Highly integrated balanced flow meter

Abstract

The application relates to a high-integration balance flowmeter which comprises a measuring sensor, a pressure-taking pipe assembly, a pressure-taking connector, a three-valve group and a differential pressure transmitter; the pressure-taking pipe assembly is arranged at the top of the measuring sensor, the pressure-taking connector is arranged at the top of the pressure-taking pipe assembly, the three-valve group is arranged at the top of the pressure-taking connector, and the differential pressure transmitter is arranged at the top of the three-valve group; the pressure-taking pipe assembly comprises a supporting protection pipe and two pressure-taking short pipes; the two pressure-taking short pipes are arranged in the cavity of the supporting protection pipe, and one end of each of the two pressure-taking short pipes is communicated with the front and back sides of a throttle plate in the measuring sensor; the other end of each of the two pressure-taking short pipes is connected with two inlets of the pressure-taking connector; the pressure-taking connector comprises a mounting seat and two adjusting screws; two symmetrical pressure-taking channels are formed in the mounting seat, screw channels for the adjusting screws to pass through are formed in the opposite sides of the mounting seat, and the screw channels are communicated with the pressure-taking channels.

Description

Technical Field

[0001] This application relates to the field of differential pressure flow meter technology, and in particular to a highly integrated balanced flow meter. Background Technology

[0002] Differential pressure flow meters have a long history and are the most widely used among various flow instruments. They are based on Bernoulli's theorem and the flow continuity equation. They determine the flow rate by measuring the pressure difference generated when fluid flows through a throttling element in a pipe and combining this with known operating conditions.

[0003] Existing differential pressure flow meters can be referenced. Figure 9 As shown, it consists of a transmitter, valve assembly, two pressure tapping short pipes, and a measuring sensor connected in sequence. Each pressure tapping short pipe also has a primary valve welded to its top. Due to the large size of the primary valve, a sufficiently large gap must be reserved between the two pressure tapping short pipes in order for the primary valve to be installed smoothly at the top of the two pressure tapping short pipes. A sufficiently large distance must also be reserved between the valve assembly and the pressure tapping short pipes. This results in a large structural volume of the entire differential pressure flow meter, which requires sufficient installation space. If the on-site installation space is limited, it will be difficult to implement and apply. Summary of the Invention

[0004] In view of this, this application proposes a highly integrated balanced flow meter.

[0005] According to one aspect of this application, a highly integrated balanced flow meter is provided, comprising: a measuring sensor, a pressure tap assembly, a pressure tap connector, a three-valve manifold, and a differential pressure transmitter; The pressure tapping assembly is located on top of the measuring sensor, the pressure tapping connector is located on top of the pressure tapping assembly, the three-valve manifold is located on top of the pressure tapping connector, and the differential pressure transmitter is located on top of the three-valve manifold. The pressure tapping tube assembly includes: a support and protection tube and two pressure tapping short tubes; both pressure tapping short tubes are disposed inside the cavity of the support and protection tube, and one end of each pressure tapping short tube is connected to the front and rear sides of the throttle plate inside the measuring sensor, respectively; the other end of each pressure tapping short tube is connected to the two inlets of the pressure tapping connector, respectively. The pressure tapping connector includes a mounting base and two adjusting screws. The mounting base has two inlets at its bottom and two outlets at its top. The mounting base has two symmetrical pressure tapping channels inside, one end of each channel connecting to the two inlets and the other end connecting to the two outlets. Threaded channels are provided on opposite sides of the mounting base for the adjusting screws to pass through, and these threaded channels communicate with the pressure tapping channels, allowing the adjusting screws to block or open the pressure tapping channels when moving in and out of them. The two inlets of the three-valve manifold are respectively positioned opposite to and connected to the two outlets of the mounting base.

