Safety detection device for cracking furnace

Abstract

The utility model relates to a safety detection device for a cracking furnace, which belongs to the technical field of safety detection of cracking furnaces and comprises two conveying pipelines, two flanges and a plurality of fixing bolts. The sealing detection mechanism comprises an upper sealing shell movably installed on the peripheral walls of the two conveying pipelines, a lower sealing shell is movably installed on the peripheral walls of the conveying pipelines, and a safety detection assembly is fixedly installed at the top of the upper sealing shell. According to the safety detection device for the cracking furnace, the interiors of the upper sealing shell and the lower sealing shell are monitored in real time through the safety detection assembly, meanwhile, the sealing cover bodies are controlled through the safety detection assembly, and the left sealing cover body and the right sealing cover body are close to each other to form an additional sealing cavity through the action of a bidirectional threaded rod, an adjusting base and a servo motor; leaked gas is sealed, so that outward leakage of the gas is greatly reduced, and potential safety hazards are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of cracking furnace safety detection, in particular to a cracking furnace safety detection device. Background Art

[0002] A cracking furnace is a type of chemical equipment primarily used in the thermal cracking process. It uses high temperatures to break down heavy hydrocarbon feedstocks into lighter products, such as ethylene and propylene, essential chemical raw materials. Cracking furnaces typically consist of one or more heating chambers. The high temperatures within these chambers break down the feedstock's molecular structure, producing smaller alkenes and alkynes. The cracking process typically occurs at temperatures between 800°C and 900°C, sometimes even higher, in an oxygen-deficient or low-oxygen environment to minimize feedstock combustion.

[0003] According to Chinese patent announcement No. CN221121919U, a methane and ethane cracking furnace safety detection device is disclosed, and the technical solution is as follows: "It includes two gas pipelines, and flanges are fixed at opposite ends of the two gas pipelines, and the two flanges are fixed to each other by bolts; two semicircular bins distributed up and down are set on the outer peripheral walls of the two flanges, and mounting blocks are fixed on the left and right sides of the semicircular bins, and an arc-shaped groove connected to the interior of the semicircular bin is opened on the side of the mounting block facing the gas pipeline; the semicircular bin is provided with a detection component for detecting gas leakage, and the mounting block is provided with a mounting component for fixing the two semicircular bins to the gas pipeline; the detection component includes a controller fixed to the left side of the top semicircular bin, a laser methane sensor is fixed on the inner top wall of the top semicircular bin, an ethane gas sensor is fixed on the inner top wall of the top semicircular bin, a buzzer is fixed on the left side of the controller, and a fan is fixed between the left and right inner walls of the bottom semicircular bin."

[0004] The above technical solution has the following defects: although the leaked gas can be detected and the staff can be reminded in the first time, when the gas leaked from the flange connection is large, due to the difference between the pressure inside the pipeline and the external pressure, the gas will quickly fill the entire semicircular warehouse. At the same time, since the two semicircular warehouses are installed by means of a clamping structure such as a limit plate, a guide rod, a limit sleeve and a spring, when the air pressure is high, these structures cannot make the two semicircular warehouses achieve a sealing effect. The gas will overflow outwards from the connection between the two semicircular warehouses, thereby causing the gas to spread into the surrounding air, causing certain safety hazards. Therefore, a cracking furnace safety detection device is proposed to solve the above-mentioned problem. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a cracking furnace safety detection device, which has the advantages of solving the problems.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a cracking furnace safety detection device, comprising two conveying pipes, two flanges and a plurality of fixing bolts, wherein the outer peripheral wall of the conveying pipe is provided with a sealing detection mechanism;

