Steam turbine vibration monitoring device
By adding clamping structures and erasing boards outside the turbine vibration monitoring device, dust is cleaned, and touch sensors and alarm lights are used to prevent vibration monitoring errors, the problems of dust impact and single function are solved, and more accurate and stable vibration monitoring is achieved.
Patent Information
- Application Number
- CN202421823627.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-30
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-30
AI Technical Summary
The existing turbine vibration monitoring device is susceptible to dust during detection, resulting in errors in monitoring data, and has a single function, so it can only perform vibration monitoring, reducing the practicality of the device.
A steam turbine vibration monitoring device is designed to clean up dust outside the shaft by adding clamping structures and erasing plates outside the detection device; at the same time, a touch sensor is used to prevent vibration monitoring errors caused by dust, and the vibration amplitude is indicated by the alarm light; through the air pressure rod and U-tube structure, the amplitude of the turbine is intuitively judged.
It effectively avoids the influence of dust, extends the service life of the turbine shaft, and prompts the vibration too much through the alarm light to avoid damage; at the same time, the amplitude is intuitively judged, which improves the accuracy and stability of monitoring.
Smart Images
Figure CN222812465U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of steam turbine monitoring, in particular to a steam turbine vibration monitoring device. Background Art
[0002] A steam turbine is a rotary power machine that converts the energy of steam into mechanical work. It consists of a series of blades and rotors. After steam enters the steam turbine, it drives the blades to rotate, thereby driving the rotor to rotate. Steam turbines have the advantages of high efficiency, high power, and stable operation. In modern industry, especially in the field of power generation, they play a vital role. For example, in large thermal power plants, steam turbines are one of the core equipment, converting the energy of high-temperature and high-pressure steam into electrical energy. In the daily use of steam turbines, it is generally necessary to use a steam turbine vibration detection device to monitor the vibration of the turbine bearings.
[0003] A steam turbine vibration detection device is usually composed of a sensor, a signal conditioner, and a data acquisition and analysis system. The sensor is generally installed at key locations of the steam turbine, such as the bearing seat, to sense vibration signals. The signal conditioner amplifies and filters the weak signals collected by the sensor to make them suitable for transmission and analysis. The data acquisition and analysis system receives the processed signals and performs analysis and calculations through algorithms and models. The principle is based on vibration theory, and the operating status of the steam turbine is determined by detecting parameters such as the frequency, amplitude, and phase of the vibration. For example, when the vibration amplitude exceeds the set threshold, it indicates that there may be a fault, so that timely measures can be taken to ensure the safe and stable operation of the steam turbine.
[0004] When the existing steam turbine vibration monitoring device is used to detect the steam turbine of the power plant, due to the working environment of the ignition plant, dust will accumulate inside the bearing, which will cause the dust to affect the monitoring data when the steam turbine is monitored for vibration, thereby causing monitoring errors; and the existing steam turbine vibration monitoring device has a single function and can only monitor the vibration of the steam turbine, thereby reducing the practicality of the steam turbine vibration monitoring device. Therefore, a steam turbine vibration monitoring device is proposed to address the above problems. Utility Model Content
[0005] In order to make up for the deficiencies of the prior art and address the problems existing in the prior art equipment, the utility model proposes a steam turbine vibration monitoring device.
[0006] The utility model solves the technical problem by adopting a technical solution that is a steam turbine vibration monitoring device, comprising a steam turbine body, the top of which is provided with an air inlet; one side of the steam turbine body is provided with an observation window; the steam turbine body is internally connected with a rotating shaft, the rotating shaft is externally connected with a fuselage, the fuselage is internally provided with a circular through hole, four groups of clamping plates are internally provided with the circular through hole inside the fuselage, and the top of the clamping plates is connected with a wiping plate; two groups of gas pressure rods are provided on both sides of the bottom ends of the clamping plates, the bottom ends of the gas pressure rods are connected with a gas blocking film, the bottom ends of the gas blocking film are connected with a U-shaped tube, the port at the other end of the U-shaped tube is connected with a glass slide, the glass slide is internally provided with a hole, a traction rope is internally provided with the hole of the glass slide, and the bottom end of the traction rope is connected with a piston; the structure assists in clamping the steam turbine so that the steam turbine has better stability, and the structure cleans the dust on the surface of the steam turbine rotating shaft, and the stability of the steam turbine is judged by observing the piston inside the glass slide.
