A boiler water wall header

Abstract

The utility model relates to a boiler technical field, concretely is a kind of boiler water wall header.It includes water collecting tank, water delivery device and multiple water wall pipes.Multiple water wall pipes are communicated with the bottom end of water collecting tank;First check valve is installed on multiple water wall pipes;Water delivery device includes lifting frame, servo cylinder and multiple groups of adjustable piston assembly, and adjustable piston assembly includes sealing piston, piston rod, outer sleeve tube, threaded rod and internal thread pipe;The upper end of multiple threaded rods is equipped with the driving assembly for driving its rotation.The ultrasonic steam sensor installed in the utility model can monitor the steam content inside water wall pipe in real time;When detecting that the steam content in certain water wall pipe is too high, the water flow in corresponding water wall pipe per unit time is adjusted by the driving assembly set, so that the steam content in pipeline can be reduced, and the burning of water wall pipe caused by overheating is avoided.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, and in particular to a boiler water-cooled wall header. Background Technology

[0002] The boiler water-cooled wall header plays a crucial role in the boiler system. It is responsible for distributing water to each water-cooled wall tube, which in turn absorbs heat from the furnace and turns the water into steam, thus realizing energy conversion.

[0003] Traditional boiler water-cooled wall headers still have the following technical defects during operation: Due to varying heating times, water-cooled wall tubes of different lengths exhibit significant differences in steam content during the heating process. Longer water-cooled wall tubes may have excessively high steam content, easily leading to overheating and burnout, affecting the safe operation of the boiler; while shorter water-cooled wall tubes may have insufficient steam content, resulting in energy waste. Utility Model Content

[0004] The purpose of this utility model is to address the problems existing in the background technology by proposing a boiler water-cooled wall header.

[0005] The technical solution of this utility model is a boiler water-cooled wall header, comprising: A water collection tank, with a support frame at the bottom; Multiple water-cooled wall tubes are connected to the bottom of the water collection tank; each water-cooled wall tube is equipped with a first check valve. The water conveying device includes a lifting frame, a servo cylinder, and multiple adjustable piston assemblies. The lifting frame is located above the water collection tank. The servo cylinder is mounted on the water collection tank, and its output shaft is connected to the lifting frame. The multiple adjustable piston assemblies are arranged one-to-one with multiple water-cooled wall tubes. Each adjustable piston assembly includes a sealing piston, a piston rod, an outer sleeve, a threaded rod, and an internal threaded tube. The internal threaded tube is rotatably mounted on the upper end of the lifting frame. The threaded rod is threadedly connected to the internal threaded tube. The outer sleeve is vertically connected to the lower end of the lifting frame. The upper end of the piston rod is movably located inside the outer sleeve and connected to the threaded rod. The sealing piston is connected to the bottom end of the piston rod. Each of the multiple threaded rods has a drive assembly installed at its upper end to drive its rotation. The vent bend has its main body located inside the piston rod. One end of the vent bend passes through the sealing piston, and the other end passes through the side wall of the piston rod. A second one-way valve is installed on the vent bend.

[0006] Preferably, the drive assembly includes a splined sleeve, a splined shaft, and a knob. The splined shaft is connected to the upper end of the threaded rod, the splined sleeve is slidably mounted on the outside of the splined shaft in a vertical direction, the knob is mounted on the upper end of the splined sleeve, and a fixed bracket is provided on the water collection tank. Multiple splined sleeves are rotatably mounted on the fixed bracket.

[0007] Preferably, the piston rod is provided with a scale bar.

[0008] Preferably, the water collection tank is equipped with multiple transparent glass panels.

[0009] Preferably, ultrasonic steam sensors are installed at the ends of multiple water-cooled wall tubes.

[0010] Preferably, the water collection tank is connected to an inlet pipe, and a filter screen is installed inside the inlet pipe.

[0011] Preferably, a section of the water-cooled wall tube adjacent to the water collection tank is vertically installed.

[0012] Compared with the prior art, the present invention has the following beneficial technical effects: 1. In this technical solution, the servo cylinder drives the lifting frame to move multiple adjustable piston assemblies synchronously, thereby realizing the synchronous water supply to multiple water-cooled wall tubes and ensuring the uniformity of water flow in each water-cooled wall tube. 2. Installing an ultrasonic steam sensor at the inner end of the water-cooled wall tube enables real-time monitoring of the steam content inside the tube and feeds the detection signal back to the PLC controller and computer, thus providing a basis for subsequent adjustments. When the steam content inside a water-cooled wall tube is detected to be too high, the extension and retraction length of the corresponding adjustable piston assembly is adjusted by the set drive component to increase the water flow rate per unit time in the water-cooled wall tube, thereby reducing the steam content in the pipe and preventing the water-cooled wall tube from burning out due to overheating. Attached Figure Description

[0013] Figure 1 and Figure 2 All of these are schematic diagrams of the structure of this utility model; Figure 3 This is a cross-sectional view of the water tank in this utility model; Figure 4 This is a schematic diagram of the piston rod, sealing piston, venting bend, and second one-way valve in this utility model.

