CN111964983A - Smoke and dust flue gas sampling check out test set of taking U-shaped three-way pipe - Google Patents
Smoke and dust flue gas sampling check out test set of taking U-shaped three-way pipe Download PDFInfo
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- CN111964983A CN111964983A CN202010971821.5A CN202010971821A CN111964983A CN 111964983 A CN111964983 A CN 111964983A CN 202010971821 A CN202010971821 A CN 202010971821A CN 111964983 A CN111964983 A CN 111964983A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/2247—Sampling from a flowing stream of gas
- G01N1/2258—Sampling from a flowing stream of gas in a stack or chimney
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
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Abstract
The invention discloses a smoke and dust flue gas sampling and detecting device with a U-shaped three-way pipe, which comprises: the U-shaped three-way pipe, smoke and dust flue gas intake pipe, the sampling rifle body, humidity transducer, the U-shaped three-way pipe is inversion state and connects in sampling rifle body front end, sampling rifle internal portion is located to smoke and dust flue gas intake pipe, the U-shaped three-way pipe is a hollow U-shaped pipe, the front end of U-shaped three-way pipe is equipped with first opening, the back lateral wall of the rear end of U-shaped three-way pipe is equipped with the second opening and is connected with the front end of smoke and dust flue gas intake pipe, first opening and second opening link up, humidity transducer locates the inside of U-shaped three-way pipe, the smoke and dust flue gas that the fixed pollution source discharged out gets into the U-shaped three-way pipe from the first opening of U-shaped three-way pipe, through humidity transducer, and the leading-in to smoke and. The invention relates to a smoke sampling and detecting device which can effectively protect a humidity sensor from being damaged by wind pressure.
Description
Technical Field
The invention relates to the technical field of smoke and dust flue gas sampling and processing equipment, in particular to smoke and dust flue gas sampling and detecting equipment capable of effectively protecting a humidity sensor from being damaged by wind pressure
Background
1. According to the requirements of relevant environmental protection specifications and standards, when the flue gas of power station boilers, industrial boilers and the like is discharged, the outlet speed of the flue gas is generally about 10 m/s-30 m/s, and the most suitable outlet gas speed of a chimney is 15 m/s. Typically, the humidity sensor should be located at a wind speed of no more than 3 m/s. The wind pressure is in direct proportion to the square of the wind speed, the larger the wind speed is, the larger the wind pressure on a plane perpendicular to the airflow direction is, and the more serious the damage to the humidity sensor is.
2. When the existing integrated working condition detector detects the humidity in the flue, the humidity sensor is not protected fundamentally, and the change of the wind speed can influence the measurement result of the humidity sensor. When the wind speed of the environment where the humidity sensor is located exceeds the maximum wind speed which can be borne by the humidity sensor during field measurement, the overvoltage can cause the detection fault of the sensor.
3. In actual use, due to the influence of dust, oil stains and harmful gases, the humidity sensor can be aged after a long time of use, and the precision is reduced.
Therefore, a smoke sampling and detecting device capable of effectively protecting the humidity sensor from being damaged by wind pressure is needed.
Disclosure of Invention
The invention aims to provide smoke dust and smoke sampling and detecting equipment capable of effectively protecting a humidity sensor from being damaged by wind pressure.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: the utility model provides a take smoke and dust flue gas sampling check out test set of U-shaped three-way pipe can be used to detect the humidity information of the smoke and dust flue gas that fixed pollution source discharged through humidity transducer, include: the device comprises a U-shaped three-way pipe, a smoke and dust flue gas inlet pipe, a sampling gun body and a humidity sensor, wherein the U-shaped three-way pipe is connected to the front end of the sampling gun body in an inverted state, the smoke and dust flue gas inlet pipe is arranged in the sampling gun body, the U-shaped three-way pipe is a hollow U-shaped pipe, a first opening is formed in the front end of the U-shaped three-way pipe, a second opening is formed in the rear side wall of the rear end of the U-shaped three-way pipe and is connected with the front end of the smoke and dust flue gas inlet pipe, the first opening is communicated with the second opening, the humidity sensor is arranged in the U-shaped three-way pipe, smoke and dust discharged from a fixed pollution source enter the U-shaped three-way pipe from the first opening of the U-shaped three-way pipe, pass through the humidity sensor and are guided into the smoke and dust inlet pipe from.
The rear end of the U-shaped three-way pipe is provided with a third opening, the first opening, the second opening and the third opening are communicated in pairs, and the first opening and the third opening are provided with filter screens.
The humidity sensor is arranged at the bent part of the U-shaped three-way pipe.
The wind speed sensor is arranged at the bent part of the U-shaped three-way pipe.
