CN109580982A - A kind of fired power generating unit band powder air-flow block-proof type speed-measuring method - Google Patents
A kind of fired power generating unit band powder air-flow block-proof type speed-measuring method Download PDFInfo
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- CN109580982A CN109580982A CN201811431563.0A CN201811431563A CN109580982A CN 109580982 A CN109580982 A CN 109580982A CN 201811431563 A CN201811431563 A CN 201811431563A CN 109580982 A CN109580982 A CN 109580982A
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- ram
- tube
- blowpipes
- air pipe
- pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/14—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring differences of pressure in the fluid
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Volume Flow (AREA)
Abstract
The present invention relates to a kind of fired power generating unit band powder air-flow block-proof type speed-measuring methods, static tube is connected to an anti-blowpipe with the lower end of ram-air pipe being located in test pipeline, the upper end that two anti-blowpipes are located at outside test pipeline is connected to unified gas source, and the stream pressure in two anti-blowpipes is identical.In the present invention, the upper end of anti-blowpipe is connected to identical gas source, and the pressure of the purge gas in two anti-blowpipes is identical, and carries out lasting purging to static tube and ram-air pipe, under the premise of guaranteeing that measurement differential pressure is constant, eliminates pitot tube and occur the phenomenon that accumulated powder blocking dduring test.The pitot tube is made using anti-wear material simultaneously, extends the service life of pitot tube.
Description
Technical field
The invention belongs to speed-measuring structure technical field of improvement, survey more particularly, to a kind of fired power generating unit band powder air-flow block-proof type
Fast method.
Background technique
In order to detect the normal operation of boiler of power plant, band powder air-flow velocity monitoring analysis be essential means of testing it
One.The current total pressure value and static pressure to test the speed with powder air-flow mainly by measurement air-flow, can calculate with pressure difference value
Air-flow velocity.However fired power generating unit with powder air-flow it is traditional during testing the speed, often since pitot tube is placed in band for a long time
In powder air-flow, so that the phenomenon that accumulated powder blocking occurs in pitot tube, causes and test the speed and the distortion of sampling analysis.When in order to eliminate long
Between pitot tube is placed in the blockage that tests the speed in powder air-flow to influence caused by test result, we have invented fired power generating unit bands
Powder air-flow block-proof type speed-measuring method.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide continued using two strands of equal air-flows of pressure
Purging, guarantee measurement differential pressure it is constant under the premise of, eliminate pitot tube and occur the phenomenon that accumulated powder blocking dduring test
A kind of fired power generating unit band powder air-flow block-proof type speed-measuring method.
Specific technical solution of the present invention is as follows:
A kind of fired power generating unit band powder air-flow block-proof type speed-measuring method, including pitot tube and test pipeline, the static pressure of pitot tube
The lower end of pipe and ram-air pipe is located in test pipeline, and two upper ends of static tube and ram-air pipe are connect with test equipment, feature
Be: static tube is connected to an anti-blowpipe with the lower end of ram-air pipe being located in test pipeline, and two anti-blowpipes are located at testing tube
Upper end outside road is connected to unified gas source, and the stream pressure in two anti-blowpipes is identical.
Method includes the following steps:
(1) gas source output high-pressure gas, high pressure gas respectively enter two anti-blowpipes；
(2) high pressure gas by two anti-blowpipe lower ends and communicating pipe enters static tube and ram-air pipe；
(3) band part gas identical with the pressure of the purge gas of ram-air pipe due to static tube, in the test pipeline of the two measurement
The pressure difference of stream is inconvenient, is received by test equipment.
The advantages of the present invention are:
In the present invention, static tube passes through the lower end for being connected to an anti-blowpipe communicating pipe of a transverse direction with ram-air pipe respectively,
The upper end of anti-blowpipe is connected to identical gas source, and the pressure of the purge gas in two anti-blowpipes is identical, and to static tube and total pressure
Pipe carries out lasting purging, and under the premise of guaranteeing that measurement differential pressure is constant, eliminating pitot tube, to occur accumulated powder dduring test stifled
The phenomenon that plug.The pitot tube is made using anti-wear material simultaneously, extends the service life of pitot tube.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the prior art.
Specific embodiment
The present invention is described in further detail by following embodiment, but the technology contents that are described of the present embodiment be it is illustrative,
Without being restrictive, protection scope of the present invention should not be limited to according to this.
A kind of fired power generating unit band powder air-flow block-proof type speed-measuring method, as shown in Figure 1, including pitot tube 2 and test pipeline 1,
The static tube of pitot tube and the lower end of ram-air pipe are located in test pipeline, two upper ends and test equipment of static tube and ram-air pipe
5 connections, innovation of the invention is: static tube and the lower end of ram-air pipe being located in test pipeline are connected to an anti-blowpipe 3, and two
The upper end that a anti-blowpipe is located at outside test pipeline is connected to unified gas source, and the stream pressure in two anti-blowpipes is identical.
