CN206321282U - A kind of parallel Eight-channel ultrasonic flowmeter sensor - Google Patents

Abstract

The utility model relates to a parallel eight-channel ultrasonic flowmeter sensor, which includes a horizontally arranged pipeline, and the two ends of the axial direction of the pipeline are provided with a first transducer mounting seat and a second transducer mounting seat which are symmetrical to each other. Both the first transducer mounting base and the second transducer mounting base are provided with eight mounting holes, and the mounting holes are all communicated with the inner cavity of the pipeline, and the eight mounting holes on the first transducer mounting base are connected to the second transducer mounting base. The eight installation holes on the energy device mounting base are arranged oppositely in pairs, the axes of the two opposite installation holes are located on the same straight line to form a straight-through sound channel, and the eight through-type sound channels are located in pairs on the same horizontal plane to form a four There are two parallel horizontal planes, and an ultrasonic transducer is arranged in the mounting hole. The utility model can accurately measure the time difference of the forward and reverse propagation of the ultrasonic wave along the water flow on the four different horizontal planes of the fluid by arranging two pairs of transducers intersecting each other on the four horizontal planes of the fluid, thereby improving the efficiency of fluid flow measurement. Accuracy.

Description

A parallel eight-channel ultrasonic flowmeter sensor

technical field

The utility model relates to a flowmeter sensor, in particular to a parallel eight-channel ultrasonic flowmeter sensor.

Background technique

Ultrasonic flowmeter (USF for short) is a measuring instrument that uses the propagation characteristics of ultrasonic waves in fluids to measure flow. Compared with traditional mechanical flowmeters and electromagnetic flowmeters, it has high measurement accuracy, strong adaptability to pipe diameter, non-contact fluid, convenient use, easy digital management, etc. It is widely used in electric power, petroleum, chemical industry, especially water supply system is widely used.

The ultrasonic flowmeter is composed of a flowmeter body, an ultrasonic transducer and its installation parts, a signal processing unit and a flow computer. The ultrasonic transducer is made of piezoelectric elements such as cast ferrite lead. Fluid volume flow is measured by detecting the effect of fluid on an ultrasound beam (or pulse of ultrasound).

The sound channel is the path through which the sound wave of the transducer passes. The ultrasonic wave is in contact with the measured gas on the path, and its sound velocity is affected by the flow velocity, so that the forward and reverse reception times are different. This is the basic principle of the speed difference method. The sound channel allows ultrasonic waves to be sampled in the fluid, so the number of sampling surfaces depends on the length and distribution of the sound channel, which also determines the value of the flow field calibration factor. The length of the sound channel is determined by the signal of the transducer and the ability of transmitting and receiving signals in the converter and the timing accuracy. The position of the flow stabilizer, the length of the front and rear straight pipe sections and the user's requirements for the reliability of the instrument are determined.

Traditional ultrasonic flowmeters are generally direct-firing single-channel or dual-channel, with low measurement accuracy, low reliability of actual measurement, and a large impact on accuracy when one channel fails.

Utility model content

The technical problem to be solved by the utility model is to provide a parallel eight-channel ultrasonic flowmeter sensor with simple structure, strong anti-interference ability, and high-precision measurement even in the presence of interference such as asymmetry.

The technical scheme of the utility model for solving the above-mentioned technical problems is as follows: a parallel eight-channel ultrasonic flowmeter sensor includes horizontally arranged pipes, and the two ends of the axial direction of the pipes are respectively equipped with mutually symmetrical first transducers. seat and the second transducer mounting seat, eight mounting holes are provided on the first transducer mounting seat and the second transducer mounting seat, and the mounting holes are all connected to the inner cavity of the pipeline In communication, the eight mounting holes on the first transducer mounting base are opposite to the eight mounting holes on the second transducer mounting base, and the two mounting holes that are oppositely arranged The axis lines of the holes are located on the same straight line to form a straight-through sound channel, and a total of eight straight-through sound channels are formed. Two of the eight through-type sound channels are located on the same horizontal plane to form four parallel horizontal planes. The mounting holes Ultrasonic transducers are arranged inside, and flanges are arranged at both ends of the pipeline.

