Adjustable heating furnace air duct structure

Abstract

The present application relates to an adjustable heating furnace air duct structure, and relates to the field of heating furnaces, including a main air duct, a plurality of first air ducts connected to the air outlet of the main air duct at one end, the ends of the first air ducts connected to the main air duct are arranged from one side of the air outlet of the main air duct to the other side, and a first regulating device is provided between two adjacent first air ducts, and the plurality of first regulating devices are used to control the gas flow entering each first air duct. The present application has the effect of making the gas flow entering each branch air duct more balanced.

Description

Technical Field

[0001] The present application relates to the field of heating furnaces, and in particular to an adjustable air duct structure of a heating furnace. Background Art

[0002] With the rapid development of international refining and chemical integration, China's refining and chemical integration has also made substantial progress. Due to the continuous progress of domestic chemical technology in recent years, hydrogen production furnaces and other types of heating furnaces have gradually tended to develop on a large scale. As the scale of heating furnaces increases, these larger heating furnaces also require larger air ducts. How to ensure that the gas flow entering each branch air duct is balanced and not biased is a difficult problem currently faced. Summary of the invention

[0003] In order to make the gas flow entering each branch air duct more balanced, the present application provides an adjustable heating furnace air duct structure.

[0004] The adjustable heating furnace air duct structure provided in this application adopts the following technical solution:

[0005] An adjustable heating furnace air duct structure includes a main air duct and multiple first air ducts whose one end is connected to the air outlet of the main air duct, the ends of the first air ducts connected to the main air duct are arranged from one side of the air outlet of the main air duct to the other side, and a first regulating device is provided between two adjacent first air ducts, and the multiple first regulating devices are used to control the gas flow entering each of the first air ducts.

[0006] By adopting the above technical solution, the gas flow rate from the main air duct into each first air duct can be controlled by the first regulating device, so that the gas flow rate entering each branch air duct is more balanced and not biased.

[0007] Optionally, each of the first air duct outlet ends is connected to multiple second air ducts, and the ends of the second air ducts connected to the first air duct are arranged from one side of the air outlet of the first air duct to the other side, and a second regulating device is provided between two adjacent second air ducts, and the second regulating device is used to control the gas flow entering each adjacent second air duct.

[0008] By adopting the above technical solution, when more branches need to be divided, multiple second air ducts can be divided out on the basis of the first air duct, and the gas flow entering each second air duct can be adjusted by the second adjusting device, so that more branches are divided out and the gas flow in each branch is evenly distributed.

[0009] Optionally, a flow meter for detecting the gas flow in each second air duct is installed in each second air duct.

[0010] By adopting the above technical solution, the flow rate in each second air duct can be detected in real time through the flow meter, so as to achieve accurate control of the flow rate in the second air duct.

[0011] Optionally, a second partition plate is provided between two adjacent second air ducts, and the second adjustment device includes a wing plate provided between the two adjacent second air ducts, one end of the wing plate is hinged to one end of the second partition plate facing the first air duct, and the other end of the wing plate is provided with an adjustment component for adjusting the angle of the wing plate relative to the second partition plate.

[0012] By adopting the above technical solution, the angle between the wing plate and the second partition plate can be adjusted through the adjustment component, thereby changing the size of the air inlet of the second air duct and achieving the purpose of adjusting the gas flow in the second air duct.

[0013] Optionally, the adjustment assembly includes a control rod hinged on one side of the wing plate and a driving member that drives the control rod to move along its axial direction, and the control rod slidingly cooperates with the side wall of the main air duct to drive the wing plate to rotate around the hinge axis with the second partition plate.

[0014] By adopting the above technical solution, the control plate can be driven to move along its axial direction through the driving member, thereby driving the wing plate to rotate around the hinge axis with the second partition plate, so that the angle between the wing plate and the second partition plate changes, thereby realizing the adjustment of the gas flow in the second air duct.

[0015] Optionally, a protective cover is fixedly connected to the wing plate, and the protective cover is wrapped around an end of the wing plate away from the second partition plate.

[0016] By adopting the above technical solution, because the end of the wing plate away from the second partition plate directly faces the air inlet of the second air duct, the setting of the protective cover can protect the end of the wing plate away from the second partition plate, thereby reducing the breakage of the wing plate caused by wind.

[0017] Optionally, a side of the protective cover facing the first air duct is a windward side, and a bend of the windward side is an arc transition.

