CN111965311A - Smoke and dust flue gas sampling check out test set of taking bowl formula protection device - Google Patents
Smoke and dust flue gas sampling check out test set of taking bowl formula protection device Download PDFInfo
- Publication number
- CN111965311A CN111965311A CN202010971775.9A CN202010971775A CN111965311A CN 111965311 A CN111965311 A CN 111965311A CN 202010971775 A CN202010971775 A CN 202010971775A CN 111965311 A CN111965311 A CN 111965311A
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- China
- Prior art keywords
- bowl
- smoke
- type protecting
- flue gas
- safety cover
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- 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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- 239000000779 smoke Substances 0.000 title claims abstract description 81
- 239000000428 dust Substances 0.000 title claims abstract description 61
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000003546 flue gas Substances 0.000 title claims abstract description 44
- 238000005070 sampling Methods 0.000 title claims abstract description 36
- 239000003517 fume Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 40
- 239000011241 protective layer Substances 0.000 description 37
- 239000007789 gas Substances 0.000 description 11
- 238000001514 detection method Methods 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 9
- 239000002245 particle Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000383 hazardous chemical Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- 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
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The invention discloses a smoke and dust flue gas sampling and detecting device with a bowl type protecting device, which can be used for detecting the humidity information of smoke and dust flue gas emitted by a fixed pollution source through a humidity sensor and comprises the following components: bowl formula safety cover and humidity transducer, the bowl mouth of bowl formula safety cover just runs through to the direction setting that smoke and dust flue gas flows the internal surface and the surface of bowl formula safety cover are equipped with the through-hole structure, humidity transducer locates the inside of bowl formula safety cover, smoke and dust flue gas passes through the flow direction of bowl mouth in the bowl formula safety cover, and pass through the through-hole structure flows outside the bowl formula safety cover. 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 with a bowl-type protection device, which can effectively protect 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 need exists for a smoke and dust sampling and detecting device with a bowl-type protection device, which can effectively protect a humidity sensor from being damaged by wind pressure.
Disclosure of Invention
The invention aims to provide smoke sampling and detecting equipment with a bowl-type protection device, which can effectively protect 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 bowl formula protection device's smoke and dust flue gas sampling check out test set can be used to detect the humidity information of the smoke and dust flue gas that fixed pollution sources discharged through humidity transducer, includes: bowl formula safety cover and humidity transducer, the bowl mouth of bowl formula safety cover just runs through to the direction setting that smoke and dust flue gas flows the internal surface and the surface of bowl formula safety cover are equipped with the through-hole structure, humidity transducer locates the inside of bowl formula safety cover, smoke and dust flue gas passes through the flow direction of bowl mouth in the bowl formula safety cover, and pass through the through-hole structure flows outside the bowl formula safety cover.
The bowl formula safety cover includes first layer bowl formula structural layer and second floor bowl formula protective layer, second floor bowl formula protective layer is located first layer bowl formula protective layer top, just the arc camber of first layer bowl formula protective layer is less than the arc camber of second floor bowl formula protective layer, form the cavity structure of crescent between first layer bowl formula protective layer and the second floor bowl formula protective layer.
First layer bowl formula protective layer and second floor bowl formula protective layer all are equipped with through-hole structure, just first layer bowl formula protective layer sets up through-hole structure's quantity is less than second floor bowl formula protective layer sets up through-hole structure's quantity.
The first layer of bowl-shaped protective layer and the second layer of bowl-shaped protective layer are detachably clamped together.
The bowl type protective cover is detachably connected to the front end of the sampling gun.
Compared with the prior art, the smoke and dust and flue gas sampling and detecting equipment with the bowl-type protection device effectively protects the influence of larger wind speed on the humidity sensor and prolongs the service life of the humidity sensor. The bowl-type protection can generate reverse convection wind for smoke dust and smoke gas, so that the wind speed of the smoke dust and smoke gas is effectively reduced, and the humidity sensor cannot be damaged under the condition of high wind speed.
Bowl formula safety cover first layer bowl formula protective layer and second floor bowl formula protective layer equipartition are equipped with the through-hole structure, just the arc camber of first layer bowl formula protective layer is less than the arc camber of second floor bowl formula protective layer, form the cavity structure of crescent between first layer bowl formula protective layer and the first layer bowl formula protective layer. The crescent cavity structure forms a buffer cavity, so that the wind speed of smoke dust and smoke gas is effectively reduced.
