CN202195969U - Pulverized coal sampler - Google Patents
Pulverized coal sampler Download PDFInfo
- Publication number
- CN202195969U CN202195969U CN 201120300558 CN201120300558U CN202195969U CN 202195969 U CN202195969 U CN 202195969U CN 201120300558 CN201120300558 CN 201120300558 CN 201120300558 U CN201120300558 U CN 201120300558U CN 202195969 U CN202195969 U CN 202195969U
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- CN
- China
- Prior art keywords
- sample
- coal dust
- sampling
- coal
- intermediate receptacle
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a pulverized coal sampler. Ball valves are communicated at two ends of a positive displacement intermediate container, an exhaust hole is arranged at the upper part of the intermediate container, and a filter device is arranged on the exhaust hole. The original tube type is changed into a container type, a nitrogen blowing pipeline is removed, the one container volume is the sample amount, the operation is simple, and the sample has representativeness; sampling points are arranged to change the sampling locally from the upper part into sampling on a main pipeline at the lower part, wherein finished products are injected into a blast furnace in the main pipeline, the samples taken out are real and has representativeness, and the sampler is convenient for an operator to sample, and the labor intensity is alleviated.
Description
Technical field
The utility model relates to a kind of ironmaking utensil, the coal dust ST that especially a kind of bf coal injection system uses.
Background technology
Pulverized coal injection in blast furnace is that joint is burnt, important measures of cost efficiency; And whether its physical and chemical index of coal dust that sprays into blast furnace meets technical requirement, take a sample every day it is tested, and whether institute's sample thief is true; Representative, this is the key point of the amount of the establishing point and the sampling mode of ST.The bowl mill pulverized coal preparation system that uses in the past, it is located at sampling spot on the tornado dust collector downtake, the coal dust of taking-up is under-represented, wherein the fine breeze more than 20%, through the cloth bag collection machine recovery.And the medium-speed pulverizer coal-grinding that came into operation in recent years, one-level cloth bag are received powder system; It has been located at sampling spot on the downtake of cloth bag collection machine; The deficiency that also has following several respects in this coal sample of getting coal dust and taking-up: the one, receive the powder cloth bag and generally establish two above ash buckets; The coal dust that takes out on two ash bucket downtakes is distinguishing, and especially granularity is different, and its representative difference of the coal sample of on a downtake, getting; The 2nd, sampling mode is unreasonable; Because pulverized coal preparation system is full negative pressure; No matter stopple coupon is located on the unloading valve of ash bucket downtake still down, during valve on opening stopple coupon, it all can be in pipe exhausting; Coal dust does not flow out or can take away most of fine breeze because of air intake during with ST yet, makes coal sample untrue.And we adopt the stoppage in transit unloading valve usually; Coal dust is accumulated the valve that thief hole opens on the stopple coupon when above again in sampling bag, put coal dust in downtake, adopt the sampling of downtake accumulated powder, it can make coal dust scaffold in downtake; Cause cloth bag and ash bucket accumulated powder, natural firing accident takes place.Accumulated powder is often arranged in the stopple coupon, also need nitrogen purging before the sampling, control the bad outside that is prone to be put into when putting coal outward, contaminated environment, under same operating parameter, its granularity of the coal sample of each class taking-up is different in addition; The 3rd, get once appearance and need climb on more than the 60 meter high platform, increase labour intensity, in order to ensure taking out the true of coal sample, and representative, effectively instruct blast furnace production and safe powder process operation, be necessary the coal dust ST is improved.
The utility model content
The technical matters that the utility model will solve provides a kind of true, representative coal dust ST of coal dust sample of taking-up.
For solving the problems of the technologies described above, the technical scheme that the utility model is taked is: its intermediate receptacle two ends in positive displacement all are communicated with ball valve, are provided with vent port on the top of intermediate receptacle, and vent port is provided with filtration unit.
The described intermediate receptacle of the utility model is an ellipsoid shape or spherical.
The described filtration unit of the utility model is the filter that stainless steel sintering silk screen is processed.
The utility model is applicable to the malleation sampling, during use, is installed on the trunk line of winding-up jar outlet, and the coal dust flow velocity is slow in this segment pipe, concentration is high, and the coal sample of taking-up is representative.
