CN207275451U - It can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster - Google Patents
It can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster Download PDFInfo
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- CN207275451U CN207275451U CN201720857050.0U CN201720857050U CN207275451U CN 207275451 U CN207275451 U CN 207275451U CN 201720857050 U CN201720857050 U CN 201720857050U CN 207275451 U CN207275451 U CN 207275451U
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Abstract
The utility model offer is a kind of to be can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster, and be arranged at the ash bucket of a deduster, which has a design carrying material position and a high charge level early warning material position；Including：One dust leg road, stretches into the top inside bucket body and is equipped with an ash inlet tube, and the lower vertical stretched out outside bucket body is set；The mouth of pipe of the ash inlet tube is carried between material position and high charge level early warning material position positioned at the design；The mouth of pipe of dust leg road lower part is closed by a valve.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 passed through automatic removing dust safety valve ash discharge, the automatic defencive function realized to deduster.
Description
Technical field
The utility model is related to environmental technology field, more particularly to cleaner, and in particular to one kind can determine whether and to except
The accident dust stratification of dirt device carries out the safe and simple device for putting ash.
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 can determine whether and to deduster
Accident dust stratification carries out the safe and simple device for putting ash, can easily judge that dust collector ash hopper is in normal in detection mouth
State or abnormality.And can be after the grey bearing capacity of storage be designed beyond deduster, dust is higher by normal storage in ash bucket
After ash quantity, dust stratification is set to pass through automatic removing dust safety valve ash discharge, the automatic defencive function realized to deduster.
In order to achieve the above object, the technical scheme adopted by the utility model is that：
It can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster, be arranged at the ash of a deduster
There is a design to carry material position and a high charge level early warning material position for bucket, the ash bucket；Including：
One dust leg road, stretches into the top inside bucket body and is equipped with an ash inlet tube, and the lower vertical stretched out outside bucket body is set；
The mouth of pipe of the ash inlet tube is carried between material position and high charge level early warning material position positioned at the design；
The mouth of pipe of dust leg road lower part is closed by a valve.
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 ash bucket in support.
Further, the dust leg road passes through the wall of ash bucket by being opened in a through hole of ash bucket, and passes through welding side
Formula is fixedly arranged on the ash bucket.
Further, the lower part in the dust leg road is provided with insulating layer.
Further, the valve is for manual ball valve or manually to pressing from both sides butterfly valve.
Further, the ash discharge that the mouth of pipe of the lower part in the dust leg road is set apart from ground or for nozzle position is received
The distance for collecting container is no more than 0.5 meter.
Further, the mouth of pipe of the lower part in the dust leg road sets up spray equipment.
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 valve is opened, under the action of dust stratification tension force, you can by dust stratification by putting
Grey pipeline discharge.
Although in this way, only adding a pipeline structure, very reliable fault can be played and exclude and extend processing time
Effect, greatly improve the safety and stability of ash bucket, and low cost, can't additionally increase excessive load, avoid because plus
If excessive overweight troubleshooting element, increases existing equipment loading effect equipment normal operation.In addition, the ash of the utility model
Bucket shape into ash discharge system there is high stability in itself, be not in failure substantially, and because its working status can letter
Just inspection, therefore the possibility of failure by periodic inspection, can be eliminated.
Brief description of the drawings
Fig. 1 is the structure diagram of existing dust collector ash hopper in background technology.
Fig. 2 is that can determine whether in one embodiment of the utility model and put ash to the progress of deduster accident dust stratification is safe and simple
Device mounting structure schematic diagram.
Fig. 3 is that can determine whether in one embodiment of the utility model and put ash to the progress of deduster accident dust stratification is safe and simple
Device in 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 described in Figure 2, in one embodiment, there is provided one kind can determine whether and safety, letter are carried out to the accident dust stratification of deduster
Just the device of ash is put, is arranged at the ash bucket 1 of deduster, which has design carrying material position and high charge level early warning material position, the latter
The material position of high charge level switch 2 is installed；The two material positions are all known design parameters, can during each ash bucket redesign
Determine the two material positions, then arrange corresponding device；Device includes：
Dust leg road 2, stretches into the top inside bucket body and is equipped with ash inlet tube 21, and the lower vertical stretched out outside bucket body is set；
The mouth of pipe of ash inlet tube 21 is located between previous designs carrying material position and high charge level early warning material position；
The mouth of pipe of dust leg road lower part is closed by valve 22.
