CN110282461A - Meterage in weighting feeder gives coal motor-driven assistor - Google Patents
Meterage in weighting feeder gives coal motor-driven assistor Download PDFInfo
- Publication number
- CN110282461A CN110282461A CN201910712772.0A CN201910712772A CN110282461A CN 110282461 A CN110282461 A CN 110282461A CN 201910712772 A CN201910712772 A CN 201910712772A CN 110282461 A CN110282461 A CN 110282461A
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- CN
- China
- Prior art keywords
- close
- meterage
- coal
- enforceable shaft
- weighting
- Prior art date
- 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.)
- Granted
Links
- 239000003245 coal Substances 0.000 title claims abstract description 52
- 230000001939 inductive effect Effects 0.000 claims abstract description 11
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 6
- 238000013459 approach Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims 1
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000003818 cinder Substances 0.000 description 7
- 238000005303 weighing Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012857 repacking Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C4/00—Crushing or disintegrating by roller mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
- B65G43/08—Control devices operated by article or material being fed, conveyed or discharged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/14—Pulverising loaded or unloaded materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/02—Control or detection
- B65G2203/0208—Control or detection relating to the transported articles
- B65G2203/0258—Weight of the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
- B65G2203/04—Detection means
- B65G2203/042—Sensors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The present invention relates to a kind of meterage in weighting feeders to give coal motor-driven assistor, the device includes a head tank, the two sides of the side wall top discharge mouth of the head tank are fixed, and there are two bearing block and bearings, Enforceable shaft is provided on two bearing blocks, one end of the Enforceable shaft connects variable-frequency motor with speed reducer by freewheel clutch, circumferentially there are four protrusions close to inductive switching block for right-angled intersection band for the other end of the Enforceable shaft, by being fixed with close to switch bracket close to switch on bearing block, the middle section H of the Enforceable shaft is the symmetrical variable-diameter structure of ecto-entad, ring crush tooth is disposed with along axial ecto-entad on the middle section H of the Enforceable shaft.The present invention overcomes the shortcomings that having showed the meterage in weighting feeder having, and improves the adaptability of meterage in weighting feeder, solves the problems, such as meterage in weighting feeder feed inlet bottom gathering coal blocking.
Description
Technical field
The present invention relates to coal-fired stations to give coal apparatus field, and specifically a kind of meterage in weighting feeder is given
Coal motor-driven assistor.
Background technique:
Meterage in weighting feeder is for coal-fired station's boiler milling system mainly to coal equipment.It can be real
It is now continuous, spare to coal, and carry out accurately weighing during giving coal and calculate, and can be according to boiler combustion control system
It needs, automatically adjusts coal-supplying amount, so that practical coal-supplying amount and boiler load is matched, have become coal-fired station at present
Mainly give coal equipment.
When meterage in weighting feeder works, coal enters feeder by coal feed point from coal store, by metering transportation rubber belt
It is sent to feeder outlet, enters coal pulverizer through coal outlet or is directly entered boiler furnace.It is equipped with below metering transportation rubber belt
The accurate weighing carrier roller of spacing constitutes Weighing span, and one and a pair of of high-precision are equipped among Weighing span
Weighing sensor connection metering carrying roller.When transported coal pass through Weighing span when, weighing sensor just generates and
The directly proportional voltage signal of coal weight on adhesive tape, this signal are given calculation in digital form and are adjusted after amplification and AD transformation
Device, while velocity sensor being installed in the shaft end of main drive motor, the speed of adhesive tape is given in the form of pulse signal and is drilled
Calculate adjuster.The two signals pass through calculus actuator operation, can show the instantaneous coal-supplying amount of meterage in weighting feeder
With accumulative coal-supplying amount, calculus actuator is while calculating coal-supplying amount, by this coal-supplying amount signal and preset coal-supplying amount
Signal compares from the coal-supplying amount signal that boiler combustion control system requires: obtaining motor after being adjusted according to its deviation
The speed that should be run changes the conveying speed of metering transportation rubber belt by changing the revolving speed of main motor, makes practical to coal
Amount is identical as desired coal-supplying amount, to meet the requirement of boiler load.
But existing meterage in weighting feeder does not give coal motor-driven assistor, when coal scuttle has bulk to freeze coal or mistake
When big coal cinder, will cause and blocked in the feed inlet bottom of feeder, influence the normal operation of boiler coal feeding, it is necessary to need by
It could restore feeder normal operation after the artificial coal cinder for removing bite.
Summary of the invention:
The shortcomings that in order to overcome existing meterage in weighting feeder, improves the adaptability of meterage in weighting feeder, solves
The problem of meterage in weighting feeder feed inlet bottom gathering coal blocking, the present invention provides a kind of meterage in weighting feeders to give
Coal motor-driven assistor.
