Measuring device for heat flux density of boiler heating surface

Abstract

The utility model relates to the technical field of boilers, in particular to a device for measuring the heat flux density of a boiler heating surface, which comprises a hot-end thermocouple and a cold-end thermocouple, water-cooled wall tubes are arranged on the left and right sides above the hot-end thermocouple and the cold-end thermocouple, fins are connected between adjacent water-cooled wall tubes and at the outer ends of the water-cooled wall tubes, and the fins are connected with the hot-end thermocouple and the cold-end thermocouple. The upper end of the hot-end thermocouple is inserted into the middle fin, the cold-end thermocouple is connected with the water-cooled wall tube, the hot-end thermocouple is connected with the middle fin, a connecting frame is connected between the fins at the left end and the right end, a moving block is arranged on the right side of the connecting frame, and a first adjusting assembly is arranged between the moving block and the connecting frame. Second adjusting assemblies are arranged between the hot-end thermocouple and the connecting frame and between the cold-end thermocouple and the moving block, each first adjusting assembly comprises a right sliding block and a left sliding block, and a sliding groove is formed in the connecting frame; according to the utility model, the hot-end thermocouple and the cold-end thermocouple can be conveniently adjusted, and the device can effectively adapt to water-cooled wall tubes with different sizes.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology and discloses a device for measuring the heat flux density of a boiler heating surface. Background Technology

[0002] The water-cooled walls inside the boiler are the main heat-receiving components. They are usually installed around the boiler furnace and serve as the primary heating surface. Currently, the heat flux density of the boiler heating surface is typically measured using a heat flux meter. This meter requires a hot-end thermocouple for measuring heat flux and a cold-end thermocouple with a constant temperature. To reduce the number of cooling devices, a back-fire side differential heat flux meter is usually used. Since the water-cooled wall is divided into a fire-facing side and a back-fire side, with the back-fire side having a lower temperature, two thermocouples are usually installed at the hot and cold ends of the back-fire side of the water-cooled wall to obtain the heat flux density of the water-cooled wall through temperature difference. However, the installation distance between the hot-end and cold-end thermocouples on existing boiler heating surface heat flux density measuring devices is usually fixed. When installed inside different boilers, the hot-end and cold-end thermocouples are difficult to adapt to water-cooled wall tubes of different sizes because the dimensions of the boiler fins and water-cooled wall tubes are usually different. Utility Model Content

[0003] The purpose of this invention is to address the aforementioned problems and shortcomings by providing a device for measuring the heat flux density of a boiler heating surface, which facilitates the adjustment of the hot-end thermocouple and the cold-end thermocouple, and effectively adapts to water-cooled wall tubes of different sizes.

[0004] A device for measuring the heat flux density of a boiler heating surface, comprising a hot-junction thermocouple and a cold-junction thermocouple;

[0005] Water-cooled wall tubes are provided on the left and right sides above the hot-end thermocouple and the cold-end thermocouple. Fins are connected between adjacent water-cooled wall tubes and at the outer end of the water-cooled wall tubes. The upper end of the hot-end thermocouple is inserted into the middle fin. The cold-end thermocouple is connected to the water-cooled wall tube. The hot-end thermocouple is connected to the middle fin. A connecting frame is connected between the fins at the left and right ends. A movable block is provided on the right side of the connecting frame. An adjustment component is provided between the movable block and the connecting frame.

[0006] Adjustment components are provided between the hot-end thermocouple and the connecting frame, and between the cold-end thermocouple and the moving block.

[0007] Furthermore, the adjustment component includes a right slider and a left slider, the connecting frame has a groove, the moving block is Z-shaped, and the moving block is slidably connected to the groove.

[0008] Furthermore, a second limiting groove is formed on the upper right end of the inner wall of the slide, and a first limiting groove is formed on the upper left end of the inner side of the slide.

[0009] Furthermore, the right slider is connected to the right end of the moving block, and the left slider is connected to the left end of the moving block.

[0010] Furthermore, both the right and left sliders have trapezoidal cross-sections. The left and right sliders are slidably connected in limiting groove one and limiting groove two, respectively. An adjusting bolt is threadedly connected to the right side of the connecting frame. The left end of the adjusting bolt is inserted into the sliding groove and rotatably connected to the upper right side of the moving block.

[0011] Furthermore, the second adjustment component includes a mounting block, a connecting plate, and two adjusting bolts. The moving block and the connecting frame both have moving grooves. The mounting block is slidably connected to the interior of the adjacent moving grooves. The hot-end thermocouple and the cold-end thermocouple are respectively mounted on the left and right mounting blocks.

[0012] Furthermore, the connecting plate is connected to the underside of the mounting block, and the two adjusting bolts are threaded onto the connecting plate. The two adjusting bolts on the left and right sides are respectively threaded onto the connecting frame and the moving block.

