CN203949809U - Online fly ash sampling device based on fly-ash separator ash discharge system - Google Patents
Online fly ash sampling device based on fly-ash separator ash discharge system Download PDFInfo
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- CN203949809U CN203949809U CN201420361117.8U CN201420361117U CN203949809U CN 203949809 U CN203949809 U CN 203949809U CN 201420361117 U CN201420361117 U CN 201420361117U CN 203949809 U CN203949809 U CN 203949809U
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- ash
- fly
- flying dust
- filtration unit
- dust filtration
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Abstract
The utility model provides the online fly ash sampling device based on fly-ash separator ash discharge system, comprise stopple coupon, flying dust filtration unit and gathering-device, one end of stopple coupon is connected to fly-ash separator ash discharge system, the other end of stopple coupon connects flying dust filtration unit, and flying dust filtration unit is provided with the first outlet, the upper gathering-device of installing of the first outlet, it is characterized in that, described flying dust filtration unit is also provided with the second outlet, the upper filter bag of installing of the second outlet, and described filter bag is connected with elastic device.The utility model is collected the filtration of flying dust by filter bag realization is set on flying dust filtration unit, simple in structure, easy for installation, and, filter bag fixedly mounts by elastic device, guarantees that filter bag launches to guarantee filter effect completely, and controllability is stronger simultaneously.
Description
Technical field
The utility model relates to steam power plant field, particularly, relates to the online fly ash sampling device based on fly-ash separator ash discharge system.
Background technology
In thermal power plant's station boiler, for detecting boiler coal combustion case, flying dust carbon containing sampling apparatus is generally installed.Flying dust carbon containing sampling apparatus is mainly used in gathering flying dust sample, and the flying dust sample after gathering is detected to analysis, judges the burning performance of boiler by the massfraction of carbon containing in analysis result, and then provides reliable foundation for boiler economic combustion adjustment.Therefore, the collection of flying dust sample is particularly important, and the flying dust sample that only has flying dust carbon containing sampling apparatus to collect is identical with the flying dust after Actual combustion, could obtain reliable testing result.
Now, a lot of power plant arrange online flying dust carbon containing sampling apparatus instantaneous transmission flying dust carbon containing data, but equipment failure rate is high, and maintenance cost is high, and more power plant is selected need not.And existing flying dust carbon containing sampling apparatus mainly comprises two kinds: a kind of is impact type fly ash sampler, impact type fly ash sampler is arranged in flue downside, but impact type fly ash sampler only just can be collected flying dust sample when flyash impact, the efficiency of collecting is low, and what collect is all coarse particle flying dust, flying dust carbon containing numerical value representativeness is not strong.Another is the sampling apparatus based on cyclone dust removal principle, but its dust collection rate is low, does not possess equally representativeness.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides the online fly ash sampling device based on fly-ash separator ash discharge system, particularly, has adopted following technical scheme:
Online fly ash sampling device based on fly-ash separator ash discharge system, comprise stopple coupon, flying dust filtration unit and gathering-device, one end of stopple coupon is connected to fly-ash separator ash discharge system, the other end of stopple coupon connects flying dust filtration unit, and flying dust filtration unit is provided with the first outlet, the upper gathering-device of installing of the first outlet, it is characterized in that, described flying dust filtration unit is also provided with the second outlet, the upper filter bag of installing of the second outlet, and described filter bag is connected with elastic device.
Further, described flying dust filtration unit is enclosed construction, and the bottom of flying dust filtration unit is funnel-form; The first described outlet is arranged on the bottom of flying dust filtration unit, and the second outlet is arranged on the upper end of flying dust filtration unit.
Further, on described flying dust filtration unit, be fixedly connected with support, described elastic device is rack-mount.
Further, described support extends upwardly to the top of flying dust filtration unit, and elastic device is lifted on support; Described filter bag one end arranges opening, and the opening of filter bag is arranged in the second outlet, and the other end of filter bag is blind end, and blind end connects elastic device.
Further, the opening of described filter bag is arranged in the second outlet by interior retainer plate and clip.
Further, on described flying dust filtration unit, be fixedly connected with and be useful on the supporting leg that supports flying dust filtration unit.
Further, described supporting leg comprises at least three, and supporting leg circumferentially evenly arranges along flying dust filtration unit.
Further, on described stopple coupon, be provided with ball valve.
Further, described stopple coupon connects ash discharge flue or the storehouse pump of fly-ash separator ash discharge system by orifice plate.
