Partition plate sealing structure of high-pressure heater

Abstract

The invention relates to the related technical field of high-pressure heaters, in particular to a high-pressure heater partition plate sealing structure which comprises a partition plate body used for separating a U-shaped tube bundle, a hole used for allowing any U-shaped tube in the U-shaped tube bundle to penetrate through is formed in the partition plate body, and a sealing unit is arranged in the hole. The sealing unit is composed of two component units of the same structure, each component unit comprises an inner-layer seal, a second-stage seal and a third-layer seal, an outer ring cover is arranged at one end of each third-layer seal, and an inner ring block fixed to the corresponding end of each inner-layer seal is arranged in each outer ring cover; a mounting and dismounting mechanism; a dislocation assembly; and an adjusting assembly. The sealing reliability is ensured, leakage between channels in different areas is prevented, two component units of the same structure can be conveniently mounted and dismounted, the maintenance convenience and reliability of a redundant sealing system are improved, replacement is easy, and even if part of the redundant sealing system is damaged, system operation can be rapidly recovered.

Description

Technical Field

[0001] The present invention relates to the technical field related to high-pressure heaters, and specifically relates to a partition sealing structure for high-pressure heaters. Background Art

[0002] A high-pressure heater is a device used to heat fluids, and is usually used in industrial applications that require high-temperature and high-pressure environments. It raises the boiling point of the fluid during the heating process by increasing the pressure, so that the fluid can be heated at a higher temperature.

[0003] Currently, in high-pressure heaters, U-shaped tubes generally pass through partitions (where the diameter of the U-shaped tubes ranges from 150 mm to 250 mm or larger, suitable for high-flow or high-pressure systems), and are sealed in the holes of the partitions using a sealing structure, so that the fluids on both sides of the U-shaped tubes can exchange heat under the protection of the partitions. The partition plays a blocking role here, preventing the fluids on both sides from mixing, reducing heat loss and optimizing the fluid flow path.

[0004] However, some existing sealing structures are often difficult to maintain long-term stability when facing extreme working conditions (such as high temperature, high pressure or corrosive environment), and are prone to leakage or sealing failure, reducing the reliability and safety of the system. Therefore, it is necessary to design a sealing structure that can be quickly replaced and has redundant protection to improve the maintenance convenience and reliability of the sealing structure.

[0005] The above content is only used to assist in understanding the technical solution of the present invention, and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0006] The purpose of the present invention is to solve the above deficiencies and provide a partition sealing structure for high-pressure heaters.

[0007] To solve the above technical problems, the present invention adopts the following technical solution: A partition sealing structure for a high-pressure heater, including a partition plate body arranged in the high-pressure heater and used for separating the U-shaped tube bundle. A hole for any U-shaped tube in the U-shaped tube bundle to pass through is arranged on the partition plate body. A sealing unit is arranged in the hole at the outer joint of the U-shaped tube. The sealing unit is composed of two semi-circular component units with the same structure. Each component unit includes an inner layer seal, a secondary seal, and a third layer seal arranged in sequence from the inside to the outside. A plurality of air cavities separated circumferentially and filled with gas are arranged in the secondary seal. One end of the third layer seal is provided with an outer ring cover, and an inner ring block fixed to the corresponding end of the inner layer seal is arranged in the outer ring cover;

[0008] The disassembly and assembly mechanism includes a ring plate correspondingly arranged between the outer ring cover and the inner ring block, and two limiting components symmetrically arranged on the inner wall of the ring plate; when the two component units are combined, the ring plate is axially moved along the hole of the component unit, and the ring plate is rotated between the outer ring cover and the inner ring block, so that the two butt-jointed component units are detachably connected;

[0009] The dislocation component is arranged inside the ring plate and is used to rotate the secondary seal to stagger the joints between the inner layer seal, the secondary seal, and the third layer seal of the two butt-jointed component units;

[0010] The adjusting component is correspondingly arranged at the end of the air cavity and is used to adjust the internal pressure of the air cavity so that the sealing unit closely fits at the joint of the hole.

[0011] Further, the limiting component includes a limiting block arranged on the inner wall of the ring plate, a vertical groove adapted to the vertical movement of the limiting block is arranged on the inner ring block, and a limiting groove is arranged along the circumferential direction of the bottom of the vertical groove on the inner ring block;

[0012] The limiting groove is used to limit the limiting block during rotation.

