CN220136422U

CN220136422U - Medium-low pressure ultrasonic flowmeter

Info

Publication number: CN220136422U
Application number: CN202321329849.4U
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Mezolen Instrument Changzhou Co ltd
Current assignee: Mezolen Instrument Changzhou Co ltd
Priority date: 2023-05-29
Filing date: 2023-05-29
Publication date: 2023-12-05
Anticipated expiration: 2033-05-29

Abstract

The utility model relates to the technical field of flow meters, in particular to a medium-low pressure ultrasonic flow meter which comprises a junction box fixed above a measuring nipple and a gas meter head arranged above the junction box, wherein a rotating mechanism is connected between the gas meter head and the junction box. The front side and the rear side of the measuring nipple are at least provided with a pair of coaxially distributed sleeve connecting barrels, the sleeve connecting barrels are communicated with the inside of the measuring nipple, ultrasonic probes are inserted into the sleeve connecting barrels, a section of hollow threading pipe is connected between each sleeve connecting barrel and the junction box, a cable of each ultrasonic probe is arranged in the threading pipe, and the tail end of the cable penetrates through the junction box and is electrically connected with the gas meter head. The medium-low pressure ultrasonic flowmeter is suitable for DN 25-DN 300 caliber pipelines, has high measurement accuracy, convenient reading and long service life, and can effectively solve the technical problems that cables in the existing ultrasonic gas meter are easy to wind and wear, and a gas meter head cannot rotate and is inconvenient to read.

Description

Medium-low pressure ultrasonic flowmeter

Technical Field

The utility model relates to the technical field of flowmeters, in particular to a medium-low pressure ultrasonic flowmeter.

Background

In recent years, natural gas gradually goes into thousands of households, natural gas is one of the main bodies of modern clean energy, natural gas has become an irreversible trend to replace coal gas, and meanwhile, the gas metering industry is also rapidly developing.

The diaphragm gas meter is widely applied to the field of gas metering as a traditional gas meter, but is easily influenced by medium, temperature, pressure and the like in a pipeline due to the complex structure, so that the measurement accuracy is low. The electronic gas meter has the advantages that although the reliability in metering is improved, the problem of manual meter reading is solved, the electronic gas meter is used as an electronic product, when a complex medium is encountered, the accuracy of metering reading can be greatly influenced, and the fluctuation and the temperature change of pipeline pressure are also uncontrollable factors, so that the service life of an electronic gas meter product is greatly influenced.

The ultrasonic gas meter is a new generation intelligent electronic metering device, which mainly utilizes a time difference method to accurately meter reading, simultaneously remotely controls and electronically displays, can save labor force, and can not flexibly rotate to adjust the meter head to turn according to actual use requirements when the traditional medium-low pressure ultrasonic flowmeter is installed on a gas pipeline to measure gas flow, so that the measured value is inconvenient to read, and an electrical connecting wire in the device is usually exposed, is easy to wind and drag in the use process, and has the defects of line breakage and short circuit, thereby affecting the measuring precision and the service life of the flowmeter.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a medium-low pressure ultrasonic flowmeter, which can effectively solve the technical problems that cables in the existing ultrasonic gas meter are easy to wind and wear, and a gas meter head cannot rotate and is inconvenient to read.

In order to achieve the technical purpose, the utility model adopts the following technical scheme:

in one technical scheme of the utility model, a medium-low pressure ultrasonic flowmeter is provided, which comprises a junction box fixed above a measuring nipple and a gas meter head arranged above the junction box, wherein a rotating mechanism is connected between the gas meter head and the junction box;

the measuring nipple is characterized in that at least a pair of coaxially distributed sleeve barrels are arranged on the front side and the rear side of the measuring nipple, the sleeve barrels are communicated with the inside of the measuring nipple, ultrasonic probes are inserted into the sleeve barrels, a section of hollow threading pipe is connected between each sleeve barrel and the junction box, a cable of each ultrasonic probe is arranged in the threading pipe, and the tail end of the cable penetrates through the junction box and is electrically connected with the gas meter head.

By adopting the technical scheme, the gas meter head is convenient to rotate within a certain angle range by arranging the rotating mechanism between the gas meter head and the junction box, and the gas meter head can be conveniently installed in a field pipeline and can be conveniently read according to the steering of the personnel position adjustment screen. The cable of the ultrasonic probe is arranged in the threading pipe in a penetrating way, so that the flexible wires are prevented from being connected to cause dragging, and meanwhile, the inner cavity of the junction box provides space for the switching of the junction terminal.

In some possible embodiments, the measuring nipple is provided with a temperature sensor and a pressure sensor. The temperature sensor and the pressure sensor are used for monitoring working conditions such as temperature and pressure of the measuring nipple in real time.

In some possible embodiments, the rotating mechanism comprises a hollow torque hinge and an annular clamping seat, the top end of the torque hinge is connected with the gas meter head, the bottom end of the torque hinge is connected with the annular clamping seat in an inserting mode, and the annular clamping seat is fixedly connected with the top of the junction box. The gas meter head can rotate in a certain angle range through the torque hinge so as to adjust the angle of the screen, and the gas meter head is convenient to read when being installed in a field pipeline.

