A boiler superheater scale quantitative detection device

Abstract

This utility model provides a quantitative detection device for boiler superheater oxide scale, relating to the technical field of quantitative detection of boiler superheater oxide scale. The device includes a superheater pipe and a clamp. Probes are installed on both sides of the clamp, and connecting wires are provided at the terminals of the two probes. A fixing frame is fixed to one side of the clamp, and a connecting rod is fixed to the other end of the fixing frame. A connecting structure is provided on the outer surface of the connecting rod, and a clamp is installed on the connecting structure. The connecting structure can rotate around the central axis of the connecting rod with the clamp, thereby automatically fixing the clamp to the superheater pipe. This quantitative detection device for boiler superheater oxide scale, by clamping the clamp and clamp to the outside of the superheater pipe, not only achieves automatic clamping, improving the ease of use of the detection device, but also achieves automatic coating, improving the effectiveness of the detection device.

Description

Technical Field

[0001] This utility model relates to a quantitative detection device for oxide scale in boiler superheaters, belonging to the technical field of quantitative detection of oxide scale in boiler superheaters. Background Technology

[0002] After prolonged use, the metal on the surface of a boiler superheater will oxidize in the high-temperature steam. Due to hydrogen pressure, the oxide scale will flake off. When the oxide scale reaches a certain thickness, it can cause localized overheating of the boiler, leading to overheating and tube rupture. To prevent this from happening, a detection device is usually used to quantitatively detect it.

[0003] The patent document with publication number CN221571419U describes a device for measuring the amount of oxide scale deposited inside boiler tubes, comprising a rectangular frame, a screw rotatably connected to the bottom wall of the rectangular frame, a slider symmetrically slidably connected inside the rectangular frame, a support rod fixed to the side wall of the slider, an arc-shaped clamp fixed to the end of the support rod, multiple mounting slots on the inner arc wall of the upper arc-shaped clamp, a receiving probe installed in the central mounting slot, a transmitting probe installed in the side mounting slots, and an ultrasonic detector electrically connected to both the receiving probe and the transmitting probe fixed to one outer wall of the rectangular frame.

[0004] In practical use, the aforementioned patents still have the following problems:

[0005] Firstly, the device relies on manual rotation of the handle to drive the screw, which in turn drives the arc-shaped clamping block to clamp the pipe via a slider and support rod. Since boiler superheater pipes are mostly located at high altitudes and in narrow spaces, such as furnace outlets or dense tube bundles, operators need to use both hands to rotate the handle. This not only poses safety hazards when working at heights, but also requires repeated adjustment of the handle for different pipe diameters, causing inconvenience for operators and thus making the testing device less user-friendly.

[0006] Secondly, the device lacks an integrated coupling medium, namely an industrial gel coating structure. Operators must manually apply the industrial gel to the pipe surface or probe detection surface before testing. Manual application can lead to uneven application, with excessive application resulting in wasted drips, insufficient application causing poor coupling, and application areas deviating from the detection area. These issues cause unstable ultrasonic signal reflection or transmission, affecting the accuracy of quantitative oxide scale thickness detection and ultimately resulting in suboptimal device performance. Utility Model Content

[0007] In view of the shortcomings of the prior art, this utility model provides a quantitative detection device for boiler superheater oxide scale, which overcomes the shortcomings of the prior art and effectively solves the problems of insufficient ease of use and poor performance of the detection device.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A quantitative detection device for oxide scale in a boiler superheater includes a superheater pipe and a clamp, wherein probes are provided on both sides of the clamp, and connecting wires are provided at the terminals of the two probes.

[0010] A fixing frame is fixed to one side of the clamp, and a connecting rod is fixed to the other end of the fixing frame. A connecting structure is provided on the outer surface of the connecting rod, and a clamp is provided on the connecting structure. The connecting structure can rotate around the central axis of the connecting rod with the clamp to automatically fix the clamp on the superheater pipe.

[0011] Preferably, the connecting structure includes a connecting frame, one end of which is fixed with a counterweight, and the other end of which is fixed with a clamp.

[0012] Preferably, the middle part of the connecting frame is rotatably connected to the outer surface of the connecting rod, one end of the connecting frame is fixed to the upper end of the counterweight, the other end of the connecting frame is fixed to one end of the clamp, the vertical cross-section of the clamp is arc-shaped, the outer surface of the clamp is in contact with the lower surface of the superheater pipe, and the vertical cross-section of the connecting frame is V-shaped.

