CN209147134U - A kind of length of flame detection device - Google Patents
A kind of length of flame detection device Download PDFInfo
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- CN209147134U CN209147134U CN201821915002.3U CN201821915002U CN209147134U CN 209147134 U CN209147134 U CN 209147134U CN 201821915002 U CN201821915002 U CN 201821915002U CN 209147134 U CN209147134 U CN 209147134U
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Abstract
The utility model relates to a kind of length of flame detection devices, including fire monitor equipment (4), the fire monitor equipment (4) includes fiery microscopy head (4.1), optical fiber (4.2), flame detecting probe (4.5), protection sleeve pipe (4.3) and cooling air system (4.4), it further include walking mobile device (6) and flame analysis controller (5.1), the fire monitor equipment (4) is connect with walking mobile device (6) and the fiery microscopy head (4.1) under the drive of walking mobile device in fire monitor equipment (4) can be moved forward and backward, the flame analysis controller (5.1) is electrically connected with flame detecting probe (4.5).For above-mentioned detection device, the utility model gives detection method.The utility model is able to detect the parameters such as the length of flame and blinking characteristic, and is not interfered by bias light.
Description
Technical field
The utility model relates to boiler technology field more particularly to a kind of ejection-type combustion flame detection techniques, specifically
Refer to a kind of length of flame device.
Background technique
Large-sized boiler capacity is big, burner number is more, for single burner, uneven point of air capacity and fuel
Match, the flame characteristics between burner will be made to generate deviation, so that a series of adverse consequences are brought, the fire extinguishing that boiler often occurs
It is non-stop, combustion instability, burner scaling loss, coking, unburned combustible in fly ash is high, NOx is increased, primary air piping blocking and First air
Phenomena such as pipe catches fire, mostly related with this, flame status detection is insufficient to cause flame adjusting bad, to the energy-saving safe of boiler
Operation brings certain influence, and when boiler load is too low or coal quality fluctuation is excessive, this phenomenon is even more serious.Influence burning
The jet out flames principal element of characteristic of device includes the air quantity (wind speed) of primary air piping, powder amount, coal quality, fineness etc., the length of flame and
The variation of blinking characteristic reflects the variation of above-mentioned factor, is very important parameter.
Current flame detecting device is mounted on the fixed position of burner hearth sidewall, fixed with flame relative position and mostly with fire
The angle of flame axis line is excessively parallel, and distance is farther out, and since angle is fixed, the fixation position for being only directed at flame is detected, because
This, current flame detector system can not detect the length of the flame of coal burner ejection and flash the parameters such as characteristic, only use
There is fire in detection and without fiery state, the automatic adaptation fluctuated to the flame combustion control of fining and coal quality, fineness is very unfavorable.
Simultaneously as bias light is strong in burner hearth, detected flare up fire is often interfered by bias light strong in burner hearth, and nothing
Method verifies the detection position of flame by changing, and therefore, often phenomena such as wrong report occurs because of the interference of bias light,
It impacts and threatens to safe operation of the boiler.This just needs to study one kind and is able to detect the ginseng such as the length of flame and blinking characteristic
Number, and the flame status checking method and device not interfered by bias light.
Utility model content
In view of the shortcomings of the prior art, the utility model provides a kind of new length of flame detection devices and detection side
Method is able to detect the parameters such as the length of flame and blinking characteristic by this method, and is not interfered by bias light.
The utility model is achieved by the following technical solution, and provides a kind of length of flame detection device first, including
Fire monitor equipment, the fire monitor equipment include fiery microscopy head, optical fiber, flame detecting probe, protection sleeve pipe and cooling air system, further include row
Mobile device and flame analysis controller are walked, the fire monitor equipment connect with walking mobile device and in walking mobile device
Drive the fiery microscopy head in lower fire monitor equipment that can be moved forward and backward, the flame analysis controller is electrically connected with flame detecting probe.
