CN110564430B - Auxiliary tool for overhauling fixed cup of coke oven and overhauling method based on auxiliary tool - Google Patents
Auxiliary tool for overhauling fixed cup of coke oven and overhauling method based on auxiliary tool Download PDFInfo
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- CN110564430B CN110564430B CN201910935826.XA CN201910935826A CN110564430B CN 110564430 B CN110564430 B CN 110564430B CN 201910935826 A CN201910935826 A CN 201910935826A CN 110564430 B CN110564430 B CN 110564430B
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- fixed cup
- blind plate
- overhauling
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- 239000000571 coke Substances 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000001174 ascending effect Effects 0.000 claims abstract description 32
- 238000012423 maintenance Methods 0.000 claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 14
- 230000007246 mechanism Effects 0.000 claims description 12
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000000903 blocking effect Effects 0.000 claims description 8
- 238000003763 carbonization Methods 0.000 claims description 8
- 239000003245 coal Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 5
- 230000008439 repair process Effects 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002023 wood Substances 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000000835 fiber Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 2
- 230000000630 rising effect Effects 0.000 claims 1
- 238000007689 inspection Methods 0.000 abstract description 6
- 239000003034 coal gas Substances 0.000 abstract description 2
- 101150038956 cup-4 gene Proteins 0.000 description 39
- 239000007789 gas Substances 0.000 description 28
- 230000001276 controlling effect Effects 0.000 description 10
- 238000004939 coking Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
Classifications
-
- 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
- C10B27/06—Conduit details, e.g. valves
-
- 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
- C10B29/00—Other details of coke ovens
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Coke Industry (AREA)
Abstract
The invention relates to the field of inspection tools, in particular to an auxiliary tool for overhauling a fixed cup of a coke oven and an overhauling method based on the auxiliary tool, wherein the auxiliary tool comprises three overhauling blind plates; the three overhauling blind plates are respectively a first blind plate for plugging the joint of the ascending pipe and the bridge pipe, a second blind plate for plugging the joint of the bridge pipe and the fixed cup seat and a third blind plate for plugging the end part of the gas collecting pipe. The invention discloses an auxiliary tool for overhauling a fixed cup of a coke oven, which reduces the dangerous degree of overhauling a cup valve fixed cup of a system of a coke oven PROven through the arrangement of the auxiliary tool; through appurtenance and maintenance method based on appurtenance, guaranteed PROven system cup valve fixed cup maintenance's security, still solved the problem that excessive coal gas overflowed when PROven system cup valve fixed cup was dismantled simultaneously.
Description
Technical Field
The invention relates to the field of inspection tools, in particular to an auxiliary tool for overhauling a fixed cup of a coke oven and an overhauling method based on the auxiliary tool.
Background
The PRoven system is a key technology for controlling the pressure of a single coking chamber adopted by a German UHDE company for coke ovens with the size of more than 7 meters, and the control mode is to realize the pressure control of the coking whole process of the coking chamber by adjusting the opening of a gas collecting pipe and a raw gas channel of the coking chamber through the lifting of a cup valve, so that the safety of an unorganized diffusion and gas output system of the coke oven is very important.
In recent years, most domestic 7.63 m coke ovens using the system find that the cup valve is loosened and the adjustment fails in the up-down adjustment process of the fixed cup fixing screw after running for a period of time.
The problem can lead to long-term negative pressure of the carbonization chamber, air is sucked into the gas collecting tube, so that the oxygen content of gas is high, and meanwhile, the air and the gas are mixed and burnt at the position of the ascending tube to damage ascending tube equipment. In extreme cases, if the screw rod of the fixed cup falls off completely, the screw rod can fall into the gas collecting tube, so that a gas-water channel is blocked, the production operation is endangered, and the production and maintenance are required to be immediately organized.
