CN107225038A - Electronic hoist type pebble coal equal pressure discharge device - Google Patents
Electronic hoist type pebble coal equal pressure discharge device Download PDFInfo
- Publication number
- CN107225038A CN107225038A CN201710510507.5A CN201710510507A CN107225038A CN 107225038 A CN107225038 A CN 107225038A CN 201710510507 A CN201710510507 A CN 201710510507A CN 107225038 A CN107225038 A CN 107225038A
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- Prior art keywords
- storehouse
- valve
- box
- gas
- coal
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention provides electronic hoist type pebble coal equal pressure discharge device, the present invention wants means using cylinder as sealed major impetus based on sealing source of the gas, it is ensured that the discharge process of pebble coal is carried out under tight isopiestic state all the time；Designed by using square passage, discharge inclination angle is not less than 40 °, be further ensured that pebble coal is effectively accessible and fall, reach that no concave-convex obstacle discharges pebble coal, with full-bore flow characteristicses；By setting gas sealing mechanism, moved up and down under the driving of biserial cylinder, sealing air is full of in external series gap in sleeve, it is ensured that system operation No leakage；By being provided with the positioner of guide pad on transport box, all in same operating position when making the work of every transport box；The present invention can effectively prevent " flooding " phenomenon of the coal pulverizer caused by pebble coal can not be discharged in time using fully-automatic intelligent control.
Description
Technical field
The present invention is the corollary equipment of power plant coal pulverizer, and in particular to electronic hoist type pebble coal equal pressure discharge device.
Background technology
At present, the pebble coal processing that coal-fired power plant emits to coal pulverizer is generally divided into：It is waterpower, mechanical and artificial defeated
Send three kinds.Artificial conveyance mainly includes stone coal collecting bucket, open type activity stone coal bunker, dump truck three parts.Manually
Induction system is primarily present two problems, and one is site environment pollution, and it is poor that operating worker occupational health is ensured, two be labor intensity
Greatly.Hydraulic transportation pebble coal system water consumption is big, and efficiency is low (20%-40%), and pipeline is easy to wear, and energy consumption is big, debugs running-in period
Long, operation maintenance amount is big, and initial investment is larger, is also unfavorable for the comprehensive utilization of slag.The problem of stone coal collecting bucket is easily blocked up, stone
Leakage around coal collection bucket, which emits problem, cannot also solve.Machinery conveying pebble coal system, maintenance workload is big, and maintenance difficulty
Greatly.Subterranean tunnel domestic demand design dedusting, flushing, drainage, initial investment are big.In addition, most of system also needs arrangement to climb
Conveyer, takes after stove or furnace side position, is made troubles to the integral arrangement after stove and operation.Meanwhile, the discharge of pebble coal is
Through the greatest contamination source as coal pulverizer workshop dust pollution, present discharging modes largely use baffle-box dreg removing system,
Discharge, manually clear on the spot, after operation a period of time, ash gate just occurs that interior leakage leaks phenomenon, while stone coal discharge amount
Increase cause row's gate frequently to open, serious wear is caused seriously to leak out so that barotropic gas in dreg discharging box is carried largely
Dust, has a strong impact on surrounding environment.
The content of the invention
In order to solve problems of the prior art, the invention provides electronic hoist type stone coal equal pressure discharging dress
Put, with reduction coal pulverizer maintenance workload, save the water power energy consumption of auxiliary equipment, the characteristics of mitigating labor strength.
