CN205850997U - A kind of entry nozzle of medium-speed pulverizer - Google Patents
A kind of entry nozzle of medium-speed pulverizer Download PDFInfo
- Publication number
- CN205850997U CN205850997U CN201620537677.3U CN201620537677U CN205850997U CN 205850997 U CN205850997 U CN 205850997U CN 201620537677 U CN201620537677 U CN 201620537677U CN 205850997 U CN205850997 U CN 205850997U
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- China
- Prior art keywords
- nozzle
- coal
- medium
- baffle plate
- speed pulverizer
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Abstract
The utility model discloses the entry nozzle of a kind of medium-speed pulverizer, include the nozzle ring of some spouts, connect on nozzle ring and have the adjustable baffle plate in some positions, changed the circulation area of described spout by the position of regulating fender, thus regulate ventilation and the wind speed of nozzle.After as-fired coal matter changes, the wind speed at ventilation and nozzle can be changed by the position of regulating fender, thus change the coal seam thickness in medium-speed pulverizer, the ventilation taking into account medium-speed pulverizer is exerted oneself and drying capacity, effectively control fineness of pulverized coal and unburned carbon in flue dust, reduce stone coal discharge amount, improve Boiler Economical Operation.Run duration can be according to the position of the real-time regulating fender of as-fired coal matter and field condition, meet the operation demand in the case of change coal, coal pulverizer coal adaptability is greatly enhanced, and the regulation allowance of system ventilation amount increases, and fineness of pulverized coal and fly ash combustible material are more easy to control.
Description
Technical field
This utility model relates to a kind of medium-speed pulverizer, is specifically related to the entry nozzle of a kind of medium-speed pulverizer coal machine.
Background technology
Medium-speed pulverizer because of small investment, take up an area the advantages such as little, power consumption is low, load variations strong adaptability and be widely used in electricity
Stand boiler, affected by many factors such as the changing of domestic and international electricity coal supply market, transport pressure and costs of transportation, domestic respectively
Thermal power plant constantly widens coal source supply channel, and as-fired coal is inconsistent with designing coal quality, some ature of coal parameters and Power Boilers Design
Ature of coal parameter difference is very big, brings series of problems to station boiler safety and economic operation.
The exerting oneself of coal pulverizer includes milling and exerts oneself, ventilates and exert oneself and drying capacity three kinds, finally exerts oneself and depends in three
Reckling.And the maximum that the design rating of coal pulverizer is coal pulverizer under boiler design ature of coal condition and design fineness of pulverized coal goes out
Power, when ature of coal condition (such as total moisture, ash) changes, pulverizer capacity also can change therewith.
When the ventilation of coal pulverizer changes, its pulverized coal preparation system is exerted oneself, fineness of pulverized coal, stone coal discharge amount etc. all can affect,
Therefore the coal pulverizer adaptability to ature of coal must be strengthened.
Utility model content
Main purpose of the present utility model is to provide the nozzle of a kind of scalable medium-speed pulverizer coal machine entrance ventilation
Assembly, improves the coal pulverizer adaptability to coal, reduces stone coal discharge amount, promotes Boiler Economical Operation.
The utility model discloses the entry nozzle of a kind of medium-speed pulverizer, include the nozzle ring of some spouts, nozzle
Connect on ring and have the adjustable baffle plate in some positions, changed the circulation area of described spout by the position of regulating fender, thus
The ventilation of regulation nozzle and wind speed.
Described baffle plate be shaped as in circular arc, rectangle, trapezoidal or triangle any one, can as required or
Easy for installation select.
Described baffle plate, along the circumference of described nozzle ring or radial arrangement, can select according to processing and in-site installation condition.
Described baffle plate is continuous or intermittently-arranged on nozzle ring, can determine according to onsite application operating mode.
As preferably, described baffle plate offering guide groove, baffle plate is by bolt and the described nozzle ring through guide groove
Connect fixing and position adjustment.The extreme position that the two ends correspondence baffle plate of guide groove adjusts.