[0013] The beneficial effects of this utility model are:

[0014] When using the boiler heating surface heat flux density measuring device, first weld the connecting frame between the left and right fins. The connecting frame is welded to the backfire side inside the boiler. Turn the adjusting bolt one to the right, and the moving block will move to the right with the adjusting bolt one. The left and right sliders can then slide inside the limiting groove one and limiting groove two, respectively. The left and right sliders effectively limit the upper and lower ends of the moving block to prevent it from falling. Adjusting the position of the moving block can adjust the horizontal position of the cold junction thermocouple. By adjusting the cold junction thermocouple through the above fine-tuning measures, it can adapt to water-cooled wall tubes of different sizes.

[0015] After moving the cold-end thermocouple to the desired installation position, rotate the second adjusting bolt. The connecting plate will then move up and down with the second adjusting bolt, and the mounting block will also move up and down with the connecting plate. The hot-end and cold-end thermocouples installed inside the mounting block will then move up and down with the mounting block. After the hot-end thermocouple is inserted into the fin in the middle and the cold-end thermocouple contacts the water-cooled wall tube, the hot-end and cold-end thermocouples are connected to the fin and water-cooled wall tube respectively by spot welding. By adjusting the cold-end and hot-end thermocouples through the above-mentioned fine-tuning measures, water-cooled wall tubes of different sizes can be accommodated. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0017] Figure 2 This utility model Figure 1A partial enlarged structural diagram of A;

[0018] Figure 3 This utility model Figure 1 Schematic diagram of the cross-sectional structure at point CC;

[0019] Figure 4 This utility model Figure 1 Schematic diagram of the cross-sectional structure at point DD.

[0020] The markings in the diagram are: 1. Connecting frame; 2. Water-cooled wall tube; 3. Fin; 4. Hot end thermocouple; 5. Cold end thermocouple; 6. Adjusting bolt 1; 7. Right slider; 8. Moving block; 9. Limiting groove 1; 10. Limiting groove 2; 11. Slide groove; 12. Mounting block; 13. Connecting plate; 14. Adjusting bolt 2; 15. Moving groove; 16. Left slider. Detailed Implementation

[0021] like Figures 1 to 4 As shown, this application discloses a measuring device for the heat flux density of a boiler heating surface, including a hot-end thermocouple 4 and a cold-end thermocouple 5. Water-cooled wall tubes 2 are provided on the left and right sides above the hot-end thermocouple 4 and the cold-end thermocouple 5. Fins 3 are connected between adjacent water-cooled wall tubes 2 and at the outer end of each water-cooled wall tube 2. The upper end of the hot-end thermocouple 4 is inserted into the middle fin 3. The cold-end thermocouple 5 is connected to the water-cooled wall tube 2. The hot-end thermocouple 4 is connected to the middle fin 3. A connecting frame 1 is connected between the left and right ends of the fins 3. A moving block 8 is provided on the right side of the connecting frame 1. An adjustment component is provided between the moving block 8 and the connecting frame 1.

[0022] The adjustment component includes a right slider 7 and a left slider 16. The connecting frame 1 has a groove 11. The moving block 8 is Z-shaped and is slidably connected to the groove 11. The upper right end of the inner wall of the groove 11 has a second limiting groove 10. The upper left end of the inner wall of the groove 11 has a first limiting groove 9. The right slider 7 is connected to the upper right end of the moving block 8, and the left slider 16 is connected to the upper left end of the moving block 8.

[0023] The right slider 7 and the left slider 16 are both trapezoidal in cross-section. The left slider 16 and the right slider 7 are slidably connected in the limiting groove 9 and the limiting groove 10, respectively. The right side of the connecting frame 1 is threaded with an adjusting bolt 6. The left end of the adjusting bolt 6 is inserted into the sliding groove 11 and rotatably connected to the upper right side of the moving block 8.

[0024] When using the boiler heating surface heat flux density measuring device, first weld the connecting frame 1 between the left and right fins 3. The welding position of the connecting frame 1 is on the backfire side inside the boiler. Turn the adjusting bolt 6 to the right, and the moving block 8 can move to the right with the adjusting bolt 6. The left slider 16 and the right slider 7 can slide in the limiting groove 19 and the limiting groove 20 respectively. The trapezoidal cross-section of the left slider 16 and the right slider 7 can effectively limit the upper and lower ends of the moving block 8 to prevent the moving block 8 from falling. Adjusting the position of the moving block 8 can adjust the horizontal position of the cold end thermocouple 5. By adjusting the cold end thermocouple 5 through the above-mentioned fine adjustment measures, it can adapt to water-cooled wall tubes 2 of different sizes.