[0013] Preferably, both ends of the connecting rod are fixed to one end of the fixing frame, the cross-section of the fixing frame is U-shaped, the other end of the fixing frame is fixed to one end of the clamp, the outer surface of the clamp is in contact with the upper surface of the superheater pipe, and the vertical cross-section of the clamp is arc-shaped.

[0014] Preferably, the chuck has a storage groove in the middle, guide grooves are provided on both sides of the upper end of the storage groove, an injection port is provided in the middle of the upper end of the storage groove, a through hole is provided in the middle of the lower end of the storage groove, a rubber plug is provided on the inner wall of the injection port, a sliding plate is slidably connected to the inner wall of the storage groove, and a fixing rod is fixed at the lower end of the sliding plate.

[0015] Preferably, the two guide grooves are symmetrically inclined and run through both sides of the clamp, the openings of the two guide grooves are located on the sides of the two probes, the outer surface of the rubber plug is in contact with the inner wall of the injection port, and the vertical section of the rubber plug is T-shaped.

[0016] Preferably, the outer surface of the sliding plate is slidably connected to the inner wall of the storage tank, the cross-section of the sliding plate is circular, the upper end of the fixing rod is fixed to the middle of the lower end of the sliding plate, the outer surface of the lower end of the fixing rod is in contact with the outer surface of the superheater pipe, and the outer surface of the fixing rod is slidably connected to the inner wall of the through hole.

[0017] The beneficial effects of this utility model are as follows:

[0018] 1. This boiler superheater oxide scale quantitative detection device automatically clamps the superheater pipes by placing the clamp and fixture on the outside of the superheater pipes. The fixing frame, connecting rod, connecting frame, counterweight, and fixture work together to achieve the effect of automatic clamping without the need for manual adjustment by the operator. It is especially suitable for working environments where superheater pipes are in high-altitude and narrow spaces, which greatly simplifies the operation process and improves the ease of use of the detection device.

[0019] 2. This boiler superheater oxide scale quantitative detection device, by placing the clamp and fixture on the outside of the superheater pipe, enables the storage tank, guide tank, injection port, through hole, rubber plug, sliding plate and fixing rod to work together to achieve automatic coating effect. It effectively avoids the problem of uneven coating caused by manual operation, ensures the stable ultrasonic coupling effect between the probe and the pipe, and thus improves the effect of the detection device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a partial cross-sectional view of the present invention;

[0022] Figure 3 This utility model Figure 2 Enlarged view of the A-section structure;

[0023] Figure 4 This is a partial structural schematic diagram of the present invention.

[0024] In the diagram: 1. Superheater pipe; 2. Clamp; 3. Probe; 4. Connecting wire; 5. Fixture; 6. Connecting rod; 7. Connecting frame; 8. Counterweight; 9. Clamp; 10. Storage tank; 11. Guide channel; 12. Inlet; 13. Through hole; 14. Rubber plug; 15. Sliding plate; 16. Fixing rod. Detailed Implementation

[0025] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0026] Example 1

[0027] This utility model provides a device for quantitative detection of oxide scale in boiler superheaters.

[0028] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4The system includes a superheater pipe 1 and a clamp 2. The superheater pipe 1, serving as the superheater connection pipe for the boiler superheater, is prone to oxide scale buildup during long-term high-temperature operation. The thickness of this oxide scale directly affects the safe operation of the pipe; therefore, an ultrasonic testing device is needed to accurately measure its thickness. Both sides of the clamp 2 are equipped with probes 3, which are ultrasonic probes. After automatic coating is completed, the ultrasonic probes 3 can begin operation, emitting ultrasonic signals. These signals are transmitted into the superheater pipe 1 through an industrial gel coupling medium. When the ultrasonic waves encounter the oxide scale on the inner wall of the pipe, they are reflected, and the reflected signals are received by the ultrasonic probes 3. The acoustic probe 3 converts the received reflected signal into an electrical signal and transmits it to the connected detection host. The detection host can accurately calculate the thickness of the oxide scale based on the time difference between the ultrasonic wave being emitted and the received reflected signal, combined with parameters such as the propagation speed of the ultrasonic wave in the pipe material and oxide scale. The Olympus 38DLPLUS ultrasonic thickness gauge probe 3 is preferred, which has been fully disclosed and will not be described in detail here. The two probes 3 are equipped with connecting wires 4 at their terminals. A fixing frame 5 is fixed on one side of the clamp 2, and a connecting rod 6 is fixed on the other end of the fixing frame 5. A connecting structure is provided on the outer surface of the connecting rod 6. The connecting structure includes a connecting frame 7, a counterweight 8 is fixed on one end of the connecting frame 7, and a clamp 9 is fixed on the other end of the connecting frame 7.