[0007] The sealing detection mechanism includes an upper sealing shell movably mounted on the outer peripheral walls of the two conveying pipes, a lower sealing shell movably mounted on the outer peripheral wall of the conveying pipes, a safety detection component fixedly mounted on the top of the upper sealing shell, the outer peripheral walls of the two conveying pipes are slidably connected with two sealing cover bodies, a sealing strip is fixedly mounted on the side of the sealing cover body close to the flange, the front and rear outer walls of the sealing cover body are fixedly mounted with a first mounting seat, the internal threads of two adjacent first mounting seats are connected with fixing screws, the left and right inner walls of the lower sealing shell are fixedly mounted with mounting plates, a two-way threaded rod is rotatably mounted between the two mounting plates, the outer peripheral wall of the two-way threaded rod is threaded with two adjustment seats, a servo motor is fixedly mounted on the right outer wall of the lower sealing shell, the lower sealing shell and the front and rear outer walls of the lower sealing shell are fixedly mounted with a second mounting seat, and the interiors of two adjacent second mounting seats are movably mounted with mounting bolts.

[0008] Furthermore, a semicircular chute is provided on one side of the upper sealing shell and the lower sealing shell close to the conveying pipe. The conveying pipe is slidably connected inside the semicircular chute and is adapted in size. The outer walls of the opposite sides of the two adjacent upper sealing shells and lower sealing shells fit together.

[0009] Furthermore, the safety detection component includes a control panel, a laser methane sensor, an ethane gas sensor and a buzzer. The laser methane sensor and the ethane gas sensor are both installed at the bottom of the control panel and located inside the upper sealed shell, and the buzzer is installed on the front side of the control panel.

[0010] Furthermore, the sealing strip is U-shaped, two sealing strips form a sealing frame, four sealing covers form a gas sealing cover, and the distance between the left and right inner walls of the gas sealing cover is greater than the length of the fixing bolt.

[0011] Furthermore, the bottom of the adjustment seat is slidably connected to the bottom inner wall of the lower sealing shell, the adjustment seat is fixedly installed on the bottom outer wall of the bottom sealing cover, and the output shaft of the servo motor passes through the right side wall of the lower sealing shell and is fixedly connected to the right outer wall of the bidirectional threaded rod.

[0012] Furthermore, a threaded hole is provided inside the first mounting seat, the fixing screw is threadedly connected inside the threaded hole and is of a matching size, and a mounting groove is provided inside the second mounting seat, the mounting bolt is movably installed inside the mounting groove and is of a matching size.

[0013] Furthermore, the two flanges are fixedly mounted on the outer walls of the two conveying pipes on opposite sides, and the fixing bolts are mounted inside the flanges.

[0014] Furthermore, a sealing ring is installed on the top of the upper sealing shell.

[0015] Compared with the existing technology, the technical solution of this application has the following beneficial effects:

[0016] The cracking furnace safety detection device monitors the interior of the upper and lower sealed shells in real time through a safety detection component, and controls the sealed cover through the safety detection component. Through the action of a bidirectional threaded rod, an adjustment seat and a servo motor, the left and right sealed covers are brought close to each other to form an additional sealed cavity, thereby sealing leaked gas, greatly reducing gas leakage and preventing safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the utility model;

[0018] Figure 2 For this utility model Figure 1 Look at the structural diagram;

[0019] Figure 3 This is a schematic diagram of the sealing cover structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the sealing strip structure of the utility model.

[0021] In the picture:

[0022] 1. Conveying pipe; 2. Flange; 3. Fixing bolts; 4. Upper sealing shell; 5. Lower sealing shell; 6. Safety detection assembly; 7. Sealing cover; 8. Sealing strip; 9. First mounting seat; 10. Fixing screws; 11. Mounting plate; 12. Bidirectional threaded rod; 13. Adjustment seat; 14. Servo motor; 15. Second mounting seat; 16. Mounting bolts. DETAILED DESCRIPTION

[0023] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] For example 1, please refer to Figures 1 to 4 A cracking furnace safety detection device in this embodiment includes two conveying pipes 1, two flanges 2 and a plurality of fixing bolts 3. The outer wall of the conveying pipe 1 is provided with a sealing detection mechanism.

[0025] The two flanges 2 are fixedly mounted on the outer walls of the two conveying pipes 1 on opposite sides, and the fixing bolts 3 are installed inside the flanges 2 .

