A boiler body air leakage detection device

Abstract

The utility model discloses a kind of boiler body air leakage detection devices, including wind pressure measuring instrument, detection tube group and reference tube group are respectively installed on the wind pressure measuring instrument, communication pipe A is equipped on the detection tube group, and detection spiral pipe is connected with the end of communication pipe A;Reference spiral pipe is connected with the end of communication pipe B, and reference spiral pipe is equipped on the reference tube group;Reference end is equipped in the end of reference spiral pipe.This boiler body air leakage detection device, when using, it is convenient to elongate and use detection tube group and reference tube group, idle state is contracted together, reduce the volume of detection tube group and reference tube group, it is beneficial to storage, while spiral detection spiral pipe and reference spiral pipe are not easy to be wound together, more cannot occur bending extrusion, its internal passage cannot occur obstruction, not easy to appear reading stagnation, can reflect the pressure change of detection point in boiler, realize accurate air leakage detection to boiler.

Description

Technical Field

[0001] This utility model relates to the field of boiler maintenance equipment, specifically a boiler body air leakage detection device. Background Technology

[0002] Detection of air leakage in boilers mainly relies on three types of equipment: air pressure measuring instruments, flue gas analyzers, and ultrasonic leak detectors. These three instruments have different applicable scenarios, installation locations, and detection principles. Taking the air pressure measuring instrument as an example, its working principle is as follows: its core function is to determine the overall leakage trend and degree, and it is suitable for macroscopic detection of large areas such as the furnace and flue; its installation location is in the negative pressure area of ​​the furnace (such as the top of the furnace or the upper middle part of the side wall; the furnace is usually under slight negative pressure during normal boiler operation); its detection principle… For example: the boiler has a design value for the air pressure in each area (e.g., the furnace is designed with a slight negative pressure of -50~-100Pa); if there is air leakage in the boiler body: outside air will seep into the negative pressure area (e.g., the furnace), causing the measured negative pressure value to be less than the design value (e.g., from -80Pa to -30Pa); internal air / flue gas will leak in the positive pressure area (e.g., the air duct), causing the measured positive pressure value to be less than the design value; the deviation between the "measured value and the design value" is collected by the air pressure sensor, and if it exceeds the allowable range (usually ±20%), it is determined that there is air leakage; Taking a handheld wind pressure measuring instrument as an example, it is equipped with two hoses of different colors (usually the measuring hose is yellow and the reference hose is white). The two hoses are quite long, and during use, they are easy to get tangled together and left scattered. When they get tangled, the hoses will inevitably be bent and squeezed in many places (especially when the long hose is wrapped many times), which will cause the internal channel to narrow or even temporarily block it. Since boiler wind pressure measurement is mostly at micro-pressure (such as furnace negative pressure -50~-100Pa, flue gas differential pressure <500Pa), the slight channel resistance will cancel out or delay the transmission of pressure signals, which can easily cause reading stagnation and fail to reflect the pressure changes at the measuring point. Utility Model Content

[0003] The purpose of this invention is to provide a boiler body air leakage detection device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, a boiler body air leakage detection device is provided, including an air pressure measuring instrument. The air pressure measuring instrument is equipped with a detection tube group and a reference tube group. The detection tube group is provided with a connecting tube A, and the end of the connecting tube A is connected to a detection spiral tube. The reference tube group is provided with a connecting tube B, and the end of the connecting tube B is connected to a reference spiral tube. The end of the reference spiral tube is provided with a reference end, and the end of the detection spiral tube is provided with a detection end.

[0005] Furthermore, the wind pressure measuring instrument has a handle on the back, and the handle is U-shaped, with a protective pad attached to the handle.

[0006] Furthermore, the detection tube assembly and the reference tube assembly are of the same length, and the detection tube assembly also includes a docking post and a storage sleeve A; the reference tube assembly also includes a docking sleeve and a storage sleeve B.

