Quick-release pipe section ultrasonic flowmeter

Abstract

The utility model discloses a quick detach type pipe section ultrasonic flowmeter relates to fluid measurement technical field, the flowmeter includes the measurement pipe section, and its pipe wall is equipped with two pairs of installation interface that constitute X type intersection measurement acoustic channel, ball valve is set up in each installation interface outside, ultrasonic transducer is installed in ball valve outside and valve drive mechanism, valve drive mechanism is through drive assembly and drives rotating shaft, and the linkage mechanism that the rotating rod, connecting rod and the cross bar of taking the sliding slot are formed is controlled four ball valve's valve stem synchronously, realizes the opening in one of both sides two ball valves, and the other is closed, and both sides ball valve state interchanges, thereby completes two groups of measurement acoustic channel working condition's switching, the utility model discloses realized ultrasonic transducer's non -stop quick dismounting maintenance and measurement acoustic channel's on -line redundancy switching, and effectively guaranteed the continuity and reliability of flow measurement.

Description

Technical Field

[0001] This utility model relates to the field of fluid measurement technology, specifically a quick-release pipe section ultrasonic flow meter. Background Technology

[0002] Ultrasonic flow meters, as a non-contact flow measurement instrument, are widely used in industrial measurement due to their advantages such as low pressure loss and wide applicability. Common pipe-section ultrasonic flow meters typically have one or more pairs of mounting holes in the pipe wall, into which ultrasonic transducers are installed at fixed angles and spacings to form the measurement channel. However, this traditional structure has the following significant drawbacks:

[0003] When an ultrasonic transducer malfunctions or requires periodic calibration, the entire piping system must be shut down and depressurized before disassembly and replacement can be carried out; otherwise, pressurized fluid in the pipe will spray out from the mounting hole at the moment of disassembly, which will not only cause production interruption but also bring serious safety hazards.

[0004] Therefore, there is a need in the field for a pipe-type ultrasonic flow meter that can be quickly disassembled and maintained without shutting down the system. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a quick-release pipe section ultrasonic flow meter, which solves the aforementioned problems.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a quick-release pipe section ultrasonic flow meter, comprising:

[0009] The measuring pipe section has two pairs of installation interfaces on its pipe wall. The axis of each pair of installation interfaces forms a measuring channel that runs obliquely through the measuring pipe section, and the axes of the measuring channels of the two pairs of installation interfaces intersect.

[0010] A ball valve is provided on the outside of each of the aforementioned mounting interfaces to control the connection or disconnection between the mounting interface and the external environment;

[0011] An ultrasonic transducer is detachably mounted on the outside of each of the ball valves;

[0012] The valve drive mechanism is located outside the measuring pipe section and is connected to the valve stem of the ball valve to realize the switching of different measuring channel working states.

[0013] A support plate is fixed to the outer wall of the measuring pipe section, and the support plate supports the rotating shaft of the valve drive mechanism through a bearing;

[0014] The frame is fixed to the support plate, and the drive assembly and the ultrasonic flow meter main unit are both housed in the frame.

[0015] Preferably, the valve drive mechanism includes a rotating shaft, a rotating rod, a connecting rod, and a crossbar. The rotating shaft is rotatably mounted on the outer wall of the measuring tube section. The middle part of the rotating rod is fixedly sleeved on the rotating shaft. The two crossbars are respectively hinged to the two ends of the rotating rod through the connecting rod. A sliding groove is provided on the crossbar, and a slidable connecting shaft is provided in the sliding groove. The connecting shaft is fixedly connected to the valve stem of the ball valve on the same side.

[0016] Preferably, the valve drive mechanism is driven by a drive assembly, which includes a drive rod and a linear actuator. The housing of the linear actuator is hinged to a frame fixed to the measuring tube section via a fixed rotating shaft. The output end of the linear actuator is hinged to one end of the drive rod, and the other end of the drive rod is connected to the rotating shaft for transmission.

