CN105698205B - Throttle resistance regulating device and pulverized coal preparation system - Google Patents
Throttle resistance regulating device and pulverized coal preparation system Download PDFInfo
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- CN105698205B CN105698205B CN201410706238.6A CN201410706238A CN105698205B CN 105698205 B CN105698205 B CN 105698205B CN 201410706238 A CN201410706238 A CN 201410706238A CN 105698205 B CN105698205 B CN 105698205B
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- 239000003245 coal Substances 0.000 title claims abstract description 119
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Abstract
The present invention provides a kind of throttle resistance regulating device and pulverized coal preparation system, the throttle resistance regulating device includes：Metal shell and the intracorporal multiple adjustable vane baffles of the setting metal-back, a transmission mechanism and a driving device；The metal shell is welded between two sections of pulverized coal feed pipes by two bottom surfaces；The adjustable vane baffle connects the transmission mechanism, the transmission mechanism connection driving device；The transmission mechanism drives multiple adjustable vane baffles to be opened and closed simultaneously to the center of circle direction of the pulverized coal channel at an angle in the plane perpendicular to the pulverized coal channel under the drive of the driving device.By the invention it is possible to accurately adjust the aperture of adjustable vane baffle at any time according to wind speed size or coal powder density size in pulverized coal channel, realizes and the dynamic of pulverized coal channel system resistance is adjusted, achieve the purpose that even regulation flow velocity and coal powder density.
Description
Technical field
The present invention relates to the pulverized coal preparation system technologies in Utility Boiler Technology, save especially with regard to one of pulverized coal preparation system
Flow resistance apparatus for adjusting force and pulverized coal preparation system.
Background technique
In pressurized direct pulverizing coal system station boiler, by a certain number of defeated powder between coal pulverizer outlet and burner
Pipeline connection, general Process In A Tangential Firing separate unit coal pulverizer match four duff pipes, Opposite Firing Boiler separate unit coal pulverizer
With 4-6 root duff pipe.
Since coal pulverizer exports the difference of each pulverized coal feed pipe length and trend, wind powder mixture inside it deposit by flow resistance
In larger difference, the resistance pieces such as throttling set are installed, usually on pulverized coal feed pipe to adjust the wind powder air-flow on each pulverized coal feed pipe
Flow resistance so that wind speed, pulverized-coal concentration at burner nozzle corresponding with same coal pulverizer etc. is uniformly.
Current plant controller of coal mill of boiler pulverized coal feed pipe resistance adjusts based on manual adjustable contraction, and a small number of boiler installings are fixed
Formula throttling shrinkage cavity.
Fig. 1 is existing pulverized coal preparation system structural schematic diagram, and in figure, 11 be coal pulverizer outlet portal, and 12 contract for fixation type throttle
Hole or manual adjustable contraction, 14 be pulverized coal channel.The pulverized coal preparation system for installing fixation type throttle shrinkage cavity, it is each defeated by calculating coal pulverizer
System resistance on powder pipeline theoretically obtains each pulverized coal channel resistance error value of coal pulverizer on the same stage, and inclined according to the resistance
Difference, installing has the fixation type throttle part of certain resistance on each pulverized coal channel, inclined to eliminate the resistance between pulverized coal channel
Difference, and then guarantee coal dust conveying uniform, avoid burning deflection.
It for manual adjustable contraction, needs to carry out cold conditions ventilation experiment before boiler startup, coal pulverizer is measured by test
Resistance in each duff pipe, and the aperture of manual adjustable contraction is adjusted, the resistance error between pulverized coal channel is eliminated, so that coal-grinding
It is consistent that interior wind speed is respectively in charge of in machine outlet.
For inventor in realizing process of the present invention, discovery uses fixation type throttle hole or manual adjustable contraction in the prior art
As the boiler of throttling set, at least have the disadvantage that.
Do not have tune even if coal pulverizer pulverized coal feed pipe resistance has unevenness after unit puts into operation using fixation type throttle hole yet
Energy saving power, it is necessary to re-replace throttling set just and can guarantee that wind speed is consistent in coal pulverizer pulverized coal feed pipe；
Throttled shrinkage cavity using Manual adjustable, coal pulverizer pulverized coal feed pipe internal resistance there are deviation, can under cold conditions operating condition into
Row ventilation experiment, adjustment throttling shrinkage cavity aperture carries out resistance leveling work, but it adjusts quite bothersome and complex procedures, has very
Big hysteresis quality.