The beneficial effects of the utility model are: strong anti-interference ability, the sound channels of the transducers on each horizontal plane cross each other, so that the flow measurement of the fluid in the pipeline is not affected by the fluid flow pattern to a large extent, even if there is asymmetry High-precision measurement can also be achieved in the case of interference such as; redundancy, if any one or two transducers fail, the ultrasonic flowmeter will still not lose the measurement capability; low pressure loss, each transducer is firmly Installed inside the sensor housing, without going deep into the pipeline, it will not cause pressure loss of the fluid in the pipeline, and will not affect the fluid state at the same time; realize bidirectional measurement, and can measure in both forward and reverse directions; through Two pairs of intersecting transducers are arranged on each of the four horizontal planes of the fluid, which can accurately measure the time difference of the forward and reverse propagation of the ultrasonic wave along the water flow on the four different horizontal planes, which can greatly improve the accuracy of fluid flow measurement. Even in the case of asymmetrical, turbulent currents, an optimal measurement of the flow rate is guaranteed.

On the basis of the above technical solutions, the utility model can also be improved as follows.

Further, the axes of the two straight-through sound channels on the same horizontal plane are arranged perpendicular to each other, and the angle between the axis of each through-type sound channel and the axis of the pipe is 45°.

The beneficial effect of adopting the above-mentioned further scheme is: the angle between the axis line of the straight-through sound channel and the axis line of the pipeline is 45°, the measurement effect is good, the accuracy is high, and the design and installation of each component can be satisfied. The longer the total length of the number of sound channels, the smaller the error of flow measurement, which greatly improves the measurement accuracy level of the ultrasonic flowmeter.

Further, the cross-sections of the first transducer mount and the second transducer mount are both square.

The beneficial effect of adopting the above-mentioned further solution is: the cross-section of the first transducer mounting seat and the cross-section of the second transducer mounting seat both adopt a square structure, and when the first transducer mounting seat and the second transducer mounting seat are installed The mounting holes are arranged on the two vertical faces of the seat, so that two of the eight straight-through sound channels are located on the same plane.

Further, two mounting hole setting surfaces are provided on the first transducer mounting base and the second transducer mounting base, and the four mounting hole setting surfaces are respectively set on the first transducer mounting base. On the two vertical sides of the transducer mounting seat away from the pipeline and on the two vertical sides of the second transducer mounting base away from the pipeline, each of the mounting hole setting surfaces is provided with four mounting holes .

The beneficial effect of adopting the above further solution is that the setting of the mounting hole setting surface facilitates the pre-determining of the position of the mounting hole during the manufacturing process, which is convenient for manufacturing.

Further, the included angle between two adjacent mounting hole setting surfaces is 90 degrees.

Further, the pipe, the first transducer mount and the second transducer mount are an integrally arranged cuboid structure.

The beneficial effect of adopting the above further solution is that: the pipe, the first transducer mounting seat and the second transducer mounting seat facilitate the manufacture of the pipe and the first transducer mounting seat and the second transducer mounting seat.

Further, the end surface of the installation hole away from the end of the pipe is perpendicular to the axis of the installation hole.

The beneficial effect of adopting the above-mentioned further scheme is that: the end surface of the installation hole away from the end of the pipe is perpendicular to the axis line of the installation hole. The mounting hole simplifies the manufacturing process and improves the manufacturing accuracy.

Further, a liner connecting the pipeline and the flange is provided between the pipeline and the flange.

The beneficial effect of adopting the above further scheme is that the pipeline and the flange are connected through the liner, which facilitates the connection between the pipeline and the flange.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the plan view after installation of the pipeline of the utility model, the first transducer mount and the second transducer mount;

Fig. 3 is the left view of the utility model;

Fig. 4 is A-A plane sectional view among Fig. 3;

Fig. 5 is a sectional view of plane B-B in Fig. 3 .

