CN106774134B - Coke oven ascending pipe cleaning interlocking control method and system - Google Patents
Coke oven ascending pipe cleaning interlocking control method and system Download PDFInfo
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- CN106774134B CN106774134B CN201710026366.XA CN201710026366A CN106774134B CN 106774134 B CN106774134 B CN 106774134B CN 201710026366 A CN201710026366 A CN 201710026366A CN 106774134 B CN106774134 B CN 106774134B
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- 239000000571 coke Substances 0.000 title claims abstract description 202
- 230000001174 ascending effect Effects 0.000 title claims abstract description 132
- 238000004140 cleaning Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000003245 coal Substances 0.000 claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 48
- 238000003763 carbonization Methods 0.000 claims abstract description 24
- 239000002360 explosive Substances 0.000 claims description 17
- 238000012544 monitoring process Methods 0.000 claims description 17
- 238000010926 purge Methods 0.000 claims description 17
- 238000004891 communication Methods 0.000 claims description 14
- 230000001960 triggered effect Effects 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000002955 isolation Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 7
- 238000013500 data storage Methods 0.000 claims description 6
- 230000000630 rising effect Effects 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 238000004939 coking Methods 0.000 abstract description 24
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910002804 graphite Inorganic materials 0.000 abstract description 4
- 239000010439 graphite Substances 0.000 abstract description 4
- 239000002918 waste heat Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 40
- 230000006872 improvement Effects 0.000 description 7
- 238000013459 approach Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000007726 management method Methods 0.000 description 4
- 230000003137 locomotive effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000003034 coal gas Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001976 improved effect Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000035939 shock 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
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B27/00—Arrangements for withdrawal of the distillation gases
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B41/00—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke
- C10B41/08—Safety devices, e.g. signalling or controlling devices for use in the discharge of coke for the withdrawal of the distillation gases
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B43/00—Preventing or removing incrustations
- C10B43/02—Removing incrustations
- C10B43/04—Removing incrustations by mechanical means
- C10B43/06—Removing incrustations by mechanical means from conduits, valves or the like
-
- 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
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1187—Test input value with stored limits, permissable range, plausibility
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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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a coke oven ascending pipe cleaning interlocking control system and method, and belongs to the technical field of waste heat utilization. The coke oven ascending pipe cleaning interlocking control method comprises the steps of identifying opening and closing of an ascending pipe cover, identifying opening and closing of a water seal valve connected with the ascending pipe, identifying opening of a coal charging hole cover, matching an ascending pipe address corresponding to a sensor, and identifying that coke in a carbonization chamber corresponding to the ascending pipe is in the final coking stage. The cleaning interlocking control system for the ascending pipe of the coke oven prevents the inner wall of the ascending pipe from generating high temperature for a long time in the later stage of coking and cleaning graphite, prolongs the service life of the ascending pipe heat exchanger, and saves labor force by periodically cleaning the graphite of the ascending pipe.
Description
Technical Field
The invention belongs to the technical field of waste heat utilization, and particularly relates to a coke oven ascending pipe cleaning interlocking control method and system.
Background
The ascending pipe is arranged on the ascending pipe hole at the top of the coke oven and is communicated with the rectangular carbonization chamber at the bottom, a plurality of coal charging holes and the ascending pipe hole are distributed on the same straight line, the coal charging holes are positioned at the top of the carbonization chamber, when the carbonization chamber heats and retorts matched coal, the coal charging holes are sealed by a furnace cover, the ascending pipe cover is arranged at the upper end of the ascending pipe to prevent the coke oven gas which is retorted in the carbonization chamber from diffusing, the side surface of the ascending pipe is communicated with a bridge pipe, the bridge pipe is arranged on a water seal seat of a gas collecting pipe, after a water seal valve is opened, the carbonization chamber is communicated with the gas collecting pipe, and coke oven crude gas is guided into the gas collecting pipe through the ascending pipe. The coke oven raw gas is easy to crack and coke at high temperature to generate graphite, the graphite is attached to the inner surface of an ascending pipe, the heat exchange effect of the ascending pipe of the coke oven is poor, excessive blockage of the ascending pipe is accumulated, and the production is seriously influenced.
The patent application numbers are: CN201110197405.5, with patent names: the cleaning device for waste heat utilization of the raw coke oven gas discloses a cleaning device for a riser, which is manually cleaned, is not automatically controlled, has high labor cost, cannot automatically identify whether the riser cover of a coal charging hole cover machine is opened or not, and can easily cause detonation to damage refractory materials of a carbonization chamber if air is mistakenly introduced to clean.