When the fixed cup is replaced and overhauled, the pressure of the gas collecting tube is difficult to control, and after the bridge tube or the fixed cup seat is disassembled, the risk that gas escapes or a large amount of air is sucked is controlled improperly; meanwhile, the construction site is narrow, the hoisting and dismounting workload is large, and the overhaul process is complex.
Therefore, in order to solve the above problems, an auxiliary tool for facilitating the maintenance of the fixed cup of the coke oven PRoven system is needed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an auxiliary tool for facilitating overhaul of a fixed cup of a coke oven PRoven system.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
An auxiliary tool for overhauling a fixed cup of a coke oven, which comprises three overhauling blind plates; the three overhauling blind plates are respectively a first blind plate for plugging the joint of the ascending pipe and the bridge pipe, a second blind plate for plugging the joint of the bridge pipe and the fixed cup seat and a third blind plate for plugging the end part of the gas collecting pipe.
The first blind plate is a steel plate, and the second blind plate and the third blind plate are wood plates; the third blind plate diameter is greater than the second blind plate diameter.
The overhaul blind plate comprises an overhaul blind plate body, wherein the overhaul blind plate body comprises an outer side plate and a central plate, and the outer side plate and the central plate are coaxially arranged; the outer side plate is movably connected with the central plate.
And the outer side surface of the central plate is provided with a high-temperature-resistant rubber sealing ring for sealing.
A limiting groove is formed in the outer side plate; the limiting groove is communicated with the outer side of the outer side plate; the limiting groove is an arc-shaped groove.
The overhaul blind plate is connected with a driving mechanism for driving the overhaul blind plate to move; the driving mechanism comprises a first driving cylinder and a second driving cylinder; a piston rod of the first driving cylinder is connected with the outer side surface of the outer side plate; and a piston rod of the second driving cylinder is connected with the central plate.
The auxiliary tool further comprises a bridge pipe overhauling table for placing the bridge pipe, the bridge pipe overhauling table comprises a supporting frame, a supporting workbench is arranged on the supporting frame, and a placing disc is arranged on the supporting workbench; a placing groove for placing the tray is formed in the supporting workbench; the placing plate is connected with a driving motor for controlling the rotation of the placing plate.
The auxiliary tool also comprises a fixed cup maintenance platform for placing the fixed cup and a fixed cup seat; the fixed cup overhaul stand comprises three supporting frames, and the three supporting frames are distributed in an equilateral triangle; the upper ends of the three support frames are connected through a working flat plate, and a placing table is arranged on the working flat plate; the placing table is connected with the working flat plate.
The placing table is provided with a plurality of fixing threaded holes for simulating the assembly state of the fixing cup; the placing table is connected with the working flat plate through a rotating shaft; a locking mechanism for locking the placing table is arranged between the working flat plate and the placing table.
The invention has the advantages that:
The invention discloses an auxiliary tool for overhauling a fixed cup of a coke oven, which reduces the dangerous degree of overhauling a cup valve fixed cup of a system of a coke oven PROven through the arrangement of the auxiliary tool; through appurtenance and maintenance method based on appurtenance, guaranteed PROven system cup valve fixed cup maintenance's security, still solved the problem that excessive coal gas overflowed when PROven system cup valve fixed cup was dismantled simultaneously.
Drawings
The following is a brief description of what is expressed in the various figures of the specification of the invention:
fig. 1 is a schematic diagram of key components of a coke oven raw gas export control PROven system. ;
FIG. 2 is a disassembled view of key parts of the coke oven raw gas export control PROven system maintenance;
Fig. 3 is a front view of the bridge pipe inspection bench of the present invention.
Fig. 4 is a top view of the bridge pipe inspection table of the present invention.
Fig. 5 is a top view of a fixed cup access table of the present invention.
Fig. 6 is a front view of the bridge pipe inspection bench of the present invention.
FIG. 7 is a schematic view of the structure of the optimized access panel of the present invention.
FIG. 8 is a schematic view of the structure of the optimized access panel of the present invention when connected to a driving mechanism.