In addition, with reference to figure 3, the mouth of pipe direction of ash inlet tube 21 is backwards to the direction that ash bucket inside smoke flows.And ash inlet tube 21
The mouth of pipe be downward inclined tube mouth.Can thus prevent the mouth of pipe of ash inlet tube in face of flue gas cause coal ash directly because air-flow into
Enter ash inlet tube, angle is that the ash that deduster falls in order to prevent falls directly into ash inlet tube downwards, can be most by this structure design
Ash accumulation is allowed to limits 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
Ash enters ash inlet tube.
In addition, the top in dust leg road supports the pipe collar on 11 to fix by being arranged at the inside of ash bucket 1.Dust leg road 2
The wall of ash bucket 1 is passed through by the through hole for being opened in ash bucket 1, and the ash bucket is fixedly arranged on for example, 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.
In addition, valve is for manual ball valve or manually to pressing from both sides butterfly valve.It is preferred that ball valve, since the dust stratification of ash bucket is more similar to liquid
Characteristic, will not be blocked using ball valve, and be avoided that the valve plate dust stratification situation that butterfly valve is likely to occur.
In addition, the ash discharge collection vessel that the mouth of pipe of the lower part in dust leg road is set apart from ground or for nozzle position
Distance is no more than 0.5 meter.Airborne dust in order to prevent, the mouth of pipe of the lower part in dust leg road can set up spray equipment (not shown).
By above-mentioned, ash inlet tube 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, the manually-operated gate that accident dust stratification judgment means are located at outside ash bucket is opened, can substantially be observed outer
Portion's air may determine that normal inside ash bucket at this time to the air draught of ash bucket inside.There are a large amount of dusts to flow out if opening manually-operated gate,
Illustrate occurred high-order dust stratification failure in deduster.And illustrate that high charge level switch probably has occurred and that failure.At this time,
Can be while by the ash discharge of dust leg road, using usual manner by the urgent cinerary device of accident, but due to having passed through
Dust leg road is preposition to start ash discharge, can extend processing time, alleviates the critical state of affairs, improves the security and stabilization of equipment
Property.
Deduster occur serious dust stratification failure when, open valve put ash, can to outflow dust stratification water spray dust, it is necessary to draw
Fortune is how much, just releases how many ashes, so i.e. safe, will not there are serious airborne dust, environmental pollution, endanger showing for operational outfit
As.
It should be noted that the device that above-described embodiment provides is safety apparatus, it is not regular use.
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 (9)
1. can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster, the ash bucket of a deduster is arranged at,
There is the ash bucket design to carry material position and a high charge level early warning material position；It is characterised in that it includes：
One dust leg road, stretches into the top inside bucket body and is equipped with an ash inlet tube, and the lower vertical stretched out outside bucket body is set；
The mouth of pipe of the ash inlet tube is carried between material position and high charge level early warning material position positioned at the design；
The mouth of pipe of dust leg road lower part is closed by a valve.
2. as claimed in claim 1 can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster, it is special
Sign is that the mouth of pipe direction of the ash inlet tube is backwards to the direction that ash bucket inside smoke flows.
3. as claimed in claim 2 can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster, it is special
Sign is that the mouth of pipe of the ash inlet tube is downward inclined tube mouth.
4. as claimed in claim 1 can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster, it is special
Sign is that the top in the dust leg road is fixed by being arranged at the pipe collar inside ash bucket in support.
5. it can determine whether as described in claim 1 or 4 and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster,
It is characterized in that, the dust leg road passes through the wall of ash bucket by being opened in a through hole of ash bucket, and it is fixed by welding manner
In the ash bucket.
6. as claimed in claim 1 can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster, it is special
Sign is that the lower part in the dust leg road is provided with insulating layer.
7. as claimed in claim 1 can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster, it is special
Sign is that the valve is for manual ball valve or manually to pressing from both sides butterfly valve.
8. as claimed in claim 1 can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster, it is special
Sign is, the ash discharge collection vessel that the mouth of pipe of the lower part in the dust leg road is set apart from ground or for nozzle position away from
From no more than 0.5 meter.
9. as claimed in claim 8 can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster, it is special
Sign is that the mouth of pipe of the lower part in the dust leg road sets up spray equipment.
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| CN201720857050.0U CN207275451U (en) | 2017-07-14 | 2017-07-14 | It can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster |
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| CN201720857050.0U CN207275451U (en) | 2017-07-14 | 2017-07-14 | It can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107380783A (en) * | 2017-07-14 | 2017-11-24 | 大唐环境产业集团股份有限公司 | It can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster |
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- 2017-07-14 CN CN201720857050.0U patent/CN207275451U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107380783A (en) * | 2017-07-14 | 2017-11-24 | 大唐环境产业集团股份有限公司 | It can determine whether and the safe and simple device for putting ash is carried out to the accident dust stratification of deduster |
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