Fixed or manual adjustable shrinkage cavity aperture is in accordance with calculating or test under certain wind speed operating condition and measures
To Resistance Value and the shrinkage cavity position that sets.Change since flow resistance of the wind powder air-flow in pulverized coal channel changes with wind speed
Become, therefore in the practical variable parameter operation of coal pulverizer, wind powder air-flow and design conditions in pulverized coal channel can all have differences, i.e., in fact
Each angle wind speed in border and coal dust are all non-uniform.It is poor all to there is dynamic adjustment performance in fixed or manual adjustable shrinkage cavity, adjustment
The inflexible problem of mode.
The switch of manual adjustable shrinkage cavity generally adjusts blade using the two-piece type of similar scissors switch.As shown in Fig. 2, most
The left side indicates that manual adjustable shrinkage cavity is in small guide vane, and intermediate representation manual adjustable shrinkage cavity is in intermediate aperture, rightmost table
Show manual adjustable shrinkage cavity for big aperture, 1,2 be blade, and 3 be metal shell, and 21 be pulverized coal feed pipe inner wall.Blade center is pre-
Semicircle through-flow mouth is stayed, can guarantee at least 50% same flow area under shrinkage cavity full off state.But this regulative mode is not
Linearly, adjusting is not flexible, has larger impact to breeze airflow flow uniformity, is unfavorable for the detection to coal powder density.
Summary of the invention
The present invention provides a kind of throttle resistance regulating device and pulverized coal preparation system, to realize to pulverized coal preparation system pulverized coal feed pipe system
The dynamic of resistance adjusts, and achievees the purpose that even regulation flow velocity and coal powder density.
To achieve the goals above, the present invention provides a kind of throttle resistance regulating device, the throttle resistance is adjusted
Device includes：Metal shell and the intracorporal multiple adjustable vane baffles of the setting metal-back, a transmission mechanism and a driving
Device；
The metal shell is welded between two sections of pulverized coal feed pipes by two bottom surfaces；The adjustable vane baffle connection
The transmission mechanism, the transmission mechanism connection driving device；Drive of the transmission mechanism in the driving device
Under, drive multiple adjustable vane baffles in the plane perpendicular to the pulverized coal channel at an angle to the coal
The center of circle direction of powder pipeline is opened and closed simultaneously.
In one embodiment, the transmission mechanism includes：
Main shaft connects the transmission mechanism；
Master gear is set on the main shaft, is rotated under the drive of the main shaft；
First pinion, the first pinion outer edge are respectively equipped with the interior gear teeth and external gear teeth, the external gear teeth with
The gear teeth of the master gear are mutually ratcheting；
Multiple counter drive shafts fix an adjustable vane baffle on each counter drive shaft；
Multiple second pinions, each second pinion are respectively sleeved on a counter drive shaft, the interior gear teeth
It is ratcheting with the gear teeth difference of multiple second pinions.
In one embodiment, the side of the metal shell is equipped with sealing air interface, for being passed through sealing air.
In one embodiment, the number of the adjustable vane baffle is at least 3.
In one embodiment, the number of the adjustable vane baffle is 6.
In one embodiment, the adjustable vane baffle is distributed relative to the even circumferential of the pulverized coal channel.
In one embodiment, for the adjustable vane baffle along the circumferencial direction number consecutively, adjacent is adjustable
Blade damper is staggered up and down；In the aperture adjustment for carrying out the adjustable vane baffle, even number adjustable vane baffle with
The movement straggly of odd number adjustable vane baffle realizes that synchronous switch is adjusted.
In one embodiment, the master gear is along rotation counterclockwise, drives first pinion along clockwise motion, into
And driving multiple second pinions along clockwise motion, each adjustable vane baffle also acts therewith.
In one embodiment, odd number adjustable vane baffle is single layer blade baffle, even number adjustable vane baffle
For single layer or with the dual-layered baffle plate in gap.
In one embodiment, even number adjustable vane baffle is single layer blade baffle, odd number adjustable vane baffle
For single layer or with the dual-layered baffle plate in gap.
In one embodiment, driving device is Vidacare corp or pneumatic actuating device.
The present invention is applied to power station boiler pulverizing system, and the pulverized coal preparation system includes：Coal pulverizer is connected to the coal-grinding
The a plurality of pulverized coal channel of machine is arranged in the coal pulverizer outlet portal on every pulverized coal channel and is arranged in every coal pipe
The throttle resistance regulating device on road.
