TWM592957U - Ultrasonic flow meter - Google Patents

Abstract

The present invention mainly discloses an ultrasonic flowmeter; wherein, the ultrasonic flowmeter is applied to a pipeline with a fluid, and includes: a main control module, a rail module, and two ultrasonic sensors. The two ultrasonic sensors are electrically connected to the main control module and arranged beside the pipeline. In the present invention, the two ultrasonic sensors obtain a first propagation time and a second propagation time of ultrasonic waves in the pipeline by transmitting and receiving ultrasonic waves, and transmit a plurality of propagation time signals to the main control module . Furthermore, the main control module passes the plurality of propagation time signals through a flow rate calculation formula to obtain the flow rate and flow rate of the fluid in the pipeline.

Description

Ultrasonic flowmeter

The present invention relates to the technical field of fluid flow and velocity measurement, in particular to a non-contact ultrasonic flowmeter.

In all kinds of industrial manufacturing fields, in order to clearly monitor the operation status and efficiency of the machine, it is necessary to immediately grasp the various operation information and status of the machine and the pipeline. For example, in a pipeline equipped with fluid, its distance, fluid flow rate, fluid flow rate, and liquid level are all important parameters for improving production efficiency and operation monitoring.

Taking the monitoring of fluid velocity and flow rate as an example, the 流量 meter mainly uses 來 to measure 流量 of the liquid in the pipeline. It has been widely used in the fields of water company, petroleum, chemical industry, electricity, and environmental measurement. Please refer to FIG. 1, which is a perspective view showing a conventional fixed ultrasonic flowmeter. As shown in FIG. 1, a conventional fixed ultrasonic flowmeter 1'is installed on the outer surface of a pipe 2'. The fixed ultrasonic flowmeter 1'applies an acoustic paste 4'to the two ultrasonic waves The sensor 11' acts as a conductive medium between the outer surface of the pipe 2', and then the two ultrasonic sensors 11' are fixed to the pipe 2'through an adhesive 3'or a fixing tape. Although, the above-mentioned fixed-type ultrasonic flowmeter 1'has the advantage of measuring its flow rate and flow rate without contacting the fluid in the pipe 2'. However, the fixed ultrasonic flowmeter 1'still has the following deficiencies:

(1) The above-mentioned fixed ultrasonic flowmeter 1'fixes the two sensors to the pipe 2'through the adhesive 3'or a fixing tape. It is conceivable that if used for a long time, the two ultrasonic sensors 11' will easily fall off or move, affecting the accuracy of the data of the fixed ultrasonic flowmeter 1'. At the same time, since the second ultrasonic sensor 11' is adhered to the pipeline 2'through the adhesive 3', the type and composition of the adhesive 3'must be selected to be suitable for the material and paint of the pipeline 2' Material, which reduces the convenience of the fixed ultrasonic flowmeter 1'.

It can be known from the above that the design of the conventional fixed ultrasonic flowmeter 1'still has many defects, which makes it inadequate. In view of this, the creator of this new model tried to research and create, and finally developed and completed a new type of ultrasonic flowmeter.

The new ultrasonic flowmeter mainly includes: a main control module, a guide rail module, and two ultrasonic sensors. The two ultrasonic sensors are electrically connected to the main control module and arranged beside the pipeline. In the present invention, the two ultrasonic sensors receive and transmit ultrasonic waves to obtain a first propagation time and a second propagation time of the ultrasonic waves in the pipeline, and transmit a plurality of propagation time signals to the main control module . Furthermore, the main control module passes the plurality of propagation time signals through a flow rate calculation formula to obtain the fluid flow rate and the fluid flow rate in the pipeline.

In order to achieve the above-mentioned main purpose of the new model, the author of this case provides an embodiment of the ultrasonic flowmeter, which is applied to a pipeline with a fluid, and includes: One main control module; A rail module, the pipe is threaded through the rail module; and Two ultrasonic sensors are electrically connected to the main control module, and are set and slide in the guide rail module; Wherein, the two ultrasonic sensors are arranged beside the pipeline, and the two ultrasonic sensors obtain a first propagation time and a second propagation time of the ultrasonic wave in the pipeline by sending and receiving ultrasonic waves, and will transmit a plurality of The time signal is transmitted to the main control module; Wherein, the main control module passes the plurality of propagation time signals through a flow rate calculation formula to obtain the flow rate of the fluid in the pipeline.

In order to be able to more clearly describe the ultrasonic flowmeter proposed by the present invention, the following will explain the preferred embodiment of the present invention in detail in conjunction with the drawings.

