CN110000158A - A kind of program-controlled gas phase cabinet dust pelletizing system and control method - Google Patents
A kind of program-controlled gas phase cabinet dust pelletizing system and control method Download PDFInfo
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- CN110000158A CN110000158A CN201910328991.9A CN201910328991A CN110000158A CN 110000158 A CN110000158 A CN 110000158A CN 201910328991 A CN201910328991 A CN 201910328991A CN 110000158 A CN110000158 A CN 110000158A
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- 239000000428 dust Substances 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005453 pelletization Methods 0.000 title claims abstract description 24
- 238000001556 precipitation Methods 0.000 claims abstract description 33
- 238000003860 storage Methods 0.000 claims abstract description 25
- 238000004140 cleaning Methods 0.000 claims abstract description 21
- 238000010926 purge Methods 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 17
- 239000003365 glass fiber Substances 0.000 claims abstract description 17
- 238000005070 sampling Methods 0.000 claims abstract description 7
- 239000000809 air pollutant Substances 0.000 claims description 17
- 231100001243 air pollutant Toxicity 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 16
- 238000009826 distribution Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 claims description 9
- 230000008676 import Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052802 copper Inorganic materials 0.000 claims description 7
- 239000010949 copper Substances 0.000 claims description 7
- 238000004458 analytical method Methods 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
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- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000007774 longterm Effects 0.000 abstract description 3
- 230000035800 maturation Effects 0.000 abstract description 2
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- 230000035508 accumulation Effects 0.000 description 4
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- 238000009413 insulation Methods 0.000 description 3
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- 239000007921 spray Substances 0.000 description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/02—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by distortion, beating, or vibration of the surface to be cleaned
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/048—Monitoring; Safety
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
Abstract
The present invention discloses a kind of program-controlled gas phase cabinet dust pelletizing system and control method, comprising: gas purge system, electric precipitation and vibrated system and dedusting control system；The gas purge system includes air-compressor set, storage cylinder, gas confluence road, and the outlet of air-compressor set and storage cylinder be connected to by control valve and the gas road that converges, and the converge outlet end in road of gas is connected with high-speed flow nozzle and gas is oriented to air curtain；The electric precipitation and vibrated system includes electrode grid, rapping assembly, glass fibre dust filtering grid.This system is adapted to the cleaning of the various cabinets of thermal power plant；Using automation complex control system, the equipment cleaning operation under the long-term continuous working method with interlocking of cabinet is realized in spot sampling, analytical calculation, automatic output control.System structure is simple, technology maturation, failure rate are low, high reliablity, cost and day-to-day operation safeguard that simple expense is low.
Description
Technical field
The present invention relates to electrical equipment, it is related to the electrical equipment clean technologies in thermal power plant, more particularly to a kind of
Program-controlled gas phase cabinet dust pelletizing system and control method.
Background technique
Thermal power plant production process generates a large amount of coal, ash, lime dust, these micron-sized subtle dirt matter can expand
Dissipate the cabinet body for penetrating into all kinds of cabinets in power plant.Under natural gravity effect, or because electrical body has particle
There is adsorptivity, at positions such as bus, insulator, connecting terminals, dust particles pile up formation.Cabinet is all to transport for a long time
Row duty, equipment are in closed state, easily form a large amount of dust accumulations, and but difficulty has reasonable time and measure to be removed.Powder
Dirt accumulation will be such that electrical equipment radiating condition deteriorates, and equipment running temperature increases, and insulation and device aging are accelerated；Coal dust is also
Conductive and flammable characteristic, because coal dust conduction punctures to form electric spark, is just very likely fired once insulation ag(e)ing destroys
It is quick-fried, cause serious consequence and heavy losses.Therefore, often electrical equipment is dusted, equipment cleaning is kept, for transporting safely
Row is highly important.
Thermal power plant electrical equipment cleans at present, is all the manual work during major overhaul is stopped transport.Manual maintenance at
This height, low efficiency, operational reliability is poor, and there is presently no perfect program-controlled gas phase cabinet dust pelletizing systems.
Summary of the invention
Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a kind of program-controlled gas phase cabinets to remove
Dirt system and control method.The system implements the online cleaning work of electrical equipment using program automatic control system, can ensure
Electrical equipment clean and safe reduces hand labor, improves operational reliability.
