CN114752402B - Inspection port opening and closing mechanism for catalytic cracking furnace - Google Patents
Inspection port opening and closing mechanism for catalytic cracking furnace Download PDFInfo
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- CN114752402B CN114752402B CN202210259199.4A CN202210259199A CN114752402B CN 114752402 B CN114752402 B CN 114752402B CN 202210259199 A CN202210259199 A CN 202210259199A CN 114752402 B CN114752402 B CN 114752402B
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G9/00—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils
- C10G9/14—Thermal non-catalytic cracking, in the absence of hydrogen, of hydrocarbon oils in pipes or coils with or without auxiliary means, e.g. digesters, soaking drums, expansion means
- C10G9/18—Apparatus
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C4/00—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms
- C07C4/02—Preparation of hydrocarbons from hydrocarbons containing a larger number of carbon atoms by cracking a single hydrocarbon or a mixture of individually defined hydrocarbons or a normally gaseous hydrocarbon fraction
- C07C4/04—Thermal processes
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention relates to the technical field of chemical production equipment, in particular to an inspection opening and closing mechanism for a catalytic cracking furnace, which comprises an inspection opening, a fixed assembly frame body, an inner refractory brick and an outer refractory brick, wherein the inspection opening is formed in the outer side wall of the catalytic cracking furnace. The invention relates to an inspection port opening and closing mechanism for a catalytic cracking furnace, which consists of a fixed assembly frame body arranged on the inner side wall of an inspection port, inner refractory bricks, a lateral assembly seat arranged on the outer side of the fixed assembly frame body, an outer overturning control arm movably assembled on the outer side of the lateral assembly seat and an outer refractory brick arranged at the closed end of the outer overturning control arm, wherein the inner refractory bricks and the outer refractory bricks are in extrusion fit, so that the tightness of the inspection port is ensured and the safety of the inspection port is improved; the external overturning control arm is extruded and assembled with the first elastic limiting block and the second elastic limiting block respectively by utilizing the longitudinal assembly frame of the connecting end, and can be locked and limited at multiple angles to the position of the external overturning control arm, so that the adjustment and control are convenient.
Description
Technical Field
The invention relates to the technical field of chemical production equipment, in particular to an inspection opening and closing mechanism for a catalytic cracking furnace.
Background
The ethylene cracking furnace is used for processing cracking gas and comprises a double radiation chamber, a single radiation chamber and a millisecond furnace. The ethylene cracking furnace is the core equipment of ethylene production equipment, and has the main functions of processing various raw materials such as natural gas, refinery gas, crude oil, naphtha and the like into cracking gas, providing the cracking gas for other ethylene equipment and finally processing the cracking gas into ethylene, propylene and various byproducts. The production capacity and the technology of the ethylene cracking furnace directly determine the production scale, the yield and the product quality of the whole set of ethylene equipment, so that the ethylene cracking furnace plays a role of a tap in the ethylene production equipment and even the whole set of petrochemical production.
The ethylene cracking furnace is divided into a convection section and a radiation section. Generally, the convection section functions to recover flue gas waste heat for preheating and vaporizing the feedstock and superheating the feedstock and dilution steam to the cross-over temperature of the material, with the remaining heat being used to superheat the ultra-high pressure steam and preheat boiler feed water. In the process of preheating and vaporizing the raw materials, dilution steam is injected to reduce the vaporization temperature of the raw materials and prevent the raw materials from coking in the vaporization process. Each group of coils in the convection section of the cracking furnace is mainly formed by welding heat exchange furnace tubes (light tubes or finned tubes) through return bends, end tube plates and middle tube plates support the furnace tubes, and inlets and outlets of some coils are collected together through a header. The periphery of each coil is assembled on the upper furnace wall to form a module.
The ethylene cracking furnace can be technically divided into a double radiation chamber, a single radiation chamber and a millisecond furnace. The furnace type can be classified into a CBL cracking furnace, an SRT cracking furnace, a USC cracking furnace, a KTI GK cracking furnace, a millisecond cracking furnace and a Pyrocrack cracking furnace.
In order to cooperate to observe the internal state of the cracking furnace, an inspection port needs to be formed in the cracking furnace, the inspection port applied to the cracking furnace in the market at present is simple in structure, very limited in durability and safety, and meanwhile, the control mode and the storage state of the external closing device are very single.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problems in the prior art, an improved inspection opening and closing mechanism for a catalytic cracking furnace is provided, and the problems that the inspection opening structure for the catalytic cracking furnace is simple in structure, very limited in durability and safety and single in control mode and storage state of an external closing device are solved.
