Oil leakage prevention sealing device for wire outlet hole of steam turbine

Abstract

The utility model discloses a steam turbine wire outlet hole oil leakage prevention sealing device, which relates to the technical field of steam turbine sealing, and comprises a steam turbine body, a leading-out wire, an upper connecting sleeve, a lower connecting sleeve and a lower thread bushing, wire sleeving holes are formed in the upper connecting sleeve and the lower connecting sleeve, the wire sleeving holes are matched with the leading-out wire, and the lower thread bushing is matched with the leading-out wire. The bottoms of the two sides of the upper connecting sleeve are each fixedly provided with two connecting rods, one side of each connecting rod is fixedly provided with a connecting buckle, the interiors of the tops of the two sides of the lower connecting sleeve are each provided with an L-shaped clamping groove, the connecting rods and the connecting buckles are both matched with the L-shaped clamping grooves, and the outer sides of the upper connecting sleeve and the lower connecting sleeve are each provided with a sealing gasket. The beneficial effects of the utility model are that through the arrangement of the upper connecting sleeve and the lower connecting sleeve, the connecting sleeve can be conveniently sleeved on the outer side of the outgoing line to seal the screwed joint, the connection is convenient and rapid, and rapid installation, disassembly and replacement can be carried out without sleeving the outer side of the outgoing line from one end of the outgoing line in advance.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine sealing technology, specifically to a steam turbine outlet hole oil leakage prevention sealing device. Background Technology

[0002] A steam turbine, also known as a steam engine, is a rotary steam power unit. High-temperature, high-pressure steam passes through a fixed nozzle, becomes an accelerated airflow, and is then injected onto blades, causing a rotor equipped with rows of blades to rotate and perform work. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship propulsion systems.

[0003] During the manufacturing process, after the lead wire of the turbine cylinder passes through the outlet hole, the outlet hole needs to be sealed to prevent oil leakage. Existing sealing devices at the turbine outlet hole often require pre-installation on the outside of the lead wire, which is inconvenient when the seal is damaged, thus having certain shortcomings. To address this, we propose a leak-proof sealing device for the turbine outlet hole. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a steam turbine outlet hole oil leakage prevention sealing device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a steam turbine outlet oil leakage sealing device, comprising a steam turbine body, an outlet wire, an upper connecting sleeve, a lower connecting sleeve, and a lower threaded sleeve. Both the upper and lower connecting sleeves have internal threaded holes that mate with the outlet wire. Two connecting rods are fixedly installed on the bottom of both sides of the upper connecting sleeve, and a connecting buckle is fixedly installed on one side of each connecting rod. L-shaped grooves are formed inside the top of both sides of the lower connecting sleeve, and the connecting rods and connecting buckles mate with these L-shaped grooves. Sealing gaskets are installed on the outer sides of both the upper and lower connecting sleeves. An outlet wire is formed inside the steam turbine body, and the outlet wire mates with the outlet wire. The sealing gasket also mates with the outlet wire. An upper threaded sleeve is movably installed on the top of the lower threaded sleeve. Threaded connectors are fixedly installed on one side of both the upper and lower connecting sleeves, and both the lower and upper threaded sleeves mate with the threaded connectors.

[0006] Preferably, a groove is provided on the top of one side of the lower threaded sleeve, and a connecting lug is fixedly installed on the bottom of one side of the upper threaded sleeve. A rotating shaft is fixedly installed on both sides of the connecting lug, and the rotating shaft is rotatably connected to the inner wall of the groove. A connecting plate is fixedly installed on the other side of both the lower and upper threaded sleeves. A bolt hole is provided inside the connecting plate, and a fixing bolt is installed inside the bolt hole. A nut is threaded on the outer side of the fixing bolt.

[0007] Preferably, an inner sealing ring is installed on the inner side of both the upper and lower connecting sleeves and inside the sleeve hole, and the inner sealing ring cooperates with the lead wire.

[0008] Preferably, a limit ring is fixedly installed on one side of both the upper connecting sleeve and the lower connecting sleeve, and the limit ring cooperates with the outlet hole.

[0009] Preferably, a limiting plate is fixedly installed at the bottom of the lower threaded sleeve and the top of the upper threaded sleeve.

[0010] Preferably, both the lower threaded sleeve and the upper threaded sleeve have internal threads that mate with the threaded joint.

