CN110296771B - High-temperature flue gas temperature measurement water-cooling protection device - Google Patents
High-temperature flue gas temperature measurement water-cooling protection device Download PDFInfo
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- CN110296771B CN110296771B CN201910605257.2A CN201910605257A CN110296771B CN 110296771 B CN110296771 B CN 110296771B CN 201910605257 A CN201910605257 A CN 201910605257A CN 110296771 B CN110296771 B CN 110296771B
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000003546 flue gas Substances 0.000 title claims abstract description 32
- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 24
- 238000001816 cooling Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 71
- 230000001681 protective effect Effects 0.000 claims abstract description 45
- 238000000605 extraction Methods 0.000 claims description 8
- 239000000779 smoke Substances 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000010248 power generation Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/08—Protective devices, e.g. casings
- G01K1/12—Protective devices, e.g. casings for preventing damage due to heat overloading
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
- G01K13/024—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/12—Thermometers specially adapted for specific purposes combined with sampling devices for measuring temperatures of samples of materials
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a high-temperature flue gas temperature measurement water-cooling protection device which comprises a temperature measurement element, a first protection sleeve and a second protection sleeve, wherein the second protection sleeve comprises an outer sleeve and an inner sleeve, a first cavity is formed between the outer sleeve and the inner sleeve, a second cavity is formed between the inner sleeve and the first protection sleeve, a rotary chamber which is communicated with the first cavity and the second cavity is further arranged between the inner sleeve and the first protection sleeve, a water inlet is formed in the outer sleeve, and an outer water outlet and an inner water outlet are respectively formed in the outer sleeve and the inner sleeve. Through putting into first protective sleeve with temperature measuring element, can protect temperature measuring element safety, rivers are got into from the water inlet, form hydrologic cycle in the cavity, last follow interior delivery port and go out the mouth of a river outflow, directly carry out the water-cooling to first protective sleeve and cool down, reduce the temperature in the first protective sleeve, prevent temperature measuring element because of high temperature warp to effectively protect temperature measuring element's safe in utilization, realized the safe temperature measurement to high temperature flue gas.
Description
Technical Field
The invention relates to the field of temperature detection, in particular to a high-temperature flue gas temperature measurement water-cooling protection device.
Background
At present, thermal power generation is the most dominant power source, and the combustion efficiency of a boiler of a thermal power plant directly determines the power generation efficiency, so that the thermal power plant needs to measure the temperature of a boiler furnace at regular time to judge the combustion state in the boiler, and the temperature in the boiler furnace is generally above 850 ℃, so that the thermal power plant has higher requirements on a temperature measuring device.
The non-contact temperature measuring device mainly measures through an infrared thermometer, but because the smoke in the boiler hearth is gaseous light, the temperature distribution is uneven, the components are not fixed, and the measurement error is large due to the existence of fly ash particle radiation.
The conventional contact type temperature measuring device mainly measures through a telescopic thermometer, but when the smoke temperature in a boiler furnace reaches a certain value, the telescopic thermometer must withdraw from the boiler furnace in order to protect the connection and supporting parts of the temperature measuring element in the telescopic thermometer, so that the measuring effect is poor. Therefore, how to break the limit of the temperature measuring device in the boiler furnace and improve the accuracy and safety of the temperature measurement of the boiler furnace is a problem to be solved urgently.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art and provides a high-temperature flue gas temperature measurement water-cooling protection device.
The invention provides a high-temperature flue gas temperature measurement water-cooling protection device, which comprises: the temperature measuring device comprises a temperature measuring element and a first protective sleeve, wherein the temperature measuring element is arranged in a first protective sleeve, one end of the first protective sleeve is provided with an opening, the outer side of the first protective sleeve is provided with a second protective sleeve, the second protective sleeve comprises an outer sleeve and an inner sleeve, the outer sleeve and the inner sleeve and the first protective sleeve are both fixed through connecting blocks, a first cavity is formed between the outer sleeve and the inner sleeve, a second cavity is formed between the inner sleeve and the first protective sleeve, and one end of the inner sleeve is provided with an opening for communicating the first cavity with the second cavity; the second protection sleeve is provided with a water inlet on the outer sleeve, the second protection sleeve is provided with an outer water outlet and an inner water outlet on the outer sleeve and the inner sleeve respectively, and the outer water outlet is connected with the inner water outlet.