[0007] Furthermore, the docking post is installed at the end of the connecting pipe A, and the docking sleeve is installed at the end of the connecting pipe B. The dimensions of the docking sleeve and the docking post are compatible, and the docking post is inserted into the inside of the docking sleeve. The connecting pipe A and the connecting pipe B are connected through the docking sleeve and the docking post.

[0008] Furthermore, the storage sleeve A is fitted onto the outside of the detection end, and a magnetic block is provided at the end of the storage sleeve A; the storage sleeve B is fitted onto the outside of the reference end, and a metal block is provided at the end of the storage sleeve B.

[0009] Furthermore, the metal block and the magnetic block are adsorbed and fixed, and the storage sleeve A and the storage sleeve B are connected through the metal block and the magnetic block.

[0010] Furthermore, both the reference spiral tube and the detection spiral tube are spiral-shaped, and the pitch and number of turns of the reference spiral tube and the detection spiral tube are the same.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. This solution uses spiral tubes for both detection and reference, which are flexible spiral tubes. During use, the detection and reference tube sets can be extended and retracted when not in use, reducing their volume and facilitating storage. Furthermore, the spiral shape of the detection and reference tubes prevents them from tangling, bending, or being squeezed, ensuring their internal channels are not blocked and preventing reading stagnation. This allows for accurate detection of air leakage in the boiler by reflecting pressure changes at the detection points. 2. This solution addresses boiler air leakage detection by extending the detection spiral tube and reference spiral tube to the target length as needed for different measuring points, without the scattering and accumulation of redundant parts that occurs with traditional long flexible tubes. During testing, simply extend the detection spiral tube to the measuring point based on the distance between the air pressure measuring instrument's operating position and the boiler measuring point, and extend the reference spiral tube to the windless reference area, eliminating the need to spend time organizing redundant flexible tubes. Attached Figure Description

[0012] Figure 1 This is a front view schematic diagram of the structure of this utility model; Figure 2 This is a side view of the structure of this utility model; Figure 3 This is a top view of the structure of this utility model; Figure 4 This is a structural testing spiral tube for the present invention, and a structural diagram of the reference spiral tube. Figure 5 This is a schematic diagram showing the separation of the structural detection spiral tube and the reference spiral tube of this utility model. Figure 6 This is a bottom view of the structure of this utility model.

[0013] The following are the labels in the diagram: 1. Wind pressure measuring instrument; 2. Handle; 21. Protective pad; 3. Detection tube assembly; 31. Connecting tube A; 311. Connecting post; 32. Detection spiral tube; 33. Detection end; 34. Storage sleeve A; 341. Magnetic block; 4. Reference tube assembly; 41. Connecting tube B; 411. Connecting sleeve; 42. Reference spiral tube; 43. Reference end; 44. Storage sleeve B; 441. Metal block. Detailed Implementation

[0014] Please see Figure 1-6 This utility model provides a boiler body air leakage detection device, including an air pressure measuring instrument 1. The air pressure measuring instrument 1 is equipped with a detection tube group 3 and a reference tube group 4. The detection tube group 3 is provided with a connecting tube A31, and the end of the connecting tube A31 is connected to a detection spiral tube 32. The reference tube group 4 is provided with a connecting tube B41, and the end of the connecting tube B41 is connected to a reference spiral tube 42. The end of the reference spiral tube 42 is provided with a reference end 43, and the end of the detection spiral tube 32 is provided with a detection end 33.

[0015] Working principle: In use, first connect the detection tube group 3 and reference tube group 4 on the wind pressure measuring instrument 1 to the metal probe. At this time, the detection tube group 3 and reference tube group 4 are flexible tubes. The detection tube group 3 and reference tube group 4 are respectively equipped with detection spiral tube 32 and reference spiral tube 42. The detection spiral tube 32 and reference spiral tube 42 are spiral flexible tubes. When in use, it is easy to extend the detection tube group 3 and reference tube group 4. When not in use, they are retracted together, reducing the volume of the detection tube group 3 and reference tube group 4 and making them easy to store. At the same time, the spiral shape of the detection spiral tube 32 and reference spiral tube 42 is not easy to get tangled together, and it will not be bent or squeezed. Its internal channels will not be blocked, and it is not easy to have reading stagnation. It can reflect the pressure changes of the monitoring points inside the boiler and realize accurate air leakage detection of the boiler.

