CN111238417A - Online measuring device for sectional area of pipe diameter high-temperature flue - Google Patents
Online measuring device for sectional area of pipe diameter high-temperature flue Download PDFInfo
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- CN111238417A CN111238417A CN202010101471.7A CN202010101471A CN111238417A CN 111238417 A CN111238417 A CN 111238417A CN 202010101471 A CN202010101471 A CN 202010101471A CN 111238417 A CN111238417 A CN 111238417A
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- sectional area
- pipe diameter
- measuring device
- temperature flue
- diameter high
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/28—Measuring arrangements characterised by the use of optical techniques for measuring areas
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- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses an online measuring device for the sectional area of a high-temperature flue with a pipe diameter, which comprises a driving device and a distance measuring sensor, wherein the output end of the driving device is connected with a rotating mirror base through a transmission device, the rotating mirror base is connected with a rotating mirror, and the distance measuring sensor and the rotating mirror receive light beam transmission through a reflecting mirror; the invention adopts an innovative mode that the distance measuring sensor is externally arranged and the worm gear drives the high-temperature resistant rotating mirror, thereby effectively ensuring the normal work of the equipment in high-temperature and dusty environments, stable and reliable power supply and data transmission and realizing the aim of accurately measuring the sectional area with high precision.
Description
Technical Field
The invention relates to an online measuring device for the sectional area of a high-temperature flue with a pipe diameter, and belongs to the technical field of measurement.
Background
With the rapid development of social economy and the continuous improvement of the living standard of people, common people put forward higher and higher requirements on the environmental quality, but the haze brought by the atmospheric pollution greatly reduces the satisfaction degree of people on the environmental protection work, and the industrial waste gas is focused by the environmental protection department as the main source of the atmospheric pollution. A continuous monitoring system (hereinafter referred to as a CEMS system) for the smoke emission of a fixed pollution source is a device which continuously monitors the concentration and the total emission amount of gaseous pollutants and particulate matters emitted by an atmospheric pollution source and transmits information to a competent department in real time. The CEMS system mainly comprises a gaseous pollutant monitoring subsystem, a particulate matter monitoring subsystem, a smoke parameter monitoring subsystem and a data acquisition, processing and communication subsystem, wherein the smoke parameter monitoring subsystem is mainly used for measuring parameters such as smoke flow rate, temperature, pressure, oxygen content, humidity and the like. The flow rate of the flue gas is multiplied by the sectional area of the monitoring point of the flue, so that the discharge flow of the flue gas is obtained, and the total discharge amount of the flue gas can be obtained by combining parameters such as temperature, pressure, humidity and the like.
The flue gas pipeline has the forms of circle, rectangle, etc., and the section size is bigger usually, and some unilateral length need exceed 10 m. At present, the sectional area of a flue monitoring point usually adopts an actually measured area value when the flue monitoring point is newly installed. However, unlike conventional gaseous media, flue gases contain not only a variety of gaseous components, but also dust, high temperatures (up to 200 ℃), high humidity, and, in some cases, strong corrosivity. After a period of operation, the cross-sectional area of the flue inevitably changes due to fouling or corrosion. Therefore, in order to ensure the accuracy of the total smoke emission data, the online periodic calibration of the cross section area of the flue is particularly necessary.
The existing measuring method of the cross section area of the flue is as follows: the industrial laser ranging sensor is internally fixed on the scanning base, the sensor is driven to rotate in a chain wheel and chain mode to carry out scanning measurement, and measurement data are uploaded to the main control chip through the serial port to be stored and analyzed;
the working temperature of the laser ranging sensor is generally-20-50 ℃, the humidity is high, the dust is large, and the ranging sensor cannot work normally at the high temperature of about 200 ℃. Because the laser sensor is built in, high-temperature protection measures need to be made, and the design of an effective high-temperature protection structure needs considerable space size and high cost. However, the size of the test window provided by the flue of the invention is small (not larger than DN80mm), the effective and reliable heat insulation and heat preservation protection structure design on the distance measuring sensor cannot be realized, and especially the high-temperature glass cannot effectively prevent the influence of heat radiation.
Disclosure of Invention
The invention aims to provide an online measuring device for the sectional area of a high-temperature flue with a pipe diameter, which aims to overcome the defect that the prior art cannot realize effective and reliable heat insulation and heat preservation protection structure design on a distance measuring sensor.
The utility model provides a pipe diameter high temperature flue sectional area on-line measuring device, includes drive arrangement and range finding sensor, the drive arrangement output is connected with rotatory mirror seat through transmission, rotatory mirror seat is connected with the rotating mirror, range finding sensor passes through the speculum with the rotating mirror and accepts the light beam transmission.
Preferably, the transmission device comprises a transmission shaft, a worm and a gear shaft, one end of the transmission shaft is connected with the driving device, the other end of the transmission shaft is connected with the worm, the worm is meshed with the gear shaft, and the gear shaft is connected with the rotary mirror base.
