CN205717171U - A kind of heater of gas-fired heater - Google Patents
A kind of heater of gas-fired heater Download PDFInfo
- Publication number
- CN205717171U CN205717171U CN201620389315.4U CN201620389315U CN205717171U CN 205717171 U CN205717171 U CN 205717171U CN 201620389315 U CN201620389315 U CN 201620389315U CN 205717171 U CN205717171 U CN 205717171U
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- Prior art keywords
- gas
- control valve
- detecting element
- heater
- burner
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- 238000010438 heat treatment Methods 0.000 claims abstract description 57
- 239000000446 fuel Substances 0.000 claims description 13
- 239000007789 gas Substances 0.000 description 53
- 239000000567 combustion gas Substances 0.000 description 12
- 238000001514 detection method Methods 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000033228 biological regulation Effects 0.000 description 4
- 239000002737 fuel gas Substances 0.000 description 3
- 238000010992 reflux Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 208000035985 Body Odor Diseases 0.000 description 1
- 206010055000 Bromhidrosis Diseases 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 210000001367 artery Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000003462 vein Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Furnace Details (AREA)
Abstract
Embodiment of the present utility model provides the heater of a kind of gas-fired heater, including: multiple heating units, multiple heating units are distributed on the furnace shell of heating furnace；Air line, the outfan of air line is connected with heating unit, and air line is provided with first flow detecting element and air control valve；Gas pipeline, including the first pipeline and second pipe, the outfan of the first pipeline and the outfan of second pipe are all connected with heating unit, and first pipeline be provided with second flow detecting element and the first gas control valve, second pipe is provided with the 3rd flow detecting element, the second gas control valve and gas cut off valve；Controller, controls air control valve, the first gas control valve, the second gas control valve and the aperture of gas cut off valve.Embodiment of the present utility model can make gas-fired heater reach higher temperature uniformity requirement.
Description
Technical field
This utility model relates to heating furnace technical field, particularly to the heater of a kind of gas-fired heater.
Background technology
At present, many industry lines produce and are required for using gas-fired heater (the fuel use of this gas-fired heater
Gaseous fuel, such as natural gas, town gas, coke-stove gas, liquefied petroleum gas etc.), and gas heating
Stove as one of equipment of greater energy consumption in operation, its temperature control the technological requirement according to heating furnace and not to the utmost
Identical.
Wherein, temperature controlled temperature uniformity is closely-related with the temperature range in heating furnace.
Specifically, if furnace temperature is more than more than 1000 DEG C, then temperature uniformity≤30 DEG C, Control for Kiln Temperature are required
Precision≤± 10 DEG C, and general gas-fired heater is attained by this requirement.
If furnace temperature less than 1000 DEG C, then requires temperature uniformity≤15 DEG C, Control for Kiln Temperature precision≤± 5 DEG C,
For reaching this requirement, for gas-fired heater, its heater is accomplished by the highest requirement, such as, add
Thermal has high speed jet function, the layout of burner is more investigated.
If but furnace temperature is less than less than 1000 DEG C (such as less than 950 DEG C), then require temperature uniformity≤10 DEG C,
Control for Kiln Temperature precision≤± 2 DEG C, with regard to currently used gas flow and use the switch quantity of burner, time (arteries and veins
Modulated is burnt) for both controls the method for furnace temp, it is impossible in furnace temperature less than less than 950 DEG C
Time, make gas-fired heater reach the requirement of temperature uniformity≤10 DEG C.
As can be seen here, the temperature uniformity that current gas-fired heater reaches is relatively low.
Utility model content
The purpose of this utility model embodiment is to provide the heater of a kind of gas-fired heater, can make combustion gas
Heating furnace reaches higher temperature uniformity requirement.
In order to achieve the above object, what embodiment of the present utility model provided a kind of gas-fired heater adds hot charging
Put, including:
Multiple heating units, multiple heating units are distributed in heating furnace along the length direction of the body of heater of heating furnace
On furnace shell；
Air line, the outfan of air line is connected with heating unit, and air line is provided with first-class
Amount detecting element and air control valve；
Gas pipeline, gas pipeline includes the first pipeline and second pipe, the outfan of the first pipeline and second
The outfan of pipeline is all connected with heating unit, and the first pipeline is provided with second flow detecting element and first
Gas control valve, second pipe is provided with the 3rd flow detecting element, the second gas control valve and fuel gas shutoff
Valve；
For detecting the detector unit of heating furnace in-furnace temperature；
Controller, controller respectively with detector unit, first flow detecting element, air control valve,
Second flow detecting element, the first gas control valve, the 3rd flow detecting element, the second gas control valve and
Gas cut off valve connects, and receives first-class value, second flow detection that first flow detecting element detects
Element testing to second value, the 3rd flow detecting element detect the 3rd flow value, temperature detection
Temperature value that element testing arrives and the target temperature of heating furnace, control air control valve, the first combustion gas regulation
Valve, the second gas control valve and the aperture of gas cut off valve.