[0018] By adopting the above technical solution, the impact of wind on the protective cover can be reduced. When the wind reaches the protective cover, it can enter the second air duct along the curvature of the protective cover, and the flow is smoother.

[0019] Optionally, a reinforcing rod is fixedly connected between a surface of the protective cover facing the wing plate and the wing plate.

[0020] By adopting the above technical solution, the reinforcing rod can increase the connection strength between the protective cover and the wing panel.

[0021] Optionally, the driving member includes a handle rotatably connected to the side wall of the first air duct, and the handle is sleeved on the control rod and threadedly connected to the control rod.

[0022] By adopting the above technical solution, by screwing the handle, the handle will drive the control rod threadedly connected thereto to move along its axial direction, and then drive the wing plate to rotate around the hinge axis with the second partition plate through the control rod.

[0023] Optionally, the driving member includes an automatic linear driving member fixedly connected to the side wall of the first air duct, one end of the automatic linear driving member is fixedly connected to an end of the control rod away from the wing plate, and the automatic linear driving member is configured to start when the flow in the flow meter is lower than or higher than a set range value.

[0024] By adopting the above technical solution, when the flow meter detects that the gas flow in the second air duct is higher or lower than the set range value, the automatic linear drive can automatically drive the control rod to extend or retract, thereby driving the wing plate to rotate around the hinge axis with the second partition plate. In addition, there is no need for workers to manually tighten, which makes the operation more convenient and labor-saving.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. The arrangement of the first regulating device and the second regulating device can realize the regulation of the gas flow of two adjacent first air ducts and two adjacent second air ducts, so that the gas flow entering each second air duct is more balanced and not biased;

[0027] 2. The setting of the protective cover can protect the end of the wing plate facing the wind inlet, reducing the damage to the wing plate caused by the impact of wind;

[0028] 3. The electric push rod is configured to start when the value detected by the flow meter is higher or lower than the set range value, which can realize automatic control and adjustment of the gas flow in each second air duct, while ensuring the balance of gas flow in each second air duct and reducing the workload of the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the overall structure of this application.

[0030] Figure 2 Yes Figure 1 A magnified schematic diagram of center A.

[0031] Figure 3 This is a schematic diagram to reflect the structure of the second adjustment device.

[0032] Figure 4 yes Figure 3 Schematic diagram of the AA direction.

[0033] Explanation of the reference numerals: 1. main air duct; 2. first air duct; 21. first partition plate; 3. second air duct; 31. second partition plate; 4. first adjusting device; 5. second adjusting device; 51. wing plate; 52. adjusting assembly; 521. control lever; 522. driving member; 523. rotating rod; 53. fixing clamp; 531. retaining ring; 54. protective cover; 55. reinforcing rod. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] The present application embodiment discloses an adjustable heating furnace air duct structure. Figure 1 The air duct structure of the heating furnace includes a main air duct 1, a plurality of first air ducts 2 connected at the air outlet of the main air duct 1, and a plurality of second air ducts 3 connected at the air outlet of each first air duct 2, wherein the ends of the plurality of first air ducts 2 connected to the main air duct 1 are arranged from one side of the air outlet of the main air duct 1 to the other side, and the ends of the plurality of second air ducts 3 connected to the first air duct 2 are arranged from one side of the air outlet of the first air duct 2 to the other side.

[0036] A first partition plate 21 is provided between two adjacent first air ducts 2, and the first partition plate 21 is located at the connection between the main air duct 1 and the first air duct 2. A first regulating device 4 is provided on each first partition plate 21, and the first regulating device 4 is located between each first partition plate 21 and the side wall of the main air duct 1 and is used to regulate the gas flow entering each first air duct 2. A second partition plate 31 is provided between two adjacent second air ducts 3, and the second partition plate 31 is located at the connection between the first air duct 2 and the second air duct 3. A second regulating device 5 is provided on each second partition plate 31, and the second regulating device 5 is located between each second partition plate 31 and the side wall of the first air duct 2 and is used to regulate the gas flow entering each second air duct 3. The gas flow entering each first air duct 2 from the main air duct 1 can be regulated by the first regulating device 4, and the gas flow entering each second air duct 3 connected thereto from each first air duct 2 can be regulated by the second regulating device 5, so that the gas flow entering each second air duct 3 is more balanced.