Technical proposal that the invention solves the above-mentioned problems is：Electronic hoist type pebble coal equal pressure discharge device, including guide
Pipe, level-sensing device, water injector, pressure relief device, gas-tight silo, transport box, weighing sensor, DCS control systems；
Passage one end is connected with coal pulverizer outlet, and the other end at the top of transport box with being connected；Passage is provided with transition case,
The both sides up and down of transition case are respectively equipped with once pneumatic shut-off valve, secondary pneumatic shut-off valve；Transport box bottom is connected with gas-tight silo；
Provided with 4 weighing sensor bearings below gas-tight silo, weighing sensor bearing is located on four angles of gas-tight silo bottom surface, biography of weighing
Sensor one end is fixed on weighing sensor bearing, and the other end is connected with gas-tight silo；
Passage is square, and passage is obliquely installed, with horizontal plane angle >=40 °；Temperature is provided with inside passage
Detect warning device and temperature sensor；
Gas-tight silo includes body, bottom plate, gas sealing mechanism, cover plate；Body is connected with bottom plate by gas sealing mechanism, bottom plate
Below body, cover plate is fixed on bottom base plate；The top of gas sealing mechanism and cover plate are connected as a body structure, and bottom is fixed
On bottom plate；Bottom plate squarely, bottom plate is provided with two symmetrical boss, each boss and is respectively equipped with a hanger；
Cover plate is circle, and cover plate is provided with labyrinth seal groove；Body is hollow structure, including upper storehouse, lower storehouse, upper storehouse and lower storehouse phase
Even；Upper storehouse is hollow circular cylinder, upper storehouse and horizontal plane angle >=40 °, central axis and the passage central axis of upper storehouse
Overlap, level-sensing device, water injector are provided with inside upper storehouse；Lower storehouse is to be provided with cylinder saddle and pressure release in the middle part of hollow circular cylinder, lower storehouse
Device, pressure relief device is located above cylinder saddle, and cylinder is fixed on cylinder saddle, and two cylinders are located at the two of lower storehouse respectively
Side, cylinder piston rod is connected with connecting seat, and connecting seat is connected by bearing pin with hanger；Gas sealing mechanism includes inner sleeve, overcoat, interior
Set is hollow circular cylinder with overcoat, and the internal diameter of overcoat is R1, and the internal diameter of inner sleeve is R2, R1>R2, inner sleeve is located in overcoat, interior
The central axis of set aligns with the central axis of overcoat, is connected between inner sleeve and overcoat by telescopic joint；
Transport box is warehouse structure, and transport box includes upper box, lower box, observation window；Upper box is up-small and down-big four
Terrace edge shape, the top surface of upper box is provided with coal-in port, and ring flange is connected by coal-in port with upper box, four sides of upper box
On be equipped with observation window, a suspension ring, suspension ring are located under observation window；Lower box is cubic shaped, and lower box bottom is provided with and led
To block, entry；Upper box bottom surface is connected with lower box top surface；
Weighing sensor, level-sensing device, water injector, once pressure relief device, pneumatic shut-off valve, secondary pneumatic shut-off valve, full
Storehouse warning device, temperature detection warning device, temperature sensor are electrically connected with DCS control systems.
Filled rubber sealing ring in the seal groove.
The wall thickness of the passage is not less than 10mm.
The transport box casing wall thickness is not less than 6mm.
The once pneumatic shut-off valve, the valve plate valve seat of secondary pneumatic shut-off valve use antifriction alloy.
The present invention has beneficial effect：The present invention wants means using cylinder as sealed major impetus based on sealing source of the gas,
The discharge process that ensure that pebble coal is carried out under tight isopiestic state all the time；Designed by using square passage, discharge
Inclination angle is not less than 40 °, is further ensured that pebble coal is effectively accessible and falls, reaches that no concave-convex obstacle discharges pebble coal, with complete
Latus rectum flow characteristicses；By setting gas sealing mechanism, moved up and down under the driving of biserial cylinder, sealing air is full of inside and outside sleeve
In gap, it is ensured that system operation No leakage；By being provided with the positioner of guide pad on transport box, make every transport box work
All in same operating position when making；The present invention can effectively be prevented because pebble coal can not be discharged in time using fully-automatic intelligent control
Two cause " flooding " phenomenon of coal pulverizer.