And a flange is arranged on the rear side wall of the rear end of the U-shaped three-way pipe at the second opening, and the rear side wall is inserted into the front end of the smoke and dust flue gas inlet pipe in a pluggable manner through the flange to be connected.
Compared with the prior art, due to the introduction of the U-shaped three-way pipe, when the humidity of the smoke dust and smoke gas in the fixed pollution source is detected, the U-shaped three-way pipe can buffer the flow velocity of the smoke dust and smoke gas entering the U-shaped three-way pipe, and the flow velocity of the smoke dust and smoke gas is reduced, so that the situation that the humidity sensor is damaged by large-particle dust carried by the smoke dust and smoke gas due to overhigh flow velocity is effectively prevented.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings, which illustrate embodiments of the invention.
Drawings
Fig. 1 is a schematic diagram of one embodiment of the smoke sampling and detecting device with a U-shaped tee pipe.
Fig. 2 shows a schematic view of a U-tee.
Detailed Description
According to the requirements of relevant environmental protection specifications and standards, when the flue gas of a power station boiler, an industrial boiler, a chimney and the like is discharged, the outlet speed of the flue gas is generally about 10 m/s-30 m/s, and the most suitable outlet gas speed of the chimney is 15 m/s. The wind pressure and the square of the wind speed are in a direct proportion relation, the larger the wind speed value is, the larger the wind pressure value on the plane vertical to the airflow direction is, and the more serious the damage of large particles contained in smoke dust smoke gas to the humidity sensor is. The existing working condition detector or smoke sampling detection equipment does not perform fundamental protection on a humidity sensor when detecting temperature and humidity, and can cause sensor detection faults when exceeding the maximum wind pressure bearable by the humidity sensor.
It should be noted that the above-mentioned working condition detector is a device for detecting the working condition information in the fixed pollution source, and before formal detection of information such as temperature and humidity of smoke and dust in the fixed pollution source, the working condition information in the fixed pollution source is detected in advance, so that a rough understanding can be provided for the working condition information in the fixed pollution source in advance. Generally speaking, before sampling and detecting smoke and dust flue gas in a fixed pollution source, a condition detector is used for detecting temperature and humidity information of the smoke and dust flue gas in the fixed pollution source in advance, and only under the conditions of temperature and humidity and the like of the smoke and dust flue gas in the fixed pollution source, the smoke and dust flue gas sampling and detecting equipment is suitable for sampling of precise smoke and dust flue gas sampling and detecting equipment, and can go deep into the fixed pollution source for sampling and detecting. There are also devices in the market, which integrate the condition detector and the sampling detection device, and the present disclosure is not limited specifically.
It should be noted that the information about the operating condition in the fixed pollution source refers to physical information such as temperature, humidity, flow rate, etc. of the smoke and dust in the fixed pollution source, and may also be chemical information, which is not limited in this document.
It is also noted that stationary sources of pollution, typically sites, equipment and devices directed to the environment that emit or release hazardous materials or have a deleterious effect on the environment. Sources of air pollution include stationary sources and mobile sources. Stationary sources of pollution are further divided into organized and unorganized sources. The organized fixed pollution source refers to a power station boiler, an industrial boiler, a flue, a chimney, an exhaust funnel and the like, and the organized fixed pollution source mainly refers to the organized fixed pollution source, and the flue, the chimney or the exhaust funnel is not particularly limited.
In one embodiment, a chimney is taken as an embodiment, when the smoke and dust smoke is detected by a working condition detector or smoke and dust smoke sampling detection equipment, the instrument or equipment is usually directly inserted into a sampling port of the chimney for detection, sampling is performed through the sampling port, and a part of smoke and dust smoke in the chimney enters a sampling pipe of the instrument or equipment through the sampling port to form a smoke and dust smoke sample for sampling detection.
Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements. As described above, referring to fig. 1 and 2, the present invention provides a smoke and dust sampling and detecting device 100 with a U-shaped three-way pipe, which can be used for detecting humidity information of smoke and dust emitted from a fixed pollution source 10 by a humidity sensor, and comprises: the device comprises a U-shaped three-way pipe 1, a smoke and dust gas inlet pipe 2, a sampling gun body 3 and a humidity sensor 4, wherein the U-shaped three-way pipe 1 is connected to the front end of the sampling gun body 3 in an inverted state, the smoke and dust gas inlet pipe 2 is arranged inside the sampling gun body 3, the U-shaped three-way pipe 1 is a hollow U-shaped pipe, namely, a buffer pipe with a U-shaped hollow cavity is arranged inside the U-shaped three-way pipe 1, a first opening 11 is arranged at the front end of the U-shaped three-way pipe 1, a second opening 12 is arranged on the rear side wall of the rear end of the U-shaped three-way pipe 1 and is connected with the front end of the smoke and dust gas inlet pipe 2, the first opening 11 is communicated with the second opening 12, specifically, the first opening 11 and the second opening 12 are communicated with the U-shaped hollow cavity inside the U-shaped three-way pipe 1, the humidity sensor 4 is arranged inside the U-shaped, the smoke and dust flue gas discharged by the fixed pollution source 10 enters the U-shaped three-way pipe 1 from the first opening 11 of the U-shaped three-way pipe 1, passes through the humidity sensor 4 and is guided into the smoke and dust flue gas inlet pipe 2 from the second opening 12 of the U-shaped three-way pipe 1.
