Single-plate type rigid self-sealing high-temperature heat source dissipation and propagation isolation device
By designing a single-board rigid self-sealing high-temperature heat source dissipation and propagation isolation device, the composite lifting device, a labyrinth mechanical sealing structure and an elastic composite insulation structure, the problem of flue gas overflow during the isolation door operation is solved, and an effective flue gas sealing and a safe operating environment are achieved.
Patent Information
- Application Number
- CN202411951891.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-04-18
AI Technical Summary
The existing flue gas isolation device will overflow when the isolation door is lifted, resulting in seal failure and polluting the environment and workplace; when the isolation door falls, small gaps cause a small amount of flue gas to overflow, which is inconvenient for maintenance.
A single-board rigid self-sealing high-temperature heat source dissipation and propagation isolation device is designed, using a composite lifting device, isolation door, shell, flip door assembly and suspension support, combining a maze mechanical sealing structure and an elastic composite insulation structure to achieve effective isolation and sealing of flue gas.
The smoke sealing is achieved when the isolation door is lifted and dropped, avoiding smoke overflow, providing a safer operating environment, and facilitating maintenance.
Smart Images
Figure CN119844784A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of smoke isolation, and in particular to a single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device. Background Art
[0002] In the existing boiler system, whether it is a coal-fired boiler, a gas-fired boiler or an oil-fired boiler, there is a problem of low thermal efficiency, so a waste heat recovery system needs to be set up to improve thermal efficiency. In the boiler waste heat recovery system, the main function of the three-way damper door is to adjust the flow direction of the exhaust gas from the gas turbine. By controlling the switch state of the damper door, the flue gas can be directly discharged through the bypass chimney or flow to the waste heat boiler to achieve secondary recovery of heat energy. When the three-way damper used with different types of gas turbines is in the closed state, there may be a problem of high-temperature flue gas dissipation, and the structure inside the flue is sealed, making it difficult to monitor the flue gas outflow status in real time. In order to prevent flue gas leakage and provide maintenance personnel with a safer operating environment, a flue gas isolation device needs to be set behind the three-way damper door.
[0003] Existing smoke isolation devices often use hoisting door type isolation. However, when the isolation door of the existing isolation device is hoisted, smoke will overflow from the extraction opening of the isolation door, causing the smoke seal to fail and pollute the environment and the work workshop; and when the isolation door falls, there will be a small gap between the isolation door and the smoke isolation device. Although most of the smoke can be isolated, a small amount of smoke will overflow from the gap, which is inconvenient for maintenance personnel to carry out maintenance. Summary of the invention
[0004] In order to solve the problems in the existing isolation device, when the isolation door is lifted, smoke will overflow from the extraction opening of the isolation door, causing the smoke seal to fail and pollute the environment and the workshop; and when the isolation door is dropped, there will be a small gap between the isolation door and the smoke isolation device, and a small amount of smoke will overflow from the gap, making it inconvenient for maintenance personnel to carry out maintenance. Therefore, a single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device is provided to solve the problems raised in the above-mentioned background technology.
[0005] The technical solution of the present invention is:
[0006] A single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device, comprising a composite lifting device, an isolation door, a shell, a flap door assembly and a suspension support;
[0007] A composite lifting device is installed above the shell, and the composite lifting device is connected to a suspension support through a lifting cable, and an isolation door is fixed to the lower end of the suspension support, and the side wall and the bottom wall in the shell are both provided with a labyrinth mechanical sealing structure, and an opening is provided at the upper end of the shell, and the isolation door can be inserted into the labyrinth mechanical sealing structure in the shell through the opening, and a flap door assembly is provided at the opening at the upper end of the shell, and the flap door assembly is used to close the opening at the upper end of the shell;
[0008] Furthermore, the flap door assembly includes: an I-beam, a drive assembly, a hinged rod and a flap door; the I-beam is fixedly connected to the upper end of the shell, the drive assembly is fixed to the upper end of the I-beam, the hinged rod is fixed on the output shaft of the drive assembly, the other end of the hinged rod is hinged to the flap door, and the flap door is used to close the opening at the upper end of the shell.
[0009] Furthermore, the driving component adopts a steering gear.
[0010] Furthermore, a sealing gasket for sealing with the shell is provided at the lower end of the flap door.
[0011] Furthermore, a long sealing plate and a short sealing plate parallel to each other are vertically arranged at the upper end of the labyrinth mechanical sealing structure, and the isolation door can be inserted into the gap between the long sealing plate and the short sealing plate.
[0012] Furthermore, the long sealing plate in the labyrinth mechanical sealing structure is arranged on the high temperature side of the housing.