The technical scheme adopted for solving the technical problems is as follows: an inspection port opening and closing mechanism for a catalytic cracking furnace comprises an inspection port formed in the outer side wall of the catalytic cracking furnace, a fixed assembly frame body fixed on the inner side wall of the inspection port, an inner refractory brick and an outer refractory brick, wherein lateral assembly grooves for installing the inner refractory brick are formed in the inner side wall of the inspection port, an integrated structure lateral assembly seat is arranged on one side of the inspection port on the outer side face of the fixed assembly frame body, an outer turnover control arm is movably assembled on the outer side of the lateral assembly seat, an outer closed sealing plate for closing the inspection port is fixedly welded on the top end of the outer turnover control arm, and an inner assembly seat for assembling the outer refractory brick is arranged on the outer closed sealing plate close to the side wall of the inspection port.
The central position in the side direction assembly seat set up longitudinal mounting hole, the inside left side of side direction assembly seat install first elasticity stopper, the inside right side of side direction assembly seat install the second elasticity stopper.
The external overturning control arm comprises a first control arm, a second control arm, an outer limiting plate and a lateral locking bolt, wherein the first control arm is movably connected with the lateral assembly seat through a longitudinal assembly frame penetrating through a longitudinal mounting hole, the second control arm is movably assembled at the top end of the outer side of the first control arm, the outer limiting plate is fixed at the connecting end of the first control arm, and the lateral locking bolt is arranged on the outer limiting plate.
The inner side face of the inner side refractory brick is provided with an inner extrusion elastic sheet for controlling the extrusion of the inner side refractory brick to the position of the inspection opening.
The outer closed sealing plate is positioned at the inner assembly seat assembly end and fixedly welded with an inner assembly shaft tube, an assembly blind hole matched with the inner assembly shaft tube is formed in the outer side face of the inner assembly seat, and an inner damping spring is arranged in the inner assembly shaft tube.
The outer side face of the outer closed sealing plate is positioned at the periphery of the inner assembly shaft tube and is provided with a plurality of arc-shaped adjusting ports which are distributed in an annular array, a lateral adjusting frame is movably assembled at the outer side of the outer closed sealing plate, an arc-shaped control plate protruding into the arc-shaped adjusting port is arranged at the assembling end of the lateral adjusting frame, an L-shaped structure lateral limiting bracket for locking the inner refractory brick is arranged on the side wall of the arc-shaped control plate, and an L-shaped structure lateral limiting clamping groove matched with the lateral limiting bracket is formed in the side wall of the inner refractory brick.
The longitudinal assembly frame is close to the first elastic limiting block and the second elastic limiting block, the side walls of the ends of the first elastic limiting block and the second elastic limiting block are provided with arc-shaped positioning clamping grooves, and the first elastic limiting block and the second elastic limiting block are inserted into the arc-shaped positioning clamping grooves through the top arc-shaped extrusion heads to be elastically extruded with the longitudinal assembly frame.
And an elastic torsion spring for controlling the elastic reset of the arc-shaped control plate is arranged on the side wall of the external closed sealing plate.
And the assembly ends at two sides of the inner refractory brick are provided with inclined closing surfaces.
The beneficial effects of the invention are as follows:
(1) The invention relates to an inspection port opening and closing mechanism for a catalytic cracking furnace, which consists of a fixed assembly frame body arranged on the inner side wall of an inspection port, inner refractory bricks, a lateral assembly seat arranged on the outer side of the fixed assembly frame body, an outer overturning control arm movably assembled on the outer side of the lateral assembly seat and an outer refractory brick arranged at the closed end of the outer overturning control arm, wherein the inner refractory bricks and the outer refractory bricks are in extrusion fit, so that the tightness of the inspection port is ensured and the safety of the inspection port is improved;
(2) The external overturning control arm is respectively extruded and assembled with the first elastic limiting block and the second elastic limiting block by utilizing a longitudinal assembly frame of the connecting end, so that the position of the external overturning control arm can be locked and limited at multiple angles, and the adjustment and control are convenient;
(3) The external overturning control arm adopts a multi-section lockable structure design, so that the external overturning control arm can be folded and stored as required;
(4) The outside closed sealing plate is elastically assembled with the inner side assembly shaft tube on the inner assembly seat through the inner damping spring, so that the impact of the inner impact force on the opening and closing mechanism can be effectively reduced, and the safety is greatly improved.
