CN217083844U

CN217083844U - Ultrasonic flowmeter

Info

Publication number: CN217083844U
Application number: CN202220794481.8U
Authority: CN
Inventors: 谭文胜; 戴龙六
Original assignee: Basic Intelligence Technology Co ltd
Current assignee: Basic Intelligence Technology Co ltd
Priority date: 2022-04-06
Filing date: 2022-04-06
Publication date: 2022-07-29
Anticipated expiration: 2032-04-06

Abstract

The utility model belongs to the technical field of flow measurement, a ultrasonic flowmeter is disclosed, built-in have fluid survey buret, set up the mounting groove through the pipe wall inboard at surveying buret, all install at least a pair of ultrasonic sensor in the mounting groove to arrange ultrasonic sensor in the pipe wall of surveying buret, make ultrasonic signal needn't pass through the pipe wall transmission of fluid pipeline, directly pass through the interior fluid transmission of pipe wall, thereby improve measured signal intensity. Meanwhile, a signal reflection piece is further arranged on the inner side of the pipe wall of the measuring pipe, any ultrasonic sensor in each pair of ultrasonic sensors can send an ultrasonic signal to be reflected to the other ultrasonic sensor through the signal reflection piece, the ultrasonic signal is reflected by the signal reflection piece and then received, the propagation time of the ultrasonic signal in the measuring pipe can be prolonged, namely, the measuring time difference is prolonged, and the measuring accuracy can be improved.

Description

Ultrasonic flowmeter

Technical Field

The utility model belongs to the technical field of the flow measurement, concretely relates to ultrasonic flowmeter.

Background

Ultrasonic flow meters are generally based on the transit time difference method and utilize ultrasonic sensors to determine the flow rate, velocity, etc. of a fluid flowing through a pipe. During the measurement, the ultrasonic signal emitted by the ultrasonic sensor is coupled into the pipe and received by another ultrasonic sensor at the end of the predetermined path of the signal. The propagation time of the ultrasonic signal in the fluid flowing state can be calculated from the transmission time and the reception time of the ultrasonic signal, and then the flow rate and the flow velocity of the fluid can be calculated by comparing the propagation time of the ultrasonic signal in the fluid non-flowing state with the propagation time of the ultrasonic signal.

With regard to the arrangement of the ultrasonic sensor on the fluid line, most of the measuring devices available on the market fix the ultrasonic sensor on the outside of the fluid line. Such a so-called Clamp-on measuring device can be realized relatively simply in terms of construction technology. However, the ultrasonic signal must be transmitted through the wall of the fluid line, which usually results in a reduction in the measurement signal strength.

Disclosure of Invention

An object of the utility model is to provide an ultrasonic flowmeter, built-in have fluid survey buret, can arrange ultrasonic sensor in surveying the pipe wall of buret for ultrasonic signal needn't pass through the pipe wall transmission of fluid pipeline, thereby improve measuring signal intensity.

In order to achieve the above object, the utility model provides an ultrasonic flowmeter, including surveying buret and at least a pair of ultrasonic sensor, the mounting groove has been seted up to survey the pipe wall inboard of buret, and is at least a pair of ultrasonic sensor all install in the mounting groove, survey the pipe wall inboard of buret and still be provided with signal reflection spare, it is every right among the ultrasonic sensor arbitrary ultrasonic sensor can send ultrasonic signal warp signal reflection spare reflects to another ultrasonic sensor.

In some embodiments, each pair of the ultrasonic sensors is spaced apart in an axial direction of the measurement pipe.

In some embodiments, a sealing element is arranged on one side of the ultrasonic sensor close to the inside of the measuring tube, a sealing groove is communicated with one side of the mounting groove close to the inside of the measuring tube, and the sealing element is located in the sealing groove.

In some embodiments, the radial dimension of the seal groove is less than the radial dimension of the mounting groove.

In some embodiments, a fixing member is disposed on a side of the ultrasonic sensor, which is close to the outside of the measuring tube, a fixing groove is communicated with a side of the mounting groove, which is close to the outside of the measuring tube, the fixing groove is communicated with the outside of the measuring tube, and the fixing member is located in the fixing groove.

In some embodiments, the radial dimension of the mounting groove is smaller than the radial dimension of the fixation groove.

In some embodiments, a fixing block is convexly arranged on one side of the fixing member close to the ultrasonic sensor, the fixing block is located in the mounting groove, and the fixing block abuts against the ultrasonic sensor.

In some embodiments, the ultrasonic sensor is connected with a conductive wire, the fixing member is provided with an avoiding groove, and the conductive wire is arranged in the avoiding groove.

In some embodiments, a case is further disposed outside the measuring tube, and a circuit board is mounted in the case and electrically connected to the conductive wire.