Detailed Description
The following detailed description of the invention refers to the accompanying drawings, which illustrate preferred embodiments of the invention in further detail.
An auxiliary tool for overhauling a coke oven fixing cup 4, which comprises three overhauling blind plates; the three overhaul blind plates are respectively a first blind plate 6 for plugging the joint of the ascending pipe straight pipe 1 and the bridge pipe 2, a second blind plate 7 for plugging the joint of the bridge pipe 2 and the fixed cup holder 3 and a third blind plate 8 for plugging the end part of the gas collecting pipe; the invention discloses an auxiliary tool for overhauling a coke oven fixed cup 4, which reduces the dangerous degree of overhauling a coke oven PROven system cup valve fixed cup 4 through the arrangement of the auxiliary tool; through setting up of overhaul blind plate, guaranteed PROven system cup valve fixed cup 4 overhaul's security, solved the excessive gas problem that overflows when PROven system cup valve fixed cup 4 dismantles.
Preferably, in the present invention, the first blind plate 6 is a steel plate, and the second blind plate 7 and the third blind plate 8 are wood plates; the diameter of the third blind plate 8 is larger than that of the second blind plate 7; the first blind plate 6 is arranged to be too high in temperature, so that the first blind plate 6 is a steel plate, and damage to the first blind plate 6 caused by high temperature is avoided; in addition, the second blind plate 7 and the third blind plate 8 are wood plates, so that the cost is reduced, the weight of the overhaul blind plate is reduced, the operation strength of an operator is reduced, and the sizes of the three overhaul blind plates are required to be set according to actual requirements.
Preferably, the overhaul blind plate comprises an overhaul blind plate body, wherein the overhaul blind plate body comprises an outer side plate 6-1 and a central plate 6-2, and the outer side plate 6-1 and the central plate 6-2 are coaxially arranged; the outer side plate 6-1 is movably connected with the central plate 6-2; the outer side plate 6-1 plays a main role in connection, and the outer side plate 6-1 is provided with a plurality of connection holes which can be connected with adjacent parts through bolts; meanwhile, as preferable, in the invention, the central plate 6-2 is movably connected with the outer side plate 6-1, the outer side plate 6-1 is provided with a placing hole, and the central plate 6-2 is placed in the placing hole; the outer side surface of the central plate 6-2 is provided with a guide rail strip 6-3, the inner wall of the placement hole is provided with a guide rail groove, and the guide rail groove is matched with the guide rail strip 6-3; when the overhaul blind plates are attached to the corresponding placement positions, the central plates 6-2 are pushed to enable the central plates 6-2 to move relatively to the outer side plates 6-1, the central plates 6-2 are inserted into corresponding pipelines, and the arrangement plays a better sealing role to prevent the blocked pipelines from leaking.
Preferably, the outer side surface of the central plate 6-2 is provided with a high-temperature-resistant rubber sealing ring for sealing; the high-temperature-resistant rubber sealing ring plays a sealing role.
Preferably, the outer side plate 6-1 is provided with a limit groove 6-4; the limiting groove 6-4 is communicated with the outer side of the outer side plate 6-1; the limiting groove 6-4 is an arc-shaped groove; the limiting groove 6-4 plays a role of avoiding, because the invention is of a circular tube structure no matter the ascending tube straight tube 1, the bridge tube 2 and the gas collecting tube, when adjacent components are disassembled, in order to reduce the overflow of gas in the channel, the overhaul blind plate is required to be quickly moved to a set position; the setting of the limit groove 6-4 can realize the movement of the overhaul blind plate to the set position more quickly, and the first blind plate 6 is taken as an example for the sake of clarity to describe the above-mentioned view; the first blind plate 6 is arranged at the joint of the ascending pipe straight pipe 1 and the bridge pipe 2, and when the ascending pipe straight pipe is used, the limiting groove 6-4 is clamped at the end part of the bridge pipe 2, the inner side surface of the first blind plate 6 is attached to the end part of the joint of the ascending pipe straight pipe 1, after the bridge pipe 2 is disassembled, the bridge pipe 2 is separated through a lifting appliance, and the first blind plate 6 is quickly pushed to move upwards in the moving process of the bridge pipe 2, so that the first blind plate 6 can reach a set position more quickly, and the overflow and the dispersion of high-temperature smoke and flame in the ascending pipe straight pipe 1 are reduced; the second blind plate 7 and the third blind plate 8 are similar to the first blind plate 6 in use process, but the use directions are different, and in addition, the attaching position of the overhaul blind plate is attached to a component which is in the original position after disassembly, for example, the first blind plate 6 is attached to the end part of the interface of the ascending tube straight tube 1, and the second blind plate 7 is attached to the outer side surface of the fixed cup holder 3; the third blind plate 8 is attached to the end part of the gas collecting tube; in summary, the main purpose of the limiting groove 6-4 is to better achieve a fast in-place repair of the blind plate.
