Air tightness detection device for hydroelectric generator

Abstract

The utility model discloses an air tightness detection device for a hydroelectric generator, and relates to the technical field of hydroelectric generators, the air tightness detection device for the hydroelectric generator comprises a detection assembly, an alarm assembly and a tracing assembly, the detection assembly comprises a controller and a pressure sensor, the pressure sensor is electrically connected with the controller, and the controller is electrically connected with the alarm assembly. The air pressure sensor is used for detecting air pressure in the hydroelectric generator and feeding back to the controller; the alarm assembly is electrically connected with the controller so as to give an alarm when the air pressure in the hydroelectric generator reaches a critical value; the tracing assembly comprises a tracing bottle and a connecting pipe, the two ends of the connecting pipe are used for communicating with the tracing bottle and the hydroelectric generator respectively, a piston structure is arranged in the connecting pipe, tracing gas is stored in the tracing bottle, and when the air pressure in the hydroelectric generator is reduced, the tracing bottle and the hydroelectric generator generate pressure difference to push the piston structure to move; and the tracing bottle is communicated with the hydroelectric generator, so that the tracing gas enters the hydroelectric generator.

Description

Technical Field

[0001] The utility model relates to the technical field of hydroelectric generators, in particular to an air tightness detection device for hydroelectric generators. Background Art

[0002] As a clean energy device that converts water energy into electricity, the coordinated operation of its internal mechanical and electrical components is crucial during the operation of a hydroelectric generator. The effective operation of these components depends on a stable and controlled environment, and airtightness is a key factor in ensuring that this environment is not affected by external factors. Sealing devices have become an essential feature of hydroelectric generator sets. Existing sealing solutions for hydroelectric generators only address individual components such as motor bearings, voltmeters, sealing rings, and volutes, without considering the sealing of the entire hydroelectric generator system. When a leak occurs in the hydroelectric generator system, the response time is long, affecting the normal operation of the hydroelectric generator. Utility Model Content

[0003] The main purpose of the utility model is to provide an air tightness detection device for a hydroelectric generator, aiming to detect and warn the air tightness of the hydroelectric generator.

[0004] To achieve the above-mentioned purpose, the utility model proposes an airtightness detection device for a hydroelectric generator, comprising:

[0005] A detection component, the detection component includes a controller and a pressure sensor, the pressure sensor is electrically connected to the controller, and is used to detect the air pressure in the hydroelectric generator and feed back to the controller;

[0006] an alarm component, the alarm component being electrically connected to the controller to sound an alarm when the air pressure in the hydroelectric generator reaches a critical value;

[0007] The tracer assembly includes a tracer bottle and a connecting tube. The two ends of the connecting tube are respectively used to connect the tracer bottle and the hydroelectric generator. The connecting tube is provided with a piston structure. The tracer bottle stores tracer gas. When the air pressure in the hydroelectric generator decreases, the pressure difference between the tracer bottle and the hydroelectric generator pushes the piston structure to move. The tracer bottle is connected to the hydroelectric generator to allow the tracer gas to enter the hydroelectric generator.

[0008] In one embodiment, a communication portion is formed in the connecting pipe, and the communication portion is arranged around the inner wall of the connecting pipe. When the piston structure moves to the position of the communication portion, the communication portion connects the tracer bottle and the hydroelectric generator.

[0009] In one embodiment, the communication portion is formed with a plurality of annular grooves spaced apart along the axial direction of the connecting pipe, and the annular grooves are connected to each other along the axial direction.

[0010] In one embodiment, the cross section of the communication portion is tapered so that the piston structure can be clamped on the inner wall of the communication portion.

[0011] In one embodiment, the air tightness detection device for a hydroelectric generator further includes a one-way valve, which is provided at one end of the connecting portion close to the tracer bottle, and is used to control the connection and disconnection of the connecting pipe.

[0012] In one embodiment, the tracer gas is one of helium, nitrogen, and argon.

[0013] In one embodiment, the airtightness detection device for a hydroelectric generator further includes a first pressure gauge and a second pressure gauge, wherein the first pressure gauge is connected to the hydroelectric generator, and the second pressure gauge is connected to the tracer bottle.