In order to achieve the above objectives, the present invention is to be achieved through the following technical solutions:
A kind of program-controlled gas phase cabinet dust pelletizing system, comprising: gas purge system, electric precipitation and vibrated system and remove
Dirt control system；
The gas purge system includes air-compressor set, storage cylinder, gas confluence road, and air-compressor set and storage cylinder go out
Mouth pipe is connected to gas confluence road, and the outlet end in gas confluence road is connected with high-speed flow nozzle and gas guiding air curtain；At a high speed
Air current spray nozzle and gas guiding air curtain are used to be arranged in cabinet；
The electric precipitation and vibrated system includes electrode grid, rapping assembly, glass fibre dust filtering grid；Electrode grid, vibration
Beat assembly, glass fibre dust filtering grid is used to be arranged in cabinet；
The dedusting control system includes control bus, dedusting controller, valve control box and electric precipitation and rapping control
Case processed, dedusting controller, valve control box and electric precipitation and rapping control cabinet are electrically connected with control bus, and control bus passes through
Control sub-line is connect with each control valve signal of storage cylinder, air-compressor set and high-speed flow nozzle respectively, valve control box
It is electrically connected with each control valve of gas purge system；Electric precipitation and rapping control cabinet and electrode grid, rapping assembly are electric
Connection.
The outlet conduit of the air-compressor set is connected with the inflow end of the first control valve, the outflow of the first control valve
End is connect with gas confluence road；The outlet nozzle of storage cylinder is connected with the inflow end of the second control valve, the stream of the second control valve
Outlet is connect with gas confluence road；High-speed flow nozzle is connected with the outflow end of third control valve door, the stream of third control valve door
Enter end to connect with gas confluence road.
The electrode grid is arranged in cabinet top outlet inlet；Total three layer arrangement of ingredient of rapping is in cabinet
Quadrangle；Glass fibre dust filtering grid is mounted on the air inlet pipeline and cabinet top outlet inlet of air-compressor set；At a high speed
Air current spray nozzle is arranged in cabinet bottom four corners；Gas guiding air curtain is arranged in cabinet bottom air inlet mouth.
The outlet of the air-compressor set and storage cylinder is copper conductor tube；Gas collecting pipe uses copper conductor tube；Described
Gas confluence assembles safety-valve on road.
The dedusting controller and control bus are arranged in control room；Air-compressor set, storage cylinder, valve control box and
Electric precipitation and rapping control cabinet are arranged in by cabinet.
It further include gas concentration measurement meter and interlocking switch on the spot, gas concentration measurement meter and interlocking switch is arranged on the spot
By cabinet, by control sub-line, interlocking switch signal is connect control bus with gas concentration measurement meter and on the spot.
Angle and pivot angle in adjustment seat, for adjusting is arranged in the high-speed flow nozzle and gas guiding air curtain.
The control method of the program-controlled gas phase cabinet dust pelletizing system, comprising the following steps:
Dedusting controller is controlled according to procedure auto-control air-compressor set, valve control box and electric precipitation and rapping under normality
Case is run, and is implemented continuous or periodic interrupted purging to switchgear and is cleaned: compressed air imports gas confluence road, and system operation adds
Pressure；High pressure gas pushes to guiding air distribution air curtain, generates the jet flow of swing, and cleaning fresh air is sent into constantly into switch cabinet, is opened
It closes in cabinet and establishes micro-positive pressure gas field；Air row of circulation after cabinet top electrode grid, glass fibre dust filtering grid dust separation in cabinet
Out.
It is further comprising the steps of:
It is logical to will test parameter for the air pollutants at gas concentration measurement meter real-time sampling detection device scene and dust concentration
It crosses control bus and is sent to dedusting controller and be compared analysis；
When the air pollutants of device context and dust concentration reach the preset initiation value of control system, or because material passes
When the leakage of sending the process flow having bad luck to be likely to occur polluter and dust, diffusion, dedusting controller will start air compressor machine
Group, valve control box and electric precipitation and rapping control cabinet；Compressed air imports gas confluence road, system operation pressurization；High pressure gas
Body pushes to guiding air distribution air curtain, generates the jet flow of swing, and cleaning fresh air is sent into constantly into switch cabinet；If device context
Air pollutants and dust concentration increase, dedusting controller will increase the power output of air-compressor set, improve wind pressure and air quantity, simultaneously
Start rapping assembly, rapping cabinet body；Until the air pollutants of device context and dust concentration restore normal, dedusting controller tune
Section system restores normal operating conditions.
