CN110201462A - A kind of dust explosion protection monitoring alarm applied in deduster - Google Patents
A kind of dust explosion protection monitoring alarm applied in deduster Download PDFInfo
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- CN110201462A CN110201462A CN201910641919.1A CN201910641919A CN110201462A CN 110201462 A CN110201462 A CN 110201462A CN 201910641919 A CN201910641919 A CN 201910641919A CN 110201462 A CN110201462 A CN 110201462A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 142
- 239000000428 dust Substances 0.000 title claims abstract description 59
- 238000004880 explosion Methods 0.000 title claims abstract description 34
- 238000007664 blowing Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000036760 body temperature Effects 0.000 claims description 13
- 238000007599 discharging Methods 0.000 claims description 8
- 238000012905 input function Methods 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 230000002159 abnormal effect Effects 0.000 abstract description 6
- 241001269238 Data Species 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 5
- 230000008054 signal transmission Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000002360 explosive Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000003818 cinder Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005453 pelletization Methods 0.000 description 2
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- 101000969031 Homo sapiens Nuclear protein 1 Proteins 0.000 description 1
- 102100021133 Nuclear protein 1 Human genes 0.000 description 1
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- 238000004220 aggregation Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0091—Including arrangements for environmental or personal protection
- B01D46/0093—Including arrangements for environmental or personal protection against fire or explosion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0084—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours provided with safety means
- B01D46/0095—Means acting upon failure of the filtering system, e.g. in case of damage of the filter elements; Failsafes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/446—Auxiliary equipment or operation thereof controlling filtration by pressure measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/448—Auxiliary equipment or operation thereof controlling filtration by temperature measuring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/44—Auxiliary equipment or operation thereof controlling filtration
- B01D46/46—Auxiliary equipment or operation thereof controlling filtration automatic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B19/00—Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
Abstract
The invention discloses a kind of dust explosion protection monitoring alarms applied in deduster, including body of deduster, main control module, be arranged in the body of deduster and be connected to the main control module dust-removal cloth-bag monitoring modular, operating temperature monitoring modular, gas bag blowing monitoring modular, defeated grey motor monitoring modular, unload grey motor monitoring modular, alarm module, display module, transmission module are connected with by PPI bus on the main control module.The present invention by inlet and outlet pressure difference to deduster, spin manifold temperature, gas bag jetting pressure, defeated grey speed, unload the operation datas such as grey speed and carry out comprehensive real time monitoring; when deduster is abnormal situation, main control module control alarm issues sound-light alarm, takes protection act; it effectively prevent dust explosion in deduster to generate dangerous, safety coefficient height.
Description
Technical field
The present invention relates to technical field of safety protection equipment, relate generally to a kind of dust explosion protection monitoring applied in deduster
Warning device.
Background technique
Deduster to inhibition fugitive dust, improves operating environment cleaning, reduction powder as the most important cleaner of bulk cargo terminals
Dirt exhaust emission has effect of crucial importance, has managed deduster equipment, is effective solution bulk cargo terminals dust pollution, environment guarantor
The important channel of the problems such as shield.
Deduster is also maximum root and the hidden danger place of bulk cargo terminals dust explosion, because the deduster of Grain Trade
Internal a large amount of aggregation combustible dusts, dust concentration is high, there is the danger of dust explosion under the induction of high temperature or spark；And
The inlet outlet pressure differential of deduster is insufficient, gas bag jetting pressure is insufficient, spin manifold temperature is excessively high, defeated grey ash-discharging device is operating abnormally etc.
Belong to dust explosion significant risk source, the safety accident of dust explosion can be induced.
Existing Grain Trade deduster lacks complete set and the protective device of system to monitor the inlet and outlet pressure of deduster
Difference, gas bag jetting pressure, spin manifold temperature, defeated grey ash-discharging device operating condition, can not discover immediately in the preliminary exposure phase of failure,
The serious failure that will cause deeply causes accident, and there are security risks.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind, and comprehensive real-time monitoring, management deduster can be achieved, from
Dynamicization degree is high, the high dust explosion protection monitoring alarm applied in deduster of safety coefficient.
