Blockage control structure of heat storage element of air preheater

Abstract

The utility model discloses a blockage control structure of a heat storage element of an air preheater, which comprises a preheater shell, a heat storage element group is arranged in the preheater shell, an outlet frame is fixedly embedded on the right side surface of the heat storage element, two air inlets are arranged on the left side surface of the preheater shell, and the air inlets are communicated with the outlet frame. The left side face of the preheater shell is fixedly connected with conical air inlet frames, each conical air inlet frame is located on the left side of the air inlet, the left side face of each conical air inlet frame is fixedly communicated with an air inlet cylinder, and the inner wall of each air inlet cylinder is fixedly connected with an air inlet spiral piece. According to the device, through the arrangement of the air inlet cylinder, the air inlet spiral piece, the wave plate and the dust filtering net frame, smoke entering the preheater can be blocked in a spiral and wave mode, dust particles in the smoke can fall off, dust is filtered and removed through the dust filtering net frame, the cleanliness of the smoke is improved, and the service life of the smoke is prolonged. The problem that a heat storage element of the preheater is prone to being blocked is effectively solved, and safe and stable use of the air preheater is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of air preheaters, in particular to a blocking control structure of a heat storage element of an air preheater. Background Art

[0002] An air preheater is a heating surface that preheats the flue gas in the tail flue of the boiler to a certain temperature through the internal heat sink. It is a device used to improve the heat exchange performance of the boiler and reduce energy consumption. Air preheaters are generally divided into three types: plate type, rotary type and tube type.

[0003] The current air preheater still has certain shortcomings when in use. When the flue gas enters the air preheater, the dust particles inside the flue gas cannot be effectively filtered and discharged. The dust particles enter the heat storage element of the air preheater, causing blockage of the heat storage element, which is not conducive to the safe and stable use of the air preheater. For this reason, we propose a control and blocking structure of the heat storage element of the air preheater to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a blocking control structure of a heat storage element of an air preheater to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A blocking control structure for a heat storage element of an air preheater comprises a preheater shell, a heat storage element group is arranged inside the preheater shell, an outlet frame is fixedly embedded on the right side surface of the heat storage element, two air inlets are arranged on the left side surface of the preheater shell, a conical air inlet frame is fixedly connected to the left side surface of the preheater shell, each of the conical air inlet frames is located on the left side of the air inlet, an air inlet cylinder is fixedly connected to the left side surface of each of the conical air inlet frames, an air inlet spiral sheet is fixedly connected to the inner wall of each of the air inlet cylinders, a group of corrugated plates is fixedly connected to the inner wall of each of the conical air inlet frames, two card-mounting grooves are arranged on the inner side wall of the preheater shell, and a dust filter grid is card-mounted on the inner wall of each of the card-mounting grooves.

[0007] In a further embodiment, a mounting frame is fixedly connected to the inner wall of the outlet frame, and a filter screen is fixedly connected to the inner wall of the mounting frame.

[0008] In a further embodiment, the inner side wall of the preheater shell is fixedly connected with two groups of fixing plates by two groups of mounting screws, and the left side surface of each of the fixing plates is fixedly connected with the right side surface of the dust filter frame.

[0009] In a further embodiment, two lifting rings are fixedly connected to the upper surface of the preheater shell, and the lifting rings are located in the middle of the preheater shell.

[0010] In a further embodiment, a connecting flange is fixedly connected to the left end of each of the air inlet cylinders, and a group of connecting holes is opened on the left side surface of each of the connecting flanges.

[0011] In a further embodiment, an annular groove is formed on the left side surface of each of the connecting flanges, and a sealing gasket is clamped on the inner wall of each of the annular grooves.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device can conveniently lift the preheater shell and realize the sealed connection and installation of the preheater shell through the provided lifting ring, connecting flange, connecting hole and sealing gasket, which is convenient for the installation operation of the preheater. The device can block the flue gas entering the preheater in a spiral and wave form through the provided air intake cylinder, air intake spiral blade, corrugated plate and dust filter grid, so as to realize the shedding of dust particles in the flue gas, filter and remove dust through the dust filter grid, thereby increasing the cleanliness of the flue gas, effectively solving the problem that the heat storage element of the preheater is easily blocked, and facilitating the safe and stable use of the air preheater. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the control and blocking structure of the air preheater heat storage element.

[0015] Figure 2 This is a rear view of the preheater shell in the control and blocking structure of the air preheater heat storage element.

[0016] Figure 3 It is a cross-sectional view of the top view of the preheater shell in the control and blocking structure of the air preheater heat storage element.

[0017] Figure 4 It is a sectional view of the side view of the preheater shell in the control and blocking structure of the air preheater heat storage element.