[0016] As a preferred embodiment, the wind pressure measuring instrument 1 has a handle 2 on the back, and the handle 2 is U-shaped, with a protective pad 21 fitted on the handle 2.

[0017] The detection tube assembly 3 and the reference tube assembly 4 have the same length. The detection tube assembly 3 also includes a docking post 311 and a storage sleeve A34; the reference tube assembly 4 also includes a docking sleeve 411 and a storage sleeve B44.

[0018] The connecting post 311 is installed at the end of the connecting pipe A31, and the connecting sleeve 411 is installed at the end of the connecting pipe B41. The dimensions of the connecting sleeve 411 and the connecting post 311 are compatible, and the connecting post 311 is inserted into the inside of the connecting sleeve 411. The connecting pipe A31 and the connecting pipe B41 are connected through the connecting sleeve 411 and the connecting post 311.

[0019] like Figure 1-5 As shown: The detection spiral tube 32 and the reference spiral tube 42 adopt a spiral flexible tube structure, which can naturally shrink into a compact spiral coil when not in use, which can significantly reduce the overall volume of the detection tube group 3 and the reference tube group 4. Compared with traditional long flexible tubes, which need to be wound and stored separately and are easy to knot, the shrunken spiral tubes do not need to be organized and can be directly put into the portable case along with the wind pressure measuring instrument 1, reducing the space occupied by tools on site. When carrying, the flexible tubes will not snag on equipment or drag on the ground due to being scattered. They are especially suitable for mobile detection scenarios around the boiler body, with many steel frames, pipelines, and narrow platforms, improving the flexibility of tool handling. Traditional long hoses are prone to local bending due to their length, which can obstruct the transmission of pressure inside the hose. However, when the detection spiral tube 32 and the reference spiral tube 42 are used in a long-length manner, the spiral structure can keep the tube body straight, reducing the problems of local flattening and narrowing of the channel caused by winding. For the detection tube group 3, the straight detection spiral tube 32 can completely transmit the real pressure of the boiler measuring point, avoid pressure loss caused by bending, and ensure that the signal received by the wind pressure measuring instrument 1 at the detection end is not distorted. For reference tube group 4, when reference spiral tube 42 is straight, it can stably collect reference pressure and will not cause crosstalk between reference end and detection end due to winding, providing a reliable reference for differential pressure calculation of wind pressure measuring instrument 1, and ensuring the accuracy of air leakage detection data from the source; Boiler air leakage detection requires different measuring points, such as the top of the furnace, the tail flue, and the air chamber. The length of the hose can be adjusted, and the detection spiral tube 32 and the reference spiral tube 42 can be stretched to the target length as needed. During the stretching process, there will be no situation where redundant parts of the traditional long hose are scattered and piled up. During the test, you only need to stretch the detection spiral tube 32 to the measuring point according to the distance between the operating position of the air pressure measuring instrument 1 and the boiler measuring point, and stretch the reference spiral tube 42 to the windless reference area. There is no need to spend time tidying up the redundant hoses.

[0020] In a preferred embodiment, the storage sleeve A34 is fitted onto the outside of the detection end 33, and the end of the storage sleeve A34 is provided with a magnetic block 341. The storage sleeve B44 is fitted onto the outside of the reference end 43, and the end of the storage sleeve B44 is provided with a metal block 441.

[0021] Metal block 441 and magnetic block 341 are attracted and fixed, and storage sleeve A34 and storage sleeve B44 are connected through metal block 441 and magnetic block 341.