[0007] Preferably, a circular through hole is opened inside the center of the splint, a touch sensor is arranged inside the circular through hole inside the center of the splint, a connecting wire is arranged at the bottom end of the touch sensor, and the other end of the connecting wire is connected to an alarm light; the bottom end of the touch sensor is fixedly connected to the circular through hole inside the fuselage; the alarm light passes through the top of the fuselage and is placed outside the fuselage; and by using a touch sensor with model ML100-8-H-350-RT to perform an alarm when the vibration is too large, damage to the device caused by excessive vibration can be avoided.
[0008] Preferably, the U-shaped tube passes through the fuselage and is fixedly connected to the glass slide, and the glass slide is placed outside the fuselage; a sealing liquid is provided inside the U-shaped tube, and the water level of the sealing liquid inside the U-shaped tube is higher than the bend at the bottom end of the U-shaped tube; the bottom end of the air pressure rod and the circular perforated outer wall inside the fuselage are relatively sealed; a scale is provided on the outer wall of the glass slide; the position of the piston is higher than the mouth of the U-shaped tube; with this structure, the air pressure inside the U-shaped tube lifts or pulls the piston, and the traction rope is used to prevent the piston from shifting, thereby increasing the stability and firmness of the device operation.
[0009] The utility model is beneficial in that:
[0010] The utility model is designed to add a clamping structure on the outside of the detection device, so that the dust on the outside of the rotating shaft can be cleaned by the external wiper plate thereof, and the error in vibration monitoring caused by dust can be prevented by placing the touch sensor inside the wiper plate, and the dust can be cleaned by the external wiper plate thereof, thereby extending the service life of the rotating shaft of the steam turbine; and the alarm light can be used to promptly remind the operator that the vibration amplitude of the steam turbine is too large, so as to avoid the damage of the steam turbine due to the excessive vibration; and the design of adding a U-shaped tube at the bottom of the pneumatic rod can intuitively judge the amplitude of the steam turbine at that time by pushing and pulling the piston by air pressure. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
[0012] Figure 1 It is a schematic diagram of the device location structure;
[0013] Figure 2 It is a schematic diagram of the overall structure of the device;
[0014] Figure 3 is a schematic diagram of the clamping structure;
[0015] Figure 4 This is a schematic diagram of the amplitude monitoring structure;
[0016] Figure 5 This is a schematic diagram of the alarm structure;
[0017] Figure 6 Schematic diagram of the bottom structure of the amplitude monitoring structure
[0018] In the figure: 1. Steam turbine body; 2. Observation window; 3. Air inlet; 4. Rotating shaft; 5. Fuselage; 6. Glass slide; 7. Warning light; 8. Clamp; 9. Wipe board; 10. Connecting wire; 11. Touch sensor; 12. Gas pressure rod; 13. U-shaped tube; 14. Towing rope; 15. Piston; 16. Scale; 17. Air barrier film. DETAILED DESCRIPTION
[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0020] See also Figure 1-6As shown, a steam turbine vibration monitoring device comprises a steam turbine body 1, wherein an air inlet 3 is provided at the top of the steam turbine body 1; an observation window 2 is provided on one side of the steam turbine body 1; a rotating shaft 4 is connected to the inside of the steam turbine body 1, and the rotating shaft 4 is connected to the outside of a fuselage 5, wherein a circular through hole is provided inside the fuselage 5, and four groups of clamping plates 8 are provided inside the circular through hole inside the fuselage 5, and