A pumped storage power station unit monitoring device

Abstract

The utility model provides a pumped storage power station unit monitoring devices relates to the technical field of hydropower station equipment monitoring, include: bearing seat, main shaft, the inner wall of bearing seat is rotated and is penetrated to the main shaft, base frame, base frame fixed connection is in the upper surface of bearing seat, clamping mechanism, clamping mechanism includes two groups of clamping components and linkage component, two groups of clamping components all include L-shaped lifting plate, connecting block, T -shaped slot, through -hole, plug -in rod, resist plate, spring and frame board, frame board fixed connection is in the surface of base frame, T -shaped slot is established in the surface of frame board, L-shaped lifting plate sliding connection is in the inner wall of T -shaped slot, connecting block fixed connection is in the lower end of L-shaped lifting plate, solved the maintenance and need to knock or cutting caused by time -consuming and labor -intensive and equipment damage risk, significantly improved the maintainability and on -the -spot repair efficiency of sensor.

Description

Technical Field

[0001] This utility model relates to the field of hydropower station equipment monitoring technology, and in particular to a monitoring device for pumped storage power station units. Background Technology

[0002] Pumped storage power station unit monitoring devices are used to collect real-time operating parameters such as spindle vibration, sway, and temperature to ensure the safe and stable operation of the unit. In traditional installation methods, sensors are usually directly fixed to the bearing housing or frame with bolts, relying on threaded connections to achieve rigid installation. This method is simple in structure and widely used.

[0003] However, the unit operates in a humid environment, and after long-term use, the fixing bolts are prone to rust, oxidation or seizing, making it difficult to disassemble the sensor. Maintenance requires the use of forced methods such as knocking and cutting, which is not only time-consuming and labor-intensive, but may also damage the sensor or the mounting base.

[0004] Therefore, it is necessary to provide a monitoring device for pumped storage power station units to solve the above problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a monitoring device for pumped storage power station units.

[0006] This utility model provides a monitoring device for pumped storage power station units, comprising:

[0007] Bearing housing;

[0008] The main shaft rotates through the inner wall of the bearing housing;

[0009] A base frame is fixedly connected to the upper surface of the bearing seat, and a sensor is provided on the surface of the base frame;

[0010] The locking mechanism includes two sets of locking components and a linkage component. Each set of locking components includes an L-shaped lifting plate, a connecting block, a T-shaped groove, a through hole, a rod, a stop plate, a spring, and a frame plate. The frame plate is fixedly connected to the surface of the base frame. The T-shaped groove is formed on the surface of the frame plate. The L-shaped lifting plate is slidably connected to the inner wall of the T-shaped groove. The connecting block is fixedly connected to the lower end of the L-shaped lifting plate. The through hole is formed on the surfaces of the connecting block and the frame plate. The rod is slidably connected to the inner wall of the through hole. The stop plate is fixedly connected to the circumferential surface of the rod. The spring is sleeved on the circumferential surface of the rod. One end of the spring is fixedly connected to the surface of the stop plate, and the other end of the spring is fixedly connected to the inner wall of the through hole. The linkage component is used to control the movement of the rod.

[0011] Preferably, the linkage assembly includes a connecting plate and a handle, with the two ends of the connecting plate fixedly connected to one end of each of the two insert rods, and the handle fixedly connected to the surface of the connecting plate.

[0012] Preferably, one end of both of the inserts is an arc surface.

[0013] Preferably, the two sets of snap-fit ​​components are located symmetrically on both sides of the base frame.

[0014] Preferably, the horizontal section of the L-shaped lifting plate is located above the sensor.

[0015] Compared with related technologies, the pumped storage power station unit monitoring device provided by this utility model has the following beneficial effects:

[0016] 1. This utility model completely eliminates the traditional bolt fixing method by setting a sliding L-shaped lifting plate and a linkage rod locking structure, avoiding the problem of bolt corrosion and seizing after long-term operation of the sensor in a humid environment. It allows for quick disassembly and assembly without the need for destructive means such as hammering or cutting during maintenance, which significantly improves maintenance efficiency and reduces maintenance difficulty and equipment damage risk.

[0017] 2. The device adopts an automatic locking mechanism with spring preload and handle linkage, combined with arc-shaped guide design and symmetrically arranged snap-fit ​​components, to ensure the stability and repeatability of sensor installation. At the same time, it is easy to operate and requires no tools, effectively improving the reliability of the monitoring system and the convenience of on-site operation and maintenance. Attached Figure Description

[0018] Figure 1 A first-view perspective perspective view provided for this utility model;

[0019] Figure 2 A partial exploded view provided for this utility model;

[0020] Figure 3 A partial sectional view provided for this utility model;

[0021] Figure 4 This is a partial schematic diagram of the present invention.

