A seal structure of a pressure vessel capable of frequent rotation and quick opening

Abstract

The present application relates to pressure vessel sealing structure technical field, specifically to a kind of frequently rotatable quick opening pressure vessel sealing structure, also include clamp rotating mechanism, clamp jacking mechanism, jacking mechanism and sealing ring, clamp jacking mechanism and clamp rotating mechanism are all installed on furnace body, clamp jacking mechanism is used to vertically jacking rotating clamp and wraps furnace body and furnace cover, this frequently rotatable quick opening pressure vessel sealing structure, by sealing ring is buried in fixed flange, avoid the elastic friction force due to sealing ring, reduce the torque required for clamp rotating mechanism.In the beginning of equipment work, through gas supply mechanism, air blowing is carried out, so that the foot of sealing ring can be inserted into gap, i.e.can realize sealing, and after equipment work, air suction can be carried out through gas supply mechanism, so that sealing ring is retracted into fixed flange, avoid when opening flange, it will make the jump dislocation of movable flange opening or pop out.

Description

Technical Field

[0001] This invention relates to the field of pressure vessel sealing structure technology, and specifically to a pressure vessel sealing structure that can be frequently rotated and opened quickly. Background Technology

[0002] Pressure vessels are commonly used in the production and processing of various fields such as petroleum, chemical, pharmaceutical, and new energy. For pressure vessels that require frequent and quick opening, sealing rings are typically installed directly between fixed and movable flanges, or gaskets are used for sealing. However, these sealing methods subject the flange clamps to the elastic friction force provided by the sealing rings or gaskets, making it difficult to rotate the clamps and requiring a larger torque from the power unit, thus increasing the capital investment in the power unit. Furthermore, the elastic force of the sealing rings or gaskets during flange opening can cause the movable flange to misalign or pop out, hindering automated or unmanned operation. Therefore, a pressure vessel sealing structure that allows for frequent and quick opening and rotation is needed, which can reduce the torque required by the power unit and prevent the elastic force of the sealing rings or gaskets from causing misalignment or popping out of the movable flange during opening. Summary of the Invention

[0003] To address the aforementioned technical shortcomings, the purpose of this invention is to provide a pressure vessel sealing structure that can be frequently rotated and quickly opened. This structure reduces the torque required by the power unit and prevents the elastic force of the sealing ring or gasket from causing the movable flange to jump, misalign, or pop out during opening.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: The present invention provides a pressure vessel sealing structure that can be frequently rotated and quickly opened, including a furnace body and a furnace cover that fits on the top of the furnace body. A fixed flange is provided on the furnace body, and a movable flange is provided on the furnace cover. A rotating clamp is fitted on the outer edge of the furnace body to fix and engage the fixed flange and the movable flange. The invention also includes a clamp rotation mechanism, a clamp lifting mechanism, a lifting mechanism, and a sealing ring. The clamp lifting mechanism and the clamp rotation mechanism are both installed on the furnace body. The clamp lifting mechanism is used to vertically lift the rotating clamp to enclose the furnace body and the furnace cover. The clamp rotation mechanism is used to drive the rotating clamp to rotate and engage the fixed flange and the movable flange. A gap is left between the movable flange and the fixed flange. A sealing ring that can slide vertically is provided inside the fixed flange. An annular groove for vertical sliding of the sealing ring is opened inside the fixed flange. The lifting mechanism is used to vertically lift the sealing ring. The sealing ring has a toothed cross-section. The top of the sealing ring includes two flipped feet, which are used to extend into the gaps on both sides of the annular groove.

[0005] Preferably, the lifting mechanism is an air supply mechanism, and the bottom of the sealing ring is provided with multiple air passages connected to the air supply mechanism, with the air outlet of the air passage located at the bottom outer edge of the sealing ring.