[0014] Reference numerals in the attached drawings: 1. Water collection tank; 2. Support bracket; 3. Water-cooled wall tube; 4. Water inlet pipe; 5. First check valve; 6. Sealing piston; 7. Piston rod; 8. Scale bar; 9. Transparent glass; 10. Lifting frame; 11. Fixed support bracket; 12. Threaded rod; 13. Internally threaded pipe; 14. Splined sleeve; 141. Knob; 15. Splined shaft; 16. Outer sleeve; 17. Servo cylinder; 18. Vent bend; 19. Second check valve. Detailed Implementation

[0015] Example 1; as Figures 1-4As shown, the boiler water-cooled wall header proposed in this embodiment includes a water collection tank 1, a water conveying device, a venting bend 18, and multiple water-cooled wall pipes 3. A bracket 2 is provided at the bottom of the water collection tank 1; multiple water-cooled wall tubes 3 are connected to the bottom of the water collection tank 1, and ultrasonic steam sensors are installed at the ends of the multiple water-cooled wall tubes 3; a first one-way valve 5 is installed on the multiple water-cooled wall tubes 3.

[0016] The water supply device includes a lifting frame 10, a servo cylinder 17, and multiple adjustable piston assemblies. The lifting frame 10 is located above the water collection tank 1. The servo cylinder 17 is mounted on the water collection tank 1, and its output shaft is connected to the lifting frame 10. Multiple adjustable piston assemblies are correspondingly arranged with multiple water-cooled wall tubes 3. Each adjustable piston assembly includes a sealing piston 6, a piston rod 7, an outer sleeve 16, a threaded rod 12, and an internally threaded tube 13. The internally threaded tube 13 is rotatably mounted on the upper end of the lifting frame 10. The threaded rod 12 is threadedly connected to the internally threaded tube 13. The outer sleeve 16 is vertically connected to the lower end of the lifting frame 10. The upper end of the piston rod 7 is movably located inside the outer sleeve 16 and connected to the threaded rod 12. The sealing piston 6 is connected to the bottom end of the piston rod 7. The section of the wall tube 3 adjacent to the water collection tank 1 is vertically arranged, which allows the sealing piston 6 to be vertically inserted into the inner side of the water-cooled wall tube 3 adjacent to the water collection tank 1. The piston rod 7 is provided with a scale bar 8, and the water collection tank 1 is provided with multiple transparent glass 9s. The transparent glass 9s allow the operator to easily observe the corresponding position of the bottom end of the outer tube 16 on the scale bar 8, thereby determining the moving position of the sealing piston 6. The upper ends of the multiple threaded rods 12 are all equipped with drive components for driving their rotation. The main body of the vent bend 18 is located inside the piston rod 7. One end of the vent bend 18 passes through the sealing piston 6, and the other end passes through the side wall of the piston rod 7. A second one-way valve 19 is installed on the vent bend 18.

[0017] A water inlet pipe 4 is connected to the water collection tank 1. A filter screen is installed inside the water inlet pipe 4 to filter out impurities in the incoming water flow.

[0018] The working principle of this technical solution is as follows: The servo cylinder 17 is activated to drive the lifting frame 10 to move up and down reciprocally. The lifting frame 10 drives multiple adjustable piston assemblies to move synchronously. When the sealing piston 6 enters the inner side of the water-cooled wall tube 3, the sealing piston 6 pressurizes water into the interior of the water-cooled wall tube 3. The first one-way valve 5 only allows water to flow from the water collection tank 1 to the water-cooled wall tube 3. When the sealing piston 6 is driven to reset upward, the venting bend 18 enters the space below the sealing piston 6 inside the water-cooled wall tube 3, allowing the sealing piston 6 to smoothly exit from the inner side of the water-cooled wall tube 3. The second one-way valve 19 only allows gas to flow from top to bottom through the venting bend 18. The above structure enables synchronous water supply to multiple water-cooled wall tubes 3.