Preferably, the overhaul blind plate is connected with a driving mechanism for driving the overhaul blind plate to move; the driving mechanism comprises a first driving cylinder 6-5 and a second driving cylinder 6-6; the piston rod of the first driving cylinder 6-5 is connected with the outer side surface of the outer side plate 6-1; the piston rod of the second driving cylinder 6-6 is connected with the central plate 6-2; the setting of the driving mechanism enables the overhaul blind plate to move to the set position without manpower, reduces the use of manpower, is used as larger optimization, and can avoid the fixation of the outer side plate 6-1 through an external fixing part by the setting of the extrusion cylinder 6-7 because the extrusion cylinder 6-7 is connected with the outer side plate 6-1; according to the invention, the first driving air cylinder 6-5 is used for pushing the overhaul blind plate to the set position, and the second driving air cylinder 6-6 is used for pushing the central plate 6-2 into the adjacent holes or the pipelines, so that the sealing of the holes of the pipelines is realized, the leakage of smoke is avoided, and a good blocking effect is realized.
Preferably, the auxiliary tool further comprises a bridge pipe overhauling table 11 for placing the bridge pipe 2, wherein the bridge pipe overhauling table 11 comprises a supporting frame 111, a supporting workbench is arranged on the supporting frame 111, and a placing disc 112 is arranged on the supporting workbench; a placing groove for placing the placing tray 112 is formed in the supporting workbench; the placing plate 112 is connected with a driving motor 113 for controlling the placing plate 112 to rotate; the support frame 111 and the support workbench can be used for disassembling the rear axle tube 2 and placing related parts thereof; in addition, as larger optimization, the placing plate 112 plays a role in placing the bridge pipe 2, the placing plate 112 is connected with the driving motor 113, the driving motor 113 drives the placing plate 112 to rotate, the maintenance of the rear bridge pipe 2 is convenient to detach, and an operator is prevented from rotating around the bridge pipe maintenance platform 11 to realize the detection of the circumferential direction of the bridge pipe 2; the labor intensity of operators is reduced.
Preferably, the auxiliary tool further comprises a fixed cup maintenance platform 12 for placing the fixed cup 4 and the fixed cup seat 3; the fixed cup maintenance platform 12 comprises three supporting frames 121, and the three supporting frames 121 are distributed in an equilateral triangle shape; the upper ends of the three supporting frames 121 are connected through a working flat plate 126, and a placing table 122 is arranged on the working flat plate 126; the placement stage 122 is connected with a work plate 126; the fixed cup maintenance table 12 facilitates the placement of the fixed cup 4 and related parts thereof, and because the fixed cup 4 is relatively small in size, in order to realize the rotation inspection of the fixed cup 4, the placement table 122 is connected with the working flat plate 126 through the rotation shaft 125, so that the placement table 122 can rotate, thereby driving the fixed cup 4 to rotate, and facilitating the observation of operators; the rotation is realized by manually rotating the placing table 122, and because the invention mainly detects the fixed cup 4, and informs the rotation of the fixed cup 4 by manpower, the control of the rotation angle of the fixed cup 4 can be realized more conveniently according to the need, and the invention is more convenient to use in practice.