In some embodiments, the measuring tube further comprises a protective shell, the protective shell is installed outside the measuring tube and the case, and the protective shell is fixedly connected with the case

The beneficial effects of the utility model reside in that, the ultrasonic flowmeter who provides, built-in have fluid to survey buret, set up the mounting groove through the pipe wall inboard at surveying buret, all install at least a pair of ultrasonic sensor in the mounting groove to arrange ultrasonic sensor in surveying buret's pipe wall, make ultrasonic signal needn't pass through fluid pipeline's pipe wall transmission, directly pass through the interior fluid transmission of pipe wall, thereby improve measured signal intensity.

Meanwhile, a signal reflection piece is further arranged on the inner side of the pipe wall of the measuring pipe, any ultrasonic sensor in each pair of ultrasonic sensors can send an ultrasonic signal to be reflected to the other ultrasonic sensor through the signal reflection piece, the ultrasonic signal is reflected by the signal reflection piece and then received, the propagation time of the ultrasonic signal in the measuring pipe can be prolonged, namely, the measuring time difference is prolonged, and the measuring accuracy can be improved.

Drawings

FIG. 1 is an exploded view of an ultrasonic flow meter configuration;

FIG. 2 is a schematic illustration of ultrasonic signal transmission of an ultrasonic flow meter;

FIG. 3 is a schematic view of an ultrasonic flow meter installation.

Description of reference numerals:

10. a measurement tube; 11. mounting grooves; 12. a sealing groove; 13. fixing grooves; 20. an ultrasonic sensor; 21. a conductive wire; 30. a signal reflection member; 40. a seal member; 50. a fixing member; 51. a fixed block; 60. a case; 61. a circuit board; 611. a support bar; 62. a battery; 63. a display screen; 64. a see-through housing; 641. buckling; 65. a cover is turned; 651. a card slot; 70. a protective shell; 100. an ultrasonic flow meter; 200. a flange; 300. a pipeline; 310. a butterfly valve; 320. and (3) a filter.

Detailed Description

In order to facilitate an understanding of the invention, specific embodiments thereof will be described in more detail below with reference to the accompanying drawings.

As used herein, unless otherwise specified or defined, "first" and "second" … are used merely for name differentiation and do not denote any particular quantity or order.

As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items, unless specified or otherwise defined.

It should be noted that "fixed to" or "connected to" in this document may be directly fixed to or connected to one element or may be indirectly fixed to or connected to one element.

As shown in fig. 1 to 2, an embodiment of the present invention discloses an ultrasonic flowmeter 100, including a measuring pipe 10 and a pair of ultrasonic sensors 20 capable of flowing through fluid, a mounting groove 11 has been opened on the pipe wall inner side of the measuring pipe 10, a pair of ultrasonic sensors 20 are all installed in the mounting groove 11, the pipe wall inner side of the measuring pipe 10 is further provided with a signal reflection element 30, wherein any ultrasonic sensor 20 can send an ultrasonic signal to be reflected to another ultrasonic sensor 20 via the signal reflection element 30.

Wherein the measuring tube 10 has a circular cross-section inside, which fluid may refer to liquid or gas, the ultrasonic sensor 20 is securely fixed in the mounting groove 11 and preferably not exposed to external forces that could cause damage to the ultrasonic sensor 20, wherein the measuring tube 10 is as far as possible not corroded in humid environmental conditions.

Through offering mounting groove 11 at the pipe wall inboard of surveying pipe 10, install ultrasonic sensor 20 in mounting groove 11 to arrange ultrasonic sensor 20 in the pipe wall of surveying pipe 10, make ultrasonic signal needn't pass through the pipe wall transmission of fluid pipeline, directly pass through the interior fluid transmission of pipe wall, thereby improve measuring signal intensity.

In the present embodiment, an embodiment of a pair of ultrasonic sensors 20 is adopted. In other possible embodiments, a plurality of pairs of ultrasonic sensors 20 may be provided, and are not limited herein.

It should be noted that, for each pair of ultrasonic sensors 20, a signal reflecting member 30 should be provided, and each pair of ultrasonic sensors 20 and its corresponding signal reflecting member 30 are distributed on the left and right sides of the fluid flow direction. And preferably, the central positions of each signal reflection member 30 and its corresponding pair of ultrasonic sensors 20 should be distributed in the same radial direction of the measurement pipe 10.

For each pair of ultrasonic sensors 20, the two ultrasonic sensors 20 alternately serve as signal transmitters, and when one ultrasonic sensor 20 serves as a signal transmitter, the other ultrasonic sensor 20 serves as a signal receiver, and the signal transmitter transmits an ultrasonic signal to the signal reflection member 30, and the signal reflection member 30 reflects the ultrasonic signal to the signal receiver, wherein the propagation path of the ultrasonic signal is represented by a dotted line shown in fig. 2.