Adopt the beneficial effect that technique scheme produced to be: the utility model changes former cast into container type, has cancelled the nitrogen purging pipeline, and No. one time the container amount is sample size, and simple to operate, sample is representative; On sampling spot is provided with, can be by top spot sampling, change on the trunk line that the bottom finished product sprays into blast furnace and taking a sample, it is true, representative to take out sample, has made things convenient for worker's sampling simultaneously, has alleviated labour intensity.The utility model innovative approach is simple, and is respond well, and sample detection result is for instructing blast furnace production, and powder process operation and coal yard management have vital role.
When the intermediate receptacle of the utility model is the shape of ellipsoid, advance coal, row's coal is smooth and easy, long-pending coal, primary sample can be satisfied the sample size requirement.
Especially adopt stainless steel sintering silk screen to process filter, have the intensity height, good permeability can filter coal dust, and is free from environmental pollution.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is done further detailed explanation.
Fig. 1 is the structural representation of the utility model.
Embodiment
Shown in Figure 1, the middle part of this coal dust ST is the intermediate receptacle 2 of ellipsoid, and intermediate receptacle 2 also can be other positive displacement shape, and is for example spherical, cylindrical etc.; Two ends up and down at intermediate receptacle 2 all are communicated with ball valve, are respectively upper ball valve 1 and following ball valve 3; Be provided with vent port 4 on the top of intermediate receptacle 2, be provided with stainless steel sintering silk screen in the vent port 4 and process filter 5; Also other filtration unit can be set in the vent port 4.
This coal dust ST takes into full account the characteristic of powder air-flow when design, intermediate receptacle 2 is designed to ellipsoid, can effectively capture coal dust like this, can make its smooth discharge again; Simultaneously above intermediate receptacle 2, be provided with vent port 4 and filtration unit, thereby avoided discharge of powder air-flow, the not situation of easily collecting and contaminated environment.
In the pulverized coal injection in blast furnace process, the trunk line of jetting is the coal dust that pulverized coal system is ground, and through winding-up jar pressurization, sprays to unique passage of blast furnace, and the coal dust in its pipeline also is the final products that spray to blast furnace, and the taking-up of the coal dust in pipeline check is the most representative.During use, this coal dust ST is installed in the trunk line below of winding-up jar outlet, because of winding-up jar export to that the coal dust flow velocity is slow in one section pipe of air compensation device, concentration is high, 2 meters high apart from ground, therefore be the optimum position that ST is installed.During installation, the connecting pipe between this ST and the trunk line should be lacked as far as possible, to reduce the accumulation of coal dust here.During sampling, following ball valve 3 is closed, and upper ball valve 1 is opened, and the row of powder air-flow in the trunk line enters in the intermediate receptacle 2, and waste gas is deflated hole 4 and discharges, and coal dust is full of intermediate receptacle 2 very soon; After close upper ball valve 1, opening down ball valve 3, coal dust is placed in the sampling bag through following ball valve 3 swimmingly, accomplishes sampling.Whole sample time, short, simple to operate, clarity, coal sample were true.
Claims (3)
1. coal dust ST, it is characterized in that: its intermediate receptacle in positive displacement (2) two ends all are communicated with ball valve, are provided with vent port (4) on the top of intermediate receptacle (2), and vent port (4) is provided with filtration unit.
2. coal dust ST according to claim 1 is characterized in that: described intermediate receptacle (2) is an ellipsoid shape or spherical.
3. coal dust ST according to claim 1 and 2 is characterized in that: described filtration unit is the filter (5) that stainless steel sintering silk screen is processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120300558 CN202195969U (en) | 2011-08-18 | 2011-08-18 | Pulverized coal sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120300558 CN202195969U (en) | 2011-08-18 | 2011-08-18 | Pulverized coal sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202195969U true CN202195969U (en) | 2012-04-18 |
Family
ID=45950872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120300558 Expired - Fee Related CN202195969U (en) | 2011-08-18 | 2011-08-18 | Pulverized coal sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202195969U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033396A (en) * | 2012-12-31 | 2013-04-10 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Direct-blowing cement sampler |
| CN105628444A (en) * | 2016-03-21 | 2016-06-01 | 河北钢铁股份有限公司承德分公司 | Sintering production lime powder sampler and sampling method |
-
2011
- 2011-08-18 CN CN 201120300558 patent/CN202195969U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033396A (en) * | 2012-12-31 | 2013-04-10 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Direct-blowing cement sampler |
| CN105628444A (en) * | 2016-03-21 | 2016-06-01 | 河北钢铁股份有限公司承德分公司 | Sintering production lime powder sampler and sampling method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120418 Termination date: 20120818 |