CN208140200U - A kind of measurement pipe structure for ultrasonic wave gas meter - Google Patents
A kind of measurement pipe structure for ultrasonic wave gas meter Download PDFInfo
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- CN208140200U CN208140200U CN201820620854.3U CN201820620854U CN208140200U CN 208140200 U CN208140200 U CN 208140200U CN 201820620854 U CN201820620854 U CN 201820620854U CN 208140200 U CN208140200 U CN 208140200U
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Abstract
The utility model relates to a kind of measurement pipe structures for ultrasonic wave gas meter, belong to gas dosing equipment technical field.The measurement pipe structure for ultrasonic wave gas meter of the utility model design is used in ultrasonic gas meter, due to carrying out special designing to structure, current stabilization is carried out by the gas cabin that gas meter both ends are designed, so that the gas flow rate even of measuring section, to improve the accuracy of gas meter flow measurement.And gas meter is Z-type structure, and compared to U-shaped tube body, the gap of sensor mounting location can reduce the interference of air-flow, to increase the stability of measurement result.Further, since the dome structure of special designing, can optimize air flow condition, the Stability and veracity of measurement result is further promoted.
Description
Technical field
The utility model relates to a kind of measurement pipe structures for ultrasonic wave gas meter, belong to measuring equipment technical field.
Background technique
In recent years, China's natural gas industry development is rapid, and annual consumption rises year by year, according to related data it is known that
China's natural gas total quantity consumed was 173 billion cubic meters at 1994, and increased 1076 billion cubic meters by 2010, and
And annual growth is also very high, by the end of 2016, this data was doubled, and had had reached 2058 billion cubic meters.Though
So the yield of natural gas and consumption speedup are slowed down in recent years, but market is still very huge.In addition, with national industry
The adjustment of energy resource structure, natural gas belong to clean energy resource, and the accounting in the energy resource structure of country can also gradually increase, however I
The existing resident's natural gas clearing form of state is relatively also very old, is not only unfavorable for the statistics and resource allocation of country data,
Also the use of inconvenient resident's progress natural gas resource simultaneously.
Since 2005, the combustion gas popularity rate in city just improved year by year, had just had reached 91.4% by 2009,
After " 12th Five-Year Plan ", the combustion gas popularity rate in city has reached 94% or more, and the combustion gas popularity rate at county town has reached 65% or more, uses
Gas family has reached 200,000,000 families.Related data shows the market scale of China's diaphragm gas meter at tens million of or so.
2016, Shanghai City had begun the central three meter transcribing of " water, electricity, gas ", utilized original ammeter automatic centralized reading
Channel, by the intellectual water meter of different communication structure, after the data acquisition of gas meter, by power line carrier or short-distance wireless etc.
Mode is uploaded to power concentrator, transfers data to background data server using original power information acquisition system.From
And realize the convenience of numerous residents " meter reading not house lead in, pay the community Bu Chu ".And three tables and four table collection in the whole country are copied
It will be the important development direction of future digitalization society.Since traditional membrane type gas meter is the gas carried out using mechanical structure
The measurement of flow, be difficult to carry out it is intelligentized integrated, therefore be also required to it is more accurate, efficiently, stable New Generation of Intelligent gas
Table replaces traditional membrane type gas meter.
Summary of the invention
The purpose of this utility model is to propose a kind of measurement pipe structure for ultrasonic wave gas meter, uses ultrasound
Measure the mode of gas flow rate, accurately to measure natural gas/coal gas flow velocity inside pipeline, with some Internet of Things and channel radio
After letter technology combines, the collection that can very easily carry out gas meter is copied.
The utility model proposes the measurement pipe structure for ultrasonic wave gas meter, be machined on pipe structure air inlet,
Venthole, Z-type measuring section, sensor construction section, port gas cabin and radome fairing；Described port gas freight space is in Z-type measuring section
Both ends, air inlet and venthole are machined on Z-type measuring section, and the sensor construction section is located at Z-type measuring section, sensor peace
It fills section and Z-type measuring section is in the tapered connection of 30-60 degree；It is used for mounting ultrasonic sensor inside the sensor construction section,
The outside of sensor construction section is equipped with sealing bolt, and there are wire guides at sealing bolt center；The end in the port gas cabin is set
There is gas hatchcover, gas hatchcover is equipped with gas hatchcover nut；The radome fairing is placed in the air inlet side of Z-type measuring section, radome fairing
By the different concentric ring of multiple diameters and radial support board group at the different concentric ring of multiple diameters is opposite by radial support plate
It is coaxial fixed.