[0026] The sealing detection mechanism includes an upper sealing shell 4 movably mounted on the outer peripheral wall of the two conveying pipes 1, and a lower sealing shell 5 movably mounted on the outer peripheral wall of the conveying pipe 1. The upper sealing shell 4 and the lower sealing shell 5 are both provided with a semicircular chute on the side close to the conveying pipe 1. The conveying pipe 1 is slidably connected to the inside of the semicircular chute and is adapted in size. The outer walls of the opposite sides of the two adjacent upper sealing shells 4 and lower sealing shells 5 fit together.

[0027] A safety detection component 6 is fixedly installed on the top of the upper sealed shell 4. The safety detection component 6 includes a control panel, a laser methane sensor, an ethane gas sensor and a buzzer. The laser methane sensor and the ethane gas sensor are both installed at the bottom of the control panel and located inside the upper sealed shell 4. The buzzer is installed on the front side of the control panel.

[0028] The outer walls of the two conveying pipes 1 are slidably connected with two sealing covers 7. A sealing strip 8 is fixedly installed on the side of the sealing cover 7 close to the flange 2. The sealing strip 8 is U-shaped. The two sealing strips 8 form a sealing frame. The four sealing covers 7 form a gas sealing cover. The distance between the inner walls on the left and right sides of the gas sealing cover is greater than the length of the fixing bolt 3. The front and rear outer walls of the sealing cover 7 are fixedly installed with a first mounting seat 9. The internal threads of the two adjacent first mounting seats 9 are connected with fixing screws 10.

[0029] The left and right inner walls of the lower sealed shell 5 are fixedly installed with mounting plates 11, and a bidirectional threaded rod 12 is rotatably installed between the two mounting plates 11. The bottom of the adjustment seat 13 is slidingly connected to the bottom inner wall of the lower sealed shell 5, and the adjustment seat 13 is fixedly installed on the bottom outer wall of the bottom sealing cover 7. The output shaft of the servo motor 14 passes through the right side wall of the lower sealed shell 5 and is fixedly connected to the right outer wall of the bidirectional threaded rod 12. The outer peripheral wall of the bidirectional threaded rod 12 is threadedly connected with two adjustment seats 13, and the right outer wall of the lower sealed shell 5 is fixedly installed with a servo motor 14.

[0030] The lower sealing shell 5 and the front and rear outer walls of the lower sealing shell 5 are fixedly installed with a second mounting seat 15, and the interiors of the two adjacent second mounting seats 15 are movably installed with mounting bolts 16. A threaded hole is provided inside the first mounting seat 9, and the fixing screw 10 is threadedly connected to the inside of the threaded hole and is adapted in size. A mounting groove is provided inside the second mounting seat 15, and the mounting bolt 16 is movably installed inside the mounting groove and is adapted in size.

[0031] In this embodiment, the laser methane sensor is electrically connected to the control panel, the ethane gas sensor is electrically connected to the control panel, the buzzer is electrically connected to the control panel, and the servo motor 14 is electrically connected to the control panel.

[0032] In this embodiment, the two sealing covers 7 are installed and fixed by fixing screws 10, which has high stability. At the same time, the flange 2 is sealed by a mechanical mechanism, and the sealing covers 7 can withstand greater pressure.

[0033] Embodiment 2 is based on embodiment 1 and is provided with a sealing ring to prevent gas from leaking out from the connection between the safety detection component 6 and the upper sealing shell 4.

[0034] The working principle of the above embodiment is:

[0035] When installing the sealing detection mechanism, the lower sealing shell 5 is fitted on the outer peripheral walls of the two conveying pipes 1. At this time, the two sealing covers 7 at the bottom are respectively fitted on the outer peripheral walls of the two conveying pipes 1. Then, the two sealing covers 7 at the top are respectively fitted with the two sealing covers 7 at the bottom. The fixing screws 10 are threadedly connected to the inside of the two adjacent first mounting seats 9. Then, the upper sealing shell 4 is fitted on the top of the lower sealing shell 5. The upper sealing shell 4 and the lower sealing shell 5 are installed and fixed to the second mounting seat 15 through the mounting bolts 16. When gas leakage occurs, the safety detection component 6 issues an alarm. At this time, the safety detection component 6 controls the servo motor 14 and drives the adjustment seat 13 to rotate. At this time, the two adjustment seats 13 drive the left and right sealing covers 7 to move toward the direction close to the flange 2 and completely wrap it. At this time, an additional sealing cavity is formed, so that it can achieve a sealing effect to prevent gas leakage.

