CN112506146A - Starting method and system of powder making system - Google Patents
Starting method and system of powder making system Download PDFInfo
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- CN112506146A CN112506146A CN202011243863.3A CN202011243863A CN112506146A CN 112506146 A CN112506146 A CN 112506146A CN 202011243863 A CN202011243863 A CN 202011243863A CN 112506146 A CN112506146 A CN 112506146A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000843 powder Substances 0.000 title claims abstract description 33
- 238000012163 sequencing technique Methods 0.000 claims abstract description 4
- 238000000227 grinding Methods 0.000 claims description 15
- 238000010298 pulverizing process Methods 0.000 claims description 9
- 238000010410 dusting Methods 0.000 claims 1
- 239000003245 coal Substances 0.000 description 17
- 238000007789 sealing Methods 0.000 description 6
- 230000001276 controlling effect Effects 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 5
- 239000010720 hydraulic oil Substances 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 230000003111 delayed effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- 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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
-
- 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
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41845—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by system universality, reconfigurability, modularity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The invention relates to a starting method and a starting system of a powder making system. Acquiring the association relation of each device in a powder process system; determining a plurality of sequence generators according to the incidence relation; sequencing the sequence generators according to the incidence relation; obtaining the permission condition of a priority starting sequence generator and the current state of the priority starting sequence generator; generating an action instruction according to the permission condition and the current state; controlling a corresponding sequence generator to start according to the action instruction; all sequence generators are traversed. The invention improves the reliability of the starting of the powder process system, shortens the starting time of the powder process system and further improves the control efficiency of the powder process system.
Description
Technical Field
The invention relates to the field of powder making system control, in particular to a starting method and a starting system of a powder making system.
Background
The program control objects of the powder process system comprise a coal mill, a coal feeder, a separator, a cold and hot air baffle, a cold and hot air adjusting door, a sealing air door, an outlet primary air door, a lubricating oil pump, a hydraulic oil pump, ignition oil, a fire extinguishing steam electric door and other on-site equipment, a conventional program control logic step sequence adopts a long series connection structure to operate single or similar controlled equipment one by one, the next step operation is carried out after the equipment action is finished, and the finishing criterion is realized by adopting signals such as valve in-place signals, equipment starting operation and the like. Generally, the program control step sequence of the powder making system in the mode reaches 10 steps or more, the whole program control completion time is long, meanwhile, due to the fact that the field environment is complex, especially the environments of vibration, dust and the like of regional equipment of the powder making system are worse, phenomena such as valve jamming are common, the normal operation of the whole program control system can be influenced if any valve cannot be completely in place, and then the starting time of the powder making system is long and the reliability is low.
Disclosure of Invention
The invention aims to provide a starting method and a starting system of a powder making system, which improve the starting reliability of the powder making system, shorten the starting time of the powder making system and further improve the control efficiency of the powder making system.
In order to achieve the purpose, the invention provides the following scheme:
a method of starting a powdering system, comprising:
acquiring the association relation of each device in a powder process system;
determining a plurality of sequence generators according to the incidence relation;
sequencing the sequence generators according to the incidence relation;
obtaining the permission condition of a priority starting sequence generator and the current state of the priority starting sequence generator;
generating an action instruction according to the permission condition and the current state;
controlling a corresponding sequence generator to start according to the action instruction; and replacing the priority starting sequence generator with the next starting sequence generator, and returning to the step of acquiring the permission conditions of the priority starting sequence generator and the current state of the priority starting sequence generator until all the sequence generators traverse.
Optionally, the action instruction is output by the MSDD129 function code.
Optionally, the generating an action instruction according to the permission condition and the current state specifically includes:
judging whether the current state of the priority starting sequence generator meets the corresponding allowable conditions or not;
if yes, generating an action instruction of the priority starting sequence generator;
and if not, replacing the sequence generator started with the priority by the sequence generator started next, and returning to the step of acquiring the permission conditions of the sequence generator started with the priority and the current state of the sequence generator started with the priority.
Optionally, the controlling, according to the action instruction, the corresponding sequence generator to start includes:
and driving 124 the functional block to output a jump number and a jump trigger pulse according to the action command to control the corresponding sequence generator to start.
A start-up system for a powdering system comprising:
the incidence relation acquisition module is used for acquiring the incidence relation of each device in the powder process system;
the sequence generator determining module is used for determining a plurality of sequence generators according to the incidence relation;
the sequence generator sorting module is used for sorting the sequence generators according to the incidence relation;
the system comprises an allowing condition and current state obtaining module, a starting priority module and a starting priority module, wherein the allowing condition and current state obtaining module is used for obtaining the allowing condition of a priority starting sequence generator and the current state of the priority starting sequence generator;
the action instruction generating module is used for generating an action instruction according to the permission condition and the current state;
the sequence generator starting module is used for controlling the corresponding sequence generator to start according to the action instruction; and replacing the priority starting sequence generator with the next starting sequence generator, and returning to the step of acquiring the permission conditions of the priority starting sequence generator and the current state of the priority starting sequence generator until all the sequence generators traverse.