It is further comprising the steps of:
After longtime running, dust particles are accumulated in switchgear, dedusting controller takes air pulse and vibration
Beat enhancing dust removing effects；
Dedusting controller will start air-compressor set, valve control box, electric precipitation and rapping control cabinet and storage cylinder, and compression is empty
Gas forms pulse shock turbulent flow through high-speed flow nozzle, and rapping assembly rapping cabinet body shakes off dust accretions object, rushes in pulse turbulent flow
It hits down and scatters, as system fresh air stream recycles discharge after cabinet top electrode grid, glass fibre dust filtering grid dust separation.
Compared with prior art, the invention has the following beneficial technical effects:
Program-controlled gas phase cabinet dust pelletizing system of the invention is based on coal dust, coal dust, pulverized limestone in power plant air
The dense actual motion environment of dirt and dust carries out the base of identification analysis to the danger that the electrical equipment in power plant is formed
On plinth, pointedly implement automatic on-line dust suppression, the system is using clean air as medium, after dust filtering, pressurization, generates
The jet flow of swing is sent into cleaning fresh air constantly into switch cabinet, establishes micro-positive pressure gas field in switchgear, prevents the pollution outside cabinet
Substance and dust enter cabinet；Pulse shock turbulent flow can also be formed, cooperates rapping assembly rapping cabinet body, shakes off dust accretions object,
It scatters under the impact of pulse turbulent flow, with system newly distinguished and admirable discharge, plays the effect of cleaning switchgear dust accumulation.Application program is automatic
It controls dust pelletizing system and implements the online cleaning work of electrical equipment, can ensure electrical equipment clean and safe, reduce hand labor, mention
High operational reliability.This system is adapted to the cleaning of the various cabinets of thermal power plant；Using automation complex control system,
Spot sampling, analytical calculation, automatic output control realize that cabinet equipment that is long-term continuous and interlocking under working method is clear
Clean operation.The online cleaning work of electrical equipment is implemented using program automatic control system, can ensure electrical equipment clean and safe,
Hand labor is reduced, operational reliability is improved.
Control method of the invention can may give birth to according to the dust and pollutant concentration at scene, or according to production procedure
At the link of dust pollution object, automatic starting is cleaned, and push fresh air imports gas confluence road and pushes to guiding by high pressure gas
Air distribution air curtain, jet flow to production scene dedusting and dust-proof control.Potent dedusting can also be carried out using high-speed flow nozzle.
Detailed description of the invention
Fig. 1 is the process flow chart of present system；
Fig. 2 is the structural schematic diagram (main view) of present system；
Fig. 3 is the structural schematic diagram (top view) of present system；
In figure: 1, air-compressor set；2, dedusting controller；3, valve control box；4, electric precipitation and rapping control cabinet；5, it controls
Valve；6, high-speed flow nozzle；7, gas is oriented to air curtain；8, safety-valve；9, gas confluence road；10, control bus；11, valve
Gate control line；12, storage cylinder；13, gas concentration measurement meter；14, interlocking switch on the spot；15, electrode grid；16, rapping assembly；
17, glass fibre dust filtering grid.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, described to be explanation of the invention rather than limit
It is fixed.
As shown in Figure 1 to Figure 3, a kind of program-controlled gas phase cabinet dust pelletizing system of the present invention and control method, comprising: gas
Body purge system, electric precipitation and vibrated system and dedusting control system；
The purging control subsystem includes air-compressor set 1, storage cylinder 12, gas confluence road 9, air-compressor set 1 and storage
The outlet of gas cylinder 12 is connected to by control valve with gas confluence road 9, and the outlet end in gas confluence road 9 is connected with high-speed flow
Nozzle 6 and gas are oriented to air curtain 7；High-speed flow nozzle 6 and gas guiding air curtain 7 are arranged in cabinet；
The electric precipitation and vibrated system includes electrode grid 15, rapping assembly 16, glass fibre dust filtering grid 17；Electrode
Grid 15, rapping assembly 16, glass fibre dust filtering grid 17 are arranged in cabinet；
The dedusting control system includes control bus 10, dedusting controller 2, valve control box 3 and electric precipitation and vibration
Control cabinet 4 is made, dedusting controller 2, valve control box 3 and electric precipitation and rapping control cabinet 4 are electrically connected with control bus 10, are controlled
Bus 10 processed is by controlling sub-line each control valve signal with storage cylinder 12, air-compressor set 1 and high-speed flow nozzle 6 respectively
Connection, by control sub-line, 14 signal of interlocking switch is connect control bus 10 with gas concentration measurement meter 13 and on the spot；Valve control
Case 3 processed is electrically connected with each control valve；Electric precipitation and rapping control cabinet 4 are electrically connected with electrode grid 15, rapping assembly 16.