[0036] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0037] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cracking furnace safety detection device, comprising two conveying pipes (1), two flanges (2) and a plurality of fixing bolts (3), characterized in that: The outer peripheral wall of the delivery pipe (1) is provided with a sealing detection mechanism; The sealing detection mechanism comprises an upper sealing shell (4) movably mounted on the outer peripheral walls of the two conveying pipes (1), a lower sealing shell (5) movably mounted on the outer peripheral walls of the conveying pipes (1), a safety detection assembly (6) fixedly mounted on the top of the upper sealing shell (4), two sealing covers (7) slidably connected to the outer peripheral walls of the two conveying pipes (1), a sealing strip (8) fixedly mounted on the side of the sealing cover (7) close to the flange (2), a first mounting seat (9) fixedly mounted on the outer walls of the front and rear sides of the sealing cover (7), and the internal threads of two adjacent first mounting seats (9) A fixing screw (10) is connected, and mounting plates (11) are fixedly installed on the left and right inner walls of the lower sealing shell (5), a bidirectional threaded rod (12) is rotatably installed between the two mounting plates (11), and two adjusting seats (13) are threadedly connected to the outer peripheral wall of the bidirectional threaded rod (12), and a servo motor (14) is fixedly installed on the right outer wall of the lower sealing shell (5), and second mounting seats (15) are fixedly installed on the lower sealing shell (5) and the front and rear outer walls of the lower sealing shell (5), and mounting bolts (16) are movably installed inside two adjacent second mounting seats (15).

2. A cracking furnace safety detection device according to claim 1, characterized in that: A semicircular chute is provided on one side of the upper sealing shell (4) and the lower sealing shell (5) close to the delivery pipe (1); the delivery pipe (1) is slidably connected inside the semicircular chute and is of a size adapted thereto; and the outer walls of the opposite sides of the two adjacent upper sealing shells (4) and lower sealing shells (5) fit together.

3. A cracking furnace safety detection device according to claim 1, characterized in that: The safety detection component (6) comprises a control panel, a laser methane sensor, an ethane gas sensor and a buzzer. The laser methane sensor and the ethane gas sensor are both installed at the bottom of the control panel and located inside the upper sealed housing (4). The buzzer is installed on the front side of the control panel.

4. A cracking furnace safety detection device according to claim 1, characterized in that: The sealing strip (8) is U-shaped, two sealing strips (8) form a sealing frame, and four sealing covers (7) form a gas sealing cover. The distance between the inner walls on the left and right sides of the gas sealing cover is greater than the length of the fixing bolt (3).

5. A cracking furnace safety detection device according to claim 1, characterized in that: The bottom of the adjustment seat (13) is slidably connected to the bottom inner wall of the lower sealing shell (5), and the adjustment seat (13) is fixedly mounted on the bottom outer wall of the bottom sealing cover (7). The output shaft of the servo motor (14) passes through the right side wall of the lower sealing shell (5) and is fixedly connected to the right side outer wall of the bidirectional threaded rod (12).

6. A cracking furnace safety detection device according to claim 1, characterized in that: A threaded hole is provided inside the first mounting seat (9), and the fixing screw (10) is threadedly connected inside the threaded hole and has a size that matches the first mounting seat (9). A mounting groove is provided inside the second mounting seat (15), and the mounting bolt (16) is movably installed inside the mounting groove and has a size that matches the first mounting seat (15).

7. A cracking furnace safety detection device according to claim 1, characterized in that: The two flanges (2) are respectively fixedly mounted on the outer walls of the two conveying pipes (1) on opposite sides, and the fixing bolts (3) are mounted inside the flanges (2).

8. A cracking furnace safety detection device according to claim 1, characterized in that: A sealing ring is installed on the top of the upper sealing shell (4).

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