[0037] At the same time, in order to facilitate the monitoring of the gas flow in each second air duct 3, a flow meter (not shown in the figure) is installed in each second air duct 3. The flow meter can be used to detect the gas flow in each second air duct 3 in real time, so that the staff can adjust the gas flow in the second air duct 3 in time.

[0038] Reference Figure 1 and Figure 2In order to avoid interference between the multiple first regulating devices 4 arranged on the side wall of the main air duct 1 and the multiple second regulating devices 5 arranged on the first air duct 2, the multiple first air ducts 2 are gradually separated from the two sides of the main air duct 1 or from one side of the main air duct 1 along the length direction of the main air duct 1. In this application, the two sides of the main air duct 1 are sequentially separated to form five first air ducts 2 as an example for explanation. Each first air duct 2 is gradually separated from one side of the first air duct 2 or from both sides of the first air duct 2 along its length direction to form multiple second air ducts 3. In this application, five first air ducts 2 are gradually separated to form three second air ducts 3 or four second air ducts 3 as an example for explanation. Among them, there are four first regulating devices 4, and the four first regulating devices 4 are respectively located between two adjacent first air ducts 2. The ratio of the gas flow entering the five first air ducts 2 can be adjusted by the four first regulating devices 4. The setting method of the second regulating device 5 refers to the setting method of the aforementioned first regulating device 4. The second regulating devices 5 are respectively arranged between two adjacent second air ducts 3. By adjusting the second regulating devices 5 in sequence, the gas flow in each second air duct 3 can be adjusted, and the remaining gas flow will enter the last second air duct 3.

[0039] In order to make the air volume entering each second air duct 3 balanced and not biased, when it is necessary to adjust the output flow of all second air ducts 3 to be equal. When the flow of the main air duct 1 remains basically unchanged, the output flow of the second air duct 3 can be controlled by adjusting the first regulating device 4 and the second regulating device 5. Since the second air duct 3 is divided by the first air duct 2, the more the number of second air ducts 3 divided by the first air duct 2, the greater the proportion of gas flow that needs to be allocated to the first air duct 2, and the gas flow of each first air duct 2 can be collected by the flow meter in all the second air ducts 3 divided by it. When in use, first adjust the gas flow ratio of all first air ducts 2 to the ratio of the number of second air ducts 3 divided by it, and then adjust the gas flow in the second air duct 3 divided by each first air duct 2 through the corresponding second regulating device 5, so that the flow in the second air duct 3 divided by each first air duct 2 is equal, so that the flow in all second air ducts 3 is equal. In the present application, the first adjusting device 4 and the second adjusting device 5 have the same structure, and the difference only lies in the size and the installation position. Therefore, the second adjusting device 5 is taken as an example for explanation in the present application.

[0040] It is understandable that in actual use, the staff can select the number of levels according to the size of the gas flow, that is, only one level can be used to divide multiple first air ducts 2 through the main pipeline 1; or multiple levels can be used, that is, the third air duct, the fourth air duct, etc. are divided in sequence on the basis of the second air duct 2. In order to meet the installation requirements of air ducts with different flow sizes.

[0041] Reference Figure 2 and Figure 3The second regulating device 5 comprises a wing plate 51 hinged on the end of the second partition plate 31 facing the first air duct 2, and the end of the wing plate 51 away from the second partition plate is suspended. An regulating component 52 for regulating the angle between the wing plate 51 and the second partition plate 31 is arranged between one side of the wing plate 51 and the side wall of the first air duct 2, and the regulating component 52 is connected to the suspended end of the wing plate 51 to support the suspended end of the wing plate 51. By adjusting the angle between the wing plate 51 and the second partition plate 31, the size of the air inlet of the second air duct 3 can be changed, thereby realizing the control of the gas flow in the second air duct 3.

[0042] Reference Figure 3 The adjustment assembly 52 includes a control rod 521 hinged on the wing plate 51 and a driving member 522 driving the control rod 521 to move along its axial direction.