[0013] Further, the dislocation component includes an arc-shaped outer tooth section correspondingly arranged at the end of the secondary seal, a gear meshed with the arc-shaped outer tooth section, and an arc-shaped inner tooth section fixed on the inner wall of the outer ring cover meshed with the other side of the gear relative to the arc-shaped outer tooth section;

[0014] The acting force is transmitted through the ring plate to drive the secondary seal to rotate, and the meshing transmission of the arc-shaped outer tooth section, the gear, and the arc-shaped inner tooth section is sequentially passed through to drive the joints between the secondary seal and the third layer seal to be staggered.

[0015] Further, a first moving groove is arranged along the circumferential direction at the inner bottom of the outer ring cover, a moving block moving in the first moving groove is arranged on the end face of the gear, a jack is arranged on the other end face of the gear, a second moving groove with the same arc length as the first moving groove is arranged on one side of the ring plate, and a plug pin is movably arranged in the second moving groove;

[0016] The plug pin is inserted into the jack in a matching manner, and through the first moving groove and the second moving groove installed by shifting the two sides of the gear, the gear rotates and transmits the acting force between the arc-shaped outer tooth section and the arc-shaped inner tooth section.

[0017] Further, the adjusting assembly includes a sleeve disposed at one end of the air chamber, a piston slidably disposed in the sleeve and partitioning the interior of the sleeve into two chambers, a connecting rod disposed at the outer end of the piston, a cover sleeved on the outer wall of the connecting rod outside the piston, and a second spring fixed to the end face of the piston and disposed inside the cover;

[0018] The second spring is sleeved on the connecting rod. When there is no external force squeezing the second spring, it will release and push the piston to move by restoring its original shape.

[0019] Further, a positioning block is disposed at one end of the connecting rod away from the piston. A positioning groove adapted to be inserted with the positioning block is correspondingly disposed on one surface of the ring plate. The positioning block is inserted into the positioning groove in an adapted manner to push the piston to move in the sleeve, and gas is pressed in to compensate for the air pressure that is not fully fitted to the hole.

[0020] Further, a resisting block is disposed on one side of the joint end face of the inner ring block. One end of the resisting block extends into the limiting groove and is provided with a first spring. A clamping groove is disposed at the outer end of the resisting block. An elastic buckle is disposed on the other side of the joint end face of the inner ring block. When the two inner ring blocks are butted, the clamping groove and the elastic buckle on the corresponding side are clamped with each other to limit and connect the two butted inner ring blocks.

[0021] Further, an activity groove communicating with the vertical groove and distributed along the circumferential direction of the inner ring block is disposed above the limiting groove. The limiting assembly further includes a shielding plate that moves circumferentially in the activity groove;

[0022] The shielding plate is disposed on one side of the limiting block and located on the inner wall of the ring plate for opening and closing the top opening of the vertical groove.

[0023] Further, T-shaped sliders and T-shaped chutes that are axially slidably adapted are respectively disposed at both ends of the joints between the inner layer seal, the secondary seal, and the third layer seal.

[0024] Compared with the prior art, the present invention has the following beneficial effects: Through the design of the triple redundant sealing system composed of the inner layer seal, the secondary seal, and the third layer seal, as well as the installation and removal mechanism, the triple redundant sealing system ensures the reliability of the seal, prevents leakage between channels in different regions, and enables the convenient installation and removal of two component units with the same structure, improving the maintainability and reliability of the redundant sealing system, facilitating replacement. Even if partial damage occurs, the system operation can be quickly restored. Also, through the setting of the dislocation component and the adjustment component, during the installation of the two semi-component units, the joints between the inner layer seal, the secondary seal, and the third layer seal can be staggered, reducing pressure concentration, helping to disperse the stress generated by external loading, reducing stress concentration, improving the sealing effect, and at the same time adjusting the internal pressure of the air cavity during installation to further help the sealing unit better fit the hole joint, thereby achieving a more effective sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0026] Figure 1 It is a three-dimensional structure diagram of one perspective of the overall application of an embodiment of the present invention on a partition board body;

[0027] Figure 2 It is a three-dimensional structure diagram of one perspective of the overall of an embodiment of the present invention;

[0028] Figure 3 It is a three-dimensional structure diagram of one perspective of a component unit of an embodiment of the present invention;

[0029] Figure 4 It is a three-dimensional structure diagram of another perspective of a component unit of an embodiment of the present invention;