(5) The lateral adjusting frame with the built-in arc-shaped control plate is movably assembled outside the external closed sealing plate, the lateral limiting brackets on the arc-shaped control plate are rotationally inserted into the lateral limiting clamping grooves to be connected with the inner refractory bricks, so that the tightness and the safety are improved, and the structure in the closed state is more stable.
Drawings
The invention will be further described with reference to the drawings and examples.
Fig. 1 is a schematic diagram of the general assembly of the present invention.
Fig. 2 is a side cross-sectional view of the present invention.
FIG. 3 is a partial cross-sectional view of the assembled end of the inner refractory block of the present invention.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "connected," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
An inspection port opening and closing mechanism for a catalytic cracking furnace shown in fig. 1, fig. 2 and fig. 3 comprises an inspection port 2 arranged on the outer side wall of a catalytic cracking furnace body 1, a fixed assembly frame body 3 fixed on the inner side wall of the inspection port 2, an inner refractory brick 4 and an outer refractory brick 5, lateral assembly grooves for installing the inner refractory brick 4 are formed in the inner side wall of the inspection port 2, an integrated lateral assembly seat 55 is arranged on one side of the outer side surface of the fixed assembly frame body 3, an outer overturning control arm is movably arranged on the outer side of the lateral assembly seat 55, an outer closing sealing plate 6 for closing the inspection port 2 is fixedly welded on the top end of the outer overturning control arm, and an inner assembly seat 7 for assembling the outer refractory brick 5 is arranged on the side wall of the outer closing sealing plate 6 close to the inspection port 2.
Principle of operation: people drive the external closing sealing plate 6 to overturn towards the position of the inspection opening 2 through the external overturning control arm, when the external closing sealing plate 6 moves to the opening position of the inspection opening 2, the external refractory bricks 5 are inserted into the inspection opening 2, and the internal refractory bricks 4 extrude the external side surfaces of the external refractory bricks 5 from the periphery, so that a refractory brick wall for closing the inspection opening 2 is formed.
Further, in order to match the movable assembly and the lateral elastic extrusion limiting, a longitudinal mounting hole 8 is formed in the central position inside the lateral assembly seat 55, a first elastic limiting block 9 is mounted on the left side inside the lateral assembly seat 55, and a second elastic limiting block 10 is mounted on the right side inside the lateral assembly seat 55.
Further, in order to cooperate to perform assembly and structural adjustment of the entire external roll-over control arm, the external roll-over control arm includes a first control arm 11 movably connected with a lateral assembly seat 55 through a longitudinal assembly frame 111 penetrating through a longitudinal mounting hole 8, a second control arm 12 movably assembled at an outer top end of the first control arm 11, an outer limit plate 13 fixed at a connecting end of the first control arm 11, and a lateral locking bolt 14 mounted on the outer limit plate 13.
The second control arm 12 is provided with a locking screw hole matched with the lateral locking bolt 14, and the first control arm 11 is fixedly assembled with the second control arm 12 by screwing the lateral locking bolt 14 into the locking screw hole.
Further, an inner extrusion dome 15 for controlling extrusion of the inner refractory brick 4 toward the inspection port 2 is attached to the inner surface of the inner refractory brick 4 in order to accommodate the inner elastic extrusion.
The inner pressure spring 15 is inserted into the inner refractory brick 4 to limit the fit of the inner refractory brick 4 and elastically press the inner refractory brick.
Further, for matching sliding assembly and elastic damping, an inner assembly shaft tube 16 is welded and fixed at the assembly end of the outer closed sealing plate 6 on the inner assembly seat 7, an assembly blind hole 17 matched with the inner assembly shaft tube 16 is formed on the outer side surface of the inner assembly seat 7, and an inner damping spring 18 is mounted inside the inner assembly shaft tube 16.
Wherein the section of the inner assembly shaft tube 16 is of a non-circular structure, and the inner assembly seat 7 is sleeved outside the inner assembly shaft tube 16 through an assembly blind hole 17 and is slidingly assembled with the outer closed sealing plate 6.
