A reinforcing device for a boiler drum guide door of a thermal power plant and a construction method thereof

Abstract

The application discloses a reinforcing device for a guide door of a boiler drum of a thermal power plant and a construction method, and relates to the technical field of industrial boilers. The first receiving end is fixed on the guide door shell, the first connecting end is fixed on the guide door cover plate, and the first connecting end rotates on the first receiving end in a hinged connection mode to maintain the connection relationship between the two components. When the guide door cover plate is closed on the guide door shell, the two are fixed by the fixing mechanism to maintain the stability of the two components, to block the manhole door during normal operation of the boiler, to close the opening, to firmly lock the internal high-temperature and high-pressure steam-water medium, to prevent steam and boiler water from leaking outward, to maintain the rated working pressure of the drum, and to set the sealing device inside the guide door shell to further improve the sealing performance of the guide door on the basis of the sealing of the guide door shell and the guide door cover plate.

Description

Technical Field

[0001] This invention relates to the field of industrial boiler technology, specifically to a reinforcement device and construction method for the steam drum guide valve of a thermal power plant boiler. Background Technology

[0002] Steam drum guide doors, also known as steam drum manhole doors, are pressure-bearing and sealed maintenance doors opened on the steam drum shell of high-pressure boilers in thermal power plants. During operation, they rely on the door cover, sealing gaskets, and locking structure to achieve airtight pressure. After shutdown, they can be opened to allow personnel to enter the steam drum to complete cleaning and maintenance work. Under long-term pressure conditions, door deformation and sealing leakage are prone to occur.

[0003] Steam drum guide valves are subjected to high-temperature and high-pressure media inside the boiler for a long time. Pressure fluctuations can easily cause deformation of the door cover and frame, and gaps in the sealing surface can lead to media leakage. At the same time, alternating loads can cause the locking fasteners to loosen and fail. Reinforcing can improve the overall structural rigidity of the guide valve, evenly distribute the pressure stress, suppress deformation and leakage, and ensure the safe operation of the unit and the reliability of the seal.

[0004] In the existing technology, the cover plate of the boiler drum guide door in thermal power plant has insufficient strength and is prone to deformation, which affects the sealing performance between components. Secondly, there are few sealing measures, which makes it easy to cause irreparable leakage. In addition, the installation and disassembly of components are relatively cumbersome, resulting in low operation efficiency. Therefore, a new design has been carried out to address these issues. Summary of the Invention

[0005] To address the aforementioned problems, the present invention provides the following technical solution: a reinforcement device and construction method for boiler drum guide doors in thermal power plants, comprising:

[0006] The guide door housing has an annular housing structure and a fixed base disposed at the bottom of the annular housing. A sealing device is fixedly connected to the lower side of the inner wall of the guide door housing, and a first receiving end is fixedly connected to the outer side of the guide door housing. A first connecting end is rotatably connected to the inner side of the first receiving end.

[0007] A guide door cover plate has a disc-shaped structure. The circumference of the guide door cover plate is fixedly connected to the outer side of the first connecting end. A fixing mechanism is provided between the guide door housing and the guide door cover plate.

[0008] The sealing device includes:

[0009] The sealing plate has a ring-shaped shell structure. The outer circumference of the sealing plate is fixedly connected to the inner wall of the guide door shell. A sliding groove is opened inside the sealing plate.

[0010] A filling block having a funnel shell structure, with a support rod fixedly connected to the center of the filling block, and a support plate fixedly connected to the top of the support rod and the upper side of the inner wall of the filling block, the support plate penetrating the filling block and extending outward, and the support plate fitting into a groove.

[0011] The sealing device further includes:

[0012] A hinge block is disposed on the top of the sealing plate, and the bottom of the hinge block is fixedly connected to the top of the sealing plate.

[0013] A sealing cover plate has a cylindrical block structure. The outer side of the sealing cover plate is fixedly connected to a hinge block. A second connecting end is fixedly connected to the outer side of the sealing cover plate away from the hinge block. A second receiving end is fitted to the outer side of the second connecting end. The outer side of the second receiving end and the second connecting end are fitted with a pin.

[0014] The sealing cover plate has a cover plate groove on the side near the filling block, and a support frame is fixedly connected to the inner wall of the cover plate groove.