The beneficial effect of the embodiment of the present invention is, by the invention it is possible to according in pulverized coal channel wind speed size or
Coal powder density size accurately adjusts the aperture of adjustable vane baffle at any time, realizes the dynamic to pulverized coal channel system resistance
Adjustment, achievees the purpose that even regulation flow velocity and coal powder density.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is existing pulverized coal preparation system structural schematic diagram；
Fig. 2 manually adjusts shrinkage cavity position of the switch schematic diagram to be existing；
Fig. 3 is the structural schematic diagram of the throttle resistance regulating device of the embodiment of the present invention；
Fig. 4 is the positional relationship and aperture schematic diagram between the adjustable vane baffle of the embodiment of the present invention；
Fig. 5 is the scheme of installation of the single adjustable vane baffle of the embodiment of the present invention；
Fig. 6 is the switch motion schematic diagram of the single adjustable vane baffle of the embodiment of the present invention；
Fig. 7 is the pulverized coal preparation system structural schematic diagram of the embodiment of the present invention, is provided with section on the pulverized coal channel of the pulverized coal preparation system
Flow resistance apparatus for adjusting force 3.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Poor for dynamic adjustment performance existing in the prior art fixed or manual adjustable shrinkage cavity, adjustment mode is not
The a series of problem such as flexibly instead of fixed in Fig. 1 or manually may be used the present invention provides a kind of throttle resistance regulating device
Mode shrinkage cavity 12, describes in detail below.
As shown in figure 3, the embodiment of the invention provides a kind of throttle resistance regulating device, throttle resistance regulating device packet
It includes：Metal shell e and multiple adjustable vane baffle d, a transmission mechanism and a driving device (figure in setting metal shell e
In be not shown).Driving device can be Vidacare corp or pneumatic actuating device, and Vidacare corp can be motor etc.,
Pneumatic actuating device can be pneumatic actuator.
Metal shell e is welded between two sections of pulverized coal feed pipes (inner wall that f is pulverized coal channel) by two bottom surfaces.Adjustable leaf
Piece baffle d connection transmission mechanism, transmission mechanism connect driving device.Transmission mechanism is driven by the driving device, drives multiple
Adjustable vane baffle in plane (plane for being parallel to pulverized coal channel cross section) perpendicular to pulverized coal channel with certain
Angle is opened and closed simultaneously to the center of circle direction of pulverized coal channel.
As shown in figure 3, transmission mechanism includes：Main shaft a, master gear a1, the first pinion c, multiple counter drive shaft b and
Multiple second pinion b1.
Main shaft a is connected to driving device, rotates under the drive of the drive.Master gear a1 is set in main shaft
On a, rotated under the drive of main shaft a.
First pinion c outer edge is respectively equipped with the interior gear teeth 31 and external gear teeth 32, the wheel of external gear teeth 32 and master gear a1
Tooth is mutually ratcheting.
An adjustable vane baffle is fixed on each counter drive shaft b.Every one second pinion b1 is respectively sleeved at one
On counter drive shaft b, the gear teeth difference of the interior gear teeth 31 and multiple second pinion b1 is ratcheting.
The number of adjustable vane baffle d is at least 3.In one embodiment, the number of adjustable vane baffle d is 6
It is a, as shown in figure 4, leftmost expression manual adjustable shrinkage cavity is in small guide vane, at intermediate expression manual adjustable shrinkage cavity
In intermediate aperture, the expression manual adjustable shrinkage cavity of rightmost is for big aperture.At this point, the number of corresponding second pinion b1
It is 6.After transmission mechanism (such as motor) receives the action command for closing blade, driving main shaft a is rotated counterclockwise,
Master gear a1 rotates counterclockwise under the drive of main shaft a, drives the first pinion (also known as big transmission gear) c clockwise
Movement, and it is transferred to 6 the second pinions (also known as six small transmission gears) b1 clockwise motion, the secondary biography for driving it to be arranged
Moving axis b is rotated clockwise.Since each adjustable vane gear d is fixed on corresponding counter drive shaft b, so each adjustable vane is kept off
Plate d is also acted therewith, realizes closing function.
