Ultrasonic flowmeter

Abstract

The utility model relates to the technical field of flow meters, and discloses an ultrasonic flow meter which comprises a water pipe, an outer shell, a transmitting unit, a reflecting structure, a battery bin, a metering circuit board and the like. The reflection part in the reflection structure is obliquely arranged and deviates from the bottommost position of the reflection structure, so that a reflection path of sound waves avoids a space where impurities are possibly accumulated at the bottom, the measurement influence of impurity accumulation on a product is eliminated, and the precision and the service life of the product are ensured. Meanwhile, impurities such as rust and silt mixed in water can be prevented from being accumulated on a reflection path through the special design of the reflection structure. The problems that some ultrasonic flow meters are limited by external factors in the using process, impurities are prone to being accumulated in the products, transmission signals of the products are changed, measurement of the products is unstable, and precision is reduced are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to flowmeter technical field, concretely relates to an ultrasonic flowmeter. BACKGROUND

[0002] The ultrasonic flowmeter is a kind of equipment for non-contact flow measurement using ultrasonic technology, and the ultrasonic flowmeter is widely applied in industrial control field due to its non-contact measurement, high precision and strong reliability.The components of the ultrasonic flowmeter include ultrasonic sensor, water pipeline, sound wave reflection device, metering circuit board with display screen, battery, protective shell and complex sealing mode such as sealing ring and pouring sealant.

[0003] In the traditional ultrasonic flowmeter, the ultrasonic sensor is installed in the water pipeline by assembling, directly contacts with water and is fixed by metal plate, and waterproof ring is used for sealing, so that the overall structure is relatively complex;Moreover, under the horizontal installation of product, the sound wave transmission path of ultrasonic sensor is reflected to the second sensor by sound wave reflection device, the plane where the path is located is perpendicular to the product plane, due to the impurities in water, the impurities will gather on the ultrasonic reflection device due to the influence of gravity and the structure interference of reflection device for a long time, so that the sound wave reflection surface becomes smaller and smaller, and the signal that the circuit board can obtain becomes worse, which seriously affects the measurement precision.

[0004] The utility model discloses a kind of ultrasonic flowmeters, including:

[0005] The technical problem solved by the utility model is that the existing ultrasonic flowmeter is limited by external factors during use, impurities are easily accumulated in the product, which causes the transmission signal of the product to change, resulting in unstable measurement of the product and decreased precision.

[0006] The purpose of the utility model can be realized by the following technical solutions:

[0007] An ultrasonic flowmeter, comprising:

[0008] Water pipeline, the flow channel is arranged in the water pipeline;

[0009] Outer shell, the outer shell is fixedly connected with the water pipeline;

[0010] Two emitting units, the emitting unit is located in the outer shell and is fixedly arranged on the water pipeline;

[0011] Reflection structure, the reflection structure is arranged in the flow channel, a passage is formed in the reflection structure, two reflection parts are arranged in the passage, the reflection part is arranged away from the lowest end of the reflection structure, and a reflection surface is arranged on the reflection part;

[0012] One of the emitting units emits a sound wave, the sound wave is reflected to the second reflecting part via the first reflecting part, and then is conducted to the other emitting unit after being reflected via the second reflecting part, the sound wave path forms an included angle with the vertical plane, and the included angle is greater than 0° and less than 90°.

[0013] In one scheme of the utility model, the both ends of the water pipe are respectively provided with connecting parts, and external threads are arranged on the connecting parts.

[0014] In one scheme of the utility model, a battery compartment is arranged in the shell body, and a plurality of mounting positions are formed in the battery compartment.

[0015] In one scheme of the utility model, a metering circuit board is arranged in the shell body, and the metering circuit board is fixedly arranged at the opening end of the battery compartment.

[0016] In one scheme of the utility model, the opening end of the shell body is fixedly connected with a protective shell, and the protective shell is made of transparent material.

[0017] In one scheme of the utility model, the protective shell and the shell body are fixedly connected through friction welding.

[0018] In one scheme of the utility model, one end of the protective shell, away from the shell body, is provided with a protective cover, one end of the protective cover is rotatably connected with the protective shell, and the other end of the protective cover is detachably connected with the protective shell.

[0019] In one scheme of the utility model, the outer contour of the reflecting structure is a cylindrical structure, and the channel between the two reflecting parts is a square structure.

[0020] In one scheme of the utility model, a through hole is formed in the side wall of the reflecting structure corresponding to the emitting unit.

[0021] In one scheme of the utility model, the two ends of the reflecting structure are locked through the fixing ring arranged in the water pipe.

[0022] The utility model discloses the beneficial effects of:

[0023] The reflecting part in the reflecting structure is obliquely arranged and deviates from the bottom position of the reflecting structure, so that the reflection path of the sound wave avoids the space where impurities may accumulate at the bottom, eliminates the influence of impurity accumulation on the product, and guarantees the precision and service life of the product.

