CN207293124U - Accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated - Google Patents
Accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated Download PDFInfo
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- CN207293124U CN207293124U CN201720855598.1U CN201720855598U CN207293124U CN 207293124 U CN207293124 U CN 207293124U CN 201720855598 U CN201720855598 U CN 201720855598U CN 207293124 U CN207293124 U CN 207293124U
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- ash
- deduster
- dust stratification
- alleviated
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- 239000000428 dust Substances 0.000 title claims abstract description 77
- 238000013517 stratification Methods 0.000 title claims abstract description 49
- 238000001514 detection method Methods 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000013461 design Methods 0.000 claims abstract description 18
- 238000007689 inspection Methods 0.000 claims description 5
- 241000973497 Siphonognathus argyrophanes Species 0.000 claims description 3
- 239000000779 smoke Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 230000005856 abnormality Effects 0.000 abstract description 2
- 239000002956 ash Substances 0.000 description 104
- 230000006378 damage Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000012716 precipitator Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000013024 troubleshooting Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000000181 anti-adherent effect Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 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
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
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Abstract
The utility model provide it is a kind of accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated, including：One bucket body, there is a design to carry material position and high charge level early warning material position；One dust leg road, has and stretches into the ash inlet tube inside bucket body and the detection mouth outside stretching bucket body；The mouth of pipe of the ash inlet tube is carried between material position and ash bucket high charge level early warning material position positioned at the design；The detection mouth is closed by a closed component to be opened/closed.It can easily judge that dust collector ash hopper is to be in normal condition or abnormality in detection mouth.And can be after the grey bearing capacity of storage be designed beyond deduster, dust is higher by after normal storage ash quantity in ash bucket, dust stratification is realized the defencive function to deduster by detection mouth ash discharge.
Description
Technical field
The utility model is related to environmental technology field, more particularly to cleaner, and in particular to one kind can accurate judgement simultaneously
Alleviate the ash hopper device of the accident dust stratification of deduster.
Background technology
Showing for the of short duration dust stratification of ash bucket occurs often because of ash discharge failure in the dust collector ash hopper that thermal power plant is equipped with often
As, this belongs to normal phenomenon, as long as the storage ash capacity that general dust stratification allows in dust collector ash hopper, and dust stratification duration correspondence is extensive
In the time range of multiple normal ash disposal, it would not damage to deduster.Therefore dust collector ash hopper dust stratification causes to endanger to deduster
Harmful case, is entirely because troubleshooting not in time, makes dust stratification inside dust collector ash hopper exceed deduster design permission
Storage capacity.
It is domestic that the security incident caused by the serious dust stratification of dust collector ash hopper repeatedly occurs.Such as：Hubei Pu in 2005
No. 2 electric precipitator " 1.1 " total collapse accidents of boundary Power Plant No.1 unit (300,000 kilowatts)；The second thermoelectricity of the packet header of the Inner Mongol in 2005
One electric field " 3.20 " ash bucket total collapse accident of factory No. 2 units (200,000 kilowatts) electric precipitator；Inner Mongol Huo Mei groups in 2005
No. 3 unit " 4.9 " ash bucket case accidents of one phase of power plant for self-supply of Hong Junlv electricity companies；2006 time electricity international Anhui Chizhou City, nine grey hair
Electric No. 2 unit electric precipitator " 3.14 " cave-in accidents of Co., Ltd；The safe and sound Iron And Steel Co., Ltd in Tangshan " 9.23 " electricity removes within 2014
Dirt device ash bucket cave-in accident etc..Above-mentioned its inducement of startling accident can all be attributed to the accident dust stratification of deduster and not and
When deashing.
Domestic thermal power plant deduster judges whether the technological means of dust stratification mainly has three aspects for inside at present：Deduster ash
The high charge level switch that struggles against judges；Deduster ash disposal system operating parameter indirect discrimination；Measure verification is disassembled in maintenance.