[0022] Furthermore, both the reference spiral tube 42 and the detection spiral tube 32 are spiral-shaped, and the pitch and number of turns of the reference spiral tube 42 and the detection spiral tube 32 are the same.

[0023] When the detection spiral tube 32 and the reference spiral tube 42 are in use or idle, the bottom of the two tube sets are connected by inserting the docking post 311 into the inside of the docking sleeve 411, and the top of them are connected by the metal block 441 and the magnetic block 341. When not in use, the bottom docking post 311 is inserted into the docking sleeve 411, and the top metal block 441 and magnetic block 341 are attracted and fixed, which can tightly integrate the detection tube group 3 and the reference tube group 4 into one. Combined with the shrinkage characteristics of the spiral tube itself, the overall volume is further reduced, making it convenient to store and carry with the wind pressure measuring instrument 1, and avoiding the loss or tangling of the two tube groups when stored separately. When in use, it can be quickly unfolded simply by separating the top magnetic suction and the bottom plug, without spending time tidying up the scattered tube assembly. After disassembly, the two sets of tube assemblies have maintained a relatively regular positional relationship through the docking column 311 and docking sleeve 411, and the metal block 441 and magnetic block 341. During the stretching process, it is not easy for them to become entangled or cross. The detection spiral tube 32 can be quickly aligned with the boiler measuring point and the reference spiral tube 42 can be placed in the reference pressure area, reducing the operation time.

Claims

1. A boiler body air leakage detection device, comprising an air pressure measuring instrument (1), characterized in that: The wind pressure measuring instrument (1) is equipped with a detection tube group (3) and a reference tube group (4). The detection tube group (3) is provided with a connecting tube A (31), and the end of the connecting tube A (31) is connected to a detection spiral tube (32). The reference tube group (4) is provided with a connecting tube B (41), and the end of the connecting tube B (41) is connected to a reference spiral tube (42). The end of the reference spiral tube (42) is provided with a reference end (43), and the end of the detection spiral tube (32) is provided with a detection end (33).

2. The boiler body air leakage detection device according to claim 1, characterized in that: The wind pressure measuring instrument (1) has a handle (2) on the back, and the handle (2) is U-shaped. A pad (21) is attached to the handle (2).

3. The boiler body air leakage detection device according to claim 1, characterized in that: The detection tube assembly (3) and the reference tube assembly (4) have the same length. The detection tube assembly (3) also includes a docking post (311) and a storage sleeve A (34); the reference tube assembly (4) also includes a docking sleeve (411) and a storage sleeve B (44).

4. The boiler body air leakage detection device according to claim 3, characterized in that: The docking post (311) is installed at the end of the connecting pipe A (31), and the docking sleeve (411) is installed at the end of the connecting pipe B (41). The dimensions of the docking sleeve (411) and the docking post (311) are compatible. At the same time, the docking post (311) is inserted into the inside of the docking sleeve (411). The connecting pipe A (31) and the connecting pipe B (41) are docked through the docking sleeve (411) and the docking post (311).

5. A boiler body air leakage detection device according to claim 3, characterized in that: The storage sleeve A (34) is fitted onto the outside of the detection end (33), and the end of the storage sleeve A (34) is provided with a magnetic block (341). The storage sleeve B (44) is fitted onto the outside of the reference end (43), and the end of the storage sleeve B (44) is provided with a metal block (441).

6. The boiler body air leakage detection device according to claim 5, characterized in that: The metal block (441) and the magnetic block (341) are adsorbed and fixed, and the storage sleeve A (34) and the storage sleeve B (44) are connected through the metal block (441) and the magnetic block (341).

7. The boiler body air leakage detection device according to claim 1, characterized in that: Both the reference spiral tube (42) and the detection spiral tube (32) are spiral-shaped, and the pitch and number of turns of the reference spiral tube (42) and the detection spiral tube (32) are the same.

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