The object of the present invention is achieved like this, and a kind of meterage in weighting feeder gives coal motor-driven assistor, the device
Including a head tank, the axial top of the head tank has a feed inlet, and the radial sidewalls of the head tank have one
A discharge port, the opening direction of the discharge port go out on the side wall of the head tank towards the traffic direction of feeder belt
The two sides of material mouth are fixed there are two bearing block, are provided with bearing on each bearing block, are provided on described two bearing blocks
One end of Enforceable shaft, the Enforceable shaft connects variable-frequency motor, the other end of the Enforceable shaft with speed reducer by freewheel clutch
Circumferentially right-angled intersection band there are four protrusion close to inductive switching block, on the bearing block close proximity to inductive switching block side
One is fixed with close to switch bracket, described to be fixed with close on switch bracket close to switch, the close switch respective protrusions
Close to inductive switching block be arranged；The middle section H (part between two bearings) of the Enforceable shaft is that ecto-entad is symmetrical
Variable-diameter structure, it is broken that diameter ecto-entad along axial ecto-entad is disposed with annular from large to small, on the middle section H
Broken tooth.
It advantages of the present invention and has the technical effect that
1, apparatus of the present invention are mainly mounted in the feed inlet exit of meterage in weighting feeder, when meterage in weighting is given
When being blocked at coal machine inlet by coarse coal, entrance bite can be monitored to coal motor-driven assistor, and automatically process.
2, the present invention is designed to the Enforceable shaft of coal motor-driven assistor by special shape, is had crushing function, is being helped
Under the frictional force effect of the belt of the effect of power axis grinding pressure and former meterage in weighting feeder, the extruding to exceeded coarse coal is completed
With it is broken, good breaking capacity can be had to 1.2 times of raw coal size of coal cinder by being tested the device.
3, the structure of apparatus of the present invention is simple, uses for reference the principle to wheel pulverizer, can be realized to super large coal cinder and freeze block
It is broken, the present apparatus tests successfully in the first power & light company, Ji electricity share Siping City.
4, it also have the advantage that 1. detecting feed pipe bite automatically, and is automatically processed；2. can with give
The disconnected coal signal of coal machine original is connected, high reliability；3. Enforceable shaft passes through optimization design, there is good crushing effect；4. can be certainly
The row setting power-assisted time；5. manually performing device, bite at feed pipe can be handled with human assistance.
Detailed description of the invention
Fig. 1 is overall structure of the present invention.
Fig. 2 is Enforceable shaft A-A sectional view in Fig. 1 of the present invention
Fig. 3 is the top view of Fig. 1 of the present invention.
Fig. 4 is the left view of Fig. 3 of the present invention.
Fig. 5 is the use state of apparatus of the present invention with reference to figure.
Fig. 6 is apparatus of the present invention close to switch control circuit figure.
Fig. 7 is apparatus of the present invention DCS logic judgment figure.
Appended drawing reference: head tank 1, feed inlet 1-1, discharge port 1-2, bearing block 2, bearing 3, Enforceable shaft 4, close switch sense
Answer block 4-1, ring crush tooth 4-2, freewheel clutch 5, speed reducer 6, variable-frequency motor 7, close to switch bracket 8, close to switch 9.
Specific embodiment
As shown in Fig. 1,2,3,4: a kind of meterage in weighting feeder gives coal motor-driven assistor, the device include one into
Charging basket 1, the axial top of the head tank 1 have a feed inlet 1-1, and the radial sidewalls of the head tank 1 go out with one
The opening direction of material mouth 1-2, the discharge port 1-2 towards feeder belt traffic direction, on the side wall of the head tank 1
The two sides of discharge port 1-2 are fixed there are two bearing block 2, are provided with bearing 3, described two bearing blocks 2 on each bearing block 2
On be provided with Enforceable shaft 4, one end of the Enforceable shaft 4 connects variable-frequency motor 7 by freewheel clutch 5 and speed reducer 6, described to help
The other end of power axis 4 circumferentially right-angled intersection band there are four protrusion close to inductive switching block 4-1, close proximity to inductive switching
One is fixed on the bearing block 2 of the side block 4-1 close to switch bracket 8, it is described to be fixed with close on switch bracket 8 close to switch
9, being arranged close to inductive switching block 4-1 close to 9 respective protrusions of switch；Middle section H (two axis of the Enforceable shaft 4
Hold the part between 3) be the symmetrical variable-diameter structure of ecto-entad, diameter ecto-entad from large to small, edge on the middle section H
Axial ecto-entad is disposed with ring crush tooth 4-2.
Working principle:
Give coal motor-driven assistor workflow: coal scuttle → feed inlet → Enforceable shaft → feeder belt → discharge port → mill
Coal machine.