Please refer to FIG. 2, which is a first perspective view of an ultrasonic flowmeter of the present invention. Please also refer to Fig. 3, which shows a second perspective view of the ultrasonic wave flowmeter of the present invention. As shown in FIG. 3, the ultrasonic flowmeter 1 of the present invention includes a main control module C, a rail module 11, and two ultrasonic sensors 12. Wherein, the pipe 2 is passed through the guide rail module 11. The pipe 2 is in the form of a hollow tube to allow a fluid to flow through it. Moreover, the two ultrasonic sensors 12 are electrically connected to the main control module C, and are arranged and slide in the guide rail module 11. In this way, the two ultrasonic sensors 12 are disposed beside the pipe 2. Then, the two ultrasonic sensors 12 send and receive ultrasonic waves to each other to obtain a first propagation time and a second propagation time of the ultrasonic waves in the fluid, and then transmit a plurality of propagation time signals to the main Control module C. Furthermore, the main control module C passes the plurality of propagation time signals through a flow rate calculation formula to obtain the flow rate of the fluid in the pipeline.

……………………….(1)

……………………….(2) 表(1)

Continue to refer to Figures 2 and 3. Please also refer to Figure 4 for a schematic diagram showing the ultrasonic sensor and the pipeline. As shown in FIG. 4, the propagation time of the ultrasonic wave traveling in the first direction in the fluid is the first propagation time, and the propagation time of the ultrasonic wave traveling in the fluid in the second direction is the first propagation time 2. Spread time. Among them, the ultrasonic flowmeter 1 of the present invention uses the flow velocity of the fluid to make the transmission speed of the ultrasonic waves emitted by the two ultrasonic sensors 12 ′ through the fluid unequal and there is a time difference. And, the flow velocity of the fluid can be calculated according to the time difference, and then the flow rate value can be obtained. To explain in more detail, the above flow rate calculation formula is the number of propagation M in the fluid multiplied by the diameter D of an inner tube of the pipeline divided by the sine value (sin2θ) of twice the ultrasonic incident angle θ, and then the secondary value Multiply the difference between the second propagation time and the first propagation time and divide by the quotient of the first propagation time and the second propagation time to obtain the flow rate of the fluid. As well known to engineers in the related field of fluid mechanics, the flow rate of the fluid in the pipe 2 is equal to the inner cross-sectional area of the pipe 2 times the flow velocity of the fluid, so the flow rate of the above fluid is multiplied by πr ² , r is the pipe Inner radius. In other words, the flow rate calculation formula is represented by the following formulas (1) and (2), and the definitions of algebra or variables in the two formulas are collated in the following table (1).

……………………….(1)

………………………. (2) Table (1)

Refer again to Figures 2 and 3. It is worth noting that the ultrasonic flowmeter 1 must be accurately installed at the relative position of the outer wall of the pipe 2 to reduce the error of the ultrasonic sensor 12 receiving the ultrasonic wave. Therefore, the rail module 11 of the present invention includes: two rail plates 111 and two clamping units 112. As shown in FIG. 2, the two guide rail plates 111 are respectively disposed on the upper and lower sides of the pipe 2 to form a sliding space. Moreover, the two clamping units 112 are disposed between the two rail plates 111 and slide in the sliding space. In this way, the two ultrasonic sensors 12 are respectively fixed in the corresponding clamping units 112 of the two clamping units 112. In this way, by providing the two ultrasonic sensors 12 can be stably installed on the outer wall surface of the pipe 2 to improve the measurement accuracy of the ultrasonic flowmeter 1 of the present invention. On the other hand, the ultrasonic flowmeter 1 further includes a housing 13 accommodating the guide rail module 11 and the two ultrasonic sensors 12; wherein, the pipe 2 is passed through the housing 13; in other words In other words, the housing 13 accommodates part of the duct 2. On the other hand, the two ultrasonic sensors 12 can be located on both sides of the pipe 2 respectively; it is worth noting that the two ultrasonic sensors 12 can also be located on the same side of the pipe 2 according to actual usage conditions and between each other With a distance. It can be known from the above that the user can measure and grasp the flow rate and velocity of the fluid in the pipeline 2 through the new-type ultrasonic flowmeter 1 in a non-contact manner, so as to further monitor the production efficiency and operation status of the related machines . In this way, the new ultrasonic flowmeter can not only be widely applicable to various fluid media and environmental conditions, for example: high temperature, high pressure, non-conductive, strong corrosive, explosive and radioactive and other special media flow measurement, At the same time, it does not affect the flow of fluid in the pipe 2. It is worth mentioning that the new ultrasonic flowmeter 1 is simple to install and does not need to damage the integrity of the pipeline 2.

