Zero calibration positioning device for boiler flue baffle

Abstract

The utility model discloses a kind of boiler smoke air flue baffle zero calibration positioning device, a kind of boiler smoke air flue baffle zero calibration positioning device, including calibration plate, the top of calibration plate is fixedly installed with multiple mounting frames, multiple The mounting frame is provided with mounting assembly for the fixed connection of calibration plate and air flue, the bottom of calibration plate is provided with multiple grooves. When the multiple baffle inside air flue needs to be calibrated, calibration plate can be installed in air flue, the groove below calibration plate is connected with multiple hinged shafts, so that calibration plate is in parallel state, then by adjusting the position of multiple baffle, so that multiple baffle and magnetic attraction plate are mutually magnetically attracted, so that multiple baffle and calibration plate are parallel, can effectively ensure that the zero of baffle before and after maintenance remains consistent, then mounting connection is carried out to the hinged shaft and adjusting mechanism on both sides of baffle, then the device is removed, the zero calibration of multiple baffle can be realized.

Description

Technical Field

[0001] This utility model relates to the field of zero-position calibration technology for air duct dampers, and in particular to a zero-position calibration and positioning device for boiler flue gas duct dampers. Background Technology

[0002] As a key component of the boiler system, the boiler flue gas duct plays a crucial role in guiding the efficient flow of flue gas and air. Its design directly impacts the boiler's thermal efficiency and operational stability. This structure typically consists of a cold air duct, a hot air duct, a flue, and a mixing section. By precisely controlling the airflow velocity, temperature, and pressure distribution, it ensures complete fuel combustion and orderly exhaust gas emission. Furthermore, auxiliary devices such as guide vanes and expansion joints are required inside the flue gas duct to reduce airflow resistance, compensate for thermal expansion, and prevent vibration, ensuring the long-term safe operation of the system.

[0003] The zero and full-scale positions of the boiler's primary air damper represent the closed and fully open states, respectively. At zero, the damper is almost completely closed, preventing or reducing gas inflow; at full scale, the damper is fully open, allowing maximum gas flow. The main difference lies in their control over the boiler's air intake, directly affecting combustion efficiency and operational stability. Zero-point calibration refers to the initial position calibration of adjustable dampers in the air duct system after maintenance. Specifically, when the damper is fully closed, it must be confirmed mechanically or electronically that it is actually in a fully closed state, and this position is set as the zero-point reference point in the control system. This process ensures that the damper opening signal strictly corresponds to the actual physical position, avoiding zero-point drift caused by installation errors or long-term operation, thereby guaranteeing the accuracy of airflow regulation and the stability of system operation.

[0004] In existing technologies, zero-position calibration of duct dampers generally relies on manual operation, which has significant drawbacks: Firstly, manual calibration depends on experience and simple tools, such as rulers and angle meters, which are easily affected by visual errors, differences in measurement methods, and environmental interference, resulting in large deviations in zero-position setting, and the accuracy can usually only meet basic operating requirements; secondly, manual calibration lacks standardized procedures, the results of different operators are inconsistent, and the calibration quality cannot be fed back in real time. In long-term operation, zero-position deviation can easily lead to problems such as inaccurate airflow control, increased equipment energy consumption, or decreased system stability. Utility Model Content

[0005] Purpose of the utility model: The purpose of this utility model is to provide a zero-position calibration and positioning device for boiler flue gas duct damper to solve the above-mentioned shortcomings in the prior art.

[0006] Technical solution: A zero-position calibration and positioning device for a boiler flue gas duct damper includes a calibration plate. Multiple mounting brackets are fixedly installed on the top of the calibration plate. Mounting components are provided on the mounting brackets for fixing the calibration plate to the duct. Multiple grooves are provided at the bottom of the calibration plate. The multiple grooves overlap the hinge shaft on the inner baffle of the duct. Multiple magnetic plates are also fixedly installed at the bottom of the calibration plate.

[0007] As a further description of the above technical solution: the number of the plurality of grooves is one-to-one with the number of hinge shafts on the air duct baffle.

[0008] As a further description of the above technical solution: four magnetic plates are arranged as a group, and the number of groups of magnetic plates corresponds to the number of baffles. Each group of magnetic plates is arranged in pairs on both sides of the groove.

[0009] As a further description of the above technical solution: the mounting assembly includes screws installed at the bottom of multiple mounting brackets, each mounting bracket having two screws installed at its bottom, and the ends of the multiple screws being inserted into mounting holes at the edge of the air duct and locked with nuts.

[0010] As a further description of the above technical solution: the calibration plate is provided with multiple inspection slots, and multiple slidingly mounted inspection plates are arranged inside the multiple inspection slots.

