Expansion joint structure of tubular turbine

Abstract

The utility model relates to the technical field of water turbines, in particular to an expansion joint structure of a tubular turbine. The expansion joint comprises a water turbine pipe and a connecting pipe, one side of the water turbine pipe and one side of the connecting pipe are fixedly connected to a second flange and a first flange respectively, an expansion joint body is arranged between the second flange and the first flange, the two sides of the expansion joint body are each provided with a first flange and a first sealing ring, and a threaded groove is formed in one side of each first sealing ring; and a threaded ring is in threaded connection with the interior of the threaded groove, the threaded ring is fixed to a second sealing ring, two third connecting flanges are fixedly connected to the circumferential side of the expansion joint body, installation of the second sealing ring and the first sealing ring can be facilitated, and later disassembly is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of water turbines, in particular to a bulb turbine expansion joint structure. Background Art

[0002] A water turbine is a power machine that converts the energy of water flow into rotational mechanical energy. It belongs to the turbomachinery in fluid machinery. Most modern water turbines are installed in hydropower stations to drive generators to generate electricity. In a hydropower station, the water in the upstream reservoir is led to the water turbine through a water inlet pipe, which drives the runner of the water turbine to rotate and drives the generator to generate electricity. The water that has done work is then discharged downstream through the tail water pipe. The higher the head and the larger the flow rate, the greater the output power of the water turbine.

[0003] When installing the expansion joint of a water turbine, it is necessary to install sealing rings inside the expansion joint and at the connecting flange. In order to improve the sealing performance between the expansion joint and the connecting pipe, the sizes of some I-shaped sealing rings are matched with the expansion joint. Therefore, when installing, the sealing ring is generally folded and stuffed into the expansion joint. If the sealing ring of the water turbine expansion joint is larger, it is more troublesome to fold the sealing ring, resulting in troublesome installation. Moreover, when the sealing ring is damaged, it is also more troublesome to replace. Content of the Utility Model

[0004] Aiming at the deficiencies existing in the prior art, the purpose of the utility model is to provide a bulb turbine expansion joint structure, which has the effect of facilitating the installation and disassembly of the sealing ring.

[0005] The above technical purpose of the utility model is achieved through the following technical solutions:

[0006] A bulb turbine expansion joint structure includes a water turbine pipe and a connecting pipe. One sides of the water turbine pipe and the connecting pipe are respectively fixedly connected to a second flange and a first flange. An expansion joint main body is arranged between the second flange and the first flange. First flanges and first sealing rings are arranged on both sides of the expansion joint main body. A threaded groove is formed on one side of the first sealing ring. A threaded ring is threadedly connected in the threaded groove. The threaded ring is fixed to a second sealing ring. Two third connecting flanges are fixedly connected to the circumferential side of the expansion joint main body.

[0007] By adopting the above technical solutions, there are a water turbine pipe, a connecting pipe, a second flange, a first flange, an expansion joint main body, a second sealing ring, a first sealing ring, a threaded ring and a first sealing ring. And the first sealing ring and the second sealing ring are detachably connected through the threaded ring and the threaded groove, which can facilitate the installation of the second sealing ring and the first sealing ring.

[0008] In a preferred embodiment, the present utility model can be further configured as follows: A plurality of second bolts are fixedly connected to one side of the second flange, and the plurality of second bolts all movably penetrate through two third connecting flanges and the first flange, and second nuts are threadedly connected to the circumferential sides of the plurality of second bolts.

[0009] By adopting the above technical solution, the cooperation of the second bolts and the second nuts can facilitate the connection of the first flange, the second flange, the two third connecting flanges, and the main body of the expansion joint.

[0010] In a preferred embodiment, the present utility model can be further configured as follows: A plurality of disassembly blocks are fixedly connected to the circumferential side of one of the third connecting flanges, and mounting holes are formed in the plurality of disassembly blocks.

[0011] By adopting the above technical solution, fixing bolts can be conveniently mounted on the mounting holes to separate the main body of the expansion joint and the third connecting flange from the first flange and the second flange.

[0012] In a preferred embodiment, the present utility model can be further configured as follows: A plurality of first bolts are provided on both sides of the second flange and the main body of the expansion joint, and the plurality of first bolts respectively movably penetrate through the second flange, the first flange, and the two third connecting flanges, and first nuts are threadedly connected to the circumferential sides of the plurality of first bolts.

[0013] By adopting the above technical solution, the first nuts can facilitate the connection of the two third connecting flanges with the main body of the expansion joint, the first flange, and the second flange.

[0014] In a preferred embodiment, the present utility model can be further configured as follows: A knocking platform is fixedly connected to one side of each of the plurality of disassembly blocks, and anti-slip grooves are formed on one side of each of the plurality of knocking platforms.