The high-temperature flue gas temperature measurement water-cooling protection device has the following beneficial effects:
through putting into first protection sleeve with temperature measurement component, can effectively protect temperature measurement component's safe in utilization, the outside at first protection sleeve still is provided with the second protection sleeve simultaneously, the second protection sleeve divide into outer sleeve and inner skleeve again, and form first cavity and second cavity, rivers can be followed the water inlet and get into, and form hydrologic cycle in first cavity and second cavity, last follow interior delivery port and outlet outflow, directly carry out the water-cooling to first protection sleeve and cool down, can effectively reduce the temperature in the first protection sleeve, prevent temperature measurement component warp because of the high temperature, thereby effectively protect temperature measurement component's safe in utilization, realized the safe temperature measurement to high temperature flue gas.
Further, the water inlet is positioned on the outer sleeve opposite to the water outlet.
Further, the size of the outlet is greater than or equal to the size of the inner outlet.
Further, the protective sleeve ring is arranged outside the opening.
Further, the support device is connected with the second protection sleeve and comprises at least one vertical plate, and a plurality of slotted holes are formed in the vertical plate.
Further, the portable smoke analyzer is connected with the first protective sleeve.
Further, the shape of the first protection sleeve corresponds to that of the second protection sleeve, and the first protection sleeve and the second protection sleeve are cylindrical, rectangular or polygonal.
Drawings
The invention is further described below with reference to the drawings and examples;
FIG. 1 is a schematic diagram of an embodiment of a water-cooling protection device for measuring temperature of high-temperature flue gas;
FIG. 2 is a schematic top view cross-sectional profile of an embodiment of the high temperature flue gas temperature measurement water cooling protection device of the present invention;
FIG. 3 is a schematic side view of a water-cooled protection device for measuring temperature of high temperature flue gas according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of an embodiment of a water-cooled protection device with a protection collar for measuring temperature of high temperature flue gas;
FIG. 5 is a schematic diagram of an embodiment of a water-cooled protection device with support device for measuring temperature of high temperature flue gas;
FIG. 6 is a schematic view showing a specific structure of the supporting device in FIG. 5;
fig. 7 is a schematic structural diagram of an embodiment of a water-cooling protection device for measuring temperature of high-temperature flue gas with an extraction type flue gas analyzer.
Detailed Description
At present, thermal power generation is the most dominant power source, and the combustion efficiency of a boiler of a thermal power plant directly determines the power generation efficiency, so that the thermal power plant needs to measure the temperature of a boiler furnace at regular time to judge the combustion state in the boiler, and the temperature in the boiler furnace is generally above 850 ℃, so that the thermal power plant has higher requirements on a temperature measuring device.
The non-contact temperature measuring device mainly measures through an infrared thermometer, but because the smoke in the boiler hearth is gaseous light, the temperature distribution is uneven, the components are not fixed, and the measurement error is large due to the existence of fly ash particle radiation.
The conventional contact type temperature measuring device mainly measures through a telescopic thermometer, but when the smoke temperature in a boiler furnace reaches a certain value, the telescopic thermometer must withdraw from the boiler furnace in order to protect the connection and supporting parts of the temperature measuring element in the telescopic thermometer, so that the measuring effect is poor. Therefore, how to break the limitation of the temperature measuring device and improve the accuracy and safety of temperature measurement is a urgent problem to be solved.