The patent application number is CN201310518531.5, and the patent name is: the positioning data processing method and the positioning data processing system of the coke oven mobile locomotive disclose a positioning method of the coke oven mobile locomotive, and the technical inspiration of accurately acquiring the operation time of the coke oven mobile locomotive is realized by combining the existing data acquisition software, and the operation time can be used for verifying whether the ascension pipe is in a cleanable state or not. However, the prior art does not disclose a method and a device for automatically controlling the cleaning of the ascending pipe, which causes great difficulty in popularizing the waste heat utilization technology of the ascending pipe.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method and a system for controlling the cleaning interlock of a coke oven ascending pipe,
a coke oven ascending pipe cleaning interlocking control method comprises the following steps:
s01, monitoring a switching value input event A triggered by the complete closing of a water seal valve between a rising pipe and a gas collecting pipe;
s02, monitoring an opening and closing quantity input event B triggered by the opening of a riser cover;
s03, judging whether the ascending pipe is in a state of isolating explosive gas according to the switching value input event in the steps S01 and S02, and the method comprises the following steps: acquiring water seal valve address data C and riser cap address data D which generate the input event, judging whether riser address data corresponding to the water seal valve and the riser cap are matched, and determining that the riser is in an explosive gas isolation state when the riser address data corresponding to the water seal valve and the riser cap are matched;
s04, acquiring temperature state parameters and address data of a coal charging hole at the top end of the carbonization chamber communicated with the ascending pipe;
s05, judging whether the ascending pipe is in a gas-permeable state according to the temperature state parameters of the coal charging hole in the step S04, and the method comprises the following steps: acquiring address data of the coal charging hole, judging whether the coal charging hole is matched with the address data of the ascending pipe or not, judging whether the temperature of the currently extracted coal charging hole is larger than or equal to a preset temperature threshold value or not when the coal charging hole is matched with the address data of the ascending pipe, and determining that the ascending pipe is in a gas-permeable state when the temperature is larger than or equal to the threshold value;
s06, acquiring coke pushing plan time information and current time information of a carbonization chamber communicated with the ascending pipe;
s07, judging whether the ascending pipe is in a cleanable state according to the difference F between the coke pushing planning time and the current time in the step S06, and the method comprises the following steps: judging whether the currently extracted time difference F is greater than or equal to a preset time first threshold value or less than or equal to a preset time third threshold value, and determining that the ascending pipe is in a state of needing to be manually confirmed to be cleaned;
s08, judging whether the ascending pipe is in a cleanable state according to the difference F between the coke pushing planning time and the current time in the step S06, wherein the judgment comprises the following steps: judging whether the difference F of the currently extracted time is smaller than a preset time second threshold value and larger than a preset time third threshold value or not, and determining that the ascending pipe is in a cleanable state;
s09, monitoring a switching value input event I input by a manual/automatic module, judging whether the ascending pipe is in an automatic cleaning state, determining that the ascending pipe is in a non-automatic cleaning state when the event I is a manual signal, and determining that the ascending pipe is in an automatic cleaning state when the event I is an automatic signal;
and S10, judging whether the state parameters in the steps S01, S02, S05, S07, S08 and S09 are simultaneously provided in the ascending pipe or not according to the state parameter information in the steps S01, S02, S05 and S08 and the automatic cleaning state in the step S09, and controlling the control system to output a signal for cleaning the ascending pipe when the state parameters in the steps S01, S02, S05 and S08 and the automatic cleaning state in the step S09 are simultaneously provided.
In a preferred embodiment of the above technical solution, the coke oven ascension pipe cleaning interlock control system according to the embodiment of the present invention further includes: the fixed terminal collects and outputs switching value input events A and B and address data C and D in the steps S01 and S02, and the mobile terminal collects and outputs temperature state parameters and address information of the coal charging holes in the step S04; the PLC is communicated with the fixed terminal and the mobile terminal and is provided with a storage unit and a data acquisition unit; the PG/PC is connected with the PLC through a PPI cable; the switch is connected with the PLC through an industrial Ethernet; the monitoring center is connected with the switch through an industrial Ethernet;
further, the fixed terminal comprises a water seal valve proximity switch, a riser cover proximity switch and a riser purging device connected with the PLC through a control cable, wherein the water seal valve proximity switch is used for detecting a switching value signal of the water seal valve, and the riser cover proximity switch is used for detecting a switching value signal of the upper tube cover;
further, the mobile terminal includes: the system comprises a line scanner for acquiring address information of the coal charging hole, an infrared thermometer for acquiring temperature state parameters of the coal charging hole of the coke oven and a wireless communication module;
furthermore, the proximity switch of the water seal valve and the proximity switch of the ascending pipe cover are connected with the PLC with the data collector through communication cables, and the line scanner and the infrared thermometer transmit the collected address information and the temperature state parameters to a computer of the mobile terminal; the computer of the mobile terminal is connected with the PLC through a wireless communication module;
and the upper computer acquires coke pushing planning time information and current time information of the coking chamber communicated with the ascending pipe in the step S06 through a coke pushing operation entry program of the coke oven, and outputs a difference value F in the step S06.
As an improvement of the above technical solution, the monitoring center includes a VPN router, an upper computer and a data storage unit, the VPN router is connected to the upper computer, and the upper computer is connected to the data storage unit.
As an improvement of the technical scheme, the detection end of the proximity switch of the water seal valve is arranged at the position which is right opposite to the opening or closing control device of the water seal valve when the opening or closing control device of the water seal valve is opened or closed.
As an improvement of the technical scheme, the detection end of the proximity switch of the ascending pipe cover is arranged at the position which is opposite to the ascending pipe cover opening and closing control device when the ascending pipe cover is opened or closed.