[0006] In one possible implementation, the measuring sensor includes: a throttling element and the throttling plate; The throttling device has a cavity with openings at both ends, and the two ends of the throttling device are suitable for connection with a measuring pipe; The throttling plate is located inside the throttling element and is opposite to the opening of the throttling element, covering the inner cross section of the throttling element. The throttling plate has two or more throttling holes. Two pressure taps are provided on the side wall of the throttling device, and both pressure taps penetrate the side wall of the throttling device; the two pressure taps are located on both sides of the throttling plate and are suitable for connecting to one end of two pressure tapping short pipes respectively.

[0007] In one possible implementation, a receiving ring protrudes from one end of the support protection tube connected to the pressure tapping connector. The receiving ring is fixedly sleeved on the end of the support protection tube to support the pressure tapping connector.

[0008] In one possible implementation, each pressure tapping channel includes: a first connecting channel, a horizontal channel, and a second connecting channel connected in sequence; One end of the first connecting channel is opposite to and connected to the inlet of the mounting base, and the other end of the first connecting channel is connected to one end of the second connecting channel through a horizontal channel. The second connecting channel is opposite to and connected to the outlet of the mounting base. The length direction of the horizontal channel is perpendicular to the length direction of the first connecting channel and the length direction of the second connecting channel.

[0009] In one possible implementation, the threaded channel and the outlet of the mounting base are located on adjacent sides of the mounting base, respectively; and the threaded channel is connected to the second connecting channel of the pressure tapping channel.

[0010] In one possible implementation, the end of the adjusting screw is provided with a handle.

[0011] In one possible implementation, the mounting base has two or more flange holes for mounting the three-valve manifold.

[0012] In one possible implementation, the three-valve manifold adopts an I-shaped double-flanged three-valve manifold.

[0013] Beneficial effects: Positive and negative pressure taps are located directly above the measuring sensor. As fluid flows through the sensor, two short pressure taps collect positive and negative pressure signals within the sensor. A support and protection tube is located outside the two short pressure taps to provide support and protection. The pressure tap connector acts as a bridge between the two short pressure taps and the three-valve manifold. Its internal pressure tapping channel smoothly delivers the fluid from the two short pressure taps into the three-valve manifold. The three-valve manifold then transmits the collected positive and negative pressure signals to the differential pressure transmitter, which calculates the fluid flow rate. The adjusting screw on the pressure tap connector allows adjustment of the pressure tapping channel opening. Moving the adjusting screw inwards from the mounting base reduces the opening; moving it outwards opens it. When the adjusting screw is completely removed from the mounting base, the pressure tapping channel is connected to the outside, allowing the fluid inside the mounting base to be drained. The pressure tapping connector and three-valve manifold can function as the primary valve on existing flow meters. This application eliminates the primary valve structure, reducing the distance between the two pressure tapping short pipes and allowing for a shorter length of these pipes. To ensure the operational stability of the pressure tapping short pipes, supporting protective tubes are wrapped around their outer sides, improving the integration and compactness of the equipment. This improvement also significantly reduces the space occupied during installation and operation, resulting in a simpler and more rational pipeline layout, which is beneficial for achieving higher-density equipment configuration within limited space. Furthermore, the compact design reduces material usage and overall weight, lowering manufacturing costs and transportation difficulties to some extent, further optimizing the overall economic efficiency and space utilization of the system.

[0014] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0015] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0016] Figure 1 A cross-sectional view of a highly integrated balanced flow meter according to an embodiment of this application is shown; Figure 2 This diagram illustrates the main structure of a highly integrated balanced flow meter according to an embodiment of this application. Figure 3 Show Figure 1 A magnified view of a portion of the image; Figure 4 A partial structural diagram of a highly integrated balanced flow meter according to an embodiment of this application is shown; Figure 5 A cross-sectional view of a pressure-tapping connector according to an embodiment of this application is shown; Figure 6 This diagram shows the main structure of the pressure-tapping connector according to an embodiment of this application; Figure 7 This diagram shows the main structure of the pressure-tapping connector according to an embodiment of this application; Figure 8 A partial structural diagram of a highly integrated balanced flow meter according to an embodiment of this application is shown; Figure 9 A structural diagram of a flow meter in the prior art is shown. Detailed Implementation

[0017] Various exemplary embodiments, features, and aspects of the present invention will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0018] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, 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.