Continue to refer to Figure 2 and Figure 3. Please also refer to Figure 5, which shows a block diagram of the main control module and the ultrasonic sensor. As shown in FIG. 5, the main control module C further includes: a control unit 1C, an arithmetic unit 2C, a display unit 3C, and a button group 4C. The operation unit 2C, a display unit 3C, and a button group 4C are electrically connected to the control unit 1C. In this way, the button group 4C transmits a corresponding signal to the control unit 1C according to a button pressed by an external force. For example, the user controls the operation and measurement of the ultrasonic flowmeter 1 by pressing the button group 4C. The control unit 1C transmits corresponding signals to the display unit 3C, the arithmetic unit 2C, and the two ultrasonic sensors 12 according to the button group 4C pressed by the user. In this way, the user displays the signal on the display unit 3C through the control unit 1C, and clearly understands the flow velocity and flow rate of the fluid in the pipe 2. As a matter of course, the user can also input data such as the inner diameter of the pipe 2 by pressing the button group 4C, and set the warning value and warning method of the flow rate. It is added that the button group 4C is a plurality of physical buttons or a plurality of virtual buttons displayed on the display unit 3C. On the other hand, each of the two guide rail plates 111 includes: two locking plates 113 formed by bending the two ends of the guide rail 111 respectively, and each locking plate 113 is formed on There are a plurality of locking holes 114 arranged in parallel intervals; in this way, when the two clamping units 112 slide between the two guide rail plates 111, they are locked by one of the plurality of locking holes 114 It is fixed to the fixed position of the two rail plates 111. It is added that the operation unit 2C can be a microcontroller, and the control unit 1C can be a main control circuit board with a controller.

Refer again to Figures 2 to 5. Please also refer to FIG. 6 and FIG. 7 at the same time, showing a third perspective view and a fourth perspective view of the ultrasonic flowmeter of the present invention. As shown in the figure, the casing 13 further includes at least one adjustment port 131 formed on the casing 13; wherein, each adjustment port 131 is correspondingly engaged with a detachable sealing cover 132. It is added that the detachable sealing cover 132 can be a transparent cover. With this setting, the user can observe and adjust the position and usage status of the second ultrasonic sensor 12 in real time through the adjustment port 131. At the same time, the detachable sealing cover 132 and the corresponding adjustment port 131 are tightly covered with each other to increase the effect of eliminating noise interference. As shown in FIG. 6, the ultrasonic flowmeter of the present invention further includes: a circuit assembly 14 disposed on the housing 13 and having at least one circuit hole 141. It is added that, as can be seen from FIG. 2, each clamping unit 112 includes: an arc surface 1121 formed on the front surface of the clamping unit 112 and a side surface formed on the clamping unit 112的一Installing hole 1122. It is worth noting that through the design of the curved surface 1121, the two clamping units 112 can be more closely adhered to the outer surface of the pipe 2 to enhance the adhesion of the two clamping units 112 to the pipe 2 Increase the controllability and stability during taxiing. Moreover, the surface of the second ultrasonic sensor 12 is also curved, which further improves the accuracy of the second ultrasonic sensor 12.

In this way, the above-mentioned system has completely and clearly explained the technical characteristics and perspective view of the ultrasonic wave flowmeter of the present invention. Through the above, we can know that the new system has the following advantages:

(1) The fixed ultrasonic flowmeter 1'different from the conventional one is fixedly installed on the pipe 2', so that its mobility and convenience are reduced. The new ultrasonic flowmeter 1 mainly includes: a main control module C, a guide rail module 11, and two ultrasonic sensors 12. The two ultrasonic sensors 12 are electrically connected to the main control module C and disposed beside the pipeline 2. In the present invention, the two ultrasonic sensors 12 obtain a first propagation time and a second propagation time of the ultrasonic wave in the pipeline 2 by sending and receiving ultrasonic waves, and transmit a plurality of propagation time signals to the main control Module C. Furthermore, the main control module C passes the plurality of propagation time signals through a flow rate calculation formula to obtain the flow rate of the fluid in the pipeline 2. In this way, the novel ultrasonic flowmeter 1 can provide the advantages of non-contact measurement, wide application range, and easy installation and maintenance. On the other hand, the design of the present invention's clamping unit 112 and the surface of the second ultrasonic sensor 12 is curved, so that the new type of ultrasonic flowmeter 1 is more suitable for the pipe 2 to improve the smoothness of operation and The accuracy of the data.

It must be emphasized that the above detailed description is a specific description of the feasible embodiment of the new model, but the embodiment is not intended to limit the patent scope of the new model. Any equivalent implementation or change that does not deviate from the technical spirit of the new model, Should be included in the patent scope of this case.

