Low-cost ultrasonic flow base meter

Abstract

The utility model relates to a low-cost ultrasonic flow base meter, which belongs to the field of flow detection, and comprises a transduction circuit board outer shell and a flow measuring pipeline detachably mounted on the transduction circuit board outer shell, and a circuit board is mounted in the transduction circuit board outer shell. A counter blind hole is formed in each of the two sides of the bottom end in the transduction circuit board outer shell, a transduction device electrically connected with the circuit board is mounted in each counter blind hole, two mounting convex holes are formed in the flow measurement pipeline, and the bottoms of the counter blind holes can be adaptively inserted into the mounting convex holes; according to the utility model, the shells of the two existing transducers and the protective shell of the circuit board are combined and replaced by one component through the arranged transduction circuit board shell, so that the number of components is reduced, the general subsequent glue filling sealing is adopted, the product performance is ensured, the process is simplified, and the cost is reduced.

Description

Technical field:

[0001] The utility model relates to the field of flow detection, in particular to a low-cost ultrasonic flow basic meter. Background technology:

[0002] The ultrasonic flow meter is mainly used for flow testing. It uses the ultrasonic time difference method for calculation, and uses the time difference of ultrasonic transmission to calculate the flow rate and new calculations through the circuit board algorithm.

[0003] Currently, the market mainly uses two pairs of separate ultrasonic transducers to assemble on the pipe, use a silicone ring for sealing, place a pressure plate above the transducer to fix the transducer to ensure sealing performance, and then connect the signal line of the transducer to the circuit board. The circuit board then outputs a digital signal to the display terminal. This assembly method is complex, the transducer must pass through the pressure plate separately, and the circuit board behind must be surrounded by a separate shell, there are many parts, and the cost is high. In order to simplify the assembly process and reduce costs, and improve sealing performance, the utility model proposes a low-cost ultrasonic flow meter to solve the deficiencies and shortcomings of the prior art. Utility model content:

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a low-cost ultrasonic flow meter.

[0005] The technical solution adopted by the utility model is:

[0006] A low-cost ultrasonic flow meter comprises a transducer circuit board housing and a flow measurement pipeline detachably mounted on the transducer circuit board housing, wherein a circuit board is mounted in the transducer circuit board housing, a countersunk blind hole is provided on both sides of the bottom end of the transducer circuit board housing, a transducer device electrically connected to the circuit board is installed in the countersunk blind hole, two mounting convex holes are provided on the flow measurement pipeline, and the bottom of the countersunk blind hole can be adapted to be inserted into the mounting convex holes.

[0007] Preferably, a supporting surface is provided in the middle of the inner wall of the mounting convex hole, and the bottom of the countersunk blind hole abuts against the supporting surface.

[0008] Preferably, a sealing ring is further provided on the support surface, and the bottom of the countersunk blind hole abuts against the support surface.

[0009] Preferably, a snap-in groove is formed at the edge of the countersunk blind hole at the bottom of the transducer circuit board outer shell for the top of the mounting protruding hole to be snapped into, a mounting through hole extending to the inside of the transducer circuit board outer shell is formed at the bottom of the snap-in groove, a threaded hole adapted to the mounting through hole is formed at the outer edge of the top of the mounting protruding hole, and the transducer circuit board outer shell is connected to the flow measurement pipeline by fixing screws.

[0010] The beneficial effect of the utility model is that the utility model combines the existing two transducer shells and the protective shell of the circuit board through the transducer circuit board shell body, replaces them with one component, reduces the number of components, and uses universal subsequent glue filling and sealing to ensure product performance while simplifying the process and reducing costs. Description of the drawings:

[0011] Figure 1 : A three-dimensional exploded view structural schematic diagram of the utility model.

[0012] Figure 2 : The structural schematic diagram of the utility model.

[0013] Figure 3 : A schematic structural diagram of a flow measurement pipeline of the utility model.

[0014] Figure 4 : A schematic structural diagram of the outer shell of the energy conversion circuit board of the utility model.

[0015] Figure 5 : The utility model Figure 4 Schematic diagram of the structure from another perspective.

[0016] Figure 6 : A partial cross-sectional view of the outer shell of the energy conversion circuit board of the utility model.

[0017] In the figure: 001, transducer circuit board housing, 101, mounting through hole, 002, flow measurement pipeline, 003, circuit board, 004, countersunk blind hole, 401, snap-in groove, 005, transducer device, 006, mounting convex hole, 601, supporting surface, 602, threaded hole, 007, sealing ring, 008, fixing screw. Specific implementation method:

[0018] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged, or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0019] like Figure 1-6As shown, a low-cost ultrasonic flow meter comprises a transducer circuit board housing 001 and a flow measurement pipe 002 detachably mounted on the transducer circuit board housing 001, a circuit board 003 is mounted in the transducer circuit board housing 001, a countersunk blind hole 004 is provided on both sides of the bottom end of the transducer circuit board housing 001, a transducer device 005 electrically connected to the circuit board 003 is mounted in the countersunk blind hole 004, two mounting convex holes 006 are provided on the flow measurement pipe 002, the bottom of the countersunk blind hole 004 can be adapted to be inserted into the mounting convex hole 006, the circuit board 003 can be directly locked in the transducer circuit board housing 001, the analog signal output line of the transducer device 005 is directly welded on the circuit board 003, and the signal line on the circuit board 003 directly outputs a digital signal, so that the structure is simple and the process is simplified.

[0020] The further optimization settings of this scheme are: Figure 1-6 As shown, a support surface 601 is provided in the middle of the inner wall of the mounting protruding hole 006 , and the bottom of the countersunk blind hole 004 abuts against the support surface 601 .

[0021] The further optimization settings of this scheme are: Figure 1-6 As shown, a sealing ring 007 is also provided on the support surface 601 , and the bottom of the countersunk blind hole 004 abuts against the support surface 601 . The provision of the sealing ring 007 can maximize the sealing performance after the transducer circuit board housing 001 and the flow measurement pipeline 002 are connected.

[0022] The further optimization settings of this scheme are: Figure 1-6 As shown, the edge of the countersunk blind hole 004 at the bottom of the transducer circuit board housing 001 is provided with a snap-in groove 401 for the top of the mounting convex hole 006 to snap in, the bottom of the snap-in groove 401 is provided with a mounting through hole 101 extending to the inside of the transducer circuit board housing 001, and the top outer edge of the mounting convex hole 006 is provided with a threaded hole 602 adapted to the mounting through hole 101, and the transducer circuit board housing 001 is connected to the flow measurement pipeline 002 by fixing screws 008.

[0023] The transducer circuit board housing 001 is made of polymer plastic material. The transducer circuit board housing 001 is provided with two or more screw holes for assembling the transducer circuit board housing 001 and the flow measurement pipe 002. At the same time, the transducer circuit board housing 001 can be inlaid with a metal plate for injection molding to enhance the bending resistance of the housing and improve the sealing performance of the flow measurement pipe 002. The transducer circuit board housing 001 is provided with two blind holes 004 structures, which are used to attach transducer devices 005 as ultrasonic emission sources.

[0024] In the figure, the description of the positional relationship is only for illustrative purposes and cannot be understood as a limitation of this patent; obviously, the above embodiments of the utility model are only examples for clearly illustrating the utility model, and are not limitations on the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A low-cost ultrasonic flow meter, characterized by: The invention comprises a transducer circuit board outer shell (001) and a flow measurement pipeline (002) detachably mounted on the transducer circuit board outer shell (001); a circuit board (003) is mounted in the transducer circuit board outer shell (001); a sunken blind hole (004) is provided on both sides of the bottom end of the transducer circuit board outer shell (001); a transducer device (005) electrically connected to the circuit board (003) is mounted in the sunken blind hole (004); two mounting convex holes (006) are provided on the flow measurement pipeline (002); and the bottom of the sunken blind hole (004) can be adapted to be inserted into the mounting convex holes (006).

2. The low-cost ultrasonic flow meter according to claim 1 is characterized in that: A supporting surface (601) is provided in the middle of the inner wall of the mounting convex hole (006), and the bottom of the countersunk blind hole (004) abuts against the supporting surface (601).

3. The low-cost ultrasonic flow meter according to claim 2 is characterized in that: A sealing ring (007) is also provided on the support surface (601), and the bottom of the countersunk blind hole (004) abuts against the support surface (601).

4. The low-cost ultrasonic flow meter according to claim 1 is characterized in that: The edge of the countersunk blind hole (004) at the bottom of the transducer circuit board housing (001) is provided with a snap-in groove (401) for the top of the mounting protruding hole (006) to snap in, the bottom of the snap-in groove (401) is provided with a mounting through hole (101) extending into the interior of the transducer circuit board housing (001), the top outer edge of the mounting protruding hole (006) is provided with a threaded hole (602) adapted to the mounting through hole (101), and the transducer circuit board housing (001) is connected to the flow measurement pipeline (002) via a fixing screw (008).

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