In some possible embodiments, the torque hinge is externally sleeved with a hollow sleeve, and the upper end and the lower end of the sleeve are respectively connected with the gas meter head and the annular clamping seat so as to protect the torque hinge and play a role in supporting and connecting.

In some possible embodiments, the axial included angle between the sleeve and the measuring nipple is 30-60 degrees. When the ultrasonic probes are arranged in the sleeve joint barrel, a pair of ultrasonic probes on the front side and the rear side of the measuring nipple form correlation, and the tail ends of the ultrasonic probes are respectively inserted into gas in the measuring nipple, so that the gas flow is conveniently measured by a time difference method.

In some possible embodiments, the gas meter head is provided with a plurality of groups of aviation plugs for connecting with electrical equipment such as a temperature and pressure sensor, an IC smart card control and a power supply.

In some possible embodiments, a rotatable antenna is connected to the gas meter head for enhancing communication connection.

In some possible embodiments, the two axial ends of the measuring nipple are respectively provided with a flange plate for connecting with a fuel gas conveying pipeline.

The medium-low pressure ultrasonic flowmeter provided by the utility model has the following beneficial effects:

the medium-low pressure ultrasonic flowmeter of the utility model can accurately measure and read through a time difference method, can be suitable for pipelines with apertures of DN 25-DN 300, can select monophonic or biphonic for accurate measurement, has the advantages of high precision, high reliability, high safety, wide measuring range ratio, good durability, small volume and the like, and can be widely applied to gas measurement of residential users and industrial and commercial users. According to the utility model, through arranging the threading pipe, the cable of the ultrasonic probe is threaded inside the threading pipe, so that dragging caused by flexible wire connection is prevented, and meanwhile, a space is provided for the switching of the wiring terminal by the inner cavity of the wiring box; the rotating mechanism is arranged, the torque hinge is used for facilitating the rotation of the gas meter head in a certain angle range, and the measurement and reading are facilitated; by providing a pressure sensor and a temperature sensor, the temperature and pressure conditions inside the pipeline can be monitored at any time.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic perspective view of a medium-low pressure ultrasonic flow meter of the present utility model;

FIG. 2 is another perspective view of the ultrasonic flow meter of the present utility model;

FIG. 3 is a rear view of the low-and-medium pressure ultrasonic flow meter of the present utility model;

FIG. 4 is an enlarged view of a portion of FIG. 3 taken along line "A-A";

fig. 5 is a schematic view showing a rotating mechanism and a junction box in a disassembled structure in the present utility model.

The reference numerals in the figures illustrate: 1. measuring the nipple; 2. a junction box; 3. a gas meter head; 4. a rotating mechanism; 41. a torque hinge; 42. an annular clamping seat; 43. a sleeve; 5. an ultrasonic probe; 6. a threading tube; 7. a temperature sensor; 8. a pressure sensor; 9. aviation plug; 10. an antenna; 11. a sleeve joint cylinder; 12. and a flange plate.

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present specification, by describing the embodiments of the present utility model with specific examples. While the description of the utility model will be described in connection with the preferred embodiments, it is not intended to limit the inventive features to the implementation.

In the description of the present embodiment, it should be noted that, directions or positional relationships indicated by terms "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "front", "rear", etc., are directions or positional relationships based on those shown in the drawings, or directions or positional relationships in which the inventive product is conventionally put in use, are merely for convenience in describing the present utility model and for simplifying the description, and are not indicative or implying that the apparatus or element referred to has a specific direction, is configured and operated in a specific direction, and therefore, should not be construed as limiting the present utility model.

In the description of the present embodiment, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present embodiment can be understood in a specific case by those of ordinary skill in the art.

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings.

As shown in fig. 1 to 3, in one embodiment of the present utility model, there is provided a medium-low pressure ultrasonic flow meter, which includes a junction box 2 fixed above a measuring nipple 1 and a gas meter head 3 provided above the junction box 2, and a rotation mechanism 4 is connected between the gas meter head 3 and the junction box 2.

Referring to fig. 4 and 5, the rotating mechanism 4 comprises a hollow torque hinge 41 and an annular clamping seat 42, the top end of the torque hinge 41 is connected with the gas meter head 3, the bottom end of the torque hinge 41 is connected with the annular clamping seat 42 in an inserting mode, and the annular clamping seat 42 is fixedly connected with the top of the junction box 2. The outside of the torque hinge 41 is sleeved with a hollow sleeve 43, and the upper end and the lower end of the sleeve 43 are respectively connected with the gas meter head 3 and the annular clamping seat 42. The gas meter head 3 can rotate within a certain angle range through the torque hinge 41 so as to adjust the angle of the screen, and when the flowmeter is installed on a field pipeline, the screen can be adjusted according to the position of a person to steer so as to be convenient for reading.