The factor that ash disposal system operating parameter indirect discrimination influences is very much, and needs the comparison of longtime running parameter, has
There is very big hysteresis quality, it is impossible to find dust stratification hidden danger in time.The feelings that measure verification often has occurred and that in accident are disassembled in maintenance
Under condition, that takes has the interim measure of certain risk and damaging, is not the technical measures of equipment normal operation.So
Mainly choose in the industry at present ash bucket high charge level switch judge measure judge inside deduster whether dust stratification.
Generally switched at this stage using high charge level and judge to coordinate artificial accident cinerary device serious inside deduster to handle
Dust stratification failure, the premise of such a mode is will be using ash bucket high charge level switching signal as operation foundation, if high charge level switch letter
Number go wrong, then this mode can not just work normally.In addition, when high charge level switching signal fails, not only cannot and
When process accident hidden danger, accident potential cannot be judged whether in time by also resulting in staff, this is also to cause domestic hair
The key technology factor of the serious dust stratification accident of raw deduster.
As shown in Figure 1, existing dust collector ash hopper when on ash bucket high charge level switch 01 alarm when, it is necessary to which ash bucket is opened manually
The urgent cinerary device 02 of lower part accident, carries out urgent ash discharge, if carry out accident promptly puts ash and fully relies on high charge level switch 01
Single source signal.
In ash bucket high charge level switch type selecting, since radio frequency admittance material level indicator is relatively economical, reliable, for this reason, general
Time design selection using radio frequency admittance material level indicator.Theoretically, radio frequency admittance material level indicator uses in design
Advanced anti-adhesive circuit, using the measurement of many reference amounts, wherein by using exchange phase demodulation sampler, solves from mathematical theory
Bridging problem on switch.But in dust collector ash hopper in adverse circumstances, radio frequency admittance material level indicator still inevitably goes out
Existing false alarm and damage, exactly because also false alarm takes place frequently radio frequency admittance material level indicator in practical applications, it is easy to operation
Administrative staff produce the misleading in understanding.In addition, radio frequency admittance level-sensing device needs to debug before use, when debugging, is needed by having
Grey and ashless two states, ability accurate calibration level-sensing device, so, in deduster ash disposal system existing defects, such as ash disposal
When design conveying capacity deficiency, deduster air flow method are uneven, it will make the presence of very big wind in ash disposal system operational process
Dangerous hidden danger.If deduster is run in the case of there are hidden danger for a long time, service personnel cannot in time have found and exclude to ask again
Topic, the long-term accumulation of problem, finally will result in serious harm.The country has many dedusters serious product occur going into operation in 1 year
Grey failure, mainly caused by exactly above-mentioned reason.
With the constantly improve of passive nucleon material-level measure technological means, passive nuclear level sensing device has obtained more and more wider
General use.But for passive nuclear level sensing device, equally there is also the possibility for breaking down and failing, in addition, passive nucleon
Level-sensing device also without by the test and verification under the state of emergency, so, even if being led using passive nuclear level sensing device instead of radio frequency
Level switch of receiving can not avoid deduster that serious dust stratification harm occurs completely.
Thus, ash bucket dust stratification can be judged accurately, conveniently, reliably, in time by how realizing, and safe and simple, effective
The serious dust stratification accident potential of processing deduster is the important topic of urgent need to resolve in the industry.
Utility model content
In view of the deficiency of the prior art, the purpose of this utility model is to provide one kind and accurate judgement and can alleviate
The ash hopper device of the accident dust stratification of deduster, can detection mouth easily judge dust collector ash hopper be in normal condition or
Abnormality.And can be after the grey bearing capacity of storage be designed beyond deduster, dust is higher by after normal storage ash quantity in ash bucket,
Dust stratification is set to realize the defencive function to deduster by detection mouth ash discharge.