Optionally, the action instruction is output by the MSDD129 function code.
Optionally, the action instruction generating module specifically includes:
the judging unit is used for judging whether the current state of the priority starting sequence generator meets the corresponding permission condition or not;
an action instruction generating unit, configured to generate an action instruction of the priority generator to be started if the priority is satisfied;
and the skipping unit is used for replacing the sequence generator started preferentially with the sequence generator started next if the sequence generator is not met, and returning to the step of acquiring the permission condition of the sequence generator started preferentially and the current state of the sequence generator started preferentially.
Optionally, the sequence generator starting module specifically includes:
and the sequence generator starting unit is used for driving 124 the functional block to output a jump step number and a jump step trigger pulse according to the action instruction to control the corresponding sequence generator to start.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the starting method and the starting system of the powder making system, all equipment is divided into a plurality of sequence generators by utilizing the incidence relation of the equipment in the powder making system, namely, one sequence generator is a plurality of equipment with large relevance, and action instructions are generated according to the states and the allowable conditions of all the equipment in one sequence generator; all devices in one sequence generator are synchronously controlled according to the action instructions, and therefore the control time is reduced. And all the devices in one sequence generator are controlled in parallel, so that the devices in the sequence generator are not influenced, the starting reliability of the powder making system is improved, and the control efficiency of the powder making system is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic flow chart of a method for starting a pulverizing system according to the present invention;
fig. 2 is a schematic structural diagram of a starting system of the powdering system according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a starting method and a starting system of a powder making system, which improve the starting reliability of the powder making system, shorten the starting time of the powder making system and further improve the control efficiency of the powder making system.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic flow chart of a starting method of a pulverizing system provided by the present invention, and as shown in fig. 1, the starting method of the pulverizing system provided by the present invention includes:
s101, acquiring the association relation of each device in the powder process system. The powder process system is based on an ABB control system, a program-controlled starting logic is set up, and the execution of a sequence generator block is controlled by selecting the execution sequence of steps in the process according to the system input and the external input based on 124 function codes and 161 function codes. And realizing the program-controlled start-stop operation of the field function group equipment.
And S102, determining a plurality of sequence generators according to the incidence relation.
S103, sequencing the sequence generators according to the incidence relation.
S104, obtaining the permission condition of the priority starting sequence generator and the current state of the priority starting sequence generator.
S105, generating an action instruction according to the permission condition and the current state; the action instruction is output by the MSDD129 function code.
S105 specifically comprises the following steps:
and judging whether the current state of the priority starting sequence generator meets the corresponding allowable conditions or not.
And if so, generating an action instruction of the priority starting sequence generator.
And if not, replacing the sequence generator started with the priority by the sequence generator started next, and returning to the step of acquiring the permission conditions of the sequence generator started with the priority and the current state of the sequence generator started with the priority.
S106, controlling the corresponding sequence generator to start according to the action instruction; and replacing the priority starting sequence generator with the next starting sequence generator, and returning to the step of acquiring the permission conditions of the priority starting sequence generator and the current state of the priority starting sequence generator until all the sequence generators traverse.
S106 specifically comprises:
and driving 124 the functional block to output a jump number and a jump trigger pulse according to the action command to control the corresponding sequence generator to start.
Further, the step execution completion feedback 124 is to output the next skip step number and the skip trigger according to the predetermined step sequence, and when the program interruption needs to be stopped, the step execution completion feedback is also restored to the initial state through the 124 function block. The output of the program control step sequence is realized by a 161 functional block, the 161 functional block executes a mask defined in the functional block according to the step skipping number and the step skipping trigger pulse output by the 124 functional block and the processing sequence of resetting, shielding, skipping, step keeping, next step and timer keeping, and finally outputs an instruction to drive the functional group device to start and stop.
As a specific embodiment, the pulverizing system is divided into four sequence generators, and the specific start control is as follows:
first sequence generator
Permission conditions (programmed start permission conditions): coal seam is not operated, the primary air door of the coal mill outlet is more than or equal to 5 full openings (6 powder pipes corresponding to 6 primary air doors are designed at the outlet of each coal mill)
And (3) action instructions: opening a cold air shutoff valve, starting a lubricating oil pump, starting a hydraulic oil pump, placing a sealing air door with 65% of instructions (which can be modified online), and reserving an automatic sealing air input closed-loop adjusting means (usually manual control).
Second sequence generator
The allowable conditions are as follows: the ignition energy of the coal mill is met, the differential pressure high switching value signal of sealing air and primary air is met (2 is taken as 3), and the starting permission condition of the separator is met.