Referring to fig. 1 and 2, at least a pair of coaxially distributed sleeve barrels 11 are arranged on the front side and the rear side of the measuring nipple 1, the sleeve barrels 11 are communicated with the inside of the measuring nipple 1, and an axial included angle between the sleeve barrels 11 and the measuring nipple 1 is 30-60 degrees, preferably 45 degrees or 60 degrees. The ultrasonic probes 5 are inserted into the sleeve 11, the ultrasonic probes 5 on the front side and the rear side of the measuring nipple 1 form opposite injection, and the tail ends of the ultrasonic probes 5 are respectively inserted into the gas in the measuring nipple 1, so that the gas flow is conveniently measured by a time difference method.

Referring to fig. 2 and 4, a hollow threading pipe 6 is connected between each sleeve 11 and the junction box 2, a cable line of the ultrasonic probe 5 is arranged in the threading pipe 6, pulling and pulling caused by flexible wire connection are prevented, the tail end of the cable line passes through the junction box 2 and is electrically connected with the gas meter head 3, and a space can be provided for switching of the junction terminal by an inner cavity of the junction box 2.

Referring to fig. 1 and 2, a temperature sensor 7 and a pressure sensor 8 are arranged on the measuring nipple 1, and the temperature sensor 7 and the pressure sensor 8 are respectively positioned on two sides of the junction box 2 and are respectively electrically connected with the gas meter head 3. The temperature sensor 7 and the pressure sensor 8 adopt a temperature transmitter and a pressure transmitter, and can measure the working conditions of the nipple 1, such as temperature, pressure and the like, for real-time monitoring.

Referring to fig. 1 and 3, the gas meter 3 is provided with four sets of aviation plugs 9 for connecting with electrical equipment such as a temperature and pressure sensor, an IC smart card control and a power supply. The gas meter head 3 adopts a square meter head similar to the shape of a television. A rotatable antenna 10 is also connected to the rear of the gas meter head 3 for enhancing the communication connection. The two axial ends of the measuring nipple 1 are respectively provided with a flange plate 12 for connecting a fuel gas conveying pipeline.

The housings of the junction box 2, the gas meter head 3, the rotating mechanism 4, the threading pipe 6 and other parts are made of materials with high corrosion resistance, high temperature resistance and high pressure resistance, so that the service life of the product can be greatly prolonged while the safety is ensured.

While the utility model has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that the foregoing is a further detailed description of the utility model with reference to specific embodiments, and it is not intended to limit the practice of the utility model to those descriptions. Therefore, all technical solutions which are available to the person skilled in the art based on the prior art through logic analysis, reasoning or limited experiments according to the inventive concept are within the scope of protection defined by the claims.

Claims

1. The medium-low pressure ultrasonic flowmeter is characterized by comprising a junction box (2) fixed above a measuring nipple (1) and a gas meter head (3) arranged above the junction box (2), wherein a rotating mechanism (4) is connected between the gas meter head (3) and the junction box (2);

the utility model discloses a gas meter head, including measuring nipple joint (1), a pair of coaxial distribution's a section of thick bamboo (11) that cup joints is provided with at least in the front and back both sides, cup joints a section of thick bamboo (11) and measures nipple joint (1) inside and be linked together, cup joint a section of thick bamboo (11) inside grafting has ultrasonic probe (5), all is connected with one section hollow threading pipe (6) between a section of thick bamboo (11) and terminal box (2), in threading pipe (6) were located to the cable conductor of ultrasonic probe (5), the cable conductor end passed terminal box (2) and is connected with gas meter head (3) electricity.

2. The medium-low pressure ultrasonic flowmeter according to claim 1, wherein the measuring nipple (1) is provided with a temperature sensor (7) and a pressure sensor (8).

3. The medium-low pressure ultrasonic flowmeter according to claim 1, wherein the rotating mechanism (4) comprises a hollow torque hinge (41) and an annular clamping seat (42), the top end of the torque hinge (41) is connected with the gas meter head (3), the bottom end of the torque hinge (41) is connected with the annular clamping seat (42) in an inserting mode, and the annular clamping seat (42) is fixedly connected with the top of the junction box (2).

4. A medium-low pressure ultrasonic flowmeter according to claim 3, wherein the torque hinge (41) is externally sleeved with a hollow sleeve (43), and the upper and lower ends of the sleeve (43) are respectively connected with the gas meter head (3) and the annular clamping seat (42).

5. The medium-low pressure ultrasonic flowmeter according to claim 1, wherein the axial included angle between the sleeve (11) and the measuring nipple (1) is 30-60 degrees.

6. A medium-low pressure ultrasonic flowmeter according to claim 1, characterized in that said gas meter head (3) is provided with a plurality of sets of aviation plugs (9).

7. A medium-low pressure ultrasonic flowmeter according to claim 1, characterized in that said gas meter head (3) is connected with a rotatable antenna (10).

8. The medium-low pressure ultrasonic flowmeter of claim 1, wherein the measuring nipple (1) is provided with flanges (12) at its axial ends.