Air pre-heater air duct flow guide device

Abstract

The utility model discloses an air pre-heater air duct flow guiding device which comprises an air pipe, a flow guiding piece, a supporting piece and a flow equalizing plate. The flow guide piece comprises a first flow guide plate, and the first flow guide plate comprises a first horizontal plate and a first inclined plate; one end of the first horizontal plate is fixedly connected with a first inclined plate; the first horizontal plate and the first inclined plate form a certain angle in the section direction; the first horizontal plate and the first inclined plate are fixedly connected to the interior of the air pipe through supporting pieces; the flow equalizing plate is fixedly connected to the side, close to the output end of the inclined plate, of the air pipe. According to the air preheater, the problems that in the prior art, uneven airflow enters the air preheater, the flow deviation of all heat exchange parts in the air preheater is large, and the performance and the service life of the air preheater are seriously affected are solved, and the technical effect of uniform air channel airflow is achieved.

Description

Technical Field

[0001] The present application relates to the field of air preheaters, and in particular to an air duct guide device for an air preheater. Background Art

[0002] In the field of air preheater system transformation, cold air enters the air preheater through the inlet duct. Since the inlet duct has a certain angle with the air preheater and has a certain shape, the cold air forms a high-speed jet and a large swirl. After this uneven airflow enters the air preheater, the flow deviations in various heat exchange parts in the air preheater are large, which seriously affects the performance and service life of the air preheater. Utility Model Content

[0003] The embodiment of the present application provides an air preheater duct guide device to solve the problem in the prior art that uneven airflow enters the air preheater, causing large flow deviations in various heat exchange parts in the air preheater, thereby seriously affecting the performance and service life of the air preheater, thereby achieving the technical effect of uniform duct airflow.

[0004] An embodiment of the utility model provides an air preheater air duct guide device, comprising an air duct, a guide member, a support member and a flow equalizer; the guide member comprises a first guide plate, the first guide plate comprises a first horizontal plate and a first inclined plate; one end of the first horizontal plate is fixedly connected to the first inclined plate; the first horizontal plate and the first inclined plate form a certain angle in the cross-sectional direction; the first horizontal plate and the first inclined plate are both fixedly connected to the inside of the air duct through the support member; the flow equalizer is fixedly connected to the outlet end of the air duct.

[0005] In a possible implementation, the guide member also includes a second guide plate; the second guide plate includes a second horizontal plate and a second inclined plate; one end of the second horizontal plate is fixedly connected to the second inclined plate, and the second horizontal plate and the second inclined plate form a certain angle in the cross-sectional direction; the second horizontal plate and the second inclined plate are both fixedly connected to the inside of the air duct through the support member.

[0006] In a possible implementation, the support member includes a vertical support rod and an inclined support rod; one end of the inclined support rod is fixedly connected to one end of the vertical support rod close to the flow equalizing plate; the inclined support rod and the vertical support rod form a certain angle in the longitudinal cross-sectional direction of the air duct; the first horizontal plate and the second horizontal plate are both fixedly connected to the interior of the air duct through the vertical support rod and the inclined support rod, and the first inclined plate and the second inclined plate are both fixedly connected to the interior of the air duct through the inclined support rod.

[0007] In a possible implementation, the flow equalizing plate includes a first flow equalizing plate and a second flow equalizing plate; the first flow equalizing plate includes a perforated plate with a porosity set to 40%, and the second flow equalizing plate includes a perforated plate with a porosity set to 50%; the first flow equalizing plate is fixedly connected to both sides of the second flow equalizing plate; the first flow equalizing plate and the second flow equalizing plate are both fixedly connected to the outlet end of the air duct.

[0008] In a possible implementation, the first guide plate also includes a first additional inclined plate, and the second guide plate also includes a second additional inclined plate; one end of the first additional inclined plate is fixedly connected to an end of the first inclined plate away from the vertical support rod; the first additional inclined plate forms a certain angle with the first inclined plate in the cross-sectional direction; one end of the second additional inclined plate is fixedly connected to an end of the second inclined plate away from the vertical support rod; the second additional inclined plate forms a certain angle with the second inclined plate in the cross-sectional direction.

