Stable water turbine stator base

Abstract

The utility model discloses a stable water turbine stator base, it includes: the middle ring board, the lower ring board and the upper ring board are divided into two halves and place symmetrical synthesis annular, the lower ring board, the upper ring board and the middle ring board are coaxial, the middle ring board, the lower ring board and the upper ring board are fixedly connected with bolt, and the corresponding half piece middle ring board, half piece lower ring board and half piece upper ring board on the joint block and another half piece middle ring board, another half piece lower ring board and another half piece upper ring board on the joint block one to one and with the fixed screw rod one and nut fixed connection on the joint block, and the middle ring board, the lower ring board and the upper ring board are welded after shape integrity when connecting, and the stator base pier has several and is evenly distributed around the lower ring board with the center axis of the middle ring board as center, and the end of the stator base pier near the center axis of the middle ring board is placed between the lower ring board and the middle ring board, and the stator base pier is connected with the lower ring board. The utility model has the advantages of simpler structure, and the production installation is more convenient.

Description

Technical Field

[0001] This utility model relates to the technical field of turbine stator components, and in particular to a stable turbine stator base. Background Technology

[0002] Turbines and auxiliary equipment are important hydroelectric equipment and an indispensable component of the hydropower industry. They are crucial for fully utilizing clean and renewable energy to achieve energy conservation, emission reduction, and environmental pollution reduction. However, in existing technologies, the stator base of hydroelectric turbines has a relatively complex structure for stability, making installation quite troublesome.

[0003] Chinese Patent Publication No. CN116131502A, published on May 16, 2023, discloses a stable turbine stator base, comprising: a support mechanism including a building base, a base ring mounted on the building base, and positioning chambers formed in the base ring; a stator frame including a stator frame body, support legs mounted on the stator frame body, and extended positioning components mounted on the support legs; and a locking mechanism including a lock seat mounted on the base ring and a locking tongue component mounted on the lock seat. By setting up positioning chambers and extended positioning components, when the extended positioning components are fully inserted into the inner side of multiple positioning chambers, the bottom ends of multiple support legs are all in contact with the base ring. At this time, the base ring can provide stable support for the support legs, avoiding the problem of unstable support for the support legs in the prior art. The drawback of this invention is that the structure is relatively complex, and production and installation are relatively troublesome. Utility Model Content

[0004] This invention aims to overcome the shortcomings of existing technologies, such as complex structures and complicated production and installation, by providing a stable turbine stator base with a simpler structure and easier production and installation.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A stable turbine stator base, comprising: The middle ring plate is divided into two halves and placed symmetrically to form a ring; The lower ring plate is divided into two halves and placed symmetrically to form a ring. The lower ring plate is placed below the middle ring plate and is coaxial with the middle ring plate. The upper ring plate is divided into two halves and placed symmetrically to form a ring. The upper ring plate is placed on the upper end surface of the middle ring plate and is coaxial with the middle ring plate. The middle ring plate, lower ring plate and upper ring plate are fixedly connected by bolts. Several joint blocks are provided at the joints of half of the middle ring plate, lower ring plate and upper ring plate. The joint blocks on the corresponding half of the middle ring plate, half of the lower ring plate and half of the upper ring plate correspond one-to-one with the joint blocks on the other half of the middle ring plate, the other half of the lower ring plate and the other half of the upper ring plate and are fixedly connected by fixing screws and nuts on the joint blocks. The joint blocks are welded after the middle ring plate, lower ring plate and upper ring plate are in complete shape when they are connected. The stator foundation supports are numerous and evenly distributed around the lower ring plate with the central axis of the middle ring plate as the center. The end of each stator foundation support near the central axis of the middle ring plate is placed between the lower ring plate and the middle ring plate, and the stator foundation support is connected to the lower ring plate.