Embodiment
As shown in Figure 1 to Figure 3, a kind of program-controlled gas phase cabinet dust pelletizing system, including air-compressor set 1, dedusting control
Device 2, valve control box 3, electric precipitation and rapping control cabinet 4, control valve 5, high-speed flow nozzle 6, gas are oriented to air curtain 7, peace
Full valve door 8, gas confluence road 9, control bus 10, valve control line 11, storage cylinder 12, gas concentration measurement meter 13 join on the spot
Lock-switch 14, electrode grid 15, rapping assembly 16, glass fibre dust filtering grid 17.
The air outlet of air-compressor set 1 is connected by copper conductor tube with the inflow end of control valve TJF1, control valve TJF1's
Outflow end is connect by copper conductor tube with gas confluence road HLG9.
The outlet nozzle of storage cylinder 12 is connected with the inflow end of control valve TJF2, the outflow end and gas of control valve TJF2
Confluence road 9 connects；High-speed flow nozzle 6 is connected with the outflow end of control valve TJF3, the inflow end of control valve TJF3 and gas
Body confluence road 9 connects.The control valve 5 configures corresponding valve control box 3.
The air-flow terminal of gas confluence road HLG9 is connected to guiding air distribution air curtain 7；Safety valve is assembled on gas confluence road HLG 9
Door AQF.
Rapping assembly 16 includes driving motor, transmission mechanism and flexible insulation rubber rapping hand hammer composition.Transmission mechanism exists
It is of reciprocating vibration that driving motor makes rapping hand hammer do the period under driving, and uniformly taps switch cabinet, and vibration dust accumulation makes it be scattered.Electricity removes
Dirt and rapping control cabinet 4 supply 16 electric energy of rapping assembly, and control operation rhythm, rapping energy.
Gas purge system configures corresponding dedusting controller 2 and control bus 10；Site measuring and control equipment includes: accordingly
Gas concentration measurement meter 13 runs interlocking switch 14 on the spot.System is controlled by computer program, can choose automatic or manual work
Operation mode.Under automatic operation mode, system is started by site measuring and control equipment, and controller is adjusted according to program setting process and parameter
Pressure, flow and the power output of total system equipment are spent, is required with adapting to the cleaning purging of running environment and operator.
Dedusting controller 2 and control bus 10 are arranged in control room.There are heating and ventilation, lighting installation in interior.Air compressor machine
Group 1, storage cylinder 12, valve control box 3, electric precipitation and rapping control cabinet 4, gas concentration measurement meter 13 and interlocking switch 14 on the spot
It is arranged in by cabinet.Cleaning fresh air guiding is sent to live switchgear by gas confluence 9 connection relevant device of road.
Dedusting controller 2 is according to procedure auto-control air-compressor set 1, valve control box 3 and electric precipitation and rapping under normality
Control cabinet 4 is run, and is implemented continuous or periodic interrupted purging to switchgear and is cleaned.First control valve TJF1 is fully open, pressure
Contracting air imports gas confluence road 9, system operation pressurization；High pressure gas pushes to guiding air distribution air curtain 7, generates the spray of swing
Stream is sent into cleaning fresh air constantly into switch cabinet, establishes micro-positive pressure gas field in switchgear, prevent polluter and powder outside cabinet
Dirt enters in cabinet；Air recycles discharge after cabinet top electrode grid 15,17 dust separation of glass fibre dust filtering grid in cabinet.
Dedusting controller 2 can issue signal prompt field operator and pay attention to.
Gas confluence road 9 and connecting tube use copper material, Equipment Foundations load equipment load requirement, firm straight, embedded part ruler
It is very little accurate.
