CN109269664A - A kind of temperature measuring device for hearth and boiler - Google Patents

A kind of temperature measuring device for hearth and boiler Download PDF

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Publication number
CN109269664A
CN109269664A CN201811221593.9A CN201811221593A CN109269664A CN 109269664 A CN109269664 A CN 109269664A CN 201811221593 A CN201811221593 A CN 201811221593A CN 109269664 A CN109269664 A CN 109269664A
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China
Prior art keywords
thermometric
temperature
connecting pipe
pipeline
hearth
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CN201811221593.9A
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Chinese (zh)
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CN109269664B (en
Inventor
邓菲
胡方朝
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Shanghai Institute of Technology
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Shanghai Institute of Technology
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01KMEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00

Abstract

The invention discloses a kind of temperature measuring device for hearth, including thermometric pipeline, and circulation has thermometric medium in thermometric pipeline;First temperature sensing unit and data processing unit, data processing unit acquire the temperature of the thermometric medium of the outlet of thermometric pipeline, and calculate fire box temperature according to the inlet temperature of the thermometric medium of setting.The temperature measuring device for hearth can measure large range of temperature in boiler furnace, and measurement result is more accurate, reliable.

Description

A kind of temperature measuring device for hearth and boiler
Technical field
The invention belongs to boiler for producing apparatus field more particularly to a kind of temperature measuring device for hearth and boiler.
Background technique
With the needs of era development, demand of the society to electricity is increasing, and a part of source of the electricity in power plant In boiler combustion.Boiler is a kind of energy conversion, and the heat of burning is mainly converted to electric energy by energy, from And outwardly export, it satisfies social needs.Currently, most of boiler that China uses all is the large and medium-sized type of furnace, volume is general It is larger, it takes up a large area, has a particular requirement to installation environment, pot is often installed without specific place by some small-sized enterprises Furnace has certain requirement simultaneously for furnace temperature again, and large-sized boiler is caused to be unable to satisfy the demand of such enterprise, and large-scale pot That there is also heating speeds is slow for furnace, and the thermal efficiency is lower, the defect that energy consumption is high.Therefore, the hair to avoid failure or contingency Raw, rationally monitoring temperature change in burner hearth in real time using effective method becomes a part indispensable in combustion process.
Currently used temperature measuring device for hearth has thermocouple, infrared thermal imaging, radiant-energy thermometer etc..Using thermocouple Contact temperature-measuring method, interference can be brought to measurand, and the range measured is limited only to a little, be unable to measure entire burner hearth The temperature of interior solid space;The projection temperature of flame is limited only to using the temperature of infrared thermal imaging and various types of radiation pyrometer measures Degree, measurement range can not cover entire burner hearth.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of temperature measuring device for hearth and boiler, fire box temperature measurements Device can measure large range of temperature in boiler furnace, and measurement result is more accurate, reliable.
To solve the above problems, the technical solution of the present invention is as follows:
A kind of temperature measuring device for hearth, comprising:
Thermometric pipeline, the thermometric pipeline are arranged in the burner hearth of the boiler, and circulation has survey in the thermometric pipeline Warm medium;
First temperature sensing unit is set to the outlet of the thermometric pipeline, for detecting going out in the thermometric pipeline The temperature of the thermometric medium at mouthful, is denoted as Outlet Temperature value;And
Data processing unit, for acquiring the Outlet Temperature value, and the inlet temperature of the thermometric medium according to setting Calculate the fire box temperature.
The embodiment provided according to the present invention further includes the second temperature sensing list for being set to the entrance of the thermometric pipeline Member, the temperature of the thermometric medium for detecting the inlet in the thermometric pipeline;
The data processing unit also acquires the temperature value of the second temperature measuring unit detection as inlet temperature.
The embodiment provided according to the present invention, further includes: the first connecting pipe, cooling unit, the second connecting pipe;