[0015] A hand-held block is fixedly connected to the center of the top of the sealing cover. There are two hand-held blocks, which are mirror-symmetrically arranged on the top of the sealing cover. Both hand-held blocks have cutouts on their outer surfaces.

[0016] The top center of the guide door cover is rotatably connected to a first connecting shaft, the top of the first connecting shaft is fixedly connected to a first handle, and the bottom of the first connecting shaft is fixedly connected to a rotating rod, which is pluggable and adaptable to the hand block.

[0017] A second connecting shaft is rotatably connected to the top edge of the guide door cover plate. A second handle is fixedly connected to the top of the second connecting shaft. A baffle is fixedly connected to the bottom of the second connecting shaft. A barrier ring is fixedly connected to the upper side of the inner wall of the guide door housing. A rubber block is fixedly connected to the top of the baffle near the barrier ring.

[0018] The top of the guide door housing has a housing groove, and a spring strip is fixedly connected to the bottom of the inner wall of the housing groove. An annular block is fixedly connected to the outer side of the spring strip, and a wear-resistant rubber block is fixedly connected to the top of the annular block. The bottom of the guide door cover plate has a cover plate slot corresponding to the housing groove, and the outer side of the annular block is slidably connected to the inner wall of the housing groove.

[0019] The fixing mechanism includes a fixing port, a rotating block is rotatably mounted inside the fixing port, a screw is fixedly connected to the outside of the rotating block, and a fixing block is threaded on the upper side of the screw. Tightening the fixing block can press it downward against the upper end face of the receiving port, thereby locking the fixing block and the receiving port together.

[0020] A method for reinforcing the steam drum guide valve of a thermal power plant boiler includes the following steps:

[0021] The first step is installation. The filler block is used to align the support plate with the notch of the sealing plate. Then, the support plate is inserted into the groove. Finally, the support plate is rotated to misalign with the notch of the sealing plate, thereby fixing the component and quickly sealing the guide door.

[0022] The second step is to seal the cover. The sealing cover plate drives the second connecting end to fit into the second receiving end. Then, the pin passes through the second connecting end and the second receiving end to achieve the function of quick sealing and maintain the normal operation of the boiler.

[0023] The third step is reinforcement. The guide door cover is used to close the guide door housing. During the closing process, the rotating rod is driven into the interior of the guide door housing. The rotating rod and the hand block are arranged in a staggered manner. Then, the rotating rod is controlled to rotate by the first grip, so that the rotating rod and the hand block are engaged. After the guide door cover is closed, the rotating rod supports the sealing cover, thereby reinforcing the sealing effect of the component during the sealing process.

[0024] This invention provides a reinforcement device and construction method for the steam drum guide valve of a thermal power plant boiler. It has the following beneficial effects:

[0025] I. The reinforcement device and construction method for the boiler drum guide valve of this thermal power plant: The support plate and support rod are set inside the filling block, providing structural support for the filling block from both horizontal and vertical directions, thereby maintaining the stability of the filling block structure and extending the service life of the components. The filling block adopts a funnel shell structure, which is wider at the top and narrower at the bottom. The internal steam and water pressure acts on the inclined surface of the funnel, generating an axial force, which effectively prevents high-pressure steam from blowing the components open, solves the problem of leakage during operation, improves the bending resistance of the plate surface, counteracts the outward thrust of the medium, reduces the outward bulging deformation of the plate surface, and reduces the probability of warping and cracking of the sealing surface. During installation, the support plate is aligned with the notch of the sealing plate, and the support plate enters the sliding groove. Then, the support plate is rotated to drive the filling block to rotate, causing the notch of the support plate and the sealing plate to be misaligned, thereby achieving the function of quickly fixing the components and facilitating the disassembly and installation of the components. Secondly, the filling block is hollow in the middle to reduce the weight of the components.

[0026] II. The reinforcement device and construction method of the boiler drum guide door of the thermal power plant: The sealing cover plate is centered on the hinge block. When closed, the sealing cover plate controls the second connecting end to engage with the second receiving end. Then, the pin passes through the second connecting end and the second receiving end to lock the component and prevent the cover plate from being blown open. At the same time, a cover is added on the basis of the filling block seal to further improve the sealing performance of the component.