Preferably, the placement table 122 is provided with a plurality of fixing threaded holes 124 for simulating the assembly state of the fixing cup 4; by connecting the screw 5 on the fixed cup 4 with the fixing threaded hole 124 on the placing table 122, the device can be used for detecting the working state of the screw 5 on the fixed cup 4 and can also play a role in fixing the fixed cup 4; in addition, in order to avoid the continuous rotation of the placement platform 122 from influencing the detection of the fixed cup 4, the placement platform 122 is connected with the working plate 126 through a rotation shaft; a locking mechanism for locking the placing table 122 is arranged between the working plate 126 and the placing table 122; the locking mechanism can be the cooperation mode of hasp and locking claw, also can be the bolt, and the bolt is comparatively simple, is equipped with first bolt hole 123 on placing the platform 122 promptly, sets up the second bolt hole on work flat board 126, and bolt 127 passes first bolt hole 123 and second bolt hole simultaneously and realizes placing the fixed of platform 122.
Based on the foregoing, the present invention is described in detail below in conjunction with various components for understanding:
the invention overhauls the blind plate position and the application.
As shown in the attached drawings, the disassembly steps of the cup valve and the fixed cup 4 of the coke oven bridge pipe 2 are as follows:
step 1: a first blind plate 6 is inserted into the joint between the ascending pipe straight pipe 1 and the bridge pipe 2; the device is used for shielding high-temperature smoke and fire sources of the ascending pipe straight pipe 1;
Step 2: after the bridge pipe 2 is moved out, a second blind plate 7 is quickly covered on the upper position of the fixed cup seat 3 to block the hole left after the bridge pipe 2 is moved away, so that a large amount of air is prevented from being sucked or sparks are prevented from falling into the gas collecting tube;
Step 3: disassembling the fixed cup 4 and the fixed cup holder 3; when the fixing cup 4 and the connecting part are moved out, a third blind plate 8 is covered on the end part of the upper end of the gas collecting tube and used for blocking holes left by the base after the fixing cup 4 is lifted off, so that a large amount of air is prevented from being sucked or a Mars is prevented from falling into the gas collecting tube.
A bridge pipe overhauling table 11; the bridge pipe overhauling table 11 is used for placing the bridge pipe 2 and related component cup valves when the bridge pipe 2 and related component cup valves are disassembled and hoisted, so that overhauling and maintenance operations are facilitated, and the main materials of the bridge pipe overhauling table 11 are 60# I-steel and 60# angle steel.
The fixed cup 4 is in an overhauling state: when the fixed cup 4 and the cup seat are disassembled and hoisted, the fixed cup is placed on the fixed cup maintenance platform 12, and the main materials of the fixed cup maintenance platform are formed by assembling 60# I-steel and 60# angle steel.
An overhaul method for overhaul auxiliary tools based on a coke oven PRoven system fixed cup 4 comprises the following steps:
Step 1: controlling high-temperature airflow of the carbonization chamber; and opening a third coal charging port cover of the check and repair furnace number carbonization chamber, inserting the third coal charging port cover into the ascending pipe straight pipe 1 by using a power air pipe, and pressing to prevent flames of the ascending pipe straight pipe 1.
Step 2: clearing and overhauling peripheral barriers; removing each frame and the pavement screen plate on the bridge pipe 2, and disconnecting the connecting bolts of the bridge pipe 2 and the ascending pipe straight pipe 1; dismantling a power line (marked by a line source), an air source pipeline, a large ammonia water pipe 10, a small ammonia water pipe 10, a circulating water pipe, a valve positioner, a pressure transmitter, a lifting pipe straight pipe 1 cup valve control cylinder and the like.