In order to achieve the above object, the technical scheme adopted by the utility model is that：
Accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated, including：
One bucket body, there is a design to carry material position and high charge level early warning material position；
One dust leg road, has and stretches into the ash inlet tube inside bucket body and the detection mouth outside stretching bucket body；
The mouth of pipe of the ash inlet tube is carried between material position and ash bucket high charge level early warning material position positioned at the design；
The detection mouth is closed by a closed component to be opened/closed.
Further, the mouth of pipe direction of the ash inlet tube is backwards to the direction that ash bucket inside smoke flows.
Further, the mouth of pipe of the ash inlet tube is downward inclined tube mouth.
Further, the top in the dust leg road is fixed by being arranged at the pipe collar inside bucket body in support；Lower part leads to
The wall for being opened in a through hole of bucket body through bucket body is crossed, and the bucket body is fixedly arranged on by welding manner.
Further, the part outside the stretching bucket body in the dust leg road is provided with insulating layer.
Further, the closed component includes being fixedly arranged on a flange port of detection mouth and by helicitic texture and flange port
Connect and close a blind flange of the flange port.
Further, the closed component include be fixedly arranged on detection mouth a doorframe and by can opening and closing structure close the door
One of frame.
Further, the center line of the detection mouth is horizontal line.
Further, the center line of the detection mouth forms downward 0 ° to 60 ° of angles with horizontal direction.
Further, the ash discharge that the detection mouth is set apart from ash bucket inspection platform or for detection mouth position, which is collected, to be held
The distance of device is 0.2 to 1.8 meter.
By taking above-mentioned technical proposal, ash inlet tube is highly high less than ash bucket design carrying material position, i.e., grey position limiting altitude
In high charge level early warning material position, i.e. high charge level switch height.It is under normal circumstances, high after dust stratification first reaches high charge level switch height
Level switch is alarmed, at this point it is possible to pass through conventional means ash discharge.Once high charge level switch fault, fails to alarm, grey position is after of continuing rising
Height, reaches the nozzle position of ash inlet tube, at this time, as long as detection door is opened, under the action of dust stratification tension force, you can dust stratification is passed through
Discharged from detection mouth in dust leg road.Thus judge that dust stratification exceedes high charge level early warning material position inside ash bucket with then can determine that.
Although in this way, only adding a pipeline structure, very reliable fault discovery, alleviation and extension processing can be played
The effect of time, greatly improves the safety and stability of ash bucket, and low cost, can't additionally increase excessive load, avoid
Because adding excessive overweight troubleshooting element, increase existing equipment loading effect equipment normal operation.In addition, the utility model
The detection that is formed of ash bucket and ash discharge system there is high stability in itself, be not in failure substantially, and because of its work
State is capable of the inspection of simplicity, therefore by periodic inspection, can eliminate the possibility of failure.
Brief description of the drawings
Fig. 1 is the structure diagram of existing dust collector ash hopper in background technology.
Fig. 2 is that accurate judgement and can alleviate the ash hopper device of the accident dust stratification of deduster in one embodiment of the utility model
Structure diagram.
Fig. 3 is that accurate judgement and can alleviate in one embodiment of the utility model in the ash hopper device of the accident dust stratification of deduster
Ash inlet tube installation direction schematic diagram.
Embodiment
Illustrate the operation principle of the utility model first：
Dust collector ash hopper is as follows with characteristic by its structure and working environment：Be first deduster in operation, such as ash bucket
Can be in negative pressure state when belonging to ashless empty bucket-shaped state, inside ash bucket, this also mean that at this time if open ash bucket with outside
The hole that portion's air is connected, extraneous air can be entered inside ash bucket under suction function by hole.Secondly dust collector ash hopper
During in dust stratification state, since the mobility of ash is larger, there are certain fluid properties, grey tension force promotes grey from ash bucket and outer
What the hole that portion's air is connected outwards sprayed, and ash accumulation more than hole is higher, and grey injection power is also bigger.
