CN207379563U - A kind of gas flow surveying instrument - Google Patents
A kind of gas flow surveying instrument Download PDFInfo
- Publication number
- CN207379563U CN207379563U CN201721361679.2U CN201721361679U CN207379563U CN 207379563 U CN207379563 U CN 207379563U CN 201721361679 U CN201721361679 U CN 201721361679U CN 207379563 U CN207379563 U CN 207379563U
- Authority
- CN
- China
- Prior art keywords
- flow conditioner
- meshed
- round
- symmetrical round
- symmetrical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
The utility model is related to a kind of gas flow surveying instrument, by the symmetrical round-meshed flow conditioner installed at 10 times of caliber distances after at pipe-line direction change and followed by 10 times of caliber distances, the ultrasonic flowmeter of installation is formed.Port edge at the fluid passageway incoming of symmetrical round-meshed flow conditioner is designed as round shape or arc curve (2).Symmetrical round-meshed flow conditioner using flange form installation by the way of or punched-type installation mode.Symmetrical round-meshed flow conditioner at pipe-line direction change between ultrasonic flowmeter is installed, most short rectification flow development length before ultrasonic flowmeter is greatly shortened, and makes measurement accuracy higher.The runner port of symmetrical round-meshed flow conditioner round shape or arc curve, then can reduce the generation of high-frequency noise.Two kinds of mounting means of symmetrical round-meshed flow conditioner can flexibly be selected according to topographic features.
Description
Technical field
The utility model is related to measurement of gas flow field more particularly to a kind of ultrasonic flowmeter and it is symmetrically distributed with circular hole
The gas flow surveying instrument that is applied in combination of flow conditioner.
Background technology
Equipment used in gas flow measurement is volume flowmeter, and common volume flow is in respect of ultrasonic flowmeter, turbine
Flowmeter, orifice flowmeter, gas swirl flowmeter, Venturi nozzles flowmeter etc..At present, domestic several large-scale appendixs
Yard majority along road is using ultrasonic flowmeter.
Turbulent element influences measuring accuracy：The accuracy of ultrasonic flowmeter volume metering is easy to the shadow by installation effect
It rings, so-called installation effect causes pipeline flow field non-ideal distribution occur, so as to count precisely due to the variation of pipe-line
The phenomenon that measuring deviation.For ultrasonic flowmeter, can be obtained under conditions of fluid flow rate reaches abundant state of development more smart
True measurement result, but under conditions of practical application, due to installing the presence of effect, it is accurate to be extremely difficult to preferably measurement
Degree.
Influence of noise measuring accuracy：The operation principle of gas ultrasonic flowmeter is to measure flow using propagation time difference method,
Ultrasonic pulse is alternately received and dispatched in opposite directions using ultrasonic transducer, by detecting and calculating pulse fair current in gas medium
To measure the flow velocity of natural gas indirectly with the propagation time difference of adverse current, then calculate the flow of natural gas again by flow velocity.Therefore, it is
The propagation time of natural gas fair current and adverse current is obtained respectively, it is desirable to which the reception energy converter of flowmeter can be correctly detecting hair
Penetrate the ultrasonic pulse that energy converter is sent.Ultrasonic wave is the frequency range that a kind of frequency is higher than 20kHz, this this may result in energy converter
Detection unit can not correctly differentiate working pulse signal and noise, and then influence flowmeter measuring accuracy.
The content of the invention
The utility model problem of being solved is the deficiency for ultrasonic flowmeter used in existing natural gas line, is carried
Go out a kind of simple in structure, dependable performance, in-site installation is convenient, and the gas stream that can improve ultrasonic flowmeter measuring accuracy measures
Measure device.
