Steady flow type ultrasonic flowmeter

Abstract

The utility model discloses a steady flow type ultrasonic flowmeter which comprises a positioning cylinder, an end cover rotator, a displayer, an ultrasonic transmitter and an ultrasonic receiver, the end cover rotator comprises an end cover body and a rotating water supply assembly rotationally installed on the end cover body, and the rotating water supply assembly comprises an annular roller. Two steady flow filter screens are connected to the outer side of the circumferential side wall of the annular roller at intervals, a rotatable steady flow space is defined by the steady flow filter screens and the positioning cylinder, a circular supporting tray is fixedly arranged in the middle of the end cover body, and rotating bearings are arranged on the inner wall of the annular roller and make contact with the outer wall of the supporting tray; and the ultrasonic transmitter and the ultrasonic receiver are symmetrically arranged at the rotating channel leaving positions of the steady flow space. Through the innovation in structure and principle, the measurement performance of the ultrasonic flowmeter under the complex fluid condition is improved, the influence of external factors on the measurement precision is reduced, and the ultrasonic flowmeter has wide application prospects.

Description

Technical Field

[0001] The utility model relates to a flow meter, in particular to a steady-flow ultrasonic flow meter. Background Art

[0002] Accurate flow measurement is crucial in industrial production and process control. Ultrasonic flowmeters are widely used in various fluid measurement scenarios due to their non-contact measurement, easy installation, and wide range of applications. However, existing ultrasonic flowmeters still face technical challenges in practical applications, affecting their measurement accuracy and stability.

[0003] Existing ultrasonic flowmeters are susceptible to fluid pulsation and turbulence during measurement. Fluid flow in pipelines is complex, especially when the flow rate fluctuates significantly or there are obstructions within the pipeline. Fluid pulsation and turbulence can cause instability in the ultrasonic signal transmission path, leading to measurement errors. This vulnerability of ultrasonic flowmeters to fluid pulsation and turbulence is generally due to improper sensor placement. This improper sensor installation causes the ultrasonic signal to propagate in areas of fluid pulsation and turbulence, increasing signal attenuation and scattering, affecting measurement accuracy. Utility Model Content

[0004] In order to solve the deficiencies of the above technologies, the utility model provides a steady-flow ultrasonic flowmeter.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a steady flow ultrasonic flowmeter, comprising:

[0006] A positioning cylinder having a hollow cavity with a side opening and laterally connected to an input pipe and an output pipe;

[0007] The end cover rotator comprises an end cover body and a rotary water supply assembly rotatably mounted on the end cover body. The end cover body is matched and mounted at the lateral opening of the hollow cavity. The rotary water supply assembly comprises an annular drum. Two flow stabilizing screens are spaced apart and connected to the outer side of the circumferential side wall of the annular drum. The flow stabilizing screens and the positioning cylinder form a rotatable flow stabilizing space. A circular support tray is fixedly provided in the middle of the end cover body. At least three rotary bearings are provided on the inner wall of the annular drum. The rotary bearings are all in contact with the outer wall of the support tray.

[0008] A display is connected to the end cover body of the end cover rotator through a sleeve;

[0009] The ultrasonic transmitter and the ultrasonic receiver are arranged on the end cover body and the ultrasonic receiver is arranged on the side wall of the positioning cylinder. The ultrasonic transmitter and the ultrasonic receiver are symmetrically arranged at the positions of the rotation path in the steady flow space.

[0010] Furthermore, the positioning cylinder is transversely connected to the input pipeline through the first flange mounting plate, and the positioning cylinder is transversely connected to the output pipeline through the second flange mounting plate.

[0011] Furthermore, the center of the support tray is connected to the center of the end cover body through a support rod, and the support tray is also located at the center of the annular roller.

[0012] Furthermore, the rotary bearing is mounted on a radially arranged retaining plate on the inner wall of the annular drum, and the rotary bearing is mounted on the middle section of the end of the retaining plate through a fixing pin, so that the rotary bearing is in contact with the outer wall of the support tray.

[0013] Furthermore, four retaining plates are distributed on the inner wall of the annular drum, and the four retaining plates are distributed in a cross pattern on the inner wall of the annular drum.