Preferably, the driving device is provided with a power supply inside.
Preferably, the distance measuring sensor is provided with an external data transmission serial port.
Preferably, an electric quantity display module is arranged outside the driving device.
Preferably, the rotating mirror is made of high-temperature resistant optical glass.
Preferably, the reflector adopts a high-temperature resistant reflecting film.
Preferably, the driving device is a driving motor.
Compared with the prior art, the invention has the following beneficial effects:
(1) design of mechanical structure: by adopting an innovative design idea, the small and compact structure, light weight, stability, reliability and convenient hand-holding of the equipment are ensured; the angle scanning control system is designed by a worm and gear type mechanical transmission structure and is rigidly connected, so that the accuracy of the angle scanning control system is effectively guaranteed.
(2) Design of high-speed data processing display system: and the real-time performance of online measurement is ensured by adopting a computer-side data processing technology.
(3) Designing a scheme of a rotating mirror: the innovative mode that the distance measuring sensor is arranged externally and the high-temperature resistant rotating mirror is driven by the worm gear and the worm is adopted, so that the normal work, stable and reliable power supply and data transmission of the equipment in high-temperature and dusty environments are effectively ensured, and the aim of accurately measuring the sectional area with high precision is fulfilled.
(4) The laser ranging sensor is arranged externally, the innovative scheme design of the rotating mirror is adopted, the problems of normal work and measurement accuracy of the laser ranging sensor in high-temperature and dusty environments are fundamentally solved, and meanwhile, the problems of equipment power supply and data transmission in a high-temperature rotation state are fundamentally solved due to the fact that the laser ranging sensor is arranged outside and fixedly installed and rotation is avoided in the high-temperature environment.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the cross-sectional area measurement of the flue of the present invention.
In the figure: 1. a drive device; 2. a drive shaft; 3. a worm; 4. a gear shaft; 5. a rotating mirror; 6. rotating the lens base; 7. a mirror; 8. and a distance measuring sensor.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-2, an online measuring device for the cross-sectional area of a high-temperature flue with a pipe diameter is disclosed, which comprises a driving device 1 and a distance measuring sensor 8, wherein the output end of the driving device 1 is connected with a rotating mirror base 6 through a transmission device, the transmission device comprises a transmission shaft 2, a worm 3 and a gear shaft 4, one end of the transmission shaft 2 is connected with the driving device 1, the other end of the transmission shaft is connected with the worm 3, the worm 3 is meshed with the gear shaft 4, the gear shaft 4 is connected with the rotating mirror base 6, and the accuracy of an angle scanning control system is effectively ensured by adopting a worm and gear type mechanical transmission structure design; rotatory mirror seat 6 is connected with rotating mirror 5, distance measuring sensor 8 accepts the light beam transmission through speculum 7 with rotating mirror 5, and transmission establishes in the casing, and speculum 7 is fixed on the casing, does not take place rotation and removal, and laser beam reflects once more to high temperature resistant rotating mirror 5 through high temperature resistant reflecting mirror 7 and beats on the target of being surveyed through measuring the window, thereby returns distance measuring sensor 8 receiving terminal through former route through the target reflection of being surveyed and realizes the single-point measurement, drives rotating mirror 5 through drive arrangement 1 again and rotates in order to realize the scanning measurement.
In this embodiment, the driving device 1 is provided with a power supply inside, and the power supply supplies power to the distance measuring sensor and the driving device. The distance measuring sensor 8 is provided with an external data transmission serial port, and the measured data is uploaded to a computer terminal through the serial port and is stored and analyzed. In this embodiment, because whole detection device need detect in very little pipeline, guarantee in the testing process, the sufficiency of electric quantity, be equipped with the electric quantity display module in drive arrangement 1 outside, can in time charge for power supply according to the display module selection. In the embodiment, in order to avoid the influence of thermal radiation under the condition of high temperature, the rotating mirror 5 adopts high-temperature resistant optical glass, and the reflecting mirror 7 adopts a high-temperature resistant reflecting film, so that the thermal radiation is effectively prevented.
In the present embodiment, the driving device 1 in the present apparatus is a driving motor.
As shown in fig. 2, firstly, the computer end collects the distance measured by the industrial laser ranging sensor and the rotating angle of the scanning device, and then the cross-sectional area of the flue is calculated according to the following algorithm:
s1: the original shape of the inner hole of the flue;
s2: the actual shape of the inner hole of the flue;
p1, P2, … Pn-1: the actual distance from the center of the instrument to the inner hole of the flue;
θ1，θ2，…θn: scanning angle of the laser range finder;
flue section area:
the above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a pipe diameter high temperature flue sectional area on-line measuring device, its characterized in that, includes drive arrangement and range finding sensor, the drive arrangement output is connected with rotatory mirror seat through transmission, rotatory mirror seat is connected with the rotating mirror, range finding sensor and rotating mirror pass through the speculum and accept the light beam transmission.