[0017] Preferably, the valve stems of the two ball valves on the same side are linked by a crossbar. The valve drive mechanism is configured to drive the crossbars on both sides to move, thereby synchronously controlling the four ball valves. This allows one of the two ball valves on the same side to be open and the other to be closed, and the on / off states of the ball valves on both sides to be interchanged, thereby achieving the switching of the working states of the two sets of measurement channels.

[0018] (III) Beneficial Effects

[0019] This invention provides a quick-release ultrasonic flow meter for pipe sections. It has the following advantages:

[0020] 1. By installing a ball valve between the ultrasonic transducer and the installation interface, when the transducer needs to be replaced or repaired, the corresponding ball valve can be closed first to isolate the pipeline pressure. This allows for safe and quick disassembly and assembly of the transducer without affecting the normal flow of fluid in the pipeline, greatly improving the convenience of equipment maintenance and the continuity of the production system.

[0021] 2. By setting up two pairs of transducers to form two independently working measurement channels, and designing a valve drive mechanism to realize the synchronous and reverse switching of four ball valves; when one set of transducers fails or its performance degrades, it can immediately switch online to another set of backup transducers, ensuring the uninterrupted and reliable flow measurement, and greatly improving the online rate and fault tolerance of the equipment.

[0022] 3. The valve drive mechanism of this utility model, through the ingenious linkage design of the rotating shaft, rotating rod, crossbar, and slide groove, can synchronously control the coordinated action of four ball valves with only one linear actuator, realizing the complex logic of "one on and one off on the same side, with the states of both sides interchanged". This mechanism has a compact structure, high transmission efficiency, reliable operation, and is easy to automate through programming. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the internal structure of the pipe section of this utility model;

[0024] Figure 2 This is a schematic diagram of the internal structure of the ball valve of this utility model;

[0025] Figure 3 This is a schematic diagram of the conversion mechanism structure of this utility model;

[0026] Figure 4 This is a schematic diagram of the crossbar structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the drive component structure of this utility model.

[0028] In the diagram: Measuring pipe section-1, Installation interface-2, Measuring sound channel-3, Ball valve-4, Valve ball-41, Through hole-42, Valve stem-43, Ultrasonic transducer-5, Valve drive mechanism-6, Rotating shaft-61, Rotating rod-62, Connecting rod-63, Crossbar-64, Slide groove-65, Connecting shaft-66, Support plate-7, Frame-8, Drive assembly-9, Drive rod-91, Linear actuator-92, Fixed rotating shaft-93, Ultrasonic flow meter main unit-10, Flange-11. Detailed Implementation

[0029] The following is in conjunction with the appendix Figure 1 -Appendix Figure 5 This application will be described in further detail below.

[0030] Reference Figure 1 and Figure 2 The present invention provides a quick-release pipe section ultrasonic flow meter, which mainly includes a measuring pipe section 1, a ball valve 4, an ultrasonic transducer 5, a valve drive mechanism 6, a support plate 7, a frame 8, a drive assembly 9, and an ultrasonic flow meter main unit 10.

[0031] Flanges 11 are provided at both ends of the measuring pipe section 1 for connection with external pipes; two pairs of installation interfaces 2 are machined on the pipe wall of the measuring pipe section 1. In this embodiment, the installation interface 2 is an oblique connector; the axis of each pair of oblique connectors is arranged at a specific angle in space, together forming a measuring channel 3 that obliquely passes through the interior of the measuring pipe section 1; the two measuring channels 3 formed by the two pairs of installation interfaces 2 intersect in space, forming an X-shaped layout. This layout helps to improve the accuracy of measurement and adaptability to fluid velocity distribution.