a wiping plate 9 is connected to the top of the clamping plate 8; two groups of gas pressure rods 12 are provided on both sides of the bottom end of the clamping plate 8, and a gas blocking film 17 is connected to the bottom end of the gas pressure rod 12, and the gas blocking film 17 is provided on the bottom end of the gas pressure rod 12. The bottom end of the membrane 17 is connected to a U-shaped tube 13, and the port at the other end of the U-shaped tube 13 is connected to the glass run 6. The glass run 6 has a hole inside, and a traction rope 14 is arranged inside the hole of the glass run 6. The bottom end of the traction rope 14 is connected to a piston 15; the U-shaped tube 13 passes through the fuselage 5 and is fixedly connected to the glass run 6, and the glass run 6 is placed outside the fuselage 5; the U-shaped tube 13 is provided with a sealing liquid inside, and the water level of the sealing liquid inside the U-shaped tube 13 is higher than the turning point at the bottom end of the U-shaped tube 13; when monitoring the amplitude of the steam turbine At this time, the turbine body 1 starts to start, and the gas enters the turbine body 1 from the air inlet 3. During this period, the internal working conditions of the turbine can be observed through the observation window 2. Only when the gas drives the shaft 4 to rotate, the wiping plate 9 outside the shaft 4 starts to rub the surface of the shaft 4, thereby cleaning the dust outside the shaft 4. At this time, the vibration generated by the operation of the body will push the clamping plate 8, and the internal air pressure of the gas pressure rod 12 at the bottom of the clamping plate 8 will change. At this time, the air pressure inside the gas pressure rod 12 will push the gas barrier film 17 at its bottom, and the gas barrier film 17 will push the U-shaped tube The gas inside the U-shaped tube 13 pushes the sealing liquid inside it, so that the sealing liquid pushes the gas at the other end along the other end of the U-shaped tube 13 into the glass run 6. When the gas enters the glass run 6, the gas pushes the piston 15 to move upward. During this period, the piston 15 is pulled by the traction rope 14 so that it will not deviate. Finally, the operator observes the position change between the scale 16 outside the glass run 6 and the piston 15 to determine the movement status of the turbine, thereby completing the vibration monitoring operation of the turbine.
[0021] A circular through hole is formed in the center of the clamping plate 8, and a touch sensor 11 is arranged in the circular through hole in the center of the clamping plate 8. A connecting line 10 is arranged at the bottom of the touch sensor 11, and the other end of the connecting line 10 is connected to the alarm light 7. The bottom end of the touch sensor 11 is fixedly connected to the circular through hole in the fuselage 5. The alarm light 7 passes through the top of the fuselage 5 and is placed outside the fuselage 5. The bottom end of the gas pressure rod 12 is relatively sealed with the outer wall of the circular through hole in the fuselage 5. The outer wall of the glass slide 6 is provided with a scale 16. The position of the piston 15 is It is placed higher than the pipe mouth of the U-shaped tube 13; when the steam turbine vibrates violently, the rotating shaft 4 will push the clamping plates 8 around it to displace the clamping plates 8. When the vibration amplitude is too large, the touch sensor 11 inside the clamping plate 8 will gradually move up and eventually touch the wiping plate 9 at its top. When the touch sensor 11 touches the wiping plate 9, the touch sensor 11 will transmit the signal to the connecting line 10, and finally turn on the alarm light 7 to notify the operator that the current vibration amplitude of the steam turbine is too large, thereby avoiding damage to the steam turbine caused by excessive vibration amplitude.
