Air pre-heater coupling sealing device

Abstract

The utility model discloses an air pre-heater coupling sealing device which comprises a first air pre-heater base plate, a sealing gasket is arranged at the top end of the first air pre-heater base plate, a second air pre-heater base plate is arranged at the top end of the sealing gasket, two clamping mechanisms are arranged on the two sides of the top end of the second air pre-heater base plate, and a tightening sealing assembly is arranged between the two clamping mechanisms. The multiple clamping mechanisms and the multiple tightening sealing assemblies are distributed at the top end of the second air pre-heater base plate in a linear staggered mode. According to the air pre-heater coupling sealing device, the clamping mechanism is arranged, the first air pre-heater base plate and the second air pre-heater base plate are separated by pressing and rotating the first rotary knob, mounting and dismounting of the first air pre-heater base plate and the second air pre-heater base plate are facilitated, the efficiency of workers is improved, the clamping sealing assembly is arranged, and the sealing effect is good. And the second knob is rotated, so that the sealing gasket is more tightly attached to the first air pre-heater base plate and the second air pre-heater base plate, and the sealing performance is further improved.

Description

Technical Field

[0001] This utility model relates to the field of air preheater sealing, and more particularly to an air preheater coupling sealing device. Background Technology

[0002] An air preheater is an important preheating device that improves the heat exchange performance of a boiler and reduces heat loss. Its main function is to transfer the heat carried by the flue gas discharged from the boiler tail flue to the air entering the boiler through heat transfer elements such as heat dissipation pipes, and preheat the air to a certain temperature.

[0003] Sealing is crucial during the operation of the air preheater. Since the air preheater is connected to both flue gas and air on opposite sides with a significant pressure difference, effective sealing measures must be taken to prevent flue gas leakage to the air side—this is known as air preheater leakage. Air leakage not only reduces boiler thermal efficiency and increases the power consumption of the induced draft fan and booster fan, but also affects the stable operation of the boiler and the unit's economic efficiency. Therefore, improving the sealing between the air preheater plates is key. Existing sealing devices, which require rotating multiple screws for installation and removal, are inconvenient and their sealing effect does not meet the requirements. Utility Model Content

[0004] To address the aforementioned problems, the purpose of this invention is to provide an air preheater coupling sealing device.

[0005] The following technical solution is adopted: an air preheater coupling sealing device includes a first air preheater base plate, a sealing gasket is provided at the top of the first air preheater base plate, a second air preheater base plate is provided at the top of the sealing gasket, two clamping mechanisms are provided on both sides of the top of the second air preheater base plate, and a tightening sealing component is provided between the two clamping mechanisms.

[0006] Optionally, the clamping mechanism includes a first groove, which is formed at the top of the first air preheater substrate. A lower sleeve is fixedly connected to the inner wall of the first groove, and a slot is formed at the top of the lower sleeve.

[0007] Optionally, the second air preheater substrate has a through hole, and a locking rod is provided inside the second air preheater substrate. An upper sleeve is movably engaged with the outer wall of the locking rod, and the upper sleeve is fixedly sleeved on the inner wall of the through hole. A first knob is fixedly connected to the top of the locking rod, a first spring is fixedly connected to the inner wall of the upper sleeve, and a locking bolt is fixedly connected to the lower end of the locking rod.

[0008] Optionally, the size of the latch matches the size of the slot.

[0009] Optionally, the tightening and sealing assembly includes an upper extrusion block, a telescopic rod fixedly connected to the top of the upper extrusion block, an inner cavity opened inside the second air preheater substrate, the inner wall of the inner cavity being slidably connected to the upper extrusion block, a lower extrusion block fixedly connected to the top of the telescopic rod, the lower extrusion block being slidably connected to the inner wall of the inner cavity, a threaded rod rotatably connected to the top of the lower extrusion block, the threaded rod passing through the top of the second air preheater substrate and being threadedly connected to the passing portion, and a second knob fixedly connected to the top of the threaded rod.

[0010] Optionally, a second spring is fixedly connected between the lower extrusion block and the upper extrusion block, and the second spring is sleeved on the outer wall of the telescopic rod.

[0011] Optionally, the clamping mechanism and the tightening sealing assembly are each a number, and are linearly and alternately distributed on the top of the second air preheater substrate.

[0012] Optionally, the first air preheater substrate and the second air preheater substrate have the same size and shape.

[0013] The technical effects that can be achieved by the technical means of this utility model are as follows:

[0014] (1) In this utility model, by setting a clamping mechanism, the first air preheater substrate and the second air preheater substrate are separated by pressing and rotating the first knob, which facilitates the installation and disassembly of the first air preheater substrate and the second air preheater substrate and improves the efficiency of the staff.