On the other hand, due to the limitation of the temperature resistance of the metal material, all the current extraction type flue gas analyzers are arranged on the tail low-temperature flue, cannot directly sample and analyze high-temperature flue gas, cannot timely react to the concentration change of pollutants after the change of the combustion working condition, has poor hysteresis of the measurement result, and is not beneficial to guiding the combustion adjustment of the boiler.
In order to solve the technical problems in the prior art, the invention provides a high-temperature flue gas temperature measurement water-cooling protection device.
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1 to 3, an embodiment of the present invention provides a high temperature flue gas temperature measurement water cooling protection device, including: the temperature measuring element 100 and the first protective sleeve 200, the temperature measuring element 100 is placed in the first protective sleeve 200, an opening 210 is arranged at one end of the first protective sleeve 200, a second protective sleeve 300 is arranged at the outer side of the first protective sleeve 200, the second protective sleeve 300 comprises an outer sleeve 310 and an inner sleeve 320, a first cavity is arranged between the outer sleeve 310 and the inner sleeve 320 and between the inner sleeve 320 and the first protective sleeve 200 through a connecting block 330, a second cavity is arranged between the inner sleeve 320 and the outer sleeve 310, and an opening is arranged at one end of the inner sleeve 320 and is used for communicating the first cavity and the second cavity;
the second protection sleeve 300 is provided with a water inlet 400 on the outer sleeve 310, the second protection sleeve 300 is provided with an outer water outlet 510 and an inner water outlet 520 on the outer sleeve 310 and the inner sleeve 320 respectively, and the outer water outlet 510 is connected with the inner water outlet 520.
In this embodiment, the temperature measuring element 100 can be freely placed in the first protection sleeve 200, on one hand, the position of the temperature measuring element 100 in the first protection sleeve 200 can be adjusted, on the other hand, the temperature measuring element 100 can be taken out from the first protection sleeve 200 through the opening 210, and the first protection sleeve 200 can effectively protect the temperature measuring element 100, so that the temperature measuring element 100 is prevented from being completely placed in a high-temperature environment; the outer side of the first protection sleeve 200 is provided with a second protection sleeve 300, and a cavity is created between the first protection sleeve 200 and the second protection sleeve 300 for the passage of water. Meanwhile, the second protection sleeve 300 includes an outer sleeve 310 and an inner sleeve 320, the outer sleeve 310 and the inner sleeve 320 are fixed in mutual position through a connection block 330, so as to prevent shaking, and the inner sleeve 320 and the first protection sleeve 200 are also fixed in mutual position through the connection block 330 positioned at the left end in fig. 2, in this embodiment, the number of the connection blocks 330 is preferably more than three, so that water flow is not blocked, and the outer sleeve 310 and the inner sleeve 320 can be connected and fixed; the outer sleeve 310 and the inner sleeve 320 divide the original cavity into a first cavity and a second cavity, wherein the first cavity is located between the outer sleeve 310 and the inner sleeve 320, and the second cavity is located between the inner sleeve 320 and the first protective sleeve 200. At the same time, at one end of the inner sleeve 320 there is also an opening for communication between the first and second cavities, in this embodiment a swivel chamber 340, which swivel chamber 340 is provided for the passage of water flow from the first cavity to the second cavity or for the passage of water flow from the second cavity to the first cavity.
Meanwhile, the second protection sleeve 300 is provided with a water inlet 400 on the outer sleeve 310, the second protection sleeve 300 is provided with an outer water outlet 510 and an inner water outlet 520 on the outer sleeve 310 and the inner sleeve 320 respectively, and the outer water outlet 510 is connected with the inner water outlet 520. The fire-fighting water pipe is connected with the water inlet 400 to fill water into the device, and the water outlet 510 is connected with the water drain pipe to drain water; the water flow enters from the water inlet 400, flows through the first cavity, flows to the second cavity through the rotary chamber 340, directly cools the first protection sleeve 200, and finally flows out from the inner water outlet 520 and the outer water outlet 510.