[0009] In a possible implementation, the support member also includes a horizontal support rod; the horizontal support rod is fixedly connected to the inside of the air duct, and the horizontal support rod and the vertical support rod are at 90° in the longitudinal section direction of the air duct; the first additional inclined plate and the second additional inclined plate are fixedly connected to the horizontal support rod at one end away from the vertical support rod.

[0010] One or more technical solutions provided by this application have at least the following technical effects:

[0011] The embodiment of the utility model adopts an air duct, a guide, a support and a flow equalizer, wherein the guide comprises a first guide, the first guide comprises a first horizontal plate and a first inclined plate, one end of the first horizontal plate is fixedly connected to the first inclined plate, the first horizontal plate and the first inclined plate are both fixedly connected to the inside of the air duct through the support, so that the airflow passing through the air duct can pass through the guide, and the guide can equalize the airflow in the air duct; further, the first horizontal plate and the first inclined plate are at a certain angle in the cross-sectional direction, and the setting of this angle can make the guide have a better effect of equalizing the airflow, and the equalizer is fixedly connected to the side of the air duct close to the output end of the inclined plate, and the equalizer can continue to process the airflow passing through the guide, and further equalize the airflow. The present application solves the problem in the prior art that uneven airflow enters the air preheater, causing large flow deviations in various heat exchange parts in the air preheater, thereby seriously affecting the performance and service life of the air preheater, and achieves the technical effect of uniform airflow in the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 An axonometric cross-sectional view of an air duct guide device for an air preheater provided in an embodiment of the present application;

[0014] Figure 2 A front view of an air duct guide device for an air preheater provided in an embodiment of the present application;

[0015] Figure 3 A front view of the guide member and the support member provided in the embodiment of the present application;

[0016] Figure 4 A schematic diagram of a first current equalizing plate provided in an embodiment of the present application;

[0017] Figure 5 A schematic diagram of a second current equalizing plate provided in an embodiment of the present application.

[0018] Icons: 1-air duct; 2-guide member; 21-first guide plate; 211-first horizontal plate; 212-first inclined plate; 213-first additional inclined plate; 22-second guide plate; 221-second horizontal plate; 222-second inclined plate; 223-second additional inclined plate; 23-third guide plate; 231-third horizontal plate; 232-third inclined plate; 24-fourth guide plate; 241-fourth horizontal plate; 242-fourth inclined plate; 25-fifth guide plate; 251-fifth horizontal plate; 252-fifth inclined plate; 3-support member; 31-vertical support rod; 32-inclined support rod; 321-first inclined support rod; 322-second inclined support rod; 33-horizontal support rod; 4-flow balancing plate; 41-first flow balancing plate; 42-second flow balancing plate. DETAILED DESCRIPTION

[0019] 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 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.

[0020] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of 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. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "connected", and "connected" 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 indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0021] The utility model provides an air duct guide device for an air preheater, such as Figure 1 and Figure 2 As shown, it includes an air duct 1, a guide member 2, a support member 3 and a flow equalizer 4; the guide member 2 includes a first guide plate 21, and the first guide plate 21 includes a first horizontal plate 211 and a first inclined plate 212; one end of the first horizontal plate 211 is fixedly connected to the first inclined plate 212; the first horizontal plate 211 and the first inclined plate 212 form a certain angle in the cross-sectional direction; the first horizontal plate 211 and the first inclined plate 212 are both fixedly connected to the inside of the air duct 1 through the support member 3; the flow equalizer 4 is fixedly connected to the outlet end of the air duct 1.

[0022] Exemplarily, the support member 3 is welded and fixed to the air duct 1, and the guide member 2 is welded and fixed to the support member 3; the first horizontal plate 211 and the first inclined plate 212 of the first guide plate 21 are 140° in the cross-sectional direction, which can ensure that the airflow can flow along the guiding direction of the first horizontal plate 211 and the first inclined plate 212 after contacting the first horizontal plate 211 and the first inclined plate 212. The angle setting of the first horizontal plate 211 and the first inclined plate 212 in the cross-sectional direction can make the airflow more uniform.