[0015] (2) In this utility model, by setting a tightening sealing component and rotating the second knob, the sealing gasket is more tightly attached to the first air preheater substrate and the second air preheater substrate, thereby further improving the sealing performance. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a half-sectional three-dimensional structural diagram of the present invention.

[0018] Figure 3 This is a partial cross-sectional three-dimensional structural diagram of the clamping mechanism of this utility model.

[0019] Figure 4 This is a partial cross-sectional three-dimensional structural diagram of the tightening and sealing assembly of this utility model.

[0020] In the figure: 1. First air preheater base plate; 2. Second air preheater base plate; 3. Clamping mechanism; 301. First groove; 302. Slot; 303. Clamping rod; 304. First knob; 305. Upper sleeve; 306. First spring; 307. Through hole; 308. Clamping bolt; 309. Lower sleeve; 4. Tightening and sealing assembly; 401. Upper pressing block; 402. Telescopic rod; 403. Second knob; 404. Threaded rod; 405. Lower pressing block; 406. Second spring; 407. Inner cavity; 5. Sealing gasket. Detailed Implementation

[0021] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described with reference to the accompanying drawings.

[0022] In the description of this utility model, it should be noted that the orientations or positional relationships indicated by terms such as "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] A preferred embodiment of the air preheater coupling sealing device provided by this utility model is, for example... Figures 1 to 4 As shown: An air preheater coupling sealing device includes a first air preheater base plate 1, a sealing gasket 5 at the top of the first air preheater base plate 1, a second air preheater base plate 2 at the top of the sealing gasket 5, two clamping mechanisms 3 on both sides of the top of the second air preheater base plate 2, and a tightening sealing assembly 4 between the two clamping mechanisms 3. The number of clamping mechanisms 3 and tightening sealing assemblies 4 are several, and they are linearly and alternately distributed at the top of the second air preheater base plate 2. The first air preheater base plate 1 and the second air preheater base plate 2 are the same in size and shape. By setting the sealing gasket 5 as the main sealing structure, it works together with the clamping mechanisms 3 and the tightening sealing assembly 4 to complete the sealing work.

[0025] In this embodiment, the clamping mechanism 3 includes a first groove 301, which is formed at the top of the first air preheater substrate 1. A lower sleeve 309 is fixedly connected to the inner wall of the first groove 301. A slot 302 is formed at the top of the lower sleeve 309. A through hole 307 is formed inside the second air preheater substrate 2. A clamping rod 303 is provided inside the second air preheater substrate 2. An upper sleeve 305 is movably clamped to the outer wall of the clamping rod 303. The upper sleeve 305 is fixedly sleeved on the inner wall of the through hole 307. A first knob 304 is fixedly connected to the top of the clamping rod 303. A first spring 306 is fixedly connected to the inner wall of the upper sleeve 305 and the clamping rod 303. A bolt 308 is fixedly connected to the lower end of the clamping rod 303. The bolt 308 matches the size of the slot 302. This ensures that the bolt 308 can pass through the slot 302 and then engage with the lower sleeve 309 during the downward pushing process.

[0026] By pressing the first knob 304, the locking lever 303 descends and the first spring 306 is compressed. The locking bolt 308 passes through the locking groove 302 during the downward push. Rotating the first knob 304 releases it. Under the action of the first spring 306, the locking bolt 308 is tightly locked into the lower sleeve 309, thus completing the installation of the locking mechanism 3.

[0027] In this embodiment, the tightening and sealing assembly 4 includes an upper extrusion block 401, a telescopic rod 402 fixedly connected to the top of the upper extrusion block 401, an inner cavity 407 opened inside the second air preheater substrate 2, the inner wall of the inner cavity 407 being slidably connected to the upper extrusion block 401, a lower extrusion block 405 fixedly connected to the top of the telescopic rod 402, the lower extrusion block 405 being slidably connected to the inner wall of the inner cavity 407, a threaded rod 404 rotatably connected to the top of the lower extrusion block 405, the threaded rod 404 passing through the top of the second air preheater substrate 2 and being threadedly connected to the passing portion, a second knob 403 fixedly connected to the top of the threaded rod 404, and a second spring 406 fixedly connected between the lower extrusion block 405 and the upper extrusion block 401, the second spring 406 being sleeved on the outer wall of the telescopic rod 402.

[0028] With the above scheme, rotating the second knob 403 causes the threaded rod 404 to descend relative to the second air preheater substrate 2 due to the threaded connection between the threaded rod 404 and the top end of the second air preheater substrate 2. This pushes the lower extrusion block 405 downward, and the force of the lower extrusion block 405 downward is transmitted to the upper extrusion block 401 through the second spring 406. The upper extrusion block 401 then tightly presses the sealing gasket 5.