The present invention also provides a kind of control methods of program-controlled gas phase cabinet dust pelletizing system:
The air pollutants at 13 real-time sampling detection device scene of gas concentration measurement meter and dust concentration, will test parameter
Dedusting controller 2, which is sent to, by control bus 10 is compared analysis；
When the air pollutants of device context and dust concentration reach the preset initiation value of control system, or because material passes
When the leakage of sending the process flow having bad luck to be likely to occur polluter and dust, diffusion, dedusting controller 2 will start air compressor machine
Group 1, valve control box 3 and electric precipitation and rapping control cabinet 4；First control valve TJF1 is fully open, and compressed air imports gas
Body confluence road 9, system operation pressurization；High pressure gas pushes to guiding air distribution air curtain 7, the jet flow of swing is generated, constantly to switch
It is sent into cleaning fresh air in cabinet body, establishes micro-positive pressure gas field in switchgear, polluter and dust outside cabinet is prevented to enter in cabinet；Such as
The air pollutants of fruit device context and dust concentration increase, and dedusting controller 2 will increase the power output of air-compressor set 1, improve wind
Pressure and air quantity, while starting rapping assembly 16, rapping cabinet body prevents dust debris from accumulating.Until the air pollution of device context
Object and dust concentration restore normal, and 2 regulating system of dedusting controller restores normal operating conditions.Dedusting controller 2 can issue
Signal prompt field operator pays attention to.
Preferably, process operation state and live dust and contaminant gases concentration parameter are by comprehensive point of dedusting controller 2
Analysis, optimized calculating export optimum control mode, adjust 1 pressure of air-compressor set, control valve aperture regulation clean gas reaches
Optimal wind pressure, flow.
Preferably, the control of dedusting controller 2 guiding air distribution air curtain 7, generates the jet flow of swing, constantly send into switch cabinet
Enter and clean fresh air, micro-positive pressure gas field is established in switchgear, prevents dust access switch cabinet.
Preferably, the electric field strength of 2 coordination electrode grid 15 of dedusting controller, adjusts the ash-removal effect of electric precipitation.
Preferably, dedusting controller 2 controls the rapping intensity and frequency of rapping assembly 16, adjusts the effect of dedusting, and prevent
Only dirt is extremely accumulated.
Preferably, gas confluence road HLG9 configuration safe pressure protects valve AQF, it is ensured that system running pressure is no more than peace
Full guard value.
It is detailed to a kind of working principle progress of program-controlled gas phase cabinet dust pelletizing system provided by the present application below
It illustrates.
The purging cleaning overall process auto-programming monitoring of the various cabinets of thermal power plant is realized using dedusting controller 2,
It is needed, is automatically engaged or out of service according to the air pollutants of device context and dust concentration or process for cleanly preparing interlocking.
Air-compressor set 1, dedusting controller 2, valve control box 3, electric precipitation and 4 normal condition of rapping control cabinet are in electrification
Working condition.The air pressure in gas confluence road 9, storage cylinder 12, the voltage of electrode grid 15 is important system parameter values, is included in and removes
Dirt controller 2 monitors.
13 real-time sampling of gas concentration measurement meter detects air pollutants and the dust concentration of production scene, will test parameter
Dedusting controller 2 is sent to by control bus 10 to be analyzed.When the air pollutants of device context and dust concentration reach control
The initiation value of systemic presupposition processed, dedusting controller 2 will start air-compressor set 1, valve control box 3 and electric precipitation and rapping control cabinet
4；First control valve TJF1 is fully open, and compressed air imports gas confluence road 9, system operation pressurization；High pressure gas push
To guiding air distribution air curtain 7, generate the jet flow of swing, cleaning fresh air be sent into constantly into switch cabinet, establish in switchgear it is micro- just
It calms the anger field, polluter and dust outside cabinet is prevented to enter in cabinet；If air pollutants and the dust concentration liter of device context
Height, dedusting controller 2 will increase the power output of air-compressor set 1, improve wind pressure and air quantity, while starting rapping assembly 16, rapping cabinet
Body prevents dust debris from accumulating.Until the air pollutants of device context and dust concentration restore normal, dedusting controller 2 is adjusted
Section system restores normal operating conditions.Dedusting controller 2 can issue signal prompt field operator and pay attention to.
After longtime running, accumulated dust particles in switchgear, dedusting controller (2) take air pulse and
Rapping enhances dust removing effects.Dedusting controller 2 will start air-compressor set 1, valve control box 3 and electric precipitation and rapping control cabinet 4,
Storage cylinder 12, compressed air form pulse shock turbulent flow through high-speed flow nozzle 6, and 16 rapping cabinet body of rapping assembly shakes off dust
Deposit scatters under the impact of pulse turbulent flow, as system fresh air stream passes through cabinet top electrode grid 15, glass fibre dust filtering grid 17
Discharge is recycled after dust separation.