The utility model proposes the measurement pipe structure for ultrasonic wave gas meter can by the design in both ends cabin
Preferable rectification effect is realized to gas, so that pipeline flow field is highly stable, clearly to the promotion of measurement effect.Sensing
The angle of device center line and measuring section center line is between 30 degree to 60 degree.By optimization and reasonable Arrangement sensor angle and
Position can realize more accurately estimation to measuring section gas flow rate, reduce Reynolds number variation and measure bring shadow to flow velocity
It rings, thus modified computing method when simplifying flow relocity calculation, so that the calculating of gas meter flow is more succinct efficient.It being capable of very big journey
The fluid state of the optimization measurement straight pipe of degree, reduces the influence of bias current and turbulent flow for measurement.The tube body knot of the utility model
Structure can be optimized fluid stability, be optimized the linearity of measurement result, reduce measurement result by experiment and the verifying of emulation
Standard deviation.
Detailed description of the invention
Fig. 1 be the utility model proposes for ultrasonic wave gas meter Z-type measurement pipe structure structural schematic diagram.
Fig. 2 is the cross-sectional view of pipe structure shown in FIG. 1.
Fig. 3 is the structural schematic diagram for the radome fairing installed in pipe structure shown in FIG. 1.
Fig. 4 be the utility model relates to ultrasonic wave gas meter working principle diagram.
In Fig. 1-Fig. 4,1 is air inlet, and 2 be Z-type measuring section, and 3 be sensor construction section, and 4 be sealing bolt, and 5 be port
Gas cabin, 6 be gas hatchcover, and 7 be gas hatchcover reinforcing rib, and 8 be gas hatchcover nut, and 9 be gas meter bottom surface support base, and 10 be that gas cabin is reinforced
Muscle, 11 be measuring section reinforcing rib, and 12 be fairlead, and 13 be radome fairing, and 14 be concentric ring, and 15 be radial support plate, and 16 be outlet
Hole.
Specific embodiment
The utility model proposes the measurement pipe structure for ultrasonic wave gas meter, structure is as shown in Figures 1 and 2,
Air inlet 1, venthole 16, Z-type measuring section 2, sensor construction section 3 and port gas cabin 5 are machined on pipe structure.Port gas cabin
5 are located at the both ends of Z-type measuring section 2, are machined with air inlet 1 and venthole 16 on Z-type measuring section 2.Sensor construction section 3 is located at Z
Type measuring section 2, sensor construction section 3 and Z-type measuring section 2 are in the tapered connection of 30-60 degree.The inside of sensor construction section 3 is used for
The outside of mounting ultrasonic sensor (not shown), sensor construction section 3 is equipped with sealing bolt 4, the center of sealing bolt 4
There are fairleads 12.The port gas cabin 5 is equipped with gas cabin reinforcing rib 10, and the end in port gas cabin 5 is equipped with gas hatchcover 6, gas
Hatchcover 6 is equipped with the gentle hatchcover nut 8 of gas hatchcover reinforcing rib 7.Radome fairing 13 is placed in the air inlet side of Z-type measuring section, rectification
The structure of cover 13 is as shown in figure 3, radome fairing 13 is an overall structure, by the different concentric ring 14 of multiple diameters and radial support
Plate 15 forms, and the different concentric ring 14 of multiple diameters is fixed by 15 confronting coaxial of radial support plate.Radome fairing 13 can be installed
The upstream of straight pipe is measured in Fig. 3, which designates position in Fig. 3.
