A device for locating leaks in boiler tubes
By using a detection liquid to generate bubbles on the surface of boiler tubes, the problem of low accuracy in traditional detection methods is solved, enabling precise location of leaks and convenient maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING CANUO ENERGY EQUIP
- Filing Date
- 2025-08-27
- Publication Date
- 2026-06-30
AI Technical Summary
Traditional boiler tube leak detection methods are difficult to pinpoint accurately, resulting in low detection accuracy and increased maintenance costs.
A device comprising a main frame, a water tank, a detection mechanism, and a fixing mechanism is used to locate leak points by generating bubbles on the pipe surface using the detection liquid. The device can be quickly fixed to the pipe surface and is adaptable to different pipe sizes.
It enables precise location of boiler tube leaks, facilitating subsequent maintenance and reducing maintenance costs.
Smart Images

Figure CN224435685U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of gas leakage detection devices, and in particular to a device for locating leaks in boiler tubes. Background Technology
[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water, or organic heat carriers with a certain amount of thermal energy, which are transported through boiler tubes. Boiler tubes can be divided into round tubes and irregularly shaped tubes according to their cross-sectional shape. Among them, round steel tubes are widely used and are manufactured using seamless technology. After long-term use, some tubes will develop tiny gaps that are difficult to observe with the naked eye. If these gaps are not dealt with in time, they will affect the transport efficiency and may even lead to pipe breakage.
[0003] Traditional methods of locating cracks involve using detection instruments to detect leaking gas and pinpoint the location. However, this method struggles to pinpoint the exact location of cracks, only providing a general location. Furthermore, because boiler emissions contain similar substances in the air, the accuracy of the detection is low, hindering subsequent maintenance.
[0004] For example, when searching for cracks in a long pipe, the operator uses a handheld instrument to test the air around the pipe. By measuring the composition of the air around the pipe, the operator can determine the approximate location of the crack. However, this method cannot pinpoint the exact location of the leak, and the entire pipe must be replaced, increasing maintenance costs. Utility Model Content
[0005] This utility model discloses a device for locating leaks in boiler tubes, aiming to solve the technical problems of traditional methods which are difficult to accurately locate cracks and can only find approximate locations. Furthermore, due to the boiler's exhaust gases, the air may also contain similar substances, resulting in low detection accuracy and hindering subsequent maintenance.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A device for locating boiler tube leaks includes a main frame and an observation window fixed to its surface. A water tank is fixedly connected to the bottom of the main frame. A detection port is opened on the inner side of the main frame, and an arc-shaped hole is opened on the top of the main frame. The device further includes: a detection mechanism, which includes an insert plate inserted into the arc-shaped hole. A connecting plate is fixedly connected to the top of the insert plate, and a handle is fixedly connected to the top of the connecting plate. A connecting rod is fixedly connected to the bottom of the connecting plate, and a semi-circular plate is fixedly connected to the bottom end of the connecting rod; and a fixing mechanism, which is disposed on the surface of the main frame.
[0008] In this solution, the detection mechanism can accurately locate the leak. After the device is fixed to the pipe surface, the detection liquid in the water tank is raised into the main frame through the semi-circular plate. The insert plate slides out from the arc-shaped hole, and the liquid contacts the pipe surface through the detection port. When a crack appears, gas will enter the detection liquid and generate tiny bubbles. The operator can find the specific leak point by observing the position of the bubbles, which facilitates accurate repair.
[0009] In a preferred embodiment, the fixing mechanism includes a card holder, which is fixedly connected to the upper and lower ends of the inner side of the main frame. A rubber ring is provided on the top of the main frame, and a card block is fixedly connected to the surface of the rubber ring. A protrusion is provided on the front side of the card holder, and a buckle is engaged on the surface of the protrusion. The rubber ring is engaged with the surface of the card holder by the card block. The outer side of the rubber ring is attached to the inner side of the main frame. The protrusion is fixedly connected to the front side of the main frame, and a card groove is provided on the surface of the protrusion. The buckle is engaged in the card groove on the surface of the protrusion.
[0010] The device can be quickly fixed to the pipe surface using the fixing device, and the rubber ring can be replaced according to the pipe diameter to detect pipes of various sizes. Simply remove the rubber ring from the holder, replace it with the corresponding rubber ring according to the pipe size to achieve pipe adaptation and fixation, then wrap the main frame around the pipe surface, slide the buckle into the protrusion groove, and the device can be fixed to the pipe surface. There is no need to hand-hold the device for detection, which facilitates subsequent observation of leak points.