[0022] The following are the labels in the diagram: 1. Base frame; 201. L-shaped lifting plate; 202. Connecting block; 203. T-slot; 204. Through hole; 205. Insert rod; 206. Support plate; 207. Spring; 208. Frame plate; 301. Connecting plate; 302. Handle; 4. Bearing seat; 5. Main shaft. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please refer to the following: Figures 1 to 4 A monitoring device for pumped storage power station units, comprising:

[0025] Bearing housing 4;

[0026] Main spindle 5 rotates through the inner wall of bearing housing 4;

[0027] The base frame 1 is fixedly connected to the upper surface of the bearing seat 4, and a sensor is provided on the surface of the base frame 1;

[0028] The locking mechanism includes two sets of locking components and a linkage component. Each set of locking components includes an L-shaped lifting plate 201, a connecting block 202, a T-shaped groove 203, a through hole 204, a plug rod 205, a stop plate 206, a spring 207, and a side plate 208. The side plate 208 is fixedly connected to the surface of the base frame 1. The T-shaped groove 203 is formed on the surface of the side plate 208. The L-shaped lifting plate 201 is slidably connected to the inner wall of the T-shaped groove 203. The connecting block 202 is fixedly connected to the L-shaped lifting plate 201. At the lower end of the lifting plate 201, a through hole 204 is formed on the surface of the connecting block 202 and the frame plate 208. The insertion rod 205 is slidably connected to the inner wall of the through hole 204. The abutment plate 206 is fixedly connected to the circumferential surface of the insertion rod 205. The spring 207 is sleeved on the circumferential surface of the insertion rod 205. One end of the spring 207 is fixedly connected to the surface of the abutment plate 206, and the other end of the spring 207 is fixedly connected to the inner wall of the through hole 204. The linkage assembly is used to control the movement of the insertion rod 205.

[0029] In the specific implementation process, when the sensor needs maintenance, the two insertion rods 205 are slid in the through hole 204 through the linkage component. At this time, the insertion rods 205 and the abutment plate 206 will overcome the elastic force of the spring 207 and move to one side until the insertion rods 205 are completely pulled out of the through hole 204 of the connecting block 202. At this time, the L-shaped lifting plate 201 is unlocked and can slide upward along the T-shaped groove 203 on the frame plate 208 to remove the sensor and the L-shaped lifting plate 201 together, realizing quick disassembly. After maintenance, the sensor is placed back on the base frame 1, the L-shaped lifting plate 201 is reinserted into the T-shaped groove 203, and the handle 302 is released. The spring 207 resets and pushes the insertion rods 205 to pass through the connecting block 202 again, realizing automatic locking. The whole process does not require the use of tools, avoiding the problem of traditional bolts rusting and causing disassembly difficulties, and improving maintenance efficiency.

[0030] It should be further explained that the spring 207 maintains a certain amount of compression after the insertion rod 205 is inserted into the through hole 204, forming a reliable self-locking structure; the sensor is a vibration acceleration sensor, specifically a piezoelectric triaxial accelerometer, which is installed on the base frame (1) and faces the radial direction of the main shaft (5) to collect the vibration acceleration signal of the main shaft (5) in real time during operation. Its monitoring object is the radial vibration and axial oscillation of the main shaft (5) caused by factors such as imbalance, misalignment, bearing wear or hydraulic excitation; when the unit is running, the sensor will transmit the collected vibration data to the monitoring system through wired or wireless means. The system will analyze and judge according to the preset vibration threshold: if the vibration amplitude is in the range of 0–4.5 mm / s, it is judged to be in normal operation; if the amplitude is continuously between 4.5–7.1 mm / s, the system will issue a warning signal, indicating that there may be slight misalignment or early bearing wear; if the amplitude exceeds 7.1 mm / s, it is judged to be a serious fault.

[0031] refer to Figures 1 to 4 As shown, the linkage assembly includes a connecting plate 301 and a handle 302. The two ends of the connecting plate 301 are respectively fixedly connected to one end of the two insert rods 205, and the handle 302 is fixedly connected to the surface of the connecting plate 301.

[0032] In the above embodiments, during disassembly or installation, pulling the handle 302 can simultaneously drive the two plug rods 205 to move synchronously. Since the connecting plate 301 fixes the two plug rods 205 together, it ensures that the action of the two-sided snap-fit ​​components is consistent, avoiding the situation of one-sided jamming or uneven force, making the operation smoother and effectively improving the stability and reliability of the device. At the same time, the design of the handle 302 is convenient for manual operation, saving time and effort.

[0033] refer to Figures 1 to 4 As shown, one end of both insertion rods 205 is curved.

[0034] In the above embodiment, since one end of the two insertion rods 205 is designed as an arc surface, when inserted into the through hole 204 of the connecting block 202, the arc-shaped end face can form a smooth transition with the edge of the connecting block 202, guiding the insertion rod 205 smoothly into the hole. Even if there is a slight alignment deviation, it can be automatically corrected, reducing the jamming phenomenon during insertion and removal, improving installation efficiency and ease of operation, and is particularly suitable for on-site environments with limited space or poor visibility.