Further, described filter bag is membrane bag filter.
The utility model picks out fairlead on fly-ash separator ash discharge system, this fairlead access online fly ash sampling device based on fly-ash separator ash discharge system of the present utility model.The potpourri of flying dust (air and dust), malleation dry ash pipeline (or storehouse pump) through fly-ash separator ash discharge system enters ball valve through throttling orifice plate, by ball valve, stopple coupon, enter flying dust filtration unit, air can be discharged through the filter bag of flying dust filtration unit, and dust cannot pass through, to stay in flying dust filtration unit, final settlement is in the gathering-device of bottom, adopt the mode of hand sampling, the dust in gathering-device is taken away and chemically examined.
When hand sampling, should first close ball valve, prevent that between sampling date, flying dust sprays into, cause leakage pollution environment.In order to clear up filter bag inside, adhere to dust, before opening gathering-device, should manually rock filter bag, allow dust fall into filtration unit, then open filtration unit, dust is taken away.
Therefore, the utlity model has following advantage:
1, sampling spot of the present utility model is on the ash discharge system of electric precipitation, electricity bag composite dedusting or sack cleaner, the flying dust sample of the collecting actual conditions of more fitting.
2, the utility model can directly utilize the malleation sampling of ash discharge system, and except control system, device no longer needs other power, makes sampling more simple and convenient.
3, the utility model is collected the filtration of flying dust by filter bag realization is set on flying dust filtration unit, simple in structure, easy for installation, and, filter bag fixedly mounts by elastic device, guarantees that filter bag launches to guarantee filter effect completely, and controllability is stronger simultaneously.
4, ball valve of the present utility model adjustable actuation time of ratio, meets class, day sampling requirement.
5, of the present utility model simple in structure, easy for installation, workable.
Accompanying drawing explanation
Fig. 1 structural representation of the present utility model.
Label declaration in accompanying drawing: 1-orifice plate 2-ball valve 3-stopple coupon 4-support 5-elastic device 6-filter bag 7-second outlet 8-retainer plate 9-clip 10-flying dust filtration unit 11-the first outlet 12-gathering-device 13-leg.
Embodiment
Below in conjunction with accompanying drawing, the online fly ash sampling device based on fly-ash separator ash discharge system of the present utility model is described in detail:
As shown in Figure 1, online fly ash sampling device based on fly-ash separator ash discharge system of the present utility model, comprise stopple coupon 3, flying dust filtration unit 10 and gathering-device 12, one end of stopple coupon 3 is connected to fly-ash separator ash discharge system, the other end of stopple coupon 3 connects flying dust filtration unit 10, flying dust filtration unit 10 is provided with the first outlet 11, in the first outlet 11, gathering-device 12 is installed, described flying dust filtration unit 10 is also provided with the second outlet 7, in the second outlet 7, filter bag 6 is installed, described filter bag 6 is connected with elastic device 5.
The equipment that dust is separated from flue gas is fly-ash separator or cleaner.Drag losses and efficiency of dust collection when for the performance of fly-ash separator, accessible gas flow, gas are by fly-ash separator are expressed.Fly-ash separator is divided into according to dedusting method: (1) dry collector; (2) half dry type fly-ash separator; (3) wet scrubber.The utility model is mainly applicable to dry collector or half dry type fly-ash separator, and the best results of dry collector.The dust that fly-ash separator is collected finally can be discharged through ash discharge system, and having changed existing sampler, fly ash sampling device of the present utility model is arranged in the mode on boiler air preheater exhaust pass, sampler of the present utility model is the ash discharge system that is connected to fly-ash separator, particularly, described stopple coupon 3 connects ash discharge flue or the storehouse pump of fly-ash separator ash discharge system.Like this, not only convenient sampler sampling, and the flying dust sample of obtaining approaches actual conditions more, to adopting the flying dust sample of fly ash sampling device collection of the present utility model to chemically examine, has more real directive significance.