It is as shown in Figure 5: to the position bottom discharge port 1-2 for the feeder head tank 1 that coal motor-driven assistor is mounted on, to give
Coal machine belt is carried the coal that feed inlet 1-1 is fallen and is moved with direction shown in arrow, pushes Enforceable shaft 4 to rotate, when coal cinder is greatly to one
When determining degree, Enforceable shaft 4 is blocked by coal cinder to stop operating, and the pulse signal for indicating main shaft rotation, warp are no longer issued close to switch 9
Control loop linkage interlocked startup variable-frequency motor 7 operates according to set time, and variable-frequency motor 7 passes through speed reducer 6 and overdrive clutch
Device 7 drive Enforceable shaft 4 rotate, by the ring crush tooth 4-2 on Enforceable shaft 4 by after excessive coal crusher in feeder belt
Force action under by discharge port 1-2, reach setting time variable-frequency motor 7 and stop working, freewheel clutch 5 disengages, normally
Coal stream push Enforceable shaft 4 rotation drive Enforceable shaft 4 on four close to inductive switching block 4-1 rotate, with close to switch 9 cooperation
Output pulse signal, control loop, which detects, is placed in standby mode for variable-frequency motor 7 after pulse signal, waits next processing big
The circulation that lump coal blocks.
As shown in Figure 1, 2: the Enforceable shaft 4 is to the core component of coal motor-driven assistor, the material selection of Enforceable shaft 4
The steel alloy or cast carbon steel of high-strength, high-anti-friction are material, and middle section is successively processed along axial ecto-entad on Enforceable shaft 4
There is ring crush tooth 2-1.
The present invention is as shown in Figure 6,7 close to switch control circuit and DCS logic theory:
Alternating current 220V inductance approach switch (exemplary model ties up this Niemann w415kcx) is selected close to switch 9, work
Power supply AC220V is derived from feeder on-site control, and installs intermediate relay 1ZJ (as shown in Figure 6) additional in control cabinet, when helping
When power axis rotates, detect that sensor block 4-1 makes intermediate relay 1ZJ excitation close to switch 9.By relay normally open without source contact
1ZJ1 is sent as power-assisted shaft detection signal to DCS system DI fastener, and logic compiler is as shown in fig. 7, power-assisted repacking when operating normally
Signal frequently closure/disconnection is surveyed, then when (example is set as 7 seconds) detects signal closing or opening always in DCS system XX seconds
Judge that Enforceable shaft has stopped operating, alert, while variable-frequency motor, interlocked startup frequency conversion are outputed signal to by DO card
Motor is crushed coal cinder.After variable-frequency motor starting, by being automatically stopped after logic timing T (s) (example is set as 30 seconds).
Explanation of nouns:
DCS system: DCS is the english abbreviation (Distributed Control System) of dcs,
Domestic automatic control industry is also referred to as Distributed Control System.I.e. so-called dcs, or be referred to as in some data
Distributing system is a kind of novel computer control system for centralized control system, it is in centerized fusion
Develop on the basis of system, be evolved.It is one by process control level and process monitoring level form with communication network
For the multi-level computer system of tie, computer, the 4C technologies such as communication, display and control are combined, basic thought is dispersion
Control, centralized operation, differentiated control, configuration are flexibly and configuration is convenient.DCS is widely used in the centralized control system in power plant.
Variable-frequency motor: frequency control motor abbreviation variable-frequency motor, is the general designation of the motor of transducer drive, and advantage is tool
Have startup function；Using electromagnetic design, reduce the resistance value of stator and rotor；Adapt to the frequent change under different working conditions
Speed；Energy conservation has become the speed-regulating scheme of mainstream at present to a certain extent, can be widely applied to all trades and professions variable speed biography
It is dynamic.(exemplary projects vector frequency converter)
Claims (1)
1. a kind of meterage in weighting feeder gives coal motor-driven assistor, which includes a head tank (1), and feature exists
In: the two sides of the side wall top discharge mouth (1-2) of the head tank (1) are fixed, and there are two bearing block (2), each bearing blocks
(2) it is provided on bearing (3), is provided with Enforceable shaft (4) on described two bearing blocks (2), one end of the Enforceable shaft (4) passes through
Freewheel clutch (5) and speed reducer (6) connection variable-frequency motor (7), the other end of the Enforceable shaft (4) circumferentially right-angled intersection band
There are four protrusions close to inductive switching block (4-1), solid on the bearing block (2) close proximity to the side inductive switching block (4-1)
Surely there is one close to switch bracket (8), described be fixed with close on switch bracket (8) approaches switch (9), described close to switch
(9) respective protrusions close to inductive switching block (4-1) be arranged；The middle section H of the Enforceable shaft (4) is that ecto-entad is symmetrical
Variable-diameter structure, diameter ecto-entad from large to small, are successively set on the middle section H of the Enforceable shaft (4) along axial ecto-entad
It is equipped with ring crush tooth (4-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910712772.0A CN110282461B (en) | 2019-08-02 | 2019-08-02 | Automatic power assisting device for coal feeding of weighing type metering coal feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910712772.0A CN110282461B (en) | 2019-08-02 | 2019-08-02 | Automatic power assisting device for coal feeding of weighing type metering coal feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110282461A true CN110282461A (en) | 2019-09-27 |
| CN110282461B CN110282461B (en) | 2024-09-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910712772.0A Active CN110282461B (en) | 2019-08-02 | 2019-08-02 | Automatic power assisting device for coal feeding of weighing type metering coal feeder |
Country Status (1)
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