Preferably, the walking mobile device is screw nut driven mechanism, the screw nut driven mechanism
Including pedestal, lead screw, nut, guide rail, motor and electric machine controller, the guide rail is fixed on the base, the lead screw with
The output shaft axis of motor connects, and nut and lead screw match, and the sliding block on guide rail is connect to limit its rotation, the nut with nut
Also be fixedly connected with protection sleeve pipe, include in the signal of the described electric machine controller output location information of fiery microscopy head and with fire
The electrical connection of flame analyzer-controller, the electric machine controller and flame analysis controller are packaged together and constitute controller, described
Flame analysis controller be PLC controller or singlechip controller.In this preferred embodiment, lead screw rotation is driven before and after nut
It is mobile, and fiber lens is driven to move in burner hearth, fiber lens are on the move scanned flame against flame and movement
Detection acquires the optical signal of flame each position, is input to flame detecting probe by optical fiber, and export the electric current for having optical signal to be converted into
Signal.
Preferably, the motor is one of stepper motor, servo motor or linear motor, the motor control
Device processed is corresponding electric machine controller.
Preferably, the protection sleeve pipe and burner hearth are equipped with sealing device between the walls, the sealing device is gas
Power sealing device or sealing ring seal device.
As another preferred embodiment, it includes cylinder and displacement that the walking mobile device, which is cylinder mobile device,
Sensor, wherein the outer end of the cylinder and protective case connects, the displacement sensor is electrically connected with flame analysis controller
It connects.
Preferably, being equipped with infrared sensitive element or/and visible light photosensitive element in the flame detecting probe.
It is uniform motion when preferably, the walking mobile device band is got angry, microscopy head is mobile.
The utility model additionally provides a kind of length of flame detection method, detects dress using a kind of above-mentioned length of flame
It sets, comprising the following steps:
A) flame frequency is calculated, flame analysis controller high speed acquisition flame current signal is automatically recorded in a cycle
Flame current peak frequency of occurrence calculates flame frequency according to following formula,
,
F indicates unit time flame frequency values, unit Hz；
N indicates the number occurred in a calculating cycle flame signal code peak value；
B) length of flame is calculated according to the location information and flame frequency information of fiery microscopy head, and following formula can calculate fire
Flame length,
,
；
Position data can be calculated from stepper motor displacement data or displacement sensor data；
Flame location interpretation can calculate according to flame frequency change rate and judge, the frequency of the frequency of bias light and flame is not
Together, each section of flame of frequency is also different.
In conclusion fiber lens, can also be one to be directed at the central axis that burner jets out flames in the utility model
Determine to move in range, mobile axial range includes from jet expansion to the flame end.Optical fiber is placed in protection sleeve pipe, and with
Cooling wind prevents from burning out optical fiber.Main acquisition visible light is examined according to flame feature fire and infrared light, all light all enter mirror
Head, the interior installation infrared sensitive element of flame detecting probe or/and visible light photosensitive element, just acquire infrared ray or/and visible light,
And it is converted to current signal.By lens position signal input flame analysis controller, fire is examined for electric machine controller or position sensor
Light current signal is inputted flame analysis controller by probe, according to the flame detecting probe detected along axial moving process of popping one's head in
Electric current and variable-current variation are exported, combining position information calculates the length of flame, burning transition zone position, flicker frequency etc. and refers to
Mark can export 4-20mA standard signal (length of flame, burning transition zone position, the flame frequency of continuous part), can also
Continuously to export flame intensity signal, flame flicking frequency signal can also be continuously exported.
According to on-the-spot test, Theory of Combustion and common knowledge it is found that flame from coal dust eject spout to burnt zone axis
Into length, not yet burn from coal dust, coal dust lights transition, coal dust completely burned, coal dust burn each length with bias light
Stage, the light characteristics such as flame brightness, flame temperature, flame frequency, flame intensity, flame AC amplitude have certain difference, light
Into camera lens, and it current signal is finally converted by probe can react above-mentioned difference, flame analysis controller is according to current signal
This small difference is analyzed, the location information before and after fiber lens is examined further according to fire can calculate the length of flame, burned
Cross the characteristics such as zone position, flame flicking frequency.