As an improvement of the technical scheme, the mobile terminal also comprises a temperature measuring track, a bar code plate and a mobile device, wherein the temperature measuring track is a track arranged at the top of a coal-charging dust-removing pipe at the coke side of the coke oven, and a row of coal-charging holes positioned at the top of the coke oven are temperature measuring holes; the bar code board is arranged beside the temperature measuring track; the mobile device is a mobile device which can automatically walk on a track through a self-contained power supply or an external commercial power and comprises a shell, a computer arranged in the shell, a wireless communication module, a line scanner, an infrared thermometer and a driving device.
As an improvement of the technical scheme, the temperature measuring direction of the infrared thermometer faces to one row of coal charging holes and is used for scanning and monitoring the temperature of each coal charging hole in sequence along with the movement of the moving device.
As an improvement of the above technical solution, the scanning direction of the line scanner faces the bar code card, and is used for sequentially scanning the bar code card information along with the movement of the moving device, and converting the scanning result into corresponding binary data.
As an improvement of the above technical scheme, the ascension pipe purging device comprises a manual/automatic module, a relay, an electromagnetic directional valve and a purging pipe in the step S09, wherein the manual/automatic module is connected with at least one relay through a field bus; the relay is connected with the electromagnetic directional valve; the electromagnetic directional valve is arranged on the gas transmission pipeline and used for controlling the ventilation of the gas transmission pipeline; one end of the purging pipe is connected with the gas transmission pipeline through a movable joint, and the other end of the purging pipe penetrates through the vent cover and is fixed on the vent hole of the ascending pipe.
The coke oven ascending pipe cleaning interlocking control system utilizes a PLC, an Ethernet communication module, a wireless communication module, an upper computer, configuration software and a data acquisition unit to be combined with a field water seal valve proximity switch, an ascending pipe cover proximity switch, a line scanner and an infrared thermometer on hardware. The industrial Ethernet can effectively avoid interference, upload acquired data, and enable the coke oven ascending pipe to clean the interlocking control system through the manual/automatic module so as to protect the safety of personnel and equipment; the advanced communication protocol can be used for programming an alarm program and rapidly determining an action state point; the upper computer accurately reports the type and the address number of the action state point, so that the control method of the invention can safely realize the automatic control of the cleaning of the ascending pipe of the coke oven.
The invention discloses a coke oven ascending pipe cleaning interlocking control method. The method has the advantages of ensuring the safety of a multistage control process, automatically controlling the cleaning of the ascending pipe, saving manpower and reducing the safety cost of manual operation, and has the following characteristics:
(1) The position states of the water seal valve and the ascending pipe cover are monitored through the proximity switch, wherein the inductive proximity switch has the characteristics of water resistance, shock resistance, oil resistance, dust resistance and corrosion resistance, can only detect metal objects, and has strong applicability to severe environments. The false output of signals after the approach switch is broken, power off and short circuit can be prevented;
(2) The step S03 can prevent the cleaned riser pipe to be cleaned from being in a state of not isolating explosive gas when the monitored riser pipes corresponding to the water seal valve and the riser pipe cover are not the same riser pipe.
(3) And (2) determining that the ascending pipe cover is in an open state through the step S02 and the coal charging hole cover is in an open state through the step S05, wherein the ascending pipe cover and the coal charging hole cover are consistent in address data, so that the condition that a ventilation inlet for cleaning the ascending pipe and an outlet for cleaning gas are both opened and a cleaning channel is smooth can be accurately determined.
(4) And S01, determining that the water seal valve is in a completely closed state, and accurately determining that the negative pressure generated by the flowing of the cleaning gas cannot suck the combustible and explosive gas on the other side of the water seal valve when the cleaning gas is used for cleaning the ascending pipe.
(5) And S07, comparing the precedence relationship between the current detection time and the planned coke pushing time, and further judging whether the current time is much earlier than the planned coke pushing time or not after the ascending pipe state meets the conditions of S01-S05, namely that coke in the carbonization chamber corresponding to the ascending pipe is not mature, and a large amount of flammable and explosive gas is still generated by dry distillation, and cleaning gas is not suitable to be introduced. Or the current time is later than the planned coke pushing time, namely the coking chamber corresponding to the ascending pipe is likely to be charged with coal and volatilize to generate a large amount of combustible and explosive gas, and the purging gas is not suitable to be introduced. The state that whether to clean the ascending pipe needs to be manually confirmed.
(6) The emergency control measures are added by step S09.
(7) The mobile terminal is arranged at the top of the coal-charging dust removal pipe at the coke side of the coke oven and is arranged along the length direction of the coke oven, so that the state information of whether the coal-charging hole cover is opened and the position information of the coal-charging hole cover are acquired, the automatic information collection capability is improved, the process of collecting the state information of whether the coal-charging hole cover is opened and the position information of the coal-charging hole cover can be independently carried out, and the operation interference of coke oven vehicles is avoided.
Drawings
FIG. 1 is a schematic process diagram of a cleaning interlock control system for a coke oven ascension pipe provided by the invention.
FIG. 2 is a schematic diagram of a cleaning interlock control system for a coke oven ascension pipe provided by the invention.