[0023] Furthermore, the flow equalizer 4 is arranged at the outlet end of the air duct 1, so that after the airflow is guided by the first guide plate 21, the airflow is further processed by the flow equalizer 4, so that the airflow received by the air preheater is more uniform, thereby meeting the normal use of the air preheater and extending the service life of the air preheater.

[0024] In the present application embodiment, Figure 2 and Figure 3As shown, the guide member 2 further includes a second guide plate 22; the second guide plate 22 includes a second horizontal plate 221 and a second inclined plate 222; one end of the second horizontal plate 221 is fixedly connected to the second inclined plate 222, and the second horizontal plate 221 and the second inclined plate 222 form a certain angle in the cross-sectional direction; the second horizontal plate 221 and the second inclined plate 222 are both fixedly connected to the inside of the air duct 1 through the support member 3;

[0025] Exemplarily, the second horizontal plate 221 and the second inclined plate 222 of the second guide plate 22 form a 145° cross-sectional angle, and the second guide plate 22 is fixedly connected to the support member 3 , and the support member 3 is welded to the inside of the air duct 1 .

[0026] Exemplarily, the guide member 2 further includes a third guide plate 23, which includes a third horizontal plate 231 and a third inclined plate 232; one end of the third horizontal plate 231 is fixedly connected to the third inclined plate 232, and the third horizontal plate 231 and the third inclined plate 232 are 148° in the cross-sectional direction; the third horizontal plate 231 and the third inclined plate 232 are both fixedly connected to the inside of the air duct 1 through the support member 3;

[0027] Exemplarily, the guide member 2 further includes a fourth guide plate 24, which includes a fourth horizontal plate 241 and a fourth inclined plate 242; one end of the fourth horizontal plate 241 is fixedly connected to the fourth inclined plate 242, and the fourth horizontal plate 241 and the fourth inclined plate 242 are 160° in the cross-sectional direction; the fourth horizontal plate 241 and the fourth inclined plate 242 are both fixedly connected to the inside of the air duct 1 through the support member 3;

[0028] Exemplarily, the guide member 2 further includes a fifth guide plate 25, which includes a fifth horizontal plate 251 and a fifth inclined plate 252; one end of the fifth horizontal plate 251 is fixedly connected to the fifth inclined plate 252, and the fifth horizontal plate 251 and the fifth inclined plate 252 are 165° in the cross-sectional direction; the fifth horizontal plate 251 and the fifth inclined plate 252 are both fixedly connected to the inside of the air duct 1 through the support member 3;

[0029] Exemplarily, the first guide plate 21, the second guide plate 22, the third guide plate 23, the fourth guide plate 24 and the fifth guide plate 25 are distributed in layers from top to bottom in the air duct, and the horizontal plates and the inclined plates of the first guide plate 21, the second guide plate 22, the third guide plate 23, the fourth guide plate 24 and the fifth guide plate 25 have different deflection angles, so that the high-speed jet flow and large swirl flow generated by the air in the air duct 1 due to the certain shape can be evened out by the guide member 2 arranged in the air duct 1; further, the evenly evened airflow entering the guide member 2 is then processed by the equalizer 4, so that the airflow received by the air preheater is more uniform, thereby meeting the normal use of the air preheater and extending the service life of the air preheater.

[0030] In the present application embodiment, Figure 2 and Figure 3 As shown, the support member 3 includes a vertical support rod 31 and an inclined support rod 32; one end of the inclined support rod 32 is fixedly connected to one end of the vertical support rod 31 close to the equalizing plate 4; the inclined support rod 32 and the vertical support rod 31 form a certain angle in the longitudinal section direction of the air duct 1; the first horizontal plate 211 and the second horizontal plate 221 are both fixedly connected to the inside of the air duct 1 through the vertical support rod 31 and the inclined support rod 32, and the first inclined plate 212 and the second inclined plate 222 are both fixedly connected to the inside of the air duct 1 through the inclined support rod 32.

[0031] Exemplarily, the vertical support rod 31 and the inclined support rod 32 are made of square tubes, and the vertical support rod 31 and the inclined support rod 32 are welded and fixed to the air duct 1. The inclined support rod 32 and the vertical support rod 31 form a certain angle in the longitudinal section direction, and the angle can be adjusted according to the guide member 2, so that the guide member 2 can be firmly installed in the air duct 1.