[0014] In one embodiment, the air tightness detection device for a hydroelectric generator further includes a display screen, and the display screen is electrically connected to the controller.

[0015] In one embodiment, the alarm component includes an audible and visual alarm.

[0016] In one embodiment, the air tightness detection device for a hydroelectric generator further includes a tracer gas detector, and the tracer gas detector is used to detect the position of the tracer gas.

[0017] The technical solution of this utility model uses a detection component to detect the air pressure within the hydroelectric generator. The alarm component is connected to the controller. Once the air pressure reaches a preset critical value, the alarm component immediately activates and sounds an alarm to alert the inspector to take action. In addition, the provision of a tracer bottle and connecting tube enables precise positioning of leaks within the hydroelectric generator. When the air pressure within the hydroelectric generator decreases, the tracer gas in the tracer bottle is introduced into the hydroelectric generator due to the pressure difference, thereby helping inspectors track the specific location of the leak. This allows maintenance personnel to quickly locate the leak and conduct appropriate repairs, reducing downtime of the hydroelectric generator and ensuring its normal operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0019] Figure 1 A schematic structural diagram of an embodiment of an air tightness detection device for a hydroelectric generator provided by the present invention;

[0020] Figure 2 for Figure 1 a cross-sectional view of the middle connecting pipe;

[0021] Figure 3 The present invention is a schematic diagram of the flow of an air tightness detection device for a hydroelectric generator provided by the present invention.

[0022] Description of Figure Numbers:

[0023] 100. Airtightness detection device for a hydroelectric generator; 1. Pressure sensor; 2. Tracer assembly; 21. Tracer bottle; 22. Connecting pipe; 221. Connecting portion; 221a. Annular groove; 23. Piston structure; 3. One-way valve; 4. First pressure gauge; 5. Second pressure gauge; 200. Hydroelectric generator.

[0024] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0027] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] As a clean energy device that converts water energy into electricity, the coordinated operation of its internal mechanical and electrical components is crucial during the operation of a hydroelectric generator. The effective operation of these components depends on a stable and controlled environment, and airtightness is a key factor in ensuring that this environment is not affected by external factors. Sealing devices have become an essential feature of hydroelectric generator sets. Existing sealing solutions for hydroelectric generators only address individual components such as motor bearings, voltmeters, sealing rings, and volutes, without considering the sealing of the entire hydroelectric generator system. When a leak occurs in the hydroelectric generator system, the response time is long, affecting the normal operation of the hydroelectric generator.

[0029] To solve the above problems, please refer to Figures 1 to 3 The utility model proposes an airtightness detection device 100 for a hydroelectric generator 200, comprising a detection component, an alarm component and a tracer component 2. The detection component comprises a controller and a pressure sensor 1. The pressure sensor 1 is electrically connected to the controller and is used to detect the air pressure in the hydroelectric generator 200 and feed back to the controller; the alarm component is electrically connected to the controller to sound an alarm when the air pressure in the hydroelectric generator 200 reaches a critical value; the tracer component 2 comprises a tracer bottle 21 and a connecting pipe 22. The two ends of the connecting pipe 22 are respectively used to connect the tracer bottle 21 and the hydroelectric generator 200. A piston structure 23 is provided in the connecting pipe 22. Tracer gas is stored in the tracer bottle 21. When the air pressure in the hydroelectric generator 200 decreases, a pressure difference is generated between the tracer bottle 21 and the hydroelectric generator 200, which pushes the piston structure 23 to move. The tracer bottle 21 is connected to the hydroelectric generator 200 to allow the tracer gas to enter the hydroelectric generator 200.

[0030] The technical solution of the present invention detects the air pressure within the hydroelectric generator 200 by providing a detection component, and the alarm component is connected to the controller. Once the air pressure reaches a preset critical value, the alarm component will immediately activate and sound an alarm to remind the inspection personnel to take action. In addition, the provision of the tracer bottle 21 and the connecting tube 22 enables the precise positioning of the leak point within the hydroelectric generator 200. When the air pressure within the hydroelectric generator 200 decreases, the tracer gas in the tracer bottle 21 will be introduced into the hydroelectric generator 200 due to the pressure difference, thereby helping the inspection personnel to track the specific location of the leak. This facilitates maintenance personnel to quickly determine the leak location and carry out corresponding maintenance, reducing the downtime of the hydroelectric generator 200 and ensuring the normal operation of the hydroelectric generator 200.