Step 3: dismantling the bridge pipe 2; controlling the pressure of the gas collecting tube of the overhaul section to be 0 to-50 Pa; a 50-ton crane is in place, slowly lifts out the bridge pipe 2 to be disassembled, and rapidly plugs the first blind plate 6 at the joint of the ascending pipe straight pipe 1 and the bridge pipe 2; meanwhile, when the bridge pipe 2 is separated, the second blind plate 7 is moved to the joint of the lower end of the bridge pipe 2 and the fixed cup holder 3 and used for plugging a hole at the upper part of the fixed cup holder 3 after the bridge pipe 2 is lifted out;
step 4: dismantling the fixed cup 4 and the base; after the fixed cup holder 3 and the fixed cup 4 are transferred, a third blind plate 8 is immediately used for blocking a hole at the upper end of the gas collecting tube, and a ceramic fiber blanket is covered on the blind plate for further sealing; the disassembly of the fixed cup 4 and the related components is completed;
step 5: and (3) repairing and replacing the detached fixed cup 4, the related components, the bridge pipe 2 and the related components.
The upper part is the step of disassembling the fixed cup 4, and the complete overhaul method of the invention comprises the following steps:
Step 1: controlling high-temperature airflow of the carbonization chamber; pushing the maintenance furnace number to empty before 1 hour, controlling the temperature of combustion chambers at two sides of the carbonization chamber to 1230+/-20 ℃ and controlling the pressure of a gas collecting pipe of a maintenance section to be 0-50 Pa; opening a third coal charging port cover of the check and repair furnace number carbonization chamber, inserting the third coal charging port cover into the ascending pipe straight pipe 1 by using a power air pipe, and pressing to prevent flame of the ascending pipe straight pipe 1;
Step 2: clearing and overhauling peripheral barriers; removing each frame and the pavement screen plate on the bridge pipe 2, and disconnecting the connecting bolts of the bridge pipe 2 and the ascending pipe straight pipe 1; dismantling a power line (marked by a line source), an air source pipeline, a large ammonia water pipe, a small ammonia water pipe, a circulating water pipe, a valve positioner, a pressure transmitter, a lifting pipe straight pipe 1 cup valve control cylinder and the like.
Step 3: dismantling the bridge pipe 2; controlling the pressure of the gas collecting tube of the overhaul section to be 0 to-50 Pa; the 50 ton crane is in place, the bridge pipe 2 to be disassembled is slowly lifted out, and after the bridge pipe 2 is separated from the ascending pipe straight pipe 1, the first blind plate 6 is quickly moved to the joint of the ascending pipe straight pipe 1 and the bridge pipe 2, which is the same as the blocking of the joint of the ascending pipe straight pipe 1 and the bridge pipe 2, and is used for blocking high-temperature smoke and fire source in the ascending pipe straight pipe 1 from overflowing; meanwhile, when the bridge pipe 2 is separated, the second blind plate 7 is moved to the joint of the lower end of the bridge pipe 2 and the fixed cup holder 3 and used for plugging a hole at the upper part of the fixed cup holder 3 after the bridge pipe 2 is lifted out; the lifted bridge pipe 2 is placed on the bridge pipe overhauling table 11 for overhauling, if the overhauling progress is saved, a new bridge pipe 2 cup valve spare part can be newly assembled and placed on the bridge pipe overhauling table 11 in advance, so that the subsequent replacement is convenient;
step 4: dismantling the fixed cup 4 and the cup holder; when the fixed cup 4 and the cup seat are removed, the fixed parts on the respective parts are removed firstly, after the removal is completed, the second blind plate 7 is removed, and the skewed fixed cup 4 is hooked by a hook for alignment; fixing a fixed cup 4 on a cup seat by 3 phi 16 steel bar lifting hooks which are manufactured in advance, slowly lifting out the cup seat and the fixed cup 4, using a third blind plate 8 to seal a hole at the upper end of a gas collecting tube, and covering a ceramic fiber blanket on the blind plate for further sealing; simultaneously, the suspended cup seat and the fixed cup 4 are placed on the fixed cup maintenance table 12 for maintenance;
Step 4: cleaning the flange surface of the gas collecting tube; in order to ensure the tightness of the flange surface of the cup seat, a copper tool is used for cleaning the flange surface before the fixed cup 4 is assembled;