[0022] Working principle: when the amplitude of the steam turbine is monitored, the steam turbine body 1 starts to start, and the gas enters the steam turbine body 1 from the air inlet 3. During this period, the internal working conditions of the steam turbine can be observed through the observation window 2. Only when the gas drives the shaft 4 to rotate, the wiping plate 9 outside the shaft 4 starts to rub the surface of the shaft 4, thereby cleaning the dust outside the shaft 4. At this time, the vibration generated by the operation of the machine body will push the splint 8, and the internal air pressure of the pneumatic rod 12 at the bottom of the splint 8 will change. At this time, the air pressure inside the pneumatic rod 12 will push the gas barrier film 17 at its bottom, and the gas barrier film 17 will push the gas inside the U-shaped tube 13, and the gas inside the U-shaped tube 13 will push the sealing liquid inside it, so that the sealing liquid pushes the gas at the other end along the other end of the U-shaped tube 13 into the glass run 6. When the gas enters the glass run 6 After the part is moved, the gas will push the piston 15 to move upward. During this period, the piston 15 will be pulled by the traction rope 14 to prevent it from deflecting. Finally, the operator observes the position change between the scale 16 outside the glass slide 6 and the piston 15 to judge the movement status of the steam turbine, thereby completing the vibration monitoring operation of the steam turbine; when the steam turbine vibrates violently, the rotating shaft 4 will push the clamping plates 8 around it to displace the clamping plates 8. When the vibration amplitude is too large, the touch sensor 11 inside the clamping plate 8 will gradually move up and eventually touch the wiper plate 9 at its top. When the touch sensor 11 touches the wiper plate 9, the touch sensor 11 will transmit the signal to the connecting line 10, and finally the alarm light 7 will be turned on to notify the operator that the current vibration amplitude of the steam turbine is too large, thereby avoiding damage to the steam turbine caused by excessive vibration amplitude.
[0023] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
[0024] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.
Claims
1. A steam turbine vibration monitoring device, characterized in that: The invention comprises a steam turbine body (1), wherein an air inlet (3) is provided at the top of the steam turbine body (1); an observation window (2) is provided at one side of the steam turbine body (1); a rotating shaft (4) is connected to the inside of the steam turbine body (1), and the rotating shaft (4) is connected to the outside of a fuselage (5); a circular through hole is provided inside the fuselage (5), and four groups of clamping plates (8) are provided inside the circular through hole inside the fuselage (5), and a wiper plate (9) is connected to the top of the clamping plate (8); Two groups of pneumatic rods (12) are provided on both sides of the bottom end of the clamping plate (8), the bottom ends of the pneumatic rods (12) are connected to a gas barrier film (17), the bottom end of the gas barrier film (17) is connected to a U-shaped tube (13), the other end of the U-shaped tube (13) is connected to a glass slide groove (6), a hole is provided inside the glass slide groove (6), a traction rope (14) is provided inside the hole of the glass slide groove (6), and the bottom end of the traction rope (14) is connected to a piston (15).
2. A steam turbine vibration monitoring device according to claim 1, characterized in that: A circular through hole is formed in the center of the clamping plate (8), a touch sensor (11) is arranged in the circular through hole in the center of the clamping plate (8), a connecting line (10) is arranged at the bottom end of the touch sensor (11), and the other end of the connecting line (10) is connected to the alarm light (7).
3. A steam turbine vibration monitoring device according to claim 2, characterized in that: The bottom end of the touch sensor (11) is fixedly connected to the circular through-hole inside the fuselage (5); and the alarm light (7) passes through the top end of the fuselage (5) and is placed outside the fuselage (5).
4. A steam turbine vibration monitoring device according to claim 1, characterized in that: The U-shaped tube (13) passes through the fuselage (5) and is fixedly connected to the glass slide groove (6), and the glass slide groove (6) is placed outside the fuselage (5); a sealing liquid is provided inside the U-shaped tube (13), and the water level of the sealing liquid inside the U-shaped tube (13) is higher than the turning point at the bottom end of the U-shaped tube (13).
5. A steam turbine vibration monitoring device according to claim 1, characterized in that: The bottom end of the gas pressure rod (12) and the circular perforated outer wall inside the fuselage (5) are relatively sealed.
6. A steam turbine vibration monitoring device according to claim 1, characterized in that: The outer wall of the glass slide (6) is provided with a scale (16); the position of the piston (15) is higher than the pipe mouth of the U-shaped tube (13).