To achieve these goals, the utility model adopts the following technical solution：
The symmetrical round-meshed flow conditioner of installation at 10 times of caliber distances after at the change of pipe-line direction,
Ultrasonic flowmeter is installed at 10 times of caliber distances again afterwards.The fluid passageway of symmetrical round-meshed flow conditioner is come
Port edge at stream is designed as round shape or arc curve (2).Flange may be employed in symmetrical round-meshed flow conditioner
Formula mounting means, the mounting means is preferable suitable for field conditions, and pipeline can be divided into two sections, will be symmetrically distributed with circular hole
Flow conditioner be put among two segment pipes with the axial fixed situation (3) of bolt.Symmetrical round-meshed flow adjustment
Punched-type mounting means may be employed in device, and the mounting means is poor suitable for field conditions, and pipeline is divided into two sections of workloads
It is larger and use punched on tube wall from the outside use the radially fixed symmetrical round-meshed flow conditioner of bolt situation
(4)。
The utility model has the following advantages due to taking above technical scheme：
1. symmetrical round-meshed flow conditioner is installed between ultrasonic flowmeter at line direction change can be with
The whirlpool and the asymmetry in flow field that elimination gas generates at line direction change, make the fluid state on its section divide again
Cloth, more stable with gas flowfield for more directly measuring natural gas volume flow with ultrasonic flowmeter, volume metering accuracy
The advantages of higher, and symmetrical round-meshed flow conditioner is installed after pipe-line variation, ultrasonic flowmeter it
42 times of caliber Distance Shorteneds when most short and straight pipe section length is not by by installing for upstream needed for preceding are 20 times of caliber distances.
2. the round shape or arc curve of port edge at the fluid passageway incoming of symmetrical round-meshed flow conditioner,
Fluid produced high-frequency noise when flowing through the acute angle of general flow conditioner runner port edge can be reduced, and then is improved super
The measuring accuracy of sonic flowmeter.
3. two kinds of mounting means of symmetrical round-meshed flow conditioner make the utility model more clever when in use
It lives and gears to actual circumstances, select different installation that can save workload according to different terrain conditions and reduce difficulty of construction.
Description of the drawings
Fig. 1 is the utility model overall structure diagram
Fig. 2 is symmetrical round-meshed flow conditioner front view in the utility model
Fig. 3 is the arcuation port edge schematic diagram of symmetrical round-meshed flow conditioner in the utility model
Fig. 4 is symmetrical round-meshed flow conditioner flange form scheme of installation in the utility model
Fig. 5 is symmetrical round-meshed flow conditioner punched-type scheme of installation in the utility model
Wherein：1. ultrasonic flowmeter；2. arc curve port edge；3. screw hole；4. bolt.
Specific embodiment
The specific implementation of the utility model is further described below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of gas flow surveying instrument, by 10 times of caliber distances after pipe-line direction change
The ultrasonic flowmeter located the symmetrical round-meshed flow conditioner of installation and installed followed by 10 times of caliber distances is formed.
Symmetrical round-meshed flow conditioner is installed in position after the pipe-line direction change at 10 times of caliber distances, can be with
The whirlpool and the asymmetry in flow field that elimination gas generates at pipe-line variation, make the fluid state on its section divide again
Cloth.The round shape or arc curve of port edge, can drop at the fluid passageway incoming of symmetrical round-meshed flow conditioner
Low fluid produced high-frequency noise when flowing through the acute angle of general flow conditioner runner port edge.
Symmetrical round-meshed flow conditioner flange form mounting means as shown in Figure 4, suitable for field conditions compared with
It is good, pipeline can be divided into two sections, symmetrical round-meshed flow conditioner is put among two segment pipes and uses bolt axle
To fixed situation.Symmetrical round-meshed flow conditioner punched-type mounting means as shown in Figure 5, suitable for place shape
Condition is poor, and it is larger and use and punch on pipeline from the outside radially fixed symmetrical point with bolt that pipeline is divided into two sections of workloads
The situation of the round-meshed flow conditioner of cloth.