[0006] Preferably, the lifting mechanism is a positioning drive mechanism, which includes a lifting column, a pushing ring, a lifting ring plate, and multiple sliding columns. The lifting ring plate is located in an annular groove, and a sealing ring is fixedly installed on the top of the lifting ring plate. The tops of the multiple sliding columns are fixedly connected to the lifting ring plate, and the pushing ring is fixedly installed on the bottom of the sliding columns. The bottom of the pushing ring is provided with a contact inclined plate for contacting the lifting column. The bottom of the contact inclined plate has an inclined surface structure. The lifting column is fixedly installed on the clamp rotation mechanism. When the clamp lifting mechanism pushes the rotating clamp upward to engage with the movable flange, the lifting column does not contact the inclined surface of the contact inclined plate. When the clamp rotation mechanism drives the rotating clamp to rotate, the top of the lifting column moves to contact the inclined surface of the contact inclined plate.

[0007] Preferably, a limit guide ring is fixedly provided at the bottom of the movable flange, and the cross-sectional profile of the limit guide ring is a triangular structure.

[0008] Preferably, the bottom of the annular groove is provided with a ventilation annular groove.

[0009] Preferably, the gas supply mechanism includes a ring pipe and multiple gas inlet pipes. The multiple gas inlet pipes are rotatably installed inside the ring pipe. The top of the gas inlet pipe is threaded to the bottom of the gas passage. The outer edge of the ring pipe is provided with a gas inlet pipe, which is connected to a gas source.

[0010] Preferably, the clamp rotation mechanism includes a drive motor, a gear, a gear ring, and a connecting seat. The drive motor is fixedly installed on the furnace body, the gear is fixedly installed on the output end of the drive motor, the rotating clamp is fixedly installed on the connecting seat, the connecting seat is rotatably installed on the lifting end of the clamp lifting mechanism, the gear ring is fixedly connected to the connecting seat, and the gear ring meshes with the gear. When the clamp lifting mechanism pushes the rotating clamp upward to its final position, the gear ring and the gear remain meshed.

[0011] Preferably, the clamp lifting mechanism includes two lifting devices and two arc-shaped slide rails. The two arc-shaped slide rails are fixedly installed at the bottom of the connecting seat, and the two lifting devices are fixedly installed on both sides of the furnace body. The top of the lifting device is provided with a slider, which is slidably connected to the arc-shaped slide rail.

[0012] The beneficial effects of this invention are as follows: This pressure vessel sealing structure, which can be frequently rotated and opened quickly, avoids the elastic friction force generated by the sealing ring by embedding it inside the fixed flange, thus reducing the torque required by the clamp rotation mechanism. Before the equipment starts working, air is blown through the air supply mechanism so that the flange of the sealing ring can be inserted into the gap, thereby achieving a seal. After the equipment starts working, air can be drawn in through the air supply mechanism to retract the sealing ring into the fixed flange, preventing the elastic force of the sealing ring from causing the movable flange to jump, misalign, or pop out when opening the flange, thus facilitating automation or unmanned operation.

[0013] For environments where an air supply mechanism cannot be installed, a positioning drive mechanism can be used. In the final stage of the rotating clamp's engagement, the sealing ring only begins to seal the gap, thus reducing the required torque. Furthermore, during opening, the sealing ring retracts into the fixed flange first, preventing misalignment or ejection during opening. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the rotating clamp of the present invention in the state where it is not engaged with the movable flange and the fixed flange.

[0017] Figure 3 This is a three-dimensional structural diagram of the gas supply mechanism.

[0018] Figure 4 This is a partial cross-sectional view of the present invention.

[0019] Figure 5 This is a schematic diagram showing the state of the sealing ring when the gas supply mechanism is ventilated.

[0020] Figure 6 for Figure 5 A schematic diagram showing the state of the sealing ring after continued ventilation.

[0021] Figure 7 This is a three-dimensional structural diagram of the positioning drive mechanism.

[0022] Figure 8 This is a schematic diagram of a three-dimensional positioning drive mechanism.