The technical problems to be solved by the invention can adopt the following technical scheme that realize:
A kind of dust explosion protection monitoring alarm applied in deduster, which is characterized in that including body of deduster, master control
Module, be arranged in the body of deduster and be connected to the main control module dust-removal cloth-bag monitoring modular, operating temperature
Monitoring modular, defeated grey motor monitoring modular, unloads grey motor monitoring modular, alarm module at gas bag blowing monitoring modular, in the master
Display module, transmission module are connected with by PPI bus in control module；
The dust-removal cloth-bag monitoring modular includes deduster inlet and outlet pressure difference monitoring unit, the deduster air inlet/outlet
The corresponding electric signal of pressure difference is inputted the main control module by electrical connection by mouth pressure difference monitoring unit；The operating temperature
Monitoring modular includes dust collector box body temperature monitoring unit, and the dust collector box body temperature monitoring unit is by dust collector box body temperature
It is worth corresponding electric signal and the main control module is inputted by electrical connection；The gas bag blowing monitoring modular includes gas bag blowing gas
Monitoring unit is pressed, it is defeated by being electrically connected that the gas bag blowing Pressure monitoring unit will be blown the corresponding electric signal of gas bag atmospheric pressure value
Enter the main control module；The defeated grey motor monitoring modular includes defeated grey motor rotation frequency monitoring unit, the defeated grey motor
Motor rotational shaft speed signal when speed monitoring unit is by defeated grey motor operation inputs the main control module by electrical connection；
It is described unload grey motor monitoring modular include unload grey motor rotation frequency monitoring unit, it is described to unload grey motor rotation frequency monitoring unit
Motor rotational shaft speed signal when unloading grey motor operation is inputted into the main control module by electrical connection；
The display module is the display screen with display with touch-input function, and the display content of the display screen is by institute
It states main control module and passes through PPI bus marco；The alarm module is the alarm with sound and light of alarm, the alarm by
The main control module control；The main control module is the nucleus module of entire explosion-proof monitoring warning device, receives and comes from each letter
The monitoring information of number monitoring modular, and operation, judgement are made, then issue and execute instruction accordingly, complete the remittance of each monitoring data
Always, sound-light alarm and protection act.
In a preferred embodiment of the invention, the monitoring alarm further includes flame proof module, the flame proof mould
Block includes for the protection element spread outside deduster that prevents from exploding, and the protection element is controlled by the main control module, had
There is the function of closing partition deduster air inlet pipeline.
In a preferred embodiment of the invention, the deduster inlet and outlet pressure difference monitoring unit includes for supervising
Survey the differential pressure pickup of the pressure difference between deduster air inlet and air outlet.
In a preferred embodiment of the invention, the dust collector box body temperature monitoring unit includes for monitoring dedusting
The temperature sensor of device case body temperature.
In a preferred embodiment of the invention, the gas bag blowing Pressure monitoring unit includes for monitoring deduster
The baroceptor of gas bag air pressure.
In a preferred embodiment of the invention, the defeated grey motor rotation frequency monitoring unit includes removing for monitoring
The defeated grey frequency sensor of the revolving speed of dirt device ash conveying device motor shaft.
In a preferred embodiment of the invention, described to unload grey motor rotation frequency monitoring unit including removing for monitoring
The revolving speed of dirt device ash-discharging device motor shaft unloads grey frequency sensor.
In a preferred embodiment of the invention, the protection element is the flame proof that deduster air inlet is arranged in
Valve.
In a preferred embodiment of the invention, the main control module is arranged in control cabinet, the main control module packet
Include programmable logic controller (PLC), it is the programmable logic controller (PLC) and differential pressure pickup, temperature sensor, baroceptor, defeated
Grey frequency sensor unloads grey frequency sensor, flame proof valve using electrical connection.