>This new type> 1: Ultrasonic flowmeter 2: pipeline C: Main control module 1C: Control unit 2C: arithmetic unit 3C: Display unit 4C: Button group 5C: physical button 11: Rail module 111: rail plate 112: clamping unit 1121: Curved surface 1122: mounting hole 113: locking plate 114: Locking hole 12: Ultrasonic sensor 13: Shell 131: Adjustment port 132: Tilting sealing cover 14: Line assembly 141: line hole

>Knowledge> 1’: Fixed ultrasonic flowmeter 2’: pipeline 3’: Adhesive 4’: Sonic cream 11’: Ultrasonic sensor

FIG. 1 is a perspective view showing a conventional fixed ultrasonic flowmeter; Fig. 2 is a first perspective view showing an ultrasonic flowmeter of the present invention; FIG. 3 is a second perspective view showing the ultrasonic wave flowmeter of the new type; Figure 4 is a schematic diagram showing ultrasonic sensors and pipes; Figure 5 is a block diagram showing the main control module and the ultrasonic sensor; FIG. 6 is a third perspective view showing the ultrasonic wave flowmeter of the new type; FIG. 7 is a fourth perspective view showing the ultrasonic wave flowmeter of the new type.

1: Ultrasonic flowmeter

2: pipeline

C: Main control module

11: Rail module

111: rail plate

112: clamping unit

1121: Curved surface

1122: mounting hole

12: Ultrasonic sensor

Claims (10)

An ultrasonic flowmeter is applied to a pipeline with a fluid, and includes: One main control module; A guide rail module; wherein, the pipeline passes through the guide rail module; Two ultrasonic sensors are electrically connected to the main control module, and are set and slide in the guide rail module; Wherein, the two ultrasonic sensors are arranged beside the pipeline, and the two ultrasonic sensors send and receive ultrasonic waves to each other to obtain a first propagation time and a second propagation time of the ultrasonic waves in the pipeline, and the plural A propagation time signal is transmitted to the main control module; The main control module passes the plurality of propagation time signals through a flow rate calculation formula to obtain the flow rate of the fluid in the pipeline, and then obtains the flow rate of the pipeline. The ultrasonic flowmeter as described in item 1 of the patent application scope, wherein the rail module includes: Two guide rail plates are respectively arranged on the upper and lower sides of the pipeline to form a sliding space; The two clamping units are arranged between the two rail plates and slide in the sliding space, and the two ultrasonic sensors are respectively arranged in the corresponding two clamping units. The ultrasonic flowmeter as described in item 1 of the patent application scope, wherein the ultrasonic flowmeter further includes: A shell housing the guide rail module and the two ultrasonic sensors; wherein the pipe is penetrated through the shell. The ultrasonic flowmeter as described in item 1 of the patent application scope, wherein the two ultrasonic sensors are respectively located on both sides of the pipeline. The ultrasonic flowmeter as described in item 1 of the patent application scope, wherein the main control module further includes: A control unit; An arithmetic unit, which is electrically connected to the control unit; A display unit electrically connected to the control unit; and One button group is electrically connected to the control unit; Wherein, the button group transmits a corresponding signal to the control unit according to the button pressed by an external force; Wherein, the control unit obtains the flow rate of the fluid through the flow rate calculation formula by the incident angle of the ultrasonic wave emitted by the two ultrasonic sensors of the pipeline, the inner diameter of the pipeline and the propagation time of the ultrasonic wave; Wherein, the fluid calculation formula is the number of propagation times in the fluid multiplied by the inner diameter of the pipe and divided by the sine of twice the incident angle of ultrasound, and then multiplied by the second propagation time minus the first The propagation time is divided by the quotient of the first propagation time and the second propagation time to obtain the flow rate of the fluid. The ultrasonic flowmeter as described in item 2 of the patent application scope, wherein each of the two guide rail plates includes: Two locking plates are formed by bending the two ends of the guide plate respectively, and a plurality of locking holes arranged in parallel intervals are formed on each locking plate; Wherein, when the two clamping units slide between the two guide rail plates, they are fixed on the two guide rail plates by locking with one of the plurality of locking holes. The ultrasonic flowmeter as described in item 2 of the patent application scope, wherein each clamping unit of the two clamping units includes: An arc surface is formed on the front surface of the clamping unit and is in contact with the outer surface of the pipe; A mounting hole is formed on the side of the clamping unit. The ultrasonic flowmeter as described in item 3 of the patent application scope, wherein the ultrasonic flowmeter further includes: A circuit assembly is arranged on the casing and has at least one circuit hole. The ultrasonic flowmeter as described in item 3 of the patent application scope, wherein the housing further includes: At least one adjustment port is formed on the housing; wherein, each adjustment port is correspondingly engaged with a detachable sealing cover. The ultrasonic flowmeter as described in item 5 of the patent application scope, wherein the button group is composed of a plurality of physical buttons or a plurality of virtual buttons displayed on the display unit.

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