Further, in order to match the lateral movable assembly and the external adjustment and separation, 2 arc-shaped adjusting ports 19 which are distributed in an annular array are formed in the periphery of the inner assembly shaft tube 16 on the outer side face of the external closed sealing plate 6, a lateral adjusting frame 20 is movably assembled on the outer side of the external closed sealing plate 6, an arc-shaped control plate 21 protruding into the arc-shaped adjusting port 19 is arranged at the assembling end of the lateral adjusting frame 20, an L-shaped structure lateral limiting bracket 22 for locking the inner side refractory brick 4 is arranged on the side wall of the arc-shaped control plate 21, and an L-shaped structure lateral limiting clamping groove 23 matched with the lateral limiting bracket 22 is formed in the side wall of the inner side refractory brick 4.
The lateral limit clamping groove 23 is provided with a loading and unloading gap adjacent to the lateral limit bracket 22, the external closed sealing plate 6 controls the outside refractory bricks 5, the arc-shaped control plate 21 and the lateral limit bracket 22 to be inserted into the inspection opening 2, the lateral limit bracket 22 is inserted into the loading and unloading gap at this time, and then the lateral limit bracket 22 is driven to be inserted into the limit section of the lateral limit clamping groove 23 by rotating the lateral adjusting frame 20, so that the clamping limit of all the inside refractory bricks 4 is completed.
Further, for cooperation rotation grafting and separation, the longitudinal assembly frame 111 is close to and has seted up arc location draw-in groove 24 on first elasticity stopper 9 and the second elasticity stopper 10 end lateral wall, and first elasticity stopper 9 and second elasticity stopper 10 insert arc location draw-in groove 24 inside and longitudinal assembly frame 111 elasticity extrusion through top arc extrusion head 25.
Further, in order to cooperate with the elastic extrusion limit, thereby improving the assembly firmness and stability, the side wall of the outer closing sealing plate 6 is provided with an elastic torsion spring 26 for controlling the elastic reset of the arc-shaped control plate 21.
Further, in order to improve the tightness of the side assembly, the two side assembly ends of the inner refractory brick 4 are provided with inclined closing surfaces.
The invention relates to an inspection port opening and closing mechanism for a catalytic cracking furnace, which consists of a fixed assembly frame body 3, an inner refractory brick 4, a lateral assembly seat 55, an outer turnover control arm and an outer refractory brick 5, wherein the fixed assembly frame body 3 is arranged on the inner side wall of an inspection port 2; the external overturning control arm is respectively extruded and assembled with the first elastic limiting block and the second elastic limiting block by utilizing a longitudinal assembly frame of the connecting end, so that the position of the external overturning control arm can be locked and limited at multiple angles, and the adjustment and control are convenient; the external overturning control arm adopts a multi-section lockable structure design, so that the external overturning control arm can be folded and stored as required; the outside closed sealing plate is elastically assembled with the inner side assembly shaft tube on the inner assembly seat through the inner damping spring, so that the impact of the inner impact force on the opening and closing mechanism can be effectively reduced, and the safety is greatly improved. The lateral adjusting frame with the built-in arc-shaped control plate is movably assembled outside the external closed sealing plate, the lateral limiting brackets on the arc-shaped control plate are rotationally inserted into the lateral limiting clamping grooves to be connected with the inner refractory bricks, so that the tightness and the safety are improved, and the structure in the closed state is more stable.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined according to the scope of claims.