Detailed description of the invention
Fig. 1 is a kind of flame detecting device structural schematic diagram of the utility model；
It is as shown in the figure:
1, burner hearth wall, 2, burner nozzle, 3, flame, 4, fire monitor equipment, 4.1, fiery microscopy head, 4.2, optical fiber, 4.3,
Protection sleeve pipe, 4.4, cooling air system, 4.5, flame detecting probe, 5, controller, 5.1, flame analysis controller, 5.2, motor control
Device, 6, walking mobile device, 6.1, pedestal, 6.2, lead screw, 6.3, nut, 6.4, guide rail.
Specific embodiment
Illustrate the technical characterstic of the utility model for that can understand, below by specific embodiment, to this programme into
One step illustrates.
A kind of length of flame detection device, including fire monitor equipment 4, the fire monitor equipment 4 include fiery microscopy head 4.1, optical fiber
4.2, flame detecting probe 4.5, protection sleeve pipe 4.3 and cooling air system 4.4, which is characterized in that further include walking mobile device 6 and fire
Flame analyzer-controller 5.1, the fire monitor equipment 4 is connect with walking mobile device 6 and the fire under the drive of walking mobile device
Fiery microscopy head 4.1 in checking device 4 can be moved forward and backward, and the flame analysis controller 5.1 is electrically connected with flame detecting probe 4.5.
As shown in fig. 1, in the present embodiment, the walking mobile device 6 is screw nut driven mechanism, described
Screw nut driven mechanism includes pedestal 6.1, lead screw 6.2, nut 6.3, guide rail 6.4, motor 6.5 and electric machine controller 5.2, institute
The guide rail 6.4 stated is fixed on pedestal 6.1, and the output shaft axis of the lead screw 6.2 and motor 6.5 connects, nut 6.3 and lead screw
6.2 match, and the sliding block on guide rail 6.4 is connect to limit its rotation with nut 6.3, the nut 6.3 also with protection sleeve pipe 4.3
It is fixedly connected, includes the location information of fiery microscopy head 4.1 and and flame analysis in the signal that the electric machine controller 5.2 exports
Controller 5.1 is electrically connected, and the electric machine controller 5.2 and flame analysis controller 5.1 are packaged together and constitute controller 5,
The flame analysis controller 5.1 is PLC controller.
The motor 6.5 is stepper motor, and the electric machine controller 5.2 is corresponding step motor control
Device is equipped with sealing device between the protection sleeve pipe 4.3 and burner hearth wall 1, the sealing device is pneumatic sealing device,
Infrared sensitive element and visible light photosensitive element, 6 band of walking mobile device are installed in the flame detecting probe 4.5
It is uniform motion when microscopy head 4.1 of getting angry is mobile.
For above-mentioned flame detecting device, detection method includes the following steps for the length of flame:
A) flame frequency is calculated, 5.1 high speed acquisition flame current signal of flame analysis controller is automatically recorded in a week
Phase flame current peak frequency of occurrence calculates flame frequency according to following formula,
,
F indicates unit time flame frequency values, unit Hz；
N indicates the number occurred in a calculating cycle flame signal code peak value；
B) length of flame is calculated according to the location information and flame frequency information of fiery microscopy head 4.1, and following formula can calculate
The length of flame,
,
；
Position data can be calculated from stepper motor displacement data or displacement sensor data；
Flame location interpretation can calculate according to flame frequency change rate and judge, the frequency of the frequency of bias light and flame is not
Together, each section of flame of frequency is also different.
Finally, the utility model is without description also it should be noted that the example above and explanation are also not limited to above-described embodiment
Technical characteristic can by or using the prior art realize, details are not described herein；Above embodiments and attached drawing are merely to illustrate
The technical solution of the utility model be not be limitations of the present invention, referring to preferred embodiment to the utility model into
Go detailed description, those skilled in the art should understand that, those skilled in the art are practical new at this
The variations, modifications, additions or substitutions made in the essential scope of type also should belong to this without departure from the objective of the utility model
The claims of utility model, such as used motor are also possible to private and take motor, the mobile dress of the walking
It sets and is also possible to realize in such a way that linear motor or cylinder add position sensor, illustrate again, above-described embodiment is
It gives and has arbitrarily lifted a currently used embodiment.