Brief description of the drawings
Fig. 1 is left view of the present invention.
Fig. 2 is front view of the present invention.
Fig. 3 is the front view of gas-tight silo of the present invention.
Fig. 4 is the left view of gas-tight silo of the present invention.
Fig. 5 is the top view of gas-tight silo of the present invention.
Fig. 6 is the front view of transport box of the present invention.
Fig. 7 is the left view of transport box of the present invention.
Fig. 8 is the top view of transport box of the present invention.
Fig. 9 is the front view of water injector of the present invention.
Figure 10 is the upward view of water injector of the present invention.
Figure 11 is control principle drawing of the invention.
In figure：1- passages, 2- transition casees, 3- once pneumatic shut-off valve, bis- pneumatic shut-off valves of 4-, 5- gas-tight silos, 6-
Transport box, 7- weighing sensors, 8- weighing sensor bearings, 9- flanges, 10- gas-tight silo bodies, 11- cylinders, 12- water spray dresses
Put, 13- level-sensing devices, 14- pressure relief devices, 15- air cylinder bases, 16- connecting seats, 17- bearing pins, 18- bottom plates, 19- overcoats, in 20-
Set, 21- telescopic joints, 22- temperature sensors, 23- temperature detection warning devices, 24- boss, 25- hangers, 26- observation windows, 27-
Storehouse under suspension ring, 29- upper boxes, 30- lower boxes, 31- entries, 32- upper storehouses, 33-, 34-DCS control systems, 35- buys securities with all one's capital alarm
Device, the outlet of 36- coal pulverizers, 37- fixed mounts, 38- gussets, 39- water tanks, 40- discharging devices, 41- atomizers, 42- water outlets
Pipe, 43- magnetic valves, 44- water tank water inlets.
Embodiment
Below in conjunction with the accompanying drawings and embodiment the present invention is further illustrated.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, merely to
Be easy to the description present invention and simplify description, rather than indicate or imply signified device or element must have specific orientation,
With specific azimuth configuration and operation, therefore it is not considered as limiting the invention.In addition, term " first ", " second ",
" the 3rd " is only used for describing purpose, and it is not intended that indicating or implying relative importance.
Electronic hoist type pebble coal equal pressure discharge device, including passage, level-sensing device, water injector, pressure relief device, sealing
Storehouse, transport box, weighing sensor, DCS control systems；
Passage one end is connected with coal pulverizer outlet, and the other end at the top of transport box with being connected；Passage is provided with transition case,
The both sides up and down of transition case are respectively equipped with once pneumatic shut-off valve, secondary pneumatic shut-off valve；Transport box bottom is connected with gas-tight silo；
Provided with 4 weighing sensor bearings below gas-tight silo, weighing sensor bearing is located on four angles of gas-tight silo bottom surface, biography of weighing
Sensor one end is fixed on weighing sensor bearing, and the other end is connected with gas-tight silo；
Passage is square, and passage is obliquely installed, with horizontal plane angle >=40 °；Temperature is provided with inside passage
Detect warning device and temperature sensor；
Gas-tight silo includes body, bottom plate, gas sealing mechanism, cover plate；Body is connected with bottom plate by gas sealing mechanism, bottom plate
Below body, cover plate is fixed on bottom base plate；The top of gas sealing mechanism and cover plate are connected as a body structure, and bottom is fixed
On bottom plate；Bottom plate squarely, bottom plate is provided with two symmetrical boss, each boss and is respectively equipped with a hanger；
Cover plate is circle, and cover plate is provided with labyrinth seal groove；Body is hollow structure, including upper storehouse, lower storehouse, upper storehouse and lower storehouse phase
Even；Upper storehouse is hollow circular cylinder, upper storehouse and horizontal plane angle >=40 °, central axis and the passage central axis of upper storehouse
Overlap, level-sensing device, water injector are provided with inside upper storehouse；Lower storehouse is to be provided with cylinder saddle and pressure release in the middle part of hollow circular cylinder, lower storehouse
Device, pressure relief device is located above cylinder saddle, and cylinder is fixed on cylinder saddle, and two cylinders are located at the two of lower storehouse respectively