[0032] Exemplarily, the inclined support rod 32 includes a first inclined support rod 321 and a second inclined support rod 322; one end of the first inclined support rod 321 and one end of the second inclined support rod 322 are both fixedly connected to one end of the vertical support rod 31 close to the flow equalizing plate 4; the first horizontal plate 211, the second horizontal plate 221, the third horizontal plate 231, the fourth horizontal plate 241 and the fifth horizontal plate 251 are all fixedly connected to the interior of the air duct 1 through the vertical support rod 31 and the first inclined support rod 321; the first inclined plate 212, the second inclined plate 222, the third inclined plate 232, the fourth inclined plate 242 and the fifth inclined plate 252 are all fixedly connected to the interior of the air duct 1 through the second inclined support rod 322.

[0033] In the present application embodiment, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the flow equalizing plate 4 includes a first flow equalizing plate 41 and a second flow equalizing plate 42; the first flow equalizing plate 41 includes a perforated plate with a porosity set to 40%, and the second flow equalizing plate 42 includes a perforated plate with a porosity set to 50%; the first flow equalizing plate 41 is fixedly connected to both sides of the second flow equalizing plate 42; the first flow equalizing plate 41 and the second flow equalizing plate 42 are both fixedly connected to the outlet end of the air duct 1.

[0034] Exemplarily, the second flow equalizing plate 42 is disposed at the middle portion of the outlet of the air duct 1, and the first flow equalizing plate 41 is disposed at both sides of the second flow equalizing plate 42, and can also be disposed according to actual needs.

[0035] For example, Figure 2As shown, three first current equalizing plates 41 are provided, and two second current equalizing plates 42 are provided. One end of the two second current equalizing plates 42 is fixedly connected, and the other end of the two second current equalizing plates 42 is fixedly connected to the first current equalizing plate 41. The number and arrangement order of the first current equalizing plates 41 and the second current equalizing plates 42 are provided according to actual needs.

[0036] For example, Figure 4 , Figure 5 As shown, the current balancing plate 4 is provided with evenly distributed small holes, the number and distribution distance of the small holes of the first current balancing plate 41 and the small holes of the second current balancing plate 42 are different, and the small holes of the first current balancing plate 41 and the small holes of the second current balancing plate 42 can respectively cover the upper surfaces of the first current balancing plate 41 and the second current balancing plate 42.

[0037] In the present application embodiment, Figure 1 , Figure 2 and Figure 3 As shown, the first guide plate 21 also includes a first additional inclined plate 213, and the second guide plate 22 also includes a second additional inclined plate 223; one end of the first additional inclined plate 213 is fixedly connected to the end of the first inclined plate 212 away from the vertical support rod 31; the first additional inclined plate 213 and the first inclined plate 212 form a certain angle in the cross-sectional direction; one end of the second additional inclined plate 223 is fixedly connected to the end of the second inclined plate 222 away from the vertical support rod 31; the second additional inclined plate 223 and the second inclined plate 222 form a certain angle in the cross-sectional direction.

[0038] Exemplarily, the first additional inclined plate 213 is 150° to the first inclined plate 212 in the cross-sectional direction, and the second additional inclined plate 223 is 150° to the second inclined plate 222 in the cross-sectional direction; this can ensure that the airflow flows along the guiding direction of the first additional inclined plate 213 and the second additional inclined plate 223 after contacting the first additional inclined plate 213 and the second additional inclined plate 223, and the angle setting of the first additional inclined plate 213 and the first inclined plate 212 in the cross-sectional direction and the angle setting of the second additional inclined plate 223 and the second inclined plate 222 in the cross-sectional direction have better effects in terms of uniform airflow.

[0039] In the present application embodiment, Figure 2 , Figure 3 As shown, the support member 3 also includes a horizontal support rod 33; the horizontal support rod 33 is fixedly connected to the inside of the air duct 1, and the horizontal support rod 33 and the vertical support rod 31 are 90° in the longitudinal section direction of the air duct 1; the first additional inclined plate 213 and the second additional inclined plate 223 are fixedly connected to the horizontal support rod 33 at one end away from the vertical support rod 31.