[0019] Since the lengths of the multiple water-cooled wall tubes 3 may vary, the heating time for the water inside the longer water-cooled wall tubes 3 is longer, while the heating time for the shorter water-cooled wall tubes 3 is shorter. If the heating time is long, the steam content inside the water-cooled wall tubes 3 will be high, and there is a risk of overheating and burning out of the long water-cooled wall tubes 3 due to excessively high steam content. Therefore, an ultrasonic steam sensor is installed at the inner end of the water-cooled wall tubes 3 to monitor the steam content inside the water-cooled wall tubes 3 in real time and feed the detected signal back to the PLC controller. The PLC controller processes the signal and sends it to the computer. If the steam content inside the water-cooled wall tubes 3 is too high, the operator can adjust the extension length of the adjustable piston assembly above the corresponding water-cooled wall tube 3, driving the threaded rod 12 to rotate and move it downward, which in turn moves the piston rod 7 and the sealing piston 6 downward, thereby increasing the water flow rate per unit time in the corresponding water-cooled wall tube 3, reducing the steam content inside the water-cooled wall tubes 3, and preventing the water-cooled wall tubes 3 from burning out.

[0020] Example 2; as Figures 1-3 As shown in the figure, the boiler water-cooled wall header proposed in this embodiment, compared with the first embodiment, the driving component in this embodiment includes a splined sleeve 14, a splined shaft 15 and a knob 141, wherein the splined shaft 15 is connected to the upper end of the threaded rod 12, the splined sleeve 14 is slidably installed on the outside of the splined shaft 15 in the vertical direction, the knob 141 is installed on the upper end of the splined sleeve 14, and a fixed bracket 11 is provided on the water collection tank 1, and multiple splined sleeves 14 are rotatably installed on the fixed bracket 11.

[0021] In this embodiment, the spline sleeve 14 can be driven to rotate by the knob 141. The rotation of the spline sleeve 14 drives the spline shaft 15 to rotate, and the rotation of the spline shaft 15 drives the threaded rod 12 to rotate. The above structure ensures that the operator will not be affected by the lifting motion during the rotation of the threaded rod 12.

[0022] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A boiler water-cooled wall header, characterized in that, include: Water collection tank (1), with a support (2) at the bottom of the water collection tank (1); Multiple water-cooled wall tubes (3) are connected to the bottom of the water collection tank (1); each of the multiple water-cooled wall tubes (3) is equipped with a first check valve (5). The water conveying device includes a lifting frame (10), a servo cylinder (17), and multiple adjustable piston assemblies. The lifting frame (10) is located above the water collection tank (1). The servo cylinder (17) is installed on the water collection tank (1) and its output shaft is connected to the lifting frame (10). Multiple adjustable piston assemblies are arranged one-to-one with multiple water-cooled wall tubes (3). The adjustable piston assembly includes a sealing piston (6), a piston rod (7), an outer sleeve (16), a threaded rod (12), and an internal thread. The tube (13) is rotatably mounted on the upper end of the lifting frame (10), the threaded rod (12) is threadedly connected to the internal threaded tube (13), the outer sleeve (16) is vertically connected to the lower end of the lifting frame (10), the upper end of the piston rod (7) is movably located inside the outer sleeve (16) and connected to the threaded rod (12), and the sealing piston (6) is connected to the bottom end of the piston rod (7); the upper ends of the multiple threaded rods (12) are all equipped with drive components for driving their rotation. Vent bend (18), the main body of vent bend (18) is located inside piston rod (7), one end of vent bend (18) passes through sealing piston (6), and the other end passes through side wall of piston rod (7), and a second one-way valve (19) is installed on vent bend (18).

2. A boiler water-cooled wall header according to claim 1, characterized in that, The drive assembly includes a spline sleeve (14), a spline shaft (15), and a knob (141). The spline shaft (15) is connected to the upper end of the threaded rod (12). The spline sleeve (14) is slidably mounted on the outside of the spline shaft (15) in the vertical direction. The knob (141) is mounted on the upper end of the spline sleeve (14). A fixed bracket (11) is provided on the water collection tank (1). Multiple spline sleeves (14) are rotatably mounted on the fixed bracket (11).

3. A boiler water-cooled wall header according to claim 1, characterized in that, The piston rod (7) is provided with a scale bar (8).

4. A boiler water-cooled wall header according to claim 3, characterized in that, The water collection tank (1) is equipped with multiple transparent glass panels (9).

5. A boiler water-cooled wall header according to claim 1, characterized in that, Ultrasonic steam sensors are installed at the ends of multiple water-cooled wall tubes (3).

6. A boiler water-cooled wall header according to claim 1, characterized in that, A water inlet pipe (4) is connected to the water collection tank (1), and a filter screen is installed inside the water inlet pipe (4).

7. A boiler water-cooled wall header according to claim 1, characterized in that, The section of the water-cooled wall tube (3) adjacent to the water collection tank (1) is set vertically.

Images