Dedusting controller 2 is according to the detection data of gas concentration measurement meter 13, and regulating system is contributed and valve opening, control
Clean pressure, the flow of fresh air；Control angle, the pivot angle of gas guiding air curtain 7, the electric field strength and rapping of electrode grid 15
The rapping intensity of assembly 16 and frequency etc., to reach best prevention and control purging cleaning effect.
Gas concentration measurement meter 13 will persistently detect live switchgear air pollutants and dust concentration, when concentration is higher than report
Alert value, immediately in operation main screen alarm, and starting purging program automatically.System purge process persistently makes live switchgear air dirty
After contaminating object and dust concentration decline, control system gradually reduces system power output, until restoring normal operating conditions.
Working status parameter, the switch state etc. of devices in system are all included in the monitoring of dedusting controller 2, when diagnosis has equipment
Failure, switch state exception etc., alarm to operator immediately, prompt maintenance.
The present invention discloses a kind of program-controlled gas phase cabinet dust pelletizing system and control method, based on coal in power plant air
Powder, coal dust, lime dust and coal ash dirt dense actual motion environment, the danger that the electrical equipment in power plant is formed
On the basis of carrying out identification analysis, pointedly implement automatic on-line dust suppression.
This system is adapted to the cleaning of the various cabinets of thermal power plant；Using automation complex control system, scene
Sampling, analytical calculation, automatic output control, the equipment cleaning realizing that cabinet is long-term continuous and interlocking under working method are made
Industry.System structure is simple, technology maturation, failure rate are low, high reliablity, cost and day-to-day operation safeguard that simple expense is low.
The above content is merely illustrative of the invention's technical idea, and this does not limit the scope of protection of the present invention, all to press
According to technical idea proposed by the present invention, any changes made on the basis of the technical scheme each falls within claims of the present invention
Protection scope within.
Claims (10)
1. a kind of program-controlled gas phase cabinet dust pelletizing system characterized by comprising gas purge system, electric precipitation and vibration
Beat system and dedusting control system；
The gas purge system include air-compressor set (1), storage cylinder (12), gas confluence road (9), air-compressor set (1) and
The outlet of storage cylinder (12) is connected to gas confluence road (9), and the outlet end of gas confluence road (9) is connected with high-speed flow nozzle
(6) and gas is oriented to air curtain (7)；High-speed flow nozzle (6) and gas guiding air curtain (7) are used to be arranged in cabinet
It is interior；
The electric precipitation and vibrated system includes electrode grid (15), rapping assembly (16), glass fibre dust filtering grid (17)；Electricity
Pole grid (15), rapping assembly (16), glass fibre dust filtering grid (17) are used to be arranged in cabinet；
The dedusting control system include control bus (10), dedusting controller (2), valve control box (3) and electric precipitation and
Rapping control cabinet (4), dedusting controller (2), valve control box (3) and electric precipitation and rapping control cabinet (4) are and control bus
(10) be electrically connected, control bus (10) by control sub-line respectively with storage cylinder (12), air-compressor set (1) and high-speed flow nozzle
(6) each control valve signal connection, valve control box (3) are electrically connected with each control valve of gas purge system；
Electric precipitation and rapping control cabinet (4) are electrically connected with electrode grid (15), rapping assembly (16).
2. program-controlled gas phase cabinet dust pelletizing system according to claim 1, which is characterized in that the air-compressor set
(1) outlet conduit is connected with the inflow end of the first control valve (TJF1), the outflow end and gas of the first control valve (TJF1)
Body confluence road (9) connection；The outlet nozzle of storage cylinder (12) is connected with the inflow end of the second control valve (TJF2), the second control valve
The outflow end of door (TJF2) is connect with gas confluence road (9)；The outflow of high-speed flow nozzle (6) and third control valve door (TJF3)
End is connected, and the inflow end of third control valve door (TJF3) is connect with gas confluence road (9).
