CN206192415U - Pitot tube with direction fin - Google Patents
Pitot tube with direction fin Download PDFInfo
- Publication number
- CN206192415U CN206192415U CN201621187362.7U CN201621187362U CN206192415U CN 206192415 U CN206192415 U CN 206192415U CN 201621187362 U CN201621187362 U CN 201621187362U CN 206192415 U CN206192415 U CN 206192415U
- Authority
- CN
- China
- Prior art keywords
- pitot tube
- tube
- guide fins
- type standard
- flue
- 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.)
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Links
- 239000000523 sample Substances 0.000 claims abstract description 15
- 239000000839 emulsion Substances 0.000 claims abstract description 11
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 230000003068 static effect Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
- Measuring Volume Flow (AREA)
Abstract
The utility model discloses a pitot tube with direction fin installs on the flue, including L type standard pitot tube, fixed plug, positioning screw, direction fin, emulsion tube and differential pressure gauge, L type standard pitot tube include pitot tube probe, total head output tube and aim at the handle, the total head output tube on be equipped with the direction fin, the total head output tube with aim at the handle and be connected with differential pressure gauge through the emulsion tube respectively, the survey hole of L type standard pitot tube by fixed plug screw in flue on, four positioning screws arranging by circumference of fixed plug be fixed in on the flue, the inside rectangle guide way that is on a parallel with pitot tube probe axis that is equipped with of fixed plug. The utility model discloses a pinpointing of L type standard pitot tube is realized to direction fin and rectangle guide way, ensures that the axis of pitot tube probe is parallel with pipeline center line, has reduced work load, has reduced human error, has improved the measurement accuracy.
Description
Technical field
The utility model is related in power plant's thermal test flue gas flow fields of measurement in flue, more particularly to a kind of with leading
To the Pitot tube of fin.
Background technology
In power plant's thermal test, Pitot tube is the key instrument that flue gas flow measurement is used.Its measurement process is：Measurement
Before according to flue cross section size, " Log-Linear " legal system is utilized to make scale.During measurement, a people lifts mark along measurement direction is flat
Chi, another person is responsible for pulling Pitot tube, when the measurement point under the mark that Pitot tube is drawn on scale, is read by the 3rd people
Take and record differential pressure value.The differential pressure value on each measuring point is according to said method write down successively and then flue gas flow rate is calculated, and then is tried to achieve
Flue gas flow.Pitot tube must be fixedly secured during measurement, and the axis that Pitot tube is popped one's head in must be made to be put down with flue center line
OK, this is generally available the alignment handle (or static pressure efferent duct) had on Pitot tube to be aligned.In actual measurement process, due to skin support
Pipe can be rotated freely, after pulling Pitot tube every time, be both needed to manually find accurately, and workload is big.Meanwhile, hand-held alignment handle can also be produced
Human error.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, there is provided a kind of Pitot tube with guide fins,
Being accurately positioned for Pitot tube probe is realized, its axis is remained parallel with pipe centerline, without people in measurement process
Work is found accurately, reduces workload, reduces human error, improves measurement accuracy.
To achieve these goals, the utility model uses following technical proposals：
A kind of Pitot tube with guide fins, is installed on flue, including L-type standard pitot tube, fixed plug, positioning
Screw rod, guide fins, emulsion tube and differential pressure gauge, described L-type standard pitot tube include Pitot tube probe, total head efferent duct and right
Quasi- handle, described total head efferent duct is provided with guide fins；Described total head efferent duct and alignment handle respectively by emulsion tube with
Differential pressure gauge is connected；Described L-type standard pitot tube is screwed on the gaging hole of flue by fixing plug, and described fixed plug is by circumference
Four positioning screws of arrangement are fixed on flue；The square parallel to Pitot tube probe axis is provided with inside described fixed plug
Shape gathering sill.
Described guide fins are welded on L-type standard pitot tube.
In described guide fins insertion rectangle gathering sill.
The diameter parallel that described guide fins are popped one's head in Pitot tube, guide fins ensure L-type mark by rectangle gathering sill
Quasi- Pitot tube is not glanced off.
The section of described fixed plug is I-shaped structure.
Application method of the present utility model：
L-type standard pitot tube is threaded on gaging hole by fixed plug, and be torqued-up to the rectangle gathering sill of fixed plug with
Flue centerline parallel, and make conversely, then screw 4 positioning screws circumferentially to the wall of flue with flue gas flow direction
Fixed plug firm position, then pulls L-type standard pitot tube to specified location, and guide fins ensure skin by rectangle gathering sill
The axis of trustship probe and the centerline parallel of flue, static pressure and total head are caused into differential pressure gauge by emulsion tube carries out differential pressure survey
Amount.Without being positioned by the alignment handle of L-type standard pitot tube in measurement process, alignment handle is only served and gripped or pressure transmission
Effect.
The beneficial effects of the utility model：
Being accurately positioned for L-type standard pitot tube is realized by guide fins and rectangle gathering sill, it is ensured that Pitot tube probe
Axis is parallel with pipe centerline, reduces workload, reduces human error, improves measurement accuracy.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is A-A sectional views of the present utility model；
Wherein, 1- gaging holes, 2- fixation plugs, 3-L type standard pitot tubes, 4- guide fins, 5- alignment handles, 6- emulsion tubes,
7- differential pressure gauges, 8- total head efferent ducts, 9- positioning screws, 10- flues, 11- Pitot tubes probe.