In this embodiment, the temperature measuring element 100 is placed in the first protection sleeve 200, so that the use safety of the temperature measuring element 100 can be effectively protected, meanwhile, the second protection sleeve 300 is further provided on the outer side of the first protection sleeve 200, the second protection sleeve 300 is divided into the outer sleeve 310 and the inner sleeve 320, a first cavity and a second cavity are formed, water flow can enter from the water inlet 400, water cooling circulation is performed in the first cavity and the second cavity, finally, water flows out from the inner water outlet 510 and the outer water outlet 520, the temperature of the first protection sleeve 200 can be reduced, so that the use safety of the temperature measuring element 100 placed in the first protection sleeve 200 is effectively protected, deformation of the temperature measuring element 100 due to high temperature is avoided, and the service life of the temperature measuring element 100 is prolonged.
Further, in some embodiments, the positions of the water inlet and the water outlet may be exchanged, for example, an outer sleeve and an inner sleeve are respectively provided with an outer water inlet and an inner water inlet, and the outer sleeve is also provided with a water outlet; the water flow flows into the second cavity from the outer water inlet and the inner water inlet, directly cools the first protective sleeve, flows into the first cavity through the rotary chamber, and finally flows out from the water outlet.
Referring to fig. 1, in some embodiments, the shape of the first protection sleeve 200 corresponds to the shape of the second protection sleeve 300, and both may be cylindrical or rectangular or polygonal, and in this embodiment, it is preferable that both the shape of the first protection sleeve 200 and the shape of the second protection sleeve 300 are cylindrical, and the shape of the first protection sleeve 200 and the shape of the second protection sleeve 300 may be selected according to practical situations, for example, both are rectangular or triangular.
Referring to fig. 1-3, in some embodiments, the water inlet 400 is located on the outer sleeve 310 opposite the water outlet 510 is located on the outer sleeve 310. For example, the water inlet 400 is positioned upward and the water outlet 510 is positioned downward, which facilitates water circulation.
Referring to fig. 1-3, in some embodiments, the size of the outer water outlet 510 is greater than or equal to the size of the inner water outlet 520.
Referring to fig. 4, in some embodiments thereof, a protective collar 600 is further included, the protective collar 600 being disposed outside of the opening 210. Protection can be provided to the temperature sensing element 100.
Referring to fig. 5 and 6, in some embodiments, the protection sleeve further comprises a supporting device 700, the supporting device 700 is connected with the second protection sleeve 300, the supporting device 700 comprises at least one vertical plate 710, and a plurality of slots 720 are formed in the vertical plate 710. The vertical plates 710 can be fixed on the ground, and the distances between every two slots 720 are equal, so that different slots 720 can be selected to support the second protection sleeve 300 according to different site elevations, thereby facilitating the movement and positioning of the second protection sleeve 300.
Referring to fig. 7, in some embodiments thereof, an extraction flue gas analyzer 800 is also included, the extraction flue gas analyzer 800 being connected to the first protective sleeve 200. When the flue gas in the boiler furnace needs to be sampled, the temperature measuring element originally placed in the first protection sleeve 200 can be taken out, the extraction type flue gas analyzer 800 is communicated with the first protection sleeve 200, and the extraction type flue gas analyzer 800 can extract the flue gas from the first protection sleeve 200 and perform relevant analysis.