The beneficial effects of the present invention are: a kind of dust explosion protection monitoring alarm applied in deduster, by dedusting
The inlet and outlet pressure difference of device, gas bag jetting pressure, defeated grey speed, unloads the operation datas such as grey speed at spin manifold temperature
Comprehensive real time monitoring is carried out, and inputs main control module and carries out operation, judgement, when main control module monitors deduster abnormal conditions
When control sound-light alarm prompt at the first time, effectively prevent deduster and dust explosion occur, generates dangerous, package unit is safely
Number is high.
Main control module control flame proof valve makes protection act, prevents dust explosion from spreading, further improves safety coefficient；
Using the output of PLC PLC controls abnormal signal, control sound-light alarm, safeguard measure is executed, it is easy for installation, can
By property height, high degree of automation, protection act are fast.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram applied in the dust explosion protection monitoring alarm of deduster of the present invention.
Fig. 2 is a kind of structural block diagram applied in the dust explosion protection monitoring alarm of deduster of the present invention.
Fig. 3 is a kind of operational process schematic diagram applied in the dust explosion protection monitoring alarm of deduster of the present invention.
Fig. 4 is a kind of electric drawings applied in the dust explosion protection monitoring alarm of deduster of the present invention.
Specific embodiment
In order to be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Referring to Fig. 1 to Fig. 3, what is provided in figure is a kind of dust explosion protection monitoring alarm applied in deduster, including
Body of deduster 1, main control module, be arranged in body of deduster and connect with main control module dust-removal cloth-bag monitoring modular,
Operating temperature monitoring modular, defeated grey motor monitoring modular, unloads grey motor monitoring modular, alarm module at gas bag blowing monitoring modular；
Display module, transmission module are connected with by PPI bus on main control module.
Dust-removal cloth-bag monitoring modular includes deduster inlet and outlet pressure difference monitoring unit, deduster inlet and outlet pressure difference
The corresponding electric signal of pressure difference is passed through electrical connection input main control module by monitoring unit；The monitoring of deduster inlet and outlet pressure difference
Unit includes the differential pressure pickup 2 for monitoring the pressure difference between deduster air inlet and air outlet.The type of differential pressure pickup 2
Number it is G3351DP type differential pressure transmitter, the dust accumulation situation of dust-removal cloth-bag can be monitored, the high voltage interface (L) of differential pressure pickup 2 passes through
Rubber hose connects air inlet, low-voltage interface (H) and connects air outlet by rubber hose, by monitoring 11 He of deduster air inlet
Pressure difference between air outlet 22 judges whether the pressure difference of deduster inlet and outlet is normal, obtains dust-removal cloth-bag state indirectly
And whether working condition is normal, while pressure difference information and fault message are sent to main control unit.
The state and working condition of the pressure difference and dust-removal cloth-bag of deduster air inlet 11 and air outlet 12 are closely related, can
For judging whether filter bag of dust collector is in normal operating conditions.Deduster inlet and outlet pressure difference normal range (NR) is 0.2kPa-
1.2kPa illustrates damaged or situations such as fall off there are dust-removal cloth-bag in deduster when inlet and outlet pressure difference is less than 0.2kPa, leads to
The fluid resistance of cloth bag is reduced, and inlet and outlet pressure difference is reduced；When inlet and outlet pressure difference is greater than 1.2kPa, illustrate deduster
Inside existing between dust-removal cloth-bag has situations such as hardened on product Man Fenchen or cloth bag, and air-flow is increased by the fluid resistance of cloth bag, disengaging
Air port pressure difference increases.So when detect inlet outlet pressure differential<0.2kPa or>1.2kPa when, main control module PLC controller 71
Export pressure difference abnormal signal, control alarm 73 issues sound-light alarm, display module display pressure difference failure.