[0013] Furthermore, a funnel-shaped guide groove is provided in the opening provided at the upper end of the shell, and the funnel-shaped guide groove is used to guide the isolation door into the labyrinth mechanical sealing structure.
[0014] Furthermore, an elastic composite thermal insulation structure is provided at the connection between the suspension support and the isolation door, and the elastic composite thermal insulation structure can be embedded in the funnel-shaped guide groove to achieve sealing of the opening at the upper end of the shell.
[0015] Furthermore, the elastic composite thermal insulation structure is composed of thermal insulation cotton wrapped in a fiber cotton skin.
[0016] Compared with the prior art, the present invention has the following beneficial effects:
[0017] 1. A single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device, which is provided with a composite lifting device, an isolation door, a shell and a flap door assembly. The composite lifting device lifts the isolation door from the shell through a lifting cable to achieve smoke conduction of the isolation device; the composite lifting device inserts the isolation door into the shell through a lifting cable to achieve smoke isolation of the isolation device. When the isolation door is lifted from the shell, the flap door assembly flips downward to close the upper opening of the shell to prevent smoke from overflowing from the upper opening of the shell; before the isolation door is inserted into the shell, the flap door assembly flips upward 160° to fully open the upper opening of the shell, so that the isolation door can be inserted into the shell through the opening to complete the smoke isolation of the isolation device.
[0018] 2. The side wall and bottom wall of the shell are both provided with a labyrinth mechanical seal structure. After the isolation door is inserted into the labyrinth mechanical seal structure, the seal between the inner wall of the shell and the isolation door is realized. The upper end of the labyrinth mechanical seal structure is vertically provided with a long sealing plate and a short sealing plate parallel to each other. After the isolation door is inserted, the gaps on both sides of the labyrinth mechanical seal structure in contact with the isolation door are not at the same height, which improves the effect of blocking smoke.
[0019] 3. When the isolation door is inserted into the shell, there is a gap between the isolation door and the opening at the upper end of the shell, which will cause smoke to escape. An elastic composite insulation structure is provided at the connection between the suspension support and the isolation door. When the isolation door is inserted into the shell, the elastic composite insulation structure blocks the gap between the isolation door and the opening at the upper end of the shell to achieve a sealing effect. The elastic composite insulation structure is detachably fixed to the upper end of the isolation door with bolts and door nails, so that it can be replaced immediately after wear. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the structure of the isolation device;
[0021] Figure 2 It is a front view of the composite lifting device and the isolation door;
[0022] Figure 3 It is a front view of the shell in the isolation device;
[0023] Figure 4 It is a side view of the composite lifting device and the isolation door;
[0024] Figure 5 is a side view of the shell in the isolation device;
[0025] Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure of A;
[0026] Figure 7 It is a structural schematic diagram of the cross section of the funnel-shaped guide groove;
[0027] Figure 8 It is a schematic diagram of the structure cross section of a labyrinth mechanical seal structure;
[0028] Fig. 9 It is a structural schematic diagram of the elastic composite thermal insulation structure.
[0029] In the figure: 1. composite lifting device; 2. isolation door; 3. shell; 4. flap door assembly; 5. suspension support; 7. labyrinth mechanical sealing structure; 401. I-beam; 402. drive assembly; 403. hinged rod; 404. flap door; 701. long sealing plate; 702. short sealing plate; 6. funnel-shaped guide groove; 8. elastic composite thermal insulation structure. DETAILED DESCRIPTION
[0030] Specific implementation method 1: See Figure 1-5 As shown, a single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device, this embodiment includes a composite lifting device 1, an isolation door 2, a shell 3, a flap door assembly 4 and a suspension support 5;
[0031] A composite lifting device 1 is installed above the shell 3, and the composite lifting device 1 is connected to a suspension support 5 through a lifting cable. An isolation door 2 is fixed to the lower end of the suspension support 5. The side walls and bottom walls in the shell 3 are provided with a labyrinth mechanical sealing structure 7. An opening is provided at the upper end of the shell 3, and the isolation door 2 can pass through the opening and be inserted into the labyrinth mechanical sealing structure 7 in the shell 3. A flap door assembly 4 is provided at the opening at the upper end of the shell 3, and the flap door assembly 4 is used to close the opening at the upper end of the shell 3.
