CN209745338U - Measuring tube for ultrasonic water meter - Google Patents

Abstract

the utility model discloses an ultrasonic water meter is with surveying buret, including measuring the body, it is provided with the mounting groove to measure body middle part both sides, install ultrasonic transducer in the mounting groove, survey still be provided with in the buret and be used for passing ultrasonic signal by the fluid of survey and send the guiding mechanism of receiver. The utility model provides a take buret of surveying of reflecting plate converts the electric energy to the ultrasonic wave through ultrasonic transducer, again with its transmission and pass the measured fluid, the receiver receives ultrasonic signal and converts the signal of telecommunication that represents the flow into through preceding stage circuit processing, this kind of ultrasonic water gauge is with surveying buret has measurement accuracy height, simple structure's characteristics.

Description

Measuring tube for ultrasonic water meter

Technical Field

The utility model relates to an ultrasonic water meter is with surveying buret.

Background

ultrasonic water meters have gradually become the first choice for metering liquid media in pipelines, and are a revolution in homogeneous liquid metering, and development trends in the water meter industry. The liquid metering device has the characteristics of no movable part, ultralow initial flow, low pressure loss and low power consumption, and is widely applied to liquid metering. The corresponding mechanical water meter has the defects of high lower flow limiting quantity, large pressure loss and incapability of realizing intelligent management. The water meter with the electronic device takes a mechanical water meter as a base meter, and is additionally provided with electronic components, so that the water meter has the functions of sensing and acquiring flow measurement parameters (such as impeller rotating speed), calculating and processing, data exchange and the like, can meet the requirements of modern management modes such as automatic reading of water consumption, water fee collection and payment management and the like, but overcomes the defects of high lower flow limit quantity, large pressure loss and the like of the machine in the aspect of metering performance.

Chinese patent No. CN204313902U discloses a measurement pipe section for ultrasonic water meter with rectification function, which comprises a straight pipe section, a transducer mounting shell located above the straight pipe section, sensor mounting holes connected in pairs at two sides of the straight pipe section, a threading pipe communicating the sensor mounting holes and the transducer mounting shell, and an inlet reducing hole and an outlet reducing hole connected at two ends of the straight pipe section respectively, wherein a flow guide ridge with a sheet structure for divergence is connected on the inner wall of the inlet reducing hole. The utility model discloses on the basis of undergauge to high velocity of flow fluid rectification, can also carry out the rectification to low velocity of flow fluid, can effectively reduce the error that the fluid is unstable to produce for the measurement accuracy of flowmeter obtains further improvement.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an ultrasonic water meter is with surveying buret. The measuring tube for the ultrasonic water meter has the characteristics of high measuring precision and simple structure.

The invention aims to be realized by the following technical scheme:

The utility model provides an ultrasonic water meter is with surveying buret, is including measuring the body, it is provided with the mounting groove to measure body middle part both sides, install ultrasonic transducer in the mounting groove, survey still to be provided with in the body and be used for passing the ultrasonic signal by the guide mechanism who is surveyed the fluid and sends the receiver.

After adopting above-mentioned technical scheme, when the fluid was through measuring the body, ultrasonic transducer converted the ultrasonic wave with the electric energy, with its transmission and pass through the measured fluid through guiding mechanism, and outside receiver receives ultrasonic signal and converts the signal of telecommunication that represents flow data after handling. The ultrasonic water meter measures the liquid flow in the round pipe by using a time difference method as a principle; the flow velocity of the fluid is proportional to the time difference between the forward and backward propagation of the ultrasonic waves. When ultrasonic waves are transmitted in liquid, ultrasonic pulses transmitted by the first probe are received by the second probe, meanwhile, the second probe also transmits ultrasonic pulses, the first probe receives the ultrasonic pulses, the sound wave transmission speed in the downstream direction is increased, the countercurrent direction is reduced, different transmission time exists in the same transmission distance, the flow speed is obtained by utilizing the relation between the transmission time difference and the measured flow speed, and then the flow is obtained. The utility model provides an ultrasonic transducer makes the fluid flow direction unanimous with ultrasonic wave propagation direction through guiding mechanism for measurement accuracy is more accurate, guarantees flow measurement's stability, and simple structure, and required part is less, and the cost is lower.

The utility model discloses further set up to: the guiding mechanism comprises two reflecting plates, the reflecting plates are arranged right in front of the ultrasonic transducer, and the setting angle of the reflecting plates and the horizontal plane form an angle of 45 degrees.

After adopting above-mentioned technical scheme, ultrasonic transducer becomes the horizontal direction after passing through the reflecting plate reflection with the ultrasonic wave, passes the measured fluid and arrives the receiver position and is received by the receiver, and the reflecting plate that 45 degrees set up can all reflect the ultrasonic wave that comes on the radial direction horizontal direction, and the guarantee ultrasonic wave can pass the measured fluid by the straight line for measurement accuracy is higher.