Alternatively, heating unit includes:
Fixed support, fixed support is fixed on furnace shell；
Fine tuning structure, fine tuning structure is fixed on fixed support；
Burner, burner is connected with fine tuning structure, and burner has a default tilt angled down with respect to the horizontal plane,
The outfan of air line is connected with the air intake of burner, the outfan of the first pipeline and second pipe defeated
Go out end to be all connected with the fuel port of burner.
Alternatively, default tilt angled down is 6 degree to 9 degree.
Alternatively, the burner block of burner includes:
One spray-hole, or,
Angle between multiple spray-holes, and the most adjacent two spray-holes is predetermined angle.
Alternatively, predetermined angle is 20 degree to 30 degree.
Alternatively, fine tuning structure includes adjusting bolt and adjustment ring, adjusts bolt and adjustment ring is both secured to solid
On fixed rack, and adjustment bolt and adjustment ring are all connected with burner.
Such scheme of the present utility model has a following beneficial effect:
In embodiment of the present utility model, by the first flow detected according to first flow detecting element
Second value that value, second flow detecting element detect, the 3rd flow detecting element detect the 3rd
Temperature value that flow value, detector unit detect and the target temperature of heating furnace, regulation air regulation
Valve, the first gas control valve, the second gas control valve and the aperture of gas cut off valve, and then control accurately
Air and the ratio of fuel, the heat making heating unit provide to heating furnace more balances, uniformly, so that
Gas-fired heater reaches higher temperature uniformity requirement.
Accompanying drawing explanation
Fig. 1 is the floor map of gas-fired heater in this utility model embodiment；
Fig. 2 is gas-fired heater internal structure and the schematic diagram of heater in this utility model embodiment；
Fig. 3 is this utility model embodiment middle controller and each detecting element, each regulation valve and gas cut off valve
Between connection diagram.
Description of reference numerals:
1, furnace shell；2, air line；3, first flow detecting element；4, air control valve；5 first
Pipeline；6, second pipe；7, second flow detecting element；8, the first gas control valve；9, the 3rd stream
Amount detecting element；10, the second gas control valve；11, gas cut off valve；12, fixed support；13, micro-
Adjust structure；14, burner；15, burner block；16, spray-hole；17, fuel gas source；18, combustion fan；
19, controller；20, detector unit.
Detailed description of the invention
It is more fully described the exemplary embodiment of the disclosure below with reference to accompanying drawings.Although accompanying drawing shows
The exemplary embodiment of the disclosure, it being understood, however, that may be realized in various forms the disclosure and should be by
Embodiments set forth here is limited.On the contrary, it is provided that these embodiments are able to be best understood from this
Open, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
As shown in FIG. 1 to 3, what embodiment of the present utility model provided a kind of gas-fired heater adds hot charging
Putting, this heater includes: multiple heating units, air line 2, gas pipeline, be used for detecting heating
The detector unit 20 of stove in-furnace temperature and controller 19.Wherein, the input of air line 2 with help
Combustion blower fan 18 connects.
Wherein, multiple heating units are distributed in the furnace shell 1 of heating furnace along the length direction of the body of heater of heating furnace
On, the outfan of air line 2 is connected with heating unit, and air line 2 is provided with first flow detection
Element 3 and air control valve 4, gas pipeline includes the first pipeline 5 and second pipe 6, the first pipeline 5
Input and second pipe 6 input all with one for providing the fuel gas source 17 of combustion gas to be connected, first
The outfan of pipeline 5 and the outfan of second pipe 6 are all connected with heating unit, and set on the first pipeline 5
Having second flow detecting element 7 and the first gas control valve 8, second pipe 6 is provided with the 3rd flow detection
Element the 9, second gas control valve 10 and gas cut off valve 11, controller 19 respectively with detector unit
20, first flow detecting element 3, air control valve 4, the 7, first combustion gas of second flow detecting element are adjusted
Joint valve the 8, the 3rd flow detecting element the 9, second gas control valve 10 and gas cut off valve 11 connect, and
First-class value, second flow that controller 19 detects for receiving first flow detecting element 3 detect
The 3rd flow value that second value that element 7 detects, the 3rd flow detecting element 9 detect, temperature
Temperature value that detecting element 20 detects and the target temperature of heating furnace, control air control valve 4, the
One gas control valve the 8, second gas control valve 10 and the aperture of gas cut off valve 11.