[0031] In an optional embodiment, to facilitate the connection between the tracer bottle 21 and the hydroelectric generator 200, please refer to Figure 1 and Figure 2 A connecting portion 221 is formed in the connecting tube 22. The connecting portion 221 is disposed around the inner wall of the connecting tube 22. When the piston structure 23 moves to the position of the connecting portion 221, the connecting portion 221 connects the tracer bottle 21 with the hydroelectric generator 200. By forming the connecting portion 221 in the connecting tube 22, the movement of the piston structure 23 becomes more flexible. Under normal circumstances, the air pressure within the tracer bottle 21 and the air pressure within the hydroelectric generator 200 remain relatively balanced, and the piston structure 23 remains relatively stationary within the connecting pipe 22. When a leak occurs within the hydroelectric generator 200, the air pressure within the hydroelectric generator 200 decreases, and the air pressure within the tracer bottle 21 becomes greater than that within the hydroelectric generator 200. The tracer gas within the tracer bottle 21 pushes the piston structure 23 toward the end closest to the hydroelectric generator 200. When the piston structure 23 moves to the connecting portion 221, the tracer bottle 21 connects with the hydroelectric generator 200, allowing some of the tracer gas in the tracer bottle 21 to enter the hydroelectric generator 200. After a period of mixing, the tracer gas is evenly distributed within the hydroelectric generator 200, with a small amount of tracer gas escaping through the leak location to the outside. At this point, simply detecting the location of the tracer gas outside the hydroelectric generator 200 can confirm the leak location, allowing operators to promptly address the leak location and minimize downtime of the hydroelectric generator 200. Since it takes a certain amount of time for the operator to arrive at the scene after receiving the alarm signal from the alarm component, the tracer gas can also spread and diverge in the hydroelectric generator 200 during this period of time. In this way, the operator can confirm the leakage location as soon as he arrives at the scene, further reducing the time required to find the leakage location and improving the efficiency of the maintenance of the hydroelectric generator 200.

[0032] Optionally, the tracer gas is one of helium, nitrogen, and argon. To ensure that the air tightness detection device 100 for the hydroelectric generator 200 can adapt to different application scenarios and detection requirements, the flexibility and adaptability of the detection are improved. Selecting an appropriate tracer gas is crucial to improving the accuracy and efficiency of the detection. In this solution, the tracer gas is one of helium, nitrogen, and argon. Since these gases have stable chemical properties and are not easy to react with other substances, they are suitable for various environments and conditions. In addition, these gases are easy to obtain and store, making the operation and maintenance of the detection device more convenient, and also facilitating the protection of the safety and reliability of the air tightness detection device 100 for the hydroelectric generator 200.

[0033] In an optional embodiment, to facilitate leak location detection, the air tightness testing device 100 for the hydroelectric generator 200 also includes a tracer gas detector, which is used to detect the location of tracer gas. The design of the tracer gas detector is crucial to improving detection accuracy. By accurately detecting the location of the tracer gas, the leak point can be quickly located, thereby shortening repair time and reducing downtime losses. Furthermore, the tracer gas detector can work in conjunction with other detection components to achieve a comprehensive assessment of the air tightness of the hydroelectric generator 200, improving the comprehensiveness and effectiveness of the detection.

[0034] In an optional embodiment, in order to realize an alarm during airtightness detection, the alarm component includes an audible and visual alarm. The audible and visual alarm can emit sound and light signals when an abnormal situation is detected to alert the operator. This immediate feedback mechanism ensures that when an airtightness problem occurs, measures can be taken quickly to prevent accidents and ensure the safe operation of the hydroelectric generator 200. The design of the audible and visual alarm takes into account the diversity of the operating environment. In a noisy working environment, the sound alarm may not be enough to attract the attention of the operator, and the addition of the light signal provides another warning method, ensuring that the transmission of the alarm information is not affected by the environmental noise. In addition, the design of the audible and visual alarm also takes into account the visual and auditory habits of the operator. Through different combinations of sound and light signals, different types of alarm information are conveyed, which improves the recognizability and response speed of the alarm system and facilitates the operator to obtain the alarm signal in time for processing.