And (3) action instructions: opening a hot air shutoff door, starting a separator (the instruction can be automatically set to 50% after the separator is started, wherein the instruction can be modified online), setting a cold air adjusting door instruction to 50%, setting a speed to 1.5%/S (the instruction and the speed can be modified online), setting a hot air adjusting door instruction with a delay of 20 seconds to 50%, and setting a speed to 1%/S (the delay, the instruction and the speed can be modified online).
Third sequence generator
The allowable conditions are as follows: the conditions of the grinding lubricating oil are met (the temperature of a lubricating oil pump of the coal mill is operated, the input bearing of a speed reducer of a grinding lubricating station is lower than 70 ℃, the pressure before a lubricating oil distributor is higher than 0.14MPa, 4 oil temperature measuring points of a thrust bearing oil groove are selected for a short time and are between 10 ℃ and 120 ℃), the conditions of the grinding hydraulic oil are met (a loading motor of a grinding hydraulic station is started), the primary air pressure of a grinding inlet is higher than 1.5KPa (a fixed value can be modified on line), the primary air speed of a grinding outlet is higher than 18m/s (the fixed value can be modified on line), the operation of a grinding separator is fed back, and the starting permission conditions.
And (3) action instructions: the coal mill and the coal feeder are started with the minimum command of 25 percent, and the fire extinguishing steam electric door is opened (the time delay time can be modified on line after the opening command is sent out for 90 seconds in a program control state or after the opening command is fed back to the position to delay the automatic closing for 10 seconds, wherein the time from the full closing to the full opening of the local valve is about 50 seconds);
fourth sequence generator
The allowable conditions are as follows: and (3) delaying the operation feedback of the coal mill for 5 seconds (the delay can be modified on line), and meeting the coal feeder starting permission condition.
And (3) action instructions: and starting the coal feeder.
The start is complete.
The control of the pulverizing system of the invention belongs to the control of a flattened series-parallel structure program. The method includes the steps of sending a step instruction, receiving the step instruction, sending a previous step instruction, and sending a logic design permission condition to a controller, wherein the previous step instruction is prevented from being not completed after the step instruction is sent, although the logic design permission condition is relaxed, the stringency is also fully considered, for example, a target instruction of opening of a cold and hot air damper is obtained by a test that a margin is left under the condition that the air pressure and the air speed are met, the cold and hot air dampers are required to be opened to 50% in a normal condition, if the valve is opened to 40% only, the coal mill starting permission condition is met, the second step is ended, the third step is started, and if the instruction of the second. At the moment, the cold and hot air regulating valve can be controlled by long pulse when the instruction is sent out in the second step, and the required instruction pulse time is calculated by time delay and speed. Ensuring that the action of the step meets the requirements. The fire extinguishing steam electric door can also be subjected to similar problems by opening, when the fire extinguishing steam electric door is opened, the fire extinguishing steam electric door is delayed for 10 seconds or delayed for 90 seconds and automatically closed after an opening command is sent out, in order to ensure that the closing command can be normally sent out, firstly, the situation that the electric door can be normally closed in place within 90 seconds is confirmed, or the waiting time of MSDD is less than 90 seconds, the door closing command can be sent out, even if the waiting time of the MSDD functional block within 60 seconds is finished under the condition of electric door failure, the command can be sent out after the time delay of 90 seconds, if the waiting time of the MSDD of the valve is set to exceed 90 seconds, the logic still judges the internal opening state of the waiting time of.
The program control allowing conditions are designed in the program control logic, besides, each device also has the starting allowing conditions and tripping conditions, attention is paid that the starting allowing conditions and the tripping conditions cannot conflict with each other, the logic is ensured to be smooth and not to be limited, for example, the separator starting allowing conditions are required before the separator is started in the second step, and whether the separator starting allowing conditions can be met after the first step is carried out is checked, if the separator is started and allowed to be opened by the original logic design, a cold air shut-off valve and a sealing air door are required to be completed in the first step before the separator is started, and the cold air shut-off valve and the sealing air door cannot be completed in the second step or later; and similarly, increasing total conditions of coal mill starting permission in the third step and increasing total conditions of coal feeder starting permission in the 4 th step, wherein the conditions of hot air stop valve in-place signals are designed for the coal feeder starting permission conditions of the originally designed coal mill, and the conditions of the stop valve in-place signals in the original starting permission conditions are shielded under the program control state but judged according to the air pressure and air speed conditions in the program control operation permission conditions by considering the smooth and rapid starting of the program control step.
Fig. 2 is a schematic structural diagram of a starting system of a pulverizing system provided by the present invention, and as shown in fig. 2, the starting system of the pulverizing system provided by the present invention includes: an association relation obtaining module 201, a sequence generator determining module 202, a sequence generator sorting module 203, an allowing condition and current state obtaining module 204, an action instruction generating module 205 and a sequence generator starting module 206.