[0043] Specifically, two fixing clamps 53 are fixedly connected to the side of the wing plate 51 facing the control rod 521. The fixing clamps 53 are in a semi-hoop shape as a whole, including a semicircular clamping ring 531 and mounting ears fixedly connected to both sides of the clamping ring 531. A rotating rod 523 is vertically fixedly connected to the end of the control rod 521 facing the wing plate 51. The two ends of the rotating rod 523 are respectively located in the clamping rings 531 of the two fixing clamps 53. The two fixing clamps 53 are fixedly connected to the wing plate 51 by bolts. The control rod 521 and the wing plate 51 can be hinged by the cooperation of the rotating rod 523 and the clamping ring 531. When the driving member 522 drives the control rod 521 to move along its axial direction, the wing plate 51 will be driven to rotate around the hinge axis with the second partition plate 31 through the suspended end of the wing plate 51, thereby adjusting the size of the air inlet of the second air duct 3 and changing the gas flow in the second air duct 3. At the same time, since the control rod 521 is fixedly connected to the side wall of the rotating rod 523 when the rotating rod 523 rotates, the control rod 521 also undergoes a certain positional shift as the rotating rod 523 rotates. Therefore, when the control rod 521 slides along its axial direction, it can drive the wing plate 51 to rotate in an arc shape around the hinge axis with the second partition plate. When the control rod 521 is located on both sides opposite to the rotating rod 523, there is a certain offset margin, which will not cause the control rod 521 and the wing plate 51 to be stuck.

[0044] Reference Figure 3 and Figure 4In order to make the control rod 521 and the wing plate 51 support more firmly, a plurality of control rods 521 can be provided. In this application, three control rods 521 are used as an example for explanation. The three control rods 521 are arranged at equal intervals along the length direction of the hinge axis between the wing plate 51 and the second partition plate 31. The three control rods 521 can support the suspended end of the wing plate 51 in multiple places, so that the support of the wing plate 51 is more stable. Of course, the number of driving members 522 can also be set to three. The three driving members 522 correspond to the three control rods 521 one by one. The three driving members 522 can drive the three control rods 521 to move.

[0045] In one example of the present application, the driving member 522 includes a handle rotatably connected to the outer wall of the first air duct 2, one end of the control rod 521 away from the wing plate 51 penetrates the side wall of the first air duct 2 and is exposed to the outside, and the handle is sleeved on the control rod 521 and threadedly connected to the control rod 521. When it is necessary to adjust the angle between the wing plate 51 and the second partition plate 31 to adjust the gas flow in the second air duct 3, the handle can be directly screwed from the outside. Since the handle is rotatably connected to the first air duct 2 and threadedly connected to the control rod 521, it will drive the control rod 521 to move along its axial direction, thereby adjusting the gas flow in the second air duct 3.

[0046] In another example of the present application, the driving member 522 includes an automatic linear driving member. Specifically, the automatic linear driving member can be an electric push rod, which is fixed to the side wall of the first air duct 2. The push rod of the electric push rod is fixed to the end of the control rod 521 away from the wing plate 51. When the gas flow in the second air duct 3 needs to be adjusted, the push rod of the electric push rod is directly controlled to extend or retract, and the wing plate 51 can be driven to rotate around the hinge axis with the second partition plate 31 through the control rod 521 to adjust the gas flow in the second air duct 3. Of course, the automatic linear driving member can also be a pneumatic push rod, a cylinder, a linear motor or other components that can automatically realize linear motion. The installation method can refer to the installation method of the electric push rod, as long as it can realize the automatic pushing of the control rod 521 to move along its axis.

[0047] At the same time, in order to realize the automatic adjustment of the gas flow in the second air duct 3, the automatic linear drive is configured to start when the flow meter detects that the gas flow in the second air duct 3 is higher or lower than the set range value. Specifically, the drive 522 also includes a controller, which is respectively connected to each flow meter and each automatic linear drive. The controller can specifically use a PLC controller, which can control the extension and contraction amount of the automatic linear drive according to the flow collected by the flow meter, that is, adjust the flow size in the second air duct 3 according to the flow value collected in the second air duct 3. The control principle of the controller can be roughly referred to the above-mentioned manual control principle. The controller will first determine the flow of the main air duct 1 according to the flow collected by all flow meters, and then determine the target flow of each second air duct 3 according to the number of flow meters, that is, the number of second air ducts 3. Regardless of whether the flow of the main air duct 1 changes, it can be determined that the flow of the main air duct 1 is constant at a certain moment. On the basis of determining that the flow of the main air duct 1 is constant, the flow of the second air duct 3 can be adjusted according to the target value of the flow in the second air duct 3 according to the aforementioned manual control logic, so that the flow of each second air duct 3 is equal. The controller can realize automatic adjustment of the gas flow in the second air duct without the need for real-time monitoring by staff, making it more convenient and flexible to use.