[0027] III. The reinforcement device and construction method for the boiler drum guide door of the thermal power plant: A support frame is set inside the groove of the sealing cover plate. The support frame supports and reinforces the sealing cover plate, thereby significantly improving the overall rigidity of the cover plate, greatly improving its bending resistance, resisting the outward bulging deformation caused by the internal medium pressure, ensuring that the sealing surface is always flat and in contact, avoiding sealing failure and air leakage, further reducing cover plate deformation, and maintaining the sealing effect of the manhole door for a long time.

[0028] IV. The reinforcement device and construction method for the boiler drum guide door of the thermal power plant: After the guide door cover plate is attached to the top of the guide door housing, the first handle is rotated, which controls the first connecting shaft to rotate the rotating rod. The rotating rod is then inserted into the cut surface of the hand block. Through the interlocking of the components, on the basis of the guide door cover plate being sealed and fixed, the rotating rod supports the sealing cover plate, causing the sealing cover plate to adhere to the sealing plate. This further improves the fitting and sealing performance of the components, while reducing the vibration of the cover plate and maintaining the normal operation of the equipment.

[0029] V. The reinforcement device and construction method of the boiler drum guide door of the thermal power plant: The second handle controls the rotation of the second connecting shaft, which drives the baffle to rotate, so that the baffle intervenes outside the barrier ring. On the basis of the fixed rotating rod, the sealing between the components is further locked, which plays a role in double protection and locking. The rubber block is set on the baffle to increase the wear resistance of the components, reduce the wear caused by the contact of the components, and thus extend the service life of the components. Secondly, it plays a role in shock absorption and buffering, reducing the amplitude of the components and ensuring the stability of the components during operation. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the guide door housing structure of the present invention;

[0031] Figure 2 This is a schematic diagram of the fixing mechanism structure of the present invention;

[0032] Figure 3 This is a schematic diagram of the baffle structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the barrier ring structure of the present invention;

[0034] Figure 5 This is a schematic diagram of the annular block structure of the present invention;

[0035] Figure 6 This is a schematic diagram of the sealing plate structure of the present invention;

[0036] Figure 7 This is a schematic diagram of the handheld block structure of the present invention;

[0037] Figure 8 This is a schematic diagram of the filling block structure of the present invention;

[0038] Figure 9 This is a schematic diagram of the construction process for reinforcing the steam drum guide door of the present invention.

[0039] In the diagram: 1. Guide door housing; 2. Guide door cover plate; 3. First receiving end; 4. First connecting end; 5. Fixing mechanism; 6. Sealing device; 7. Second handle; 8. Second connecting shaft; 9. Barrier ring; 10. Baffle; 11. Rubber block; 12. Housing groove; 13. Annular block; 14. Cover plate slot; 15. Wear-resistant rubber block; 16. Spring strip; 17. First connecting shaft; 18. Rotating rod; 19. First handle; 51. Fixing end 52. Rotating block; 53. Screw; 54. Fixing block; 55. Receiving port; 601. Sealing plate; 602. Hinge block; 603. Sealing cover plate; 604. Second connecting end; 605. Second receiving end; 606. Pin; 607. Support frame; 608. Slide groove; 609. Filler block; 610. Support rod; 611. Support plate; 612. Cover plate groove; 613. Block face cut; 614. Handheld block. Detailed Implementation

[0040] 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.

[0041] First embodiment, such as Figures 1 to 3 As shown, the present invention provides a technical solution: a reinforcement device and construction method for a boiler drum guide door in a thermal power plant, comprising:

[0042] The guide door housing 1 has an annular housing structure and a fixed base set at the bottom of the annular housing. A sealing device 6 is fixedly connected to the lower side of the inner wall of the guide door housing 1. A first receiving end 3 is fixedly connected to the outer side of the guide door housing 1. A first connecting end 4 is rotatably connected to the inner side of the first receiving end 3.