[0011] As described above, the device includes a main frame and an observation window fixed to its surface. A water tank is fixedly connected to the bottom of the main frame. A detection port is opened on the inner side of the main frame, and an arc-shaped hole is opened on the top of the main frame. It also includes: a detection mechanism: the detection mechanism includes an insert plate inserted into the arc-shaped hole. A connecting plate is fixedly connected to the top of the insert plate, and a handle is fixedly connected to the top of the connecting plate. A connecting rod is fixedly connected to the bottom of the connecting plate, and a semi-circular plate is fixedly connected to the bottom end of the connecting rod; and a fixing mechanism: the fixing mechanism is disposed on the surface of the main frame. The device for locating boiler tube leaks provided by this utility model has the technical effect of quickly locating and accurately positioning the leak point in the tube, facilitating subsequent tube maintenance. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the overall structure of a device for locating leaks in boiler tubes, as proposed in this utility model.
[0013] Figure 2 This is a schematic diagram of the main frame of a device for locating leaks in boiler tubes according to the present invention.
[0014] Figure 3This diagram illustrates the detection port of a device for locating leaks in boiler tubes, as proposed in this utility model.
[0015] Figure 4 This is a schematic diagram of the detection mechanism of a device for locating leaks in boiler tubes, as proposed in this utility model.
[0016] Figure 5 This is a diagram showing the rubber ring of a device for locating leaks in boiler tubes, as proposed in this utility model.
[0017] In the attached diagram: 1. Main frame; 2. Observation window; 3. Water tank; 4. Detection port; 5. Arc-shaped hole; 6. Insert plate; 7. Connecting plate; 8. Handle; 9. Connecting rod; 10. Semicircular plate; 11. Card seat; 12. Rubber ring; 13. Card block; 14. Protrusion; 15. Buckle; 16. Water inlet; 17. Vent. Detailed Implementation
[0018] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and marked in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.
[0019] The device disclosed in this utility model for locating boiler tube leaks is mainly used in scenarios where it is necessary to find specific leak points in long pipelines for repair.
[0020] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 A device for locating leaks in boiler tubes includes a main frame 1 and an observation window 2 fixed to its surface. A water tank 3 is fixedly connected to the bottom of the main frame 1. A detection port 4 is opened on the inner side of the main frame 1. An arc-shaped hole 5 is opened on the top of the main frame 1. The device also includes: a detection mechanism: the detection mechanism includes an insert plate 6, which is inserted into the arc-shaped hole 5. A connecting plate 7 is fixedly connected to the top of the insert plate 6. A handle 8 is fixedly connected to the top of the connecting plate 7. A connecting rod 9 is fixedly connected to the bottom of the connecting plate 7. A semi-circular plate 10 is fixedly connected to the bottom end of the connecting rod 9. A fixing mechanism: the fixing mechanism is set on the surface of the main frame 1.
[0021] Specifically, the detection mechanism can accurately locate the leak. After fixing the device to the pipe surface, the detection liquid in the water tank 3 is raised into the main frame 1 through the semi-circular plate 10. The insertion plate 6 slides out from the arc-shaped hole 5. The liquid contacts the pipe surface through the detection port 4. When a crack appears, gas will enter the detection liquid and generate tiny bubbles. The operator can find the specific leak point by observing the position of the bubbles, which facilitates accurate repair.
[0022] The inner side of the insert plate 6 is attached to the outer side of the detection port 4, and the top of the connecting plate 7 is attached to the top of the main frame 1. By attaching the insert plate 6 to the outer side of the detection port 4, the detection port 4 is blocked, which can prevent the detection liquid from leaking out of the detection port 4 when the device is fixed.
[0023] The connecting rod 9 is inserted into the top of the main frame 1, and the bottom of the connecting rod 9 is attached to the bottom of the water tank 3. The connecting rod 9 enables the insert plate 6 and the semi-circular plate 10 to move synchronously, quickly switch between detection and fixed states, and avoid operational errors.
[0024] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5 In a preferred embodiment, the fixing mechanism includes a card seat 11, which is fixedly connected to the upper and lower ends of the inner side of the main frame 1. A rubber ring 12 is provided on the top of the main frame 1, and a card block 13 is fixedly connected to the surface of the rubber ring 12. A protrusion 14 is provided on the front side of the card seat 11, and a buckle 15 is engaged on the surface of the protrusion 14.
[0025] Specifically, the device can be quickly fixed to the pipe surface using the fixing device, and the rubber ring 12 can be replaced according to the pipe diameter to achieve the detection of pipes of multiple sizes. The rubber ring 12 is taken out from the bracket 11, and the corresponding rubber ring 12 is replaced according to the pipe size to achieve the pipe adaptation and fixation. After the main frame 1 is wrapped around the pipe surface, the buckle 15 is slid into the slot of the protrusion 14, and the device can be fixed to the pipe surface. There is no need to carry out the detection by hand, which facilitates the subsequent observation of the air leakage point.
[0026] The rubber ring 12 is snapped onto the surface of the card seat 11 by the card block 13. The outer side of the rubber ring 12 is attached to the inner side of the main frame 1. The protrusion 14 is fixedly connected to the front side of the main frame 1. The surface of the protrusion 14 is provided with a card groove. The buckle 15 is snapped into the card groove on the surface of the protrusion 14. The rubber ring 12 can make the device fit tightly against the surface of the tube, preventing air leakage from affecting the test results. At the same time, the replaceable design makes it convenient to test tubes of different sizes.