That is, each ultrasonic sensor 20 is configured to transmit an ultrasonic signal once as a signal transmitter and receive an ultrasonic signal once as a signal receiver, and the transmission and reception are sequentially cycled.

In the conventional ultrasonic flowmeter, the ultrasonic sensors 20 are respectively arranged on the left side and the right side of the flow direction of the fluid, the ultrasonic sensor 20 on one side sends an ultrasonic signal, the ultrasonic sensor 20 on the opposite side directly receives the ultrasonic signal, and the ultrasonic signal only passes through the fluid in the pipe once.

And the embodiment of the utility model provides an in, to every to ultrasonic sensor 20, send ultrasonic signal to signal reflection piece 30 by an ultrasonic sensor 20 on, reflect another ultrasonic sensor 20 through signal reflection piece 30 again, make ultrasonic signal receive again after signal reflection piece 30 reflects, ultrasonic signal is twice through intraductal fluid, consequently can prolong the propagation time of ultrasonic signal in surveying buret 10, the extension is measured the time difference promptly, and then can improve measurement accuracy.

Wherein the two ultrasonic sensors 20 of each pair of ultrasonic sensors 20 are spaced apart from each other in the axial direction of the measuring pipe 10, the signal reflecting member 30 should be a material having a reflecting plane and a high hardness, such as a stainless steel plane reflecting sheet.

In this embodiment, a sealing member 40, such as a sealant or a sealing ring that can be sleeved on the outside of the ultrasonic sensor 20, is disposed on a side of the ultrasonic sensor 20 close to the inside of the measuring tube 10, and a sealing groove 12 is communicated with a side of the mounting groove 11 close to the inside of the measuring tube 10, the sealing member 40 is located in the sealing groove 12, and the size of the sealing member 40 should be matched with the size of the sealing groove 12, so that the sealing member 40 can fill the sealing groove 12, and a sealing effect is ensured.

Wherein, the radial dimension of the sealing groove 12 is smaller than that of the mounting groove 11, so as to further ensure the sealing effect.

The ultrasonic sensor 20 is mounted in the measuring tube 10 without play and substantially without pressure or force. In order to prevent the pressurized fluid in the measuring pipe 10 from pushing the ultrasonic sensor 20 outwards, in the present embodiment, the fixing member 50 is disposed on the side of the ultrasonic sensor 20 close to the outside of the measuring pipe 10, the fixing groove 13 is communicated with the side of the mounting groove 11 close to the outside of the measuring pipe 10, the fixing groove 13 is communicated with the outside of the measuring pipe 10, and the fixing member 50 is disposed in the fixing groove 13.

Wherein the radial dimension of the mounting groove 11 is smaller than the radial dimension of the fixing groove 13. A plurality of mounting blind holes are formed on the outer side wall of the mounting groove 11 close to the fixing groove 13. And the mounting 50 is provided with a plurality of mounting through holes matched with the mounting blind holes, and the mounting through holes and the mounting blind holes are inserted through screws, so that the mounting 50 can be detachably connected with the measuring tube 10, and the ultrasonic sensor 20 can be conveniently detached to be replaced or maintained while the ultrasonic sensor 20 is fixed.

In this embodiment, a fixing block 51 is convexly disposed on a side of the fixing member 50 close to the ultrasonic sensor 20, the fixing block 51 is located in the mounting groove 11, and the fixing block 51 abuts against the ultrasonic sensor 20. The fixing block 51 of the fixing member 50 is inserted into the mounting groove 11 and abuts against the ultrasonic sensor 20, thereby further fixing the ultrasonic sensor 20.

In this embodiment, the ultrasonic sensor 20 is connected with a conductive wire 21, and the fixing member 50 and the fixing block 51 are provided with an avoiding groove, in which the conductive wire 21 is disposed.

In this embodiment, a casing 60 is further provided outside the measuring pipe 10, a circuit board 61 is mounted in the casing 60, and the circuit board 61 is electrically connected to the conductive wire 21. Wherein the case 60 may be shaped as a rectangular body, and preferably, the case 60 is integrally formed with the measurement pipe 10.

After the ultrasonic sensor 20 receives the ultrasonic signal, an electrical signal is generated and transmitted to the circuit board 61, and the circuit board 61 can automatically calculate the flow rate, the flow velocity, and the like of the flow according to the time difference between the signal transmitter and the signal receiver.

Wherein, optionally still install battery 62 in the machine box 60, supply power for circuit board 61 through this battery 62, can avoid connecting the electric wire plug, more convenient to use.