[0019] 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 utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0020] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0021] Furthermore, to better illustrate this utility model, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this utility model can be implemented even without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail, in order to highlight the main points of this utility model.

[0022] Figure 1A cross-sectional view of a highly integrated balanced flow meter according to an embodiment of this application is shown; Figure 2 This diagram illustrates the main structure of a highly integrated balanced flow meter according to an embodiment of this application; as shown... Figure 1 As shown, this highly integrated balanced flow meter includes: a measuring sensor 100, a pressure tapping assembly 200, a pressure tapping connector, a three-valve manifold 400, and a differential pressure transmitter 500; the pressure tapping assembly 200 is disposed on top of the measuring sensor 100, the pressure tapping connector is disposed on top of the pressure tapping assembly 200, the three-valve manifold 400 is disposed on top of the pressure tapping connector, and the differential pressure transmitter 500 is disposed on top of the three-valve manifold 400; the pressure tapping assembly 200 includes: a support and protection tube 220 and two pressure tapping short tubes 210; both pressure tapping short tubes 210 are disposed inside the cavity of the support and protection tube 220, and one end of each pressure tapping short tube 210 is connected to the front and rear sides of the throttling plate 120 inside the measuring sensor 100 respectively; the other end of each pressure tapping short tube 210 is connected to the two inlets 360 of the pressure tapping connector respectively; The pressure tapping connector includes: a mounting base 300 and two adjusting screws 310. The bottom of the mounting base 300 has two inlets 360 and the top of the mounting base 300 has two outlets 340. The interior of the mounting base 300 has two symmetrical pressure tapping channels 320. One end of each pressure tapping channel 320 is connected to the two inlets 360, and the other end of each pressure tapping channel 320 is connected to the two outlets 340. Threaded channels 350 are provided on opposite sides of the mounting base 300 for the adjusting screws 310 to pass through, and the threaded channels 350 are connected to the pressure tapping channels 320 so that the adjusting screws 310 can block or open the pressure tapping channels 320 when entering or exiting the threaded channels 350. The two inlets of the three-valve manifold 400 are respectively arranged opposite to and connected to the two outlets 340 of the mounting base 300.

[0023] It should be noted that a positive and negative pressure tapping port 130 is provided directly above the measuring sensor 100. When the fluid flows through the measuring sensor 100, the two pressure tapping short tubes 210 collect the positive and negative pressure measurement signals of the fluid inside the measuring sensor 100. The support and protection tube 220 is located outside the two pressure tapping short tubes 210 and is used to support and protect the two pressure tapping short tubes 210. The pressure tapping connector serves as a connecting bridge between the two pressure tapping short tubes 210 and the three-valve group 400. Its internal pressure tapping channel 320 can smoothly send the fluid in the two pressure tapping short tubes 210 into the three-valve group 400 to introduce the positive and negative pressure measurement signals in the two pressure tapping short tubes 210. The three-valve group 400 leads the collected positive and negative pressure signals to the differential pressure transmitter 500, and then the differential pressure transmitter 500 calculates the flow rate of the fluid. The adjusting screw 310 on the pressure tap connector can adjust the opening of the pressure tapping channel 320. When the adjusting screw 310 moves inward into the mounting base 300, the opening of the pressure tapping channel 320 can be reduced; when the adjusting screw 310 moves outward from the mounting base 300, the opening of the pressure tapping channel 320 can be opened. When the adjusting screw 310 is completely removed from the mounting base 300, the pressure tapping channel 320 can be connected to the outside, at which point the fluid inside the mounting base 300 can be drained. This application reduces the distance between the two pressure tapping short tubes 210 and shortens the length of the pressure tapping short tubes 210. At the same time, to ensure the working stability of the pressure tapping short tubes 210, a support and protection tube 220 is wrapped around the outside of the two pressure tapping short tubes 210 to improve the integration of the device. The design of the adjusting screw 310 on the pressure tap connector can function as a primary valve on existing flow meters, and can also significantly improve the integration and compactness of the overall device. This design effectively reduces the complexity of the system and enhances the stability and maintainability of the device. Meanwhile, this improvement also significantly reduces the space occupied by the equipment during installation and operation, resulting in a simpler and more rational piping layout, which is conducive to achieving higher-density equipment configuration in limited spaces. In addition, the compact design also reduces material usage and overall weight, thereby reducing manufacturing costs and transportation difficulties to a certain extent, and further optimizing the overall economy and space utilization efficiency of the system.