Claims (4)
1. An inspection opening and closing mechanism for a catalytic cracking furnace comprises an inspection opening (2) formed in the outer side wall of a catalytic cracking furnace body (1), a fixed assembly frame body (3) fixed on the inner side wall of the inspection opening (2), an inner refractory brick (4) and an outer refractory brick (5), and is characterized in that: the utility model provides a side direction assembly groove that is used for installing inboard resistant firebrick (4) has all been seted up on inspection port (2) inside wall, fixed assembly framework (3) lateral surface be located inspection port (2) one side and have an integral structure side direction assembly seat (55), side direction assembly seat (55) outside activity be assembled with outside upset control arm, outside upset control arm top welded fastening have be used for closing outside closed closing seal board (6) of inspection port (2), outside closed seal board (6) be close to be provided with on inspection port (2) lateral wall and be used for assembling inside assembly seat (7) of outside resistant firebrick (5), side direction assembly seat (55) inside central point position seted up longitudinal mounting hole (8), side direction assembly seat (55) inside left side install first elasticity stopper (9), side direction assembly seat (55) inside right side install second elasticity stopper (10), outside upset control arm include first assembly control arm (11) that run through longitudinal mounting hole (8) and side direction assembly seat (55) swing joint through longitudinal mounting frame (111), first control arm (11) on the outside of first control arm (12) top of first control arm (12) movable control arm, the utility model provides a fixed outside limiting plate (13) at first control arm (11) link and install side direction locking bolt (14) on outside limiting plate (13) outside closed closing plate (6) be located inside assembly seat (7) assembly end welded fastening and be equipped with inside assembly central siphon (16), inside assembly seat (7) lateral surface on offer on the medial surface with inside assembly central siphon (16) matched with assembly blind hole (17), inside assembly central siphon (16) internally mounted have inside damping spring (18), outside closed closing plate (6) be located inside assembly seat (7) assembly end welded fastening and be equipped with inside assembly central siphon (16), inside assembly seat (7) lateral surface on offer on with inside assembly central siphon (16) matched with assembly blind hole (17), inside assembly central siphon (16) internally mounted have inside damping spring (18), outside closed sealing plate (6) lateral surface be located inside assembly central siphon (16) periphery offer a plurality of be ring array's arc adjustment mouth (19), outside closed sealing plate (6) be equipped with outside movable sealing plate (6) assembly end welded fastening have inside assembly central siphon (20), adjusting boss (20) lateral direction adjustment control panel (20) arc adjustment end (20), the side wall of the arc-shaped control plate (21) is provided with an L-shaped structure lateral limit bracket (22) for locking the inner side refractory brick (4), the side wall of the inner side refractory brick (4) is provided with an L-shaped structure lateral limit clamping groove (23) matched with the lateral limit bracket (22), the longitudinal assembly frame (111) is close to the end side wall of the first elastic limiting block (9) and the second elastic limiting block (10), the end side wall of the first elastic limiting block (9) and the second elastic limiting block (10) are provided with an arc-shaped positioning clamping groove (24), and the first elastic limiting block (9) and the second elastic limiting block (10) are inserted into the arc-shaped positioning clamping groove (24) through a top arc-shaped extrusion head (25) to be elastically extruded with the longitudinal assembly frame (111).
2. The inspection port opening and closing mechanism for a catalytic cracking furnace according to claim 1, characterized in that: an inner extrusion spring piece (15) for controlling the extrusion of the inner refractory brick (4) to the position of the inspection opening is arranged on the inner side surface of the inner refractory brick (4).
3. The inspection port opening and closing mechanism for a catalytic cracking furnace according to claim 1, characterized in that: the side wall of the external closing sealing plate (6) is provided with an elastic torsion spring (26) for controlling the elastic reset of the arc-shaped control plate (21).
4. The inspection port opening and closing mechanism for a catalytic cracking furnace according to claim 1, characterized in that: the two side assembling ends of the inner side refractory brick (4) are provided with inclined closing surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210259199.4A CN114752402B (en) | 2022-03-16 | 2022-03-16 | Inspection port opening and closing mechanism for catalytic cracking furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210259199.4A CN114752402B (en) | 2022-03-16 | 2022-03-16 | Inspection port opening and closing mechanism for catalytic cracking furnace |
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| Publication Number | Publication Date |
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| CN114752402A CN114752402A (en) | 2022-07-15 |
| CN114752402B true CN114752402B (en) | 2023-09-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210259199.4A Active CN114752402B (en) | 2022-03-16 | 2022-03-16 | Inspection port opening and closing mechanism for catalytic cracking furnace |
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| CN (1) | CN114752402B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115505415B (en) * | 2022-08-25 | 2023-09-22 | 江苏博颂能源科技有限公司 | Multidirectional closed detection unit for catalytic cracking pilot plant |
| CN115414870B (en) * | 2022-08-25 | 2023-11-03 | 江苏博颂能源科技有限公司 | Catalyst loading device for ADHO device anti-regeneration unit |
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| WO2008017660A1 (en) * | 2006-08-08 | 2008-02-14 | Shell Internationale Research Maatschappij B.V. | Catalytic cracking riser reactor |
| CN201574479U (en) * | 2009-12-01 | 2010-09-08 | 浙江中财管道科技股份有限公司 | Pressure-bearing vertical pipe access opening structure |
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