In order to increase portability of the present utility model, facilitate the connection of fly ash sampling device of the present utility model, stopple coupon 3 of the present utility model preferably adopts rubber tube.Stopple coupon 3 is communicated with fly-ash separator ash discharge system and flying dust filtration unit 10, the flying dust of fly-ash separator ash discharge system enters flying dust filtration unit 10 by stopple coupon 3 under positive pressure, and flying dust filtration unit 10 is respectively arranged with for the second outlet 7 of discharged air with for discharging the first outlet 11 of dust.The first outlet 11 bottoms are connected to gathering-device 12, and gathering-device 12 is collected the dust filtering down through flying dust filtration unit 10, by way of manual operation, regularly the sample in sampler 12 are taken away and are chemically examined.In order to guarantee to enter smooth discharge of air of flying dust filtration unit 10, dust is filtered collection, in the second outlet 7 of the present utility model, filter bag 6 is installed, filter bag 6 is connected with elastic device 5, elastic device 5 applies the certain elastic force of filter bag 6, guarantee that filter bag 6 launches completely, has better filter effect.
As a kind of preferred implementation of the present utility model, described flying dust filtration unit 10 is enclosed construction, and the bottom of flying dust filtration unit 10 is funnel-form; The first described outlet 11 is arranged on the bottom of flying dust filtration unit 10, and the second outlet 7 is arranged on the upper end of flying dust filtration unit 10.Flying dust filtration unit 10 is designed to enclosed construction, is the validity in order to ensure filter bag 6 on the one hand, is on the other hand to cause environmental pollution in order to prevent from revealing.It is that dust for convenient collection is discharged to gathering-device 12 from the first outlet 11 that flying dust filtration unit 10 bottoms are funnel-form.
As a kind of preferred implementation of the present utility model, in order to realize the installation of filter bag 6, the utility model is fixedly connected with support 4 on described flying dust filtration unit 10, and described elastic device 5 is arranged on support 4.
Particularly, described support 4 extends upwardly to the top of flying dust filtration unit 10, and elastic device 5 is lifted on support 4; Described filter bag 6 one ends arrange opening, and the opening of filter bag 6 is arranged in the second outlet 7, and the other end of filter bag 6 is blind end, and blind end connects elastic device 5.
As a kind of preferred implementation of the present utility model, the utility model has provided a kind of filter bag 6 and has been arranged on the concrete mounting means in the second outlet 7, and the opening of described filter bag 6 is arranged in the second outlet 7 by interior retainer plate 8 and clip 9.In the utility model adopts, retainer plate 8 and clip 9 are by the open card of filter bag 6 in the second outlet 7, and mounting means is simple, and dismounting and change is convenient.
The quality of the filter effect of flying dust filtration unit 10 of the present utility model directly depends on and filter bag 6 therefore, in order to ensure flying dust filtration unit 10, have good filter effect, and filter bag 6 of the present utility model is selected membrane bag filter.It is to produce separately according to a set of strict production technology that membrane bag filter is produced, and by the PTFE microporous membrane stretching through broadwise, utilizes pressure and high temperature to fit in different Nomex surfaces.When fitting with thermoplastic fibre felt, non-thermoplastic fiber's felt must be first to its carry out surface chemistry, Teflon is laminating with PTFE again after processing.In addition, some specialty fibers need carry out surface treatment by special chemical method, to reach the strongest laminating effect.PTFE film has from the micropore size of 0.1-3.5 μ m, and micropore porosity reaches 75-90%.So high micropore porosity is enough to make a large amount of dense water vapor freely to pass through, and this is freely to spread and by the space of film due to small aqueous vapor molecular energy.Therefore, membrane bag filter has advantages of as follows:
1) realized surface filtration, dust discharge amount is almost nil, can meet each emission standard.
2) the best dust cake performance that comes off, improves the throughput of dust-collecting equipment, reduces the Pressure Drop of flying dust filtration unit.
3) extend the serviceable life of filter bag, reduced cleaning cycle and power consumption, saved the maintenance expense of flying dust filtration unit.
4) improve the filtration velocity of flying dust filtration unit, reduce and reduce use volume and the cost of investment of dust-collecting equipment.
5) reduce the total investment expenses of flying dust filtration unit, running operation expense, increases turnout and expands product profit.
As a kind of preferred implementation of the present utility model, on described flying dust filtration unit 10, be fixedly connected with and be useful on the supporting leg 13 that supports flying dust filtration unit 10.
Particularly, in order to ensure flying dust filtration unit 10, can obtain effective support, guarantee its stability, described supporting leg 13 comprises at least three, and supporting leg 13 circumferentially evenly arranges along flying dust filtration unit 10.Further, described supporting leg 13 is angle steel, and angle steel is commonly called as angle bar, is the rectangular steel of the orthogonal one-tenth dihedral in both sides, is mainly divided into equal angle and unequal angle two classes, and wherein unequal angle can be divided into again not two kinds of uniform thickness of inequilateral uniform thickness and inequilateral.Supporting leg 13 of the present utility model is preferred selects equal angle, and arranges four.