[0032] A ball valve 4 is fixedly installed at the outer end of each of the mounting interfaces 2; the ball valve 4 includes a valve ball 41, on which a through hole 42 is provided, and the valve ball 41 is fixedly connected to the valve stem 43; by rotating the valve stem 43, the valve ball 41 can be driven to rotate, thereby aligning the through hole 42 on it with the slot in the mounting interface 2 (open state) or offsetting it (closed state), thereby controlling the connection and disconnection between the mounting interface 2 and the external environment;

[0033] An ultrasonic transducer 5 is detachably installed on the outside of each ball valve 4; the ultrasonic transducer 5 serves as a sound wave transmitting and receiving unit and is electrically connected to the ultrasonic flow meter host 10 via a signal cable; when the ball valve 4 is opened, the ultrasonic waves emitted by the transducer 5 can pass through the through hole 42 and propagate along the measuring channel 3.

[0034] Reference Figure 3 and Figure 4 The valve drive mechanism 6 is located outside the measuring pipe section 1. The valve drive mechanism 6 specifically includes a rotating shaft 61, a rotating rod 62, a connecting rod 63, and a crossbar 64. The support plate 7 is fixed to the outer wall of the measuring pipe section 1 by welding or bolt connection. The rotating shaft 61 is rotatably supported on the support plate 7 by bearings or bearing seats. The middle part of the rotating rod 62 is fixedly sleeved on the rotating shaft 61. The two crossbars 64 are respectively hinged to the two ends of the rotating rod 62 by the connecting rod 63. Each crossbar 64 has two sliding grooves 65, which correspond to the valve stems 43 of the two ball valves 41 on the same side. A connecting shaft 66 that can slide along the groove is provided in the groove 65. The crossbar 64 is fixedly connected to the valve stems 43 of the two ball valves 4 on the same side by the connecting shaft 66.

[0035] Reference Figure 5The valve drive mechanism 6 is powered by the drive assembly 9; the drive assembly 9 includes a drive rod 91 and a linear actuator 92; the linear actuator 92 can be a conventional linear drive device such as an electric push rod, hydraulic cylinder or pneumatic cylinder, and its internal structure and control method are existing technologies, which will not be described in detail here; the housing of the linear actuator 92 is hinged to a frame 8 fixed to the measuring pipe section 1 or the support plate 7 through a fixed rotating shaft 93; the output end of the linear actuator 92 is hinged to one end of the drive rod 91, and the other end of the drive rod 91 is connected to the rotating shaft 61 through a transmission connection (e.g., through a key connection);

[0036] The frame 8 is fixed to the support plate 7, and houses the drive assembly 9 and the ultrasonic flow meter host 10 within it, serving both protection and integration purposes.

[0037] The working principle of this utility model is as follows:

[0038] 1. Initial state and measurement: Assume that initially, one of the two ball valves 4 on the left is open and the other is closed, and the two ball valves 4 on the right are in the opposite state, so that one set of measurement channels (e.g., channel A) is connected and working, while the other set of measurement channels (channel B) is closed and in standby; the ultrasonic flow meter main unit 10 performs flow measurement by transmitting and receiving signals through the working pair of ultrasonic transducers 5.

[0039] 2. Switching process: When it is necessary to switch to the backup channel, the ultrasonic flow meter host 10 issues a command to start the drive assembly 9; the push rod of the linear actuator 92 extends or retracts, and pushes or pulls the rotating shaft 61 to rotate through the drive rod 91; the rotating shaft 61 drives the rotating rod 62 fixed on it to swing; the swing of the rotating rod 62 is converted into the opposite or opposite movement of the two crossbars 64 through the two connecting rods 63;

[0040] 3. Taking the inward retraction of the crossbar 64 as an example: The movement of the crossbar 64 converts the horizontal linear motion into a rotational torque on the valve stem 43 through the slide groove 65 and the connecting shaft 66 on it; since the two valve stems 43 on the same side are fixedly connected to the two connecting shafts 66 on the same crossbar 64, the movement of the crossbar 64 will synchronously drive the valve stems 43 of the two ball valves 4 on the same side to rotate; causing one ball valve 4 on the same side to change from open to closed, while the other ball valve 4 changes from closed to open;

[0041] At the same time, through the linkage between the rotating rod 62 and the two horizontal rods 64, the other horizontal rod 64 will make the opposite movement, so that the opening and closing states of the two ball valves 4 controlled by it will also be synchronously reversed.