[0024] In one possible implementation, the measuring sensor 100 includes: a throttling element 110 and a throttling plate 120; the throttling element 110 has a cavity with openings at both ends, and the two ends of the throttling element 110 are adapted to connect to a measuring pipe; the throttling plate 120 is disposed inside the throttling element 110 and opposite to the openings of the throttling element 110 and covers the inner cross-section of the throttling element 110, and the throttling plate 120 has two or more throttling holes 121; two pressure tapping holes 130 are opened on the side wall of the throttling element 110, and both pressure tapping holes 130 penetrate the side wall of the throttling element 110; the two pressure tapping holes 130 are respectively located on both sides of the throttling plate 120 and are adapted to communicate with one end of two pressure tapping short pipes 210 respectively. Further, as... Figure 4As shown, the main body of the throttling element 110 is an annular structure, and the main body of the throttling plate 120 is a circular plate structure. The throttling plate 120 is installed inside the throttling element 110 and covers the circular cross-section of the throttling element 110. The throttling plate 120 has two or more throttling holes 121, which are suitable for the passage of fluid. When the fluid flows through the throttling plate 120 inside the throttling element 110, it is throttled and depressurized by the throttling plate 120. Therefore, there is a pressure difference between the fluid on both sides of the throttling plate 120. The two pressure tapping holes 130 are located on both sides of the throttling plate 120 and are respectively connected to the two pressure tapping short pipes 210, thereby ensuring that the fluid on both sides of the throttling plate 120 can flow smoothly from the inside of the throttling element 110 into the two pressure tapping short pipes 210. The bottom surfaces of the two pressure tapping short pipes 210 are fixed to the outer wall of the throttling device 110 by welding to improve the connection stability and sealing between the pressure tapping short pipes 210 and the throttling device 110.

[0025] Furthermore, the throttle plate 120 has four throttle holes 121, which are arranged around the throttle plate 120 and symmetrically arranged with the center of the throttle plate 120 as the center.

[0026] Furthermore, the length h3 of the throttling element 110 is 33mm.

[0027] The inner diameter h1 of the throttling device 110 is 122mm.

[0028] The outer diameter h2 of the throttling device 110 is 162 mm.

[0029] Furthermore, the thickness h3 of the throttle plate 120 is 13mm.

[0030] The diameter of the throttling orifice 121 is 12.5 mm.

[0031] The overall length h5 is 530mm.

[0032] The center distance between the two pressure tapping holes 130, which is also the distance between the two pressure tapping short tubes 210, is 10mm.

[0033] In one possible implementation, the main body of the pressure tapping short tube 210 is a circular tube structure, and two pressure tapping short tubes 210 are arranged parallel to each other inside the cavity of the support and protection tube 220; the bottom of the pressure tapping short tube 210 is connected to the pressure tapping hole 130 to access the fluid inside the pressure tapping hole 130. Furthermore, the length h4 of the pressure tapping short tube 210 is 105 mm.