Wherein, above-mentioned first-class value refers to the flow of air in air line 2, and second value refers to
The flow of combustion gas in one pipeline 5, the 3rd flow value refers to the flow of combustion gas in second pipe 6, heating furnace
Target temperature refers to the temperature (such as 950 degrees Celsius) that heating furnace is to be reached.It should be noted that
Said temperature detecting element 20 can be thermocouple, and it is mainly come by detection reheating furnace top temperature
Obtaining heating furnace in-furnace temperature, controller noted above 19 can be central processing unit (CPU), and first flow is examined
Surveying element 3 can be mass air flow sensor, second flow detecting element 7 and the 3rd flow detecting element 9
Think gas meter.It is understood that in embodiment of the present utility model, not limiting temperature inspection
Survey element 20, controller 19, second flow detecting element 7 and the particular type of the 3rd flow detecting element 9
Number, it can be adjusted according to actual needs.
Alternatively, in embodiment of the present utility model, above-mentioned heating unit includes: fixed support 12,
Fine tuning structure 13 and burner 14.Wherein, fixed support 12 is fixed on furnace shell 1, and fine tuning structure 13 is solid
On fixed support 12, burner 14 is connected with fine tuning structure 13, and burner 14 has one relative to water
The default tilt angled down of plane, the outfan of air line 2 is connected with the air intake of burner 14, and first
The outfan of pipeline 5 and the outfan of second pipe 6 all fuel ports with burner 14 are connected.
Wherein, the burner block 15 of burner 14 includes a spray-hole 16, or, multiple spray-holes 16,
And if if including multiple spray-hole 16, the angle between the most adjacent two spray-holes 16 is predetermined angle,
This predetermined angle can be 20 degree to 30 degree.It is understood that in embodiment of the present utility model, and
Do not limit the concrete numerical value of this predetermined angle, i.e. it can be adjusted according to actual needs.
It should be noted that each burner 14 in heater is a supplying heat source of heating furnace, and
Each spray-hole 16 of burner 14 has high speed jet function (flow velocity reaches as high as 125 meter per seconds).Its
In, the burning of burner 14 is just fully completed the burning of fuel, burner 14 internal-combustion inside burner 14
High-temperature burning gases, the fluid being converted at a high speed by pressure is spouting from spray-hole 16, and then
The gas exchange of temperature field in furnace is formed the effect of being sufficiently stirred for.
In embodiment of the present utility model, include that with burner block 15 burner 14 of 2 spray-holes 16 is
Example, is expanded on further above-mentioned heater.For each burner 14, due to 2 spray-holes 16
Between be angled (i.e. 2 spray-holes 16 separate the most to the left and right), the overall peace of heating unit simultaneously
Dress mode makes burner 14 have first tilt angled down with respect to the horizontal plane, and (this first tilt angled down is
Angle the most from top to bottom), high-temperature burning gases ejection burner block 15 so at a high speed
After, volume is inhaled partial reflux gas and is flowed into upper furnace space, and has a component velocity downwardly and outwardly,
After the body of wall encountering heating furnace opposite, the air-flow of speed is had the most downwardly and outwardly to be folded to return, high-temp combustion gas
Bromhidrosis stream, by clashing into a laggard step equalizing temperature with furnace wall, returns and forms reflux gas through heating siege
Top, watches on whole furnace profile, and high-temperature injection air-flow and reflux gas form the another of part Guan Bi
The rotary type flow field of part circulation further, thus form a kind of volute type flow field.And due to each burner
14 on two-way (i.e. left and right directions) all form two-way volute type flow field, thus temperature in promoting heating-furnace
The heat exchange of degree field and air-flow exchange, and promote the uniform progress of temperature field in furnace, make gas-fired heater to reach
To higher temperature uniformity requirement.Wherein, the first tilt angled down can be by making fixed support 12 and furnace shell
An angle is kept to realize between 1.