[0043] The guide door cover plate 2 has a disc-shaped structure. The circumference of the guide door cover plate 2 is fixedly connected to the outer side of the first connecting end 4. A fixing mechanism 5 is provided between the guide door housing 1 and the guide door cover plate 2. The first receiving end 3 is fixed on the guide door housing 1, and the first connecting end 4 is fixed on the guide door cover plate 2. The first connecting end 4 rotates on the first receiving end 3 and adopts a hinge connection to maintain the connection relationship between the two components. When the guide door cover plate 2 closes on the guide door housing 1, the two are fixed by the fixing mechanism 5 to maintain the stability of the two components. During normal operation of the boiler, the manhole door is blocked, the opening is closed, and the internal high-temperature and high-pressure steam and water medium is firmly locked to prevent steam and boiler water from leaking outward and to maintain the rated working pressure of the steam drum. The sealing device 6 is set inside the guide door housing 1. The sealing device 6 further improves the sealing performance of the guide door on the basis of the sealing between the guide door housing 1 and the guide door cover plate 2.

[0044] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 3 to 5 As shown, a first connecting shaft 17 is rotatably connected to the top center of the guide door cover plate 2. A first handle 19 is fixedly connected to the top of the first connecting shaft 17, and a rotating rod 18 is fixedly connected to the bottom of the first connecting shaft 17. The rotating rod 18 is plugged into and adapted to the hand-held block 614. After the guide door cover plate 2 is attached to the top of the guide door housing 1, rotating the first handle 19 controls the first connecting shaft 17 to rotate the rotating rod 18, causing the rotating rod 18 to rotate and embed into the cutout 613 of the hand-held block 614. Through the interlocking of the components, based on the sealing and fixing of the guide door cover plate 2, the rotating rod 18 supports the sealing cover plate 603, causing the sealing cover plate 603 to adhere to the sealing plate 601, thereby further improving the sealing performance of the components and reducing the vibration of the cover plate, maintaining the normal operation of the equipment.

[0045] A second connecting shaft 8 is rotatably connected to the top edge of the guide door cover plate 2. A second handle 7 is fixedly connected to the top of the second connecting shaft 8, and a baffle 10 is fixedly connected to the bottom of the second connecting shaft 8. A barrier ring 9 is fixedly connected to the upper side of the inner wall of the guide door housing 1. A rubber block 11 is fixedly connected to the top of the baffle 10 near the barrier ring 9. The second handle 7 controls the rotation of the second connecting shaft 8, which drives the baffle 10 to rotate, causing the baffle 10 to engage outside the barrier ring 9. Based on the fixed rotating rod 18, this further locks the seal between the components, providing double protection and locking. The rubber block 11 is placed on the baffle 10 to increase the wear resistance of the components, reduce wear caused by component contact, and thus extend the service life of the components. Secondly, it plays a role in shock absorption and buffering, reducing the amplitude of component vibration and ensuring the stability of the components during operation.

[0046] The top of the guide door housing 1 has a housing groove 12. A spring strip 16 is fixedly connected to the bottom of the inner wall of the housing groove 12. An annular block 13 is fixedly connected to the outer side of the spring strip 16. A wear-resistant rubber block 15 is fixedly connected to the top of the annular block 13. The bottom of the guide door cover plate 2 has a cover plate slot 14 corresponding to the housing groove 12. The outer side of the annular block 13 is slidably connected to the inner wall of the housing groove 12. When the guide door cover plate 2 contacts the top of the guide door housing 1, the guide door cover plate 2 presses the annular block 13, causing the annular block 13 to slide inward into the housing groove 12 and compress the spring strip 16. This serves as a shock absorber and buffer, reducing the impact pressure during the cover plate closing process, reducing component wear, weakening the impact of vibration, preventing fasteners from loosening, maintaining a sealed and compressed state for a long time, and reducing steam leakage. The wear-resistant rubber block 15 acts as a gasket, filling the tiny gaps between components and preventing high-temperature and high-pressure steam and water from leaking outward.

[0047] The fixing mechanism 5 includes a fixing port 51, inside which a rotating block 52 is rotatably mounted. A screw 53 is fixedly connected to the outside of the rotating block 52. A fixing block 54 is threaded onto the upper side of the screw 53. Tightening the fixing block 54 presses it downward against the upper end face of the receiving port 55, thereby locking the fixing block 54 to the receiving port 55. The screw 53 rotates on the fixing port 51 via the rotating block 52. When installing the fixing cover, pulling the fixing block 54 moves the screw 53 toward the receiving port 55. Then, by rotating the fixing block 54 on the screw 53 toward the receiving port 55, the fixing block 54 continuously locks itself toward the receiving port 55, thus achieving the function of locking the cover.