[0015] By adopting the above technical solution, the knocking platform and the anti-slip grooves can facilitate the maintenance personnel to knock on the knocking platform.

[0016] In a preferred embodiment, the present utility model can be further configured as follows: Connecting holes are formed on one side of the second flange, the first flange, and the two third connecting flanges.

[0017] By adopting the above technical solution, the connecting holes can facilitate the installation of bolts for reinforcement.

[0018] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0019] 1. A water turbine pipe, a connecting pipe, a second flange, a first flange, a telescopic joint body, a second sealing ring, a first sealing ring, a threaded ring and a first sealing ring are provided. The second sealing ring and the first sealing ring are placed on both sides of the telescopic joint body. The second sealing ring is rotated, and the second sealing ring drives the threaded ring to rotate. The threaded ring is threadedly connected with the threaded groove. The first sealing ring and the second sealing ring are detachably connected through the threaded ring and the threaded groove, which can facilitate the installation of the second sealing ring and the first sealing ring and is also more convenient for later disassembly.

[0020] 2. An installation hole, a disassembly block, a knocking table and an anti-slip groove are provided. By hammering the knocking table with a hammer, the third connecting flange can be separated from the second flange, which can facilitate the appearance of a gap between the second flange and the third connecting flange and the second sealing ring, and facilitate the separation of the telescopic joint body from the water turbine pipe and the connecting pipe. Description of the Drawings

[0021] Figure 1 is a three-dimensional view of this embodiment;

[0022] Figure 2 is this embodiment Figure 1 is a partial enlarged view at A in;

[0023] Figure 3 is a three-dimensional sectional view of this embodiment;

[0024] Figure 4 is this embodiment Figure 3 is a partial enlarged view at B in.

[0025] In the figure, 1. water turbine pipe; 2. connecting pipe; 3. first flange; 4. second flange; 5. telescopic joint body; 6. third connecting flange; 7. disassembly block; 8. knocking table; 9. installation hole; 10. first bolt; 11. first nut; 12. first sealing ring; 13. second sealing ring; 14. threaded ring; 15. threaded groove; 16. second bolt; 17. second nut; 18. anti-slip groove; 19. connecting hole. Detailed Description of the Invention

[0026] The following further describes the present invention in detail with reference to the accompanying drawings. Embodiment

[0027] Refer to Figures 1-4, a telescopic joint structure of a tubular turbine disclosed by the utility model, includes a turbine pipe 1 and a connecting pipe 2. One sides of the turbine pipe 1 and the connecting pipe 2 are respectively fixedly connected to a second flange 4 and a first flange 3. A telescopic joint main body 5 is arranged between the second flange 4 and the first flange 3. Both sides of the telescopic joint main body 5 are provided with the first flange 3 and a first sealing ring 12. A threaded groove 15 is opened on one side of the first sealing ring 12. A threaded ring 14 is threadedly connected in the threaded groove 15. The threaded ring 14 is fixed to a second sealing ring 13. Two third connecting flanges 6 are fixedly connected to the circumferential side of the telescopic joint main body 5. Place the second sealing ring 13 and the first sealing ring 12 on both sides of the telescopic joint main body 5. Rotate the second sealing ring 13. The second sealing ring 13 drives the threaded ring 14 to rotate. The threaded ring 14 is threadedly connected to the threaded groove 15. The first sealing ring 12 and the second sealing ring 13 are detachably connected through the threaded ring 14 and the threaded groove 15, which can facilitate the installation of the second sealing ring 13 and the first sealing ring 12.

[0028] One side of the second flange 4 is fixedly connected with a plurality of second bolts 16. The plurality of second bolts 16 all movably penetrate through the two third connecting flanges 6 and the first flange 3. The first flange 3, the third connecting flanges 6, the first sealing ring 12 and the second sealing ring 13 are all sleeved on the surface of the second bolts 16, which facilitates the connection of the turbine pipe 1, the connecting pipe 2 and the telescopic joint main body 5. Threaded nuts 17 are threadedly connected to the circumferential sides of the plurality of second bolts 16. The cooperation of the second bolts 16 and the threaded nuts 17 can facilitate the connection of the first flange 3, the second flange 4, the two third connecting flanges 6 and the telescopic joint main body 5.

[0029] A plurality of disassembly blocks 7 are fixedly connected to the circumferential side of one of the third connecting flanges 6. This third connecting flange 6 is the third connecting flange 6 close to the turbine pipe 1, which facilitates separating the telescopic joint main body 5 from the turbine pipe 1 first. Installation holes 9 are opened on the plurality of disassembly blocks 7. A plug rod can be inserted into the installation holes 9, which is convenient for pulling the third connecting flange 6 to be separated from the turbine pipe 1. Fixing bolts are convenient on the installation holes 9 to separate the telescopic joint main body 5 and the third connecting flange 6 from the first flange 3 and the second flange 4.