[0034] In one possible implementation, the main body of the support protection tube 220 is a circular tube structure. One end of the support protection tube 220 connected to the throttling device 110 is fixed to the outer wall of the throttling device 110 by welding. One end of the support protection tube 220 connected to the pressure tapping connector has a protruding receiving ring 221, which is fixedly sleeved on the end of the support protection tube 220 to support the pressure tapping connector. Preferably, the receiving ring 221 and the support protection tube 220 are integrally formed.

[0035] Preferably, the ratio of the inner diameter of the support and protection tube 220 to the outer diameter of the single pressure tapping tube 210 is 4 / 1. Further, the inner diameter of the support and protection tube 220 is 24 mm; the outer diameter of the single pressure tapping tube 210 is 6 mm.

[0036] In one possible implementation, the top end of the pressure tapping tube 210 protrudes relative to the top surface of the support protection tube 220, so that the pressure tapping tube 210 can be inserted into the inlet 360 of the mounting base 300.

[0037] In one possible implementation, such as Figure 5 and Figure 6 As shown, the main body of the mounting base 300 is a rectangular block structure. A connecting truncated cone protrudes from one side of the mounting base 300 that connects to the pressure tapping tube assembly 200. The diameter of the connecting truncated cone is larger than the outer diameter of the receiving ring 221. Two inlets 360 of the mounting base 300 are opened on the connecting truncated cone. The connecting truncated cone is suitable for contacting the top of the receiving ring 221 and the support protection tube 220. Two pressure tapping short tubes 210 are respectively inserted into the two inlets 360 and welded to the mounting base 300 to ensure that no fluid flows out from between the pressure tapping short tubes 210 and the mounting base 300.

[0038] Furthermore, the mounting base 300 has a length of 84 mm, a width of 62 mm, and a thickness of 20 mm.

[0039] Preferably, the mounting base 300 is fixed to the support protection tube 220 and the receiving ring 221 by welding.

[0040] Preferably, the mounting base 300, the support and protection tube 220, and the pressure tapping short tube 210 are made of stainless steel 304 or 316, etc.

[0041] In one possible implementation, such as Figure 5As shown, each pressure tapping channel 320 includes: a first connecting channel 321, a horizontal channel 322, and a second connecting channel 323 connected in sequence; one end of the first connecting channel 321 is opposite to and connected to the inlet 360 of the mounting base 300, and the other end of the first connecting channel 321 is connected to one end of the second connecting channel 323 through the horizontal channel 322; the second connecting channel 323 is opposite to and connected to the outlet 340 of the mounting base 300; the length direction of the horizontal channel 322 is perpendicular to the length direction of the first connecting channel 321 and the length direction of the second connecting channel 323. Figure 5 As shown, the first connecting channel 321, the horizontal channel 322, and the second connecting channel 323 are arranged in a Z-shape. The two pressure tapping channels 320 have the same structure, but the two pressure tapping channels 320 are arranged symmetrically about the central axis of the mounting base 300.

[0042] Preferably, the diameter of the horizontal channel 322 is greater than the diameter of the second connecting channel 323, which is greater than the diameter of the first connecting channel 321.

[0043] Furthermore, the threaded channel 350 and the outlet 340 of the mounting base 300 are located on adjacent sides of the mounting base 300; and the threaded channel 350 is connected to the second connecting channel 323 of the pressure tapping channel 320. For example... Figure 5 As shown, two adjusting screws 310 are installed on the side wall of the mounting base 300. The adjusting screws 310 are screwed into the threaded channel 350 to connect with the mounting base 300. The threaded connection not only ensures the sealing capability inside the mounting base 300, but also allows for easy adjustment of the insertion depth of the adjusting screws 310. When the insertion length of the adjusting screws 310 is large, the opening of the channel at the connection between the second connecting channel 323 and the horizontal channel 322 of the pressure tapping channel 320 can be reduced or even closed, thereby hindering the flow of fluid in the pressure tapping channel 320. When the adjusting screws 310 are completely removed, the pressure tapping channel 320 is opened, facilitating the rapid drainage of residual fluid in the mounting base 300, preventing the accumulation of impurities or blockage, and ensuring long-term stable operation of the system. In addition, during maintenance or calibration, the flexible operation of the adjusting screws 310 simplifies the cleaning and debugging process, improving the overall reliability and service life of the equipment.

