Multi-stage flow-equalizing anti-abrasion device for inlet of waste heat boiler

Abstract

The utility model discloses a multi-stage flow-equalizing anti-abrasion device for an inlet of a waste heat boiler, belongs to the technical field of flue gas conveying, and aims to solve the technical problems that in the prior art, when high-temperature waste gas enters the waste heat boiler, flue gas is distributed in a scattered mode, and the waste heat boiler is locally scoured and abraded due to the fact that the flow speed of the flue gas is not uniform. The multi-stage flow-equalizing anti-abrasion device for the waste heat boiler inlet comprises a flow-equalizing frame body, and a plurality of layers of flow-equalizing plates are assembled in the flow-equalizing frame body. According to the multistage flow equalizing anti-abrasion device for the waste heat boiler inlet, the structural mode that the multiple guide vanes swing in a reciprocating mode in combination with the multiple layers of flow equalizing plates is adopted, multi-stage uniform guiding and conveying of smoke are achieved, it is guaranteed that the smoke entering the waste heat boiler is evenly distributed at the flue inlet, the problems of local scouring and abrasion caused by the fact that the flow speed of the smoke is uneven are solved, and the service life of the waste heat boiler is prolonged. The service life of the waste heat boiler is prolonged, abrasion of smoke to the flow equalizing plate is reduced, meanwhile, local blockage of the flow equalizing plate is avoided, and the waste heat boiler is more durable.

Description

TECHNICAL FIELD

[0001] The utility model belongs to flue gas conveying technical field, concretely relates to a multi-stage flow equalizing anti-abrasion device for waste heat boiler inlet. BACKGROUND

[0002] In the industrial production process, many process equipment will produce a large amount of high-temperature waste gas, waste water or other forms of waste heat when running, and if these waste heat is not recycled, it will be directly discharged into the environment, resulting in huge waste of energy. Waste heat boiler can utilize the waste heat resources in various industrial processes to heat water into steam or hot water through heat exchange process, significantly reducing the energy consumption and production cost of enterprises, at the same time, the steam or hot water generated by waste heat boiler can also be directly used for heating, power generation or heating process in the production line of enterprises, further improving the economic benefit of enterprises, and is widely used in energy-intensive industries such as steel, chemical industry, cement and electric power.

[0003] In the actual application process of waste heat boiler, when a large amount of high-temperature waste gas enters the waste heat boiler, the flue gas is scattered and distributed, and there is a problem of local erosion and abrasion of waste heat boiler caused by uneven flue gas flow rate, which reduces the service life of waste heat boiler, therefore, the application provides a multi-stage flow equalizing anti-abrasion device for waste heat boiler inlet. CONTENT OF THE UTILITY MODEL

[0004] In view of the defects of the prior art, the utility model aims at providing a multi-stage flow equalizing anti-abrasion device for waste heat boiler inlet, which aims at solving the technical problem of local erosion and abrasion of waste heat boiler caused by uneven flue gas flow rate when high-temperature waste gas enters the waste heat boiler.

[0005] TECHNICAL SCHEME

[0006] In order to solve the above technical problems, the utility model provides a multi-stage flow equalizing anti-abrasion device for waste heat boiler inlet, which comprises a flow equalizing frame, a flow equalizing plate is assembled in the flow equalizing frame, and the flow equalizing plate is provided with multiple layers.

[0007] One end of the flow equalizing frame is connected with a flow guide frame, flow guide vanes are assembled in the flow guide frame, the flow guide vanes are provided with multiple, the side of the flow guide vanes away from the flow equalizing frame is rotationally installed, and a driving mechanism for driving the multiple flow guide vanes to swing is assembled on the flow guide frame.

[0008] Preferably, the two ends of the side of the multiple flow guide vanes towards the flow equalizing frame are commonly rotationally connected with a connecting rod.

[0009] Preferably, a mounting frame is assembled in the flow guide frame, the side of the flow guide vanes away from the flow equalizing frame is rotationally installed in the mounting frame, and a mounting hole is formed in the mounting frame.

[0010] Preferably, the driving mechanism comprises a connecting arm rotatably connected to the end of the connecting rod, a rotating arm rotatably connected to the end of the connecting arm away from the connecting rod, and a shaft rotatably connected to the end of the rotating arm away from the connecting arm, and a driving motor is mounted on the outer wall of the flow guide frame for driving the shaft to rotate.

[0011] Preferably, a fixed arm is rotatably sleeved on the shaft, and the fixed arm is fixed on the mounting frame.

[0012] Preferably, a fixed block is fixed on the inner wall of the flow equalizing frame close to the opening, a clamping screw is threaded through the fixed block, and an end of the clamping screw is provided with a pressing plate abutting against the flow equalizing plate.

[0013] Preferably, the pressing plate is movably inserted into the clamping screw, and a through groove is formed in the flow equalizing plate and capable of accommodating the fixed block.