FIG. 3 is a schematic structural diagram of a coke pushing management system in the cleaning interlock control system for the ascending pipe of the coke oven provided by the invention.
FIG. 4 is a logic relationship diagram in the interlocking control method for cleaning the ascending pipe of the coke oven provided by the 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.
Example 1: as shown in fig. 1 and 2, a coke oven ascending pipe cleaning interlock control system comprises: the water seal valve 100 comprises a proximity switch 101, a riser cover proximity switch 202, a moving device 300 and a riser purging device 400; the detection end of the proximity switch 101 of the water seal valve is provided at a position 104 facing when the opening control device 102 of the water seal valve is opened or a position 103 facing when the closing control device is closed. The detection end of the rising lid approach switch 202 is provided at a position 206 which is opposed to the rising lid 201 when the opening/closing control device 205 is opened. The water seal valve 100 is installed on the gas collecting pipe 601, the bridge pipe 602 is installed on the water seal valve 100, the bridge pipe 602 is connected with the ascending pipe 200, the water seal valve proximity switch 101 and the ascending pipe cover proximity switch 202 are connected with the PLC 800 with the data collector 801 through the communication cable 701, and the PLC 800 is provided with the storage unit 802; the PG/PC 803 is connected to the PLC controller 800 via a PPI cable 702; the PLC controller 800 is connected to the switch 804 via the industrial ethernet 703; the switch 804 is connected to the monitoring center 900 through an industrial ethernet 703; the riser purging device 400 is connected with the PLC controller 800 through a control cable 704; the riser purging device 400 comprises a manual/automatic module 402, a relay 403, an electromagnetic directional valve 404 and a purging pipe 401, wherein the manual/automatic module 402 is connected with at least one relay 403 through a field bus 705; the relay 403 is connected with the electromagnetic directional valve 404; the electromagnetic directional valve 404 is arranged on a gas transmission pipeline 405 and is used for controlling the ventilation of the gas transmission pipeline 405; one end of the purging pipe 401 is connected with a gas transmission pipeline 405 through a movable joint 406, and the other end of the purging pipe passes through the vent cover 204 and is fixed on the vent hole 203 of the ascending pipe 200. The monitoring center 900 comprises a VPN router 901, an upper computer 902 and a data storage unit 903, wherein the VPN router 901 is connected with the upper computer 902, and the upper computer 902 is connected with the data storage unit 903.
The mobile device 300 is a mobile device 300 which can automatically travel on a rail 301 through a self-contained power supply or an external commercial power supply, the temperature measuring rail 301 is a rail 301 arranged at the top of a coal-charging dust-removing pipe 700 at the coke side of the coke oven, and a row of coal-charging holes 500 positioned at the top of the coke oven are temperature measuring holes; the bar code plate 501 is arranged beside the temperature measuring track 301; the mobile device 300 is composed of a housing 302, a second computer 306 arranged in the housing 302, a wireless communication module 307, a line scanner 304, an infrared thermometer 305 and a driving device 303. The temperature measuring direction of the infrared thermometer 305 faces to a row of coal charging holes 500, and the infrared thermometer is used for scanning and monitoring the temperature of each coal charging hole 500 in sequence along with the movement of the moving device 300. The scanning direction of the line scanner 304 is towards the bar code card 501, and the line scanner is used for scanning the information of the bar code card 501 in sequence along with the movement of the mobile device 300, and converting the scanning result into corresponding binary data. The second computer 306 is connected with the PLC controller 800 through a wireless communication module 307; the line scanner 304 and the infrared thermometer 305 transmit the acquired address information and the acquired temperature state parameters to the upper computer 902;
the upper computer 902 obtains the difference between the coke pushing planning time and the current time of the coking chamber 600 communicated with the ascending pipe 200 through a coke oven coke pushing operation recording program.
As shown in fig. 3, the coke pushing operation entry program of the coke oven is a component of a coke pushing management system, the whole system is based on an internal local area network of a coke oven central control room, and the main hardware configuration comprises: 1 database server, networked client workstations and printers, as the case may be. In consideration of the existing practical conditions, when a system application platform is built, a database server in a central control room and a client workstation closest to the database server are combined into one machine.
The users in the system include two roles: the authority responsibilities of the central control room operator and the operating area manager are different. The operator in the central control room completes the input and management of coke pushing production plan in each shift, prints the blank list of the coke pusher driver and coke pushing plan and distributes the blank list to relevant personnel to guide production, and inputs the coke pushing record fed back by the coke pusher driver into the system. The coke pushing records fed back by the coke pusher driver mainly include five key information, i.e., coke pusher driver blank table, which is filled by the coke pusher driver, including coke oven number, number of the coking chamber 600, coke pushing planning time of the coking chamber 600, coke pushing operation time of the coking chamber 600, and coal charging operation time of the coking chamber 600, as shown in table 1.
TABLE 1
The operating personnel of the central control room calculates and arranges the coke oven number, the coking chamber number, the coke-pushing planning time of the coking chamber and the actual coking time information recording table, namely the coke-pushing planning table, of the next operation period according to the coke-pushing records fed back by the coke-pushing vehicle driver, as shown in the table 2. The coke pushing schedule time in table 2 is obtained by adjusting the coal charging operation time in table 1 plus the schedule coking time in table 2 to +/-5 minutes.