Side, cylinder piston rod is connected with connecting seat, and connecting seat is connected by bearing pin with hanger；Gas sealing mechanism includes inner sleeve, overcoat, interior
Set is hollow circular cylinder with overcoat, and the internal diameter of overcoat is R1, and the internal diameter of inner sleeve is R2, R1>R2, inner sleeve is located in overcoat, interior
The central axis of set aligns with the central axis of overcoat, is connected between inner sleeve and overcoat by telescopic joint；
Transport box is warehouse structure, and transport box includes upper box, lower box, observation window；Upper box is up-small and down-big four
Terrace edge shape, the top surface of upper box is provided with coal-in port, and ring flange is connected by coal-in port with upper box, four sides of upper box
On be equipped with observation window, a suspension ring, suspension ring are located under observation window；Lower box is cubic shaped, and lower box bottom is provided with and led
To block, entry；Upper box bottom surface is connected with lower box top surface；
Weighing sensor, level-sensing device, water injector, once pressure relief device, pneumatic shut-off valve, secondary pneumatic shut-off valve, full
Storehouse warning device, temperature detection warning device, temperature sensor are electrically connected with DCS control systems；
Water injector includes fixed mount, gusset, water tank, discharging device；Fixed mount is annular；Water tank is cylinder, water
Upper box part is provided with water inlet, is connected with water source by pipeline, and magnetic valve is located on pipeline, and water tank bottom is provided with 5 groups of delivery ports, 5
Group delivery port is uniformly distributed, and the angle between two adjacent groups delivery port is 72 °, and 1 group of delivery port includes 2 apopores；Water outlet
Device includes being equipped with 4 orifices on 2 outlet pipes, every outlet pipe, and the distance between two neighboring orifice is equal, often
Individual orifice is provided with an atomizer；A discharging device is equipped with every group of delivery port, outlet pipe is connected with apopore；
Provided with 1 gusset between adjacent 2 discharging devices, gusset one end is connected with water tank, and the other end is connected with fixed mount；
Weighing sensor, level-sensing device, water injector, once pressure relief device, pneumatic shut-off valve, secondary pneumatic shut-off valve, full
Storehouse warning device, temperature detection warning device, temperature sensor are electrically connected with DCS control systems.
Filled rubber sealing ring in the seal groove.
The wall thickness of the passage is not less than 10mm.
The transport box casing wall thickness is not less than 6mm.
The once pneumatic shut-off valve, the valve plate valve seat of secondary pneumatic shut-off valve use antifriction alloy.
In use, the hot blast blast of coal pulverizer running status is to ensure that coal pulverizer blows the important measures for penetrating coal dust, in discharge
During pebble coal, being lost in hot-blast pressure absolutely not allows.So, strict guarantee stone coal discharge process hot-blast pressure
It is not lost in, operation normal to coal pulverizer is most important.It is in the means of press seals shape such as strict all the time from coal pulverizer slag-drip opening to transport box
State is carried out.Seal means drive cover plate using cylinder as active force from gas-tight silo both sides, apply uniform power to cover plate, it is ensured that close
The reliability of envelope.In transport box replacement operation, set once pneumatic shut-off valve, secondary pneumatic shut-off valve can be tieed up effectively
Coal pulverizer hot-blast pressure is held without leakage.Once pneumatic shut-off valve and secondary pneumatic shut-off valve, secondary pneumatic shut-off valve is service valve,
When system is normally run, open, just used when need to overhaul once pneumatic shut-off valve all the time.Once pneumatic shut-off valve, secondary pneumatic
When shut-off valve and gas-tight silo both sides cylinder interlocked control, i.e. valve are closed in place, gas-tight silo could pressure release and depressurization, to prevent because
Maloperation causes dust polluting environment.Temperature sensor, temperature detection warning device and water injector interlocked control.