Alternatively, in embodiment of the present utility model, above-mentioned fine tuning structure 13 can include adjust bolt and
Adjustment ring, adjusts bolt and adjustment ring and is both secured on fixed support 12, and adjusts bolt and adjustment ring is equal
It is connected with burner 14.This fine tuning structure 13 (i.e. adjusting bolt and adjustment ring) is mainly used in regulating burner 14
In above-below direction and the position of left and right directions, so that above-mentioned first tilt angled down is adjusted to above-mentioned default angle of declination
Degree, thus avoid, owing to burner 14 itself exists the deviation manufacturing, installing, use, affecting furnace temperature uniform
Property situation occur, it is ensured that gas-fired heater can reach higher temperature uniformity requirement.It should be noted that
For improving the temperature uniformity of gas-fired heater, proving through test of many times research, above-mentioned default tilt angled down can
It it is 6 degree to 9 degree.It is understood that in embodiment of the present utility model, do not limit this and pre-set
The concrete numerical value of degree of tilt, i.e. it can be adjusted according to actual needs.
In embodiment of the present utility model, confirm combustion fan in heating furnace point stove blow-on and operator
18 normally start, gaseous-pressure normal after, operator can put each burner guaranteeing in heater of fighting
14 catch fire and normal combustion, simultaneously operator also can as required in controller 19 scenario earthquake (should
Temperature curve includes the temperature that heating furnace is to be reached) and temperature retention time, and then it is easy to controller 19
Control air control valve the 4, first gas control valve the 8, second gas control valve 10 and gas cut off valve 11
Aperture.
Specifically, when temperature-rise period starts, controller 19 can calculate initial gas flow, and root
According to the gas flow on the first pipeline 5 that second flow detecting element 7 detects, the 3rd flow detecting element
The air mass flow that the gas flow on second pipe 6 that 9 detect, first flow detecting element 3 detect
And PI controls logic, control air control valve the 4, first gas control valve the 8, second combustion gas accurately and adjust
Joint valve 10 and the aperture of gas cut off valve 11, carry out Flow-rate adjustment.More specifically, when gas flow is bigger
Time, the first pipeline 5 and second pipe 6 can be opened for burner 14 simultaneously and provide fuel, and work as gas flow
Time less, can cut off second pipe 6 by gas cut off valve 11, only passing through the first pipeline 5 is burner 14
Fuel is provided.Stablize and burning gases (i.e. give up flue gas) completely for ease of being formed, it is to avoid fuel is not simultaneously
The waste burnt completely, can control the aperture of air control valve 4 according to the amount of fuel, makes the amount foot of air
So that fuel burns completely.Wherein, controller noted above 19 can calculate initial combustion gas according to preset function
Flow, this preset function is that the historical data analysis according to heating furnace burning draws.And it should be noted that
Controller 19 controls air control valve the 4, first gas control valve the 8, second gas control valve 10 and combustion gas
The concrete mode of the aperture of stop valve 11 can use conventional control mode (such as control signal) to realize,
Therefore here, concrete control mode is not too much repeated.
Here, in order to improve the gas flow on detection the first pipeline 5 and the gas flow on second pipe 6
Accuracy, the pipeline that optional diameter is less is made the first pipeline 5 and second pipe 6, is being chosen simultaneously
When second flow detecting element 7 and three flow detecting elements 9, it should be ensured that the combustion gas stream on the first pipeline 5
The measured value of amount is positioned at the stage casing of second flow detecting element 7 range, and the combustion gas stream on second pipe 6
The measured value of amount is positioned at the stage casing of the 3rd flow detecting element 9 range.Similarly, in order to improve detection air
The accuracy of flow, when choosing first flow detecting element 3, it should be ensured that air mass flow in air line 2
Measured value be positioned at the stage casing of first flow detecting element 3 range.