Operating temperature monitoring modular includes dust collector box body temperature monitoring unit, and dust collector box body temperature monitoring unit will remove
The corresponding electric signal of dirt device spin manifold temperature value passes through electrical connection input main control module；Dust collector box body temperature monitoring unit includes
For monitoring the temperature sensor 31 of temperature in dust collector box body, the model of temperature sensor 31 is YCSBWZ-2088, and temperature passes
Sensor 31 is arranged on dust collector box body, and inductive probe protrudes into dust collector box body.
When the temperature in dust collector box body is greater than 70 DEG C, it is possible to deduster be caused to generate explosion.So when temperature passes
When sensor 31 monitors dust collector box body temperature > 70 DEG C, 71 output temperature abnormal signal of main control module PLC controller, generation sound
Light alarm, control duster system is closed, the movement of flame proof valve 321 is closed, and realizes the protection to deduster, the anti-display of display module
Excess temperature failure.
Gas bag blowing monitoring modular includes gas bag blowing Pressure monitoring unit, and gas bag blowing Pressure monitoring unit will be blown gas
The corresponding electric signal of packet atmospheric pressure value passes through electrical connection input main control module；It includes for monitoring that gas bag, which is blown Pressure monitoring unit,
The baroceptor 4 of deduster gas bag air pressure, the model of baroceptor 4 are FST-2088GP pressure transmitter, air pressure sensing
Device 4 is arranged on deduster gas bag 13.
When the pressure of deduster gas bag 13 is less than 0.4MPa, the blowing effect of deduster will be deteriorated.So working as air pressure
When sensor 4 monitors air pressure < 0.4MPa, 71 output pressure abnormal signal of main control module PLC controller, control alarm 73 are sent out
Sound-light alarm out, display module show air pressure failures.
Defeated ash motor monitoring modular includes defeated grey motor rotation frequency monitoring unit, defeated ash motor rotation frequency monitoring unit
Motor rotational shaft speed signal when by defeated grey motor operation passes through electrical connection input main control module；Defeated ash motor rotation frequency monitoring
Unit includes the defeated grey frequency sensor 5 for monitoring the revolving speed of deduster ash conveying device motor shaft, and defeated ash frequency sensor 5 is
Inductance type transducer, defeated ash frequency sensor 5 are arranged on deduster cinder conveyer structure 14.
When defeated grey motor being taken to operate normally, the motor shaft speed of defeated ash motor is benchmark frequency, the electricity of defeated ash motor
The revolving speed of arbor is 41r/min, speed 0.68Hz, the value range 0.55-0.82Hz of normal speed.When defeated ash frequency
When rate sensor 5 monitors that running frequency and reference frequency are not inconsistent, the output operation exception of main control module PLC controller 71 signal,
It controls alarm 73 and issues sound-light alarm, while controlling closing duster system, realize the protection to deduster, display module is aobvious
Show that cinder conveyer structure is operating abnormally.
Unloading grey motor monitoring modular includes unloading grey motor rotation frequency monitoring unit, unloads grey motor rotation frequency monitoring unit
Motor rotational shaft speed signal when unloading grey motor operation is passed through into electrical connection input main control module；Unload grey motor rotation frequency monitoring
Unit includes unloading grey frequency sensor 6 for monitor the revolving speed of deduster ash-discharging device motor shaft, and unloading grey frequency sensor 6 is
Inductance type transducer unloads grey frequency sensor 6 and is arranged on deduster ash discharging mechanism 15.
When unloading ash motor operates normally, the motor shaft rotational frequency of grey motor is unloaded as benchmark frequency, unloads the electricity of grey motor
The revolving speed of arbor is 52r/min, speed 0.87Hz, the value range 0.69-1.04Hz of normal speed.When unloading grey frequency
When rate sensor 6 monitors that running frequency and reference frequency are not inconsistent, the output operation exception of main control module PLC controller 71 signal,
It controls alarm 73 and issues sound-light alarm, while controlling closing duster system, realize the protection to deduster, display module is aobvious
Show that ash discharging mechanism is operating abnormally.