Below in conjunction with attached drawing, use of the utility model for the Z-type measurement pipe structure of ultrasonic wave gas meter is discussed in detail
Process：
As shown in Figure 1, the both ends of the two-channel tube body are gas cabin 5, centre is measuring section 2, and air inlet 1 is connected with gas cabin 5,
And measuring section stretches out certain length in gas cabin, to guarantee that gas is introduced into the deceleration of gas cabin, current stabilization, subsequently into measurement
Section 2.The outer wall in gas cabin is equipped with reinforcing rib 10.The both ends in gas cabin are equipped with gas hatchcover 6, and gas hatchcover is equipped with reinforcing rib 7, on gas hatchcover
Gas hatchcover nut 8 be easy for the installation of gas hatchcover 6.Gas ultrasound wave sensor, sensing are installed inside sensor construction section 3
The conducting wire of device is connected to external processing measuring circuit by sensor lead hole 12.Sensor sealing bolt 4 be for the ease of
Sensor is installed, and plays the role of that internal gas is isolated.Gas meter pedestal 9 is only used for supporting gas meter in vertical direction, just
In placement in the horizontal plane.Measuring section reinforcing rib 11 is the intensity that can increase gas cabin Yu measuring section junction, radome fairing 13
It is mounted on the upstream portion of measurement straight pipe.
The utility model measures flow velocity using pipeline configuration shown in FIG. 1 and ultrasonic wave time difference method measuring principle, goes forward side by side
And calculate gas flow.Wherein the central axis of center sensor axis and measuring section is intersection, as shown in Figure 4.This reality
With the novel structure for having related generally to Z-type tube body, the current stabilization method of both ends gas cabin formula and the radome fairing knot of grid concentric-ring pattern
Structure increases the stability and accuracy of measurement to realize gas current stabilization, to obtain better measurement result.Fig. 4 is Z-type
The measuring principle of tube body, wherein the axial line of the axial line of sensor and measuring section intersects, and is a certain included angle.The stream of gas
The time of the dynamic ultrasonic signal that will lead to the other side that two sensors receive is different, and size and the gas flow rate of the time difference is in
It is positively correlated.The gas flow rate inside pipeline can be measured according to the principle.
The utility model is used for the radome fairing of ultrasonic gas rectification, has used concentric circles lattice-shaped structure, length is not
It is fixed, various sizes of radome fairing can be designed according to use condition.Radome fairing may be mounted at the upstream of measurement straight pipe, use
In optimization airflow fluid state, reducing bias current and turbulent flow influences measurement bring.
The utility model in prior art without radome fairing compared with, to measurement pipeline flow field calculate, as the result is shown
Under different in flow rate, radome fairing suffers from good effect of optimization for the distribution of fluids within pipes.It is being fitted without radome fairing
Tube body, vulnerable to the influence of pipe structure serious bias current, such as the nozzle of installation site, bend pipe occur for fluid, and survey
Special irregular structure inside scale etc..And after radome fairing is installed, fluid cross-section distributes very evenly, upstream tube
Body structure bring change of fluid is basically eliminated, and helps to improve measurement performance.
Claims (1)
1. a kind of measurement pipe structure for ultrasonic wave gas meter, it is characterised in that be machined with air inlet, outlet on pipe structure
Hole, Z-type measuring section, sensor construction section and port gas cabin；Described port gas freight space is in the both ends of Z-type measuring section, Z-type measurement
Air inlet and venthole are machined in section, the sensor construction section is located at Z-type measuring section, and sensor construction section and Z-type are surveyed
Measuring section is in the tapered connection of 30-60 degree；Mounting ultrasonic sensor, sensor construction section are used for inside the sensor construction section
Outside be equipped with sealing bolt, there are wire guides at sealing bolt center；The end in the port gas cabin is equipped with gas hatchcover, gas cabin
It covers and is equipped with gas hatchcover nut, radome fairing is placed in the air inlet side of Z-type measuring section, and radome fairing is by different concentric of multiple diameters
Ring and radial support board group are at the different concentric ring of multiple diameters is fixed by radial support plate confronting coaxial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820620854.3U CN208140200U (en) | 2018-04-27 | 2018-04-27 | A kind of measurement pipe structure for ultrasonic wave gas meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820620854.3U CN208140200U (en) | 2018-04-27 | 2018-04-27 | A kind of measurement pipe structure for ultrasonic wave gas meter |
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| CN208140200U true CN208140200U (en) | 2018-11-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489563A (en) * | 2018-04-27 | 2018-09-04 | 清华大学 | A kind of measurement pipe structure for ultrasonic wave gas meter |
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2018
- 2018-04-27 CN CN201820620854.3U patent/CN208140200U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489563A (en) * | 2018-04-27 | 2018-09-04 | 清华大学 | A kind of measurement pipe structure for ultrasonic wave gas meter |
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