In this embodiment, two support rods 611 are further disposed below the circuit board 61, one end of the support rod 611 far away from the circuit board 61 is connected to the bottom of the case 60, a receiving space is formed among the circuit board 61, the support rod 611 and the bottom of the case 60, and the battery 62 can be mounted in the receiving space, i.e., the battery 62 is disposed below the circuit board 61 and between the two support rods 611, so that the structure can be more compact.

Wherein, the circuit board 61 is further provided with a display screen 63 for displaying the flow measurement result. A see-through housing 64 is also fixedly provided on the top of the housing 60. The top of the perspective shell 64 is provided with a transparent part, the size of the transparent part is matched with that of the display screen 63, and the transparent part is positioned above the display screen 63, so that a user can view the flow measurement result displayed on the display screen 63 through the transparent part.

Furthermore, a flip 65 is connected to an edge of the top of the see-through housing 64 through a rotating shaft, a folded edge is further disposed on one side of the flip 65 away from the rotating shaft, a clamping groove 651 is disposed on the folded edge, a buckle 641 is correspondingly disposed on one side of the see-through housing 64 away from the rotating shaft, and the buckle 641 is matched with the clamping groove 651 to fasten the flip 65 and the see-through housing 64.

The ultrasonic flowmeter 100 provided in this embodiment further includes a protective casing 70, the protective casing 70 is mounted outside the measuring pipe 10 and the casing 60, and the protective casing 70 is fixedly connected to the casing 60. A nameplate may be attached to the exterior of the protective case 70.

As shown in fig. 3, the ultrasonic flow meter 100 provided in the present embodiment can be applied to an existing pipeline system, which includes the ultrasonic flow meter 100, the flange 200 and the pipeline 300, wherein the flanges 200 can be respectively disposed at both ends of the measuring pipe 10 of the ultrasonic flow meter 100, the ultrasonic flow meter 100 is mounted on the pipeline 300 through the flanges 200, so that the measuring pipe 10 is communicated with the pipeline 300, and the fluid in the pipeline 300 can be measured in real time when flowing through the measuring pipe 10, wherein the direction indicated by the arrow is the flow direction of the fluid. Wherein, the pipe 300 is also provided with elements such as a butterfly valve 310 and a filter 320 through the flange 200.

The above examples are not intended to be exhaustive list of the present invention, and there may be many other embodiments not listed. Any replacement and improvement made on the basis of not violating the conception of the utility model belong to the protection scope of the utility model.

Claims

1. Ultrasonic flowmeter, its characterized in that, including surveying buret and at least a pair of ultrasonic sensor, the mounting groove has been seted up to the pipe wall inboard of surveying buret, and is at least a pair of ultrasonic sensor all install in the mounting groove, the pipe wall inboard of surveying buret still is provided with signal reflection spare, and is every right among the ultrasonic sensor any ultrasonic sensor can send ultrasonic signal warp signal reflection spare reflects another ultrasonic sensor.

2. An ultrasonic flow meter as claimed in claim 1, wherein each pair of the ultrasonic transducers is spaced apart in the axial direction of the measurement pipe.

3. An ultrasonic flow meter according to claim 1, wherein a sealing member is disposed on a side of the ultrasonic sensor adjacent to the inside of the measuring tube, and a sealing groove is communicated with a side of the mounting groove adjacent to the inside of the measuring tube, and the sealing member is disposed in the sealing groove.

4. The ultrasonic flow meter of claim 3, wherein the radial dimension of the seal groove is less than the radial dimension of the mounting groove.

5. The ultrasonic flowmeter as set forth in any of claims 1 to 4, wherein a fixing member is provided on a side of said ultrasonic sensor adjacent to said measuring tube, a fixing groove is communicated with a side of said mounting groove adjacent to said measuring tube, said fixing groove is communicated with an outside of said measuring tube, and said fixing member is located in said fixing groove.

6. The ultrasonic flow meter of claim 5, wherein the radial dimension of the mounting groove is less than the radial dimension of the retaining groove.

7. An ultrasonic flow meter as claimed in claim 6, wherein a fixing block is provided on a side of the fixing member adjacent to the ultrasonic sensor, the fixing block is located in the mounting groove, and the fixing block abuts against the ultrasonic sensor.

8. The ultrasonic flow meter according to claim 5, wherein the ultrasonic sensor is connected with a conductive wire, and the fixing member is provided with an avoiding groove, and the conductive wire is disposed in the avoiding groove.

9. The ultrasonic flow meter of claim 8, wherein a case is further disposed outside the measuring tube, and a circuit board is mounted in the case and electrically connected to the conductive wire.

10. An ultrasonic flow meter according to claim 9, further comprising a protective casing, the protective casing being mounted outside the measurement tube and the housing, the protective casing being fixedly connected to the housing.