Vertical diagonal flow pump with drainage water guide plate provided with outer barrel reinforced fixing pipe structure
By using the drainage water guide plate with outer cylinder on the flow guide plate of the vertical inclined flow pump to strengthen the fixed pipe structure, the problem of easy deformation and fracture of the flow guide plate is solved, higher strength and more convenient maintenance are achieved, and operating costs are reduced.
Patent Information
- Application Number
- CN202422896965.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-11-27
AI Technical Summary
The deflectors of existing vertical inclined flow pumps are prone to deformation, breaking or twisting in large pumps, resulting in difficulty in maintenance and replacement and increasing operating costs.
The design of the fixed pipe structure with the drainage water guide plate and the outer cylinder is used to strengthen the support strength of the flow guide plate through external reinforcement fixed pipe and inner guard circular pipe, and a split structure is used for easy maintenance and replacement.
Enhances the strength and impact load capacity of the deflector, simplifies maintenance and replacement processes, reduces operating costs, and improves pump reliability.
Smart Images
Figure CN223004165U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of industrial pumps, and particularly relates to a vertical mixed-flow pump with a drainage guide water plate and an outer cylinder reinforced fixed pipe structure. Background Technique
[0002] The drainage guide water plate (commonly known as a guide vane / guide plate) of the existing vertical mixed-flow pump, especially for the guide plate of a large-sized (such as a diameter of ∅2200mm) vertical mixed-flow pump, is not an independent component, and most are of an integral guide plate structure. The integral guide plate structure is irregular (with a height greater than 4.5m), and after the streamline of the guide plate is formed, it is strengthened by fusion welding and the setting of reinforcing rib plates. In practical applications, when the unit capacity is above 600MW, for the vertical mixed-flow circulating water pump in use, the pump diameter reaches ∅2200mm (pump flow Q≥20000m3 / h, head H = 23 - 29m) or above. For the guide plate with a rib plate support structure in the prior art, cases such as deformation, fracture, or distortion of the guide plate often occur in power plants. When maintaining and replacing the guide plate component, it needs to be gas-cut and then welded and spliced, requiring reprocessing and manufacturing, which increases the operation cost. Content of the Utility Model
[0003] The utility model aims at the above problems, makes up for the deficiencies of the prior art, and provides a vertical mixed-flow pump with a drainage guide water plate and an outer cylinder reinforced fixed pipe structure; the utility model can enhance the support strength, is convenient for processing and manufacturing, and is also convenient for maintenance and replacement, with reliable operation.
[0004] To achieve the above purpose, the utility model adopts the following technical solutions.
[0005] The utility model provides a vertical mixed-flow pump with a drainage guide water plate and an outer cylinder reinforced fixed pipe structure, including an outer fixed part, an inner extractable part, and a main shaft mechanism which are arranged from outside to inside and connected in sequence. The inner extractable part is detachably connected to the outer fixed part. The inner extractable part includes an impeller chamber, a guide vane body, a lower inner protection pipe, a split drainage and guide plate, and an upper inner protection pipe which are connected in sequence from bottom to top. It is characterized in that the split drainage and guide plate includes a connecting flange, an inner protection circular pipe, a guide plate, an outer reinforced fixed pipe, and a circular cover plate. The connecting flange is connected to the lower inner protection pipe, the circular cover plate is connected to the upper inner protection pipe, the inner protection circular pipe is connected to the circular cover plate and the connecting flange, the outer reinforced fixed pipe is arranged on the upper outside of the inner protection circular pipe and connected to the circular cover plate, the guide plate is arranged between the outer reinforced fixed pipe and the inner protection pipe, the guide plate is respectively connected to the outer reinforced fixed pipe and the circular cover plate, a bearing seat is connected inside the inner protection circular pipe, and the main shaft mechanism is matched with the bearing seat.
[0006] Further, a reinforcing rib plate is disposed between the inner protective circular pipe and the connecting flange for use.
[0007] Further, a fixed support rib plate is disposed between the bearing seat and the inner protective circular pipe.
[0008] Further, the outer fixing portion includes an inhalation bellows pipe, a lower outer cylinder body, a discharge elbow pipe, an upper outer cylinder body, and a motor support seat that are connected in sequence from bottom to top, and a motor is disposed in the motor support seat.
[0009] Still further, the main shaft mechanism includes an impeller, a lower pump shaft, a rigid coupling group for shaft, and an upper pump shaft that are connected in sequence from bottom to top. The upper pump shaft is connected to the motor in the motor support seat, and the lower pump shaft is matched with the bearing seat.
[0010] Advantages of the present utility model.
[0011] By adopting a drainage guide water plate with an outer cylinder reinforced fixing pipe support structure, the present utility model enhances the strength of the guide plate and the impact load, facilitates maintenance, repair and replacement, reduces the operation cost, shortens the maintenance time, and can be widely applied to large power plants, as well as urban water supply and drainage, farmland water supply and drainage, metallurgy, mining, sewage treatment, petrochemical, offshore platforms and other fields. Description of the Drawings
[0012] In order to make the technical problems, technical solutions and advantages solved by the present utility model more clearly understood, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0013] Figure 1 is the overall sectional structure schematic diagram of the present utility model.
[0014] Figure 2 is the structural schematic diagram of the split drainage guide plate of the present utility model.
[0015] Figure 3 is the exploded structural schematic diagram of the split drainage guide plate of the present utility model.