[0006] During production, the middle ring plate, lower ring plate, and upper ring plate are all manufactured in two halves. Then, the joint blocks are aligned and fixed with screws and nuts. After the positions are determined, the middle ring plate, lower ring plate, and upper ring plate are welded together. The joint blocks are then removed. Next, the stator foundation support is wrapped around the lower ring plate and fixed. Then, the middle ring plate is used to cover the overlap between the stator foundation support and the lower ring plate. Finally, the middle ring plate, lower ring plate, and upper ring plate are fixed with bolts to form the turbine stator base. This achieves a simpler structure and more convenient production and installation.

[0007] Preferably, the outer surface of the lower ring plate is provided with several vertical plates, each corresponding to a stator foundation support. Each vertical plate is perpendicular to the upper surface of the lower ring plate and fixedly connected to it. A second vertical plate is provided on the upper surface of the stator foundation support, fixedly connected to it and parallel to the first vertical plate. The second vertical plate is placed on the outer surface of the first vertical plate and in contact with it. The arrangement of the second and first vertical plates facilitates the limitation of the length of the stator foundation support between the lower and middle ring plates.

[0008] Preferably, the stator foundation support is provided with a second fixing screw, which passes through the inner side of the first vertical plate and is threadedly connected to the second vertical plate. The second fixing screw increases the stability of the connection between the stator foundation support and the lower ring plate.

[0009] Preferably, the upper surfaces of the first and second vertical plates are provided with alignment marks, and the alignment marks on the first and second vertical plates are on the same extended line extending outward from the center of the lower ring plate. This alignment ensures that the position of the stator foundation support is not misaligned.

[0010] Preferably, the upper ring plate has several fixing holes 1, which are evenly distributed on the upper ring plate with the center of the upper ring plate as the central axis. The lower ring plate has several fixing holes 2, and the middle ring plate has several fixing holes 3. When the central axes of the lower ring plate, upper ring plate, and middle ring plate overlap, fixing holes 1, 2, and 3 overlap one-to-one. Fixing holes 1, 2, and 3 facilitate the connection and fixation of the lower ring plate, upper ring plate, and middle ring plate to prevent displacement and improve stability.

[0011] Preferably, the outer surface of the middle ring plate is provided with several slots, which are evenly divided into several groups. The number of groups of slots corresponds one-to-one with the stator foundation support. One group of slots is placed on the straight plane of the middle ring plate, and the outer surface of the middle ring plate with the slots contacts the stator foundation support. The slots increase the friction of the stator foundation support and stabilize it.

[0012] The beneficial effects of this utility model are: a simpler structure and easier production and installation; the second vertical plate and the first vertical plate can easily limit the length of the stator foundation support between the lower ring plate and the middle ring plate; the second fixing screw can increase the stability of the connection between the stator foundation support and the lower ring plate; the alignment ensures that the position of the stator foundation support will not shift; the first fixing hole, the second fixing hole and the third fixing hole facilitate the connection and fixation of the lower ring plate, the upper ring plate and the middle ring plate without shifting, thus improving stability; the slot increases the friction of the stator foundation support and stabilizes the stator foundation support. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the present invention; Figure 2 yes Figure 1 A cross-sectional view of AA; Figure 3 yes Figure 1 A magnified view of detail B; Figure 4 This is a structural schematic diagram of the middle ring plate; Figure 5 This is a structural schematic diagram of the lower ring plate; Figure 6 This is a structural schematic diagram of the upper ring plate; Figure 7 This is a magnified view of the connection between the stator foundation support and the lower ring plate.