TABLE 2
The data in the central control room operator table 2 is recorded into the database server of the coke pushing management system through the coke oven coke pushing operation recording program, and the upper computer 902 calls the information of the coke oven number, the number of the coking chamber 600, the coke pushing planning time of the coking chamber 600 and the like in the database server through the coke oven coke pushing operation recording program.
Example 2: as shown in FIG. 4, the interlocking control method for cleaning the ascending pipe of the coke oven comprises the following steps:
s01, monitoring a switching value input event A triggered by the complete closing of a water seal valve 100 between a 1# coke oven 02# ascending pipe 200 and a gas collecting pipe 601 through a water seal valve proximity switch 101;
s02, monitoring a switching value input event B triggered by the opening of a 1# coke oven 02# ascension pipe cover 201 through an ascension pipe cover approach switch 202;
s03, judging whether the 1# coke oven 02# ascending pipe 200 is in a explosive gas isolation state according to the switching value input events in the steps S01 and S02, and the method comprises the following steps: the PLC 800 acquires IP address data C of a No. 1 coke oven 02# water seal valve 100 and IP address data D of a No. 1 coke oven 02# ascending pipe cover 201 which generate the input events, the upper computer 902 judges whether the number address data of the ascending pipe 200 corresponding to the No. 1 coke oven 02# water seal valve 100 and the No. 1 coke oven 02# ascending pipe cover 201 are matched, and when the number address data of the ascending pipe 2 corresponding to the C and the D are matched, namely the number address data of the ascending pipe 200 corresponding to the No. 1 coke oven 02# ascending pipe are both 1# coke oven 02# ascending pipe 200, the 1# coke oven 02# ascending pipe 200 is determined to be in an explosive gas isolation state;
s04, the moving device 300 acquires temperature state parameters and address data of a coal charging hole 500 at the top end of a carbonization chamber 600 communicated with the 1# coke oven 02# ascension pipe 200;
s05, the infrared thermometer 305 of the moving device 300 determining whether the 1# coke oven 02# ascension pipe 200 is in a gas-permeable state according to the temperature state parameter of the 1# coke oven 02# coal charging hole 500 in the step S04, including: the line scanner 304 of the moving device 300 acquires address data of the 1# coke oven 02# coal charging hole 500, the upper computer 902 judges whether the address data of the 1# coke oven 02# coal charging hole 500 and the 1# coke oven 02# ascending pipe 200 are matched, namely, whether the address data are both 1# coke oven 02#, when the address data of the 1# coke oven 02# coal charging hole 500 and the 1# coke oven 02# ascending pipe 200 are matched, the upper computer 902 judges whether the temperature of the 1# coke oven 02# coal charging hole 500 extracted currently is greater than or equal to a preset temperature threshold value 300 ℃, and when the temperature is greater than or equal to a threshold value of 300 ℃, the infrared thermometer 305 scans the temperature of the coking chamber 600 below the 1# coke oven 02# coal charging hole cover 502, the 1# 02# coal charging hole cover 502 is opened, and the 1# coke oven 02# ascending pipe 200 is determined to be in a gas-accessible state; when the address data of the No. 1 coke oven 02# coaling hole 500 is not matched with the address data of the No. 1 coke oven 02# ascending pipe 200, the moving device 300 continues to move, and the line scanner 304 is used for acquiring the address data of other coaling holes 500 of the No. 1 coke oven;
and S06, calling information such as coke oven numbers, numbers of the coking chambers 600, and coke pushing planning time of the coking chambers 600 in the database server by the upper computer 902 through a coke oven coke pushing operation recording program, and acquiring coke pushing planning time information and current time information of the 1# coke oven 02# coking chamber 600 communicated with the 1# coke oven 02# ascension pipe 200.
Example 3:
s07, the coke pushing schedule time of the No. 1 coke oven 02 charring chamber in the step S06 is shown in Table 3. Time of flight
TABLE 3
The host computer 902 compares the planned time for pushing coke in the 1# coke oven 02# coking chamber 600 and the current time "2016-10-03 4: the step of judging whether the 1# coke oven 02# ascending pipe 200 is in a cleanable state or not by the difference F of 40 ″ -70 minutes includes the following steps: judging whether the difference F of the currently extracted time is greater than or equal to a first preset time threshold value of 60 minutes or less than or equal to a third preset time threshold value of 0 minute, wherein the F value is less than 0 minute at the moment, which indicates that the coke in the 1# coke oven 02# carbonization chamber 600 is pushed out early, the 1# coke oven 02# carbonization chamber 600 may be in a state of just being charged with coal, and the 1# coke oven 02# ascension pipe 200 is filled with inflammable and explosive gas, so that the 1# coke oven 02# ascension pipe 200 is determined to be in a state of needing to be manually confirmed to be cleaned;
example 4:
s07, the coke pushing schedule time of the 1# coke oven 02# coking chamber 600 in the step S06 is shown in Table 4.
TABLE 4
The upper computer 902 calculates the coke pushing schedule time and the current time "2016-10-03" of the 1# coke oven 02# carbonization chamber 600 in the step S06: 00", namely, 70 minutes, and judging whether the 1# coke oven 02# ascension pipe 200 is in a cleanable state, the method comprises the following steps: judging whether the difference value F of the currently extracted time is greater than or equal to a first preset time threshold value of 60 minutes or less than or equal to a third preset time threshold value of 0 minute, wherein the F value is greater than 60 minutes at the moment, which indicates that coke in the 1# coke oven 02# carbonization chamber 600 is not in the last stage of coking, the amount of crude coal gas generated in the 1# coke oven 02# carbonization chamber 600 is still more, and combustible and explosive gases are still more in the 1# coke oven 02# ascension pipe 200, and determining that the 1# coke oven 02# ascension pipe 200 is in a state needing to be manually confirmed to be cleaned;
example 5:
s07, the coke pushing schedule time of the 1# coke oven 02# coking chamber 600 in the step S06 is shown in Table 5.
TABLE 5
The upper computer 902 calculates the coke pushing schedule time and the current time "2016-10-03" of the 1# coke oven 02# carbonization chamber 600 in the step S06: the step F of determining whether the 1# coke oven 02# ascension pipe 200 is in a cleanable state or not, which is "40 minutes" being the difference F of 30 ″, includes: judging whether the difference value F of the currently extracted time is smaller than a preset time second threshold value of 60 minutes and larger than a preset time third threshold value of 0 minute, wherein the F value is larger than 0 minute and smaller than 60 minutes at the moment, which indicates that coke in the 1# coke oven 02# carbonization chamber 600 is in the coking end stage, the quantity of raw coke gas generated in the 1# coke oven 02# carbonization chamber 600 is less, combustible and explosive gas in the 1# coke oven 02# ascension pipe 200 is less, and determining that the 1# coke oven 02# ascension pipe 200 is in a cleanable state;
s09, monitoring a switching value input event I input by the manual/automatic module 402, judging whether the 1# coke oven 02# ascension pipe 200 is in an automatic cleaning state, determining that the 1# coke oven 02# ascension pipe 200 is in a non-automatic cleaning state when the event I is a manual signal, and determining that the 1# coke oven 02# ascension pipe 200 is in an automatic cleaning state when the event I is an automatic signal;
and S10, judging whether the 1# coke oven 02# ascension pipe 200 has the state parameters in the steps S01, S02, S05, S07, S08 and S09 at the same time according to the state parameter information in the steps S01, S02, S05 and S08 and the automatic cleaning state in the step S09, and controlling the control system to output a signal for cleaning the 1# coke oven 02# ascension pipe 200 when the state parameters in the steps S01, S02, S05 and S08 and the automatic cleaning state in the step S09 are simultaneously provided.
Example 6:
s01, monitoring a switching value input event A triggered by the complete closing of a water seal valve 100 between a 1# coke oven 02# ascending pipe 200 and a gas collecting pipe 601 through a water seal valve proximity switch 101;
s02, monitoring an opening and closing amount input event B triggered by the opening of the # 1 coke oven 07# ascension pipe cover 202 through the ascension pipe cover approach switch 201, but not monitoring the opening and closing amount input event B triggered by the opening of the # 1 coke oven 02# ascension pipe cover 200;
s03, judging whether the 1# coke oven 02# ascending pipe 200 is in a explosive gas isolation state according to the switching value input events in the steps S01 and S02, and the method comprises the following steps: the PLC controller acquires 100IP address data C of a No. 1 coke oven 02# water seal valve generating the input event and 1# coke oven 07# ascending pipe cover 202IP address data D, the upper computer 902 judges that the No. 1 coke oven 02# water seal valve 101 and the ascending pipe 200 number address data corresponding to the No. 1 coke oven 07# ascending pipe cover 202 are not matched, the condition that the No. 1 coke oven 02# ascending pipe 200 is not in an explosive gas isolation state is determined, and the upper computer 902 sends an alarm signal;
and S10, judging that the 1# coke oven 02# ascension pipe 200 does not have the state parameters in the steps S01, S02, S05, S07, S08 and S09 according to the state parameter information in the steps S01, S02, S05 and S08, and controlling the control system to output a signal for cleaning the 1# coke oven 02# ascension pipe 200.