[0029] Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 4 It is worth noting that the middle part of the connecting frame 7 is rotatably connected to the outer surface of the connecting rod 6. One end of the connecting frame 7 is fixed to the upper end of the counterweight 8, and the other end of the connecting frame 7 is fixed to one end of the clamp 9. The vertical cross-section of the clamp 9 is arc-shaped, and the outer surface of the clamp 9 is in contact with the lower surface of the superheater pipe 1. The vertical cross-section of the connecting frame 7 is V-shaped. Both ends of the connecting rod 6 are fixed to one end of the fixing frame 5. The cross-section of the fixing frame 5 is U-shaped, and the other end of the fixing frame 5 is fixed to one end of the clamp 2. The outer surface of the clamp 2 is in contact with the upper surface of the superheater pipe 1, and the vertical cross-section of the clamp 2 is arc-shaped.

[0030] In use, this invention works as follows: The clamp 2 and fixture 9 are positioned on the outside of the superheater pipe 1. The downward pull generated by the weight of the counterweight 8 causes the connecting frame 7, which is fixedly connected to the counterweight 8, to rotate around the connecting rod 6, which is rotatably connected to its center. As the connecting frame 7 rotates, the fixture 9, fixed at its other end, moves upward synchronously, gradually reducing the distance between the fixture 9 and the clamp 2 above it. This ultimately achieves automatic clamping of the superheater pipe 1 by the clamp 2 and fixture 9. This structure achieves automatic clamping through the gravity drive of the counterweight 8, eliminating the need for manual adjustment. It is particularly suitable for working environments with superheater pipes at height and in confined spaces, significantly simplifying the operation process and improving the ease of use of the testing device.

[0031] Example 2

[0032] Please see Figure 1 , Figure 2 , Figure 3 and Figure 4 An automatic coating function has been added based on Example 1;

[0033] Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 4 It is worth noting that the chuck 2 has a storage tank 10 in the middle, and guide grooves 11 are provided on both sides of the upper end of the storage tank 10. An injection port 12 is provided in the middle of the upper end of the storage tank 10, and a through hole 13 is provided in the middle of the lower end of the storage tank 10. A rubber plug 14 is provided on the inner wall of the injection port 12. A sliding plate 15 is slidably connected to the inner wall of the storage tank 10. A fixing rod 16 is fixed at the lower end of the sliding plate 15. The two guide grooves 11 are symmetrically inclined and pass through both sides of the chuck 2. The openings of the two guide grooves 11 are located on the side close to the two probes 3. The outer surface of the rubber plug 14 is in contact with the inner wall of the injection port 12. The vertical section of the rubber plug 14 is T-shaped. The outer surface of the sliding plate 15 is slidably connected to the inner wall of the storage tank 10. The cross section of the sliding plate 15 is circular. The upper end of the fixing rod 16 is fixed to the middle of the lower end of the sliding plate 15. The outer surface of the lower end of the fixing rod 16 is in contact with the outer surface of the superheater pipe 1. The outer surface of the fixing rod 16 is slidably connected to the inner wall of the through hole 13.

[0034] In use, the following steps are taken: First, remove the rubber stopper 14 from the injection port 12, inject an appropriate amount of industrial gel into the storage groove 10 in the middle of the clamp 2, and then re-seal the injection port 12 with the rubber stopper 14. Then, by placing the clamp 2 and the clamp 9 on the outside of the superheater pipe 1, the downward force generated by the weight of the counterweight 8 causes the connecting frame 7, which is fixedly connected to the counterweight 8, to rotate around the connecting rod 6, which is rotatably connected to its middle portion. As the connecting frame 7 rotates, the clamp 9 fixed at its other end moves upward synchronously, gradually reducing the distance between the clamp 9 and the clamp 2 located above.