[0014] In the diagram: 1. Middle ring plate, 2. Lower ring plate, 3. Upper ring plate, 4. Stator foundation support, 5. Joint block, 6. Fixing screw one, 7. Vertical plate one, 8. Vertical plate two, 9. Alignment, 10. Fixing screw two, 11. Fixing hole one, 12. Fixing hole two, 13. Slot, 14. Nut, 15. Fixing hole three. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0016] like Figures 1 to 6 In one embodiment, a stable turbine stator base includes: a middle ring plate 1, a lower ring plate 2, and an upper ring plate 3, each divided into two halves and symmetrically placed to form a ring; the lower ring plate 2 is placed below the middle ring plate 1 and coaxial with it; the upper ring plate 3 is placed on the upper end face of the middle ring plate 1 and coaxial with it; the middle ring plate 1, lower ring plate 2, and upper ring plate 3 are fixedly connected by bolts; each half of the middle ring plate 1, lower ring plate 2, and upper ring plate 3 has several joint blocks 5 at their jointing points; and the corresponding half of the middle ring plate 1, half of the lower ring plate 2, and half of the upper ring plate 3 have... The joint block 5 corresponds one-to-one with the joint blocks 5 on the other half of the middle ring plate 1, the other half of the lower ring plate 2, and the other half of the upper ring plate 3, and is fixedly connected by the fixing screws 6 and nuts 14 on the joint block 5. When the joint blocks are connected, the middle ring plate 1, the lower ring plate 2, and the upper ring plate 3 are welded after their shapes are complete. There are several stator foundation supports 4, which are evenly distributed around the lower ring plate 2 with the central axis of the middle ring plate 1 as the center. The end of the stator foundation support 4 near the central axis of the middle ring plate 1 is placed between the lower ring plate 2 and the middle ring plate 1, and the stator foundation support 4 is connected to the lower ring plate 2.

[0017] like Figure 2 and Figure 7 As shown, there are several vertical plates 7 on the outer side of the lower ring plate 2. Each vertical plate 7 corresponds to a stator foundation support 4. The vertical plates 7 are perpendicular to the upper end face of the lower ring plate 2 and are fixedly connected to the upper end face of the lower ring plate 2. There is a vertical plate 8 on the upper end face of the stator foundation support 4. The vertical plate 8 is fixedly connected to the upper end face of the stator foundation support 4 and is parallel to the vertical plates 7. The vertical plate 8 is placed on the outer side of the vertical plate 7 and is in contact with the vertical plate 7.

[0018] like Figure 2 and Figure 7 As shown, there are several fixing screws 10 on the stator foundation support 4. The fixing screws 10 pass through the inner side of the vertical plate 7 and are threaded to the vertical plate 8.

[0019] like Figure 7 As shown, both vertical plate 7 and vertical plate 8 have a marker 9 on their upper surfaces. The marker 9 on vertical plate 7 and the marker 9 on vertical plate 8 are on the same extended line extending outward from the center of the lower ring plate 2.

[0020] like Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the upper ring plate 3 has several fixing holes 11, which are evenly distributed on the upper ring plate 3 with the center of the upper ring plate 3 as the central axis. The lower ring plate 2 has several fixing holes 12, and the middle ring plate 1 has several fixing holes 15. When the central axes of the lower ring plate 2, the upper ring plate 3 and the middle ring plate 1 overlap, the fixing holes 11, 12 and 15 overlap one-to-one.

[0021] like Figure 4 As shown, there are several slots 13 on the outer side of the middle ring plate 1. The slots 13 are divided into several groups on an average basis. The number of groups of slots 13 corresponds one-to-one with the stator foundation support 4. One group of slots 13 is placed on the straight plane of the middle ring plate 1 and the outer side of the middle ring plate 1 with slots 13 is in contact with the stator foundation support 4.

[0022] During production, the middle ring plate 1, lower ring plate 2, and upper ring plate 3 are all manufactured in two halves. Then, the joint blocks 5 are aligned and secured with fixing screws 1 6 and nuts 14. After positioning, the middle ring plate 1, lower ring plate 2, and upper ring plate 3 are welded together. The joint blocks 5 are then cut off and ground smooth. Next, the stator foundation support 4 is wrapped around the lower ring plate 2. The vertical plate 2 8 on the stator foundation support 4 abuts against vertical plate 1 7. The stator foundation support 4 is tightly attached to the groove 13 on the middle ring plate 1, and the vertical plate 2 8 is used to secure it. The alignment 9 on plate 8 corresponds to the alignment 7 on plate 1, and the stator foundation support 4 and lower ring plate 2 are fixed with fixing screw 2 10. Then, the middle ring plate 1 covers the overlap between the stator foundation support 4 and the lower ring plate 2. Finally, bolts are passed through fixing hole 3 15 on the middle ring plate 1, fixing hole 2 12 on the lower ring plate 2, and fixing hole 1 11 on the upper ring plate 3 to fix the middle ring plate 1, lower ring plate 2, and upper ring plate 3 to form the turbine stator base, achieving a simpler structure and more convenient production and installation.

Claims

1. A stable turbine stator base, characterized in that it comprises: The middle ring plate (1) is divided into two halves and placed symmetrically to form a ring; The lower ring plate (2) is divided into two halves and placed symmetrically to form a ring. The lower ring plate (2) is placed below the middle ring plate (1) and is coaxial with the middle ring plate (1). The upper ring plate (3) is divided into two halves and placed symmetrically to form a ring. The upper ring plate (3) is placed on the upper end surface of the middle ring plate (1) and is coaxial with the middle ring plate (1). The middle ring plate (1), the lower ring plate (2) and the upper ring plate (3) are fixedly connected by bolts. Several joint blocks (5) are provided at the joints of the middle ring plate (1), the lower ring plate (2) and the upper ring plate (3). The joint blocks (5) on the corresponding half of the middle ring plate (1), the half of the lower ring plate (2) and the half of the upper ring plate (3) correspond one-to-one with the joint blocks (5) on the other half of the middle ring plate (1), the other half of the lower ring plate (2) and the other half of the upper ring plate (3) and are fixedly connected by the fixing screws (6) and nuts (14) on the joint blocks (5). When the joint blocks (5) are connected, the middle ring plate (1), the lower ring plate (2) and the upper ring plate (3) are welded after the shape is complete. There are several stator foundation supports (4) and they are evenly distributed around the lower ring plate (2) with the central axis of the middle ring plate (1) as the center. One end of the stator foundation support (4) near the central axis of the middle ring plate (1) is placed between the lower ring plate (2) and the middle ring plate (1). The stator foundation support (4) is connected to the lower ring plate (2).

2. The stable turbine stator base according to claim 1, characterized in that, The outer surface of the lower ring plate (2) is provided with several vertical plates (7), each vertical plate (7) corresponding to a stator foundation support (4). The vertical plate (7) is perpendicular to the upper surface of the lower ring plate (2) and is fixedly connected to the upper surface of the lower ring plate (2). The upper surface of the stator foundation support (4) is provided with a vertical plate (8), which is fixedly connected to the upper surface of the stator foundation support (4). The vertical plate (8) is parallel to the vertical plate (7) and is placed on the outer surface of the vertical plate (7) and in contact with the vertical plate (7).

3. A stable turbine stator base according to claim 2, characterized in that, The stator foundation support (4) is provided with several fixing screws (10). The fixing screws (10) pass through the inner side of the vertical plate (7) and are threaded to the vertical plate (8).

4. A stable turbine stator base according to claim 2, characterized in that, The upper surfaces of the first upright plate (7) and the second upright plate (8) are provided with a counterpoint (9). The counterpoint (9) on the first upright plate (7) and the counterpoint (9) on the second upright plate (8) are on the same extended line extending outward from the center of the lower ring plate (2).

5. A stable turbine stator base according to claim 1, characterized in that, The upper ring plate (3) is provided with a number of fixing holes one (11). The fixing holes one (11) are evenly distributed on the upper ring plate (3) with the center of the upper ring plate (3) as the central axis. The lower ring plate (2) is provided with a number of fixing holes two (12). The middle ring plate (1) is provided with a number of fixing holes three (15). When the central axes of the lower ring plate (2), the upper ring plate (3) and the middle ring plate (1) overlap, the fixing holes one (11), the fixing holes two (12) and the fixing holes three (15) overlap one-to-one.

6. A stable turbine stator base according to claim 1, characterized in that, The outer side of the middle ring plate (1) is provided with a number of slots (13). The slots (13) are divided into several groups on an average basis. The number of groups of slots (13) corresponds one-to-one with the stator foundation support (4). One group of slots (13) is placed on the straight plane of the middle ring plate (1) and the outer side of the middle ring plate (1) with slots (13) is in contact with the stator foundation support (4).

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