[0011] As a further description of the above technical solution: the inspection plate is provided with overlapping plates at both ends, the inspection groove is provided with overlapping grooves at both ends, and the overlapping plates are disposed above the overlapping grooves.

[0012] As a further description of the above technical solution: two inspection slots form a group, and the number of groups of inspection slots corresponds one-to-one with the number of baffles. The two inspection slots in each group are respectively opened on both sides of the baffle hinge shaft.

[0013] As a further description of the above technical solution: two anti-detachment plates are fixedly installed at the top of each inspection slot, and the anti-detachment plates are fixedly connected to the calibration plate.

[0014] Beneficial effects: When multiple baffles inside the air duct need to be calibrated, the calibration plate can be installed inside the air duct. The groove under the calibration plate is connected to multiple hinge shafts, so that the calibration plate is in a parallel state. Then, by adjusting the position of multiple baffles, multiple baffles and magnetic plates are magnetically attracted to each other, so that multiple baffles are parallel to the calibration plate. This can effectively ensure that the zero position of the baffles is consistent before and after maintenance. Then, the hinge shafts on both sides of the baffles are installed and connected to the adjustment mechanism, and then the device is removed to achieve zero-position calibration of multiple baffles. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the overall three-dimensional structure of a boiler flue gas duct damper zero-position calibration and positioning device installed on the duct and the duct damper according to the present invention.

[0016] Figure 2 This is a three-dimensional structural diagram of the air duct and air duct baffle of this utility model;

[0017] Figure 3 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 4 This is a three-dimensional structural schematic diagram of the present invention from another perspective;

[0019] Figure 5 This is a side sectional view of the present invention.

[0020] Figure 6 This utility model Figure 1 Front view sectional structural diagram;

[0021] Figure 7 This is a three-dimensional exploded structural diagram of the present invention.

[0022] Legend:

[0023] 1. Air duct; 101. Mounting hole; 102. Baffle; 103. Hinge shaft; 2. Calibration plate; 3. Mounting bracket; 4. Screw; 5. Inspection plate; 501. Overlap plate; 6. Anti-detachment plate; 7. Nut; 8. Groove; 9. Magnetic plate; 10. Inspection slot; 11. Overlap slot. Detailed Implementation

[0024] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Reference Figure 1-7A zero-position calibration and positioning device for boiler flue gas duct dampers includes a calibration plate 2. Multiple mounting brackets 3 are fixedly installed on the top of the calibration plate 2, and mounting components are provided on the mounting brackets 3 for fixing the calibration plate 2 to the duct 1. Multiple grooves 8 are formed at the bottom of the calibration plate 2, and these grooves 8 overlap the hinge shaft 103 on the internal damper 102 of the duct 1. Multiple magnetic plates 9 are also fixedly installed at the bottom of the calibration plate 2. When it is necessary to calibrate the multiple dampers 102 inside the duct 1, the device can be... The calibration plate 2 is installed inside the air duct 1. The groove 8 below the calibration plate 2 is connected to multiple hinge shafts 103, so that the calibration plate 2 is in a parallel state. Then, by adjusting the position of multiple baffles 102, the multiple baffles 102 and the magnetic plate 9 are magnetically attracted to each other, so that the multiple baffles 102 are parallel to the calibration plate 2, which can effectively ensure that the zero position of the baffles 102 is consistent before and after maintenance. Then, the hinge shafts 103 on both sides of the baffles 102 are connected to the adjustment mechanism, and then the device is removed, so that the zero position calibration of multiple baffles 102 can be achieved.

[0026] As a preferred technical solution in this embodiment, the number of the plurality of grooves 8 corresponds one-to-one with the number of hinge shafts 103 on the baffle 102 of the air duct 1; the grooves 8 can be precisely engaged with the hinge shafts 103 inside the air duct 1, thereby achieving the initial fixation of the calibration plate 2.

[0027] As a preferred technical solution of this embodiment, the four magnetic plates 9 are grouped together, and the number of groups of magnetic plates 9 corresponds to the number of baffles 102. Each group of magnetic plates 9 is arranged in pairs on both sides of the groove 8. Each baffle 102 has a corresponding magnetic plate 9, and the magnetic plates 9 are symmetrically arranged on both sides above each baffle 102, thereby achieving adsorption of the baffle 102 and enabling the baffle 102 to return to the zero-position horizontal state.

[0028] As a preferred technical solution of this embodiment, the mounting assembly includes screws 4 installed at the bottom of multiple mounting brackets 3. Each mounting bracket 3 has two screws 4 installed at its bottom. The ends of the multiple screws 4 are respectively inserted into the mounting holes 101 on the edge of the air duct 1 and locked with nuts 7. The screws 4 and nuts 7 can lock the mounting bracket 3 to the air duct 1, thereby realizing the installation of the calibration plate 2.