[0035] During this process, the clamp 2 is subjected to a reverse force from the superheater pipe 1, causing the fixed rod 16, which slides along the inner wall of the through hole 13 in the middle of the clamp 2, to move the sliding plate 15 upward. The upward-moving sliding plate 15 compresses the industrial gel in the storage tank 10. Since the injection port 12 is sealed by the rubber stopper 14, the industrial gel can only be discharged from the two guide channels 11 in the storage tank 10 to the surface of the superheater pipe 1. It then flows naturally down the pipe and covers the corresponding areas of the probes 3 set on both sides of the clamp 2 until the clamp 2 and the clamp 9 are completely pressed together. At this time, the probes 3 are tightly attached to the surface of the pipe covered with industrial gel, realizing automatic coating of industrial gel. This automatic coating effectively avoids the problem of uneven coating caused by manual operation, ensures stable ultrasonic coupling between the probes 3 and the pipe, and thus improves the performance of the detection device.

Claims

1. A quantitative detection device for boiler superheater oxide scale, comprising superheater pipes (1) and clamps (2), characterized in that: The clamp (2) is provided with probes (3) on both sides, and the terminals of the two probes (3) are provided with connecting wires (4). The clamp (2) is fixed with a fixing frame (5) on one side and a connecting rod (6) is fixed with the other end of the fixing frame (5). The connecting rod (6) has a connecting structure on its outer surface and a clamp (9) on the connecting structure. The connecting structure can rotate with the clamp (9) around the central axis of the connecting rod (6) to automatically fix the clamp (2) on the superheater pipe (1).

2. The boiler superheater oxide scale quantitative detection device according to claim 1, characterized in that: The connection structure includes a connecting frame (7), one end of which is fixed with a counterweight (8), and the other end of which is fixed with a clamp (9).

3. The boiler superheater oxide scale quantitative detection device according to claim 2, characterized in that: The connecting frame (7) is rotatably connected to the outer surface of the connecting rod (6) in the middle. One end of the connecting frame (7) is fixed to the upper end of the counterweight (8), and the other end of the connecting frame (7) is fixed to one end of the clamp (9). The vertical cut of the clamp (9) is arc-shaped. The outer surface of the clamp (9) is in contact with the lower surface of the superheater pipe (1). The vertical cut of the connecting frame (7) is V-shaped.

4. The boiler superheater oxide scale quantitative detection device according to claim 1, characterized in that: The two ends of the connecting rod (6) are fixed to one end of the fixing frame (5). The cross section of the fixing frame (5) is U-shaped. The other end of the fixing frame (5) is fixed to one end of the clamp (2). The outer surface of the clamp (2) is in contact with the upper surface of the superheater pipe (1). The vertical section of the clamp (2) is arc-shaped.

5. The boiler superheater oxide scale quantitative detection device according to claim 1, characterized in that: The chuck (2) has a storage groove (10) in the middle, and guide grooves (11) are provided on both sides of the upper end of the storage groove (10). An injection port (12) is provided in the middle of the upper end of the storage groove (10), and a through hole (13) is provided in the middle of the lower end of the storage groove (10). A rubber plug (14) is provided on the inner wall of the injection port (12). A sliding plate (15) is slidably connected to the inner wall of the storage groove (10), and a fixing rod (16) is fixed at the lower end of the sliding plate (15).

6. The boiler superheater oxide scale quantitative detection device according to claim 5, characterized in that: The two guide grooves (11) are symmetrically inclined and run through both sides of the clamp (2). The openings of the two guide grooves (11) are located on the side close to the two probes (3). The outer surface of the rubber plug (14) is in contact with the inner wall of the injection port (12). The vertical section of the rubber plug (14) is T-shaped.

7. The boiler superheater oxide scale quantitative detection device according to claim 5, characterized in that: The outer surface of the slide plate (15) is slidably connected to the inner wall of the storage tank (10). The cross-section of the slide plate (15) is circular. The upper end of the fixing rod (16) is fixed to the middle of the lower end of the slide plate (15). The outer surface of the lower end of the fixing rod (16) is in contact with the outer surface of the superheater pipe (1). The outer surface of the fixing rod (16) is slidably connected to the inner wall of the through hole (13).

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