[0030] Figure 5 It is a three-dimensional structure diagram of one perspective of an embodiment of the present invention where the third layer seal is not provided on one side;

[0031] Figure 6 It is a three-dimensional structure diagram of one perspective of an embodiment of the present invention where the third layer seal and the secondary seal are not provided on one side;

[0032] Figure 7 For Figure 6 The enlarged structure schematic diagram at A in

[0033] Figure 8 It is a three-dimensional structure diagram of one perspective of the installation and removal mechanism of an embodiment of the present invention;

[0034] Figure 9Stereoscopic structure diagram of another perspective of the installation and disassembly mechanism according to an embodiment of the present invention;

[0035] Figure 10 Stereoscopic structure diagram of one perspective of a partial part of the inner layer seal according to an embodiment of the present invention;

[0036] Figure 11 Schematic connection structure diagram of the misalignment component and the adjustment component installed between the outer ring cover and the inner ring block according to an embodiment of the present invention;

[0037] Figure 12 Enlarged structure diagram of the adjustment component according to an embodiment of the present invention.

[0038] In the figure: 100, partition plate body; 101, U-shaped tube bundle; 200, sealing unit; 1, inner layer seal; 2, secondary seal; 3, third layer seal; 4, outer ring cover; 41, first moving groove; 5, inner ring block; 6, installation and disassembly mechanism; 61, ring plate; 62, limiting block; 63, shielding plate; 64, positioning groove; 65, second moving groove; 66, plug pin; 7, misalignment component; 71, arc-shaped outer tooth section; 72, gear; 73, arc-shaped inner tooth section; 74, moving block; 75, jack; 8, adjustment component; 81, sleeve; 82, piston; 83, connecting rod; 831, positioning block; 84, cover; 85, second spring; 9, vertical groove; 91, limiting groove; 92, abutting block; 921, clamping groove; 93, first spring; 94, moving groove; 95, elastic buckle; 10, T-shaped slider; 11, T-shaped sliding groove. Detailed implementation manners

[0039] Next, the technical solutions in the embodiments of the present invention will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] As Figures 1-12As shown in the figure, the high-pressure heater partition sealing structure of the present invention includes a partition plate body 100 disposed inside the high-pressure heater and used for separating the U-shaped tube bundle 101. A hole for any U-shaped tube in the U-shaped tube bundle 101 to pass through is provided on the partition plate body 100. A sealing unit 200 is provided in the hole at the external joint of the U-shaped tube. The sealing unit 200 is composed of two semi-circular component units with the same structure. Each component unit includes an inner layer seal 1, a secondary seal 2, and a third layer seal 3 arranged in sequence from the inside to the outside. A plurality of air cavities separated circumferentially and filled with gas are provided in the secondary seal 2. One end of the third layer seal 3 is provided with an outer ring cover 4, and an inner ring block 5 fixed to the corresponding end of the inner layer seal 1 is provided inside the outer ring cover 4;

[0041] The installation and disassembly mechanism 6 includes a ring plate 61 correspondingly arranged between the outer ring cover 4 and the inner ring block 5 and two limiting components symmetrically arranged on the inner wall of the ring plate 61; when the two component units are combined, the ring plate 61 is moved axially along the hole, and the ring plate 61 is rotated between the outer ring cover 4 and the inner ring block 5, so that the two butted component units are detachably connected;

[0042] The dislocation component 7 is arranged inside the ring plate 61 and is used to rotate the secondary seal 2 to stagger the joints between the inner layer seal 1, the secondary seal 2, and the third layer seal 3 in the two butted component units;

[0043] The adjustment component 8 is correspondingly arranged at the end of the air cavity and is used to adjust the internal pressure of the air cavity so that the sealing unit 200 closely fits at the joint of the hole.