According to the invention, the humidity sensor is arranged at a reasonable position on the central axis of the bowl-type protective cover, and the flue gas flow axially passes through the bowl-type protective cover and is disturbed by the first layer of bowl-type protective layer and the second layer of bowl-type protective layer, so that the aim of reducing the wind speed is achieved, and the device is safe and reliable.
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 a smoke and dust sampling and detecting device with a bowl-type protecting device according to an embodiment of the invention.
FIG. 2 is a schematic view of one embodiment of a bowl-type shield.
Fig. 3 is a schematic cross-sectional view of the bowl-shaped protection cover shown in fig. 2.
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.
The smoke and dust flue gas sampling and detecting equipment with the bowl-type protection device can detect the humidity of smoke and dust flue gas of a fixed emission source such as a chimney under any working condition without damaging a humidity sensor.
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, 2 and 3, the present invention provides a smoke and dust sampling and detecting device with a bowl-type protection device, which can be used for detecting humidity information of smoke and dust emitted from a fixed pollution source by a humidity sensor, and comprises: bowl formula safety cover 1 and humidity transducer 2, bowl mouth 11 of bowl formula safety cover 1 just runs through to the direction setting that the smoke and dust flue gas flows the internal surface and the surface of bowl formula safety cover 1 are equipped with through-hole structure 3, humidity transducer 2 locates the inside of bowl formula safety cover 1, the smoke and dust flue gas passes through 11 flow directions in the bowl mouth inside of bowl formula safety cover 1, and pass through-hole structure 3 flows out 1 outer of bowl formula safety cover. In this embodiment, the velocity of flow of smoke and dust flue gas receives bowl formula safety cover 1's vortex effect reduces the flow direction of smoke and dust flue gas effectively the velocity of flow on humidity transducer surface, consequently the flow direction of smoke and dust flue gas gives during humidity transducer 2 the wind pressure that humidity transducer 2 produced greatly reduces, and the big particle diameter particle that wind pressure that the smoke and dust flue gas produced and smoke and dust flue gas carried is right humidity transducer's impact force greatly reduces, can not damage humidity transducer 2.
In one embodiment, referring to fig. 3, the bowl-shaped protection cover 1 includes a first bowl-shaped structure layer 12a and a second bowl-shaped protection layer 12b, the second bowl-shaped protection layer 12b is disposed above the first bowl-shaped protection layer 12a, an arc curvature of the first bowl-shaped protection layer 12a is smaller than an arc curvature of the second bowl-shaped protection layer 12b, and a crescent-shaped cavity structure 13 is formed between the first bowl-shaped protection layer 12a and the second bowl-shaped protection layer 12 b. In this embodiment, because the arc curvature of first layer bowl formula protective layer 12a is less than the arc curvature of second layer bowl formula protective layer 12b, consequently, form crescent between first layer bowl formula protective layer 12a and the second layer bowl formula protective layer 12b cavity structure 13, cavity structure 13 plays a buffer function, can prevent effectively bowl formula safety cover 1 produces deformation because of high wind pressure under great wind speed condition. Will when bowl formula safety cover 1 is arranged in the smoke and dust flue gas runner in fixed pollution sources such as the chimney, can produce certain atmospheric pressure in the cavity structure 13 for flow through the velocity of flow of the smoke and dust flue gas of bowl formula safety cover 1 can play the cushioning effect to the velocity of flow of smoke and dust flue gas, can also prevent simultaneously first layer bowl formula protective layer 12a and second floor bowl formula protective layer 12b produce deformation because of high wind pressure.
In one embodiment, the through hole structures 3 are disposed on both the first bowl-shaped protection layer 12a and the second bowl-shaped protection layer 12b, and the number of the through hole structures 3 disposed on the first bowl-shaped protection layer 12a is smaller than the number of the through hole structures 3 disposed on the second bowl-shaped protection layer 12 b. In this embodiment, by controlling the number of the through hole structures 3 in the first bowl-shaped protective layer 12a and the second bowl-shaped protective layer 12b, the air pressure in the cavity structure 13 can be controlled, and the flow rate of the smoke and dust entering the bowl-shaped protective cover 1 is further controlled.
In one embodiment, the first bowl-shaped protection layer 12a and the second bowl-shaped protection layer 12b are detachably fastened together. So set up, can conveniently be right bowl formula safety cover 1 cleans, prevents that the corrosive substance who carries in the smoke and dust flue gas from to bowl formula safety cover 1 produces the corruption.