The explanation is as follows: "upside down" means that the U-shaped opening 15 of said U-tee 1 is facing downwards and the smoke fumes from a stationary pollution source, such as a chimney, can enter inside said U-tee 1 from said first opening 11 from below and upwards, with particular reference to fig. 1 and 2.
It should be noted that the larger the flow velocity of the smoke and dust flue gas emitted by the fixed pollution source is, the larger the wind pressure value that the humidity sensor 4, which is located inside the fixed pollution source and detects the humidity information of the smoke and dust flue gas, may be subjected to is. When the smoke and dust smoke in the fixed pollution source discharges the smoke and dust smoke, particles with larger particle sizes may be discharged at the same time, and if the particles with larger particle sizes directly impact the surface of the humidity sensor 4, the humidity sensor 4 may be damaged.
It should be noted that the smoke and dust flue gas entering from the first opening 11 of the U-shaped three-way pipe 1 is buffered in the U-shaped three-way pipe 1, and the smoke and dust flue gas enters from the first opening 11 from bottom to top, rises to the highest point in the U-shaped three-way pipe 1 at one side of the U-shaped three-way pipe, then falls to the second opening 12 from the other side, and then enters the smoke and dust flue gas inlet pipe 2 from the second opening 12, so that the flow velocity of the smoke and dust flue gas entering the U-shaped three-way pipe 1 is greatly reduced, and the wind pressure received by the humidity sensor 4 is greatly reduced.
Referring to fig. 2, the rear end of the U-shaped three-way pipe 1 is provided with a third opening 13, the first opening 11, the second opening 12 and the third opening 13 are communicated with each other in pairs, and the first opening 11 and the third opening 13 are provided with filter screens.
Referring to fig. 2, the humidity sensor 4 is arranged at the bent position of the U-shaped three-way pipe 1.
Specifically, the U-shaped three-way pipe 1 is a hollow U-shaped pipe, and the first opening 11, the second opening 12 and the third opening 13 are all communicated with a U-shaped hollow cavity inside the U-shaped three-way pipe 1. When the U-shaped tee 1 is placed inside a fixed pollution source, such as a chimney flue, smoke and dust can enter the U-shaped cavity from the first opening 11 and the third opening 13 at the same time, and can be introduced into the smoke and dust inlet pipe 2 from the second opening 12. The advantage that so sets up lies in, can so be so that locate in the U-shaped three-way pipe 1 the wind pressure offset of its both sides of humidity transducer 4, therefore the wind pressure that humidity transducer 4 received obtains very big reduction, can prevent humidity transducer 4 is because the harm that the particle that high wind pressure and high wind pressure carried brought. Thus, the service life of the humidity sensor 4 can be maximized.
Specifically, the first opening 11 and the third opening 13 are both provided with filter screens. And the apertures of the filter screens arranged at the first opening 11 and the third opening 13 are different, so as to control the wind pressure entering the first opening 11 and the third opening 13, and ensure that the flow rate of the flue gas flowing through the humidity sensor 4 is within a target value range. It should be noted that this "target value" means that the flow rate of the flue gas does not damage the flow rate of the humidity sensor 4.
It should be noted that, by setting the aperture sizes of the filter screens to be different, the wind pressure at the first opening 11 is larger than the wind pressure at the third opening 13, so the amount of the smoke and dust entering from the third opening 13 is much smaller than the amount entering from the first opening 11, and is introduced into the smoke and dust gas inlet pipe 2 from the second opening 12.
In one embodiment, referring to fig. 2, a wind speed sensor 5 is further included, and the humidity sensor 4 and the wind speed sensor 5 are both disposed at a bent portion of the U-shaped three-way pipe 1. The wind speed sensor 5 is arranged, and the position points of the wind speed sensor 5 and the humidity sensor 4 are basically consistent, so that the size information of the wind speed detected by the wind speed sensor 5 is the size of the wind speed of the environment where the humidity sensor 4 is located, and the size information of the wind speed received by the humidity sensor 4 is convenient to master.