Method includes the following steps:
(1) gas source output high-pressure gas, high pressure gas respectively enter two anti-blowpipes；
(2) high pressure gas by two anti-blowpipe lower ends and communicating pipe enters static tube and ram-air pipe；
(3) band part gas identical with the pressure of the purge gas of ram-air pipe due to static tube, in the test pipeline of the two measurement
The pressure difference of stream is inconvenient, is received by test equipment.
In the present invention, the communicating pipe 4 that static tube passes through a transverse direction with ram-air pipe respectively is connected to the lower end of an anti-blowpipe,
The upper end of anti-blowpipe is connected to identical gas source, and the pressure of the purge gas in two anti-blowpipes is identical, and to static tube and total pressure
Pipe carries out lasting purging, and under the premise of guaranteeing that measurement differential pressure is constant, eliminating pitot tube, to occur accumulated powder dduring test stifled
The phenomenon that plug.The pitot tube is made using anti-wear material simultaneously, extends the service life of pitot tube.
Claims (1)
1. a kind of fired power generating unit band powder air-flow block-proof type speed-measuring method, including pitot tube and test pipeline, the static tube of pitot tube
It is located in test pipeline with the lower end of ram-air pipe, two upper ends of static tube and ram-air pipe are connect with test equipment, and feature exists
In: static tube is connected to an anti-blowpipe with the lower end of ram-air pipe being located in test pipeline, and two anti-blowpipes are located at test pipeline
Outer upper end is connected to unified gas source, and the stream pressure in two anti-blowpipes is identical.
Method includes the following steps:
(1) gas source output high-pressure gas, high pressure gas respectively enter two anti-blowpipes；
(2) high pressure gas by two anti-blowpipe lower ends and communicating pipe enters static tube and ram-air pipe；
(3) identical with the pressure of the purge gas of ram-air pipe due to static tube, in the test pipeline of the two measurement with part air-flow
Pressure difference is inconvenient, is received by test equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811431563.0A CN109580982A (en) | 2018-11-22 | 2018-11-22 | A kind of fired power generating unit band powder air-flow block-proof type speed-measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811431563.0A CN109580982A (en) | 2018-11-22 | 2018-11-22 | A kind of fired power generating unit band powder air-flow block-proof type speed-measuring method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109580982A true CN109580982A (en) | 2019-04-05 |
Family
ID=65925145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811431563.0A Pending CN109580982A (en) | 2018-11-22 | 2018-11-22 | A kind of fired power generating unit band powder air-flow block-proof type speed-measuring method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109580982A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596417A (en) * | 2019-08-20 | 2019-12-20 | 光力科技股份有限公司 | Wind speed on-line monitoring method |
| CN113866450A (en) * | 2021-09-27 | 2021-12-31 | 北京华清茵蓝科技有限公司 | Portable anti-blocking gas-solid two-phase flow velocity automatic measurement method and device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2555500Y (en) * | 2002-06-25 | 2003-06-11 | 山东中实股份有限公司 | Dust-contg. airflow airspeed and airflow measurer |
| DE102007053273A1 (en) * | 2007-08-16 | 2009-02-19 | Robert Bosch Gmbh | Flowmeter for use in internal combustion engine of automobile area, has connector part comprising inflow side and outflow side, and two pressure tapping points provided at side wall and at outer wall of connector part, respectively |
| CN203849278U (en) * | 2014-05-08 | 2014-09-24 | 国家电网公司 | Wear prevention and blocking prevention speed measurement tube suitable for on-line measurement |
| CN105510625A (en) * | 2015-11-27 | 2016-04-20 | 山东电力研究院 | Wind speed measurement system and method of pulverized-coal-included airflow of pulverized coal feeding pipe of coal-fired boiler |
-
2018
- 2018-11-22 CN CN201811431563.0A patent/CN109580982A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2555500Y (en) * | 2002-06-25 | 2003-06-11 | 山东中实股份有限公司 | Dust-contg. airflow airspeed and airflow measurer |
| DE102007053273A1 (en) * | 2007-08-16 | 2009-02-19 | Robert Bosch Gmbh | Flowmeter for use in internal combustion engine of automobile area, has connector part comprising inflow side and outflow side, and two pressure tapping points provided at side wall and at outer wall of connector part, respectively |
| CN203849278U (en) * | 2014-05-08 | 2014-09-24 | 国家电网公司 | Wear prevention and blocking prevention speed measurement tube suitable for on-line measurement |
| CN105510625A (en) * | 2015-11-27 | 2016-04-20 | 山东电力研究院 | Wind speed measurement system and method of pulverized-coal-included airflow of pulverized coal feeding pipe of coal-fired boiler |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596417A (en) * | 2019-08-20 | 2019-12-20 | 光力科技股份有限公司 | Wind speed on-line monitoring method |
| CN113866450A (en) * | 2021-09-27 | 2021-12-31 | 北京华清茵蓝科技有限公司 | Portable anti-blocking gas-solid two-phase flow velocity automatic measurement method and device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |