CN101928572B - Electrical debugging method of coke dry quenching electrical drive and control system - Google Patents
Electrical debugging method of coke dry quenching electrical drive and control system Download PDFInfo
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- CN101928572B CN101928572B CN 200910053481 CN200910053481A CN101928572B CN 101928572 B CN101928572 B CN 101928572B CN 200910053481 CN200910053481 CN 200910053481 CN 200910053481 A CN200910053481 A CN 200910053481A CN 101928572 B CN101928572 B CN 101928572B
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Abstract
The invention relates to the field of debugging methods of electrical systems of metallurgical equipment, in particular to an electrical debugging method of a coke dry quenching electrical drive and control system. The electrical debugging method of the coke dry quenching electrical drive and control system comprises the following steps of: a. entry of debugging person; b. general inspection of equipment; c. cable line calibration; d. testing of electrical equipment units; e. testing and setting of system protection device units; f. debugging of a variable-frequency adjustable-speed device; g. testing of a PLC (Programmable Logic Controller) interface; h. debugging of a process control computer; i. system no-operation testing; j. single testing of power control center equipment; k. mechanical debugging; l. system debugging under the control of the PLC; m. commissioning without load linkage; and n. trial production. The invention meets requirements of installation and inspection standards of strict design specifications and has the advantages of simple debugging method, safety, reliability and high operation efficiency.
Description
Technical field
The present invention relates to the adjustment method field of metallurgical equipment electrical system, be specially a kind of dry coke quenching Electrified Transmission and Controlling System electric debugging method.
Background technology
Dry quenching(of coke) is that new in the world at present of being born smelts power-saving technology, and its English name is Coke Dry Quenching, is called for short CDQ.Dry coke quenching is to be thermal barrier with circulated inert gas, discharges below by recirculation blower cold recycle gas being imported red burnt cooling room cooling down high-temperature coke to 250 ℃.Cycling hot conductance behind the absorption coke heat is gone into waste heat boiler and is reclaimed heat, produces steam.After recycle gas cooling, the dedusting, return cooling room through blower fan again, so red Jiao of circulation cooling.The steam that coke dry quenching boiler produces or incorporate factory's internal steam pipe net into or send to generating.Dry Quenching Technology is great energy-conservation project, owing to finish the quenching process in closed system, compare with common coke wet quenching, but the discharging of basically eliminate phenol, HCN, H2S, NH3 reduces burnt dirt discharging, and saves the quenching water.Dry coke quenching engineering Electrified Transmission and Controlling System are made up of seven parts such as comprehensive electric panel room body Electrified Transmission, pump station of recirculation water Electrified Transmission, deaerated feedwater pumping plant Electrified Transmission, desalted water station Electrified Transmission, dry coke quenching ground station for dust removal Electrified Transmission, the burnt Electrified Transmission of dry coke quenching fortune storage, elevator system, and the electric adjustment after installing is the committed step that assurance equipment runs well.Because Dry Quenching Technology belongs to emerging field, only there is enterprise of the man a few family of very few number in the unit of domestic this method of employing, also is in the stage of fumbling for the installation of dry coke quenching equipment, exists much not science, irrational place, the debug process complexity.
Summary of the invention
In order to overcome the defective of prior art, a kind of safe and reliable electric installation installation method is provided, the invention discloses a kind of dry coke quenching Electrified Transmission and Controlling System electric debugging method.
The present invention reaches goal of the invention by following technical solution:
A kind of dry coke quenching Electrified Transmission and Controlling System electric debugging method; carry out successively as follows: a. commissioning staff enters; b. equipment general inspection; c. cable line check and correction; d. electrical appliance test; e. system protection device single test and adjusting; f. RHVC debugging; the test of g.PLC interface; h. process control computer debugging; i. system's blank operation test; j. power Control Center tables of equipment examination; k. band machinery debugging; l.PLC control system debug down; m. zero load interlock trial trip and n. trial production; f. the RHVC debugging comprises the inspection to installation situation and frequency control motor; the debugging of variable frequency regulating speed control equipment; system's blank operation test; speed control by frequency variation debugging and the examination of power Control Center tables of equipment is characterized in that:
B. during the equipment general inspection, equipment is carried out visual inspection, confirm not damaged, no Short Item, and indicate significantly and respectively coil cabinet label and title, check each equipment first and second wiring integrity and arrange in order, connector lug is fastening good and mark, the insulation of monitoring device
When d. electrical appliance was tested, test motor and loop insulation to capacity 100kW and above electric motor, were measured the dc resistance of its each phase winding, and difference is no more than 2% of its minimum value mutually; Direct current resistance between the electric motor measuring line that neutral point is not drawn, its mutual difference is no more than 1% of its minimum value,
When j. the power Control Center tables of equipment tried, the insulating resistance value of measuring low-voltage apparatus and secondary circuits was not less than 0.5M Ω,
When f. RHVC was debugged, break(ing)-in-period was 2 hours.
During the test of g.PLC interface,
After system send electricity, hardware device is carried out autodiagnosis, and check the I/O interface of PLC system,
On-the-spot all devices is carried out analog D I, AI, IP input signal, on the PLC System Monitor, check and confirm address and signal, on the PLC System Monitor, force output DO, AO, PO signal, carry out the affirmation of signal at the scene, after confirming to finish, the application software of packing into, carry out software rejuvenation, parameter setting carries out the data communication test between each PLC
During m. zero load interlock trial trip,
Confirm motor and system wiring is errorless and the good situation that insulate under,
Disconnect the catcher that is connected between electric motor and the mechanical means, manual jiggering, operated motor is measured the empty load of motor electric current, and is performed record then, and electric machine temperature rise and bearing temperature rise are write down in motor idle running 2 hours to 4 hours.
Described dry coke quenching Electrified Transmission and Controlling System electric debugging method, it is characterized in that: the debugging of h. process control computer comprises the application software debugging under network hardware checkout and the cold conditions no load condition, during network hardware checkout, after system send electricity, hardware device is carried out autodiagnosis, and check whether inter-net communication is unimpeded, whether data message transmits correct, on each point of network, check affirmation, when the application software under the cold conditions no load condition is debugged, after the application software of packing into, start computer and carry out autodiagnosis, check, and check that the communication situation of computer and PLC, simulated data transmit and produce instruction; Assign the collection of the production program and production actual achievement; Simulation unit production and fault information collection; Printing and the picture of checking these analog informations show, check to the running condition of process control computer and with the coordinated operation situation of PLC according to simulated data at last, and check material tracking, failure message, report printing.
The present invention is by the installation and the detection reference of strict design specifications, and adjustment method is simple, and is safe and reliable, the operating efficiency height.
Description of drawings
Fig. 1 is a schema of the present invention.
Embodiment
Below further specify the present invention by specific embodiment.
Embodiment 1
A kind of dry coke quenching Electrified Transmission and Controlling System electric debugging method; carry out successively as follows: a. commissioning staff enters; b. equipment general inspection; c. cable line check and correction; d. electrical appliance test; e. system protection device single test and adjusting; f. RHVC debugging; the test of g.PLC interface; h. process control computer debugging; i. system's blank operation test; j. power Control Center tables of equipment examination; k. band machinery debugging; l.PLC control system debug down; m. zero load interlock trial trip and n. trial production; f. the RHVC debugging comprises the inspection to installation situation and frequency control motor; the debugging of variable frequency regulating speed control equipment; system's blank operation test; speed control by frequency variation debugging and the examination of power Control Center tables of equipment
Finish following preparation of construction before the debugging beginning:
1 technology is prepared
(1) before the debugging, the project leader carries out safely, confides a technological secret all commissioning staffs, clearly debugs scope and debugging main points, and the debugging requirement is described.
(2) be familiar with electrical construction drawing and correlation technique data, prepare various debugging recording forms.
(3) commissioning staff must hold the electrician and operates card.
2 adjusting instruments, instrument, equipment and material are prepared
The external conditions requirement of 3 debugging
(1) clean and tidy no-sundries in electric panel room and the watch-keeping cubicle, all dish cabinets all are in place, and cable connection finishes, and dish cabinet label is clear and definite.
(2) on-the-spot each point position equipment all is in place, and cable connection finishes.
(3) the ground system ground connection of electric panel room and on-the-spot all devices and electric motor is good.
(4) the bright lamp of electric panel room and watch-keeping cubicle intraoral illumination, it is on duty to establish the special messenger, has set up/go out system.
4 safety specifications
(1) should pull on red white safety rope in the test run zone of equipment, hang up the test run warning board, and in the test run zone, set up the safety custody people, prevent that unrelated person is strayed into this zone.
(2) have a power failure and send electric operation, must establish the special messenger and be responsible for contact, the operator must be submit onself to someone's direction; Equipment should hang up warning board immediately behind transmission operation.
(3) electric panel room is before sending electricity, and fire alarm system and air conditioner ventilating system should put into operation.
Can begin after being ready to complete the debugging, journey figure as shown in Figure 1,
1. equipment general inspection
(1) equipment is carried out visual inspection, confirm not damaged, no Short Item.Each coils the cabinet label, title should indicate obviously.
(2) whether model, specification, quantity and the installation site according to the working drawing monitoring device meets the requirements.
(3) first and second wiring of each equipment should be complete, arrange in order, connector lug is should be fastening good and mark.
(4) to the inspection of insulating of each equipment, the meet the specifications requirement is answered in insulation.
2. cable line check and correction
(1) core section of power cable should adhere to specification.
(2) the heart yearn wiring of umbilical cable should meet the principle expansion wiring scheme of design.
(3) each cable connection, equipment wiring are all should be fastening good and mark is clear and definite.
(4) grounding wire should connect by figure, and is complete errorless.
(5) each line loop insulation should be good, the meet the specifications requirement.
3. electric motor inspection and loop insulation test
(1) nameplate of inspection motor determines whether its capacity, voltage range, the mode of connection, insulation level, manufacturer or the like meet with drawing;
(2) insulating resistance value of measurement motor main circuit and brake loop should meet the requirements;
(3) to the electric motor more than the capacity 100kW, measure the dc resistance of its each phase winding, difference should not surpass 2% of its minimum value mutually; But direct current resistance between the electric motor measuring line that neutral point is not drawn, its mutual difference should not surpass 1% of its minimum value.
(4) check that stator winding connects, should be correct; The electric motor that the neutral point line has led to the leading-out terminal daughter board should be checked the polarity of stator winding.
4. power Control Center equipment test
(1) insulating resistance value of measurement low-voltage apparatus and secondary circuits should be less than 0.5M Ω.
(2) test of the monomer of each protective relay is undertaken by the regulation of relevant rly..
(3) adjusting of each protector should be adjusted by design load.
5.PLC interface test
(1) on-the-spot all devices is carried out input signals such as analog D I, AI, IP, on the PLC System Monitor, check and confirm address and signal.
(2) on the PLC System Monitor, force signals such as output DO, AO, PO, carry out the affirmation of signal at the scene.
6. Controlling System blank operation test
(1) in parting system, under the prerequisite of each master loop, system's control loop, protection loop, signal circuit and interlock circuit are carried out the actual act inspection according to control principle figure and processing requirement.
(2) confirm to cause physical abuse in no instance with mechanical personnel.
(3) each limit switch, position switch, protection switch are carried out action checking and the position presets.
7. zero load single examination
(1) electric motor list examination
1. reaffirm that motor and system wiring are errorless and insulation is good;
2. must there be mechanical personnel to cooperate at the scene; Disconnect the catcher that is connected between electric motor and the mechanical means, assurance electric motor and mechanical means are thrown off.
3. manual jiggering guarantees that motor reel works well, and on-streamly can not cause mechanical action.
4. operated motor after mechanical personnel confirm, and confirm that by mechanical personnel the motor sense of rotation should meet processing requirement; Vibration, noise, temperature rise meet the requirements.
5. measure the empty load of motor electric current, and perform record.
6. motor idle running should be more than 2 hours, electric machine temperature rise for confirmation and bearing temperature rise situation.
(2) the single examination of electric motor band mechanical means
1. be with the mechanical means trial trip carrying out under the mechanical staffing and under relevant personnel's coordinated.
2. after by the mechanical relevant personnel being connected between electric motor and the mechanical means being connected, scrutiny is confirmed can try out after mechanical means has reached operating condition.
3. in band mechanical means trial trip process, pay close attention to the action situation of mechanical means, must obey mechanical personnel's commander, the assurance test run is carried out in order.
4. hydraulic pressure and pneumatic system must be working properly at Hydraulic Station body and source of the gas body, errorless, the pressure of mechanical means action in manual " disclosing valve " process and flow is normal, each limit switch has preset and move normal after, just available electrically operated mode is carried out trial trip and system's adjustment, and finally determines mechanical action stroke, speed and limit switch position.
5. in the trial trip process, should test, write down relevant data, test-results should meet equipment and processing requirement.
8. AC variable-frequency speed regulation system debugging
In this engineering, the transmission of equipment component is to adopt the Digital AC frequency conversion speed-adjusting system, reaches the desired adjustable-speed purpose of technology.
(1) to the inspection of installation situation
1. equipment general inspection
A. equipment is carried out visual inspection, confirm not damaged, no Short Item.Each coils the cabinet label, title should indicate obviously.
B. whether model, specification, quantity and the installation site according to the working drawing monitoring device meets the requirements.
C. first and second wiring of each equipment should be complete, arrange in order, connector lug is should be fastening good and mark.
D. to the inspection of insulating of each equipment, the meet the specifications requirement is answered in insulation.
2. electric motor inspection and loop insulation test
A. check the nameplate of motor, determine whether its capacity, voltage range, the mode of connection, insulation level, manufacturer or the like meet with drawing;
B. measure the insulating resistance value of motor main circuit and brake loop, should meet the requirements;
C. to the electric motor more than the capacity 100kW, measure the dc resistance of its each phase winding, difference should not surpass 2% of its minimum value mutually; But direct current resistance between the electric motor measuring line that neutral point is not drawn, its mutual difference should not surpass 1% of its minimum value.
D. check that stator winding connects, should be correct; The electric motor that the neutral point line has led to the leading-out terminal daughter board should be checked the polarity of stator winding.
3. power Control Center equipment test
A. the insulating resistance value of measuring low-voltage apparatus and secondary circuits should be less than 0.5M Ω.
B. the test of the monomer of each protective relay is undertaken by the regulation of relevant rly..
C. adjusting of each protector should be adjusted by design load.
(2) debugging of variable frequency regulating speed control equipment
1. voltage of supply, phase sequence are checked affirmation.
2. the protection loop is checked, adjusted by the design set-point.
3. the simulation test of carrying out with good conditionsi.
(3) system's blank operation test
(4) the single examination of speed control by frequency variation debugging and M
1. according to the given parameters of design, frequency conversion speed-adjusting system is set, basic parameter comprises: every basic parameter of initiating frequency, limiting frequency, upper limiting frequency, lower frequency limit and motor; Power, rotating speed bound, current maxima, voltage max, acceleration and deceleration time, starting braking time.
2. reaffirm that the motor catcher removes, require the on the scene and agreement rotary electric machine of mechanical personnel.
3. carry out the single examination of speed control by frequency variation debugging work and M, start-up system on request, whether in time observe motor rotation direction, noise level, temperature rise situation, the transition when changing rotating speed steady.Break(ing)-in-period is 2 hours.
(5) AC variable-frequency speed regulation system is carried out function check and is with mechanical trial trip
1. measure maximum speed, minimum speed and corresponding frequency converter frequency and voltage, electric current.
Whether transient response was level and smooth when 2. rotating speed changed.
3. whether steadily start, quicken, slow down, stop, whether normally promptly stop.
4. loop works such as protection, signal are normal.
9.PLC the debugging of system
(1) preparation before the debugging
1. conscientiously check drawing, understand whole project profile; Grasp the technological process of production and each accent performance and control principle fully, establishment debugging outline.
2. confirm that model, specification, the quantity of erecting equipment should be correct, visual inspection is normal.
3. all cables that lay, electric wire wiring are correct, and number hoop is clear, and screw is firm.
4. the electric insulation of equipment and cable is normal.
5. ground path adheres to specification, and protective ground, working grounding, shield earthing meet the requirements.
6. ups power can works better.
(2) hardware check test
1. by design paper check all plug-in unit models, quantity meets the requirements, by the design implementation parameter setting.
2. check and confirm that PLC system device (as peripherals, operator's console, inspection station, printer, workstation) and operator-machine-interface HMI etc. all are in place, wiring finishes, adhere to specification.
3. after system send electricity, hardware device is carried out autodiagnosis.
4. with the I/O interface check of PLC system
A. on-the-spot all devices is carried out input signals such as analog D I, AI, IP, on the PLC System Monitor, check and confirm address and signal.
B. on the PLC System Monitor, force signals such as output DO, AO, PO, carry out the affirmation of signal at the scene.
5. peripherals is carried out function check.
(3) application software debugging
1. the application software of packing into is carried out software rejuvenation, parameter setting.
2. carry out the data communication test between each PLC.
3. simple processing unit is carried out input and output and confirming operation.
4. single devices is carried out dynamic testing, all tests that might relate to mechanical means must be obtained mechanical personnel in advance and agree, and take the necessary security measure.
5. carry out segmentation interlock debugging, to check the establishment situation of application software.
6. according to processing requirement, to on-the-spot all devices continuously, operate repeatedly, confirm.Just to the abundant check of PLC and application software thereof.
10. the debugging of process control computer
(1) preparation before the computer system debugging
1. grasp the technological process of production and each equipment performance and control principle.
2. confirm that model, specification, the quantity of erecting equipment should be correct, visual inspection is normal.
3. each communication cable lays, and connection is finished.
4. ground path adheres to specification, and protective ground, working grounding, shield earthing meet the requirements.
5. ups power can works better.
(2) network hardware checkout
1. press design paper and implement parameter setting.
2. peripherals, operator's console, man-machine dialogue workstation all adhere to specification, and can come into operation.
3. after system send electricity, hardware device is carried out autodiagnosis.
4. check whether inter-net communication is unimpeded, whether data message transmits correct, checks affirmation on each point of network.
(3) application software debugging (cold conditions is zero load)
1. start computer after the application software of packing into and carry out autodiagnosis, inspection.
2. check the communication situation of computer and PLC.
A. simulated data transmits and produces instruction;
B. assign the collection of the production program and production actual achievement;
C. simulate unit production and fault information collection;
D. printing and the picture of checking these analog informations show.
3. check to the running condition of process control computer and with the coordinated operation situation of PLC according to simulated data, and check material tracking, failure message, report printing etc.
Claims (1)
1. dry coke quenching Electrified Transmission and Controlling System electric debugging method; carry out successively as follows: a. commissioning staff enters; b. equipment general inspection; c. cable line check and correction; d. electrical appliance test; e. system protection device single test and adjusting; f. RHVC debugging; the test of g.PLC interface; h. process control computer debugging; i. system's blank operation test; j. power Control Center tables of equipment examination; k. band machinery debugging; 1.PLC control system debug down; m. zero load interlock trial trip and n. trial production; f. the RHVC debugging comprises the inspection to installation situation and frequency control motor; the debugging of variable frequency regulating speed control equipment; system's blank operation test; speed control by frequency variation debugging and the examination of power Control Center tables of equipment is characterized in that:
B. during the equipment general inspection, equipment is carried out visual inspection, confirms not damaged, no Short Item, check each equipment first and second wiring integrity and arrange in order, connector lug is fastening well and mark, the insulation of monitoring device,
D. in electrical appliance when test,, direct current resistance between the dc resistance of its each phase winding or line is measured in test motor and loop insulation,
When j. the power Control Center tables of equipment tried, the insulating resistance value of measuring low-voltage apparatus and secondary circuits was not less than 0.5M Ω,
When f. RHVC was debugged, break(ing)-in-period was 2 hours,
During the test of g.PLC interface, after system send electricity, hardware device is carried out autodiagnosis, and the I/O interface of inspection PLC system, on-the-spot all devices is carried out analog D I, AI, IP input signal, on the PLC System Monitor, check and confirm address and signal, on the PLC System Monitor, force output DO, AO, PO signal, carry out the affirmation of signal at the scene, after confirming to finish, the application software of packing into, carry out software rejuvenation, parameter setting carries out the data communication test between each PLC
H. the process control computer debugging comprises the application software debugging under network hardware checkout and the cold conditions no load condition, during network hardware checkout, after system send electricity, hardware device is carried out autodiagnosis, and check whether inter-net communication is unimpeded, whether data message transmits correct, on each point of network, check affirmation, when the application software under the cold conditions no load condition is debugged, after the application software of packing into, start computer and carry out autodiagnosis, inspection, and the communication situation of inspection computer and PLC, simulated data transmits and produces instruction; Assign the collection of the production program and production actual achievement; Simulation unit production and fault information collection; Printing and the picture of checking these analog informations show, check to the running condition of process control computer and with the coordinated operation situation of PLC according to simulated data at last, and check material tracking, failure message, report printing;
During m. zero load interlock trial trip, confirm motor and system wiring is errorless and the good situation that insulate under, disconnect the catcher that is connected between electric motor and the mechanical means, manual jiggering, operated motor is measured the empty load of motor electric current, and is performed record then, motor idle running 2 hours to 4 hours, record electric machine temperature rise and bearing temperature rise.
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| CN104238541A (en) * | 2013-06-20 | 2014-12-24 | 五冶集团上海有限公司 | Method for debugging benzene hydrogenation engineering electric drive and control system |
| CN112129555A (en) * | 2020-09-04 | 2020-12-25 | 常州今创风挡系统有限公司 | Windshield system testing method |
| CN113759814A (en) * | 2021-08-02 | 2021-12-07 | 上海二十冶建设有限公司 | Step-by-step debugging method for tundish car electrical system of continuous casting machine |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200955955Y (en) * | 2006-10-12 | 2007-10-03 | 武汉钢铁(集团)公司 | Dry quenched coke tank bias detecting device |
-
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200955955Y (en) * | 2006-10-12 | 2007-10-03 | 武汉钢铁(集团)公司 | Dry quenched coke tank bias detecting device |
Non-Patent Citations (7)
| Title |
|---|
| JP特开2005-272500A 2005.10.06 |
| PLC与变频器在干熄焦电机车自动控制系统的应用;汪德才等;《冶金动力》;20041231(第5期);69-71 * |
| 宝钢三期干熄焦系统设备的电气调试;聂未等;《四川建筑》;20031231;第23卷;208-209 * |
| 干熄焦电气控制系统的优化;海泉等;《四川冶金》;20090430;第31卷(第2期);50-56 * |
| 汪德才等.PLC与变频器在干熄焦电机车自动控制系统的应用.《冶金动力》.2004,(第5期),69-71. |
| 海泉等.干熄焦电气控制系统的优化.《四川冶金》.2009,第31卷(第2期), |
| 聂未等.宝钢三期干熄焦系统设备的电气调试.《四川建筑》.2003,第23卷 |
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