3. program-controlled gas phase cabinet dust pelletizing system according to claim 1, which is characterized in that the electrode grid
(15) it is arranged in cabinet top outlet inlet；Three layer arrangements of rapping assembly (16) point are in the quadrangle of cabinet；Glass
Fiber dust filtering grid (17) is mounted on the air inlet pipeline and cabinet top outlet inlet of air-compressor set (1)；High-speed flow
Nozzle (6) is arranged in cabinet bottom four corners；Gas guiding air curtain (7) is arranged in cabinet bottom air inlet mouth.
4. program-controlled gas phase cabinet dust pelletizing system according to claim 1, which is characterized in that the air-compressor set
(1) and the outlet of storage cylinder (12) is copper conductor tube；Gas collecting pipe (9) uses copper conductor tube；The gas converges road (9)
Upper assembly safety-valve (8).
5. program-controlled gas phase cabinet dust pelletizing system according to claim 1, which is characterized in that the dedusting control
Device (2) and control bus (10) are arranged in control room；Air-compressor set (1), storage cylinder (12), valve control box (3) and electricity remove
Dirt and rapping control cabinet (4) are arranged in by cabinet.
6. program-controlled gas phase cabinet dust pelletizing system according to claim 1, which is characterized in that further include gas concentration
Meter (13) and on the spot interlocking switch (14), gas concentration measurement meter (13) and on the spot interlocking switch (14), which are arranged in, electrically to be opened
It closes by cabinet, by control sub-line and gas concentration measurement meter (13) and on the spot, interlocking switch (14) signal connects control bus (10)
It connects.
7. program-controlled gas phase cabinet dust pelletizing system according to claim 1, which is characterized in that the high-speed flow
Angle and pivot angle in adjustment seat, for adjusting is arranged in nozzle (6) and gas guiding air curtain (7).
8. the control method of program-controlled gas phase cabinet dust pelletizing system, feature described in claim 1-7 any one exist
In, comprising the following steps:
Dedusting controller (2) is according to procedure auto-control air-compressor set (1), valve control box (3) and electric precipitation and vibration under normality
Play control cabinet (4) operation, implement continuous or periodic interrupted purging to switchgear and clean: compressed air imports gas confluence road
(9), system operation pressurization；High pressure gas pushes to guiding air distribution air curtain (7), the jet flow of swing is generated, constantly to switch cabinet
Interior feeding cleans fresh air, establishes micro-positive pressure gas field in switchgear；Air passes through cabinet top electrode grid (15), glass fibre dust filtering in cabinet
Discharge is recycled after grid (17) dust separation.
9. the control method of program-controlled gas phase cabinet dust pelletizing system according to claim 8, which is characterized in that also wrap
Include following steps:
It is logical to will test parameter for the air pollutants at gas concentration measurement meter (13) real-time sampling detection device scene and dust concentration
It crosses control bus (10) and is sent to dedusting controller (2) and be compared analysis；
When the air pollutants of device context and dust concentration reach the preset initiation value of control system, or because material transmission is fallen
When the process flow of fortune is likely to occur the leakage of polluter and dust, diffusion, dedusting controller (2) will start air-compressor set
(1), valve control box (3) and electric precipitation and rapping control cabinet (4)；Compressed air imports gas confluence road (9), and system operation adds
Pressure；High pressure gas pushes to guiding air distribution air curtain (7), generates the jet flow of swing, and cleaning fresh air is sent into constantly into switch cabinet；
If the air pollutants of device context and dust concentration increase, dedusting controller (2) will increase the power output of air-compressor set (1),
Wind pressure and air quantity are improved, while starting rapping assembly (16), rapping cabinet body；Until the air pollutants of device context and dust are dense
Degree restores normal, and dedusting controller (2) regulating system restores normal operating conditions.
10. the control method of program-controlled gas phase cabinet dust pelletizing system according to claim 8, which is characterized in that also
The following steps are included:
After longtime running, dust particles are accumulated in switchgear, dedusting controller (2) takes air pulse and rapping
Enhance dust removing effects；
Dedusting controller (2) will start air-compressor set (1), valve control box (3), electric precipitation and rapping control cabinet (4) and gas storage
Bottle (12), compressed air form pulse shock turbulent flow through high-speed flow nozzle (6), and rapping assembly (16) rapping cabinet body shakes off ash
Dirt deposit scatters under the impact of pulse turbulent flow, as system fresh air stream passes through cabinet top electrode grid (15), glass fibre dirt filtrating screen
Discharge is recycled after lattice (17) dust separation.
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