Normal ash bucket storage ash is that deduster runs necessary function, but the serious dust stratification of deduster of improper storage ash is to need
The accident to be taken precautions against, for this reason, when ash bucket storage ash reaches improper storage ash condition, (grey position is high for grey storing highly in ash bucket
Degree), it is typically that designer carries out load, the design input condition of structure design, the boundary condition inputted using this design,
High grey position ash exhauster is set on ash bucket, is the innovation utility model foundation of the utility model.
The following is a combination of the drawings in the embodiments of the present utility model, and the technical scheme in the embodiment of the utility model is carried out
Clear, complete description.
As shown in Fig. 2, in one embodiment, there is provided a kind of accurate judgement and the ash bucket of the accident dust stratification of deduster to be alleviated
Device, including：Bucket body 1, has design carrying material position and high charge level early warning material position；The latter is the material position for installing high charge level switch 2；
The two material positions are all known design parameters, can determine the two material positions during each ash bucket redesign, then arrange
Corresponding device；
Dust leg road 2, has and stretches into the ash inlet tube 21 inside bucket body and the detection mouth outside stretching bucket body；
The mouth of pipe of ash inlet tube 21 is between design carrying material position and ash bucket high charge level early warning material position；
Detection mouth is closed by a closed component to be opened/closed.
With reference to figure 3, into ash, 21 mouth of pipe direction is backwards to the direction that ash bucket inside smoke flows.And the mouth of pipe of ash inlet tube 21
For downward inclined tube mouth.It can thus prevent the mouth of pipe of ash inlet tube from causing coal ash directly because air-flow enters into ash in face of flue gas
Pipe, angle are that the ash that deduster falls in order to prevent falls directly into ash inlet tube downwards, can be to greatest extent by this structure design
Ground allows ash accumulation to flow into ash inlet tube after getting up, and avoiding dust stratification height from not yet reaching high charge level switch alarm height has grey entrance
Ash inlet tube.
In addition, the top in dust leg road is fixed by being arranged at the pipe collar inside bucket body in support 11；Lower part is by opening up
The wall of bucket body is passed through in a through hole of bucket body, and bucket body is fixedly arranged on by welding manner.
In addition, the lower part in dust leg road is provided with insulating layer.By taking Insulation to external pipe, pipe can be prevented
Occur ash in road and cool down hardened situation.
Specifically, closed component is for example including the flange port that is fixedly arranged on detection mouth as depicted and by screw thread knot
Structure is connected with flange port and closes a blind flange of the flange port.Helicitic texture can be dismantled conveniently.And, it is desirable to flange
The faying face of mouth and blind flange sets sealing structure.
In further embodiment, closed component can also be for example including the doorframe that is fixedly arranged on detection mouth and by that can be opened and closed knot
Structure closes one of the doorframe.Door is installed on doorframe by structures such as hinge, door locks, in addition, the contact surface of door and doorframe
Seek carry out encapsulation process.
Detection mouth can use horizontally disposed mode as shown in the figure, in a further embodiment, can also use and level
Direction forms 0 ° of downward mode to 60 ° of angles and arranges, dust stratification is discharged at the same time by dead weight.
In addition, the ash discharge that the mouth of pipe of the lower part in dust leg road is set apart from ash bucket inspection platform or for nozzle position is received
The distance H for collecting container is 0.2 to 1.8 meter.Airborne dust in order to prevent, the mouth of pipe of the lower part in dust leg road can set up spray equipment (figure
Do not show).
By above-mentioned, ash inlet selection reaches the limiting altitude of the grey height of normal storage in ash bucket, in normal condition ash bucket ash position
When being not reaching to high charge level, detection mouth is opened, can substantially observe that extraneous air to the air draught of ash bucket inside, may determine that at this time
It is normal inside ash bucket.When limiting altitude of the dust stratification more than the grey height of normal storage, ash meeting nature is flowed into accident dust stratification and judges dress
In the ash pipe put, detection mouth is opened at this time, ash will be flowed from critical point automatically due to the tension force of itself, the effect of mobility of pressure
Go out.Therefore can dust stratification situation inside accurate judgement ash bucket, and situation of the dust stratification more than prescribed limit height, product once occur whereby
Ash can discharge at the same time, alleviate dust stratification situation, extend processing time.