Described guide groove is arranged along length direction or the width of described baffle plate, determines according to the arranged direction of baffle plate and leads
Groove offer direction.
Further, the length direction lateral margin of described guide groove is provided with scale.The big I of position adjustments of baffle plate is by mark
Chi directly reads, and makes the adjusting size controllable precise of ventilation.
As preferably, described nozzle ring and baffle plate all use abrasion-resistant stee to make, to ensure its service life.
As preferably, described baffle plate be shaped as circular arc, along described nozzle ring circumferentially, it is simple to install and regulate
The conversion of size.
The adjustable baffle plate of this utility model link position on nozzle ring, changes spout by the position of regulating fender
Circulation area, so that the ventilation of spout and wind speed change.After as-fired coal matter changes, regulating fender can be passed through
Position change the wind speed at ventilation and nozzle, thus change the coal seam thickness in medium-speed pulverizer, take into account middling speed coal-grinding
The ventilation of machine is exerted oneself and drying capacity, effectively controls fineness of pulverized coal and unburned carbon in flue dust, reduces stone coal discharge amount, improves boiler
Performance driving economy.Run duration can meet become coal situation according to the position of the real-time regulating fender of as-fired coal matter and field condition
Under operation demand, its simple in construction, easy to adjust.
In a word, after this utility model arranges the adjustable baffle plate in position on nozzle ring so that coal pulverizer coal adaptability is big
Big enhancing, system ventilation amount regulation allowance increases, and fineness of pulverized coal and fly ash combustible material are more easy to control.
Accompanying drawing explanation
Fig. 1 is the structural representation of one preferred embodiment of this utility model.
Fig. 2 is the A-A section view enlarged diagram in Fig. 1.
Fig. 3 is the C portion enlarged diagram in Fig. 2.
Fig. 4 is a kind of use state partial schematic diagram of the present embodiment.
In figure: 1, nozzle ring；2, baffle plate；21, guide groove；4, bolt；5, scale.
Detailed description of the invention
As shown in Figures 1 to 4, present embodiment discloses the entry nozzle of a kind of medium-speed pulverizer, including nozzle ring 1, gear
Plate 2, guide groove 3, bolt 4 and scale 5.Circumferentially offer a circle spout 11 on nozzle ring 1, nozzle ring 1 is also associated with
The one adjustable baffle plate in circle position 2.
The nozzle ring 1 of the present embodiment is annulus, so the shape of baffle plate 2 also selects corresponding circular arc plate, a circle baffle plate 2
Along nozzle ring 1 circumferentially.The present embodiment uses the arrangement of the most adjacent supporting one piece of baffle plate 2 of two air nozzles 11, often
Slotted hole is offered as guide groove 3, by the position of guide groove 3 corresponding adjacent two when baffle plate 2 is installed on the arc length median plane of block baffle plate 2
At rib 12 between air nozzle 11, in order to baffle plate 2 is fixed with the 1 of nozzle ring after adjusting position.Baffle plate 2 is by through guide groove 3
Bolt 4 be connected fixing with nozzle ring 1.Maximum and minima that the length of bar-shaped trough adjusts as required determine, because of
Two ends for bar-shaped trough are the extreme position that baffle plate adjusts.Certain gap is stayed, it is simple to install between adjacent baffle plate.
In order to find out being sized of baffle plate 2 intuitively, the length direction lateral margin at guide groove 3 is provided with scale 5.Pass through
The data reduction of scale 5 is the adjusting size of ventilation, it is simple to adjust air quantity and wind accurately by the position adjustment of baffle plate 2
Speed.
In order to ensure nozzle ring 1 and the service life of baffle plate 2, both of which selects the thickness wear-resisting steel not less than 12mm
Make.