[0011] This utility model provides a leak-proof sealing device for turbine outlet holes, which has the following advantages:

[0012] 1. The turbine outlet oil leakage sealing device, through the setting of the upper connecting sleeve and the lower connecting sleeve, makes it easy to be sleeved and installed on the outside of the lead wire to seal the threaded joint. The connection is convenient and quick, and it can be quickly installed, disassembled and replaced without having to be sleeved on the outside of the lead wire from one end. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a sectional view of the upper and lower connecting sleeves of this utility model;

[0015] Figure 3 These are side sectional views of the upper and lower threaded sleeves of this utility model;

[0016] Figure 4 This utility model Figure 2 Enlarged view of point A in the image;

[0017] Figure 5 This utility model Figure 3 Enlarged view of point B in the image.

[0018] In the diagram: 1. Turbine body; 2. Lead-out line; 3. Upper connecting sleeve; 4. Lower connecting sleeve; 5. Sleeve hole; 6. Connecting rod; 7. Connecting buckle; 8. L-shaped groove; 9. Lower threaded sleeve; 10. Sealing gasket; 11. Outlet hole; 12. Upper threaded sleeve; 13. Groove; 14. Connecting lug; 15. Shaft; 16. Connecting plate; 17. Bolt hole; 18. Fixing bolt; 19. Nut; 20. Threaded joint; 21. Limiting ring; 22. Limiting plate; 23. Inner sealing ring. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] Please see Figures 1 to 5 This utility model provides a technical solution: a steam turbine outlet oil leakage prevention and sealing device, including a steam turbine body 1, an outlet wire 2, an upper connecting sleeve 3, a lower connecting sleeve 4, and a lower threaded sleeve 9. Both the upper connecting sleeve 3 and the lower connecting sleeve 4 have a sleeve hole 5 inside, which mates with the outlet wire 2. An inner sealing ring 23 is installed inside the sleeve hole 5 on the inner side of both the upper connecting sleeve 3 and the lower connecting sleeve 4, mates with the outlet wire 2. Two connecting rods 6 are fixedly installed on the bottom of both sides of the upper connecting sleeve 3, and a connecting buckle 7 is fixedly installed on one side of each connecting rod 6. L-shaped grooves 8 are opened inside the top of both sides of the lower connecting sleeve 4, and the connecting rods 6 and the connecting buckle 7 mate with the L-shaped grooves 8. Sealing gaskets 10 are installed on the outer sides of both the upper connecting sleeve 3 and the lower connecting sleeve 4. The engine body 1 has an outlet hole 11 inside, the lead wire 2 mates with the outlet hole 11, the sealing gasket 10 mates with the outlet hole 11, the top of the lower threaded sleeve 9 is movably installed with an upper threaded sleeve 12, and the upper connecting sleeve 3 and the lower connecting sleeve 4 are both fixedly installed with threaded connectors 20 on one side. The lower threaded sleeve 9 and the upper threaded sleeve 12 both mate with the threaded connectors 20. The lower threaded sleeve 9 and the upper threaded sleeve 12 both have threads inside that mate with the threaded connectors 20. The connecting rod 6, the connecting buckle 7 and the L-shaped groove 8 are used to facilitate the connection of the upper connecting sleeve 3 and the lower connecting sleeve 4 and to fit on the outside of the lead wire 2. The inner sealing ring 23 is used to improve the sealing performance of the lead wire 2 installed in the sleeve hole 5. The lower threaded sleeve 9 and the upper threaded sleeve 12 are connected to the threaded connectors 20 by threads.

[0021] A groove 13 is provided on the top of one side of the lower threaded sleeve 9, and a connecting lug 14 is fixedly installed on the bottom of one side of the upper threaded sleeve 12. A rotating shaft 15 is fixedly installed on both sides of the connecting lug 14. The rotating shaft 15 is rotatably connected to the inner wall of the groove 13. A connecting plate 16 is fixedly installed on the other side of both the lower threaded sleeve 9 and the upper threaded sleeve 12. A bolt hole 17 is provided inside the connecting plate 16. A fixing bolt 18 is installed inside the bolt hole 17. A nut 19 is threaded on the outside of the fixing bolt 18. The functions of the groove 13, connecting lug 14, rotating shaft 15, connecting plate 16, bolt hole 17, fixing bolt 18 and nut 19 are to facilitate the connection and separation of the lower threaded sleeve 9 and the upper threaded sleeve 12, and to facilitate the connection between the lower threaded sleeve 9 and the upper threaded sleeve 12 and the threaded connector 20 after the lower threaded sleeve 9 and the upper threaded sleeve 12 are fitted on the outside of the lead wire 2.

[0022] Limiting rings 21 are fixedly installed on one side of the upper connecting sleeve 3 and the lower connecting sleeve 4. The limiting rings 21 cooperate with the outlet hole 11. Limiting plates 22 are fixedly installed on the bottom of the lower threaded sleeve 9 and the top of the upper threaded sleeve 12. The function of the limiting rings 21 is to limit the upper connecting sleeve 3 and the lower connecting sleeve 4. The limiting rings 21 are located inside the turbine body 1 and also play a part of the sealing effect.