[0014] The utility model provides a steady-flow ultrasonic flowmeter, which has at least the following advantages:

[0015] 1. Reduce fluid interference: The introduction of the rotating water supply component, especially the stable flow space formed by the rotating annular drum and the flow-stabilizing filter, can effectively reduce the interference of fluid pulsation and turbulence on the ultrasonic signal. This improves measurement accuracy and stability.

[0016] 2. Stable signal transmission path: By symmetrically placing the ultrasonic transmitter and receiver within the stable flow space, the transmission path of the ultrasonic signal remains stable. This prevents interference when the signal propagates in areas of fluid pulsation and turbulence.

[0017] 3. Dynamic Adjustment: The rotating water delivery assembly can dynamically adjust to changes in fluid pressure and flow rate. By rotating the flow-stabilizing filter, it adapts to varying flow pressure conditions and maintains a stable measurement environment. This dynamic adjustment helps adapt to varying working conditions and ensures measurement accuracy.

[0018] 4. Structural Optimization: By optimizing the design of the support tray and rotary bearing, the rotational stability and support strength of the rotary water supply assembly are improved. This structural optimization further enhances measurement stability.

[0019] 5. Simplified structural design: In Example 2, the structural design is further simplified by reducing the number of retaining plates to three and distributing them in an equilateral triangle on the inner wall of the annular drum. This not only reduces manufacturing costs but also improves maintenance convenience.

[0020] 6. Easy to operate and maintain: The display is directly connected to the end cap rotator, providing a clear operation interface and measurement results display, making the equipment easy to operate and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of the utility model.

[0022] Figure 2 This is a structural diagram of Example 1 of the present utility model.

[0023] Figure 3 This is a structural diagram of the second embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the internal three-dimensional structure of Example 1 of the utility model.

[0025] Figure 5 It is a cross-sectional view of the positioning cylinder.

[0026] In the figure: 100, positioning cylinder; 101, hollow cavity; 102, input pipe; 103, output pipe; 104, first flange mounting plate; 105, second flange mounting plate; 200, end cover rotator; 201, end cover body; 202, annular roller; 203, flow stabilizing filter; 204, support tray; 205, rotating bearing; 206, support rod; 207, positioning plate; 300, display; 400, ultrasonic transmitter; 500, ultrasonic receiver. DETAILED DESCRIPTION

[0027] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0028] Embodiment 1;

[0029] like Figure 1 The present invention provides a steady flow ultrasonic flow meter, comprising a positioning cylinder 100, an end cover rotator 200, a display 300, an ultrasonic transmitter 400 and an ultrasonic receiver 500, wherein the positioning cylinder 100 is the main body of the flow meter, as shown in FIG. Figure 5 As shown, positioning tube 100 has a laterally open hollow cavity 101, which guides fluid flow and provides a stable channel for transmitting and receiving ultrasonic signals. Positioning tube 100 is laterally connected to an input pipe 102 via a first flange mounting plate 104. Positioning tube 100 is laterally connected to an output pipe 103 via a second flange mounting plate 105. Input pipe 102 is used to input water, while output pipe 103 is used to output water.

[0030] The end cap rotator 200 includes: Figure 2 and Figure 4The end cover body 201 and the rotary water supply assembly shown are matched and installed at the lateral opening of the positioning cylinder to close the opening. At the same time, the rotary water supply assembly can rotate in the end cover body to play a role in stabilizing the flow. Specifically, the rotary water supply assembly includes an annular roller 202 and a flow stabilizing filter 203. Two flow stabilizing filters 203 are connected to the outer circumferential side wall of the annular roller 202 at intervals to form a flow stabilizing space. This flow stabilization helps to reduce the impact of fluid pulsation and turbulence. The flow stabilizing filter 203 is a mesh body with uniform filter holes. The shape and size of the filter holes are not limited, but the shape and size of the filter holes need to be unified; the support tray 204 is located at the center of the annular roller 202 and is connected to the center of the end cover body 201 through a support rod 206 to provide support for the rotary water supply assembly. The rotating bearing 205 is installed on the retaining plate 207 on the inner wall of the annular roller 202 to support the rotation of the annular roller 202 and ensure that it contacts the outer wall of the support tray 204. In this embodiment, there are four retaining plates 207, which are arranged in a cross direction on the inner wall of the annular roller 202.

[0031] The display 300 is connected to the end cover body 201 of the end cover rotator 200 through a sleeve, and is used to display measurement results and an operation interface.