[0035] In an optional embodiment, to facilitate the connection effect of the connecting portion 221, please refer to Figure 1 and Figure 2The connecting portion 221 is formed with a plurality of annular grooves 221a arranged at intervals along the axial direction of the connecting tube 22, and the annular grooves 221a are connected to each other in the axial direction. By providing a plurality of annular grooves 221a at intervals along the axial direction of the connecting tube 22, more precise control is achieved. The design of these annular grooves 221a allows the piston structure 23 to be connected at different positions. Optionally, through holes or through grooves can be provided on the side walls of two adjacent annular grooves 221a to connect the two, so as to facilitate the passage of tracer gas. In this way, when the piston structure 23 moves to the connecting portion 221, the outer peripheral wall of the piston structure 23 is engaged with the notch of the annular groove 221a, and the tracer gas enters the annular groove 221a from the tracer bottle 21, and moves into the hydroelectric generator 200 through the through holes or through grooves in the groove wall, so as to facilitate the connection between the tracer bottle 21 and the hydroelectric generator 200, thereby ensuring the tracing effect of the tracer assembly 2.

[0036] Further, to prevent the piston structure 23 from being pushed into the hydroelectric generator 200 by the tracer gas, please refer to Figure 1 and Figure 2 , the cross-section of the connecting portion 221 is set to be conical, so that the piston structure 23 can be stuck in the inner wall of the connecting portion 221. The cross-section of the connecting portion 221 is designed to be conical, so that the piston structure 23 can be stuck in the connecting portion 221 after moving a certain distance in the connecting portion 221, so as to prevent the piston structure 23 from continuing to move closer to the hydroelectric generator 200, thereby avoiding the piston structure 23 from continuing to move into the hydroelectric generator 200 and affecting the normal operation of the hydroelectric generator 200. In addition, the conical design also helps to improve the durability of the piston structure 23. During long-term use, the sealing performance of the piston structure 23 may be reduced due to wear. In this way, even if there is some wear on the outer peripheral wall of the piston structure 23, it can still be stuck in the connecting portion 221 to ensure the normal use of the tracer assembly 2.

[0037] In an optional embodiment, in order to maintain a one-way flow of the tracer gas between the tracer bottle 21 and the hydroelectric generator 200, please refer to Figure 1 The airtightness detection device 100 for the hydroelectric generator 200 also includes a one-way valve 3, which is arranged at one end of the connecting portion 221 close to the tracer bottle 21. The one-way valve 3 is used to control the on-off of the connecting pipe 22. The one-way valve 3 is arranged at one end of the connecting portion 221 close to the tracer bottle 21. Its main function is to control the on-off of the connecting pipe 22, ensuring that the tracer gas can only flow in one direction and preventing backflow. The design of the one-way valve 3 is crucial to ensuring the safety and accuracy of the detection process. It avoids the unnecessary pressure that the tracer gas backflow may cause to the tracer bottle 21 or the connecting pipe 22, protects the entire detection system from damage, ensures that the tracer gas flows along the predetermined path, and improves the accuracy of the detection.

[0038] In an optional embodiment, in order to facilitate the installation of the air tightness detection device 100 for the hydroelectric generator 200, the air pressure in the hydroelectric generator 200 and the tracer bottle 21 is kept relatively balanced, please refer to Figure 1 and Figure 3 The air tightness detection device 100 for the hydroelectric generator 200 also includes a first pressure gauge 4 and a second pressure gauge 5. The first pressure gauge 4 is connected to the hydroelectric generator 200, and the second pressure gauge 5 is connected to the tracer bottle 21. This dual pressure gauge design provides intuitive pressure data for the detection process, which helps the operator to understand the air pressure status of the hydroelectric generator 200 and the tracer bottle 21 in real time. During installation, the tracer bottle 21 is inflated and deflated accordingly based on the detection values ​​of the first pressure gauge 4 and the second pressure gauge 5, so that the tracer bottle 21 and the hydroelectric generator 200 are in a relatively balanced state, and the piston structure 23 remains relatively static when the hydroelectric generator 200 is not in a leaking state. In addition, after the installation is completed, by comparing the readings of the first pressure gauge 4 and the second pressure gauge 5, the presence or absence of an air tightness problem and the degree of leakage can also be determined, thereby improving the accuracy and reliability of the detection. The operator can quickly determine whether the air pressure inside the hydroelectric generator 200 is within the normal range by observing the reading of the pressure gauge, which helps to promptly discover and deal with air tightness problems and avoid equipment damage or performance degradation due to abnormal air pressure.