In summary, the embodiment of the invention provides a high-temperature flue gas temperature measurement water-cooling protection device which can extend into a region with the flue gas temperature of more than 850 ℃ of a boiler furnace of a thermal power plant to measure temperature. The temperature measuring element can be taken out of the first protective sleeve; the first protective sleeve is provided with a second protective sleeve outside, the second protective sleeve is divided into an outer sleeve and an inner sleeve, the first protective sleeve is provided with a first cavity and a second cavity, the second protective sleeve is provided with a water inlet on the outer sleeve, the second protective sleeve is provided with an outer water outlet and an inner water outlet on the outer sleeve and the inner sleeve respectively, the water inlet and the outer water outlet can be connected with nearby fire-fighting pipelines, water flow can flow continuously in the second protective sleeve, the first protective sleeve can be effectively cooled, and therefore the use safety of the temperature measuring element is protected.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (3)
1. The utility model provides a high temperature flue gas temperature measurement water-cooling protection device which characterized in that includes: the temperature measuring device comprises a temperature measuring element (100) and a first protective sleeve (200), wherein the temperature measuring element (100) is placed in the first protective sleeve (200), an opening (210) is formed in one end of the first protective sleeve (200), a second protective sleeve (300) is arranged on the outer side of the first protective sleeve (200), the second protective sleeve (300) comprises an outer sleeve (310) and an inner sleeve (320), the outer sleeve (310) and the inner sleeve (320) and the first protective sleeve (200) are fixed through connecting blocks (330), a first cavity is formed between the outer sleeve (310) and the inner sleeve (320), a second cavity is formed between the inner sleeve (320) and the first protective sleeve (200), and one end of the inner sleeve (320) is provided with an opening for communicating the first cavity with the second cavity; the second protection sleeve (300) is provided with a water inlet (400) on the outer sleeve (310), the second protection sleeve (300) is provided with an outlet (510) and an inner water outlet (520) on the outer sleeve (310) and the inner sleeve (320) respectively, and the outlet (510) is connected with the inner water outlet (520);
the water inlet (400) is positioned on the outer sleeve (310) at a position opposite to the position of the water outlet (510) on the outer sleeve (310);
the size of the outlet (510) is greater than or equal to the size of the inner outlet (520);
the high-temperature flue gas temperature measurement water-cooling protection device further comprises: a protection collar (600), the protection collar (600) being arranged outside the opening (210);
the shape of the first protective sleeve (200) corresponds to the shape of the second protective sleeve (300).
2. The high-temperature flue gas temperature measurement water-cooling protection device according to claim 1, wherein: the support device (700) is connected with the second protection sleeve (300), the support device (700) comprises at least one vertical plate (710), and a plurality of slotted holes (720) are formed in the vertical plate (710).
3. The high-temperature flue gas temperature measurement water-cooling protection device according to claim 1, wherein: the device further comprises an extraction type smoke analyzer (800), wherein the extraction type smoke analyzer (800) is connected with the first protective sleeve (200).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811182244.0A CN109084912A (en) | 2018-10-11 | 2018-10-11 | A kind of removable multi-functional superhigh temperature water cooling temperature measuring equipment |
| CN2018111822440 | 2018-10-11 |
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| Publication Number | Publication Date |
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| CN110296771A CN110296771A (en) | 2019-10-01 |
| CN110296771B true CN110296771B (en) | 2024-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811182244.0A Pending CN109084912A (en) | 2018-10-11 | 2018-10-11 | A kind of removable multi-functional superhigh temperature water cooling temperature measuring equipment |
| CN201910605257.2A Active CN110296771B (en) | 2018-10-11 | 2019-07-05 | High-temperature flue gas temperature measurement water-cooling protection device |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811182244.0A Pending CN109084912A (en) | 2018-10-11 | 2018-10-11 | A kind of removable multi-functional superhigh temperature water cooling temperature measuring equipment |
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| CN (2) | CN109084912A (en) |
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| CN112683067A (en) * | 2020-12-30 | 2021-04-20 | 上海自动化仪表有限公司 | Water cooling device of infrared imaging temperature measurement system of steel furnace |
| CN114812862A (en) * | 2022-05-24 | 2022-07-29 | 新美光(苏州)半导体科技有限公司 | Temperature measuring device and chemical vapor deposition equipment |
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| CN110296771A (en) | 2019-10-01 |
| CN109084912A (en) | 2018-12-25 |
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