Monitoring alarm further includes flame proof module, explosive substance monitoring modular, flame proof module include for prevent explosion to
The protection element spread outside deduster, protection element are controlled by main control module, with closing partition deduster air inlet pipeline
Function；Protection element is the flame proof valve 321 that deduster air inlet is arranged in, and the model of flame proof valve 321 is SQD- φ, flame proof valve
321 are arranged at deduster air inlet 11, when closing while closing duster system when the temperature is excessively high in dust collector box body
Flame proof valve 321 realizes the protection to deduster；Explosive substance monitoring modular and main control module pass through electrical connection, explosive substance monitoring
Module includes dust concentration monitoring unit and combustable gas concentration monitoring unit, dust concentration monitoring unit and combustable gas concentration
Monitoring unit summarizes the monitoring data of combustibles to main control module PLC controller 71.
Display module, alarm module are arranged on explosion-proof control box 7, and display module is with display and touch-input function
Display screen 72, the display content of display screen 72 passes through PPI bus marco by main control module.
Main control module is arranged inside explosion-proof control box 7, and power supply indicator, reset switch are provided on explosion-proof control box 7,
Main control module is the nucleus module of entire explosion-proof monitoring warning device, receives the monitoring information from each signal monitoring module,
And operation, judgement are made, then issue and execute instruction accordingly, completes the summarizing of each monitoring data, sound-light alarm and protection act.
Main control module is arranged in control cabinet 7, including PLC controller 71 (programmable logic controller (PLC)), and PLC controller 71 and pressure difference pass
Sensor 2, baroceptor 4, defeated grey frequency sensor 5, unloads grey frequency sensor 6, the use of flame proof valve 321 at temperature sensor 31
Electrical connection.
Referring to fig. 4, the control circuit of monitoring alarm has remote control, maintenance, live three kinds of control routes, including sky
Gas circuit breaker Q F, the AC/DC power supply for converting alternating current to direct current, differential pressure pickup U1, temperature sensor U2, air pressure sensing
Device U3, defeated grey frequency sensor U4, grey frequency sensor U5, reset switch SB, relay KA1, relay KA2, relay are unloaded
KA3, relay KA8, PLC controller, flame proof valve 321, display screen 72, combined aural and visual alarm 73.
The zero curve N firewire L of maintenance electronic box 220V power supply is sequentially connected air-break circuit-breaker QF, AC/DC power supply, AC/DC power supply
Positive, the defeated grey frequency of anode and the anode of differential pressure pickup U1, the anode of temperature sensor U2, baroceptor U3 sense
The anode of device U4, the anode for unloading grey frequency sensor U5, the left end of reset switch SB, relay KA8 left end be connected in parallel,
The cathode of AC/DC power supply and the cathode of differential pressure pickup U1, the cathode of temperature sensor U2, baroceptor U3 cathode, defeated
The cathode of grey frequency sensor U4, the cathode for unloading grey frequency sensor U5, PLC controller pin COM1 are connected in parallel；Pressure difference passes
The signal transmission end of sensor U1 is connect with PLC controller pin AI0.0, and the signal transmission end and PLC of temperature sensor U2 controls
The signal transmission end of the AI0.1 connection of device pin, baroceptor U3 is connect with PLC controller pin AI0.2, defeated ash frequency sensing
The signal transmission end of device U4 is connect with PLC controller pin I0.0, and the signal transmission end and PLC for unloading grey frequency sensor U5 control
The right end of the I0.3 connection of device pin, reset switch SB is connect with PLC controller pin I0.1, and the right end and PLC of relay KA8 is controlled
Device pin I0.2 connection processed.