[0032] The ultrasonic transmitter 400 and the ultrasonic receiver 500 are respectively arranged on the side walls of the end cover body 201 and the positioning cylinder 100, and are used to transmit and receive ultrasonic signals to measure the fluid flow rate. The input signals of the ultrasonic transmitter 400 and the ultrasonic receiver 500 are connected to the processing end of the display 300. The ultrasonic transmitter 400, the ultrasonic receiver 500 and the display 300 are all commercially available products.

[0033] During operation, when fluid flows through the positioning cylinder 100 via the input pipe 102, it enters the flow-stabilizing filter 203, forming a stable flow space and providing a stable measurement environment. The force of the fluid acts on the flow-stabilizing filter 203 of the rotating water supply assembly. The rotating water supply assembly, supported by the rotating bearing 205, can rotate, evenly distributing the fluid and preventing localized excessive flow speeds that affect the propagation and reception of ultrasonic signals. Water is collected in the stable flow space, which helps eliminate fluid pulsation and turbulence. The ultrasonic signal emitted by the ultrasonic transmitter 400 passes through the fluid and is received by the ultrasonic receiver 500. Due to the flow-stabilizing effect of the rotating water supply assembly, the transmission path of the ultrasonic signal remains stable, signal attenuation and scattering are reduced, and measurement accuracy is improved. But it should be noted that the rotation space of the two flow-stabilizing screens 203 is limited by the barrier between the connection input pipe 102 and the output pipe 103 of the positioning tube 100, and it is impossible to rotate periodically in the positioning tube 100. The main purpose of arranging the rotating water supply assembly here is to adapt to different flow pressures and flow rates to realize dynamic movement in the positioning tube 100, because the flow pressure of the fluid may change due to external conditions (such as the start and stop of the pump, pressure fluctuations in the system, etc.). The rotating water supply assembly can be dynamically adjusted according to the change of flow pressure, and adapts to different flow pressure conditions by rotating the flow-stabilizing screen 203 to maintain a stable measurement environment. When the flow velocity of the fluid changes, the rotation of the rotating water supply assembly can help adjust the flow velocity distribution inside the positioning tube 100, avoiding the fluid instability caused by too fast or too slow flow velocity. This dynamic adjustment can ensure that the propagation path of the ultrasonic signal is always in a relatively stable fluid environment.

[0034] In summary, the present invention solves the problems mentioned in the background technology in the following ways:

[0035] 1. Introduction of the rotating water supply component: The rotating annular drum 202 and the flow-stabilizing filter 203 together form a flow-stabilizing space, reducing the influence of fluid pulsation and turbulence on the ultrasonic signal.

[0036] 2. Symmetrical setting of ultrasonic transmitter and receiver: The ultrasonic transmitter and receiver are symmetrically set at the position of the rotation path in the steady flow space to ensure the stability of the transmission path of the ultrasonic signal and avoid the problem of signal propagation in the fluid pulsation and turbulent areas.

[0037] 3. Structural optimization: Through the optimized design of the support tray 204 and the rotary bearing 205, the rotational stability and support strength of the rotary water supply component are improved, and the measurement stability is further enhanced.

[0038] The utility model effectively solves the problem that the existing ultrasonic flowmeter is easily affected by fluid pulsation and turbulence during the measurement process through structural innovation and optimization of the working principle, and improves the accuracy and stability of flow measurement.

[0039] Embodiment 2;

[0040] like Figure 3 As shown, in this embodiment, the center of the support tray 204 is connected to the center of the end cover 201 via a support rod 206, and the support tray 204 is also located at the center of the annular drum 202. A rotary bearing 205 is mounted on a radially disposed retaining plate 207 on the inner wall of the annular drum 202. The rotary bearing 205 is mounted to the middle end of the retaining plate 207 via a fixing pin 208, ensuring that the rotary bearing 205 is in contact with the outer wall of the support tray 204. Unlike the first embodiment, to further simplify the structure, three retaining plates 207 are distributed along the inner wall of the annular drum 202, arranged in an equilateral triangle.

[0041] The steady-flow ultrasonic flowmeter of the present invention has at least the following advantages:

[0042] 1. Reduce fluid interference: The introduction of the rotating water supply component, especially the stable flow space formed by the rotating annular drum and the flow-stabilizing filter, can effectively reduce the interference of fluid pulsation and turbulence on the ultrasonic signal. This improves measurement accuracy and stability.