The first port of first connecting pipe is connect with the outlet of the thermometric pipeline;
The cooling unit is used to cool down the thermometric medium in first connecting pipe;
The first port of second connecting pipe is connect with the entrance of the thermometric pipeline, second connecting pipe Second port receives the cooling unit thermometric medium after cooling.
The embodiment provided according to the present invention further includes third connecting pipe, the first port of the third connecting pipe It is connect with the second port of first connecting pipe, to receive cooling unit thermometric medium after cooling;
The second port of the third connecting pipe is connect with the second port of second connecting pipe, will be described cold But unit thermometric media flow after cooling is to second connecting pipe.
The embodiment provided according to the present invention further includes air pump unit,
Second connecting pipe further includes third port, and the third port is equipped with the air pump valve of the air pump unit Door.
The embodiment provided according to the present invention, the outlet side of the entrance side of the thermometric pipeline and/or the thermometric pipeline Equipped with rotating mechanism, wherein one end is connected for the rotation section of the rotating mechanism and the thermometric pipeline.
It is additionally provided in the embodiment provided according to the present invention, second connecting pipe and/or the third connecting pipe Flow control valve.
The embodiment provided according to the present invention, the thermometric pipeline is U-shaped pipe.
The embodiment provided according to the present invention, the thermometric medium is air.
A kind of boiler, the temperature measuring device for hearth as described in above-mentioned any one embodiment.
The present invention due to using the technology described above, makes it have the following advantages that and actively imitate compared with prior art Fruit:
1) temperature measuring device for hearth in one embodiment of the invention is arranged in the burner hearth of boiler by using thermometric pipeline Interior, circulation has thermometric medium in thermometric pipeline, and since thermometric pipeline runs through burner hearth, most of range can be to temperature tube in burner hearth Road carries out heat radiation or heat transfer, therefore can accurately measure burner hearth by the temperature change of the thermometric medium in thermometric pipeline Interior temperature.
2) rotation section of the rotating mechanism in one embodiment of the invention can control thermometric pipeline and turn in the burner hearth of boiler It is dynamic, so that the first temperature sensing unit is detected the temperature of different location in the burner hearth of the boiler.
3) cooling unit in one embodiment of the invention cools down the thermometric medium in the first connecting pipe, and passes through Third connecting pipe flows to the second connecting pipe, and the entrance finally by thermometric pipeline enters in the burner hearth of boiler.It can be right Thermometric medium is recycled, save the cost.
4) the air pump unit in one embodiment of the invention is connected with the third port of the second connecting pipe, can be cooling single Member thermometric medium after cooling enters thermometric pipeline by the second connecting pipe and provides driving force.
Detailed description of the invention
Fig. 1 is a kind of temperature measuring device for hearth structural schematic diagram of the invention;
Fig. 2 is a kind of system flow chart of temperature measuring device for hearth of the invention;
The temperature change of the inlet and outlet through pipeline when Fig. 3 is is 20 degrees Celsius through the air themperature of conduit air inlet With the fire box temperature variation relation curve of boiler.
Description of symbols:
1: the first connecting pipe;2: thermometric pipeline;3: third connecting pipe;4: second temperature sensing unit;5: the first temperature Spend sensing unit;6: cooling unit;7: noise elimination part;8: air pump unit;9: air pump valve;10: data processing unit;11: the second Connecting pipe.
Specific embodiment
It is further detailed to a kind of temperature measuring device for hearth work proposed by the present invention below in conjunction with the drawings and specific embodiments It describes in detail bright.According to following explanation and claims, advantages and features of the invention will be become apparent from.
Embodiment 1
Referring to Fig. 1, in one embodiment, a kind of temperature measuring device for hearth, including being arranged in the burner hearth of boiler Thermometric pipeline 2, and circulation has thermometric medium in thermometric pipeline 2;It is set to the first temperature sensing list of the outlet of thermometric pipeline 2 Member 5, the temperature of the thermometric medium for detecting the exit in thermometric pipeline 2 is denoted as Outlet Temperature value;And for acquiring The data processing unit 10 of Outlet Temperature value, and fire box temperature is calculated according to the inlet temperature of the thermometric medium of setting.Number The relationship song of the fire box temperature of boiler is drawn according to the temperature value of the thermometric medium of the inlet and outlet of thermometric pipeline 2 according to processing unit 10 Line.Preferably, thermometric medium selects air, and certainly, in other embodiments, it is warm that thermometric medium selects boiling point to burn in boiler furnace Liquid in the range of degree, also belongs to protection scope of the present invention.Thermometric pipeline 2 selects U-shaped pipe, certainly, other embodiments In, thermometric pipeline 2 selects other bending pipelines, also belongs to protection scope of the present invention.