Specific embodiment
The utility model is described in detail below in conjunction with the accompanying drawings：
As depicted in figs. 1 and 2, a kind of Pitot tube with guide fins, is installed on flue, including L-type standard skin support
Pipe 3, fixed plug 2, positioning screw 9, guide fins 4, emulsion tube 6 and differential pressure gauge 7, described L-type standard pitot tube 3 include skin
Trustship probe 11, total head efferent duct 8 and alignment handle 5, described total head efferent duct 8 are provided with guide fins 4；Described total head is defeated
Outlet pipe 8 and alignment handle 5 are connected by emulsion tube 6 with differential pressure gauge 7 respectively；Described L-type standard pitot tube 3 is by the stifled rotation of fixed silk 2
Enter on the gaging hole 1 of flue 10, described fixed plug 2 is fixed on flue 10 by four positioning screws 9 circumferentially, is passed through
The fixed plug 2 of positioning screw 9 pairs carries out fastening positioning, is provided with inside described fixed plug 2 parallel to Pitot tube 11 axles of probe
The rectangle gathering sill of line.
Described guide fins 4 are welded on L-type standard pitot tube 3.
In the described insertion rectangle gathering sill of guide fins 4.
The diameter parallel of described guide fins 4 and Pitot tube probe 11, guide fins 4 ensure L by rectangle gathering sill
Type standard pitot tube 3 is not glanced off.
The section of described fixed plug 2 is I-shaped structure.
Application method of the present utility model：
L-type standard pitot tube 3 is passed through into fixed plug 2 to be threaded on gaging hole 1, and is torqued-up to the rectangle guiding of fixed plug 2
Groove and the centerline parallel of flue 10, and with flue gas flow direction conversely, then screwing 4 positioning screws 9 circumferentially to flue 10
Wall, make to fix the firm position of plug 2, then pull L-type standard pitot tube 3 to specified location, guide fins 4 pass through rectangle
Gathering sill ensures the axis and the centerline parallel of flue 10 of Pitot tube probe 11, is caused static pressure and total head by emulsion tube 6
Differential pressure gauge 7 carries out differential pressure measurement.Need not be positioned by the alignment handle 5 of L-type standard pitot tube 3 in measurement process, be directed at handle 5
Only serve the effect of gripping or pressure transmission.
It is not new to this practicality although above-mentioned be described with reference to accompanying drawing to specific embodiment of the present utility model
The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Various modifications or deform still in protection model of the present utility model that field technique personnel make by need not paying creative work
Within enclosing.
Claims (5)
1. a kind of Pitot tube with guide fins, is installed on flue, it is characterised in that including L-type standard pitot tube, fixation
Plug, positioning screw, guide fins, emulsion tube and differential pressure gauge, described L-type standard pitot tube include Pitot tube probe, total head
Efferent duct and alignment handle, described total head efferent duct are provided with guide fins；Described total head efferent duct and alignment handle leads to respectively
Emulsion tube is crossed to be connected with differential pressure gauge；Described L-type standard pitot tube is screwed on the gaging hole of flue by fixing plug, described fixation
Plug is fixed on flue by four positioning screws circumferentially；It is provided with inside described fixed plug and is visited parallel to Pitot tube
The rectangle gathering sill of head axis.
2. a kind of Pitot tube with guide fins as claimed in claim 1, it is characterised in that described guide fins welding
On L-type standard pitot tube.
3. a kind of Pitot tube with guide fins as claimed in claim 2, it is characterised in that described guide fins insertion
In rectangle gathering sill.
4. a kind of Pitot tube with guide fins as claimed in claim 2, it is characterised in that described guide fins and skin
The diameter parallel of trustship probe.
5. a kind of Pitot tube with guide fins as claimed in claim 1, it is characterised in that described fixed plug is cutd open
Face is I-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621187362.7U CN206192415U (en) | 2016-11-04 | 2016-11-04 | Pitot tube with direction fin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621187362.7U CN206192415U (en) | 2016-11-04 | 2016-11-04 | Pitot tube with direction fin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206192415U true CN206192415U (en) | 2017-05-24 |
Family
ID=58735018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621187362.7U Active CN206192415U (en) | 2016-11-04 | 2016-11-04 | Pitot tube with direction fin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206192415U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525622A (en) * | 2017-09-19 | 2017-12-29 | 中国水利水电科学研究院 | L-type Pitot tube stationary positioned device |
-
2016
- 2016-11-04 CN CN201621187362.7U patent/CN206192415U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525622A (en) * | 2017-09-19 | 2017-12-29 | 中国水利水电科学研究院 | L-type Pitot tube stationary positioned device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: SHANDONG ELECTRIC POWER Research Institute Patentee after: SHANDONG ZHONGSHI YITONG GROUP Co.,Ltd. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee before: SHANDONG ELECTRIC POWER Research Institute Patentee before: SHANDONG ZHONGSHI YITONG GROUP Co.,Ltd. Patentee before: State Grid Corporation of China |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220210 Address after: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee after: ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER Co. Patentee after: SHANDONG ZHONGSHI YITONG GROUP Co.,Ltd. Patentee after: STATE GRID CORPORATION OF CHINA Address before: 250003 No. 2000, Wang Yue Road, Shizhong District, Ji'nan, Shandong Patentee before: SHANDONG ELECTRIC POWER Research Institute Patentee before: SHANDONG ZHONGSHI YITONG GROUP Co.,Ltd. Patentee before: STATE GRID CORPORATION OF CHINA |