[0032] Furthermore, the shell 3 is connected to the flue by bolts, and the hoisting direction of the isolation door 2 is perpendicular to the direction of the flue gas flow. The three labyrinth mechanical sealing structures 7 located on the left and right side walls and the bottom wall of the shell 3 form a U-shaped structure with an opening facing upward. The three labyrinth mechanical sealing structures 7 are all in the same plane as the isolation door 2. After the isolation door 2 is inserted, the left and right sides of the isolation door 2 are plugged into the labyrinth mechanical sealing structures 7 on the left and right sides, and the bottom side of the isolation door 2 is plugged into the labyrinth mechanical sealing structure 7 at the bottom to achieve the closure of the isolation device. The suspension support 5 and the composite lifting device 1 are both provided with pulley blocks, and the composite lifting device 1 is provided with a winch. When the winch is wound up, the suspension cable pulls the suspension support 5 to move upward in parallel with the composite lifting device 1 to achieve the lifting of the isolation door 2; when the winch is unwinding, the suspension support 5 moves downward in parallel with the composite lifting device 1 to achieve the insertion of the isolation door 2. The flap door assembly 4 can be flipped upward to open the opening at the upper end of the shell 3 to provide space for the insertion of the isolation door 2; the flap door assembly 4 can be flipped downward to close the opening at the upper end of the shell 3 to prevent smoke from escaping from the opening.
[0033] Specific implementation method 2: See Figure 6 As shown, the flap door assembly 4 of this embodiment includes: an I-beam 401, a drive assembly 402, a hinged rod 403 and a flap door 404; the I-beam 401 is fixedly connected to the upper end of the shell 3, the drive assembly 402 is fixed to the upper end of the I-beam 401, the hinged rod 403 is fixed on the output shaft of the drive assembly 402, the other end of the hinged rod 403 is hinged to the flap door 404, and the flap door 404 is used to close the opening at the upper end of the shell 3.
[0034] Specific implementation method three: see Figure 6 As shown, the driving component 402 of this embodiment adopts a steering gear.
[0035] Furthermore, the I-beam 401 plays a supporting role and provides installation space for the drive assembly 402, which is used to drive the rotation of the hinge rod 403. When the isolation door 2 is inserted, the drive assembly 402 rotates 160° counterclockwise, and the drive assembly 402 drives the flap door 404 to lift upward through the hinge rod 403, so that the opening at the upper end of the shell 3 is opened, and the flap door 404 is away from the opening at the upper end of the shell 3, providing space for the isolation door 2 to be inserted into the shell 3. After the isolation door 2 is lifted, the drive assembly 402 rotates 160° clockwise, and the drive assembly 402 drives the flap door 404 to fall downward through the hinge rod 403, and the flap door 404 covers the opening at the upper end of the shell 3, so that the isolation device remains airtight.
[0036] Specific implementation method four: see Figure 6 As shown, the lower end of the flap door 404 of this embodiment is provided with a sealing gasket for sealing with the shell 3.
[0037] Furthermore, a sealing gasket is provided to improve the sealing effect between the flap door 404 and the housing 3 after the flap door 404 is closed.
[0038] Specific implementation method five: see Figure 8 As shown, the upper end of the labyrinth mechanical seal structure 7 of this embodiment is vertically provided with a long sealing plate 701 and a short sealing plate 702 parallel to each other, and the isolation door 2 can be inserted into the gap between the long sealing plate 701 and the short sealing plate 702.
[0039] Specific implementation method six: see Figure 8 As shown, the long sealing plate 701 in the labyrinth mechanical seal structure 7 of this embodiment is arranged on the high temperature side of the housing 3 .
[0040] Furthermore, after the isolation door 2 is inserted into the labyrinth mechanical seal structure 7, the high temperature side of the isolation door 2 contacts the long sealing plate 701, and the low temperature side of the isolation door 2 contacts the short sealing plate 702. The gaps on both sides where the labyrinth mechanical seal structure 7 contacts the isolation door 2 are not at the same height, which improves the effect of blocking smoke.
[0041] Specific implementation method seven: See Figure 7 As shown, in this embodiment, a funnel-shaped guide groove 6 is provided in the opening provided at the upper end of the shell 3 , and the funnel-shaped guide groove 6 is used to guide the isolation door 2 into the labyrinth mechanical sealing structure 7 .
[0042] Furthermore, the funnel-shaped guide groove 6 plays a guiding role, and a conical guide portion is provided at the lower portion of the funnel-shaped guide groove 6. When the isolation door 2 slides into the conical guide portion at the lower portion of the funnel-shaped guide groove 6, the isolation door 2 can be accurately inserted into the labyrinth mechanical sealing structure 7 even if it shakes slightly during the descent process.
[0043] Specific implementation method eight: See Figure 4 and 9 As shown, an elastic composite insulation structure 8 is provided at the connection between the suspension support 5 and the isolation door 2 of this embodiment, and the elastic composite insulation structure 8 can be embedded in the funnel-shaped guide groove 6 to achieve sealing of the opening at the upper end of the shell 3.