Overhaul the anode of firewire L connection power supply indicator L of electronic box 220V power supply, zero curve N connection power supply indicator L is born
The firewire L of pole, maintenance electronic box 220V power supply is sequentially connected the anode of the anode of relay KA1 normally open contact, combined aural and visual alarm 73,
The cathode of combined aural and visual alarm 73 connects zero curve N；PLC controller pin Q0.4 connection KA1 coil one end, pin Q0.5 connection KA2
Coil one end, pin Q0.6 connection KA3 coil one end, pin PE ground connection, the KA1 coil other end, the KA2 coil other end, KA3 line
Circle other end parallel connection is followed by pin COM2.When pressure difference failure, combined aural and visual alarm starting alarm, so that PLC controller pin Q0.4
Output signal KA1 coil obtains electric；Start flame proof valve so that PLC controller pin Q0.5 output signal KA2 coil obtain it is electric；Dedusting
Device stops working so that PLC controller pin Q0.6 output signal KA3 coil obtain it is electric.KA8 coil both ends are from pulse control instrument
220V alternating current is taken, deduster enabling signal is received, KA8 coil obtains electric；In dust pelletizing system, 321 one end of flame proof valve connects 24V
Direct current anode, 321 other end of flame proof valve are sequentially connected relay KA2 normally open contact one end, 24V direct current cathode；Relay
The control loop of the normally-closed contact access deduster of KA3.
Differential pressure pickup 2, baroceptor 4, defeated grey frequency sensor 5, unloads grey frequency sensor 6 at temperature sensor 31
The running state parameter of deduster is acquired, the IO of signal the output contact and PLC controller 71 of various kinds of sensors
(input/output) point is connected using cable；Wherein air pressure, temperature, pressure difference signal are analog signals, input PLC control
Contact AI (analog input) of device 71, discharge apparatus, ash conveying device motor operating state signal are that digital quantity signal inputs PLC's
The contact DI (digital input).It monitors obtained information and PLC controller 71, PLC controller 71 is transmitted to by transmission module
Analysis on configuration processing is programmed to data, while being shown by explosion-proof display screen 72；To realize auto-alarm function,
PLC controller 71 presets security value (s), and when received measurement data is not within the scope of security value (s), PLC controller 71 is to report
Alert device sends alarm command, and flame proof valve receives the output signal of PLC, the closing when deduster has explosion danger, and alarm issues
Safety alarm helps maintenance personal's quick and precisely fault point, shortens maintenance time, improves investigation failure efficiency, saves people
Power, material resources and time.
According to " dust explosion risk place dust pelletizing system technical specification of security " (AQ4273-2016) and " dust explosion protection
Safety code " (GB15577-2018) requirement, the deduster of Grain Trade needs to increase configuration acoustic-optic alarm.The present invention
National standard is followed strictly, and is reached in conjunction with actual production use experience scene protection device and PLC program is arranged
To the effect of deduster monitoring, alarming.Inlet outlet pressure differential, the gas of dust explosion protection monitoring alarm realization real-time monitoring deduster
The operation datas such as packet jetting pressure, spin manifold temperature, defeated grey ash discharging mechanism operating condition, it is real at the first time when operation data exception
Existing sound-light alarm and protection act, so that failure can be discovered in time in the primary stage and take pretreatment measure, it is ensured that
The dust removing effects of deduster and safe operation.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and together
Equal objects define.