[0043] 2. Stable signal transmission path: By symmetrically placing the ultrasonic transmitter and receiver within the stable flow space, the transmission path of the ultrasonic signal remains stable. This prevents interference when the signal propagates in areas of fluid pulsation and turbulence.

[0044] 3. Dynamic Adjustment: The rotating water delivery assembly can dynamically adjust to changes in fluid pressure and flow rate. By rotating the flow-stabilizing filter, it adapts to varying flow pressure conditions and maintains a stable measurement environment. This dynamic adjustment helps adapt to varying working conditions and ensures measurement accuracy.

[0045] 4. Structural Optimization: By optimizing the design of the support tray and rotary bearing, the rotational stability and support strength of the rotary water supply assembly are improved. This structural optimization further enhances measurement stability.

[0046] 5. Simplified structural design: In Example 2, the structural design is further simplified by reducing the number of retaining plates to three and distributing them in an equilateral triangle on the inner wall of the annular drum. This not only reduces manufacturing costs but also improves maintenance convenience.

[0047] 6. Easy to operate and maintain: The display is directly connected to the end cap rotator, providing a clear operation interface and measurement results display, making the equipment easy to operate and maintain.

[0048] In general, the utility model improves the measurement performance of the ultrasonic flowmeter under complex fluid conditions through innovations in structure and principle, reduces the influence of external factors on the measurement accuracy, and has broad application prospects.

[0049] The above-mentioned implementation manner is not a limitation of the present invention, and the present invention is not limited to the above-mentioned examples. Any changes, modifications, additions or substitutions made by technicians in this technical field within the scope of the technical solution of the present invention also fall within the scope of protection of the present invention.

Claims

1. A steady flow ultrasonic flowmeter, characterized in that: include: A positioning cylinder (100) having a laterally open hollow cavity (101) and being laterally connected to an input pipe (102) and an output pipe (103); The end cover rotator (200) comprises an end cover body (201) and a rotating water supply assembly rotatably mounted on the end cover body, wherein the end cover body (201) is matched and mounted at the lateral opening of the hollow cavity (101), and the rotating water supply assembly comprises an annular roller (202), two flow stabilizing screens (203) are connected to the outer circumferential side wall of the annular roller (202), and a rotatable flow stabilizing space is formed by the flow stabilizing screens (203) and the positioning cylinder (100), a circular support tray (204) is fixedly arranged in the middle of the end cover body (201), and at least three rotating bearings (205) are provided on the inner wall of the annular roller (202), and the rotating bearings (205) are all in contact with the outer wall of the support tray (204); A display (300) is connected to the end cover body (201) of the end cover rotator (200) via a sleeve; An ultrasonic transmitter (400) and an ultrasonic receiver (500) are provided, wherein the ultrasonic transmitter (400) is provided on the end cover (201), and the ultrasonic receiver (500) is provided on the side wall of the positioning cylinder (100). The ultrasonic transmitter (400) and the ultrasonic receiver (500) are symmetrically provided at positions where the steady flow space rotates and leaves a path.

2. The steady-flow ultrasonic flowmeter according to claim 1, characterized in that: The positioning cylinder (100) is transversely connected to the input pipe (102) via a first flange mounting plate (104), and the positioning cylinder (100) is transversely connected to the output pipe (103) via a second flange mounting plate (105).

3. The steady-flow ultrasonic flowmeter according to claim 1, characterized in that: The center of the support tray (204) is connected to the center of the end cover body (201) through a support rod (206), and the support tray (204) is also located at the center of the annular roller (202).

4. The steady-flow ultrasonic flowmeter according to claim 1, characterized in that: The rotary bearing (205) is mounted on a radially arranged retaining plate (207) on the inner wall of the annular roller (202). The rotary bearing (205) is mounted on the middle section of the end of the retaining plate (207) via a fixing pin (208), so that the rotary bearing (205) is in contact with the outer wall of the support tray (204).

5. The steady-flow ultrasonic flowmeter according to claim 1, characterized in that: Four retaining plates (207) are distributed on the inner wall of the annular roller (202), and the four retaining plates (207) are distributed in a cross orientation on the inner wall of the annular roller (202).

Images