[0039] In an optional embodiment, in order to facilitate the intuitive display of the test results of the airtightness detection device 100 for the hydroelectric generator 200, the airtightness detection device 100 for the hydroelectric generator 200 further includes a display screen, which is electrically connected to the controller and is used to display the test data and system status in real time. The design of the display screen greatly improves the convenience and intuitiveness of the detection process. Optionally, the pressure data of the first pressure gauge 4 and the second pressure gauge 5 can also be displayed on the display screen, so that the operator can quickly obtain the air pressure data inside the hydroelectric generator 200, the pressure data of the tracer gas, and the alarm status of the system, making the detection process more efficient and easy to manage.

[0040] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. An airtightness detection device for a hydroelectric generator, characterized in that: include: A detection component, the detection component includes a controller and a pressure sensor, the pressure sensor is electrically connected to the controller, and is used to detect the air pressure in the hydroelectric generator and feed back to the controller; an alarm component, the alarm component being electrically connected to the controller to sound an alarm when the air pressure in the hydroelectric generator reaches a critical value; The tracer assembly includes a tracer bottle and a connecting tube. The two ends of the connecting tube are respectively used to connect the tracer bottle and the hydroelectric generator. The connecting tube is provided with a piston structure. The tracer bottle stores tracer gas. When the air pressure in the hydroelectric generator decreases, the pressure difference between the tracer bottle and the hydroelectric generator pushes the piston structure to move. The tracer bottle is connected to the hydroelectric generator to allow the tracer gas to enter the hydroelectric generator.

2. The airtightness detection device for a hydroelectric generator according to claim 1, characterized in that: A communication portion is formed in the connecting pipe and is arranged around the inner wall of the connecting pipe. When the piston structure moves to the position of the communication portion, the communication portion connects the tracer bottle and the hydroelectric generator.

3. The airtightness detection device for a hydroelectric generator according to claim 2, characterized in that: The communicating portion is formed with a plurality of annular grooves spaced apart along the axial direction of the connecting pipe, and the annular grooves are connected to each other along the axial direction.

4. The airtightness detection device for a hydroelectric generator according to claim 3, characterized in that: The cross section of the communicating portion is tapered so that the piston structure can be clamped on the inner wall of the communicating portion.

5. The airtightness detection device for a hydroelectric generator according to any one of claims 2 to 4, characterized in that: The air tightness detection device for a hydroelectric generator further comprises a one-way valve, which is arranged at one end of the communication portion close to the tracer bottle, and is used to control the on-off of the connecting pipe.

6. The airtightness detection device for a hydroelectric generator according to claim 5, characterized in that: The tracer gas is one of helium, nitrogen and argon.

7. The airtightness detection device for a hydroelectric generator according to claim 5, characterized in that: The airtightness detection device for a hydroelectric generator further includes a first pressure gauge and a second pressure gauge, wherein the first pressure gauge is connected to the hydroelectric generator, and the second pressure gauge is connected to the tracer bottle.

8. The airtightness detection device for a hydroelectric generator according to claim 5, characterized in that: The air tightness detection device for a hydroelectric generator further includes a display screen, which is electrically connected to the controller.

9. The airtightness detection device for a hydroelectric generator according to claim 5, characterized in that: The alarm component includes an audible and visual alarm.

10. The airtightness detection device for a hydroelectric generator according to claim 5, characterized in that: The air tightness detection device for a hydroelectric generator further comprises a tracer gas detector, and the tracer gas detector is used to detect the position of the tracer gas.

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