As a kind of preferred implementation of the present utility model, on described stopple coupon 3, be provided with ball valve 2.Ball valve 2 can be realized this control of the present utility model, when needs sample, stopple coupon 3 is connected to after ash discharge system, open ball valve, realize sample collection, when hand sampling, should first close ball valve 2, prevent dust jetting device between sampling date, cause leakage pollution environment.Particularly, ball valve 2 of the present utility model can be chosen ceramic ball valve, and ceramic ball valve has high wear-resistant, corrosion-resistant, erosive wear resistance, and the advantage such as thermal insulation is good, thermal expansion is little.
As a kind of preferred implementation of the present utility model, described stopple coupon 3 connects ash discharge flue or the storehouse pump of fly-ash separator ash discharge system by orifice plate 1.Orifice plate is mounted in closed conduct, by the principle of restriction device, measures the detecting element of liquid, gas and steam flow.Standard orifice plate is a sheet metal with round hole, and circular hole wall and orifice plate front end face meet at right angles, and during installation, orifice plate axle center is concentric with conduit axis.As a kind of preferred implementation of the present utility model, described gathering-device 12 is collection bucket, and described collection bucket is dismountable to be arranged in the first outlet 11, convenient sampling.
As a kind of preferred implementation of the present utility model, the described concrete spring selected of elastic device 5, when filter bag 6 is arranged on support 4, spring is in extended state, and then spring applies an elastic force to filter bag 6, stretching filter bag 6 launches it completely, guarantees the filtration validity of filter bag 6.
The utility model is by picking out fairlead on fly-ash separator ash discharge system, and this fairlead accesses fly ash sampling device of the present utility model, as shown in Figure 1:
The potpourri of air and dust, through malleation ash discharge flue (or storehouse pump), through throttling orifice plate 1, enter ball valve 2, by ball valve 2, stopple coupon 3, enter flying dust filtration unit 10, air can be discharged through filter bag 6, and dust cannot pass through, by 10 final settlements of flying dust filtration unit, in bottom gathering-device 12, adopt the mode artificially collecting, the interior dust of gathering-device 12 is taken away as the foundation of chemical examination.
When hand sampling, should first close ball valve 2, prevent dust jetting device between sampling date, cause leakage pollution environment; For 6 of filter bags of cleaning adhere to dust, before opening gathering-device 12, should manually rock filter bag 6, allow dust fall into gathering-device 12, then open gathering-device 12, dust is taken away.
The utility model fly ash sampling device steering logic 1 is: ash discharge flue pressure signal or storehouse switch pump signal, when flue pressure arrives certain numerical value or ash work, time delay 5-30S are pumped in storehouse, open ball valve, open 1---99S and close ball valve, close 1-10 minute, continue to open ball valve, open 1---99S and close ball valve, close 1-10 minute, move in circles, when ash discharge flue pressure signal closes signal arrival lower than working value or storehouse pump, ball valve is closed, this EOP (end of program).This unlatching, shut-in time can be set voluntarily according to ruuning situation.
The utility model fly ash sampling device steering logic 2 is: ash discharge flue pressure signal or storehouse switch pump signal, when flue pressure arrives certain numerical value or ash work is pumped in storehouse, time delay 5-30S, opens ball valve, opens 1---99S and closes ball valve, close 1-10 minute, continue to open ball valve, open 1---99S and close ball valve, close 1-10 minute, move in circles, this time pumps ash work accumulated time with flue pressure arrival certain numerical value (working pressure) or storehouse and is as the criterion.When flue pressure signal closes lower than working value or storehouse pump signal, ball valve is closed automatically, and time-out.This unlatching, shut-in time can be set voluntarily according to ruuning situation, with gathering-device capacity, meet 6 hours, 8 hours, 12 hours or 24 hour working time (this time is determined according to operation order of classes or grades at school concrete condition).
The utility model sampling dust is if electric precipitation, adopt electric precipitation one electric field dust, one electric field dust collection rate reaches 80%-90%, electric field 10%-20% after coordinating, if bag-type dust its dust collection rate reach more than 99.9%, if electrostatic fabric filter, electric precipitation coordinates bag dedusting, according to equal temporal quality ratio-dependent principle, samples.So just solved sample representation not enough, the problem of flying dust carbon containing deviation, for boiler economic combustion adjustment provides reliable foundation.