[0042] 4. Switching complete: Finally, with one action of the valve drive mechanism 6, the on / off states of the four ball valves 4 are switched synchronously; the originally working channel A is closed, and the originally standby channel B is opened, realizing a reliable and rapid switching of the working states of the two sets of measurement channels.

[0043] 5. Online maintenance: When it is necessary to inspect or replace one of the ultrasonic transducers 5, the above switching operation can be used to close the group of sound channels where the transducer is located. Then, the ultrasonic transducer 5 located outside the closed ball valve 4 can be safely disassembled without stopping the fluid in the pipeline, realizing online maintenance without stopping the machine.

[0044] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0045] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A quick-release pipe section ultrasonic flow meter, characterized in that, include: The measuring pipe section (1) has two pairs of installation interfaces (2) on its pipe wall. The axis of each pair of installation interfaces (2) forms a measuring channel (3) that runs obliquely through the measuring pipe section (1), and the axes of the measuring channels (3) of the two pairs of installation interfaces (2) intersect. A ball valve (4) is provided on the outside of each of the mounting interfaces (2) for controlling the connection and disconnection between the mounting interface (2) and the external environment; An ultrasonic transducer (5) is detachably mounted on the outside of each of the ball valves (4); The valve drive mechanism (6) is located outside the measuring pipe section (1) and is connected to the valve stem (43) of the ball valve (4) to realize the switching of different measuring channel working states.

2. The quick-release pipe section ultrasonic flow meter according to claim 1, characterized in that: The valve drive mechanism (6) includes a rotating shaft (61), a rotating rod (62), a connecting rod (63), and a crossbar (64). The rotating shaft (61) is rotatably mounted on the outer wall of the measuring tube section (1). The middle part of the rotating rod (62) is fixedly sleeved on the rotating shaft (61). The two crossbars (64) are respectively hinged to the two ends of the rotating rod (62) through the connecting rod (63). A sliding groove (65) is provided on the crossbar (64). A slidable connecting shaft (66) is provided in the sliding groove (65). The connecting shaft (66) is fixedly connected to the valve stem (43) of the ball valve (4) on the same side.

3. The quick-release ultrasonic flow meter for pipe sections according to claim 1, characterized in that: The valve drive mechanism (6) is driven by a drive assembly (9), which includes a drive rod (91) and a linear actuator (92). The housing of the linear actuator (92) is hinged to a frame (8) fixed to the outer wall of the measuring tube section (1) via a fixed rotating shaft (93). The output end of the linear actuator (92) is hinged to one end of the drive rod (91), and the other end of the drive rod (91) is connected to the rotating shaft (61) for transmission.

4. The quick-release ultrasonic flow meter for pipe sections according to claim 1, characterized in that: The valve stems (43) of the two ball valves (4) on the same side are linked by a crossbar (64). The valve drive mechanism (6) is configured to drive the crossbars (64) on both sides to move, thereby synchronously controlling the four ball valves (4), so that one of the two ball valves (4) on the same side is open and the other is closed, and the on / off states of the ball valves (4) on both sides are interchanged, thereby realizing the switching of the working states of the two sets of measurement channels.

5. The quick-release ultrasonic flow meter for pipe sections according to claim 1, characterized in that: It also includes a support plate (7), which is fixed to the outer wall of the measuring pipe section (1) and is used to support the valve drive mechanism (6).

6. The quick-release pipe section ultrasonic flow meter according to claim 1, characterized in that: It also includes a frame (8), which is fixed on a support plate (7), and the drive assembly (9) and the ultrasonic flow meter host (10) are both housed in the frame (8).

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