Claims (1)
1. a kind of gas flow surveying instrument, it is characterised in that：After at the pipe-line direction change at 10 times of caliber distances
Symmetrical round-meshed flow conditioner is installed, ultrasonic flowmeter is installed at 10 times of caliber distances followed by；It will be symmetrical
Port edge at the fluid passageway incoming of round-meshed flow conditioner is designed as round shape or arc curve (2)；It is symmetrical
Round-meshed flow conditioner using flange form installation by the way of or punched-type installation mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721361679.2U CN207379563U (en) | 2017-10-23 | 2017-10-23 | A kind of gas flow surveying instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721361679.2U CN207379563U (en) | 2017-10-23 | 2017-10-23 | A kind of gas flow surveying instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207379563U true CN207379563U (en) | 2018-05-18 |
Family
ID=62336618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721361679.2U Expired - Fee Related CN207379563U (en) | 2017-10-23 | 2017-10-23 | A kind of gas flow surveying instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207379563U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426097A (en) * | 2019-08-07 | 2019-11-08 | 西安航天动力试验技术研究所 | A kind of big flow cryogenic propellant supply line flow conditioner |
| WO2022032622A1 (en) * | 2020-08-14 | 2022-02-17 | 西人马联合测控（泉州）科技有限公司 | Pipe flow rectification device and pipe |
| CN114440994A (en) * | 2021-12-20 | 2022-05-06 | 陕西航天动力高科技股份有限公司 | Gas ultrasonic flowmeter applied to large pipe diameter |
-
2017
- 2017-10-23 CN CN201721361679.2U patent/CN207379563U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426097A (en) * | 2019-08-07 | 2019-11-08 | 西安航天动力试验技术研究所 | A kind of big flow cryogenic propellant supply line flow conditioner |
| WO2022032622A1 (en) * | 2020-08-14 | 2022-02-17 | 西人马联合测控（泉州）科技有限公司 | Pipe flow rectification device and pipe |
| CN114440994A (en) * | 2021-12-20 | 2022-05-06 | 陕西航天动力高科技股份有限公司 | Gas ultrasonic flowmeter applied to large pipe diameter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105222831B (en) | A kind of gas-liquid two-phase flow metering device and method | |
| CN100538307C (en) | A kind of wind tunnel calibration method for large flow gas pipeline averaging velocity tube flowmeter | |
| CN207379563U (en) | A kind of gas flow surveying instrument | |
| CN201707077U (en) | Balance flow meter | |
| CN104251724A (en) | Fluid flow measuring apparatus | |
| CN109506724B (en) | Gas-liquid two-phase flow metering device and method | |
| CN202083421U (en) | Flow rate measuring orifice plate and collecting well flow rate measuring and throttling device | |
| CN208818268U (en) | A kind of measurement pipeline section of ultrasonic water meter | |
| CN201229354Y (en) | Fluid measurement device | |
| CN203824576U (en) | Fluid measuring device | |
| CN104007287A (en) | Pipeline fluid flow speed detection method based on ultrasonic waves | |
| CN201145593Y (en) | Multi-larynx type hole plate | |
| CN210834067U (en) | Fluid pipeline vibration characteristic testing device | |
| CN205352483U (en) | Gaseous ultrasonic wave flow measuring device of rectification type | |
| CN204177429U (en) | Fluid flow rate measurement apparatus | |
| CN201787975U (en) | Dual-bluff-body vortex flowmeter with built-in Venturi tube | |
| CN206945090U (en) | Contain the latus rectum ultrasonic meter structure for dividing chamber dividing plate | |
| CN204854845U (en) | Ultrasonic wave fluidflowmeter pipeline | |
| CN205861133U (en) | Venturi double difference pressure ultrasonic flow rate measurement apparatus | |
| CN201335843Y (en) | Double-throat-diameter venturi air-velocity measuring pipe | |
| CN205562077U (en) | Ultrasonic wave calorimeter pipeline and ultrasonic wave calorimeter | |
| CN107806913A (en) | Gas pipeline plurality of nozzle-type flow measuring probe | |
| CN203224261U (en) | Adjustable flange type flow measuring device | |
| CN204154321U (en) | A kind of constructional device being applied to fluid ultrasonic measurement | |
| CN209280059U (en) | A kind of ultrasonic type gas-liquid two-phase measuring device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180518 Termination date: 20181023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |