate with the first high-pressure tapping hole (103), and the low-pressure connection hole (602) can communicate with the low-pressure tapping hole (104). The first pressure sensor (7) is disposed on the substrate (1) and is used to measure the pressure at the second high pressure tap (108). The second pressure sensor (13) is disposed on the differential pressure sensor (6). The differential pressure sensor (6) is also provided with a low pressure measuring hole (605). The low pressure measuring hole (605) is connected to the low pressure connecting hole (602). The second pressure sensor (13) is used to measure the pressure at the low pressure measuring hole (605). Temperature sensor (8) is disposed on the substrate (1) and is used to measure the temperature of the fluid medium.

2. The V-cone flowmeter according to claim 1, characterized in that, The V-cone flowmeter also includes a locking component. The inlet end of the base (1) is provided with a first mounting groove (102). The locking component is used to fix the V-cone throttling element (4) in the first mounting groove (102).

3. The V-cone flowmeter according to claim 2, characterized in that, The locking element is a locking ring (5), which is threadedly connected to the inner wall of the first mounting groove (102).

4. The V-cone flowmeter according to claim 3, characterized in that, The locking ring (5) has a waist groove (501) on the end face away from the first mounting groove (102).

5. The V-cone flowmeter according to claim 1, characterized in that, The V-cone flow meter also includes a connector (3), which is disposed between the connector (2) and the base (1). The connector (3) is mounted on the base (1), and the connector (2) is mounted on the connector (3).

6. The V-cone flowmeter according to claim 5, characterized in that, The connector (3) has a first sealing groove (302) on its end face near the base (1).

7. The V-cone flowmeter according to claim 1, characterized in that, The V-cone flowmeter also includes a gas path adapter plate (9), which is disposed between the base (1) and the differential pressure sensor (6). The gas path adapter plate (9) is provided with a high pressure test hole (901) and a low pressure test hole (902). The high pressure test hole (901) can communicate with the first high pressure tapping hole (103) and the high pressure connection hole (601), and the low pressure test hole (902) can communicate with the low pressure tapping hole (104) and the low pressure connection hole (602).

8. The V-cone flowmeter according to claim 7, characterized in that, The V-cone flowmeter also includes a plug (10) for sealing the high-pressure test hole (901) and the low-pressure test hole (902).

9. The V-cone flowmeter according to claim 1, characterized in that, The cross-section of the substrate (1) is square, and the differential pressure sensor (6), the first pressure sensor (7) and the temperature sensor (8) are respectively disposed on different sides of the substrate (1).

10. The V-cone flowmeter according to claim 1, characterized in that, The base (1) has a second mounting groove (107) on its side wall, the second high pressure tapping hole (108) is located at the bottom of the second mounting groove (107), and the first pressure sensor (7) is partially located in the second mounting groove (107).

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