[0016] Reference numerals in the drawings: 1 is an inhalation bellows pipe, 2 is a lower outer cylinder body, 3 is a discharge elbow pipe, 4 is an upper outer cylinder body, 5 is a motor support seat, 6 is an impeller chamber, 7 is a guide vane body, 8 is a lower inner protective pipe, 9 is a split drainage guide plate, 10 is an upper inner protective pipe, 11 is an impeller, 12 is a lower pump shaft, 13 is a rigid coupling group for shaft, 14 is an upper pump shaft, 15 is a connecting flange for use, 16 is an inner protective circular pipe, 17 is a guide plate, 18 is an outer reinforced fixing pipe, 19 is a circular cover plate, 20 is a bearing seat, 21 is a reinforcing rib plate, 22 is a fixed support rib plate. Specific Embodiment
[0017] As shown in the accompanying drawings, this embodiment provides a vertical mixed-flow pump with a drainage guide water board and an outer cylinder reinforced fixed pipe structure, which includes an outer fixed part, an inner extractable part, and a main shaft mechanism that are arranged from outside to inside and connected in sequence. The inner extractable part is detachably connected to the outer fixed part.
[0018] The outer fixed part includes a suction bell 1, a lower outer cylinder 2, a discharge elbow 3, an upper outer cylinder 4, and a motor support 5 that are connected in sequence from bottom to top. A motor is arranged inside the motor support 5.
[0019] The inner extractable part includes an impeller chamber 6, a diffuser body 7, a lower inner protection pipe 8, a split drainage and diversion board 9, and an upper inner protection pipe 10 that are connected in sequence from bottom to top.
[0020] The split drainage and diversion board 9 includes a connecting flange 15, an inner protection circular pipe 16, a diversion board 17, an outer reinforced fixed pipe 18, and a circular cover plate 19. The connecting flange 15 is connected to the lower inner protection pipe 8, the circular cover plate 19 is connected to the upper inner protection pipe 10, the inner protection circular pipe 16 is connected to the circular cover plate 19 and the connecting flange 15, the outer reinforced fixed pipe 18 is arranged on the upper outer part of the inner protection circular pipe 16 and connected to the circular cover plate 19, the diversion board 17 is arranged between the outer reinforced fixed pipe 18 and the inner protection pipe, the diversion board 17 is respectively connected to the outer reinforced fixed pipe 18 and the circular cover plate 19, a bearing seat 20 is connected inside the inner protection circular pipe 16, and the main shaft mechanism is matched with the bearing seat 20.
[0021] In order to further strengthen the strength and impact load of the diversion board 17, a reinforcing rib plate 21 is arranged between the inner protection circular pipe 16 and the connecting flange 15, and a fixed support rib plate 22 is arranged between the bearing seat 20 and the inner protection circular pipe 16.
[0022] The main shaft mechanism includes an impeller 11, a lower pump shaft 12, a shaft rigid coupling group 13, and an upper pump shaft 14 that are connected in sequence from bottom to top. The upper pump shaft 14 is connected to the motor inside the motor support 5, and the lower pump shaft 12 is matched with the bearing seat 20.
[0023] It can be understood that the above specific description of the present invention is only for explaining the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those of ordinary skill in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as it meets the usage requirements, it is within the protection scope of the present invention.
Claims
1. A vertical diagonal flow pump with a water guide plate and an outer tube reinforced fixed pipe structure, comprising an outer fixed part, an inner removable part and a main shaft mechanism arranged and connected in sequence from the outside to the inside, the inner removable part being detachably connected to the outer fixed part, the inner removable part comprising an impeller chamber (6), a guide vane body (7), a lower inner protective pipe (8), a split water guide plate (9) and an upper inner protective pipe (10) being connected in sequence from bottom to top, characterized in that: The split flow guide plate (9) comprises a connecting flange (15), an inner protective circular tube (16), a guide plate (17), an outer reinforced fixed tube (18) and a round cover plate (19); the connecting flange (15) is connected to the lower inner protective tube (8); the round cover plate (19) is connected to the upper inner protective tube (10); the inner protective circular tube (16) is connected to the round cover plate (19) and the connecting flange (15); the outer reinforced fixed tube (18) is arranged on the outside of the inner protective circular tube (16) and is connected to the round cover plate (19); the guide plate (17) is arranged between the outer reinforced fixed tube (18) and the inner protective tube; the guide plate (17) is respectively connected to the outer reinforced fixed tube (18) and the round cover plate (19); a bearing seat (20) is connected inside the inner protective circular tube (16); and the spindle mechanism cooperates with the bearing seat (20).
2. A vertical diagonal flow pump with a water guide plate and an outer tube reinforced fixed pipe structure according to claim 1, characterized in that: A reinforcing rib plate (21) is provided between the inner protective circular tube (16) and the connecting flange (15).
3. A vertical diagonal flow pump with a water guide plate and an outer tube reinforced fixed pipe structure according to claim 1, characterized in that: A fixed support rib plate (22) is provided between the bearing seat (20) and the inner protective circular tube (16).
4. A vertical diagonal flow pump with a water diversion plate and an outer tube reinforced fixed pipe structure according to claim 1, characterized in that: The external fixing part comprises an inlet bell pipe (1), a lower outer cylinder (2), an outlet elbow (3), an upper outer cylinder (4) and a motor support (5) which are connected in sequence from bottom to top, and a motor is arranged in the motor support (5).
5. A vertical diagonal flow pump with a water guide plate and an outer tube reinforced fixed pipe structure according to claim 4, characterized in that: The main shaft mechanism comprises an impeller (11), a lower pump shaft (12), a shaft rigid coupling group (13) and an upper pump shaft (14) which are connected in sequence from bottom to top; the upper pump shaft (14) is connected to the motor in the motor support (5); and the lower pump shaft (12) is matched with the bearing seat (20).