Example 7:
s01, monitoring a switching value input event A triggered by the complete closing of a water seal valve 100 between a 1# coke oven 02# ascending pipe 200 and a gas collecting pipe 601 through a water seal valve proximity switch 101;
s02, monitoring a switching value input event B triggered by the opening of a No. 1 coke oven 02 and a No. 1 ascension pipe cover 202 through a ascension pipe cover approach switch 201;
s03, judging whether the 1# coke oven 02# ascending pipe 200 is in a explosive gas isolation state according to the switching value input events in the steps S01 and S02, and the method comprises the following steps: the PLC 800 acquires IP address data C of a No. 1 coke oven 02# water seal valve 100 and IP address data D of a No. 1 coke oven 02# ascending pipe cover 202 which generate the input events, the upper computer 902 judges whether the number address data of the ascending pipe 200 corresponding to the No. 1 coke oven 02# water seal valve 100 and the No. 1 coke oven 02# ascending pipe cover 202 are matched, and when the number address data of the ascending pipe 200 corresponding to the C and the D are matched, namely the number address data of the ascending pipe 200 corresponding to the No. 1 coke oven 02# ascending pipe are both 1# coke oven 02# ascending pipe 200, the 1# coke oven 02# ascending pipe 200 is determined to be in an explosive gas isolation state;
s04, the moving device acquires temperature state parameters and address data of a coal charging hole 500 at the top end of the carbonization chamber 600 communicated with the 1# coke oven 02# ascending pipe;
s05, the infrared thermometer 305 of the moving device judges whether the 1# coke oven 02# ascension pipe 200 is in a gas-permeable state according to the temperature state parameter of the 1# coke oven 02# coal charging hole 500 in the step S04, and the method comprises the following steps: the line scanner 304 of the mobile device 300 acquires address data of the 1# coke oven 02# coal charging hole 500, the upper computer 902 judges whether the address data of the 1# coke oven 02# coal charging hole 500 and the 1# coke oven 02# ascending pipe 200 are matched, namely, whether the address data are both 1# coke oven 02#, when the address data of the 1# coke oven 02# coal charging hole 500 and the 1# coke oven 02# ascending pipe 200 are matched, the upper computer 902 judges whether the temperature of the 1# coke oven 02# coal charging hole 500 extracted currently is greater than or equal to a preset temperature threshold value of 150 ℃, when the temperature is less than 300 ℃, the temperature is determined to be that an infrared thermometer threshold value scans the temperature of a coal charging hole cover 502 of a 1# coke oven 02# carbonization chamber, the coal charging hole cover 501 is not opened, the 1# coke oven 02# ascending pipe 200 is determined to be in a gas non-introduction state, and the upper computer 902 determines that the ascending pipe 200 is in a non-automatic cleaning state;
and S10, judging that the 1# coke oven 02# ascension pipe 200 does not have the state parameters in the steps S01, S02, S05, S07, S08 and S09 according to the state parameter information in the steps S01, S02, S05 and S08, and controlling the control system to output a signal for cleaning the 1# coke oven 02# ascension pipe 200.
The foregoing is directed to the preferred embodiment of the present invention, and it is understood that various changes and modifications may be made by one skilled in the art without departing from the spirit of the invention, and it is intended that such changes and modifications be considered as within the scope of the invention.
Claims (9)
1. A coke oven ascending pipe cleaning interlocking control method is characterized by comprising the following steps:
s01, monitoring a switching value input event A triggered by the complete closing of a water seal valve between a rising pipe and a gas collecting pipe;
s02, monitoring an opening and closing quantity input event B triggered by the opening of a riser cover;
s03, judging whether the ascending pipe is in a state of isolating explosive gas according to the switching value input event in the steps S01 and S02, and the method comprises the following steps: acquiring water seal valve address data C and riser cover address data D which generate the input event, judging whether riser address data corresponding to the water seal valve and the riser cover are matched, and determining that the riser is in an explosive gas isolation state when the riser address data corresponding to the C and the D are matched;
s04, acquiring temperature state parameters and address data of a coal charging hole at the top end of a carbonization chamber communicated with the ascending pipe;
s05, judging whether the ascending pipe is in a gas-permeable state according to the temperature state parameters of the coal charging hole in the step S04, and the method comprises the following steps: acquiring address data of the coal charging hole, judging whether the address data of the coal charging hole is matched with the address data of the ascending pipe, judging whether the temperature of the currently extracted coal charging hole is greater than or equal to a preset temperature threshold value or not when the address data of the coal charging hole is matched with the address data of the ascending pipe, and determining that the ascending pipe is in a gas-permeable state when the temperature is greater than or equal to the threshold value;
s06, acquiring coke pushing plan time information and current time information of a carbonization chamber communicated with the ascending pipe;
s07, judging whether the ascending pipe is in a cleanable state according to the difference F between the coke pushing planning time and the current time in the step S06, and the method comprises the following steps: judging whether the currently extracted time difference value F is greater than or equal to a preset time first threshold value or less than or equal to a preset time third threshold value, and determining that the ascending pipe is in a state of needing to be manually confirmed to be cleaned;
s08, judging whether the ascending pipe is in a cleanable state according to the difference F between the coke pushing planning time and the current time in the step S06, and the method comprises the following steps: judging whether the difference value F of the currently extracted time is smaller than a preset time second threshold value and larger than a preset time third threshold value or not, and determining that the ascending pipe is in a cleanable state;
s09, monitoring a switching value input event I input by a manual/automatic module, judging whether the ascending pipe is in an automatic cleaning state, determining that the ascending pipe is in a non-automatic cleaning state when the event I is a manual signal, and determining that the ascending pipe is in an automatic cleaning state when the event I is an automatic signal;
and S10, judging whether the state parameters in the steps S01, S02, S05, S07, S08 and S09 are simultaneously provided in the ascending pipe or not according to the state parameter information in the steps S01, S02, S05 and S08 and the automatic cleaning state in the step S09, and controlling the control system to output a signal for cleaning the ascending pipe when the state parameters in the steps S01, S02, S05 and S08 and the automatic cleaning state in the step S09 are simultaneously provided.