Above-mentioned PI controls logic and refers to, according to the target temperature that operator sets, (i.e. heating furnace finally to reach
The temperature arrived), a temperature-rise period is divided into multiple less temperature rise period, and be each temperature rise period all
Set one progressively close to the phase targets temperature of target temperature, when the actual temperature of heating furnace is close to stage mesh
During mark temperature, this control logic will automatically revise PI parameter (as set new stage mesh according to pre-set programs
Mark temperature, reduces scale parameter etc.), enter the next temperature rise period.Reach to make the actual temperature of heating furnace
The most controlled rising, approaches the effect of target temperature stepwise.And when the actual temperature Proximity operation of heating furnace
During the target temperature that member sets, by the heating curve of tracing detection heating furnace, appropriate limit temperature PI is controlled
The output upper limit of logic processed, limits programming rate, prevents temperature overshoot.Such as, when the temperature of temperature-rise period
For rising to 950 DEG C from 500 DEG C, control logic by above-mentioned PI, burner hearth just can be made effectively to add heat space
In, when control point temperature (i.e. the actual temperature of heating furnace) arrives 950 DEG C of (targets that i.e. operator sets
Temperature) after, the punching that heated up is less than 4 DEG C, and control point temperature and target temperature difference are less than 2 DEG C, and furnace temperature is equal
Even property controls within positive and negative 5 DEG C.
As can be seen here, the heater in this utility model embodiment, gas-fired heater can not only be made to reach more
High temperature uniformity (such as temperature uniformity≤10 DEG C) requirement, moreover it is possible to improve Control for Kiln Temperature precision (example
As make Control for Kiln Temperature precision≤± 1 DEG C), accelerate programming rate, save fuel cost, save the time, improve
Yield.
The above is preferred implementation of the present utility model, it is noted that general for the art
For logical technical staff, on the premise of without departing from principle described in the utility model, it is also possible to make some changing
Entering and retouch, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (6)
1. the heater of a gas-fired heater, it is characterised in that including:
Multiple heating units, the plurality of heating unit is distributed in described along the length direction of the body of heater of heating furnace
On the furnace shell of heating furnace；
Air line, the outfan of described air line is connected with described heating unit, and described air line
It is provided with first flow detecting element and air control valve；
Gas pipeline, described gas pipeline includes the first pipeline and second pipe, the output of described first pipeline
End and the outfan of described second pipe are all connected with described heating unit, and described first pipeline is provided with the
Two flow detecting elements and the first gas control valve, described second pipe be provided with the 3rd flow detecting element,
Second gas control valve and gas cut off valve；
For detecting the detector unit of described heating furnace in-furnace temperature；
Controller, described controller respectively with described detector unit, described first flow detecting element,
Described air control valve, described second flow detecting element, described first gas control valve, described 3rd stream
Amount detecting element, described second gas control valve and described gas cut off valve connect, and receive described first flow
Second value that the first-class value that detecting element detects, described second flow detecting element detect,
The temperature that the 3rd flow value that described 3rd flow detecting element detects, described detector unit detect
Value and the target temperature of described heating furnace, control described air control valve, described first gas control valve,
Described second gas control valve and the aperture of gas cut off valve.
2. heater as claimed in claim 1, it is characterised in that described heating unit includes:
Fixed support, described fixed support is fixed on described furnace shell；
Fine tuning structure, described fine tuning structure is fixed on described fixed support；
Burner, described burner is connected with described fine tuning structure, and described burner has one with respect to the horizontal plane
Presetting tilt angled down, the outfan of described air line is connected with the air intake of described burner, and described first
The outfan of pipeline and the outfan of described second pipe all fuel ports with described burner are connected.
3. heater as claimed in claim 2, it is characterised in that described default tilt angled down is 6
Degree is to 9 degree.
4. heater as claimed in claim 2, it is characterised in that the burner block of described burner includes:
One spray-hole, or,
Angle between multiple spray-holes, and the most adjacent two spray-holes is predetermined angle.
5. heater as claimed in claim 4, it is characterised in that described predetermined angle be 20 degree extremely
30 degree.
6. heater as claimed in claim 2, it is characterised in that described fine tuning structure includes adjusting
Bolt and adjustment ring, described adjustment bolt and described adjustment ring be both secured on described fixed support, and described
Adjust bolt and described adjustment ring is all connected with described burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620389315.4U CN205717171U (en) | 2016-05-03 | 2016-05-03 | A kind of heater of gas-fired heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620389315.4U CN205717171U (en) | 2016-05-03 | 2016-05-03 | A kind of heater of gas-fired heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205717171U true CN205717171U (en) | 2016-11-23 |
Family
ID=57333075
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620389315.4U Expired - Fee Related CN205717171U (en) | 2016-05-03 | 2016-05-03 | A kind of heater of gas-fired heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205717171U (en) |
-
2016
- 2016-05-03 CN CN201620389315.4U patent/CN205717171U/en not_active Expired - Fee Related
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161123 |
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| CF01 | Termination of patent right due to non-payment of annual fee |