In order to be apparent from the details movement of adjustable vane baffle d, the movement with single adjustable vane baffle d is
Example is illustrated.As shown in figure 5, single adjustable vane baffle d is fixed on a counter drive shaft b, one second secondary tooth
Wheel b1 is set on counter drive shaft b.After transmission mechanism receives the action command for closing blade, driving main shaft a is inverse
Hour hands rotation, master gear a1 rotate counterclockwise under the drive of main shaft a, drive the first pinion (also known as big driving cog
Wheel) c clockwise motion, and the second pinion b1 clockwise motion being transferred in Fig. 5, the counter drive shaft b for driving it to be arranged are suitable
Hour hands rotate, and the adjustable vane baffle d in Fig. 5 is also acted therewith, and adjustable vane baffle d rotary motion trace is as shown in Figure 6.
In the present embodiment, the even circumferential relative to the pulverized coal channel of adjustable vane baffle is distributed.Adjustable leaf
Piece baffle d circumferentially number consecutively (number 1-6), and in 6 adjustable vane baffle d, adjacent two can
It adjusts blade damper d or more to be staggered, as shown in Figure 4.In one embodiment, the adjustable vane baffle d of even number is installed on surprise
Several numbers adjustable vane baffle d lower part (in Fig. 4, the adjustable vane baffle that number is 6 be installed on number be 1 it is adjustable
The lower part of blade damper is saved, the adjustable vane baffle that number is 4 is installed on the lower part for the adjustable vane baffle that number is 5,
The adjustable vane baffle that number is 2 is installed on the lower part for the adjustable vane baffle that number is 3).Carrying out adjustable vane
When the aperture adjustment of baffle d, even number adjustable vane baffle and the movement straggly of odd number adjustable vane baffle are realized and are synchronized
Switch-mode regulation.Small guide vane, four kinds of situations of intermediate aperture and big aperture are shown in Fig. 4.
In groups with odd number or even number, wherein must have one group of baffle is single layer blade baffle, another group optional for multiple-piece baffle
With single layer or the dual-layered baffle plate arrangement form with gap.
In one embodiment, odd number adjustable vane baffle is single layer blade baffle, even number adjustable vane baffle
For single layer or with the dual-layered baffle plate in gap.
In another embodiment, even number adjustable vane baffle is single layer blade baffle, odd number adjustable vane gear
Plate is single layer or the dual-layered baffle plate with gap.
If another group is single layer baffle, then two groups of baffle point upper layer and lower layer are arranged, drive synchronous adjustment by transmission mechanism；Such as
The dual-layered baffle plate arrangement form for having gap is selected, then synchronous adjustment, one group of baffle are driven by transmission mechanism in switching process
Preset clearance among into dual-layered baffle plate, meets freely regulated requirement.
In one embodiment, the side of metal shell e is equipped with sealing air interface g, for being passed through sealing air.The present invention uses
Cold First air or enchashment have sealing air of the sealing air as throttle resistance regulating device, and the wind pressure of sealing air is higher than in pulverized coal channel
Wind powder mixture pressure, block pulverized coal particle enter inside the metal shell of throttle resistance regulating device of the present invention, block leaf
Piece baffle or transmission mechanism, influence the flexibility of mechanism adjusting, or even block blade damper, to can effectively solve traditional shrinkage cavity
Accumulated powder blockage problem promotes the reliability that throttle block apparatus for adjusting force adjusts pulverized coal channel system resistance.
Throttle resistance regulating device of the invention can be used on pulverized coal channel, can be used for other pipelines, such as flue gas
The pipelines such as pipeline are used for draught control.
Throttle resistance regulating device of the invention uses electric/pneumatic control mode, is able to achieve remote operation, meets automatic
Control requires, and improves the control flexibility of drag regulator, is that the dynamic of each angle coal dust speed of combustion process, concentration etc. is accurate
Control creates conditions；
Using multiple-blade baffle forms, each blade synchronization adjustment avoids traditional two-piece type shrinkage cavity (shown in Fig. 1) resistance regulation
Not linear, non-uniform problem, and then improve the throttle resistance regulating device of breeze airflow through the invention in pulverized coal channel
(shrinkage cavity) flow uniformity afterwards is conducive to promote coal powder density, and the representativeness and accuracy of breeze airflow sampling improve wind speed and survey
The accuracy of amount；
There are sealing air of the sealing air as throttle resistance regulating device of the invention, wind pressure using cold First air or enchashment
Higher than the wind powder mixture pressure in pulverized coal channel, (under normal circumstances, wind pressure is mixed by wind powder at drag regulator
2-3 times of object pressure), block pulverized coal particle to enter inside the metal shell of apparatus of the present invention, to can effectively solve traditional contracting
Hole accumulated powder blockage problem, lifting device reliability.