In one embodiment, the bowl-shaped protective cover 1 is detachably connected to the front end of the sampling gun. So set up can with bowl formula safety cover 1 is installed when needs make, and dismantles when need not using, and the design is humanized more and convenient.
In the following, the fixed pollution source is a chimney, and the inside of the chimney is a flue for smoke and dust, and the smoke and dust flows from bottom to top in the chimney. The invention is explained on a smoke and dust flue gas channel: the humidity sensor is arranged at the proper position in the axis of the bowl-type protective cover, smoke and dust axially pass through the bowl-type protective cover and are disturbed by the first layer of bowl-type protective layer and the second layer of bowl-type protective layer, so that the aim of reducing the wind speed is fulfilled, and the humidity sensor is safe and reliable. When working condition detection or sampling is carried out on smoke dust and smoke gas of a chimney, the smoke dust and smoke gas axially passes through the bowl-type protective cover and is blocked by the first bowl-type protective layer, vertical wind is scattered, a first part of wind is blown out along the through hole structure of the first bowl-type protective layer, and the other part of wind is blown out along the edge of the first bowl-type protective layer, so that the flow velocity of part of smoke dust and smoke gas is weakened, and the flow velocity of smoke gas at the position of the humidity sensor is reduced; the first part of wind continuously upwards meets the obstruction of the second layer of bowl-type protective layer, the vertical wind is further scattered, at the moment, part of wind blows out along the through hole structure of the second layer of bowl-type protective cover and returns to the smoke flue gas flow channel again to continue to flow upwards, the other part of wind forms certain air pressure in the cavity structure, and can flow out from the through hole of the second layer of bowl-type protective layer to continue to flow upwards, or flow speed of part of smoke flue gas is offset again from the through hole of the first layer of bowl-type protective layer, so that the flow speed of the smoke flue gas at the position of the humidity sensor is further reduced, the purpose of protecting the humidity sensor is achieved, and the accuracy of data acquisition is improved.
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 bowl formula protection device's smoke and dust flue gas sampling check out test set, 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: bowl formula safety cover and humidity transducer, the bowl mouth of bowl formula safety cover just runs through to the direction setting that smoke and dust flue gas flows the internal surface and the surface of bowl formula safety cover are equipped with the through-hole structure, humidity transducer locates the inside of bowl formula safety cover, smoke and dust flue gas passes through the flow direction of bowl mouth in the bowl formula safety cover, and pass through the through-hole structure flows outside the bowl formula safety cover.
2. The smoke and dust and smoke sampling and detecting device with the bowl-type protecting device according to claim 1, wherein the bowl-type protecting cover comprises a first bowl-type structure layer and a second bowl-type protecting layer, the second bowl-type protecting layer is arranged above the first bowl-type protecting layer, the arc curvature of the first bowl-type protecting layer is smaller than that of the second bowl-type protecting layer, and a crescent-shaped cavity structure is formed between the first bowl-type protecting layer and the second bowl-type protecting layer.
3. The smoke and dust and smoke sampling and detecting equipment with the bowl-type protecting device according to claim 2, wherein the through hole structures are arranged on both the first bowl-type protecting layer and the second bowl-type protecting layer, and the number of the through hole structures arranged on the first bowl-type protecting layer is smaller than that of the through hole structures arranged on the second bowl-type protecting layer.
4. The smoke and dust sampling and detecting equipment with the bowl-type protecting device as claimed in claim 3, wherein the first bowl-type protecting layer and the second bowl-type protecting layer are detachably fastened together.
5. The fume and smoke sampling and detecting device with the bowl type protecting device as claimed in any one of claims 1 to 4, wherein the bowl type protecting cover is detachably connected to the front end of the sampling gun.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010971775.9A CN111965311A (en) | 2020-09-16 | 2020-09-16 | Smoke and dust flue gas sampling check out test set of taking bowl formula protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010971775.9A CN111965311A (en) | 2020-09-16 | 2020-09-16 | Smoke and dust flue gas sampling check out test set of taking bowl formula protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111965311A true CN111965311A (en) | 2020-11-20 |
Family
ID=73391854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010971775.9A Withdrawn CN111965311A (en) | 2020-09-16 | 2020-09-16 | Smoke and dust flue gas sampling check out test set of taking bowl formula protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111965311A (en) |
-
2020
- 2020-09-16 CN CN202010971775.9A patent/CN111965311A/en not_active Withdrawn
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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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201120 |