[0030] A plurality of first bolts 10 are arranged on both sides of the second flange 4 and the telescopic joint main body 5. And the plurality of first bolts 10 respectively movably penetrate through the second flange 4, the first flange 3 and the two third connecting flanges 6. Preferably, the plurality of first bolts 10 are divided into two groups, which can connect the two third connecting flanges 6 to the second flange 4 and the first flange 3 respectively, and make the first sealing ring 12 and the second sealing ring 13 fit more tightly with the second flange 4 and the first flange 3. Threaded nuts 11 are threadedly connected to the circumferential sides of the plurality of first bolts 10. The threaded nuts 11 can facilitate the connection of the two third connecting flanges 6 with the telescopic joint main body 5, the first flange 3 and the second flange 4.

[0031] One side of each of the multiple disassembly blocks 7 is fixedly connected to a knocking platform 8. Anti-slip grooves 18 are provided on one side of each of the multiple knocking platforms 8. By hitting the knocking platform 8 with a hammer, the third connecting flange 6 can be separated from the second flange 4, which can facilitate the emergence of gaps between the second flange 4, the third connecting flange 6 and the second sealing ring 13, and facilitate the separation of the expansion joint body 5 from the water turbine pipe 1 and the connecting pipe 2.

[0032] Connection holes 19 are provided on one side of the second flange 4, the first flange 3 and the two third connecting flanges 6. The connection holes 19 can facilitate the installation of bolts for reinforcement. The connection holes 19 on the second flange 4, the third connecting flange 6 and the third connecting flange 6 are aligned, which is convenient for inserting redundant screw rods or connecting rods, etc.

[0033] The implementation principle of the above embodiment is as follows: Place the second sealing ring 13 and the first sealing ring 12 on both sides of the expansion joint body 5. Rotate the second sealing ring 13, and the second sealing ring 13 drives the thread ring 14 to rotate. The thread ring 14 is threadedly connected to the thread groove 15. The first sealing ring 12 and the second sealing ring 13 are detachably connected through the thread ring 14 and the thread groove 15, which can facilitate the installation of the second sealing ring 13 and the first sealing ring 12.

[0034] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0035] The embodiments of this specific implementation manner are all preferred embodiments of the present invention. Without limiting the protection scope of the present invention accordingly, therefore: All equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. A tubular turbine expansion joint structure, comprising a turbine pipe (1) and a connecting pipe (2), characterized in that: One side of the turbine pipe (1) and the connecting pipe (2) are fixedly connected to the second flange (4) and the first flange (3), respectively; a telescopic joint body (5) is arranged between the second flange (4) and the first flange (3); both sides of the telescopic joint body (5) are provided with the first flange (3) and the first sealing ring (12); one side of the first sealing ring (12) is provided with a thread groove (15); a thread ring (14) is connected to the inner thread of the thread groove (15); the thread ring (14) is fixed to the second sealing ring (13); and two third connecting flanges (6) are fixedly connected to the circumferential side of the telescopic joint body (5).

2. The expansion joint structure of a tubular turbine according to claim 1, characterized in that: A plurality of second bolts (16) are fixedly connected to one side of the second flange (4), the plurality of second bolts (16) are movably inserted through the two third connection flanges (6) and the first flange (3), and the circumferential sides of the plurality of second bolts (16) are threadedly connected to second nuts (17).

3. The expansion joint structure of a tubular turbine according to claim 1, characterized in that: A plurality of disassembly blocks (7) are fixedly connected to the circumferential side of one of the third connection flanges (6), and mounting holes (9) are provided on the plurality of disassembly blocks (7).

4. The expansion joint structure of a tubular turbine according to claim 1, characterized in that: A plurality of first bolts (10) are provided on both sides of the second flange (4) and the telescopic joint body (5), and the plurality of first bolts (10) are respectively movably passed through the second flange (4), the first flange (3) and the two third connecting flanges (6), and the circumferential sides of the plurality of first bolts (10) are all threadedly connected with first nuts (11).

5. The expansion joint structure of a tubular turbine according to claim 3, characterized in that: One side of each of the plurality of disassembly blocks (7) is fixedly connected to a striking platform (8), and one side of each of the plurality of striking platforms (8) is provided with an anti-slip groove (18).

6. The expansion joint structure of a tubular turbine according to claim 1, characterized in that: A connecting hole (19) is provided on one side of the second flange (4), the first flange (3) and the two third connecting flanges (6).

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