2. A coke oven riser cleaning interlock control system based on the method of claim 1, comprising: the fixed terminal collects and outputs switching value input events A and B and address data C and D in the steps S01 and S02, and the mobile terminal collects and outputs temperature state parameters and address information of the coal charging holes in the step S04; the PLC is communicated with the fixed terminal and the mobile terminal and is provided with a storage unit and a data acquisition unit; the PG/PC is connected with the PLC through a PPI cable; the switch is connected with the PLC through an industrial Ethernet; the monitoring center is connected with the switch through an industrial Ethernet;
the fixed terminal comprises a water seal valve proximity switch, a riser cover proximity switch and a riser purging device connected with the PLC through a control cable, wherein the water seal valve proximity switch is used for detecting a switching value signal of the water seal valve, and the riser cover proximity switch is used for detecting a switching value signal of the riser cover;
the mobile terminal includes: the system comprises a line scanner for acquiring address information of the coal charging hole, an infrared thermometer for acquiring temperature state parameters of the coal charging hole of the coke oven and a wireless communication module;
the water seal valve proximity switch and the ascending pipe cover proximity switch are connected with the PLC with the storage unit and the data collector through communication cables, and the line scanner and the infrared thermometer transmit the acquired address information and the acquired temperature state parameters to a computer of the mobile terminal; the computer of the mobile terminal is connected with the PLC through a wireless communication module;
and the industrial control machine acquires coke pushing planning time information and current time information of the carbonization chamber communicated with the ascending pipe in the step S06 through a coke pushing operation input program of the coke oven, and outputs the difference F in the step S06.
3. The coke oven ascension pipe cleaning interlock control system according to claim 2, further characterized in that: the monitoring center comprises a VPN router, an upper computer and a data storage unit, wherein the VPN router is connected with the upper computer, and the upper computer is connected with the data storage unit.
4. The coke oven ascension pipe cleaning interlock control system of claim 2, further characterized in that: the water seal valve is close to the switch detection end and is arranged at the position which is right opposite to the water seal valve opening and closing control device when the water seal valve opening and closing control device is opened or closed.
5. The coke oven ascension pipe cleaning interlock control system of claim 2, further characterized in that: the detection end of the proximity switch of the ascending pipe cover is arranged at the position which is right opposite to the ascending pipe cover opening and closing control device when the ascending pipe cover is opened or closed.
6. The coke oven ascension pipe cleaning interlock control system according to claim 2, further characterized in that: the mobile terminal also comprises a temperature measuring track, a bar code board and a mobile device, wherein the temperature measuring track is a track arranged at the top of the coal charging and dust removing pipe at the coke side of the coke oven, and a row of coal charging holes positioned at the top of the coke oven are temperature measuring holes; the bar code plate is arranged beside the temperature measuring track; the mobile device is a mobile device which can automatically walk on the track through a self-contained power supply or an external commercial power and comprises a shell, a computer arranged in the shell, a wireless communication module, a line scanner, an infrared thermometer and a driving device.
7. The coke oven riser cleaning interlock control system according to any one of claims 2 or 6, further characterized in that: the temperature measuring direction of the infrared thermometer faces to a row of coal charging holes and is used for scanning and monitoring the temperature of each coal charging hole in sequence along with the movement of the moving device.
8. The coke oven riser cleaning interlock control system of any one of claims 2 or 6 further characterized by: the scanning direction of the line scanner faces the bar code plate and is used for scanning information of the bar code plate in sequence along with the movement of the mobile device and converting a scanning result into corresponding binary data.
9. The coke oven ascension pipe cleaning interlock control system of claim 2, further characterized in that: the ascending pipe purging device comprises a manual/automatic module, a relay, an electromagnetic directional valve and a purging pipe in the step S09, wherein the manual/automatic module is at least connected with one relay through a field bus; the relay is connected with the electromagnetic directional valve; the electromagnetic directional control valve is arranged on the gas transmission pipeline and used for controlling the ventilation of the gas transmission pipeline; one end of the purging pipe is connected with the gas transmission pipeline through a movable joint, and the other end of the purging pipe penetrates through the vent cover and is fixed on the vent hole of the ascending pipe.
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| CN107557031A (en) * | 2017-10-18 | 2018-01-09 | 南京沪友冶金机械制造有限公司 | A kind of detection method of charging hole lid of coke oven state |
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| CN107557030A (en) * | 2017-10-18 | 2018-01-09 | 南京沪友冶金机械制造有限公司 | A kind of associated detecting method of coke oven coke oven uprising tube and charging hole lid state |
| CN113862006B (en) * | 2020-06-30 | 2022-06-28 | 宝山钢铁股份有限公司 | Method for controlling smoke generation during opening of coke oven ascending pipe |
| CN116144382A (en) * | 2022-11-22 | 2023-05-23 | 重庆钢铁股份有限公司 | An inspection and treatment method for short circuit blockage of coke oven valve body |
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