[0048] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figures 6 to 9 As shown, the sealing device 6 includes:

[0049] The sealing plate 601 has a ring-shaped shell structure. The outer circumference of the sealing plate 601 is fixedly connected to the inner wall of the guide door shell 1. A sliding groove 608 is provided inside the sealing plate 601.

[0050] The filling block 609 has a funnel shell structure. A support rod 610 is fixedly connected to the center of the filling block 609. A support plate 611 is fixedly connected to the top of the support rod 610 and the upper side of the inner wall of the filling block 609. The support plate 611 passes through the filling block 609 and extends outward. The support plate 611 is fitted with the slide groove 608. Support plate 611 and support rod 610 are installed inside filler block 609, providing structural support for filler block 609 from the horizontal and vertical directions. This maintains the stability of filler block 609 structure and extends the service life of the component. Filler block 609 adopts a funnel shell structure, which is wider at the top and narrower at the bottom. The internal steam and water pressure acts on the inclined surface of the funnel, generating an axial force, which effectively prevents high-pressure steam from blowing the component open, solves the problem of leakage during operation, improves the bending resistance of the plate surface, counteracts the outward thrust of the medium, reduces the outward bulging deformation of the plate surface, and reduces the probability of warping and cracking of the sealing surface. During installation, the support plate 611 is aligned with the notch of sealing plate 601, and the support plate 611 enters the slide groove 608. Then, the support plate 611 is rotated to drive the filler block 609 to rotate, causing the support plate 611 and the notch of sealing plate 601 to be misaligned, thereby achieving the function of quickly fixing the component and facilitating component disassembly and installation. In addition, the filler block 609 is hollow in the middle, reducing the weight of the component.

[0051] The sealing device 6 also includes:

[0052] Hinge block 602 is disposed on the top of sealing plate 601, and the bottom of hinge block 602 is fixedly connected to the top of sealing plate 601.

[0053] A sealing cover 603 has a cylindrical block structure. The outer side of the sealing cover 603 is fixedly connected to the hinge block 602. A second connecting end 604 is fixedly connected to the outer side of the sealing cover 603 away from the hinge block 602. A second receiving end 605 is fitted onto the outer side of the second connecting end 604. A pin 606 is inserted and detachably fitted onto the outer side of the second receiving end 604 and the second receiving end 605. With the hinge block 602 as the axis center, when the sealing cover 603 is closed, it controls the second connecting end 604 to engage with the second receiving end 605. Then, the pin 606 passes through the second connecting end 604 and the second receiving end 605, thereby locking the component and preventing the cover from being forced open. At the same time, it adds a cover on the basis of the sealing of the filler block 609, further improving the sealing performance of the component.

[0054] A cover groove 612 is formed on the outer side of the sealing cover 603 near the filler block 609, and a support frame 607 is fixedly connected to the inner wall of the cover groove 612. The support frame 607 is set inside the cover groove 612 of the sealing cover 603. The support frame 607 supports and reinforces the sealing cover 603, thereby significantly improving the overall rigidity of the cover, greatly improving its bending resistance, resisting the outward expansion deformation caused by the internal medium pressure, ensuring that the sealing surface is always flat and in contact, avoiding air leakage due to seal failure, further reducing cover deformation, and maintaining the sealing effect of the manhole door for a long time.

[0055] A hand-held block 614 is fixedly connected to the center of the top of the sealing cover 603. There are two hand-held blocks 614, which are mirror-symmetrically arranged on the top of the sealing cover 603. Both hand-held blocks 614 have a cutout 613 on their outer surface. The mirror-symmetrical design of the hand-held blocks 614 on the top of the sealing cover 603 provides a hand-held space for the sealing cover 603.

[0056] A method for reinforcing the steam drum guide valve of a thermal power plant boiler includes the following steps:

[0057] The first step is to install the support plate 611 and the notch of the sealing plate 601 by using the filler block 609. Then, the support plate 611 is inserted into the slide groove 608. Finally, the support plate 611 is rotated to misalign with the notch of the sealing plate 601, thereby fixing the component and quickly sealing the guide door.