It is appreciated that most of range can carry out heat to thermometric pipeline 2 in burner hearth since thermometric pipeline 2 runs through burner hearth Radiation or heat transfer, therefore the temperature in burner hearth can be accurately measured by the temperature change of the thermometric medium in thermometric pipeline 2 Degree, specifically, the first temperature sensing unit 5 detection circulation in temperature measuring device for hearth provided in this embodiment is in temperature tube The temperature of thermometric medium in road 2, and it is denoted as Outlet Temperature value, data processing unit 10 acquires the exit of thermometric pipeline 2 The temperature of thermometric medium calculates fire box temperature according to the inlet temperature of the thermometric medium of setting.Fire box temperature measurement dress The fire box temperature that can measure boiler is set, and real-time monitoring is carried out to the fire box temperature of boiler.
Further, in this embodiment temperature measuring device for hearth in be set to thermometric pipeline 2 entrance second temperature Sensing unit 4 is spent, is able to detect the temperature of the thermometric medium of the inlet in thermometric pipeline 2, data processing unit 10 also acquires The temperature value that second temperature measuring unit 4 detects is as inlet temperature;The first port and thermometric pipeline of first connecting pipe 1 2 outlet connection, thermometric medium enter cooling unit 6 by the first connecting pipe 1, and cooling unit 6 carries out thermometric medium cold But, thermometric medium after cooling flows into thermometric pipeline 2 finally by the second connecting pipe 11 connecting with the entrance of thermometric pipeline 2 In.Wherein, cooling unit 6 includes condensation chamber, heat-conducting unit and protection location, can be cooled down to thermometric medium, cooling The temperature value of the inlet of the thermometric pipeline 2 acquired to data processing unit 10.Meeting when thermometric medium cooling due to cooling unit 6 It makes a noise, noise pollution is generated to surrounding and is disappeared so the temperature measuring device for hearth in the present embodiment further includes noise elimination part 7 Line 7 can eliminate the noise issued during the cooling thermometric medium of cooling unit 6.
Temperature measuring device for hearth in the present embodiment further includes third connecting pipe 3, the first end of third connecting pipe 3 Mouth is connect with the second port of the first connecting pipe 1, to receive the thermometric medium after cooling of cooling unit 6;Third connecting pipe 3 Second port connect with the second port of the second connecting pipe 11, extremely by the thermometric media flow after cooling of cooling unit 6 In second connecting pipe 11.Further, flow control is additionally provided in the second connecting pipe 11 and/or third connecting pipe 3 Valve (does not mark) in figure, can control the flow and speed for flowing into the thermometric medium of thermometric pipeline 2.
Cooling unit 6 in the present embodiment cools down the thermometric medium in the first connecting pipe 1, and is connected by third Adapter tube road 3 flows to the second connecting pipe 11, and the entrance finally by thermometric pipeline 2 enters in the burner hearth of boiler.It can be to survey Warm medium is recycled, save the cost.The noise issued when noise elimination part 7 is to the cooling thermometric medium of cooling unit 6 disappears Sound avoids polluting the environment.
Generally, thermometric medium flows into the entrance of thermometric pipeline 2 by the second connecting pipe 11 and enters the burner hearth of boiler When, need certain power.Second connecting pipe 11 further includes third port, and the of air pump unit 8 and the second connecting pipe 11 Three ports are connected by air pump valve 9, and air pump unit 8 can control currency and speed of the thermometric medium in thermometric pipeline 2 Degree, and circulation power is provided for the circulation of the thermometric medium in burner hearth temperature measuring equipment, air pump valve 9 can control air pump unit 8 In flow.