Claims (7)
1. a kind of length of flame detection device, including fire monitor equipment (4), the fire monitor equipment (4) include fiery microscopy head (4.1),
Optical fiber (4.2), flame detecting probe (4.5), protection sleeve pipe (4.3) and cooling air system (4.4), which is characterized in that further include walking
Mobile device (6) and flame analysis controller (5.1), the fire monitor equipment (4) connect and are expert at walking mobile device (6)
Walking the fiery microscopy head (4.1) under the drive of mobile device in fire monitor equipment (4) can be moved forward and backward, the flame analysis controller
(5.1) it is electrically connected with flame detecting probe (4.5).
2. a kind of length of flame detection device according to claim 1, which is characterized in that the walking mobile device
It (6) is screw nut driven mechanism, the screw nut driven mechanism includes pedestal (6.1), lead screw (6.2), nut
(6.3), guide rail (6.4), motor (6.5) and electric machine controller (5.2), the guide rail (6.4) are fixed on pedestal (6.1),
The lead screw (6.2) and the output shaft axis of motor (6.5) connects, and nut (6.3) and lead screw (6.2) match, on guide rail (6.4)
Sliding block is connect to limit its rotation with nut (6.3), and the nut (6.3) is also fixedly connected with protection sleeve pipe (4.3), described
Electric machine controller (5.2) output signal in include fiery microscopy head (4.1) location information and with flame analysis controller
(5.1) it is electrically connected, the electric machine controller (5.2) and flame analysis controller (5.1) are packaged together and constitute controller
(5), the flame analysis controller (5.1) is PLC controller or singlechip controller.
3. a kind of length of flame detection device according to claim 2, which is characterized in that the motor (6.5) is step
Into one of motor, servo motor or linear motor, the electric machine controller (5.2) is corresponding motor control
Device.
4. a kind of length of flame detection device according to claim 1, which is characterized in that the protection sleeve pipe (4.3)
Sealing device is equipped between burner hearth wall (1), the sealing device is pneumatic sealing device or sealing ring seal device.
5. a kind of length of flame detection device according to claim 1, which is characterized in that the walking mobile device
(6) it is cylinder mobile device, includes cylinder and displacement sensor, wherein the outer end of the cylinder and protective case (4.3) connects
It connects, the displacement sensor is electrically connected with flame analysis controller (5.1).
6. a kind of length of flame detection device according to claim 1, which is characterized in that the flame detecting probe (4.5)
Infrared sensitive element or/and visible light photosensitive element are inside installed.
7. a kind of length of flame detection device according to claim 1, which is characterized in that the walking mobile device
(6) band get angry microscopy head (4.1) it is mobile when for uniform motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821915002.3U CN209147134U (en) | 2018-11-21 | 2018-11-21 | A kind of length of flame detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821915002.3U CN209147134U (en) | 2018-11-21 | 2018-11-21 | A kind of length of flame detection device |
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| Publication Number | Publication Date |
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| CN209147134U true CN209147134U (en) | 2019-07-23 |
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ID=67286623
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| CN201821915002.3U Active CN209147134U (en) | 2018-11-21 | 2018-11-21 | A kind of length of flame detection device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323280A (en) * | 2018-11-21 | 2019-02-12 | 珠海市华远自动化科技有限公司 | A kind of length of flame detection device and detection method |
| CN109323280B (en) * | 2018-11-21 | 2024-05-24 | 珠海市华远自动化科技有限公司 | Flame length detection device and method |
-
2018
- 2018-11-21 CN CN201821915002.3U patent/CN209147134U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109323280A (en) * | 2018-11-21 | 2019-02-12 | 珠海市华远自动化科技有限公司 | A kind of length of flame detection device and detection method |
| CN109323280B (en) * | 2018-11-21 | 2024-05-24 | 珠海市华远自动化科技有限公司 | Flame length detection device and method |
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