In the accompanying drawings, the list of parts represented by each label is as follows:

1. Pipeline, 2. First transducer mount, 3. Second transducer mount, 4. Mounting hole, 5. Straight-through sound channel, 6. Flange, 7. Mounting hole setting surface, 8. Liner.

detailed description

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

As shown in Fig. 1, Fig. 4 and Fig. 5, in one embodiment of the present invention, it includes a horizontally arranged pipeline 1, and the two ends of the axial direction of the pipeline 1 are respectively provided with mutually symmetrical first transducers. The transducer mount 2 and the second transducer mount 3, the first transducer mount 2 and the second transducer mount 3 are provided with eight mounting holes 4, the mounting holes 4 All communicate with the inner cavity of the pipeline 1, the eight mounting holes 4 on the first transducer mounting base 2 and the eight mounting holes 4 on the second transducer mounting base 3 The two mounting holes 4 are set opposite to each other, and the axis lines of the two mounting holes 4 are located on the same straight line to form a straight-through sound channel 5, which constitutes eight straight-through sound channels 5, and the eight through-type sound channels 5 are two The two are located on the same horizontal plane, forming four mutually parallel horizontal planes, and ultrasonic transducers are arranged in the mounting holes 4 .

As shown in FIG. 2 , in the embodiment, the pipeline 1 , the first transducer mounting base 2 and the second transducer mounting base 3 adopt an integrated square structure, and its horizontal section is square. As shown in Figure 3, two mounting hole setting surfaces 7 are provided on the first transducer mounting base 2 and the second transducer mounting base 3, and the four mounting hole setting surfaces 7 are respectively It is located on the two vertical sides of the first transducer mounting base 2 away from the pipeline 1 and on the two vertical sides of the second transducer mounting base 3 away from the pipeline 1. During the manufacturing process, It is possible to form an inverted right angle on the two vertical sides of the end of the first transducer mount 2 away from the pipe 1 and the two vertical sides of the second transducer mount 3 away from the end of the pipe 1 The mounting hole setting surface 7, the angle between two adjacent mounting hole setting surfaces 7 is 90 degrees, and each of the mounting hole setting surfaces 7 is provided with four mounting holes 4. The mounting holes 4 on the first transducer mounting base 2 and the mounting holes 4 of the second transducer mounting base 3 are symmetrically arranged, and the two mounting holes 4 on the first transducer mounting base 2 and the second transducer The two mounting holes 4 on the transducer mounting base 3 are correspondingly arranged on the same plane, forming four horizontal planes in total, and each horizontal plane corresponds to two mounting holes 4 on the first transducer mounting base 2 and two second mounting holes 4 Two mounting holes 4 of the transducer mount 3.

The pipeline 1 communicates with the flange 6 through a liner 8, and one end of the liner 8 is fixed with an interference fit inserted into the inner wall of the pipeline 1, and the flange 6 and the liner 8 The inner wall of the other end is fixed by interference fit.

The utility model has strong anti-interference ability, and the sound channels of the transducers on each horizontal plane cross each other, so that the flow measurement of the fluid in the pipeline 1 is not affected by the fluid flow pattern to a large extent, even in the case of interference such as asymmetry High-precision measurement can also be achieved under low pressure; redundancy, if any one or two transducers fail, the ultrasonic flowmeter will still not lose its measurement capability; low pressure loss, each transducer is firmly installed in the sensor shell Inside the body, it does not go deep into the pipeline 1, which will not cause the pressure loss of the fluid in the pipeline 1, and will not affect the fluid state at the same time; realize two-way measurement, and can measure in both forward and countercurrent directions; through the fluid Two pairs of transducers intersecting each other are arranged on each of the four horizontal planes, which can accurately measure the time difference of the forward and reverse propagation of the ultrasonic wave along the water flow on four different horizontal planes, which can greatly improve the accuracy of fluid flow measurement. An optimal measurement of the flow velocity is guaranteed even in the case of asymmetrical, turbulent currents.