[0025] Adjustment components 2 are provided between the hot-end thermocouple 4 and the connecting frame 1, and between the cold-end thermocouple 5 and the moving block 8;

[0026] The second adjustment component includes a mounting block 12, a connecting plate 13, and a second adjustment bolt 14. The moving block 8 and the connecting frame 1 both have moving grooves 15. The mounting block 12 is slidably connected to the interior of the adjacent moving grooves 15. The hot-end thermocouple 4 and the cold-end thermocouple 5 are respectively mounted on the left and right sides of the mounting block 12. The connecting plate 13 is connected to the bottom of the mounting block 12. The second adjustment bolt 14 is threadedly connected to the connecting plate 13. The second adjustment bolt 14 on the left and right sides is threadedly connected to the connecting frame 1 and the moving block 8, respectively.

[0027] After moving the cold junction thermocouple 5 to the desired installation position, as follows Figure 2 As shown, rotating the adjusting bolt 14 causes the connecting plate 13 to move up and down with the adjusting bolt 14, thereby adjusting the up and down position of the mounting block 12. The hot-end thermocouple 4 and cold-end thermocouple 5 installed inside the mounting block 12 can then move up and down with the mounting block 12. After the hot-end thermocouple 4 is inserted into the middle fin 3 and the cold-end thermocouple 5 contacts the water-cooled wall tube 2, the hot-end thermocouple 4 and cold-end thermocouple 5 are connected to the fin 3 and the water-cooled wall tube 2 respectively by spot welding. By adjusting the hot-end thermocouple 4 and cold-end thermocouple 5 through the above-mentioned fine-tuning measures, it can adapt to water-cooled wall tubes 2 of different sizes. The lower ends of the hot-end thermocouple 4 and cold-end thermocouple 5 are connected to the terminals of the heat flow meter. The heat flow meter is equipped with a corresponding data acquisition and processing system to obtain the specific value of the heat flow density of the boiler heating surface.

Claims

1. A device for measuring the heat flux density of a boiler heating surface, comprising a hot-junction thermocouple (4) and a cold-junction thermocouple (5), characterized in that: Water-cooled wall tubes (2) are provided on the left and right sides above the hot-end thermocouple (4) and the cold-end thermocouple (5). Fins (3) are connected between adjacent water-cooled wall tubes (2) and at the outer end of the water-cooled wall tubes (2). The upper end of the hot-end thermocouple (4) is inserted into the middle fin (3). The cold-end thermocouple (5) is connected to the water-cooled wall tube (2). The hot-end thermocouple (4) is connected to the middle fin (3). A connecting frame (1) is connected between the left and right fins (3). A moving block (8) is provided on the right side of the connecting frame (1). An adjustment component is provided between the moving block (8) and the connecting frame (1). Adjustment components are provided between the hot-end thermocouple (4) and the connecting frame (1), and between the cold-end thermocouple (5) and the moving block (8).

2. The measuring device for heat flux density of a boiler heating surface according to claim 1, characterized in that: The adjustment component includes a right slider (7) and a left slider (16). The connecting frame (1) has a groove (11) on it. The moving block (8) is Z-shaped and is slidably connected to the groove (11).

3. The measuring device for heat flux density of a boiler heating surface according to claim 2, characterized in that: The upper right end of the inner wall of the slide groove (11) has a second limiting groove (10), and the upper left end of the inner wall of the slide groove (11) has a first limiting groove (9).

4. The measuring device for heat flux density of a boiler heating surface according to claim 3, characterized in that: The right slider (7) is connected to the right end of the moving block (8), and the left slider (16) is connected to the left end of the moving block (8).

5. The measuring device for heat flux density of a boiler heating surface according to claim 4, characterized in that: The cross sections of the right slider (7) and the left slider (16) are both trapezoidal. The left slider (16) and the right slider (7) are slidably connected in the limiting groove one (9) and the limiting groove two (10) respectively. The right side of the connecting frame (1) is threaded with an adjusting bolt one (6). The left end of the adjusting bolt one (6) is inserted into the sliding groove (11) and rotatedly connected to the upper right side of the moving block (8).

6. The measuring device for heat flux density of a boiler heating surface according to claim 1, characterized in that: The second adjustment component includes a mounting block (12), a connecting plate (13), and two adjusting bolts (14). The moving block (8) and the connecting frame (1) are both provided with moving slots (15). The mounting block (12) is slidably connected to the inside of the adjacent moving slots (15). The hot end thermocouple (4) and the cold end thermocouple (5) are respectively mounted on the left and right sides of the mounting block (12).

7. The measuring device for heat flux density of a boiler heating surface according to claim 6, characterized in that: The connecting plate (13) is connected to the underside of the mounting block (12), and the second adjusting bolt (14) is threaded onto the connecting plate (13). The second adjusting bolt (14) on the left and right sides is threaded onto the connecting frame (1) and the moving block (8) respectively.

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