[0027] Reference Figure 1 and Figure 5In a preferred embodiment, there are two main frames 1, and the rear ends of the two main frames 1 are hinged to rotate. A water inlet 16 is provided on the front side of the main frame 1, and a plug is provided inside the water inlet 16. An exhaust port 17 is provided on the rear top side of the main frame 1, and the water tank 3 is provided with detection liquid.
[0028] Specifically, the detection liquid in the water tank 3 is tap water. Tap water is added to the water tank 3 through the water inlet 16. The vent 17 on the top of the main frame 1 can prevent a large amount of liquid from entering the main frame 1 and causing the device to break.
[0029] Working principle: Select the corresponding rubber ring 12 according to the pipe size, and insert the bottom locking block 13 of the rubber ring 12 into the locking seat 11 to fix the rubber ring 12. Remove the buckle 15, and rotate the left and right main frames 1 through the rear hinge of the main frame 1 to inject the detection liquid into the water tank 3 from the inlet 16. When the water tank 3 is full, plug the inlet 16 to complete the pre-use setup of the device. After the two main frames 1 are placed on the pipe surface, the rubber ring 12 fits against the pipe surface. At the same time, slide the buckle 15 into the groove of the protrusion 14 to fix the device on the pipe surface. Pulling up the handle 8 moves the semi-circular plate 10 upwards via the connecting plate 7 and connecting rod 9, bringing the detection liquid in the water tank 3 into the main frame 1. During this process, the insert plate 6 also slides out from the arc-shaped hole 5, making the detection port 4 connected to the main frame 1. When a leak occurs in the pipeline, the gas is discharged into the main frame 1. The generation of bubbles can be observed through the observation window 2, indicating that there is a leak in the pipeline at that location. The exact leak point can be found by the location of the bubbles, facilitating subsequent maintenance. The gas entering the main frame 1 can be discharged from the exhaust port 17 at the top, preventing damage from excessive pressure in the main frame 1.
[0030] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. The substitutions may be replacements of some structures, devices, or method steps, or they may be complete technical solutions. Equivalent substitutions or modifications made based on the technical solution and inventive concept of this utility model should all be covered within the protection scope of this utility model.
Claims
1. A device for finding the leakage position of a boiler pipe, comprising a main frame (1) and an observation window (2) fixed on the surface of the main frame (1), a water tank (3) is fixedly connected to the bottom of the main frame (1), a detection port (4) is arranged on the inner side of the main frame (1), and an arc-shaped hole (5) is arranged on the top of the main frame (1), characterized in that, Also includes: Testing mechanism: The testing mechanism includes a plug plate (6), which is inserted into the arc-shaped hole (5). A connecting plate (7) is fixedly connected to the top of the plug plate (6), and a handle (8) is fixedly connected to the top of the connecting plate (7). A connecting rod (9) is fixedly connected to the bottom of the connecting plate (7), and a semi-circular plate (10) is fixedly connected to the bottom of the connecting rod (9). Fixing mechanism: The fixing mechanism is set on the surface of the main frame (1).
2. The device for locating boiler tube leaks according to claim 1, characterized in that, The inner side of the insert plate (6) is attached to the outer side of the detection port (4), and the top of the connecting plate (7) is attached to the top of the main frame (1).
3. The device for locating boiler tube leaks according to claim 2, characterized in that, The connecting rod (9) is inserted into the top of the main frame (1), and the bottom of the connecting rod (9) is attached to the bottom of the water tank (3).
4. The device for locating boiler tube leaks according to claim 1, characterized in that, The fixing mechanism includes a card holder (11), which is fixedly connected to the upper and lower ends of the inner side of the main frame (1). A rubber ring (12) is provided on the top of the main frame (1), and a card block (13) is fixedly connected to the surface of the rubber ring (12). A protrusion (14) is provided on the front side of the card holder (11), and a buckle (15) is engaged on the surface of the protrusion (14).
5. The device for locating boiler tube leaks according to claim 4, characterized in that, The rubber ring (12) is snapped onto the surface of the card holder (11) by the card block (13), and the outer side of the rubber ring (12) is attached to the inner side of the main frame (1).
6. The device for locating boiler tube leaks according to claim 5, characterized in that, The protrusion (14) is fixedly connected to the front side of the main frame (1), and the surface of the protrusion (14) is provided with a slot, and the buckle (15) is engaged in the slot on the surface of the protrusion (14).
7. The device for locating boiler tube leaks according to claim 1, characterized in that, There are two main frames (1), and the rear ends of the two main frames (1) are connected by hinges to rotate. A water inlet (16) is provided on the front side of the main frame (1), and a plug is provided inside the water inlet (16). An exhaust port (17) is provided on the rear top side of the main frame (1), and a detection liquid is provided inside the water tank (3).