[0040] Exemplarily, the horizontal support rod 33 is made of a square tube, and the first additional inclined plate 213 and the second additional inclined plate 223 can be fixedly connected to the inside of the air duct 1 through the horizontal support rod 33. The setting of the horizontal support rod 33 can improve the strength of the guide member 2 and ensure the reliability of the guide member 2.

[0041] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other. Each embodiment focuses on the differences from other embodiments.

[0042] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit the present application. Although the present application has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some or all of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the present application.

Claims

1. An air duct guide device for an air preheater, characterized in that: It comprises an air duct (1), a flow guide (2), a support (3) and a flow equalizing plate (4); The flow guide member (2) comprises a first flow guide plate (21), wherein the first flow guide plate (21) comprises a first horizontal plate (211) and a first inclined plate (212); One end of the first horizontal plate (211) is fixedly connected to the first inclined plate (212); the first horizontal plate (211) and the first inclined plate (212) form a certain angle in the cross-sectional direction; The first horizontal plate (211) and the first inclined plate (212) are both fixedly connected to the interior of the air duct (1) via the support member (3); The flow equalizing plate (4) is fixedly connected to the outlet end of the air duct (1).

2. The air duct guide device for an air preheater according to claim 1, characterized in that: The flow guide member (2) further comprises a second flow guide plate (22); The second guide plate (22) comprises a second horizontal plate (221) and a second inclined plate (222); One end of the second horizontal plate (221) is fixedly connected to the second inclined plate (222), and the second horizontal plate (221) and the second inclined plate (222) form a certain angle in the cross-sectional direction; The second horizontal plate (221) and the second inclined plate (222) are both fixedly connected to the interior of the air duct (1) via the support member (3).

3. The air duct guide device for an air preheater according to claim 2, characterized in that: The support member (3) comprises a vertical support rod (31) and an inclined support rod (32); One end of the inclined support rod (32) is fixedly connected to one end of the vertical support rod (31) close to the flow equalizing plate (4); the inclined support rod (32) and the vertical support rod (31) form a certain angle in the longitudinal cross-sectional direction of the air duct (1); The first horizontal plate (211) and the second horizontal plate (221) are both fixedly connected to the interior of the air duct (1) via the vertical support rod (31) and the inclined support rod (32), and the first inclined plate (212) and the second inclined plate (222) are both fixedly connected to the interior of the air duct (1) via the inclined support rod (32).

4. The air duct guide device for an air preheater according to claim 1, characterized in that: The current balancing plate (4) comprises a first current balancing plate (41) and a second current balancing plate (42); The first flow balancing plate (41) comprises a perforated plate with a porosity of 40%, and the second flow balancing plate (42) comprises a perforated plate with a porosity of 50%; The first current balancing plate (41) is fixedly connected to both sides of the second current balancing plate (42); The first flow balancing plate (41) and the second flow balancing plate (42) are both fixedly connected to the outlet end of the air duct (1).

5. The air duct guide device for an air preheater according to claim 3, characterized in that: The first guide plate (21) further includes a first additional inclined plate (213), and the second guide plate (22) further includes a second additional inclined plate (223); One end of the first additional inclined plate (213) is fixedly connected to one end of the first inclined plate (212) away from the vertical support rod (31); the first additional inclined plate (213) and the first inclined plate (212) form a certain angle in the cross-sectional direction; One end of the second additional inclined plate (223) is fixedly connected to one end of the second inclined plate (222) away from the vertical support rod (31); the second additional inclined plate (223) and the second inclined plate (222) form a certain angle in the cross-sectional direction.

6. The air duct guide device for an air preheater according to claim 5, characterized in that: The support member (3) further comprises a horizontal support rod (33); The horizontal support rod (33) is fixedly connected to the inside of the air duct (1), and the horizontal support rod (33) and the vertical support rod (31) are at 90 degrees in the longitudinal section direction of the air duct (1); One end of the first additional inclined plate (213) and the second additional inclined plate (223) away from the vertical support rod (31) is fixedly connected to the horizontal support rod (33).

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