As shown in fig. 7, the present invention provides a kind of pulverized coal preparation system, pulverized coal preparation system includes：Coal pulverizer is connected to the coal pulverizer
A plurality of pulverized coal channel 14 is arranged in the coal pulverizer outlet portal 11 on every pulverized coal channel 14 and is arranged on every pulverized coal channel 14
Throttle resistance regulating device 73.
As shown in figure 3, throttle resistance regulating device 3 includes：It is multiple adjustable in metal shell e and setting metal shell e
Save blade damper d, a transmission mechanism and a driving device (not shown).Driving device can be Vidacare corp or gas
Dynamic driving device, Vidacare corp can be motor etc., and pneumatic actuating device can be pneumatic actuator.
Metal shell e is welded between two sections of pulverized coal feed pipes (inner wall that f is pulverized coal channel) by two bottom surfaces.Adjustable leaf
Piece baffle d connection transmission mechanism, transmission mechanism connect driving device.Transmission mechanism is driven by the driving device, drives multiple
Adjustable vane baffle in plane (plane for being parallel to pulverized coal channel cross section) perpendicular to pulverized coal channel with certain
Angle is opened and closed simultaneously to the center of circle direction of pulverized coal channel.
As shown in figure 3, transmission mechanism includes：Main shaft a, master gear a1, the first pinion c, multiple counter drive shaft b and
Multiple second pinion b1.
Main shaft a is connected to transmission mechanism, rotates under the drive of the transmission mechanism.Master gear a1 is set in main shaft
On a, rotated under the drive of main shaft a.
First pinion c outer edge is respectively equipped with the interior gear teeth 31 and external gear teeth 32, the wheel of external gear teeth 32 and master gear a1
Tooth is mutually ratcheting.
An adjustable vane baffle is fixed on each counter drive shaft b.Every one second pinion b1 is respectively sleeved at one
On counter drive shaft b, the gear teeth difference of the interior gear teeth 31 and multiple second pinion b1 is ratcheting.
The number of adjustable vane baffle d is at least 3.In one embodiment, the number of adjustable vane baffle d is 6
It is a, as shown in figure 4, at this point, the number of corresponding second pinion b1 is also 6.When transmission mechanism (such as motor) receives pass
After closing the action command of blade, driving main shaft a is rotated counterclockwise, and master gear a1 is counterclockwise under the drive of main shaft a
Rotation drives the first pinion (also known as big transmission gear) c clockwise motion, and is transferred to 6 the second pinions (also known as
Six small transmission gears) b1 clockwise motion, the counter drive shaft b for driving it to be arranged rotates clockwise.Due to each adjustable vane
Gear d is fixed on corresponding counter drive shaft b, so each adjustable vane baffle d is also acted therewith, realizes closing function.
In order to be apparent from the details movement of adjustable vane baffle d, the movement with single adjustable vane baffle d is
Example is illustrated.As shown in figure 5, single adjustable vane baffle d is fixed on a counter drive shaft b, one second secondary tooth
Wheel b1 is set on counter drive shaft b.After transmission mechanism receives the action command for closing blade, driving main shaft a is inverse
Hour hands rotation, master gear a1 rotate counterclockwise under the drive of main shaft a, drive the first pinion (also known as big driving cog
Wheel) c clockwise motion, and the second pinion b1 clockwise motion being transferred in Fig. 5, the counter drive shaft b for driving it to be arranged are suitable
Hour hands rotate, and the adjustable vane baffle d in Fig. 5 is also acted therewith, and adjustable vane baffle d rotary motion trace is as shown in Figure 6.