[0024] The additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter in the description of embodiments of the present application, which will be described with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description of embodiments, given by way of example, and with reference to the following drawings, in which:

[0026] Figure 1 is a structure schematic diagram of the present application in perspective;

[0027] Figure 2 is a structure schematic diagram of the present application in side view;

[0028] Figure 3 is a structure schematic diagram of the present application in perspective; Figure 2

[0029] Figure 4 is a structure schematic diagram of the present application in front view;

[0030] Figure 5 is a structure schematic diagram of the present application in perspective; Figure 4

[0031] Figure 6 is a structure schematic diagram of the present application in perspective;

[0032] Figure 7 is a structure schematic diagram of the present application in perspective;

[0033] Figure 8 is a structure schematic diagram of the present application in perspective;

[0034] Figure 9 is a structure schematic diagram of the present application in perspective;

[0035] Figure 10 is a structure schematic diagram of the present application in front view;

[0036] Figure 11 is a structure schematic diagram of the present application in perspective; Figure 10

[0037] The reference signs in the drawings are as follows: 1, water pipe; 2, outer shell; 3, emitting unit; 4, reflecting structure; 5, reflecting part; 6, battery compartment; 7, metering circuit board; 8, protective shell; 9, protective cover; 10, fixing ring. DETAILED DESCRIPTION

[0038] ​​​Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only a part of the embodiments of the utility model, and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0039] In the description of the utility model, it is understood that the orientation description, such as the orientation or position relation indicated by up, down, front, back, left, right, etc. based on the orientation or position relation shown in the drawing, is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0040] In the description of the utility model, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, and above, below, etc. are understood as including the number. If the first and second are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0041] Please refer to Figures 1-11 The utility model discloses an ultrasonic flowmeter, including water pipe 1, outer shell 2, transmitting unit 3, reflection structure 4, battery compartment 6 and metering circuit board 7 etc. Among them, water pipe 1 is provided with flow passage for fluid communication, the both ends of water pipe 1 can be provided with connecting portion respectively, the outer thread is set up on the connecting portion to be used for installing connection. The outer shell 2 is fixedly connected with water pipe 1, the outer shell 2 can be set up on the outside of water pipe 1 and is integrally arranged with water pipe 1. The outer shell 2 can be cylindrical structure, the inner wall of outer shell 2 can be provided with several rib strips for improving strength.

[0042] Please refer to Figures 1-11 In one embodiment of the utility model, the transmitting unit 3 includes at least two, the transmitting unit 3 is located in the outer shell 2 and is fixedly arranged on the outer wall of water pipe 1, the transmitting unit 3 can be integrally fixedly arranged with water pipe 1, and the transmitting unit 3 is used for emitting sound wave to the flow passage. By directly integrating the sound wave transmitting unit 3 on the water pipe, the process of installing ultrasonic components is saved, and other installation requirements of sealing can be met. At the same time, the measurement influence of impurity accumulation on the product is avoided, and the precision and service life of the product are guaranteed. The inner wall of water pipe 1 can be provided with a notch corresponding to the position of transmitting unit 3 to ensure the sound wave emission effect.

[0043] Please refer to Figures 1-11 , in one embodiment of the utility model, the reflection structure 4 is arranged in the flow channel, the external contour of the reflection structure 4 can be cylindrical structure or cylindrical structure, the reflection structure 4 can be movably arranged in the flow channel, and the two ends can be locked by the fixing ring 10 arranged in the water pipe 1. The inside of the reflection structure 4 is provided with a passage, two reflection parts 5 are arranged in the passage, and the reflection part 5 includes a reflecting surface; the reflection part 5 is arranged away from the lowest end of the reflection structure 4, that is, the reflection part 5 is arranged below the side of the internal space of the reflection structure 4, so that the reflection path of the sound wave avoids the space where impurities may accumulate at the bottom, eliminates the measuring influence of impurity accumulation on the product, and guarantees the precision and service life of the product. The passage between the two reflection parts 5 is in square structure to better carry out flow measurement. The square profile is arranged obliquely so that one corner is located at the lowermost end, and the obliquely arranged reflection part 5 corresponds to one edge of the obliquely arranged square profile (as Figure 11 ). In this way, the reflection path of the sound wave can avoid the space where impurities may accumulate at the bottom to the greatest extent. The side wall of the reflection structure 4 corresponding to the emission unit 3 can be provided with a through hole for guaranteeing the transmission effect of the sound wave. At the same time, the inner diameter of the square profile part can be slightly reduced, so that the bottom wall of the square profile part is slightly higher than the bottom wall of the circular part at the two ends (the outer side of the reflection part 5) of the reflection structure 4, thereby avoiding that impurities such as rust and silt mixed in water are accumulated on the reflection path.

[0044] Please refer to Figures 1-11 , in one embodiment of the utility model, the shell 2 is provided with a battery compartment 6, and a plurality of mounting positions are formed in the battery compartment 6. The mounting position can be enclosed by a plate-shaped structure to form an arc-shaped plate with a notch, so as to form a mounting position for mounting a battery in the arc-shaped plate. The shell 2 is also provided with a metering circuit board 7, and the metering circuit board 7 is fixedly arranged at the opening end of the battery compartment 6. The metering circuit board 7 is connected with the battery through a circuit, and at the same time, the circuit board is connected with the two emission units 3 through signal lines respectively. The metering circuit board 7 can be fixedly connected with the battery compartment 6. The battery and the metering circuit board 7 are integrally mounted on the battery compartment 6, and then are integrally fixed in the shell 2. The overall product assembly process and sealing assembly mode are simplified, the number of components is saved, and the process complexity is reduced.