2. The on-line measuring device for the pipe diameter high-temperature flue sectional area according to claim 1, wherein the transmission device comprises a transmission shaft, a worm and a gear shaft, one end of the transmission shaft is connected with the driving device, the other end of the transmission shaft is connected with the worm, the worm is meshed with the gear shaft, and the gear shaft is connected with the rotary mirror base.
3. The on-line measuring device for the pipe diameter high-temperature flue sectional area according to claim 1, wherein a power supply is arranged in the driving device.
4. The on-line measuring device for the pipe diameter high-temperature flue sectional area according to claim 1, wherein the distance measuring sensor is provided with an external data transmission serial port.
5. The on-line measuring device for the pipe diameter high-temperature flue sectional area according to claim 1, wherein an electric quantity display module is arranged outside the driving device.
6. The on-line measuring device for the pipe diameter high-temperature flue sectional area according to claim 1, wherein the rotating mirror is made of high-temperature-resistant optical glass.
7. The on-line measuring device for the pipe diameter high-temperature flue sectional area according to claim 1, wherein the reflector adopts a high-temperature resistant reflecting film.
8. The on-line measuring device for the pipe diameter high-temperature flue sectional area according to claim 1, wherein the driving device is a driving motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010101471.7A CN111238417A (en) | 2020-02-19 | 2020-02-19 | Online measuring device for sectional area of pipe diameter high-temperature flue |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010101471.7A CN111238417A (en) | 2020-02-19 | 2020-02-19 | Online measuring device for sectional area of pipe diameter high-temperature flue |
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| CN111238417A true CN111238417A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010101471.7A Pending CN111238417A (en) | 2020-02-19 | 2020-02-19 | Online measuring device for sectional area of pipe diameter high-temperature flue |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029504A (en) * | 2021-03-04 | 2021-06-25 | 中国航空工业集团公司西安航空计算技术研究所 | Quantitative detection system and method for cooling air stagnation area of low-profile-rate gradually-expanding channel |
| CN117010039A (en) * | 2023-07-18 | 2023-11-07 | 江苏优探智能科技有限公司 | Structure optimization method of rotary mirror base and related equipment thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003207321A (en) * | 2002-01-11 | 2003-07-25 | Kobe Steel Ltd | Shape measuring device for high-temperature object |
| JP2006030164A (en) * | 2004-06-15 | 2006-02-02 | Sumitomo Metal Ind Ltd | Distance measuring instrument and method of high-temperature body, shape measuring instrument and method, and soundness-evaluating device and method of fireproof structure |
| CN203941343U (en) * | 2014-07-17 | 2014-11-12 | 国网安徽省电力公司淮南供电公司 | For the auxiliary multi-angle rotary mirror of finding range |
| CN110375681A (en) * | 2019-07-15 | 2019-10-25 | 中国计量科学研究院 | The normal pressures large diameter pipeline area of section on-line calibration device such as a kind of flue or chimney |
-
2020
- 2020-02-19 CN CN202010101471.7A patent/CN111238417A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003207321A (en) * | 2002-01-11 | 2003-07-25 | Kobe Steel Ltd | Shape measuring device for high-temperature object |
| JP2006030164A (en) * | 2004-06-15 | 2006-02-02 | Sumitomo Metal Ind Ltd | Distance measuring instrument and method of high-temperature body, shape measuring instrument and method, and soundness-evaluating device and method of fireproof structure |
| CN203941343U (en) * | 2014-07-17 | 2014-11-12 | 国网安徽省电力公司淮南供电公司 | For the auxiliary multi-angle rotary mirror of finding range |
| CN110375681A (en) * | 2019-07-15 | 2019-10-25 | 中国计量科学研究院 | The normal pressures large diameter pipeline area of section on-line calibration device such as a kind of flue or chimney |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029504A (en) * | 2021-03-04 | 2021-06-25 | 中国航空工业集团公司西安航空计算技术研究所 | Quantitative detection system and method for cooling air stagnation area of low-profile-rate gradually-expanding channel |
| CN113029504B (en) * | 2021-03-04 | 2023-08-04 | 中国航空工业集团公司西安航空计算技术研究所 | Quantitative detection system and method for cooling air stagnation area of low-profile gradually-expanding channel |
| CN117010039A (en) * | 2023-07-18 | 2023-11-07 | 江苏优探智能科技有限公司 | Structure optimization method of rotary mirror base and related equipment thereof |
| CN117010039B (en) * | 2023-07-18 | 2024-03-01 | 江苏优探智能科技有限公司 | Structure optimization method of rotary mirror base and related equipment thereof |
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Application publication date: 20200605 |