The temperature in burner hearth in order to more accurately measure boiler, it should measure the temperature of different location in the burner hearth of boiler It spends, the entrance side of the thermometric pipeline 2 in the present embodiment and/or the outlet side of thermometric pipeline 2 are equipped with rotating mechanism and (do not mark in figure Out), wherein one end is connected for the rotation section (not marking in figure) of rotating mechanism and thermometric pipeline 2.It is examined in the first temperature sensing unit 5 It surveys in the state of the temperature value of the thermometric medium of the outlet of thermometric pipeline 2, the circle number for rotating thermometric pipeline 2 is consistent, energy The first temperature sensing unit 5 is enough set to detect the temperature of different location in the burner hearth of the boiler.
Specifically detection process are as follows: the rotation section of rotating mechanism rotates thermometric pipeline 2 in burner hearth, the first temperature sensing Unit 5 detects the temperature of the thermometric medium in the exit of thermometric pipeline 2, and is denoted as Outlet Temperature value, and data processing unit 10 is adopted The temperature for collecting the thermometric medium in the exit of thermometric pipeline 2 calculates flake hearth-tapping according to the inlet temperature of the thermometric medium of setting Temperature, then thermometric medium flows into cooling unit 6 by the first connecting pipe 1 and is cooled down, and is cooled to data processing unit 10 The temperature value of the inlet of the thermometric pipeline 2 of acquisition, what noise elimination part 7 generated during cooling down thermometric medium to cooling unit 6 Noise carries out noise reduction, flows into third connecting pipe 3 through the thermometric medium after cooling of cooling unit 6, air pump unit 8 pushes thermometric to be situated between Matter enters thermometric pipeline 2 by the second connecting pipe 11, and the first temperature sensing unit 4 detects the thermometric of the entrance of thermometric pipeline 2 The temperature of medium, is recycled with this, carries out real-time monitoring to the fire box temperature of boiler.
It is the flow chart of temperature measuring device for hearth referring to Fig. 2, Fig. 2.First temperature sensing unit 5 detects thermometric pipeline 2 Outlet thermometric medium temperature, second temperature sensing unit 4 detect thermometric pipeline 2 entrance thermometric medium temperature, The temperature for the thermometric medium that data processing unit 10 is transmitted according to the first temperature sensing unit 4 and second temperature sensing unit 5 Value draws the relation curve of boiler hearth temperature.Wherein, the first connecting pipe 1, the second connecting pipe 11, third connecting pipe 3, cooling unit 6 and air pump unit 8 can utilize air circulation, reduce the pollution to environment.
Referring to Fig. 3, C1 is the temperature of the thermometric medium of the entrance of thermometric pipeline 2;C2 is the thermometric of the outlet of thermometric pipeline 2 The temperature of medium;C is the temperature of a certain position of boiler furnace;C2-C1 is the temperature for the thermometric medium that thermometric pipeline 2 is imported and exported Difference;T1 is the time of the temperature of the thermometric medium for the entrance that the second sensing unit 4 detects thermometric pipeline 2, and T2 is that the first sensing is single Member 5 detects the time of the temperature of the thermometric medium of the outlet of thermometric pipeline 2, and horizontal axis is that the thermometric of the inlet and outlet of thermometric pipeline 2 is situated between The temperature change value of matter, vertical pivot are the temperature value of a certain position of boiler furnace.
In the state that the circle number that driving thermometric pipeline 2 rotates in boiler furnace in the rotation section of rotating mechanism is constant, the One temperature sensing unit 5 detects that the temperature C2 of the thermometric medium of the gas outlet of thermometric pipeline 2, cooling unit 6 will be through temperature tubes The temperature of thermometric medium behind the outlet in road 2 is cooled to 20 degrees Celsius, calculates the disengaging of thermometric pipeline 2 in the T1-T2 period The temperature change value C2-C1 of the thermometric medium of mouth.It by multi collect and calculates, draws out in the T1-T2 period, boiler furnace The changing rule of the temperature of the thermometric medium of interior a certain position temperature and the inlet and outlet of thermometric pipeline 2.The inlet and outlet of thermometric pipeline 2 Thermometric medium temperature gap it is bigger, the air themperature of a certain position is higher in corresponding boiler furnace.
Embodiment 2
Based on the same inventive concept, the present invention also provides a kind of boilers, measure dress including the fire box temperature in embodiment 1 It sets.
A kind of boiler provided in this embodiment, can be accurate by using the temperature measuring device for hearth in embodiment 1 Measure the temperature in flake hearth-tapping.
Embodiments of the present invention are explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations Mode.Even if to the present invention, various changes can be made, if these variations belong to the model of the claims in the present invention and its equivalent technologies Within enclosing, then still fall within the protection scope of the present invention.

Claims (10)

1. a kind of temperature measuring device for hearth characterized by comprising
Thermometric pipeline, the thermometric pipeline are arranged in the burner hearth of the boiler, and circulation has thermometric Jie in the thermometric pipeline Matter;
First temperature sensing unit is set to the outlet of the thermometric pipeline, for detecting the exit in the thermometric pipeline The thermometric medium temperature, be denoted as Outlet Temperature value;And
Data processing unit is calculated for acquiring the Outlet Temperature value, and according to the inlet temperature of the thermometric medium of setting The fire box temperature out.
2. temperature measuring device for hearth as described in claim 1, which is characterized in that further include being set to the thermometric pipeline The second temperature sensing unit of entrance, the temperature of the thermometric medium for detecting the inlet in the thermometric pipeline;
The data processing unit also acquires the temperature value of the second temperature measuring unit detection as inlet temperature.
3. temperature measuring device for hearth as described in claim 1, which is characterized in that further include: the first connecting pipe, it is cooling single Member, the second connecting pipe;
The first port of first connecting pipe is connect with the outlet of the thermometric pipeline;
The cooling unit is used to cool down the thermometric medium in first connecting pipe;
The first port of second connecting pipe is connect with the entrance of the thermometric pipeline, and the second of second connecting pipe Port receives the cooling unit thermometric medium after cooling.
4. temperature measuring device for hearth as claimed in claim 3, which is characterized in that it further include third connecting pipe, described The first port of three connecting pipes is connect with the second port of first connecting pipe, after receiving the cooling unit cooling Thermometric medium;
The second port of the third connecting pipe is connect with the second port of second connecting pipe, will be described cooling single Member thermometric medium after cooling is delivered to second connecting pipe.
5. temperature measuring device for hearth as described in claim 1, which is characterized in that it further include air pump unit,
Second connecting pipe further includes third port, and the third port is equipped with the air pump valve of the air pump unit.
6. temperature measuring device for hearth as claimed in claim 2, which is characterized in that the entrance side of the thermometric pipeline and/or The outlet side of the thermometric pipeline is equipped with rotating mechanism, and wherein one end is solid for the rotation section of the rotating mechanism and the thermometric pipeline Even.
7. temperature measuring device for hearth as claimed in claim 4, which is characterized in that second connecting pipe and/or described Flow control valve is additionally provided in third connecting pipe.
8. temperature measuring device for hearth as described in claim 1, which is characterized in that the thermometric pipeline is U-shaped pipe.
9. temperature measuring device for hearth as described in claim 1, which is characterized in that the thermometric medium is air.
10. a kind of boiler, which is characterized in that including temperature measuring device for hearth described in any one of claim 1-9.
CN201811221593.9A 2018-10-19 2018-10-19 Furnace temperature measuring device and boiler Active CN109269664B (en)

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CN109269664B CN109269664B (en) 2020-10-09

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109900389A (en) * 2019-03-14 2019-06-18 中北大学 A kind of grout sleeve slurry temperature measuring device and its measurement method

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Publication number Priority date Publication date Assignee Title
CN1704740A (en) * 2004-05-28 2005-12-07 黄瑞湄 Heat exchange energy-saving efficient metering method and apparatus
CN101440703A (en) * 2007-11-20 2009-05-27 辽宁石油化工大学 Method and apparatus for pipeline exploding early warning and operation control of oil extraction steam-filling boiler
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CN104458032A (en) * 2014-12-08 2015-03-25 苏州创泰电子有限公司 Superheat degree measurement method and device
CN207472452U (en) * 2017-12-12 2018-06-08 郑州大学 A kind of novel electron furnace temperature detector
JP6362971B2 (en) * 2014-09-05 2018-07-25 三菱日立パワーシステムズ株式会社 Tube temperature measuring device and method for manufacturing tube temperature measuring device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1704740A (en) * 2004-05-28 2005-12-07 黄瑞湄 Heat exchange energy-saving efficient metering method and apparatus
CN101440703A (en) * 2007-11-20 2009-05-27 辽宁石油化工大学 Method and apparatus for pipeline exploding early warning and operation control of oil extraction steam-filling boiler
JP6362971B2 (en) * 2014-09-05 2018-07-25 三菱日立パワーシステムズ株式会社 Tube temperature measuring device and method for manufacturing tube temperature measuring device
CN204202783U (en) * 2014-10-28 2015-03-11 魏星 A kind of boiler of organic heat carrier heat self-measuring device
CN104458032A (en) * 2014-12-08 2015-03-25 苏州创泰电子有限公司 Superheat degree measurement method and device
CN207472452U (en) * 2017-12-12 2018-06-08 郑州大学 A kind of novel electron furnace temperature detector

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109900389A (en) * 2019-03-14 2019-06-18 中北大学 A kind of grout sleeve slurry temperature measuring device and its measurement method

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