[0058] The second step is to seal the cover. The sealing cover plate 603 drives the second connecting end 604 to engage with the second receiving end 605. Then, the pin 606 passes through the second connecting end 604 and the second receiving end 605 to achieve the function of quick sealing and maintain the normal operation of the boiler.

[0059] The third step is reinforcement. The guide door cover plate 2 is used to close the guide door housing 1. During the closing process, the rotating rod 18 is driven into the interior of the guide door housing 1. The rotating rod 18 and the hand handle block 614 are arranged in a staggered manner. Then, the rotating rod 18 is controlled to rotate by the first handle 19, so that the rotating rod 18 and the hand handle block 614 are engaged. After the guide door cover plate 2 is closed, the rotating rod 18 supports the sealing cover plate 603, thereby reinforcing the sealing effect of the component during the sealing process.

[0060] When in use, a sealing plate 601 is provided inside the guide door housing 1. The top of the sealing plate 601 has a notch. During installation, the filling block 609 needs to be inserted into the sealing plate 601 to fill the middle space of the sealing plate 601, thereby sealing the guide door hole.

[0061] A support plate 611 is provided inside the filler block 609. The two ends of the support plate 611 pass through the filler block 609 and extend outward. During installation, the support plate 611 is aligned with the notch of the sealing plate 601. The support plate 611 is pressed into the slide groove 608. Then, when the support plate 611 is rotated, the filler block 609 is rotated, so that the support plate 611 and the notch of the sealing plate 601 are misaligned. This enables the component to be quickly fixed, which facilitates subsequent installation or disassembly and completes the first step of sealing.

[0062] In the second part, the sealing cover plate 603 is aligned and fitted with the second receiving end 605 through the second connecting end 604. Then, by inserting the pin 606 into the second connecting end 604 and the second receiving end 605, the component is fixed. The sealing cover plate 603 covers the top of the filling block 609, thereby protecting and sealing the filling block 609.

[0063] The third part is that the guide door cover plate 2 closes to the top of the guide door housing 1. The guide door cover plate 2 and the guide door housing 1 are locked by the fixing mechanism 5. A first connecting shaft 17 and a second connecting shaft 8 are provided on the top of the guide door cover plate 2.

[0064] By rotating the first connecting shaft 17, the control rod 18 is embedded into the hand-held block 614, thereby enabling the components to adapt to each other. The control rod 18 is also used to support the sealing cover plate 603, thereby achieving the function of coordinating and reinforcing the components.

[0065] The second connecting shaft 8 drives the baffle 10 to contact the barrier ring 9, thereby enhancing the locking effect of the fixing mechanism 5;

[0066] When personnel need to enter the access door, disassembly should be carried out in this order.

[0067] Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

Claims

1. A reinforcement device for the steam drum guide door of a thermal power plant boiler, characterized in that, include: The guide door housing (1) has an annular housing structure and a fixed base set at the bottom of the annular housing. A sealing device (6) is fixedly connected to the lower side of the inner wall of the guide door housing (1). A first receiving end (3) is fixedly connected to the outer side of the guide door housing (1). A first connecting end (4) is rotatably connected to the inner side of the first receiving end (3). The guide door cover (2) has a disc-shaped structure. The guide door cover (2) is fixedly connected to the outside of the first connecting end (4) at its circumference. A fixing mechanism (5) is provided between the guide door housing (1) and the guide door cover (2). The sealing device (6) includes: A sealing plate (601) has a ring-shaped shell structure. The outer circumference of the sealing plate (601) is fixedly connected to the inner wall of the guide door shell (1). A sliding groove (608) is provided inside the sealing plate (601). A filling block (609) has a funnel shell structure. A support rod (610) is fixedly connected to the center of the filling block (609). A support plate (611) is fixedly connected to the top of the support rod (610) and the upper side of the inner wall of the filling block (609). The support plate (611) penetrates the filling block (609) and extends outward. The support plate (611) is fitted with a groove (608).

2. The reinforcement device for the steam drum guide door of a thermal power plant boiler according to claim 1, characterized in that: The sealing device (6) further includes: A hinge block (602) is disposed on the top of the sealing plate (601), and the bottom of the hinge block (602) is fixedly connected to the top of the sealing plate (601); A sealing cover (603) has a cylindrical block structure. The outer side of the sealing cover (603) is fixedly connected to the hinge block (602). A second connecting end (604) is fixedly connected to the outer side of the sealing cover (603) away from the hinge block (602). A second receiving end (605) is fitted to the outer side of the second connecting end (604). The second receiving end (605) and the outer side of the second connecting end (604) are fitted with a pin (606).