[0044] In specific implementation, inside the high-pressure heater, the partition plate body 100 is used to separate the internal fluid of the U-shaped tube bundle 101 into two parts placed in the superheated steam cooling section and the drain cooling section, and the sealing unit 200 is used to seal and fit at the joint between the hole machined through turning on the partition plate body 100 and the tube wall of any U-shaped tube in the U-shaped tube bundle 101 to prevent leakage between different area channels;

[0045] Through the triple redundant sealing system composed of the inner layer seal 1, the secondary seal 2, and the third layer seal 3 sequentially sleeved from the inside to the outside included in the two component units with the same structure, the reliability of the seal is ensured, and leakage between different area channels is prevented;

[0046] Also, through the outer ring cover 4 welded to one end of the third-layer seal 3, the inner ring block 5 welded to one end of the inner seal 1, and the installation and removal mechanism 6 detachably installed in the area between the outer ring cover 4 and the inner ring block 5, the convenient installation and removal of two component units with the same structure can be achieved, improving the maintenance convenience and reliability of the redundant seal system, enabling easy replacement, and even if partial damage occurs, the system operation can be quickly restored;

[0047] The dislocation assembly 7 installed inside the ring plate 61 can stagger the joints between the inner seal 1, the secondary seal 2, and the third-layer seal 3 during the process of fixing the two butt-jointed component units, reducing pressure concentration, helping to disperse the stress generated by external loading, reducing stress concentration, and improving the sealing effect.

[0048] It should be noted that a plurality of air cavities evenly divided along the circumferential direction inside the secondary seal 2, and the adjustment assembly 8 installed at the corresponding ends of the air cavities can adjust the internal pressure of the air cavities during installation, further helping the sealing unit 200 to better fit the hole joints, thereby achieving a more effective sealing effect.

[0049] It should be noted that the inner seal 1 and the third-layer seal 3 are respectively made of polytetrafluoroethylene with high temperature and corrosion resistance and a metal rubber composite material with high pressure resistance.

[0050] In one embodiment, the limiting assembly includes a limiting block 62 provided on the inner wall of the ring plate 61, a vertical groove 9 adapted to the vertical movement of the limiting block 62 is provided on the inner ring block 5, and a limiting groove 91 is provided along the circumferential direction of the inner ring block 5 at the bottom of the vertical groove 9;

[0051] The limiting groove 91 is used to limit the limiting block 62 during rotation. With such a design, by symmetrically welding two limiting blocks 62 on the inner wall of the ring plate 61, and the installation positions of the two limiting blocks 62 respectively corresponding to the two component units, the vertical groove 9 machined on the inner ring block 5, and the limiting groove 91 communicated at the bottom of the vertical groove 9 and machined along the circumferential direction of the inner ring block 5, after the limiting block 62 vertically passes through the vertical groove 9 and is placed at the bottom, it rotates away from the vertical groove 9 in the limiting groove 91, enabling the locking and fixing of the two butt-jointed component units, and realizing the easy installation and disassembly separation of the two butt-jointed component units and convenient maintenance.

[0052] In one embodiment, the dislocation assembly 7 includes an arc-shaped outer tooth segment 71 correspondingly provided at the end of the secondary seal 2, a gear 72 meshingly connected to the arc-shaped outer tooth segment 71, and an arc-shaped inner tooth segment 73 fixed to the inner wall of the outer ring cover 4 meshing with the other side of the gear 72 relative to the arc-shaped outer tooth segment 71;

[0053] The acting force is transmitted through the ring plate 61 to drive the secondary seal 2 to rotate, and successively through the meshing transmission of the arc-shaped outer tooth section 71, the gear 72, and the arc-shaped inner tooth section 73, to drive the joints between the secondary seal 2 and the third-layer seal 3 to stagger. With such a design, through the arc-shaped outer tooth section 71 welded to the end of the secondary seal 2, the gear 72 meshing with the tooth structure on the arc-shaped outer tooth section 71, and the arc-shaped inner tooth section 73 meshing with the other side of the gear 72, when an acting force is applied to drive the secondary seal 2 to rotate, the acting force will be transmitted through the arc-shaped outer tooth section 71 welded to the end of the secondary seal 2 and the gear 72 meshing with the arc-shaped outer tooth section 71 to drive the arc-shaped inner tooth section 73 to rotate in the opposite direction, and then drive the secondary seal 2 and the third-layer seal 3 welded to the arc-shaped outer tooth section 71 and the arc-shaped inner tooth section 73 respectively to rotate away from each other, so that the joints between the secondary seal 2 and the third-layer seal 3 are staggered, and further the joints between the inner-layer seal 1, the secondary seal 2, and the third-layer seal 3 are staggered, reducing pressure concentration, which can help disperse the stress generated by external loading, reduce stress concentration, and improve the sealing effect.

[0054] In one embodiment, a first shifting groove 41 is circumferentially arranged at the inner bottom of the outer ring cover 4. A shifting block 74 that moves in the first shifting groove 41 is arranged on the end face of the gear 72. A jack 75 is arranged on the other end face of the gear 72. A second shifting groove 65 having the same arc length as the first shifting groove 41 is arranged on one face of the ring plate 61. A pin 66 is movably arranged in the second shifting groove 65.

[0055] The pin 66 is inserted into the jack 75 in a matching manner. Through the first shifting groove 41 and the second shifting groove 65 installed with phase shift on both sides of the gear 72, the gear 72 rotates between the arc-shaped outer tooth section 71 and the arc-shaped inner tooth section 73 to transmit the acting force. With such a design, through a first shifting groove 41 welded to the inner bottom of the outer ring cover 4, the shifting block 74 that is guided to move in the first shifting groove 41 and welded to the end of the central shaft inserted through the gear 72, as well as the jack 75 at the other end of the central shaft inserted through the gear 72 and the pin 66 correspondingly inserted into the jack 75, since the pin 66 and the shifting block 74 respectively inserted and adapted at both ends of the central shaft inserted through the gear 72 are slidably installed on the corresponding end faces, there will be no interference movement during the transmission of the acting force among the arc-shaped outer tooth section 71, the gear 72, and the arc-shaped inner tooth section 73, ensuring that the joints between the secondary seal 2 and the third-layer seal 3 can be staggered smoothly.

[0056] In one embodiment, the adjusting assembly 8 includes a sleeve 81 provided at one end of the air cavity, a piston 82 slidably disposed within the sleeve 81 and dividing the interior of the sleeve 81 into two chambers, a connecting rod 83 provided at the outer end of the piston 82, a cover 84 sleeved on the outer wall of the connecting rod 83 outside the piston 82, and a second spring 85 provided inside the cover 84 and fixed to the end face of the piston 82;

[0057] The second spring 85 is sleeved on the connecting rod 83. When there is no external force squeezing the second spring 85, it will release and push the piston 82 to move by restoring its original shape. With such a design, through the sleeve 81 connected and installed at one upper end of the air cavity and the piston 82 slidably installed within the sleeve 81, when a force is applied to the connecting rod 83 welded to the top of the piston 82, the piston 82 will move within the sleeve 81, increasing the air cavity pressure and fitting the sealing joint. If the air cavity pressure changes due to external factors, the position of the piston 82 within the sleeve 81 will be adjusted accordingly, achieving the effect of changing the air cavity pressure.

[0058] It should be noted that the cover 84 sleeved on the outer wall of the connecting rod 83 and the second spring 85 sleeved on the connecting rod 83 between the cover 84 and the piston 82 can store energy and will restore its original shape when released to push the piston 82 to move within the sleeve 81.

[0059] Preferably, an electric part for driving the piston 82 to move is installed on the connecting rod 83. The electric part is electrically connected to a sensor. The sensor monitors the sealing state in real time and feeds back to the electric part to push the piston 82 to move outward or inward within the sleeve 81, thereby changing the air cavity pressure.

[0060] In one embodiment, a positioning block 831 is provided at one end of the connecting rod 83 away from the piston 82. A positioning groove 64 adapted to be inserted with the positioning block 831 is correspondingly provided on one surface of the ring plate 61. The positioning block 831 is inserted into the positioning groove 64 in an adapted manner to push the piston 82 to move within the sleeve 81 and press in gas to compensate for the air pressure that is not fully fitted in the hole. With such a design, through the positioning block 831 welded to one end of the connecting rod 83 away from the piston 82 and the corresponding positioning groove 64 welded on the ring plate 61, the positioning block 831 and the positioning groove 64 are inserted in an adapted manner, enabling the ring plate 61 to be pressed in the groove between the outer ring cover 4 and the inner ring block 5 to compensate for the air pressure that is not fully fitted in the hole, ensuring a good sealing effect;

[0061] When rotating, a force is applied to the secondary seal 2 connected thereto and it rotates through the adjusting assembly 8.

[0062] In one embodiment, a blocking block 92 is provided on one side of the joint end face of the inner ring block 5. One end of the blocking block 92 extends into the limiting groove 91 and is provided with a first spring 93. A clamping groove 921 is provided at the outer end of the blocking block 92. An elastic buckle 95 is provided on the other side of the joint end face of the inner ring block 5. When the two inner ring blocks 5 are butted, the clamping groove 921 and the elastic buckle 95 on the corresponding side are clamped with each other to limit and connect the two butted inner ring blocks 5. With such a design, through the blocking block 92 supported and connected by the first spring 93 installed at one end in the limiting groove 91, the clamping groove 921 welded on the outer side of the blocking block 92 and located on one side of the end face of the inner ring block 5, and the elastic buckle 95 located on the other side of the end face of the inner ring block 5, when the limiting block 62 moves along its path in the limiting groove 91 for limiting, the limiting block 62 will contact and push outwards the blocking block 92 connected to the first spring 93. At this time, the elastic buckle 95 and the clamping groove 921 will be adaptively clamped and connected, so that the joint between the two butted inner ring blocks 5 is fixed in the direction perpendicular to the joint.

[0063] In one embodiment, an activity groove 94 communicating with the vertical groove 9 and distributed along the circumferential direction of the inner ring block 5 is provided on the upper side of the limiting groove 91. The limiting assembly further includes a shielding plate 63 that moves circumferentially in the activity groove 94;

[0064] The shielding plate 63 is arranged on one side of the limiting block 62 and located on the inner wall of the ring plate 61 for opening and closing the top opening of the vertical groove 9. With such a design, through the activity groove 94 machined by turning on the upper side of the limiting groove 91 and communicating with the vertical groove 9 and distributed along the circumferential direction of the inner ring block 5, and the shielding plate 63 that moves in the activity groove 94 and is welded on the inner wall of the ring plate 61, the top opening of the vertical groove 9 can be closed simultaneously during the locking process.

[0065] In one embodiment, T-shaped sliders 10 and T-shaped chutes 11 that are axially slidably adapted are respectively provided at both ends of the joints between the inner layer seal 1, the secondary seal 2, and the third layer seal 3. With such a design, through the T-shaped sliders 10 and T-shaped chutes 11 respectively installed at both ends of the joints between the inner layer seal 1, the secondary seal 2, and the third layer seal 3, the sliding fit of the T-shaped sliders 10 and the T-shaped chutes 11 can axially stagger and separate the two butted component unit layers of the seal unit 200, and the installation and disassembly are simple.

[0066] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

[0067] It should be noted that if there are directional indications involved in the embodiments of the present invention, such as up, down, left, right, front, back..., then the directional indications are only used to explain the relative positional relationship, movement conditions, etc. between components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0068] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text includes three parallel scenarios. Taking "A and / or B" as an example, it includes Scenario A, or Scenario B, or the scenario where both A and B are satisfied simultaneously. In addition, "a plurality of" means two or more. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A high-pressure heater partition sealing structure, comprising a partition plate body (100) arranged in the high-pressure heater and used to separate a U-shaped tube bundle (101), the partition plate body (100) being provided with a hole for any U-shaped tube in the U-shaped tube bundle (101) to pass through, a sealing unit (200) being provided in the hole and at an outer seam of the U-shaped tube, characterized in that: The sealing unit (200) comprises two semicircular component units of the same structure, each of which comprises an inner seal (1), a secondary seal (2), and a third seal (3) which are arranged in sequence from the inside to the outside, the secondary seal (2) is provided with a plurality of circumferentially separated air cavities and filled with gas, one end of the third seal (3) is provided with an outer ring cover (4), and the outer ring cover (4) is provided with an inner ring block (5) fixed to a corresponding end of the inner seal (1); The mounting and disassembling mechanism (6) comprises a ring plate (61) correspondingly arranged between the outer ring cover (4) and the inner ring block (5) and two limit assemblies symmetrically arranged on the inner wall of the ring plate (61); when the two component units are assembled, the ring plate (61) is moved along the axial direction of the hole, and the ring plate (61) is rotated between the outer ring cover (4) and the inner ring block (5), so that the two butted component units can be detachably connected; a dislocation assembly (7), arranged on the inner side of the ring plate (61), and used for rotating the secondary seal (2) so as to displace the joints between the inner seal (1), the secondary seal (2), and the third seal (3) in the two butted component units; An adjustment component (8) is correspondingly arranged at the end of the air cavity and is used to adjust the internal pressure of the air cavity so that the sealing unit (200) fits tightly at the seam of the hole.

2. The high pressure heater partition sealing structure according to claim 1, characterized in that: The limiting assembly comprises a limiting block (62) arranged on the inner wall of the ring plate (61); a vertical groove (9) adapted for vertical movement of the limiting block (62) is arranged on the inner ring block (5); a limiting groove (91) is arranged at the bottom of the vertical groove (9) along the circumference of the inner ring block (5); The limiting groove (91) is used to limit the limiting block (62) in rotation.

3. The high pressure heater partition sealing structure according to claim 1, characterized in that: The offset assembly (7) comprises an arcuate outer tooth segment (71) correspondingly arranged at the end of the secondary seal (2), a gear (72) meshingly connected to the arcuate outer tooth segment (71), and an arcuate inner tooth segment (73) fixed to the inner wall of the outer ring cover (4) meshingly engaged with the other side of the gear (72) relative to the arcuate outer tooth segment (71); The secondary seal (2) is driven to rotate by transmitting a force through the ring plate (61), and the joints between the secondary seal (2) and the third seal (3) are driven to stagger through meshing transmission of the arc-shaped outer tooth segment (71), the gear (72) and the arc-shaped inner tooth segment (73).

4. The high pressure heater partition sealing structure according to claim 3, characterized in that: A first shift groove (41) is provided at the inner bottom of the outer ring cover (4) along the circumferential direction, a shift block (74) is provided at the end surface of the gear (72) and is movable in the first shift groove (41), a plug hole (75) is provided at the other end surface of the gear (72), a second shift groove (65) having the same arc length as the first shift groove (41) is provided on one side of the ring plate (61), and a latch (66) is movably provided in the second shift groove (65); The latch pin (66) is adapted to be inserted into the insertion hole (75), and the gear (72) is rotated to transmit the force between the arc-shaped outer tooth segment (71) and the arc-shaped inner tooth segment (73) through the first displacement groove (41) and the second displacement groove (65) installed on both sides of the gear (72) in a phase-shifted manner.

5. The high pressure heater partition sealing structure according to claim 1, characterized in that: The regulating assembly (8) comprises a sleeve (81) arranged at an end of the air cavity, a piston (82) slidably arranged in the sleeve (81) and dividing the interior of the sleeve (81) into two chambers, a connecting rod (83) is arranged at the outer end of the piston (82), a sealing cover (84) sleeved on the outer wall of the connecting rod (83) is arranged outside the piston (82), and a second spring (85) fixed to the end surface of the piston (82) is arranged inside the sealing cover (84); The second spring (85) is sleeved on the connecting rod (83), and when there is no external force pressing the second spring (85), it will be released and restored to its original shape to push the piston (82) to move in the sleeve (81).

6. The high pressure heater partition sealing structure according to claim 5, characterized in that: A positioning block (831) is provided on one end of the connecting rod (83) away from the piston (82), and a positioning groove (64) adapted to be inserted into the positioning block (831) is correspondingly provided on one side of the ring plate (61). The positioning block (831) is adapted to be inserted into the positioning groove (64) to push the piston (82) to move in the sleeve (81), and the gas is pressed in to compensate for the gas pressure that is not completely fitted in the hole.

7. The high pressure heater partition sealing structure according to claim 2, characterized in that: A stop block (92) is provided on one side of the joint end surface of the inner ring block (5), one end of the stop block (92) extends into the limiting groove (91) and is provided with a first spring (93), a clamping groove (921) is provided on the outer end of the stop block (92), and an elastic buckle (95) is provided on the other side of the joint end surface of the inner ring block (5). When the two inner ring blocks (5) are butt-jointed, the clamping groove (921) and the elastic buckle (95) on the corresponding side are mutually engaged to limit the connection of the two inner ring blocks (5) that are joined.

8. The high pressure heater partition sealing structure according to claim 2, characterized in that: The upper side of the limiting groove (91) is provided with a movable groove (94) which is in communication with the vertical groove (9) and distributed along the circumference of the inner ring block (5); the limiting assembly also includes a shielding plate (63) which moves circumferentially in the movable groove (94); The shielding plate (63) is arranged on one side of the limiting block (62) and is located on the inner wall of the ring plate (61), and is used to open and close the top opening of the vertical groove (9).

9. The high pressure heater partition sealing structure according to claim 1, characterized in that: Both ends of the joints between the inner seal (1), the secondary seal (2) and the third seal (3) are respectively provided with a T-shaped sliding block (10) and a T-shaped sliding groove (11) which are adapted to slide along the axial direction.

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