The operation principle of the present embodiment is as follows: the adjustable baffle plate of link position on nozzle ring, by the position of regulating fender
Put the circulation area changing spout, so that the ventilation of spout and wind speed change.After as-fired coal matter changes,
The wind speed at ventilation and nozzle can be changed by the position of regulating fender, thus it is thick to change the coal seam in medium-speed pulverizer
Degree, the ventilation taking into account medium-speed pulverizer is exerted oneself and drying capacity, effectively controls fineness of pulverized coal and unburned carbon in flue dust, reduces pebble coal
Discharge capacity, improves Boiler Economical Operation.Run duration can according to the position of the real-time regulating fender of as-fired coal matter and field condition,
Meet the operation demand in the case of change coal.Alleviate the pebble coal pollution to environment and the working strength of manual emission simultaneously.
After the adjustable baffle plate in position is set on nozzle ring so that coal pulverizer coal adaptability is greatly enhanced, system ventilation amount
Regulation allowance increases, and fineness of pulverized coal and fly ash combustible material are more easy to control.
Certainly, the shape of baffle plate can also select in rectangle, trapezoidal or triangle according to practical situation any one.
The layout of baffle plate can also conveniently select the radial arrangement along nozzle ring according to field erected.Baffle plate is at nozzle
Intermittently-arranged mode can also be used according to the size of air quantity regulation on ring.
Claims (9)
1. an entry nozzle for medium-speed pulverizer, includes the nozzle ring of some spouts, it is characterised in that: on described nozzle ring
Connect and have the adjustable baffle plate in some positions, changed the circulation area of described spout by the position of regulating fender, thus regulate
The ventilation of nozzle and wind speed.
2. the entry nozzle of medium-speed pulverizer as claimed in claim 1, it is characterised in that: described baffle plate be shaped as circular arc
Any one in shape, rectangle, trapezoidal or triangle.
3. the entry nozzle of medium-speed pulverizer as claimed in claim 1 or 2, it is characterised in that: described baffle plate is along described nozzle
The circumference of ring or radial arrangement.
4. the entry nozzle of medium-speed pulverizer as described in claim 3, it is characterised in that: described baffle plate connects on nozzle ring
Continuous or intermittently-arranged.
5. the entry nozzle of medium-speed pulverizer as claimed in claim 4, it is characterised in that: offer guide groove on described baffle plate,
Baffle plate by being connected fixing and position adjustment through the bolt of guide groove with described nozzle ring.
6. the entry nozzle of medium-speed pulverizer as claimed in claim 5, it is characterised in that: described guide groove is along the length of described baffle plate
Degree direction or width are arranged.
7. the entry nozzle of medium-speed pulverizer as claimed in claim 6, it is characterised in that: the length direction lateral margin of described guide groove
It is provided with scale.
8. the entry nozzle of medium-speed pulverizer as claimed in claim 1, it is characterised in that: described nozzle ring and baffle plate all use
Abrasion-resistant stee makes.
9. the entry nozzle of medium-speed pulverizer as claimed in claim 3, it is characterised in that: described baffle plate be shaped as circular arc
Shape, along described nozzle ring circumferentially.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620537677.3U CN205850997U (en) | 2016-06-06 | 2016-06-06 | A kind of entry nozzle of medium-speed pulverizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620537677.3U CN205850997U (en) | 2016-06-06 | 2016-06-06 | A kind of entry nozzle of medium-speed pulverizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205850997U true CN205850997U (en) | 2017-01-04 |
Family
ID=57638581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620537677.3U Active CN205850997U (en) | 2016-06-06 | 2016-06-06 | A kind of entry nozzle of medium-speed pulverizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205850997U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110801932A (en) * | 2019-10-09 | 2020-02-18 | 中国电建集团长春发电设备有限公司 | Reduce ventilation resistance's rotatory nozzle cascade of medium speed coal mill |
-
2016
- 2016-06-06 CN CN201620537677.3U patent/CN205850997U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110801932A (en) * | 2019-10-09 | 2020-02-18 | 中国电建集团长春发电设备有限公司 | Reduce ventilation resistance's rotatory nozzle cascade of medium speed coal mill |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |