Online monitoring structure for heat of main shaft of steam turbine

Abstract

The utility model provides a steam turbine main shaft heat on-line monitoring structure, which is suitable for the technical field of steam turbine main shaft monitoring, and adopts the scheme that the steam turbine main shaft heat on-line monitoring structure comprises a monitoring station, a reciprocating mounting shell, a steam turbine shell, a main shaft main body, a movable plate, a thermal imager main body and an adjusting mounting shell, the upper surface of the monitoring table is fixedly connected with a reciprocating installation shell, one side of the reciprocating installation shell is provided with a steam turbine shell, and the bottom of the steam turbine shell is fixedly connected with the upper surface of the monitoring table. Reciprocating motion of the thermal imager body can be controlled, the height of the thermal imager body is adjusted, the thermal imager does not need to be manually held for a long time to monitor heat of the main shaft body, and the efficiency of steam turbine main shaft heat is improved; the device is also suitable for the field of steam turbine main shaft monitoring.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine main shaft monitoring, in particular to an online heat monitoring structure for a steam turbine main shaft. Background Art

[0002] The main shaft of a steam turbine is a key component in electric power, hydraulic machinery and auxiliary equipment. Its main function is to closely connect the turbine runner with the generator rotor, effectively transmit torque and ensure the stable operation of the entire system. In order to accurately monitor the temperature changes of the main shaft of the steam turbine during operation, we use advanced infrared thermal imagers. This high-tech equipment can capture the heat distribution on the surface of the main shaft in real time, helping us to detect abnormal conditions in time, thereby ensuring the normal operation of the main shaft of the steam turbine and the safe operation of the entire system. Through the monitoring of infrared thermal imagers, we can manage the main shaft of the steam turbine more scientifically and efficiently, and improve the reliability and service life of the equipment.

[0003] When monitoring the heat of a steam turbine main shaft, workers are usually required to hold a handheld infrared thermal imager and accurately aim it at the steam turbine in order to capture and record the heat change data of the main shaft in real time. However, such operation for a long time not only requires workers to maintain a high degree of concentration, but also requires them to stand or move around the steam turbine for a long time, which undoubtedly increases the labor intensity and makes the heat monitoring work inefficient and cumbersome. In addition, long-term handheld operation may also affect the stability of the infrared thermal imager and the accuracy of the data. Therefore, the existing monitoring methods have obvious deficiencies in human resource utilization and monitoring efficiency, and there is an urgent need to seek more efficient and automated solutions.

[0004] Therefore, it is necessary to provide a new online heat monitoring structure for the main shaft of a steam turbine to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a steam turbine main shaft heat online monitoring structure.

[0006] The utility model provides an online monitoring structure for the heat of a steam turbine main shaft, comprising: a monitoring platform, a reciprocating mounting shell, a steam turbine casing, a main shaft body, a movable plate, a thermal imager body and an adjusting mounting shell, wherein the upper surface of the monitoring platform is fixedly connected with the reciprocating mounting shell, a steam turbine casing is arranged on one side of the reciprocating mounting shell, and the bottom of the steam turbine casing is fixedly connected with the upper surface of the monitoring platform, the inner wall of the steam turbine casing is rotatably connected with the main shaft body, a movable plate is slidably mounted inside a rectangular groove at the top of the reciprocating mounting shell, a thermal imager body is placed on the surface of the movable plate, an adjusting mounting shell is arranged above the thermal imager body, and the bottom of the adjusting mounting shell is fixedly connected with the upper surface of the movable plate.

[0007] Starting the reciprocating mechanism on the inner wall of the reciprocating mounting shell drives the moving plate to move back and forth, and drives the thermal imager body to move back and forth, so as to monitor the heat change of the reciprocating mounting shell inside the turbine casing over a large range. The adjusting mechanism inside the mounting shell is rotated to adjust the height of the thermal imager body. There is no need to manually hold the thermal imager body to adjust the position, so that the main shaft body can be thermally monitored, thereby improving the efficiency of the main shaft body thermal monitoring.

[0008] Preferably, a transmission rod is rotatably connected to the inner wall of the adjustment mounting shell, driving blocks are fixedly connected on both sides of the transmission rod, screw rods are symmetrically arranged below the transmission rod, and the screw rods rotate on the inner wall of the adjustment mounting shell, adjustment blocks are fixedly connected on both sides of the thermal imager body, and the threaded surface of the screw rod is meshed with the inner wall of the circular groove of the adjustment block, and the round rod surface of the transmission rod is meshed with the top of the screw rod through a bevel gear.

[0009] Rotate the drive block to drive the transmission rod to rotate on the inner wall of the adjustment mounting shell. The bevel gear on the surface of the transmission rod contacts the bevel gear on the top of the screw rod, driving the screw rod to rotate on the inner wall of the adjustment mounting shell. The threaded surface of the screw rod contacts the inner wall of the circular groove of the adjustment block, driving the thermal imager body to move up and down, thereby adjusting the height of the thermal imager body.

[0010] Preferably, a circular block is fixedly connected to the bottom of the two screw rods.

[0011] When the screw rod rotates on the inner wall of the adjusting installation shell, the circular block rotates along with the inner wall of the adjusting installation shell to limit the screw rod and ensure the stability of the screw rod rotation.

[0012] Preferably, a driving motor is fixedly mounted on the inner wall of the reciprocating mounting shell, the output shaft of the driving motor is fixedly connected to a reciprocating wheel, and the reciprocating wheel rotates on the inner wall of the reciprocating mounting shell, a linkage frame is fixedly connected to the bottom of the movable plate, and the gear teeth on the inner wall of the linkage frame are meshed and connected with the round rod on the top of the reciprocating wheel, guide grooves are symmetrically provided on the inner wall of the rectangular groove at the top of the reciprocating mounting shell, guide blocks are symmetrically fixedly connected to the sides of the linkage frame, and the guide blocks slide on the inner walls of the guide grooves.

[0013] Start the driving motor on the inner wall of the reciprocating mounting shell, and the output shaft of the driving motor drives the reciprocating wheel to rotate. The round rod on the upper surface of the reciprocating wheel contacts the gear teeth on the inner wall of the linkage frame, driving the linkage frame to move back and forth, driving the moving plate to move back and forth, and controlling the reciprocating movement of the thermal imager body. When the linkage frame moves back and forth, the guide block slides along the inner wall of the guide groove to ensure that the linkage frame does not shake when it moves.

[0014] Preferably, the monitoring platform is made of steel plate.

[0015] The steel plate material has very high physical strength. When the monitoring platform supports the reciprocating mounting shell and the turbine casing, the monitoring platform will not be easily deformed. When the surface of the monitoring platform is squeezed or collided, the surface of the monitoring platform will not be easily worn or dented.

[0016] Preferably, semicircular grooves are equidistantly formed on the sides of the two driving blocks.

[0017] The friction force on the side of the driving block is increased, which facilitates the rapid driving of the driving block to rotate and improves the convenience of the driving block.

[0018] Compared with the related art, the steam turbine main shaft heat online monitoring structure provided by the utility model has the following beneficial effects:

[0019] The utility model provides a steam turbine main shaft heat online monitoring structure:

[0020] 1. By installing the monitoring platform, reciprocating mounting shell, turbine housing, main shaft body, moving plate, thermal imager body and adjusting mounting shell, the reciprocating movement of the thermal imager body can be controlled and the height of the thermal imager body can be adjusted. It is no longer necessary to manually hold the thermal imager for a long time to monitor the heat of the main shaft body, thereby improving the heat efficiency of the turbine main shaft.

[0021] 2. A transmission rod is connected to the inner wall of the adjusting installation shell by rotation, and driving blocks are fixedly connected on both sides of the transmission rod. Screw rods are symmetrically arranged below the transmission rod, and the screw rods rotate on the inner wall of the adjusting installation shell. Adjustment blocks are fixedly connected on both sides of the thermal imager body, and the threaded surface of the screw rod is meshed with the inner wall of the circular groove of the adjustment block. The round rod surface of the transmission rod is meshed with the top of the screw rod through a bevel gear. The driving block is rotated to drive the transmission rod to rotate on the inner wall of the adjusting installation shell. The bevel gear on the surface of the transmission rod contacts the bevel gear on the top of the screw rod, driving the screw rod to rotate on the inner wall of the adjusting installation shell. The threaded surface of the screw rod contacts the inner wall of the circular groove of the adjustment block, driving the thermal imager body to move up and down, thereby adjusting the height of the thermal imager body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The overall structural diagram provided by the utility model;

[0023] Figure 2 This is an enlarged schematic diagram of the adjustment installation shell provided by the utility model;

[0024] Figure 3 A schematic cross-sectional view of the adjustment mounting shell provided by the utility model;

[0025] Figure 4 This is a cross-sectional schematic diagram of the reciprocating installation shell provided by the utility model.

[0026] Numbers in the figure: 1. Monitoring station; 2. Reciprocating mounting shell; 3. Turbine housing; 4. Main shaft body; 5. Moving plate; 6. Thermal imager body; 7. Adjustment mounting shell; 8. Transmission rod; 9. Driving block; 10. Screw rod; 11. Adjustment block; 12. Circular block; 13. Driving motor; 14. Reciprocating wheel; 15. Linkage frame; 16. Guide groove; 17. Guide block. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0028] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 The steam turbine main shaft heat online monitoring structure includes: a monitoring platform 1, a reciprocating mounting shell 2, a turbine casing 3, a main shaft body 4, a movable plate 5, a thermal imager body 6 and an adjusting mounting shell 7. The upper surface of the monitoring platform 1 is fixedly connected with the reciprocating mounting shell 2, a turbine casing 3 is arranged on one side of the reciprocating mounting shell 2, and the bottom of the turbine casing 3 is fixedly connected to the upper surface of the monitoring platform 1, the inner wall of the turbine casing 3 is rotatably connected with the main shaft body 4, a movable plate 5 is slidably installed inside the rectangular groove on the top of the reciprocating mounting shell 2, a thermal imager body 6 is placed on the surface of the movable plate 5, an adjusting mounting shell 7 is arranged above the thermal imager body 6, and the bottom of the adjusting mounting shell 7 is fixedly connected to the upper surface of the movable plate 5.

[0029] By starting the reciprocating mechanism on the inner wall of the reciprocating mounting shell 2, the movable plate 5 is driven to reciprocate, and the thermal imager body 6 is driven to reciprocate, so that the heat change of the reciprocating mounting shell 2 inside the turbine casing 3 can be monitored over a large range. The adjusting mechanism inside the mounting shell 7 is rotated to adjust the height of the thermal imager body 6. There is no need to manually hold the thermal imager body 6 to adjust the position, so that the main shaft body 4 is thermally monitored, thereby improving the efficiency of thermal monitoring of the main shaft body 4.

[0030] Embodiment 1:

[0031] In the specific implementation process, Figure 2 and Figure 3 As shown, the inner wall of the adjustment mounting shell 7 is rotatably connected to a transmission rod 8, and driving blocks 9 are fixedly connected to both sides of the transmission rod 8. Screw rods 10 are symmetrically arranged below the transmission rod 8, and the screw rods 10 rotate on the inner wall of the adjustment mounting shell 7. Adjustment blocks 11 are fixedly connected to both sides of the thermal imager body 6, and the threaded surface of the screw rod 10 is meshed with the inner wall of the circular groove of the adjustment block 11, and the round rod surface of the transmission rod 8 is meshed with the top of the screw rod 10 through a bevel gear.

[0032] Rotate the drive block 9 to drive the transmission rod 8 to rotate on the inner wall of the adjustment mounting shell 7. The bevel gear on the surface of the transmission rod 8 contacts the bevel gear on the top of the screw rod 10, driving the screw rod 10 to rotate on the inner wall of the adjustment mounting shell 7. The threaded surface of the screw rod 10 contacts the inner wall of the circular groove of the adjustment block 11, driving the thermal imager body 6 to move up and down to adjust the height of the thermal imager body 6.

[0033] refer to Figure 3 As shown, a circular block 12 is fixedly connected to the bottom of the two screw rods 10 .

[0034] When the screw rod 10 rotates on the inner wall of the adjusting and mounting shell 7 , the circular block 12 rotates along with the inner wall of the adjusting and mounting shell 7 to limit the screw rod 10 and ensure the stability of the rotation of the screw rod 10 .

[0035] refer to Figure 4 As shown, a driving motor 13 is fixedly installed on the inner wall of the reciprocating mounting shell 2, and the output shaft of the driving motor 13 is fixedly connected to a reciprocating wheel 14, and the reciprocating wheel 14 rotates on the inner wall of the reciprocating mounting shell 2, and a linkage frame 15 is fixedly connected to the bottom of the movable plate 5, and the gear teeth on the inner wall of the linkage frame 15 are meshed and connected with the round rod on the top of the reciprocating wheel 14, and guide grooves 16 are symmetrically opened on the inner wall of the rectangular groove at the top of the reciprocating mounting shell 2, and guide blocks 17 are symmetrically fixedly connected to the sides of the linkage frame 15, and the guide blocks 17 slide on the inner wall of the guide groove 16.