[0018] In the figure: 1. preheater housing; 2. conical air inlet frame; 3. connecting flange; 4. air inlet spiral blade; 5. connecting hole; 6. sealing gasket; 7. annular groove; 8. lifting ring; 9. outlet frame; 10. mounting frame; 11. filter screen; 12. heat storage element group; 13. mounting groove; 14. fixing plate; 15. dust filter grid; 16. air inlet cylinder; 17. corrugated plate; 18. air inlet. DETAILED DESCRIPTION

[0019] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it 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 it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4In the utility model, a control and blocking structure of a heat storage element of an air preheater comprises a preheater shell 1, a heat storage element group 12 is arranged inside the preheater shell 1, and the right side of the heat storage element is fixedly inlaid with an outlet frame 9, and the left side of the preheater shell 1 is provided with two air inlets 18, and the left side of the preheater shell 1 is fixedly connected with a conical air inlet frame 2, each of which is located on the left side of the air inlet 18, and the left side of each conical air inlet frame 2 is fixedly connected with an air inlet cylinder 16, and each inlet The inner wall of the air cylinder 16 is fixedly connected with an air intake spiral sheet 4, and the inner wall of each conical air intake frame 2 is fixedly connected with a group of wave plates 17. Through the air intake spiral sheet 4 and the wave plates 17, the flue gas entering the preheater can be blocked in a spiral and wave form, which is convenient for the shedding and separation of dust particles in the flue gas. The inner wall of the preheater shell 1 is provided with two card slots 13, and the inner wall of each card slot 13 is carded with a dust filter rack 15. The dust filter rack 15 can filter and remove impurities from the flue gas, thereby effectively maintaining the cleanliness of the flue gas.

[0023] The inner wall of the outlet frame 9 is fixedly connected with a mounting frame 10, and the inner wall of the mounting frame 10 is fixedly connected with a filter screen 11, which can prevent external dust from entering the interior of the preheater housing 1 and avoid clogging of the heat storage element group 12. The inner wall of the preheater housing 1 is fixedly connected with two groups of fixing plates 14 by two groups of mounting screws. The left side of each fixing plate 14 is fixedly connected to the right side of the dust filter grid 15, so that the dust filter grid 15 can be installed and fixed, which is convenient for the stable dust filtering use of the dust filter grid 15.

[0024] Two lifting rings 8 are fixedly connected to the upper surface of the preheater shell 1. The lifting ring 8 is located in the middle of the preheater shell 1, which can conveniently lift the preheater shell 1 and facilitate the installation operation of the air preheater. The left end of each air inlet cylinder 16 is fixedly connected to a connecting flange 3, and a group of connecting holes 5 are opened on the left side of each connecting flange 3. An annular groove 7 is opened on the left side of each connecting flange 3, and a sealing gasket 6 is clamped on the inner wall of each annular groove 7, which can facilitate the sealed connection and installation of the air preheater and the flue gas exhaust pipe.

[0025] The working principle of the utility model is:

[0026] When in use, first use the lifting equipment to hang on the lifting ring 8 to lift the air preheater, and seal the air preheater with the flue gas outlet through the connecting flange 3, the connecting hole 5 and the sealing gasket 6. The flue gas enters the heat storage element group 12 through the air inlet cylinder 16, the conical air inlet frame 2 and the air inlet 18 to store heat energy and heat, and then is discharged through the outlet frame 9 for heat utilization. Before the flue gas enters the heat storage element group 12, the air inlet spiral sheet 4 and the wave plate 17 are used to block the flue gas in a spiral and wave form to increase the falling content of particles inside the flue gas, and the dust filter grid 15 is used for dust filtration to effectively keep the flue gas clean and prevent impurities inside the flue gas from clogging the heat storage element group 12, thereby achieving stable use of the air preheater.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A blocking control structure for a heat storage element of an air preheater, characterized in that: The invention comprises a preheater shell (1), wherein a heat storage element group (12) is arranged inside the preheater shell (1), an outlet frame (9) is fixedly embedded on the right side of the heat storage element, two air inlets (18) are provided on the left side of the preheater shell (1), a conical air inlet frame (2) is fixedly connected to the left side of the preheater shell (1), each of the conical air inlet frames (2) is located on the left side of the air inlet (18), the left side of each of the conical air inlet frames (2) is fixedly connected to an air inlet cylinder (16), the inner wall of each of the air inlet cylinders (16) is fixedly connected to an air inlet spiral sheet (4), the inner wall of each of the conical air inlet frames (2) is fixedly connected to a group of corrugated plates (17), and the inner wall of the preheater shell (1) is provided with two clamping grooves (13), and the inner wall of each of the clamping grooves (13) is clamped with a dust filter frame (15).

2. The blocking control structure of the heat storage element of an air preheater according to claim 1, characterized in that: The inner wall of the outlet frame (9) is fixedly connected to a mounting frame (10), and the inner wall of the mounting frame (10) is fixedly connected to a filter screen (11).

3. The blocking control structure of the heat storage element of an air preheater according to claim 1, characterized in that: The inner side wall of the preheater shell (1) is fixedly connected to two groups of fixing plates (14) via two groups of mounting screws, and the left side surface of each fixing plate (14) is fixedly connected to the right side surface of the dust filter frame (15).

4. The blocking control structure of the heat storage element of an air preheater according to claim 1, characterized in that: Two lifting rings (8) are fixedly connected to the upper surface of the preheater shell (1), and the lifting rings (8) are located in the middle of the preheater shell (1).

5. The blocking control structure of the heat storage element of an air preheater according to claim 1, characterized in that: The left end of each air inlet cylinder (16) is fixedly connected to a connecting flange (3), and the left side surface of each connecting flange (3) is provided with a group of connecting holes (5).

6. The blocking control structure of the heat storage element of an air preheater according to claim 5, characterized in that: An annular groove (7) is provided on the left side surface of each connecting flange (3), and a sealing gasket (6) is clamped on the inner wall of each annular groove (7).

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