The utility model discloses further set up to: and a mounting rack is arranged on one side of the reflecting plate and is connected with the two sides of the pipe wall of the measuring pipe body in an interference fit manner.

After adopting above-mentioned technical scheme, through with mounting bracket interference fit on measuring the body for the installation of mounting bracket is stable, makes the position of reflecting plate can not lead to the angle change because of fluid impact.

The utility model discloses further set up to: the reflecting plate and the mounting rack are made of 316 stainless steel materials.

After the technical scheme is adopted, the 316 stainless steel material has better reflectivity and corrosion resistance, so that the service life of the integral measuring tube body is longer.

The utility model discloses further set up to: sealing gaskets are arranged on the two sides of the mounting groove and the ultrasonic transducer, a transducer pressing plate is arranged outside the ultrasonic transducer, and the transducer pressing plate is fixedly connected with the measuring tube body through screws.

After the technical scheme is adopted, the ultrasonic transducer is fixedly installed in the installation groove through the transducer pressing plate of the ultrasonic transducer, and the pressing plate is compacted through the screws, so that the sealing gaskets are pressed on two sides of the installation groove and the ultrasonic transducer.

To sum up, the utility model discloses following beneficial effect has:

The utility model provides a survey buret of taking reflecting plate converts the electric energy into the ultrasonic wave through ultrasonic transducer, again with its transmission and pass the measured fluid, the receiver receives ultrasonic signal and converts the signal of telecommunication that represents the flow into through preceding stage circuit processing, this kind of supersound water gauge survey buret has measurement accuracy height, simple structure's characteristics.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

Fig. 2 is a sectional view a-a in fig. 1.

Reference numerals: 1. measuring a pipe body; 2. mounting grooves; 3. an ultrasonic transducer; 4. a sealing gasket; 5. a transducer platen; 6. a screw; 7. a guide mechanism; 701. a reflective plate; 702. and (7) mounting frames.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

As shown in fig. 1-2, a measuring tube for an ultrasonic water meter includes a measuring tube body 1. One side outside the pipe wall of the measuring pipe body 1 is provided with a mounting groove 2, and an ultrasonic transducer 3 is arranged in the mounting groove 2 in a matching manner. Two sealing gaskets 4 are arranged between the ultrasonic transducer 3 and the mounting groove 2. The other end of the mounting groove 2 is provided with a transducer pressing plate 5. The transducer pressure plate 5 is fixedly connected with a screw 6. The transducer pressure plate 5 is fixedly connected with the measuring tube body 1 through a screw 6.

The inside of the measuring tube body 1 is provided with a guide mechanism 7. The guide mechanism 7 includes a reflection plate 701 made of 316 stainless steel material. The reflecting plate 701 faces the ultrasonic transducer 3 and forms an angle of 45 degrees with the horizontal direction. By the arrangement of the reflection plate 701, the ultrasonic wave emitted from the ultrasonic transducer 3 is changed into a horizontal direction by the reflection action of the reflection plate 701, so that the ultrasonic wave passes through the fluid and is transmitted to the receiver. And the fluid is penetrated in the horizontal direction, so that the ultrasonic waves can linearly penetrate through the measured fluid, and the measurement precision is higher.

Preferably, the reflection plate 701 is fixedly connected with a mounting frame 702. The mounting frame 702 is connected with the two sides of the pipe wall of the measuring pipe body 1 in an interference fit manner.

Claims (4)

1. The utility model provides an supersound water gauge is with surveying buret, is including measuring body (1), characterized by: the ultrasonic measuring device is characterized in that mounting grooves (2) are formed in two sides of the middle of the measuring pipe body (1), an ultrasonic transducer (3) is mounted in each mounting groove (2), and a guide mechanism (7) used for enabling ultrasonic signals to penetrate through a measured fluid and be sent to a receiver is further arranged in the measuring pipe body (1).

2. The measuring tube for an ultrasonic water meter according to claim 1, wherein: the guide mechanism (7) comprises two reflecting plates (701), the reflecting plates (701) are arranged right in front of the ultrasonic transducer (3), and the setting angle of the reflecting plates (701) forms 45 degrees with the horizontal plane.

3. The measuring tube for an ultrasonic water meter according to claim 2, wherein: reflecting plate (701) one side is provided with mounting bracket (702), mounting bracket (702) are connected with measurement body (1) pipe wall both sides interference fit.

4. The measuring tube for an ultrasonic water meter according to claim 1, wherein: sealing gaskets (4) are arranged on two sides of the mounting groove (2) and the ultrasonic transducer (3), a transducer pressing plate (5) is arranged outside the ultrasonic transducer (3), and the transducer pressing plate (5) is fixedly connected with the measuring tube body (1) through screws (6).