[0029] Working principle: When operating and using this utility model, as follows... Figures 1 to 4As shown, during use, the first air preheater base plate 1 and the second air preheater base plate 2 are brought into contact, and the sealing gasket 5 is initially brought into contact. Then, the first knob 304 is pressed, causing the locking lever 303 to descend and the first spring 306 to be compressed. The locking bolt 308 passes through the locking groove 302 during the downward push. Rotating the first knob 304 releases it, and under the action of the first spring 306, the locking bolt 308 is tightly locked into the lower sleeve 309, completing the installation of the locking mechanism 3. Then, the second knob 403 is rotated, because... The threaded rod 404 is threadedly connected to the top of the second air preheater base plate 2. Therefore, the threaded rod 404 descends relative to the second air preheater base plate 2, pushing the lower extrusion block 405 downward. The force of the lower extrusion block 405 is transmitted to the upper extrusion block 401 through the second spring 406. The upper extrusion block 401 tightly presses the sealing gasket 5. Due to the reaction force, the engagement between the bolt 308 and the lower sleeve 309 becomes more secure. The clamping mechanism 3 and the tightening sealing assembly 4 cooperate to improve the sealing effect.

[0030] The above are merely illustrative embodiments of this utility model and are not intended to limit the scope of this utility model. Any equivalent changes and modifications made by those skilled in the art without departing from the concept and principles of this utility model should fall within the protection scope of this utility model. Furthermore, it should be noted that the components of this utility model are not limited to the overall application described above. Each technical feature described in the specification of this utility model can be used individually or in combination as needed. Therefore, this utility model naturally covers other combinations and specific applications related to the points of this utility model.

Claims

1. An air preheater coupling sealing device, comprising a first air preheater substrate (1), characterized in that: The first air preheater substrate (1) is provided with a sealing gasket (5) at the top, and the sealing gasket (5) is provided with a second air preheater substrate (2) at the top. The second air preheater substrate (2) is provided with two clamping mechanisms (3) on both sides of the top. A tightening and sealing assembly (4) is provided between the two clamping mechanisms (3). The clamping mechanism (3) includes a first groove (301), which is opened at the top of the first air preheater substrate (1). A lower sleeve (309) is fixedly connected to the inner wall of the first groove (301), and a slot (302) is opened at the top of the lower sleeve (309).

2. The air preheater coupling sealing device according to claim 1, characterized in that: The second air preheater substrate (2) has a through hole (307) inside. The second air preheater substrate (2) has a locking rod (303) inside. The outer wall of the locking rod (303) is movably locked with an upper sleeve (305). The upper sleeve (305) is fixedly sleeved on the inner wall of the through hole (307). The top of the locking rod (303) is fixedly connected with a first knob (304). The locking rod (303) and the inner wall of the upper sleeve (305) are fixedly connected with a first spring (306). The lower end of the locking rod (303) is fixedly connected with a latch (308).

3. The air preheater coupling sealing device according to claim 2, characterized in that: The size of the latch (308) matches that of the slot (302).

4. The air preheater coupling sealing device according to claim 1, characterized in that: The tightening and sealing assembly (4) includes an upper extrusion block (401), a telescopic rod (402) is fixedly connected to the top of the upper extrusion block (401), an inner cavity (407) is opened inside the second air preheater substrate (2), the inner wall of the inner cavity (407) is slidably connected to the upper extrusion block (401), a lower extrusion block (405) is fixedly connected to the top of the telescopic rod (402), the lower extrusion block (405) is slidably connected to the inner wall of the inner cavity (407), a threaded rod (404) is rotatably connected to the top of the lower extrusion block (405), the threaded rod (404) passes through the top of the second air preheater substrate (2) and is threadedly connected to the through part, and a second knob (403) is fixedly connected to the top of the threaded rod (404).

5. The air preheater coupling sealing device according to claim 4, characterized in that: A second spring (406) is fixedly connected between the lower extrusion block (405) and the upper extrusion block (401), and the second spring (406) is sleeved on the outer wall of the telescopic rod (402).

6. The air preheater coupling sealing device according to claim 1, characterized in that: The clamping mechanism (3) and the tightening sealing assembly (4) are each a number, and are linearly and alternately distributed on the top of the second air preheater substrate (2).

7. The air preheater coupling sealing device according to claim 1, characterized in that: The first air preheater substrate (1) and the second air preheater substrate (2) have the same size and shape.

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