The above is only preferred embodiment of the present utility model, not the utility model is done to any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet not in order to limit the utility model, any technician who is familiar with this patent is not departing within the scope of technical solutions of the utility model, when can utilizing the technology contents of above-mentioned prompting to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solutions of the utility model, any simple modification of above embodiment being done according to technical spirit of the present utility model, equivalent variations and modification, all still belong in the scope of the utility model scheme.
Claims (10)
1. the online fly ash sampling device based on fly-ash separator ash discharge system, comprise stopple coupon (3), flying dust filtration unit (10) and gathering-device (12), one end of stopple coupon (3) is connected to fly-ash separator ash discharge system, the other end of stopple coupon (3) connects flying dust filtration unit (10), flying dust filtration unit (10) is provided with the first outlet (11), the upper gathering-device (12) of installing of the first outlet (11), it is characterized in that, described flying dust filtration unit (10) is also provided with the second outlet (7), the upper filter bag (6) of installing of the second outlet (7), described filter bag (6) is connected with elastic device (5).
2. the online fly ash sampling device based on fly-ash separator ash discharge system according to claim 1, is characterized in that, described flying dust filtration unit (10) is enclosed construction, and the bottom of flying dust filtration unit (10) is funnel-form; The first described outlet (11) is arranged on the bottom of flying dust filtration unit (10), and the second outlet (7) is arranged on the upper end of flying dust filtration unit (10).
3. the online fly ash sampling device based on fly-ash separator ash discharge system according to claim 1 and 2, it is characterized in that, on described flying dust filtration unit (10), be fixedly connected with support (4), described elastic device (5) is arranged on support (4).
4. the online fly ash sampling device based on fly-ash separator ash discharge system according to claim 3, it is characterized in that, described support (4) extends upwardly to the top of flying dust filtration unit (10), and elastic device (5) is lifted on support (4); Described filter bag (6) one ends arrange opening, and it is upper that the opening of filter bag (6) is arranged on the second outlet (7), and the other end of filter bag (6) is blind end, and blind end connects elastic device (5).
5. the online fly ash sampling device based on fly-ash separator ash discharge system according to claim 4, is characterized in that, the opening of described filter bag (6) is arranged in the second outlet (7) by interior retainer plate (8) and clip (9).
6. the online fly ash sampling device based on fly-ash separator ash discharge system according to claim 1 and 2, is characterized in that, is fixedly connected with and is useful on the supporting leg (13) that supports flying dust filtration unit (10) on described flying dust filtration unit (10).
7. the online fly ash sampling device based on fly-ash separator ash discharge system according to claim 6, is characterized in that, described supporting leg (13) comprises at least three, and supporting leg (13) circumferentially evenly arranges along flying dust filtration unit (10).
8. the online fly ash sampling device based on fly-ash separator ash discharge system according to claim 1, is characterized in that, is provided with ball valve (2) on described stopple coupon (3).
9. according to the online fly ash sampling device based on fly-ash separator ash discharge system described in claim 1 or 8, it is characterized in that, described stopple coupon (3) connects ash discharge flue or the storehouse pump of fly-ash separator ash discharge system by orifice plate (1).
10. the online fly ash sampling device based on fly-ash separator ash discharge system according to claim 1, is characterized in that, described filter bag (6) is membrane bag filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420361117.8U CN203949809U (en) | 2014-07-01 | 2014-07-01 | Online fly ash sampling device based on fly-ash separator ash discharge system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420361117.8U CN203949809U (en) | 2014-07-01 | 2014-07-01 | Online fly ash sampling device based on fly-ash separator ash discharge system |
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| Publication Number | Publication Date |
|---|---|
| CN203949809U true CN203949809U (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420361117.8U Expired - Fee Related CN203949809U (en) | 2014-07-01 | 2014-07-01 | Online fly ash sampling device based on fly-ash separator ash discharge system |
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| CN (1) | CN203949809U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092300A (en) * | 2015-06-03 | 2015-11-25 | 解海龙 | Method for automatic collection of ash sample at ash discharge port of coal-fired boiler dry type dust remover |
-
2014
- 2014-07-01 CN CN201420361117.8U patent/CN203949809U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105092300A (en) * | 2015-06-03 | 2015-11-25 | 解海龙 | Method for automatic collection of ash sample at ash discharge port of coal-fired boiler dry type dust remover |
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| Date | Code | Title | Description |
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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: 20141119 |
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| CF01 | Termination of patent right due to non-payment of annual fee |