[0029] As a preferred technical solution of this embodiment, the calibration plate 2 is provided with a plurality of inspection slots 10, and a plurality of slidingly installed inspection plates 5 are arranged inside the plurality of inspection slots 10; when each baffle 102 is adjusted to the zero position, the inspection plate 5 inside the inspection slot 10 can be pushed upward so that the top of the inspection plate 5 is flush with the top of the inspection slot 10, thereby achieving a tight fit between the baffle 102 and the calibration plate 2, thus indicating that the baffle 102 has completed the zero position calibration.

[0030] As a preferred technical solution of this embodiment, the two ends of the inspection plate 5 are provided with overlapping plates 501, the two ends of the inspection groove 10 are provided with overlapping grooves 11, and the overlapping plates 501 are disposed above the overlapping grooves 11; when the calibration plate 2 is not calibrated, the bottom of the inspection plate 5 is located outside the inspection groove 10, and the overlapping plates 501 overlap the overlapping grooves 11.

[0031] As a preferred technical solution of this embodiment, the two inspection slots 10 are grouped together, and the number of groups of inspection slots 10 corresponds one-to-one with the number of baffles 102. The two inspection slots 10 in each group are respectively opened on both sides of the hinge shaft 103 of the baffle 102. Each baffle 102 is provided with inspection slots 10 on both sides of the hinge shaft 103. When the inspection plates 5 inside the inspection slots 10 on both sides are pushed out by the lower baffle 102 and are flush with the inspection slots 10, it indicates that the baffle 102 has returned to the zero position.

[0032] As a preferred technical solution in this embodiment, two anti-detachment plates 6 are fixedly installed at the top of each inspection slot 10. The anti-detachment plates 6 are fixedly connected to the calibration plate 2. The anti-detachment plates 6 can limit the inspection plate 5 and prevent the inspection plate 5 from falling out of the inspection slot 10.

[0033] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A zero-position calibration and positioning device for a boiler flue gas duct damper, comprising a calibration plate (2), wherein a plurality of mounting brackets (3) are fixedly installed on the top of the calibration plate (2), characterized in that, Multiple mounting brackets (3) are provided with mounting components for fixing the calibration plate (2) to the air duct (1). Multiple grooves (8) are provided at the bottom end of the calibration plate (2). The multiple grooves (8) overlap the hinge shaft (103) on the baffle (102) inside the air duct (1). Multiple magnetic plates (9) are also fixedly installed at the bottom end of the calibration plate (2).

2. The boiler flue gas duct damper zero-position calibration and positioning device according to claim 1, characterized in that, The number of the multiple grooves (8) corresponds one-to-one with the number of hinge shafts (103) on the baffle (102) of the air duct (1).

3. The boiler flue gas duct damper zero-position calibration and positioning device according to claim 1, characterized in that, The four magnetic plates (9) are arranged as a group, and the number of groups of magnetic plates (9) corresponds to the number of baffles (102). Each group of magnetic plates (9) is arranged in pairs on both sides of the groove (8).

4. The boiler flue gas duct damper zero-position calibration and positioning device according to claim 1, characterized in that, The mounting assembly includes screws (4) installed at the bottom of multiple mounting brackets (3), each mounting bracket (3) having two screws (4) installed at its bottom, and the ends of the multiple screws (4) being inserted into mounting holes (101) at the edge of the air duct (1) and locked with nuts (7).

5. The boiler flue gas duct damper zero-position calibration and positioning device according to claim 1, characterized in that, The calibration plate (2) has multiple inspection slots (10), and multiple sliding inspection plates (5) are arranged inside the multiple inspection slots (10).

6. The boiler flue gas duct damper zero-position calibration and positioning device according to claim 5, characterized in that, The inspection plate (5) has overlapping plates (501) at both ends, and the inspection groove (10) has overlapping grooves (11) at both ends. The overlapping plates (501) are positioned above the overlapping grooves (11).

7. A boiler flue gas duct damper zero-position calibration and positioning device according to claim 5, characterized in that, Two inspection slots (10) are set as a group, and the number of groups of inspection slots (10) corresponds one-to-one with the number of baffles (102). The two inspection slots (10) in each group are respectively opened on both sides of the hinge shaft (103) of the baffle (102).

8. A boiler flue gas duct damper zero-position calibration and positioning device according to claim 5, characterized in that, Two anti-detachment plates (6) are fixedly installed at the top of each inspection slot (10), and the anti-detachment plates (6) are fixedly connected to the calibration plate (2).

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