[0014] Advantages

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The utility model discloses a plurality of flow guide vanes and a plurality of flow equalizing plates are arranged, flue gas is guided into the flow guide frame, transported through the flow equalizing frame into the waste heat boiler, the driving motor is started to drive the shaft to rotate, the shaft drives the rotating arm to rotate, the rotating arm drives the connecting arm to swing, the connecting arm drives the plurality of flow guide vanes to swing synchronously through the connecting rod, the plurality of flow guide vanes are used to guide and send the flue gas uniformly into the flow equalizing frame, the plurality of flow equalizing plates in the flow equalizing frame further equalize the flue gas guided and sent uniformly through the flow guide vanes, and the flue gas is uniformly transported into the waste heat boiler. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 Structure diagram of the guide vane in the utility model;

[0020] Figure 3 Structure diagram of the guide vane in the utility model; Figure 2 Enlarged view of A in the utility model;

[0021] Figure 4 Structure diagram of the flow-equalizing frame in the utility model;

[0022] Figure 5 Enlarged view of B in the utility model. Figure 4

[0023] The signs in the drawings are as follows: 1, flow-equalizing frame; 2, flow-guiding frame; 3, guide vane; 4, mounting frame; 5, mounting hole; 6, connecting rod; 7, shaft; 8, fixed arm; 9, driving motor; 10, connecting arm; 11, rotating arm; 12, flow-equalizing plate; 13, fixed block; 14, through slot; 15, pressing plate; 16, abutting screw. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] The embodiment provides a multi-stage flow-equalizing and anti-abrasion device for the inlet of a waste heat boiler, and a structure diagram is as shown in Figures 1-5 ​As shown, it comprises a flow equalization frame 1, a flow equalization plate 12 is assembled in the flow equalization frame 1, the flow equalization plate 12 is provided with multiple layers, one end of the flow equalization frame 1 is connected with a flow guide frame 2, a flow guide vane 3 is assembled in the flow guide frame 2, the flow guide vane 3 is provided with multiple, the multiple flow guide vanes 3 are rotatably installed away from one side of the flow equalization frame 1, the flow guide frame 2 is provided with a driving mechanism for driving the multiple flow guide vanes 3 to swing, the flue gas is guided into the flow equalization frame 1 by the flow guide frame 2 and is delivered to the waste heat boiler, the multiple flow guide vanes 3 are synchronously reciprocatingly swung by the driving mechanism, the flue gas is uniformly guided into the flow equalization frame 1 by the reciprocating swinging of the multiple flow guide vanes 3, the multiple layers of flow equalization plates 12 in the flow equalization frame 1 further equalize the flue gas uniformly guided by the flow guide vanes 3 and deliver the flue gas to the waste heat boiler, the overall structure of the multiple flow guide vanes 3 reciprocatingly swinging combined with the multiple layers of flow equalization plates 12 realizes the multi-stage uniform guiding of the flue gas, ensures that the flue gas entering the waste heat boiler is uniformly distributed at the flue inlet, reduces the local erosion and abrasion caused by the uneven flow rate of the flue gas, prolongs the service life of the waste heat boiler, in addition, the multiple flow guide vanes 3 reciprocatingly swinging can preliminarily uniformly guide the flue gas, reduces the abrasion of the flow equalization plate 12 by the flue gas and avoids the local blockage of the flow equalization plate 12, and is more durable.

[0026] In the embodiment, the multiple flow guide vanes 3 are rotatably connected with a connecting rod 6 at both ends of the side of the flow equalization frame 1, for realizing the synchronous rotation and swinging of the multiple flow guide vanes 3, the flow guide frame 2 is provided with a mounting frame 4, the flow guide vanes 3 are rotatably installed in the mounting frame 4 away from the flow equalization frame 1, the mounting frame 4 is provided with a mounting hole 5, which is beneficial to the assembly and disassembly and maintenance of the flow guide vanes 3. The driving mechanism comprises a connecting arm 10 rotatably connected at the end of the connecting rod 6, a rotating arm 11 rotatably connected at the end of the connecting arm 10 away from the connecting rod 6 and a shaft 7 fixedly connected at the end of the rotating arm 11 away from the connecting arm 10, the flow guide frame 2 is provided with a driving motor 9 for driving the shaft 7 to rotate, the shaft 7 is rotatably sleeved with a fixed arm 8, and the fixed arm 8 is fixed on the mounting frame 4. Starting the driving motor 9 drives the shaft 7 to rotate, the shaft 7 drives the rotating arm 11 to rotate, the rotating arm 11 drives the connecting arm 10 to swing, and the connecting arm 10 can drive the multiple flow guide vanes 3 to synchronously reciprocatingly swing through the connecting rod 6.