[0023] In summary, when using this turbine outlet oil leakage sealing device, firstly, the lower connecting sleeve 4 is fitted inside the turbine body 1 and placed at the bottom of the lead wire 2. Then, the upper connecting sleeve 3 is placed above the lead wire 2 through the sleeve hole 5 and fitted onto the outside of the lead wire 2. During fitting, the connecting rod 6 and the connecting buckle 7 are inserted into the L-shaped slot 8. Then, the upper connecting sleeve 3 is pulled to the side to make the connecting buckle 7 snap into the L-shaped slot 8, thus connecting the upper connecting sleeve 3 and the lower connecting sleeve 4. Finally, the fitted upper connecting sleeve 3 and lower connecting sleeve 4 are inserted from the inside of the turbine body 1. By inserting the sealing gasket 10 into the outlet hole 11, the outlet hole 11 can be blocked until the threaded connector 20 passes through the outside of the outlet hole 11. Then, the lower threaded sleeve 9 and the upper threaded sleeve 12 are fitted onto the outside of the lead wire 2. The fixing bolt 18 is then passed through the bolt hole 17 and the two connecting plates 16 are fixed by the cooperation of the nut 19 and the fixing bolt 18. Finally, the lower threaded sleeve 9 and the upper threaded sleeve 12 are rotated to make them threadedly connected with the threaded connector 20, and the upper connecting sleeve 3 and the lower connecting sleeve 4 are fixed in the outlet hole 11. The installation is then completed. The installation and disassembly are convenient and quick.

[0024] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A leak-proof sealing device for a steam turbine outlet hole, comprising a steam turbine body (1), an outlet wire (2), an upper connecting sleeve (3), a lower connecting sleeve (4), and a lower threaded sleeve (9), characterized in that: Both the upper connecting sleeve (3) and the lower connecting sleeve (4) have thread holes (5) inside, which mate with the lead wire (2). Two connecting rods (6) are fixedly installed on the bottom of both sides of the upper connecting sleeve (3), and a connecting buckle (7) is fixedly installed on one side of each connecting rod (6). L-shaped slots (8) are opened inside the top of both sides of the lower connecting sleeve (4), and the connecting rods (6) and connecting buckles (7) mate with the L-shaped slots (8). 4) is equipped with a sealing gasket (10) on the outside. The turbine body (1) is provided with a wire outlet hole (11). The lead wire (2) is matched with the wire outlet hole (11). The sealing gasket (10) is matched with the wire outlet hole (11). The top of the lower threaded sleeve (9) is movably installed with an upper threaded sleeve (12). The upper connecting sleeve (3) and the lower connecting sleeve (4) are both fixedly installed with threaded joints (20) on one side. The lower threaded sleeve (9) and the upper threaded sleeve (12) are matched with the threaded joints (20).

2. The oil leakage prevention sealing device for a steam turbine outlet hole according to claim 1, characterized in that: A groove (13) is provided on the top of one side of the lower threaded sleeve (9), and a connecting lug (14) is fixedly installed on the bottom of one side of the upper threaded sleeve (12). A rotating shaft (15) is fixedly installed on both sides of the connecting lug (14). The rotating shaft (15) is rotatably connected to the inner wall of the groove (13). A connecting plate (16) is fixedly installed on the other side of both the lower threaded sleeve (9) and the upper threaded sleeve (12). A bolt hole (17) is provided inside the connecting plate (16). A fixing bolt (18) is installed inside the bolt hole (17). A nut (19) is threaded on the outer side of the fixing bolt (18).

3. The oil leakage prevention sealing device for a steam turbine outlet hole according to claim 1, characterized in that: An inner sealing ring (23) is installed inside the upper connecting sleeve (3) and the lower connecting sleeve (4) and inside the sleeve hole (5). The inner sealing ring (23) cooperates with the lead wire (2).

4. The turbine outlet oil leakage prevention sealing device according to claim 1, characterized in that: Limiting rings (21) are fixedly installed on one side of both the upper connecting sleeve (3) and the lower connecting sleeve (4), and the limiting rings (21) cooperate with the wire outlet hole (11).

5. The turbine outlet oil leakage prevention sealing device according to claim 1, characterized in that: Limiting plates (22) are fixedly installed at the bottom of the lower threaded sleeve (9) and the top of the upper threaded sleeve (12).

6. The oil leakage prevention sealing device for a steam turbine outlet hole according to claim 1, characterized in that: Both the lower threaded sleeve (9) and the upper threaded sleeve (12) have threads inside that mate with the threaded joint (20).

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