Step 5: the valve seat and the bridge pipe 2 are assembled; after the treatment and maintenance of the fixed cup 4 and the fixed cup holder 3 are finished, controlling the suction force of the gas collecting tube to be 0 to-50 Pa again, removing a third blind plate 8 blind plate, quickly reloading the fixed cup 4 and the cup holder, then covering the upper end of the cup holder with a second blind plate 7, continuously keeping the micro negative pressure of the gas collecting tube, removing the blind plate 7 of the second blind plate, quickly reloading the upper end of the cup holder with a bridge tube 2, and filling sealing materials such as asbestos ropes, asphalt, jin Kuangfen and the like with the diameter of 40mm in a socket at the root part of the bridge tube 2;
Step 6: recovering ammonia water and electric instrument facilities; restoring the ammonia water pipeline connection, and injecting ammonia water for sealing; after the operation is finished, the first blind plate 6 is moved, the bridge pipe 2 is connected with the ascending pipe straight pipe 1, the connecting bolt is fastened, the instrument and the meter are assembled, power transmission and air supply are carried out, and PROven system debugging is carried out;
step 7: production recovery; after the cup valve is confirmed to be regulated normally, coal charging production is arranged; so far, the whole overhaul work is completed.
It is obvious that the specific implementation of the present invention is not limited by the above-mentioned modes, and that it is within the scope of protection of the present invention only to adopt various insubstantial modifications made by the method conception and technical scheme of the present invention.
Claims (6)
1. An auxiliary tool for overhauling a fixed cup of a coke oven is characterized in that the auxiliary tool comprises three overhauling blind plates; the three overhaul blind plates are respectively a first blind plate for blocking the joint of the ascending pipe and the bridge pipe, a second blind plate for blocking the joint of the bridge pipe and the fixed cup seat and a third blind plate for blocking the end part of the gas collecting pipe;
The overhaul blind plate comprises an overhaul blind plate body, wherein the overhaul blind plate body comprises an outer side plate and a central plate, and the outer side plate and the central plate are coaxially arranged; the outer side plate is movably connected with the central plate;
A limiting groove is formed in the outer side plate; the limiting groove is communicated with the outer side of the outer side plate; the limiting groove is an arc-shaped groove;
The outer side surface of the central plate is provided with a high-temperature-resistant rubber sealing ring for sealing;
The overhaul blind plate is connected with a driving mechanism for driving the overhaul blind plate to move; the driving mechanism comprises a first driving cylinder and a second driving cylinder; a piston rod of the first driving cylinder is connected with the outer side surface of the outer side plate; a piston rod of the second driving cylinder is connected with the central plate;
When in use;
The limiting groove is clamped at the end part of the bridge pipe, and the inner side surface of the first blind plate is attached to the end part of the straight pipe joint of the ascending pipe;
After the bridge pipe is disassembled, the bridge pipe is adjusted away through the lifting appliance, and the first blind plate is rapidly pushed to move upwards in the moving process of the bridge pipe, so that the first blind plate can reach a set position more rapidly, and the overflow and the dispersion of high-temperature smoke and flame in the ascending pipe straight pipe are reduced.
2. The auxiliary tool for overhauling a fixed cup of a coke oven according to claim 1, wherein the first blind plate is a steel plate, and the second blind plate and the third blind plate are wood plates; the diameter of the third blind plate is larger than that of the second blind plate.
3. The auxiliary tool for overhauling a fixed cup of a coke oven according to claim 1, wherein the auxiliary tool further comprises a bridge pipe overhauling table for placing a bridge pipe, the bridge pipe overhauling table comprises a supporting frame, a supporting workbench is arranged on the supporting frame, and a placing disc is arranged on the supporting workbench; a placing groove for placing the tray is formed in the supporting workbench; the placing plate is connected with a driving motor for controlling the rotation of the placing plate.