[0044] Furthermore, when the isolation door 2 is inserted into the shell 3, there is a gap between the isolation door 2 and the opening at the upper end of the shell 3, which will cause smoke to escape, so an elastic composite thermal insulation structure 8 is provided to play a role in thermal insulation and smoke isolation. A rectangular sealed cavity is provided at the upper part of the funnel-shaped guide groove 6. When the isolation door 2 is inserted into the shell 3, the elastic composite thermal insulation structure 8 is embedded in the rectangular sealed cavity at the upper part of the funnel-shaped guide groove 6, so as to achieve sealing between the funnel-shaped guide groove 6 and the isolation door 2.
[0045] Specific implementation method nine: See Figure 4 and 9 As shown, the elastic composite thermal insulation structure 8 of this embodiment is composed of thermal insulation cotton wrapped in a fiber cotton skin.
[0046] Furthermore, the elastic composite insulation structure 8 is composed of fiber cotton skin wrapped with insulation cotton, which is soft and deformable, and can fit tightly with the rectangular sealing cavity of the funnel-shaped guide groove 6. The elastic composite insulation structure 8 is detachably fixed to the upper end of the isolation door 2 by bolts and door nails, so that it can be replaced immediately after wear.
[0047] During use, when the isolation device is closed, the flap door assembly 4 flips upward 160° to fully open the upper opening of the shell 3, and the composite lifting device 1 inserts the isolation door 2 into the shell 3 through the lifting cable, and the elastic composite insulation structure 8 is embedded in the rectangular sealed cavity at the upper part of the funnel-shaped guide groove 6 to achieve smoke isolation of the isolation device; when the isolation device is opened, the composite lifting device 1 lifts the isolation door 2 out of the shell 3 through the lifting cable, and the flap door assembly 4 flips downward to close the upper opening of the shell 3 to achieve smoke conduction of the isolation device.
Claims
1. A single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device, characterized in that: It comprises a composite lifting device (1), an isolation door (2), a shell (3), a flap door assembly (4) and a suspension support (5); A composite lifting device (1) is installed above the shell (3), and the composite lifting device (1) is connected to a suspension support (5) via a lifting cable. An isolation door (2) is fixed to the lower end of the suspension support (5). The side walls and the bottom wall inside the shell (3) are both provided with a labyrinth-type mechanical sealing structure (7). An opening is provided at the upper end of the shell (3), and the isolation door (2) can pass through the opening and be inserted into the labyrinth-type mechanical sealing structure (7) inside the shell (3). A flap door assembly (4) is provided at the opening at the upper end of the shell (3), and the flap door assembly (4) is used to close the opening at the upper end of the shell (3).
2. The single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device according to claim 1 is characterized in that: The flap door assembly (4) comprises: an I-beam (401), a drive assembly (402), a hinged rod (403) and a flap door (404); the I-beam (401) is fixedly connected to the upper end of the housing (3); the drive assembly (402) is fixed to the upper end of the I-beam (401); the hinged rod (403) is fixed to the output shaft of the drive assembly (402); the other end of the hinged rod (403) is hingedly connected to the flap door (404); the flap door (404) is used to close the opening at the upper end of the housing (3).
3. The single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device according to claim 2 is characterized in that: The driving component (402) is a steering gear.
4. The single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device according to claim 2 is characterized in that: A sealing gasket is provided at the lower end of the flap door (404) for sealing with the housing (3).
5. The single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device according to claim 1 is characterized in that: A long sealing plate (701) and a short sealing plate (702) parallel to each other are vertically arranged at the upper end of the labyrinth mechanical sealing structure (7), and the isolation door (2) can be inserted into the gap between the long sealing plate (701) and the short sealing plate (702).
6. The single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device according to claim 5 is characterized in that: The long sealing plate (701) in the labyrinth mechanical sealing structure (7) is arranged on the high-temperature side of the housing (3).
7. The single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device according to claim 6 is characterized in that: A funnel-shaped guide groove (6) is provided in the opening provided at the upper end of the shell (3), and the funnel-shaped guide groove (6) is used to guide the isolation door (2) into the labyrinth-type mechanical sealing structure (7).
8. The single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device according to claim 7 is characterized in that: An elastic composite heat-insulating structure (8) is provided at the connection between the suspension support (5) and the isolation door (2), and the elastic composite heat-insulating structure (8) can be embedded in the funnel-shaped guide groove (6) to achieve sealing of the opening at the upper end of the shell (3).
9. The single-plate rigid self-sealing high-temperature heat source dissipation and propagation isolation device according to claim 8 is characterized in that: The elastic composite thermal insulation structure (8) is composed of thermal insulation cotton wrapped in a fiber cotton skin.