A 330mw condensing steam turbine high and intermediate pressure module transportation and inspection device

Abstract

This invention discloses a transportation and inspection device for a 330MW condensing steam turbine high-pressure and intermediate-pressure module, comprising a transport ring and an inspection ring. The transport ring is fixedly installed to the front and rear ends of the cylinder using bolts. The inner surface of the transport ring engages with the rotor to fix the radial relative position of the rotor, and the inner side of the transport ring engages with the rotor shaft shoulder to fix the axial position of the rotor. The inspection ring is fixedly installed to the front and rear ends of the cylinder using bolts. The inspection ring uses a detection mechanism that, along with axial and radial detection parts on the rotor, detects the radial and axial positions of the rotor, thereby fixing the relative positions of the rotating and stationary components of the high-pressure and intermediate-pressure module and ensuring that the relative positions remain unchanged during transportation. Upon arrival at the site, the axial and radial relative positions of the rotating and stationary components are checked, ensuring the relative positions of the moving and stationary components are maintained during the transportation and on-site installation of the high-pressure and intermediate-pressure module.

Description

Technical Field

[0001] This invention relates to the field of steam turbine technology, specifically a transportation and inspection device for the high and medium pressure modules of a 330MW condensing steam turbine. Background Technology

[0002] Currently, the installation of equipment in thermal power plants, from delivery to installation, is all done in parts, requiring excessive manpower and resources. Civil engineering and installation cannot be carried out concurrently, leading to an increased construction period. Furthermore, the varying skill levels of installation teams cannot guarantee safe and efficient flow control.

[0003] The 300MW steam turbine is one of the three major components of a power plant, and it is essential to realize the modular transportation and installation.

[0004] Existing technologies require transporting components to the site for assembly, increasing on-site workload and installation cycle. Meanwhile, installation quality is limited by the technical level of on-site installers, and repeated use of overhead cranes increases the risks on the construction site.

[0005] The issue of the clearance between the shipment and inspection of the 330MW steam turbine high-pressure and intermediate-pressure modules is: to fix the relative positions of the rotating and stationary parts of the high-pressure and intermediate-pressure modules, while ensuring that the relative positions remain unchanged during transportation; and to check the axial and radial relative positions of the rotating and stationary parts after arrival at the site.

[0006] Therefore, a transportation and inspection device for the high- and intermediate-pressure modules of a 330MW condensing steam turbine is proposed. The design and installation position of the transportation ring and inspection ring are studied to ensure the relative positions of dynamic and static components during transportation of the high- and intermediate-pressure modules and on-site installation. Summary of the Invention

[0007] The purpose of this invention is to provide a transportation and inspection device for the high- and intermediate-pressure modules of a 330MW condensing steam turbine, so as to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A transport and inspection device for a 330MW condensing steam turbine high-pressure module includes a cylinder. A rotor is located inside the cylinder, and a steam seal is installed between the cylinder's inner wall and the rotor. Transport rings are symmetrically arranged on both sides of the cylinder. A clamping part is located on the rotor corresponding to the bottom of the transport ring. The bottom of the transport ring corresponds to and is fitted with the clamping part. A fixing bolt passes through the transport ring, and the transport ring is fixedly installed on the cylinder by the fixing bolt. Inspection rings are also located on both sides of the cylinder, and fixing bolts also pass through the inspection rings. The inspection rings are fixedly installed on the cylinder by the fixing bolts. A detection mechanism is provided on the inspection ring, and an axial detection part and a radial detection part are provided on the rotor corresponding to the detection mechanism.

[0010] As a further embodiment of the present invention: the detection mechanism includes a fixed frame, an axial detection component and a radial detection component, the fixed frame is fixedly installed on the inspection ring, and the bottom of the fixed frame is provided with an extension plate.

[0011] As a further embodiment of the present invention: the axial detection component includes a movable sleeve, which is embedded in an extension plate. An avoidance notch is provided on the top of the movable sleeve on the extension plate. A gear is provided in the avoidance notch. The gear is rotatably mounted to the inner wall of the avoidance notch via a rotating shaft. A torsion spring is sleeved on the outer side of the rotating shaft. The two ends of the torsion spring are fixedly connected to the outer wall of the gear and the inner wall of the avoidance notch, respectively.

[0012] As a further embodiment of the present invention: a detection pin adapted to the movable sleeve is slidably connected inside the sleeve, the top surface of the detection pin is provided with a rack portion adapted to the gear, and one end of the detection pin is provided with a limiting piece.

[0013] As a further embodiment of the present invention: the radial detection component includes a sliding seat, an extension plate having a groove, the sliding seat being slidably connected in the groove, a hand-tightening bolt being threadedly connected to the sliding seat, the hand-tightening bolt passing through the sliding seat and abutting against the inner wall of the groove, and a threaded hole for threaded connection of the hand-tightening bolt being provided on the sliding seat.

[0014] As a further embodiment of the present invention: a first pointer is fixedly connected to one side of the sliding seat, and a scale line adapted to the sliding groove is provided at the end of the extension plate corresponding to the first pointer.

[0015] As a further embodiment of the present invention: a housing is also installed on the sliding seat, a rotating tooth is rotatably connected to the inner side of the housing, a second pointer is fixedly connected to the rotating tooth, a movable frame is provided on the outer side of the rotating tooth, a spring is fixedly connected to the top of the movable frame, one end of the spring is fixedly connected to the inner wall of the housing, and a toothed plate corresponding to and adapted to the rotating tooth is provided on the inner side of the movable frame.

[0016] As a further embodiment of the present invention: a top rod is fixedly connected to the bottom surface of the movable frame, and a guide sleeve adapted to it is sleeved on the outer side of the top rod. The guide sleeve is fixedly connected to the bottom of the housing. A positioning pin is threadedly connected to the side wall of the guide sleeve. The end of the positioning pin is provided with a tapered head, and a tapered hole adapted to the tapered head is provided on the top rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. This invention uses a transport ring fixed to the front and rear ends of the cylinder with fixing bolts. The inner surface of the transport ring mates with the rotor to fix the radial relative position of the rotor, and the inner side of the transport ring mates with the rotor shaft shoulder to fix the axial position of the rotor. The inspection ring is fixed to the front and rear ends of the cylinder with fixing bolts. The detection mechanism on the inspection ring, along with the axial and radial detection parts on the rotor, detects the radial and axial positions of the rotor, thereby fixing the relative positions of the rotating and stationary parts of the high-pressure module. This ensures that the relative positions remain unchanged during transportation. Upon arrival at the site, the axial and radial relative positions of the rotating and stationary parts are checked, ensuring the relative positions of the moving and stationary parts during the transportation and on-site installation of the high-pressure module.

[0019] 2. This invention limits the axial position by having a detection pin fit against the axial detection surface and using a dimensional scale. With the cooperation of a torsion spring and gears, the detection pin can always be fitted against the axial detection surface. Thus, the flatness of the entire axial detection surface of the rotor can be judged by the jump of the detection pin during rotor rotation.

[0020] 3. In this invention, the sliding seat slides down, and the first pointer and scale line detect the radial distance of the rotor. By releasing the positioning pin, the spring causes the push rod to remain fixed on the outer wall of the rotor. Thus, the overall condition of the radial detection surface can be judged by the jumping of the second pointer during the rotation of the rotor. Attached Figure Description

[0021] Figure 1 This is an installation diagram of the transport ring in a transport and inspection device for a 330MW condensing steam turbine high-pressure module.

[0022] Figure 2 This is an installation diagram of the inspection ring in a transportation and inspection device for a 330MW condensing steam turbine high-pressure module.

[0023] Figure 3 This is a front view of the inspection mechanism in a transportation and inspection device for the high and medium pressure modules of a 330MW condensing steam turbine.

[0024] Figure 4 This is an enlarged view of A in a transport and inspection device for the high- and intermediate-pressure modules of a 330MW condensing steam turbine.

[0025] Figure 5 This is an enlarged view of B in a transport and inspection device for the high- and intermediate-pressure modules of a 330MW condensing steam turbine.

[0026] Figure 6 This is a cross-sectional view of the casing in a transport and inspection device for a 330MW condensing steam turbine high-pressure module.

[0027] In the diagram: 1. Cylinder; 2. Rotor; 3. Steam seal; 4. Transport ring; 5. Clamping part; 6. Inspection ring; 7. Fixing bolt; 8. Detection mechanism; 9. Axial detection part; 10. Radial detection part; 11. Fixing frame; 12. Axial detection assembly; 13. Radial detection assembly; 14. Extension plate; 15. Movable sleeve; 16. Circumvention notch; 17. Gear; 18. Torsion spring; 19. Detection pin; 20. Limiting plate; 21. Sliding seat; 22. Slide groove; 23. Hand-tightening bolt; 24. First pointer; 25. Scale line; 26. Housing; 27. Rotating gear; 28. Second pointer; 29. ​​Movable frame; 30. Spring; 31. Gear plate; 32. Push rod; 33. Guide sleeve; 34. Positioning pin; 35. Conical head; 36. Conical hole; 37. Rack part. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] Please see Figures 1-2 In this embodiment of the invention, a transport and inspection device for a 330MW condensing steam turbine high-pressure module includes a cylinder 1, a rotor 2 on the inner side of the cylinder 1, a steam seal 3 installed between the inner wall of the cylinder 1 and the rotor 2, transport rings 4 symmetrically arranged on both sides of the cylinder 1, a clamping part 5 on the rotor 2 corresponding to the bottom of the transport ring 4, the bottom of the transport ring 4 corresponding to and adapted to the clamping part 5, a fixing bolt 7 passing through the transport ring 4, and the transport ring 4 being fixedly installed on the cylinder 1 by the fixing bolt 7. Inspection rings 6 are also provided on both sides of the cylinder 1, and a fixing bolt 7 also passes through the inspection rings 6, and the inspection rings 6 are fixedly installed on the cylinder 1 by the fixing bolt 7. A detection mechanism 8 is provided on the inspection ring 6, and an axial detection part 9 and a radial detection part 10 are provided on the rotor 2 corresponding to the detection mechanism 8.

[0030] The transport ring 4 is fixedly installed to the front and rear ends of the cylinder 1 by fixing bolts 7. The inner surface of the transport ring 4 is used to cooperate with the rotor 2 to fix the radial relative position of the rotor 2. The inner side of the transport ring 4 is used to cooperate with the shoulder of the rotor 2 to fix the axial position of the rotor 2. The inspection ring 6 is fixedly installed to the front and rear ends of the cylinder 1 by fixing bolts 7. The radial and axial positions of the rotor 2 are detected by the detection mechanism 8 on the inspection ring 6 and the axial detection part 9 and radial detection part 10 on the rotor.

[0031] Please see Figure 2The testing mechanism 8 includes a fixed frame 11, an axial testing component 12, and a radial testing component 13. The fixed frame 11 is fixedly installed on the inspection ring 6, and an extension plate 14 is provided at the bottom of the fixed frame 11.

[0032] Please see Figure 3-5 The axial detection component 12 includes a movable sleeve 15, which is embedded in the extension plate 14. A clearance notch 16 is provided on the extension plate 14 corresponding to the top of the movable sleeve 15. A gear 17 is provided in the clearance notch 16. The gear 17 is rotatably mounted to the inner wall of the clearance notch 16 via a rotating shaft. A torsion spring 18 is sleeved on the outer side of the rotating shaft. The two ends of the torsion spring 18 are fixedly connected to the outer wall of the gear 17 and the inner wall of the clearance notch 16, respectively.

[0033] The movable sleeve 15 is slidably connected to a detection pin 19 that is adapted to it. The top surface of the detection pin 19 is provided with a rack portion 37 that is adapted to the gear 17. One end of the detection pin 19 is provided with a limiting piece 20. The detection pin 19 is provided with a size scale.

[0034] The axial position is defined by the contact pin 19 with the axial detection surface 9 and the size scale. With the cooperation of the torsion spring 18 and the gear 17, the contact pin 19 can always be in contact with the axial detection surface 9. Thus, the flatness of the entire axial detection surface 9 of the rotor 2 can be judged by the jump of the contact pin 19 during the rotor rotation.

[0035] Please see Figure 4 and 6 The radial detection component 13 includes a sliding seat 21, and an extension plate 14 has a groove 22. The sliding seat 21 is slidably connected in the groove 22. A hand-tightening bolt 23 is threadedly connected to the sliding seat 21. The hand-tightening bolt 23 passes through the sliding seat 21 and abuts against the inner wall of the groove 22. The sliding seat 21 has a threaded hole for threaded connection of the hand-tightening bolt 23.

[0036] A first pointer 24 is fixedly connected to one side of the sliding seat 21, and a scale line 25 adapted to the slide groove 22 is provided on the end of the extension plate 14 corresponding to the first pointer 24.

[0037] A housing 26 is also installed on the sliding seat 21. A rotating tooth 27 is rotatably connected to the inner side of the housing 26. A second pointer 28 is fixedly connected to the rotating tooth 27. A movable frame 29 is provided on the outer side of the rotating tooth 27. A spring 30 is fixedly connected to the top of the movable frame 29. One end of the spring 30 is fixedly connected to the inner wall of the housing 26. A toothed plate 31 corresponding to and adapted to the rotating tooth 27 is provided on the inner side of the movable frame 29.

[0038] A top rod 32 is fixedly connected to the bottom surface of the movable frame 29. A guide sleeve 33 that matches the top rod 32 is sleeved on the outside of the top rod 32. The guide sleeve 33 is fixedly connected to the bottom of the housing 26. A positioning pin 34 is threadedly connected to the side wall of the guide sleeve 33. A tapered head 35 is provided at the end of the positioning pin 34. A tapered hole 36 that matches the tapered head 35 is provided on the top rod 32.

[0039] The sliding seat 21 slides down, and the first pointer 24 and the scale line 25 work together to detect the radial distance of the rotor 2. By releasing the positioning pin 34, the spring 30 causes the push rod 32 to remain fixed on the outer wall of the rotor 2. Thus, the overall condition of the radial detection surface 10 can be judged by the jumping of the second pointer 28 during the rotation of the rotor 2.

[0040] The working principle of this invention is:

[0041] During transportation, the transport ring 4 is fixedly installed on the cylinder 1 by the fixing bolt 7. At this time, the clamping part 5 is clamped by the transport ring 4, thereby clamping and fixing the rotor 2.

[0042] During inspection, the inspection ring 6 is fixedly mounted on the cylinder 1 using the fixing bolts 7, and the fixing bracket 11 is mounted on the inspection ring 6, so that the axial detection component 12 is in contact with the axial detection part 9. The sliding seat 21 is lowered so that the radial detection component 13 is in contact with the radial detection part 10. The hand-tightening bolt 23 is rotated to lock the position of the radial detection component 13. At this time, the axial and radial dimensions of the rotor 2 can be read through the size scale and scale line 25. Then, the positioning pin 34 is rotated so that the tapered head 35 part leaves the tapered hole 36, so that the push rod 32 can move up and down in the guide sleeve 33. At this time, the rotor 2 can be rotated, so that the axial detection part 9 slides relative to the detection pin 19, and the radial detection part 10 slides relative to the end of the push rod 32, so as to perform the detection of the entire surface.

[0043] Under the action of the torsion spring 18, the gear 17, through its cooperation with the rack part 37, always drives the detection pin 19 to fit against the axial detection part 9. Thus, when the axial detection part 9 deviates, the detection pin 19 is driven to move back and forth in the movable sleeve 15, thereby obtaining the result that the axial detection part 9 has deviated.

[0044] Under the action of the spring 30, the push rod 32 continuously presses against the outside of the radial detection part 10. When the radial detection part 10 deviates, the push rod 32 is driven to move, thereby the push rod 32 drives the toothed plate 31 to move through the movable frame 29, further driving the rotating tooth 27 to rotate, causing the second pointer 28 to rotate, thereby judging the result of the radial detection part 10 deviating.

[0045] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A transport and inspection device for a 330MW condensing steam turbine high-pressure module, comprising a cylinder (1), characterized in that: The cylinder (1) has a rotor (2) on its inner side. A steam seal (3) is installed between the inner wall of the cylinder (1) and the rotor (2). Transport rings (4) are symmetrically arranged on both sides of the cylinder (1). A clamping part (5) is provided on the rotor (2) corresponding to the bottom of the transport ring (4). The bottom of the transport ring (4) corresponds to and is adapted to the clamping part (5). A fixing bolt (7) passes through the transport ring (4). The transport ring (4) is fixedly installed on the cylinder (1) by the fixing bolt (7). Inspection rings (6) are also provided on both sides of the cylinder (1). A fixing bolt (7) also passes through the inspection ring (6). The inspection ring (6) is fixedly installed on the cylinder (1) by the fixing bolt (7). A detection mechanism (8) is provided on the inspection ring (6). An axial detection part (9) and a radial detection part (10) are provided on the rotor (2) corresponding to the detection mechanism (8). The detection mechanism (8) includes a fixing frame (11) and an axial detection component (10). 2) The radial detection assembly (13) and the fixing bracket (11) are fixedly installed on the inspection ring (6). The bottom of the fixing bracket (11) is provided with an extension plate (14). The axial detection assembly (12) includes a movable sleeve (15), which is embedded in the extension plate (14). The extension plate (14) has a clearance notch (16) corresponding to the top of the movable sleeve (15). A gear (17) is provided in the clearance notch (16). The rotating shaft is rotatably installed on the inner wall of the clearance notch (16). A torsion spring (18) is sleeved on the outer side of the rotating shaft. The two ends of the torsion spring (18) are fixedly connected to the outer wall of the gear (17) and the inner wall of the clearance notch (16), respectively. A detection pin (19) adapted to it is slidably connected in the movable sleeve (15). The top surface of the detection pin (19) is provided with a rack part (37) adapted to the gear (17). One end of the detection pin (19) is provided with a limiting piece (20).

2. The transportation and inspection device for a 330MW condensing steam turbine high-pressure module according to claim 1, characterized in that: The radial detection assembly (13) includes a sliding seat (21), and an extension plate (14) is provided with a groove (22). The sliding seat (21) is slidably connected in the groove (22). A hand-tightening bolt (23) is threadedly connected to the sliding seat (21). The hand-tightening bolt (23) passes through the sliding seat (21) and abuts against the inner wall of the groove (22). A threaded hole for threaded connection of the hand-tightening bolt (23) is provided on the sliding seat (21).

3. The transportation and inspection device for a 330MW condensing steam turbine high-pressure module according to claim 2, characterized in that: A first pointer (24) is fixedly connected to one side of the sliding seat (21), and a scale line (25) adapted to the slide groove (22) is provided on the end of the extension plate (14) corresponding to the first pointer (24).

4. The transportation and inspection device for a 330MW condensing steam turbine high-pressure module according to claim 2, characterized in that: The sliding seat (21) is also equipped with a housing (26). A rotating tooth (27) is rotatably connected to the inner side of the housing (26). A second pointer (28) is fixedly connected to the rotating tooth (27). A movable frame (29) is provided on the outer side of the rotating tooth (27). A spring (30) is fixedly connected to the top of the movable frame (29). One end of the spring (30) is fixedly connected to the inner wall of the housing (26). A toothed plate (31) corresponding to and adapted to the rotating tooth (27) is provided on the inner side of the movable frame (29).

5. A transportation and inspection device for a 330MW condensing steam turbine high-pressure module according to claim 4, characterized in that: The bottom surface of the movable frame (29) is fixedly connected to a top rod (32). A guide sleeve (33) is fitted on the outer side of the top rod (32). The guide sleeve (33) is fixedly connected to the bottom of the housing (26). A positioning pin (34) is threaded on the side wall of the guide sleeve (33). The end of the positioning pin (34) is provided with a tapered head (35). The top rod (32) is provided with a tapered hole (36) that is adapted to the tapered head (35).

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