The association relation obtaining module 201 is configured to obtain an association relation between each device in the powder process system.
The sequence generator determining module 202 is configured to determine a plurality of sequence generators according to the association relationship.
The sequence generator sorting module 203 is configured to sort the sequence generators according to the association relationship.
The permission condition and current state obtaining module 204 is configured to obtain a permission condition of a priority-started sequencer and a current state of the priority-started sequencer.
The action command generating module 205 is configured to generate an action command according to the permission condition and the current state.
The sequence generator starting module 206 is used for controlling the corresponding sequence generator to start according to the action instruction; and replacing the priority starting sequence generator with the next starting sequence generator, and returning to the step of acquiring the permission conditions of the priority starting sequence generator and the current state of the priority starting sequence generator until all the sequence generators traverse.
The action instruction is output by the MSDD129 function code.
The action instruction generating module 205 specifically includes: the device comprises a judging unit, an action instruction generating unit and a skipping unit.
The judging unit is used for judging whether the current state of the priority starting sequence generator meets the corresponding allowing condition or not.
And the action command generating unit is used for generating the action command of the priority starting sequence generator if the priority starting sequence is met.
And the skipping unit is used for replacing the sequence generator started preferentially with the sequence generator started next if the sequence generator is not met, and returning to the step of acquiring the permission condition of the sequence generator started preferentially and the current state of the sequence generator started preferentially.
The sequence generator starting module 206 specifically includes: the sequencer activation unit.
And the sequence generator starting unit is used for driving 124 the functional block to output a jump step number and a jump step trigger pulse according to the action instruction to control the corresponding sequence generator to start.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A method of starting a powdering system, comprising:
acquiring the association relation of each device in a powder process system;
determining a plurality of sequence generators according to the incidence relation;
sequencing the sequence generators according to the incidence relation;
obtaining the permission condition of a priority starting sequence generator and the current state of the priority starting sequence generator;
generating an action instruction according to the permission condition and the current state;
controlling a corresponding sequence generator to start according to the action instruction; and replacing the priority starting sequence generator with the next starting sequence generator, and returning to the step of acquiring the permission conditions of the priority starting sequence generator and the current state of the priority starting sequence generator until all the sequence generators traverse.
2. A method of starting a powdering system according to claim 1, wherein said action instruction is outputted by MSDD129 function code.
3. The method for starting a pulverizing system according to claim 1, wherein the generating an action instruction according to the permission condition and the current state specifically includes:
judging whether the current state of the priority starting sequence generator meets the corresponding allowable conditions or not;
if yes, generating an action instruction of the priority starting sequence generator;
and if not, replacing the sequence generator started with the priority by the sequence generator started next, and returning to the step of acquiring the permission conditions of the sequence generator started with the priority and the current state of the sequence generator started with the priority.
4. The method for starting a powdering system according to claim 1, wherein the controlling the corresponding sequencer to start according to the action command specifically comprises:
and driving 124 the functional block to output a jump number and a jump trigger pulse according to the action command to control the corresponding sequence generator to start.
5. A system for starting a powdering system, comprising:
the incidence relation acquisition module is used for acquiring the incidence relation of each device in the powder process system;
the sequence generator determining module is used for determining a plurality of sequence generators according to the incidence relation;
the sequence generator sorting module is used for sorting the sequence generators according to the incidence relation;
the system comprises an allowing condition and current state obtaining module, a starting priority module and a starting priority module, wherein the allowing condition and current state obtaining module is used for obtaining the allowing condition of a priority starting sequence generator and the current state of the priority starting sequence generator;
the action instruction generating module is used for generating an action instruction according to the permission condition and the current state;
the sequence generator starting module is used for controlling the corresponding sequence generator to start according to the action instruction; and replacing the priority starting sequence generator with the next starting sequence generator, and returning to the step of acquiring the permission conditions of the priority starting sequence generator and the current state of the priority starting sequence generator until all the sequence generators traverse.
6. A dusting system start system according to claim 5 whereby the action instructions are output by MSDD129 function code.
7. The system for starting a powdering system according to claim 5, wherein the action instruction generating module specifically comprises:
the judging unit is used for judging whether the current state of the priority starting sequence generator meets the corresponding permission condition or not;
an action instruction generating unit, configured to generate an action instruction of the priority generator to be started if the priority is satisfied;
and the skipping unit is used for replacing the sequence generator started preferentially with the sequence generator started next if the sequence generator is not met, and returning to the step of acquiring the permission condition of the sequence generator started preferentially and the current state of the sequence generator started preferentially.
8. The method for starting a pulverizing system according to claim 5, wherein the sequencer starting module specifically comprises:
and the sequence generator starting unit is used for driving 124 the functional block to output a jump step number and a jump step trigger pulse according to the action instruction to control the corresponding sequence generator to start.
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