3. The reinforcement device for the steam drum guide door of a thermal power plant boiler according to claim 2, characterized in that: The sealing cover plate (603) has a cover plate groove (612) on the side near the filling block (609) on the outside, and a support frame (607) is fixedly connected to the inner wall of the cover plate groove (612).

4. The reinforcement device for the steam drum guide door of a thermal power plant boiler according to claim 3, characterized in that: A hand-held block (614) is fixedly connected to the center of the top of the sealing cover (603). There are two hand-held blocks (614), and the two hand-held blocks (614) are mirror-symmetrically arranged on the top of the sealing cover (603). Both hand-held blocks (614) have a block surface cutout (613) on their exterior.

5. A reinforcement device for the steam drum guide door of a thermal power plant boiler according to claim 1, characterized in that: The top center of the guide door cover (2) is rotatably connected to a first connecting shaft (17), the top of the first connecting shaft (17) is fixedly connected to a first handle (19), and the bottom of the first connecting shaft (17) is fixedly connected to a rotating rod (18), which is plugged into and adapted to the hand block (614).

6. The reinforcement device for the steam drum guide door of a thermal power plant boiler according to claim 1, characterized in that: The top edge of the guide door cover (2) is rotatably connected to a second connecting shaft (8), the top of the second connecting shaft (8) is fixedly connected to a second handle (7), the bottom of the second connecting shaft (8) is fixedly connected to a baffle (10), the upper side of the inner wall of the guide door housing (1) is fixedly connected to a barrier ring (9), and the top of the baffle (10) is fixedly connected to a rubber block (11) on the side near the barrier ring (9).

7. A reinforcement device for the steam drum guide door of a thermal power plant boiler according to claim 6, characterized in that: The top of the guide door housing (1) is provided with a housing groove (12), and a spring strip (16) is fixedly connected to the bottom of the inner wall of the housing groove (12). An annular block (13) is fixedly connected to the outer side of the spring strip (16), and a wear-resistant rubber block (15) is fixedly connected to the top of the annular block (13). The bottom of the guide door cover plate (2) is provided with a cover plate slot (14) corresponding to the position of the housing groove (12). The outer side of the annular block (13) is slidably connected to the inner wall of the housing groove (12).

8. A reinforcement device for the steam drum guide door of a thermal power plant boiler according to claim 1, characterized in that: The fixing mechanism (5) includes a fixing port (51), a rotating block (52) is rotatably mounted inside the fixing port (51), a screw (53) is fixedly connected to the outside of the rotating block (52), and a fixing block (54) is threaded on the upper side of the screw (53). Tightening the fixing block (54) can press it down against the upper end face of the receiving port (55), thereby locking the fixing block (54) and the receiving port (55) together.

9. A method for reinforcing the guide gate of a boiler drum in a thermal power plant, comprising the boiler drum guide gate reinforcement device according to claim 1, characterized in that, Includes the following steps: The first step is to install the support plate (611) and the notch of the sealing plate (601) by using the filler block (609). Then, the support plate (611) is inserted into the slide groove (608). Then, the support plate (611) and the notch of the sealing plate (601) are misaligned by rotating the support plate (611) to achieve the function of fixing the component and quickly sealing the guide door. The second step is to seal the cover. The sealing cover plate (603) drives the second connecting end (604) to fit into the second receiving end (605). Then, the pin (606) passes through the second connecting end (604) and the second receiving end (605) to achieve the function of quick sealing and maintain the normal operation of the boiler. The third step is reinforcement. The guide door cover plate (2) is used to close the guide door housing (1). During the closing process, the rotating rod (18) is driven into the interior of the guide door housing (1). The rotating rod (18) and the hand block (614) are arranged in a staggered manner. Then, the rotating rod (18) is controlled to rotate by the first handle (19) so that the rotating rod (18) and the hand block (614) are engaged. After the guide door cover plate (2) is closed, the rotating rod (18) supports the sealing cover plate (603), thereby achieving the sealing effect of reinforcing the component during the sealing process.

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