Claims (9)
1. a kind of dust explosion protection monitoring alarm applied in deduster, which is characterized in that including body of deduster, master control mould
Block, be arranged in the body of deduster and be connected to the main control module dust-removal cloth-bag monitoring modular, operating temperature prison
It surveys module, gas bag blowing monitoring modular, defeated grey motor monitoring modular, unload grey motor monitoring modular, alarm module, in the master control
Display module, transmission module are connected with by PPI bus in module；
The dust-removal cloth-bag monitoring modular includes deduster inlet and outlet pressure difference monitoring unit, the deduster inlet and outlet pressure
The corresponding electric signal of pressure difference is inputted the main control module by electrical connection by power difference monitoring unit；The operating temperature monitoring
Module includes dust collector box body temperature monitoring unit, and the dust collector box body temperature monitoring unit is by dust collector box body temperature value pair
The electric signal answered inputs the main control module by electrical connection；The gas bag blowing monitoring modular includes gas bag blowing air pressure prison
Unit is surveyed, the gas bag blowing Pressure monitoring unit will be blown the corresponding electric signal of gas bag atmospheric pressure value and pass through electrical connection input institute
State main control module；The defeated grey motor monitoring modular includes defeated grey motor rotation frequency monitoring unit, the defeated grey motor rotation
Motor rotational shaft speed signal when frequency monitoring unit is by defeated grey motor operation inputs the main control module by electrical connection；It is described
Unloading grey motor monitoring modular includes unloading grey motor rotation frequency monitoring unit, described to unload grey motor rotation frequency monitoring unit and unload
Motor rotational shaft speed signal when grey motor operation inputs the main control module by electrical connection；
The display module is the display screen with display with touch-input function, and the display content of the display screen is by the master
It controls module and passes through PPI bus marco；The alarm module is the alarm with sound and light of alarm, and the alarm is by described
Main control module control；The main control module is the nucleus module of entire explosion-proof monitoring warning device, receives and supervises from each signal
The monitoring information of module is surveyed, and makes operation, judgement, then issues and executes instruction accordingly, completes the summarizing of each monitoring data, sound
Light alarm and protection act.
2. a kind of dust explosion protection monitoring alarm applied in deduster as described in claim 1, which is characterized in that described
Monitoring alarm further includes flame proof module, and the flame proof module includes for the protection member spread outside deduster that prevents from exploding
Part, the protection element are controlled by the main control module, have the function of closing partition deduster air inlet pipeline.
3. a kind of dust explosion protection monitoring alarm applied in deduster as described in claim 1, which is characterized in that described
Deduster inlet and outlet pressure difference monitoring unit includes the pressure for monitoring the pressure difference between deduster air inlet and air outlet
Gap sensor.
4. a kind of dust explosion protection monitoring alarm applied in deduster as described in claim 1, which is characterized in that described
Dust collector box body temperature monitoring unit includes the temperature sensor for monitoring temperature in dust collector box body.
5. a kind of dust explosion protection monitoring alarm applied in deduster as described in claim 1, which is characterized in that described
Gas bag blowing Pressure monitoring unit includes the baroceptor for monitoring deduster gas bag air pressure.
6. a kind of dust explosion protection monitoring alarm applied in deduster as described in claim 1, which is characterized in that described
Defeated ash motor rotation frequency monitoring unit includes the defeated grey frequency sensing for monitoring the revolving speed of deduster ash conveying device motor shaft
Device.
7. a kind of dust explosion protection monitoring alarm applied in deduster as described in claim 1, which is characterized in that described
Unloading grey motor rotation frequency monitoring unit includes sensing for monitoring the grey frequency of unloading of the revolving speed of deduster ash-discharging device motor shaft
Device.
8. a kind of dust explosion protection monitoring alarm applied in deduster as claimed in claim 2, which is characterized in that described
Protection element is the flame proof valve that deduster air inlet is arranged in.
9. such as a kind of described in any item dust explosion protection monitoring alarms applied in deduster of claim 1-8, feature
It is, the main control module is arranged in control cabinet, and the main control module includes programmable logic controller (PLC), and described may be programmed is patrolled
It collects controller and differential pressure pickup, temperature sensor, baroceptor, defeated grey frequency sensor, unload grey frequency sensor, flame proof
Valve is using electrical connection.
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| CN111752208A (en) * | 2020-05-15 | 2020-10-09 | 广东省安全生产技术中心有限公司 | Dust explosion-proof safety monitoring method and system and storage medium |
| CN113599918A (en) * | 2021-08-26 | 2021-11-05 | 广东新氧器净化科技有限公司 | Control method, system, device, equipment and medium for fireproof and explosion-proof dust removal purifier |
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