In one embodiment, referring to fig. 2, the rear side wall of the rear end of the U-shaped tee 1 at the second opening 12 is provided with a flange 14, and is connected to the front end of the smoke and fume inlet pipe 2 by the flange 14 in a pluggable manner. The U-shaped three-way pipe 1 and the smoke and dust flue gas inlet pipe 2 can be well spliced through the flange 14, the U-shaped three-way pipe 1 can be detached from the smoke and dust flue gas inlet pipe 2, the U-shaped three-way pipe can be rapidly installed when the humidity sensor 4 is needed to detect the humidity of smoke and dust flue gas, and the U-shaped three-way pipe can be detached when the detection is completed.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, therefore, the present invention is not limited by the appended claims.
Claims (5)
1. The utility model provides a take smoke and dust flue gas sampling check out test set of U-shaped three-way pipe, can be used to detect the humidity information of the smoke and dust flue gas that fixed pollution source discharged through humidity transducer, its characterized in that includes: the device comprises a U-shaped three-way pipe, a smoke and dust flue gas inlet pipe, a sampling gun body and a humidity sensor, wherein the U-shaped three-way pipe is connected to the front end of the sampling gun body in an inverted state, the smoke and dust flue gas inlet pipe is arranged in the sampling gun body, the U-shaped three-way pipe is a hollow U-shaped pipe, a first opening is formed in the front end of the U-shaped three-way pipe, a second opening is formed in the rear side wall of the rear end of the U-shaped three-way pipe and is connected with the front end of the smoke and dust flue gas inlet pipe, the first opening is communicated with the second opening, the humidity sensor is arranged in the U-shaped three-way pipe, smoke and dust discharged from a fixed pollution source enter the U-shaped three-way pipe from the first opening of the U-shaped three-way pipe, pass through the humidity sensor and are guided into the smoke and dust inlet pipe from.
2. The smoke and dust and flue gas sampling and detecting equipment with the U-shaped three-way pipe as claimed in claim 1, wherein the rear end of the U-shaped three-way pipe is provided with a third opening, the first opening, the second opening and the third opening are communicated with each other in pairs, and a filter screen is arranged at each of the first opening and the third opening.
3. The smoke sampling and detecting equipment with the U-shaped tee pipe as claimed in claim 1, wherein the humidity sensor is arranged at the bent part of the U-shaped tee pipe.
4. The smoke and dust and smoke sampling and detecting equipment with the U-shaped tee pipe as claimed in claim 1 or 3, further comprising a wind speed sensor, wherein the humidity sensor and the wind speed sensor are both arranged at the bent position of the U-shaped tee pipe.
5. The smoke and dust sampling and detecting equipment with the U-shaped tee pipe as claimed in claim 1 or 3, wherein a flange is arranged on the rear side wall of the rear end of the U-shaped tee pipe at the second opening, and the flange is inserted into the front end of the smoke and dust gas inlet pipe in a pluggable mode to be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010971821.5A CN111964983A (en) | 2020-09-16 | 2020-09-16 | Smoke and dust flue gas sampling check out test set of taking U-shaped three-way pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010971821.5A CN111964983A (en) | 2020-09-16 | 2020-09-16 | Smoke and dust flue gas sampling check out test set of taking U-shaped three-way pipe |
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| Publication Number | Publication Date |
|---|---|
| CN111964983A true CN111964983A (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010971821.5A Pending CN111964983A (en) | 2020-09-16 | 2020-09-16 | Smoke and dust flue gas sampling check out test set of taking U-shaped three-way pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636735A (en) * | 2021-11-10 | 2022-06-17 | 国能南京电力试验研究有限公司 | High wet flue gas humidity survey of ultralow emission of thermal power plant surveys rifle |
-
2020
- 2020-09-16 CN CN202010971821.5A patent/CN111964983A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114636735A (en) * | 2021-11-10 | 2022-06-17 | 国能南京电力试验研究有限公司 | High wet flue gas humidity survey of ultralow emission of thermal power plant surveys rifle |
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Address after: No.757, dixiu Road, Binjiang Economic Development Zone, Jiangning District, Nanjing City, Jiangsu Province, 211161 Applicant after: Jiangsu Guoji Intelligent Technology Co.,Ltd. Address before: 518102 Room 301, No.1 Factory building, Honghui Industrial Zone, No.2 liuxiansan Road, 68 Xingdong community, Xin'an street, Bao'an District, Shenzhen City, Guangdong Province Applicant before: Shenzhen National Technology Environmental Protection Technology Co.,Ltd. |