When the accumulation of transport box pebble coal is close to the transport box upper limit, controlling level now is passed to DCS controls by level-sensing device
System, DCS control systems after analysis, send order, close once pneumatic shut-off valve valve and secondary pneumatic shut-off valve valve
Door, the pressure release valve events several seconds, air is discharged into by gas in gas-tight silo, reaches in storehouse that air pressure is consistent in the storehouse outside, realize separation cover plate and
Without flying dust during transport box；Open water injector after pressure release valve events, water injector water spray 20-40s, single injection flow rate about 6-10L,
Then start cylinder up, transport box is disengaged with sealing Hatch Board；Recycle fork truck etc. that transport box is transported into stone in wash-up tray
Sub- coal, transport box after emptying resets, and the cover plate that transport box is navigated to below correct position, gas-tight silo by guide pad is again
Compressed with transport box mating surface, the once pneumatic shut-off valve valve of either on or off and secondary pneumatic shut-off valve valve are back to normal
Emissions status.Hydraulic rotary actuator is installed additional on the pallet fork that rises and falls of fork truck.The hydraulic rotary actuator can be in 0 to 4.5 meter of extent height
360 degree of Omnidirectional rotations topple over pebble coal.
When phenomenon occurs flooding in coal pulverizer, weight signal now can be passed to DCS control systems by weighing sensor,
DCS control systems after analysis, send order, and warning device of buying securities with all one's capital sends alarm, at the same once pneumatic shut-off valve valve with
Secondary pneumatic shut-off valve valve is closed, and the pressure release valve events several seconds, gas in gas-tight silo is discharged into air, reaches in storehouse air pressure outside storehouse
Unanimously, without flying dust when realizing separation cover plate with transport box；Water injector, water injector water spray 20- are opened after pressure release valve events
40s, single injection flow rate about 6-10L, then startup cylinder is up, transport box is disengaged with sealing Hatch Board；Recycle fork truck etc.
Transport box is transported into pebble coal in wash-up tray, the transport box after emptying resets, transport box navigates to correct position by guide pad
Put, the cover plate below gas-tight silo again with transport box mating surface compress, the once pneumatic shut-off valve valve of either on or off with it is secondary
Pneumatic shut-off valve valve, emissions status back to normal.
When temperature is too high in gas-tight silo, temperature signal now can be passed to DCS control systems by temperature sensor,
DCS control systems after analysis, send order, and temperature detection warning device sends alarm, while start water injector, water spray
Device is sprayed water.
To sum up, the present invention can reduce coal pulverizer maintenance workload, save water, the electric energy consumption of auxiliary equipment, improve stone
Coal discharges working environment, greatly reduces the leakage of dust, reduces environmental pollution, mitigates labor strength, improves Automated water
It is flat.
Many other changes and remodeling can be made by not departing from the spirit and scope of the present invention.It should be appreciated that the present invention is not
It is limited to specific embodiment, the scope of the present invention is defined by the following claims.