The included angle between the axis line of the straight-through sound channel 5 and the axis line of the pipe 1 is 45°. The measurement effect is good and the accuracy is high. It can not only meet the design and installation of each component, but also make the total number of sound channels The longer the length, the smaller the error of flow measurement, which greatly improves the measurement accuracy level of the ultrasonic flowmeter. The cross section of the first transducer mounting seat 2 and the cross section of the second transducer mounting seat 3 all adopt a square structure. The mounting holes 4 are provided on the surface, so that two of the eight through-type sound channels 5 are located on the same plane. The end face of the mounting hole 4 away from the end of the pipe 1 is perpendicular to the axis of the mounting hole 4. During the manufacturing process, the mounting hole 4 that meets the requirements can be processed only by drilling perpendicular to the end face, which simplifies The manufacturing process improves the manufacturing precision.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (7)

1. a kind of parallel Eight-channel ultrasonic flowmeter sensor, it is characterised in that described including horizontally disposed pipeline (1) The axis direction of pipeline (1) be respectively arranged at two ends with symmetrical first transducer mounting seat (2) and second transducer is installed Eight mounting holes (4) are equipped with seat (3), the first transducer mounting seat (2) and the second transducer mounting seat (3), Inner chamber of the mounting hole (4) with the pipeline (1) is connected, eight peaces on the first transducer mounting seat (2) Dress hole (4) is oppositely arranged two-by-two with eight mounting holes (4) on the second transducer mounting seat (3), is oppositely arranged The axial line of two mounting holes (4) is located at same straight line and constitutes a through type sound channel (5), and eight through types are constituted altogether Sound channel (5), eight through type sound channels (5) are located at same level two-by-two, constitute four horizontal planes being parallel to each other, described Ultrasonic transducer is equipped with mounting hole (4), the two ends of the pipeline (1) are equipped with flange (6).

2. a kind of parallel Eight-channel ultrasonic flowmeter sensor according to claim 1, it is characterised in that positioned at same The axial line of two through type sound channels (5) of horizontal plane is arranged in a mutually vertical manner, and axial line and the institute of each through type sound channel (5) The angle for stating the axial line of pipeline (1) is 45 °.

3. a kind of parallel Eight-channel ultrasonic flowmeter sensor according to claim 2, it is characterised in that described first The cross section of transducer mounting seat (2) and the cross section of the second transducer mounting seat (3) are square.

4. a kind of parallel Eight-channel ultrasonic flowmeter sensor according to claim 3, it is characterised in that described first In transducer mounting seat (2) and it is equipped with two mounting hole setting faces (7), four institutes on the second transducer mounting seat (3) State mounting hole setting face (7) be respectively provided at the first transducer mounting seat (2) away from the pipeline (1) two vertical edges on And on two vertical edges of the second transducer mounting seat (3) away from the pipeline (1), on each mounting hole setting face (7) Provided with four mounting holes (4).

5. a kind of parallel Eight-channel ultrasonic flowmeter sensor according to claim 3 or 4, it is characterised in that described The square body of pipeline (1), the first transducer mounting seat (2) and the second transducer mounting seat (3) integrated setting Structure.

6. a kind of parallel Eight-channel ultrasonic flowmeter sensor according to any one of Claims 1-4, its feature exists In the end face of the one end of the mounting hole (4) away from the pipeline (1) is vertical with the axial line of the mounting hole (4).

7. a kind of parallel Eight-channel ultrasonic flowmeter sensor according to any one of Claims 1-4, its feature exists In being communicated with the bushing pipe (8) of the pipeline (1) and the flange (6) between the pipeline (1) and the flange (6).