In the present embodiment, the even circumferential relative to the pulverized coal channel of adjustable vane baffle is distributed.Adjustable leaf
Piece baffle d circumferentially number consecutively (number 1-6), and in 6 adjustable vane baffle d, adjacent two can
It adjusts blade damper d or more to be staggered, as shown in Figure 4.In one embodiment, the adjustable vane baffle d of even number is installed on surprise
Several numbers adjustable vane baffle d lower part (in Fig. 4, the adjustable vane baffle that number is 6 be installed on number be 1 it is adjustable
The lower part of blade damper is saved, the adjustable vane baffle that number is 4 is installed on the lower part for the adjustable vane baffle that number is 5,
The adjustable vane baffle that number is 2 is installed on the lower part for the adjustable vane baffle that number is 3).Carrying out adjustable vane
When the aperture adjustment of baffle d, even number adjustable vane baffle and the movement straggly of odd number adjustable vane baffle are realized and are synchronized
Switch-mode regulation.Small guide vane, four kinds of situations of intermediate aperture and big aperture are shown in Fig. 4.
In groups with odd number or even number, wherein must have one group of baffle is single layer blade baffle, another group optional for multiple-piece baffle
With single layer or the dual-layered baffle plate arrangement form with gap.
In one embodiment, odd number adjustable vane baffle is single layer blade baffle, even number adjustable vane baffle
For single layer or with the dual-layered baffle plate in gap.
In another embodiment, even number adjustable vane baffle is single layer blade baffle, odd number adjustable vane gear
Plate is single layer or the dual-layered baffle plate with gap.
If another group is single layer baffle, then two groups of baffle point upper layer and lower layer are arranged, drive synchronous adjustment by transmission mechanism；Such as
The dual-layered baffle plate arrangement form for having gap is selected, then synchronous adjustment, one group of baffle are driven by transmission mechanism in switching process
Preset clearance among into dual-layered baffle plate, meets freely regulated requirement.
In one embodiment, the side of metal shell e is equipped with sealing air interface g, for being passed through sealing air.The present invention uses
Cold First air or enchashment have sealing air of the sealing air as throttle resistance regulating device 3, and the wind pressure of sealing air is higher than pulverized coal channel
Interior wind powder mixture pressure blocks pulverized coal particle to enter inside the metal shell of throttle resistance regulating device 3 of the present invention, blocks
Blade damper or transmission mechanism, influence the flexibility of mechanism adjusting, or even block blade damper, to can effectively solve traditional contracting
Hole accumulated powder blockage problem promotes the reliability that throttle block apparatus for adjusting force 3 adjusts pulverized coal channel system resistance.
Throttle resistance regulating device 3 in pulverized coal preparation system of the invention uses electric/pneumatic control mode, is able to achieve a distant place
Operation, meets requirements for automatic control, improves the control flexibility of drag regulator, is each angle coal dust speed of combustion process, dense
The dynamic of degree etc., which accurately controls, to create conditions；
Throttle resistance regulating device 3 in pulverized coal preparation system of the invention uses multiple-blade baffle forms, each blade synchronization tune
It is whole, avoid that traditional two-piece type shrinkage cavity (shown in Fig. 1) resistance regulation is linear, non-uniform problem, and then improve pulverized coal channel
Flow uniformity after the throttle resistance regulating device 3 of interior breeze airflow through the invention is conducive to promote coal powder density, coal dust gas
The representativeness and accuracy for flowing sampling, improve the accuracy of measuring wind speed；
There is sealing air as the throttle resistance regulating device 3 in pulverized coal preparation system of the invention using cold First air or enchashment
Sealing air, wind pressure is higher than the wind powder mixture pressure in pulverized coal channel, and (under normal circumstances, wind pressure is filled by resistance regulation
2-3 times for setting place's wind powder mixture pressure), block pulverized coal particle to enter inside the metal shell of apparatus of the present invention, so as to have
Effect solves traditional shrinkage cavity accumulated powder blockage problem, lifting device reliability.
It should be understood by those skilled in the art that, the embodiment of the present invention can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the present invention
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the present invention, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
Specific embodiment is applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (10)
1. a kind of throttle resistance regulating device, which is characterized in that the throttle resistance regulating device includes：It metal shell and sets
Set the intracorporal multiple adjustable vane baffles of the metal-back, a transmission mechanism and a driving device；
The metal shell is welded between two sections of pulverized coal feed pipes by two bottom surfaces；Described in the adjustable vane baffle connection
Transmission mechanism, the transmission mechanism connection driving device；The transmission mechanism drives under the drive of the driving device
Multiple adjustable vane baffles are moved in the plane perpendicular to pulverized coal channel at an angle to the pulverized coal channel
Center of circle direction is opened and closed simultaneously；
The side of the metal shell is equipped with the sealing air interface for being passed through sealing air；The number of the adjustable vane baffle
At least 3.