[0044] In one possible implementation, a handle 311 is fixedly provided at the end of the adjusting screw 310. Furthermore, the main body of the handle 311 has a hexagonal prism structure. This structure facilitates precise operation using a standard hex wrench, ensuring stability and consistency during adjustment, effectively shortening adjustment time, improving the overall system maintenance efficiency, and simplifying the daily inspection and cleaning process of the pressure tap connector.

[0045] In one possible implementation, such as Figure 5As shown, a pressure relief channel is provided along the central axis of the adjusting screw 310, and a pressure relief channel is also provided inside the handheld part 311. The venting bolt 312 is located on the side of the handheld part 311 away from the adjusting screw 310 and is suitable for threading into the pressure relief channel and connecting with the handheld part 311. Removing the venting bolt 312 opens the pressure relief channel, which can release the gas in the equipment. If the gas is not discharged when the medium is introduced, it is easy to get stuck and cause the water to not flow smoothly. The setting of the pressure relief channel can avoid damage to the equipment or pipeline.

[0046] In one possible implementation, the handheld part 311 has an identification hole 313.

[0047] In one possible implementation, the mounting base 300 has two or more flange holes 330 for mounting the three-valve manifold 400. Further, the mounting base 300 has four flange holes 330, all of which are circular holes located at the four corners of the mounting base 300 and extending through it, so that the mounting base 300 and the three-valve manifold 400 are fixed together by bolts.

[0048] To improve the sealing performance of the connection between the mounting base 300 and the three-valve manifold 400, a polytetrafluoroethylene O-ring can be installed between the mounting base 300 and the three-valve manifold 400 to seal the gap between them.

[0049] It should be noted that the core function of the three-valve manifold 400 is to control the opening and closing of the measured medium and to balance pressure to protect the equipment. Its main functions are as follows: **Conduction and Isolation:** Two shut-off valves control the connection between the positive and negative pressure sides of the differential pressure transmitter 500 and the pressure tapping pipe 210, respectively. The medium is connected when measurement is needed and disconnected during maintenance or shutdown, ensuring operational safety. **Pressure Balancing:** The middle balancing valve balances the pressure difference between the positive and negative pressure chambers of the differential pressure transmitter 500, preventing damage due to sudden pressure changes on one side during startup or shutdown, and also helping to improve measurement accuracy. **Auxiliary Maintenance and Calibration:** During equipment commissioning, shutdown, or zero-point calibration, the specific operating sequence of the three-valve manifold (e.g., opening the high-pressure valve first, then the low-pressure valve, and finally closing the balancing valve) allows for safe completion of the process without interrupting the entire production system.

[0050] Furthermore, the three-valve manifold 400 adopts an I-beam type double-flange three-valve manifold, with flange holes at both the top and bottom ends. The bottom of the three-valve manifold 400 is fixedly connected to the mounting base 300 by four bolts 600, and the top of the three-valve manifold 400 is connected to the differential pressure transmitter 500 by four bolts 700. The two outlets at the top of the three-valve manifold 400 are opposite to and connected to the two inlets at the bottom of the differential pressure transmitter 500. To improve the sealing performance between the three-valve manifold 400 and the differential pressure transmitter 500, a polytetrafluoroethylene (PTFE) O-ring can be installed between the differential pressure transmitter 500 and the three-valve manifold 400 to seal the gap between them. When fluid flows through the throttling plate 120 in the pipeline, a pressure difference will be generated at the pressure tapping points before and after the throttling plate 120. The pressure difference is led to the differential pressure transmitter 500 through two pressure tapping short pipes 210. The differential pressure transmitter 500 is used to receive and process the differential pressure signal and convert it into a standard signal output, thereby performing flow calculation and display.