Claims (5)
1. electronic hoist type pebble coal equal pressure discharge device, it is characterised in that including passage, level-sensing device, water injector, pressure release
Device, gas-tight silo, transport box, weighing sensor, DCS control systems；
Passage one end is connected with coal pulverizer outlet, and the other end at the top of transport box with being connected；Passage is provided with transition case, transition
The both sides up and down of case are respectively equipped with once pneumatic shut-off valve, secondary pneumatic shut-off valve；Transport box bottom is connected with gas-tight silo；Sealing
Provided with 4 weighing sensor bearings below storehouse, weighing sensor bearing is located on four angles of gas-tight silo bottom surface, weighing sensor
One end is fixed on weighing sensor bearing, and the other end is connected with gas-tight silo；
Passage is square, and passage is obliquely installed, with horizontal plane angle >=40 °；Temperature detection is provided with inside passage
Warning device and temperature sensor；
Gas-tight silo includes body, bottom plate, gas sealing mechanism, cover plate；Body is connected with bottom plate by gas sealing mechanism, and bottom plate is located at
Below body, cover plate is fixed on bottom base plate；The top of gas sealing mechanism and cover plate are connected as a body structure, and bottom is fixed on bottom
On plate；Bottom plate squarely, bottom plate is provided with two symmetrical boss, each boss and is respectively equipped with a hanger；Cover plate
For circle, cover plate is provided with labyrinth seal groove；Body is hollow structure, including upper storehouse, lower storehouse, and upper storehouse is connected with lower storehouse；On
Storehouse is hollow circular cylinder, upper storehouse and horizontal plane angle >=40 °, and the central axis of upper storehouse is overlapped with passage central axis,
Level-sensing device, water injector are provided with inside upper storehouse；Lower storehouse is to be provided with cylinder saddle and pressure relief device in the middle part of hollow circular cylinder, lower storehouse,
Pressure relief device is located above cylinder saddle, and cylinder is fixed on cylinder saddle, and two cylinders are located at the both sides in lower storehouse, cylinder respectively
Piston rod is connected with connecting seat, and connecting seat is connected by bearing pin with hanger；Gas sealing mechanism includes inner sleeve, overcoat, inner sleeve with it is outer
Set is hollow circular cylinder, and the internal diameter of overcoat is R1, and the internal diameter of inner sleeve is R2, R1>R2, inner sleeve is located in overcoat, in inner sleeve
Heart axis aligns with the central axis of overcoat, is connected between inner sleeve and overcoat by telescopic joint；
Transport box is warehouse structure, and transport box includes upper box, lower box, observation window；Upper box is up-small and down-big truncated rectangular pyramids
Shape, the top surface of upper box is provided with coal-in port, and ring flange is connected by coal-in port with upper box, equal on four sides of upper box
Provided with observation window, a suspension ring, suspension ring are located under observation window；Lower box is cubic shaped, lower box bottom provided with guide pad,
Entry；Upper box bottom surface is connected with lower box top surface；
Weighing sensor, level-sensing device, water injector, once pressure relief device, pneumatic shut-off valve, secondary pneumatic shut-off valve, report of buying securities with all one's capital
Alarm device, temperature detection warning device, temperature sensor are electrically connected with DCS control systems.
2. electronic hoist type pebble coal equal pressure discharge device as claimed in claim 1, it is characterised in that filled out in the seal groove
Fill rubber seal.
3. electronic hoist type pebble coal equal pressure discharge device as claimed in claim 1, it is characterised in that the wall of the passage
Thickness is not less than 10mm.
4. electronic hoist type pebble coal equal pressure discharge device as claimed in claim 1, it is characterised in that the transhipment box body
Wall thickness is not less than 6mm.
5. electronic hoist type pebble coal equal pressure discharge device as claimed in claim 1, it is characterised in that the once pneumatic pass
Disconnected valve, the valve plate valve seat of secondary pneumatic shut-off valve use antifriction alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710510507.5A CN107225038A (en) | 2017-06-28 | 2017-06-28 | Electronic hoist type pebble coal equal pressure discharge device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710510507.5A CN107225038A (en) | 2017-06-28 | 2017-06-28 | Electronic hoist type pebble coal equal pressure discharge device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107225038A true CN107225038A (en) | 2017-10-03 |
Family
ID=59936358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710510507.5A Withdrawn CN107225038A (en) | 2017-06-28 | 2017-06-28 | Electronic hoist type pebble coal equal pressure discharge device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107225038A (en) |
-
2017
- 2017-06-28 CN CN201710510507.5A patent/CN107225038A/en not_active Withdrawn
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171003 |
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| WW01 | Invention patent application withdrawn after publication |