[0027] In the embodiment, a fixed block 13 is fixed on the inner wall of the flow equalization frame 1 close to the opening, a resisting screw 16 is threadedly provided on the fixed block 13, an end of the resisting screw 16 is provided with a pressing plate 15 abutting against the flow equalization plate 12, the pressing plate 15 is movably inserted and matched with the resisting screw 16, the flow equalization plate 12 is provided with a through slot 14 capable of accommodating the fixed block 13, the flow equalization plate 12 is assembled and fixed by tightening the resisting screw 16 to push the pressing plate 15 to abut against the flow equalization plate 12, and the flow equalization plate 12 can be disassembled after the pressing plate 15 is removed by loosening the resisting screw 16.

[0028] Working principle: in use, the flue gas is introduced by the guide frame body 2 through the flow distribution frame body 1 to the waste heat boiler, the driving motor 9 is started to drive the shaft rod 7 to rotate, the shaft rod 7 drives the rotating arm 11 to rotate, the rotating arm 11 drives the connecting arm 10 to swing, the connecting arm 10 drives the plurality of guide vanes 3 to swing synchronously through the connecting rod 6, the plurality of guide vanes 3 are used to uniformly guide the flue gas into the flow distribution frame body 1, and then the plurality of flow distribution plates 12 in the flow distribution frame body 1 further distribute the flue gas uniformly guided by the guide vanes 3, so that the flue gas is uniformly distributed to the waste heat boiler, the plurality of guide vanes 3 reciprocate in combination with the structure of the plurality of flow distribution plates 12, the flue gas is uniformly guided in multiple stages, the flue gas uniformly distributed at the flue inlet of the waste heat boiler is ensured, local erosion and abrasion caused by uneven flue gas flow rate are reduced, the service life of the waste heat boiler is prolonged, in addition, the plurality of guide vanes 3 reciprocate to pre-guide the flue gas, the flue gas is uniformly guided initially, the abrasion of the flow distribution plate 12 by the flue gas is reduced, and the flow distribution plate 12 is prevented from being partially blocked, and is more durable.

[0029] All the technical features in the embodiment can be freely combined according to actual needs.

[0030] Finally, it should be noted that: the above only for the preferred embodiments of the utility model, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. in the spirit and principles of the utility model, should be contained in the protection scope of the utility model.

Claims

1. A multi-stage flow-equalizing anti-abrasion device for the inlet of a waste heat boiler, comprising a flow-equalizing frame (1), characterized in that: a flow-equalizing plate (12) is arranged in the flow-equalizing frame (1), and the flow-equalizing plate (12) is provided with multiple layers; a flow-guiding frame (2) is connected to one end of the flow-equalizing frame (1), and a flow-guiding vane (3) is arranged in the flow-guiding frame (2), wherein the flow-guiding vane (3) is provided with multiple flow-guiding vanes (3), the flow-guiding vanes (3) are rotatably arranged on the side of the flow-equalizing frame (1), and a driving mechanism for driving the flow-guiding vanes (3) to swing is arranged on the flow-guiding frame (2). A connecting rod (6) is rotatably connected to both ends of the flow-guiding vanes (3) on the side of the flow-equalizing frame (1). An installation frame (4) is arranged in the flow-guiding frame (2), and the flow-guiding vanes (3) are rotatably arranged in the installation frame (4) on the side away from the flow-equalizing frame (1), and a mounting hole (5) is formed in the installation frame (4).

2. The multi-stage flow-equalizing anti-abrasion device for the inlet of a waste heat boiler according to claim 1, characterized in that, The driving mechanism comprises a connecting arm (10) rotatably connected to the end of the connecting rod (6), a rotating arm (11) rotatably connected to the end of the connecting arm (10) away from the connecting rod (6), and a shaft (7) fixedly connected to the end of the rotating arm (11) away from the connecting arm (10), and a driving motor (9) for driving the shaft (7) to rotate is arranged on the outer wall of the flow-guiding frame (2).

3. The multi-stage flow-straightening and anti-abrasion device for the inlet of a waste heat boiler according to claim 2, characterized in that, A fixed arm (8) is rotatably arranged on the shaft (7), and the fixed arm (8) is fixed to the installation frame (4).

4. The multi-stage flow-straightening and anti-abrasion device for the inlet of a waste heat boiler according to claim 3, characterized in that, A fixed block (13) is fixed to the inner wall of the flow-equalizing frame (1) near the opening, a pressing screw (16) is threadedly arranged on the fixed block (13), and a pressing plate (15) abutting against the flow-equalizing plate (12) is arranged at the end of the pressing screw (16).

5. A multi-stage flow-straightening and anti-abrasion device for the inlet of a waste heat boiler according to claim 4, characterized in that, The pressing plate (15) is movably inserted into the pressing screw (16), and a through groove (14) capable of accommodating the fixed block (13) is formed in the flow-equalizing plate (12).

6. The multi-stage flow-straightening and anti-abrasion device for the inlet of a waste heat boiler according to claim 1, characterized in that, ​ 7. A multi-stage flow-straightening and anti-abrasion device for the inlet of a waste heat boiler according to claim 6, characterized in that, ​

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