4. The coke oven fixed cup maintenance aid of claim 1, further comprising a fixed cup maintenance platform for placement of the fixed cup and the fixed cup holder; the fixed cup overhaul stand comprises three supporting frames, and the three supporting frames are distributed in an equilateral triangle; the upper ends of the three support frames are connected through a working flat plate, and a placing table is arranged on the working flat plate; the placing table is connected with the working flat plate.
5. The auxiliary tool for overhauling the fixed cup of the coke oven according to claim 4, wherein a plurality of fixed threaded holes for simulating the assembly state of the fixed cup are formed on the placing table; the placing table is connected with the working flat plate through a rotating shaft; a locking mechanism for locking the placing table is arranged between the working flat plate and the placing table.
6. A method for servicing a coke oven retaining cup service aid according to any one of claims 1-5, characterized in that the service method comprises the steps of:
Step 1: controlling high-temperature airflow of the carbonization chamber; opening a third coal charging port cover of the check and repair furnace number carbonization chamber, inserting the third coal charging port cover into the ascending pipe by using a power air pipe, and pressing to prevent flame of the ascending pipe;
Step 2: clearing and overhauling peripheral barriers; removing each frame and the pavement screen plate on the bridge pipe, and disconnecting the connecting bolts of the bridge pipe and the ascending pipe; dismantling a power line, an air source pipeline, a large ammonia water pipe, a small ammonia water pipe, a circulating water pipe, a valve positioner, a pressure transmitter and a rising pipe cup valve control cylinder;
Step 3: dismantling the bridge pipe; controlling the pressure of the gas collecting tube of the overhaul section to be 0 to 50Pa; a 50-ton crane is in place, a bridge pipe to be disassembled is slowly lifted out, and a first blind plate is quickly plugged at the joint of a straight pipe of the ascending pipe and the bridge pipe; simultaneously, when the bridge pipe is lifted off, the second blind plate is moved to the joint of the lower end of the bridge pipe and the fixed cup seat and used for plugging a hole at the upper part of the fixed cup seat after the bridge pipe is lifted out;
Step 4: dismantling the fixed cup and the base; after the fixed cup seat and the fixed cup are transferred, a third blind plate is immediately used for plugging a hole at the upper end of the gas collecting tube, and a ceramic fiber blanket is covered on the blind plate for further sealing; the disassembly of the fixed cup and related components is completed;
Step 5: and (3) maintaining and replacing the detached fixed cup, the related components, the bridge pipe and the related components.
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| CN201910935826.XA CN110564430B (en) | 2019-09-29 | 2019-09-29 | Auxiliary tool for overhauling fixed cup of coke oven and overhauling method based on auxiliary tool |
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| CN201910935826.XA CN110564430B (en) | 2019-09-29 | 2019-09-29 | Auxiliary tool for overhauling fixed cup of coke oven and overhauling method based on auxiliary tool |
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| CN210656793U (en) * | 2019-09-29 | 2020-06-02 | 马鞍山钢铁股份有限公司 | Coke oven fixing cup overhauls appurtenance |
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| DE4321676C2 (en) * | 1992-07-14 | 1995-11-16 | Bergwerksverband Gmbh | Method and device for regulating the gas pressure of a coke oven chamber |
| US20030056843A1 (en) * | 2001-05-01 | 2003-03-27 | H.B. Carey | Pipe line blind |
| GB2381301B (en) * | 2001-10-23 | 2005-01-12 | Textron Fastening Syst Ltd | Sealing plug for blind installation |
| CN201934851U (en) * | 2011-03-04 | 2011-08-17 | 徐桂芬 | Plugging connector for pipeline |
| CN202733317U (en) * | 2012-07-09 | 2013-02-13 | 核动力运行研究所 | High water blocking board of primary side main connecting pipe of steam generator |
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