[0023] Figure 9 for Figure 4 A magnified view of part A.

[0024] Figure 10 This is a three-dimensional schematic diagram of the clamp rotation mechanism.

[0025] Figure 11 This is a three-dimensional schematic diagram of the clamp lifting mechanism.

[0026] Explanation of reference numerals in the attached drawings: 1-furnace body; 1a-fixed flange; 1a1-gas duct; 1a2-ventilation ring groove; 2-furnace cover; 2a-movable flange; 2b-limiting guide ring; 3-rotating clamp; 4-clamp rotation mechanism; 4a-drive motor; 4b-gear; 4c-gear ring; 4d-connecting seat; 5-clamp lifting mechanism; 5a-lifter; 5b-slider; 5c-arc slide rail; 6-gas supply mechanism; 6a-gas inlet pipe; 6b-ring pipe; 6c-gas inlet pipe; 7-sealing ring; 7a-flipping foot; 8-positioning drive mechanism; 8a-lifting column; 8b-push ring; 8c-contact inclined plate; 8d-sliding column; 8e-lifting ring plate. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Example 1: This invention provides a pressure vessel sealing structure that can be frequently rotated and quickly opened, such as... Figure 1-4 As shown, the furnace includes a furnace body 1 and a furnace cover 2 that covers the top of the furnace body 1. A fixed flange 1a is provided on the furnace body 1, and a movable flange 2a is provided on the furnace cover 2. A rotating clamp 3 is fitted on the outer edge of the furnace body 1 to securely engage the fixed flange 1a and the movable flange 2a. It is understood that the furnace cover 2 can be fitted onto the furnace body 1 vertically downwards or rotated. This application uses a rotating method to fit the furnace cover 2 onto the top of the furnace body 1, but the structure of this application can also be used for vertical fitting. The furnace also includes a clamp rotation mechanism 4, a clamp lifting mechanism 5, a lifting mechanism, and a sealing ring 7. Both the clamp lifting mechanism 5 and the clamp rotation mechanism 4 are installed on the furnace body 1. The clamp lifting mechanism 5 is used to vertically lift the rotating clamp 3 to enclose the furnace body 1 and the furnace cover 2. The clamp rotation mechanism 4 is used to drive the rotating clamp 3 to rotate and engage the fixed flange 1a and the movable flange 2a. Figure 4As shown, there is a gap between the movable flange 2a and the fixed flange 1a. This gap is limited by a protrusion at the bottom of the movable flange 2a, and the gap is 1-2mm. A vertically sliding sealing ring 7 is provided inside the fixed flange 1a. An annular groove for the sealing ring 7 to slide vertically is opened inside the fixed flange 1a. The lifting mechanism is used to lift the sealing ring 7 vertically upward. The sealing ring 7 has a toothed cross-section. The top of the sealing ring 7 includes two flipped feet 7a. By lifting the sealing ring 7 upward through the lifting mechanism, the two flipped feet 7a are used to extend into the gaps on both sides of the annular groove, thus achieving a seal at the gap.

[0029] In this design, the rotating clamp 3, before being lifted upwards by the lifting mechanism, already connects the movable flange 2a and the fixed flange 1a. This ensures that when the clamp rotating mechanism 4 drives the rotating clamp 3 to rotate, the rotating clamp 3 will not be subjected to the upward elastic force of the sealing ring 7, thus reducing the frictional force experienced by the rotating clamp 3 during rotation.

[0030] Furthermore, when the furnace cover 2 needs to be opened, the lifting mechanism will cause the sealing ring 7 to descend, allowing it to retract into the annular groove. This prevents the movable flange from jumping, misaligning, or popping out during opening, facilitating automated or unmanned operation.

[0031] To ensure that the flip-foot 7a is properly engaged within the gap, and not folded inwards, therefore, as follows: Figure 4 As shown, a limiting guide ring 2b is fixedly installed at the bottom of the movable flange 2a. The cross-sectional profile of the limiting guide ring 2b is a triangular structure. The limiting guide ring 2b limits the flip-foot 7a, ensuring that the two flip-foot 7a will not fold inward.

[0032] like Figure 9 As shown, the bottom of the annular groove is provided with a ventilation annular groove 1a2. The presence of the ventilation annular groove 1a2 allows the gas to move along the ventilation annular groove 1a2 when the air passage 1a1 is first blown, making the air pressure that initially drives the sealing ring 7 to move more stable, and allowing the sealing ring 7 to rise more smoothly.

[0033] like Figure 4-6 As shown, the lifting mechanism is an air supply mechanism 6. Multiple air channels 1a1 connected to the air supply mechanism 6 are opened at the bottom of the sealing ring 7. Air is blown along the air channels 1a1 by the air supply mechanism 6, causing the sealing ring 7 to rise. The air outlet of the air channel 1a1 is located at the bottom outer edge of the sealing ring 7. This allows the sealing ring 7 to tilt during its ascent when air is blown through the air channels 1a1. Figure 5 As shown and Figure 6 As shown, the outer flange 7a can be inserted deeper into the gap, thus achieving a better sealing effect. During the sealing process, there will be... Figure 5 Transform into Figure 6Specifically, observe the position of the sealing ring 7 relative to the bottom of the groove. Multiple air passages 1a1 are evenly distributed along the circumference of the fixed flange 1a.

[0034] like Figure 3 and Figure 4 As shown, the gas supply mechanism 6 includes a ring pipe 6b and multiple gas inlet pipes 6a. The multiple gas inlet pipes 6a are rotatably installed inside the ring pipe 6b. The top of each gas inlet pipe 6a is threaded to the bottom of the air passage 1a1. The inner edge of the air passage 1a1 has an internal thread, and the end of each gas inlet pipe 6a has an external thread. The gas inlet pipes 6a are vertically extendable and retractable on the ring pipe 6b, allowing each gas inlet pipe 6a to be connected to the air passage 1a1 one by one. A gas inlet pipe 6c is located on the outer edge of the ring pipe 6b and is connected to a gas source. Gas is introduced into the ring pipe 6b through the gas source along the gas inlet pipe 6c. The gas entering the ring pipe 6b is blown out along the gas inlet pipes 6a, causing the sealing ring 7 to move upwards.

[0035] like Figure 10 As shown, the clamp rotation mechanism 4 includes a drive motor 4a, a gear 4b, a gear ring 4c, and a connecting seat 4d. The drive motor 4a is fixedly installed on the furnace body 1, the gear 4b is fixedly installed on the output end of the drive motor 4a, the rotating clamp 3 is fixedly installed on the connecting seat 4d, and the connecting seat 4d is rotatably installed on the lifting end of the clamp lifting mechanism 5. The gear ring 4c is fixedly connected to the connecting seat 4d and meshes with the gear 4b. When the drive motor 4a operates, the meshing of the gear 4b and the gear ring 4c will drive the connecting seat 4d to rotate, thereby enabling the rotating clamp 3 to connect the movable flange 2a and the fixed flange 1a.

[0036] Before the clamp rotation mechanism 4 rotates, the clamp lifting mechanism 5 drives the rotating clamp 3 upward. When the clamp lifting mechanism 5 pushes the rotating clamp 3 upward to its final position, the gear ring 4c and gear 4b remain engaged, ensuring that the drive motor 4a can still rotate the rotating clamp 3 after the clamp lifting mechanism 5 pushes it. To more stably drive the connecting seat 4d to rotate, the inner side of the connecting seat 4d is fitted against the outer edge of the furnace body 1, thus providing better guidance for the rotation of the connecting seat 4d. In embodiment two, the lifting column 8a is fixedly installed on the connecting seat 4d; that is, when the lifting column 8a rotates, it will drive the connecting seat 4d to rotate as well.

[0037] like Figure 11As shown, the clamp lifting mechanism 5 includes two lifting devices 5a and two arc-shaped slide rails 5c. Both arc-shaped slide rails 5c are fixedly installed at the bottom of the connecting seat 4d, and both lifting devices 5a are fixedly installed on both sides of the furnace body 1. A slider 5b is provided on the top of each lifting device 5a, and the slider 5b is slidably connected to the arc-shaped slide rail 5c. When the connecting seat 4d is pushed and rotated, it will cause the arc-shaped slide rail 5c to slide against the slider 5b. When the connecting seat 4d needs to move upward, the controller can control both lifting devices 5a to simultaneously push the connecting seat 4d upward. The lifting device 5a can be a hydraulic push rod or an electro-hydraulic push rod; for smaller loads, an electric push rod can also be used.

[0038] Example 2: The difference from Example 1 is that although the air supply mechanism 6 can push the sealing ring 7 upward, some pressure vessels are not equipped with an air supply mechanism 6. Adding an air supply mechanism 6 would incur significant costs. Furthermore, in humid environments, an air supply mechanism 6 would be easily damaged. Therefore, a device with equivalent functionality to the air supply mechanism 6 is needed to replace it for use in harsh environments, such as… Figure 7 and Figure 8 As shown, the lifting mechanism is a positioning drive mechanism 8, which includes a lifting column 8a, a pushing ring 8b, a lifting ring plate 8e, and multiple sliding columns 8d. The lifting ring plate 8e is located in an annular groove, and a sealing ring 7 is fixedly installed on the top of the lifting ring plate 8e. The tops of the multiple sliding columns 8d are fixedly connected to the lifting ring plate 8e, and the pushing ring 8b is fixedly installed on the bottom of the sliding column 8d. When the pushing ring 8b pushes upward, it will drive the lifting ring plate 8e to move vertically upward through the sliding column 8d, that is, push the flip foot 7a on the sealing ring 7 to seal the gap. Figure 7 As shown, the bottom of the lifting ring 8b is provided with a contact inclined plate 8c for contacting the lifting column 8a. The bottom of the contact inclined plate 8c is a sloping structure. The lifting column 8a is fixedly installed on the clamp rotation mechanism 4. like Figure 7 As shown, when the clamp lifting mechanism 5 pushes the rotating clamp 3 upward to engage with the movable flange 2a, the lifting column 8a does not contact the inclined surface of the contact inclined plate 8c. As the clamp rotation mechanism 4 drives the rotating clamp 3 to rotate, the top of the lifting column 8a moves to contact the inclined surface of the contact inclined plate 8c. With the continued rotation of the lifting column 8a, it pushes the lifting ring 8b vertically upwards through contact with the inclined surface, thus pushing the sealing ring 7 upwards. The number of lifting rings 8b and lifting columns 8a is not limited to one set; multiple sets can be distributed along the circumference of the positioning drive mechanism 8 to ensure uniform force distribution.

[0039] In the first embodiment, the furnace cover 2 is first placed on top of the furnace body 1. Then, the clamp lifting mechanism 5 pushes the rotating clamp 3 upward, so that the rotating clamp 3 wraps between the movable flange 2a and the fixed flange 1a. Finally, the clamp rotating mechanism 4 drives the rotating clamp 3 to rotate, so that the rotating clamp 3 engages between the movable flange 2a and the fixed flange 1a. After engagement, the gas supply mechanism 6 supplies gas into the gas passage 1a1, so that the sealing ring 7 is inserted into the gap between the furnace cover 2 and the furnace body 1 to achieve a seal.

[0040] For Embodiment 2: During the rotation of the rotating clamp 3, the lifting column 8a will be driven to move, causing the lifting ring plate 8e to push the flip foot 7a upward, so that the sealing ring 7 is inserted into the gap between the furnace cover 2 and the furnace body 1 to achieve sealing.

[0041] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A frequently rotatable quick-opening pressure vessel sealing structure, comprising a furnace body (1) and a furnace cover (2) covering the top of the furnace body (1), the furnace body (1) is provided with a fixed flange (1a), the furnace cover (2) is provided with a movable flange (2a), the outer edge of the furnace body (1) is sleeved with a rotating clamp (3) capable of fixing and clamping the fixed flange (1a) and the movable flange (2a), characterized in that, It also includes a clamp rotation mechanism (4), a clamp lifting mechanism (5), a lifting mechanism, and a sealing ring (7). The clamp lifting mechanism (5) and the clamp rotation mechanism (4) are both installed on the furnace body (1). The clamp lifting mechanism (5) is used to vertically lift the rotating clamp (3) to wrap the furnace body (1) and the furnace cover (2). The clamp rotation mechanism (4) is used to drive the rotating clamp (3) to rotate and clamp the fixed flange (1a) and the movable flange (2a). There is a gap between the movable flange (2a) and the fixed flange (1a). The fixed flange (1a) is provided with a sealing ring (7) that can slide vertically. The fixed flange (1a) is provided with an annular groove for the sealing ring (7) to slide vertically. The lifting mechanism is used to... The sealing ring (7) is lifted vertically upward. The cross-section of the sealing ring (7) is toothed. The top of the sealing ring (7) includes two flipped feet (7a), which are used to extend into the gaps on both sides of the ring groove. The bottom of the movable flange (2a) is fixedly provided with a limiting guide ring (2b), which has a triangular cross-sectional profile. The lifting mechanism is an air supply mechanism (6). The bottom of the sealing ring (7) is provided with multiple air passages (1a1) connected to the air supply mechanism (6). The air outlet of the air passage (1a1) is located at the bottom outer edge of the sealing ring (7). The flipped feet (7a) are limited by the limiting guide ring (2b) to ensure that the two flipped feet (7a) will not fold inward.

2. A pressure vessel sealing arrangement of frequent quick opening and rotation type as claimed in claim 1, wherein, The bottom of the annular groove is provided with a ventilation annular groove (1a2).

3. A pressure vessel sealing structure frequently rotatable and quickly openable according to claim 1, wherein The gas supply mechanism (6) includes a ring pipe (6b) and multiple gas inlet pipes (6a). The multiple gas inlet pipes (6a) are rotatably installed inside the ring pipe (6b). The top of the gas inlet pipe (6a) is threaded to the bottom of the gas passage (1a1). A second gas inlet pipe (6c) is provided on the outer edge of the ring pipe (6b). The second gas inlet pipe (6c) is connected to the gas source.

4. The pressure vessel sealing structure that can be frequently rotated and quickly opened as described in claim 1, characterized in that, The clamp rotation mechanism (4) includes a drive motor (4a), a gear (4b), a gear ring (4c), and a connecting seat (4d). The drive motor (4a) is fixedly installed on the furnace body (1), the gear (4b) is fixedly installed on the output end of the drive motor (4a), the rotating clamp (3) is fixedly installed on the connecting seat (4d), the connecting seat (4d) is rotatably installed on the lifting end of the clamp lifting mechanism (5), the gear ring (4c) is fixedly connected to the connecting seat (4d), and the gear ring (4c) meshes with the gear (4b). When the clamp lifting mechanism (5) pushes the rotating clamp (3) upward to the final position, the toothed ring (4c) and the gear (4b) remain engaged.

5. The pressure vessel sealing structure capable of frequent rotation and quick opening as described in claim 4, characterized in that, The clamp lifting mechanism (5) includes two lifting devices (5a) and two arc-shaped slide rails (5c). The two arc-shaped slide rails (5c) are fixedly installed at the bottom of the connecting seat (4d). The two lifting devices (5a) are fixedly installed on both sides of the furnace body (1). The top of the lifting device (5a) is provided with a slider (5b), and the slider (5b) is slidably connected to the arc-shaped slide rail (5c).

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