It should be noted that if detection mouth horizontal direction is arranged, the valve mechanism of such as ball valve or butterfly valve cannot be used
As closed component, it will so be unfavorable for ash discharge.
Obviously, described embodiment is only the utility model part of the embodiment, instead of all the embodiments.It is based on
Embodiment in the utility model, those of ordinary skill in the art are obtained all without making creative work
Other embodiment, shall fall within the protection scope of the present invention.
Claims (10)
- Accurate judgement and 1. the ash hopper device of the accident dust stratification of deduster can be alleviated, it is characterised in that including：One bucket body, there is a design to carry material position and high charge level early warning material position；One dust leg road, has and stretches into the ash inlet tube inside bucket body and the detection mouth outside stretching bucket body；The mouth of pipe of the ash inlet tube is carried between material position and ash bucket high charge level early warning material position positioned at the design；The detection mouth is closed by a closed component to be opened/closed.
- 2. accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated as claimed in claim 1, it is characterised in that The mouth of pipe direction of the ash inlet tube is backwards to the direction that ash bucket inside smoke flows.
- 3. accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated as claimed in claim 2, it is characterised in that The mouth of pipe of the ash inlet tube is downward inclined tube mouth.
- 4. accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated as claimed in claim 1, it is characterised in that The top in the dust leg road is fixed by being arranged at the pipe collar inside bucket body in support；Lower part is logical by be opened in bucket body one Hole passes through the wall of bucket body, and is fixedly arranged on the bucket body by welding manner.
- 5. accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated as claimed in claim 1, it is characterised in that Part outside the stretching bucket body in the dust leg road is provided with insulating layer.
- 6. accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated as claimed in claim 1, it is characterised in that The closed component includes being fixedly arranged on a flange port of detection mouth and is connected by helicitic texture with flange port and closes the flange One blind flange of mouth.
- 7. accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated as claimed in claim 1, it is characterised in that The closed component include the doorframe for being fixedly arranged on detection mouth and by can opening and closing structure close one of the doorframe.
- 8. accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated as claimed in claim 1, it is characterised in that The center line of the detection mouth is horizontal line.
- 9. accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated as claimed in claim 1, it is characterised in that The center line of the detection mouth forms downward 0 ° to 60 ° of angles with horizontal direction.
- 10. accurate judgement and can alleviate the ash hopper device of the accident dust stratification of deduster as claimed in claim 1, its feature exists In the distance for the ash discharge collection vessel that the detection mouth is set apart from ash bucket inspection platform or for detection mouth position is 0.2 To 1.8 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720855598.1U CN207293124U (en) | 2017-07-14 | 2017-07-14 | Accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720855598.1U CN207293124U (en) | 2017-07-14 | 2017-07-14 | Accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207293124U true CN207293124U (en) | 2018-05-01 |
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ID=62451128
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720855598.1U Expired - Fee Related CN207293124U (en) | 2017-07-14 | 2017-07-14 | Accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated |
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| Country | Link |
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| CN (1) | CN207293124U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107380782A (en) * | 2017-07-14 | 2017-11-24 | 大唐环境产业集团股份有限公司 | Accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated |
-
2017
- 2017-07-14 CN CN201720855598.1U patent/CN207293124U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107380782A (en) * | 2017-07-14 | 2017-11-24 | 大唐环境产业集团股份有限公司 | Accurate judgement and the ash hopper device of the accident dust stratification of deduster can be alleviated |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180501 |
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| CF01 | Termination of patent right due to non-payment of annual fee |