2. throttle resistance regulating device according to claim 1, which is characterized in that the transmission mechanism includes：
Main shaft connects the transmission mechanism；
Master gear is set on the main shaft, is rotated under the drive of the main shaft；
First pinion, the first pinion outer edge are respectively equipped with the interior gear teeth and external gear teeth, the external gear teeth with it is described
The gear teeth of master gear are mutually ratcheting；
Multiple counter drive shafts fix an adjustable vane baffle on each counter drive shaft；
Multiple second pinions, each second pinion are respectively sleeved on a counter drive shaft, the interior gear teeth and more
The gear teeth difference of a second pinion is ratcheting.
3. throttle resistance regulating device according to claim 1, which is characterized in that the number of the adjustable vane baffle
It is 6.
4. throttle resistance regulating device according to claim 1, which is characterized in that the adjustable vane baffle is opposite
It is distributed in the even circumferential of the pulverized coal channel.
5. throttle resistance regulating device according to claim 4, which is characterized in that the adjustable vane baffle is along institute
Circumferencial direction number consecutively is stated, adjacent adjustable vane baffle is staggered up and down；Carrying out opening for the adjustable vane baffle
When degree adjustment, even number adjustable vane baffle and the movement straggly of odd number adjustable vane baffle realize that synchronous switch is adjusted.
6. throttle resistance regulating device according to claim 2, which is characterized in that the master gear is rotated along counterclockwise,
It drives first pinion along clockwise motion, and then drives multiple second pinions along clockwise motion, it is each described
Adjustable vane baffle also acts therewith.
7. throttle resistance regulating device according to claim 5, which is characterized in that odd number adjustable vane baffle is single
Layer blade damper, even number adjustable vane baffle are single layer or the dual-layered baffle plate with gap.
8. throttle resistance regulating device according to claim 5, which is characterized in that even number adjustable vane baffle is single
Layer blade damper, odd number adjustable vane baffle are single layer or the dual-layered baffle plate with gap.
9. throttle resistance regulating device according to claim 1 to 8, which is characterized in that driving device is electronic
Driving device or pneumatic actuating device.
10. a kind of pulverized coal preparation system, which is characterized in that the pulverized coal preparation system includes：Coal pulverizer is connected to the more of the coal pulverizer
Pulverized coal channel, the coal pulverizer outlet portal being arranged on every pulverized coal channel and is arranged on every pulverized coal channel
Throttle resistance regulating device as claimed in any one of claims 1-9 wherein.
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| CN201410706238.6A CN105698205B (en) | 2014-11-28 | 2014-11-28 | Throttle resistance regulating device and pulverized coal preparation system |
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| CN201410706238.6A CN105698205B (en) | 2014-11-28 | 2014-11-28 | Throttle resistance regulating device and pulverized coal preparation system |
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| CN105698205B true CN105698205B (en) | 2018-11-20 |
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| CN107388646A (en) * | 2017-08-10 | 2017-11-24 | 珠海格力电器股份有限公司 | Refrigerant flow regulating mechanism and refrigerating plant |
| CN108332230B (en) * | 2018-04-25 | 2024-03-29 | 国家能源集团科学技术研究院有限公司 | Powder pipe wind powder speed adjusting device |
| CN110715321A (en) * | 2019-09-29 | 2020-01-21 | 中国航发沈阳发动机研究所 | Swirler with adjustable throat area |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822224A (en) * | 2014-03-13 | 2014-05-28 | 青岛立宇科技开发有限公司 | Full automatic coal powder concentration regulator of coal grinder |
| CN103899809A (en) * | 2014-03-05 | 2014-07-02 | 哈尔滨工程大学 | Rotary plate type throttling resistance regulator |
| CN204268502U (en) * | 2014-11-28 | 2015-04-15 | 国家电网公司 | Throttle resistance adjusting device and pulverized coal preparation system |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899809A (en) * | 2014-03-05 | 2014-07-02 | 哈尔滨工程大学 | Rotary plate type throttling resistance regulator |
| CN103822224A (en) * | 2014-03-13 | 2014-05-28 | 青岛立宇科技开发有限公司 | Full automatic coal powder concentration regulator of coal grinder |
| CN204268502U (en) * | 2014-11-28 | 2015-04-15 | 国家电网公司 | Throttle resistance adjusting device and pulverized coal preparation system |
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