[0036] Start the driving motor 13 on the inner wall of the reciprocating mounting shell 2, and the output shaft of the driving motor 13 drives the reciprocating wheel 14 to rotate. The round rod on the upper surface of the reciprocating wheel 14 contacts the gear teeth on the inner wall of the linkage frame 15, driving the linkage frame 15 to move back and forth, driving the moving plate 5 to move back and forth, and controlling the reciprocating movement of the thermal imager body 6. When the linkage frame 15 moves back and forth, the guide block 17 slides along the inner wall of the guide groove 16 to ensure that the linkage frame 15 does not shake when it moves.

[0037] refer to Figure 1 As shown, the monitoring platform 1 is made of steel plate.

[0038] The steel plate material has very high physical strength. When the monitoring platform 1 supports the reciprocating mounting shell 2 and the turbine casing 3, the monitoring platform 1 will not be easily deformed. When the surface of the monitoring platform 1 is squeezed or collided, the surface of the monitoring platform 1 will not be easily worn or dented.

[0039] Embodiment 2:

[0040] refer to Figure 3 As shown, semicircular grooves are equidistantly provided on the sides of the two driving blocks 9 .

[0041] The friction force on the side of the driving block 9 is increased, which facilitates and quickly drives the driving block 9 to rotate, thereby improving the convenience of the driving block 9.

[0042] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A steam turbine main shaft heat online monitoring structure, characterized in that: include: A monitoring platform (1), a reciprocating mounting shell (2), a steam turbine housing (3), a main shaft body (4), a movable plate (5), a thermal imager body (6) and an adjustable mounting shell (7); the upper surface of the monitoring platform (1) is fixedly connected to the reciprocating mounting shell (2); a steam turbine housing (3) is arranged on one side of the reciprocating mounting shell (2); the bottom of the steam turbine housing (3) is fixedly connected to the upper surface of the monitoring platform (1); the inner wall of the steam turbine housing (3) is rotatably connected to the main shaft body (4); a movable plate (5) is slidably mounted inside a rectangular groove at the top of the reciprocating mounting shell (2); a thermal imager body (6) is placed on the surface of the movable plate (5); an adjustable mounting shell (7) is arranged above the thermal imager body (6); and the bottom of the adjustable mounting shell (7) is fixedly connected to the upper surface of the movable plate (5).

2. The steam turbine main shaft heat online monitoring structure according to claim 1 is characterized in that: A transmission rod (8) is rotatably connected to the inner wall of the adjustment mounting shell (7), and drive blocks (9) are fixedly connected to both sides of the transmission rod (8). Screw rods (10) are symmetrically arranged below the transmission rod (8), and the screw rods (10) rotate on the inner wall of the adjustment mounting shell (7). Adjustment blocks (11) are fixedly connected to both sides of the thermal imager body (6), and the threaded surface of the screw rod (10) is meshed with the inner wall of the circular groove of the adjustment block (11).

3. The steam turbine main shaft heat online monitoring structure according to claim 2 is characterized in that: The round rod surface of the transmission rod (8) is meshedly connected with the top of the screw rod (10) via a bevel gear.

4. The steam turbine main shaft heat online monitoring structure according to claim 2 is characterized in that: A circular block (12) is fixedly connected to the bottom of the two screw rods (10).

5. The steam turbine main shaft heat online monitoring structure according to claim 1 is characterized in that: A driving motor (13) is fixedly mounted on the inner wall of the reciprocating mounting shell (2), an output shaft of the driving motor (13) is fixedly connected to a reciprocating wheel (14), and the reciprocating wheel (14) rotates on the inner wall of the reciprocating mounting shell (2), a linkage frame (15) is fixedly connected to the bottom of the movable plate (5), and the gear teeth on the inner wall of the linkage frame (15) are meshedly connected to the round rod on the top of the reciprocating wheel (14), guide grooves (16) are symmetrically opened on the inner wall of the rectangular groove at the top of the reciprocating mounting shell (2), and guide blocks (17) are symmetrically fixedly connected to the side of the linkage frame (15), and the guide blocks (17) slide on the inner wall of the guide groove (16).

6. The steam turbine main shaft heat online monitoring structure according to claim 1 is characterized in that: The monitoring platform (1) is made of steel plate.

7. The steam turbine main shaft heat online monitoring structure according to claim 2 is characterized in that: Semicircular grooves are equidistantly provided on the sides of the two driving blocks (9).

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