[0051] Furthermore, the differential pressure transmitter 500 used in this application is model Rosemount 3051CD series.

[0052] The advantages of this invention are: ① High overall equipment integration, optimizing the limitations of on-site installation space and improving production efficiency; ② Reduced procurement of standard parts, miniaturization of the overall equipment, and lower initial commissioning and material costs; ③ Optimized operating flow; ④ Convenient installation, low risk of safety accidents, and significantly reduced unsafe factors.

[0053] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A highly integrated balanced flow meter, characterized in that, include: Measurement sensors, pressure tapping assemblies, pressure tapping connectors, three-valve manifolds, and differential pressure transmitters; The pressure tapping tube assembly is located on top of the measuring sensor, the pressure tapping connector is located on top of the pressure tapping tube assembly, the three-valve assembly is located on top of the pressure tapping connector, and the differential pressure transmitter is located on top of the three-valve assembly. The pressure tapping tube assembly includes: a support and protection tube and two pressure tapping short tubes; both pressure tapping short tubes are disposed inside the cavity of the support and protection tube, and one end of each pressure tapping short tube is connected to the front and rear sides of the throttling plate inside the measuring sensor, respectively; the other end of each pressure tapping short tube is connected to the two inlets of the pressure tapping connector, respectively. The pressure tapping connector includes a mounting base and two adjusting screws. The mounting base has two inlets at its bottom and two outlets at its top. The mounting base has two symmetrical pressure tapping channels inside, one end of each channel communicating with one of the inlets and the other end communicating with one of the outlets. Threaded channels are formed on opposite sides of the mounting base for the adjusting screws to pass through, and these threaded channels communicate with the pressure tapping channels, allowing the adjusting screws to adjust the opening of the pressure tapping channels as they move in and out of the threaded channels. The two inlets of the three-valve assembly are respectively positioned opposite to and connected to the two outlets of the mounting base.

2. The highly integrated balanced flow meter according to claim 1, characterized in that, The measuring sensor includes: a throttling element and the throttling plate; The throttling device has a cavity with openings at both ends, and the two ends of the throttling device are suitable for connection with a measuring pipe; The throttling plate is disposed inside the throttling element and opposite to the opening of the throttling element and covers the inner cross section of the throttling element; the throttling plate is provided with two or more throttling holes. The throttling device has two pressure taps on its sidewall, and both pressure taps penetrate the sidewall of the throttling device; the two pressure taps are located on opposite sides of the throttling plate and are adapted to communicate with one end of the two pressure tapping short pipes respectively.

3. The highly integrated balanced flow meter according to claim 1, characterized in that, The end of the support protection tube that connects to the pressure tapping connector has a protruding receiving ring, which is fixedly sleeved on the end of the support protection tube to support the pressure tapping connector.

4. The highly integrated balanced flow meter according to claim 1, characterized in that, Each of the pressure tapping channels includes: a first connecting channel, a horizontal channel, and a second connecting channel connected in sequence; One end of the first connecting channel is opposite to and connected to the inlet of the mounting base, and the other end of the first connecting channel is connected to one end of the second connecting channel through the horizontal channel. The second connecting channel is opposite to and connected to the outlet of the mounting base. The length direction of the horizontal channel is perpendicular to the length direction of the first connecting channel and the length direction of the second connecting channel.

5. The highly integrated balanced flow meter according to claim 4, characterized in that, The threaded channel and the outlet of the mounting base are located on adjacent sides of the mounting base, respectively; and the threaded channel is connected to the second connecting channel of the pressure tapping channel.

6. The highly integrated balanced flow meter according to claim 1, characterized in that, The end of the adjusting screw is provided with a hand-held part.

7. The highly integrated balanced flow meter according to claim 1, characterized in that, The mounting base has two or more flange holes suitable for installing the three-valve assembly.

8. The highly integrated balanced flow meter according to claim 7, characterized in that, The three-valve assembly is an I-shaped double-flange three-valve assembly.

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