[0045] Please refer to Figures 1-11In one of the embodiments of the utility model, the opening end of the shell body 2 can be fixedly connected with a protective shell 8, and the protective shell 8 is of transparent material. Specifically, the protective shell 8 can be entirely of transparent material, or can be provided with transparent material at the position corresponding to the display area of the metering circuit board 7, so that the data displayed by the circuit board can be directly observed through the protective shell 8 of transparent material. The protective shell 8 can be fixedly connected with the shell body 2 through friction welding. The mounting parts of the screw process and the rubber ring are omitted. The end of the protective shell 8 away from the shell body 2 is provided with a protective cover 9, one end of the protective cover 9 is rotatably connected with the protective shell 8, and the other end is detachably and fixedly connected with the protective shell 8. The detachable and fixed connection can be a buckle type connection or other connection mode.

[0046] The working principle of the utility model is as follows:

[0047] In use, after one of the emitting units 3 emits a sound wave, the sound wave is reflected to the second reflecting part 5 through the first reflecting part 5, and then is conducted to the other emitting unit 3 after being reflected by the second reflecting part 5. The sound wave path forms an included angle with the overall plane (horizontal plane or vertical plane) of the pipeline, and the included angle is greater than 0° and less than 90°. Through the specific position structure of the reflecting part 5 in the reflecting structure 4, the plane where the sound wave path is located is inclined to deviate from the vertical plane, so that the influence of impurity accumulation on the product is eliminated, and the precision and service life of the product are ensured. At the same time, the shell body 2 and the water pipeline 1 are integrated in the application, the emitting unit 3 is integrated in the shell body 2, and the circuit board, the battery compartment 6 and the like are integrally arranged, so that the assembly components and the assembly process of the product are simplified. The problems of the prior art, such as complex structure, long process flow and many structural components of the ultrasonic flowmeter in the production process, complex installation mode of the battery and the circuit board in the product assembly process, usually locking on two components, and using sealing glue to fix and waterproof, the protective shell is usually sealed by a sealing ring and a screw, the assembly efficiency is low, and the modular assembly cannot be formed.

[0048] The above embodiment of the utility model is described in detail, but the content described can only be the preferred embodiment of the utility model, and cannot be considered as limiting the implementation range of the utility model. Any equivalent change and improvement within the scope of the utility model application should still belong to the scope of the claims of the utility model.

Claims

1. An ultrasonic flow meter, characterized in that, include: Water pipe (1), wherein a flow channel is provided inside the water pipe (1); The outer casing (2) is fixedly connected to the water pipe (1); Two transmitting units (3) are located inside the outer casing (2) and fixedly mounted on the water pipe (1); A reflective structure (4) is disposed in the flow channel, and a channel is provided therein. Two reflective parts (5) are disposed in the channel. The reflective parts (5) are disposed off the lowest end of the reflective structure (4). The reflective parts (5) include a reflective surface. After one of the transmitting units (3) emits a sound wave, the sound wave is reflected by the first reflector (5) to the second reflector (5), and then reflected by the second reflector (5) and transmitted to another transmitting unit (3). The sound wave path forms an angle with the vertical plane, and the angle is greater than 0° and less than 90°.

2. An ultrasonic flow meter according to claim 1, characterized in that, The water pipe (1) is provided with connecting parts at both ends, and the connecting parts are provided with external threads.

3. An ultrasonic flow meter according to claim 1, characterized in that, The outer casing (2) is provided with a battery compartment (6), and the battery compartment (6) has several mounting positions.

4. An ultrasonic flow meter according to claim 3, characterized in that, A metering circuit board (7) is provided inside the outer casing (2), and the metering circuit board (7) is fixedly installed at the opening end of the battery compartment (6).

5. An ultrasonic flow meter according to claim 4, characterized in that, The outer shell (2) has a protective shell (8) fixedly connected to its open end. The protective shell (8) is made of transparent material.

6. An ultrasonic flow meter according to claim 5, characterized in that, The protective shell (8) and the outer shell (2) are fixedly connected by friction welding.

7. An ultrasonic flow meter according to claim 6, characterized in that, The protective shell (8) has a protective cover (9) at one end away from the outer shell (2). One end of the protective cover (9) is rotatably connected to the protective shell (8), and the other end is detachably connected to the protective shell (8).

8. An ultrasonic flow meter according to claim 7, characterized in that, The outer contour of the reflective structure (4) is cylindrical, and the channel between the two reflective parts (5) is square.

9. An ultrasonic flow meter according to claim 8, characterized in that, The reflective structure (4) has a through hole on one side wall corresponding to the transmitting unit (3).

10. An ultrasonic flow meter according to claim 9, characterized in that, The two ends of the reflective structure (4) are locked by a fixing ring (10) set inside the water pipe (1).

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