[0035] refer to Figures 1 to 4 As shown, the two sets of snap-fit ​​components are located symmetrically on both sides of the base frame 1.

[0036] In the above embodiment, the two sets of snap-fit ​​components are symmetrically arranged on both sides of the base frame 1, so that the sensor is subjected to uniform force when fixed, avoiding tilting or loosening caused by force on one side, ensuring the stability of sensor installation and measurement accuracy. At the same time, the symmetrical structure is conducive to the balanced transmission of force and enhances the rigidity of the overall structure.

[0037] refer to Figures 1 to 4 As shown, the horizontal section of the L-shaped lifting plate 201 is located above the sensor.

[0038] In the above embodiment, the horizontal section of the L-shaped lifting plate 201 is located above the sensor. After the insertion rod 205 passes through the connecting block 202 and completes the locking, the horizontal section of the L-shaped lifting plate 201 can press the sensor from above to prevent it from jumping or shifting due to vibration during unit operation. This ensures that the sensor is always in close contact with the mounting surface, improving the stability of signal acquisition. At the same time, the structure is simple and reliable, and no other parts need to be disassembled during disassembly and assembly, further improving the convenience of maintenance.

[0039] The working principle of the pumped storage power station unit monitoring device provided by this utility model is as follows:

[0040] First, the bearing housing (4) is a key structural component supporting the main shaft in the unit. The main shaft (5) is the core rotating shaft of the pumped storage unit, which is prone to vibration and sway during operation. The sensor is installed on the base frame (1) to monitor the vibration, radial displacement and other parameters of the main shaft (5) in real time to ensure the safe and stable operation of the unit. When in use, the sensor is placed on the base frame 1, and the L-shaped lifting plates 201 on both sides are inserted downward along the T-shaped grooves 203 on the side plate 208. When the connecting block 202 is aligned with the insertion rod 205, When the handle 302 is released, the spring 207 releases its elastic force, pushing the abutment plate 206 and the insertion rod 205 to automatically reset, allowing the insertion rod 205 to pass through the through hole 204 and lock the connecting block 202, thereby fixing the L-shaped lifting plate 201. Its horizontal section presses down on the sensor, enabling quick installation. For disassembly, simply pull the handle 302, moving the connecting plate 301 so that the two insertion rods 205 retract synchronously, disengaging from the connecting block 202. The L-shaped lifting plate 201 and the sensor can then be removed upwards. The entire process requires no tools and is simple and quick to operate. This structure completely avoids the problem of traditional bolts easily rusting and seizing after long-term use in humid environments, leading to difficult disassembly. It also solves the time-consuming and labor-intensive nature of maintenance requiring hammering or cutting, as well as the risk of equipment damage, significantly improving the maintainability of the sensor and the efficiency of on-site repair.

[0041] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A monitoring device for pumped storage power station units, characterized in that, include: Bearing housing (4); The main shaft (5) rotates through the inner wall of the bearing housing (4); A base frame (1) is fixedly connected to the upper surface of the bearing seat (4), and a sensor is provided on the surface of the base frame (1). The locking mechanism includes two sets of locking components and a linkage component. Each set of locking components includes an L-shaped lifting plate (201), a connecting block (202), a T-shaped groove (203), a through hole (204), a plug rod (205), a stop plate (206), a spring (207), and a frame plate (208). The frame plate (208) is fixedly connected to the surface of the base frame (1). The T-shaped groove (203) is formed on the surface of the frame plate (208). The L-shaped lifting plate (201) is slidably connected to the inner wall of the T-shaped groove (203). The connecting block (202) is fixedly connected to the L-shaped lifting plate (201). At the lower end of the lifting plate (201), the through hole (204) is opened on the surface of the connecting block (202) and the frame plate (208). The insertion rod (205) is slidably connected to the inner wall of the through hole (204). The abutment plate (206) is fixedly connected to the circumferential surface of the insertion rod (205). The spring (207) is sleeved on the circumferential surface of the insertion rod (205). One end of the spring (207) is fixedly connected to the surface of the abutment plate (206), and the other end of the spring (207) is fixedly connected to the inner wall of the through hole (204). The linkage assembly is used to control the movement of the insertion rod (205).

2. The pumped storage power station unit monitoring device according to claim 1, characterized in that, The linkage assembly includes a connecting plate (301) and a handle (302). The two ends of the connecting plate (301) are respectively fixedly connected to one end of two insert rods (205), and the handle (302) is fixedly connected to the surface of the connecting plate (301).

3. The pumped storage power station unit monitoring device according to claim 1, characterized in that, Both of the aforementioned inserts (205) have an arc-shaped end.

4. The pumped storage power station unit monitoring device according to claim 2, characterized in that, The two sets of snap-fit ​​components are located symmetrically on both sides of the base frame (1).

5. A monitoring device for pumped storage power station units according to claim 2, characterized in that, The horizontal section of the L-shaped lifting plate (201) is located above the sensor.

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