[0048] Reference Figure 3 In order to prevent the end of the wing plate 51 away from the second partition plate 31 from being broken by the impact of the wind flowing from the first air duct 2 to the second air duct 3, a protective cover 54 is wrapped around the end of the wing plate 51 away from the second air duct 31, and the protective cover 54 can protect the wing plate 51. The side of the protective cover 54 facing the first air duct 2 is the windward side, and the windward side is an arc transition at the bend of the end of the wing plate 51, which can reduce the resistance of the protective cover 54 to the wind. When the wind enters the second air duct 3 from the first air duct 2 along the wing plate 51, it will first contact the protective cover 54 and enter the second air duct 3 along the arc surface of the protective cover 54.

[0049] At the same time, a gap is left at the connection between the protective cover 54 and the wing plate 51, which can play a buffering role for the protective cover 54. A reinforcing rod 55 is fixed in the gap at the connection between the protective cover 54 and the wing plate 51, and the reinforcing rod 55 can increase the connection strength between the protective cover 54 and the wing plate 51, so that the protective cover 54 is installed more firmly and stably.

[0050] The implementation principle of an adjustable heating furnace air duct structure in an embodiment of the present application is as follows: when in use, the wind in the main air duct 1 directly enters into multiple first air ducts 2, the wind in each first air duct 2 can reach the second air duct 3 along the wing plate 51, and the total gas flow in the main air duct 1 can be obtained by measuring the gas flow in each second air duct 3 with a flow meter, and the gas flow ratio in the first air duct 2 is adjusted by the first adjusting device 4, and then the gas flow ratio in the second air duct 3 is adjusted by the second adjusting device 5, to ensure that the gas flow entering each second air duct 3 is balanced and not biased.

[0051] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An adjustable heating furnace air duct structure, characterized in that: The invention comprises a main air duct (1), a plurality of first air ducts (2) one end of which is connected to an air outlet of the main air duct (1), the ends of the first air duct (2) connected to the main air duct (1) are arranged from one side of the air outlet of the main air duct (1) to the other side, a first regulating device (4) is provided between two adjacent first air ducts (2), and the plurality of first regulating devices (4) are used to control the gas flow entering each of the first air ducts (2); the air outlet end of each first air duct (2) is connected to a plurality of second air ducts (3), and the second air ducts (3) are connected to the first air duct (2) The connected ends are arranged from one side of the air outlet of the first air duct (2) to the other side, a second regulating device (5) is arranged between two adjacent second air ducts (3), and the second regulating device (5) is used to control the gas flow entering each adjacent second air duct (3); each second air duct (3) is installed with a flow meter for detecting the gas flow in each second air duct (3); a second partition plate (31) is arranged between two adjacent second air ducts (3), and the second regulating device (5) includes a wing arranged between the two adjacent second air ducts (3); The wing plate (51) has one end hingedly connected to one end of the second partition plate (31) facing the first air duct (2), and the other end of the wing plate (51) is provided with an adjustment component (52) for adjusting the angle between the wing plate (51) and the second partition plate (31); the adjustment component (52) comprises a control rod (521) hingedly connected to one side of the wing plate (51) and a driving member (522) for driving the control rod (521) to move along its axial direction, and the control rod (521) is slidably matched with the side wall of the main air duct (1) to drive the wing plate (51) to move along its axial direction. The plate (51) rotates around the hinge axis with the second partition plate (31); a protective cover (54) is fixedly connected to the wing plate (51), and the protective cover (54) wraps around the end of the wing plate (51) away from the second partition plate (31); the driving member (522) includes an automatic linear driving member fixedly connected to the side wall of the first air duct (2), one end of the automatic linear driving member is fixedly connected to the end of the control rod (521) away from the wing plate (51), and the automatic linear driving member is configured to start when the flow in the flow meter is lower than or higher than a set range value.

2. The adjustable heating furnace air duct structure according to claim 1, characterized in that: The side of the protective cover (54) facing the first air duct (2) is a windward surface, and the bend of the windward surface is an arc transition.

3. The adjustable heating furnace air duct structure according to claim 1, characterized in that: A reinforcing rod (55) is fixedly connected between a surface of the protective cover (54) facing the wing plate (51) and the wing plate (51).

4. The adjustable heating furnace air duct structure according to claim 1, characterized in that: The driving member (522) comprises a handle rotatably connected to the side wall of the first air duct (2); the handle is sleeved on the control rod (521) and is threadedly connected to the control rod (521).

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